2 * VC-1 and WMV3 decoder
3 * Copyright (c) 2006-2007 Konstantin Shishkov
4 * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 * VC-1 and WMV3 decoder
31 #include "mpegvideo.h"
35 #include "vc1acdata.h"
36 #include "msmpeg4data.h"
38 #include "simple_idct.h"
40 #include "vdpau_internal.h"
45 #define MB_INTRA_VLC_BITS 9
48 static const uint16_t table_mb_intra[64][2];
51 static const uint16_t vlc_offs[] = {
52 0, 520, 552, 616, 1128, 1160, 1224, 1740, 1772, 1836, 1900, 2436,
53 2986, 3050, 3610, 4154, 4218, 4746, 5326, 5390, 5902, 6554, 7658, 8620,
54 9262, 10202, 10756, 11310, 12228, 15078
58 * Init VC-1 specific tables and VC1Context members
59 * @param v The VC1Context to initialize
62 static int vc1_init_common(VC1Context *v)
66 static VLC_TYPE vlc_table[15078][2];
68 v->hrd_rate = v->hrd_buffer = NULL;
73 INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
74 ff_vc1_bfraction_bits, 1, 1,
75 ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS);
76 INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
77 ff_vc1_norm2_bits, 1, 1,
78 ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS);
79 INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
80 ff_vc1_norm6_bits, 1, 1,
81 ff_vc1_norm6_codes, 2, 2, 556);
82 INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
83 ff_vc1_imode_bits, 1, 1,
84 ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS);
87 ff_vc1_ttmb_vlc[i].table = &vlc_table[vlc_offs[i*3+0]];
88 ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i*3+1] - vlc_offs[i*3+0];
89 init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
90 ff_vc1_ttmb_bits[i], 1, 1,
91 ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
92 ff_vc1_ttblk_vlc[i].table = &vlc_table[vlc_offs[i*3+1]];
93 ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i*3+2] - vlc_offs[i*3+1];
94 init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
95 ff_vc1_ttblk_bits[i], 1, 1,
96 ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
97 ff_vc1_subblkpat_vlc[i].table = &vlc_table[vlc_offs[i*3+2]];
98 ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i*3+3] - vlc_offs[i*3+2];
99 init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
100 ff_vc1_subblkpat_bits[i], 1, 1,
101 ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
105 ff_vc1_4mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i*3+9]];
106 ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i*3+10] - vlc_offs[i*3+9];
107 init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
108 ff_vc1_4mv_block_pattern_bits[i], 1, 1,
109 ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
110 ff_vc1_cbpcy_p_vlc[i].table = &vlc_table[vlc_offs[i*3+10]];
111 ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i*3+11] - vlc_offs[i*3+10];
112 init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
113 ff_vc1_cbpcy_p_bits[i], 1, 1,
114 ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
115 ff_vc1_mv_diff_vlc[i].table = &vlc_table[vlc_offs[i*3+11]];
116 ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i*3+12] - vlc_offs[i*3+11];
117 init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
118 ff_vc1_mv_diff_bits[i], 1, 1,
119 ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
122 ff_vc1_ac_coeff_table[i].table = &vlc_table[vlc_offs[i+21]];
123 ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i+22] - vlc_offs[i+21];
124 init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i],
125 &vc1_ac_tables[i][0][1], 8, 4,
126 &vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC);
133 v->mvrange = 0; /* 7.1.1.18, p80 */
138 /***********************************************************************/
140 * @defgroup vc1bitplane VC-1 Bitplane decoding
158 /** @} */ //imode defines
161 /** @} */ //Bitplane group
163 static void vc1_loop_filter_iblk(VC1Context *v, int pq)
165 MpegEncContext *s = &v->s;
167 if (!s->first_slice_line) {
168 v->vc1dsp.vc1_v_loop_filter16(s->dest[0], s->linesize, pq);
170 v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16*s->linesize, s->linesize, pq);
171 v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16*s->linesize+8, s->linesize, pq);
172 for(j = 0; j < 2; j++){
173 v->vc1dsp.vc1_v_loop_filter8(s->dest[j+1], s->uvlinesize, pq);
175 v->vc1dsp.vc1_h_loop_filter8(s->dest[j+1]-8*s->uvlinesize, s->uvlinesize, pq);
178 v->vc1dsp.vc1_v_loop_filter16(s->dest[0] + 8*s->linesize, s->linesize, pq);
180 if (s->mb_y == s->mb_height-1) {
182 v->vc1dsp.vc1_h_loop_filter16(s->dest[0], s->linesize, pq);
183 v->vc1dsp.vc1_h_loop_filter8(s->dest[1], s->uvlinesize, pq);
184 v->vc1dsp.vc1_h_loop_filter8(s->dest[2], s->uvlinesize, pq);
186 v->vc1dsp.vc1_h_loop_filter16(s->dest[0] + 8, s->linesize, pq);
190 /** Put block onto picture
192 static void vc1_put_block(VC1Context *v, DCTELEM block[6][64])
196 DSPContext *dsp = &v->s.dsp;
200 for(k = 0; k < 6; k++)
201 for(j = 0; j < 8; j++)
202 for(i = 0; i < 8; i++)
203 block[k][i + j*8] = (block[k][i + j*8] - 64) << 1;
206 ys = v->s.current_picture.linesize[0];
207 us = v->s.current_picture.linesize[1];
208 vs = v->s.current_picture.linesize[2];
211 dsp->put_pixels_clamped(block[0], Y, ys);
212 dsp->put_pixels_clamped(block[1], Y + 8, ys);
214 dsp->put_pixels_clamped(block[2], Y, ys);
215 dsp->put_pixels_clamped(block[3], Y + 8, ys);
217 if(!(v->s.flags & CODEC_FLAG_GRAY)) {
218 dsp->put_pixels_clamped(block[4], v->s.dest[1], us);
219 dsp->put_pixels_clamped(block[5], v->s.dest[2], vs);
223 /** Do motion compensation over 1 macroblock
224 * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
226 static void vc1_mc_1mv(VC1Context *v, int dir)
228 MpegEncContext *s = &v->s;
229 DSPContext *dsp = &v->s.dsp;
230 uint8_t *srcY, *srcU, *srcV;
231 int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
233 if(!v->s.last_picture.data[0])return;
235 mx = s->mv[dir][0][0];
236 my = s->mv[dir][0][1];
238 // store motion vectors for further use in B frames
239 if(s->pict_type == FF_P_TYPE) {
240 s->current_picture.motion_val[1][s->block_index[0]][0] = mx;
241 s->current_picture.motion_val[1][s->block_index[0]][1] = my;
243 uvmx = (mx + ((mx & 3) == 3)) >> 1;
244 uvmy = (my + ((my & 3) == 3)) >> 1;
246 uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
247 uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
250 srcY = s->last_picture.data[0];
251 srcU = s->last_picture.data[1];
252 srcV = s->last_picture.data[2];
254 srcY = s->next_picture.data[0];
255 srcU = s->next_picture.data[1];
256 srcV = s->next_picture.data[2];
259 src_x = s->mb_x * 16 + (mx >> 2);
260 src_y = s->mb_y * 16 + (my >> 2);
261 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
262 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
264 if(v->profile != PROFILE_ADVANCED){
265 src_x = av_clip( src_x, -16, s->mb_width * 16);
266 src_y = av_clip( src_y, -16, s->mb_height * 16);
267 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
268 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
270 src_x = av_clip( src_x, -17, s->avctx->coded_width);
271 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
272 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
273 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
276 srcY += src_y * s->linesize + src_x;
277 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
278 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
280 /* for grayscale we should not try to read from unknown area */
281 if(s->flags & CODEC_FLAG_GRAY) {
282 srcU = s->edge_emu_buffer + 18 * s->linesize;
283 srcV = s->edge_emu_buffer + 18 * s->linesize;
286 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
287 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
288 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
289 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
291 srcY -= s->mspel * (1 + s->linesize);
292 s->dsp.emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
293 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
294 srcY = s->edge_emu_buffer;
295 s->dsp.emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
296 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
297 s->dsp.emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
298 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
301 /* if we deal with range reduction we need to scale source blocks */
307 for(j = 0; j < 17 + s->mspel*2; j++) {
308 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
311 src = srcU; src2 = srcV;
312 for(j = 0; j < 9; j++) {
313 for(i = 0; i < 9; i++) {
314 src[i] = ((src[i] - 128) >> 1) + 128;
315 src2[i] = ((src2[i] - 128) >> 1) + 128;
317 src += s->uvlinesize;
318 src2 += s->uvlinesize;
321 /* if we deal with intensity compensation we need to scale source blocks */
322 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
327 for(j = 0; j < 17 + s->mspel*2; j++) {
328 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = v->luty[src[i]];
331 src = srcU; src2 = srcV;
332 for(j = 0; j < 9; j++) {
333 for(i = 0; i < 9; i++) {
334 src[i] = v->lutuv[src[i]];
335 src2[i] = v->lutuv[src2[i]];
337 src += s->uvlinesize;
338 src2 += s->uvlinesize;
341 srcY += s->mspel * (1 + s->linesize);
345 dxy = ((my & 3) << 2) | (mx & 3);
346 v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
347 v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
348 srcY += s->linesize * 8;
349 v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd);
350 v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
351 } else { // hpel mc - always used for luma
352 dxy = (my & 2) | ((mx & 2) >> 1);
355 dsp->put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
357 dsp->put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
360 if(s->flags & CODEC_FLAG_GRAY) return;
361 /* Chroma MC always uses qpel bilinear */
365 dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
366 dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
368 v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
369 v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
373 /** Do motion compensation for 4-MV macroblock - luminance block
375 static void vc1_mc_4mv_luma(VC1Context *v, int n)
377 MpegEncContext *s = &v->s;
378 DSPContext *dsp = &v->s.dsp;
380 int dxy, mx, my, src_x, src_y;
383 if(!v->s.last_picture.data[0])return;
386 srcY = s->last_picture.data[0];
388 off = s->linesize * 4 * (n&2) + (n&1) * 8;
390 src_x = s->mb_x * 16 + (n&1) * 8 + (mx >> 2);
391 src_y = s->mb_y * 16 + (n&2) * 4 + (my >> 2);
393 if(v->profile != PROFILE_ADVANCED){
394 src_x = av_clip( src_x, -16, s->mb_width * 16);
395 src_y = av_clip( src_y, -16, s->mb_height * 16);
