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// Copyright 2018 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef STARBOARD_SHARED_FFMPEG_FFMPEG_AUDIO_DECODER_IMPL_H_
#define STARBOARD_SHARED_FFMPEG_FFMPEG_AUDIO_DECODER_IMPL_H_
#include <queue>
#include "starboard/common/ref_counted.h"
#include "starboard/media.h"
#include "starboard/shared/ffmpeg/ffmpeg_audio_decoder.h"
#include "starboard/shared/ffmpeg/ffmpeg_audio_decoder_impl_interface.h"
#include "starboard/shared/ffmpeg/ffmpeg_common.h"
#include "starboard/shared/ffmpeg/ffmpeg_dispatch.h"
#include "starboard/shared/internal_only.h"
#include "starboard/shared/starboard/media/media_util.h"
#include "starboard/shared/starboard/player/decoded_audio_internal.h"
#include "starboard/shared/starboard/player/filter/audio_decoder_internal.h"
#include "starboard/shared/starboard/player/job_queue.h"
namespace starboard {
namespace shared {
namespace ffmpeg {
// Forward class declaration of the explicit specialization with value FFMPEG.
template <>
class AudioDecoderImpl<FFMPEG>;
// Declare the explicit specialization of the class with value FFMPEG.
template <>
class AudioDecoderImpl<FFMPEG> : public AudioDecoder,
private starboard::player::JobQueue::JobOwner {
public:
explicit AudioDecoderImpl(const AudioStreamInfo& audio_stream_info);
~AudioDecoderImpl() override;
// From: AudioDecoder
static AudioDecoder* Create(const AudioStreamInfo& audio_stream_info);
bool is_valid() const override;
// From: starboard::player::filter::AudioDecoder
void Initialize(const OutputCB& output_cb, const ErrorCB& error_cb) override;
void Decode(const InputBuffers& input_buffers,
const ConsumedCB& consumed_cb) override;
void WriteEndOfStream() override;
scoped_refptr<DecodedAudio> Read(int* samples_per_second) override;
void Reset() override;
private:
SbMediaAudioSampleType GetSampleType() const;
SbMediaAudioFrameStorageType GetStorageType() const;
void InitializeCodec();
void TeardownCodec();
// Processes decoded (PCM) audio data received from FFmpeg. The audio data is
// ultimately enqueued in decoded_audios_.
void ProcessDecodedFrame(const InputBuffer& input_buffer,
const AVFrame& av_frame);
static const int kMaxDecodedAudiosSize = 64;
FFMPEGDispatch* ffmpeg_;
OutputCB output_cb_;
ErrorCB error_cb_;
AVCodecContext* codec_context_;
AVFrame* av_frame_;
bool stream_ended_;
std::queue<scoped_refptr<DecodedAudio> > decoded_audios_;
AudioStreamInfo audio_stream_info_;
};
} // namespace ffmpeg
} // namespace shared
} // namespace starboard
#endif // STARBOARD_SHARED_FFMPEG_FFMPEG_AUDIO_DECODER_IMPL_H_