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
26 * VC-1 and WMV3 decoder
32 #include "mpegvideo.h"
35 #include "vc1acdata.h"
40 extern const uint32_t ff_table0_dc_lum[120][2], ff_table1_dc_lum[120][2];
41 extern const uint32_t ff_table0_dc_chroma[120][2], ff_table1_dc_chroma[120][2];
42 extern VLC ff_msmp4_dc_luma_vlc[2], ff_msmp4_dc_chroma_vlc[2];
43 #define MB_INTRA_VLC_BITS 9
44 extern VLC ff_msmp4_mb_i_vlc;
45 extern const uint16_t ff_msmp4_mb_i_table[64][2];
48 static const uint16_t table_mb_intra[64][2];
52 * Get unary code of limited length
53 * @fixme FIXME Slow and ugly
54 * @param gb GetBitContext
55 * @param[in] stop The bitstop value (unary code of 1's or 0's)
56 * @param[in] len Maximum length
57 * @return Unary length/index
59 static int get_prefix(GetBitContext *gb, int stop, int len)
64 for(i = 0; i < len && get_bits1(gb) != stop; i++);
66 /* int i = 0, tmp = !stop;
68 while (i != len && tmp != stop)
70 tmp = get_bits(gb, 1);
73 if (i == len && tmp != stop) return len+1;
81 buf=GET_CACHE(re, gb); //Still not sure
84 log= av_log2(-buf); //FIXME: -?
86 LAST_SKIP_BITS(re, gb, log+1);
91 LAST_SKIP_BITS(re, gb, limit);
97 static inline int decode210(GetBitContext *gb){
103 return 2 - get_bits1(gb);
107 * Init VC-1 specific tables and VC1Context members
108 * @param v The VC1Context to initialize
111 static int vc1_init_common(VC1Context *v)
116 v->hrd_rate = v->hrd_buffer = NULL;
122 init_vlc(&vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
123 vc1_bfraction_bits, 1, 1,
124 vc1_bfraction_codes, 1, 1, 1);
125 init_vlc(&vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
126 vc1_norm2_bits, 1, 1,
127 vc1_norm2_codes, 1, 1, 1);
128 init_vlc(&vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
129 vc1_norm6_bits, 1, 1,
130 vc1_norm6_codes, 2, 2, 1);
131 init_vlc(&vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
132 vc1_imode_bits, 1, 1,
133 vc1_imode_codes, 1, 1, 1);
136 init_vlc(&vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
137 vc1_ttmb_bits[i], 1, 1,
138 vc1_ttmb_codes[i], 2, 2, 1);
139 init_vlc(&vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
140 vc1_ttblk_bits[i], 1, 1,
141 vc1_ttblk_codes[i], 1, 1, 1);
142 init_vlc(&vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
143 vc1_subblkpat_bits[i], 1, 1,
144 vc1_subblkpat_codes[i], 1, 1, 1);
148 init_vlc(&vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
149 vc1_4mv_block_pattern_bits[i], 1, 1,
150 vc1_4mv_block_pattern_codes[i], 1, 1, 1);
151 init_vlc(&vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
152 vc1_cbpcy_p_bits[i], 1, 1,
153 vc1_cbpcy_p_codes[i], 2, 2, 1);
154 init_vlc(&vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
155 vc1_mv_diff_bits[i], 1, 1,
156 vc1_mv_diff_codes[i], 2, 2, 1);
159 init_vlc(&vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i],
160 &vc1_ac_tables[i][0][1], 8, 4,
161 &vc1_ac_tables[i][0][0], 8, 4, 1);
162 init_vlc(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64,
163 &ff_msmp4_mb_i_table[0][1], 4, 2,
164 &ff_msmp4_mb_i_table[0][0], 4, 2, 1);
169 v->mvrange = 0; /* 7.1.1.18, p80 */
174 /***********************************************************************/
176 * @defgroup bitplane VC9 Bitplane decoding
181 /** @addtogroup bitplane
194 /** @} */ //imode defines
196 /** Decode rows by checking if they are skipped
197 * @param plane Buffer to store decoded bits
198 * @param[in] width Width of this buffer
199 * @param[in] height Height of this buffer
200 * @param[in] stride of this buffer
202 static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
205 for (y=0; y<height; y++){
206 if (!get_bits(gb, 1)) //rowskip
207 memset(plane, 0, width);
209 for (x=0; x<width; x++)
210 plane[x] = get_bits(gb, 1);
215 /** Decode columns by checking if they are skipped
216 * @param plane Buffer to store decoded bits
217 * @param[in] width Width of this buffer
218 * @param[in] height Height of this buffer
