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| author | Marton Balint <cus@passwd.hu> | 2011-02-19 17:33:15 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-02-20 19:05:46 +0100 |
| commit | 91861ce25c7f19c38afdb0f115bf90118fc19428 (patch) | |
| tree | 9c735f5c6fac7514cd5c05380b5e9718378e7b63 | |
| parent | 6a717eb4aaf6f5cd81401b33e3ea36080b010d76 (diff) | |
| download | ffmpeg-91861ce25c7f19c38afdb0f115bf90118fc19428.tar.gz | |
MMS: also discover streams in extended stream properties object
Allows playback of nonprimary audio streams in multiple bitrate sources,
such as mmsh://wmscr1.dr.dk/e02ch03m
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 74d6871d6244865b5863a01c3dab16a2f06a1706)
| -rw-r--r-- | libavformat/mms.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/libavformat/mms.c b/libavformat/mms.c index d995a43a0e..b541208e31 100644 --- a/libavformat/mms.c +++ b/libavformat/mms.c @@ -115,6 +115,34 @@ int ff_mms_asf_header_parser(MMSContext *mms) "Corrupt stream (too many A/V streams)\n"); return AVERROR_INVALIDDATA; } + } else if (!memcmp(p, ff_asf_ext_stream_header, sizeof(ff_asf_guid))) { + if (end - p >= 88) { + int stream_count = AV_RL16(p + 84), ext_len_count = AV_RL16(p + 86); + uint64_t skip_bytes = 88; + while (stream_count--) { + if (end - p < skip_bytes + 4) { + av_log(NULL, AV_LOG_ERROR, + "Corrupt stream (next stream name length is not in the buffer)\n"); + return AVERROR_INVALIDDATA; + } + skip_bytes += 4 + AV_RL16(p + skip_bytes + 2); + } + while (ext_len_count--) { + if (end - p < skip_bytes + 22) { + av_log(NULL, AV_LOG_ERROR, + "Corrupt stream (next extension system info length is not in the buffer)\n"); + return AVERROR_INVALIDDATA; + } + skip_bytes += 22 + AV_RL32(p + skip_bytes + 18); + } + if (end - p < skip_bytes) { + av_log(NULL, AV_LOG_ERROR, + "Corrupt stream (the last extension system info length is invalid)\n"); + return AVERROR_INVALIDDATA; + } + if (chunksize - skip_bytes > 24) + chunksize = skip_bytes; + } } else if (!memcmp(p, ff_asf_head1_guid, sizeof(ff_asf_guid))) { chunksize = 46; // see references [2] section 3.4. This should be set 46. } |