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
30 #include "mpegvideo.h"
33 #include "vc1acdata.h"
34 #include "msmpeg4data.h"
40 #define MB_INTRA_VLC_BITS 9
43 static const uint16_t table_mb_intra[64][2];
46 static inline int decode210(GetBitContext *gb){
50 return 2 - get_bits1(gb);
54 * Init VC-1 specific tables and VC1Context members
55 * @param v The VC1Context to initialize
58 static int vc1_init_common(VC1Context *v)
63 v->hrd_rate = v->hrd_buffer = NULL;
69 init_vlc(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
70 ff_vc1_bfraction_bits, 1, 1,
71 ff_vc1_bfraction_codes, 1, 1, 1);
72 init_vlc(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
73 ff_vc1_norm2_bits, 1, 1,
74 ff_vc1_norm2_codes, 1, 1, 1);
75 init_vlc(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
76 ff_vc1_norm6_bits, 1, 1,
77 ff_vc1_norm6_codes, 2, 2, 1);
78 init_vlc(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
79 ff_vc1_imode_bits, 1, 1,
80 ff_vc1_imode_codes, 1, 1, 1);
83 init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
84 ff_vc1_ttmb_bits[i], 1, 1,
85 ff_vc1_ttmb_codes[i], 2, 2, 1);
86 init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
87 ff_vc1_ttblk_bits[i], 1, 1,
88 ff_vc1_ttblk_codes[i], 1, 1, 1);
89 init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
90 ff_vc1_subblkpat_bits[i], 1, 1,
91 ff_vc1_subblkpat_codes[i], 1, 1, 1);
95 init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
96 ff_vc1_4mv_block_pattern_bits[i], 1, 1,
97 ff_vc1_4mv_block_pattern_codes[i], 1, 1, 1);
98 init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
99 ff_vc1_cbpcy_p_bits[i], 1, 1,
100 ff_vc1_cbpcy_p_codes[i], 2, 2, 1);
101 init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
102 ff_vc1_mv_diff_bits[i], 1, 1,
103 ff_vc1_mv_diff_codes[i], 2, 2, 1);
106 init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i],
107 &vc1_ac_tables[i][0][1], 8, 4,
108 &vc1_ac_tables[i][0][0], 8, 4, 1);
109 init_vlc(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64,
110 &ff_msmp4_mb_i_table[0][1], 4, 2,
111 &ff_msmp4_mb_i_table[0][0], 4, 2, 1);
116 v->mvrange = 0; /* 7.1.1.18, p80 */
121 /***********************************************************************/
123 * @defgroup bitplane VC9 Bitplane decoding
128 /** @addtogroup bitplane
141 /** @} */ //imode defines
143 /** Decode rows by checking if they are skipped
144 * @param plane Buffer to store decoded bits
145 * @param[in] width Width of this buffer
146 * @param[in] height Height of this buffer
147 * @param[in] stride of this buffer
149 static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
152 for (y=0; y<height; y++){
153 if (!get_bits1(gb)) //rowskip
154 memset(plane, 0, width);
156 for (x=0; x<width; x++)
157 plane[x] = get_bits1(gb);
162 /** Decode columns by checking if they are skipped
163 * @param plane Buffer to store decoded bits
164 * @param[in] width Width of this buffer
165 * @param[in] height Height of this buffer
166 * @param[in] stride of this buffer
167 * @todo FIXME: Optimize
169 static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
172 for (x=0; x<width; x++){
173 if (!get_bits1(gb)) //colskip
174 for (y=0; y<height; y++)
177 for (y=0; y<height; y++)
178 plane[y*stride] = get_bits1(gb);
183 /** Decode a bitplane's bits
184 * @param bp Bitplane where to store the decode bits
185 * @param v VC-1 context for bit reading and logging
187 * @todo FIXME: Optimize
189 static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
191 GetBitContext *gb = &v->s.gb;
193 int imode, x, y, code, offset;
194 uint8_t invert, *planep = data;
195 int width, height, stride;
197 width = v->s.mb_width;
198 height = v->s.mb_height;
199 stride = v->s.mb_stride;
200 invert = get_bits1(gb);
201 imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);
207 //Data is actually read in the MB layer (same for all tests == "raw")
208 *raw_flag = 1; //invert ignored
212 if ((height * width) & 1)
214 *planep++ = get_bits1(gb);
218 // decode bitplane as one long line
219 for (y = offset; y < height * width; y += 2) {
220 code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);
221 *planep++ = code & 1;
223 if(offset == width) {
225 planep += stride - width;
227 *planep++ = code >> 1;
229 if(offset == width) {
231 planep += stride - width;
237 if(!(height % 3) && (width % 3)) { // use 2x3 decoding
238 for(y = 0; y < height; y+= 3) {
239 for(x = width & 1; x < width; x += 2) {
240 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
242 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
245 planep[x + 0] = (code >> 0) & 1;
246 planep[x + 1] = (code >> 1) & 1;
247 planep[x + 0 + stride] = (code >> 2) & 1;
248 planep[x + 1 + stride] = (code >> 3) & 1;
249 planep[x + 0 + stride * 2] = (code >> 4) & 1;
250 planep[x + 1 + stride * 2] = (code >> 5) & 1;
252 planep += stride * 3;
254 if(width & 1) decode_colskip(data, 1, height, stride, &v->s.gb);
256 planep += (height & 1) * stride;
257 for(y = height & 1; y < height; y += 2) {
258 for(x = width % 3; x < width; x += 3) {
259 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
261 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
264 planep[x + 0] = (code >> 0) & 1;
265 planep[x + 1] = (code >> 1) & 1;
266 planep[x + 2] = (code >> 2) & 1;
267 planep[x + 0 + stride] = (code >> 3) & 1;
268 planep[x + 1 + stride] = (code >> 4) & 1;
269 planep[x + 2 + stride] = (code >> 5) & 1;
271 planep += stride * 2;
274 if(x) decode_colskip(data , x, height , stride, &v->s.gb);
275 if(height & 1) decode_rowskip(data+x, width - x, 1, stride, &v->s.gb);
279 decode_rowskip(data, width, height, stride, &v->s.gb);
282 decode_colskip(data, width, height, stride, &v->s.gb);
287 /* Applying diff operator */
288 if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6)
292 for (x=1; x<width; x++)
293 planep[x] ^= planep[x-1];
294 for (y=1; y<height; y++)
297 planep[0] ^= planep[-stride];
298 for (x=1; x<width; x++)
300 if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
301 else planep[x] ^= planep[x-1];
308 for (x=0; x<stride*height; x++) planep[x] = !planep[x]; //FIXME stride
310 return (imode<<1) + invert;
313 /** @} */ //Bitplane group
315 /***********************************************************************/
316 /** VOP Dquant decoding
317 * @param v VC-1 Context
319 static int vop_dquant_decoding(VC1Context *v)
321 GetBitContext *gb = &v->s.gb;
327 pqdiff = get_bits(gb, 3);
328 if (pqdiff == 7) v->altpq = get_bits(gb, 5);
329 else v->altpq = v->pq + pqdiff + 1;
333 v->dquantfrm = get_bits1(gb);
336 v->dqprofile = get_bits(gb, 2);
337 switch (v->dqprofile)
339 case DQPROFILE_SINGLE_EDGE:
340 case DQPROFILE_DOUBLE_EDGES:
341 v->dqsbedge = get_bits(gb, 2);
343 case DQPROFILE_ALL_MBS:
344 v->dqbilevel = get_bits1(gb);
345 default: break; //Forbidden ?
347 if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS)
349 pqdiff = get_bits(gb, 3);
350 if (pqdiff == 7) v->altpq = get_bits(gb, 5);
351 else v->altpq = v->pq + pqdiff + 1;
358 /** Put block onto picture
360 static void vc1_put_block(VC1Context *v, DCTELEM block[6][64])
364 DSPContext *dsp = &v->s.dsp;
368 for(k = 0; k < 6; k++)
369 for(j = 0; j < 8; j++)
370 for(i = 0; i < 8; i++)
371 block[k][i + j*8] = ((block[k][i + j*8] - 128) << 1) + 128;
374 ys = v->s.current_picture.linesize[0];
375 us = v->s.current_picture.linesize[1];
376 vs = v->s.current_picture.linesize[2];
379 dsp->put_pixels_clamped(block[0], Y, ys);
380 dsp->put_pixels_clamped(block[1], Y + 8, ys);
382 dsp->put_pixels_clamped(block[2], Y, ys);
383 dsp->put_pixels_clamped(block[3], Y + 8, ys);
385 if(!(v->s.flags & CODEC_FLAG_GRAY)) {
386 dsp->put_pixels_clamped(block[4], v->s.dest[1], us);
387 dsp->put_pixels_clamped(block[5], v->s.dest[2], vs);
391 /** Do motion compensation over 1 macroblock
392 * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
394 static void vc1_mc_1mv(VC1Context *v, int dir)
396 MpegEncContext *s = &v->s;
397 DSPContext *dsp = &v->s.dsp;
398 uint8_t *srcY, *srcU, *srcV;
399 int dxy, uvdxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
401 if(!v->s.last_picture.data[0])return;
403 mx = s->mv[dir][0][0];
404 my = s->mv[dir][0][1];
406 // store motion vectors for further use in B frames
407 if(s->pict_type == P_TYPE) {
408 s->current_picture.motion_val[1][s->block_index[0]][0] = mx;
409 s->current_picture.motion_val[1][s->block_index[0]][1] = my;
411 uvmx = (mx + ((mx & 3) == 3)) >> 1;
412 uvmy = (my + ((my & 3) == 3)) >> 1;
414 uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
415 uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
418 srcY = s->last_picture.data[0];
419 srcU = s->last_picture.data[1];
420 srcV = s->last_picture.data[2];
422 srcY = s->next_picture.data[0];
423 srcU = s->next_picture.data[1];
424 srcV = s->next_picture.data[2];
427 src_x = s->mb_x * 16 + (mx >> 2);
428 src_y = s->mb_y * 16 + (my >> 2);
429 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
430 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
432 if(v->profile != PROFILE_ADVANCED){
433 src_x = av_clip( src_x, -16, s->mb_width * 16);
434 src_y = av_clip( src_y, -16, s->mb_height * 16);
435 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
436 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
438 src_x = av_clip( src_x, -17, s->avctx->coded_width);
439 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
440 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
441 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
444 srcY += src_y * s->linesize + src_x;
445 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
446 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
448 /* for grayscale we should not try to read from unknown area */
449 if(s->flags & CODEC_FLAG_GRAY) {
450 srcU = s->edge_emu_buffer + 18 * s->linesize;
451 srcV = s->edge_emu_buffer + 18 * s->linesize;
454 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
455 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
456 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
457 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
459 srcY -= s->mspel * (1 + s->linesize);
460 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
461 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
462 srcY = s->edge_emu_buffer;
463 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
464 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
465 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
466 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
469 /* if we deal with range reduction we need to scale source blocks */
475 for(j = 0; j < 17 + s->mspel*2; j++) {
476 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
479 src = srcU; src2 = srcV;
480 for(j = 0; j < 9; j++) {
481 for(i = 0; i < 9; i++) {
482 src[i] = ((src[i] - 128) >> 1) + 128;
483 src2[i] = ((src2[i] - 128) >> 1) + 128;
485 src += s->uvlinesize;
486 src2 += s->uvlinesize;
489 /* if we deal with intensity compensation we need to scale source blocks */
490 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
495 for(j = 0; j < 17 + s->mspel*2; j++) {
496 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = v->luty[src[i]];
499 src = srcU; src2 = srcV;
500 for(j = 0; j < 9; j++) {
501 for(i = 0; i < 9; i++) {
502 src[i] = v->lutuv[src[i]];
503 src2[i] = v->lutuv[src2[i]];
505 src += s->uvlinesize;
506 src2 += s->uvlinesize;
509 srcY += s->mspel * (1 + s->linesize);
513 dxy = ((my & 3) << 2) | (mx & 3);
514 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
515 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
516 srcY += s->linesize * 8;
517 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd);
518 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
519 } else { // hpel mc - always used for luma
520 dxy = (my & 2) | ((mx & 2) >> 1);
523 dsp->put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
525 dsp->put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
528 if(s->flags & CODEC_FLAG_GRAY) return;
529 /* Chroma MC always uses qpel bilinear */
530 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
534 dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
535 dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
