SNDRV_PCM_IOCTL_FORWARD  599 include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_FORWARD		_IOW('A', 0x49, snd_pcm_uframes_t)
SNDRV_PCM_IOCTL_FORWARD  599 tools/include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_FORWARD		_IOW('A', 0x49, snd_pcm_uframes_t)