diff options
Diffstat (limited to 'apps/dsp.c')
| -rw-r--r-- | apps/dsp.c | 15 |
1 files changed, 8 insertions, 7 deletions
@@ -706,13 +706,14 @@ void stereo_width_set(int value) { long width, straight, cross; - width = value*0x7fffff/100; + width = value * 0x7fffff / 100; if (value <= 100) { - straight = (0x7fffff + width)/2; + straight = (0x7fffff + width) / 2; cross = straight - width; } else { - straight = 0x7fffff; - cross = 0x7fffff - ((int64_t)(2*width) << 23)/(0x7fffff + width); + /* straight = (1 + width) / (2 * width) */ + straight = ((int64_t)(0x7fffff + width) << 22) / width; + cross = straight - 0x7fffff; } sw_gain = straight << 8; sw_cross = cross << 8; @@ -752,10 +753,10 @@ static void channels_process(int32_t **src, int num) break; case SOUND_CHAN_KARAOKE: for (i = 0; i < num; i++) { - int32_t left_sample = sl[i]; + int32_t left_sample = sl[i]/2; - sl[i] -= sr[i]; - sr[i] -= left_sample; + sl[i] = left_sample - sr[i]/2; + sr[i] = sr[i]/2 - left_sample; } break; } |