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-rw-r--r--src/pcm.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/src/pcm.c b/src/pcm.c
index 73debb4..29c69a7 100644
--- a/src/pcm.c
+++ b/src/pcm.c
@@ -808,7 +808,7 @@ int pcm_close(struct pcm *pcm)
* @ingroup libtinyalsa-pcm
*/
struct pcm *pcm_open(unsigned int card, unsigned int device,
- unsigned int flags, struct pcm_config *config)
+ unsigned int flags, const struct pcm_config *config)
{
struct pcm *pcm;
struct snd_pcm_info info;
@@ -823,14 +823,14 @@ struct pcm *pcm_open(unsigned int card, unsigned int device,
if (config == NULL) {
config = &pcm->config;
- config->channels = 2;
- config->rate = 48000;
- config->period_size = 1024;
- config->period_count = 4;
- config->format = PCM_FORMAT_S16_LE;
- config->start_threshold = config->period_count * config->period_size;
- config->stop_threshold = config->period_count * config->period_size;
- config->silence_threshold = 0;
+ pcm->config.channels = 2;
+ pcm->config.rate = 48000;
+ pcm->config.period_size = 1024;
+ pcm->config.period_count = 4;
+ pcm->config.format = PCM_FORMAT_S16_LE;
+ pcm->config.start_threshold = config->period_count * config->period_size;
+ pcm->config.stop_threshold = config->period_count * config->period_size;
+ pcm->config.silence_threshold = 0;
} else {
pcm->config = *config;
}
@@ -890,8 +890,8 @@ struct pcm *pcm_open(unsigned int card, unsigned int device,
}
/* get our refined hw_params */
- config->period_size = param_get_int(&params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
- config->period_count = param_get_int(&params, SNDRV_PCM_HW_PARAM_PERIODS);
+ pcm->config.period_size = param_get_int(&params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
+ pcm->config.period_count = param_get_int(&params, SNDRV_PCM_HW_PARAM_PERIODS);
pcm->buffer_size = config->period_count * config->period_size;
if (flags & PCM_MMAP) {