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play files saying vol level in conf in lieu of making a function of say modules to return file_string urls (we need that)

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Anthony Minessale
2011-02-25 18:09:58 -06:00
parent cf827e8f22
commit 94b680fb45
2 changed files with 116 additions and 39 deletions
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26
src/switch_resample.c
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@@ -309,22 +309,26 @@ SWITCH_DECLARE(void) switch_change_sln_volume_granular(int16_t *data, uint32_t s
SWITCH_DECLARE(void) switch_change_sln_volume(int16_t *data, uint32_t samples, int32_t vol)
{
double newrate = 0;
int div = 0;
double pos[4] = {1.3, 2.3, 3.3, 4.3};
double neg[4] = {.80, .60, .40, .20};
double *chart;
uint32_t i;
if (vol == 0) return;
switch_normalize_volume(vol);
if (vol > 0) {
vol++;
} else if (vol < 0) {
vol--;
chart = pos;
} else {
chart = neg;
}
i = abs(vol) - 1;
switch_assert(i < 4);
newrate = vol * 1.3;
if (vol < 0) {
newrate *= -1;
div++;
}
newrate = chart[i];
if (newrate) {
int32_t tmp;
@@ -332,7 +336,7 @@ SWITCH_DECLARE(void) switch_change_sln_volume(int16_t *data, uint32_t samples, i
int16_t *fp = data;
for (x = 0; x < samples; x++) {
tmp = (int32_t) (div ? fp[x] / newrate : fp[x] * newrate);
tmp = (int32_t) (fp[x] * newrate);
switch_normalize_to_16bit(tmp);
fp[x] = (int16_t) tmp;
}