Author: anthm Date: Wed Mar 21 14:50:51 2007 New Revision: 4716 Modified: freeswitch/trunk/src/include/switch_resample.h freeswitch/trunk/src/mod/applications/mod_conference/mod_conference.c freeswitch/trunk/src/switch_resample.c Log: shhhh Modified: freeswitch/trunk/src/include/switch_resample.h ============================================================================== --- freeswitch/trunk/src/include/switch_resample.h (original) +++ freeswitch/trunk/src/include/switch_resample.h Wed Mar 21 14:50:51 2007 @@ -155,6 +155,14 @@ SWITCH_DECLARE(void) switch_swap_linear(int16_t *buf, int len); /*! + \brief Generate static noise + \param data the audio data buffer + \param samples the number of 2 byte samples + \param divisor the volume factor + */ +SWITCH_DECLARE(void) switch_generate_sln_silence(int16_t *data, uint32_t samples, uint32_t divisor); + +/*! \brief Change the volume of a signed linear audio frame \param data the audio data \param samples the number of 2 byte samples Modified: freeswitch/trunk/src/mod/applications/mod_conference/mod_conference.c ============================================================================== --- freeswitch/trunk/src/mod/applications/mod_conference/mod_conference.c (original) +++ freeswitch/trunk/src/mod/applications/mod_conference/mod_conference.c Wed Mar 21 14:50:51 2007 @@ -1696,7 +1696,7 @@ } else { if (switch_test_flag(member, MFLAG_WASTE_BANDWIDTH)) { - memset(write_frame.data, 255, bytes); + switch_generate_sln_silence(write_frame.data, samples, 1400); write_frame.datalen = bytes; write_frame.samples = samples; write_frame.timestamp = timer.samplecount; Modified: freeswitch/trunk/src/switch_resample.c ============================================================================== --- freeswitch/trunk/src/switch_resample.c (original) +++ freeswitch/trunk/src/switch_resample.c Wed Mar 21 14:50:51 2007 @@ -183,6 +183,27 @@ } } +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;