chromium/media/cast/test/receiver/video_decoder.cc

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "media/cast/test/receiver/video_decoder.h"

#include <stdint.h>

#include <string_view>
#include <utility>

#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/json/json_reader.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/values.h"
#include "media/base/video_codecs.h"
#include "media/base/video_frame_pool.h"
#include "media/base/video_util.h"
#include "media/cast/cast_environment.h"
#include "media/cast/common/encoded_frame.h"
#include "media/cast/common/openscreen_conversion_helpers.h"
#include "third_party/libvpx/source/libvpx/vpx/vp8dx.h"
#include "third_party/libvpx/source/libvpx/vpx/vpx_decoder.h"
#include "third_party/libyuv/include/libyuv/convert.h"
#include "ui/gfx/geometry/size.h"

namespace media {
namespace cast {

// Base class that handles the common problem of detecting dropped frames, and
// then invoking the Decode() method implemented by the subclasses to convert
// the encoded payload data into a usable video frame.
class VideoDecoder::ImplBase
    : public base::RefCountedThreadSafe<VideoDecoder::ImplBase> { … };

class VideoDecoder::Vp8Impl final : public VideoDecoder::ImplBase { … };

// A fake video decoder that always output 2x2 black frames.
class VideoDecoder::FakeImpl final : public VideoDecoder::ImplBase { … };

VideoDecoder::VideoDecoder(
    const scoped_refptr<CastEnvironment>& cast_environment,
    VideoCodec codec)
    : … { … }

VideoDecoder::~VideoDecoder() = default;

OperationalStatus VideoDecoder::InitializationResult() const { … }

void VideoDecoder::DecodeFrame(std::unique_ptr<EncodedFrame> encoded_frame,
                               const DecodeFrameCallback& callback) { … }

}  // namespace cast
}  // namespace media