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even though Asterisk explicitly requests that endpoints using G.729 do *not* use Annex B (silence detection and comfort noise generation) some do anyway; the transcoder card interface does not currently work properly with CNG frames, so trim off the CNG before sending the data

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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@91870 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
2007-12-07 22:30:59 +00:00
parent b5463cd8d3
commit bcedcf5f8a
1 changed files with 9 additions and 0 deletions
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9
codecs/codec_zap.c
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@@ -146,6 +146,15 @@ static int zap_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
/* Copy at front of buffer */
hdr->srcoffset = 0;
/* if we get handed a G.729 frame that is not a multiple of
10 bytes (10 milliseconds), then it has a CNG frame and
we need to avoid sending that to the transcoder
*/
if ((f->subclass == AST_FORMAT_G729A) && ((f->datalen % 10) != 0)) {
f->datalen -= f->datalen % 10;
f->samples = f->datalen * 8;
}
if (hdr->srclen + f->datalen > sizeof(hdr->srcdata)) {
ast_log(LOG_WARNING, "Out of space for codec translation!\n");
return -1;