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
24 * @file libavcodec/vc1dec.c
25 * VC-1 and WMV3 decoder
31 #include "mpegvideo.h"
34 #include "vc1acdata.h"
35 #include "msmpeg4data.h"
37 #include "simple_idct.h"
39 #include "vdpau_internal.h"
44 #define MB_INTRA_VLC_BITS 9
47 static const uint16_t table_mb_intra[64][2];
50 static const uint16_t vlc_offs[] = {
51 0, 520, 552, 616, 1128, 1160, 1224, 1740, 1772, 1836, 1900, 2436,
52 2986, 3050, 3610, 4154, 4218, 4746, 5326, 5390, 5902, 6554, 7658, 8620,
53 9262, 10202, 10756, 11310, 12228, 15078
57 * Init VC-1 specific tables and VC1Context members
58 * @param v The VC1Context to initialize
61 static int vc1_init_common(VC1Context *v)
65 static VLC_TYPE vlc_table[15078][2];
67 v->hrd_rate = v->hrd_buffer = NULL;
72 INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
73 ff_vc1_bfraction_bits, 1, 1,
74 ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS);
75 INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
76 ff_vc1_norm2_bits, 1, 1,
77 ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS);
78 INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
79 ff_vc1_norm6_bits, 1, 1,
80 ff_vc1_norm6_codes, 2, 2, 556);
81 INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
82 ff_vc1_imode_bits, 1, 1,
83 ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS);
86 ff_vc1_ttmb_vlc[i].table = &vlc_table[vlc_offs[i*3+0]];
87 ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i*3+1] - vlc_offs[i*3+0];
88 init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
89 ff_vc1_ttmb_bits[i], 1, 1,
90 ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
91 ff_vc1_ttblk_vlc[i].table = &vlc_table[vlc_offs[i*3+1]];
92 ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i*3+2] - vlc_offs[i*3+1];
93 init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
94 ff_vc1_ttblk_bits[i], 1, 1,
95 ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
96 ff_vc1_subblkpat_vlc[i].table = &vlc_table[vlc_offs[i*3+2]];
97 ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i*3+3] - vlc_offs[i*3+2];
98 init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
99 ff_vc1_subblkpat_bits[i], 1, 1,
100 ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
104 ff_vc1_4mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i*3+9]];
105 ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i*3+10] - vlc_offs[i*3+9];
106 init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
107 ff_vc1_4mv_block_pattern_bits[i], 1, 1,
108 ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
109 ff_vc1_cbpcy_p_vlc[i].table = &vlc_table[vlc_offs[i*3+10]];
110 ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i*3+11] - vlc_offs[i*3+10];
111 init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
112 ff_vc1_cbpcy_p_bits[i], 1, 1,
113 ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
114 ff_vc1_mv_diff_vlc[i].table = &vlc_table[vlc_offs[i*3+11]];
115 ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i*3+12] - vlc_offs[i*3+11];
116 init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
117 ff_vc1_mv_diff_bits[i], 1, 1,
118 ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
121 ff_vc1_ac_coeff_table[i].table = &vlc_table[vlc_offs[i+21]];
122 ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i+22] - vlc_offs[i+21];
123 init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i],
124 &vc1_ac_tables[i][0][1], 8, 4,
125 &vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC);
127 //FIXME: switching to INIT_VLC_STATIC() results in incorrect decoding
128 init_vlc(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64,
129 &ff_msmp4_mb_i_table[0][1], 4, 2,
130 &ff_msmp4_mb_i_table[0][0], 4, 2, INIT_VLC_USE_STATIC);
136 v->mvrange = 0; /* 7.1.1.18, p80 */
141 /***********************************************************************/
143 * @defgroup vc1bitplane VC-1 Bitplane decoding
161 /** @} */ //imode defines
164 /** @} */ //Bitplane group
166 static void vc1_loop_filter_iblk(MpegEncContext *s, int pq)
169 if(!s->first_slice_line)
170 s->dsp.vc1_v_loop_filter16(s->dest[0], s->linesize, pq);
171 s->dsp.vc1_v_loop_filter16(s->dest[0] + 8*s->linesize, s->linesize, pq);
172 for(i = !s->mb_x*8; i < 16; i += 8)
173 s->dsp.vc1_h_loop_filter16(s->dest[0] + i, s->linesize, pq);
174 for(j = 0; j < 2; j++){
175 if(!s->first_slice_line)
176 s->dsp.vc1_v_loop_filter8(s->dest[j+1], s->uvlinesize, pq);
178 s->dsp.vc1_h_loop_filter8(s->dest[j+1], s->uvlinesize, pq);
182 /** Put block onto picture
184 static void vc1_put_block(VC1Context *v, DCTELEM block[6][64])
188 DSPContext *dsp = &v->s.dsp;
192 for(k = 0; k < 6; k++)
193 for(j = 0; j < 8; j++)
194 for(i = 0; i < 8; i++)
195 block[k][i + j*8] = ((block[k][i + j*8] - 128) << 1) + 128;
198 ys = v->s.current_picture.linesize[0];
199 us = v->s.current_picture.linesize[1];
200 vs = v->s.current_picture.linesize[2];
203 dsp->put_pixels_clamped(block[0], Y, ys);
204 dsp->put_pixels_clamped(block[1], Y + 8, ys);
206 dsp->put_pixels_clamped(block[2], Y, ys);
207 dsp->put_pixels_clamped(block[3], Y + 8, ys);
209 if(!(v->s.flags & CODEC_FLAG_GRAY)) {
210 dsp->put_pixels_clamped(block[4], v->s.dest[1], us);
211 dsp->put_pixels_clamped(block[5], v->s.dest[2], vs);
215 /** Do motion compensation over 1 macroblock
216 * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
218 static void vc1_mc_1mv(VC1Context *v, int dir)
220 MpegEncContext *s = &v->s;
221 DSPContext *dsp = &v->s.dsp;
222 uint8_t *srcY, *srcU, *srcV;
223 int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
225 if(!v->s.last_picture.data[0])return;
227 mx = s->mv[dir][0][0];
228 my = s->mv[dir][0][1];
230 // store motion vectors for further use in B frames
231 if(s->pict_type == FF_P_TYPE) {
232 s->current_picture.motion_val[1][s->block_index[0]][0] = mx;
233 s->current_picture.motion_val[1][s->block_index[0]][1] = my;
235 uvmx = (mx + ((mx & 3) == 3)) >> 1;
236 uvmy = (my + ((my & 3) == 3)) >> 1;
238 uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
239 uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
242 srcY = s->last_picture.data[0];
243 srcU = s->last_picture.data[1];
244 srcV = s->last_picture.data[2];
246 srcY = s->next_picture.data[0];
247 srcU = s->next_picture.data[1];
248 srcV = s->next_picture.data[2];
251 src_x = s->mb_x * 16 + (mx >> 2);
252 src_y = s->mb_y * 16 + (my >> 2);
253 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
254 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
256 if(v->profile != PROFILE_ADVANCED){
257 src_x = av_clip( src_x, -16, s->mb_width * 16);
258 src_y = av_clip( src_y, -16, s->mb_height * 16);
259 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
260 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
262 src_x = av_clip( src_x, -17, s->avctx->coded_width);
263 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
264 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
265 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
268 srcY += src_y * s->linesize + src_x;
269 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
270 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
272 /* for grayscale we should not try to read from unknown area */
273 if(s->flags & CODEC_FLAG_GRAY) {
274 srcU = s->edge_emu_buffer + 18 * s->linesize;
275 srcV = s->edge_emu_buffer + 18 * s->linesize;
278 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
279 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
280 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
281 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
283 srcY -= s->mspel * (1 + s->linesize);
284 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
285 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
286 srcY = s->edge_emu_buffer;
287 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
288 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
289 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
290 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
293 /* if we deal with range reduction we need to scale source blocks */
299 for(j = 0; j < 17 + s->mspel*2; j++) {
300 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
303 src = srcU; src2 = srcV;
304 for(j = 0; j < 9; j++) {
305 for(i = 0; i < 9; i++) {
306 src[i] = ((src[i] - 128) >> 1) + 128;
307 src2[i] = ((src2[i] - 128) >> 1) + 128;
309 src += s->uvlinesize;
310 src2 += s->uvlinesize;
313 /* if we deal with intensity compensation we need to scale source blocks */
314 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
319 for(j = 0; j < 17 + s->mspel*2; j++) {
320 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = v->luty[src[i]];
323 src = srcU; src2 = srcV;
324 for(j = 0; j < 9; j++) {
325 for(i = 0; i < 9; i++) {
326 src[i] = v->lutuv[src[i]];
327 src2[i] = v->lutuv[src2[i]];
329 src += s->uvlinesize;
330 src2 += s->uvlinesize;
333 srcY += s->mspel * (1 + s->linesize);
337 dxy = ((my & 3) << 2) | (mx & 3);
338 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
339 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
340 srcY += s->linesize * 8;
341 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd);
342 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
343 } else { // hpel mc - always used for luma
344 dxy = (my & 2) | ((mx & 2) >> 1);
347 dsp->put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
349 dsp->put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
352 if(s->flags & CODEC_FLAG_GRAY) return;
353 /* Chroma MC always uses qpel bilinear */
357 dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
358 dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
360 dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
361 dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
365 /** Do motion compensation for 4-MV macroblock - luminance block
367 static void vc1_mc_4mv_luma(VC1Context *v, int n)
369 MpegEncContext *s = &v->s;
370 DSPContext *dsp = &v->s.dsp;
372 int dxy, mx, my, src_x, src_y;
375 if(!v->s.last_picture.data[0])return;
378 srcY = s->last_picture.data[0];
380 off = s->linesize * 4 * (n&2) + (n&1) * 8;
382 src_x = s->mb_x * 16 + (n&1) * 8 + (mx >> 2);
383 src_y = s->mb_y * 16 + (n&2) * 4 + (my >> 2);
385 if(v->profile != PROFILE_ADVANCED){
386 src_x = av_clip( src_x, -16, s->mb_width * 16);
387 src_y = av_clip( src_y, -16, s->mb_height * 16);
389 src_x = av_clip( src_x, -17, s->avctx->coded_width);
390 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
