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// Copyright 2022 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_GPU_CHROMEOS_OOP_VIDEO_DECODER_H_
#define MEDIA_GPU_CHROMEOS_OOP_VIDEO_DECODER_H_
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "media/base/media_log.h"
#include "media/gpu/chromeos/video_decoder_pipeline.h"
#include "media/mojo/mojom/stable/stable_video_decoder.mojom.h"
#include "mojo/public/cpp/bindings/associated_receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
namespace media {
class MojoDecoderBufferWriter;
// Proxy video decoder that connects with an out-of-process
// video decoder via Mojo. This class should be operated and
// destroyed on |decoder_task_runner_|.
class OOPVideoDecoder : public VideoDecoderMixin,
public stable::mojom::VideoDecoderClient,
public stable::mojom::MediaLog {
public:
OOPVideoDecoder(const OOPVideoDecoder&) = delete;
OOPVideoDecoder& operator=(const OOPVideoDecoder&) = delete;
static std::unique_ptr<VideoDecoderMixin> Create(
mojo::PendingRemote<stable::mojom::StableVideoDecoder>
pending_remote_decoder,
std::unique_ptr<media::MediaLog> media_log,
scoped_refptr<base::SequencedTaskRunner> decoder_task_runner,
base::WeakPtr<VideoDecoderMixin::Client> client);
// VideoDecoderMixin implementation, VideoDecoder part.
void Initialize(const VideoDecoderConfig& config,
bool low_delay,
CdmContext* cdm_context,
InitCB init_cb,
const OutputCB& output_cb,
const WaitingCB& waiting_cb) override;
void Decode(scoped_refptr<DecoderBuffer> buffer, DecodeCB decode_cb) override;
void Reset(base::OnceClosure reset_cb) override;
bool NeedsBitstreamConversion() const override;
bool CanReadWithoutStalling() const override;
int GetMaxDecodeRequests() const override;
VideoDecoderType GetDecoderType() const override;
bool IsPlatformDecoder() const override;
// VideoDecoderMixin implementation, specific part.
void ApplyResolutionChange() override;
bool NeedsTranscryption() override;
// stable::mojom::VideoDecoderClient implementation.
void OnVideoFrameDecoded(const scoped_refptr<VideoFrame>& frame,
bool can_read_without_stalling,
const base::UnguessableToken& release_token) final;
void OnWaiting(WaitingReason reason) final;
// stable::mojom::MediaLog implementation.
void AddLogRecord(const MediaLogRecord& event) final;
private:
OOPVideoDecoder(std::unique_ptr<media::MediaLog> media_log,
scoped_refptr<base::SequencedTaskRunner> decoder_task_runner,
base::WeakPtr<VideoDecoderMixin::Client> client,
mojo::PendingRemote<stable::mojom::StableVideoDecoder>
pending_remote_decoder);
~OOPVideoDecoder() override;
void OnInitializeDone(const DecoderStatus& status,
bool needs_bitstream_conversion,
int32_t max_decode_requests,
VideoDecoderType decoder_type);
void OnDecodeDone(uint64_t decode_id,
bool is_flushing,
const DecoderStatus& status);
void OnResetDone();
void Stop();
void ReleaseVideoFrame(const base::UnguessableToken& release_token);
InitCB init_cb_ GUARDED_BY_CONTEXT(sequence_checker_);
OutputCB output_cb_ GUARDED_BY_CONTEXT(sequence_checker_);
WaitingCB waiting_cb_ GUARDED_BY_CONTEXT(sequence_checker_);
uint64_t decode_counter_ GUARDED_BY_CONTEXT(sequence_checker_) = 0;
// std::map is used to ensure that iterating through |pending_decodes_| is
// done in the order in which Decode() is called.
std::map<uint64_t, DecodeCB> pending_decodes_
GUARDED_BY_CONTEXT(sequence_checker_);
base::OnceClosure reset_cb_ GUARDED_BY_CONTEXT(sequence_checker_);
mojo::AssociatedReceiver<stable::mojom::VideoDecoderClient> client_receiver_
GUARDED_BY_CONTEXT(sequence_checker_){this};
mojo::Receiver<stable::mojom::MediaLog> stable_media_log_receiver_
GUARDED_BY_CONTEXT(sequence_checker_){this};
VideoDecoderType decoder_type_ GUARDED_BY_CONTEXT(sequence_checker_) =
VideoDecoderType::kUnknown;
mojo::Remote<stable::mojom::StableVideoDecoder> remote_decoder_
GUARDED_BY_CONTEXT(sequence_checker_);
bool has_error_ GUARDED_BY_CONTEXT(sequence_checker_) = false;
mojo::Remote<stable::mojom::VideoFrameHandleReleaser>
stable_video_frame_handle_releaser_remote_
GUARDED_BY_CONTEXT(sequence_checker_);
std::unique_ptr<MojoDecoderBufferWriter> mojo_decoder_buffer_writer_
GUARDED_BY_CONTEXT(sequence_checker_);
// This is to indicate we should perform transcryption before sending the data
// to the video decoder utility process.
bool needs_transcryption_ GUARDED_BY_CONTEXT(sequence_checker_) = false;
SEQUENCE_CHECKER(sequence_checker_);
base::WeakPtrFactory<OOPVideoDecoder> weak_this_factory_
GUARDED_BY_CONTEXT(sequence_checker_);
};
} // namespace media
#endif // MEDIA_GPU_CHROMEOS_OOP_VIDEO_DECODER_H_
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