397 src_x = av_clip( src_x, -17, s->avctx->coded_width);
398 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
401 srcY += src_y * s->linesize + src_x;
403 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
404 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 8 - s->mspel*2
405 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 8 - s->mspel*2){
406 srcY -= s->mspel * (1 + s->linesize);
407 s->dsp.emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 9+s->mspel*2, 9+s->mspel*2,
408 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
409 srcY = s->edge_emu_buffer;
410 /* if we deal with range reduction we need to scale source blocks */
416 for(j = 0; j < 9 + s->mspel*2; j++) {
417 for(i = 0; i < 9 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
421 /* if we deal with intensity compensation we need to scale source blocks */
422 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
427 for(j = 0; j < 9 + s->mspel*2; j++) {
428 for(i = 0; i < 9 + s->mspel*2; i++) src[i] = v->luty[src[i]];
432 srcY += s->mspel * (1 + s->linesize);
436 dxy = ((my & 3) << 2) | (mx & 3);
437 v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, v->rnd);
438 } else { // hpel mc - always used for luma
439 dxy = (my & 2) | ((mx & 2) >> 1);
441 dsp->put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
443 dsp->put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
447 static inline int median4(int a, int b, int c, int d)
450 if(c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2;
451 else return (FFMIN(b, c) + FFMAX(a, d)) / 2;
453 if(c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2;
454 else return (FFMIN(a, c) + FFMAX(b, d)) / 2;
459 /** Do motion compensation for 4-MV macroblock - both chroma blocks
461 static void vc1_mc_4mv_chroma(VC1Context *v)
463 MpegEncContext *s = &v->s;
464 DSPContext *dsp = &v->s.dsp;
465 uint8_t *srcU, *srcV;
466 int uvmx, uvmy, uvsrc_x, uvsrc_y;
467 int i, idx, tx = 0, ty = 0;
468 int mvx[4], mvy[4], intra[4];
469 static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
471 if(!v->s.last_picture.data[0])return;
472 if(s->flags & CODEC_FLAG_GRAY) return;
474 for(i = 0; i < 4; i++) {
475 mvx[i] = s->mv[0][i][0];
476 mvy[i] = s->mv[0][i][1];
477 intra[i] = v->mb_type[0][s->block_index[i]];
480 /* calculate chroma MV vector from four luma MVs */
481 idx = (intra[3] << 3) | (intra[2] << 2) | (intra[1] << 1) | intra[0];
482 if(!idx) { // all blocks are inter
483 tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]);
484 ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]);
485 } else if(count[idx] == 1) { // 3 inter blocks
488 tx = mid_pred(mvx[1], mvx[2], mvx[3]);
489 ty = mid_pred(mvy[1], mvy[2], mvy[3]);
492 tx = mid_pred(mvx[0], mvx[2], mvx[3]);
493 ty = mid_pred(mvy[0], mvy[2], mvy[3]);
496 tx = mid_pred(mvx[0], mvx[1], mvx[3]);
497 ty = mid_pred(mvy[0], mvy[1], mvy[3]);
500 tx = mid_pred(mvx[0], mvx[1], mvx[2]);
501 ty = mid_pred(mvy[0], mvy[1], mvy[2]);
504 } else if(count[idx] == 2) {
506 for(i=0; i<3;i++) if(!intra[i]) {t1 = i; break;}
507 for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;}
508 tx = (mvx[t1] + mvx[t2]) / 2;
509 ty = (mvy[t1] + mvy[t2]) / 2;
511 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
512 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
513 return; //no need to do MC for inter blocks
516 s->current_picture.motion_val[1][s->block_index[0]][0] = tx;
517 s->current_picture.motion_val[1][s->block_index[0]][1] = ty;
518 uvmx = (tx + ((tx&3) == 3)) >> 1;
519 uvmy = (ty + ((ty&3) == 3)) >> 1;
521 uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
522 uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
525 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
526 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
528 if(v->profile != PROFILE_ADVANCED){
529 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
530 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
532 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
533 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
536 srcU = s->last_picture.data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
537 srcV = s->last_picture.data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
538 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
539 || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
540 || (unsigned)uvsrc_y > (s->v_edge_pos >> 1) - 9){
541 s->dsp.emulated_edge_mc(s->edge_emu_buffer , srcU, s->uvlinesize, 8+1, 8+1,
542 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
543 s->dsp.emulated_edge_mc(s->edge_emu_buffer + 16, srcV, s->uvlinesize, 8+1, 8+1,
544 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
545 srcU = s->edge_emu_buffer;
546 srcV = s->edge_emu_buffer + 16;
548 /* if we deal with range reduction we need to scale source blocks */
553 src = srcU; src2 = srcV;
554 for(j = 0; j < 9; j++) {
555 for(i = 0; i < 9; i++) {
556 src[i] = ((src[i] - 128) >> 1) + 128;
557 src2[i] = ((src2[i] - 128) >> 1) + 128;
559 src += s->uvlinesize;
560 src2 += s->uvlinesize;
563 /* if we deal with intensity compensation we need to scale source blocks */
564 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
568 src = srcU; src2 = srcV;
569 for(j = 0; j < 9; j++) {
570 for(i = 0; i < 9; i++) {
571 src[i] = v->lutuv[src[i]];
572 src2[i] = v->lutuv[src2[i]];
574 src += s->uvlinesize;
575 src2 += s->uvlinesize;
580 /* Chroma MC always uses qpel bilinear */
584 dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
585 dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
587 v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
588 v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
592 /***********************************************************************/
594 * @defgroup vc1block VC-1 Block-level functions
595 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
601 * @brief Get macroblock-level quantizer scale
603 #define GET_MQUANT() \
607 if (v->dqprofile == DQPROFILE_ALL_MBS) \
611 mquant = (get_bits1(gb)) ? v->altpq : v->pq; \
615 mqdiff = get_bits(gb, 3); \
616 if (mqdiff != 7) mquant = v->pq + mqdiff; \
617 else mquant = get_bits(gb, 5); \
620 if(v->dqprofile == DQPROFILE_SINGLE_EDGE) \
621 edges = 1 << v->dqsbedge; \
622 else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
623 edges = (3 << v->dqsbedge) % 15; \
624 else if(v->dqprofile == DQPROFILE_FOUR_EDGES) \
626 if((edges&1) && !s->mb_x) \
628 if((edges&2) && s->first_slice_line) \
630 if((edges&4) && s->mb_x == (s->mb_width - 1)) \
632 if((edges&8) && s->mb_y == (s->mb_height - 1)) \
637 * @def GET_MVDATA(_dmv_x, _dmv_y)
638 * @brief Get MV differentials
639 * @see MVDATA decoding from 8.3.5.2, p(1)20
640 * @param _dmv_x Horizontal differential for decoded MV
641 * @param _dmv_y Vertical differential for decoded MV
643 #define GET_MVDATA(_dmv_x, _dmv_y) \
644 index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table,\
645 VC1_MV_DIFF_VLC_BITS, 2); \
651 else mb_has_coeffs = 0; \
653 if (!index) { _dmv_x = _dmv_y = 0; } \
654 else if (index == 35) \
656 _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
657 _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
659 else if (index == 36) \
668 if (!s->quarter_sample && index1 == 5) val = 1; \
670 if(size_table[index1] - val > 0) \
671 val = get_bits(gb, size_table[index1] - val); \
673 sign = 0 - (val&1); \
674 _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
677 if (!s->quarter_sample && index1 == 5) val = 1; \
679 if(size_table[index1] - val > 0) \
680 val = get_bits(gb, size_table[index1] - val); \
682 sign = 0 - (val&1); \
683 _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
686 /** Predict and set motion vector
688 static inline void vc1_pred_mv(MpegEncContext *s, int n, int dmv_x, int dmv_y, int mv1, int r_x, int r_y, uint8_t* is_intra)
690 int xy, wrap, off = 0;
695 /* scale MV difference to be quad-pel */
696 dmv_x <<= 1 - s->quarter_sample;
697 dmv_y <<= 1 - s->quarter_sample;
700 xy = s->block_index[n];
703 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
704 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
705 s->current_picture.motion_val[1][xy][0] = 0;
706 s->current_picture.motion_val[1][xy][1] = 0;
707 if(mv1) { /* duplicate motion data for 1-MV block */
708 s->current_picture.motion_val[0][xy + 1][0] = 0;
709 s->current_picture.motion_val[0][xy + 1][1] = 0;
710 s->current_picture.motion_val[0][xy + wrap][0] = 0;
711 s->current_picture.motion_val[0][xy + wrap][1] = 0;
712 s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
713 s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
714 s->current_picture.motion_val[1][xy + 1][0] = 0;
715 s->current_picture.motion_val[1][xy + 1][1] = 0;
716 s->current_picture.motion_val[1][xy + wrap][0] = 0;
717 s->current_picture.motion_val[1][xy + wrap][1] = 0;
718 s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
719 s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
724 C = s->current_picture.motion_val[0][xy - 1];
725 A = s->current_picture.motion_val[0][xy - wrap];
727 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
729 //in 4-MV mode different blocks have different B predictor position
732 off = (s->mb_x > 0) ? -1 : 1;
735 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
744 B = s->current_picture.motion_val[0][xy - wrap + off];
746 if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds
747 if(s->mb_width == 1) {
751 px = mid_pred(A[0], B[0], C[0]);
752 py = mid_pred(A[1], B[1], C[1]);
754 } else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds
760 /* Pullback MV as specified in 8.3.5.3.4 */
763 qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0);
764 qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0);
765 X = (s->mb_width << 6) - 4;
766 Y = (s->mb_height << 6) - 4;
768 if(qx + px < -60) px = -60 - qx;
769 if(qy + py < -60) py = -60 - qy;
771 if(qx + px < -28) px = -28 - qx;
772 if(qy + py < -28) py = -28 - qy;
774 if(qx + px > X) px = X - qx;
775 if(qy + py > Y) py = Y - qy;
777 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
778 if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) {
779 if(is_intra[xy - wrap])
780 sum = FFABS(px) + FFABS(py);
782 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
784 if(get_bits1(&s->gb)) {
793 sum = FFABS(px) + FFABS(py);
795 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
797 if(get_bits1(&s->gb)) {
807 /* store MV using signed modulus of MV range defined in 4.11 */
808 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
809 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
