return 0;
}
+/* fill lookup tables for intensity compensation */
+#define INIT_LUT(lumscale, lumshift, luty, lutuv, chain) do {\
+ int scale, shift, i; \
+ if (!lumscale) { \
+ scale = -64; \
+ shift = (255 - lumshift * 2) << 6; \
+ if (lumshift > 31) \
+ shift += 128 << 6; \
+ } else { \
+ scale = lumscale + 32; \
+ if (lumshift > 31) \
+ shift = (lumshift - 64) << 6; \
+ else \
+ shift = lumshift << 6; \
+ } \
+ for (i = 0; i < 256; i++) { \
+ int iy = chain ? luty[i] : i; \
+ int iu = chain ? lutuv[i] : i; \
+ luty[i] = av_clip_uint8((scale * iy + shift + 32) >> 6); \
+ lutuv[i] = av_clip_uint8((scale * (iu - 128) + 128*64 + 32) >> 6); \
+ } \
+ }while(0)
+
+
+static void rotate_luts(VC1Context *v)
+{
+#define ROTATE(DEF, L, N, C, A) do {\
+ if (v->s.pict_type == AV_PICTURE_TYPE_BI || v->s.pict_type == AV_PICTURE_TYPE_B) {\
+ C = A;\
+ } else {\
+ DEF;\
+ memcpy(&tmp, &L , sizeof(tmp));\
+ memcpy(&L , &N , sizeof(tmp));\
+ memcpy(&N , &tmp, sizeof(tmp));\
+ C = N;\
+ }\
+ }while(0)
+
+ ROTATE(int tmp , v->last_use_ic, v->next_use_ic, v->curr_use_ic, v->aux_use_ic);
+ ROTATE(uint8_t tmp[2][256], v->last_luty , v->next_luty , v->curr_luty , v->aux_luty);
+ ROTATE(uint8_t tmp[2][256], v->last_lutuv, v->next_lutuv, v->curr_lutuv, v->aux_lutuv);
+
+ INIT_LUT(32, 0 , v->curr_luty[0] , v->curr_lutuv[0] , 0);
+ INIT_LUT(32, 0 , v->curr_luty[1] , v->curr_lutuv[1] , 0);
+ v->curr_use_ic = 0;
+}
+
int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
{
int pqindex, lowquant, status;
(v->s.pict_type == AV_PICTURE_TYPE_P) ? 'P' : ((v->s.pict_type == AV_PICTURE_TYPE_I) ? 'I' : 'B'),
pqindex, v->pq, v->halfpq, v->rangeredfrm);
- if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P)
- v->use_ic = 0;
+ if(v->first_pic_header_flag) {
+ rotate_luts(v);
+ }
switch (v->s.pict_type) {
case AV_PICTURE_TYPE_P:
lowquant = (v->pq > 12) ? 0 : 1;
v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
- int scale, shift, i;
v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
v->lumscale = get_bits(gb, 6);
v->lumshift = get_bits(gb, 6);
- v->use_ic = 1;
+ v->last_use_ic = 1;
/* fill lookup tables for intensity compensation */
- if (!v->lumscale) {
- scale = -64;
- shift = (255 - v->lumshift * 2) << 6;
- if (v->lumshift > 31)
- shift += 128 << 6;
- } else {
- scale = v->lumscale + 32;
- if (v->lumshift > 31)
- shift = (v->lumshift - 64) << 6;
- else
- shift = v->lumshift << 6;
- }
- for (i = 0; i < 256; i++) {
- v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
- v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
- }
+ INIT_LUT(v->lumscale, v->lumshift , v->last_luty[0] , v->last_lutuv[0] , 1);
+ INIT_LUT(v->lumscale, v->lumshift , v->last_luty[1] , v->last_lutuv[1] , 1);
}
v->qs_last = v->s.quarter_sample;
if (v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
return 0;
}
-/* fill lookup tables for intensity compensation */
-#define INIT_LUT(lumscale, lumshift, luty, lutuv) \
- if (!lumscale) { \
- scale = -64; \
- shift = (255 - lumshift * 2) << 6; \
- if (lumshift > 31) \
- shift += 128 << 6; \
- } else { \
- scale = lumscale + 32; \
- if (lumshift > 31) \
- shift = (lumshift - 64) << 6; \
- else \
- shift = lumshift << 6; \
- } \
- for (i = 0; i < 256; i++) { \
- luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6); \
- lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6); \
- }
-
int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
{
int pqindex, lowquant;
int status;
int mbmodetab, imvtab, icbptab, twomvbptab, fourmvbptab; /* useful only for debugging */
- int scale, shift, i; /* for initializing LUT for intensity compensation */
int field_mode, fcm;
v->numref=0;
if (fcm) {
if (fcm == ILACE_FIELD)
field_mode = 1;
- if (!v->warn_interlaced++)
- av_log(v->s.avctx, AV_LOG_ERROR,
- "Interlaced frames/fields support is incomplete\n");
}
} else {
fcm = PROGRESSIVE;
v->tff = get_bits1(gb);
v->rff = get_bits1(gb);
}
+ } else {
+ v->tff = 1;
}
if (v->panscanflag) {
avpriv_report_missing_feature(v->s.avctx, "Pan-scan");
if (v->postprocflag)
v->postproc = get_bits(gb, 2);
- if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P)
- v->use_ic = 0;
-
if (v->parse_only)
return 0;
+ if(v->first_pic_header_flag) {
+ rotate_luts(v);
+ }
+
switch (v->s.pict_type) {
case AV_PICTURE_TYPE_I:
case AV_PICTURE_TYPE_BI:
if (v->intcomp) {
v->lumscale = get_bits(gb, 6);
v->lumshift = get_bits(gb, 6);
- INIT_LUT(v->lumscale, v->lumshift, v->luty, v->lutuv);
+ INIT_LUT(v->lumscale, v->lumshift, v->last_luty[0], v->last_lutuv[0], 1);
+ INIT_LUT(v->lumscale, v->lumshift, v->last_luty[1], v->last_lutuv[1], 1);
+ v->last_use_ic = 1;
}
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
av_log(v->s.avctx, AV_LOG_DEBUG, "SKIPMB plane encoding: "
int mvmode2;
mvmode2 = get_unary(gb, 1, 3);
v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][mvmode2];
- if (v->field_mode)
- v->intcompfield = decode210(gb);
- v->lumscale = get_bits(gb, 6);
- v->lumshift = get_bits(gb, 6);
- INIT_LUT(v->lumscale, v->lumshift, v->luty, v->lutuv);
- if ((v->field_mode) && !v->intcompfield) {
+ if (v->field_mode) {
+ v->intcompfield = decode210(gb)^3;
+ } else
+ v->intcompfield = 3;
+
+ v->lumscale2 = v->lumscale = 32;
+ v->lumshift2 = v->lumshift = 0;
+ if (v->intcompfield & 1) {
+ v->lumscale = get_bits(gb, 6);
+ v->lumshift = get_bits(gb, 6);
+ }
+ if ((v->intcompfield & 2) && v->field_mode) {
v->lumscale2 = get_bits(gb, 6);
v->lumshift2 = get_bits(gb, 6);
- INIT_LUT(v->lumscale2, v->lumshift2, v->luty2, v->lutuv2);
+ } else if(!v->field_mode) {
+ v->lumscale2 = v->lumscale;
+ v->lumshift2 = v->lumshift;
+ }
+ if (v->field_mode && v->second_field) {
+ if (v->cur_field_type) {
+ INIT_LUT(v->lumscale , v->lumshift , v->curr_luty[v->cur_field_type^1], v->curr_lutuv[v->cur_field_type^1], 0);
+ INIT_LUT(v->lumscale2, v->lumshift2, v->last_luty[v->cur_field_type ], v->last_lutuv[v->cur_field_type ], 1);
+ } else {
+ INIT_LUT(v->lumscale2, v->lumshift2, v->curr_luty[v->cur_field_type^1], v->curr_lutuv[v->cur_field_type^1], 0);
+ INIT_LUT(v->lumscale , v->lumshift , v->last_luty[v->cur_field_type ], v->last_lutuv[v->cur_field_type ], 1);
+ }
+ v->next_use_ic = v->curr_use_ic = 1;
+ } else {
+ INIT_LUT(v->lumscale , v->lumshift , v->last_luty[0], v->last_lutuv[0], 1);
+ INIT_LUT(v->lumscale2, v->lumshift2, v->last_luty[1], v->last_lutuv[1], 1);
}
- v->use_ic = 1;
+ v->last_use_ic = 1;
}
v->qs_last = v->s.quarter_sample;
if (v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
projects / ffmpeg / blobdiff