frames_for_duration
int64 temp = frames_for_duration(fMixBufferFrameRate, start);
int offset = frames_for_duration(fMixBufferFrameRate, start)
int temp = frames_for_duration(framerate, mixerBufferLength);
int64 frames_for_duration(double framerate, bigtime_t duration);
frames_for_duration(
int64 toProcess = frames_for_duration(output.format(), nextEventTime - targetTime);
int64 frames_for_duration(const media_raw_audio_format & format,
int64 frames_for_duration(const media_raw_audio_format & format,