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LibGfx/JPEGXL: Handle parsing BlendingInfo
for extra channels
Extra channels have more parameters than basic one. This patch allows us to read all these parameters.
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@ -468,7 +468,7 @@ struct BlendingInfo {
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BlendMode mode {};
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u8 alpha_channel {};
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u8 clamp {};
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bool clamp { false };
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u8 source {};
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};
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@ -481,7 +481,14 @@ static ErrorOr<BlendingInfo> read_blending_info(LittleEndianInputBitStream& stre
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bool const extra = metadata.num_extra_channels > 0;
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if (extra) {
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TODO();
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auto const blend_or_mul_add = blending_info.mode == BlendingInfo::BlendMode::kBlend
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|| blending_info.mode == BlendingInfo::BlendMode::kMulAdd;
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if (blend_or_mul_add)
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blending_info.alpha_channel = U32(0, 1, 2, 3 + TRY(stream.read_bits(3)));
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if (blend_or_mul_add || blending_info.mode == BlendingInfo::BlendMode::kMul)
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blending_info.clamp = TRY(stream.read_bit());
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}
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if (blending_info.mode != BlendingInfo::BlendMode::kReplace
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