537 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
538 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
542 /** Do motion compensation for 4-MV macroblock - luminance block
544 static void vc1_mc_4mv_luma(VC1Context *v, int n)
546 MpegEncContext *s = &v->s;
547 DSPContext *dsp = &v->s.dsp;
549 int dxy, mx, my, src_x, src_y;
552 if(!v->s.last_picture.data[0])return;
555 srcY = s->last_picture.data[0];
557 off = s->linesize * 4 * (n&2) + (n&1) * 8;
559 src_x = s->mb_x * 16 + (n&1) * 8 + (mx >> 2);
560 src_y = s->mb_y * 16 + (n&2) * 4 + (my >> 2);
562 if(v->profile != PROFILE_ADVANCED){
563 src_x = av_clip( src_x, -16, s->mb_width * 16);
564 src_y = av_clip( src_y, -16, s->mb_height * 16);
566 src_x = av_clip( src_x, -17, s->avctx->coded_width);
567 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
570 srcY += src_y * s->linesize + src_x;
572 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
573 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 8 - s->mspel*2
574 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 8 - s->mspel*2){
575 srcY -= s->mspel * (1 + s->linesize);
576 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 9+s->mspel*2, 9+s->mspel*2,
577 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
578 srcY = s->edge_emu_buffer;
579 /* if we deal with range reduction we need to scale source blocks */
585 for(j = 0; j < 9 + s->mspel*2; j++) {
586 for(i = 0; i < 9 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
590 /* if we deal with intensity compensation we need to scale source blocks */
591 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
596 for(j = 0; j < 9 + s->mspel*2; j++) {
597 for(i = 0; i < 9 + s->mspel*2; i++) src[i] = v->luty[src[i]];
601 srcY += s->mspel * (1 + s->linesize);
605 dxy = ((my & 3) << 2) | (mx & 3);
606 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, v->rnd);
607 } else { // hpel mc - always used for luma
608 dxy = (my & 2) | ((mx & 2) >> 1);
610 dsp->put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
612 dsp->put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
616 static inline int median4(int a, int b, int c, int d)
619 if(c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2;
620 else return (FFMIN(b, c) + FFMAX(a, d)) / 2;
622 if(c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2;
623 else return (FFMIN(a, c) + FFMAX(b, d)) / 2;
628 /** Do motion compensation for 4-MV macroblock - both chroma blocks
630 static void vc1_mc_4mv_chroma(VC1Context *v)
632 MpegEncContext *s = &v->s;
633 DSPContext *dsp = &v->s.dsp;
634 uint8_t *srcU, *srcV;
635 int uvdxy, uvmx, uvmy, uvsrc_x, uvsrc_y;
636 int i, idx, tx = 0, ty = 0;
637 int mvx[4], mvy[4], intra[4];
638 static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
640 if(!v->s.last_picture.data[0])return;
641 if(s->flags & CODEC_FLAG_GRAY) return;
643 for(i = 0; i < 4; i++) {
644 mvx[i] = s->mv[0][i][0];
645 mvy[i] = s->mv[0][i][1];
646 intra[i] = v->mb_type[0][s->block_index[i]];
649 /* calculate chroma MV vector from four luma MVs */
650 idx = (intra[3] << 3) | (intra[2] << 2) | (intra[1] << 1) | intra[0];
651 if(!idx) { // all blocks are inter
652 tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]);
653 ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]);
654 } else if(count[idx] == 1) { // 3 inter blocks
657 tx = mid_pred(mvx[1], mvx[2], mvx[3]);
658 ty = mid_pred(mvy[1], mvy[2], mvy[3]);
661 tx = mid_pred(mvx[0], mvx[2], mvx[3]);
662 ty = mid_pred(mvy[0], mvy[2], mvy[3]);
665 tx = mid_pred(mvx[0], mvx[1], mvx[3]);
666 ty = mid_pred(mvy[0], mvy[1], mvy[3]);
669 tx = mid_pred(mvx[0], mvx[1], mvx[2]);
670 ty = mid_pred(mvy[0], mvy[1], mvy[2]);
673 } else if(count[idx] == 2) {
675 for(i=0; i<3;i++) if(!intra[i]) {t1 = i; break;}
676 for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;}
677 tx = (mvx[t1] + mvx[t2]) / 2;
678 ty = (mvy[t1] + mvy[t2]) / 2;
680 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
681 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
682 return; //no need to do MC for inter blocks
685 s->current_picture.motion_val[1][s->block_index[0]][0] = tx;
686 s->current_picture.motion_val[1][s->block_index[0]][1] = ty;
687 uvmx = (tx + ((tx&3) == 3)) >> 1;
688 uvmy = (ty + ((ty&3) == 3)) >> 1;
690 uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
691 uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
694 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
695 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
697 if(v->profile != PROFILE_ADVANCED){
698 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
699 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
701 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
702 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
705 srcU = s->last_picture.data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
706 srcV = s->last_picture.data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
707 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
708 || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
709 || (unsigned)uvsrc_y > (s->v_edge_pos >> 1) - 9){
710 ff_emulated_edge_mc(s->edge_emu_buffer , srcU, s->uvlinesize, 8+1, 8+1,
711 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
712 ff_emulated_edge_mc(s->edge_emu_buffer + 16, srcV, s->uvlinesize, 8+1, 8+1,
713 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
714 srcU = s->edge_emu_buffer;
715 srcV = s->edge_emu_buffer + 16;
717 /* if we deal with range reduction we need to scale source blocks */
722 src = srcU; src2 = srcV;
723 for(j = 0; j < 9; j++) {
724 for(i = 0; i < 9; i++) {
725 src[i] = ((src[i] - 128) >> 1) + 128;
726 src2[i] = ((src2[i] - 128) >> 1) + 128;
728 src += s->uvlinesize;
729 src2 += s->uvlinesize;
732 /* if we deal with intensity compensation we need to scale source blocks */
733 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
737 src = srcU; src2 = srcV;
738 for(j = 0; j < 9; j++) {
739 for(i = 0; i < 9; i++) {
740 src[i] = v->lutuv[src[i]];
741 src2[i] = v->lutuv[src2[i]];
743 src += s->uvlinesize;
744 src2 += s->uvlinesize;
749 /* Chroma MC always uses qpel bilinear */
750 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
754 dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
755 dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
757 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
758 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
762 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
765 * Decode Simple/Main Profiles sequence header
766 * @see Figure 7-8, p16-17
767 * @param avctx Codec context
768 * @param gb GetBit context initialized from Codec context extra_data
771 static int decode_sequence_header(AVCodecContext *avctx, GetBitContext *gb)
773 VC1Context *v = avctx->priv_data;
775 av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32));
776 v->profile = get_bits(gb, 2);
777 if (v->profile == PROFILE_COMPLEX)
779 av_log(avctx, AV_LOG_ERROR, "WMV3 Complex Profile is not fully supported\n");
782 if (v->profile == PROFILE_ADVANCED)
784 return decode_sequence_header_adv(v, gb);
788 v->res_sm = get_bits(gb, 2); //reserved
791 av_log(avctx, AV_LOG_ERROR,
792 "Reserved RES_SM=%i is forbidden\n", v->res_sm);
798 v->frmrtq_postproc = get_bits(gb, 3); //common
799 // (bitrate-32kbps)/64kbps
800 v->bitrtq_postproc = get_bits(gb, 5); //common
801 v->s.loop_filter = get_bits1(gb); //common
802 if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE)
804 av_log(avctx, AV_LOG_ERROR,
805 "LOOPFILTER shell not be enabled in simple profile\n");
808 v->res_x8 = get_bits1(gb); //reserved
811 av_log(avctx, AV_LOG_ERROR,
812 "1 for reserved RES_X8 is forbidden\n");
815 v->multires = get_bits1(gb);
816 v->res_fasttx = get_bits1(gb);
819 av_log(avctx, AV_LOG_ERROR,
820 "0 for reserved RES_FASTTX is forbidden\n");
824 v->fastuvmc = get_bits1(gb); //common
825 if (!v->profile && !v->fastuvmc)
827 av_log(avctx, AV_LOG_ERROR,
828 "FASTUVMC unavailable in Simple Profile\n");
831 v->extended_mv = get_bits1(gb); //common
832 if (!v->profile && v->extended_mv)
834 av_log(avctx, AV_LOG_ERROR,
835 "Extended MVs unavailable in Simple Profile\n");
838 v->dquant = get_bits(gb, 2); //common
839 v->vstransform = get_bits1(gb); //common
841 v->res_transtab = get_bits1(gb);
844 av_log(avctx, AV_LOG_ERROR,
845 "1 for reserved RES_TRANSTAB is forbidden\n");
849 v->overlap = get_bits1(gb); //common
851 v->s.resync_marker = get_bits1(gb);
852 v->rangered = get_bits1(gb);
853 if (v->rangered && v->profile == PROFILE_SIMPLE)
855 av_log(avctx, AV_LOG_INFO,
856 "RANGERED should be set to 0 in simple profile\n");
859 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
860 v->quantizer_mode = get_bits(gb, 2); //common
862 v->finterpflag = get_bits1(gb); //common
863 v->res_rtm_flag = get_bits1(gb); //reserved
864 if (!v->res_rtm_flag)
866 // av_log(avctx, AV_LOG_ERROR,
867 // "0 for reserved RES_RTM_FLAG is forbidden\n");
868 av_log(avctx, AV_LOG_ERROR,
869 "Old WMV3 version detected, only I-frames will be decoded\n");
872 //TODO: figure out what they mean (always 0x402F)
873 if(!v->res_fasttx) skip_bits(gb, 16);
874 av_log(avctx, AV_LOG_DEBUG,
875 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
876 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
877 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
878 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
879 v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
880 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
881 v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
882 v->dquant, v->quantizer_mode, avctx->max_b_frames
887 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
890 v->level = get_bits(gb, 3);
893 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
895 v->chromaformat = get_bits(gb, 2);
896 if (v->chromaformat != 1)
898 av_log(v->s.avctx, AV_LOG_ERROR,
899 "Only 4:2:0 chroma format supported\n");
904 v->frmrtq_postproc = get_bits(gb, 3); //common
905 // (bitrate-32kbps)/64kbps
906 v->bitrtq_postproc = get_bits(gb, 5); //common
907 v->postprocflag = get_bits1(gb); //common
909 v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
910 v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
911 v->s.avctx->width = v->s.avctx->coded_width;
912 v->s.avctx->height = v->s.avctx->coded_height;
913 v->broadcast = get_bits1(gb);
914 v->interlace = get_bits1(gb);
915 v->tfcntrflag = get_bits1(gb);
916 v->finterpflag = get_bits1(gb);
917 skip_bits1(gb); // reserved
919 v->s.h_edge_pos = v->s.avctx->coded_width;
920 v->s.v_edge_pos = v->s.avctx->coded_height;
922 av_log(v->s.avctx, AV_LOG_DEBUG,
923 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
924 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
925 "TFCTRflag=%i, FINTERPflag=%i\n",
926 v->level, v->frmrtq_postproc, v->bitrtq_postproc,
927 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
928 v->tfcntrflag, v->finterpflag
931 v->psf = get_bits1(gb);
932 if(v->psf) { //PsF, 6.1.13
933 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
936 v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
937 if(get_bits1(gb)) { //Display Info - decoding is not affected by it
939 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
940 v->s.avctx->width = v->s.width = w = get_bits(gb, 14) + 1;
941 v->s.avctx->height = v->s.height = h = get_bits(gb, 14) + 1;
942 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
944 ar = get_bits(gb, 4);
946 v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
950 v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
953 if(get_bits1(gb)){ //framerate stuff
955 v->s.avctx->time_base.num = 32;
956 v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
959 nr = get_bits(gb, 8);
960 dr = get_bits(gb, 4);
961 if(nr && nr < 8 && dr && dr < 3){
962 v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
963 v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
969 v->color_prim = get_bits(gb, 8);
970 v->transfer_char = get_bits(gb, 8);
971 v->matrix_coef = get_bits(gb, 8);
975 v->hrd_param_flag = get_bits1(gb);
976 if(v->hrd_param_flag) {
978 v->hrd_num_leaky_buckets = get_bits(gb, 5);
979 skip_bits(gb, 4); //bitrate exponent
