mirror of
https://github.com/RGBCube/serenity
synced 2025-07-26 22:37:36 +00:00
LibGfx: Move all image loaders and writers to a subdirectory
This commit is contained in:
Lucas CHOLLET
Andreas Kling
parent
752f06f228
commit
496b7ffb2b
73 changed files with 129 additions and 129 deletions
1588
Userland/Libraries/LibGfx/ImageFormats/BMPLoader.cpp
Normal file
1588
Userland/Libraries/LibGfx/ImageFormats/BMPLoader.cpp
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File diff suppressed because it is too large
Load diff
47
Userland/Libraries/LibGfx/ImageFormats/BMPLoader.h
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47
Userland/Libraries/LibGfx/ImageFormats/BMPLoader.h
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@ -0,0 +1,47 @@
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/*
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* Copyright (c) 2020, Matthew Olsson <mattco@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibGfx/ImageFormats/ICOLoader.h>
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#include <LibGfx/ImageFormats/ImageDecoder.h>
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namespace Gfx {
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struct BMPLoadingContext;
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class ICOImageDecoderPlugin;
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class BMPImageDecoderPlugin final : public ImageDecoderPlugin {
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public:
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static bool sniff(ReadonlyBytes);
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static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);
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static ErrorOr<NonnullOwnPtr<BMPImageDecoderPlugin>> create_as_included_in_ico(Badge<ICOImageDecoderPlugin>, ReadonlyBytes);
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enum class IncludedInICO {
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Yes,
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No,
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};
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virtual ~BMPImageDecoderPlugin() override;
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virtual IntSize size() override;
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virtual void set_volatile() override;
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[[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) override;
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virtual bool initialize() override;
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bool sniff_dib();
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virtual bool is_animated() override;
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virtual size_t loop_count() override;
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virtual size_t frame_count() override;
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virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
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virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
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private:
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BMPImageDecoderPlugin(u8 const*, size_t, IncludedInICO included_in_ico = IncludedInICO::No);
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OwnPtr<BMPLoadingContext> m_context;
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};
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}
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177
Userland/Libraries/LibGfx/ImageFormats/BMPWriter.cpp
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177
Userland/Libraries/LibGfx/ImageFormats/BMPWriter.cpp
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@ -0,0 +1,177 @@
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/*
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* Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/ImageFormats/BMPWriter.h>
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namespace Gfx {
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class OutputStreamer {
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public:
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OutputStreamer(u8* data)
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: m_data(data)
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{
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}
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void write_u8(u8 i)
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{
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*(m_data++) = i;
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}
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void write_u16(u16 i)
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{
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*(m_data++) = i & 0xFF;
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*(m_data++) = (i >> 8) & 0xFF;
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}
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void write_u32(u32 i)
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{
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write_u16(i & 0xFFFF);
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write_u16((i >> 16) & 0xFFFF);
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}
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void write_i32(i32 i)
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{
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write_u32(static_cast<u32>(i));
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}
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private:
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u8* m_data;
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};
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static ErrorOr<ByteBuffer> write_pixel_data(Bitmap const& bitmap, int pixel_row_data_size, int bytes_per_pixel, bool include_alpha_channel)
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{
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int image_size = pixel_row_data_size * bitmap.height();
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auto buffer = TRY(ByteBuffer::create_uninitialized(image_size));
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int current_row = 0;
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for (int y = bitmap.physical_height() - 1; y >= 0; --y) {
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auto* row = buffer.data() + (pixel_row_data_size * current_row++);
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for (int x = 0; x < bitmap.physical_width(); x++) {
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auto pixel = bitmap.get_pixel(x, y);
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row[x * bytes_per_pixel + 0] = pixel.blue();
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row[x * bytes_per_pixel + 1] = pixel.green();
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row[x * bytes_per_pixel + 2] = pixel.red();
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if (include_alpha_channel)
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row[x * bytes_per_pixel + 3] = pixel.alpha();
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}
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}
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return buffer;
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}
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ErrorOr<ByteBuffer> BMPWriter::encode(Bitmap const& bitmap, Options options)
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{
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return BMPWriter().dump(bitmap, options);
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}
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ByteBuffer BMPWriter::compress_pixel_data(ByteBuffer pixel_data, BMPWriter::Compression compression)
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{
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switch (compression) {
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case BMPWriter::Compression::BI_BITFIELDS:
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case BMPWriter::Compression::BI_RGB:
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return pixel_data;
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}
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VERIFY_NOT_REACHED();
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}
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ErrorOr<ByteBuffer> BMPWriter::dump(Bitmap const& bitmap, Options options)
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{
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Options::DibHeader dib_header = options.dib_header;
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auto icc_data = options.icc_data;
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if (icc_data.has_value() && dib_header < Options::DibHeader::V5)
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return Error::from_string_literal("can only embed ICC profiles in v5+ bmps");
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switch (dib_header) {
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case Options::DibHeader::Info:
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m_compression = Compression::BI_RGB;
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m_bytes_per_pixel = 3;
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m_include_alpha_channel = false;
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break;
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case Options::DibHeader::V3:
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case Options::DibHeader::V4:
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case Options::DibHeader::V5:
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m_compression = Compression::BI_BITFIELDS;
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m_bytes_per_pixel = 4;
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m_include_alpha_channel = true;
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}
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const size_t file_header_size = 14;
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size_t header_size = file_header_size + (u32)dib_header;
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int pixel_row_data_size = (m_bytes_per_pixel * 8 * bitmap.width() + 31) / 32 * 4;
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int image_size = pixel_row_data_size * bitmap.height();
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auto buffer = TRY(ByteBuffer::create_uninitialized(header_size));
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auto pixel_data = TRY(write_pixel_data(bitmap, pixel_row_data_size, m_bytes_per_pixel, m_include_alpha_channel));
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pixel_data = compress_pixel_data(move(pixel_data), m_compression);
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size_t icc_profile_size = 0;
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if (icc_data.has_value())
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icc_profile_size = icc_data->size();
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size_t pixel_data_offset = header_size + icc_profile_size;
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size_t file_size = pixel_data_offset + pixel_data.size();
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OutputStreamer streamer(buffer.data());
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streamer.write_u8('B');
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streamer.write_u8('M');
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streamer.write_u32(file_size);
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streamer.write_u32(0);
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streamer.write_u32(pixel_data_offset);
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streamer.write_u32((u32)dib_header); // Header size
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streamer.write_i32(bitmap.width()); // ImageWidth
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streamer.write_i32(bitmap.height()); // ImageHeight
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streamer.write_u16(1); // Planes
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streamer.write_u16(m_bytes_per_pixel * 8); // BitsPerPixel
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streamer.write_u32((u32)m_compression); // Compression
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streamer.write_u32(image_size); // ImageSize
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streamer.write_i32(0); // XpixelsPerMeter
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streamer.write_i32(0); // YpixelsPerMeter
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streamer.write_u32(0); // TotalColors
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streamer.write_u32(0); // ImportantColors
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if (dib_header >= Options::DibHeader::V3) {
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streamer.write_u32(0x00ff0000); // Red bitmask
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streamer.write_u32(0x0000ff00); // Green bitmask
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streamer.write_u32(0x000000ff); // Blue bitmask
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streamer.write_u32(0xff000000); // Alpha bitmask
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}
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if (dib_header >= Options::DibHeader::V4) {
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if (icc_data.has_value())
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streamer.write_u32(0x4D424544); // Colorspace EMBEDDED
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else
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streamer.write_u32(0); // Colorspace CALIBRATED_RGB
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for (int i = 0; i < 12; i++) {
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streamer.write_u32(0); // Endpoints and gamma
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}
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}
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if (dib_header >= Options::DibHeader::V5) {
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streamer.write_u32(4); // Rendering intent IMAGES / Perceptual.
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if (icc_data.has_value()) {
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streamer.write_u32((u32)dib_header); // Profile data (relative to file_header_size)
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streamer.write_u32(icc_data->size()); // Profile size
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} else {
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streamer.write_u32(0); // Profile data
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streamer.write_u32(0); // Profile size
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}
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streamer.write_u32(0); // Reserved
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}
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if (icc_data.has_value())
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TRY(buffer.try_append(icc_data.value()));
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TRY(buffer.try_append(pixel_data));
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return buffer;
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}
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}
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51
Userland/Libraries/LibGfx/ImageFormats/BMPWriter.h
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51
Userland/Libraries/LibGfx/ImageFormats/BMPWriter.h
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/*
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* Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/ByteBuffer.h>
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namespace Gfx {
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class Bitmap;
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// This is not a nested struct to work around https://llvm.org/PR36684
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struct BMPWriterOptions {
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enum class DibHeader : u32 {
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Info = 40,
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V3 = 56,
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V4 = 108,
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V5 = 124,
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};
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DibHeader dib_header = DibHeader::V5;
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Optional<ReadonlyBytes> icc_data;
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};
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class BMPWriter {
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public:
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using Options = BMPWriterOptions;
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static ErrorOr<ByteBuffer> encode(Bitmap const&, Options options = Options {});
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private:
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BMPWriter() = default;
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ErrorOr<ByteBuffer> dump(Bitmap const&, Options options);
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enum class Compression : u32 {
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BI_RGB = 0,
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BI_BITFIELDS = 3,
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};
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static ByteBuffer compress_pixel_data(ByteBuffer, Compression);
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Compression m_compression { Compression::BI_BITFIELDS };
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int m_bytes_per_pixel { 4 };
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bool m_include_alpha_channel { true };
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};
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}
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710
Userland/Libraries/LibGfx/ImageFormats/DDSLoader.cpp
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710
Userland/Libraries/LibGfx/ImageFormats/DDSLoader.cpp
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/*
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* Copyright (c) 2021, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Debug.h>
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#include <AK/DeprecatedString.h>
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#include <AK/Endian.h>
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#include <AK/Error.h>
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#include <AK/MemoryStream.h>
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#include <AK/StringBuilder.h>
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#include <AK/Try.h>
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#include <AK/Vector.h>
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#include <LibGfx/ImageFormats/DDSLoader.h>
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#include <fcntl.h>
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#include <math.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <unistd.h>
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namespace Gfx {
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struct DDSLoadingContext {
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enum State {
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NotDecoded = 0,
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Error,
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BitmapDecoded,
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};
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State state { State::NotDecoded };
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u8 const* data { nullptr };
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size_t data_size { 0 };
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DDSHeader header;
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DDSHeaderDXT10 header10;
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RefPtr<Gfx::Bitmap> bitmap;
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void dump_debug();
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};
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static constexpr u32 create_four_cc(char c0, char c1, char c2, char c3)
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{
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return c0 | c1 << 8 | c2 << 16 | c3 << 24;
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}
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static u64 get_width(DDSHeader header, size_t mipmap_level)
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{
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if (mipmap_level >= header.mip_map_count) {
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return header.width;
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}
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return header.width >> mipmap_level;
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}
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static u64 get_height(DDSHeader header, size_t mipmap_level)
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{
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if (mipmap_level >= header.mip_map_count) {
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return header.height;
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}
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return header.height >> mipmap_level;
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}
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static constexpr bool has_bitmask(DDSPixelFormat format, u32 r, u32 g, u32 b, u32 a)
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{
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return format.r_bit_mask == r && format.g_bit_mask == g && format.b_bit_mask == b && format.a_bit_mask == a;
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}
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static DXGIFormat get_format(DDSPixelFormat format)
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{
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if ((format.flags & PixelFormatFlags::DDPF_RGB) == PixelFormatFlags::DDPF_RGB) {
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switch (format.rgb_bit_count) {
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case 32: {
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if (has_bitmask(format, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000))
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return DXGI_FORMAT_R8G8B8A8_UNORM;
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if (has_bitmask(format, 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000))
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return DXGI_FORMAT_B8G8R8A8_UNORM;
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if (has_bitmask(format, 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000))
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return DXGI_FORMAT_B8G8R8X8_UNORM;
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if (has_bitmask(format, 0x3FF00000, 0x000FFC00, 0x000003FF, 0xC0000000))
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return DXGI_FORMAT_R10G10B10A2_UNORM;
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if (has_bitmask(format, 0x0000FFFF, 0xFFFF0000, 0x00000000, 0x00000000))
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return DXGI_FORMAT_R16G16_UNORM;
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if (has_bitmask(format, 0xFFFFFFFF, 0x00000000, 0x00000000, 0x00000000))
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return DXGI_FORMAT_R32_FLOAT;
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break;
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}
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case 24:
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break;
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case 16: {
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if (has_bitmask(format, 0x7C00, 0x03E0, 0x001F, 0x8000))
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return DXGI_FORMAT_B5G5R5A1_UNORM;
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if (has_bitmask(format, 0xF800, 0x07E0, 0x001F, 0x0000))
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return DXGI_FORMAT_B5G6R5_UNORM;
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if (has_bitmask(format, 0xF800, 0x07E0, 0x001F, 0x0000))
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return DXGI_FORMAT_B5G6R5_UNORM;
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if (has_bitmask(format, 0x0F00, 0x00F0, 0x000F, 0xF000))
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return DXGI_FORMAT_B4G4R4A4_UNORM;
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if (has_bitmask(format, 0x00FF, 0x0000, 0x0000, 0xFF00))
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return DXGI_FORMAT_R8G8_UNORM;
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if (has_bitmask(format, 0xFFFF, 0x0000, 0x0000, 0x0000))
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return DXGI_FORMAT_R16_UNORM;
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break;
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}
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case 8: {
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if (has_bitmask(format, 0xFF, 0x00, 0x00, 0x00))
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return DXGI_FORMAT_R8_UNORM;
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break;
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}
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}
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} else if ((format.flags & PixelFormatFlags::DDPF_LUMINANCE) == PixelFormatFlags::DDPF_LUMINANCE) {
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switch (format.rgb_bit_count) {
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case 16: {
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if (has_bitmask(format, 0xFFFF, 0x0000, 0x0000, 0x0000))
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return DXGI_FORMAT_R16_UNORM;
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if (has_bitmask(format, 0x00FF, 0x0000, 0x0000, 0xFF00))
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return DXGI_FORMAT_R8G8_UNORM;
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break;
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}
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case 8: {
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if (has_bitmask(format, 0xFF, 0x00, 0x00, 0x00))
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return DXGI_FORMAT_R8_UNORM;
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// Some writers mistakenly write this as 8 bpp.
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if (has_bitmask(format, 0x00FF, 0x0000, 0x0000, 0xFF00))
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return DXGI_FORMAT_R8G8_UNORM;
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break;
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}
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}
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} else if ((format.flags & PixelFormatFlags::DDPF_ALPHA) == PixelFormatFlags::DDPF_ALPHA) {
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if (format.rgb_bit_count == 8)
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return DXGI_FORMAT_A8_UNORM;
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} else if ((format.flags & PixelFormatFlags::DDPF_BUMPDUDV) == PixelFormatFlags::DDPF_BUMPDUDV) {
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switch (format.rgb_bit_count) {
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case 32: {
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if (has_bitmask(format, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000))
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return DXGI_FORMAT_R8G8B8A8_SNORM;
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if (has_bitmask(format, 0x0000FFFF, 0xFFFF0000, 0x00000000, 0x00000000))
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return DXGI_FORMAT_R16G16_SNORM;
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break;
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}
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case 16: {
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if (has_bitmask(format, 0x00FF, 0xFF00, 0x0000, 0x0000))
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return DXGI_FORMAT_R8G8_SNORM;
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break;
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}
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}
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} else if ((format.flags & PixelFormatFlags::DDPF_FOURCC) == PixelFormatFlags::DDPF_FOURCC) {
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if (format.four_cc == create_four_cc('D', 'X', 'T', '1'))
|
||||
return DXGI_FORMAT_BC1_UNORM;
|
||||
if (format.four_cc == create_four_cc('D', 'X', 'T', '2'))
|
||||
return DXGI_FORMAT_BC2_UNORM;
|
||||
if (format.four_cc == create_four_cc('D', 'X', 'T', '3'))
|
||||
return DXGI_FORMAT_BC2_UNORM;
|
||||
if (format.four_cc == create_four_cc('D', 'X', 'T', '4'))
|
||||
return DXGI_FORMAT_BC3_UNORM;
|
||||
if (format.four_cc == create_four_cc('D', 'X', 'T', '5'))
|
||||
return DXGI_FORMAT_BC3_UNORM;
|
||||
if (format.four_cc == create_four_cc('A', 'T', 'I', '1'))
|
||||
return DXGI_FORMAT_BC4_UNORM;
|
||||
if (format.four_cc == create_four_cc('B', 'C', '4', 'U'))
|
||||
return DXGI_FORMAT_BC4_UNORM;
|
||||
if (format.four_cc == create_four_cc('B', 'C', '4', 'S'))
|
||||
return DXGI_FORMAT_BC4_SNORM;
|
||||
if (format.four_cc == create_four_cc('A', 'T', 'I', '2'))
|
||||
return DXGI_FORMAT_BC5_UNORM;
|
||||
if (format.four_cc == create_four_cc('B', 'C', '5', 'U'))
|
||||
return DXGI_FORMAT_BC5_UNORM;
|
||||
if (format.four_cc == create_four_cc('B', 'C', '5', 'S'))
|
||||
return DXGI_FORMAT_BC5_SNORM;
|
||||
if (format.four_cc == create_four_cc('R', 'G', 'B', 'G'))
|
||||
return DXGI_FORMAT_R8G8_B8G8_UNORM;
|
||||
if (format.four_cc == create_four_cc('G', 'R', 'G', 'B'))
|
||||
return DXGI_FORMAT_G8R8_G8B8_UNORM;
|
||||
if (format.four_cc == create_four_cc('Y', 'U', 'Y', '2'))
|
||||
return DXGI_FORMAT_YUY2;
|
||||
|
||||
switch (format.four_cc) {
|
||||
case 36:
|
||||
return DXGI_FORMAT_R16G16B16A16_UNORM;
|
||||
case 110:
|
||||
return DXGI_FORMAT_R16G16B16A16_SNORM;
|
||||
case 111:
|
||||
return DXGI_FORMAT_R16_FLOAT;
|
||||
case 112:
|
||||
return DXGI_FORMAT_R16G16_FLOAT;
|
||||
case 113:
|
||||
return DXGI_FORMAT_R16G16B16A16_FLOAT;
|
||||
case 114:
|
||||
return DXGI_FORMAT_R32_FLOAT;
|
||||
case 115:
|
||||
return DXGI_FORMAT_R32G32_FLOAT;
|
||||
case 116:
|
||||
return DXGI_FORMAT_R32G32B32A32_FLOAT;
|
||||
}
|
||||
}
|
||||
|
||||
return DXGI_FORMAT_UNKNOWN;
|
||||
}
|
||||
|
||||
static ErrorOr<void> decode_dx5_alpha_block(Stream& stream, DDSLoadingContext& context, u64 bitmap_x, u64 bitmap_y)
|
||||
{
|
||||
auto color0 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto color1 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
|
||||
auto code0 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto code1 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto code2 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto code3 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto code4 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto code5 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
|
||||
u32 codes[6] = { 0 };
|
||||
codes[0] = code0 + 256 * (code1 + 256);
|
||||
codes[1] = code1 + 256 * (code2 + 256);
|
||||
codes[2] = code2 + 256 * (code3 + 256);
|
||||
codes[3] = code3 + 256 * (code4 + 256);
|
||||
codes[4] = code4 + 256 * code5;
|
||||
codes[5] = code5;
|
||||
|
||||
u32 color[8] = { 0 };
|
||||
|
||||
if (color0 > 128) {
|
||||
color[0] = color0;
|
||||
}
|
||||
|
||||
if (color1 > 128) {
|
||||
color[1] = color1;
|
||||
}
|
||||
|
||||
if (color0 > color1) {
|
||||
color[2] = (6 * color[0] + 1 * color[1]) / 7;
|
||||
color[3] = (5 * color[0] + 2 * color[1]) / 7;
|
||||
color[4] = (4 * color[0] + 3 * color[1]) / 7;
|
||||
color[5] = (3 * color[0] + 4 * color[1]) / 7;
|
||||
color[6] = (2 * color[0] + 5 * color[1]) / 7;
|
||||
color[7] = (1 * color[0] + 6 * color[1]) / 7;
|
||||
} else {
|
||||
color[2] = (4 * color[0] + 1 * color[1]) / 5;
|
||||
color[3] = (3 * color[0] + 2 * color[1]) / 5;
|
||||
color[4] = (2 * color[0] + 3 * color[1]) / 5;
|
||||
color[5] = (1 * color[0] + 4 * color[1]) / 5;
|
||||
color[6] = 0;
|
||||
color[7] = 255;
|
||||
}
|
||||
|
||||
for (size_t y = 0; y < 4; y++) {
|
||||
for (size_t x = 0; x < 4; x++) {
|
||||
u8 index = 3 * (4 * y + x);
|
||||
u8 bit_location = floor(index / 8.0);
|
||||
u8 adjusted_index = index - (bit_location * 8);
|
||||
|
||||
u8 code = (codes[bit_location] >> adjusted_index) & 7;
|
||||
u8 alpha = color[code];
|
||||
|
||||
Color color = Color(0, 0, 0, alpha);
|
||||
context.bitmap->set_pixel(bitmap_x + x, bitmap_y + y, color);
|
||||
}
|
||||
}
|
||||
|
||||
return {};
|
||||
}
|
||||
|
||||
static ErrorOr<void> decode_dx3_alpha_block(Stream& stream, DDSLoadingContext& context, u64 bitmap_x, u64 bitmap_y)
|
||||
{
|
||||
auto a0 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto a1 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto a2 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto a3 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto a4 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto a5 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto a6 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto a7 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
|
||||
u64 alpha_0 = a0 + 256u * (a1 + 256u * (a2 + 256u * (a3 + 256u)));
|
||||
u64 alpha_1 = a4 + 256u * (a5 + 256u * (a6 + 256u * a7));
|
||||
|
||||
for (size_t y = 0; y < 4; y++) {
|
||||
for (size_t x = 0; x < 4; x++) {
|
||||
u8 code = 4 * (4 * y + x);
|
||||
|
||||
if (code >= 32) {
|
||||
code = code - 32;
|
||||
u8 alpha = ((alpha_1 >> code) & 0x0F) * 17;
|
||||
|
||||
Color color = Color(0, 0, 0, alpha);
|
||||
context.bitmap->set_pixel(bitmap_x + x, bitmap_y + y, color);
|
||||
} else {
|
||||
u8 alpha = ((alpha_0 >> code) & 0x0F) * 17;
|
||||
|
||||
Color color = Color(0, 0, 0, alpha);
|
||||
context.bitmap->set_pixel(bitmap_x + x, bitmap_y + y, color);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return {};
|
||||
}
|
||||
|
||||
static void unpack_rbg_565(u32 rgb, u8* output)
|
||||
{
|
||||
u8 r = (rgb >> 11) & 0x1F;
|
||||
u8 g = (rgb >> 5) & 0x3F;
|
||||
u8 b = rgb & 0x1F;
|
||||
|
||||
output[0] = (r << 3) | (r >> 2);
|
||||
output[1] = (g << 2) | (g >> 4);
|
||||
output[2] = (b << 3) | (b >> 2);
|
||||
output[3] = 255;
|
||||
}
|
||||
|
||||
static ErrorOr<void> decode_color_block(Stream& stream, DDSLoadingContext& context, bool dxt1, u64 bitmap_x, u64 bitmap_y)
|
||||
{
|
||||
auto c0_low = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto c0_high = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto c1_low = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto c1_high = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
|
||||
auto codes_0 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto codes_1 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto codes_2 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
auto codes_3 = TRY(stream.read_value<LittleEndian<u8>>());
|
||||
|
||||
u64 code = codes_0 + 256 * (codes_1 + 256 * (codes_2 + 256 * codes_3));
|
||||
u32 color_0 = c0_low + (c0_high * 256);
|
||||
u32 color_1 = c1_low + (c1_high * 256);
|
||||
|
||||
u8 rgba[4][4];
|
||||
unpack_rbg_565(color_0, rgba[0]);
|
||||
unpack_rbg_565(color_1, rgba[1]);
|
||||
|
||||
if (color_0 > color_1) {
|
||||
for (size_t i = 0; i < 3; i++) {
|
||||
rgba[2][i] = (2 * rgba[0][i] + rgba[1][i]) / 3;
|
||||
rgba[3][i] = (rgba[0][i] + 2 * rgba[1][i]) / 3;
|
||||
}
|
||||
|
||||
rgba[2][3] = 255;
|
||||
rgba[3][3] = 255;
|
||||
} else {
|
||||
for (size_t i = 0; i < 3; i++) {
|
||||
rgba[2][i] = (rgba[0][i] + rgba[1][i]) / 2;
|
||||
rgba[3][i] = 0;
|
||||
}
|
||||
|
||||
rgba[2][3] = 255;
|
||||
rgba[3][3] = dxt1 ? 0 : 255;
|
||||
}
|
||||
|
||||
size_t i = 0;
|
||||
for (size_t y = 0; y < 4; y++) {
|
||||
for (size_t x = 0; x < 4; x++) {
|
||||
u8 code_byte = (code >> (i * 2)) & 3;
|
||||
u8 r = rgba[code_byte][0];
|
||||
u8 g = rgba[code_byte][1];
|
||||
u8 b = rgba[code_byte][2];
|
||||
u8 a = dxt1 ? rgba[code_byte][3] : context.bitmap->get_pixel(bitmap_x + x, bitmap_y + y).alpha();
|
||||
|
||||
Color color = Color(r, g, b, a);
|
||||
context.bitmap->set_pixel(bitmap_x + x, bitmap_y + y, color);
|
||||
i++;
|
||||
}
|
||||
}
|
||||
|
||||
return {};
|
||||
}
|
||||
|
||||
static ErrorOr<void> decode_dxt(Stream& stream, DDSLoadingContext& context, DXGIFormat format, u64 width, u64 y)
|
||||
{
|
||||
if (format == DXGI_FORMAT_BC1_UNORM) {
|
||||
for (size_t x = 0; x < width; x += 4) {
|
||||
TRY(decode_color_block(stream, context, true, x, y));
|
||||
}
|
||||
}
|
||||
|
||||
if (format == DXGI_FORMAT_BC2_UNORM) {
|
||||
for (size_t x = 0; x < width; x += 4) {
|
||||
TRY(decode_dx3_alpha_block(stream, context, x, y));
|
||||
TRY(decode_color_block(stream, context, false, x, y));
|
||||
}
|
||||
}
|
||||
|
||||
if (format == DXGI_FORMAT_BC3_UNORM) {
|
||||
for (size_t x = 0; x < width; x += 4) {
|
||||
TRY(decode_dx5_alpha_block(stream, context, x, y));
|
||||
TRY(decode_color_block(stream, context, false, x, y));
|
||||
}
|
||||
}
|
||||
|
||||
return {};
|
||||
}
|
||||
static ErrorOr<void> decode_bitmap(Stream& stream, DDSLoadingContext& context, DXGIFormat format, u64 width, u64 height)
|
||||
{
|
||||
Vector<u32> dxt_formats = { DXGI_FORMAT_BC1_UNORM, DXGI_FORMAT_BC2_UNORM, DXGI_FORMAT_BC3_UNORM };
|
||||
if (dxt_formats.contains_slow(format)) {
|
||||
for (u64 y = 0; y < height; y += 4) {
|
||||
TRY(decode_dxt(stream, context, format, width, y));
|
||||
}
|
||||
}
|
||||
|
||||
// FIXME: Support more encodings (ATI, YUV, RAW, etc...).
|
||||
return {};
|
||||
}
|
||||
|
||||
static ErrorOr<void> decode_dds(DDSLoadingContext& context)
|
||||
{
|
||||
// All valid DDS files are at least 128 bytes long.
