提交 2dc6fbf0 编写于 作者: T Takashi Iwai

ALSA: pcm - Use UNKNOWN chmap for mono streams

In general, mono streams have no dedicated speaker assignment, thus
they should be rather marked as UNKNOWN position.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
上级 498dab3a
......@@ -2311,7 +2311,7 @@ EXPORT_SYMBOL(snd_pcm_lib_readv);
/* default channel maps for multi-channel playbacks, up to 8 channels */
const struct snd_pcm_chmap_elem snd_pcm_std_chmaps[] = {
{ .channels = 1,
.map = { SNDRV_CHMAP_FC } },
.map = { SNDRV_CHMAP_UNKNOWN } },
{ .channels = 2,
.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
{ .channels = 4,
......@@ -2333,7 +2333,7 @@ EXPORT_SYMBOL_GPL(snd_pcm_std_chmaps);
/* alternative channel maps with CLFE <-> surround swapped for 6/8 channels */
const struct snd_pcm_chmap_elem snd_pcm_alt_chmaps[] = {
{ .channels = 1,
.map = { SNDRV_CHMAP_FC } },
.map = { SNDRV_CHMAP_UNKNOWN } },
{ .channels = 2,
.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
{ .channels = 4,
......
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