810 if(mv1) { /* duplicate motion data for 1-MV block */
811 s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0];
812 s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1];
813 s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0];
814 s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1];
815 s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0];
816 s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1];
820 /** Motion compensation for direct or interpolated blocks in B-frames
822 static void vc1_interp_mc(VC1Context *v)
824 MpegEncContext *s = &v->s;
825 DSPContext *dsp = &v->s.dsp;
826 uint8_t *srcY, *srcU, *srcV;
827 int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
829 if(!v->s.next_picture.data[0])return;
833 uvmx = (mx + ((mx & 3) == 3)) >> 1;
834 uvmy = (my + ((my & 3) == 3)) >> 1;
836 uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
837 uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
839 srcY = s->next_picture.data[0];
840 srcU = s->next_picture.data[1];
841 srcV = s->next_picture.data[2];
843 src_x = s->mb_x * 16 + (mx >> 2);
844 src_y = s->mb_y * 16 + (my >> 2);
845 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
846 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
848 if(v->profile != PROFILE_ADVANCED){
849 src_x = av_clip( src_x, -16, s->mb_width * 16);
850 src_y = av_clip( src_y, -16, s->mb_height * 16);
851 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
852 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
854 src_x = av_clip( src_x, -17, s->avctx->coded_width);
855 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
856 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
857 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
860 srcY += src_y * s->linesize + src_x;
861 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
862 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
864 /* for grayscale we should not try to read from unknown area */
865 if(s->flags & CODEC_FLAG_GRAY) {
866 srcU = s->edge_emu_buffer + 18 * s->linesize;
867 srcV = s->edge_emu_buffer + 18 * s->linesize;
871 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
872 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
873 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
875 srcY -= s->mspel * (1 + s->linesize);
876 s->dsp.emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
877 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
878 srcY = s->edge_emu_buffer;
879 s->dsp.emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
880 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
881 s->dsp.emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
882 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
885 /* if we deal with range reduction we need to scale source blocks */
891 for(j = 0; j < 17 + s->mspel*2; j++) {
892 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
895 src = srcU; src2 = srcV;
896 for(j = 0; j < 9; j++) {
897 for(i = 0; i < 9; i++) {
898 src[i] = ((src[i] - 128) >> 1) + 128;
899 src2[i] = ((src2[i] - 128) >> 1) + 128;
901 src += s->uvlinesize;
902 src2 += s->uvlinesize;
905 srcY += s->mspel * (1 + s->linesize);
909 dxy = ((my & 3) << 2) | (mx & 3);
910 v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
911 v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
912 srcY += s->linesize * 8;
913 v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd);
914 v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
916 dxy = (my & 2) | ((mx & 2) >> 1);
919 dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
921 dsp->avg_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
924 if(s->flags & CODEC_FLAG_GRAY) return;
925 /* Chroma MC always uses qpel blilinear */
929 dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
930 dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
932 v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
933 v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
937 static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
941 #if B_FRACTION_DEN==256
945 return 2 * ((value * n + 255) >> 9);
946 return (value * n + 128) >> 8;
951 return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
952 return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
956 /** Reconstruct motion vector for B-frame and do motion compensation
958 static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
961 v->mv_mode2 = v->mv_mode;
962 v->mv_mode = MV_PMODE_INTENSITY_COMP;
967 if(v->use_ic) v->mv_mode = v->mv_mode2;
970 if(mode == BMV_TYPE_INTERPOLATED) {
973 if(v->use_ic) v->mv_mode = v->mv_mode2;
977 if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2;
978 vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
979 if(v->use_ic) v->mv_mode = v->mv_mode2;
982 static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype)
984 MpegEncContext *s = &v->s;
985 int xy, wrap, off = 0;
990 const uint8_t *is_intra = v->mb_type[0];
994 /* scale MV difference to be quad-pel */
995 dmv_x[0] <<= 1 - s->quarter_sample;
996 dmv_y[0] <<= 1 - s->quarter_sample;
997 dmv_x[1] <<= 1 - s->quarter_sample;
998 dmv_y[1] <<= 1 - s->quarter_sample;
1000 wrap = s->b8_stride;
1001 xy = s->block_index[0];
1004 s->current_picture.motion_val[0][xy][0] =
1005 s->current_picture.motion_val[0][xy][1] =
1006 s->current_picture.motion_val[1][xy][0] =
1007 s->current_picture.motion_val[1][xy][1] = 0;
1010 s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
1011 s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
1012 s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
1013 s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
1015 /* Pullback predicted motion vectors as specified in 8.4.5.4 */
1016 s->mv[0][0][0] = av_clip(s->mv[0][0][0], -60 - (s->mb_x << 6), (s->mb_width << 6) - 4 - (s->mb_x << 6));
1017 s->mv[0][0][1] = av_clip(s->mv[0][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6));
1018 s->mv[1][0][0] = av_clip(s->mv[1][0][0], -60 - (s->mb_x << 6), (s->mb_width << 6) - 4 - (s->mb_x << 6));
1019 s->mv[1][0][1] = av_clip(s->mv[1][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6));
1021 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
1022 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
1023 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
1024 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
1028 if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
1029 C = s->current_picture.motion_val[0][xy - 2];
1030 A = s->current_picture.motion_val[0][xy - wrap*2];
1031 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
1032 B = s->current_picture.motion_val[0][xy - wrap*2 + off];
1034 if(!s->mb_x) C[0] = C[1] = 0;
1035 if(!s->first_slice_line) { // predictor A is not out of bounds
1036 if(s->mb_width == 1) {
1040 px = mid_pred(A[0], B[0], C[0]);
1041 py = mid_pred(A[1], B[1], C[1]);
1043 } else if(s->mb_x) { // predictor C is not out of bounds
1049 /* Pullback MV as specified in 8.3.5.3.4 */
1052 if(v->profile < PROFILE_ADVANCED) {
1053 qx = (s->mb_x << 5);
1054 qy = (s->mb_y << 5);
1055 X = (s->mb_width << 5) - 4;
1056 Y = (s->mb_height << 5) - 4;
1057 if(qx + px < -28) px = -28 - qx;
1058 if(qy + py < -28) py = -28 - qy;
1059 if(qx + px > X) px = X - qx;
1060 if(qy + py > Y) py = Y - qy;
1062 qx = (s->mb_x << 6);
1063 qy = (s->mb_y << 6);
1064 X = (s->mb_width << 6) - 4;
1065 Y = (s->mb_height << 6) - 4;
1066 if(qx + px < -60) px = -60 - qx;
1067 if(qy + py < -60) py = -60 - qy;
1068 if(qx + px > X) px = X - qx;
1069 if(qy + py > Y) py = Y - qy;
1072 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1073 if(0 && !s->first_slice_line && s->mb_x) {
1074 if(is_intra[xy - wrap])
1075 sum = FFABS(px) + FFABS(py);
1077 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1079 if(get_bits1(&s->gb)) {
1087 if(is_intra[xy - 2])
1088 sum = FFABS(px) + FFABS(py);
1090 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1092 if(get_bits1(&s->gb)) {
1102 /* store MV using signed modulus of MV range defined in 4.11 */
1103 s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
1104 s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
1106 if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
1107 C = s->current_picture.motion_val[1][xy - 2];
1108 A = s->current_picture.motion_val[1][xy - wrap*2];
1109 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
1110 B = s->current_picture.motion_val[1][xy - wrap*2 + off];
1112 if(!s->mb_x) C[0] = C[1] = 0;
1113 if(!s->first_slice_line) { // predictor A is not out of bounds
1114 if(s->mb_width == 1) {
1118 px = mid_pred(A[0], B[0], C[0]);
1119 py = mid_pred(A[1], B[1], C[1]);
1121 } else if(s->mb_x) { // predictor C is not out of bounds
1127 /* Pullback MV as specified in 8.3.5.3.4 */
1130 if(v->profile < PROFILE_ADVANCED) {
1131 qx = (s->mb_x << 5);
1132 qy = (s->mb_y << 5);
1133 X = (s->mb_width << 5) - 4;
1134 Y = (s->mb_height << 5) - 4;
1135 if(qx + px < -28) px = -28 - qx;
1136 if(qy + py < -28) py = -28 - qy;
1137 if(qx + px > X) px = X - qx;
1138 if(qy + py > Y) py = Y - qy;
1140 qx = (s->mb_x << 6);
1141 qy = (s->mb_y << 6);
1142 X = (s->mb_width << 6) - 4;
1143 Y = (s->mb_height << 6) - 4;
1144 if(qx + px < -60) px = -60 - qx;
1145 if(qy + py < -60) py = -60 - qy;
1146 if(qx + px > X) px = X - qx;
1147 if(qy + py > Y) py = Y - qy;
1150 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1151 if(0 && !s->first_slice_line && s->mb_x) {
1152 if(is_intra[xy - wrap])
1153 sum = FFABS(px) + FFABS(py);
1155 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1157 if(get_bits1(&s->gb)) {
1165 if(is_intra[xy - 2])
1166 sum = FFABS(px) + FFABS(py);
1168 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1170 if(get_bits1(&s->gb)) {
1180 /* store MV using signed modulus of MV range defined in 4.11 */
1182 s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
1183 s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
1185 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
1186 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
1187 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
1188 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
1191 /** Get predicted DC value for I-frames only
1192 * prediction dir: left=0, top=1
1193 * @param s MpegEncContext
1194 * @param overlap flag indicating that overlap filtering is used
1195 * @param pq integer part of picture quantizer
1196 * @param[in] n block index in the current MB
1197 * @param dc_val_ptr Pointer to DC predictor
1198 * @param dir_ptr Prediction direction for use in AC prediction