|
||||
if (context.data_size < 128) {
|
||||
dbgln_if(DDS_DEBUG, "File is too short for DDS");
|
||||
context.state = DDSLoadingContext::State::Error;
|
||||
return Error::from_string_literal("File is too short for DDS");
|
||||
}
|
||||
|
||||
FixedMemoryStream stream { ReadonlyBytes { context.data, context.data_size } };
|
||||
|
||||
auto magic = TRY(stream.read_value<u32>());
|
||||
|
||||
if (magic != create_four_cc('D', 'D', 'S', ' ')) {
|
||||
dbgln_if(DDS_DEBUG, "Missing magic number");
|
||||
context.state = DDSLoadingContext::State::Error;
|
||||
return Error::from_string_literal("Missing magic number");
|
||||
}
|
||||
|
||||
context.header = TRY(stream.read_value<DDSHeader>());
|
||||
|
||||
if (context.header.size != 124) {
|
||||
dbgln_if(DDS_DEBUG, "Header size is malformed");
|
||||
context.state = DDSLoadingContext::State::Error;
|
||||
return Error::from_string_literal("Header size is malformed");
|
||||
}
|
||||
if (context.header.pixel_format.size != 32) {
|
||||
dbgln_if(DDS_DEBUG, "Pixel format size is malformed");
|
||||
context.state = DDSLoadingContext::State::Error;
|
||||
return Error::from_string_literal("Pixel format size is malformed");
|
||||
}
|
||||
|
||||
if ((context.header.pixel_format.flags & PixelFormatFlags::DDPF_FOURCC) == PixelFormatFlags::DDPF_FOURCC) {
|
||||
if (context.header.pixel_format.four_cc == create_four_cc('D', 'X', '1', '0')) {
|
||||
if (context.data_size < 148) {
|
||||
dbgln_if(DDS_DEBUG, "DX10 header is too short");
|
||||
context.state = DDSLoadingContext::State::Error;
|
||||
return Error::from_string_literal("DX10 header is too short");
|
||||
}
|
||||
|
||||
context.header10 = TRY(stream.read_value<DDSHeaderDXT10>());
|
||||
}
|
||||
}
|
||||
|
||||
if constexpr (DDS_DEBUG) {
|
||||
context.dump_debug();
|
||||
}
|
||||
|
||||
DXGIFormat format = get_format(context.header.pixel_format);
|
||||
|
||||
Vector<u32> supported_formats = { DXGI_FORMAT_BC1_UNORM, DXGI_FORMAT_BC2_UNORM, DXGI_FORMAT_BC3_UNORM };
|
||||
if (!supported_formats.contains_slow(format)) {
|
||||
dbgln_if(DDS_DEBUG, "Format of type {} is not supported at the moment", static_cast<u32>(format));
|
||||
context.state = DDSLoadingContext::State::Error;
|
||||
return Error::from_string_literal("Format type is not supported at the moment");
|
||||
}
|
||||
|
||||
// We support parsing mipmaps, but we only care about the largest one :^) (At least for now)
|
||||
if (size_t mipmap_level = 0; mipmap_level < max(context.header.mip_map_count, 1u)) {
|
||||
u64 width = get_width(context.header, mipmap_level);
|
||||
u64 height = get_height(context.header, mipmap_level);
|
||||
|
||||
context.bitmap = TRY(Bitmap::create(BitmapFormat::BGRA8888, { width, height }));
|
||||
|
||||
TRY(decode_bitmap(stream, context, format, width, height));
|
||||
}
|
||||
|
||||
context.state = DDSLoadingContext::State::BitmapDecoded;
|
||||
|
||||
return {};
|
||||
}
|
||||
|
||||
void DDSLoadingContext::dump_debug()
|
||||
{
|
||||
StringBuilder builder;
|
||||
|
||||
builder.append("\nDDS:\n"sv);
|
||||
builder.appendff("\tHeader Size: {}\n", header.size);
|
||||
|
||||
builder.append("\tFlags:"sv);
|
||||
if ((header.flags & DDSFlags::DDSD_CAPS) == DDSFlags::DDSD_CAPS)
|
||||
builder.append(" DDSD_CAPS"sv);
|
||||
if ((header.flags & DDSFlags::DDSD_HEIGHT) == DDSFlags::DDSD_HEIGHT)
|
||||
builder.append(" DDSD_HEIGHT"sv);
|
||||
if ((header.flags & DDSFlags::DDSD_WIDTH) == DDSFlags::DDSD_WIDTH)
|
||||
builder.append(" DDSD_WIDTH"sv);
|
||||
if ((header.flags & DDSFlags::DDSD_PITCH) == DDSFlags::DDSD_PITCH)
|
||||
builder.append(" DDSD_PITCH"sv);
|
||||
if ((header.flags & DDSFlags::DDSD_PIXELFORMAT) == DDSFlags::DDSD_PIXELFORMAT)
|
||||
builder.append(" DDSD_PIXELFORMAT"sv);
|
||||
if ((header.flags & DDSFlags::DDSD_MIPMAPCOUNT) == DDSFlags::DDSD_MIPMAPCOUNT)
|
||||
builder.append(" DDSD_MIPMAPCOUNT"sv);
|
||||
if ((header.flags & DDSFlags::DDSD_LINEARSIZE) == DDSFlags::DDSD_LINEARSIZE)
|
||||
builder.append(" DDSD_LINEARSIZE"sv);
|
||||
if ((header.flags & DDSFlags::DDSD_DEPTH) == DDSFlags::DDSD_DEPTH)
|
||||
builder.append(" DDSD_DEPTH"sv);
|
||||
builder.append("\n"sv);
|
||||
|
||||
builder.appendff("\tHeight: {}\n", header.height);
|
||||
builder.appendff("\tWidth: {}\n", header.width);
|
||||
builder.appendff("\tPitch: {}\n", header.pitch);
|
||||
builder.appendff("\tDepth: {}\n", header.depth);
|
||||
builder.appendff("\tMipmap Count: {}\n", header.mip_map_count);
|
||||
|
||||
builder.append("\tCaps:"sv);
|
||||
if ((header.caps1 & Caps1Flags::DDSCAPS_COMPLEX) == Caps1Flags::DDSCAPS_COMPLEX)
|
||||
builder.append(" DDSCAPS_COMPLEX"sv);
|
||||
if ((header.caps1 & Caps1Flags::DDSCAPS_MIPMAP) == Caps1Flags::DDSCAPS_MIPMAP)
|
||||
builder.append(" DDSCAPS_MIPMAP"sv);
|
||||
if ((header.caps1 & Caps1Flags::DDSCAPS_TEXTURE) == Caps1Flags::DDSCAPS_TEXTURE)
|
||||
builder.append(" DDSCAPS_TEXTURE"sv);
|
||||
builder.append("\n"sv);
|
||||
|
||||
builder.append("\tCaps2:"sv);
|
||||
if ((header.caps2 & Caps2Flags::DDSCAPS2_CUBEMAP) == Caps2Flags::DDSCAPS2_CUBEMAP)
|
||||
builder.append(" DDSCAPS2_CUBEMAP"sv);
|
||||
if ((header.caps2 & Caps2Flags::DDSCAPS2_CUBEMAP_POSITIVEX) == Caps2Flags::DDSCAPS2_CUBEMAP_POSITIVEX)
|
||||
builder.append(" DDSCAPS2_CUBEMAP_POSITIVEX"sv);
|
||||
if ((header.caps2 & Caps2Flags::DDSCAPS2_CUBEMAP_NEGATIVEX) == Caps2Flags::DDSCAPS2_CUBEMAP_NEGATIVEX)
|
||||
builder.append(" DDSCAPS2_CUBEMAP_NEGATIVEX"sv);
|
||||
if ((header.caps2 & Caps2Flags::DDSCAPS2_CUBEMAP_POSITIVEY) == Caps2Flags::DDSCAPS2_CUBEMAP_POSITIVEY)
|
||||
builder.append(" DDSCAPS2_CUBEMAP_POSITIVEY"sv);
|
||||
if ((header.caps2 & Caps2Flags::DDSCAPS2_CUBEMAP_NEGATIVEY) == Caps2Flags::DDSCAPS2_CUBEMAP_NEGATIVEY)
|
||||
builder.append(" DDSCAPS2_CUBEMAP_NEGATIVEY"sv);
|
||||
if ((header.caps2 & Caps2Flags::DDSCAPS2_CUBEMAP_POSITIVEZ) == Caps2Flags::DDSCAPS2_CUBEMAP_POSITIVEZ)
|
||||
builder.append(" DDSCAPS2_CUBEMAP_POSITIVEZ"sv);
|
||||
if ((header.caps2 & Caps2Flags::DDSCAPS2_CUBEMAP_NEGATIVEZ) == Caps2Flags::DDSCAPS2_CUBEMAP_NEGATIVEZ)
|
||||
builder.append(" DDSCAPS2_CUBEMAP_NEGATIVEZ"sv);
|
||||
if ((header.caps2 & Caps2Flags::DDSCAPS2_VOLUME) == Caps2Flags::DDSCAPS2_VOLUME)
|
||||
builder.append(" DDSCAPS2_VOLUME"sv);
|
||||
builder.append("\n"sv);
|
||||
|
||||
builder.append("Pixel Format:\n"sv);
|
||||
builder.appendff("\tStruct Size: {}\n", header.pixel_format.size);
|
||||
|
||||
builder.append("\tFlags:"sv);
|
||||
if ((header.pixel_format.flags & PixelFormatFlags::DDPF_ALPHAPIXELS) == PixelFormatFlags::DDPF_ALPHAPIXELS)
|
||||
builder.append(" DDPF_ALPHAPIXELS"sv);
|
||||
if ((header.pixel_format.flags & PixelFormatFlags::DDPF_ALPHA) == PixelFormatFlags::DDPF_ALPHA)
|
||||
builder.append(" DDPF_ALPHA"sv);
|
||||
if ((header.pixel_format.flags & PixelFormatFlags::DDPF_FOURCC) == PixelFormatFlags::DDPF_FOURCC)
|
||||
builder.append(" DDPF_FOURCC"sv);
|
||||
if ((header.pixel_format.flags & PixelFormatFlags::DDPF_PALETTEINDEXED8) == PixelFormatFlags::DDPF_PALETTEINDEXED8)
|
||||
builder.append(" DDPF_PALETTEINDEXED8"sv);
|
||||
if ((header.pixel_format.flags & PixelFormatFlags::DDPF_RGB) == PixelFormatFlags::DDPF_RGB)
|
||||
builder.append(" DDPF_RGB"sv);
|
||||
if ((header.pixel_format.flags & PixelFormatFlags::DDPF_YUV) == PixelFormatFlags::DDPF_YUV)
|
||||
builder.append(" DDPF_YUV"sv);
|
||||
if ((header.pixel_format.flags & PixelFormatFlags::DDPF_LUMINANCE) == PixelFormatFlags::DDPF_LUMINANCE)
|
||||
builder.append(" DDPF_LUMINANCE"sv);
|
||||
if ((header.pixel_format.flags & PixelFormatFlags::DDPF_BUMPDUDV) == PixelFormatFlags::DDPF_BUMPDUDV)
|
||||
builder.append(" DDPF_BUMPDUDV"sv);
|
||||
if ((header.pixel_format.flags & PixelFormatFlags::DDPF_NORMAL) == PixelFormatFlags::DDPF_NORMAL)
|
||||
builder.append(" DDPF_NORMAL"sv);
|
||||
builder.append("\n"sv);
|
||||
|
||||
builder.append("\tFour CC: "sv);
|
||||
builder.appendff("{:c}", (header.pixel_format.four_cc >> (8 * 0)) & 0xFF);
|
||||
builder.appendff("{:c}", (header.pixel_format.four_cc >> (8 * 1)) & 0xFF);
|
||||
builder.appendff("{:c}", (header.pixel_format.four_cc >> (8 * 2)) & 0xFF);
|
||||
builder.appendff("{:c}", (header.pixel_format.four_cc >> (8 * 3)) & 0xFF);
|
||||
builder.append("\n"sv);
|
||||
builder.appendff("\tRGB Bit Count: {}\n", header.pixel_format.rgb_bit_count);
|
||||
builder.appendff("\tR Bit Mask: {}\n", header.pixel_format.r_bit_mask);
|
||||
builder.appendff("\tG Bit Mask: {}\n", header.pixel_format.g_bit_mask);
|
||||
builder.appendff("\tB Bit Mask: {}\n", header.pixel_format.b_bit_mask);
|
||||
builder.appendff("\tA Bit Mask: {}\n", header.pixel_format.a_bit_mask);
|
||||
|
||||
builder.append("DDS10:\n"sv);
|
||||
builder.appendff("\tFormat: {}\n", static_cast<u32>(header10.format));
|
||||
|
||||
builder.append("\tResource Dimension:"sv);
|
||||
if ((header10.resource_dimension & ResourceDimensions::DDS_DIMENSION_UNKNOWN) == ResourceDimensions::DDS_DIMENSION_UNKNOWN)
|
||||
builder.append(" DDS_DIMENSION_UNKNOWN"sv);
|
||||
if ((header10.resource_dimension & ResourceDimensions::DDS_DIMENSION_BUFFER) == ResourceDimensions::DDS_DIMENSION_BUFFER)
|
||||
builder.append(" DDS_DIMENSION_BUFFER"sv);
|
||||
if ((header10.resource_dimension & ResourceDimensions::DDS_DIMENSION_TEXTURE1D) == ResourceDimensions::DDS_DIMENSION_TEXTURE1D)
|
||||
builder.append(" DDS_DIMENSION_TEXTURE1D"sv);
|
||||
if ((header10.resource_dimension & ResourceDimensions::DDS_DIMENSION_TEXTURE2D) == ResourceDimensions::DDS_DIMENSION_TEXTURE2D)
|
||||
builder.append(" DDS_DIMENSION_TEXTURE2D"sv);
|
||||
if ((header10.resource_dimension & ResourceDimensions::DDS_DIMENSION_TEXTURE3D) == ResourceDimensions::DDS_DIMENSION_TEXTURE3D)
|
||||
builder.append(" DDS_DIMENSION_TEXTURE3D"sv);
|
||||
builder.append("\n"sv);
|
||||
|
||||
builder.appendff("\tArray Size: {}\n", header10.array_size);
|
||||
|
||||
builder.append("\tMisc Flags:"sv);
|
||||
if ((header10.misc_flag & MiscFlags::DDS_RESOURCE_MISC_TEXTURECUBE) == MiscFlags::DDS_RESOURCE_MISC_TEXTURECUBE)
|
||||
builder.append(" DDS_RESOURCE_MISC_TEXTURECUBE"sv);
|
||||
builder.append("\n"sv);
|
||||
|
||||
builder.append("\tMisc Flags 2:"sv);
|
||||
if ((header10.misc_flag2 & Misc2Flags::DDS_ALPHA_MODE_UNKNOWN) == Misc2Flags::DDS_ALPHA_MODE_UNKNOWN)
|
||||
builder.append(" DDS_ALPHA_MODE_UNKNOWN"sv);
|
||||
if ((header10.misc_flag2 & Misc2Flags::DDS_ALPHA_MODE_STRAIGHT) == Misc2Flags::DDS_ALPHA_MODE_STRAIGHT)
|
||||
builder.append(" DDS_ALPHA_MODE_STRAIGHT"sv);
|
||||
if ((header10.misc_flag2 & Misc2Flags::DDS_ALPHA_MODE_PREMULTIPLIED) == Misc2Flags::DDS_ALPHA_MODE_PREMULTIPLIED)
|
||||
builder.append(" DDS_ALPHA_MODE_PREMULTIPLIED"sv);
|
||||
if ((header10.misc_flag2 & Misc2Flags::DDS_ALPHA_MODE_OPAQUE) == Misc2Flags::DDS_ALPHA_MODE_OPAQUE)
|
||||
builder.append(" DDS_ALPHA_MODE_OPAQUE"sv);
|
||||
if ((header10.misc_flag2 & Misc2Flags::DDS_ALPHA_MODE_CUSTOM) == Misc2Flags::DDS_ALPHA_MODE_CUSTOM)
|
||||
builder.append(" DDS_ALPHA_MODE_CUSTOM"sv);
|
||||
builder.append("\n"sv);
|
||||
|
||||
dbgln("{}", builder.to_deprecated_string());
|
||||
}
|
||||
|
||||
DDSImageDecoderPlugin::DDSImageDecoderPlugin(u8 const* data, size_t size)
|
||||
{
|
||||
m_context = make<DDSLoadingContext>();
|
||||
m_context->data = data;
|
||||
m_context->data_size = size;
|
||||
}
|
||||
|
||||
DDSImageDecoderPlugin::~DDSImageDecoderPlugin() = default;
|
||||
|
||||
IntSize DDSImageDecoderPlugin::size()
|
||||
{
|
||||
if (m_context->state == DDSLoadingContext::State::Error)
|
||||
return {};
|
||||
|
||||
if (m_context->state == DDSLoadingContext::State::BitmapDecoded)
|
||||
return { m_context->header.width, m_context->header.height };
|
||||
|
||||
return {};
|
||||
}
|
||||
|
||||
void DDSImageDecoderPlugin::set_volatile()
|
||||
{
|
||||
if (m_context->bitmap)
|
||||
m_context->bitmap->set_volatile();
|
||||
}
|
||||
|
||||
bool DDSImageDecoderPlugin::set_nonvolatile(bool& was_purged)
|
||||
{
|
||||
if (!m_context->bitmap)
|
||||
return false;
|
||||
return m_context->bitmap->set_nonvolatile(was_purged);
|
||||
}
|
||||
|
||||
bool DDSImageDecoderPlugin::initialize()
|
||||
{
|
||||
// The header is always at least 128 bytes, so if the file is smaller, it can't be a DDS.
|
||||
return m_context->data_size > 128
|
||||
&& m_context->data[0] == 0x44
|
||||
&& m_context->data[1] == 0x44
|
||||
&& m_context->data[2] == 0x53
|
||||
&& m_context->data[3] == 0x20;
|
||||
}
|
||||
|
||||
bool DDSImageDecoderPlugin::sniff(ReadonlyBytes data)
|
||||
{
|
||||
// The header is always at least 128 bytes, so if the file is smaller, it can't be a DDS.
|
||||
return data.size() > 128
|
||||
&& data.data()[0] == 0x44
|
||||
&& data.data()[1] == 0x44
|
||||
&& data.data()[2] == 0x53
|
||||
&& data.data()[3] == 0x20;
|
||||
}
|
||||
|
||||
ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> DDSImageDecoderPlugin::create(ReadonlyBytes data)
|
||||
{
|
||||
return adopt_nonnull_own_or_enomem(new (nothrow) DDSImageDecoderPlugin(data.data(), data.size()));
|
||||
}
|
||||
|
||||
bool DDSImageDecoderPlugin::is_animated()
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
size_t DDSImageDecoderPlugin::loop_count()
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
size_t DDSImageDecoderPlugin::frame_count()
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
ErrorOr<ImageFrameDescriptor> DDSImageDecoderPlugin::frame(size_t index)
|
||||
{
|
||||
if (index > 0)
|
||||
return Error::from_string_literal("DDSImageDecoderPlugin: Invalid frame index");
|
||||
|
||||
if (m_context->state == DDSLoadingContext::State::Error)
|
||||
return Error::from_string_literal("DDSImageDecoderPlugin: Decoding failed");
|
||||
|
||||
if (m_context->state < DDSLoadingContext::State::BitmapDecoded) {
|
||||
TRY(decode_dds(*m_context));
|
||||
}
|
||||
|
||||
VERIFY(m_context->bitmap);
|
||||
return ImageFrameDescriptor { m_context->bitmap, 0 };
|
||||
}
|
||||
|
||||
ErrorOr<Optional<ReadonlyBytes>> DDSImageDecoderPlugin::icc_data()
|
||||
{
|
||||
return OptionalNone {};
|
||||
}
|
||||
|
||||
}
|
||||
269
Userland/Libraries/LibGfx/ImageFormats/DDSLoader.h
Normal file
269
Userland/Libraries/LibGfx/ImageFormats/DDSLoader.h
Normal file
|
|
@ -0,0 +1,269 @@
|
|||
/*
|
||||
* Copyright (c) 2021, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
enum MiscFlags : u32 {
|
||||
DDS_RESOURCE_MISC_TEXTURECUBE = 0x4,
|
||||
};
|
||||
|
||||
enum Misc2Flags : u32 {
|
||||
DDS_ALPHA_MODE_UNKNOWN = 0x0,
|
||||
DDS_ALPHA_MODE_STRAIGHT = 0x1,
|
||||
DDS_ALPHA_MODE_PREMULTIPLIED = 0x2,
|
||||
DDS_ALPHA_MODE_OPAQUE = 0x3,
|
||||
DDS_ALPHA_MODE_CUSTOM = 0x4,
|
||||
};
|
||||
|
||||
enum Caps1Flags : u32 {
|
||||
DDSCAPS_COMPLEX = 0x8,
|
||||
DDSCAPS_TEXTURE = 0x1000,
|
||||
DDSCAPS_MIPMAP = 0x400000,
|
||||
};
|
||||
|
||||
enum Caps2Flags : u32 {
|
||||
DDSCAPS2_CUBEMAP = 0x200,
|
||||
DDSCAPS2_CUBEMAP_POSITIVEX = 0x400,
|
||||
DDSCAPS2_CUBEMAP_NEGATIVEX = 0x800,
|
||||
DDSCAPS2_CUBEMAP_POSITIVEY = 0x1000,
|
||||
DDSCAPS2_CUBEMAP_NEGATIVEY = 0x2000,
|
||||
DDSCAPS2_CUBEMAP_POSITIVEZ = 0x4000,
|
||||
DDSCAPS2_CUBEMAP_NEGATIVEZ = 0x8000,
|
||||
DDSCAPS2_VOLUME = 0x200000,
|
||||
};
|
||||
|
||||
enum ResourceDimensions : u32 {
|
||||
DDS_DIMENSION_UNKNOWN,
|
||||
DDS_DIMENSION_BUFFER,
|
||||
DDS_DIMENSION_TEXTURE1D = 2,
|
||||
DDS_DIMENSION_TEXTURE2D = 3,
|
||||
DDS_DIMENSION_TEXTURE3D = 4,
|
||||
};
|
||||
|
||||
enum DXGIFormat : u32 {
|
||||
DXGI_FORMAT_UNKNOWN = 0,
|
||||
DXGI_FORMAT_R32G32B32A32_TYPELESS,
|
||||
DXGI_FORMAT_R32G32B32A32_FLOAT,
|
||||
DXGI_FORMAT_R32G32B32A32_UINT,
|
||||
DXGI_FORMAT_R32G32B32A32_SINT,
|
||||
DXGI_FORMAT_R32G32B32_TYPELESS,
|
||||
DXGI_FORMAT_R32G32B32_FLOAT,
|
||||
DXGI_FORMAT_R32G32B32_UINT,
|
||||
DXGI_FORMAT_R32G32B32_SINT,
|
||||
DXGI_FORMAT_R16G16B16A16_TYPELESS,
|
||||
DXGI_FORMAT_R16G16B16A16_FLOAT,
|
||||
DXGI_FORMAT_R16G16B16A16_UNORM,
|
||||
DXGI_FORMAT_R16G16B16A16_UINT,
|
||||
DXGI_FORMAT_R16G16B16A16_SNORM,
|
||||
DXGI_FORMAT_R16G16B16A16_SINT,
|
||||
DXGI_FORMAT_R32G32_TYPELESS,
|
||||
DXGI_FORMAT_R32G32_FLOAT,
|
||||
DXGI_FORMAT_R32G32_UINT,
|
||||
DXGI_FORMAT_R32G32_SINT,
|
||||
DXGI_FORMAT_R32G8X24_TYPELESS,
|
||||
DXGI_FORMAT_D32_FLOAT_S8X24_UINT,
|
||||
DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS,
|
||||
DXGI_FORMAT_X32_TYPELESS_G8X24_UINT,
|
||||
DXGI_FORMAT_R10G10B10A2_TYPELESS,
|
||||
DXGI_FORMAT_R10G10B10A2_UNORM,
|
||||
DXGI_FORMAT_R10G10B10A2_UINT,
|
||||
DXGI_FORMAT_R11G11B10_FLOAT,
|
||||
DXGI_FORMAT_R8G8B8A8_TYPELESS,
|
||||
DXGI_FORMAT_R8G8B8A8_UNORM,
|
||||
DXGI_FORMAT_R8G8B8A8_UNORM_SRGB,
|
||||
DXGI_FORMAT_R8G8B8A8_UINT,
|
||||
DXGI_FORMAT_R8G8B8A8_SNORM,
|
||||
DXGI_FORMAT_R8G8B8A8_SINT,
|
||||
DXGI_FORMAT_R16G16_TYPELESS,
|
||||
DXGI_FORMAT_R16G16_FLOAT,
|
||||
DXGI_FORMAT_R16G16_UNORM,
|
||||
DXGI_FORMAT_R16G16_UINT,
|
||||
DXGI_FORMAT_R16G16_SNORM,
|
||||
DXGI_FORMAT_R16G16_SINT,
|
||||
DXGI_FORMAT_R32_TYPELESS,
|
||||
DXGI_FORMAT_D32_FLOAT,
|
||||
DXGI_FORMAT_R32_FLOAT,
|
||||
DXGI_FORMAT_R32_UINT,
|
||||
DXGI_FORMAT_R32_SINT,
|
||||
DXGI_FORMAT_R24G8_TYPELESS,
|
||||
DXGI_FORMAT_D24_UNORM_S8_UINT,
|
||||
DXGI_FORMAT_R24_UNORM_X8_TYPELESS,
|
||||
DXGI_FORMAT_X24_TYPELESS_G8_UINT,
|
||||
DXGI_FORMAT_R8G8_TYPELESS,
|
||||
DXGI_FORMAT_R8G8_UNORM,
|
||||
DXGI_FORMAT_R8G8_UINT,
|
||||
DXGI_FORMAT_R8G8_SNORM,
|
||||
DXGI_FORMAT_R8G8_SINT,
|
||||
DXGI_FORMAT_R16_TYPELESS,
|
||||
DXGI_FORMAT_R16_FLOAT,
|
||||
DXGI_FORMAT_D16_UNORM,
|
||||
DXGI_FORMAT_R16_UNORM,
|
||||
DXGI_FORMAT_R16_UINT,
|
||||
DXGI_FORMAT_R16_SNORM,
|
||||
DXGI_FORMAT_R16_SINT,
|
||||
DXGI_FORMAT_R8_TYPELESS,
|
||||
DXGI_FORMAT_R8_UNORM,
|
||||
DXGI_FORMAT_R8_UINT,
|
||||
DXGI_FORMAT_R8_SNORM,
|
||||
DXGI_FORMAT_R8_SINT,
|
||||
DXGI_FORMAT_A8_UNORM,
|
||||
DXGI_FORMAT_R1_UNORM,
|
||||
DXGI_FORMAT_R9G9B9E5_SHAREDEXP,
|
||||
DXGI_FORMAT_R8G8_B8G8_UNORM,
|
||||
DXGI_FORMAT_G8R8_G8B8_UNORM,
|
||||
DXGI_FORMAT_BC1_TYPELESS,
|
||||
DXGI_FORMAT_BC1_UNORM,
|
||||
DXGI_FORMAT_BC1_UNORM_SRGB,
|
||||
DXGI_FORMAT_BC2_TYPELESS,
|
||||
DXGI_FORMAT_BC2_UNORM,
|
||||
DXGI_FORMAT_BC2_UNORM_SRGB,
|
||||
DXGI_FORMAT_BC3_TYPELESS,
|
||||
DXGI_FORMAT_BC3_UNORM,
|
||||
DXGI_FORMAT_BC3_UNORM_SRGB,
|
||||
DXGI_FORMAT_BC4_TYPELESS,
|
||||
DXGI_FORMAT_BC4_UNORM,
|
||||
DXGI_FORMAT_BC4_SNORM,
|
||||
DXGI_FORMAT_BC5_TYPELESS,
|
||||
DXGI_FORMAT_BC5_UNORM,
|
||||
DXGI_FORMAT_BC5_SNORM,
|
||||
DXGI_FORMAT_B5G6R5_UNORM,
|
||||
DXGI_FORMAT_B5G5R5A1_UNORM,
|
||||
DXGI_FORMAT_B8G8R8A8_UNORM,
|
||||
DXGI_FORMAT_B8G8R8X8_UNORM,
|
||||
DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM,
|
||||
DXGI_FORMAT_B8G8R8A8_TYPELESS,
|
||||
DXGI_FORMAT_B8G8R8A8_UNORM_SRGB,
|
||||
DXGI_FORMAT_B8G8R8X8_TYPELESS,
|
||||
DXGI_FORMAT_B8G8R8X8_UNORM_SRGB,
|
||||
DXGI_FORMAT_BC6H_TYPELESS,
|
||||
DXGI_FORMAT_BC6H_UF16,
|
||||
DXGI_FORMAT_BC6H_SF16,
|
||||
DXGI_FORMAT_BC7_TYPELESS,
|
||||
DXGI_FORMAT_BC7_UNORM,
|
||||
DXGI_FORMAT_BC7_UNORM_SRGB,
|
||||
DXGI_FORMAT_AYUV,
|
||||
DXGI_FORMAT_Y410,
|
||||
DXGI_FORMAT_Y416,
|
||||
DXGI_FORMAT_NV12,
|
||||
DXGI_FORMAT_P010,
|
||||
DXGI_FORMAT_P016,
|
||||
DXGI_FORMAT_420_OPAQUE,
|
||||
DXGI_FORMAT_YUY2,
|
||||
DXGI_FORMAT_Y210,
|
||||
DXGI_FORMAT_Y216,
|
||||
DXGI_FORMAT_NV11,
|
||||
DXGI_FORMAT_AI44,
|
||||
DXGI_FORMAT_IA44,
|
||||
DXGI_FORMAT_P8,
|
||||
DXGI_FORMAT_A8P8,
|
||||
DXGI_FORMAT_B4G4R4A4_UNORM,
|
||||
DXGI_FORMAT_P208,
|
||||
DXGI_FORMAT_V208,
|
||||
DXGI_FORMAT_V408,
|
||||
DXGI_FORMAT_SAMPLER_FEEDBACK_MIN_MIP_OPAQUE,
|
||||
DXGI_FORMAT_SAMPLER_FEEDBACK_MIP_REGION_USED_OPAQUE,
|
||||
DXGI_FORMAT_FORCE_UINT
|
||||
};
|
||||
|
||||
enum DDSFlags : u32 {
|
||||
DDSD_CAPS = 0x1,
|
||||
DDSD_HEIGHT = 0x2,
|
||||
DDSD_WIDTH = 0x4,
|
||||
DDSD_PITCH = 0x8,
|
||||
DDSD_PIXELFORMAT = 0x1000,
|
||||
DDSD_MIPMAPCOUNT = 0x20000,
|
||||
DDSD_LINEARSIZE = 0x80000,
|
||||
DDSD_DEPTH = 0x800000,
|
||||
};
|
||||
|
||||
enum PixelFormatFlags : u32 {
|
||||
DDPF_ALPHAPIXELS = 0x1,
|
||||
DDPF_ALPHA = 0x2,
|
||||
DDPF_FOURCC = 0x4,
|
||||
DDPF_PALETTEINDEXED8 = 0x20,
|
||||
DDPF_RGB = 0x40,
|
||||
DDPF_YUV = 0x200,
|
||||
DDPF_LUMINANCE = 0x20000,
|
||||
DDPF_BUMPDUDV = 0x80000,
|
||||
DDPF_NORMAL = 0x80000000,
|
||||
};
|
||||
|
||||
struct [[gnu::packed]] DDSPixelFormat {
|
||||
u32 size {};
|
||||
u32 flags {};
|
||||
u32 four_cc {};
|
||||
u32 rgb_bit_count {};
|
||||
u32 r_bit_mask {};
|
||||
u32 g_bit_mask {};
|
||||
u32 b_bit_mask {};
|
||||
u32 a_bit_mask {};
|
||||
};
|
||||
|
||||
struct [[gnu::packed]] DDSHeader {
|
||||
u32 size {};
|
||||
u32 flags {};
|
||||
u32 height {};
|
||||
u32 width {};
|
||||
u32 pitch {};
|
||||
u32 depth {};
|
||||
u32 mip_map_count {};
|
||||
u32 reserved[11];
|
||||
DDSPixelFormat pixel_format;
|
||||
u32 caps1 {};
|
||||
u32 caps2 {};
|
||||
u32 caps3 {};
|
||||
u32 caps4 {};
|
||||
u32 reserved2 {};
|
||||
};
|
||||
|
||||
struct [[gnu::packed]] DDSHeaderDXT10 {
|
||||
DXGIFormat format {};
|
||||
u32 resource_dimension {};
|
||||
u32 misc_flag {};
|
||||
u32 array_size {};
|
||||
u32 misc_flag2 {};
|
||||
};
|
||||
|
||||
struct DDSLoadingContext;
|
||||
|
||||
class DDSImageDecoderPlugin final : public ImageDecoderPlugin {
|
||||
public:
|
||||
static bool sniff(ReadonlyBytes);
|
||||
static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);
|
||||
|
||||
virtual ~DDSImageDecoderPlugin() override;
|
||||
|
||||
virtual IntSize size() override;
|
||||
virtual void set_volatile() override;
|
||||
[[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) override;
|
||||
virtual bool initialize() override;
|
||||
virtual bool is_animated() override;
|
||||
virtual size_t loop_count() override;
|
||||
virtual size_t frame_count() override;
|
||||
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
|
||||
virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
|
||||
|
||||
private:
|
||||
DDSImageDecoderPlugin(u8 const*, size_t);
|
||||
|
||||
OwnPtr<DDSLoadingContext> m_context;
|
||||
};
|
||||
|
||||
}
|
||||
|
||||
template<>
|
||||
struct AK::Traits<Gfx::DDSHeader> : public AK::GenericTraits<Gfx::DDSHeader> {
|
||||
static constexpr bool is_trivially_serializable() { return true; }
|
||||
};
|
||||
|
||||
template<>
|
||||
struct AK::Traits<Gfx::DDSHeaderDXT10> : public AK::GenericTraits<Gfx::DDSHeaderDXT10> {
|
||||
static constexpr bool is_trivially_serializable() { return true; }
|
||||
};
|
||||
673
Userland/Libraries/LibGfx/ImageFormats/GIFLoader.cpp
Normal file
673
Userland/Libraries/LibGfx/ImageFormats/GIFLoader.cpp
Normal file
|
|
@ -0,0 +1,673 @@
|
|||
/*
|
||||
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
||||
* Copyright (c) 2022, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include <AK/Array.h>
|
||||
#include <AK/Debug.h>
|
||||
#include <AK/Endian.h>
|
||||
#include <AK/Error.h>
|
||||
#include <AK/IntegralMath.h>
|
||||
#include <AK/Memory.h>
|
||||
#include <AK/MemoryStream.h>
|
||||
#include <AK/Try.h>
|
||||
#include <LibGfx/ImageFormats/GIFLoader.h>
|
||||
#include <string.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
// Row strides and offsets for each interlace pass.