980 skip_bits(gb, 4); //buffer size exponent
981 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
982 skip_bits(gb, 16); //hrd_rate[n]
983 skip_bits(gb, 16); //hrd_buffer[n]
989 static int decode_entry_point(AVCodecContext *avctx, GetBitContext *gb)
991 VC1Context *v = avctx->priv_data;
992 int i, blink, clentry, refdist;
994 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
995 blink = get_bits1(gb); // broken link
996 clentry = get_bits1(gb); // closed entry
997 v->panscanflag = get_bits1(gb);
998 refdist = get_bits1(gb); // refdist flag
999 v->s.loop_filter = get_bits1(gb);
1000 v->fastuvmc = get_bits1(gb);
1001 v->extended_mv = get_bits1(gb);
1002 v->dquant = get_bits(gb, 2);
1003 v->vstransform = get_bits1(gb);
1004 v->overlap = get_bits1(gb);
1005 v->quantizer_mode = get_bits(gb, 2);
1007 if(v->hrd_param_flag){
1008 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
1009 skip_bits(gb, 8); //hrd_full[n]
1014 avctx->coded_width = (get_bits(gb, 12)+1)<<1;
1015 avctx->coded_height = (get_bits(gb, 12)+1)<<1;
1018 v->extended_dmv = get_bits1(gb);
1020 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
1021 skip_bits(gb, 3); // Y range, ignored for now
1024 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
1025 skip_bits(gb, 3); // UV range, ignored for now
1028 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
1029 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
1030 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
1031 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
1032 blink, clentry, v->panscanflag, refdist, v->s.loop_filter,
1033 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
1038 static int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
1040 int pqindex, lowquant, status;
1042 if(v->finterpflag) v->interpfrm = get_bits1(gb);
1043 skip_bits(gb, 2); //framecnt unused
1045 if (v->rangered) v->rangeredfrm = get_bits1(gb);
1046 v->s.pict_type = get_bits1(gb);
1047 if (v->s.avctx->max_b_frames) {
1048 if (!v->s.pict_type) {
1049 if (get_bits1(gb)) v->s.pict_type = I_TYPE;
1050 else v->s.pict_type = B_TYPE;
1051 } else v->s.pict_type = P_TYPE;
1052 } else v->s.pict_type = v->s.pict_type ? P_TYPE : I_TYPE;
1055 if(v->s.pict_type == B_TYPE) {
1056 v->bfraction = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1057 v->bfraction = ff_vc1_bfraction_lut[v->bfraction];
1058 if(v->bfraction == 0) {
1059 v->s.pict_type = BI_TYPE;
1062 if(v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1063 skip_bits(gb, 7); // skip buffer fullness
1066 if(v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1068 if(v->s.pict_type == P_TYPE)
1071 /* Quantizer stuff */
1072 pqindex = get_bits(gb, 5);
1073 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1074 v->pq = ff_vc1_pquant_table[0][pqindex];
1076 v->pq = ff_vc1_pquant_table[1][pqindex];
1079 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1080 v->pquantizer = pqindex < 9;
1081 if (v->quantizer_mode == QUANT_NON_UNIFORM)
1083 v->pqindex = pqindex;
1084 if (pqindex < 9) v->halfpq = get_bits1(gb);
1086 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
1087 v->pquantizer = get_bits1(gb);
1089 if (v->extended_mv == 1) v->mvrange = get_unary(gb, 0, 3);
1090 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1091 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1092 v->range_x = 1 << (v->k_x - 1);
1093 v->range_y = 1 << (v->k_y - 1);
1094 if (v->profile == PROFILE_ADVANCED)
1096 if (v->postprocflag) v->postproc = get_bits1(gb);
1099 if (v->multires && v->s.pict_type != B_TYPE) v->respic = get_bits(gb, 2);
1101 if(v->res_x8 && (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)){
1102 if(get_bits1(gb))return -1;
1104 //av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
1105 // (v->s.pict_type == P_TYPE) ? 'P' : ((v->s.pict_type == I_TYPE) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
1107 if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
1109 switch(v->s.pict_type) {
1111 if (v->pq < 5) v->tt_index = 0;
1112 else if(v->pq < 13) v->tt_index = 1;
1113 else v->tt_index = 2;
1115 lowquant = (v->pq > 12) ? 0 : 1;
1116 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
1117 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
1119 int scale, shift, i;
1120 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
1121 v->lumscale = get_bits(gb, 6);
1122 v->lumshift = get_bits(gb, 6);
1124 /* fill lookup tables for intensity compensation */
1127 shift = (255 - v->lumshift * 2) << 6;
1128 if(v->lumshift > 31)
1131 scale = v->lumscale + 32;
1132 if(v->lumshift > 31)
1133 shift = (v->lumshift - 64) << 6;
1135 shift = v->lumshift << 6;
1137 for(i = 0; i < 256; i++) {
1138 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
1139 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
1142 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1143 v->s.quarter_sample = 0;
1144 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1145 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1146 v->s.quarter_sample = 0;
1148 v->s.quarter_sample = 1;
1150 v->s.quarter_sample = 1;
1151 v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || (v->mv_mode == MV_PMODE_INTENSITY_COMP && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN));
1153 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1154 v->mv_mode2 == MV_PMODE_MIXED_MV)
1155 || v->mv_mode == MV_PMODE_MIXED_MV)
1157 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1158 if (status < 0) return -1;
1159 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1160 "Imode: %i, Invert: %i\n", status>>1, status&1);
1162 v->mv_type_is_raw = 0;
1163 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1165 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1166 if (status < 0) return -1;
1167 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1168 "Imode: %i, Invert: %i\n", status>>1, status&1);
1170 /* Hopefully this is correct for P frames */
1171 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1172 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1176 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1177 vop_dquant_decoding(v);
1180 v->ttfrm = 0; //FIXME Is that so ?
1183 v->ttmbf = get_bits1(gb);
1186 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1194 if (v->pq < 5) v->tt_index = 0;
1195 else if(v->pq < 13) v->tt_index = 1;
1196 else v->tt_index = 2;
1198 lowquant = (v->pq > 12) ? 0 : 1;
1199 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1200 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1201 v->s.mspel = v->s.quarter_sample;
1203 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1204 if (status < 0) return -1;
1205 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1206 "Imode: %i, Invert: %i\n", status>>1, status&1);
1207 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1208 if (status < 0) return -1;
1209 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1210 "Imode: %i, Invert: %i\n", status>>1, status&1);
1212 v->s.mv_table_index = get_bits(gb, 2);
1213 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1217 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1218 vop_dquant_decoding(v);
1224 v->ttmbf = get_bits1(gb);
1227 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1237 v->c_ac_table_index = decode012(gb);
1238 if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1240 v->y_ac_table_index = decode012(gb);
1243 v->s.dc_table_index = get_bits1(gb);
1245 if(v->s.pict_type == BI_TYPE) {
1246 v->s.pict_type = B_TYPE;
1252 static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
1254 int pqindex, lowquant;
1257 v->p_frame_skipped = 0;
1260 v->fcm = decode012(gb);
1261 if(v->fcm) return -1; // interlaced frames/fields are not implemented
1263 switch(get_unary(gb, 0, 4)) {
1265 v->s.pict_type = P_TYPE;
1268 v->s.pict_type = B_TYPE;
1271 v->s.pict_type = I_TYPE;
1274 v->s.pict_type = BI_TYPE;
1277 v->s.pict_type = P_TYPE; // skipped pic
1278 v->p_frame_skipped = 1;
1284 if(!v->interlace || v->psf) {
1285 v->rptfrm = get_bits(gb, 2);
1287 v->tff = get_bits1(gb);
1288 v->rptfrm = get_bits1(gb);
1291 if(v->panscanflag) {
1294 v->rnd = get_bits1(gb);
1296 v->uvsamp = get_bits1(gb);
1297 if(v->finterpflag) v->interpfrm = get_bits1(gb);
1298 if(v->s.pict_type == B_TYPE) {
1299 v->bfraction = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1300 v->bfraction = ff_vc1_bfraction_lut[v->bfraction];
1301 if(v->bfraction == 0) {
1302 v->s.pict_type = BI_TYPE; /* XXX: should not happen here */
1305 pqindex = get_bits(gb, 5);
1306 v->pqindex = pqindex;
1307 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1308 v->pq = ff_vc1_pquant_table[0][pqindex];
1310 v->pq = ff_vc1_pquant_table[1][pqindex];
1313 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1314 v->pquantizer = pqindex < 9;
1315 if (v->quantizer_mode == QUANT_NON_UNIFORM)
1317 v->pqindex = pqindex;
1318 if (pqindex < 9) v->halfpq = get_bits1(gb);
1320 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
1321 v->pquantizer = get_bits1(gb);
1323 if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
1325 switch(v->s.pict_type) {
1328 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
1329 if (status < 0) return -1;
1330 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
1331 "Imode: %i, Invert: %i\n", status>>1, status&1);
1332 v->condover = CONDOVER_NONE;
1333 if(v->overlap && v->pq <= 8) {
1334 v->condover = decode012(gb);
1335 if(v->condover == CONDOVER_SELECT) {
1336 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
1337 if (status < 0) return -1;
1338 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
1339 "Imode: %i, Invert: %i\n", status>>1, status&1);
1345 v->postproc = get_bits1(gb);
1346 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
1347 else v->mvrange = 0;
1348 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1349 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1350 v->range_x = 1 << (v->k_x - 1);
1351 v->range_y = 1 << (v->k_y - 1);
1353 if (v->pq < 5) v->tt_index = 0;
1354 else if(v->pq < 13) v->tt_index = 1;
1355 else v->tt_index = 2;
1357 lowquant = (v->pq > 12) ? 0 : 1;
1358 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
1359 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
1361 int scale, shift, i;
1362 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
1363 v->lumscale = get_bits(gb, 6);
1364 v->lumshift = get_bits(gb, 6);
1365 /* fill lookup tables for intensity compensation */
1368 shift = (255 - v->lumshift * 2) << 6;
1369 if(v->lumshift > 31)
1372 scale = v->lumscale + 32;
1373 if(v->lumshift > 31)
1374 shift = (v->lumshift - 64) << 6;
1376 shift = v->lumshift << 6;
1378 for(i = 0; i < 256; i++) {
1379 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
1380 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
1384 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1385 v->s.quarter_sample = 0;
1386 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1387 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1388 v->s.quarter_sample = 0;
1390 v->s.quarter_sample = 1;
1392 v->s.quarter_sample = 1;
1393 v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || (v->mv_mode == MV_PMODE_INTENSITY_COMP && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN));
1395 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1396 v->mv_mode2 == MV_PMODE_MIXED_MV)
1397 || v->mv_mode == MV_PMODE_MIXED_MV)
1399 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1400 if (status < 0) return -1;
1401 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1402 "Imode: %i, Invert: %i\n", status>>1, status&1);
1404 v->mv_type_is_raw = 0;
1405 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1407 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1408 if (status < 0) return -1;
1409 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1410 "Imode: %i, Invert: %i\n", status>>1, status&1);
1412 /* Hopefully this is correct for P frames */
1413 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1414 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1417 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1418 vop_dquant_decoding(v);
1421 v->ttfrm = 0; //FIXME Is that so ?
