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-rw-r--r--src/pcm.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/src/pcm.c b/src/pcm.c
index 2279137..c3c6a1e 100644
--- a/src/pcm.c
+++ b/src/pcm.c
@@ -522,11 +522,11 @@ int pcm_get_htimestamp(struct pcm *pcm, unsigned int *avail,
* This function is not valid for PCMs opened with the @ref PCM_MMAP flag.
* @param pcm A PCM handle.
* @param data The audio sample array
- * @param count The number of bytes occupied by the sample array.
+ * @param frame_count The number of frames occupied by the sample array.
* @return On success, this function returns the number of frames written; otherwise, a negative number.
* @ingroup libtinyalsa-pcm
*/
-int pcm_writei(struct pcm *pcm, const void *data, unsigned int count)
+int pcm_writei(struct pcm *pcm, const void *data, unsigned int frame_count)
{
struct snd_xferi x;
@@ -534,8 +534,7 @@ int pcm_writei(struct pcm *pcm, const void *data, unsigned int count)
return -EINVAL;
x.buf = (void*)data;
- x.frames = count / (pcm->config.channels *
- pcm_format_to_bits(pcm->config.format) / 8);
+ x.frames = frame_count;
x.result = 0;
for (;;) {
if (!pcm->running) {
@@ -571,11 +570,11 @@ int pcm_writei(struct pcm *pcm, const void *data, unsigned int count)
* This function is not valid for PCMs opened with the @ref PCM_MMAP flag.
* @param pcm A PCM handle.
* @param data The audio sample array
- * @param count The number of bytes occupied by the sample array.
+ * @param count The number of frames occupied by the sample array.
* @return On success, this function returns the number of frames written; otherwise, a negative number.
* @ingroup libtinyalsa-pcm
*/
-int pcm_readi(struct pcm *pcm, void *data, unsigned int count)
+int pcm_readi(struct pcm *pcm, void *data, unsigned int frame_count)
{
struct snd_xferi x;
@@ -583,8 +582,7 @@ int pcm_readi(struct pcm *pcm, void *data, unsigned int count)
return -EINVAL;
x.buf = data;
- x.frames = count / (pcm->config.channels *
- pcm_format_to_bits(pcm->config.format) / 8);
+ x.frames = frame_count;
x.result = 0;
for (;;) {
if (!pcm->running) {
@@ -620,7 +618,7 @@ int pcm_readi(struct pcm *pcm, void *data, unsigned int count)
*/
int pcm_write(struct pcm *pcm, const void *data, unsigned int count)
{
- int ret = pcm_writei(pcm, data, count);
+ int ret = pcm_writei(pcm, data, pcm_bytes_to_frames(pcm, count));
if (ret < 0){
return ret;
}
@@ -640,7 +638,7 @@ int pcm_write(struct pcm *pcm, const void *data, unsigned int count)
*/
int pcm_read(struct pcm *pcm, void *data, unsigned int count)
{
- int ret = pcm_readi(pcm, data, count);
+ int ret = pcm_readi(pcm, data, pcm_bytes_to_frames(pcm, count));
if (ret < 0) {
return ret;
}