chromecast/media/cma/backend/media_pipeline_device_params.h

   1 // Copyright 2014 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 CHROMECAST_MEDIA_CMA_BACKEND_MEDIA_PIPELINE_DEVICE_PARAMS_H_
   6 #define CHROMECAST_MEDIA_CMA_BACKEND_MEDIA_PIPELINE_DEVICE_PARAMS_H_
   7
   8 #include "base/macros.h"
   9
  10 namespace chromecast {
  11 namespace media {
  12
  13 class MediaPipelineDeviceParams {
  14  public:
  15   enum MediaSyncType {
  16     // Default operation, synchronize playback using PTS with higher latency.
  17     kModeSyncPts = 0,
  18     // With this mode, synchronization is disabled and audio/video frames are
  19     // rendered "right away":
  20     // - for audio, frames are still rendered based on the sampling frequency
  21     // - for video, frames are rendered as soon as available at the output of
  22     //   the video decoder.
  23     //   The assumption is that no B frames are used when synchronization is
  24     //   disabled, otherwise B frames would always be skipped.
  25     kModeIgnorePts = 1,
  26     // In addition to the constraints above, also do not wait for vsync.
  27     kModeIgnorePtsAndVSync = 2,
  28   };
  29
  30   MediaPipelineDeviceParams();
  31   ~MediaPipelineDeviceParams();
  32
  33   MediaSyncType sync_type;
  34 };
  35
  36 }  // namespace media
  37 }  // namespace chromecast
  38
  39 #endif  // CHROMECAST_MEDIA_CMA_BACKEND_MEDIA_PIPELINE_DEVICE_PARAMS_H_