\
if (q > switch_bits) { /* exp golomb */ \
bits = exp_order - switch_bits + (q<<1); \
+ if (bits > MIN_CACHE_BITS) \
+ return AVERROR_INVALIDDATA; \
val = SHOW_UBITS(re, gb, bits) - (1 << exp_order) + \
((switch_bits + 1) << rice_order); \
SKIP_BITS(re, gb, bits); \
static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70};
-static av_always_inline void decode_dc_coeffs(GetBitContext *gb, int16_t *out,
+static av_always_inline int decode_dc_coeffs(GetBitContext *gb, int16_t *out,
int blocks_per_slice)
{
int16_t prev_dc;
out[0] = prev_dc;
}
CLOSE_READER(re, gb);
+ return 0;
}
// adaptive codebook switching lut according to previous run/level values
init_get_bits(&gb, buf, buf_size << 3);
- decode_dc_coeffs(&gb, blocks, blocks_per_slice);
+ if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
+ return ret;
if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
return ret;
init_get_bits(&gb, buf, buf_size << 3);
- decode_dc_coeffs(&gb, blocks, blocks_per_slice);
+ if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
+ return ret;
if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
return ret;