diff options
Diffstat (limited to 'media/base/pipeline.h')
| -rw-r--r-- | media/base/pipeline.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/media/base/pipeline.h b/media/base/pipeline.h index 50e1a06..f6ef541 100644 --- a/media/base/pipeline.h +++ b/media/base/pipeline.h @@ -70,10 +70,22 @@ class PipelineStatus { // values for playback rate are >= 0.0f. virtual float GetPlaybackRate() const = 0; - // Gets the current pipeline time in microseconds. For a pipeline "time" - // progresses from 0 to the end of the media. + // Gets the current pipeline time in microseconds. For a pipeline "time" + // progresses from 0 to the end of the media. This time base is updated + // by the audio renderer to allow for synchronization of audio and video. + // Note that a more accurate time may be obtained by calling the + // GetInterpolatedTime method which estimates the position of the audio + // device based on a combination of the last time the audio device reported + // it's position and the current system time. virtual base::TimeDelta GetTime() const = 0; + // Gets the current pipeline time in microseconds. For a pipeline "time" + // progresses from 0 to the end of the media. Becuase this method provides + // an estimated time, it is possible that subsequent calls to this method will + // actually progress backwards slightly, so callers must not assume that this + // method will always return times larger than the last one. + virtual base::TimeDelta GetInterpolatedTime() const = 0; + // Gets the current error status for the pipeline. If the pipeline is // operating correctly, this will return OK. virtual PipelineError GetError() const = 0; |