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PCM: Introduce snd_pcm_chmap_t and snd_pcm_chmap_query_t

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Instead of passing ambiguous integer array, define snd_pcm_chmap_t and
snd_pcm_chmap_query_t so that user can understand more easily which
element is for what.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-09-04 17:26:43 +02:00
parent 48c2c90f19
commit 9c1a0ce72d
15 changed files with 102 additions and 84 deletions
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10
src/pcm/pcm.c
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@ -7310,7 +7310,7 @@ OBSOLETE1(snd_pcm_sw_params_get_silence_size, ALSA_0.9, ALSA_0.9.0rc4);
* integer array, beginning with the channel map type, followed by the
* number of channels, and the position of each channel.
*/
int **snd_pcm_query_chmaps(snd_pcm_t *pcm)
snd_pcm_chmap_query_t **snd_pcm_query_chmaps(snd_pcm_t *pcm)
{
if (!pcm->ops->query_chmaps)
return NULL;
@ -7321,9 +7321,9 @@ int **snd_pcm_query_chmaps(snd_pcm_t *pcm)
* \!brief Release the channel map array allocated via #snd_pcm_query_chmaps
* \param maps the array pointer to release
*/
void snd_pcm_free_chmaps(int **maps)
void snd_pcm_free_chmaps(snd_pcm_chmap_query_t **maps)
{
int **p;
snd_pcm_chmap_query_t **p = maps;
if (!maps)
return;
for (p = maps; *p; p++)
@ -7336,7 +7336,7 @@ void snd_pcm_free_chmaps(int **maps)
* \param pcm PCM instance
* \return the current channel map, or NULL if error
*/
int *snd_pcm_get_chmap(snd_pcm_t *pcm)
snd_pcm_chmap_t *snd_pcm_get_chmap(snd_pcm_t *pcm)
{
if (!pcm->ops->get_chmap)
return NULL;
@ -7349,7 +7349,7 @@ int *snd_pcm_get_chmap(snd_pcm_t *pcm)
* \param map the channel map to write
* \return zero if succeeded, or a negative error code
*/
int snd_pcm_set_chmap(snd_pcm_t *pcm, const int *map)
int snd_pcm_set_chmap(snd_pcm_t *pcm, const snd_pcm_chmap_t *map)
{
if (!pcm->ops->set_chmap)
return -ENXIO;