219 * @param[in] stride of this buffer
220 * @fixme FIXME: Optimize
222 static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
225 for (x=0; x<width; x++){
226 if (!get_bits(gb, 1)) //colskip
227 for (y=0; y<height; y++)
230 for (y=0; y<height; y++)
231 plane[y*stride] = get_bits(gb, 1);
236 /** Decode a bitplane's bits
237 * @param bp Bitplane where to store the decode bits
238 * @param v VC-1 context for bit reading and logging
240 * @fixme FIXME: Optimize
242 static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
244 GetBitContext *gb = &v->s.gb;
246 int imode, x, y, code, offset;
247 uint8_t invert, *planep = data;
248 int width, height, stride;
250 width = v->s.mb_width;
251 height = v->s.mb_height;
252 stride = v->s.mb_stride;
253 invert = get_bits(gb, 1);
254 imode = get_vlc2(gb, vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);
260 //Data is actually read in the MB layer (same for all tests == "raw")
261 *raw_flag = 1; //invert ignored
265 if ((height * width) & 1)
267 *planep++ = get_bits(gb, 1);
271 // decode bitplane as one long line
272 for (y = offset; y < height * width; y += 2) {
273 code = get_vlc2(gb, vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);
274 *planep++ = code & 1;
276 if(offset == width) {
278 planep += stride - width;
280 *planep++ = code >> 1;
282 if(offset == width) {
284 planep += stride - width;
290 if(!(height % 3) && (width % 3)) { // use 2x3 decoding
291 for(y = 0; y < height; y+= 3) {
292 for(x = width & 1; x < width; x += 2) {
293 code = get_vlc2(gb, vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
295 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
298 planep[x + 0] = (code >> 0) & 1;
299 planep[x + 1] = (code >> 1) & 1;
300 planep[x + 0 + stride] = (code >> 2) & 1;
301 planep[x + 1 + stride] = (code >> 3) & 1;
302 planep[x + 0 + stride * 2] = (code >> 4) & 1;
303 planep[x + 1 + stride * 2] = (code >> 5) & 1;
305 planep += stride * 3;
307 if(width & 1) decode_colskip(data, 1, height, stride, &v->s.gb);
309 planep += (height & 1) * stride;
310 for(y = height & 1; y < height; y += 2) {
311 for(x = width % 3; x < width; x += 3) {
312 code = get_vlc2(gb, vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
314 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
317 planep[x + 0] = (code >> 0) & 1;
318 planep[x + 1] = (code >> 1) & 1;
319 planep[x + 2] = (code >> 2) & 1;
320 planep[x + 0 + stride] = (code >> 3) & 1;
321 planep[x + 1 + stride] = (code >> 4) & 1;
322 planep[x + 2 + stride] = (code >> 5) & 1;
324 planep += stride * 2;
327 if(x) decode_colskip(data , x, height , stride, &v->s.gb);
328 if(height & 1) decode_rowskip(data+x, width - x, 1, stride, &v->s.gb);
332 decode_rowskip(data, width, height, stride, &v->s.gb);
335 decode_colskip(data, width, height, stride, &v->s.gb);
340 /* Applying diff operator */
341 if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6)
345 for (x=1; x<width; x++)
346 planep[x] ^= planep[x-1];
347 for (y=1; y<height; y++)
350 planep[0] ^= planep[-stride];
351 for (x=1; x<width; x++)
353 if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
354 else planep[x] ^= planep[x-1];
361 for (x=0; x<stride*height; x++) planep[x] = !planep[x]; //FIXME stride
363 return (imode<<1) + invert;
366 /** @} */ //Bitplane group
368 /***********************************************************************/
369 /** VOP Dquant decoding
370 * @param v VC-1 Context
372 static int vop_dquant_decoding(VC1Context *v)
374 GetBitContext *gb = &v->s.gb;
380 pqdiff = get_bits(gb, 3);
381 if (pqdiff == 7) v->altpq = get_bits(gb, 5);
382 else v->altpq = v->pq + pqdiff + 1;
386 v->dquantfrm = get_bits(gb, 1);
389 v->dqprofile = get_bits(gb, 2);
390 switch (v->dqprofile)
392 case DQPROFILE_SINGLE_EDGE:
393 case DQPROFILE_DOUBLE_EDGES:
394 v->dqsbedge = get_bits(gb, 2);
396 case DQPROFILE_ALL_MBS:
397 v->dqbilevel = get_bits(gb, 1);
398 default: break; //Forbidden ?