1424 v->ttmbf = get_bits1(gb);
1427 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1436 v->postproc = get_bits1(gb);
1437 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
1438 else v->mvrange = 0;
1439 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1440 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1441 v->range_x = 1 << (v->k_x - 1);
1442 v->range_y = 1 << (v->k_y - 1);
1444 if (v->pq < 5) v->tt_index = 0;
1445 else if(v->pq < 13) v->tt_index = 1;
1446 else v->tt_index = 2;
1448 lowquant = (v->pq > 12) ? 0 : 1;
1449 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1450 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1451 v->s.mspel = v->s.quarter_sample;
1453 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1454 if (status < 0) return -1;
1455 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1456 "Imode: %i, Invert: %i\n", status>>1, status&1);
1457 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1458 if (status < 0) return -1;
1459 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1460 "Imode: %i, Invert: %i\n", status>>1, status&1);
1462 v->s.mv_table_index = get_bits(gb, 2);
1463 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1467 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1468 vop_dquant_decoding(v);
1474 v->ttmbf = get_bits1(gb);
1477 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1487 v->c_ac_table_index = decode012(gb);
1488 if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1490 v->y_ac_table_index = decode012(gb);
1493 v->s.dc_table_index = get_bits1(gb);
1494 if ((v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE) && v->dquant) {
1495 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1496 vop_dquant_decoding(v);
1500 if(v->s.pict_type == BI_TYPE) {
1501 v->s.pict_type = B_TYPE;
1507 /***********************************************************************/
1509 * @defgroup block VC-1 Block-level functions
1510 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
1516 * @brief Get macroblock-level quantizer scale
1518 #define GET_MQUANT() \
1522 if (v->dqprofile == DQPROFILE_ALL_MBS) \
1526 mquant = (get_bits1(gb)) ? v->altpq : v->pq; \
1530 mqdiff = get_bits(gb, 3); \
1531 if (mqdiff != 7) mquant = v->pq + mqdiff; \
1532 else mquant = get_bits(gb, 5); \
1535 if(v->dqprofile == DQPROFILE_SINGLE_EDGE) \
1536 edges = 1 << v->dqsbedge; \
1537 else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
1538 edges = (3 << v->dqsbedge) % 15; \
1539 else if(v->dqprofile == DQPROFILE_FOUR_EDGES) \
1541 if((edges&1) && !s->mb_x) \
1542 mquant = v->altpq; \
1543 if((edges&2) && s->first_slice_line) \
1544 mquant = v->altpq; \
1545 if((edges&4) && s->mb_x == (s->mb_width - 1)) \
1546 mquant = v->altpq; \
1547 if((edges&8) && s->mb_y == (s->mb_height - 1)) \
1548 mquant = v->altpq; \
1552 * @def GET_MVDATA(_dmv_x, _dmv_y)
1553 * @brief Get MV differentials
1554 * @see MVDATA decoding from 8.3.5.2, p(1)20
1555 * @param _dmv_x Horizontal differential for decoded MV
1556 * @param _dmv_y Vertical differential for decoded MV
1558 #define GET_MVDATA(_dmv_x, _dmv_y) \
1559 index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table,\
1560 VC1_MV_DIFF_VLC_BITS, 2); \
1563 mb_has_coeffs = 1; \
1566 else mb_has_coeffs = 0; \
1568 if (!index) { _dmv_x = _dmv_y = 0; } \
1569 else if (index == 35) \
1571 _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
1572 _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
1574 else if (index == 36) \
1583 if (!s->quarter_sample && index1 == 5) val = 1; \
1585 if(size_table[index1] - val > 0) \
1586 val = get_bits(gb, size_table[index1] - val); \
1588 sign = 0 - (val&1); \
1589 _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
1592 if (!s->quarter_sample && index1 == 5) val = 1; \
1594 if(size_table[index1] - val > 0) \
1595 val = get_bits(gb, size_table[index1] - val); \
1597 sign = 0 - (val&1); \
1598 _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
1601 /** Predict and set motion vector
1603 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)
1605 int xy, wrap, off = 0;
1610 /* scale MV difference to be quad-pel */
1611 dmv_x <<= 1 - s->quarter_sample;
1612 dmv_y <<= 1 - s->quarter_sample;
1614 wrap = s->b8_stride;
1615 xy = s->block_index[n];
1618 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
1619 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
1620 s->current_picture.motion_val[1][xy][0] = 0;
1621 s->current_picture.motion_val[1][xy][1] = 0;
1622 if(mv1) { /* duplicate motion data for 1-MV block */
1623 s->current_picture.motion_val[0][xy + 1][0] = 0;
1624 s->current_picture.motion_val[0][xy + 1][1] = 0;
1625 s->current_picture.motion_val[0][xy + wrap][0] = 0;
1626 s->current_picture.motion_val[0][xy + wrap][1] = 0;
1627 s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
1628 s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
1629 s->current_picture.motion_val[1][xy + 1][0] = 0;
1630 s->current_picture.motion_val[1][xy + 1][1] = 0;
1631 s->current_picture.motion_val[1][xy + wrap][0] = 0;
1632 s->current_picture.motion_val[1][xy + wrap][1] = 0;
1633 s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
1634 s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
1639 C = s->current_picture.motion_val[0][xy - 1];
1640 A = s->current_picture.motion_val[0][xy - wrap];
1642 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
1644 //in 4-MV mode different blocks have different B predictor position
1647 off = (s->mb_x > 0) ? -1 : 1;
1650 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
1659 B = s->current_picture.motion_val[0][xy - wrap + off];
1661 if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds
1662 if(s->mb_width == 1) {
1666 px = mid_pred(A[0], B[0], C[0]);
1667 py = mid_pred(A[1], B[1], C[1]);
1669 } else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds
1675 /* Pullback MV as specified in 8.3.5.3.4 */
1678 qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0);
1679 qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0);
1680 X = (s->mb_width << 6) - 4;
1681 Y = (s->mb_height << 6) - 4;
1683 if(qx + px < -60) px = -60 - qx;
1684 if(qy + py < -60) py = -60 - qy;
1686 if(qx + px < -28) px = -28 - qx;
1687 if(qy + py < -28) py = -28 - qy;
1689 if(qx + px > X) px = X - qx;
1690 if(qy + py > Y) py = Y - qy;
1692 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1693 if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) {
1694 if(is_intra[xy - wrap])
1695 sum = FFABS(px) + FFABS(py);
1697 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1699 if(get_bits1(&s->gb)) {
1707 if(is_intra[xy - 1])
1708 sum = FFABS(px) + FFABS(py);
1710 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1712 if(get_bits1(&s->gb)) {
1722 /* store MV using signed modulus of MV range defined in 4.11 */
1723 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
1724 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
1725 if(mv1) { /* duplicate motion data for 1-MV block */
1726 s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0];
1727 s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1];
1728 s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0];
1729 s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1];
1730 s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0];
1731 s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1];
1735 /** Motion compensation for direct or interpolated blocks in B-frames
1737 static void vc1_interp_mc(VC1Context *v)
1739 MpegEncContext *s = &v->s;
1740 DSPContext *dsp = &v->s.dsp;
1741 uint8_t *srcY, *srcU, *srcV;
1742 int dxy, uvdxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
1744 if(!v->s.next_picture.data[0])return;
1746 mx = s->mv[1][0][0];
1747 my = s->mv[1][0][1];
1748 uvmx = (mx + ((mx & 3) == 3)) >> 1;
1749 uvmy = (my + ((my & 3) == 3)) >> 1;
1751 uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
1752 uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
1754 srcY = s->next_picture.data[0];
1755 srcU = s->next_picture.data[1];
1756 srcV = s->next_picture.data[2];
1758 src_x = s->mb_x * 16 + (mx >> 2);
1759 src_y = s->mb_y * 16 + (my >> 2);
1760 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
1761 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
1763 if(v->profile != PROFILE_ADVANCED){
1764 src_x = av_clip( src_x, -16, s->mb_width * 16);
1765 src_y = av_clip( src_y, -16, s->mb_height * 16);
1766 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
1767 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
1769 src_x = av_clip( src_x, -17, s->avctx->coded_width);
1770 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
1771 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
1772 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
1775 srcY += src_y * s->linesize + src_x;
1776 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
1777 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
1779 /* for grayscale we should not try to read from unknown area */
1780 if(s->flags & CODEC_FLAG_GRAY) {
1781 srcU = s->edge_emu_buffer + 18 * s->linesize;
1782 srcV = s->edge_emu_buffer + 18 * s->linesize;
1786 || (unsigned)src_x > s->h_edge_pos - (mx&3) - 16
1787 || (unsigned)src_y > s->v_edge_pos - (my&3) - 16){
1788 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
1790 srcY -= s->mspel * (1 + s->linesize);
1791 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
1792 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
1793 srcY = s->edge_emu_buffer;
1794 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
1795 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
1796 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
1797 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
1800 /* if we deal with range reduction we need to scale source blocks */
1801 if(v->rangeredfrm) {
1803 uint8_t *src, *src2;
1806 for(j = 0; j < 17 + s->mspel*2; j++) {
1807 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
1810 src = srcU; src2 = srcV;
1811 for(j = 0; j < 9; j++) {
1812 for(i = 0; i < 9; i++) {
1813 src[i] = ((src[i] - 128) >> 1) + 128;
1814 src2[i] = ((src2[i] - 128) >> 1) + 128;
1816 src += s->uvlinesize;
1817 src2 += s->uvlinesize;
1820 srcY += s->mspel * (1 + s->linesize);
1825 dxy = ((my & 1) << 1) | (mx & 1);
1827 dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
1829 if(s->flags & CODEC_FLAG_GRAY) return;
1830 /* Chroma MC always uses qpel blilinear */
1831 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
1834 dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
1835 dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
1838 static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
1842 #if B_FRACTION_DEN==256
1846 return 2 * ((value * n + 255) >> 9);
1847 return (value * n + 128) >> 8;
1850 n -= B_FRACTION_DEN;
1852 return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
1853 return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
1857 /** Reconstruct motion vector for B-frame and do motion compensation
1859 static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
1862 v->mv_mode2 = v->mv_mode;
1863 v->mv_mode = MV_PMODE_INTENSITY_COMP;
1868 if(v->use_ic) v->mv_mode = v->mv_mode2;
1871 if(mode == BMV_TYPE_INTERPOLATED) {
1874 if(v->use_ic) v->mv_mode = v->mv_mode2;
1878 if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2;
1879 vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
1880 if(v->use_ic) v->mv_mode = v->mv_mode2;
1883 static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype)
1885 MpegEncContext *s = &v->s;
1886 int xy, wrap, off = 0;
1891 const uint8_t *is_intra = v->mb_type[0];
1895 /* scale MV difference to be quad-pel */
1896 dmv_x[0] <<= 1 - s->quarter_sample;
1897 dmv_y[0] <<= 1 - s->quarter_sample;
1898 dmv_x[1] <<= 1 - s->quarter_sample;
1899 dmv_y[1] <<= 1 - s->quarter_sample;
1901 wrap = s->b8_stride;
1902 xy = s->block_index[0];
1905 s->current_picture.motion_val[0][xy][0] =
1906 s->current_picture.motion_val[0][xy][1] =
1907 s->current_picture.motion_val[1][xy][0] =
1908 s->current_picture.motion_val[1][xy][1] = 0;
1911 s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
1912 s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
1913 s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
1914 s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
1916 /* Pullback predicted motion vectors as specified in 8.4.5.4 */
1917 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));
1918 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));
1919 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));
1920 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));
