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codecs: Add iLBC 20.

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Asterisk already supported iLBC 30. This change adds iLBC 20. Now, Asterisk
defaults to iLBC 20 but falls back to iLBC 30, when the remote party requests
this.

ASTERISK-26218 #close
ASTERISK-26221 #close
Reported by: Aaron Meriwether

Change-Id: I07f523a3aa1338bb5217a1bf69c1eeb92adedffa
This commit is contained in:
Alexander Traud
2016-07-19 20:39:38 +02:00
parent 943bb48b59
commit 8fb807009f
6 changed files with 252 additions and 36 deletions
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7
codecs/ex_ilbc.h
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@@ -7,6 +7,9 @@
*
*/
#include "asterisk/format_cache.h" /* for ast_format_ilbc */
#include "asterisk/frame.h" /* for ast_frame, etc */
static uint8_t ex_ilbc[] = {
0xff, 0xa0, 0xff, 0xfa, 0x0f, 0x60, 0x12, 0x11, 0xa2, 0x47,
0x22, 0x8c, 0x00, 0x00, 0x01, 0x02, 0x80, 0x43, 0xa0, 0x40,
@@ -20,8 +23,8 @@ static struct ast_frame *ilbc_sample(void)
static struct ast_frame f = {
.frametype = AST_FRAME_VOICE,
.datalen = sizeof(ex_ilbc),
/* All frames are 30 ms long */
.samples = ILBC_SAMPLES,
/* example frames are default long (30 ms) */
.samples = 240,
.mallocd = 0,
.offset = 0,
.src = __PRETTY_FUNCTION__,