media/base/android/audio_decoder_job.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_BASE_ANDROID_AUDIO_DECODER_JOB_H_
   6 #define MEDIA_BASE_ANDROID_AUDIO_DECODER_JOB_H_
   7
   8 #include <jni.h>
   9
  10 #include "media/base/android/media_decoder_job.h"
  11
  12 namespace media {
  13
  14 class AudioCodecBridge;
  15
  16 // Class for managing audio decoding jobs.
  17 class AudioDecoderJob : public MediaDecoderJob {
  18  public:
  19   virtual ~AudioDecoderJob();
  20
  21   // Creates a new AudioDecoderJob instance for decoding audio.
  22   // |audio_codec| - The audio format the object needs to decode.
  23   // |sample_rate| - The sample rate of the decoded output.
  24   // |channel_count| - The number of channels in the decoded output.
  25   // |extra_data|, |extra_data_size| - Extra data buffer needed for initializing
  26   // the decoder.
  27   // |media_crypto| - Handle to a Java object that handles the encryption for
  28   // the audio data.
  29   static AudioDecoderJob* Create(
  30       const AudioCodec audio_codec, int sample_rate, int channel_count,
  31       const uint8* extra_data, size_t extra_data_size, jobject media_crypto);
  32
  33   void SetVolume(double volume);
  34
  35  private:
  36   AudioDecoderJob(scoped_ptr<AudioCodecBridge> audio_decoder_bridge);
  37
  38   // MediaDecoderJob implementation.
  39   virtual void ReleaseOutputBuffer(
  40       int outputBufferIndex, size_t size,
  41       const base::TimeDelta& presentation_timestamp,
  42       const MediaDecoderJob::DecoderCallback& callback,
  43       DecodeStatus status) OVERRIDE;
  44
  45   virtual bool ComputeTimeToRender() const OVERRIDE;
  46
  47   scoped_ptr<AudioCodecBridge> audio_codec_bridge_;
  48 };
  49
  50 }  // namespace media
  51
  52 #endif  // MEDIA_BASE_ANDROID_AUDIO_DECODER_JOB_H_