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cffc8678d8
This introduces a new API in ImageDecoderPlugins that allow an image decoder to return a CICP struct. Also, we use this API in ImageDecoder::color_space() to create a color space corresponding to these CICP.
125 lines
3.3 KiB
C++
125 lines
3.3 KiB
C++
/*
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* Copyright (c) 2024, Lucas Chollet <lucas.chollet@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/ByteBuffer.h>
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#include <LibGfx/ColorSpace.h>
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#include <LibIPC/Decoder.h>
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#include <LibIPC/Encoder.h>
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#include <core/SkColorSpace.h>
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#include <core/SkData.h>
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namespace Gfx {
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namespace Details {
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struct ColorSpaceImpl {
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sk_sp<SkColorSpace> color_space;
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};
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}
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ColorSpace::ColorSpace()
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: m_color_space(make<Details::ColorSpaceImpl>())
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{
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}
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ColorSpace::ColorSpace(ColorSpace const& other)
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: m_color_space(make<Details::ColorSpaceImpl>(other.m_color_space->color_space))
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{
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}
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ColorSpace& ColorSpace::operator=(ColorSpace const& other)
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{
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m_color_space = make<Details::ColorSpaceImpl>(other.m_color_space->color_space);
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return *this;
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}
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ColorSpace::ColorSpace(ColorSpace&& other) = default;
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ColorSpace& ColorSpace::operator=(ColorSpace&&) = default;
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ColorSpace::~ColorSpace() = default;
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ColorSpace::ColorSpace(NonnullOwnPtr<Details::ColorSpaceImpl>&& color_space)
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: m_color_space(move(color_space))
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{
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}
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ErrorOr<ColorSpace> ColorSpace::from_cicp(Media::CodingIndependentCodePoints cicp)
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{
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// FIXME: Bail on invalid input
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skcms_Matrix3x3 gamut = SkNamedGamut::kSRGB;
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switch (cicp.color_primaries()) {
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case Media::ColorPrimaries::BT709:
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gamut = SkNamedGamut::kSRGB;
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break;
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case Media::ColorPrimaries::SMPTE432:
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gamut = SkNamedGamut::kDisplayP3;
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break;
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default:
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return Error::from_string_literal("FIXME: Unsupported color primaries");
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}
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skcms_TransferFunction transfer_function = SkNamedTransferFn::kSRGB;
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switch (cicp.transfer_characteristics()) {
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case Media::TransferCharacteristics::SRGB:
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transfer_function = SkNamedTransferFn::kSRGB;
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break;
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default:
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return Error::from_string_literal("FIXME: Unsupported transfer function");
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}
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return ColorSpace { make<Details::ColorSpaceImpl>(SkColorSpace::MakeRGB(transfer_function, gamut)) };
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}
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ErrorOr<ColorSpace> ColorSpace::load_from_icc_bytes(ReadonlyBytes icc_bytes)
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{
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if (icc_bytes.size() != 0) {
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skcms_ICCProfile icc_profile {};
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if (!skcms_Parse(icc_bytes.data(), icc_bytes.size(), &icc_profile))
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return Error::from_string_literal("Failed to parse the ICC profile");
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return ColorSpace { make<Details::ColorSpaceImpl>(SkColorSpace::Make(icc_profile)) };
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}
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return ColorSpace {};
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}
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template<>
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sk_sp<SkColorSpace>& ColorSpace::color_space()
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{
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return m_color_space->color_space;
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}
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}
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namespace IPC {
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template<>
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ErrorOr<void> encode(Encoder& encoder, Gfx::ColorSpace const& color_space)
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{
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if (!color_space.m_color_space->color_space) {
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TRY(encoder.encode<u64>(0));
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return {};
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}
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auto serialized = color_space.m_color_space->color_space->serialize();
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TRY(encoder.encode<u64>(serialized->size()));
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TRY(encoder.append(serialized->bytes(), serialized->size()));
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return {};
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}
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template<>
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ErrorOr<Gfx::ColorSpace> decode(Decoder& decoder)
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{
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auto size = TRY(decoder.decode<u64>());
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if (size == 0)
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return Gfx::ColorSpace {};
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auto buffer = TRY(ByteBuffer::create_uninitialized(size));
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TRY(decoder.decode_into(buffer.bytes()));
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auto color_space = SkColorSpace::Deserialize(buffer.data(), buffer.size());
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return Gfx::ColorSpace { make<::Gfx::Details::ColorSpaceImpl>(move(color_space)) };
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}
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}
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