1922 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
1923 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
1924 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
1925 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
1929 if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
1930 C = s->current_picture.motion_val[0][xy - 2];
1931 A = s->current_picture.motion_val[0][xy - wrap*2];
1932 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
1933 B = s->current_picture.motion_val[0][xy - wrap*2 + off];
1935 if(!s->mb_x) C[0] = C[1] = 0;
1936 if(!s->first_slice_line) { // predictor A is not out of bounds
1937 if(s->mb_width == 1) {
1941 px = mid_pred(A[0], B[0], C[0]);
1942 py = mid_pred(A[1], B[1], C[1]);
1944 } else if(s->mb_x) { // predictor C is not out of bounds
1950 /* Pullback MV as specified in 8.3.5.3.4 */
1953 if(v->profile < PROFILE_ADVANCED) {
1954 qx = (s->mb_x << 5);
1955 qy = (s->mb_y << 5);
1956 X = (s->mb_width << 5) - 4;
1957 Y = (s->mb_height << 5) - 4;
1958 if(qx + px < -28) px = -28 - qx;
1959 if(qy + py < -28) py = -28 - qy;
1960 if(qx + px > X) px = X - qx;
1961 if(qy + py > Y) py = Y - qy;
1963 qx = (s->mb_x << 6);
1964 qy = (s->mb_y << 6);
1965 X = (s->mb_width << 6) - 4;
1966 Y = (s->mb_height << 6) - 4;
1967 if(qx + px < -60) px = -60 - qx;
1968 if(qy + py < -60) py = -60 - qy;
1969 if(qx + px > X) px = X - qx;
1970 if(qy + py > Y) py = Y - qy;
1973 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1974 if(0 && !s->first_slice_line && s->mb_x) {
1975 if(is_intra[xy - wrap])
1976 sum = FFABS(px) + FFABS(py);
1978 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1980 if(get_bits1(&s->gb)) {
1988 if(is_intra[xy - 2])
1989 sum = FFABS(px) + FFABS(py);
1991 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1993 if(get_bits1(&s->gb)) {
2003 /* store MV using signed modulus of MV range defined in 4.11 */
2004 s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
2005 s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
2007 if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
2008 C = s->current_picture.motion_val[1][xy - 2];
2009 A = s->current_picture.motion_val[1][xy - wrap*2];
2010 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
2011 B = s->current_picture.motion_val[1][xy - wrap*2 + off];
2013 if(!s->mb_x) C[0] = C[1] = 0;
2014 if(!s->first_slice_line) { // predictor A is not out of bounds
2015 if(s->mb_width == 1) {
2019 px = mid_pred(A[0], B[0], C[0]);
2020 py = mid_pred(A[1], B[1], C[1]);
2022 } else if(s->mb_x) { // predictor C is not out of bounds
2028 /* Pullback MV as specified in 8.3.5.3.4 */
2031 if(v->profile < PROFILE_ADVANCED) {
2032 qx = (s->mb_x << 5);
2033 qy = (s->mb_y << 5);
2034 X = (s->mb_width << 5) - 4;
2035 Y = (s->mb_height << 5) - 4;
2036 if(qx + px < -28) px = -28 - qx;
2037 if(qy + py < -28) py = -28 - qy;
2038 if(qx + px > X) px = X - qx;
2039 if(qy + py > Y) py = Y - qy;
2041 qx = (s->mb_x << 6);
2042 qy = (s->mb_y << 6);
2043 X = (s->mb_width << 6) - 4;
2044 Y = (s->mb_height << 6) - 4;
2045 if(qx + px < -60) px = -60 - qx;
2046 if(qy + py < -60) py = -60 - qy;
2047 if(qx + px > X) px = X - qx;
2048 if(qy + py > Y) py = Y - qy;
2051 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
2052 if(0 && !s->first_slice_line && s->mb_x) {
2053 if(is_intra[xy - wrap])
2054 sum = FFABS(px) + FFABS(py);
2056 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
2058 if(get_bits1(&s->gb)) {
2066 if(is_intra[xy - 2])
2067 sum = FFABS(px) + FFABS(py);
2069 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
2071 if(get_bits1(&s->gb)) {
2081 /* store MV using signed modulus of MV range defined in 4.11 */
2083 s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
2084 s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
2086 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
2087 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
2088 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
2089 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
2092 /** Get predicted DC value for I-frames only
2093 * prediction dir: left=0, top=1
2094 * @param s MpegEncContext
2095 * @param[in] n block index in the current MB
2096 * @param dc_val_ptr Pointer to DC predictor
2097 * @param dir_ptr Prediction direction for use in AC prediction
2099 static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
2100 int16_t **dc_val_ptr, int *dir_ptr)
2102 int a, b, c, wrap, pred, scale;
2104 static const uint16_t dcpred[32] = {
2105 -1, 1024, 512, 341, 256, 205, 171, 146, 128,
2106 114, 102, 93, 85, 79, 73, 68, 64,
2107 60, 57, 54, 51, 49, 47, 45, 43,
2108 41, 39, 38, 37, 35, 34, 33
2111 /* find prediction - wmv3_dc_scale always used here in fact */
2112 if (n < 4) scale = s->y_dc_scale;
2113 else scale = s->c_dc_scale;
2115 wrap = s->block_wrap[n];
2116 dc_val= s->dc_val[0] + s->block_index[n];
2122 b = dc_val[ - 1 - wrap];
2123 a = dc_val[ - wrap];
2125 if (pq < 9 || !overlap)
2127 /* Set outer values */
2128 if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
2129 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
2133 /* Set outer values */
2134 if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
2135 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
2138 if (abs(a - b) <= abs(b - c)) {
2146 /* update predictor */
2147 *dc_val_ptr = &dc_val[0];
2152 /** Get predicted DC value
2153 * prediction dir: left=0, top=1
2154 * @param s MpegEncContext
2155 * @param[in] n block index in the current MB
2156 * @param dc_val_ptr Pointer to DC predictor
2157 * @param dir_ptr Prediction direction for use in AC prediction
2159 static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
2160 int a_avail, int c_avail,
2161 int16_t **dc_val_ptr, int *dir_ptr)
2163 int a, b, c, wrap, pred, scale;
2165 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2168 /* find prediction - wmv3_dc_scale always used here in fact */
2169 if (n < 4) scale = s->y_dc_scale;
2170 else scale = s->c_dc_scale;
2172 wrap = s->block_wrap[n];
2173 dc_val= s->dc_val[0] + s->block_index[n];
2179 b = dc_val[ - 1 - wrap];
2180 a = dc_val[ - wrap];
2181 /* scale predictors if needed */
2182 q1 = s->current_picture.qscale_table[mb_pos];
2183 if(c_avail && (n!= 1 && n!=3)) {
2184 q2 = s->current_picture.qscale_table[mb_pos - 1];
2186 c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2188 if(a_avail && (n!= 2 && n!=3)) {
2189 q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2191 a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2193 if(a_avail && c_avail && (n!=3)) {
2196 if(n != 2) off -= s->mb_stride;
2197 q2 = s->current_picture.qscale_table[off];
2199 b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2202 if(a_avail && c_avail) {
2203 if(abs(a - b) <= abs(b - c)) {
2210 } else if(a_avail) {
2213 } else if(c_avail) {
2221 /* update predictor */
2222 *dc_val_ptr = &dc_val[0];
2228 * @defgroup std_mb VC1 Macroblock-level functions in Simple/Main Profiles
2229 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
2233 static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
2235 int xy, wrap, pred, a, b, c;
2237 xy = s->block_index[n];
2238 wrap = s->b8_stride;
2243 a = s->coded_block[xy - 1 ];
2244 b = s->coded_block[xy - 1 - wrap];
2245 c = s->coded_block[xy - wrap];
2254 *coded_block_ptr = &s->coded_block[xy];
2260 * Decode one AC coefficient
2261 * @param v The VC1 context
2262 * @param last Last coefficient
2263 * @param skip How much zero coefficients to skip
2264 * @param value Decoded AC coefficient value
2267 static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset)
2269 GetBitContext *gb = &v->s.gb;
2270 int index, escape, run = 0, level = 0, lst = 0;
2272 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
2273 if (index != vc1_ac_sizes[codingset] - 1) {
2274 run = vc1_index_decode_table[codingset][index][0];
2275 level = vc1_index_decode_table[codingset][index][1];
2276 lst = index >= vc1_last_decode_table[codingset];
2280 escape = decode210(gb);
2282 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
2283 run = vc1_index_decode_table[codingset][index][0];
2284 level = vc1_index_decode_table[codingset][index][1];
2285 lst = index >= vc1_last_decode_table[codingset];
2288 level += vc1_last_delta_level_table[codingset][run];
2290 level += vc1_delta_level_table[codingset][run];
2293 run += vc1_last_delta_run_table[codingset][level] + 1;
2295 run += vc1_delta_run_table[codingset][level] + 1;
2301 lst = get_bits1(gb);
2302 if(v->s.esc3_level_length == 0) {
2303 if(v->pq < 8 || v->dquantfrm) { // table 59
2304 v->s.esc3_level_length = get_bits(gb, 3);
2305 if(!v->s.esc3_level_length)
2306 v->s.esc3_level_length = get_bits(gb, 2) + 8;
2308 v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
2310 v->s.esc3_run_length = 3 + get_bits(gb, 2);
2312 run = get_bits(gb, v->s.esc3_run_length);
2313 sign = get_bits1(gb);
2314 level = get_bits(gb, v->s.esc3_level_length);
2325 /** Decode intra block in intra frames - should be faster than decode_intra_block
2326 * @param v VC1Context
2327 * @param block block to decode
2328 * @param coded are AC coeffs present or not
2329 * @param codingset set of VLC to decode data
2331 static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset)
2333 GetBitContext *gb = &v->s.gb;
2334 MpegEncContext *s = &v->s;
2335 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2338 int16_t *ac_val, *ac_val2;
2341 /* Get DC differential */
2343 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2345 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2348 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2353 if (dcdiff == 119 /* ESC index value */)
2355 /* TODO: Optimize */
2356 if (v->pq == 1) dcdiff = get_bits(gb, 10);
2357 else if (v->pq == 2) dcdiff = get_bits(gb, 9);
2358 else dcdiff = get_bits(gb, 8);
2363 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2364 else if (v->pq == 2)
2365 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2372 dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
2375 /* Store the quantized DC coeff, used for prediction */
2377 block[0] = dcdiff * s->y_dc_scale;
2379 block[0] = dcdiff * s->c_dc_scale;
2392 int last = 0, skip, value;
2393 const int8_t *zz_table;
2397 scale = v->pq * 2 + v->halfpq;
2401 zz_table = ff_vc1_horizontal_zz;
2403 zz_table = ff_vc1_vertical_zz;
2405 zz_table = ff_vc1_normal_zz;
2407 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2409 if(dc_pred_dir) //left
2412 ac_val -= 16 * s->block_wrap[n];
2415 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2419 block[zz_table[i++]] = value;
2422 /* apply AC prediction if needed */
2424 if(dc_pred_dir) { //left
2425 for(k = 1; k < 8; k++)
2426 block[k << 3] += ac_val[k];
2428 for(k = 1; k < 8; k++)
2429 block[k] += ac_val[k + 8];
2432 /* save AC coeffs for further prediction */
2433 for(k = 1; k < 8; k++) {
2434 ac_val2[k] = block[k << 3];
2435 ac_val2[k + 8] = block[k];
2438 /* scale AC coeffs */
2439 for(k = 1; k < 64; k++)
2443 block[k] += (block[k] < 0) ? -v->pq : v->pq;
2446 if(s->ac_pred) i = 63;
2452 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2455 scale = v->pq * 2 + v->halfpq;
2456 memset(ac_val2, 0, 16 * 2);
2457 if(dc_pred_dir) {//left
2460 memcpy(ac_val2, ac_val, 8 * 2);
2462 ac_val -= 16 * s->block_wrap[n];
2464 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2467 /* apply AC prediction if needed */
2469 if(dc_pred_dir) { //left
2470 for(k = 1; k < 8; k++) {
2471 block[k << 3] = ac_val[k] * scale;
2472 if(!v->pquantizer && block[k << 3])
2473 block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq;
2476 for(k = 1; k < 8; k++) {
2477 block[k] = ac_val[k + 8] * scale;
2478 if(!v->pquantizer && block[k])
2479 block[k] += (block[k] < 0) ? -v->pq : v->pq;
2485 s->block_last_index[n] = i;
2490 /** Decode intra block in intra frames - should be faster than decode_intra_block
2491 * @param v VC1Context
2492 * @param block block to decode
2493 * @param coded are AC coeffs present or not
2494 * @param codingset set of VLC to decode data
2496 static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant)
2498 GetBitContext *gb = &v->s.gb;
2499 MpegEncContext *s = &v->s;
2500 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2503 int16_t *ac_val, *ac_val2;
2505 int a_avail = v->a_avail, c_avail = v->c_avail;
2506 int use_pred = s->ac_pred;
2509 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2511 /* Get DC differential */
2513 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2515 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2518 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2523 if (dcdiff == 119 /* ESC index value */)
2525 /* TODO: Optimize */