393 srcY += src_y * s->linesize + src_x;
395 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
396 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 8 - s->mspel*2
397 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 8 - s->mspel*2){
398 srcY -= s->mspel * (1 + s->linesize);
399 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 9+s->mspel*2, 9+s->mspel*2,
400 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
401 srcY = s->edge_emu_buffer;
402 /* if we deal with range reduction we need to scale source blocks */
408 for(j = 0; j < 9 + s->mspel*2; j++) {
409 for(i = 0; i < 9 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
413 /* if we deal with intensity compensation we need to scale source blocks */
414 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
419 for(j = 0; j < 9 + s->mspel*2; j++) {
420 for(i = 0; i < 9 + s->mspel*2; i++) src[i] = v->luty[src[i]];
424 srcY += s->mspel * (1 + s->linesize);
428 dxy = ((my & 3) << 2) | (mx & 3);
429 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, v->rnd);
430 } else { // hpel mc - always used for luma
431 dxy = (my & 2) | ((mx & 2) >> 1);
433 dsp->put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
435 dsp->put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
439 static inline int median4(int a, int b, int c, int d)
442 if(c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2;
443 else return (FFMIN(b, c) + FFMAX(a, d)) / 2;
445 if(c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2;
446 else return (FFMIN(a, c) + FFMAX(b, d)) / 2;
451 /** Do motion compensation for 4-MV macroblock - both chroma blocks
453 static void vc1_mc_4mv_chroma(VC1Context *v)
455 MpegEncContext *s = &v->s;
456 DSPContext *dsp = &v->s.dsp;
457 uint8_t *srcU, *srcV;
458 int uvmx, uvmy, uvsrc_x, uvsrc_y;
459 int i, idx, tx = 0, ty = 0;
460 int mvx[4], mvy[4], intra[4];
461 static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
463 if(!v->s.last_picture.data[0])return;
464 if(s->flags & CODEC_FLAG_GRAY) return;
466 for(i = 0; i < 4; i++) {
467 mvx[i] = s->mv[0][i][0];
468 mvy[i] = s->mv[0][i][1];
469 intra[i] = v->mb_type[0][s->block_index[i]];
472 /* calculate chroma MV vector from four luma MVs */
473 idx = (intra[3] << 3) | (intra[2] << 2) | (intra[1] << 1) | intra[0];
474 if(!idx) { // all blocks are inter
475 tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]);
476 ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]);
477 } else if(count[idx] == 1) { // 3 inter blocks
480 tx = mid_pred(mvx[1], mvx[2], mvx[3]);
481 ty = mid_pred(mvy[1], mvy[2], mvy[3]);
484 tx = mid_pred(mvx[0], mvx[2], mvx[3]);
485 ty = mid_pred(mvy[0], mvy[2], mvy[3]);
488 tx = mid_pred(mvx[0], mvx[1], mvx[3]);
489 ty = mid_pred(mvy[0], mvy[1], mvy[3]);
492 tx = mid_pred(mvx[0], mvx[1], mvx[2]);
493 ty = mid_pred(mvy[0], mvy[1], mvy[2]);
496 } else if(count[idx] == 2) {
498 for(i=0; i<3;i++) if(!intra[i]) {t1 = i; break;}
499 for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;}
500 tx = (mvx[t1] + mvx[t2]) / 2;
501 ty = (mvy[t1] + mvy[t2]) / 2;
503 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
504 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
505 return; //no need to do MC for inter blocks
508 s->current_picture.motion_val[1][s->block_index[0]][0] = tx;
509 s->current_picture.motion_val[1][s->block_index[0]][1] = ty;
510 uvmx = (tx + ((tx&3) == 3)) >> 1;
511 uvmy = (ty + ((ty&3) == 3)) >> 1;
513 uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
514 uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
517 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
518 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
520 if(v->profile != PROFILE_ADVANCED){
521 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
522 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
524 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
525 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
528 srcU = s->last_picture.data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
529 srcV = s->last_picture.data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
530 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
531 || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
532 || (unsigned)uvsrc_y > (s->v_edge_pos >> 1) - 9){
533 ff_emulated_edge_mc(s->edge_emu_buffer , srcU, s->uvlinesize, 8+1, 8+1,
534 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
535 ff_emulated_edge_mc(s->edge_emu_buffer + 16, srcV, s->uvlinesize, 8+1, 8+1,
536 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
537 srcU = s->edge_emu_buffer;
538 srcV = s->edge_emu_buffer + 16;
540 /* if we deal with range reduction we need to scale source blocks */
545 src = srcU; src2 = srcV;
546 for(j = 0; j < 9; j++) {
547 for(i = 0; i < 9; i++) {
548 src[i] = ((src[i] - 128) >> 1) + 128;
549 src2[i] = ((src2[i] - 128) >> 1) + 128;
551 src += s->uvlinesize;
552 src2 += s->uvlinesize;
555 /* if we deal with intensity compensation we need to scale source blocks */
556 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
560 src = srcU; src2 = srcV;
561 for(j = 0; j < 9; j++) {
562 for(i = 0; i < 9; i++) {
563 src[i] = v->lutuv[src[i]];
564 src2[i] = v->lutuv[src2[i]];
566 src += s->uvlinesize;
567 src2 += s->uvlinesize;
572 /* Chroma MC always uses qpel bilinear */
576 dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
577 dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
579 dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
580 dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
584 /***********************************************************************/
586 * @defgroup vc1block VC-1 Block-level functions
587 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
593 * @brief Get macroblock-level quantizer scale
595 #define GET_MQUANT() \
599 if (v->dqprofile == DQPROFILE_ALL_MBS) \
603 mquant = (get_bits1(gb)) ? v->altpq : v->pq; \
607 mqdiff = get_bits(gb, 3); \
608 if (mqdiff != 7) mquant = v->pq + mqdiff; \
609 else mquant = get_bits(gb, 5); \
612 if(v->dqprofile == DQPROFILE_SINGLE_EDGE) \
613 edges = 1 << v->dqsbedge; \
614 else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
615 edges = (3 << v->dqsbedge) % 15; \
616 else if(v->dqprofile == DQPROFILE_FOUR_EDGES) \
618 if((edges&1) && !s->mb_x) \
620 if((edges&2) && s->first_slice_line) \
622 if((edges&4) && s->mb_x == (s->mb_width - 1)) \
624 if((edges&8) && s->mb_y == (s->mb_height - 1)) \
629 * @def GET_MVDATA(_dmv_x, _dmv_y)
630 * @brief Get MV differentials
631 * @see MVDATA decoding from 8.3.5.2, p(1)20
632 * @param _dmv_x Horizontal differential for decoded MV
633 * @param _dmv_y Vertical differential for decoded MV
635 #define GET_MVDATA(_dmv_x, _dmv_y) \
636 index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table,\
637 VC1_MV_DIFF_VLC_BITS, 2); \
643 else mb_has_coeffs = 0; \
645 if (!index) { _dmv_x = _dmv_y = 0; } \
646 else if (index == 35) \
648 _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
649 _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
651 else if (index == 36) \
660 if (!s->quarter_sample && index1 == 5) val = 1; \
662 if(size_table[index1] - val > 0) \
663 val = get_bits(gb, size_table[index1] - val); \
665 sign = 0 - (val&1); \
666 _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
669 if (!s->quarter_sample && index1 == 5) val = 1; \
671 if(size_table[index1] - val > 0) \
672 val = get_bits(gb, size_table[index1] - val); \
674 sign = 0 - (val&1); \
675 _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
678 /** Predict and set motion vector
680 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)
682 int xy, wrap, off = 0;
687 /* scale MV difference to be quad-pel */
688 dmv_x <<= 1 - s->quarter_sample;
689 dmv_y <<= 1 - s->quarter_sample;
692 xy = s->block_index[n];
695 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
696 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
697 s->current_picture.motion_val[1][xy][0] = 0;
698 s->current_picture.motion_val[1][xy][1] = 0;
699 if(mv1) { /* duplicate motion data for 1-MV block */
700 s->current_picture.motion_val[0][xy + 1][0] = 0;
701 s->current_picture.motion_val[0][xy + 1][1] = 0;
702 s->current_picture.motion_val[0][xy + wrap][0] = 0;
703 s->current_picture.motion_val[0][xy + wrap][1] = 0;
704 s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
705 s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
706 s->current_picture.motion_val[1][xy + 1][0] = 0;
707 s->current_picture.motion_val[1][xy + 1][1] = 0;
708 s->current_picture.motion_val[1][xy + wrap][0] = 0;
709 s->current_picture.motion_val[1][xy + wrap][1] = 0;
710 s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
711 s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
716 C = s->current_picture.motion_val[0][xy - 1];
717 A = s->current_picture.motion_val[0][xy - wrap];
719 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
721 //in 4-MV mode different blocks have different B predictor position
724 off = (s->mb_x > 0) ? -1 : 1;
727 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
736 B = s->current_picture.motion_val[0][xy - wrap + off];
738 if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds
739 if(s->mb_width == 1) {
743 px = mid_pred(A[0], B[0], C[0]);
744 py = mid_pred(A[1], B[1], C[1]);
746 } else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds
752 /* Pullback MV as specified in 8.3.5.3.4 */
755 qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0);
756 qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0);
757 X = (s->mb_width << 6) - 4;
758 Y = (s->mb_height << 6) - 4;
760 if(qx + px < -60) px = -60 - qx;
761 if(qy + py < -60) py = -60 - qy;
763 if(qx + px < -28) px = -28 - qx;
764 if(qy + py < -28) py = -28 - qy;
766 if(qx + px > X) px = X - qx;
767 if(qy + py > Y) py = Y - qy;
769 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
770 if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) {
771 if(is_intra[xy - wrap])
772 sum = FFABS(px) + FFABS(py);
774 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
776 if(get_bits1(&s->gb)) {
785 sum = FFABS(px) + FFABS(py);
787 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
789 if(get_bits1(&s->gb)) {
799 /* store MV using signed modulus of MV range defined in 4.11 */
800 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
801 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
