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some notes for later

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@2445 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Brian West 2006-08-30 05:16:12 +00:00
parent f665cf6f72
commit fe9fb144dc
1 changed files with 25 additions and 1 deletions
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26
src/mod/codecs/mod_amr/mod_amr.c
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@ -34,6 +34,30 @@
#include "switch.h"
#include "amr.h"
/*
* Check section 8.1 of rfc3267 for possible sdp options.
*
* SDP Example
*
* a=fmtp:97 mode-set=0,2,5,7; mode-change-period=2; mode-change-neighbor=1
*
* Class A total speech
* Index Mode bits bits
* ----------------------------------------
* 0 AMR 4.75 42 95
* 1 AMR 5.15 49 103
* 2 AMR 5.9 55 118
* 3 AMR 6.7 58 134
* 4 AMR 7.4 61 148
* 5 AMR 7.95 75 159
* 6 AMR 10.2 65 204
* 7 AMR 12.2 81 244
* 8 AMR SID 39 39
*
* Table 1. The number of class A bits for the AMR codec.
*
*/
static const char modname[] = "mod_amr";
struct amr_context {
@ -80,7 +104,7 @@ static switch_status_t switch_amr_init(switch_codec_t *codec, switch_codec_flag_
return SWITCH_STATUS_FALSE;
} else {
context->mode = AMR_Mode;
context->mode = AMR_Mode; /* start in mode 7 */
if (encoding) {
context->encoder_state = Encoder_Interface_init(0);