2526 if (mquant == 1) dcdiff = get_bits(gb, 10);
2527 else if (mquant == 2) dcdiff = get_bits(gb, 9);
2528 else dcdiff = get_bits(gb, 8);
2533 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2534 else if (mquant == 2)
2535 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2542 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
2545 /* Store the quantized DC coeff, used for prediction */
2547 block[0] = dcdiff * s->y_dc_scale;
2549 block[0] = dcdiff * s->c_dc_scale;
2558 /* check if AC is needed at all */
2559 if(!a_avail && !c_avail) use_pred = 0;
2560 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2563 scale = mquant * 2 + v->halfpq;
2565 if(dc_pred_dir) //left
2568 ac_val -= 16 * s->block_wrap[n];
2570 q1 = s->current_picture.qscale_table[mb_pos];
2571 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
2572 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2573 if(dc_pred_dir && n==1) q2 = q1;
2574 if(!dc_pred_dir && n==2) q2 = q1;
2578 int last = 0, skip, value;
2579 const int8_t *zz_table;
2584 zz_table = ff_vc1_horizontal_zz;
2586 zz_table = ff_vc1_vertical_zz;
2588 zz_table = ff_vc1_normal_zz;
2591 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2595 block[zz_table[i++]] = value;
2598 /* apply AC prediction if needed */
2600 /* scale predictors if needed*/
2602 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2603 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2605 if(dc_pred_dir) { //left
2606 for(k = 1; k < 8; k++)
2607 block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2609 for(k = 1; k < 8; k++)
2610 block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2613 if(dc_pred_dir) { //left
2614 for(k = 1; k < 8; k++)
2615 block[k << 3] += ac_val[k];
2617 for(k = 1; k < 8; k++)
2618 block[k] += ac_val[k + 8];
2622 /* save AC coeffs for further prediction */
2623 for(k = 1; k < 8; k++) {
2624 ac_val2[k] = block[k << 3];
2625 ac_val2[k + 8] = block[k];
2628 /* scale AC coeffs */
2629 for(k = 1; k < 64; k++)
2633 block[k] += (block[k] < 0) ? -mquant : mquant;
2636 if(use_pred) i = 63;
2637 } else { // no AC coeffs
2640 memset(ac_val2, 0, 16 * 2);
2641 if(dc_pred_dir) {//left
2643 memcpy(ac_val2, ac_val, 8 * 2);
2645 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2646 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2647 for(k = 1; k < 8; k++)
2648 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2653 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2655 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2656 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2657 for(k = 1; k < 8; k++)
2658 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2663 /* apply AC prediction if needed */
2665 if(dc_pred_dir) { //left
2666 for(k = 1; k < 8; k++) {
2667 block[k << 3] = ac_val2[k] * scale;
2668 if(!v->pquantizer && block[k << 3])
2669 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
2672 for(k = 1; k < 8; k++) {
2673 block[k] = ac_val2[k + 8] * scale;
2674 if(!v->pquantizer && block[k])
2675 block[k] += (block[k] < 0) ? -mquant : mquant;
2681 s->block_last_index[n] = i;
2686 /** Decode intra block in inter frames - more generic version than vc1_decode_i_block
2687 * @param v VC1Context
2688 * @param block block to decode
2689 * @param coded are AC coeffs present or not
2690 * @param mquant block quantizer
2691 * @param codingset set of VLC to decode data
2693 static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset)
2695 GetBitContext *gb = &v->s.gb;
2696 MpegEncContext *s = &v->s;
2697 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2700 int16_t *ac_val, *ac_val2;
2702 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2703 int a_avail = v->a_avail, c_avail = v->c_avail;
2704 int use_pred = s->ac_pred;
2708 /* XXX: Guard against dumb values of mquant */
2709 mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
2711 /* Set DC scale - y and c use the same */
2712 s->y_dc_scale = s->y_dc_scale_table[mquant];
2713 s->c_dc_scale = s->c_dc_scale_table[mquant];
2715 /* Get DC differential */
2717 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2719 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2722 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2727 if (dcdiff == 119 /* ESC index value */)
2729 /* TODO: Optimize */
2730 if (mquant == 1) dcdiff = get_bits(gb, 10);
2731 else if (mquant == 2) dcdiff = get_bits(gb, 9);
2732 else dcdiff = get_bits(gb, 8);
2737 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2738 else if (mquant == 2)
2739 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2746 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
2749 /* Store the quantized DC coeff, used for prediction */
2752 block[0] = dcdiff * s->y_dc_scale;
2754 block[0] = dcdiff * s->c_dc_scale;
2763 /* check if AC is needed at all and adjust direction if needed */
2764 if(!a_avail) dc_pred_dir = 1;
2765 if(!c_avail) dc_pred_dir = 0;
2766 if(!a_avail && !c_avail) use_pred = 0;
2767 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2770 scale = mquant * 2 + v->halfpq;
2772 if(dc_pred_dir) //left
2775 ac_val -= 16 * s->block_wrap[n];
2777 q1 = s->current_picture.qscale_table[mb_pos];
2778 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
2779 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2780 if(dc_pred_dir && n==1) q2 = q1;
2781 if(!dc_pred_dir && n==2) q2 = q1;
2785 int last = 0, skip, value;
2786 const int8_t *zz_table;
2789 zz_table = ff_vc1_simple_progressive_8x8_zz;
2792 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2796 block[zz_table[i++]] = value;
2799 /* apply AC prediction if needed */
2801 /* scale predictors if needed*/
2803 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2804 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2806 if(dc_pred_dir) { //left
2807 for(k = 1; k < 8; k++)
2808 block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2810 for(k = 1; k < 8; k++)
2811 block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2814 if(dc_pred_dir) { //left
2815 for(k = 1; k < 8; k++)
2816 block[k << 3] += ac_val[k];
2818 for(k = 1; k < 8; k++)
2819 block[k] += ac_val[k + 8];
2823 /* save AC coeffs for further prediction */
2824 for(k = 1; k < 8; k++) {
2825 ac_val2[k] = block[k << 3];
2826 ac_val2[k + 8] = block[k];
2829 /* scale AC coeffs */
2830 for(k = 1; k < 64; k++)
2834 block[k] += (block[k] < 0) ? -mquant : mquant;
2837 if(use_pred) i = 63;
2838 } else { // no AC coeffs
2841 memset(ac_val2, 0, 16 * 2);
2842 if(dc_pred_dir) {//left
2844 memcpy(ac_val2, ac_val, 8 * 2);
2846 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2847 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2848 for(k = 1; k < 8; k++)
2849 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2854 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2856 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2857 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2858 for(k = 1; k < 8; k++)
2859 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2864 /* apply AC prediction if needed */
2866 if(dc_pred_dir) { //left
2867 for(k = 1; k < 8; k++) {
2868 block[k << 3] = ac_val2[k] * scale;
2869 if(!v->pquantizer && block[k << 3])
2870 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
2873 for(k = 1; k < 8; k++) {
2874 block[k] = ac_val2[k + 8] * scale;
2875 if(!v->pquantizer && block[k])
2876 block[k] += (block[k] < 0) ? -mquant : mquant;
2882 s->block_last_index[n] = i;
2889 static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block)
2891 MpegEncContext *s = &v->s;
2892 GetBitContext *gb = &s->gb;
2895 int scale, off, idx, last, skip, value;
2896 int ttblk = ttmb & 7;
2899 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)];
2901 if(ttblk == TT_4X4) {
2902 subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
2904 if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) {
2905 subblkpat = decode012(gb);
2906 if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits
2907 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4;
2908 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8;
2910 scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0);
2912 // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
2913 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
2914 subblkpat = 2 - (ttblk == TT_8X4_TOP);
2917 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
2918 subblkpat = 2 - (ttblk == TT_4X8_LEFT);
2926 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2930 idx = ff_vc1_simple_progressive_8x8_zz[i++];
2931 block[idx] = value * scale;
2933 block[idx] += (block[idx] < 0) ? -mquant : mquant;
2935 s->dsp.vc1_inv_trans_8x8(block);
2938 for(j = 0; j < 4; j++) {
2939 last = subblkpat & (1 << (3 - j));
2941 off = (j & 1) * 4 + (j & 2) * 16;
2943 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2947 idx = ff_vc1_simple_progressive_4x4_zz[i++];
2948 block[idx + off] = value * scale;
2950 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2952 if(!(subblkpat & (1 << (3 - j))))
2953 s->dsp.vc1_inv_trans_4x4(block, j);
2957 for(j = 0; j < 2; j++) {
2958 last = subblkpat & (1 << (1 - j));
2962 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2966 if(v->profile < PROFILE_ADVANCED)
2967 idx = ff_vc1_simple_progressive_8x4_zz[i++];
2969 idx = ff_vc1_adv_progressive_8x4_zz[i++];
2970 block[idx + off] = value * scale;
2972 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2974 if(!(subblkpat & (1 << (1 - j))))
2975 s->dsp.vc1_inv_trans_8x4(block, j);
2979 for(j = 0; j < 2; j++) {
2980 last = subblkpat & (1 << (1 - j));
2984 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2988 if(v->profile < PROFILE_ADVANCED)
2989 idx = ff_vc1_simple_progressive_4x8_zz[i++];
2991 idx = ff_vc1_adv_progressive_4x8_zz[i++];
2992 block[idx + off] = value * scale;
2994 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2996 if(!(subblkpat & (1 << (1 - j))))
2997 s->dsp.vc1_inv_trans_4x8(block, j);
3005 /** Decode one P-frame MB (in Simple/Main profile)
3007 static int vc1_decode_p_mb(VC1Context *v)
3009 MpegEncContext *s = &v->s;
3010 GetBitContext *gb = &s->gb;
3012 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3013 int cbp; /* cbp decoding stuff */
3014 int mqdiff, mquant; /* MB quantization */
3015 int ttmb = v->ttfrm; /* MB Transform type */
3018 static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
3019 offset_table[6] = { 0, 1, 3, 7, 15, 31 };
3020 int mb_has_coeffs = 1; /* last_flag */
3021 int dmv_x, dmv_y; /* Differential MV components */
3022 int index, index1; /* LUT indices */
3023 int val, sign; /* temp values */
3024 int first_block = 1;
3026 int skipped, fourmv;
3028 mquant = v->pq; /* Loosy initialization */
3030 if (v->mv_type_is_raw)
3031 fourmv = get_bits1(gb);
3033 fourmv = v->mv_type_mb_plane[mb_pos];
3035 skipped = get_bits1(gb);
3037 skipped = v->s.mbskip_table[mb_pos];
3039 s->dsp.clear_blocks(s->block[0]);
3041 if (!fourmv) /* 1MV mode */
3045 GET_MVDATA(dmv_x, dmv_y);
3048 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3049 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3051 s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
3052 vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]);
3054 /* FIXME Set DC val for inter block ? */
3055 if (s->mb_intra && !mb_has_coeffs)
3058 s->ac_pred = get_bits1(gb);
3061 else if (mb_has_coeffs)
3063 if (s->mb_intra) s->ac_pred = get_bits1(gb);
3064 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3072 s->current_picture.qscale_table[mb_pos] = mquant;
3074 if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
3075 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
3076 VC1_TTMB_VLC_BITS, 2);
3077 if(!s->mb_intra) vc1_mc_1mv(v, 0);
3081 s->dc_val[0][s->block_index[i]] = 0;
3083 val = ((cbp >> (5 - i)) & 1);
3084 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3085 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3087 /* check if prediction blocks A and C are available */
3088 v->a_avail = v->c_avail = 0;
3089 if(i == 2 || i == 3 || !s->first_slice_line)
3090 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3091 if(i == 1 || i == 3 || s->mb_x)
3092 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3094 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
3095 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3096 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3097 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3098 for(j = 0; j < 64; j++) s->block[i][j] += 128;
3099 if(!v->res_fasttx && v->res_x8) for(j = 0; j < 64; j++) s->block[i][j] += 16;
3100 s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3101 if(v->pq >= 9 && v->overlap) {
