MpegEncContext * const s = avctx->priv_data;
VASliceParameterBufferMPEG2 *slice_param;
GetBitContext gb;
- uint32_t start_code, quantiser_scale_code, intra_slice_flag, macroblock_offset;
+ uint32_t quantiser_scale_code, intra_slice_flag, macroblock_offset;
av_dlog(avctx, "vaapi_mpeg2_decode_slice(): buffer %p, size %d\n", buffer, size);
/* Determine macroblock_offset */
init_get_bits(&gb, buffer, 8 * size);
- start_code = get_bits(&gb, 32);
- assert((start_code & 0xffffff00) == 0x00000100);
+ if (get_bits_long(&gb, 32) >> 8 != 1) /* start code */
+ return AVERROR_INVALIDDATA;
quantiser_scale_code = get_bits(&gb, 5);
intra_slice_flag = get_bits1(&gb);
if (intra_slice_flag) {