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opusdec: Don't run vector_fmul_scalar on zero length arrays

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Fixes crashes on fuzzed files
Fixes Ticket4969 part2

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit b3e5f15b95)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Kieran Kunhya 2015-10-26 23:09:44 +00:00 committed by Michael Niedermayer
parent 31a5bde1bf
commit cde478f526
1 changed files with 1 additions and 1 deletions
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2
libavcodec/opusdec.c
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@ -542,7 +542,7 @@ static int opus_decode_packet(AVCodecContext *avctx, void *data,
memset(frame->extended_data[i], 0, frame->linesize[0]);
}
if (c->gain_i) {
if (c->gain_i && decoded_samples > 0) {
c->fdsp->vector_fmul_scalar((float*)frame->extended_data[i],
(float*)frame->extended_data[i],
c->gain, FFALIGN(decoded_samples, 8));