1200 static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
1201 int16_t **dc_val_ptr, int *dir_ptr)
1203 int a, b, c, wrap, pred, scale;
1205 static const uint16_t dcpred[32] = {
1206 -1, 1024, 512, 341, 256, 205, 171, 146, 128,
1207 114, 102, 93, 85, 79, 73, 68, 64,
1208 60, 57, 54, 51, 49, 47, 45, 43,
1209 41, 39, 38, 37, 35, 34, 33
1212 /* find prediction - wmv3_dc_scale always used here in fact */
1213 if (n < 4) scale = s->y_dc_scale;
1214 else scale = s->c_dc_scale;
1216 wrap = s->block_wrap[n];
1217 dc_val= s->dc_val[0] + s->block_index[n];
1223 b = dc_val[ - 1 - wrap];
1224 a = dc_val[ - wrap];
1226 if (pq < 9 || !overlap)
1228 /* Set outer values */
1229 if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
1230 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
1234 /* Set outer values */
1235 if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
1236 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
1239 if (abs(a - b) <= abs(b - c)) {
1247 /* update predictor */
1248 *dc_val_ptr = &dc_val[0];
1253 /** Get predicted DC value
1254 * prediction dir: left=0, top=1
1255 * @param s MpegEncContext
1256 * @param overlap flag indicating that overlap filtering is used
1257 * @param pq integer part of picture quantizer
1258 * @param[in] n block index in the current MB
1259 * @param a_avail flag indicating top block availability
1260 * @param c_avail flag indicating left block availability
1261 * @param dc_val_ptr Pointer to DC predictor
1262 * @param dir_ptr Prediction direction for use in AC prediction
1264 static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
1265 int a_avail, int c_avail,
1266 int16_t **dc_val_ptr, int *dir_ptr)
1268 int a, b, c, wrap, pred;
1270 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1273 wrap = s->block_wrap[n];
1274 dc_val= s->dc_val[0] + s->block_index[n];
1280 b = dc_val[ - 1 - wrap];
1281 a = dc_val[ - wrap];
1282 /* scale predictors if needed */
1283 q1 = s->current_picture.qscale_table[mb_pos];
1284 if(c_avail && (n!= 1 && n!=3)) {
1285 q2 = s->current_picture.qscale_table[mb_pos - 1];
1287 c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
1289 if(a_avail && (n!= 2 && n!=3)) {
1290 q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
1292 a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
1294 if(a_avail && c_avail && (n!=3)) {
1297 if(n != 2) off -= s->mb_stride;
1298 q2 = s->current_picture.qscale_table[off];
1300 b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
1303 if(a_avail && c_avail) {
1304 if(abs(a - b) <= abs(b - c)) {
1311 } else if(a_avail) {
1314 } else if(c_avail) {
1322 /* update predictor */
1323 *dc_val_ptr = &dc_val[0];
1327 /** @} */ // Block group
1330 * @defgroup vc1_std_mb VC1 Macroblock-level functions in Simple/Main Profiles
1331 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
1335 static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
1337 int xy, wrap, pred, a, b, c;
1339 xy = s->block_index[n];
1340 wrap = s->b8_stride;
1345 a = s->coded_block[xy - 1 ];
1346 b = s->coded_block[xy - 1 - wrap];
1347 c = s->coded_block[xy - wrap];
1356 *coded_block_ptr = &s->coded_block[xy];
1362 * Decode one AC coefficient
1363 * @param v The VC1 context
1364 * @param last Last coefficient
1365 * @param skip How much zero coefficients to skip
1366 * @param value Decoded AC coefficient value
1367 * @param codingset set of VLC to decode data
1370 static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset)
1372 GetBitContext *gb = &v->s.gb;
1373 int index, escape, run = 0, level = 0, lst = 0;
1375 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
1376 if (index != vc1_ac_sizes[codingset] - 1) {
1377 run = vc1_index_decode_table[codingset][index][0];
1378 level = vc1_index_decode_table[codingset][index][1];
1379 lst = index >= vc1_last_decode_table[codingset];
1383 escape = decode210(gb);
1385 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
1386 run = vc1_index_decode_table[codingset][index][0];
1387 level = vc1_index_decode_table[codingset][index][1];
1388 lst = index >= vc1_last_decode_table[codingset];
1391 level += vc1_last_delta_level_table[codingset][run];
1393 level += vc1_delta_level_table[codingset][run];
1396 run += vc1_last_delta_run_table[codingset][level] + 1;
1398 run += vc1_delta_run_table[codingset][level] + 1;
1404 lst = get_bits1(gb);
1405 if(v->s.esc3_level_length == 0) {
1406 if(v->pq < 8 || v->dquantfrm) { // table 59
1407 v->s.esc3_level_length = get_bits(gb, 3);
1408 if(!v->s.esc3_level_length)
1409 v->s.esc3_level_length = get_bits(gb, 2) + 8;
1411 v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
1413 v->s.esc3_run_length = 3 + get_bits(gb, 2);
1415 run = get_bits(gb, v->s.esc3_run_length);
1416 sign = get_bits1(gb);
1417 level = get_bits(gb, v->s.esc3_level_length);
1428 /** Decode intra block in intra frames - should be faster than decode_intra_block
1429 * @param v VC1Context
1430 * @param block block to decode
1431 * @param[in] n subblock index
1432 * @param coded are AC coeffs present or not
1433 * @param codingset set of VLC to decode data
1435 static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset)
1437 GetBitContext *gb = &v->s.gb;
1438 MpegEncContext *s = &v->s;
1439 int dc_pred_dir = 0; /* Direction of the DC prediction used */
1442 int16_t *ac_val, *ac_val2;
1445 /* Get DC differential */
1447 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
1449 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
1452 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
1457 if (dcdiff == 119 /* ESC index value */)
1459 /* TODO: Optimize */
1460 if (v->pq == 1) dcdiff = get_bits(gb, 10);
1461 else if (v->pq == 2) dcdiff = get_bits(gb, 9);
1462 else dcdiff = get_bits(gb, 8);
1467 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
1468 else if (v->pq == 2)
1469 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
1476 dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
1479 /* Store the quantized DC coeff, used for prediction */
1481 block[0] = dcdiff * s->y_dc_scale;
1483 block[0] = dcdiff * s->c_dc_scale;
1494 int last = 0, skip, value;
1495 const uint8_t *zz_table;
1499 scale = v->pq * 2 + v->halfpq;
1503 zz_table = v->zz_8x8[2];
1505 zz_table = v->zz_8x8[3];
1507 zz_table = v->zz_8x8[1];
1509 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
1511 if(dc_pred_dir) //left
1514 ac_val -= 16 * s->block_wrap[n];
1517 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
1521 block[zz_table[i++]] = value;
1524 /* apply AC prediction if needed */
1526 if(dc_pred_dir) { //left
1527 for(k = 1; k < 8; k++)
1528 block[k] += ac_val[k];
1530 for(k = 1; k < 8; k++)
1531 block[k << 3] += ac_val[k + 8];
1534 /* save AC coeffs for further prediction */
1535 for(k = 1; k < 8; k++) {
1536 ac_val2[k] = block[k];
1537 ac_val2[k + 8] = block[k << 3];
1540 /* scale AC coeffs */
1541 for(k = 1; k < 64; k++)
1545 block[k] += (block[k] < 0) ? -v->pq : v->pq;
1548 if(s->ac_pred) i = 63;
1554 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
1558 scale = v->pq * 2 + v->halfpq;
1559 memset(ac_val2, 0, 16 * 2);
1560 if(dc_pred_dir) {//left
1563 memcpy(ac_val2, ac_val, 8 * 2);
1565 ac_val -= 16 * s->block_wrap[n];
1567 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
1570 /* apply AC prediction if needed */
1572 if(dc_pred_dir) { //left
1573 for(k = 1; k < 8; k++) {
1574 block[k] = ac_val[k] * scale;
1575 if(!v->pquantizer && block[k])
1576 block[k] += (block[k] < 0) ? -v->pq : v->pq;
1579 for(k = 1; k < 8; k++) {
1580 block[k << 3] = ac_val[k + 8] * scale;
1581 if(!v->pquantizer && block[k << 3])
1582 block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq;
1588 s->block_last_index[n] = i;
1593 /** Decode intra block in intra frames - should be faster than decode_intra_block
1594 * @param v VC1Context
1595 * @param block block to decode
1596 * @param[in] n subblock number
1597 * @param coded are AC coeffs present or not
1598 * @param codingset set of VLC to decode data
1599 * @param mquant quantizer value for this macroblock
1601 static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant)
1603 GetBitContext *gb = &v->s.gb;
1604 MpegEncContext *s = &v->s;
1605 int dc_pred_dir = 0; /* Direction of the DC prediction used */
1608 int16_t *ac_val, *ac_val2;
1610 int a_avail = v->a_avail, c_avail = v->c_avail;
1611 int use_pred = s->ac_pred;
1614 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1616 /* Get DC differential */
1618 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
1620 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
1623 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
1628 if (dcdiff == 119 /* ESC index value */)
1630 /* TODO: Optimize */
1631 if (mquant == 1) dcdiff = get_bits(gb, 10);
1632 else if (mquant == 2) dcdiff = get_bits(gb, 9);
1633 else dcdiff = get_bits(gb, 8);
1638 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
1639 else if (mquant == 2)
1640 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
1647 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
1650 /* Store the quantized DC coeff, used for prediction */
1652 block[0] = dcdiff * s->y_dc_scale;
1654 block[0] = dcdiff * s->c_dc_scale;
1660 /* check if AC is needed at all */
1661 if(!a_avail && !c_avail) use_pred = 0;
1662 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
1665 scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0);
1667 if(dc_pred_dir) //left
1670 ac_val -= 16 * s->block_wrap[n];
1672 q1 = s->current_picture.qscale_table[mb_pos];
1673 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
1674 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
1675 if(dc_pred_dir && n==1) q2 = q1;
1676 if(!dc_pred_dir && n==2) q2 = q1;
1680 int last = 0, skip, value;
1681 const uint8_t *zz_table;
1686 zz_table = v->zz_8x8[2];
1688 zz_table = v->zz_8x8[3];
1690 zz_table = v->zz_8x8[1];
1693 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
1697 block[zz_table[i++]] = value;
1700 /* apply AC prediction if needed */
1702 /* scale predictors if needed*/
1704 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
1705 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
1707 if(dc_pred_dir) { //left
1708 for(k = 1; k < 8; k++)
1709 block[k] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1711 for(k = 1; k < 8; k++)
1712 block[k << 3] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1715 if(dc_pred_dir) { //left
1716 for(k = 1; k < 8; k++)
1717 block[k] += ac_val[k];
1719 for(k = 1; k < 8; k++)
1720 block[k << 3] += ac_val[k + 8];
1724 /* save AC coeffs for further prediction */
