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LibGfx: Use ErrorOr<T> for try_create_from_serialized_byte_buffer()

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This commit is contained in:
Andreas Kling 2021-11-06 19:53:32 +01:00
parent 0de33b3d6c
commit 6e255b262f
3 changed files with 10 additions and 15 deletions
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18
Userland/Libraries/LibGfx/Bitmap.cpp
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@ -211,7 +211,7 @@ ErrorOr<NonnullRefPtr<Bitmap>> Bitmap::try_create_with_anonymous_buffer(BitmapFo
/// - palette count
/// - palette data (= palette count * BGRA8888)
/// - image data (= actual size * u8)
RefPtr<Bitmap> Bitmap::try_create_from_serialized_byte_buffer(ByteBuffer&& buffer)
ErrorOr<NonnullRefPtr<Bitmap>> Bitmap::try_create_from_serialized_byte_buffer(ByteBuffer&& buffer)
{
InputMemoryStream stream { buffer };
size_t actual_size;
@ -229,35 +229,31 @@ RefPtr<Bitmap> Bitmap::try_create_from_serialized_byte_buffer(ByteBuffer&& buffe
};
if (!read(actual_size) || !read(width) || !read(height) || !read(scale_factor) || !read(format) || !read(palette_size))
return nullptr;
return Error::from_string_literal("Gfx::Bitmap::try_create_from_serialized_byte_buffer: decode failed"sv);
if (format > BitmapFormat::BGRA8888 || format < BitmapFormat::Indexed1)
return nullptr;
return Error::from_string_literal("Gfx::Bitmap::try_create_from_serialized_byte_buffer: decode failed"sv);
if (!check_size({ width, height }, scale_factor, format, actual_size))
return {};
return Error::from_string_literal("Gfx::Bitmap::try_create_from_serialized_byte_buffer: decode failed"sv);
palette.ensure_capacity(palette_size);
for (size_t i = 0; i < palette_size; ++i) {
if (!read(palette[i]))
return {};
return Error::from_string_literal("Gfx::Bitmap::try_create_from_serialized_byte_buffer: decode failed"sv);
}
if (stream.remaining() < actual_size)
return {};
return Error::from_string_literal("Gfx::Bitmap::try_create_from_serialized_byte_buffer: decode failed"sv);
auto data = stream.bytes().slice(stream.offset(), actual_size);
auto bitmap_or_error = Bitmap::try_create(format, { width, height }, scale_factor);
if (bitmap_or_error.is_error())
return {};
auto bitmap = bitmap_or_error.release_value_but_fixme_should_propagate_errors();
auto bitmap = TRY(Bitmap::try_create(format, { width, height }, scale_factor));
bitmap->m_palette = new RGBA32[palette_size];
memcpy(bitmap->m_palette, palette.data(), palette_size * sizeof(RGBA32));
data.copy_to({ bitmap->scanline(0), bitmap->size_in_bytes() });
return bitmap;
}