To delay activation of waveform-audio outputWhile recording or playing waveform audio, you might want to stop, pause, or restart the audio I/O device. The following table shows the functions that control these capabilities.
Function |
Description |
| waveInStop | Stops recording on a waveform audio input device |
| waveOutPause | Pauses playback on a waveform audio output device |
| waveInReset | Stops recording on a waveform audio input device and marks all pending data blocks as done |
| waveOutReset | Stops playback on a waveform audio output device and marks all pending data blocks as done |
| waveInStart | Begins recording on a waveform audio input device |
| waveOutRestart | Resumes playback on a paused waveform audio output device |
Generally, the waveform audio I/O device begins recording or playing as soon as the waveOutWrite or waveInAddBuffer function sends the first waveform-audio data block.
To delay activation of waveform-audio outputThis sends the first data block to the waveform-audio output device. However, the device is paused by the previous call to waveOutPause.
Once the device begins playback, it might not respond to waveOutPause immediately. Depending on the device driver, the device might finish playing the current data block before pausing.
You can also delay activation of waveform-audio input. Call waveInAddBuffer as needed to allocate space for the audio input. The device will not begin recording until you call waveInStart.
Once the device stops recording or playback in response to a waveOutReset or waveInReset command, you cannot restart playback with waveOutRestart or waveInStart. Instead, resume recording or playback by sending the next data block with waveOutWrite or waveInAddBuffer and waveInStart.