3103 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3105 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3108 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3109 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3111 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3112 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3119 for(i = 0; i < 6; i++) {
3120 v->mb_type[0][s->block_index[i]] = 0;
3121 s->dc_val[0][s->block_index[i]] = 0;
3123 s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
3124 s->current_picture.qscale_table[mb_pos] = 0;
3125 vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
3132 if (!skipped /* unskipped MB */)
3134 int intra_count = 0, coded_inter = 0;
3135 int is_intra[6], is_coded[6];
3137 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3140 val = ((cbp >> (5 - i)) & 1);
3141 s->dc_val[0][s->block_index[i]] = 0;
3148 GET_MVDATA(dmv_x, dmv_y);
3150 vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
3151 if(!s->mb_intra) vc1_mc_4mv_luma(v, i);
3152 intra_count += s->mb_intra;
3153 is_intra[i] = s->mb_intra;
3154 is_coded[i] = mb_has_coeffs;
3157 is_intra[i] = (intra_count >= 3);
3160 if(i == 4) vc1_mc_4mv_chroma(v);
3161 v->mb_type[0][s->block_index[i]] = is_intra[i];
3162 if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i];
3164 // if there are no coded blocks then don't do anything more
3165 if(!intra_count && !coded_inter) return 0;
3168 s->current_picture.qscale_table[mb_pos] = mquant;
3169 /* test if block is intra and has pred */
3174 if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
3175 || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
3180 if(intrapred)s->ac_pred = get_bits1(gb);
3181 else s->ac_pred = 0;
3183 if (!v->ttmbf && coded_inter)
3184 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3188 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3189 s->mb_intra = is_intra[i];
3191 /* check if prediction blocks A and C are available */
3192 v->a_avail = v->c_avail = 0;
3193 if(i == 2 || i == 3 || !s->first_slice_line)
3194 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3195 if(i == 1 || i == 3 || s->mb_x)
3196 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3198 vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset);
3199 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3200 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3201 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3202 for(j = 0; j < 64; j++) s->block[i][j] += 128;
3203 if(!v->res_fasttx && v->res_x8) for(j = 0; j < 64; j++) s->block[i][j] += 16;
3204 s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3205 if(v->pq >= 9 && v->overlap) {
3207 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3209 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3211 } else if(is_coded[i]) {
3212 status = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3213 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3215 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3216 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3224 s->current_picture.qscale_table[mb_pos] = 0;
3225 for (i=0; i<6; i++) {
3226 v->mb_type[0][s->block_index[i]] = 0;
3227 s->dc_val[0][s->block_index[i]] = 0;
3231 vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]);
3232 vc1_mc_4mv_luma(v, i);
3234 vc1_mc_4mv_chroma(v);
3235 s->current_picture.qscale_table[mb_pos] = 0;
3240 /* Should never happen */
3244 /** Decode one B-frame MB (in Main profile)
3246 static void vc1_decode_b_mb(VC1Context *v)
3248 MpegEncContext *s = &v->s;
3249 GetBitContext *gb = &s->gb;
3251 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3252 int cbp = 0; /* cbp decoding stuff */
3253 int mqdiff, mquant; /* MB quantization */
3254 int ttmb = v->ttfrm; /* MB Transform type */
3256 static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
3257 offset_table[6] = { 0, 1, 3, 7, 15, 31 };
3258 int mb_has_coeffs = 0; /* last_flag */
3259 int index, index1; /* LUT indices */
3260 int val, sign; /* temp values */
3261 int first_block = 1;
3263 int skipped, direct;
3264 int dmv_x[2], dmv_y[2];
3265 int bmvtype = BMV_TYPE_BACKWARD;
3267 mquant = v->pq; /* Loosy initialization */
3271 direct = get_bits1(gb);
3273 direct = v->direct_mb_plane[mb_pos];
3275 skipped = get_bits1(gb);
3277 skipped = v->s.mbskip_table[mb_pos];
3279 s->dsp.clear_blocks(s->block[0]);
3280 dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
3281 for(i = 0; i < 6; i++) {
3282 v->mb_type[0][s->block_index[i]] = 0;
3283 s->dc_val[0][s->block_index[i]] = 0;
3285 s->current_picture.qscale_table[mb_pos] = 0;
3289 GET_MVDATA(dmv_x[0], dmv_y[0]);
3290 dmv_x[1] = dmv_x[0];
3291 dmv_y[1] = dmv_y[0];
3293 if(skipped || !s->mb_intra) {
3294 bmvtype = decode012(gb);
3297 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
3300 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
3303 bmvtype = BMV_TYPE_INTERPOLATED;
3304 dmv_x[0] = dmv_y[0] = 0;
3308 for(i = 0; i < 6; i++)
3309 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3312 if(direct) bmvtype = BMV_TYPE_INTERPOLATED;
3313 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3314 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3318 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3322 s->current_picture.qscale_table[mb_pos] = mquant;
3324 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3325 dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
3326 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3327 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3329 if(!mb_has_coeffs && !s->mb_intra) {
3330 /* no coded blocks - effectively skipped */
3331 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3332 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3335 if(s->mb_intra && !mb_has_coeffs) {
3337 s->current_picture.qscale_table[mb_pos] = mquant;
3338 s->ac_pred = get_bits1(gb);
3340 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3342 if(bmvtype == BMV_TYPE_INTERPOLATED) {
3343 GET_MVDATA(dmv_x[0], dmv_y[0]);
3344 if(!mb_has_coeffs) {
3345 /* interpolated skipped block */
3346 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3347 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3351 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3353 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3356 s->ac_pred = get_bits1(gb);
3357 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3359 s->current_picture.qscale_table[mb_pos] = mquant;
3360 if(!v->ttmbf && !s->mb_intra && mb_has_coeffs)
3361 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3367 s->dc_val[0][s->block_index[i]] = 0;
3369 val = ((cbp >> (5 - i)) & 1);
3370 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3371 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3373 /* check if prediction blocks A and C are available */
3374 v->a_avail = v->c_avail = 0;
3375 if(i == 2 || i == 3 || !s->first_slice_line)
3376 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3377 if(i == 1 || i == 3 || s->mb_x)
3378 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3380 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
3381 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3382 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3383 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3384 for(j = 0; j < 64; j++) s->block[i][j] += 128;
3385 s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3387 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3388 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3390 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3391 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3396 /** Decode blocks of I-frame
3398 static void vc1_decode_i_blocks(VC1Context *v)
3401 MpegEncContext *s = &v->s;
3406 /* select codingmode used for VLC tables selection */
3407 switch(v->y_ac_table_index){
3409 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3412 v->codingset = CS_HIGH_MOT_INTRA;
3415 v->codingset = CS_MID_RATE_INTRA;
3419 switch(v->c_ac_table_index){
3421 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3424 v->codingset2 = CS_HIGH_MOT_INTER;
3427 v->codingset2 = CS_MID_RATE_INTER;
3431 /* Set DC scale - y and c use the same */
3432 s->y_dc_scale = s->y_dc_scale_table[v->pq];
3433 s->c_dc_scale = s->c_dc_scale_table[v->pq];
3436 s->mb_x = s->mb_y = 0;
3438 s->first_slice_line = 1;
3439 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3440 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3441 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3442 ff_init_block_index(s);
3443 ff_update_block_index(s);
3444 s->dsp.clear_blocks(s->block[0]);
3445 mb_pos = s->mb_x + s->mb_y * s->mb_width;
3446 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
3447 s->current_picture.qscale_table[mb_pos] = v->pq;
3448 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3449 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3451 // do actual MB decoding and displaying
3452 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
3453 v->s.ac_pred = get_bits1(&v->s.gb);
3455 for(k = 0; k < 6; k++) {
3456 val = ((cbp >> (5 - k)) & 1);
3459 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
3463 cbp |= val << (5 - k);
3465 vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
3467 s->dsp.vc1_inv_trans_8x8(s->block[k]);
3468 if(!v->res_fasttx && !v->res_x8) for(j = 0; j < 64; j++) s->block[k][j] -= 16;
3469 if(v->pq >= 9 && v->overlap) {
3470 for(j = 0; j < 64; j++) s->block[k][j] += 128;
3474 vc1_put_block(v, s->block);
3475 if(v->pq >= 9 && v->overlap) {
3477 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
3478 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3479 if(!(s->flags & CODEC_FLAG_GRAY)) {
3480 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
3481 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
3484 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
3485 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3486 if(!s->first_slice_line) {
3487 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
3488 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
3489 if(!(s->flags & CODEC_FLAG_GRAY)) {
3490 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
3491 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
3494 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3495 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3498 if(get_bits_count(&s->gb) > v->bits) {
3499 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
3503 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3504 s->first_slice_line = 0;
3508 /** Decode blocks of I-frame for advanced profile
3510 static void vc1_decode_i_blocks_adv(VC1Context *v)
3513 MpegEncContext *s = &v->s;
3520 GetBitContext *gb = &s->gb;
3522 /* select codingmode used for VLC tables selection */
3523 switch(v->y_ac_table_index){
3525 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3528 v->codingset = CS_HIGH_MOT_INTRA;
3531 v->codingset = CS_MID_RATE_INTRA;
3535 switch(v->c_ac_table_index){
3537 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3540 v->codingset2 = CS_HIGH_MOT_INTER;
3543 v->codingset2 = CS_MID_RATE_INTER;
3548 s->mb_x = s->mb_y = 0;
3550 s->first_slice_line = 1;
3551 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3552 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3553 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3554 ff_init_block_index(s);
3555 ff_update_block_index(s);
3556 s->dsp.clear_blocks(s->block[0]);
3557 mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3558 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
3559 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3560 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3562 // do actual MB decoding and displaying
3563 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
3564 if(v->acpred_is_raw)
3565 v->s.ac_pred = get_bits1(&v->s.gb);
3567 v->s.ac_pred = v->acpred_plane[mb_pos];
3569 if(v->condover == CONDOVER_SELECT) {
3570 if(v->overflg_is_raw)
3571 overlap = get_bits1(&v->s.gb);
3573 overlap = v->over_flags_plane[mb_pos];
3575 overlap = (v->condover == CONDOVER_ALL);
3579 s->current_picture.qscale_table[mb_pos] = mquant;
3580 /* Set DC scale - y and c use the same */
3581 s->y_dc_scale = s->y_dc_scale_table[mquant];
3582 s->c_dc_scale = s->c_dc_scale_table[mquant];
3584 for(k = 0; k < 6; k++) {
3585 val = ((cbp >> (5 - k)) & 1);
3588 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
3592 cbp |= val << (5 - k);
3594 v->a_avail = !s->first_slice_line || (k==2 || k==3);
3595 v->c_avail = !!s->mb_x || (k==1 || k==3);
3597 vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant);
3599 s->dsp.vc1_inv_trans_8x8(s->block[k]);
