/// <summary>
/// Play an asset from a specified time position its to end
/// </summary>
public void Play(urakawa.media.data.audio.AudioMediaData audio, double from)
{
if (this.state == PlayerState.Stopped || this.state == PlayerState.Paused)
{
if (audio != null && audio.getAudioDuration().getTimeDeltaAsMillisecondFloat() > 0)
{
urakawa.media.data.audio.PCMFormatInfo info = audio.getPCMFormat();
int position = CalculationFunctions.AdaptToFrame(
CalculationFunctions.ConvertTimeToByte(from, (int)info.getSampleRate(), info.getBlockAlign()),
info.getBlockAlign());
if (position >= 0 && position <= audio.getPCMLength())
{
this.startPosition = position;
InitPlay(audio, position, 0);
}
else
{
throw new Exception("Start Position is out of bounds of Audio Asset");
}
}
}
}
// Compute the necessary width for the amount of audio at the current audio scale.
private int WidthForAudio(urakawa.media.data.audio.AudioMediaData audio)
{
return((int)Math.Round(this.zoom * (audio == null ? this.baseSize.Width :
this.audioScale * audio.getAudioDuration().getTimeDeltaAsMillisecondFloat())));
}