|
||||
static constexpr Array<int, 4> INTERLACE_ROW_STRIDES = { 8, 8, 4, 2 };
|
||||
static constexpr Array<int, 4> INTERLACE_ROW_OFFSETS = { 0, 4, 2, 1 };
|
||||
|
||||
struct GIFImageDescriptor {
|
||||
u16 x { 0 };
|
||||
u16 y { 0 };
|
||||
u16 width { 0 };
|
||||
u16 height { 0 };
|
||||
bool use_global_color_map { true };
|
||||
bool interlaced { false };
|
||||
Color color_map[256];
|
||||
u8 lzw_min_code_size { 0 };
|
||||
Vector<u8> lzw_encoded_bytes;
|
||||
|
||||
// Fields from optional graphic control extension block
|
||||
enum DisposalMethod : u8 {
|
||||
None = 0,
|
||||
InPlace = 1,
|
||||
RestoreBackground = 2,
|
||||
RestorePrevious = 3,
|
||||
};
|
||||
DisposalMethod disposal_method { None };
|
||||
u8 transparency_index { 0 };
|
||||
u16 duration { 0 };
|
||||
bool transparent { false };
|
||||
bool user_input { false };
|
||||
|
||||
const IntRect rect() const
|
||||
{
|
||||
return { this->x, this->y, this->width, this->height };
|
||||
}
|
||||
};
|
||||
|
||||
struct LogicalScreen {
|
||||
u16 width;
|
||||
u16 height;
|
||||
Color color_map[256];
|
||||
};
|
||||
|
||||
struct GIFLoadingContext {
|
||||
enum State {
|
||||
NotDecoded = 0,
|
||||
FrameDescriptorsLoaded,
|
||||
FrameComplete,
|
||||
};
|
||||
State state { NotDecoded };
|
||||
enum ErrorState {
|
||||
NoError = 0,
|
||||
FailedToDecodeAllFrames,
|
||||
FailedToDecodeAnyFrame,
|
||||
FailedToLoadFrameDescriptors,
|
||||
};
|
||||
ErrorState error_state { NoError };
|
||||
u8 const* data { nullptr };
|
||||
size_t data_size { 0 };
|
||||
LogicalScreen logical_screen {};
|
||||
u8 background_color_index { 0 };
|
||||
Vector<NonnullOwnPtr<GIFImageDescriptor>> images {};
|
||||
size_t loops { 1 };
|
||||
RefPtr<Gfx::Bitmap> frame_buffer;
|
||||
size_t current_frame { 0 };
|
||||
RefPtr<Gfx::Bitmap> prev_frame_buffer;
|
||||
};
|
||||
|
||||
enum class GIFFormat {
|
||||
GIF87a,
|
||||
GIF89a,
|
||||
};
|
||||
|
||||
static ErrorOr<GIFFormat> decode_gif_header(Stream& stream)
|
||||
{
|
||||
static auto valid_header_87 = "GIF87a"sv;
|
||||
static auto valid_header_89 = "GIF89a"sv;
|
||||
|
||||
Array<u8, 6> header;
|
||||
TRY(stream.read_until_filled(header));
|
||||
|
||||
if (header.span() == valid_header_87.bytes())
|
||||
return GIFFormat::GIF87a;
|
||||
if (header.span() == valid_header_89.bytes())
|
||||
return GIFFormat::GIF89a;
|
||||
|
||||
return Error::from_string_literal("GIF header unknown");
|
||||
}
|
||||
|
||||
class LZWDecoder {
|
||||
private:
|
||||
static constexpr int max_code_size = 12;
|
||||
|
||||
public:
|
||||
explicit LZWDecoder(Vector<u8> const& lzw_bytes, u8 min_code_size)
|
||||
: m_lzw_bytes(lzw_bytes)
|
||||
, m_code_size(min_code_size)
|
||||
, m_original_code_size(min_code_size)
|
||||
, m_table_capacity(AK::exp2<u32>(min_code_size))
|
||||
{
|
||||
init_code_table();
|
||||
}
|
||||
|
||||
u16 add_control_code()
|
||||
{
|
||||
const u16 control_code = m_code_table.size();
|
||||
m_code_table.append(Vector<u8> {});
|
||||
m_original_code_table.append(Vector<u8> {});
|
||||
if (m_code_table.size() >= m_table_capacity && m_code_size < max_code_size) {
|
||||
|
||||
++m_code_size;
|
||||
++m_original_code_size;
|
||||
m_table_capacity *= 2;
|
||||
}
|
||||
return control_code;
|
||||
}
|
||||
|
||||
void reset()
|
||||
{
|
||||
m_code_table.clear();
|
||||
m_code_table.extend(m_original_code_table);
|
||||
m_code_size = m_original_code_size;
|
||||
m_table_capacity = AK::exp2<u32>(m_code_size);
|
||||
m_output.clear();
|
||||
}
|
||||
|
||||
ErrorOr<u16> next_code()
|
||||
{
|
||||
size_t current_byte_index = m_current_bit_index / 8;
|
||||
if (current_byte_index >= m_lzw_bytes.size()) {
|
||||
return Error::from_string_literal("LZWDecoder tries to read ouf of bounds");
|
||||
}
|
||||
|
||||
// Extract the code bits using a 32-bit mask to cover the possibility that if
|
||||
// the current code size > 9 bits then the code can span 3 bytes.
|
||||
u8 current_bit_offset = m_current_bit_index % 8;
|
||||
u32 mask = (u32)(m_table_capacity - 1) << current_bit_offset;
|
||||
|
||||
// Make a padded copy of the final bytes in the data to ensure we don't read past the end.
|
||||
if (current_byte_index + sizeof(mask) > m_lzw_bytes.size()) {
|
||||
u8 padded_last_bytes[sizeof(mask)] = { 0 };
|
||||
for (int i = 0; current_byte_index + i < m_lzw_bytes.size(); ++i) {
|
||||
padded_last_bytes[i] = m_lzw_bytes[current_byte_index + i];
|
||||
}
|
||||
u32 const* addr = (u32 const*)&padded_last_bytes;
|
||||
m_current_code = (*addr & mask) >> current_bit_offset;
|
||||
} else {
|
||||
u32 tmp_word;
|
||||
memcpy(&tmp_word, &m_lzw_bytes.at(current_byte_index), sizeof(u32));
|
||||
m_current_code = (tmp_word & mask) >> current_bit_offset;
|
||||
}
|
||||
|
||||
if (m_current_code > m_code_table.size()) {
|
||||
dbgln_if(GIF_DEBUG, "Corrupted LZW stream, invalid code: {} at bit index {}, code table size: {}",
|
||||
m_current_code,
|
||||
m_current_bit_index,
|
||||
m_code_table.size());
|
||||
return Error::from_string_literal("Corrupted LZW stream, invalid code");
|
||||
} else if (m_current_code == m_code_table.size() && m_output.is_empty()) {
|
||||
dbgln_if(GIF_DEBUG, "Corrupted LZW stream, valid new code but output buffer is empty: {} at bit index {}, code table size: {}",
|
||||
m_current_code,
|
||||
m_current_bit_index,
|
||||
m_code_table.size());
|
||||
return Error::from_string_literal("Corrupted LZW stream, valid new code but output buffer is empty");
|
||||
}
|
||||
|
||||
m_current_bit_index += m_code_size;
|
||||
|
||||
return m_current_code;
|
||||
}
|
||||
|
||||
Vector<u8>& get_output()
|
||||
{
|
||||
VERIFY(m_current_code <= m_code_table.size());
|
||||
if (m_current_code < m_code_table.size()) {
|
||||
Vector<u8> new_entry = m_output;
|
||||
m_output = m_code_table.at(m_current_code);
|
||||
new_entry.append(m_output[0]);
|
||||
extend_code_table(new_entry);
|
||||
} else if (m_current_code == m_code_table.size()) {
|
||||
VERIFY(!m_output.is_empty());
|
||||
m_output.append(m_output[0]);
|
||||
extend_code_table(m_output);
|
||||
}
|
||||
return m_output;
|
||||
}
|
||||
|
||||
private:
|
||||
void init_code_table()
|
||||
{
|
||||
m_code_table.ensure_capacity(m_table_capacity);
|
||||
for (u16 i = 0; i < m_table_capacity; ++i) {
|
||||
m_code_table.unchecked_append({ (u8)i });
|
||||
}
|
||||
m_original_code_table = m_code_table;
|
||||
}
|
||||
|
||||
void extend_code_table(Vector<u8> const& entry)
|
||||
{
|
||||
if (entry.size() > 1 && m_code_table.size() < 4096) {
|
||||
m_code_table.append(entry);
|
||||
if (m_code_table.size() >= m_table_capacity && m_code_size < max_code_size) {
|
||||
++m_code_size;
|
||||
m_table_capacity *= 2;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Vector<u8> const& m_lzw_bytes;
|
||||
|
||||
int m_current_bit_index { 0 };
|
||||
|
||||
Vector<Vector<u8>> m_code_table {};
|
||||
Vector<Vector<u8>> m_original_code_table {};
|
||||
|
||||
u8 m_code_size { 0 };
|
||||
u8 m_original_code_size { 0 };
|
||||
|
||||
u32 m_table_capacity { 0 };
|
||||
|
||||
u16 m_current_code { 0 };
|
||||
Vector<u8> m_output {};
|
||||
};
|
||||
|
||||
static void copy_frame_buffer(Bitmap& dest, Bitmap const& src)
|
||||
{
|
||||
VERIFY(dest.size_in_bytes() == src.size_in_bytes());
|
||||
memcpy(dest.scanline(0), src.scanline(0), dest.size_in_bytes());
|
||||
}
|
||||
|
||||
static void clear_rect(Bitmap& bitmap, IntRect const& rect, Color color)
|
||||
{
|
||||
auto intersection_rect = rect.intersected(bitmap.rect());
|
||||
if (intersection_rect.is_empty())
|
||||
return;
|
||||
|
||||
ARGB32* dst = bitmap.scanline(intersection_rect.top()) + intersection_rect.left();
|
||||
const size_t dst_skip = bitmap.pitch() / sizeof(ARGB32);
|
||||
|
||||
for (int i = intersection_rect.height() - 1; i >= 0; --i) {
|
||||
fast_u32_fill(dst, color.value(), intersection_rect.width());
|
||||
dst += dst_skip;
|
||||
}
|
||||
}
|
||||
|
||||
static ErrorOr<void> decode_frame(GIFLoadingContext& context, size_t frame_index)
|
||||
{
|
||||
if (frame_index >= context.images.size()) {
|
||||
return Error::from_string_literal("frame_index size too high");
|
||||
}
|
||||
|
||||
if (context.state >= GIFLoadingContext::State::FrameComplete && frame_index == context.current_frame) {
|
||||
return {};
|
||||
}
|
||||
|
||||
size_t start_frame = context.current_frame + 1;
|
||||
if (context.state < GIFLoadingContext::State::FrameComplete) {
|
||||
start_frame = 0;
|
||||
context.frame_buffer = TRY(Bitmap::create(BitmapFormat::BGRA8888, { context.logical_screen.width, context.logical_screen.height }));
|
||||
context.prev_frame_buffer = TRY(Bitmap::create(BitmapFormat::BGRA8888, { context.logical_screen.width, context.logical_screen.height }));
|
||||
|
||||
} else if (frame_index < context.current_frame) {
|
||||
start_frame = 0;
|
||||
}
|
||||
|
||||
for (size_t i = start_frame; i <= frame_index; ++i) {
|
||||
auto& image = context.images.at(i);
|
||||
|
||||
auto const previous_image_disposal_method = i > 0 ? context.images.at(i - 1)->disposal_method : GIFImageDescriptor::DisposalMethod::None;
|
||||
|
||||
if (i == 0) {
|
||||
context.frame_buffer->fill(Color::Transparent);
|
||||
} else if (i > 0 && image->disposal_method == GIFImageDescriptor::DisposalMethod::RestorePrevious
|
||||
&& previous_image_disposal_method != GIFImageDescriptor::DisposalMethod::RestorePrevious) {
|
||||
// This marks the start of a run of frames that once disposed should be restored to the
|
||||
// previous underlying image contents. Therefore we make a copy of the current frame
|
||||
// buffer so that it can be restored later.
|
||||
copy_frame_buffer(*context.prev_frame_buffer, *context.frame_buffer);
|
||||
}
|
||||
|
||||
if (previous_image_disposal_method == GIFImageDescriptor::DisposalMethod::RestoreBackground) {
|
||||
// Note: RestoreBackground could be interpreted either as restoring the underlying
|
||||
// background of the entire image (e.g. container element's background-color), or the
|
||||
// background color of the GIF itself. It appears that all major browsers and most other
|
||||
// GIF decoders adhere to the former interpretation, therefore we will do the same by
|
||||
// clearing the entire frame buffer to transparent.
|
||||
clear_rect(*context.frame_buffer, context.images[i - 1]->rect(), Color::Transparent);
|
||||
} else if (i > 0 && previous_image_disposal_method == GIFImageDescriptor::DisposalMethod::RestorePrevious) {
|
||||
// Previous frame indicated that once disposed, it should be restored to *its* previous
|
||||
// underlying image contents, therefore we restore the saved previous frame buffer.
|
||||
copy_frame_buffer(*context.frame_buffer, *context.prev_frame_buffer);
|
||||
}
|
||||
|
||||
if (image->lzw_min_code_size > 8)
|
||||
return Error::from_string_literal("LZW minimum code size is greater than 8");
|
||||
|
||||
LZWDecoder decoder(image->lzw_encoded_bytes, image->lzw_min_code_size);
|
||||
|
||||
// Add GIF-specific control codes
|
||||
int const clear_code = decoder.add_control_code();
|
||||
int const end_of_information_code = decoder.add_control_code();
|
||||
|
||||
auto const& color_map = image->use_global_color_map ? context.logical_screen.color_map : image->color_map;
|
||||
|
||||
int pixel_index = 0;
|
||||
int row = 0;
|
||||
int interlace_pass = 0;
|
||||
while (true) {
|
||||
ErrorOr<u16> code = decoder.next_code();
|
||||
if (code.is_error()) {
|
||||
dbgln_if(GIF_DEBUG, "Unexpectedly reached end of gif frame data");
|
||||
return code.release_error();
|
||||
}
|
||||
|
||||
if (code.value() == clear_code) {
|
||||
decoder.reset();
|
||||
continue;
|
||||
}
|
||||
if (code.value() == end_of_information_code)
|
||||
break;
|
||||
if (!image->width)
|
||||
continue;
|
||||
|
||||
auto colors = decoder.get_output();
|
||||
for (auto const& color : colors) {
|
||||
auto c = color_map[color];
|
||||
|
||||
int x = pixel_index % image->width + image->x;
|
||||
int y = row + image->y;
|
||||
|
||||
if (context.frame_buffer->rect().contains(x, y) && (!image->transparent || color != image->transparency_index)) {
|
||||
context.frame_buffer->set_pixel(x, y, c);
|
||||
}
|
||||
|
||||
++pixel_index;
|
||||
if (pixel_index % image->width == 0) {
|
||||
if (image->interlaced) {
|
||||
if (interlace_pass < 4) {
|
||||
if (row + INTERLACE_ROW_STRIDES[interlace_pass] >= image->height) {
|
||||
++interlace_pass;
|
||||
if (interlace_pass < 4)
|
||||
row = INTERLACE_ROW_OFFSETS[interlace_pass];
|
||||
} else {
|
||||
row += INTERLACE_ROW_STRIDES[interlace_pass];
|
||||
}
|
||||
}
|
||||
} else {
|
||||
++row;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
context.current_frame = i;
|
||||
context.state = GIFLoadingContext::State::FrameComplete;
|
||||
}
|
||||
|
||||
return {};
|
||||
}
|
||||
|
||||
static ErrorOr<void> load_gif_frame_descriptors(GIFLoadingContext& context)
|
||||
{
|
||||
if (context.data_size < 32)
|
||||
return Error::from_string_literal("Size too short for GIF frame descriptors");
|
||||
|
||||
FixedMemoryStream stream { { context.data, context.data_size } };
|
||||
|
||||
TRY(decode_gif_header(stream));
|
||||
|
||||
context.logical_screen.width = TRY(stream.read_value<LittleEndian<u16>>());
|
||||
context.logical_screen.height = TRY(stream.read_value<LittleEndian<u16>>());
|
||||
|
||||
if (context.logical_screen.width > maximum_width_for_decoded_images || context.logical_screen.height > maximum_height_for_decoded_images) {
|
||||
dbgln("This GIF is too large for comfort: {}x{}", context.logical_screen.width, context.logical_screen.height);
|
||||
return Error::from_string_literal("This GIF is too large for comfort");
|
||||
}
|
||||
|
||||
auto gcm_info = TRY(stream.read_value<u8>());
|
||||
context.background_color_index = TRY(stream.read_value<u8>());
|
||||
[[maybe_unused]] auto pixel_aspect_ratio = TRY(stream.read_value<u8>());
|
||||
|
||||
u8 bits_per_pixel = (gcm_info & 7) + 1;
|
||||
int color_map_entry_count = 1;
|
||||
for (int i = 0; i < bits_per_pixel; ++i)
|
||||
color_map_entry_count *= 2;
|
||||
|
||||
for (int i = 0; i < color_map_entry_count; ++i) {
|
||||
u8 r = TRY(stream.read_value<u8>());
|
||||
u8 g = TRY(stream.read_value<u8>());
|
||||
u8 b = TRY(stream.read_value<u8>());
|
||||
context.logical_screen.color_map[i] = { r, g, b };
|
||||
}
|
||||
|
||||
NonnullOwnPtr<GIFImageDescriptor> current_image = make<GIFImageDescriptor>();
|
||||
for (;;) {
|
||||
u8 sentinel = TRY(stream.read_value<u8>());
|
||||
|
||||
if (sentinel == '!') {
|
||||
u8 extension_type = TRY(stream.read_value<u8>());
|
||||
|
||||
u8 sub_block_length = 0;
|
||||
|
||||
Vector<u8> sub_block {};
|
||||
for (;;) {
|
||||
sub_block_length = TRY(stream.read_value<u8>());
|
||||
if (sub_block_length == 0)
|
||||
break;
|
||||
|
||||
TRY(sub_block.try_resize(sub_block.size() + sub_block_length));
|
||||
TRY(stream.read_until_filled(sub_block.span().slice_from_end(sub_block_length)));
|
||||
}
|
||||
|
||||
if (extension_type == 0xF9) {
|
||||
if (sub_block.size() != 4) {
|
||||
dbgln_if(GIF_DEBUG, "Unexpected graphic control size");
|
||||
continue;
|
||||
}
|
||||
|
||||
u8 disposal_method = (sub_block[0] & 0x1C) >> 2;
|
||||
current_image->disposal_method = (GIFImageDescriptor::DisposalMethod)disposal_method;
|
||||
|
||||
u8 user_input = (sub_block[0] & 0x2) >> 1;
|
||||
current_image->user_input = user_input == 1;
|
||||
|
||||
u8 transparent = sub_block[0] & 1;
|
||||
current_image->transparent = transparent == 1;
|
||||
|
||||
u16 duration = sub_block[1] + ((u16)sub_block[2] << 8);
|
||||
current_image->duration = duration;
|
||||
|
||||
current_image->transparency_index = sub_block[3];
|
||||
}
|
||||
|
||||
if (extension_type == 0xFF) {
|
||||
if (sub_block.size() != 14) {
|
||||
dbgln_if(GIF_DEBUG, "Unexpected application extension size: {}", sub_block.size());
|
||||
continue;
|
||||
}
|
||||
|
||||
if (sub_block[11] != 1) {
|
||||
dbgln_if(GIF_DEBUG, "Unexpected application extension format");
|
||||
continue;
|
||||
}
|
||||
|
||||
u16 loops = sub_block[12] + (sub_block[13] << 8);
|
||||
context.loops = loops;
|
||||
}
|
||||
|
||||
continue;
|
||||
}
|
||||
|
||||
if (sentinel == ',') {
|
||||
context.images.append(move(current_image));
|
||||
auto& image = context.images.last();
|
||||
|
||||
image->x = TRY(stream.read_value<LittleEndian<u16>>());
|
||||
image->y = TRY(stream.read_value<LittleEndian<u16>>());
|
||||
image->width = TRY(stream.read_value<LittleEndian<u16>>());
|
||||
image->height = TRY(stream.read_value<LittleEndian<u16>>());
|
||||
|
||||
auto packed_fields = TRY(stream.read_value<u8>());
|
||||
|
||||
image->use_global_color_map = !(packed_fields & 0x80);
|
||||
image->interlaced = (packed_fields & 0x40) != 0;
|
||||
|
||||
if (!image->use_global_color_map) {
|
||||
size_t local_color_table_size = AK::exp2<size_t>((packed_fields & 7) + 1);
|
||||
|
||||
for (size_t i = 0; i < local_color_table_size; ++i) {
|
||||
u8 r = TRY(stream.read_value<u8>());
|
||||
u8 g = TRY(stream.read_value<u8>());
|
||||
u8 b = TRY(stream.read_value<u8>());
|
||||
image->color_map[i] = { r, g, b };
|
||||
}
|
||||
}
|
||||
|
||||
image->lzw_min_code_size = TRY(stream.read_value<u8>());
|
||||
|
||||
u8 lzw_encoded_bytes_expected = 0;
|
||||
|
||||
for (;;) {
|
||||
lzw_encoded_bytes_expected = TRY(stream.read_value<u8>());
|
||||
if (lzw_encoded_bytes_expected == 0)
|
||||
break;
|
||||
|
||||
Array<u8, 256> buffer;
|
||||
TRY(stream.read_until_filled(buffer.span().trim(lzw_encoded_bytes_expected)));
|
||||
|
||||
for (int i = 0; i < lzw_encoded_bytes_expected; ++i) {
|
||||
image->lzw_encoded_bytes.append(buffer[i]);
|
||||
}
|
||||
}
|
||||
|
||||
current_image = make<GIFImageDescriptor>();
|
||||
continue;
|
||||
}
|
||||
|
||||
if (sentinel == ';') {
|
||||
break;
|
||||
}
|
||||
|
||||
return Error::from_string_literal("Unexpected sentinel");
|
||||
}
|
||||
|
||||
context.state = GIFLoadingContext::State::FrameDescriptorsLoaded;
|
||||
return {};
|
||||
}
|
||||
|
||||
GIFImageDecoderPlugin::GIFImageDecoderPlugin(u8 const* data, size_t size)
|
||||
{
|
||||
m_context = make<GIFLoadingContext>();
|
||||
m_context->data = data;
|
||||
m_context->data_size = size;
|
||||
}
|
||||
|
||||
GIFImageDecoderPlugin::~GIFImageDecoderPlugin() = default;
|
||||
|
||||
IntSize GIFImageDecoderPlugin::size()
|
||||
{
|
||||
if (m_context->error_state == GIFLoadingContext::ErrorState::FailedToLoadFrameDescriptors) {
|
||||
return {};
|
||||
}
|
||||
|
||||
if (m_context->state < GIFLoadingContext::State::FrameDescriptorsLoaded) {
|
||||
if (load_gif_frame_descriptors(*m_context).is_error()) {
|
||||
m_context->error_state = GIFLoadingContext::ErrorState::FailedToLoadFrameDescriptors;
|
||||
return {};
|
||||
}
|
||||
}
|
||||
|
||||
return { m_context->logical_screen.width, m_context->logical_screen.height };
|
||||
}
|
||||
|
||||
void GIFImageDecoderPlugin::set_volatile()
|
||||
{
|
||||
if (m_context->frame_buffer) {
|
||||
m_context->frame_buffer->set_volatile();
|
||||
}
|
||||
}
|
||||
|
||||
bool GIFImageDecoderPlugin::set_nonvolatile(bool& was_purged)
|
||||
{
|
||||
if (!m_context->frame_buffer)
|
||||
return false;
|
||||
return m_context->frame_buffer->set_nonvolatile(was_purged);
|
||||
}
|
||||
|
||||
bool GIFImageDecoderPlugin::initialize()
|
||||
{
|
||||
FixedMemoryStream stream { { m_context->data, m_context->data_size } };
|
||||
return !decode_gif_header(stream).is_error();
|
||||
}
|
||||
|
||||
bool GIFImageDecoderPlugin::sniff(ReadonlyBytes data)
|
||||
{
|
||||
FixedMemoryStream stream { data };
|
||||
return !decode_gif_header(stream).is_error();
|
||||
}
|
||||
|
||||
ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> GIFImageDecoderPlugin::create(ReadonlyBytes data)
|
||||
{
|
||||
return adopt_nonnull_own_or_enomem(new (nothrow) GIFImageDecoderPlugin(data.data(), data.size()));
|
||||
}
|
||||
|
||||
bool GIFImageDecoderPlugin::is_animated()
|
||||
{
|
||||
if (m_context->error_state != GIFLoadingContext::ErrorState::NoError) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (m_context->state < GIFLoadingContext::State::FrameDescriptorsLoaded) {
|
||||
if (load_gif_frame_descriptors(*m_context).is_error()) {
|
||||
m_context->error_state = GIFLoadingContext::ErrorState::FailedToLoadFrameDescriptors;
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return m_context->images.size() > 1;
|
||||
}
|
||||
|
||||
size_t GIFImageDecoderPlugin::loop_count()
|
||||
{
|
||||
if (m_context->error_state != GIFLoadingContext::ErrorState::NoError) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (m_context->state < GIFLoadingContext::State::FrameDescriptorsLoaded) {
|
||||
if (load_gif_frame_descriptors(*m_context).is_error()) {
|
||||
m_context->error_state = GIFLoadingContext::ErrorState::FailedToLoadFrameDescriptors;
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return m_context->loops;
|
||||
}
|
||||
|
||||
size_t GIFImageDecoderPlugin::frame_count()
|
||||
{
|
||||
if (m_context->error_state != GIFLoadingContext::ErrorState::NoError) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (m_context->state < GIFLoadingContext::State::FrameDescriptorsLoaded) {
|
||||
if (load_gif_frame_descriptors(*m_context).is_error()) {
|
||||
m_context->error_state = GIFLoadingContext::ErrorState::FailedToLoadFrameDescriptors;
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
return m_context->images.size();
|
||||
}
|
||||
|
||||
ErrorOr<ImageFrameDescriptor> GIFImageDecoderPlugin::frame(size_t index)
|
||||
{
|
||||
if (m_context->error_state >= GIFLoadingContext::ErrorState::FailedToDecodeAnyFrame) {
|
||||
return Error::from_string_literal("GIFImageDecoderPlugin: Decoding failed");
|
||||
}
|
||||
|
||||
if (m_context->state < GIFLoadingContext::State::FrameDescriptorsLoaded) {
|
||||
if (auto result = load_gif_frame_descriptors(*m_context); result.is_error()) {
|
||||
m_context->error_state = GIFLoadingContext::ErrorState::FailedToLoadFrameDescriptors;
|
||||
return result.release_error();
|
||||
}
|
||||
}
|
||||
|
||||
if (m_context->error_state == GIFLoadingContext::ErrorState::NoError) {
|
||||
if (auto result = decode_frame(*m_context, index); result.is_error()) {
|
||||
if (m_context->state < GIFLoadingContext::State::FrameComplete) {
|
||||
m_context->error_state = GIFLoadingContext::ErrorState::FailedToDecodeAnyFrame;
|
||||
return result.release_error();
|
||||
}
|
||||
if (auto result = decode_frame(*m_context, 0); result.is_error()) {
|
||||
m_context->error_state = GIFLoadingContext::ErrorState::FailedToDecodeAnyFrame;
|
||||
return result.release_error();
|
||||
}
|
||||
m_context->error_state = GIFLoadingContext::ErrorState::FailedToDecodeAllFrames;
|
||||
}
|
||||
}
|
||||
|
||||
ImageFrameDescriptor frame {};
|
||||
frame.image = TRY(m_context->frame_buffer->clone());
|
||||
frame.duration = m_context->images[index]->duration * 10;
|
||||
|
||||
if (frame.duration <= 10) {
|
||||
frame.duration = 100;
|
||||
}
|
||||
|
||||
return frame;
|
||||
}
|
||||
|
||||
ErrorOr<Optional<ReadonlyBytes>> GIFImageDecoderPlugin::icc_data()
|
||||
{
|
||||
return OptionalNone {};
|
||||
}
|
||||
|
||||
}
|
||||
39
Userland/Libraries/LibGfx/ImageFormats/GIFLoader.h
Normal file
39
Userland/Libraries/LibGfx/ImageFormats/GIFLoader.h
Normal file
|
|
@ -0,0 +1,39 @@
|
|||
/*
|
||||
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <LibGfx/Bitmap.h>
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
struct GIFLoadingContext;
|
||||
|
||||
class GIFImageDecoderPlugin final : public ImageDecoderPlugin {
|
||||
public:
|
||||
static bool sniff(ReadonlyBytes);
|
||||
static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);
|
||||
|
||||
virtual ~GIFImageDecoderPlugin() override;
|
||||
|
||||
virtual IntSize size() override;
|
||||
virtual void set_volatile() override;
|
||||
[[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) override;
|
||||
virtual bool initialize() override;
|
||||
virtual bool is_animated() override;
|
||||
virtual size_t loop_count() override;
|
||||
virtual size_t frame_count() override;
|
||||
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
|
||||
virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
|
||||
|
||||
private:
|
||||
GIFImageDecoderPlugin(u8 const*, size_t);
|
||||
|
||||
OwnPtr<GIFLoadingContext> m_context;
|
||||
};
|
||||
|
||||
}
|
||||
281
Userland/Libraries/LibGfx/ImageFormats/ICOLoader.cpp
Normal file
281
Userland/Libraries/LibGfx/ImageFormats/ICOLoader.cpp
Normal file
|
|
@ -0,0 +1,281 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Paul Roukema <roukemap@gmail.com>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include <AK/ByteBuffer.h>
|
||||
#include <AK/Debug.h>
|
||||
#include <AK/MemoryStream.h>
|
||||
#include <AK/Types.h>
|
||||
#include <LibGfx/ImageFormats/BMPLoader.h>
|
||||
#include <LibGfx/ImageFormats/ICOLoader.h>
|
||||
#include <LibGfx/ImageFormats/PNGLoader.h>
|
||||
#include <string.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
// FIXME: This is in little-endian order. Maybe need a NetworkOrdered<T> equivalent eventually.
