ALSA: Follow channel position definitions to alsa-lib mixer
There is already a set of channel position definitions in alsa-lib
mixer.h, and it'd be more practical to keep the same order for the
PCM channel map, too. The value is shifted with 1 to keep zero for
UNKNOWN.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/Documentation/sound/alsa/Channel-Mapping-API.txt b/Documentation/sound/alsa/Channel-Mapping-API.txt
index df930aa..4bbf12d 100644
--- a/Documentation/sound/alsa/Channel-Mapping-API.txt
+++ b/Documentation/sound/alsa/Channel-Mapping-API.txt
@@ -76,20 +76,22 @@
/* channel positions */
enum {
+ /* this follows the alsa-lib mixer channel value + 1 */
SNDRV_CHMAP_UNKNOWN = 0,
SNDRV_CHMAP_FL, /* front left */
- SNDRV_CHMAP_FC, /* front center */
SNDRV_CHMAP_FR, /* front right */
- SNDRV_CHMAP_FLC, /* front left center */
- SNDRV_CHMAP_FRC, /* front right center */
SNDRV_CHMAP_RL, /* rear left */
- SNDRV_CHMAP_RC, /* rear center */
SNDRV_CHMAP_RR, /* rear right */
- SNDRV_CHMAP_RLC, /* rear left center */
- SNDRV_CHMAP_RRC, /* rear right center */
+ SNDRV_CHMAP_FC, /* front center */
+ SNDRV_CHMAP_LFE, /* LFE */
SNDRV_CHMAP_SL, /* side left */
SNDRV_CHMAP_SR, /* side right */
- SNDRV_CHMAP_LFE, /* LFE */
+ SNDRV_CHMAP_RC, /* rear center */
+ /* new definitions */
+ SNDRV_CHMAP_FLC, /* front left center */
+ SNDRV_CHMAP_FRC, /* front right center */
+ SNDRV_CHMAP_RLC, /* rear left center */
+ SNDRV_CHMAP_RRC, /* rear right center */
SNDRV_CHMAP_FLW, /* front left wide */
SNDRV_CHMAP_FRW, /* front right wide */
SNDRV_CHMAP_FLH, /* front left high */
diff --git a/include/sound/asound.h b/include/sound/asound.h
index 376e756..27686da 100644
--- a/include/sound/asound.h
+++ b/include/sound/asound.h
@@ -474,20 +474,22 @@
/* channel positions */
enum {
+ /* this follows the alsa-lib mixer channel value + 1 */
SNDRV_CHMAP_UNKNOWN = 0,
SNDRV_CHMAP_FL, /* front left */
- SNDRV_CHMAP_FC, /* front center */
SNDRV_CHMAP_FR, /* front right */
- SNDRV_CHMAP_FLC, /* front left center */
- SNDRV_CHMAP_FRC, /* front right center */
SNDRV_CHMAP_RL, /* rear left */
- SNDRV_CHMAP_RC, /* rear center */
SNDRV_CHMAP_RR, /* rear right */
- SNDRV_CHMAP_RLC, /* rear left center */
- SNDRV_CHMAP_RRC, /* rear right center */
+ SNDRV_CHMAP_FC, /* front center */
+ SNDRV_CHMAP_LFE, /* LFE */
SNDRV_CHMAP_SL, /* side left */
SNDRV_CHMAP_SR, /* side right */
- SNDRV_CHMAP_LFE, /* LFE */
+ SNDRV_CHMAP_RC, /* rear center */
+ /* new definitions */
+ SNDRV_CHMAP_FLC, /* front left center */
+ SNDRV_CHMAP_FRC, /* front right center */
+ SNDRV_CHMAP_RLC, /* rear left center */
+ SNDRV_CHMAP_RRC, /* rear right center */
SNDRV_CHMAP_FLW, /* front left wide */
SNDRV_CHMAP_FRW, /* front right wide */
SNDRV_CHMAP_FLH, /* front left high */
