Commit c466eb17 authored by Janne Grunau's avatar Janne Grunau
Browse files

flashsv: propagate inflateReset() errors

Fixes CID717493.
parent 6d556e83
......@@ -121,10 +121,11 @@ static av_cold int flashsv_decode_init(AVCodecContext *avctx)
}
static void flashsv2_prime(FlashSVContext *s, uint8_t *src,
int size, int unp_size)
static int flashsv2_prime(FlashSVContext *s, uint8_t *src,
int size, int unp_size)
{
z_stream zs;
int zret; // Zlib return code
zs.zalloc = NULL;
zs.zfree = NULL;
......@@ -144,13 +145,18 @@ static void flashsv2_prime(FlashSVContext *s, uint8_t *src,
deflate(&zs, Z_SYNC_FLUSH);
deflateEnd(&zs);
inflateReset(&s->zstream);
if ((zret = inflateReset(&s->zstream)) != Z_OK) {
av_log(s->avctx, AV_LOG_ERROR, "Inflate reset error: %d\n", zret);
return AVERROR_UNKNOWN;
}
s->zstream.next_in = s->deflate_block;
s->zstream.avail_in = s->deflate_block_size - zs.avail_out;
s->zstream.next_out = s->tmpblock;
s->zstream.avail_out = s->block_size * 3;
inflate(&s->zstream, Z_SYNC_FLUSH);
return 0;
}
static int flashsv_decode_block(AVCodecContext *avctx, AVPacket *avpkt,
......@@ -163,11 +169,14 @@ static int flashsv_decode_block(AVCodecContext *avctx, AVPacket *avpkt,
int k;
int ret = inflateReset(&s->zstream);
if (ret != Z_OK) {
//return -1;
av_log(avctx, AV_LOG_ERROR, "Inflate reset error: %d\n", ret);
return AVERROR_UNKNOWN;
}
if (s->zlibprime_curr || s->zlibprime_prev) {
flashsv2_prime(s, s->blocks[blk_idx].pos, s->blocks[blk_idx].size,
ret = flashsv2_prime(s, s->blocks[blk_idx].pos, s->blocks[blk_idx].size,
s->blocks[blk_idx].unp_size);
if (ret < 0)
return ret;
}
s->zstream.next_in = avpkt->data + get_bits_count(gb) / 8;
s->zstream.avail_in = block_size;
......
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