C++ (Cpp) wave_get_remaining_time示例

示例#1

文件： wave_sada.cpp 项目： AVGP/speak.js

int wave_is_busy(void* theHandler)
{
   uint32_t time;
   if (total_samples_sent >= 1) {
       wave_get_remaining_time(total_samples_sent - 1, &time);
   } else {
       time = 0;
   }
   return time != 0;
}

示例#2

文件： wave_sada.c 项目： leonardder/espeak-ng

// wave_is_busy
//
// DESCRIPTION:
//
// Returns a non-0 value if audio is being played.
//
// PARAMETERS:
//
// theHandler: the audio device file descriptor
//
// GLOBALS USED/MODIFIED:
//
// sun_audio_fd: used because some calls to wave_is_busy seem to
//               pass a NULL for theHandler for some odd reason
//
// RETURNS:
//
// A non-0 value if audio is being played
//
int wave_is_busy(void *theHandler)
{
	(void)theHandler; // unused

	uint32_t time;
	if (total_samples_sent >= 1)
		wave_get_remaining_time(total_samples_sent - 1, &time);
	else
		time = 0;
	return time != 0;
}

示例#3

文件： event.cpp 项目： mondhs/espeak

static int get_remaining_time(uint32_t sample, uint32_t* time_in_ms, int* stop_is_required)
{
ENTER("get_remaining_time");

	int err = 0;
	*stop_is_required = 0;
	int i=0;

	for (i=0; i < MAX_ACTIVITY_CHECK && (*stop_is_required == 0); i++)
	{
		err = wave_get_remaining_time( sample, time_in_ms);

		if (err || wave_is_busy(NULL) || (*time_in_ms == 0))
		{ // if err, stream not available: quit
	  // if wave is busy, time_in_ms is known: quit
	  // if wave is not busy but remaining time == 0, event is reached: quit
		break;
	}

      // stream opened but not active
      //
      // Several possible states: 
      //   * the stream is opened but not yet started: 
      //
      //       wait for the start of stream
      //
      //   * some samples have already been played, 
      //      ** the end of stream is reached
      //      ** or there is an underrun
      //      
      //       wait for the close of stream

		*stop_is_required = sleep_until_timeout_or_stop_request( ACTIVITY_TIMEOUT);      
	}

	return err;
}