|
||||
struct ICONDIR {
|
||||
u16 must_be_0 = 0;
|
||||
u16 must_be_1 = 0;
|
||||
u16 image_count = 0;
|
||||
};
|
||||
static_assert(AssertSize<ICONDIR, 6>());
|
||||
|
||||
struct ICONDIRENTRY {
|
||||
u8 width;
|
||||
u8 height;
|
||||
u8 color_count;
|
||||
u8 reserved_0;
|
||||
u16 planes;
|
||||
u16 bits_per_pixel;
|
||||
u32 size;
|
||||
u32 offset;
|
||||
};
|
||||
static_assert(AssertSize<ICONDIRENTRY, 16>());
|
||||
|
||||
};
|
||||
|
||||
template<>
|
||||
class AK::Traits<Gfx::ICONDIR> : public GenericTraits<Gfx::ICONDIR> {
|
||||
public:
|
||||
static constexpr bool is_trivially_serializable() { return true; }
|
||||
};
|
||||
|
||||
template<>
|
||||
class AK::Traits<Gfx::ICONDIRENTRY> : public GenericTraits<Gfx::ICONDIRENTRY> {
|
||||
public:
|
||||
static constexpr bool is_trivially_serializable() { return true; }
|
||||
};
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
struct ICOImageDescriptor {
|
||||
u16 width;
|
||||
u16 height;
|
||||
u16 bits_per_pixel;
|
||||
size_t offset;
|
||||
size_t size;
|
||||
RefPtr<Gfx::Bitmap> bitmap;
|
||||
};
|
||||
|
||||
struct ICOLoadingContext {
|
||||
enum State {
|
||||
NotDecoded = 0,
|
||||
Error,
|
||||
DirectoryDecoded,
|
||||
BitmapDecoded
|
||||
};
|
||||
State state { NotDecoded };
|
||||
u8 const* data { nullptr };
|
||||
size_t data_size { 0 };
|
||||
Vector<ICOImageDescriptor> images;
|
||||
size_t largest_index;
|
||||
};
|
||||
|
||||
static ErrorOr<size_t> decode_ico_header(Stream& stream)
|
||||
{
|
||||
auto header = TRY(stream.read_value<ICONDIR>());
|
||||
if (header.must_be_0 != 0 || header.must_be_1 != 1)
|
||||
return Error::from_string_literal("Invalid ICO header");
|
||||
return { header.image_count };
|
||||
}
|
||||
|
||||
static ErrorOr<ICOImageDescriptor> decode_ico_direntry(Stream& stream)
|
||||
{
|
||||
auto entry = TRY(stream.read_value<ICONDIRENTRY>());
|
||||
ICOImageDescriptor desc = { entry.width, entry.height, entry.bits_per_pixel, entry.offset, entry.size, nullptr };
|
||||
if (desc.width == 0)
|
||||
desc.width = 256;
|
||||
if (desc.height == 0)
|
||||
desc.height = 256;
|
||||
|
||||
return { desc };
|
||||
}
|
||||
|
||||
static size_t find_largest_image(ICOLoadingContext const& context)
|
||||
{
|
||||
size_t max_area = 0;
|
||||
size_t index = 0;
|
||||
size_t largest_index = 0;
|
||||
u16 max_bits_per_pixel = 0;
|
||||
for (auto const& desc : context.images) {
|
||||
if (static_cast<size_t>(desc.width) * static_cast<size_t>(desc.height) >= max_area) {
|
||||
if (desc.bits_per_pixel > max_bits_per_pixel) {
|
||||
max_area = desc.width * desc.height;
|
||||
largest_index = index;
|
||||
max_bits_per_pixel = desc.bits_per_pixel;
|
||||
}
|
||||
}
|
||||
++index;
|
||||
}
|
||||
return largest_index;
|
||||
}
|
||||
|
||||
static ErrorOr<void> load_ico_directory(ICOLoadingContext& context)
|
||||
{
|
||||
FixedMemoryStream stream { { context.data, context.data_size } };
|
||||
|
||||
auto image_count = TRY(decode_ico_header(stream));
|
||||
if (image_count == 0)
|
||||
return Error::from_string_literal("ICO file has no images");
|
||||
|
||||
for (size_t i = 0; i < image_count; ++i) {
|
||||
auto desc = TRY(decode_ico_direntry(stream));
|
||||
if (desc.offset + desc.size < desc.offset // detect integer overflow
|
||||
|| (desc.offset + desc.size) > context.data_size) {
|
||||
dbgln_if(ICO_DEBUG, "load_ico_directory: offset: {} size: {} doesn't fit in ICO size: {}", desc.offset, desc.size, context.data_size);
|
||||
return Error::from_string_literal("ICO size too large");
|
||||
}
|
||||
dbgln_if(ICO_DEBUG, "load_ico_directory: index {} width: {} height: {} offset: {} size: {}", i, desc.width, desc.height, desc.offset, desc.size);
|
||||
TRY(context.images.try_append(desc));
|
||||
}
|
||||
context.largest_index = find_largest_image(context);
|
||||
context.state = ICOLoadingContext::State::DirectoryDecoded;
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> ICOImageDecoderPlugin::load_ico_bitmap(ICOLoadingContext& context, Optional<size_t> index)
|
||||
{
|
||||
if (context.state < ICOLoadingContext::State::DirectoryDecoded)
|
||||
TRY(load_ico_directory(context));
|
||||
|
||||
size_t real_index = context.largest_index;
|
||||
if (index.has_value())
|
||||
real_index = index.value();
|
||||
if (real_index >= context.images.size())
|
||||
return Error::from_string_literal("Index out of bounds");
|
||||
|
||||
ICOImageDescriptor& desc = context.images[real_index];
|
||||
if (PNGImageDecoderPlugin::sniff({ context.data + desc.offset, desc.size })) {
|
||||
auto png_decoder = TRY(PNGImageDecoderPlugin::create({ context.data + desc.offset, desc.size }));
|
||||
if (png_decoder->initialize()) {
|
||||
auto decoded_png_frame = TRY(png_decoder->frame(0));
|
||||
if (!decoded_png_frame.image) {
|
||||
dbgln_if(ICO_DEBUG, "load_ico_bitmap: failed to load PNG encoded image index: {}", real_index);
|
||||
return Error::from_string_literal("Encoded image not null");
|
||||
}
|
||||
desc.bitmap = decoded_png_frame.image;
|
||||
return {};
|
||||
}
|
||||
return Error::from_string_literal("Couldn't initialize PNG Decoder");
|
||||
} else {
|
||||
auto bmp_decoder = TRY(BMPImageDecoderPlugin::create_as_included_in_ico({}, { context.data + desc.offset, desc.size }));
|
||||
// NOTE: We don't initialize a BMP decoder in the usual way, but rather
|
||||
// we just create an object and try to sniff for a frame when it's included
|
||||
// inside an ICO image.
|
||||
if (bmp_decoder->sniff_dib()) {
|
||||
auto decoded_bmp_frame = TRY(bmp_decoder->frame(0));
|
||||
if (!decoded_bmp_frame.image) {
|
||||
dbgln_if(ICO_DEBUG, "load_ico_bitmap: failed to load BMP encoded image index: {}", real_index);
|
||||
return Error::from_string_literal("Encoded image not null");
|
||||
}
|
||||
desc.bitmap = decoded_bmp_frame.image;
|
||||
} else {
|
||||
dbgln_if(ICO_DEBUG, "load_ico_bitmap: encoded image not supported at index: {}", real_index);
|
||||
return Error::from_string_literal("Encoded image not supported");
|
||||
}
|
||||
return {};
|
||||
}
|
||||
}
|
||||
|
||||
bool ICOImageDecoderPlugin::sniff(ReadonlyBytes data)
|
||||
{
|
||||
FixedMemoryStream stream { data };
|
||||
return !decode_ico_header(stream).is_error();
|
||||
}
|
||||
|
||||
ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> ICOImageDecoderPlugin::create(ReadonlyBytes data)
|
||||
{
|
||||
return adopt_nonnull_own_or_enomem(new (nothrow) ICOImageDecoderPlugin(data.data(), data.size()));
|
||||
}
|
||||
|
||||
ICOImageDecoderPlugin::ICOImageDecoderPlugin(u8 const* data, size_t size)
|
||||
{
|
||||
m_context = make<ICOLoadingContext>();
|
||||
m_context->data = data;
|
||||
m_context->data_size = size;
|
||||
}
|
||||
|
||||
ICOImageDecoderPlugin::~ICOImageDecoderPlugin() = default;
|
||||
|
||||
IntSize ICOImageDecoderPlugin::size()
|
||||
{
|
||||
if (m_context->state == ICOLoadingContext::State::Error) {
|
||||
return {};
|
||||
}
|
||||
|
||||
if (m_context->state < ICOLoadingContext::State::DirectoryDecoded) {
|
||||
if (!load_ico_directory(*m_context).is_error()) {
|
||||
m_context->state = ICOLoadingContext::State::Error;
|
||||
return {};
|
||||
}
|
||||
m_context->state = ICOLoadingContext::State::DirectoryDecoded;
|
||||
}
|
||||
|
||||
return { m_context->images[m_context->largest_index].width, m_context->images[m_context->largest_index].height };
|
||||
}
|
||||
|
||||
void ICOImageDecoderPlugin::set_volatile()
|
||||
{
|
||||
if (m_context->images[0].bitmap)
|
||||
m_context->images[0].bitmap->set_volatile();
|
||||
}
|
||||
|
||||
bool ICOImageDecoderPlugin::set_nonvolatile(bool& was_purged)
|
||||
{
|
||||
if (!m_context->images[0].bitmap)
|
||||
return false;
|
||||
return m_context->images[0].bitmap->set_nonvolatile(was_purged);
|
||||
}
|
||||
|
||||
bool ICOImageDecoderPlugin::initialize()
|
||||
{
|
||||
FixedMemoryStream stream { { m_context->data, m_context->data_size } };
|
||||
return !decode_ico_header(stream).is_error();
|
||||
}
|
||||
|
||||
bool ICOImageDecoderPlugin::is_animated()
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
size_t ICOImageDecoderPlugin::loop_count()
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
size_t ICOImageDecoderPlugin::frame_count()
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
ErrorOr<ImageFrameDescriptor> ICOImageDecoderPlugin::frame(size_t index)
|
||||
{
|
||||
if (index > 0)
|
||||
return Error::from_string_literal("ICOImageDecoderPlugin: Invalid frame index");
|
||||
|
||||
if (m_context->state == ICOLoadingContext::State::Error)
|
||||
return Error::from_string_literal("ICOImageDecoderPlugin: Decoding failed");
|
||||
|
||||
if (m_context->state < ICOLoadingContext::State::BitmapDecoded) {
|
||||
// NOTE: This forces the chunk decoding to happen.
|
||||
auto maybe_error = load_ico_bitmap(*m_context, {});
|
||||
if (maybe_error.is_error()) {
|
||||
m_context->state = ICOLoadingContext::State::Error;
|
||||
return Error::from_string_literal("ICOImageDecoderPlugin: Decoding failed");
|
||||
}
|
||||
m_context->state = ICOLoadingContext::State::BitmapDecoded;
|
||||
}
|
||||
|
||||
VERIFY(m_context->images[m_context->largest_index].bitmap);
|
||||
return ImageFrameDescriptor { m_context->images[m_context->largest_index].bitmap, 0 };
|
||||
}
|
||||
|
||||
ErrorOr<Optional<ReadonlyBytes>> ICOImageDecoderPlugin::icc_data()
|
||||
{
|
||||
return OptionalNone {};
|
||||
}
|
||||
|
||||
}
|
||||
39
Userland/Libraries/LibGfx/ImageFormats/ICOLoader.h
Normal file
39
Userland/Libraries/LibGfx/ImageFormats/ICOLoader.h
Normal file
|
|
@ -0,0 +1,39 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Paul Roukema <roukemap@gmail.com>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
struct ICOLoadingContext;
|
||||
|
||||
class ICOImageDecoderPlugin final : public ImageDecoderPlugin {
|
||||
public:
|
||||
static bool sniff(ReadonlyBytes);
|
||||
static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);
|
||||
|
||||
virtual ~ICOImageDecoderPlugin() override;
|
||||
|
||||
virtual IntSize size() override;
|
||||
virtual void set_volatile() override;
|
||||
[[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) override;
|
||||
virtual bool initialize() override;
|
||||
virtual bool is_animated() override;
|
||||
virtual size_t loop_count() override;
|
||||
virtual size_t frame_count() override;
|
||||
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
|
||||
virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
|
||||
|
||||
private:
|
||||
ICOImageDecoderPlugin(u8 const*, size_t);
|
||||
static ErrorOr<void> load_ico_bitmap(ICOLoadingContext& context, Optional<size_t> index);
|
||||
|
||||
OwnPtr<ICOLoadingContext> m_context;
|
||||
};
|
||||
|
||||
}
|
||||
101
Userland/Libraries/LibGfx/ImageFormats/ImageDecoder.cpp
Normal file
101
Userland/Libraries/LibGfx/ImageFormats/ImageDecoder.cpp
Normal file
|
|
@ -0,0 +1,101 @@
|
|||
/*
|
||||
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include <AK/LexicalPath.h>
|
||||
#include <LibGfx/ImageFormats/BMPLoader.h>
|
||||
#include <LibGfx/ImageFormats/DDSLoader.h>
|
||||
#include <LibGfx/ImageFormats/GIFLoader.h>
|
||||
#include <LibGfx/ImageFormats/ICOLoader.h>
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
#include <LibGfx/ImageFormats/JPEGLoader.h>
|
||||
#include <LibGfx/ImageFormats/PBMLoader.h>
|
||||
#include <LibGfx/ImageFormats/PGMLoader.h>
|
||||
#include <LibGfx/ImageFormats/PNGLoader.h>
|
||||
#include <LibGfx/ImageFormats/PPMLoader.h>
|
||||
#include <LibGfx/ImageFormats/QOILoader.h>
|
||||
#include <LibGfx/ImageFormats/TGALoader.h>
|
||||
#include <LibGfx/ImageFormats/WebPLoader.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
struct ImagePluginInitializer {
|
||||
bool (*sniff)(ReadonlyBytes) = nullptr;
|
||||
ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> (*create)(ReadonlyBytes) = nullptr;
|
||||
};
|
||||
|
||||
static constexpr ImagePluginInitializer s_initializers[] = {
|
||||
{ PNGImageDecoderPlugin::sniff, PNGImageDecoderPlugin::create },
|
||||
{ GIFImageDecoderPlugin::sniff, GIFImageDecoderPlugin::create },
|
||||
{ BMPImageDecoderPlugin::sniff, BMPImageDecoderPlugin::create },
|
||||
{ PBMImageDecoderPlugin::sniff, PBMImageDecoderPlugin::create },
|
||||
{ PGMImageDecoderPlugin::sniff, PGMImageDecoderPlugin::create },
|
||||
{ PPMImageDecoderPlugin::sniff, PPMImageDecoderPlugin::create },
|
||||
{ ICOImageDecoderPlugin::sniff, ICOImageDecoderPlugin::create },
|
||||
{ JPEGImageDecoderPlugin::sniff, JPEGImageDecoderPlugin::create },
|
||||
{ DDSImageDecoderPlugin::sniff, DDSImageDecoderPlugin::create },
|
||||
{ QOIImageDecoderPlugin::sniff, QOIImageDecoderPlugin::create },
|
||||
{ WebPImageDecoderPlugin::sniff, WebPImageDecoderPlugin::create },
|
||||
};
|
||||
|
||||
struct ImagePluginWithMIMETypeInitializer {
|
||||
ErrorOr<bool> (*validate_before_create)(ReadonlyBytes) = nullptr;
|
||||
ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> (*create)(ReadonlyBytes) = nullptr;
|
||||
StringView mime_type;
|
||||
};
|
||||
|
||||
static constexpr ImagePluginWithMIMETypeInitializer s_initializers_with_mime_type[] = {
|
||||
{ TGAImageDecoderPlugin::validate_before_create, TGAImageDecoderPlugin::create, "image/x-targa"sv },
|
||||
};
|
||||
|
||||
static OwnPtr<ImageDecoderPlugin> probe_and_sniff_for_appropriate_plugin(ReadonlyBytes bytes)
|
||||
{
|
||||
for (auto& plugin : s_initializers) {
|
||||
auto sniff_result = plugin.sniff(bytes);
|
||||
if (!sniff_result)
|
||||
continue;
|
||||
auto plugin_decoder = plugin.create(bytes).release_value_but_fixme_should_propagate_errors();
|
||||
if (plugin_decoder->initialize())
|
||||
return plugin_decoder;
|
||||
}
|
||||
return {};
|
||||
}
|
||||
|
||||
static OwnPtr<ImageDecoderPlugin> probe_and_sniff_for_appropriate_plugin_with_known_mime_type(StringView mime_type, ReadonlyBytes bytes)
|
||||
{
|
||||
for (auto& plugin : s_initializers_with_mime_type) {
|
||||
if (plugin.mime_type != mime_type)
|
||||
continue;
|
||||
auto validation_result = plugin.validate_before_create(bytes).release_value_but_fixme_should_propagate_errors();
|
||||
if (!validation_result)
|
||||
continue;
|
||||
auto plugin_decoder = plugin.create(bytes).release_value_but_fixme_should_propagate_errors();
|
||||
if (plugin_decoder->initialize())
|
||||
return plugin_decoder;
|
||||
}
|
||||
return {};
|
||||
}
|
||||
|
||||
RefPtr<ImageDecoder> ImageDecoder::try_create_for_raw_bytes(ReadonlyBytes bytes, Optional<DeprecatedString> mime_type)
|
||||
{
|
||||
OwnPtr<ImageDecoderPlugin> plugin = probe_and_sniff_for_appropriate_plugin(bytes);
|
||||
if (!plugin) {
|
||||
if (mime_type.has_value()) {
|
||||
plugin = probe_and_sniff_for_appropriate_plugin_with_known_mime_type(mime_type.value(), bytes);
|
||||
if (!plugin)
|
||||
return {};
|
||||
} else {
|
||||
return {};
|
||||
}
|
||||
}
|
||||
return adopt_ref_if_nonnull(new (nothrow) ImageDecoder(plugin.release_nonnull()));
|
||||
}
|
||||
|
||||
ImageDecoder::ImageDecoder(NonnullOwnPtr<ImageDecoderPlugin> plugin)
|
||||
: m_plugin(move(plugin))
|
||||
{
|
||||
}
|
||||
|
||||
}
|
||||
71
Userland/Libraries/LibGfx/ImageFormats/ImageDecoder.h
Normal file
71
Userland/Libraries/LibGfx/ImageFormats/ImageDecoder.h
Normal file
|
|
@ -0,0 +1,71 @@
|
|||
/*
|
||||
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/ByteBuffer.h>
|
||||
#include <AK/OwnPtr.h>
|
||||
#include <AK/RefCounted.h>
|
||||
#include <AK/RefPtr.h>
|
||||
#include <LibGfx/Bitmap.h>
|
||||
#include <LibGfx/Size.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
class Bitmap;
|
||||
|
||||
static constexpr size_t maximum_width_for_decoded_images = 16384;
|
||||
static constexpr size_t maximum_height_for_decoded_images = 16384;
|
||||
|
||||
struct ImageFrameDescriptor {
|
||||
RefPtr<Bitmap> image;
|
||||
int duration { 0 };
|
||||
};
|
||||
|
||||
class ImageDecoderPlugin {
|
||||
public:
|
||||
virtual ~ImageDecoderPlugin() = default;
|
||||
|
||||
virtual IntSize size() = 0;
|
||||
|
||||
virtual void set_volatile() = 0;
|
||||
[[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) = 0;
|
||||
|
||||
virtual bool initialize() = 0;
|
||||
|
||||
virtual bool is_animated() = 0;
|
||||
virtual size_t loop_count() = 0;
|
||||
virtual size_t frame_count() = 0;
|
||||
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) = 0;
|
||||
virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() = 0;
|
||||
|
||||
protected:
|
||||
ImageDecoderPlugin() = default;
|
||||
};
|
||||
|
||||
class ImageDecoder : public RefCounted<ImageDecoder> {
|
||||
public:
|
||||
static RefPtr<ImageDecoder> try_create_for_raw_bytes(ReadonlyBytes, Optional<DeprecatedString> mime_type = {});
|
||||
~ImageDecoder() = default;
|
||||
|
||||
IntSize size() const { return m_plugin->size(); }
|
||||
int width() const { return size().width(); }
|
||||
int height() const { return size().height(); }
|
||||
void set_volatile() { m_plugin->set_volatile(); }
|
||||
[[nodiscard]] bool set_nonvolatile(bool& was_purged) { return m_plugin->set_nonvolatile(was_purged); }
|
||||
bool is_animated() const { return m_plugin->is_animated(); }
|
||||
size_t loop_count() const { return m_plugin->loop_count(); }
|
||||
size_t frame_count() const { return m_plugin->frame_count(); }
|
||||
ErrorOr<ImageFrameDescriptor> frame(size_t index) const { return m_plugin->frame(index); }
|
||||
ErrorOr<Optional<ReadonlyBytes>> icc_data() const { return m_plugin->icc_data(); }
|
||||
|
||||
private:
|
||||
explicit ImageDecoder(NonnullOwnPtr<ImageDecoderPlugin>);
|
||||
|
||||
NonnullOwnPtr<ImageDecoderPlugin> mutable m_plugin;
|
||||
};
|
||||
|
||||
}
|
||||
1625
Userland/Libraries/LibGfx/ImageFormats/JPEGLoader.cpp
Normal file
1625
Userland/Libraries/LibGfx/ImageFormats/JPEGLoader.cpp
Normal file
File diff suppressed because it is too large
Load diff
40
Userland/Libraries/LibGfx/ImageFormats/JPEGLoader.h
Normal file
40
Userland/Libraries/LibGfx/ImageFormats/JPEGLoader.h
Normal file
|
|
@ -0,0 +1,40 @@
|
|||
/*
|
||||
* Copyright (c) 2020, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/MemoryStream.h>
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
struct JPEGLoadingContext;
|
||||
|
||||
// For the specification, see: https://www.w3.org/Graphics/JPEG/itu-t81.pdf
|
||||
|
||||
class JPEGImageDecoderPlugin : public ImageDecoderPlugin {
|
||||
public:
|
||||
static bool sniff(ReadonlyBytes);
|
||||
static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);
|
||||
|
||||
virtual ~JPEGImageDecoderPlugin() override;
|
||||
virtual IntSize size() override;
|
||||
virtual void set_volatile() override;
|
||||
[[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) override;
|
||||
virtual bool initialize() override;
|
||||
virtual bool is_animated() override;
|
||||
virtual size_t loop_count() override;
|
||||
virtual size_t frame_count() override;
|
||||
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
|
||||
virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
|
||||
|
||||
private:
|
||||
JPEGImageDecoderPlugin(NonnullOwnPtr<FixedMemoryStream>);
|
||||
|
||||
OwnPtr<JPEGLoadingContext> m_context;
|
||||
};
|
||||
|
||||
}
|
||||
67
Userland/Libraries/LibGfx/ImageFormats/PBMLoader.cpp
Normal file
67
Userland/Libraries/LibGfx/ImageFormats/PBMLoader.cpp
Normal file
|
|
@ -0,0 +1,67 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
|
||||
* Copyright (c) 2022, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include "PBMLoader.h"
|
||||
#include "AK/Endian.h"
|
||||
#include "PortableImageLoaderCommon.h"
|
||||
#include "Userland/Libraries/LibGfx/Streamer.h"
|
||||
#include <string.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
bool read_image_data(PBMLoadingContext& context, Streamer& streamer)
|
||||
{
|
||||
u8 byte;
|
||||
Vector<Gfx::Color> color_data;
|
||||
|
||||
if (context.type == PBMLoadingContext::Type::ASCII) {
|
||||
while (streamer.read(byte)) {
|
||||
if (byte == '0') {
|
||||
color_data.append(Color::White);
|
||||
} else if (byte == '1') {
|
||||
color_data.append(Color::Black);
|
||||
}
|
||||
}
|
||||
} else if (context.type == PBMLoadingContext::Type::RAWBITS) {
|
||||
size_t color_index = 0;
|
||||
|
||||
while (streamer.read(byte)) {
|
||||
for (int i = 0; i < 8; i++) {
|
||||
int val = byte & 0x80;
|
||||
|
||||
if (val == 0) {
|
||||
color_data.append(Color::White);
|
||||
} else {
|
||||
color_data.append(Color::Black);
|
||||
}
|
||||
|
||||
byte = byte << 1;
|
||||
color_index++;
|
||||
|
||||
if (color_index % context.width == 0) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
size_t context_size = (u32)context.width * (u32)context.height;
|
||||
if (context_size != color_data.size()) {
|
||||
dbgln("Not enough color data in image.");
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!create_bitmap(context)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
set_pixels(context, color_data);
|
||||
|
||||
context.state = PBMLoadingContext::State::Bitmap;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
26
Userland/Libraries/LibGfx/ImageFormats/PBMLoader.h
Normal file
26
Userland/Libraries/LibGfx/ImageFormats/PBMLoader.h
Normal file
|
|
@ -0,0 +1,26 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
|
||||
* Copyright (c) 2022, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/StringView.h>
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
#include <LibGfx/ImageFormats/PortableImageMapLoader.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
struct PBM {
|
||||
static constexpr auto ascii_magic_number = '1';
|
||||
static constexpr auto binary_magic_number = '4';
|
||||
static constexpr StringView image_type = "PBM"sv;
|
||||
};
|
||||
|
||||
using PBMLoadingContext = PortableImageMapLoadingContext<PBM>;
|
||||
using PBMImageDecoderPlugin = PortableImageDecoderPlugin<PBMLoadingContext>;
|
||||
|
||||
bool read_image_data(PBMLoadingContext& context, Streamer& streamer);
|
||||
}
|
||||
68
Userland/Libraries/LibGfx/ImageFormats/PGMLoader.cpp
Normal file
68
Userland/Libraries/LibGfx/ImageFormats/PGMLoader.cpp
Normal file
|
|
@ -0,0 +1,68 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
|
||||
* Copyright (c) 2022, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include <AK/Endian.h>
|
||||
#include <LibGfx/ImageFormats/PGMLoader.h>
|
||||
#include <LibGfx/ImageFormats/PortableImageLoaderCommon.h>
|
||||
#include <LibGfx/Streamer.h>
|
||||
#include <string.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
static void set_adjusted_pixels(PGMLoadingContext& context, Vector<Gfx::Color> const& color_data)
|
||||
{
|
||||
size_t index = 0;
|
||||
for (size_t y = 0; y < context.height; ++y) {
|
||||
for (size_t x = 0; x < context.width; ++x) {
|
||||
Color color = color_data.at(index);
|
||||
if (context.format_details.max_val < 255) {
|
||||
color = adjust_color(context.format_details.max_val, color);
|
||||
}
|
||||
context.bitmap->set_pixel(x, y, color);
|
||||
++index;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
bool read_image_data(PGMLoadingContext& context, Streamer& streamer)
|
||||
{
|
||||
Vector<Gfx::Color> color_data;
|
||||
|
||||
if (context.type == PGMLoadingContext::Type::ASCII) {
|
||||
u16 value;
|
||||
|
||||
while (true) {
|
||||
if (!read_number(streamer, &value))
|
||||
break;
|
||||
|
||||
if (!read_whitespace(context, streamer))
|
||||
break;
|
||||
|
||||
color_data.append({ (u8)value, (u8)value, (u8)value });
|
||||
}
|
||||
} else if (context.type == PGMLoadingContext::Type::RAWBITS) {
|
||||
u8 pixel;
|
||||
while (streamer.read(pixel)) {
|
||||
color_data.append({ pixel, pixel, pixel });
|
||||
}
|
||||
}
|
||||
|
||||
size_t context_size = (u32)context.width * (u32)context.height;
|
||||
if (context_size != color_data.size()) {
|
||||
dbgln("Not enough color data in image.");
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!create_bitmap(context))
|
||||
return false;
|
||||
|
||||
set_adjusted_pixels(context, color_data);
|
||||
|
||||
context.state = PGMLoadingContext::State::Bitmap;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
27
Userland/Libraries/LibGfx/ImageFormats/PGMLoader.h
Normal file
27
Userland/Libraries/LibGfx/ImageFormats/PGMLoader.h
Normal file
|
|
@ -0,0 +1,27 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
|
||||
* Copyright (c) 2022, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/StringView.h>
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
#include <LibGfx/ImageFormats/PortableImageMapLoader.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
struct PGM {
|
||||
static constexpr auto ascii_magic_number = '2';
|
||||
static constexpr auto binary_magic_number = '5';
|
||||
static constexpr StringView image_type = "PGM"sv;
|
||||
u16 max_val { 0 };
|
||||
};
|
||||
|
||||
using PGMLoadingContext = PortableImageMapLoadingContext<PGM>;
|
||||
using PGMImageDecoderPlugin = PortableImageDecoderPlugin<PGMLoadingContext>;
|
||||
|
||||
bool read_image_data(PGMLoadingContext& context, Streamer& streamer);
|
||||
}
|
||||
1111
Userland/Libraries/LibGfx/ImageFormats/PNGLoader.cpp
Normal file
1111
Userland/Libraries/LibGfx/ImageFormats/PNGLoader.cpp
Normal file
File diff suppressed because it is too large
Load diff
38
Userland/Libraries/LibGfx/ImageFormats/PNGLoader.h
Normal file
38
Userland/Libraries/LibGfx/ImageFormats/PNGLoader.h
Normal file
|
|
@ -0,0 +1,38 @@
|
|||
/*
|
||||
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
struct PNGLoadingContext;
|
||||
|
||||
class PNGImageDecoderPlugin final : public ImageDecoderPlugin {
|
||||
public:
|
||||
static bool sniff(ReadonlyBytes);
|
||||
static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);
|
||||
|
||||
virtual ~PNGImageDecoderPlugin() override;
|
||||
|
||||
virtual IntSize size() override;
|
||||
virtual void set_volatile() override;
|
||||
[[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) override;
|
||||
virtual bool initialize() override;
|
||||
virtual bool is_animated() override;
|
||||
virtual size_t loop_count() override;
|
||||
virtual size_t frame_count() override;
|
||||
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
|
||||
virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
|
||||
|
||||
private:
|
||||
PNGImageDecoderPlugin(u8 const*, size_t);
|
||||
|
||||
OwnPtr<PNGLoadingContext> m_context;
|
||||
};
|
||||
|
||||
}
|
||||
59
Userland/Libraries/LibGfx/ImageFormats/PNGShared.h
Normal file
59
Userland/Libraries/LibGfx/ImageFormats/PNGShared.h
Normal file
|
|
@ -0,0 +1,59 @@
|
|||
/*
|
||||
* Copyright (c) 2022, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/Array.h>
|
||||
#include <AK/SIMD.h>
|
||||
|
||||
namespace Gfx::PNG {
|
||||
|
||||
// https://www.w3.org/TR/PNG/#5PNG-file-signature
|
||||
static constexpr Array<u8, 8> header = { 0x89, 'P', 'N', 'G', 13, 10, 26, 10 };
|
||||
|
||||
// https://www.w3.org/TR/PNG/#6Colour-values
|
||||
enum class ColorType : u8 {
|
||||
Greyscale = 0,
|
||||
Truecolor = 2, // RGB
|
||||
IndexedColor = 3,
|
||||
GreyscaleWithAlpha = 4,
|
||||
TruecolorWithAlpha = 6,
|
||||
};
|
||||
|
||||
// https://www.w3.org/TR/PNG/#9Filter-types
|
||||
enum class FilterType : u8 {
|
||||
None,
|
||||
Sub,
|
||||
Up,
|
||||
Average,
|
||||
Paeth,
|
||||
};
|
||||
|
||||
// https://www.w3.org/TR/PNG/#9Filter-type-4-Paeth
|
||||
ALWAYS_INLINE u8 paeth_predictor(u8 a, u8 b, u8 c)
|
||||
{
|
||||
int p = a + b - c;
|
||||
int pa = AK::abs(p - a);
|
||||
int pb = AK::abs(p - b);
|
||||
int pc = AK::abs(p - c);
|
||||
if (pa <= pb && pa <= pc)
|
||||
return a;
|
||||
if (pb <= pc)
|
||||
return b;
|
||||
return c;
|
||||
}
|
||||
|
||||
ALWAYS_INLINE AK::SIMD::u8x4 paeth_predictor(AK::SIMD::u8x4 a, AK::SIMD::u8x4 b, AK::SIMD::u8x4 c)
|
||||
{
|
||||
return AK::SIMD::u8x4 {
|
||||
paeth_predictor(a[0], b[0], c[0]),
|
||||
paeth_predictor(a[1], b[1], c[1]),
|
||||
paeth_predictor(a[2], b[2], c[2]),
|
||||
paeth_predictor(a[3], b[3], c[3]),
|
||||
};
|
||||
}
|
||||
|
||||
};
|
||||
284
Userland/Libraries/LibGfx/ImageFormats/PNGWriter.cpp
Normal file
284
Userland/Libraries/LibGfx/ImageFormats/PNGWriter.cpp
Normal file
|
|
@ -0,0 +1,284 @@
|
|||
/*
|
||||
* Copyright (c) 2021, Pierre Hoffmeister
|
||||
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
|
||||
* Copyright (c) 2021, Aziz Berkay Yesilyurt <abyesilyurt@gmail.com>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include <AK/Concepts.h>
|
||||
#include <AK/FixedArray.h>
|
||||
#include <AK/SIMDExtras.h>
|
||||
#include <AK/String.h>
|
||||
#include <LibCompress/Zlib.h>
|
||||
#include <LibCrypto/Checksum/CRC32.h>
|
||||
#include <LibGfx/Bitmap.h>
|
||||
#include <LibGfx/ImageFormats/PNGWriter.h>
|
||||
|
||||
#pragma GCC diagnostic ignored "-Wpsabi"
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
class PNGChunk {
|
||||
using data_length_type = u32;
|
||||
|
||||
public:
|
||||
explicit PNGChunk(String);
|
||||
auto const& data() const { return m_data; };
|
||||
String const& type() const { return m_type; };
|
||||
ErrorOr<void> reserve(size_t bytes) { return m_data.try_ensure_capacity(bytes); }
|
||||
|
||||
template<typename T>
|
||||
ErrorOr<void> add_as_big_endian(T);
|
||||
|
||||
ErrorOr<void> add_u8(u8);
|
||||
|
||||
ErrorOr<void> compress_and_add(ReadonlyBytes);
|
||||
ErrorOr<void> add(ReadonlyBytes);
|
||||
|
||||
ErrorOr<void> store_type();
|
||||
void store_data_length();
|
||||
u32 crc();
|
||||
|
||||
private:
|
||||
ByteBuffer m_data;
|
||||
String m_type;
|
||||
};
|
||||
|
||||
PNGChunk::PNGChunk(String type)
|
||||
: m_type(move(type))
|
||||
{
|
||||
VERIFY(m_type.bytes().size() == 4);
|
||||
|
||||
// NOTE: These are MUST() because they should always be able to fit in m_data's inline capacity.
