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| author | Luca Barbato <lu_zero@gentoo.org> | 2013-05-04 12:18:57 +0200 |
|---|---|---|
| committer | Reinhard Tartler <siretart@tauware.de> | 2013-05-07 21:32:09 +0200 |
| commit | 52ab9e898485b370a4da46febb91e1ba50a1c357 (patch) | |
| tree | 1eca21c9c604dc6d927821f4beb2f10cf154b760 | |
| parent | 5772cbb3435e06672a5c882c6f36101f407db818 (diff) | |
| download | ffmpeg-52ab9e898485b370a4da46febb91e1ba50a1c357.tar.gz | |
wav: Always seek to an even offset
RIFF chunks are aligned to 16bit according to the specification.
Bug-Id:500
CC:libav-stable@libav.org
(cherry picked from commit ac87eaf856e0fb51917266b899bb15d19b907baf)
Signed-off-by: Reinhard Tartler <siretart@tauware.de>
| -rw-r--r-- | libavformat/wavdec.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c index c9f7abbbcf..e9dda92f0b 100644 --- a/libavformat/wavdec.c +++ b/libavformat/wavdec.c @@ -50,6 +50,12 @@ static int64_t next_tag(AVIOContext *pb, uint32_t *tag) return avio_rl32(pb); } +/* RIFF chunks are always on a even offset. */ +static int64_t wav_seek_tag(AVIOContext *s, int64_t offset, int whence) +{ + return avio_seek(s, offset + (offset & 1), whence); +} + /* return the size of the found tag */ static int64_t find_tag(AVIOContext *pb, uint32_t tag1) { @@ -62,7 +68,7 @@ static int64_t find_tag(AVIOContext *pb, uint32_t tag1) size = next_tag(pb, &tag); if (tag == tag1) break; - avio_skip(pb, size); + wav_seek_tag(pb, size, SEEK_CUR); } return size; } @@ -301,7 +307,7 @@ static int wav_read_header(AVFormatContext *s) /* seek to next tag unless we know that we'll run into EOF */ if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) || - avio_seek(pb, next_tag_ofs, SEEK_SET) < 0) { + wav_seek_tag(pb, next_tag_ofs, SEEK_SET) < 0) { break; } } |