diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2013-07-01 23:38:08 +0200 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2013-09-13 15:26:39 +0200 |
| commit | fe8b5a37d5856769e91c159b83c19578ad316f61 (patch) | |
| tree | c9d548647bff254a515fa3f3da0a71528392d033 | |
| parent | 42ad4178fd2dfa38a9a713419641c2ff41a85e98 (diff) | |
| download | ffmpeg-fe8b5a37d5856769e91c159b83c19578ad316f61.tar.gz | |
rmdec: Use the AVIOContext given as parameter in rm_read_metadata()
This fixes crashes when playing back certain RealRTSP streams.
When invoked from the RTP depacketizer, the full realmedia
demuxer isn't invoked, but only certain functions from it, where
a separate AVIOContext is passed in as parameter (for the buffer
containing the data to parse). The functions called from within
those entry points should only be using that parameter, not
s->pb. In the depacketizer case, s is the RTSP context, where ->pb
is null.
Cc: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit d35b6cd3775456a23b63e73316e244b671caa02f)
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
| -rw-r--r-- | libavformat/rmdec.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/libavformat/rmdec.c b/libavformat/rmdec.c index 405162e8ca..37e18f02ac 100644 --- a/libavformat/rmdec.c +++ b/libavformat/rmdec.c @@ -107,13 +107,13 @@ static int rm_read_extradata(AVIOContext *pb, AVCodecContext *avctx, unsigned si return 0; } -static void rm_read_metadata(AVFormatContext *s, int wide) +static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide) { char buf[1024]; int i; for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) { - int len = wide ? avio_rb16(s->pb) : avio_r8(s->pb); - get_strl(s->pb, buf, sizeof(buf), len); + int len = wide ? avio_rb16(pb) : avio_r8(pb); + get_strl(pb, buf, sizeof(buf), len); av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0); } } @@ -143,7 +143,7 @@ static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb, int header_size = avio_rb16(pb); int64_t startpos = avio_tell(pb); avio_skip(pb, 14); - rm_read_metadata(s, 0); + rm_read_metadata(s, pb, 0); if ((startpos + header_size) >= avio_tell(pb) + 2) { // fourcc (should always be "lpcJ") avio_r8(pb); @@ -288,7 +288,7 @@ static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb, avio_r8(pb); avio_r8(pb); avio_r8(pb); - rm_read_metadata(s, 0); + rm_read_metadata(s, pb, 0); } } return 0; @@ -474,7 +474,7 @@ static int rm_read_header(AVFormatContext *s, AVFormatParameters *ap) flags = avio_rb16(pb); /* flags */ break; case MKTAG('C', 'O', 'N', 'T'): - rm_read_metadata(s, 1); + rm_read_metadata(s, pb, 1); break; case MKTAG('M', 'D', 'P', 'R'): st = avformat_new_stream(s, NULL); |