|
||||
MUST(add_as_big_endian<data_length_type>(0));
|
||||
MUST(store_type());
|
||||
}
|
||||
|
||||
ErrorOr<void> PNGChunk::store_type()
|
||||
{
|
||||
TRY(add(type().bytes()));
|
||||
return {};
|
||||
}
|
||||
|
||||
void PNGChunk::store_data_length()
|
||||
{
|
||||
auto data_length = BigEndian<u32>(m_data.size() - sizeof(data_length_type) - m_type.bytes().size());
|
||||
__builtin_memcpy(m_data.offset_pointer(0), &data_length, sizeof(u32));
|
||||
}
|
||||
|
||||
u32 PNGChunk::crc()
|
||||
{
|
||||
u32 crc = Crypto::Checksum::CRC32({ m_data.offset_pointer(sizeof(data_length_type)), m_data.size() - sizeof(data_length_type) }).digest();
|
||||
return crc;
|
||||
}
|
||||
|
||||
ErrorOr<void> PNGChunk::compress_and_add(ReadonlyBytes uncompressed_bytes)
|
||||
{
|
||||
return add(TRY(Compress::ZlibCompressor::compress_all(uncompressed_bytes, Compress::ZlibCompressionLevel::Best)));
|
||||
}
|
||||
|
||||
ErrorOr<void> PNGChunk::add(ReadonlyBytes bytes)
|
||||
{
|
||||
TRY(m_data.try_append(bytes));
|
||||
return {};
|
||||
}
|
||||
|
||||
template<typename T>
|
||||
ErrorOr<void> PNGChunk::add_as_big_endian(T data)
|
||||
{
|
||||
auto data_out = AK::convert_between_host_and_big_endian(data);
|
||||
TRY(m_data.try_append(&data_out, sizeof(T)));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> PNGChunk::add_u8(u8 data)
|
||||
{
|
||||
TRY(m_data.try_append(data));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> PNGWriter::add_chunk(PNGChunk& png_chunk)
|
||||
{
|
||||
png_chunk.store_data_length();
|
||||
u32 crc = png_chunk.crc();
|
||||
TRY(png_chunk.add_as_big_endian(crc));
|
||||
TRY(m_data.try_append(png_chunk.data().data(), png_chunk.data().size()));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> PNGWriter::add_png_header()
|
||||
{
|
||||
TRY(m_data.try_append(PNG::header.data(), PNG::header.size()));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> PNGWriter::add_IHDR_chunk(u32 width, u32 height, u8 bit_depth, PNG::ColorType color_type, u8 compression_method, u8 filter_method, u8 interlace_method)
|
||||
{
|
||||
PNGChunk png_chunk { "IHDR"_short_string };
|
||||
TRY(png_chunk.add_as_big_endian(width));
|
||||
TRY(png_chunk.add_as_big_endian(height));
|
||||
TRY(png_chunk.add_u8(bit_depth));
|
||||
TRY(png_chunk.add_u8(to_underlying(color_type)));
|
||||
TRY(png_chunk.add_u8(compression_method));
|
||||
TRY(png_chunk.add_u8(filter_method));
|
||||
TRY(png_chunk.add_u8(interlace_method));
|
||||
TRY(add_chunk(png_chunk));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> PNGWriter::add_iCCP_chunk(ReadonlyBytes icc_data)
|
||||
{
|
||||
// https://www.w3.org/TR/png/#11iCCP
|
||||
PNGChunk chunk { "iCCP"_short_string };
|
||||
|
||||
TRY(chunk.add("embedded profile"sv.bytes()));
|
||||
TRY(chunk.add_u8(0)); // \0-terminate profile name
|
||||
|
||||
TRY(chunk.add_u8(0)); // compression method deflate
|
||||
TRY(chunk.compress_and_add(icc_data));
|
||||
|
||||
TRY(add_chunk(chunk));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> PNGWriter::add_IEND_chunk()
|
||||
{
|
||||
PNGChunk png_chunk { "IEND"_short_string };
|
||||
TRY(add_chunk(png_chunk));
|
||||
return {};
|
||||
}
|
||||
|
||||
union [[gnu::packed]] Pixel {
|
||||
ARGB32 rgba { 0 };
|
||||
struct {
|
||||
u8 red;
|
||||
u8 green;
|
||||
u8 blue;
|
||||
u8 alpha;
|
||||
};
|
||||
AK::SIMD::u8x4 simd;
|
||||
|
||||
ALWAYS_INLINE static AK::SIMD::u8x4 gfx_to_png(Pixel pixel)
|
||||
{
|
||||
swap(pixel.red, pixel.blue);
|
||||
return pixel.simd;
|
||||
}
|
||||
};
|
||||
static_assert(AssertSize<Pixel, 4>());
|
||||
|
||||
ErrorOr<void> PNGWriter::add_IDAT_chunk(Gfx::Bitmap const& bitmap)
|
||||
{
|
||||
PNGChunk png_chunk { "IDAT"_short_string };
|
||||
TRY(png_chunk.reserve(bitmap.size_in_bytes()));
|
||||
|
||||
ByteBuffer uncompressed_block_data;
|
||||
TRY(uncompressed_block_data.try_ensure_capacity(bitmap.size_in_bytes() + bitmap.height()));
|
||||
|
||||
auto dummy_scanline = TRY(FixedArray<Pixel>::create(bitmap.width()));
|
||||
auto const* scanline_minus_1 = dummy_scanline.data();
|
||||
|
||||
for (int y = 0; y < bitmap.height(); ++y) {
|
||||
auto* scanline = reinterpret_cast<Pixel const*>(bitmap.scanline(y));
|
||||
|
||||
struct Filter {
|
||||
PNG::FilterType type;
|
||||
ByteBuffer buffer {};
|
||||
int sum = 0;
|
||||
|
||||
ErrorOr<void> append(u8 byte)
|
||||
{
|
||||
TRY(buffer.try_append(byte));
|
||||
sum += static_cast<i8>(byte);
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> append(AK::SIMD::u8x4 simd)
|
||||
{
|
||||
TRY(append(simd[0]));
|
||||
TRY(append(simd[1]));
|
||||
TRY(append(simd[2]));
|
||||
TRY(append(simd[3]));
|
||||
return {};
|
||||
}
|
||||
};
|
||||
|
||||
Filter none_filter { .type = PNG::FilterType::None };
|
||||
TRY(none_filter.buffer.try_ensure_capacity(sizeof(Pixel) * bitmap.height()));
|
||||
|
||||
Filter sub_filter { .type = PNG::FilterType::Sub };
|
||||
TRY(sub_filter.buffer.try_ensure_capacity(sizeof(Pixel) * bitmap.height()));
|
||||
|
||||
Filter up_filter { .type = PNG::FilterType::Up };
|
||||
TRY(up_filter.buffer.try_ensure_capacity(sizeof(Pixel) * bitmap.height()));
|
||||
|
||||
Filter average_filter { .type = PNG::FilterType::Average };
|
||||
TRY(average_filter.buffer.try_ensure_capacity(sizeof(ARGB32) * bitmap.height()));
|
||||
|
||||
Filter paeth_filter { .type = PNG::FilterType::Paeth };
|
||||
TRY(paeth_filter.buffer.try_ensure_capacity(sizeof(ARGB32) * bitmap.height()));
|
||||
|
||||
auto pixel_x_minus_1 = Pixel::gfx_to_png(dummy_scanline[0]);
|
||||
auto pixel_xy_minus_1 = Pixel::gfx_to_png(dummy_scanline[0]);
|
||||
|
||||
for (int x = 0; x < bitmap.width(); ++x) {
|
||||
auto pixel = Pixel::gfx_to_png(scanline[x]);
|
||||
auto pixel_y_minus_1 = Pixel::gfx_to_png(scanline_minus_1[x]);
|
||||
|
||||
TRY(none_filter.append(pixel));
|
||||
|
||||
TRY(sub_filter.append(pixel - pixel_x_minus_1));
|
||||
|
||||
TRY(up_filter.append(pixel - pixel_y_minus_1));
|
||||
|
||||
// The sum Orig(a) + Orig(b) shall be performed without overflow (using at least nine-bit arithmetic).
|
||||
auto sum = AK::SIMD::to_u16x4(pixel_x_minus_1) + AK::SIMD::to_u16x4(pixel_y_minus_1);
|
||||
auto average = AK::SIMD::to_u8x4(sum / 2);
|
||||
TRY(average_filter.append(pixel - average));
|
||||
|
||||
TRY(paeth_filter.append(pixel - PNG::paeth_predictor(pixel_x_minus_1, pixel_y_minus_1, pixel_xy_minus_1)));
|
||||
|
||||
pixel_x_minus_1 = pixel;
|
||||
pixel_xy_minus_1 = pixel_y_minus_1;
|
||||
}
|
||||
|
||||
scanline_minus_1 = scanline;
|
||||
|
||||
// 12.8 Filter selection: https://www.w3.org/TR/PNG/#12Filter-selection
|
||||
// For best compression of truecolour and greyscale images, the recommended approach
|
||||
// is adaptive filtering in which a filter is chosen for each scanline.
|
||||
// The following simple heuristic has performed well in early tests:
|
||||
// compute the output scanline using all five filters, and select the filter that gives the smallest sum of absolute values of outputs.
|
||||
// (Consider the output bytes as signed differences for this test.)
|
||||
Filter& best_filter = none_filter;
|
||||
if (abs(best_filter.sum) > abs(sub_filter.sum))
|
||||
best_filter = sub_filter;
|
||||
if (abs(best_filter.sum) > abs(up_filter.sum))
|
||||
best_filter = up_filter;
|
||||
if (abs(best_filter.sum) > abs(average_filter.sum))
|
||||
best_filter = average_filter;
|
||||
if (abs(best_filter.sum) > abs(paeth_filter.sum))
|
||||
best_filter = paeth_filter;
|
||||
|
||||
TRY(uncompressed_block_data.try_append(to_underlying(best_filter.type)));
|
||||
TRY(uncompressed_block_data.try_append(best_filter.buffer));
|
||||
}
|
||||
|
||||
TRY(png_chunk.compress_and_add(uncompressed_block_data));
|
||||
TRY(add_chunk(png_chunk));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<ByteBuffer> PNGWriter::encode(Gfx::Bitmap const& bitmap, Options options)
|
||||
{
|
||||
PNGWriter writer;
|
||||
TRY(writer.add_png_header());
|
||||
TRY(writer.add_IHDR_chunk(bitmap.width(), bitmap.height(), 8, PNG::ColorType::TruecolorWithAlpha, 0, 0, 0));
|
||||
if (options.icc_data.has_value())
|
||||
TRY(writer.add_iCCP_chunk(options.icc_data.value()));
|
||||
TRY(writer.add_IDAT_chunk(bitmap));
|
||||
TRY(writer.add_IEND_chunk());
|
||||
return ByteBuffer::copy(writer.m_data);
|
||||
}
|
||||
|
||||
}
|
||||
44
Userland/Libraries/LibGfx/ImageFormats/PNGWriter.h
Normal file
44
Userland/Libraries/LibGfx/ImageFormats/PNGWriter.h
Normal file
|
|
@ -0,0 +1,44 @@
|
|||
/*
|
||||
* Copyright (c) 2021, Pierre Hoffmeister
|
||||
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/Optional.h>
|
||||
#include <AK/Vector.h>
|
||||
#include <LibGfx/Forward.h>
|
||||
#include <LibGfx/ImageFormats/PNGShared.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
class PNGChunk;
|
||||
|
||||
// This is not a nested struct to work around https://llvm.org/PR36684
|
||||
struct PNGWriterOptions {
|
||||
// Data for the iCCP chunk.
|
||||
// FIXME: Allow writing cICP, sRGB, or gAMA instead too.
|
||||
Optional<ReadonlyBytes> icc_data;
|
||||
};
|
||||
|
||||
class PNGWriter {
|
||||
public:
|
||||
using Options = PNGWriterOptions;
|
||||
|
||||
static ErrorOr<ByteBuffer> encode(Gfx::Bitmap const&, Options options = Options {});
|
||||
|
||||
private:
|
||||
PNGWriter() = default;
|
||||
|
||||
Vector<u8> m_data;
|
||||
ErrorOr<void> add_chunk(PNGChunk&);
|
||||
ErrorOr<void> add_png_header();
|
||||
ErrorOr<void> add_IHDR_chunk(u32 width, u32 height, u8 bit_depth, PNG::ColorType color_type, u8 compression_method, u8 filter_method, u8 interlace_method);
|
||||
ErrorOr<void> add_iCCP_chunk(ReadonlyBytes icc_data);
|
||||
ErrorOr<void> add_IDAT_chunk(Gfx::Bitmap const&);
|
||||
ErrorOr<void> add_IEND_chunk();
|
||||
};
|
||||
|
||||
}
|
||||
72
Userland/Libraries/LibGfx/ImageFormats/PPMLoader.cpp
Normal file
72
Userland/Libraries/LibGfx/ImageFormats/PPMLoader.cpp
Normal file
|
|
@ -0,0 +1,72 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
|
||||
* Copyright (c) 2022, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include "PPMLoader.h"
|
||||
#include "PortableImageLoaderCommon.h"
|
||||
#include <AK/Endian.h>
|
||||
#include <AK/LexicalPath.h>
|
||||
#include <AK/ScopeGuard.h>
|
||||
#include <AK/StringBuilder.h>
|
||||
#include <LibGfx/Streamer.h>
|
||||
#include <string.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
bool read_image_data(PPMLoadingContext& context, Streamer& streamer)
|
||||
{
|
||||
Vector<Gfx::Color> color_data;
|
||||
color_data.ensure_capacity(context.width * context.height);
|
||||
|
||||
if (context.type == PPMLoadingContext::Type::ASCII) {
|
||||
u16 red;
|
||||
u16 green;
|
||||
u16 blue;
|
||||
|
||||
while (true) {
|
||||
if (!read_number(streamer, &red))
|
||||
break;
|
||||
|
||||
if (!read_whitespace(context, streamer))
|
||||
break;
|
||||
|
||||
if (!read_number(streamer, &green))
|
||||
break;
|
||||
|
||||
if (!read_whitespace(context, streamer))
|
||||
break;
|
||||
|
||||
if (!read_number(streamer, &blue))
|
||||
break;
|
||||
|
||||
if (!read_whitespace(context, streamer))
|
||||
break;
|
||||
|
||||
Color color { (u8)red, (u8)green, (u8)blue };
|
||||
if (context.format_details.max_val < 255)
|
||||
color = adjust_color(context.format_details.max_val, color);
|
||||
color_data.append(color);
|
||||
}
|
||||
} else if (context.type == PPMLoadingContext::Type::RAWBITS) {
|
||||
u8 pixel[3];
|
||||
while (streamer.read_bytes(pixel, 3)) {
|
||||
color_data.append({ pixel[0], pixel[1], pixel[2] });
|
||||
}
|
||||
}
|
||||
|
||||
if (context.width * context.height != color_data.size())
|
||||
return false;
|
||||
|
||||
if (!create_bitmap(context)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
set_pixels(context, color_data);
|
||||
|
||||
context.state = PPMLoadingContext::State::Bitmap;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
27
Userland/Libraries/LibGfx/ImageFormats/PPMLoader.h
Normal file
27
Userland/Libraries/LibGfx/ImageFormats/PPMLoader.h
Normal file
|
|
@ -0,0 +1,27 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
|
||||
* Copyright (c) 2022, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/StringView.h>
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
#include <LibGfx/ImageFormats/PortableImageMapLoader.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
struct PPM {
|
||||
static constexpr auto ascii_magic_number = '3';
|
||||
static constexpr auto binary_magic_number = '6';
|
||||
static constexpr StringView image_type = "PPM"sv;
|
||||
u16 max_val { 0 };
|
||||
};
|
||||
|
||||
using PPMLoadingContext = PortableImageMapLoadingContext<PPM>;
|
||||
using PPMImageDecoderPlugin = PortableImageDecoderPlugin<PPMLoadingContext>;
|
||||
|
||||
bool read_image_data(PPMLoadingContext& context, Streamer& streamer);
|
||||
}
|
||||
|
|
@ -0,0 +1,54 @@
|
|||
/*
|
||||
* Copyright (c) 2023, Lucas Chollet <lucas.chollet@serenityos.org >
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include "PortableFormatWriter.h"
|
||||
#include <AK/String.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
ErrorOr<ByteBuffer> PortableFormatWriter::encode(Bitmap const& bitmap, Options options)
|
||||
{
|
||||
ByteBuffer buffer;
|
||||
|
||||
// FIXME: Add support for PBM and PGM
|
||||
|
||||
TRY(add_header(buffer, options, bitmap.width(), bitmap.height(), 255));
|
||||
TRY(add_pixels(buffer, options, bitmap));
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
ErrorOr<void> PortableFormatWriter::add_header(ByteBuffer& buffer, Options const& options, u32 width, u32 height, u32 maximal_value)
|
||||
{
|
||||
TRY(buffer.try_append(TRY(String::formatted("P{}\n", options.format == Options::Format::ASCII ? "3"sv : "6"sv)).bytes()));
|
||||
TRY(buffer.try_append(TRY(String::formatted("# {}\n", options.comment)).bytes()));
|
||||
TRY(buffer.try_append(TRY(String::formatted("{} {}\n", width, height)).bytes()));
|
||||
TRY(buffer.try_append(TRY(String::formatted("{}\n", maximal_value)).bytes()));
|
||||
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> PortableFormatWriter::add_pixels(ByteBuffer& buffer, Options const& options, Bitmap const& bitmap)
|
||||
{
|
||||
for (int i = 0; i < bitmap.height(); ++i) {
|
||||
for (int j = 0; j < bitmap.width(); ++j) {
|
||||
auto color = bitmap.get_pixel(j, i);
|
||||
if (options.format == Options::Format::ASCII) {
|
||||
TRY(buffer.try_append(TRY(String::formatted("{} {} {}\t", color.red(), color.green(), color.blue())).bytes()));
|
||||
} else {
|
||||
TRY(buffer.try_append(color.red()));
|
||||
TRY(buffer.try_append(color.green()));
|
||||
TRY(buffer.try_append(color.blue()));
|
||||
}
|
||||
}
|
||||
if (options.format == Options::Format::ASCII)
|
||||
TRY(buffer.try_append('\n'));
|
||||
}
|
||||
|
||||
return {};
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,38 @@
|
|||
/*
|
||||
* Copyright (c) 2023, Lucas Chollet <lucas.chollet@serenityos.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/ByteBuffer.h>
|
||||
#include <LibGfx/Bitmap.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
// This is not a nested struct to work around https://llvm.org/PR36684
|
||||
struct PortableFormatWriterOptions {
|
||||
enum class Format {
|
||||
ASCII,
|
||||
Raw,
|
||||
};
|
||||
|
||||
Format format = Format::Raw;
|
||||
StringView comment = "Generated with SerenityOS - LibGfx."sv;
|
||||
};
|
||||
|
||||
class PortableFormatWriter {
|
||||
public:
|
||||
using Options = PortableFormatWriterOptions;
|
||||
|
||||
static ErrorOr<ByteBuffer> encode(Bitmap const&, Options options = Options {});
|
||||
|
||||
private:
|
||||
PortableFormatWriter() = delete;
|
||||
|
||||
static ErrorOr<void> add_header(ByteBuffer&, Options const& options, u32 width, u32 height, u32 max_value);
|
||||
static ErrorOr<void> add_pixels(ByteBuffer&, Options const& options, Bitmap const&);
|
||||
};
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,272 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
|
||||
* Copyright (c) 2020-2022, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/Debug.h>
|
||||
#include <AK/DeprecatedString.h>
|
||||
#include <AK/Endian.h>
|
||||
#include <AK/ScopeGuard.h>
|
||||
#include <AK/StringBuilder.h>
|
||||
#include <AK/Types.h>
|
||||
#include <AK/Vector.h>
|
||||
#include <LibGfx/Bitmap.h>
|
||||
#include <LibGfx/Color.h>
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
#include <LibGfx/Streamer.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
static constexpr Color adjust_color(u16 max_val, Color color)
|
||||
{
|
||||
color.set_red((color.red() * 255) / max_val);
|
||||
color.set_green((color.green() * 255) / max_val);
|
||||
color.set_blue((color.blue() * 255) / max_val);
|
||||
|
||||
return color;
|
||||
}
|
||||
|
||||
template<typename TValue>
|
||||
static bool read_number(Streamer& streamer, TValue* value)
|
||||
{
|
||||
u8 byte {};
|
||||
StringBuilder sb {};
|
||||
|
||||
while (streamer.read(byte)) {
|
||||
if (byte == ' ' || byte == '\t' || byte == '\n' || byte == '\r') {
|
||||
streamer.step_back();
|
||||
break;
|
||||
}
|
||||
|
||||
sb.append(byte);
|
||||
}
|
||||
|
||||
auto const opt_value = sb.to_deprecated_string().to_uint();
|
||||
if (!opt_value.has_value()) {
|
||||
*value = 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
*value = static_cast<u16>(opt_value.value());
|
||||
return true;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
static bool read_comment([[maybe_unused]] TContext& context, Streamer& streamer)
|
||||
{
|
||||
bool exist = false;
|
||||
u8 byte {};
|
||||
|
||||
while (streamer.read(byte)) {
|
||||
if (byte == '#') {
|
||||
exist = true;
|
||||
} else if (byte == '\t' || byte == '\n') {
|
||||
return exist;
|
||||
}
|
||||
}
|
||||
|
||||
return exist;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
static bool read_magic_number(TContext& context, Streamer& streamer)
|
||||
{
|
||||
if (context.state >= TContext::State::MagicNumber) {
|
||||
return true;
|
||||
}
|
||||
|
||||
if (!context.data || context.data_size < 2) {
|
||||
context.state = TContext::State::Error;
|
||||
dbgln_if(PORTABLE_IMAGE_LOADER_DEBUG, "There is no enough data for {}", TContext::FormatDetails::image_type);
|
||||
return false;
|
||||
}
|
||||
|
||||
u8 magic_number[2] {};
|
||||
if (!streamer.read_bytes(magic_number, 2)) {
|
||||
context.state = TContext::State::Error;
|
||||
dbgln_if(PORTABLE_IMAGE_LOADER_DEBUG, "We can't read magic number for {}", TContext::FormatDetails::image_type);
|
||||
return false;
|
||||
}
|
||||
|
||||
if (magic_number[0] == 'P' && magic_number[1] == TContext::FormatDetails::ascii_magic_number) {
|
||||
context.type = TContext::Type::ASCII;
|
||||
context.state = TContext::State::MagicNumber;
|
||||
return true;
|
||||
}
|
||||
|
||||
if (magic_number[0] == 'P' && magic_number[1] == TContext::FormatDetails::binary_magic_number) {
|
||||
context.type = TContext::Type::RAWBITS;
|
||||
context.state = TContext::State::MagicNumber;
|
||||
return true;
|
||||
}
|
||||
|
||||
context.state = TContext::State::Error;
|
||||
dbgln_if(PORTABLE_IMAGE_LOADER_DEBUG, "Magic number is not valid for {}{}{}", magic_number[0], magic_number[1], TContext::FormatDetails::image_type);
|
||||
return false;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
static bool read_whitespace(TContext& context, Streamer& streamer)
|
||||
{
|
||||
bool exist = false;
|
||||
u8 byte {};
|
||||
|
||||
while (streamer.read(byte)) {
|
||||
if (byte == ' ' || byte == '\t' || byte == '\n' || byte == '\r') {
|
||||
exist = true;
|
||||
} else if (byte == '#') {
|
||||
streamer.step_back();
|
||||
read_comment(context, streamer);
|
||||
} else {
|
||||
streamer.step_back();
|
||||
return exist;
|
||||
}
|
||||
}
|
||||
|
||||
return exist;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
static bool read_width(TContext& context, Streamer& streamer)
|
||||
{
|
||||
if (bool const result = read_number(streamer, &context.width);
|
||||
!result || context.width == 0) {
|
||||
return false;
|
||||
}
|
||||
|
||||
context.state = TContext::State::Width;
|
||||
return true;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
static bool read_height(TContext& context, Streamer& streamer)
|
||||
{
|
||||
if (bool const result = read_number(streamer, &context.height);
|
||||
!result || context.height == 0) {
|
||||
return false;
|
||||
}
|
||||
|
||||
context.state = TContext::State::Height;
|
||||
return true;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
static bool read_max_val(TContext& context, Streamer& streamer)
|
||||
{
|
||||
if (bool const result = read_number(streamer, &context.format_details.max_val);
|
||||
!result || context.format_details.max_val == 0) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (context.format_details.max_val > 255) {
|
||||
dbgln_if(PORTABLE_IMAGE_LOADER_DEBUG, "We can't parse 2 byte color for {}", TContext::FormatDetails::image_type);
|
||||
context.state = TContext::State::Error;
|
||||
return false;
|
||||
}
|
||||
|
||||
context.state = TContext::State::Maxval;
|
||||
return true;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
static bool create_bitmap(TContext& context)
|
||||
{
|
||||
auto bitmap_or_error = Bitmap::create(BitmapFormat::BGRx8888, { context.width, context.height });
|
||||
if (bitmap_or_error.is_error()) {
|
||||
context.state = TContext::State::Error;
|
||||
return false;
|
||||
}
|
||||
context.bitmap = bitmap_or_error.release_value_but_fixme_should_propagate_errors();
|
||||
return true;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
static void set_pixels(TContext& context, Vector<Gfx::Color> const& color_data)
|
||||
{
|
||||
size_t index = 0;
|
||||
for (size_t y = 0; y < context.height; ++y) {
|
||||
for (size_t x = 0; x < context.width; ++x) {
|
||||
context.bitmap->set_pixel(x, y, color_data.at(index));
|
||||
index++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
static bool decode(TContext& context)
|
||||
{
|
||||
if (context.state >= TContext::State::Decoded)
|
||||
return true;
|
||||
|
||||
auto error_guard = ArmedScopeGuard([&] {
|
||||
context.state = TContext::State::Error;
|
||||
});
|
||||
|
||||
