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| author | Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> | 2015-04-24 00:01:43 +0200 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2015-05-08 11:10:51 +0200 |
| commit | 243e8443cd9e83c887e3f5edf09a169e7783d14e (patch) | |
| tree | f45f797c979ed3f0acf72b946afb8b36207d5e16 /libavcodec | |
| parent | 295e05a762332c5edcc84c325e94457815a51b5c (diff) | |
| download | ffmpeg-243e8443cd9e83c887e3f5edf09a169e7783d14e.tar.gz | |
alac: Reject rice_limit 0 if compression is used
If in compression mode rice_limit = 0 leads to call
`show_bits(gb, k)` in `decode_scalar` with k = 0.
Request a sample in case it is valid and it should be accepted.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
CC: libav-stable@libav.org
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/alac.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libavcodec/alac.c b/libavcodec/alac.c index 48903a671b..9579e18185 100644 --- a/libavcodec/alac.c +++ b/libavcodec/alac.c @@ -307,6 +307,12 @@ static int decode_element(AVCodecContext *avctx, AVFrame *frame, int ch_index, int lpc_quant[2]; int rice_history_mult[2]; + if (!alac->rice_limit) { + avpriv_request_sample(alac->avctx, + "Compression with rice limit 0"); + return AVERROR(ENOSYS); + } + decorr_shift = get_bits(&alac->gb, 8); decorr_left_weight = get_bits(&alac->gb, 8); |