802 if(mv1) { /* duplicate motion data for 1-MV block */
803 s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0];
804 s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1];
805 s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0];
806 s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1];
807 s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0];
808 s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1];
812 /** Motion compensation for direct or interpolated blocks in B-frames
814 static void vc1_interp_mc(VC1Context *v)
816 MpegEncContext *s = &v->s;
817 DSPContext *dsp = &v->s.dsp;
818 uint8_t *srcY, *srcU, *srcV;
819 int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
821 if(!v->s.next_picture.data[0])return;
825 uvmx = (mx + ((mx & 3) == 3)) >> 1;
826 uvmy = (my + ((my & 3) == 3)) >> 1;
828 uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
829 uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
831 srcY = s->next_picture.data[0];
832 srcU = s->next_picture.data[1];
833 srcV = s->next_picture.data[2];
835 src_x = s->mb_x * 16 + (mx >> 2);
836 src_y = s->mb_y * 16 + (my >> 2);
837 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
838 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
840 if(v->profile != PROFILE_ADVANCED){
841 src_x = av_clip( src_x, -16, s->mb_width * 16);
842 src_y = av_clip( src_y, -16, s->mb_height * 16);
843 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
844 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
846 src_x = av_clip( src_x, -17, s->avctx->coded_width);
847 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
848 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
849 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
852 srcY += src_y * s->linesize + src_x;
853 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
854 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
856 /* for grayscale we should not try to read from unknown area */
857 if(s->flags & CODEC_FLAG_GRAY) {
858 srcU = s->edge_emu_buffer + 18 * s->linesize;
859 srcV = s->edge_emu_buffer + 18 * s->linesize;
863 || (unsigned)src_x > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
864 || (unsigned)src_y > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
865 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
867 srcY -= s->mspel * (1 + s->linesize);
868 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
869 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
870 srcY = s->edge_emu_buffer;
871 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
872 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
873 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
874 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
877 /* if we deal with range reduction we need to scale source blocks */
883 for(j = 0; j < 17 + s->mspel*2; j++) {
884 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
887 src = srcU; src2 = srcV;
888 for(j = 0; j < 9; j++) {
889 for(i = 0; i < 9; i++) {
890 src[i] = ((src[i] - 128) >> 1) + 128;
891 src2[i] = ((src2[i] - 128) >> 1) + 128;
893 src += s->uvlinesize;
894 src2 += s->uvlinesize;
897 srcY += s->mspel * (1 + s->linesize);
901 dxy = ((my & 3) << 2) | (mx & 3);
902 dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
903 dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
904 srcY += s->linesize * 8;
905 dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd);
906 dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
908 dxy = (my & 2) | ((mx & 2) >> 1);
911 dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
913 dsp->avg_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
916 if(s->flags & CODEC_FLAG_GRAY) return;
917 /* Chroma MC always uses qpel blilinear */
921 dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
922 dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
924 dsp->avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
925 dsp->avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
929 static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
933 #if B_FRACTION_DEN==256
937 return 2 * ((value * n + 255) >> 9);
938 return (value * n + 128) >> 8;
943 return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
944 return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
948 /** Reconstruct motion vector for B-frame and do motion compensation
950 static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
953 v->mv_mode2 = v->mv_mode;
954 v->mv_mode = MV_PMODE_INTENSITY_COMP;
959 if(v->use_ic) v->mv_mode = v->mv_mode2;
962 if(mode == BMV_TYPE_INTERPOLATED) {
965 if(v->use_ic) v->mv_mode = v->mv_mode2;
969 if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2;
970 vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
971 if(v->use_ic) v->mv_mode = v->mv_mode2;
974 static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype)
976 MpegEncContext *s = &v->s;
977 int xy, wrap, off = 0;
982 const uint8_t *is_intra = v->mb_type[0];
986 /* scale MV difference to be quad-pel */
987 dmv_x[0] <<= 1 - s->quarter_sample;
988 dmv_y[0] <<= 1 - s->quarter_sample;
989 dmv_x[1] <<= 1 - s->quarter_sample;
990 dmv_y[1] <<= 1 - s->quarter_sample;
993 xy = s->block_index[0];
996 s->current_picture.motion_val[0][xy][0] =
997 s->current_picture.motion_val[0][xy][1] =
998 s->current_picture.motion_val[1][xy][0] =
999 s->current_picture.motion_val[1][xy][1] = 0;
1002 s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
1003 s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
1004 s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
1005 s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
1007 /* Pullback predicted motion vectors as specified in 8.4.5.4 */
1008 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));
1009 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));
1010 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));
1011 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));
1013 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
1014 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
1015 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
1016 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
1020 if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
1021 C = s->current_picture.motion_val[0][xy - 2];
1022 A = s->current_picture.motion_val[0][xy - wrap*2];
1023 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
1024 B = s->current_picture.motion_val[0][xy - wrap*2 + off];
1026 if(!s->mb_x) C[0] = C[1] = 0;
1027 if(!s->first_slice_line) { // predictor A is not out of bounds
1028 if(s->mb_width == 1) {
1032 px = mid_pred(A[0], B[0], C[0]);
1033 py = mid_pred(A[1], B[1], C[1]);
1035 } else if(s->mb_x) { // predictor C is not out of bounds
1041 /* Pullback MV as specified in 8.3.5.3.4 */
1044 if(v->profile < PROFILE_ADVANCED) {
1045 qx = (s->mb_x << 5);
1046 qy = (s->mb_y << 5);
1047 X = (s->mb_width << 5) - 4;
1048 Y = (s->mb_height << 5) - 4;
1049 if(qx + px < -28) px = -28 - qx;
1050 if(qy + py < -28) py = -28 - qy;
1051 if(qx + px > X) px = X - qx;
1052 if(qy + py > Y) py = Y - qy;
1054 qx = (s->mb_x << 6);
1055 qy = (s->mb_y << 6);
1056 X = (s->mb_width << 6) - 4;
1057 Y = (s->mb_height << 6) - 4;
1058 if(qx + px < -60) px = -60 - qx;
1059 if(qy + py < -60) py = -60 - qy;
1060 if(qx + px > X) px = X - qx;
1061 if(qy + py > Y) py = Y - qy;
1064 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1065 if(0 && !s->first_slice_line && s->mb_x) {
1066 if(is_intra[xy - wrap])
1067 sum = FFABS(px) + FFABS(py);
1069 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1071 if(get_bits1(&s->gb)) {
1079 if(is_intra[xy - 2])
1080 sum = FFABS(px) + FFABS(py);
1082 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1084 if(get_bits1(&s->gb)) {
1094 /* store MV using signed modulus of MV range defined in 4.11 */
1095 s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
1096 s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
1098 if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
1099 C = s->current_picture.motion_val[1][xy - 2];
1100 A = s->current_picture.motion_val[1][xy - wrap*2];
1101 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
1102 B = s->current_picture.motion_val[1][xy - wrap*2 + off];
1104 if(!s->mb_x) C[0] = C[1] = 0;
1105 if(!s->first_slice_line) { // predictor A is not out of bounds
1106 if(s->mb_width == 1) {
1110 px = mid_pred(A[0], B[0], C[0]);
1111 py = mid_pred(A[1], B[1], C[1]);
1113 } else if(s->mb_x) { // predictor C is not out of bounds
1119 /* Pullback MV as specified in 8.3.5.3.4 */
1122 if(v->profile < PROFILE_ADVANCED) {
1123 qx = (s->mb_x << 5);
1124 qy = (s->mb_y << 5);
1125 X = (s->mb_width << 5) - 4;
1126 Y = (s->mb_height << 5) - 4;
1127 if(qx + px < -28) px = -28 - qx;
1128 if(qy + py < -28) py = -28 - qy;
1129 if(qx + px > X) px = X - qx;
1130 if(qy + py > Y) py = Y - qy;
1132 qx = (s->mb_x << 6);
1133 qy = (s->mb_y << 6);
1134 X = (s->mb_width << 6) - 4;
1135 Y = (s->mb_height << 6) - 4;
1136 if(qx + px < -60) px = -60 - qx;
1137 if(qy + py < -60) py = -60 - qy;
1138 if(qx + px > X) px = X - qx;
1139 if(qy + py > Y) py = Y - qy;
1142 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1143 if(0 && !s->first_slice_line && s->mb_x) {
1144 if(is_intra[xy - wrap])
1145 sum = FFABS(px) + FFABS(py);
1147 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1149 if(get_bits1(&s->gb)) {
1157 if(is_intra[xy - 2])
1158 sum = FFABS(px) + FFABS(py);
1160 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1162 if(get_bits1(&s->gb)) {
1172 /* store MV using signed modulus of MV range defined in 4.11 */
1174 s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
1175 s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
1177 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
1178 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
1179 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
1180 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
1183 /** Get predicted DC value for I-frames only
1184 * prediction dir: left=0, top=1
1185 * @param s MpegEncContext
1186 * @param overlap flag indicating that overlap filtering is used
1187 * @param pq integer part of picture quantizer
1188 * @param[in] n block index in the current MB
1189 * @param dc_val_ptr Pointer to DC predictor
1190 * @param dir_ptr Prediction direction for use in AC prediction
1192 static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
