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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_MOJO_CLIENTS_MOJO_VIDEO_DECODER_H_
#define MEDIA_MOJO_CLIENTS_MOJO_VIDEO_DECODER_H_
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "media/base/video_decoder.h"
#include "media/base/video_frame.h"
#include "media/mojo/clients/mojo_media_log_service.h"
#include "media/mojo/interfaces/video_decoder.mojom.h"
#include "media/video/video_decode_accelerator.h"
#include "mojo/public/cpp/bindings/associated_binding.h"
#include "ui/gfx/color_space.h"
namespace base {
class SingleThreadTaskRunner;
}
namespace media {
class GpuVideoAcceleratorFactories;
class MediaLog;
class MojoDecoderBufferWriter;
class MojoVideoFrameHandleReleaser;
// A VideoDecoder, for use in the renderer process, that proxies to a
// mojom::VideoDecoder. It is assumed that the other side will be implemented by
// MojoVideoDecoderService, running in the GPU process, and that the remote
// decoder will be hardware accelerated.
class MojoVideoDecoder final : public VideoDecoder,
public mojom::VideoDecoderClient {
public:
MojoVideoDecoder(scoped_refptr<base::SingleThreadTaskRunner> task_runner,
GpuVideoAcceleratorFactories* gpu_factories,
MediaLog* media_log,
mojom::VideoDecoderPtr remote_decoder,
const RequestOverlayInfoCB& request_overlay_info_cb,
const gfx::ColorSpace& target_color_space);
~MojoVideoDecoder() final;
// VideoDecoder implementation.
std::string GetDisplayName() const final;
bool IsPlatformDecoder() const final;
void Initialize(
const VideoDecoderConfig& config,
bool low_delay,
CdmContext* cdm_context,
const InitCB& init_cb,
const OutputCB& output_cb,
const WaitingForDecryptionKeyCB& waiting_for_decryption_key_cb) final;
void Decode(scoped_refptr<DecoderBuffer> buffer,
const DecodeCB& decode_cb) final;
void Reset(const base::Closure& closure) final;
bool NeedsBitstreamConversion() const final;
bool CanReadWithoutStalling() const final;
int GetMaxDecodeRequests() const final;
// mojom::VideoDecoderClient implementation.
void OnVideoFrameDecoded(
const scoped_refptr<VideoFrame>& frame,
bool can_read_without_stalling,
const base::Optional<base::UnguessableToken>& release_token) final;
void RequestOverlayInfo(bool restart_for_transitions) final;
void set_writer_capacity_for_testing(uint32_t capacity) {
writer_capacity_ = capacity;
}
private:
void OnInitializeDone(bool status,
bool needs_bitstream_conversion,
int32_t max_decode_requests);
void OnDecodeDone(uint64_t decode_id, DecodeStatus status);
void OnResetDone();
void BindRemoteDecoder();
// Forwards |overlay_info| to the remote decoder.
void OnOverlayInfoChanged(const OverlayInfo& overlay_info);
// Cleans up callbacks and blocks future calls.
void Stop();
// Task runner that the decoder runs on (media thread).
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
// Used to pass the remote decoder from the constructor (on the main thread)
// to Initialize() (on the media thread).
mojom::VideoDecoderPtrInfo remote_decoder_info_;
// Manages VideoFrame destruction callbacks.
scoped_refptr<MojoVideoFrameHandleReleaser> mojo_video_frame_handle_releaser_;
GpuVideoAcceleratorFactories* gpu_factories_ = nullptr;
InitCB init_cb_;
OutputCB output_cb_;
uint64_t decode_counter_ = 0;
std::map<uint64_t, DecodeCB> pending_decodes_;
base::Closure reset_cb_;
mojom::VideoDecoderPtr remote_decoder_;
std::unique_ptr<MojoDecoderBufferWriter> mojo_decoder_buffer_writer_;
uint32_t writer_capacity_ = 0;
bool remote_decoder_bound_ = false;
bool has_connection_error_ = false;
mojo::AssociatedBinding<mojom::VideoDecoderClient> client_binding_;
MojoMediaLogService media_log_service_;
mojo::AssociatedBinding<mojom::MediaLog> media_log_binding_;
RequestOverlayInfoCB request_overlay_info_cb_;
bool overlay_info_requested_ = false;
gfx::ColorSpace target_color_space_;
bool initialized_ = false;
bool needs_bitstream_conversion_ = false;
bool can_read_without_stalling_ = true;
int32_t max_decode_requests_ = 1;
base::WeakPtr<MojoVideoDecoder> weak_this_;
base::WeakPtrFactory<MojoVideoDecoder> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(MojoVideoDecoder);
};
} // namespace media
#endif // MEDIA_MOJO_CLIENTS_MOJO_VIDEO_DECODER_H_