1725 for(k = 1; k < 8; k++) {
1726 ac_val2[k] = block[k];
1727 ac_val2[k + 8] = block[k << 3];
1730 /* scale AC coeffs */
1731 for(k = 1; k < 64; k++)
1735 block[k] += (block[k] < 0) ? -mquant : mquant;
1738 if(use_pred) i = 63;
1739 } else { // no AC coeffs
1742 memset(ac_val2, 0, 16 * 2);
1743 if(dc_pred_dir) {//left
1745 memcpy(ac_val2, ac_val, 8 * 2);
1747 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
1748 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
1749 for(k = 1; k < 8; k++)
1750 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1755 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
1757 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
1758 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
1759 for(k = 1; k < 8; k++)
1760 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1765 /* apply AC prediction if needed */
1767 if(dc_pred_dir) { //left
1768 for(k = 1; k < 8; k++) {
1769 block[k] = ac_val2[k] * scale;
1770 if(!v->pquantizer && block[k])
1771 block[k] += (block[k] < 0) ? -mquant : mquant;
1774 for(k = 1; k < 8; k++) {
1775 block[k << 3] = ac_val2[k + 8] * scale;
1776 if(!v->pquantizer && block[k << 3])
1777 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
1783 s->block_last_index[n] = i;
1788 /** Decode intra block in inter frames - more generic version than vc1_decode_i_block
1789 * @param v VC1Context
1790 * @param block block to decode
1791 * @param[in] n subblock index
1792 * @param coded are AC coeffs present or not
1793 * @param mquant block quantizer
1794 * @param codingset set of VLC to decode data
1796 static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset)
1798 GetBitContext *gb = &v->s.gb;
1799 MpegEncContext *s = &v->s;
1800 int dc_pred_dir = 0; /* Direction of the DC prediction used */
1803 int16_t *ac_val, *ac_val2;
1805 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1806 int a_avail = v->a_avail, c_avail = v->c_avail;
1807 int use_pred = s->ac_pred;
1811 s->dsp.clear_block(block);
1813 /* XXX: Guard against dumb values of mquant */
1814 mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
1816 /* Set DC scale - y and c use the same */
1817 s->y_dc_scale = s->y_dc_scale_table[mquant];
1818 s->c_dc_scale = s->c_dc_scale_table[mquant];
1820 /* Get DC differential */
1822 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
1824 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
1827 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
1832 if (dcdiff == 119 /* ESC index value */)
1834 /* TODO: Optimize */
1835 if (mquant == 1) dcdiff = get_bits(gb, 10);
1836 else if (mquant == 2) dcdiff = get_bits(gb, 9);
1837 else dcdiff = get_bits(gb, 8);
1842 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
1843 else if (mquant == 2)
1844 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
1851 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
1854 /* Store the quantized DC coeff, used for prediction */
1857 block[0] = dcdiff * s->y_dc_scale;
1859 block[0] = dcdiff * s->c_dc_scale;
1865 /* check if AC is needed at all and adjust direction if needed */
1866 if(!a_avail) dc_pred_dir = 1;
1867 if(!c_avail) dc_pred_dir = 0;
1868 if(!a_avail && !c_avail) use_pred = 0;
1869 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
1872 scale = mquant * 2 + v->halfpq;
1874 if(dc_pred_dir) //left
1877 ac_val -= 16 * s->block_wrap[n];
1879 q1 = s->current_picture.qscale_table[mb_pos];
1880 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
1881 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
1882 if(dc_pred_dir && n==1) q2 = q1;
1883 if(!dc_pred_dir && n==2) q2 = q1;
1887 int last = 0, skip, value;
1891 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
1895 block[v->zz_8x8[0][i++]] = value;
1898 /* apply AC prediction if needed */
1900 /* scale predictors if needed*/
1902 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
1903 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
1905 if(dc_pred_dir) { //left
1906 for(k = 1; k < 8; k++)
1907 block[k] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1909 for(k = 1; k < 8; k++)
1910 block[k << 3] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1913 if(dc_pred_dir) { //left
1914 for(k = 1; k < 8; k++)
1915 block[k] += ac_val[k];
1917 for(k = 1; k < 8; k++)
1918 block[k << 3] += ac_val[k + 8];
1922 /* save AC coeffs for further prediction */
1923 for(k = 1; k < 8; k++) {
1924 ac_val2[k] = block[k];
1925 ac_val2[k + 8] = block[k << 3];
1928 /* scale AC coeffs */
1929 for(k = 1; k < 64; k++)
1933 block[k] += (block[k] < 0) ? -mquant : mquant;
1936 if(use_pred) i = 63;
1937 } else { // no AC coeffs
1940 memset(ac_val2, 0, 16 * 2);
1941 if(dc_pred_dir) {//left
1943 memcpy(ac_val2, ac_val, 8 * 2);
1945 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
1946 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
1947 for(k = 1; k < 8; k++)
1948 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1953 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
1955 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
1956 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
1957 for(k = 1; k < 8; k++)
1958 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1963 /* apply AC prediction if needed */
1965 if(dc_pred_dir) { //left
1966 for(k = 1; k < 8; k++) {
1967 block[k] = ac_val2[k] * scale;
1968 if(!v->pquantizer && block[k])
1969 block[k] += (block[k] < 0) ? -mquant : mquant;
1972 for(k = 1; k < 8; k++) {
1973 block[k << 3] = ac_val2[k + 8] * scale;
1974 if(!v->pquantizer && block[k << 3])
1975 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
1981 s->block_last_index[n] = i;
1988 static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block,
1989 uint8_t *dst, int linesize, int skip_block, int apply_filter, int cbp_top, int cbp_left)
1991 MpegEncContext *s = &v->s;
1992 GetBitContext *gb = &s->gb;
1995 int scale, off, idx, last, skip, value;
1996 int ttblk = ttmb & 7;
1999 s->dsp.clear_block(block);
2002 ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)];
2004 if(ttblk == TT_4X4) {
2005 subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
2007 if((ttblk != TT_8X8 && ttblk != TT_4X4)
2008 && ((v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))
2009 || (!v->res_rtm_flag && !first_block))) {
2010 subblkpat = decode012(gb);
2011 if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits
2012 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4;
2013 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8;
2015 scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0);
2017 // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
2018 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
2019 subblkpat = 2 - (ttblk == TT_8X4_TOP);
2022 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
2023 subblkpat = 2 - (ttblk == TT_4X8_LEFT);
2032 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2036 idx = v->zz_8x8[0][i++];
2037 block[idx] = value * scale;
2039 block[idx] += (block[idx] < 0) ? -mquant : mquant;
2043 v->vc1dsp.vc1_inv_trans_8x8_dc(dst, linesize, block);
2045 v->vc1dsp.vc1_inv_trans_8x8(block);
2046 s->dsp.add_pixels_clamped(block, dst, linesize);
2048 if(apply_filter && cbp_top & 0xC)
2049 v->vc1dsp.vc1_v_loop_filter8(dst, linesize, v->pq);
2050 if(apply_filter && cbp_left & 0xA)
2051 v->vc1dsp.vc1_h_loop_filter8(dst, linesize, v->pq);
2055 pat = ~subblkpat & 0xF;
2056 for(j = 0; j < 4; j++) {
2057 last = subblkpat & (1 << (3 - j));
2059 off = (j & 1) * 4 + (j & 2) * 16;
2061 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2065 idx = ff_vc1_simple_progressive_4x4_zz[i++];
2066 block[idx + off] = value * scale;
2068 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2070 if(!(subblkpat & (1 << (3 - j))) && !skip_block){
2072 v->vc1dsp.vc1_inv_trans_4x4_dc(dst + (j&1)*4 + (j&2)*2*linesize, linesize, block + off);
2074 v->vc1dsp.vc1_inv_trans_4x4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, block + off);
2075 if(apply_filter && (j&2 ? pat & (1<<(j-2)) : (cbp_top & (1 << (j + 2)))))
2076 v->vc1dsp.vc1_v_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq);
2077 if(apply_filter && (j&1 ? pat & (1<<(j-1)) : (cbp_left & (1 << (j + 1)))))
2078 v->vc1dsp.vc1_h_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq);
2083 pat = ~((subblkpat & 2)*6 + (subblkpat & 1)*3) & 0xF;
2084 for(j = 0; j < 2; j++) {
2085 last = subblkpat & (1 << (1 - j));
2089 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2093 idx = v->zz_8x4[i++]+off;
2094 block[idx] = value * scale;
2096 block[idx] += (block[idx] < 0) ? -mquant : mquant;
2098 if(!(subblkpat & (1 << (1 - j))) && !skip_block){
2100 v->vc1dsp.vc1_inv_trans_8x4_dc(dst + j*4*linesize, linesize, block + off);
2102 v->vc1dsp.vc1_inv_trans_8x4(dst + j*4*linesize, linesize, block + off);
2103 if(apply_filter && j ? pat & 0x3 : (cbp_top & 0xC))
2104 v->vc1dsp.vc1_v_loop_filter8(dst + j*4*linesize, linesize, v->pq);
2105 if(apply_filter && cbp_left & (2 << j))
2106 v->vc1dsp.vc1_h_loop_filter4(dst + j*4*linesize, linesize, v->pq);
2111 pat = ~(subblkpat*5) & 0xF;
2112 for(j = 0; j < 2; j++) {
2113 last = subblkpat & (1 << (1 - j));
2117 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2121 idx = v->zz_4x8[i++]+off;
2122 block[idx] = value * scale;
2124 block[idx] += (block[idx] < 0) ? -mquant : mquant;
2126 if(!(subblkpat & (1 << (1 - j))) && !skip_block){
2128 v->vc1dsp.vc1_inv_trans_4x8_dc(dst + j*4, linesize, block + off);
2130 v->vc1dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
2131 if(apply_filter && cbp_top & (2 << j))
2132 v->vc1dsp.vc1_v_loop_filter4(dst + j*4, linesize, v->pq);
2133 if(apply_filter && j ? pat & 0x5 : (cbp_left & 0xA))
2134 v->vc1dsp.vc1_h_loop_filter8(dst + j*4, linesize, v->pq);
2142 /** @} */ // Macroblock group
2144 static const int size_table [6] = { 0, 2, 3, 4, 5, 8 };
2145 static const int offset_table[6] = { 0, 1, 3, 7, 15, 31 };
2147 /** Decode one P-frame MB (in Simple/Main profile)
2149 static int vc1_decode_p_mb(VC1Context *v)
2151 MpegEncContext *s = &v->s;
2152 GetBitContext *gb = &s->gb;
2154 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2155 int cbp; /* cbp decoding stuff */
2156 int mqdiff, mquant; /* MB quantization */
2157 int ttmb = v->ttfrm; /* MB Transform type */
2159 int mb_has_coeffs = 1; /* last_flag */
2160 int dmv_x, dmv_y; /* Differential MV components */
2161 int index, index1; /* LUT indexes */
2162 int val, sign; /* temp values */
2163 int first_block = 1;
2165 int skipped, fourmv;
2166 int block_cbp = 0, pat;
2167 int apply_loop_filter;
2169 mquant = v->pq; /* Loosy initialization */
