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zerocodec: Fix memleak in decode_frame 

If there was a failure inflating, or reinitializing
the zstream, the current frame's buffer would be lost.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This commit is contained in:
Derek Buitenhuis 2012-08-03 22:13:43 -04:00
parent 29facc1e91
commit 616fd4fe5e
1 changed files with 6 additions and 5 deletions
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11
libavcodec/zerocodec.c
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@ -51,17 +51,17 @@ static int zerocodec_decode_frame(AVCodecContext *avctx, void *data,
pic->pict_type = AV_PICTURE_TYPE_P;
}
if (avctx->get_buffer(avctx, pic) < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
return AVERROR(ENOMEM);
}
zret = inflateReset(zstream);
if (zret != Z_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not reset inflate: %d.\n", zret);
return AVERROR_INVALIDDATA;
}
if (avctx->get_buffer(avctx, pic) < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
return AVERROR(ENOMEM);
}
zstream->next_in = avpkt->data;
zstream->avail_in = avpkt->size;
@ -78,6 +78,7 @@ static int zerocodec_decode_frame(AVCodecContext *avctx, void *data,
zret = inflate(zstream, Z_SYNC_FLUSH);
if (zret != Z_OK && zret != Z_STREAM_END) {
avctx->release_buffer(avctx, pic);
av_log(avctx, AV_LOG_ERROR,
"Inflate failed with return code: %d.\n", zret);
return AVERROR_INVALIDDATA;