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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4716 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale
2007-03-21 18:50:51 +00:00
parent 2da36dea17
commit 573058c6d3
3 changed files with 30 additions and 1 deletions
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21
src/switch_resample.c
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@@ -183,6 +183,27 @@ SWITCH_DECLARE(void) switch_swap_linear(int16_t *buf, int len)
}
}
SWITCH_DECLARE(void) switch_generate_sln_silence(int16_t *data, uint32_t samples, uint32_t divisor)
{
int16_t rnd, x,i;
uint32_t sum_rnd = 0;
assert(divisor);
for(i = 0; i < samples; i++, sum_rnd = 0) {
for(x = 0; x < 7; x++) {
rnd = (int16_t) (rand() * sizeof(int16_t));
sum_rnd += rnd;
}
switch_normalize_to_16bit(sum_rnd);
*data = (int16_t) sum_rnd;
*data /= (int)divisor;
data++;
}
}
SWITCH_DECLARE(void) switch_change_sln_volume(int16_t *data, uint32_t samples, int32_t vol)
{
double newrate = 0;