HpelDSPContext hdsp;
GetBitContext gb;
AVFrame *prev;
+
+ uint8_t *pkt_swapped;
+ int pkt_swapped_allocated;
+
int width;
int height;
int frame_code;
/* swap some header bytes (why?) */
if (s->frame_code != 0x20) {
- uint32_t *src = (uint32_t *)(buf + 4);
+ uint32_t *src;
+
+ if (buf_size < 9 * 4) {
+ av_log(avctx, AV_LOG_ERROR, "Input packet too small\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ av_fast_malloc(s->pkt_swapped, &s->pkt_swapped_allocated,
+ buf_size);
+ if (!s->pkt_swapped)
+ return AVERROR(ENOMEM);
+
+ memcpy(s->pkt_swapped, buf, buf_size);
+ buf = s->pkt_swapped;
+ init_get_bits(&s->gb, buf, buf_size * 8);
+ skip_bits(&s->gb, 22);
+
+ src = (uint32_t *)(s->pkt_swapped + 4);
for (i = 0; i < 4; i++)
src[i] = ((src[i] << 16) | (src[i] >> 16)) ^ src[7 - i];
SVQ1Context *s = avctx->priv_data;
av_frame_free(&s->prev);
+ av_freep(&s->pkt_swapped);
return 0;
}