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alsa: allow override of channel map

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This commit is contained in:
Wim Taymans 2020-12-28 14:24:59 +01:00
parent 036c10717d
commit 4b076549f7
4 changed files with 45 additions and 9 deletions
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15
spa/plugins/alsa/alsa-pcm.h
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@ -80,6 +80,10 @@ struct buffer {
#define BW_MIN 0.016
#define BW_PERIOD (3 * SPA_NSEC_PER_SEC)
struct channel_map {
uint32_t channels;
uint32_t pos[SPA_AUDIO_MAX_CHANNELS];
};
struct state {
struct spa_handle handle;
struct spa_node node;
@ -109,6 +113,7 @@ struct state {
uint32_t default_format;
unsigned int default_channels;
unsigned int default_rate;
struct channel_map default_pos;
snd_pcm_uframes_t buffer_frames;
snd_pcm_uframes_t period_frames;
@ -195,6 +200,16 @@ static inline uint32_t spa_alsa_format_from_name(const char *name, size_t len)
return SPA_AUDIO_FORMAT_UNKNOWN;
}
static inline uint32_t spa_alsa_channel_from_name(const char *name, size_t len)
{
int i;
for (i = 0; spa_type_audio_channel[i].name; i++) {
if (strncmp(name, spa_debug_type_short_name(spa_type_audio_channel[i].name), len) == 0)
return spa_type_audio_channel[i].type;
}
return SPA_AUDIO_CHANNEL_UNKNOWN;
}
#ifdef __cplusplus
} /* extern "C" */
#endif