media/audio/audio_buffers_state.h

   1 // Copyright (c) 2012 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_AUDIO_AUDIO_BUFFERS_STATE_H_
   6 #define MEDIA_AUDIO_AUDIO_BUFFERS_STATE_H_
   7
   8 #include "media/base/media_export.h"
   9
  10 namespace media {
  11
  12 // AudioBuffersState struct stores current state of audio buffers.
  13 // It is used for audio synchronization.
  14 struct MEDIA_EXPORT AudioBuffersState {
  15   AudioBuffersState();
  16   AudioBuffersState(int pending_bytes, int hardware_delay_bytes);
  17
  18   int total_bytes() {
  19     return pending_bytes + hardware_delay_bytes;
  20   }
  21
  22   // Number of bytes we currently have in our software buffer.
  23   int pending_bytes;
  24
  25   // Number of bytes that have been written to the device, but haven't
  26   // been played yet.
  27   int hardware_delay_bytes;
  28 };
  29
  30 }  // namespace media
  31
  32 #endif  // MEDIA_AUDIO_AUDIO_BUFFERS_STATE_H_