chromium/chrome/browser/image_decoder/image_decoder.cc

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/image_decoder/image_decoder.h"

#include <utility>

#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/single_thread_task_runner.h"
#include "build/build_config.h"
#include "ipc/ipc_channel.h"
#include "services/data_decoder/public/cpp/data_decoder.h"
#include "services/data_decoder/public/cpp/decode_image.h"
#include "third_party/skia/include/core/SkBitmap.h"

namespace {

const int64_t kMaxImageSizeInBytes = …;

// Note that this is always called on the thread which initiated the
// corresponding data_decoder::DecodeImage request.
void OnDecodeImageDone(
    base::OnceCallback<void(int)> fail_callback,
    base::OnceCallback<void(const SkBitmap&, int)> success_callback,
    int request_id,
    const SkBitmap& image) { … }

void RunDecodeCallbackOnTaskRunner(
    data_decoder::DecodeImageCallback callback,
    scoped_refptr<base::SequencedTaskRunner> task_runner,
    const SkBitmap& image) { … }

template <typename ImageDataType>
void DecodeImage(ImageDataType image_data,
                 data_decoder::mojom::ImageCodec codec,
                 bool shrink_to_fit,
                 const gfx::Size& desired_image_frame_size,
                 data_decoder::DecodeImageCallback callback,
                 scoped_refptr<base::SequencedTaskRunner> callback_task_runner,
                 data_decoder::DataDecoder* data_decoder) { … }

}  // namespace

ImageDecoder::ImageRequest::ImageRequest()
    : … { … }

ImageDecoder::ImageRequest::ImageRequest(
    const scoped_refptr<base::SequencedTaskRunner>& task_runner)
    : … { … }

ImageDecoder::ImageRequest::ImageRequest(
    data_decoder::DataDecoder* data_decoder)
    : … { … }

ImageDecoder::ImageRequest::~ImageRequest() { … }

// static
ImageDecoder* ImageDecoder::GetInstance() { … }

// static
template <typename ImageDataType>
void ImageDecoder::Start(ImageRequest* image_request,
                         ImageDataType image_data) { … }

template void ImageDecoder::Start(ImageRequest*, std::vector<uint8_t>);
template void ImageDecoder::Start(ImageRequest*, std::string);

// static
template <typename ImageDataType>
void ImageDecoder::StartWithOptions(ImageRequest* image_request,
                                    ImageDataType image_data,
                                    ImageCodec image_codec,
                                    bool shrink_to_fit,
                                    const gfx::Size& desired_image_frame_size) { … }

template void ImageDecoder::StartWithOptions(ImageRequest*,
                                             std::vector<uint8_t>,
                                             ImageCodec,
                                             bool,
                                             const gfx::Size&);
template void ImageDecoder::StartWithOptions(ImageRequest*,
                                             std::string,
                                             ImageCodec,
                                             bool,
                                             const gfx::Size&);

ImageDecoder::ImageDecoder() : … { … }

template <typename ImageDataType>
void ImageDecoder::StartWithOptionsImpl(
    ImageRequest* image_request,
    ImageDataType image_data,
    ImageCodec image_codec,
    bool shrink_to_fit,
    const gfx::Size& desired_image_frame_size) { … }

template void ImageDecoder::StartWithOptionsImpl(ImageRequest*,
                                                 std::vector<uint8_t>,
                                                 ImageCodec,
                                                 bool,
                                                 const gfx::Size&);
template void ImageDecoder::StartWithOptionsImpl(ImageRequest*,
                                                 std::string,
                                                 ImageCodec,
                                                 bool,
                                                 const gfx::Size&);

// static
void ImageDecoder::Cancel(ImageRequest* image_request) { … }

void ImageDecoder::CancelImpl(ImageRequest* image_request) { … }

void ImageDecoder::OnDecodeImageSucceeded(const SkBitmap& decoded_image,
                                          int request_id) { … }

void ImageDecoder::OnDecodeImageFailed(int request_id) { … }