2171 if (v->mv_type_is_raw)
2172 fourmv = get_bits1(gb);
2174 fourmv = v->mv_type_mb_plane[mb_pos];
2176 skipped = get_bits1(gb);
2178 skipped = v->s.mbskip_table[mb_pos];
2180 apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY);
2181 if (!fourmv) /* 1MV mode */
2185 GET_MVDATA(dmv_x, dmv_y);
2188 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
2189 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
2191 s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
2192 vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]);
2194 /* FIXME Set DC val for inter block ? */
2195 if (s->mb_intra && !mb_has_coeffs)
2198 s->ac_pred = get_bits1(gb);
2201 else if (mb_has_coeffs)
2203 if (s->mb_intra) s->ac_pred = get_bits1(gb);
2204 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
2212 s->current_picture.qscale_table[mb_pos] = mquant;
2214 if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
2215 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
2216 VC1_TTMB_VLC_BITS, 2);
2217 if(!s->mb_intra) vc1_mc_1mv(v, 0);
2221 s->dc_val[0][s->block_index[i]] = 0;
2223 val = ((cbp >> (5 - i)) & 1);
2224 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
2225 v->mb_type[0][s->block_index[i]] = s->mb_intra;
2227 /* check if prediction blocks A and C are available */
2228 v->a_avail = v->c_avail = 0;
2229 if(i == 2 || i == 3 || !s->first_slice_line)
2230 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
2231 if(i == 1 || i == 3 || s->mb_x)
2232 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
2234 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
2235 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
2236 v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
2237 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
2238 s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
2239 if(v->pq >= 9 && v->overlap) {
2241 v->vc1dsp.vc1_h_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
2243 v->vc1dsp.vc1_v_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
2245 if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
2246 int left_cbp, top_cbp;
2248 left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
2249 top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
2251 left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
2252 top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
2255 v->vc1dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2257 v->vc1dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2259 block_cbp |= 0xF << (i << 2);
2261 int left_cbp = 0, top_cbp = 0, filter = 0;
2262 if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
2265 left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
2266 top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
2268 left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
2269 top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
2272 v->vc1dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2274 v->vc1dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2276 pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp);
2277 block_cbp |= pat << (i << 2);
2278 if(!v->ttmbf && ttmb < 8) ttmb = -1;
2286 for(i = 0; i < 6; i++) {
2287 v->mb_type[0][s->block_index[i]] = 0;
2288 s->dc_val[0][s->block_index[i]] = 0;
2290 s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
2291 s->current_picture.qscale_table[mb_pos] = 0;
2292 vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
2299 if (!skipped /* unskipped MB */)
2301 int intra_count = 0, coded_inter = 0;
2302 int is_intra[6], is_coded[6];
2304 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
2307 val = ((cbp >> (5 - i)) & 1);
2308 s->dc_val[0][s->block_index[i]] = 0;
2315 GET_MVDATA(dmv_x, dmv_y);
2317 vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
2318 if(!s->mb_intra) vc1_mc_4mv_luma(v, i);
2319 intra_count += s->mb_intra;
2320 is_intra[i] = s->mb_intra;
2321 is_coded[i] = mb_has_coeffs;
2324 is_intra[i] = (intra_count >= 3);
2327 if(i == 4) vc1_mc_4mv_chroma(v);
2328 v->mb_type[0][s->block_index[i]] = is_intra[i];
2329 if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i];
2331 // if there are no coded blocks then don't do anything more
2332 if(!intra_count && !coded_inter) return 0;
2335 s->current_picture.qscale_table[mb_pos] = mquant;
2336 /* test if block is intra and has pred */
2341 if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
2342 || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
2347 if(intrapred)s->ac_pred = get_bits1(gb);
2348 else s->ac_pred = 0;
2350 if (!v->ttmbf && coded_inter)
2351 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
2355 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
2356 s->mb_intra = is_intra[i];
2358 /* check if prediction blocks A and C are available */
2359 v->a_avail = v->c_avail = 0;
2360 if(i == 2 || i == 3 || !s->first_slice_line)
2361 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
2362 if(i == 1 || i == 3 || s->mb_x)
2363 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
2365 vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset);
2366 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
2367 v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
2368 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
2369 s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
2370 if(v->pq >= 9 && v->overlap) {
2372 v->vc1dsp.vc1_h_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
2374 v->vc1dsp.vc1_v_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
2376 if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
2377 int left_cbp, top_cbp;
2379 left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
2380 top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
2382 left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
2383 top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
2386 v->vc1dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2388 v->vc1dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2390 block_cbp |= 0xF << (i << 2);
2391 } else if(is_coded[i]) {
2392 int left_cbp = 0, top_cbp = 0, filter = 0;
2393 if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
2396 left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
2397 top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
2399 left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
2400 top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
2403 v->vc1dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2405 v->vc1dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2407 pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp);
2408 block_cbp |= pat << (i << 2);
2409 if(!v->ttmbf && ttmb < 8) ttmb = -1;
2418 s->current_picture.qscale_table[mb_pos] = 0;
2419 for (i=0; i<6; i++) {
2420 v->mb_type[0][s->block_index[i]] = 0;
2421 s->dc_val[0][s->block_index[i]] = 0;
2425 vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]);
2426 vc1_mc_4mv_luma(v, i);
2428 vc1_mc_4mv_chroma(v);
2429 s->current_picture.qscale_table[mb_pos] = 0;
2433 v->cbp[s->mb_x] = block_cbp;
2435 /* Should never happen */
2439 /** Decode one B-frame MB (in Main profile)
2441 static void vc1_decode_b_mb(VC1Context *v)
2443 MpegEncContext *s = &v->s;
2444 GetBitContext *gb = &s->gb;
2446 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2447 int cbp = 0; /* cbp decoding stuff */
2448 int mqdiff, mquant; /* MB quantization */
2449 int ttmb = v->ttfrm; /* MB Transform type */
2450 int mb_has_coeffs = 0; /* last_flag */
2451 int index, index1; /* LUT indexes */
2452 int val, sign; /* temp values */
2453 int first_block = 1;
2455 int skipped, direct;
2456 int dmv_x[2], dmv_y[2];
2457 int bmvtype = BMV_TYPE_BACKWARD;
2459 mquant = v->pq; /* Loosy initialization */
2463 direct = get_bits1(gb);
2465 direct = v->direct_mb_plane[mb_pos];
2467 skipped = get_bits1(gb);
2469 skipped = v->s.mbskip_table[mb_pos];
2471 dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
2472 for(i = 0; i < 6; i++) {
2473 v->mb_type[0][s->block_index[i]] = 0;
2474 s->dc_val[0][s->block_index[i]] = 0;
2476 s->current_picture.qscale_table[mb_pos] = 0;
2480 GET_MVDATA(dmv_x[0], dmv_y[0]);
2481 dmv_x[1] = dmv_x[0];
2482 dmv_y[1] = dmv_y[0];
2484 if(skipped || !s->mb_intra) {
2485 bmvtype = decode012(gb);
2488 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
2491 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
2494 bmvtype = BMV_TYPE_INTERPOLATED;
2495 dmv_x[0] = dmv_y[0] = 0;
2499 for(i = 0; i < 6; i++)
2500 v->mb_type[0][s->block_index[i]] = s->mb_intra;
2503 if(direct) bmvtype = BMV_TYPE_INTERPOLATED;
2504 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
2505 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
2509 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
2512 s->current_picture.qscale_table[mb_pos] = mquant;
2514 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
2515 dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
2516 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
2517 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
2519 if(!mb_has_coeffs && !s->mb_intra) {
2520 /* no coded blocks - effectively skipped */
2521 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
2522 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
2525 if(s->mb_intra && !mb_has_coeffs) {
2527 s->current_picture.qscale_table[mb_pos] = mquant;
2528 s->ac_pred = get_bits1(gb);
2530 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
2532 if(bmvtype == BMV_TYPE_INTERPOLATED) {
2533 GET_MVDATA(dmv_x[0], dmv_y[0]);
2534 if(!mb_has_coeffs) {
2535 /* interpolated skipped block */
2536 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
2537 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
2541 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
2543 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
2546 s->ac_pred = get_bits1(gb);
2547 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
2549 s->current_picture.qscale_table[mb_pos] = mquant;
2550 if(!v->ttmbf && !s->mb_intra && mb_has_coeffs)
2551 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
2557 s->dc_val[0][s->block_index[i]] = 0;
2559 val = ((cbp >> (5 - i)) & 1);
2560 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
2561 v->mb_type[0][s->block_index[i]] = s->mb_intra;
2563 /* check if prediction blocks A and C are available */
2564 v->a_avail = v->c_avail = 0;
2565 if(i == 2 || i == 3 || !s->first_slice_line)
2566 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
2567 if(i == 1 || i == 3 || s->mb_x)
2568 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
