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fix energy stuff to work better on 16khz calls

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6395 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale committed 2007-11-24 21:48:25 +00:00
1 parent 9cbb6a56a6
commit 7d9e3c577a
3 files changed
+22 -6
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src/switch_rtp.c
+7 -2
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@@ -1375,8 +1375,13 @@ static int rtp_common_write(switch_rtp_t *rtp_session, void *data, uint32_t data
uint32_t energy = 0;
uint32_t x, y = 0, z = len / sizeof(int16_t);
uint32_t score = 0;
int divisor = 0;
if (z) {
if (!(divisor = rtp_session->vad_data.read_codec->implementation->actual_samples_per_second / 8000)) {
divisor = 1;
}
for (x = 0; x < z; x++) {
energy += abs(decoded[y]);
y += rtp_session->vad_data.read_codec->implementation->number_of_channels;
@@ -1385,7 +1390,7 @@ static int rtp_common_write(switch_rtp_t *rtp_session, void *data, uint32_t data
if (++rtp_session->vad_data.start_count < rtp_session->vad_data.start) {
send = 1;
} else {
score = energy / z;
score = (energy / (z / divisor));
if (score && (rtp_session->vad_data.bg_count < rtp_session->vad_data.bg_len)) {
rtp_session->vad_data.bg_level += score;
if (++rtp_session->vad_data.bg_count == rtp_session->vad_data.bg_len) {