Streamer streamer(context.data, context.data_size);
|
||||
|
||||
if (!read_magic_number(context, streamer))
|
||||
return false;
|
||||
|
||||
if (!read_whitespace(context, streamer))
|
||||
return false;
|
||||
|
||||
if (!read_width(context, streamer))
|
||||
return false;
|
||||
|
||||
if (!read_whitespace(context, streamer))
|
||||
return false;
|
||||
|
||||
if (!read_height(context, streamer))
|
||||
return false;
|
||||
|
||||
if (context.width > maximum_width_for_decoded_images || context.height > maximum_height_for_decoded_images) {
|
||||
dbgln("This portable network image is too large for comfort: {}x{}", context.width, context.height);
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!read_whitespace(context, streamer))
|
||||
return false;
|
||||
|
||||
if constexpr (requires { context.format_details.max_val; }) {
|
||||
if (!read_max_val(context, streamer))
|
||||
return false;
|
||||
|
||||
if (!read_whitespace(context, streamer))
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!read_image_data(context, streamer))
|
||||
return false;
|
||||
|
||||
error_guard.disarm();
|
||||
context.state = TContext::State::Decoded;
|
||||
return true;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
static RefPtr<Gfx::Bitmap> load_impl(u8 const* data, size_t data_size)
|
||||
{
|
||||
TContext context {};
|
||||
context.data = data;
|
||||
context.data_size = data_size;
|
||||
|
||||
if (!decode(context)) {
|
||||
return nullptr;
|
||||
}
|
||||
return context.bitmap;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
static RefPtr<Gfx::Bitmap> load_from_memory(u8 const* data, size_t length, DeprecatedString const& mmap_name)
|
||||
{
|
||||
auto bitmap = load_impl<TContext>(data, length);
|
||||
if (bitmap)
|
||||
bitmap->set_mmap_name(DeprecatedString::formatted("Gfx::Bitmap [{}] - Decoded {}: {}", bitmap->size(), TContext::FormatDetails::image_type, mmap_name));
|
||||
return bitmap;
|
||||
}
|
||||
|
||||
}
|
||||
194
Userland/Libraries/LibGfx/ImageFormats/PortableImageMapLoader.h
Normal file
194
Userland/Libraries/LibGfx/ImageFormats/PortableImageMapLoader.h
Normal file
|
|
@ -0,0 +1,194 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
|
||||
* Copyright (c) 2022, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/RefPtr.h>
|
||||
#include <AK/StringView.h>
|
||||
#include <AK/Types.h>
|
||||
#include <LibGfx/Bitmap.h>
|
||||
#include <LibGfx/ImageFormats/PortableImageLoaderCommon.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
template<class TFormatDetails>
|
||||
struct PortableImageMapLoadingContext {
|
||||
using FormatDetails = TFormatDetails;
|
||||
|
||||
enum class Type {
|
||||
Unknown,
|
||||
ASCII,
|
||||
RAWBITS
|
||||
};
|
||||
|
||||
enum class State {
|
||||
NotDecoded = 0,
|
||||
Error,
|
||||
MagicNumber,
|
||||
Width,
|
||||
Height,
|
||||
Maxval,
|
||||
Bitmap,
|
||||
Decoded
|
||||
};
|
||||
|
||||
Type type { Type::Unknown };
|
||||
State state { State::NotDecoded };
|
||||
u8 const* data { nullptr };
|
||||
size_t data_size { 0 };
|
||||
size_t width { 0 };
|
||||
size_t height { 0 };
|
||||
FormatDetails format_details {};
|
||||
RefPtr<Gfx::Bitmap> bitmap;
|
||||
};
|
||||
|
||||
template<typename TContext>
|
||||
class PortableImageDecoderPlugin final : public ImageDecoderPlugin {
|
||||
public:
|
||||
static bool sniff(ReadonlyBytes);
|
||||
static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);
|
||||
|
||||
PortableImageDecoderPlugin(u8 const*, size_t);
|
||||
virtual ~PortableImageDecoderPlugin() override = default;
|
||||
|
||||
virtual IntSize size() override;
|
||||
|
||||
virtual void set_volatile() override;
|
||||
[[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) override;
|
||||
|
||||
virtual bool initialize() override;
|
||||
virtual bool is_animated() override;
|
||||
virtual size_t loop_count() override;
|
||||
virtual size_t frame_count() override;
|
||||
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
|
||||
virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
|
||||
|
||||
private:
|
||||
OwnPtr<TContext> m_context;
|
||||
};
|
||||
|
||||
template<typename TContext>
|
||||
PortableImageDecoderPlugin<TContext>::PortableImageDecoderPlugin(u8 const* data, size_t size)
|
||||
{
|
||||
m_context = make<TContext>();
|
||||
m_context->data = data;
|
||||
m_context->data_size = size;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
IntSize PortableImageDecoderPlugin<TContext>::size()
|
||||
{
|
||||
if (m_context->state == TContext::State::Error)
|
||||
return {};
|
||||
|
||||
if (m_context->state < TContext::State::Decoded) {
|
||||
bool success = decode(*m_context);
|
||||
if (!success)
|
||||
return {};
|
||||
}
|
||||
|
||||
return { m_context->width, m_context->height };
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
void PortableImageDecoderPlugin<TContext>::set_volatile()
|
||||
{
|
||||
if (m_context->bitmap)
|
||||
m_context->bitmap->set_volatile();
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
bool PortableImageDecoderPlugin<TContext>::set_nonvolatile(bool& was_purged)
|
||||
{
|
||||
if (!m_context->bitmap)
|
||||
return false;
|
||||
|
||||
return m_context->bitmap->set_nonvolatile(was_purged);
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
bool PortableImageDecoderPlugin<TContext>::initialize()
|
||||
{
|
||||
using Context = TContext;
|
||||
if (m_context->data_size < 2)
|
||||
return false;
|
||||
|
||||
if (m_context->data[0] == 'P' && m_context->data[1] == Context::FormatDetails::ascii_magic_number)
|
||||
return true;
|
||||
|
||||
if (m_context->data[0] == 'P' && m_context->data[1] == Context::FormatDetails::binary_magic_number)
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> PortableImageDecoderPlugin<TContext>::create(ReadonlyBytes data)
|
||||
{
|
||||
return adopt_nonnull_own_or_enomem(new (nothrow) PortableImageDecoderPlugin<TContext>(data.data(), data.size()));
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
bool PortableImageDecoderPlugin<TContext>::sniff(ReadonlyBytes data)
|
||||
{
|
||||
using Context = TContext;
|
||||
if (data.size() < 2)
|
||||
return false;
|
||||
|
||||
if (data.data()[0] == 'P' && data.data()[1] == Context::FormatDetails::ascii_magic_number)
|
||||
return true;
|
||||
|
||||
if (data.data()[0] == 'P' && data.data()[1] == Context::FormatDetails::binary_magic_number)
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
bool PortableImageDecoderPlugin<TContext>::is_animated()
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
size_t PortableImageDecoderPlugin<TContext>::loop_count()
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
size_t PortableImageDecoderPlugin<TContext>::frame_count()
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
ErrorOr<ImageFrameDescriptor> PortableImageDecoderPlugin<TContext>::frame(size_t index)
|
||||
{
|
||||
if (index > 0)
|
||||
return Error::from_string_literal("PortableImageDecoderPlugin: Invalid frame index");
|
||||
|
||||
if (m_context->state == TContext::State::Error)
|
||||
return Error::from_string_literal("PortableImageDecoderPlugin: Decoding failed");
|
||||
|
||||
if (m_context->state < TContext::State::Decoded) {
|
||||
bool success = decode(*m_context);
|
||||
if (!success)
|
||||
return Error::from_string_literal("PortableImageDecoderPlugin: Decoding failed");
|
||||
}
|
||||
|
||||
VERIFY(m_context->bitmap);
|
||||
return ImageFrameDescriptor { m_context->bitmap, 0 };
|
||||
}
|
||||
|
||||
template<typename TContext>
|
||||
ErrorOr<Optional<ReadonlyBytes>> PortableImageDecoderPlugin<TContext>::icc_data()
|
||||
{
|
||||
return OptionalNone {};
|
||||
}
|
||||
|
||||
}
|
||||
266
Userland/Libraries/LibGfx/ImageFormats/QOILoader.cpp
Normal file
266
Userland/Libraries/LibGfx/ImageFormats/QOILoader.cpp
Normal file
|
|
@ -0,0 +1,266 @@
|
|||
/*
|
||||
* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include <AK/Endian.h>
|
||||
#include <AK/MemoryStream.h>
|
||||
#include <LibGfx/Bitmap.h>
|
||||
#include <LibGfx/ImageFormats/QOILoader.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
static constexpr auto QOI_MAGIC = "qoif"sv;
|
||||
static constexpr u8 QOI_OP_RGB = 0b11111110;
|
||||
static constexpr u8 QOI_OP_RGBA = 0b11111111;
|
||||
static constexpr u8 QOI_OP_INDEX = 0b00000000;
|
||||
static constexpr u8 QOI_OP_DIFF = 0b01000000;
|
||||
static constexpr u8 QOI_OP_LUMA = 0b10000000;
|
||||
static constexpr u8 QOI_OP_RUN = 0b11000000;
|
||||
static constexpr u8 QOI_MASK_2 = 0b11000000;
|
||||
static constexpr u8 END_MARKER[] = { 0, 0, 0, 0, 0, 0, 0, 1 };
|
||||
|
||||
static ErrorOr<QOIHeader> decode_qoi_header(Stream& stream)
|
||||
{
|
||||
auto header = TRY(stream.read_value<QOIHeader>());
|
||||
if (StringView { header.magic, array_size(header.magic) } != QOI_MAGIC)
|
||||
return Error::from_string_literal("Invalid QOI image: incorrect header magic");
|
||||
header.width = AK::convert_between_host_and_big_endian(header.width);
|
||||
header.height = AK::convert_between_host_and_big_endian(header.height);
|
||||
return header;
|
||||
}
|
||||
|
||||
static ErrorOr<Color> decode_qoi_op_rgb(Stream& stream, u8 first_byte, Color pixel)
|
||||
{
|
||||
VERIFY(first_byte == QOI_OP_RGB);
|
||||
u8 bytes[3];
|
||||
TRY(stream.read_until_filled({ &bytes, array_size(bytes) }));
|
||||
|
||||
// The alpha value remains unchanged from the previous pixel.
|
||||
return Color { bytes[0], bytes[1], bytes[2], pixel.alpha() };
|
||||
}
|
||||
|
||||
static ErrorOr<Color> decode_qoi_op_rgba(Stream& stream, u8 first_byte)
|
||||
{
|
||||
VERIFY(first_byte == QOI_OP_RGBA);
|
||||
u8 bytes[4];
|
||||
TRY(stream.read_until_filled({ &bytes, array_size(bytes) }));
|
||||
return Color { bytes[0], bytes[1], bytes[2], bytes[3] };
|
||||
}
|
||||
|
||||
static ErrorOr<u8> decode_qoi_op_index(Stream&, u8 first_byte)
|
||||
{
|
||||
VERIFY((first_byte & QOI_MASK_2) == QOI_OP_INDEX);
|
||||
u8 index = first_byte & ~QOI_MASK_2;
|
||||
VERIFY(index <= 63);
|
||||
return index;
|
||||
}
|
||||
|
||||
static ErrorOr<Color> decode_qoi_op_diff(Stream&, u8 first_byte, Color pixel)
|
||||
{
|
||||
VERIFY((first_byte & QOI_MASK_2) == QOI_OP_DIFF);
|
||||
u8 dr = (first_byte & 0b00110000) >> 4;
|
||||
u8 dg = (first_byte & 0b00001100) >> 2;
|
||||
u8 db = (first_byte & 0b00000011);
|
||||
VERIFY(dr <= 3 && dg <= 3 && db <= 3);
|
||||
|
||||
// Values are stored as unsigned integers with a bias of 2.
|
||||
return Color {
|
||||
static_cast<u8>(pixel.red() + static_cast<i8>(dr - 2)),
|
||||
static_cast<u8>(pixel.green() + static_cast<i8>(dg - 2)),
|
||||
static_cast<u8>(pixel.blue() + static_cast<i8>(db - 2)),
|
||||
pixel.alpha(),
|
||||
};
|
||||
}
|
||||
|
||||
static ErrorOr<Color> decode_qoi_op_luma(Stream& stream, u8 first_byte, Color pixel)
|
||||
{
|
||||
VERIFY((first_byte & QOI_MASK_2) == QOI_OP_LUMA);
|
||||
auto byte = TRY(stream.read_value<u8>());
|
||||
u8 diff_green = (first_byte & ~QOI_MASK_2);
|
||||
u8 dr_dg = (byte & 0b11110000) >> 4;
|
||||
u8 db_dg = (byte & 0b00001111);
|
||||
|
||||
// Values are stored as unsigned integers with a bias of 32 for the green channel and a bias of 8 for the red and blue channel.
|
||||
return Color {
|
||||
static_cast<u8>(pixel.red() + static_cast<i8>((diff_green - 32) + (dr_dg - 8))),
|
||||
static_cast<u8>(pixel.green() + static_cast<i8>(diff_green - 32)),
|
||||
static_cast<u8>(pixel.blue() + static_cast<i8>((diff_green - 32) + (db_dg - 8))),
|
||||
pixel.alpha(),
|
||||
};
|
||||
}
|
||||
|
||||
static ErrorOr<u8> decode_qoi_op_run(Stream&, u8 first_byte)
|
||||
{
|
||||
VERIFY((first_byte & QOI_MASK_2) == QOI_OP_RUN);
|
||||
u8 run = first_byte & ~QOI_MASK_2;
|
||||
|
||||
// The run-length is stored with a bias of -1.
|
||||
run += 1;
|
||||
|
||||
// Note that the run-lengths 63 and 64 (b111110 and b111111) are illegal as they are occupied by the QOI_OP_RGB and QOI_OP_RGBA tags.
|
||||
if (run == QOI_OP_RGB || run == QOI_OP_RGBA)
|
||||
return Error::from_string_literal("Invalid QOI image: illegal run length");
|
||||
|
||||
VERIFY(run >= 1 && run <= 62);
|
||||
return run;
|
||||
}
|
||||
|
||||
static ErrorOr<void> decode_qoi_end_marker(Stream& stream)
|
||||
{
|
||||
u8 bytes[array_size(END_MARKER)];
|
||||
TRY(stream.read_until_filled({ &bytes, array_size(bytes) }));
|
||||
if (!stream.is_eof())
|
||||
return Error::from_string_literal("Invalid QOI image: expected end of stream but more bytes are available");
|
||||
if (memcmp(&END_MARKER, &bytes, array_size(bytes)) != 0)
|
||||
return Error::from_string_literal("Invalid QOI image: incorrect end marker");
|
||||
return {};
|
||||
}
|
||||
|
||||
static ErrorOr<NonnullRefPtr<Bitmap>> decode_qoi_image(Stream& stream, u32 width, u32 height)
|
||||
{
|
||||
// FIXME: Why is Gfx::Bitmap's size signed? Makes no sense whatsoever.
|
||||
if (width > NumericLimits<int>::max())
|
||||
return Error::from_string_literal("Cannot create bitmap for QOI image of valid size, width exceeds maximum Gfx::Bitmap width");
|
||||
if (height > NumericLimits<int>::max())
|
||||
return Error::from_string_literal("Cannot create bitmap for QOI image of valid size, height exceeds maximum Gfx::Bitmap height");
|
||||
|
||||
auto bitmap = TRY(Bitmap::create(BitmapFormat::BGRA8888, { width, height }));
|
||||
|
||||
u8 run = 0;
|
||||
Color pixel = { 0, 0, 0, 255 };
|
||||
Color previous_pixels[64] {};
|
||||
|
||||
for (u32 y = 0; y < height; ++y) {
|
||||
for (u32 x = 0; x < width; ++x) {
|
||||
if (run > 0)
|
||||
--run;
|
||||
if (run == 0) {
|
||||
auto first_byte = TRY(stream.read_value<u8>());
|
||||
if (first_byte == QOI_OP_RGB)
|
||||
pixel = TRY(decode_qoi_op_rgb(stream, first_byte, pixel));
|
||||
else if (first_byte == QOI_OP_RGBA)
|
||||
pixel = TRY(decode_qoi_op_rgba(stream, first_byte));
|
||||
else if ((first_byte & QOI_MASK_2) == QOI_OP_INDEX)
|
||||
pixel = previous_pixels[TRY(decode_qoi_op_index(stream, first_byte))];
|
||||
else if ((first_byte & QOI_MASK_2) == QOI_OP_DIFF)
|
||||
pixel = TRY(decode_qoi_op_diff(stream, first_byte, pixel));
|
||||
else if ((first_byte & QOI_MASK_2) == QOI_OP_LUMA)
|
||||
pixel = TRY(decode_qoi_op_luma(stream, first_byte, pixel));
|
||||
else if ((first_byte & QOI_MASK_2) == QOI_OP_RUN)
|
||||
run = TRY(decode_qoi_op_run(stream, first_byte));
|
||||
else
|
||||
return Error::from_string_literal("Invalid QOI image: unknown chunk tag");
|
||||
}
|
||||
auto index_position = (pixel.red() * 3 + pixel.green() * 5 + pixel.blue() * 7 + pixel.alpha() * 11) % 64;
|
||||
previous_pixels[index_position] = pixel;
|
||||
bitmap->set_pixel(x, y, pixel);
|
||||
}
|
||||
}
|
||||
TRY(decode_qoi_end_marker(stream));
|
||||
return { move(bitmap) };
|
||||
}
|
||||
|
||||
QOIImageDecoderPlugin::QOIImageDecoderPlugin(NonnullOwnPtr<Stream> stream)
|
||||
{
|
||||
m_context = make<QOILoadingContext>();
|
||||
m_context->stream = move(stream);
|
||||
}
|
||||
|
||||
IntSize QOIImageDecoderPlugin::size()
|
||||
{
|
||||
if (m_context->state < QOILoadingContext::State::HeaderDecoded) {
|
||||
// FIXME: This is a weird API (inherited from ImageDecoderPlugin), should probably propagate errors by returning ErrorOr<IntSize>.
|
||||
// For the time being, ignore the result and rely on the context's state.
|
||||
(void)decode_header_and_update_context(*m_context->stream);
|
||||
}
|
||||
|
||||
if (m_context->state == QOILoadingContext::State::Error)
|
||||
return {};
|
||||
|
||||
return { m_context->header.width, m_context->header.height };
|
||||
}
|
||||
|
||||
void QOIImageDecoderPlugin::set_volatile()
|
||||
{
|
||||
if (m_context->bitmap)
|
||||
m_context->bitmap->set_volatile();
|
||||
}
|
||||
|
||||
bool QOIImageDecoderPlugin::set_nonvolatile(bool& was_purged)
|
||||
{
|
||||
if (!m_context->bitmap)
|
||||
return false;
|
||||
return m_context->bitmap->set_nonvolatile(was_purged);
|
||||
}
|
||||
|
||||
bool QOIImageDecoderPlugin::initialize()
|
||||
{
|
||||
return !decode_header_and_update_context(*m_context->stream).is_error();
|
||||
}
|
||||
|
||||
bool QOIImageDecoderPlugin::sniff(ReadonlyBytes data)
|
||||
{
|
||||
FixedMemoryStream stream { { data.data(), data.size() } };
|
||||
return !decode_qoi_header(stream).is_error();
|
||||
}
|
||||
|
||||
ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> QOIImageDecoderPlugin::create(ReadonlyBytes data)
|
||||
{
|
||||
auto stream = TRY(try_make<FixedMemoryStream>(data));
|
||||
return adopt_nonnull_own_or_enomem(new (nothrow) QOIImageDecoderPlugin(move(stream)));
|
||||
}
|
||||
|
||||
ErrorOr<ImageFrameDescriptor> QOIImageDecoderPlugin::frame(size_t index)
|
||||
{
|
||||
if (index > 0)
|
||||
return Error::from_string_literal("Invalid frame index");
|
||||
|
||||
// No one should try to decode the frame again after an error was already returned.
|
||||
VERIFY(m_context->state != QOILoadingContext::State::Error);
|
||||
|
||||
if (m_context->state == QOILoadingContext::State::NotDecoded) {
|
||||
TRY(decode_header_and_update_context(*m_context->stream));
|
||||
TRY(decode_image_and_update_context(*m_context->stream));
|
||||
} else if (m_context->state == QOILoadingContext::State::HeaderDecoded) {
|
||||
TRY(decode_image_and_update_context(*m_context->stream));
|
||||
}
|
||||
|
||||
VERIFY(m_context->state == QOILoadingContext::State::ImageDecoded);
|
||||
VERIFY(m_context->bitmap);
|
||||
return ImageFrameDescriptor { m_context->bitmap, 0 };
|
||||
}
|
||||
|
||||
ErrorOr<void> QOIImageDecoderPlugin::decode_header_and_update_context(Stream& stream)
|
||||
{
|
||||
VERIFY(m_context->state < QOILoadingContext::State::HeaderDecoded);
|
||||
auto error_or_header = decode_qoi_header(stream);
|
||||
if (error_or_header.is_error()) {
|
||||
m_context->state = QOILoadingContext::State::Error;
|
||||
return error_or_header.release_error();
|
||||
}
|
||||
m_context->state = QOILoadingContext::State::HeaderDecoded;
|
||||
m_context->header = error_or_header.release_value();
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> QOIImageDecoderPlugin::decode_image_and_update_context(Stream& stream)
|
||||
{
|
||||
VERIFY(m_context->state < QOILoadingContext::State::ImageDecoded);
|
||||
auto error_or_bitmap = decode_qoi_image(stream, m_context->header.width, m_context->header.height);
|
||||
if (error_or_bitmap.is_error()) {
|
||||
m_context->state = QOILoadingContext::State::Error;
|
||||
return error_or_bitmap.release_error();
|
||||
}
|
||||
m_context->state = QOILoadingContext::State::ImageDecoded;
|
||||
m_context->bitmap = error_or_bitmap.release_value();
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<Optional<ReadonlyBytes>> QOIImageDecoderPlugin::icc_data()
|
||||
{
|
||||
return OptionalNone {};
|
||||
}
|
||||
|
||||
}
|
||||
70
Userland/Libraries/LibGfx/ImageFormats/QOILoader.h
Normal file
70
Userland/Libraries/LibGfx/ImageFormats/QOILoader.h
Normal file
|
|
@ -0,0 +1,70 @@
|
|||
/*
|
||||
* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/Forward.h>
|
||||
#include <LibGfx/Forward.h>
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
// Decoder for the "Quite OK Image" format (v1.0).
|
||||
// https://qoiformat.org/qoi-specification.pdf
|
||||
|
||||
struct [[gnu::packed]] QOIHeader {
|
||||
char magic[4];
|
||||
u32 width;
|
||||
u32 height;
|
||||
u8 channels;
|
||||
u8 colorspace;
|
||||
};
|
||||
|
||||
struct QOILoadingContext {
|
||||
enum class State {
|
||||
NotDecoded = 0,
|
||||
HeaderDecoded,
|
||||
ImageDecoded,
|
||||
Error,
|
||||
};
|
||||
State state { State::NotDecoded };
|
||||
OwnPtr<Stream> stream {};
|
||||
QOIHeader header {};
|
||||
RefPtr<Bitmap> bitmap;
|
||||
};
|
||||
|
||||
class QOIImageDecoderPlugin final : public ImageDecoderPlugin {
|
||||
public:
|
||||
static bool sniff(ReadonlyBytes);
|
||||
static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);
|
||||
|
||||
virtual ~QOIImageDecoderPlugin() override = default;
|
||||
|
||||
virtual IntSize size() override;
|
||||
virtual void set_volatile() override;
|
||||
[[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) override;
|
||||
virtual bool initialize() override;
|
||||
virtual bool is_animated() override { return false; }
|
||||
virtual size_t loop_count() override { return 0; }
|
||||
virtual size_t frame_count() override { return 1; }
|
||||
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
|
||||
virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
|
||||
|
||||
private:
|
||||
ErrorOr<void> decode_header_and_update_context(Stream&);
|
||||
ErrorOr<void> decode_image_and_update_context(Stream&);
|
||||
|
||||
QOIImageDecoderPlugin(NonnullOwnPtr<Stream>);
|
||||
|
||||
OwnPtr<QOILoadingContext> m_context;
|
||||
};
|
||||
|
||||
}
|
||||
|
||||
template<>
|
||||
struct AK::Traits<Gfx::QOIHeader> : public GenericTraits<Gfx::QOIHeader> {
|
||||
static constexpr bool is_trivially_serializable() { return true; }
|
||||
};
|
||||
225
Userland/Libraries/LibGfx/ImageFormats/QOIWriter.cpp
Normal file
225
Userland/Libraries/LibGfx/ImageFormats/QOIWriter.cpp
Normal file
|
|
@ -0,0 +1,225 @@
|
|||
/*
|
||||
* Copyright (c) 2022, Olivier De Cannière <olivier.decanniere96@gmail.com>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include "QOIWriter.h"
|
||||
#include <AK/DeprecatedString.h>
|
||||
#include <AK/Endian.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
static constexpr Array<u8, 4> qoi_magic_bytes = { 'q', 'o', 'i', 'f' };
|
||||
static constexpr Array<u8, 8> qoi_end_marker = { 0, 0, 0, 0, 0, 0, 0, 1 };
|
||||
|
||||
enum class Colorspace {
|
||||
sRGB,
|
||||
Linear,
|
||||
};
|
||||
|
||||
enum class Channels {
|
||||
RGB,
|
||||
RGBA,
|
||||
};
|
||||
|
||||
ErrorOr<ByteBuffer> QOIWriter::encode(Bitmap const& bitmap)
|
||||
{
|
||||
QOIWriter writer;
|
||||
TRY(writer.add_header(bitmap.width(), bitmap.height(), Channels::RGBA, Colorspace::sRGB));
|
||||
|
||||
Color previous_pixel = { 0, 0, 0, 255 };
|
||||
|
||||
bool creating_run = false;
|
||||
int run_length = 0;
|
||||
|
||||
for (auto y = 0; y < bitmap.height(); y++) {
|
||||
for (auto x = 0; x < bitmap.width(); x++) {
|
||||
auto pixel = bitmap.get_pixel(x, y);
|
||||
|
||||
// Check for at most 62 consecutive identical pixels.