1193 int16_t **dc_val_ptr, int *dir_ptr)
1195 int a, b, c, wrap, pred, scale;
1197 static const uint16_t dcpred[32] = {
1198 -1, 1024, 512, 341, 256, 205, 171, 146, 128,
1199 114, 102, 93, 85, 79, 73, 68, 64,
1200 60, 57, 54, 51, 49, 47, 45, 43,
1201 41, 39, 38, 37, 35, 34, 33
1204 /* find prediction - wmv3_dc_scale always used here in fact */
1205 if (n < 4) scale = s->y_dc_scale;
1206 else scale = s->c_dc_scale;
1208 wrap = s->block_wrap[n];
1209 dc_val= s->dc_val[0] + s->block_index[n];
1215 b = dc_val[ - 1 - wrap];
1216 a = dc_val[ - wrap];
1218 if (pq < 9 || !overlap)
1220 /* Set outer values */
1221 if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
1222 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
1226 /* Set outer values */
1227 if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
1228 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
1231 if (abs(a - b) <= abs(b - c)) {
1239 /* update predictor */
1240 *dc_val_ptr = &dc_val[0];
1245 /** Get predicted DC value
1246 * prediction dir: left=0, top=1
1247 * @param s MpegEncContext
1248 * @param overlap flag indicating that overlap filtering is used
1249 * @param pq integer part of picture quantizer
1250 * @param[in] n block index in the current MB
1251 * @param a_avail flag indicating top block availability
1252 * @param c_avail flag indicating left block availability
1253 * @param dc_val_ptr Pointer to DC predictor
1254 * @param dir_ptr Prediction direction for use in AC prediction
1256 static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
1257 int a_avail, int c_avail,
1258 int16_t **dc_val_ptr, int *dir_ptr)
1260 int a, b, c, wrap, pred;
1262 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1265 wrap = s->block_wrap[n];
1266 dc_val= s->dc_val[0] + s->block_index[n];
1272 b = dc_val[ - 1 - wrap];
1273 a = dc_val[ - wrap];
1274 /* scale predictors if needed */
1275 q1 = s->current_picture.qscale_table[mb_pos];
1276 if(c_avail && (n!= 1 && n!=3)) {
1277 q2 = s->current_picture.qscale_table[mb_pos - 1];
1279 c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
1281 if(a_avail && (n!= 2 && n!=3)) {
1282 q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
1284 a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
1286 if(a_avail && c_avail && (n!=3)) {
1289 if(n != 2) off -= s->mb_stride;
1290 q2 = s->current_picture.qscale_table[off];
1292 b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
1295 if(a_avail && c_avail) {
1296 if(abs(a - b) <= abs(b - c)) {
1303 } else if(a_avail) {
1306 } else if(c_avail) {
1314 /* update predictor */
1315 *dc_val_ptr = &dc_val[0];
1319 /** @} */ // Block group
1322 * @defgroup vc1_std_mb VC1 Macroblock-level functions in Simple/Main Profiles
1323 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
1327 static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
1329 int xy, wrap, pred, a, b, c;
1331 xy = s->block_index[n];
1332 wrap = s->b8_stride;
1337 a = s->coded_block[xy - 1 ];
1338 b = s->coded_block[xy - 1 - wrap];
1339 c = s->coded_block[xy - wrap];
1348 *coded_block_ptr = &s->coded_block[xy];
1354 * Decode one AC coefficient
1355 * @param v The VC1 context
1356 * @param last Last coefficient
1357 * @param skip How much zero coefficients to skip
1358 * @param value Decoded AC coefficient value
1359 * @param codingset set of VLC to decode data
1362 static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset)
1364 GetBitContext *gb = &v->s.gb;
1365 int index, escape, run = 0, level = 0, lst = 0;
1367 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
1368 if (index != vc1_ac_sizes[codingset] - 1) {
1369 run = vc1_index_decode_table[codingset][index][0];
1370 level = vc1_index_decode_table[codingset][index][1];
1371 lst = index >= vc1_last_decode_table[codingset];
1375 escape = decode210(gb);
1377 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
1378 run = vc1_index_decode_table[codingset][index][0];
1379 level = vc1_index_decode_table[codingset][index][1];
1380 lst = index >= vc1_last_decode_table[codingset];
1383 level += vc1_last_delta_level_table[codingset][run];
1385 level += vc1_delta_level_table[codingset][run];
1388 run += vc1_last_delta_run_table[codingset][level] + 1;
1390 run += vc1_delta_run_table[codingset][level] + 1;
1396 lst = get_bits1(gb);
1397 if(v->s.esc3_level_length == 0) {
1398 if(v->pq < 8 || v->dquantfrm) { // table 59
1399 v->s.esc3_level_length = get_bits(gb, 3);
1400 if(!v->s.esc3_level_length)
1401 v->s.esc3_level_length = get_bits(gb, 2) + 8;
1403 v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
1405 v->s.esc3_run_length = 3 + get_bits(gb, 2);
1407 run = get_bits(gb, v->s.esc3_run_length);
1408 sign = get_bits1(gb);
1409 level = get_bits(gb, v->s.esc3_level_length);
1420 /** Decode intra block in intra frames - should be faster than decode_intra_block
1421 * @param v VC1Context
1422 * @param block block to decode
1423 * @param[in] n subblock index
1424 * @param coded are AC coeffs present or not
1425 * @param codingset set of VLC to decode data
1427 static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset)
1429 GetBitContext *gb = &v->s.gb;
1430 MpegEncContext *s = &v->s;
1431 int dc_pred_dir = 0; /* Direction of the DC prediction used */
1434 int16_t *ac_val, *ac_val2;
1437 /* Get DC differential */
1439 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
1441 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
1444 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
1449 if (dcdiff == 119 /* ESC index value */)
1451 /* TODO: Optimize */
1452 if (v->pq == 1) dcdiff = get_bits(gb, 10);
1453 else if (v->pq == 2) dcdiff = get_bits(gb, 9);
1454 else dcdiff = get_bits(gb, 8);
1459 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
1460 else if (v->pq == 2)
1461 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
1468 dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
1471 /* Store the quantized DC coeff, used for prediction */
1473 block[0] = dcdiff * s->y_dc_scale;
1475 block[0] = dcdiff * s->c_dc_scale;
1486 int last = 0, skip, value;
1487 const int8_t *zz_table;
1491 scale = v->pq * 2 + v->halfpq;
1495 zz_table = wmv1_scantable[2];
1497 zz_table = wmv1_scantable[3];
1499 zz_table = wmv1_scantable[1];
1501 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
1503 if(dc_pred_dir) //left
1506 ac_val -= 16 * s->block_wrap[n];
1509 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
1513 block[zz_table[i++]] = value;
1516 /* apply AC prediction if needed */
1518 if(dc_pred_dir) { //left
1519 for(k = 1; k < 8; k++)
1520 block[k << 3] += ac_val[k];
1522 for(k = 1; k < 8; k++)
1523 block[k] += ac_val[k + 8];
1526 /* save AC coeffs for further prediction */
1527 for(k = 1; k < 8; k++) {
1528 ac_val2[k] = block[k << 3];
1529 ac_val2[k + 8] = block[k];
1532 /* scale AC coeffs */
1533 for(k = 1; k < 64; k++)
1537 block[k] += (block[k] < 0) ? -v->pq : v->pq;
1540 if(s->ac_pred) i = 63;
1546 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
1550 scale = v->pq * 2 + v->halfpq;
1551 memset(ac_val2, 0, 16 * 2);
1552 if(dc_pred_dir) {//left
1555 memcpy(ac_val2, ac_val, 8 * 2);
1557 ac_val -= 16 * s->block_wrap[n];
1559 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
1562 /* apply AC prediction if needed */
1564 if(dc_pred_dir) { //left
1565 for(k = 1; k < 8; k++) {
1566 block[k << 3] = ac_val[k] * scale;
1567 if(!v->pquantizer && block[k << 3])
1568 block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq;
1571 for(k = 1; k < 8; k++) {
1572 block[k] = ac_val[k + 8] * scale;
1573 if(!v->pquantizer && block[k])
1574 block[k] += (block[k] < 0) ? -v->pq : v->pq;
1580 s->block_last_index[n] = i;
1585 /** Decode intra block in intra frames - should be faster than decode_intra_block
1586 * @param v VC1Context
1587 * @param block block to decode
1588 * @param[in] n subblock number
1589 * @param coded are AC coeffs present or not
1590 * @param codingset set of VLC to decode data
1591 * @param mquant quantizer value for this macroblock
1593 static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant)
1595 GetBitContext *gb = &v->s.gb;
1596 MpegEncContext *s = &v->s;
1597 int dc_pred_dir = 0; /* Direction of the DC prediction used */
1600 int16_t *ac_val, *ac_val2;
1602 int a_avail = v->a_avail, c_avail = v->c_avail;
1603 int use_pred = s->ac_pred;
1606 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1608 /* Get DC differential */
1610 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
1612 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
1615 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
1620 if (dcdiff == 119 /* ESC index value */)
1622 /* TODO: Optimize */
1623 if (mquant == 1) dcdiff = get_bits(gb, 10);
1624 else if (mquant == 2) dcdiff = get_bits(gb, 9);
1625 else dcdiff = get_bits(gb, 8);
1630 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
1631 else if (mquant == 2)
1632 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
1639 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
1642 /* Store the quantized DC coeff, used for prediction */
1644 block[0] = dcdiff * s->y_dc_scale;
1646 block[0] = dcdiff * s->c_dc_scale;
1652 /* check if AC is needed at all */
1653 if(!a_avail && !c_avail) use_pred = 0;
1654 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
1657 scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0);
1659 if(dc_pred_dir) //left
1662 ac_val -= 16 * s->block_wrap[n];
1664 q1 = s->current_picture.qscale_table[mb_pos];
1665 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
1666 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
1667 if(dc_pred_dir && n==1) q2 = q1;
1668 if(!dc_pred_dir && n==2) q2 = q1;
1672 int last = 0, skip, value;
1673 const int8_t *zz_table;
1678 zz_table = wmv1_scantable[2];
1680 zz_table = wmv1_scantable[3];
1682 zz_table = wmv1_scantable[1];
1685 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
1689 block[zz_table[i++]] = value;
1692 /* apply AC prediction if needed */
1694 /* scale predictors if needed*/
1696 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
1697 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
1699 if(dc_pred_dir) { //left
1700 for(k = 1; k < 8; k++)
1701 block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1703 for(k = 1; k < 8; k++)
1704 block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1707 if(dc_pred_dir) { //left
1708 for(k = 1; k < 8; k++)
1709 block[k << 3] += ac_val[k];