2570 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
2571 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
2572 v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
2573 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
2574 s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
2576 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), 0, 0, 0);
2577 if(!v->ttmbf && ttmb < 8) ttmb = -1;
2583 /** Decode blocks of I-frame
2585 static void vc1_decode_i_blocks(VC1Context *v)
2588 MpegEncContext *s = &v->s;
2593 /* select codingmode used for VLC tables selection */
2594 switch(v->y_ac_table_index){
2596 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2599 v->codingset = CS_HIGH_MOT_INTRA;
2602 v->codingset = CS_MID_RATE_INTRA;
2606 switch(v->c_ac_table_index){
2608 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2611 v->codingset2 = CS_HIGH_MOT_INTER;
2614 v->codingset2 = CS_MID_RATE_INTER;
2618 /* Set DC scale - y and c use the same */
2619 s->y_dc_scale = s->y_dc_scale_table[v->pq];
2620 s->c_dc_scale = s->c_dc_scale_table[v->pq];
2623 s->mb_x = s->mb_y = 0;
2625 s->first_slice_line = 1;
2626 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
2628 ff_init_block_index(s);
2629 for(; s->mb_x < s->mb_width; s->mb_x++) {
2630 ff_update_block_index(s);
2631 s->dsp.clear_blocks(s->block[0]);
2632 mb_pos = s->mb_x + s->mb_y * s->mb_width;
2633 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
2634 s->current_picture.qscale_table[mb_pos] = v->pq;
2635 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
2636 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
2638 // do actual MB decoding and displaying
2639 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
2640 v->s.ac_pred = get_bits1(&v->s.gb);
2642 for(k = 0; k < 6; k++) {
2643 val = ((cbp >> (5 - k)) & 1);
2646 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
2650 cbp |= val << (5 - k);
2652 vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
2654 v->vc1dsp.vc1_inv_trans_8x8(s->block[k]);
2655 if(v->pq >= 9 && v->overlap) {
2656 for(j = 0; j < 64; j++) s->block[k][j] += 128;
2660 vc1_put_block(v, s->block);
2661 if(v->pq >= 9 && v->overlap) {
2663 v->vc1dsp.vc1_h_overlap(s->dest[0], s->linesize);
2664 v->vc1dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
2665 if(!(s->flags & CODEC_FLAG_GRAY)) {
2666 v->vc1dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
2667 v->vc1dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
2670 v->vc1dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
2671 v->vc1dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
2672 if(!s->first_slice_line) {
2673 v->vc1dsp.vc1_v_overlap(s->dest[0], s->linesize);
2674 v->vc1dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
2675 if(!(s->flags & CODEC_FLAG_GRAY)) {
2676 v->vc1dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
2677 v->vc1dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
2680 v->vc1dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
2681 v->vc1dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
2683 if(v->s.loop_filter) vc1_loop_filter_iblk(v, v->pq);
2685 if(get_bits_count(&s->gb) > v->bits) {
2686 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
2687 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
2691 if (!v->s.loop_filter)
2692 ff_draw_horiz_band(s, s->mb_y * 16, 16);
2694 ff_draw_horiz_band(s, (s->mb_y-1) * 16, 16);
2696 s->first_slice_line = 0;
2698 if (v->s.loop_filter)
2699 ff_draw_horiz_band(s, (s->mb_height-1)*16, 16);
2700 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
2703 /** Decode blocks of I-frame for advanced profile
2705 static void vc1_decode_i_blocks_adv(VC1Context *v)
2708 MpegEncContext *s = &v->s;
2715 GetBitContext *gb = &s->gb;
2717 /* select codingmode used for VLC tables selection */
2718 switch(v->y_ac_table_index){
2720 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2723 v->codingset = CS_HIGH_MOT_INTRA;
2726 v->codingset = CS_MID_RATE_INTRA;
2730 switch(v->c_ac_table_index){
2732 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2735 v->codingset2 = CS_HIGH_MOT_INTER;
2738 v->codingset2 = CS_MID_RATE_INTER;
2743 s->mb_x = s->mb_y = 0;
2745 s->first_slice_line = 1;
2746 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
2748 ff_init_block_index(s);
2749 for(;s->mb_x < s->mb_width; s->mb_x++) {
2750 ff_update_block_index(s);
2751 s->dsp.clear_blocks(s->block[0]);
2752 mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2753 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
2754 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
2755 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
2757 // do actual MB decoding and displaying
2758 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
2759 if(v->acpred_is_raw)
2760 v->s.ac_pred = get_bits1(&v->s.gb);
2762 v->s.ac_pred = v->acpred_plane[mb_pos];
2764 if(v->condover == CONDOVER_SELECT) {
2765 if(v->overflg_is_raw)
2766 overlap = get_bits1(&v->s.gb);
2768 overlap = v->over_flags_plane[mb_pos];
2770 overlap = (v->condover == CONDOVER_ALL);
2774 s->current_picture.qscale_table[mb_pos] = mquant;
2775 /* Set DC scale - y and c use the same */
2776 s->y_dc_scale = s->y_dc_scale_table[mquant];
2777 s->c_dc_scale = s->c_dc_scale_table[mquant];
2779 for(k = 0; k < 6; k++) {
2780 val = ((cbp >> (5 - k)) & 1);
2783 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
2787 cbp |= val << (5 - k);
2789 v->a_avail = !s->first_slice_line || (k==2 || k==3);
2790 v->c_avail = !!s->mb_x || (k==1 || k==3);
2792 vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant);
2794 v->vc1dsp.vc1_inv_trans_8x8(s->block[k]);
2795 for(j = 0; j < 64; j++) s->block[k][j] += 128;
2798 vc1_put_block(v, s->block);
2801 v->vc1dsp.vc1_h_overlap(s->dest[0], s->linesize);
2802 v->vc1dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
2803 if(!(s->flags & CODEC_FLAG_GRAY)) {
2804 v->vc1dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
2805 v->vc1dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
2808 v->vc1dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
2809 v->vc1dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
2810 if(!s->first_slice_line) {
2811 v->vc1dsp.vc1_v_overlap(s->dest[0], s->linesize);
2812 v->vc1dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
2813 if(!(s->flags & CODEC_FLAG_GRAY)) {
2814 v->vc1dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
2815 v->vc1dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
2818 v->vc1dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
2819 v->vc1dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
2821 if(v->s.loop_filter) vc1_loop_filter_iblk(v, v->pq);
2823 if(get_bits_count(&s->gb) > v->bits) {
2824 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
2825 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
2829 if (!v->s.loop_filter)
2830 ff_draw_horiz_band(s, s->mb_y * 16, 16);
2832 ff_draw_horiz_band(s, (s->mb_y-1) * 16, 16);
2833 s->first_slice_line = 0;
2835 if (v->s.loop_filter)
2836 ff_draw_horiz_band(s, (s->mb_height-1)*16, 16);
2837 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
2840 static void vc1_decode_p_blocks(VC1Context *v)
2842 MpegEncContext *s = &v->s;
2844 /* select codingmode used for VLC tables selection */
2845 switch(v->c_ac_table_index){
2847 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2850 v->codingset = CS_HIGH_MOT_INTRA;
2853 v->codingset = CS_MID_RATE_INTRA;
2857 switch(v->c_ac_table_index){
2859 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2862 v->codingset2 = CS_HIGH_MOT_INTER;
2865 v->codingset2 = CS_MID_RATE_INTER;
2869 s->first_slice_line = 1;
2870 memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride);
2871 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
2873 ff_init_block_index(s);
2874 for(; s->mb_x < s->mb_width; s->mb_x++) {
2875 ff_update_block_index(s);
2878 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
2879 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
2880 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y);
2884 memmove(v->cbp_base, v->cbp, sizeof(v->cbp_base[0])*s->mb_stride);
2885 ff_draw_horiz_band(s, s->mb_y * 16, 16);
2886 s->first_slice_line = 0;
2888 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
2891 static void vc1_decode_b_blocks(VC1Context *v)
2893 MpegEncContext *s = &v->s;
2895 /* select codingmode used for VLC tables selection */
2896 switch(v->c_ac_table_index){
2898 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2901 v->codingset = CS_HIGH_MOT_INTRA;
2904 v->codingset = CS_MID_RATE_INTRA;
2908 switch(v->c_ac_table_index){
2910 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2913 v->codingset2 = CS_HIGH_MOT_INTER;
2916 v->codingset2 = CS_MID_RATE_INTER;
2920 s->first_slice_line = 1;
2921 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
2923 ff_init_block_index(s);
2924 for(; s->mb_x < s->mb_width; s->mb_x++) {
2925 ff_update_block_index(s);
2928 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
2929 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
2930 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y);
2933 if(v->s.loop_filter) vc1_loop_filter_iblk(v, v->pq);
2935 if (!v->s.loop_filter)
2936 ff_draw_horiz_band(s, s->mb_y * 16, 16);
2938 ff_draw_horiz_band(s, (s->mb_y-1) * 16, 16);
2939 s->first_slice_line = 0;
2941 if (v->s.loop_filter)
2942 ff_draw_horiz_band(s, (s->mb_height-1)*16, 16);
2943 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
2946 static void vc1_decode_skip_blocks(VC1Context *v)
2948 MpegEncContext *s = &v->s;
2950 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
2951 s->first_slice_line = 1;
2952 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
2954 ff_init_block_index(s);
2955 ff_update_block_index(s);
2956 memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
2957 memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
2958 memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
2959 ff_draw_horiz_band(s, s->mb_y * 16, 16);
2960 s->first_slice_line = 0;
2962 s->pict_type = FF_P_TYPE;
2965 static void vc1_decode_blocks(VC1Context *v)
2968 v->s.esc3_level_length = 0;
2970 ff_intrax8_decode_picture(&v->x8, 2*v->pq+v->halfpq, v->pq*(!v->pquantizer) );
2973 switch(v->s.pict_type) {
2975 if(v->profile == PROFILE_ADVANCED)
2976 vc1_decode_i_blocks_adv(v);
2978 vc1_decode_i_blocks(v);
2981 if(v->p_frame_skipped)
2982 vc1_decode_skip_blocks(v);
2984 vc1_decode_p_blocks(v);
2988 if(v->profile == PROFILE_ADVANCED)
2989 vc1_decode_i_blocks_adv(v);
2991 vc1_decode_i_blocks(v);