|
||||
if (pixel == previous_pixel) {
|
||||
if (!creating_run) {
|
||||
creating_run = true;
|
||||
run_length = 0;
|
||||
writer.insert_into_running_array(pixel);
|
||||
}
|
||||
|
||||
run_length++;
|
||||
|
||||
// If the run reaches a maximum length of 62 or if this is the last pixel then create the chunk.
|
||||
if (run_length == 62 || (y == bitmap.height() - 1 && x == bitmap.width() - 1)) {
|
||||
TRY(writer.add_run_chunk(run_length));
|
||||
creating_run = false;
|
||||
}
|
||||
|
||||
continue;
|
||||
}
|
||||
|
||||
// Run ended with the previous pixel. Create a chunk for it and continue processing this pixel.
|
||||
if (creating_run) {
|
||||
TRY(writer.add_run_chunk(run_length));
|
||||
creating_run = false;
|
||||
}
|
||||
|
||||
// Check if the pixel matches a pixel in the running array.
|
||||
auto index = pixel_hash_function(pixel);
|
||||
auto& array_pixel = writer.running_array[index];
|
||||
if (array_pixel == pixel) {
|
||||
TRY(writer.add_index_chunk(index));
|
||||
previous_pixel = pixel;
|
||||
continue;
|
||||
}
|
||||
|
||||
writer.running_array[index] = pixel;
|
||||
|
||||
// Check if pixel can be expressed as a difference of the previous pixel.
|
||||
if (pixel.alpha() == previous_pixel.alpha()) {
|
||||
int red_difference = pixel.red() - previous_pixel.red();
|
||||
int green_difference = pixel.green() - previous_pixel.green();
|
||||
int blue_difference = pixel.blue() - previous_pixel.blue();
|
||||
int relative_red_difference = red_difference - green_difference;
|
||||
int relative_blue_difference = blue_difference - green_difference;
|
||||
|
||||
if (red_difference > -3 && red_difference < 2
|
||||
&& green_difference > -3 && green_difference < 2
|
||||
&& blue_difference > -3 && blue_difference < 2) {
|
||||
TRY(writer.add_diff_chunk(red_difference, green_difference, blue_difference));
|
||||
previous_pixel = pixel;
|
||||
continue;
|
||||
}
|
||||
if (relative_red_difference > -9 && relative_red_difference < 8
|
||||
&& green_difference > -33 && green_difference < 32
|
||||
&& relative_blue_difference > -9 && relative_blue_difference < 8) {
|
||||
TRY(writer.add_luma_chunk(relative_red_difference, green_difference, relative_blue_difference));
|
||||
previous_pixel = pixel;
|
||||
continue;
|
||||
}
|
||||
|
||||
TRY(writer.add_rgb_chunk(pixel.red(), pixel.green(), pixel.blue()));
|
||||
previous_pixel = pixel;
|
||||
continue;
|
||||
}
|
||||
|
||||
previous_pixel = pixel;
|
||||
|
||||
// Write full color values.
|
||||
TRY(writer.add_rgba_chunk(pixel.red(), pixel.green(), pixel.blue(), pixel.alpha()));
|
||||
}
|
||||
}
|
||||
|
||||
TRY(writer.add_end_marker());
|
||||
|
||||
return ByteBuffer::copy(writer.m_data);
|
||||
}
|
||||
|
||||
ErrorOr<void> QOIWriter::add_header(u32 width, u32 height, Channels channels = Channels::RGBA, Colorspace color_space = Colorspace::sRGB)
|
||||
{
|
||||
// FIXME: Handle RGB and all linear channels.
|
||||
if (channels == Channels::RGB || color_space == Colorspace::Linear)
|
||||
TODO();
|
||||
|
||||
TRY(m_data.try_append(qoi_magic_bytes.data(), sizeof(qoi_magic_bytes)));
|
||||
|
||||
auto big_endian_width = AK::convert_between_host_and_big_endian(width);
|
||||
TRY(m_data.try_append(bit_cast<u8*>(&big_endian_width), sizeof(width)));
|
||||
|
||||
auto big_endian_height = AK::convert_between_host_and_big_endian(height);
|
||||
TRY(m_data.try_append(bit_cast<u8*>(&big_endian_height), sizeof(height)));
|
||||
|
||||
// Number of channels: 3 = RGB, 4 = RGBA.
|
||||
TRY(m_data.try_append(4));
|
||||
|
||||
// Colorspace: 0 = sRGB, 1 = all linear channels.
|
||||
TRY(m_data.try_append(color_space == Colorspace::sRGB ? 0 : 1));
|
||||
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> QOIWriter::add_rgb_chunk(u8 r, u8 g, u8 b)
|
||||
{
|
||||
constexpr static u8 rgb_tag = 0b1111'1110;
|
||||
|
||||
TRY(m_data.try_append(rgb_tag));
|
||||
TRY(m_data.try_append(r));
|
||||
TRY(m_data.try_append(g));
|
||||
TRY(m_data.try_append(b));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> QOIWriter::add_rgba_chunk(u8 r, u8 g, u8 b, u8 a)
|
||||
{
|
||||
constexpr static u8 rgba_tag = 0b1111'1111;
|
||||
|
||||
TRY(m_data.try_append(rgba_tag));
|
||||
TRY(m_data.try_append(r));
|
||||
TRY(m_data.try_append(g));
|
||||
TRY(m_data.try_append(b));
|
||||
TRY(m_data.try_append(a));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> QOIWriter::add_index_chunk(unsigned int index)
|
||||
{
|
||||
constexpr static u8 index_tag = 0b0000'0000;
|
||||
|
||||
u8 chunk = index_tag | index;
|
||||
TRY(m_data.try_append(chunk));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> QOIWriter::add_diff_chunk(i8 red_difference, i8 green_difference, i8 blue_difference)
|
||||
{
|
||||
constexpr static u8 diff_tag = 0b0100'0000;
|
||||
|
||||
u8 bias = 2;
|
||||
u8 red = red_difference + bias;
|
||||
u8 green = green_difference + bias;
|
||||
u8 blue = blue_difference + bias;
|
||||
|
||||
u8 chunk = diff_tag | (red << 4) | (green << 2) | blue;
|
||||
TRY(m_data.try_append(chunk));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> QOIWriter::add_luma_chunk(i8 relative_red_difference, i8 green_difference, i8 relative_blue_difference)
|
||||
{
|
||||
constexpr static u8 luma_tag = 0b1000'0000;
|
||||
u8 green_bias = 32;
|
||||
u8 red_blue_bias = 8;
|
||||
|
||||
u8 chunk1 = luma_tag | (green_difference + green_bias);
|
||||
u8 chunk2 = ((relative_red_difference + red_blue_bias) << 4) | (relative_blue_difference + red_blue_bias);
|
||||
TRY(m_data.try_append(chunk1));
|
||||
TRY(m_data.try_append(chunk2));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> QOIWriter::add_run_chunk(unsigned run_length)
|
||||
{
|
||||
constexpr static u8 run_tag = 0b1100'0000;
|
||||
int bias = -1;
|
||||
|
||||
u8 chunk = run_tag | (run_length + bias);
|
||||
TRY(m_data.try_append(chunk));
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> QOIWriter::add_end_marker()
|
||||
{
|
||||
TRY(m_data.try_append(qoi_end_marker.data(), sizeof(qoi_end_marker)));
|
||||
return {};
|
||||
}
|
||||
|
||||
u32 QOIWriter::pixel_hash_function(Color pixel)
|
||||
{
|
||||
return (pixel.red() * 3 + pixel.green() * 5 + pixel.blue() * 7 + pixel.alpha() * 11) % 64;
|
||||
}
|
||||
|
||||
void QOIWriter::insert_into_running_array(Color pixel)
|
||||
{
|
||||
auto index = pixel_hash_function(pixel);
|
||||
running_array[index] = pixel;
|
||||
}
|
||||
|
||||
}
|
||||
40
Userland/Libraries/LibGfx/ImageFormats/QOIWriter.h
Normal file
40
Userland/Libraries/LibGfx/ImageFormats/QOIWriter.h
Normal file
|
|
@ -0,0 +1,40 @@
|
|||
/*
|
||||
* Copyright (c) 2022, Olivier De Cannière <olivier.decanniere96@gmail.com>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/Error.h>
|
||||
#include <AK/Vector.h>
|
||||
#include <LibGfx/Bitmap.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
enum class Colorspace;
|
||||
enum class Channels;
|
||||
|
||||
class QOIWriter {
|
||||
public:
|
||||
static ErrorOr<ByteBuffer> encode(Gfx::Bitmap const&);
|
||||
|
||||
private:
|
||||
QOIWriter() = default;
|
||||
|
||||
Vector<u8> m_data;
|
||||
ErrorOr<void> add_header(u32 width, u32 height, Channels, Colorspace);
|
||||
ErrorOr<void> add_rgb_chunk(u8, u8, u8);
|
||||
ErrorOr<void> add_rgba_chunk(u8, u8, u8, u8);
|
||||
ErrorOr<void> add_index_chunk(u32 index);
|
||||
ErrorOr<void> add_diff_chunk(i8 red_difference, i8 green_difference, i8 blue_difference);
|
||||
ErrorOr<void> add_luma_chunk(i8 relative_red_difference, i8 green_difference, i8 relative_blue_difference);
|
||||
ErrorOr<void> add_run_chunk(u32 run_length);
|
||||
ErrorOr<void> add_end_marker();
|
||||
|
||||
Array<Color, 64> running_array;
|
||||
static u32 pixel_hash_function(Color pixel);
|
||||
void insert_into_running_array(Color pixel);
|
||||
};
|
||||
|
||||
}
|
||||
370
Userland/Libraries/LibGfx/ImageFormats/TGALoader.cpp
Normal file
370
Userland/Libraries/LibGfx/ImageFormats/TGALoader.cpp
Normal file
|
|
@ -0,0 +1,370 @@
|
|||
/*
|
||||
* Copyright (c) 2022, Tom Needham <06needhamt@gmail.com>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include <AK/Span.h>
|
||||
#include <AK/StdLibExtraDetails.h>
|
||||
#include <AK/String.h>
|
||||
#include <LibGfx/ImageFormats/TGALoader.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
enum TGADataType : u8 {
|
||||
None = 0,
|
||||
UncompressedColorMapped = 1,
|
||||
UncompressedRGB = 2,
|
||||
UncompressedBlackAndWhite = 3,
|
||||
RunLengthEncodedColorMapped = 9,
|
||||
RunLengthEncodedRGB = 10,
|
||||
CompressedBlackAndWhite = 11,
|
||||
CompressedColorMapped = 32,
|
||||
CompressedColorMappedFourPass = 33
|
||||
};
|
||||
|
||||
struct [[gnu::packed]] TGAHeader {
|
||||
u8 id_length;
|
||||
u8 color_map_type;
|
||||
TGADataType data_type_code;
|
||||
i16 color_map_origin;
|
||||
i16 color_map_length;
|
||||
u8 color_map_depth;
|
||||
i16 x_origin;
|
||||
i16 y_origin;
|
||||
u16 width;
|
||||
u16 height;
|
||||
u8 bits_per_pixel;
|
||||
u8 image_descriptor;
|
||||
};
|
||||
|
||||
static_assert(sizeof(TGAHeader) == 18);
|
||||
|
||||
union [[gnu::packed]] TGAPixel {
|
||||
struct TGAColor {
|
||||
u8 blue;
|
||||
u8 green;
|
||||
u8 red;
|
||||
u8 alpha;
|
||||
} components;
|
||||
|
||||
u32 data;
|
||||
};
|
||||
|
||||
struct TGAPixelPacket {
|
||||
bool raw;
|
||||
u8 pixels_count;
|
||||
};
|
||||
|
||||
static_assert(AssertSize<TGAPixel, 4>());
|
||||
|
||||
class TGAReader {
|
||||
public:
|
||||
TGAReader(ReadonlyBytes data)
|
||||
: m_data(move(data))
|
||||
{
|
||||
}
|
||||
|
||||
TGAReader(ReadonlyBytes data, size_t index)
|
||||
: m_data(move(data))
|
||||
, m_index(index)
|
||||
{
|
||||
}
|
||||
|
||||
ALWAYS_INLINE u8 read_u8()
|
||||
{
|
||||
u8 value = m_data[m_index];
|
||||
m_index++;
|
||||
return value;
|
||||
}
|
||||
|
||||
ALWAYS_INLINE i8 read_i8()
|
||||
{
|
||||
return static_cast<i8>(read_u8());
|
||||
}
|
||||
|
||||
ALWAYS_INLINE u16 read_u16()
|
||||
{
|
||||
return read_u8() | read_u8() << 8;
|
||||
}
|
||||
|
||||
ALWAYS_INLINE i16 read_i16()
|
||||
{
|
||||
return read_i8() | read_i8() << 8;
|
||||
}
|
||||
|
||||
ALWAYS_INLINE u32 read_u32()
|
||||
{
|
||||
return read_u16() | read_u16() << 16;
|
||||
}
|
||||
|
||||
ALWAYS_INLINE i32 read_i32()
|
||||
{
|
||||
return read_i16() | read_i16() << 16;
|
||||
}
|
||||
|
||||
ALWAYS_INLINE TGAPixelPacket read_packet_type()
|
||||
{
|
||||
auto pixel_packet_type = read_u8();
|
||||
auto pixel_packet = TGAPixelPacket();
|
||||
pixel_packet.raw = !(pixel_packet_type & 0x80);
|
||||
pixel_packet.pixels_count = (pixel_packet_type & 0x7f);
|
||||
|
||||
// NOTE: Run-length-encoded/Raw pixel packets cannot encode zero pixels,
|
||||
// so value 0 stands for 1 pixel, 1 stands for 2, etc...
|
||||
pixel_packet.pixels_count++;
|
||||
return pixel_packet;
|
||||
}
|
||||
|
||||
ALWAYS_INLINE TGAPixel read_pixel(u8 bits_per_pixel)
|
||||
{
|
||||
auto pixel = TGAPixel();
|
||||
|
||||
switch (bits_per_pixel) {
|
||||
case 24:
|
||||
pixel.components.blue = read_u8();
|
||||
pixel.components.green = read_u8();
|
||||
pixel.components.red = read_u8();
|
||||
pixel.components.alpha = 0xFF;
|
||||
return pixel;
|
||||
|
||||
case 32:
|
||||
pixel.components.blue = read_u8();
|
||||
pixel.components.green = read_u8();
|
||||
pixel.components.red = read_u8();
|
||||
pixel.components.alpha = read_u8();
|
||||
return pixel;
|
||||
|
||||
default:
|
||||
VERIFY_NOT_REACHED();
|
||||
}
|
||||
}
|
||||
|
||||
size_t index() const
|
||||
{
|
||||
return m_index;
|
||||
}
|
||||
|
||||
ReadonlyBytes data() const
|
||||
{
|
||||
return m_data;
|
||||
}
|
||||
|
||||
private:
|
||||
ReadonlyBytes m_data;
|
||||
size_t m_index { 0 };
|
||||
};
|
||||
|
||||
struct TGALoadingContext {
|
||||
TGAHeader header;
|
||||
OwnPtr<TGAReader> reader = { nullptr };
|
||||
RefPtr<Gfx::Bitmap> bitmap;
|
||||
};
|
||||
|
||||
TGAImageDecoderPlugin::TGAImageDecoderPlugin(u8 const* file_data, size_t file_size)
|
||||
{
|
||||
m_context = make<TGALoadingContext>();
|
||||
m_context->reader = make<TGAReader>(ReadonlyBytes { file_data, file_size });
|
||||
}
|
||||
|
||||
TGAImageDecoderPlugin::~TGAImageDecoderPlugin() = default;
|
||||
|
||||
IntSize TGAImageDecoderPlugin::size()
|
||||
{
|
||||
return IntSize { m_context->header.width, m_context->header.height };
|
||||
}
|
||||
|
||||
void TGAImageDecoderPlugin::set_volatile()
|
||||
{
|
||||
if (m_context->bitmap)
|
||||
m_context->bitmap->set_volatile();
|
||||
}
|
||||
|
||||
bool TGAImageDecoderPlugin::set_nonvolatile(bool& was_purged)
|
||||
{
|
||||
if (!m_context->bitmap)
|
||||
return false;
|
||||
return m_context->bitmap->set_nonvolatile(was_purged);
|
||||
}
|
||||
|
||||
bool TGAImageDecoderPlugin::decode_tga_header()
|
||||
{
|
||||
auto& reader = m_context->reader;
|
||||
if (reader->data().size() < sizeof(TGAHeader))
|
||||
return false;
|
||||
|
||||
m_context->header = TGAHeader();
|
||||
m_context->header.id_length = reader->read_u8();
|
||||
m_context->header.color_map_type = reader->read_u8();
|
||||
m_context->header.data_type_code = static_cast<TGADataType>(reader->read_u8());
|
||||
m_context->header.color_map_origin = reader->read_i16();
|
||||
m_context->header.color_map_length = reader->read_i16();
|
||||
m_context->header.color_map_depth = reader->read_u8();
|
||||
m_context->header.x_origin = reader->read_i16();
|
||||
m_context->header.y_origin = reader->read_i16();
|
||||
m_context->header.width = reader->read_u16();
|
||||
m_context->header.height = reader->read_u16();
|
||||
m_context->header.bits_per_pixel = reader->read_u8();
|
||||
m_context->header.image_descriptor = reader->read_u8();
|
||||
|
||||
auto bytes_remaining = reader->data().size() - reader->index();
|
||||
|
||||
// FIXME: Check for multiplication overflow!
|
||||
if (m_context->header.data_type_code == TGADataType::UncompressedRGB && bytes_remaining < static_cast<size_t>(m_context->header.width * m_context->header.height * (m_context->header.bits_per_pixel / 8)))
|
||||
return false;
|
||||
|
||||
if (m_context->header.bits_per_pixel < 8 || m_context->header.bits_per_pixel > 32)
|
||||
return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool TGAImageDecoderPlugin::initialize()
|
||||
{
|
||||
return decode_tga_header();
|
||||
}
|
||||
|
||||
ErrorOr<bool> TGAImageDecoderPlugin::validate_before_create(ReadonlyBytes data)
|
||||
{
|
||||
if (data.size() < sizeof(TGAHeader))
|
||||
return false;
|
||||
TGAHeader const& header = *reinterpret_cast<TGAHeader const*>(data.data());
|
||||
// FIXME: Check for multiplication overflow!
|
||||
if (header.data_type_code == TGADataType::UncompressedRGB && data.size() < static_cast<size_t>(header.width * header.height * (header.bits_per_pixel / 8)))
|
||||
return false;
|
||||
if (header.bits_per_pixel < 8 || header.bits_per_pixel > 32)
|
||||
return false;
|
||||
return true;
|
||||
}
|
||||
|
||||
ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> TGAImageDecoderPlugin::create(ReadonlyBytes data)
|
||||
{
|
||||
return adopt_nonnull_own_or_enomem(new (nothrow) TGAImageDecoderPlugin(data.data(), data.size()));
|
||||
}
|
||||
|
||||
bool TGAImageDecoderPlugin::is_animated()
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
size_t TGAImageDecoderPlugin::loop_count()
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
size_t TGAImageDecoderPlugin::frame_count()
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
ErrorOr<ImageFrameDescriptor> TGAImageDecoderPlugin::frame(size_t index)
|
||||
{
|
||||
auto bits_per_pixel = m_context->header.bits_per_pixel;
|
||||
auto color_map = m_context->header.color_map_type;
|
||||
auto data_type = m_context->header.data_type_code;
|
||||
auto width = m_context->header.width;
|
||||
auto height = m_context->header.height;
|
||||
auto x_origin = m_context->header.x_origin;
|
||||
auto y_origin = m_context->header.y_origin;
|
||||
|
||||
if (index != 0)
|
||||
return Error::from_string_literal("TGAImageDecoderPlugin: frame index must be 0");
|
||||
|
||||
if (color_map > 1)
|
||||
return Error::from_string_literal("TGAImageDecoderPlugin: Invalid color map type");
|
||||
|
||||
if (m_context->bitmap) {
|
||||
return ImageFrameDescriptor { m_context->bitmap, 0 };
|
||||
} else {
|
||||
// NOTE: Just to be on the safe side, if m_context->bitmap is nullptr, then
|
||||
// just re-construct the reader object. This will ensure that if the bitmap
|
||||
// was set as volatile and therefore it is gone, we can always re-generate it
|
||||
// with a new call to this method!
|
||||
VERIFY(m_context->reader);
|
||||
m_context->reader = make<TGAReader>(m_context->reader->data(), sizeof(TGAHeader));
|
||||
}
|
||||
|
||||
RefPtr<Gfx::Bitmap> bitmap;
|
||||
switch (bits_per_pixel) {
|
||||
case 24:
|
||||
bitmap = TRY(Bitmap::create(BitmapFormat::BGRx8888, { m_context->header.width, m_context->header.height }));
|
||||
break;
|
||||
|
||||
case 32:
|
||||
bitmap = TRY(Bitmap::create(BitmapFormat::BGRA8888, { m_context->header.width, m_context->header.height }));
|
||||
break;
|
||||
|
||||
default:
|
||||
// FIXME: Implement other TGA bit depths
|
||||
return Error::from_string_literal("TGAImageDecoderPlugin: Can only handle 24 and 32 bits per pixel");
|
||||
}
|
||||
|
||||
// FIXME: Try to understand the Image origin (instead of X and Y origin coordinates)
|
||||
// based on the Image descriptor, Field 5.6, bits 4 and 5.
|
||||
|
||||
// NOTE: If Y origin is set to a negative number, just assume the generating software
|
||||
// meant that we start with Y origin at the top height of the picture.
|
||||
// At least this is the observed behavior when generating some pictures in GIMP.
|
||||
if (y_origin < 0)
|
||||
y_origin = height;
|
||||
if (y_origin != 0 && y_origin != height)
|
||||
return Error::from_string_literal("TGAImageDecoderPlugin: Can only handle Y origin which is 0 or the entire height");
|
||||
if (x_origin != 0 && x_origin != width)
|
||||
return Error::from_string_literal("TGAImageDecoderPlugin: Can only handle X origin which is 0 or the entire width");
|
||||
|
||||
switch (data_type) {
|
||||
case TGADataType::UncompressedRGB: {
|
||||
for (int row = 0; row < height; ++row) {
|
||||
for (int col = 0; col < width; ++col) {
|
||||
auto pixel = m_context->reader->read_pixel(bits_per_pixel);
|
||||
auto actual_row = row;
|
||||
if (y_origin < height)
|
||||
actual_row = height - 1 - row;
|
||||
auto actual_col = col;
|
||||
if (x_origin > width)
|
||||
actual_col = width - 1 - col;
|
||||
bitmap->scanline(actual_row)[actual_col] = pixel.data;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
case TGADataType::RunLengthEncodedRGB: {
|
||||
size_t pixel_index = 0;
|
||||
size_t pixel_count = height * width;
|
||||
while (pixel_index < pixel_count) {
|
||||
auto packet_type = m_context->reader->read_packet_type();
|
||||
VERIFY(packet_type.pixels_count > 0);
|
||||
TGAPixel pixel = m_context->reader->read_pixel(bits_per_pixel);
|
||||
auto max_pixel_index = min(pixel_index + packet_type.pixels_count, pixel_count);
|
||||
for (size_t current_pixel_index = pixel_index; current_pixel_index < max_pixel_index; ++current_pixel_index) {
|
||||
int row = current_pixel_index / width;
|
||||
int col = current_pixel_index % width;
|
||||
auto actual_row = row;
|
||||
if (y_origin < height)
|
||||
actual_row = height - 1 - row;
|
||||
auto actual_col = col;
|
||||
if (x_origin > width)
|
||||
actual_col = width - 1 - col;
|
||||
bitmap->scanline(actual_row)[actual_col] = pixel.data;
|
||||
if (packet_type.raw && (current_pixel_index + 1) < max_pixel_index)
|
||||
pixel = m_context->reader->read_pixel(bits_per_pixel);
|
||||
}
|
||||
pixel_index += packet_type.pixels_count;
|
||||
}
|
||||
break;
|
||||
}
|
||||
default:
|
||||
// FIXME: Implement other TGA data types
|
||||
return Error::from_string_literal("TGAImageDecoderPlugin: Can currently only handle the UncompressedRGB or CompressedRGB data type");
|
||||
}
|
||||
|
||||
m_context->bitmap = bitmap;
|
||||
return ImageFrameDescriptor { m_context->bitmap, 0 };
|
||||
}
|
||||
|
||||
ErrorOr<Optional<ReadonlyBytes>> TGAImageDecoderPlugin::icc_data()
|
||||
{
|
||||
return OptionalNone {};
|
||||
}
|
||||
|
||||
}
|
||||
38
Userland/Libraries/LibGfx/ImageFormats/TGALoader.h
Normal file
38
Userland/Libraries/LibGfx/ImageFormats/TGALoader.h
Normal file
|
|
@ -0,0 +1,38 @@
|
|||
/*
|
||||
* Copyright (c) 2022, Tom Needham <06needhamt@gmail.com>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
struct TGALoadingContext;
|
||||
|
||||
class TGAImageDecoderPlugin final : public ImageDecoderPlugin {
|
||||
public:
|
||||
static ErrorOr<bool> validate_before_create(ReadonlyBytes);
|
||||
static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);
|
||||
|
||||
virtual ~TGAImageDecoderPlugin() override;
|
||||
TGAImageDecoderPlugin(u8 const*, size_t);
|
||||
|
||||
virtual IntSize size() override;
|
||||
virtual void set_volatile() override;
|
||||
[[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) override;
|
||||
virtual bool initialize() override;
|
||||
virtual bool is_animated() override;
|
||||
virtual size_t loop_count() override;
|
||||
virtual size_t frame_count() override;
|
||||
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
|
||||
virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
|
||||
|
||||
private:
|
||||
bool decode_tga_header();
|
||||
OwnPtr<TGALoadingContext> m_context;
|
||||
};
|
||||
|
||||
}
|
||||
612
Userland/Libraries/LibGfx/ImageFormats/WebPLoader.cpp
Normal file
612
Userland/Libraries/LibGfx/ImageFormats/WebPLoader.cpp
Normal file
|
|
@ -0,0 +1,612 @@
|
|||
/*
|
||||
* Copyright (c) 2023, Nico Weber <thakis@chromium.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include <AK/Debug.h>
|
||||
#include <AK/Endian.h>
|
||||
#include <AK/Format.h>
|
||||
#include <AK/Vector.h>
|
||||
#include <LibGfx/ImageFormats/WebPLoader.h>
|
||||
|
||||
// Overview: https://developers.google.com/speed/webp/docs/compression
|
||||
// Container: https://developers.google.com/speed/webp/docs/riff_container
|
||||
// Lossless format: https://developers.google.com/speed/webp/docs/webp_lossless_bitstream_specification
|
||||
// Lossy format: https://datatracker.ietf.org/doc/html/rfc6386
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
namespace {
|
||||
|
||||
struct FourCC {
|
||||
constexpr FourCC(char const* name)
|
||||
{
|
||||
cc[0] = name[0];
|
||||
cc[1] = name[1];
|
||||
cc[2] = name[2];
|
||||
cc[3] = name[3];
|
||||
}
|
||||
|
||||
bool operator==(FourCC const&) const = default;
|
||||
bool operator!=(FourCC const&) const = default;
|
||||
|
||||
char cc[4];
|
||||
};
|
||||
|
||||
// https://developers.google.com/speed/webp/docs/riff_container#webp_file_header
|
||||
struct WebPFileHeader {
|
||||
FourCC riff;
|
||||
LittleEndian<u32> file_size;
|
||||
FourCC webp;
|
||||
};
|
||||
static_assert(AssertSize<WebPFileHeader, 12>());
|
||||
|
||||
struct ChunkHeader {
|
||||
FourCC chunk_type;
|
||||
LittleEndian<u32> chunk_size;
|
||||
};
|
||||
static_assert(AssertSize<ChunkHeader, 8>());
|
||||
|
||||
struct Chunk {
|
||||
FourCC type;
|
||||
ReadonlyBytes data;
|
||||
};
|
||||
|
||||
struct VP8Header {
|
||||
u8 version;
|
||||
bool show_frame;
|
||||
u32 size_of_first_partition;
|
||||
u32 width;
|
||||
u8 horizontal_scale;
|
||||
u32 height;
|
||||
u8 vertical_scale;
|
||||
};
|
||||
|
||||
struct VP8LHeader {
|
||||
u16 width;
|
||||
u16 height;
|
||||
bool is_alpha_used;
|
||||
};
|
||||
|
||||
struct VP8XHeader {
|
||||
bool has_icc;
|
||||
bool has_alpha;
|
||||
bool has_exif;
|
||||
bool has_xmp;
|
||||
bool has_animation;
|
||||
u32 width;
|
||||
u32 height;
|
||||
};
|
||||
|
||||
struct ANIMChunk {
|
||||
u32 background_color;
|
||||
u16 loop_count;
|
||||
};
|
||||
|
||||
}
|
||||
|
||||
struct WebPLoadingContext {
|
||||
enum State {
|
||||
NotDecoded = 0,
|
||||
Error,
|
||||
HeaderDecoded,
|
||||
FirstChunkRead,
|
||||
FirstChunkDecoded,
|
||||
ChunksDecoded,
|
||||
BitmapDecoded,
|
||||
};
|
||||
State state { State::NotDecoded };
|
||||
ReadonlyBytes data;
|
||||
|
||||
ReadonlyBytes chunks_cursor;
|
||||
|
||||
Optional<IntSize> size;
|
||||
|
||||
RefPtr<Gfx::Bitmap> bitmap;
|
||||
|
||||
// Either 'VP8 ' (simple lossy file), 'VP8L' (simple lossless file), or 'VP8X' (extended file).