1711 for(k = 1; k < 8; k++)
1712 block[k] += ac_val[k + 8];
1716 /* save AC coeffs for further prediction */
1717 for(k = 1; k < 8; k++) {
1718 ac_val2[k] = block[k << 3];
1719 ac_val2[k + 8] = block[k];
1722 /* scale AC coeffs */
1723 for(k = 1; k < 64; k++)
1727 block[k] += (block[k] < 0) ? -mquant : mquant;
1730 if(use_pred) i = 63;
1731 } else { // no AC coeffs
1734 memset(ac_val2, 0, 16 * 2);
1735 if(dc_pred_dir) {//left
1737 memcpy(ac_val2, ac_val, 8 * 2);
1739 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
1740 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
1741 for(k = 1; k < 8; k++)
1742 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1747 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
1749 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
1750 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
1751 for(k = 1; k < 8; k++)
1752 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1757 /* apply AC prediction if needed */
1759 if(dc_pred_dir) { //left
1760 for(k = 1; k < 8; k++) {
1761 block[k << 3] = ac_val2[k] * scale;
1762 if(!v->pquantizer && block[k << 3])
1763 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
1766 for(k = 1; k < 8; k++) {
1767 block[k] = ac_val2[k + 8] * scale;
1768 if(!v->pquantizer && block[k])
1769 block[k] += (block[k] < 0) ? -mquant : mquant;
1775 s->block_last_index[n] = i;
1780 /** Decode intra block in inter frames - more generic version than vc1_decode_i_block
1781 * @param v VC1Context
1782 * @param block block to decode
1783 * @param[in] n subblock index
1784 * @param coded are AC coeffs present or not
1785 * @param mquant block quantizer
1786 * @param codingset set of VLC to decode data
1788 static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset)
1790 GetBitContext *gb = &v->s.gb;
1791 MpegEncContext *s = &v->s;
1792 int dc_pred_dir = 0; /* Direction of the DC prediction used */
1795 int16_t *ac_val, *ac_val2;
1797 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1798 int a_avail = v->a_avail, c_avail = v->c_avail;
1799 int use_pred = s->ac_pred;
1803 /* XXX: Guard against dumb values of mquant */
1804 mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
1806 /* Set DC scale - y and c use the same */
1807 s->y_dc_scale = s->y_dc_scale_table[mquant];
1808 s->c_dc_scale = s->c_dc_scale_table[mquant];
1810 /* Get DC differential */
1812 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
1814 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
1817 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
1822 if (dcdiff == 119 /* ESC index value */)
1824 /* TODO: Optimize */
1825 if (mquant == 1) dcdiff = get_bits(gb, 10);
1826 else if (mquant == 2) dcdiff = get_bits(gb, 9);
1827 else dcdiff = get_bits(gb, 8);
1832 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
1833 else if (mquant == 2)
1834 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
1841 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
1844 /* Store the quantized DC coeff, used for prediction */
1847 block[0] = dcdiff * s->y_dc_scale;
1849 block[0] = dcdiff * s->c_dc_scale;
1855 /* check if AC is needed at all and adjust direction if needed */
1856 if(!a_avail) dc_pred_dir = 1;
1857 if(!c_avail) dc_pred_dir = 0;
1858 if(!a_avail && !c_avail) use_pred = 0;
1859 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
1862 scale = mquant * 2 + v->halfpq;
1864 if(dc_pred_dir) //left
1867 ac_val -= 16 * s->block_wrap[n];
1869 q1 = s->current_picture.qscale_table[mb_pos];
1870 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
1871 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
1872 if(dc_pred_dir && n==1) q2 = q1;
1873 if(!dc_pred_dir && n==2) q2 = q1;
1877 int last = 0, skip, value;
1878 const int8_t *zz_table;
1881 zz_table = wmv1_scantable[0];
1884 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
1888 block[zz_table[i++]] = value;
1891 /* apply AC prediction if needed */
1893 /* scale predictors if needed*/
1895 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
1896 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
1898 if(dc_pred_dir) { //left
1899 for(k = 1; k < 8; k++)
1900 block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1902 for(k = 1; k < 8; k++)
1903 block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1906 if(dc_pred_dir) { //left
1907 for(k = 1; k < 8; k++)
1908 block[k << 3] += ac_val[k];
1910 for(k = 1; k < 8; k++)
1911 block[k] += ac_val[k + 8];
1915 /* save AC coeffs for further prediction */
1916 for(k = 1; k < 8; k++) {
1917 ac_val2[k] = block[k << 3];
1918 ac_val2[k + 8] = block[k];
1921 /* scale AC coeffs */
1922 for(k = 1; k < 64; k++)
1926 block[k] += (block[k] < 0) ? -mquant : mquant;
1929 if(use_pred) i = 63;
1930 } else { // no AC coeffs
1933 memset(ac_val2, 0, 16 * 2);
1934 if(dc_pred_dir) {//left
1936 memcpy(ac_val2, ac_val, 8 * 2);
1938 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
1939 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
1940 for(k = 1; k < 8; k++)
1941 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1946 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
1948 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
1949 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
1950 for(k = 1; k < 8; k++)
1951 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1956 /* apply AC prediction if needed */
1958 if(dc_pred_dir) { //left
1959 for(k = 1; k < 8; k++) {
1960 block[k << 3] = ac_val2[k] * scale;
1961 if(!v->pquantizer && block[k << 3])
1962 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
1965 for(k = 1; k < 8; k++) {
1966 block[k] = ac_val2[k + 8] * scale;
1967 if(!v->pquantizer && block[k])
1968 block[k] += (block[k] < 0) ? -mquant : mquant;
1974 s->block_last_index[n] = i;
1981 static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block,
1982 uint8_t *dst, int linesize, int skip_block, int apply_filter, int cbp_top, int cbp_left)
1984 MpegEncContext *s = &v->s;
1985 GetBitContext *gb = &s->gb;
1988 int scale, off, idx, last, skip, value;
1989 int ttblk = ttmb & 7;
1993 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)];
1995 if(ttblk == TT_4X4) {
1996 subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
1998 if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) {
1999 subblkpat = decode012(gb);
2000 if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits
2001 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4;
2002 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8;
2004 scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0);
2006 // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
2007 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
2008 subblkpat = 2 - (ttblk == TT_8X4_TOP);
2011 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
2012 subblkpat = 2 - (ttblk == TT_4X8_LEFT);
2021 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2025 idx = wmv1_scantable[0][i++];
2026 block[idx] = value * scale;
2028 block[idx] += (block[idx] < 0) ? -mquant : mquant;
2032 s->dsp.vc1_inv_trans_8x8_dc(dst, linesize, block);
2034 s->dsp.vc1_inv_trans_8x8(block);
2035 s->dsp.add_pixels_clamped(block, dst, linesize);
2037 if(apply_filter && cbp_top & 0xC)
2038 s->dsp.vc1_v_loop_filter8(dst, linesize, v->pq);
2039 if(apply_filter && cbp_left & 0xA)
2040 s->dsp.vc1_h_loop_filter8(dst, linesize, v->pq);
2044 pat = ~subblkpat & 0xF;
2045 for(j = 0; j < 4; j++) {
2046 last = subblkpat & (1 << (3 - j));
2048 off = (j & 1) * 4 + (j & 2) * 16;
2050 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2054 idx = ff_vc1_simple_progressive_4x4_zz[i++];
2055 block[idx + off] = value * scale;
2057 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2059 if(!(subblkpat & (1 << (3 - j))) && !skip_block){
2061 s->dsp.vc1_inv_trans_4x4_dc(dst + (j&1)*4 + (j&2)*2*linesize, linesize, block + off);
2063 s->dsp.vc1_inv_trans_4x4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, block + off);
2064 if(apply_filter && (j&2 ? pat & (1<<(j-2)) : (cbp_top & (1 << (j + 2)))))
2065 s->dsp.vc1_v_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq);
2066 if(apply_filter && (j&1 ? pat & (1<<(j-1)) : (cbp_left & (1 << (j + 1)))))
2067 s->dsp.vc1_h_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq);
2072 pat = ~((subblkpat & 2)*6 + (subblkpat & 1)*3) & 0xF;
2073 for(j = 0; j < 2; j++) {
2074 last = subblkpat & (1 << (1 - j));
2078 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2082 idx = v->zz_8x4[i++]+off;
2083 block[idx] = value * scale;
2085 block[idx] += (block[idx] < 0) ? -mquant : mquant;
2087 if(!(subblkpat & (1 << (1 - j))) && !skip_block){
2089 s->dsp.vc1_inv_trans_8x4_dc(dst + j*4*linesize, linesize, block + off);
2091 s->dsp.vc1_inv_trans_8x4(dst + j*4*linesize, linesize, block + off);
2092 if(apply_filter && j ? pat & 0x3 : (cbp_top & 0xC))
2093 s->dsp.vc1_v_loop_filter8(dst + j*4*linesize, linesize, v->pq);
2094 if(apply_filter && cbp_left & (2 << j))
2095 s->dsp.vc1_h_loop_filter4(dst + j*4*linesize, linesize, v->pq);
2100 pat = ~(subblkpat*5) & 0xF;
2101 for(j = 0; j < 2; j++) {
2102 last = subblkpat & (1 << (1 - j));
2106 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2110 idx = v->zz_4x8[i++]+off;
2111 block[idx] = value * scale;
2113 block[idx] += (block[idx] < 0) ? -mquant : mquant;
2115 if(!(subblkpat & (1 << (1 - j))) && !skip_block){
2117 s->dsp.vc1_inv_trans_4x8_dc(dst + j*4, linesize, block + off);
2119 s->dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
2120 if(apply_filter && cbp_top & (2 << j))
2121 s->dsp.vc1_v_loop_filter4(dst + j*4, linesize, v->pq);
2122 if(apply_filter && j ? pat & 0x5 : (cbp_left & 0xA))
2123 s->dsp.vc1_h_loop_filter8(dst + j*4, linesize, v->pq);
2131 /** @} */ // Macroblock group
2133 static const int size_table [6] = { 0, 2, 3, 4, 5, 8 };
2134 static const int offset_table[6] = { 0, 1, 3, 7, 15, 31 };
2136 /** Decode one P-frame MB (in Simple/Main profile)
2138 static int vc1_decode_p_mb(VC1Context *v)
2140 MpegEncContext *s = &v->s;
2141 GetBitContext *gb = &s->gb;
2143 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2144 int cbp; /* cbp decoding stuff */
2145 int mqdiff, mquant; /* MB quantization */
2146 int ttmb = v->ttfrm; /* MB Transform type */
2148 int mb_has_coeffs = 1; /* last_flag */
2149 int dmv_x, dmv_y; /* Differential MV components */
2150 int index, index1; /* LUT indexes */
2151 int val, sign; /* temp values */
2152 int first_block = 1;
