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document how the RTP marker bit is passed for video frames,

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and why this does not overwrite useful information.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@77248 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Luigi Rizzo
2007-07-26 05:35:42 +00:00
parent f1aadc8161
commit 5a96f8aa72
1 changed files with 5 additions and 0 deletions
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5
main/rtp.c
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@@ -1598,6 +1598,11 @@ struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
rtp->lastividtimestamp = timestamp; rtp->lastividtimestamp = timestamp;
rtp->f.delivery.tv_sec = 0; rtp->f.delivery.tv_sec = 0;
rtp->f.delivery.tv_usec = 0; rtp->f.delivery.tv_usec = 0;
/* Pass the RTP marker bit as bit 0 in the subclass field.
* This is ok because subclass is actually a bitmask, and
* the low bits represent audio formats, that are not
* involved here since we deal with video.
*/
if (mark) if (mark)
rtp->f.subclass |= 0x1; rtp->f.subclass |= 0x1;
} else { } else {