shhhh

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4716 d0543943-73ff-0310-b7d9-9358b9ac24b2

diff --git a/src/include/switch_resample.h b/src/include/switch_resample.h
index c82823071951367249149c2fbc564ad624b10c11..d2ba8a42bba7f9061de8f7320324bd2661ab7c3a 100644 (file)
--- a/src/include/switch_resample.h
+++ b/src/include/switch_resample.h
@@ -154,6 +154,14 @@ SWITCH_DECLARE(int) switch_short_to_float(short *s, float *f, int len);
  */
 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

diff --git a/src/mod/applications/mod_conference/mod_conference.c b/src/mod/applications/mod_conference/mod_conference.c
index 189b2394a5dce8194a4b3c06614ac2b757d1c709..5d04ae9f0e678b88c265970e90acd54b3598f10f 100644 (file)
--- a/src/mod/applications/mod_conference/mod_conference.c
+++ b/src/mod/applications/mod_conference/mod_conference.c
@@ -1696,7 +1696,7 @@ static void conference_loop_output(conference_member_t *member)
                                
                        } 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;

diff --git a/src/switch_resample.c b/src/switch_resample.c
index d1bf50492b5e742757c38da295059855793f7538..af6321fa9fd2f87828bf158b98fbb125984a4d11 100644 (file)
--- a/src/switch_resample.c
+++ b/src/switch_resample.c
@@ -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;