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// Copyright 2013 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_BASE_ANDROID_AUDIO_DECODER_JOB_H_
#define MEDIA_BASE_ANDROID_AUDIO_DECODER_JOB_H_
#include <jni.h>
#include <vector>
#include "base/callback.h"
#include "media/base/android/media_decoder_job.h"
namespace media {
class AudioCodecBridge;
class AudioTimestampHelper;
// Class for managing audio decoding jobs.
class AudioDecoderJob : public MediaDecoderJob {
public:
// Creates a new AudioDecoderJob instance for decoding audio.
// |request_data_cb| - Callback used to request more data for the decoder.
// |on_demuxer_config_changed_cb| - Callback used to inform the caller that
// demuxer config has changed.
AudioDecoderJob(const base::Closure& request_data_cb,
const base::Closure& on_demuxer_config_changed_cb);
~AudioDecoderJob() override;
// MediaDecoderJob implementation.
bool HasStream() const override;
void Flush() override;
void SetDemuxerConfigs(const DemuxerConfigs& configs) override;
// Sets the volume of the audio output.
void SetVolume(double volume);
double volume() const { return volume_; }
// Sets the base timestamp for |audio_timestamp_helper_|.
void SetBaseTimestamp(base::TimeDelta base_timestamp);
private:
// MediaDecoderJob implementation.
void ReleaseOutputBuffer(
int output_buffer_index,
size_t size,
bool render_output,
base::TimeDelta current_presentation_timestamp,
const ReleaseOutputCompletionCallback& callback) override;
bool ComputeTimeToRender() const override;
bool AreDemuxerConfigsChanged(const DemuxerConfigs& configs) const override;
MediaDecoderJobStatus CreateMediaCodecBridgeInternal() override;
void OnOutputFormatChanged() override;
// Helper method to set the audio output volume.
void SetVolumeInternal();
void ResetTimestampHelper();
// Audio configs from the demuxer.
AudioCodec audio_codec_;
int num_channels_;
int config_sampling_rate_;
std::vector<uint8> audio_extra_data_;
int64 audio_codec_delay_ns_;
int64 audio_seek_preroll_ns_;
double volume_;
int bytes_per_frame_;
// Audio output sample rate
int output_sampling_rate_;
// Frame count to sync with audio codec output
int64 frame_count_;
// Base timestamp for the |audio_timestamp_helper_|.
base::TimeDelta base_timestamp_;
// Object to calculate the current audio timestamp for A/V sync.
scoped_ptr<AudioTimestampHelper> audio_timestamp_helper_;
DISALLOW_COPY_AND_ASSIGN(AudioDecoderJob);
};
} // namespace media
#endif // MEDIA_BASE_ANDROID_AUDIO_DECODER_JOB_H_
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