Constructor Detail

• VideoFrameReleaseHelper

  public VideoFrameReleaseHelper​(@Nullable
                                 Context context)

  Constructs an instance.

  Parameters:

  context - A context from which information about the default display can be retrieved.

Method Detail

• setChangeFrameRateStrategy

  public void setChangeFrameRateStrategy​(@VideoChangeFrameRateStrategy
                                         int changeFrameRateStrategy)

  Change the C.VideoChangeFrameRateStrategy used when calling Surface.setFrameRate(float, int, int).

• onEnabled

  public void onEnabled()

  Called when the renderer is enabled.

• onStarted

  public void onStarted()

  Called when the renderer is started.

• onSurfaceChanged

  public void onSurfaceChanged​(@Nullable
                               Surface surface)

  Called when the renderer changes which Surface it's rendering to renders to.

  Parameters:

  surface - The new Surface, or null if the renderer does not have one.

• onPositionReset

  public void onPositionReset()

  Called when the renderer's position is reset.

• onPlaybackSpeed

  public void onPlaybackSpeed​(float playbackSpeed)

  Called when the renderer's playback speed changes.

  Parameters:

  playbackSpeed - The factor by which playback is sped up.

• onFormatChanged

  public void onFormatChanged​(float formatFrameRate)

  Called when the renderer's output format changes.

  Parameters:

  formatFrameRate - The format's frame rate, or Format.NO_VALUE if unknown.

• onNextFrame

  public void onNextFrame​(long framePresentationTimeUs)

  Called by the renderer for each frame, prior to it being skipped, dropped or rendered.

  Parameters:

  framePresentationTimeUs - The frame presentation timestamp, in microseconds.

• onStopped

  public void onStopped()

  Called when the renderer is stopped.

• onDisabled

  public void onDisabled()

  Called when the renderer is disabled.

• adjustReleaseTime

  public long adjustReleaseTime​(long releaseTimeNs)

  Adjusts the release timestamp for the next frame. This is the frame whose presentation timestamp was most recently passed to onNextFrame(long).

  This method may be called any number of times for each frame, including zero times (for skipped frames, or when rendering the first frame prior to playback starting), or more than once (if the caller wishes to give the helper the opportunity to refine a release time closer to when the frame needs to be released).

  Parameters:

  releaseTimeNs - The frame's unadjusted release time, in nanoseconds and in the same time base as System.nanoTime().

  Returns:

  The adjusted frame release timestamp, in nanoseconds and in the same time base as System.nanoTime().