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// Copyright 2017 Google Inc. 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_RESAMPLER_H_
#define STARBOARD_SHARED_FFMPEG_FFMPEG_AUDIO_RESAMPLER_H_
#include <queue>
#include "starboard/media.h"
#include "starboard/shared/ffmpeg/ffmpeg_common.h"
#include "starboard/shared/internal_only.h"
#include "starboard/shared/starboard/player/decoded_audio_internal.h"
#include "starboard/shared/starboard/player/filter/audio_resampler.h"
#include "starboard/shared/starboard/thread_checker.h"
namespace starboard {
namespace shared {
namespace ffmpeg {
class AudioResampler : public starboard::player::filter::AudioResampler {
public:
AudioResampler(SbMediaAudioSampleType source_sample_type,
SbMediaAudioFrameStorageType source_storage_type,
int source_sample_rate,
SbMediaAudioSampleType destination_sample_type,
SbMediaAudioFrameStorageType destination_storage_type,
int destination_sample_rate,
int channels);
~AudioResampler() SB_OVERRIDE;
scoped_refptr<DecodedAudio> Resample(
const scoped_refptr<DecodedAudio>& audio_data) SB_OVERRIDE;
scoped_refptr<DecodedAudio> WriteEndOfStream() SB_OVERRIDE;
private:
scoped_refptr<DecodedAudio> RetrieveOutput();
shared::starboard::ThreadChecker thread_checker_;
SbMediaAudioSampleType source_sample_type_;
SbMediaAudioFrameStorageType source_storage_type_;
SbMediaAudioSampleType destination_sample_type_;
SbMediaAudioFrameStorageType destination_storage_type_;
int destination_sample_rate_; // Used for timestamp adjustment.
int channels_;
SbMediaTime start_pts_;
int samples_returned_;
bool eos_reached_;
AVAudioResampleContext* context_;
};
} // namespace ffmpeg
} // namespace shared
} // namespace starboard
#endif // STARBOARD_SHARED_FFMPEG_FFMPEG_AUDIO_RESAMPLER_H_