|
||||
Optional<Chunk> first_chunk;
|
||||
union {
|
||||
VP8Header vp8_header;
|
||||
VP8LHeader vp8l_header;
|
||||
VP8XHeader vp8x_header;
|
||||
};
|
||||
|
||||
// If first_chunk is not a VP8X chunk, then only image_data_chunk is set and all the other Chunks are not set.
|
||||
|
||||
// "For a still image, the image data consists of a single frame, which is made up of:
|
||||
// An optional alpha subchunk.
|
||||
// A bitstream subchunk."
|
||||
Optional<Chunk> alpha_chunk; // 'ALPH'
|
||||
Optional<Chunk> image_data_chunk; // Either 'VP8 ' or 'VP8L'.
|
||||
|
||||
Optional<Chunk> animation_header_chunk; // 'ANIM'
|
||||
Vector<Chunk> animation_frame_chunks; // 'ANMF'
|
||||
|
||||
Optional<Chunk> iccp_chunk; // 'ICCP'
|
||||
Optional<Chunk> exif_chunk; // 'EXIF'
|
||||
Optional<Chunk> xmp_chunk; // 'XMP '
|
||||
|
||||
template<size_t N>
|
||||
[[nodiscard]] class Error error(char const (&string_literal)[N])
|
||||
{
|
||||
state = WebPLoadingContext::State::Error;
|
||||
return Error::from_string_literal(string_literal);
|
||||
}
|
||||
};
|
||||
|
||||
// https://developers.google.com/speed/webp/docs/riff_container#webp_file_header
|
||||
static ErrorOr<void> decode_webp_header(WebPLoadingContext& context)
|
||||
{
|
||||
if (context.state >= WebPLoadingContext::HeaderDecoded)
|
||||
return {};
|
||||
|
||||
if (context.data.size() < sizeof(WebPFileHeader))
|
||||
return context.error("Missing WebP header");
|
||||
|
||||
auto& header = *bit_cast<WebPFileHeader const*>(context.data.data());
|
||||
if (header.riff != FourCC("RIFF") || header.webp != FourCC("WEBP"))
|
||||
return context.error("Invalid WebP header");
|
||||
|
||||
// "File Size: [...] The size of the file in bytes starting at offset 8. The maximum value of this field is 2^32 minus 10 bytes."
|
||||
u32 const maximum_webp_file_size = 0xffff'ffff - 9;
|
||||
if (header.file_size > maximum_webp_file_size)
|
||||
return context.error("WebP header file size over maximum");
|
||||
|
||||
// "The file size in the header is the total size of the chunks that follow plus 4 bytes for the 'WEBP' FourCC.
|
||||
// The file SHOULD NOT contain any data after the data specified by File Size.
|
||||
// Readers MAY parse such files, ignoring the trailing data."
|
||||
if (context.data.size() - 8 < header.file_size)
|
||||
return context.error("WebP data too small for size in header");
|
||||
if (context.data.size() - 8 > header.file_size) {
|
||||
dbgln_if(WEBP_DEBUG, "WebP has {} bytes of data, but header needs only {}. Trimming.", context.data.size(), header.file_size + 8);
|
||||
context.data = context.data.trim(header.file_size + 8);
|
||||
}
|
||||
|
||||
context.state = WebPLoadingContext::HeaderDecoded;
|
||||
return {};
|
||||
}
|
||||
|
||||
// https://developers.google.com/speed/webp/docs/riff_container#riff_file_format
|
||||
static ErrorOr<Chunk> decode_webp_chunk_header(WebPLoadingContext& context, ReadonlyBytes chunks)
|
||||
{
|
||||
if (chunks.size() < sizeof(ChunkHeader))
|
||||
return context.error("Not enough data for WebP chunk header");
|
||||
|
||||
auto const& header = *bit_cast<ChunkHeader const*>(chunks.data());
|
||||
dbgln_if(WEBP_DEBUG, "chunk {} size {}", header.chunk_type, header.chunk_size);
|
||||
|
||||
if (chunks.size() < sizeof(ChunkHeader) + header.chunk_size)
|
||||
return context.error("Not enough data for WebP chunk");
|
||||
|
||||
return Chunk { header.chunk_type, { chunks.data() + sizeof(ChunkHeader), header.chunk_size } };
|
||||
}
|
||||
|
||||
// https://developers.google.com/speed/webp/docs/riff_container#riff_file_format
|
||||
static ErrorOr<Chunk> decode_webp_advance_chunk(WebPLoadingContext& context, ReadonlyBytes& chunks)
|
||||
{
|
||||
auto chunk = TRY(decode_webp_chunk_header(context, chunks));
|
||||
|
||||
// "Chunk Size: 32 bits (uint32)
|
||||
// The size of the chunk in bytes, not including this field, the chunk identifier or padding.
|
||||
// Chunk Payload: Chunk Size bytes
|
||||
// The data payload. If Chunk Size is odd, a single padding byte -- that MUST be 0 to conform with RIFF -- is added."
|
||||
chunks = chunks.slice(sizeof(ChunkHeader) + chunk.data.size());
|
||||
|
||||
if (chunk.data.size() % 2 != 0) {
|
||||
if (chunks.is_empty())
|
||||
return context.error("Missing data for padding byte");
|
||||
if (*chunks.data() != 0)
|
||||
return context.error("Padding byte is not 0");
|
||||
chunks = chunks.slice(1);
|
||||
}
|
||||
|
||||
return chunk;
|
||||
}
|
||||
|
||||
// https://developers.google.com/speed/webp/docs/riff_container#simple_file_format_lossy
|
||||
// https://datatracker.ietf.org/doc/html/rfc6386#section-19 "Annex A: Bitstream Syntax"
|
||||
static ErrorOr<VP8Header> decode_webp_chunk_VP8_header(WebPLoadingContext& context, Chunk const& vp8_chunk)
|
||||
{
|
||||
VERIFY(vp8_chunk.type == FourCC("VP8 "));
|
||||
|
||||
if (vp8_chunk.data.size() < 10)
|
||||
return context.error("WebPImageDecoderPlugin: 'VP8 ' chunk too small");
|
||||
|
||||
// FIXME: Eventually, this should probably call into LibVideo/VP8,
|
||||
// and image decoders should move into LibImageDecoders which depends on both LibGfx and LibVideo.
|
||||
// (LibVideo depends on LibGfx, so LibGfx can't depend on LibVideo itself.)
|
||||
|
||||
// https://datatracker.ietf.org/doc/html/rfc6386#section-4 "Overview of Compressed Data Format"
|
||||
// "The decoder is simply presented with a sequence of compressed frames [...]
|
||||
// The first frame presented to the decompressor is [...] a key frame. [...]
|
||||
// [E]very compressed frame has three or more pieces. It begins with an uncompressed data chunk comprising 10 bytes in the case of key frames
|
||||
|
||||
u8 const* data = vp8_chunk.data.data();
|
||||
|
||||
// https://datatracker.ietf.org/doc/html/rfc6386#section-9.1 "Uncompressed Data Chunk"
|
||||
u32 frame_tag = data[0] | (data[1] << 8) | (data[2] << 16);
|
||||
bool is_key_frame = (frame_tag & 1) == 0; // https://www.rfc-editor.org/errata/eid5534
|
||||
u8 version = (frame_tag & 0xe) >> 1;
|
||||
bool show_frame = (frame_tag & 0x10) != 0;
|
||||
u32 size_of_first_partition = frame_tag >> 5;
|
||||
|
||||
if (!is_key_frame)
|
||||
return context.error("WebPImageDecoderPlugin: 'VP8 ' chunk not a key frame");
|
||||
|
||||
// FIXME: !show_frame does not make sense in a webp file either, probably?
|
||||
|
||||
u32 start_code = data[3] | (data[4] << 8) | (data[5] << 16);
|
||||
if (start_code != 0x2a019d) // https://www.rfc-editor.org/errata/eid7370
|
||||
return context.error("WebPImageDecoderPlugin: 'VP8 ' chunk invalid start_code");
|
||||
|
||||
// "The scaling specifications for each dimension are encoded as follows.
|
||||
// 0 | No upscaling (the most common case).
|
||||
// 1 | Upscale by 5/4.
|
||||
// 2 | Upscale by 5/3.
|
||||
// 3 | Upscale by 2."
|
||||
// This is a display-time operation and doesn't affect decoding.
|
||||
u16 width_and_horizontal_scale = data[6] | (data[7] << 8);
|
||||
u16 width = width_and_horizontal_scale & 0x3fff;
|
||||
u8 horizontal_scale = width_and_horizontal_scale >> 14;
|
||||
|
||||
u16 heigth_and_vertical_scale = data[8] | (data[9] << 8);
|
||||
u16 height = heigth_and_vertical_scale & 0x3fff;
|
||||
u8 vertical_scale = heigth_and_vertical_scale >> 14;
|
||||
|
||||
dbgln_if(WEBP_DEBUG, "version {}, show_frame {}, size_of_first_partition {}, width {}, horizontal_scale {}, height {}, vertical_scale {}",
|
||||
version, show_frame, size_of_first_partition, width, horizontal_scale, height, vertical_scale);
|
||||
|
||||
return VP8Header { version, show_frame, size_of_first_partition, width, horizontal_scale, height, vertical_scale };
|
||||
}
|
||||
|
||||
// https://developers.google.com/speed/webp/docs/riff_container#simple_file_format_lossless
|
||||
// https://developers.google.com/speed/webp/docs/webp_lossless_bitstream_specification#7_overall_structure_of_the_format
|
||||
static ErrorOr<VP8LHeader> decode_webp_chunk_VP8L_header(WebPLoadingContext& context, Chunk const& vp8l_chunk)
|
||||
{
|
||||
VERIFY(vp8l_chunk.type == FourCC("VP8L"));
|
||||
|
||||
// https://developers.google.com/speed/webp/docs/webp_lossless_bitstream_specification#3_riff_header
|
||||
if (vp8l_chunk.data.size() < 5)
|
||||
return context.error("WebPImageDecoderPlugin: VP8L chunk too small");
|
||||
|
||||
u8 const* data = vp8l_chunk.data.data();
|
||||
u8 signature = data[0];
|
||||
if (signature != 0x2f)
|
||||
return context.error("WebPImageDecoderPlugin: VP8L chunk invalid signature");
|
||||
|
||||
// 14 bits width-1, 14 bits height-1, 1 bit alpha hint, 3 bit version_number.
|
||||
u16 width = (data[1] | ((data[2] & 0x3f) << 8)) + 1;
|
||||
u16 height = ((data[2] >> 6) | (data[3] << 2) | ((data[4] & 0xf) << 12)) + 1;
|
||||
bool is_alpha_used = (data[4] & 0x10) != 0;
|
||||
u8 version_number = (data[4] & 0xe0) >> 5;
|
||||
|
||||
dbgln_if(WEBP_DEBUG, "width {}, height {}, is_alpha_used {}, version_number {}",
|
||||
width, height, is_alpha_used, version_number);
|
||||
|
||||
// "The version_number is a 3 bit code that must be set to 0. Any other value should be treated as an error. [AMENDED]"
|
||||
if (version_number != 0)
|
||||
return context.error("WebPImageDecoderPlugin: VP8L chunk invalid version_number");
|
||||
|
||||
return VP8LHeader { width, height, is_alpha_used };
|
||||
}
|
||||
|
||||
static ErrorOr<VP8XHeader> decode_webp_chunk_VP8X(WebPLoadingContext& context, Chunk const& vp8x_chunk)
|
||||
{
|
||||
VERIFY(vp8x_chunk.type == FourCC("VP8X"));
|
||||
|
||||
// The VP8X chunk is documented at "Extended WebP file header:" at the end of
|
||||
// https://developers.google.com/speed/webp/docs/riff_container#extended_file_format
|
||||
if (vp8x_chunk.data.size() < 10)
|
||||
return context.error("WebPImageDecoderPlugin: VP8X chunk too small");
|
||||
|
||||
u8 const* data = vp8x_chunk.data.data();
|
||||
|
||||
// 1 byte flags
|
||||
// "Reserved (Rsv): 2 bits MUST be 0. Readers MUST ignore this field.
|
||||
// ICC profile (I): 1 bit Set if the file contains an ICC profile.
|
||||
// Alpha (L): 1 bit Set if any of the frames of the image contain transparency information ("alpha").
|
||||
// Exif metadata (E): 1 bit Set if the file contains Exif metadata.
|
||||
// XMP metadata (X): 1 bit Set if the file contains XMP metadata.
|
||||
// Animation (A): 1 bit Set if this is an animated image. Data in 'ANIM' and 'ANMF' chunks should be used to control the animation.
|
||||
// Reserved (R): 1 bit MUST be 0. Readers MUST ignore this field."
|
||||
u8 flags = data[0];
|
||||
bool has_icc = flags & 0x20;
|
||||
bool has_alpha = flags & 0x10;
|
||||
bool has_exif = flags & 0x8;
|
||||
bool has_xmp = flags & 0x4;
|
||||
bool has_animation = flags & 0x2;
|
||||
|
||||
// 3 bytes reserved
|
||||
// 3 bytes width minus one
|
||||
u32 width = (data[4] | (data[5] << 8) | (data[6] << 16)) + 1;
|
||||
|
||||
// 3 bytes height minus one
|
||||
u32 height = (data[7] | (data[8] << 8) | (data[9] << 16)) + 1;
|
||||
|
||||
dbgln_if(WEBP_DEBUG, "flags 0x{:x} --{}{}{}{}{}{}, width {}, height {}",
|
||||
flags,
|
||||
has_icc ? " icc" : "",
|
||||
has_alpha ? " alpha" : "",
|
||||
has_exif ? " exif" : "",
|
||||
has_xmp ? " xmp" : "",
|
||||
has_animation ? " anim" : "",
|
||||
(flags & 0x3e) == 0 ? " none" : "",
|
||||
width, height);
|
||||
|
||||
return VP8XHeader { has_icc, has_alpha, has_exif, has_xmp, has_animation, width, height };
|
||||
}
|
||||
|
||||
// https://developers.google.com/speed/webp/docs/riff_container#animation
|
||||
static ErrorOr<ANIMChunk> decode_webp_chunk_ANIM(WebPLoadingContext& context, Chunk const& anim_chunk)
|
||||
{
|
||||
VERIFY(anim_chunk.type == FourCC("ANIM"));
|
||||
if (anim_chunk.data.size() < 6)
|
||||
return context.error("WebPImageDecoderPlugin: ANIM chunk too small");
|
||||
|
||||
u8 const* data = anim_chunk.data.data();
|
||||
u32 background_color = (u32)data[0] | ((u32)data[1] << 8) | ((u32)data[2] << 16) | ((u32)data[3] << 24);
|
||||
u16 loop_count = data[4] | (data[5] << 8);
|
||||
|
||||
return ANIMChunk { background_color, loop_count };
|
||||
}
|
||||
|
||||
// https://developers.google.com/speed/webp/docs/riff_container#extended_file_format
|
||||
static ErrorOr<void> decode_webp_extended(WebPLoadingContext& context, ReadonlyBytes chunks)
|
||||
{
|
||||
VERIFY(context.first_chunk->type == FourCC("VP8X"));
|
||||
|
||||
// FIXME: This isn't quite to spec, which says
|
||||
// "All chunks SHOULD be placed in the same order as listed above.
|
||||
// If a chunk appears in the wrong place, the file is invalid, but readers MAY parse the file, ignoring the chunks that are out of order."
|
||||
auto store = [](auto& field, Chunk const& chunk) {
|
||||
if (!field.has_value())
|
||||
field = chunk;
|
||||
};
|
||||
while (!chunks.is_empty()) {
|
||||
auto chunk = TRY(decode_webp_advance_chunk(context, chunks));
|
||||
|
||||
if (chunk.type == FourCC("ICCP"))
|
||||
store(context.iccp_chunk, chunk);
|
||||
else if (chunk.type == FourCC("ALPH"))
|
||||
store(context.alpha_chunk, chunk);
|
||||
else if (chunk.type == FourCC("ANIM"))
|
||||
store(context.animation_header_chunk, chunk);
|
||||
else if (chunk.type == FourCC("ANMF"))
|
||||
TRY(context.animation_frame_chunks.try_append(chunk));
|
||||
else if (chunk.type == FourCC("EXIF"))
|
||||
store(context.exif_chunk, chunk);
|
||||
else if (chunk.type == FourCC("XMP "))
|
||||
store(context.xmp_chunk, chunk);
|
||||
else if (chunk.type == FourCC("VP8 ") || chunk.type == FourCC("VP8L"))
|
||||
store(context.image_data_chunk, chunk);
|
||||
}
|
||||
|
||||
// Validate chunks.
|
||||
|
||||
// https://developers.google.com/speed/webp/docs/riff_container#animation
|
||||
// "ANIM Chunk: [...] This chunk MUST appear if the Animation flag in the VP8X chunk is set. If the Animation flag is not set and this chunk is present, it MUST be ignored."
|
||||
if (context.vp8x_header.has_animation && !context.animation_header_chunk.has_value())
|
||||
return context.error("WebPImageDecoderPlugin: Header claims animation, but no ANIM chunk");
|
||||
if (!context.vp8x_header.has_animation && context.animation_header_chunk.has_value()) {
|
||||
dbgln_if(WEBP_DEBUG, "WebPImageDecoderPlugin: Header claims no animation, but ANIM chunk present. Ignoring ANIM chunk.");
|
||||
context.animation_header_chunk.clear();
|
||||
}
|
||||
|
||||
// "ANMF Chunk: [...] If the Animation flag is not set, then this chunk SHOULD NOT be present."
|
||||
if (!context.vp8x_header.has_animation && context.animation_header_chunk.has_value()) {
|
||||
dbgln_if(WEBP_DEBUG, "WebPImageDecoderPlugin: Header claims no animation, but ANMF chunks present. Ignoring ANMF chunks.");
|
||||
context.animation_frame_chunks.clear();
|
||||
}
|
||||
|
||||
// https://developers.google.com/speed/webp/docs/riff_container#alpha
|
||||
// "A frame containing a 'VP8L' chunk SHOULD NOT contain this chunk."
|
||||
// FIXME: Also check in ANMF chunks.
|
||||
if (context.alpha_chunk.has_value() && context.image_data_chunk.has_value() && context.image_data_chunk->type == FourCC("VP8L")) {
|
||||
dbgln_if(WEBP_DEBUG, "WebPImageDecoderPlugin: VP8L frames should not have ALPH chunks. Ignoring ALPH chunk.");
|
||||
context.alpha_chunk.clear();
|
||||
}
|
||||
|
||||
// https://developers.google.com/speed/webp/docs/riff_container#color_profile
|
||||
// "This chunk MUST appear before the image data."
|
||||
// FIXME: Doesn't check animated files.
|
||||
if (context.iccp_chunk.has_value() && context.image_data_chunk.has_value() && context.iccp_chunk->data.data() > context.image_data_chunk->data.data())
|
||||
return context.error("WebPImageDecoderPlugin: ICCP chunk is after image data");
|
||||
|
||||
context.state = WebPLoadingContext::State::ChunksDecoded;
|
||||
return {};
|
||||
}
|
||||
|
||||
static ErrorOr<void> read_webp_first_chunk(WebPLoadingContext& context)
|
||||
{
|
||||
if (context.state >= WebPLoadingContext::State::FirstChunkRead)
|
||||
return {};
|
||||
|
||||
if (context.state < WebPLoadingContext::HeaderDecoded)
|
||||
TRY(decode_webp_header(context));
|
||||
|
||||
context.chunks_cursor = context.data.slice(sizeof(WebPFileHeader));
|
||||
auto first_chunk = TRY(decode_webp_advance_chunk(context, context.chunks_cursor));
|
||||
|
||||
if (first_chunk.type != FourCC("VP8 ") && first_chunk.type != FourCC("VP8L") && first_chunk.type != FourCC("VP8X"))
|
||||
return context.error("WebPImageDecoderPlugin: Invalid first chunk type");
|
||||
|
||||
context.first_chunk = first_chunk;
|
||||
context.state = WebPLoadingContext::State::FirstChunkRead;
|
||||
|
||||
if (first_chunk.type == FourCC("VP8 ") || first_chunk.type == FourCC("VP8L"))
|
||||
context.image_data_chunk = first_chunk;
|
||||
|
||||
return {};
|
||||
}
|
||||
|
||||
static ErrorOr<void> decode_webp_first_chunk(WebPLoadingContext& context)
|
||||
{
|
||||
if (context.state >= WebPLoadingContext::State::FirstChunkDecoded)
|
||||
return {};
|
||||
|
||||
if (context.state < WebPLoadingContext::FirstChunkRead)
|
||||
TRY(read_webp_first_chunk(context));
|
||||
|
||||
if (context.first_chunk->type == FourCC("VP8 ")) {
|
||||
context.vp8_header = TRY(decode_webp_chunk_VP8_header(context, context.first_chunk.value()));
|
||||
context.size = IntSize { context.vp8_header.width, context.vp8_header.height };
|
||||
context.state = WebPLoadingContext::State::FirstChunkDecoded;
|
||||
return {};
|
||||
}
|
||||
if (context.first_chunk->type == FourCC("VP8L")) {
|
||||
context.vp8l_header = TRY(decode_webp_chunk_VP8L_header(context, context.first_chunk.value()));
|
||||
context.size = IntSize { context.vp8l_header.width, context.vp8l_header.height };
|
||||
context.state = WebPLoadingContext::State::FirstChunkDecoded;
|
||||
return {};
|
||||
}
|
||||
VERIFY(context.first_chunk->type == FourCC("VP8X"));
|
||||
context.vp8x_header = TRY(decode_webp_chunk_VP8X(context, context.first_chunk.value()));
|
||||
context.size = IntSize { context.vp8x_header.width, context.vp8x_header.height };
|
||||
context.state = WebPLoadingContext::State::FirstChunkDecoded;
|
||||
return {};
|
||||
}
|
||||
|
||||
static ErrorOr<void> decode_webp_chunks(WebPLoadingContext& context)
|
||||
{
|
||||
if (context.state >= WebPLoadingContext::State::ChunksDecoded)
|
||||
return {};
|
||||
|
||||
if (context.state < WebPLoadingContext::FirstChunkDecoded)
|
||||
TRY(decode_webp_first_chunk(context));
|
||||
|
||||
if (context.first_chunk->type == FourCC("VP8X"))
|
||||
return decode_webp_extended(context, context.chunks_cursor);
|
||||
|
||||
context.state = WebPLoadingContext::State::ChunksDecoded;
|
||||
return {};
|
||||
}
|
||||
|
||||
WebPImageDecoderPlugin::WebPImageDecoderPlugin(ReadonlyBytes data, OwnPtr<WebPLoadingContext> context)
|
||||
: m_context(move(context))
|
||||
{
|
||||
m_context->data = data;
|
||||
}
|
||||
|
||||
WebPImageDecoderPlugin::~WebPImageDecoderPlugin() = default;
|
||||
|
||||
IntSize WebPImageDecoderPlugin::size()
|
||||
{
|
||||
if (m_context->state == WebPLoadingContext::State::Error)
|
||||
return {};
|
||||
|
||||
if (m_context->state < WebPLoadingContext::State::FirstChunkDecoded) {
|
||||
if (decode_webp_first_chunk(*m_context).is_error())
|
||||
return {};
|
||||
}
|
||||
|
||||
return m_context->size.value();
|
||||
}
|
||||
|
||||
void WebPImageDecoderPlugin::set_volatile()
|
||||
{
|
||||
if (m_context->bitmap)
|
||||
m_context->bitmap->set_volatile();
|
||||
}
|
||||
|
||||
bool WebPImageDecoderPlugin::set_nonvolatile(bool& was_purged)
|
||||
{
|
||||
if (!m_context->bitmap)
|
||||
return false;
|
||||
return m_context->bitmap->set_nonvolatile(was_purged);
|
||||
}
|
||||
|
||||
bool WebPImageDecoderPlugin::initialize()
|
||||
{
|
||||
return !decode_webp_header(*m_context).is_error();
|
||||
}
|
||||
|
||||
bool WebPImageDecoderPlugin::sniff(ReadonlyBytes data)
|
||||
{
|
||||
WebPLoadingContext context;
|
||||
context.data = data;
|
||||
return !decode_webp_header(context).is_error();
|
||||
}
|
||||
|
||||
ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> WebPImageDecoderPlugin::create(ReadonlyBytes data)
|
||||
{
|
||||
auto context = TRY(try_make<WebPLoadingContext>());
|
||||
return adopt_nonnull_own_or_enomem(new (nothrow) WebPImageDecoderPlugin(data, move(context)));
|
||||
}
|
||||
|
||||
bool WebPImageDecoderPlugin::is_animated()
|
||||
{
|
||||
if (m_context->state == WebPLoadingContext::State::Error)
|
||||
return false;
|
||||
|
||||
if (m_context->state < WebPLoadingContext::State::FirstChunkDecoded) {
|
||||
if (decode_webp_first_chunk(*m_context).is_error())
|
||||
return false;
|
||||
}
|
||||
|
||||
return m_context->first_chunk->type == FourCC("VP8X") && m_context->vp8x_header.has_animation;
|
||||
}
|
||||
|
||||
size_t WebPImageDecoderPlugin::loop_count()
|
||||
{
|
||||
if (!is_animated())
|
||||
return 0;
|
||||
|
||||
if (m_context->state < WebPLoadingContext::State::ChunksDecoded) {
|
||||
if (decode_webp_chunks(*m_context).is_error())
|
||||
return 0;
|
||||
}
|
||||
|
||||
auto anim_or_error = decode_webp_chunk_ANIM(*m_context, m_context->animation_header_chunk.value());
|
||||
if (decode_webp_chunks(*m_context).is_error())
|
||||
return 0;
|
||||
|
||||
return anim_or_error.value().loop_count;
|
||||
}
|
||||
|
||||
size_t WebPImageDecoderPlugin::frame_count()
|
||||
{
|
||||
if (!is_animated())
|
||||
return 1;
|
||||
|
||||
if (m_context->state < WebPLoadingContext::State::ChunksDecoded) {
|
||||
if (decode_webp_chunks(*m_context).is_error())
|
||||
return 1;
|
||||
}
|
||||
|
||||
return m_context->animation_frame_chunks.size();
|
||||
}
|
||||
|
||||
ErrorOr<ImageFrameDescriptor> WebPImageDecoderPlugin::frame(size_t index)
|
||||
{
|
||||
if (index >= frame_count())
|
||||
return Error::from_string_literal("WebPImageDecoderPlugin: Invalid frame index");
|
||||
|
||||
return Error::from_string_literal("WebPImageDecoderPlugin: decoding not yet implemented");
|
||||
}
|
||||
|
||||
ErrorOr<Optional<ReadonlyBytes>> WebPImageDecoderPlugin::icc_data()
|
||||
{
|
||||
TRY(decode_webp_chunks(*m_context));
|
||||
|
||||
// FIXME: "If this chunk is not present, sRGB SHOULD be assumed."
|
||||
|
||||
return m_context->iccp_chunk.map([](auto iccp_chunk) { return iccp_chunk.data; });
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
template<>
|
||||
struct AK::Formatter<Gfx::FourCC> : StandardFormatter {
|
||||
ErrorOr<void> format(FormatBuilder& builder, Gfx::FourCC const& four_cc)
|
||||
{
|
||||
TRY(builder.put_padding('\'', 1));
|
||||
TRY(builder.put_padding(four_cc.cc[0], 1));
|
||||
TRY(builder.put_padding(four_cc.cc[1], 1));
|
||||
TRY(builder.put_padding(four_cc.cc[2], 1));
|
||||
TRY(builder.put_padding(four_cc.cc[3], 1));
|
||||
TRY(builder.put_padding('\'', 1));
|
||||
return {};
|
||||
}
|
||||
};
|
||||
38
Userland/Libraries/LibGfx/ImageFormats/WebPLoader.h
Normal file
38
Userland/Libraries/LibGfx/ImageFormats/WebPLoader.h
Normal file
|
|
@ -0,0 +1,38 @@
|
|||
/*
|
||||
* Copyright (c) 2023, Nico Weber <thakis@chromium.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <LibGfx/ImageFormats/ImageDecoder.h>
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
struct WebPLoadingContext;
|
||||
|
||||
class WebPImageDecoderPlugin final : public ImageDecoderPlugin {
|
||||
public:
|
||||
static bool sniff(ReadonlyBytes);
|
||||
static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);
|
||||
|
||||
virtual ~WebPImageDecoderPlugin() override;
|
||||
|
||||
virtual IntSize size() override;
|
||||
virtual void set_volatile() override;
|
||||
[[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) override;
|
||||
virtual bool initialize() override;
|
||||
virtual bool is_animated() override;
|
||||
virtual size_t loop_count() override;
|
||||
virtual size_t frame_count() override;
|
||||
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
|
||||
virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
|
||||
|
||||
private:
|
||||
WebPImageDecoderPlugin(ReadonlyBytes, OwnPtr<WebPLoadingContext>);
|
||||
|
||||
OwnPtr<WebPLoadingContext> m_context;
|
||||
};
|
||||
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue