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-rw-r--r--apps/recorder/pcm_record.c48
1 files changed, 16 insertions, 32 deletions
diff --git a/apps/recorder/pcm_record.c b/apps/recorder/pcm_record.c
index 9b0e779485..ef10f8a433 100644
--- a/apps/recorder/pcm_record.c
+++ b/apps/recorder/pcm_record.c
@@ -878,53 +878,37 @@ copy_buffer_mono_lr(void *dst, const void *src, size_t src_size)
ssize_t copy_size = src_size;
/* mono = (L + R) / 2 */
- do
- {
- *d++ = ((int32_t){s[0]} + s[1] + 1) >> 1;
- s+=2;
+ while(copy_size > 0) {
+ *d++ = ((int32_t)s[0] + (int32_t)s[1] + 1) >> 1;
+ s += 2;
+ copy_size -= PCM_SAMP_SIZE;
}
- while ((copy_size -= PCM_SAMP_SIZE) > 0);
return dst;
}
-/* Copy with mono conversion - output 1/2 size of input */
static void * ICODE_ATTR
-copy_buffer_mono_r(void *dst, const void *src, size_t src_size)
+copy_buffer_mono_l(void *dst, const void *src, size_t src_size)
{
- int16_t *d = (int16_t*)dst;
- int16_t const *s = (int16_t const*)src - 1;
+ int16_t *d = (int16_t*) dst;
+ int16_t const *s = (int16_t const*) src;
ssize_t copy_size = src_size;
- /* mono = R */
- do
- *d++ = *(s += 2);
- while ((copy_size -= PCM_SAMP_SIZE) > 0);
+
+ /* mono = L */
+ while(copy_size > 0) {
+ *d++ = *s;
+ s += 2;
+ copy_size -= PCM_SAMP_SIZE;
+ }
return dst;
}
-#if 1
-static void * ICODE_ATTR
-copy_buffer_mono_l(void *dst, const void *src, size_t src_size)
-{
- return copy_buffer_mono_r(dst, src -1, src_size);
-}
-#else
-/* Copy with mono conversion - output 1/2 size of input */
static void * ICODE_ATTR
-copy_buffer_mono_l(void *dst, const void *src, size_t src_size)
+copy_buffer_mono_r(void *dst, const void *src, size_t src_size)
{
- int16_t *d = (int16_t*)dst;
- int16_t const *s = (int16_t const*)src - 2;
- ssize_t copy_size = src_size;
- /* mono = L */
- do
- *d++ = *(s += 2);
- while ((copy_size -= PCM_SAMP_SIZE) > 0);
-
- return dst;
+ return copy_buffer_mono_l(dst, src + 2, src_size);
}
-#endif
/** pcm_rec_* group **/