2993 vc1_decode_b_blocks(v);
2999 /** Initialize a VC1/WMV3 decoder
3000 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3001 * @todo TODO: Decypher remaining bits in extra_data
3003 static av_cold int vc1_decode_init(AVCodecContext *avctx)
3005 VC1Context *v = avctx->priv_data;
3006 MpegEncContext *s = &v->s;
3010 if (!avctx->extradata_size || !avctx->extradata) return -1;
3011 if (!(avctx->flags & CODEC_FLAG_GRAY))
3012 avctx->pix_fmt = avctx->get_format(avctx, avctx->codec->pix_fmts);
3014 avctx->pix_fmt = PIX_FMT_GRAY8;
3015 avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
3017 avctx->flags |= CODEC_FLAG_EMU_EDGE;
3018 v->s.flags |= CODEC_FLAG_EMU_EDGE;
3020 if(avctx->idct_algo==FF_IDCT_AUTO){
3021 avctx->idct_algo=FF_IDCT_WMV2;
3024 if(ff_msmpeg4_decode_init(avctx) < 0)
3026 if (vc1_init_common(v) < 0) return -1;
3027 ff_vc1dsp_init(&v->vc1dsp);
3028 for (i = 0; i < 64; i++) {
3029 #define transpose(x) ((x>>3) | ((x&7)<<3))
3030 v->zz_8x8[0][i] = transpose(wmv1_scantable[0][i]);
3031 v->zz_8x8[1][i] = transpose(wmv1_scantable[1][i]);
3032 v->zz_8x8[2][i] = transpose(wmv1_scantable[2][i]);
3033 v->zz_8x8[3][i] = transpose(wmv1_scantable[3][i]);
3036 avctx->coded_width = avctx->width;
3037 avctx->coded_height = avctx->height;
3038 if (avctx->codec_id == CODEC_ID_WMV3)
3042 // looks like WMV3 has a sequence header stored in the extradata
3043 // advanced sequence header may be before the first frame
3044 // the last byte of the extradata is a version number, 1 for the
3045 // samples we can decode
3047 init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
3049 if (vc1_decode_sequence_header(avctx, v, &gb) < 0)
3052 count = avctx->extradata_size*8 - get_bits_count(&gb);
3055 av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
3056 count, get_bits(&gb, count));
3060 av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
3062 } else { // VC1/WVC1
3063 const uint8_t *start = avctx->extradata;
3064 uint8_t *end = avctx->extradata + avctx->extradata_size;
3065 const uint8_t *next;
3066 int size, buf2_size;
3067 uint8_t *buf2 = NULL;
3068 int seq_initialized = 0, ep_initialized = 0;
3070 if(avctx->extradata_size < 16) {
3071 av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
3075 buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
3076 start = find_next_marker(start, end); // in WVC1 extradata first byte is its size, but can be 0 in mkv
3078 for(; next < end; start = next){
3079 next = find_next_marker(start + 4, end);
3080 size = next - start - 4;
3081 if(size <= 0) continue;
3082 buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
3083 init_get_bits(&gb, buf2, buf2_size * 8);
3084 switch(AV_RB32(start)){
3085 case VC1_CODE_SEQHDR:
3086 if(vc1_decode_sequence_header(avctx, v, &gb) < 0){
3090 seq_initialized = 1;
3092 case VC1_CODE_ENTRYPOINT:
3093 if(vc1_decode_entry_point(avctx, v, &gb) < 0){
3102 if(!seq_initialized || !ep_initialized){
3103 av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
3107 avctx->has_b_frames= !!(avctx->max_b_frames);
3108 s->low_delay = !avctx->has_b_frames;
3110 s->mb_width = (avctx->coded_width+15)>>4;
3111 s->mb_height = (avctx->coded_height+15)>>4;
3113 /* Allocate mb bitplanes */
3114 v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3115 v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3116 v->acpred_plane = av_malloc(s->mb_stride * s->mb_height);
3117 v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height);
3119 v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
3120 v->cbp = v->cbp_base + s->mb_stride;
3122 /* allocate block type info in that way so it could be used with s->block_index[] */
3123 v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
3124 v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
3125 v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1;
3126 v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1);
3128 /* Init coded blocks info */
3129 if (v->profile == PROFILE_ADVANCED)
3131 // if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
3133 // if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
3137 ff_intrax8_common_init(&v->x8,s);
3142 /** Decode a VC1/WMV3 frame
3143 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3145 static int vc1_decode_frame(AVCodecContext *avctx,
3146 void *data, int *data_size,
3149 const uint8_t *buf = avpkt->data;
3150 int buf_size = avpkt->size;
3151 VC1Context *v = avctx->priv_data;
3152 MpegEncContext *s = &v->s;
3153 AVFrame *pict = data;
3154 uint8_t *buf2 = NULL;
3155 const uint8_t *buf_start = buf;
3157 /* no supplementary picture */
3158 if (buf_size == 0) {
3159 /* special case for last picture */
3160 if (s->low_delay==0 && s->next_picture_ptr) {
3161 *pict= *(AVFrame*)s->next_picture_ptr;
3162 s->next_picture_ptr= NULL;
3164 *data_size = sizeof(AVFrame);
3170 /* We need to set current_picture_ptr before reading the header,
3171 * otherwise we cannot store anything in there. */
3172 if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
3173 int i= ff_find_unused_picture(s, 0);
3174 s->current_picture_ptr= &s->picture[i];
3177 if (s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
3178 if (v->profile < PROFILE_ADVANCED)
3179 avctx->pix_fmt = PIX_FMT_VDPAU_WMV3;
3181 avctx->pix_fmt = PIX_FMT_VDPAU_VC1;
3184 //for advanced profile we may need to parse and unescape data
3185 if (avctx->codec_id == CODEC_ID_VC1) {
3187 buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
3189 if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
3190 const uint8_t *start, *end, *next;
3194 for(start = buf, end = buf + buf_size; next < end; start = next){
3195 next = find_next_marker(start + 4, end);
3196 size = next - start - 4;
3197 if(size <= 0) continue;
3198 switch(AV_RB32(start)){
3199 case VC1_CODE_FRAME:
3200 if (avctx->hwaccel ||
3201 s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
3203 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
3205 case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
3206 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
3207 init_get_bits(&s->gb, buf2, buf_size2*8);
3208 vc1_decode_entry_point(avctx, v, &s->gb);
3210 case VC1_CODE_SLICE:
3211 av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n");
3216 }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
3217 const uint8_t *divider;
3219 divider = find_next_marker(buf, buf + buf_size);
3220 if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
3221 av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
3226 buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
3228 if(!v->warn_interlaced++)
3229 av_log(v->s.avctx, AV_LOG_ERROR, "Interlaced WVC1 support is not implemented\n");
3230 av_free(buf2);return -1;
3232 buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
3234 init_get_bits(&s->gb, buf2, buf_size2*8);
3236 init_get_bits(&s->gb, buf, buf_size*8);
3237 // do parse frame header
3238 if(v->profile < PROFILE_ADVANCED) {
3239 if(vc1_parse_frame_header(v, &s->gb) == -1) {
3244 if(vc1_parse_frame_header_adv(v, &s->gb) == -1) {
3250 if(v->res_sprite && (s->pict_type!=FF_I_TYPE)){
3256 s->current_picture.pict_type= s->pict_type;
3257 s->current_picture.key_frame= s->pict_type == FF_I_TYPE;
3259 /* skip B-frames if we don't have reference frames */
3260 if(s->last_picture_ptr==NULL && (s->pict_type==FF_B_TYPE || s->dropable)){
3262 return -1;//buf_size;
3264 /* skip b frames if we are in a hurry */
3265 if(avctx->hurry_up && s->pict_type==FF_B_TYPE) return -1;//buf_size;
3266 if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE)
3267 || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE)
3268 || avctx->skip_frame >= AVDISCARD_ALL) {
3272 /* skip everything if we are in a hurry>=5 */
3273 if(avctx->hurry_up>=5) {
3275 return -1;//buf_size;
3278 if(s->next_p_frame_damaged){
3279 if(s->pict_type==FF_B_TYPE)
3282 s->next_p_frame_damaged=0;
3285 if(MPV_frame_start(s, avctx) < 0) {
3290 s->me.qpel_put= s->dsp.put_qpel_pixels_tab;
3291 s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
3293 if ((CONFIG_VC1_VDPAU_DECODER)
3294 &&s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
3295 ff_vdpau_vc1_decode_picture(s, buf_start, (buf + buf_size) - buf_start);
3296 else if (avctx->hwaccel) {
3297 if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0)
3299 if (avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start) < 0)
3301 if (avctx->hwaccel->end_frame(avctx) < 0)
3304 ff_er_frame_start(s);
3306 v->bits = buf_size * 8;
3307 vc1_decode_blocks(v);
3308 //av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8);
3309 // if(get_bits_count(&s->gb) > buf_size * 8)
3316 assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
3317 assert(s->current_picture.pict_type == s->pict_type);
3318 if (s->pict_type == FF_B_TYPE || s->low_delay) {
3319 *pict= *(AVFrame*)s->current_picture_ptr;
3320 } else if (s->last_picture_ptr != NULL) {
3321 *pict= *(AVFrame*)s->last_picture_ptr;
3324 if(s->last_picture_ptr || s->low_delay){
3325 *data_size = sizeof(AVFrame);
3326 ff_print_debug_info(s, pict);
3334 /** Close a VC1/WMV3 decoder
3335 * @warning Initial try at using MpegEncContext stuff
3337 static av_cold int vc1_decode_end(AVCodecContext *avctx)
3339 VC1Context *v = avctx->priv_data;
3341 av_freep(&v->hrd_rate);
3342 av_freep(&v->hrd_buffer);
3343 MPV_common_end(&v->s);
3344 av_freep(&v->mv_type_mb_plane);
3345 av_freep(&v->direct_mb_plane);
3346 av_freep(&v->acpred_plane);
3347 av_freep(&v->over_flags_plane);
3348 av_freep(&v->mb_type_base);
3349 av_freep(&v->cbp_base);
3350 ff_intrax8_common_end(&v->x8);
3355 AVCodec ff_vc1_decoder = {
3364 CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3366 .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
3367 .pix_fmts = ff_hwaccel_pixfmt_list_420
3370 #if CONFIG_WMV3_DECODER
3371 AVCodec ff_wmv3_decoder = {
3380 CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3382 .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"),
3383 .pix_fmts = ff_hwaccel_pixfmt_list_420
3387 #if CONFIG_WMV3_VDPAU_DECODER
3388 AVCodec ff_wmv3_vdpau_decoder = {
3397 CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3399 .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 VDPAU"),
3400 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_WMV3, PIX_FMT_NONE}
3404 #if CONFIG_VC1_VDPAU_DECODER
3405 AVCodec ff_vc1_vdpau_decoder = {
3414 CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3416 .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 VDPAU"),
3417 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_VC1, PIX_FMT_NONE}