2154 int skipped, fourmv;
2155 int block_cbp = 0, pat;
2156 int apply_loop_filter;
2158 mquant = v->pq; /* Loosy initialization */
2160 if (v->mv_type_is_raw)
2161 fourmv = get_bits1(gb);
2163 fourmv = v->mv_type_mb_plane[mb_pos];
2165 skipped = get_bits1(gb);
2167 skipped = v->s.mbskip_table[mb_pos];
2169 s->dsp.clear_blocks(s->block[0]);
2171 apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY);
2172 if (!fourmv) /* 1MV mode */
2176 GET_MVDATA(dmv_x, dmv_y);
2179 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
2180 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
2182 s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
2183 vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]);
2185 /* FIXME Set DC val for inter block ? */
2186 if (s->mb_intra && !mb_has_coeffs)
2189 s->ac_pred = get_bits1(gb);
2192 else if (mb_has_coeffs)
2194 if (s->mb_intra) s->ac_pred = get_bits1(gb);
2195 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
2203 s->current_picture.qscale_table[mb_pos] = mquant;
2205 if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
2206 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
2207 VC1_TTMB_VLC_BITS, 2);
2208 if(!s->mb_intra) vc1_mc_1mv(v, 0);
2212 s->dc_val[0][s->block_index[i]] = 0;
2214 val = ((cbp >> (5 - i)) & 1);
2215 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
2216 v->mb_type[0][s->block_index[i]] = s->mb_intra;
2218 /* check if prediction blocks A and C are available */
2219 v->a_avail = v->c_avail = 0;
2220 if(i == 2 || i == 3 || !s->first_slice_line)
2221 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
2222 if(i == 1 || i == 3 || s->mb_x)
2223 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
2225 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
2226 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
2227 s->dsp.vc1_inv_trans_8x8(s->block[i]);
2228 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
2229 s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
2230 if(v->pq >= 9 && v->overlap) {
2232 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
2234 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
2236 if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
2237 int left_cbp, top_cbp;
2239 left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
2240 top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
2242 left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
2243 top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
2246 s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2248 s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2250 block_cbp |= 0xF << (i << 2);
2252 int left_cbp = 0, top_cbp = 0, filter = 0;
2253 if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
2256 left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
2257 top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
2259 left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
2260 top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
2263 s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2265 s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2267 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);
2268 block_cbp |= pat << (i << 2);
2269 if(!v->ttmbf && ttmb < 8) ttmb = -1;
2277 for(i = 0; i < 6; i++) {
2278 v->mb_type[0][s->block_index[i]] = 0;
2279 s->dc_val[0][s->block_index[i]] = 0;
2281 s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
2282 s->current_picture.qscale_table[mb_pos] = 0;
2283 vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
2290 if (!skipped /* unskipped MB */)
2292 int intra_count = 0, coded_inter = 0;
2293 int is_intra[6], is_coded[6];
2295 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
2298 val = ((cbp >> (5 - i)) & 1);
2299 s->dc_val[0][s->block_index[i]] = 0;
2306 GET_MVDATA(dmv_x, dmv_y);
2308 vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
2309 if(!s->mb_intra) vc1_mc_4mv_luma(v, i);
2310 intra_count += s->mb_intra;
2311 is_intra[i] = s->mb_intra;
2312 is_coded[i] = mb_has_coeffs;
2315 is_intra[i] = (intra_count >= 3);
2318 if(i == 4) vc1_mc_4mv_chroma(v);
2319 v->mb_type[0][s->block_index[i]] = is_intra[i];
2320 if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i];
2322 // if there are no coded blocks then don't do anything more
2323 if(!intra_count && !coded_inter) return 0;
2326 s->current_picture.qscale_table[mb_pos] = mquant;
2327 /* test if block is intra and has pred */
2332 if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
2333 || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
2338 if(intrapred)s->ac_pred = get_bits1(gb);
2339 else s->ac_pred = 0;
2341 if (!v->ttmbf && coded_inter)
2342 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
2346 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
2347 s->mb_intra = is_intra[i];
2349 /* check if prediction blocks A and C are available */
2350 v->a_avail = v->c_avail = 0;
2351 if(i == 2 || i == 3 || !s->first_slice_line)
2352 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
2353 if(i == 1 || i == 3 || s->mb_x)
2354 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
2356 vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset);
2357 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
2358 s->dsp.vc1_inv_trans_8x8(s->block[i]);
2359 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
2360 s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
2361 if(v->pq >= 9 && v->overlap) {
2363 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
2365 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
2367 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)){
2368 int left_cbp, top_cbp;
2370 left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
2371 top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
2373 left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
2374 top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
2377 s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2379 s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2381 block_cbp |= 0xF << (i << 2);
2382 } else if(is_coded[i]) {
2383 int left_cbp = 0, top_cbp = 0, filter = 0;
2384 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)){
2387 left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
2388 top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
2390 left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
2391 top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
2394 s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2396 s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
2398 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);
2399 block_cbp |= pat << (i << 2);
2400 if(!v->ttmbf && ttmb < 8) ttmb = -1;
2409 s->current_picture.qscale_table[mb_pos] = 0;
2410 for (i=0; i<6; i++) {
2411 v->mb_type[0][s->block_index[i]] = 0;
2412 s->dc_val[0][s->block_index[i]] = 0;
2416 vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]);
2417 vc1_mc_4mv_luma(v, i);
2419 vc1_mc_4mv_chroma(v);
2420 s->current_picture.qscale_table[mb_pos] = 0;
2424 v->cbp[s->mb_x] = block_cbp;
2426 /* Should never happen */
2430 /** Decode one B-frame MB (in Main profile)
2432 static void vc1_decode_b_mb(VC1Context *v)
2434 MpegEncContext *s = &v->s;
2435 GetBitContext *gb = &s->gb;
2437 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2438 int cbp = 0; /* cbp decoding stuff */
2439 int mqdiff, mquant; /* MB quantization */
2440 int ttmb = v->ttfrm; /* MB Transform type */
2441 int mb_has_coeffs = 0; /* last_flag */
2442 int index, index1; /* LUT indexes */
2443 int val, sign; /* temp values */
2444 int first_block = 1;
2446 int skipped, direct;
2447 int dmv_x[2], dmv_y[2];
2448 int bmvtype = BMV_TYPE_BACKWARD;
2450 mquant = v->pq; /* Loosy initialization */
2454 direct = get_bits1(gb);
2456 direct = v->direct_mb_plane[mb_pos];
2458 skipped = get_bits1(gb);
2460 skipped = v->s.mbskip_table[mb_pos];
2462 s->dsp.clear_blocks(s->block[0]);
2463 dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
2464 for(i = 0; i < 6; i++) {
2465 v->mb_type[0][s->block_index[i]] = 0;
2466 s->dc_val[0][s->block_index[i]] = 0;
2468 s->current_picture.qscale_table[mb_pos] = 0;
2472 GET_MVDATA(dmv_x[0], dmv_y[0]);
2473 dmv_x[1] = dmv_x[0];
2474 dmv_y[1] = dmv_y[0];
2476 if(skipped || !s->mb_intra) {
2477 bmvtype = decode012(gb);
2480 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
2483 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
2486 bmvtype = BMV_TYPE_INTERPOLATED;
2487 dmv_x[0] = dmv_y[0] = 0;
2491 for(i = 0; i < 6; i++)
2492 v->mb_type[0][s->block_index[i]] = s->mb_intra;
2495 if(direct) bmvtype = BMV_TYPE_INTERPOLATED;
2496 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
2497 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
2501 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
2504 s->current_picture.qscale_table[mb_pos] = mquant;
2506 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
2507 dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
2508 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
2509 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
2511 if(!mb_has_coeffs && !s->mb_intra) {
2512 /* no coded blocks - effectively skipped */
2513 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
2514 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
2517 if(s->mb_intra && !mb_has_coeffs) {
2519 s->current_picture.qscale_table[mb_pos] = mquant;
2520 s->ac_pred = get_bits1(gb);
2522 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
2524 if(bmvtype == BMV_TYPE_INTERPOLATED) {
2525 GET_MVDATA(dmv_x[0], dmv_y[0]);
2526 if(!mb_has_coeffs) {
2527 /* interpolated skipped block */
2528 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
2529 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
2533 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
2535 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
2538 s->ac_pred = get_bits1(gb);
2539 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
2541 s->current_picture.qscale_table[mb_pos] = mquant;
2542 if(!v->ttmbf && !s->mb_intra && mb_has_coeffs)
2543 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
2549 s->dc_val[0][s->block_index[i]] = 0;
2551 val = ((cbp >> (5 - i)) & 1);
2552 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
2553 v->mb_type[0][s->block_index[i]] = s->mb_intra;
2555 /* check if prediction blocks A and C are available */
2556 v->a_avail = v->c_avail = 0;
