chromium/third_party/blink/renderer/modules/webcodecs/image_decoder_core.cc

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/modules/webcodecs/image_decoder_core.h"

#include "base/logging.h"
#include "base/metrics/histogram_functions.h"
#include "base/numerics/safe_conversions.h"
#include "base/time/time.h"
#include "media/base/timestamp_constants.h"
#include "media/base/video_frame.h"
#include "media/base/video_util.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/renderer/platform/graphics/bitmap_image_metrics.h"
#include "third_party/blink/renderer/platform/graphics/video_frame_image_util.h"
#include "third_party/blink/renderer/platform/image-decoders/segment_reader.h"
#include "third_party/blink/renderer/platform/wtf/shared_buffer.h"
#include "third_party/skia/include/core/SkColorSpace.h"
#include "third_party/skia/include/core/SkImage.h"
#include "third_party/skia/include/core/SkYUVAPixmaps.h"

namespace blink {

namespace {

media::VideoPixelFormat YUVSubsamplingToMediaPixelFormat(
    cc::YUVSubsampling sampling,
    int depth) { … }

gfx::ColorSpace YUVColorSpaceToGfxColorSpace(
    SkYUVColorSpace yuv_cs,
    gfx::ColorSpace::PrimaryID primary_id,
    gfx::ColorSpace::TransferID transfer_id) { … }

}  // namespace

ImageDecoderCore::ImageDecoderCore(
    String mime_type,
    scoped_refptr<SegmentReader> data,
    bool data_complete,
    ColorBehavior color_behavior,
    const SkISize& desired_size,
    ImageDecoder::AnimationOption animation_option)
    : … { … }

ImageDecoderCore::~ImageDecoderCore() = default;

ImageDecoderCore::ImageMetadata ImageDecoderCore::DecodeMetadata() { … }

std::unique_ptr<ImageDecoderCore::ImageDecodeResult> ImageDecoderCore::Decode(
    uint32_t frame_index,
    bool complete_frames_only,
    const base::AtomicFlag* abort_flag) { … }

void ImageDecoderCore::AppendData(size_t data_size,
                                  std::unique_ptr<uint8_t[]> data,
                                  bool data_complete) { … }

void ImageDecoderCore::Clear() { … }

void ImageDecoderCore::Reinitialize(
    ImageDecoder::AnimationOption animation_option) { … }

bool ImageDecoderCore::FrameIsDecodedAtIndexForTesting(
    uint32_t frame_index) const { … }

void ImageDecoderCore::MaybeDecodeToYuv() { … }

base::TimeDelta ImageDecoderCore::GetTimestampForFrame(uint32_t index) const { … }

}  // namespace blink