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shorten: check output buffer size before decoding

This commit is contained in:
Justin Ruggles 2011-09-16 18:01:28 -04:00
parent bd7f7d6c78
commit 882dafe9b6
1 changed files with 7 additions and 1 deletions
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8
libavcodec/shorten.c
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@ -550,9 +550,15 @@ static int shorten_decode_frame(AVCodecContext *avctx,
/* if this is the last channel in the block, output the samples */
s->cur_chan++;
if (s->cur_chan == s->channels) {
int out_size = s->blocksize * s->channels *
av_get_bytes_per_sample(avctx->sample_fmt);
if (*data_size < out_size) {
av_log(avctx, AV_LOG_ERROR, "Output buffer is too small\n");
return AVERROR(EINVAL);
}
samples = interleave_buffer(samples, s->channels, s->blocksize, s->decoded);
s->cur_chan = 0;
*data_size = (int8_t *)samples - (int8_t *)data;
*data_size = out_size;
} else {
*data_size = 0;
}