diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/pcm_mix.c | 9 | ||||
| -rw-r--r-- | src/pcm_volume.c | 9 | ||||
| -rw-r--r-- | src/pcm_volume.h | 2 |
3 files changed, 13 insertions, 7 deletions
diff --git a/src/pcm_mix.c b/src/pcm_mix.c index 208805831..0ca5a9a7f 100644 --- a/src/pcm_mix.c +++ b/src/pcm_mix.c @@ -37,7 +37,8 @@ pcm_add_8(int8_t *buffer1, const int8_t *buffer2, int32_t sample2 = *buffer2++; sample1 = ((sample1 * volume1 + sample2 * volume2) + - pcm_dither() + PCM_VOLUME_1 / 2) / PCM_VOLUME_1; + pcm_volume_dither() + PCM_VOLUME_1 / 2) + / PCM_VOLUME_1; *buffer1++ = pcm_range(sample1, 8); --num_samples; @@ -53,7 +54,8 @@ pcm_add_16(int16_t *buffer1, const int16_t *buffer2, int32_t sample2 = *buffer2++; sample1 = ((sample1 * volume1 + sample2 * volume2) + - pcm_dither() + PCM_VOLUME_1 / 2) / PCM_VOLUME_1; + pcm_volume_dither() + PCM_VOLUME_1 / 2) + / PCM_VOLUME_1; *buffer1++ = pcm_range(sample1, 16); --num_samples; @@ -69,7 +71,8 @@ pcm_add_24(int32_t *buffer1, const int32_t *buffer2, int64_t sample2 = *buffer2++; sample1 = ((sample1 * volume1 + sample2 * volume2) + - pcm_dither() + PCM_VOLUME_1 / 2) / PCM_VOLUME_1; + pcm_volume_dither() + PCM_VOLUME_1 / 2) + / PCM_VOLUME_1; *buffer1++ = pcm_range(sample1, 24); --num_samples; diff --git a/src/pcm_volume.c b/src/pcm_volume.c index af7916b1f..7f032a5f3 100644 --- a/src/pcm_volume.c +++ b/src/pcm_volume.c @@ -34,7 +34,8 @@ pcm_volume_change_8(int8_t *buffer, unsigned num_samples, int volume) while (num_samples > 0) { int32_t sample = *buffer; - sample = (sample * volume + pcm_dither() + PCM_VOLUME_1 / 2) + sample = (sample * volume + pcm_volume_dither() + + PCM_VOLUME_1 / 2) / PCM_VOLUME_1; *buffer++ = pcm_range(sample, 8); @@ -48,7 +49,8 @@ pcm_volume_change_16(int16_t *buffer, unsigned num_samples, int volume) while (num_samples > 0) { int32_t sample = *buffer; - sample = (sample * volume + pcm_dither() + PCM_VOLUME_1 / 2) + sample = (sample * volume + pcm_volume_dither() + + PCM_VOLUME_1 / 2) / PCM_VOLUME_1; *buffer++ = pcm_range(sample, 16); @@ -62,7 +64,8 @@ pcm_volume_change_24(int32_t *buffer, unsigned num_samples, int volume) while (num_samples > 0) { int64_t sample = *buffer; - sample = (sample * volume + pcm_dither() + PCM_VOLUME_1 / 2) + sample = (sample * volume + pcm_volume_dither() + + PCM_VOLUME_1 / 2) / PCM_VOLUME_1; *buffer++ = pcm_range(sample, 24); diff --git a/src/pcm_volume.h b/src/pcm_volume.h index ec6c2ea4e..4c1b45352 100644 --- a/src/pcm_volume.h +++ b/src/pcm_volume.h @@ -41,7 +41,7 @@ pcm_float_to_volume(float volume) } static inline int -pcm_dither(void) +pcm_volume_dither(void) { static unsigned long state; uint32_t r; |