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https://github.com/RGBCube/serenity
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f3ff9c26bc
This enum used to store very precise state about the decoding process, let's simplify that by only including two steps: HeaderDecoder and BitmapDecoded.
51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
/*
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* Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
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* Copyright (c) 2022, 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 "PPMLoader.h"
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#include "PortableImageLoaderCommon.h"
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namespace Gfx {
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ErrorOr<void> read_image_data(PPMLoadingContext& context)
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{
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auto const context_size = context.width * context.height;
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TRY(create_bitmap(context));
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auto& stream = *context.stream;
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if (context.type == PPMLoadingContext::Type::ASCII) {
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for (u64 i = 0; i < context_size; ++i) {
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auto const red = TRY(read_number(stream));
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TRY(read_whitespace(context));
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auto const green = TRY(read_number(stream));
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TRY(read_whitespace(context));
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auto const blue = TRY(read_number(stream));
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TRY(read_whitespace(context));
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Color color { static_cast<u8>(red), static_cast<u8>(green), static_cast<u8>(blue) };
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if (context.format_details.max_val < 255)
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color = adjust_color(context.format_details.max_val, color);
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context.bitmap->set_pixel(i % context.width, i / context.width, color);
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}
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} else if (context.type == PPMLoadingContext::Type::RAWBITS) {
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for (u64 i = 0; i < context_size; ++i) {
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Array<u8, 3> pixel;
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Bytes buffer { pixel };
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TRY(stream.read_until_filled(buffer));
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context.bitmap->set_pixel(i % context.width, i / context.width, { pixel[0], pixel[1], pixel[2] });
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}
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}
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context.state = PPMLoadingContext::State::BitmapDecoded;
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return {};
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}
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}
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