SNDRV_PCM_INFO_HALF_DUPLEX  291 include/uapi/sound/asound.h #define SNDRV_PCM_INFO_HALF_DUPLEX	0x00100000	/* only half duplex */
SNDRV_PCM_INFO_HALF_DUPLEX  291 tools/include/uapi/sound/asound.h #define SNDRV_PCM_INFO_HALF_DUPLEX	0x00100000	/* only half duplex */