Changeset 628 for pjproject/trunk/pjmedia/src/pjmedia-codec/speex/misc.c

Timestamp:

Jul 26, 2006 5:04:54 PM (18 years ago)

Author:

bennylp

Message:

• Bring speex codec up to date with their SVN trunk
• Speex codec should work in FIXED_POINT mode when PJ_HAS_FLOATING_POINT is set to zero.
• ulaw2linear will return zero if zero is given (this would make the VAD works better, and it also fixed click noise when call is established/hangup).

File:

• pjproject/trunk/pjmedia/src/pjmedia-codec/speex/misc.c (modified) (2 diffs)

pjproject/trunk/pjmedia/src/pjmedia-codec/speex/misc.c

@@ -197 +197 @@
 
 #ifdef FIXED_POINT
-spx_word32_t speex_rand(spx_word16_t std, spx_int32_t *seed)
+spx_word16_t speex_rand(spx_word16_t std, spx_int32_t *seed)
 {
    spx_word32_t res;
    *seed = 1664525 * *seed + 1013904223;
    res = MULT16_16(EXTRACT16(SHR32(*seed,16)),std);
-   return SUB32(res, SHR(res, 3));
+   return PSHR32(SUB32(res, SHR(res, 3)),14);
 }
 #else
@@ -217 +217 @@
 #endif
 
-void speex_rand_vec(float std, spx_sig_t *data, int len)
-{
-   int i;
-   for (i=0;i<len;i++)
-      data[i]+=SIG_SCALING*3*std*((((float)rand())/RAND_MAX)-.5);
-}
-
-
-/*float speex_rand(float std)
-{
-   return 3*std*((((float)rand())/RAND_MAX)-.5);
-}*/
-
 #ifndef OVERRIDE_SPEEX_PUTC
 void _speex_putc(int ch, void *file)