3600 for(j = 0; j < 64; j++) s->block[k][j] += 128;
3603 vc1_put_block(v, s->block);
3606 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
3607 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3608 if(!(s->flags & CODEC_FLAG_GRAY)) {
3609 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
3610 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
3613 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
3614 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3615 if(!s->first_slice_line) {
3616 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
3617 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
3618 if(!(s->flags & CODEC_FLAG_GRAY)) {
3619 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
3620 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
3623 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3624 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3627 if(get_bits_count(&s->gb) > v->bits) {
3628 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
3632 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3633 s->first_slice_line = 0;
3637 static void vc1_decode_p_blocks(VC1Context *v)
3639 MpegEncContext *s = &v->s;
3641 /* select codingmode used for VLC tables selection */
3642 switch(v->c_ac_table_index){
3644 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3647 v->codingset = CS_HIGH_MOT_INTRA;
3650 v->codingset = CS_MID_RATE_INTRA;
3654 switch(v->c_ac_table_index){
3656 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3659 v->codingset2 = CS_HIGH_MOT_INTER;
3662 v->codingset2 = CS_MID_RATE_INTER;
3666 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3667 s->first_slice_line = 1;
3668 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3669 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3670 ff_init_block_index(s);
3671 ff_update_block_index(s);
3672 s->dsp.clear_blocks(s->block[0]);
3675 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
3676 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);
3680 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3681 s->first_slice_line = 0;
3685 static void vc1_decode_b_blocks(VC1Context *v)
3687 MpegEncContext *s = &v->s;
3689 /* select codingmode used for VLC tables selection */
3690 switch(v->c_ac_table_index){
3692 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3695 v->codingset = CS_HIGH_MOT_INTRA;
3698 v->codingset = CS_MID_RATE_INTRA;
3702 switch(v->c_ac_table_index){
3704 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3707 v->codingset2 = CS_HIGH_MOT_INTER;
3710 v->codingset2 = CS_MID_RATE_INTER;
3714 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3715 s->first_slice_line = 1;
3716 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3717 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3718 ff_init_block_index(s);
3719 ff_update_block_index(s);
3720 s->dsp.clear_blocks(s->block[0]);
3723 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
3724 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);
3728 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3729 s->first_slice_line = 0;
3733 static void vc1_decode_skip_blocks(VC1Context *v)
3735 MpegEncContext *s = &v->s;
3737 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3738 s->first_slice_line = 1;
3739 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3741 ff_init_block_index(s);
3742 ff_update_block_index(s);
3743 memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
3744 memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
3745 memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
3746 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3747 s->first_slice_line = 0;
3749 s->pict_type = P_TYPE;
3752 static void vc1_decode_blocks(VC1Context *v)
3755 v->s.esc3_level_length = 0;
3757 switch(v->s.pict_type) {
3759 if(v->profile == PROFILE_ADVANCED)
3760 vc1_decode_i_blocks_adv(v);
3762 vc1_decode_i_blocks(v);
3765 if(v->p_frame_skipped)
3766 vc1_decode_skip_blocks(v);
3768 vc1_decode_p_blocks(v);
3772 if(v->profile == PROFILE_ADVANCED)
3773 vc1_decode_i_blocks_adv(v);
3775 vc1_decode_i_blocks(v);
3777 vc1_decode_b_blocks(v);
3782 /** Find VC-1 marker in buffer
3783 * @return position where next marker starts or end of buffer if no marker found
3785 static av_always_inline uint8_t* find_next_marker(uint8_t *src, uint8_t *end)
3787 uint32_t mrk = 0xFFFFFFFF;
3789 if(end-src < 4) return end;
3791 mrk = (mrk << 8) | *src++;
3798 static av_always_inline int vc1_unescape_buffer(uint8_t *src, int size, uint8_t *dst)
3803 for(dsize = 0; dsize < size; dsize++) *dst++ = *src++;
3806 for(i = 0; i < size; i++, src++) {
3807 if(src[0] == 3 && i >= 2 && !src[-1] && !src[-2] && i < size-1 && src[1] < 4) {
3808 dst[dsize++] = src[1];
3812 dst[dsize++] = *src;
3817 /** Initialize a VC1/WMV3 decoder
3818 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3819 * @todo TODO: Decypher remaining bits in extra_data
3821 static int vc1_decode_init(AVCodecContext *avctx)
3823 VC1Context *v = avctx->priv_data;
3824 MpegEncContext *s = &v->s;
3827 if (!avctx->extradata_size || !avctx->extradata) return -1;
3828 if (!(avctx->flags & CODEC_FLAG_GRAY))
3829 avctx->pix_fmt = PIX_FMT_YUV420P;
3831 avctx->pix_fmt = PIX_FMT_GRAY8;
3833 avctx->flags |= CODEC_FLAG_EMU_EDGE;
3834 v->s.flags |= CODEC_FLAG_EMU_EDGE;
3836 if(ff_h263_decode_init(avctx) < 0)
3838 if (vc1_init_common(v) < 0) return -1;
3840 avctx->coded_width = avctx->width;
3841 avctx->coded_height = avctx->height;
3842 if (avctx->codec_id == CODEC_ID_WMV3)
3846 // looks like WMV3 has a sequence header stored in the extradata
3847 // advanced sequence header may be before the first frame
3848 // the last byte of the extradata is a version number, 1 for the
3849 // samples we can decode
3851 init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
3853 if (decode_sequence_header(avctx, &gb) < 0)
3856 count = avctx->extradata_size*8 - get_bits_count(&gb);
3859 av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
3860 count, get_bits(&gb, count));
3864 av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
3866 } else { // VC1/WVC1
3867 uint8_t *start = avctx->extradata, *end = avctx->extradata + avctx->extradata_size;
3868 uint8_t *next; int size, buf2_size;
3869 uint8_t *buf2 = NULL;
3870 int seq_inited = 0, ep_inited = 0;
3872 if(avctx->extradata_size < 16) {
3873 av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
3877 buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
3878 if(start[0]) start++; // in WVC1 extradata first byte is its size
3880 for(; next < end; start = next){
3881 next = find_next_marker(start + 4, end);
3882 size = next - start - 4;
3883 if(size <= 0) continue;
3884 buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
3885 init_get_bits(&gb, buf2, buf2_size * 8);
3886 switch(AV_RB32(start)){
3887 case VC1_CODE_SEQHDR:
3888 if(decode_sequence_header(avctx, &gb) < 0){
3894 case VC1_CODE_ENTRYPOINT:
3895 if(decode_entry_point(avctx, &gb) < 0){
3904 if(!seq_inited || !ep_inited){
3905 av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
3909 avctx->has_b_frames= !!(avctx->max_b_frames);
3910 s->low_delay = !avctx->has_b_frames;
3912 s->mb_width = (avctx->coded_width+15)>>4;
3913 s->mb_height = (avctx->coded_height+15)>>4;
3915 /* Allocate mb bitplanes */
3916 v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3917 v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3918 v->acpred_plane = av_malloc(s->mb_stride * s->mb_height);
3919 v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height);
3921 /* allocate block type info in that way so it could be used with s->block_index[] */
3922 v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
3923 v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
3924 v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1;
3925 v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1);
3927 /* Init coded blocks info */
3928 if (v->profile == PROFILE_ADVANCED)
3930 // if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
3932 // if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
3940 /** Decode a VC1/WMV3 frame
3941 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3943 static int vc1_decode_frame(AVCodecContext *avctx,
3944 void *data, int *data_size,
3945 uint8_t *buf, int buf_size)
3947 VC1Context *v = avctx->priv_data;
3948 MpegEncContext *s = &v->s;
3949 AVFrame *pict = data;
3950 uint8_t *buf2 = NULL;
3952 /* no supplementary picture */
3953 if (buf_size == 0) {
3954 /* special case for last picture */
3955 if (s->low_delay==0 && s->next_picture_ptr) {
3956 *pict= *(AVFrame*)s->next_picture_ptr;
3957 s->next_picture_ptr= NULL;
3959 *data_size = sizeof(AVFrame);
3965 /* We need to set current_picture_ptr before reading the header,
3966 * otherwise we cannot store anything in there. */
3967 if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
3968 int i= ff_find_unused_picture(s, 0);
3969 s->current_picture_ptr= &s->picture[i];
3972 //for advanced profile we may need to parse and unescape data
3973 if (avctx->codec_id == CODEC_ID_VC1) {
3975 buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
3977 if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
3978 uint8_t *start, *end, *next;
3982 for(start = buf, end = buf + buf_size; next < end; start = next){
3983 next = find_next_marker(start + 4, end);
3984 size = next - start - 4;
3985 if(size <= 0) continue;
3986 switch(AV_RB32(start)){
3987 case VC1_CODE_FRAME:
3988 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
3990 case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
3991 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
3992 init_get_bits(&s->gb, buf2, buf_size2*8);
3993 decode_entry_point(avctx, &s->gb);
3995 case VC1_CODE_SLICE:
3996 av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n");
4001 }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
4004 divider = find_next_marker(buf, buf + buf_size);
4005 if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
4006 av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
4010 buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
4012 av_free(buf2);return -1;
4014 buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
4016 init_get_bits(&s->gb, buf2, buf_size2*8);
4018 init_get_bits(&s->gb, buf, buf_size*8);
4019 // do parse frame header
4020 if(v->profile < PROFILE_ADVANCED) {
4021 if(vc1_parse_frame_header(v, &s->gb) == -1) {
4026 if(vc1_parse_frame_header_adv(v, &s->gb) == -1) {
4032 if(s->pict_type != I_TYPE && !v->res_rtm_flag){
4038 s->current_picture.pict_type= s->pict_type;
4039 s->current_picture.key_frame= s->pict_type == I_TYPE;
4041 /* skip B-frames if we don't have reference frames */
4042 if(s->last_picture_ptr==NULL && (s->pict_type==B_TYPE || s->dropable)){
4044 return -1;//buf_size;
4046 /* skip b frames if we are in a hurry */
4047 if(avctx->hurry_up && s->pict_type==B_TYPE) return -1;//buf_size;
4048 if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==B_TYPE)
4049 || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=I_TYPE)
4050 || avctx->skip_frame >= AVDISCARD_ALL) {
4054 /* skip everything if we are in a hurry>=5 */
4055 if(avctx->hurry_up>=5) {
4057 return -1;//buf_size;
4060 if(s->next_p_frame_damaged){
4061 if(s->pict_type==B_TYPE)
4064 s->next_p_frame_damaged=0;
4067 if(MPV_frame_start(s, avctx) < 0) {
4072 ff_er_frame_start(s);
4074 v->bits = buf_size * 8;
4075 vc1_decode_blocks(v);
4076 //av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8);
4077 // if(get_bits_count(&s->gb) > buf_size * 8)
4083 assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
4084 assert(s->current_picture.pict_type == s->pict_type);
4085 if (s->pict_type == B_TYPE || s->low_delay) {
4086 *pict= *(AVFrame*)s->current_picture_ptr;
4087 } else if (s->last_picture_ptr != NULL) {
4088 *pict= *(AVFrame*)s->last_picture_ptr;
4091 if(s->last_picture_ptr || s->low_delay){
4092 *data_size = sizeof(AVFrame);
4093 ff_print_debug_info(s, pict);
4096 /* Return the Picture timestamp as the frame number */
4097 /* we substract 1 because it is added on utils.c */
4098 avctx->frame_number = s->picture_number - 1;
4105 /** Close a VC1/WMV3 decoder
4106 * @warning Initial try at using MpegEncContext stuff
4108 static int vc1_decode_end(AVCodecContext *avctx)
4110 VC1Context *v = avctx->priv_data;
4112 av_freep(&v->hrd_rate);
4113 av_freep(&v->hrd_buffer);
4114 MPV_common_end(&v->s);
4115 av_freep(&v->mv_type_mb_plane);
4116 av_freep(&v->direct_mb_plane);
4117 av_freep(&v->acpred_plane);
4118 av_freep(&v->over_flags_plane);
4119 av_freep(&v->mb_type_base);
4124 AVCodec vc1_decoder = {
4137 AVCodec wmv3_decoder = {