diff options
| author | Laurent Aimar <fenrir@videolan.org> | 2011-09-26 22:18:29 +0000 |
|---|---|---|
| committer | Reinhard Tartler <siretart@tauware.de> | 2012-03-18 17:50:30 +0100 |
| commit | d646cce15f140730f288c1a38a79dc7232b31e69 (patch) | |
| tree | 31499f9381b1c15e61e48c0a982f96b8350f5616 | |
| parent | 04b71cdedd7421d09e12600d7999fab87d35a908 (diff) | |
| download | ffmpeg-d646cce15f140730f288c1a38a79dc7232b31e69.tar.gz | |
wavpack: Reset internal state on corrupted blocks
wavpack_decode_block() supposes that it is called back with the exact
same buffer unless it has returned with an error. With multi-channels
files, wavpack_decode_frame() was breaking this assumption.
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
(cherry picked from commit 2c6cf1394096d08396faadc6e7c0b404fd6df006)
Signed-off-by: Anton Khirnov <anton@khirnov.net>
| -rw-r--r-- | libavcodec/wavpack.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c index 155633f3ac..43e191801a 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -1173,6 +1173,15 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no, return samplecount * bpp; } +static void wavpack_decode_flush(AVCodecContext *avctx) +{ + WavpackContext *s = avctx->priv_data; + int i; + + for (i = 0; i < s->fdec_num; i++) + wv_reset_saved_context(s->fdec[i]); +} + static int wavpack_decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt) @@ -1205,11 +1214,14 @@ static int wavpack_decode_frame(AVCodecContext *avctx, if(frame_size < 0 || frame_size > buf_size){ av_log(avctx, AV_LOG_ERROR, "Block %d has invalid size (size %d vs. %d bytes left)\n", s->block, frame_size, buf_size); + wavpack_decode_flush(avctx); return -1; } if((samplecount = wavpack_decode_block(avctx, s->block, data, - data_size, buf, frame_size)) < 0) + data_size, buf, frame_size)) < 0) { + wavpack_decode_flush(avctx); return -1; + } s->block++; buf += frame_size; buf_size -= frame_size; } |