2557 if(i == 2 || i == 3 || !s->first_slice_line)
2558 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
2559 if(i == 1 || i == 3 || s->mb_x)
2560 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
2562 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
2563 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
2564 s->dsp.vc1_inv_trans_8x8(s->block[i]);
2565 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
2566 s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
2568 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);
2569 if(!v->ttmbf && ttmb < 8) ttmb = -1;
2575 /** Decode blocks of I-frame
2577 static void vc1_decode_i_blocks(VC1Context *v)
2580 MpegEncContext *s = &v->s;
2585 /* select codingmode used for VLC tables selection */
2586 switch(v->y_ac_table_index){
2588 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2591 v->codingset = CS_HIGH_MOT_INTRA;
2594 v->codingset = CS_MID_RATE_INTRA;
2598 switch(v->c_ac_table_index){
2600 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2603 v->codingset2 = CS_HIGH_MOT_INTER;
2606 v->codingset2 = CS_MID_RATE_INTER;
2610 /* Set DC scale - y and c use the same */
2611 s->y_dc_scale = s->y_dc_scale_table[v->pq];
2612 s->c_dc_scale = s->c_dc_scale_table[v->pq];
2615 s->mb_x = s->mb_y = 0;
2617 s->first_slice_line = 1;
2618 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
2619 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
2620 ff_init_block_index(s);
2621 ff_update_block_index(s);
2622 s->dsp.clear_blocks(s->block[0]);
2623 mb_pos = s->mb_x + s->mb_y * s->mb_width;
2624 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
2625 s->current_picture.qscale_table[mb_pos] = v->pq;
2626 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
2627 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
2629 // do actual MB decoding and displaying
2630 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
2631 v->s.ac_pred = get_bits1(&v->s.gb);
2633 for(k = 0; k < 6; k++) {
2634 val = ((cbp >> (5 - k)) & 1);
2637 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
2641 cbp |= val << (5 - k);
2643 vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
2645 s->dsp.vc1_inv_trans_8x8(s->block[k]);
2646 if(v->pq >= 9 && v->overlap) {
2647 for(j = 0; j < 64; j++) s->block[k][j] += 128;
2651 vc1_put_block(v, s->block);
2652 if(v->pq >= 9 && v->overlap) {
2654 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
2655 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
2656 if(!(s->flags & CODEC_FLAG_GRAY)) {
2657 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
2658 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
2661 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
2662 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
2663 if(!s->first_slice_line) {
2664 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
2665 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
2666 if(!(s->flags & CODEC_FLAG_GRAY)) {
2667 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
2668 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
2671 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
2672 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
2674 if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq);
2676 if(get_bits_count(&s->gb) > v->bits) {
2677 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
2678 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
2682 ff_draw_horiz_band(s, s->mb_y * 16, 16);
2683 s->first_slice_line = 0;
2685 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
2688 /** Decode blocks of I-frame for advanced profile
2690 static void vc1_decode_i_blocks_adv(VC1Context *v)
2693 MpegEncContext *s = &v->s;
2700 GetBitContext *gb = &s->gb;
2702 /* select codingmode used for VLC tables selection */
2703 switch(v->y_ac_table_index){
2705 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2708 v->codingset = CS_HIGH_MOT_INTRA;
2711 v->codingset = CS_MID_RATE_INTRA;
2715 switch(v->c_ac_table_index){
2717 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2720 v->codingset2 = CS_HIGH_MOT_INTER;
2723 v->codingset2 = CS_MID_RATE_INTER;
2728 s->mb_x = s->mb_y = 0;
2730 s->first_slice_line = 1;
2731 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
2732 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
2733 ff_init_block_index(s);
2734 ff_update_block_index(s);
2735 s->dsp.clear_blocks(s->block[0]);
2736 mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2737 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
2738 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
2739 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
2741 // do actual MB decoding and displaying
2742 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
2743 if(v->acpred_is_raw)
2744 v->s.ac_pred = get_bits1(&v->s.gb);
2746 v->s.ac_pred = v->acpred_plane[mb_pos];
2748 if(v->condover == CONDOVER_SELECT) {
2749 if(v->overflg_is_raw)
2750 overlap = get_bits1(&v->s.gb);
2752 overlap = v->over_flags_plane[mb_pos];
2754 overlap = (v->condover == CONDOVER_ALL);
2758 s->current_picture.qscale_table[mb_pos] = mquant;
2759 /* Set DC scale - y and c use the same */
2760 s->y_dc_scale = s->y_dc_scale_table[mquant];
2761 s->c_dc_scale = s->c_dc_scale_table[mquant];
2763 for(k = 0; k < 6; k++) {
2764 val = ((cbp >> (5 - k)) & 1);
2767 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
2771 cbp |= val << (5 - k);
2773 v->a_avail = !s->first_slice_line || (k==2 || k==3);
2774 v->c_avail = !!s->mb_x || (k==1 || k==3);
2776 vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant);
2778 s->dsp.vc1_inv_trans_8x8(s->block[k]);
2779 for(j = 0; j < 64; j++) s->block[k][j] += 128;
2782 vc1_put_block(v, s->block);
2785 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
2786 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
2787 if(!(s->flags & CODEC_FLAG_GRAY)) {
2788 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
2789 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
2792 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
2793 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
2794 if(!s->first_slice_line) {
2795 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
2796 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
2797 if(!(s->flags & CODEC_FLAG_GRAY)) {
2798 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
2799 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
2802 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
2803 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
2805 if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq);
2807 if(get_bits_count(&s->gb) > v->bits) {
2808 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
2809 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
2813 ff_draw_horiz_band(s, s->mb_y * 16, 16);
2814 s->first_slice_line = 0;
2816 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
2819 static void vc1_decode_p_blocks(VC1Context *v)
2821 MpegEncContext *s = &v->s;
2823 /* select codingmode used for VLC tables selection */
2824 switch(v->c_ac_table_index){
2826 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2829 v->codingset = CS_HIGH_MOT_INTRA;
2832 v->codingset = CS_MID_RATE_INTRA;
2836 switch(v->c_ac_table_index){
2838 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2841 v->codingset2 = CS_HIGH_MOT_INTER;
2844 v->codingset2 = CS_MID_RATE_INTER;
2848 s->first_slice_line = 1;
2849 memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride);
2850 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
2851 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
2852 ff_init_block_index(s);
2853 ff_update_block_index(s);
2854 s->dsp.clear_blocks(s->block[0]);
2857 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
2858 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
2859 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);
2863 memmove(v->cbp_base, v->cbp, sizeof(v->cbp_base[0])*s->mb_stride);
2864 ff_draw_horiz_band(s, s->mb_y * 16, 16);
2865 s->first_slice_line = 0;
2867 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
2870 static void vc1_decode_b_blocks(VC1Context *v)
2872 MpegEncContext *s = &v->s;
2874 /* select codingmode used for VLC tables selection */
2875 switch(v->c_ac_table_index){
2877 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2880 v->codingset = CS_HIGH_MOT_INTRA;
2883 v->codingset = CS_MID_RATE_INTRA;
2887 switch(v->c_ac_table_index){
2889 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2892 v->codingset2 = CS_HIGH_MOT_INTER;
2895 v->codingset2 = CS_MID_RATE_INTER;
2899 s->first_slice_line = 1;
2900 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
2901 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
2902 ff_init_block_index(s);
2903 ff_update_block_index(s);
2904 s->dsp.clear_blocks(s->block[0]);
2907 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
2908 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
2909 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);
2912 if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq);
2914 ff_draw_horiz_band(s, s->mb_y * 16, 16);
2915 s->first_slice_line = 0;
2917 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
2920 static void vc1_decode_skip_blocks(VC1Context *v)
2922 MpegEncContext *s = &v->s;
2924 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
2925 s->first_slice_line = 1;
2926 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
2928 ff_init_block_index(s);
2929 ff_update_block_index(s);
2930 memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
2931 memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
2932 memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
2933 ff_draw_horiz_band(s, s->mb_y * 16, 16);
2934 s->first_slice_line = 0;
2936 s->pict_type = FF_P_TYPE;
2939 static void vc1_decode_blocks(VC1Context *v)
2942 v->s.esc3_level_length = 0;
2944 ff_intrax8_decode_picture(&v->x8, 2*v->pq+v->halfpq, v->pq*(!v->pquantizer) );
2947 switch(v->s.pict_type) {
2949 if(v->profile == PROFILE_ADVANCED)
2950 vc1_decode_i_blocks_adv(v);
2952 vc1_decode_i_blocks(v);
2955 if(v->p_frame_skipped)
2956 vc1_decode_skip_blocks(v);
2958 vc1_decode_p_blocks(v);
2962 if(v->profile == PROFILE_ADVANCED)
2963 vc1_decode_i_blocks_adv(v);
2965 vc1_decode_i_blocks(v);
2967 vc1_decode_b_blocks(v);
2973 /** Initialize a VC1/WMV3 decoder
2974 * @todo TODO: Handle VC-1 IDUs (Transport level?)
