SNDRV_PCM_IOCTL_TTSTAMP  578 include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_TTSTAMP		_IOW('A', 0x03, int)
SNDRV_PCM_IOCTL_TTSTAMP  578 tools/include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_TTSTAMP		_IOW('A', 0x03, int)