[FFmpeg-cvslog] r16467 - trunk/libavformat/rdt.c
rbultje
subversion
Wed Jan 7 15:41:41 CET 2009
Author: rbultje
Date: Wed Jan 7 15:41:40 2009
New Revision: 16467
Log:
Parse the bitrate field in the ASMRuleBook ("AverageBandwidth") to fill in
the AVStream->AVCodecContext->bit_rate field, which is not in the MDPR block
(the "OpaqueData" SDP field). This allows clients to choose streams based
on their bitrate, which is what most network-players base stream selection
on. (Of course, it is also possible to select based on anything else, that
is entirely up to the client.) See "[PATCH] rdt.c: ASM rulebook bitrate
reading" thread on mailinglist.
Modified:
trunk/libavformat/rdt.c
Modified: trunk/libavformat/rdt.c
==============================================================================
--- trunk/libavformat/rdt.c Wed Jan 7 15:38:44 2009 (r16466)
+++ trunk/libavformat/rdt.c Wed Jan 7 15:41:40 2009 (r16467)
@@ -428,6 +428,19 @@ rdt_parse_sdp_line (AVFormatContext *s,
return 0;
}
+static void
+real_parse_asm_rule(AVStream *st, const char *p, const char *end)
+{
+ do {
+ /* can be either averagebandwidth= or AverageBandwidth= */
+ if (sscanf(p, " %*1[Aa]verage%*1[Bb]andwidth=%d", &st->codec->bit_rate) == 1)
+ break;
+ if (!(p = strchr(p, ',')) || p > end)
+ p = end;
+ p++;
+ } while (p < end);
+}
+
static AVStream *
add_dstream(AVFormatContext *s, AVStream *orig_st)
{
@@ -473,6 +486,7 @@ real_parse_asm_rulebook(AVFormatContext
st = add_dstream(s, orig_st);
else
st = orig_st;
+ real_parse_asm_rule(st, p, end);
n_rules++;
}
p = end + 1;
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