static const uint16_t table_mb_intra[64][2];
-static inline int decode210(GetBitContext *gb){
- if (get_bits1(gb))
- return 0;
- else
- return 2 - get_bits1(gb);
-}
-
/**
* Init VC-1 specific tables and VC1Context members
* @param v The VC1Context to initialize
if (v->profile == PROFILE_ADVANCED)
{
+ v->zz_8x4 = ff_vc1_adv_progressive_8x4_zz;
+ v->zz_4x8 = ff_vc1_adv_progressive_4x8_zz;
return decode_sequence_header_adv(v, gb);
}
else
{
+ v->zz_8x4 = ff_vc1_simple_progressive_8x4_zz;
+ v->zz_4x8 = ff_vc1_simple_progressive_4x8_zz;
v->res_sm = get_bits(gb, 2); //reserved
if (v->res_sm)
{
/* Quantizer stuff */
pqindex = get_bits(gb, 5);
+ if(!pqindex) return -1;
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
v->pq = ff_vc1_pquant_table[0][pqindex];
else
}
}
pqindex = get_bits(gb, 5);
+ if(!pqindex) return -1;
v->pqindex = pqindex;
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
v->pq = ff_vc1_pquant_table[0][pqindex];
i += skip;
if(i > 31)
break;
- if(v->profile < PROFILE_ADVANCED)
- idx = ff_vc1_simple_progressive_8x4_zz[i++];
- else
- idx = ff_vc1_adv_progressive_8x4_zz[i++];
- block[idx + off] = value * scale;
+ idx = v->zz_8x4[i++]+off;
+ block[idx] = value * scale;
if(!v->pquantizer)
- block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
+ block[idx] += (block[idx] < 0) ? -mquant : mquant;
}
if(!(subblkpat & (1 << (1 - j))) && !skip_block)
s->dsp.vc1_inv_trans_8x4(dst + j*4*linesize, linesize, block + off);
i += skip;
if(i > 31)
break;
- if(v->profile < PROFILE_ADVANCED)
- idx = ff_vc1_simple_progressive_4x8_zz[i++];
- else
- idx = ff_vc1_adv_progressive_4x8_zz[i++];
- block[idx + off] = value * scale;
+ idx = v->zz_4x8[i++]+off;
+ block[idx] = value * scale;
if(!v->pquantizer)
- block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
+ block[idx] += (block[idx] < 0) ? -mquant : mquant;
}
if(!(subblkpat & (1 << (1 - j))) && !skip_block)
s->dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
/** Find VC-1 marker in buffer
* @return position where next marker starts or end of buffer if no marker found
*/
-static av_always_inline uint8_t* find_next_marker(uint8_t *src, uint8_t *end)
+static av_always_inline const uint8_t* find_next_marker(const uint8_t *src, const uint8_t *end)
{
uint32_t mrk = 0xFFFFFFFF;
return end;
}
-static av_always_inline int vc1_unescape_buffer(uint8_t *src, int size, uint8_t *dst)
+static av_always_inline int vc1_unescape_buffer(const uint8_t *src, int size, uint8_t *dst)
{
int dsize = 0, i;
av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
}
} else { // VC1/WVC1
- uint8_t *start = avctx->extradata, *end = avctx->extradata + avctx->extradata_size;
- uint8_t *next; int size, buf2_size;
+ const uint8_t *start = avctx->extradata;
+ uint8_t *end = avctx->extradata + avctx->extradata_size;
+ const uint8_t *next;
+ int size, buf2_size;
uint8_t *buf2 = NULL;
int seq_inited = 0, ep_inited = 0;
*/
static int vc1_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ const uint8_t *buf, int buf_size)
{
VC1Context *v = avctx->priv_data;
MpegEncContext *s = &v->s;
buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
- uint8_t *start, *end, *next;
+ const uint8_t *start, *end, *next;
int size;
next = buf;
}
}
}else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
- uint8_t *divider;
+ const uint8_t *divider;
divider = find_next_marker(buf, buf + buf_size);
if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
av_freep(&v->acpred_plane);
av_freep(&v->over_flags_plane);
av_freep(&v->mb_type_base);
+ ff_intrax8_common_end(&v->x8);
return 0;
}