2975 * @todo TODO: Decypher remaining bits in extra_data
2977 static av_cold int vc1_decode_init(AVCodecContext *avctx)
2979 VC1Context *v = avctx->priv_data;
2980 MpegEncContext *s = &v->s;
2983 if (!avctx->extradata_size || !avctx->extradata) return -1;
2984 if (!(avctx->flags & CODEC_FLAG_GRAY))
2985 avctx->pix_fmt = avctx->get_format(avctx, avctx->codec->pix_fmts);
2987 avctx->pix_fmt = PIX_FMT_GRAY8;
2988 avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
2990 avctx->flags |= CODEC_FLAG_EMU_EDGE;
2991 v->s.flags |= CODEC_FLAG_EMU_EDGE;
2993 if(avctx->idct_algo==FF_IDCT_AUTO){
2994 avctx->idct_algo=FF_IDCT_WMV2;
2997 if(ff_h263_decode_init(avctx) < 0)
2999 if (vc1_init_common(v) < 0) return -1;
3001 avctx->coded_width = avctx->width;
3002 avctx->coded_height = avctx->height;
3003 if (avctx->codec_id == CODEC_ID_WMV3)
3007 // looks like WMV3 has a sequence header stored in the extradata
3008 // advanced sequence header may be before the first frame
3009 // the last byte of the extradata is a version number, 1 for the
3010 // samples we can decode
3012 init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
3014 if (vc1_decode_sequence_header(avctx, v, &gb) < 0)
3017 count = avctx->extradata_size*8 - get_bits_count(&gb);
3020 av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
3021 count, get_bits(&gb, count));
3025 av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
3027 } else { // VC1/WVC1
3028 const uint8_t *start = avctx->extradata;
3029 uint8_t *end = avctx->extradata + avctx->extradata_size;
3030 const uint8_t *next;
3031 int size, buf2_size;
3032 uint8_t *buf2 = NULL;
3033 int seq_initialized = 0, ep_initialized = 0;
3035 if(avctx->extradata_size < 16) {
3036 av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
3040 buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
3041 if(start[0]) start++; // in WVC1 extradata first byte is its size
3043 for(; next < end; start = next){
3044 next = find_next_marker(start + 4, end);
3045 size = next - start - 4;
3046 if(size <= 0) continue;
3047 buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
3048 init_get_bits(&gb, buf2, buf2_size * 8);
3049 switch(AV_RB32(start)){
3050 case VC1_CODE_SEQHDR:
3051 if(vc1_decode_sequence_header(avctx, v, &gb) < 0){
3055 seq_initialized = 1;
3057 case VC1_CODE_ENTRYPOINT:
3058 if(vc1_decode_entry_point(avctx, v, &gb) < 0){
3067 if(!seq_initialized || !ep_initialized){
3068 av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
3072 avctx->has_b_frames= !!(avctx->max_b_frames);
3073 s->low_delay = !avctx->has_b_frames;
3075 s->mb_width = (avctx->coded_width+15)>>4;
3076 s->mb_height = (avctx->coded_height+15)>>4;
3078 /* Allocate mb bitplanes */
3079 v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3080 v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3081 v->acpred_plane = av_malloc(s->mb_stride * s->mb_height);
3082 v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height);
3084 v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
3085 v->cbp = v->cbp_base + s->mb_stride;
3087 /* allocate block type info in that way so it could be used with s->block_index[] */
3088 v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
3089 v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
3090 v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1;
3091 v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1);
3093 /* Init coded blocks info */
3094 if (v->profile == PROFILE_ADVANCED)
3096 // if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
3098 // if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
3102 ff_intrax8_common_init(&v->x8,s);
3107 /** Decode a VC1/WMV3 frame
3108 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3110 static int vc1_decode_frame(AVCodecContext *avctx,
3111 void *data, int *data_size,
3114 const uint8_t *buf = avpkt->data;
3115 int buf_size = avpkt->size;
3116 VC1Context *v = avctx->priv_data;
3117 MpegEncContext *s = &v->s;
3118 AVFrame *pict = data;
3119 uint8_t *buf2 = NULL;
3120 const uint8_t *buf_start = buf;
3122 /* no supplementary picture */
3123 if (buf_size == 0) {
3124 /* special case for last picture */
3125 if (s->low_delay==0 && s->next_picture_ptr) {
3126 *pict= *(AVFrame*)s->next_picture_ptr;
3127 s->next_picture_ptr= NULL;
3129 *data_size = sizeof(AVFrame);
3135 /* We need to set current_picture_ptr before reading the header,
3136 * otherwise we cannot store anything in there. */
3137 if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
3138 int i= ff_find_unused_picture(s, 0);
3139 s->current_picture_ptr= &s->picture[i];
3142 if (s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
3143 if (v->profile < PROFILE_ADVANCED)
3144 avctx->pix_fmt = PIX_FMT_VDPAU_WMV3;
3146 avctx->pix_fmt = PIX_FMT_VDPAU_VC1;
3149 //for advanced profile we may need to parse and unescape data
3150 if (avctx->codec_id == CODEC_ID_VC1) {
3152 buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
3154 if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
3155 const uint8_t *start, *end, *next;
3159 for(start = buf, end = buf + buf_size; next < end; start = next){
3160 next = find_next_marker(start + 4, end);
3161 size = next - start - 4;
3162 if(size <= 0) continue;
3163 switch(AV_RB32(start)){
3164 case VC1_CODE_FRAME:
3165 if (avctx->hwaccel ||
3166 s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
3168 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
3170 case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
3171 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
3172 init_get_bits(&s->gb, buf2, buf_size2*8);
3173 vc1_decode_entry_point(avctx, v, &s->gb);
3175 case VC1_CODE_SLICE:
3176 av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n");
3181 }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
3182 const uint8_t *divider;
3184 divider = find_next_marker(buf, buf + buf_size);
3185 if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
3186 av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
3191 buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
3193 av_free(buf2);return -1;
3195 buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
3197 init_get_bits(&s->gb, buf2, buf_size2*8);
3199 init_get_bits(&s->gb, buf, buf_size*8);
3200 // do parse frame header
3201 if(v->profile < PROFILE_ADVANCED) {
3202 if(vc1_parse_frame_header(v, &s->gb) == -1) {
3207 if(vc1_parse_frame_header_adv(v, &s->gb) == -1) {
3213 if(s->pict_type != FF_I_TYPE && !v->res_rtm_flag){
3219 s->current_picture.pict_type= s->pict_type;
3220 s->current_picture.key_frame= s->pict_type == FF_I_TYPE;
3222 /* skip B-frames if we don't have reference frames */
3223 if(s->last_picture_ptr==NULL && (s->pict_type==FF_B_TYPE || s->dropable)){
3225 return -1;//buf_size;
3227 /* skip b frames if we are in a hurry */
3228 if(avctx->hurry_up && s->pict_type==FF_B_TYPE) return -1;//buf_size;
3229 if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE)
3230 || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE)
3231 || avctx->skip_frame >= AVDISCARD_ALL) {
3235 /* skip everything if we are in a hurry>=5 */
3236 if(avctx->hurry_up>=5) {
3238 return -1;//buf_size;
3241 if(s->next_p_frame_damaged){
3242 if(s->pict_type==FF_B_TYPE)
3245 s->next_p_frame_damaged=0;
3248 if(MPV_frame_start(s, avctx) < 0) {
3253 s->me.qpel_put= s->dsp.put_qpel_pixels_tab;
3254 s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
3256 if ((CONFIG_VC1_VDPAU_DECODER || CONFIG_WMV3_VDPAU_DECODER)
3257 &&s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
3258 ff_vdpau_vc1_decode_picture(s, buf_start, (buf + buf_size) - buf_start);
3259 else if (avctx->hwaccel) {
3260 if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0)
3262 if (avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start) < 0)
3264 if (avctx->hwaccel->end_frame(avctx) < 0)
3267 ff_er_frame_start(s);
3269 v->bits = buf_size * 8;
3270 vc1_decode_blocks(v);
3271 //av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8);
3272 // if(get_bits_count(&s->gb) > buf_size * 8)
3279 assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
3280 assert(s->current_picture.pict_type == s->pict_type);
3281 if (s->pict_type == FF_B_TYPE || s->low_delay) {
3282 *pict= *(AVFrame*)s->current_picture_ptr;
3283 } else if (s->last_picture_ptr != NULL) {
3284 *pict= *(AVFrame*)s->last_picture_ptr;
3287 if(s->last_picture_ptr || s->low_delay){
3288 *data_size = sizeof(AVFrame);
3289 ff_print_debug_info(s, pict);
3297 /** Close a VC1/WMV3 decoder
3298 * @warning Initial try at using MpegEncContext stuff
3300 static av_cold int vc1_decode_end(AVCodecContext *avctx)
3302 VC1Context *v = avctx->priv_data;
3304 av_freep(&v->hrd_rate);
3305 av_freep(&v->hrd_buffer);
3306 MPV_common_end(&v->s);
3307 av_freep(&v->mv_type_mb_plane);
3308 av_freep(&v->direct_mb_plane);
3309 av_freep(&v->acpred_plane);
3310 av_freep(&v->over_flags_plane);
3311 av_freep(&v->mb_type_base);
3312 av_freep(&v->cbp_base);
3313 ff_intrax8_common_end(&v->x8);
3318 AVCodec vc1_decoder = {
3327 CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3329 .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
3330 .pix_fmts = ff_hwaccel_pixfmt_list_420
3333 AVCodec wmv3_decoder = {
3342 CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3344 .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"),
3345 .pix_fmts = ff_hwaccel_pixfmt_list_420
3348 #if CONFIG_WMV3_VDPAU_DECODER
3349 AVCodec wmv3_vdpau_decoder = {
3358 CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3360 .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 VDPAU"),
3361 .pix_fmts = (enum PixelFormat[]){PIX_FMT_VDPAU_WMV3, PIX_FMT_NONE}
3365 #if CONFIG_VC1_VDPAU_DECODER
3366 AVCodec vc1_vdpau_decoder = {
3375 CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3377 .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 VDPAU"),
3378 .pix_fmts = (enum PixelFormat[]){PIX_FMT_VDPAU_VC1, PIX_FMT_NONE}