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| author | Takashi Iwai <tiwai@suse.de> | 2012-08-21 14:47:18 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-09-06 18:08:34 +0200 |
| commit | 080108c4747c7378c3601b8584237484f977d8a8 (patch) | |
| tree | 1fd819403a1e6ea93dae80bdaafd1ed3b2407ff7 /Documentation/sound | |
| parent | ALSA: Remove VOLATILE flag from chmap ctls (diff) | |
| download | linux-080108c4747c7378c3601b8584237484f977d8a8.tar.xz linux-080108c4747c7378c3601b8584237484f977d8a8.zip | |
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>
Diffstat (limited to 'Documentation/sound')
| -rw-r--r-- | Documentation/sound/alsa/Channel-Mapping-API.txt | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/Documentation/sound/alsa/Channel-Mapping-API.txt b/Documentation/sound/alsa/Channel-Mapping-API.txt index df930aa4f4d0..4bbf12d5553f 100644 --- a/Documentation/sound/alsa/Channel-Mapping-API.txt +++ b/Documentation/sound/alsa/Channel-Mapping-API.txt @@ -76,20 +76,22 @@ here is a cut: /* 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 */ |