From 530bca94390adb946f21c767f5eafda522c826b1 Mon Sep 17 00:00:00 2001 From: "Ronald S. Bultje" Date: Wed, 7 Jan 2009 14:41:40 +0000 Subject: [PATCH] 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. Originally committed as revision 16467 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/rdt.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/libavformat/rdt.c b/libavformat/rdt.c index bbf930c..9d6e193 100644 --- a/libavformat/rdt.c +++ b/libavformat/rdt.c @@ -428,6 +428,19 @@ rdt_parse_sdp_line (AVFormatContext *s, int st_index, 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 *s, AVStream *orig_st, st = add_dstream(s, orig_st); else st = orig_st; + real_parse_asm_rule(st, p, end); n_rules++; } p = end + 1; -- 2.7.4