400 if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS)
402 pqdiff = get_bits(gb, 3);
403 if (pqdiff == 7) v->altpq = get_bits(gb, 5);
404 else v->altpq = v->pq + pqdiff + 1;
411 /** Put block onto picture
413 static void vc1_put_block(VC1Context *v, DCTELEM block[6][64])
417 DSPContext *dsp = &v->s.dsp;
421 for(k = 0; k < 6; k++)
422 for(j = 0; j < 8; j++)
423 for(i = 0; i < 8; i++)
424 block[k][i + j*8] = ((block[k][i + j*8] - 128) << 1) + 128;
427 ys = v->s.current_picture.linesize[0];
428 us = v->s.current_picture.linesize[1];
429 vs = v->s.current_picture.linesize[2];
432 dsp->put_pixels_clamped(block[0], Y, ys);
433 dsp->put_pixels_clamped(block[1], Y + 8, ys);
435 dsp->put_pixels_clamped(block[2], Y, ys);
436 dsp->put_pixels_clamped(block[3], Y + 8, ys);
438 if(!(v->s.flags & CODEC_FLAG_GRAY)) {
439 dsp->put_pixels_clamped(block[4], v->s.dest[1], us);
440 dsp->put_pixels_clamped(block[5], v->s.dest[2], vs);
444 /** Do motion compensation over 1 macroblock
445 * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
447 static void vc1_mc_1mv(VC1Context *v, int dir)
449 MpegEncContext *s = &v->s;
450 DSPContext *dsp = &v->s.dsp;
451 uint8_t *srcY, *srcU, *srcV;
452 int dxy, uvdxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
454 if(!v->s.last_picture.data[0])return;
456 mx = s->mv[dir][0][0];
457 my = s->mv[dir][0][1];
459 // store motion vectors for further use in B frames
460 if(s->pict_type == P_TYPE) {
461 s->current_picture.motion_val[1][s->block_index[0]][0] = mx;
462 s->current_picture.motion_val[1][s->block_index[0]][1] = my;
464 uvmx = (mx + ((mx & 3) == 3)) >> 1;
465 uvmy = (my + ((my & 3) == 3)) >> 1;
467 uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
468 uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
471 srcY = s->last_picture.data[0];
472 srcU = s->last_picture.data[1];
473 srcV = s->last_picture.data[2];
475 srcY = s->next_picture.data[0];
476 srcU = s->next_picture.data[1];
477 srcV = s->next_picture.data[2];
480 src_x = s->mb_x * 16 + (mx >> 2);
481 src_y = s->mb_y * 16 + (my >> 2);
482 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
483 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
485 if(v->profile != PROFILE_ADVANCED){
486 src_x = av_clip( src_x, -16, s->mb_width * 16);
487 src_y = av_clip( src_y, -16, s->mb_height * 16);
488 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
489 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
491 src_x = av_clip( src_x, -17, s->avctx->coded_width);
492 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
493 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
494 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
497 srcY += src_y * s->linesize + src_x;
498 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
499 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
501 /* for grayscale we should not try to read from unknown area */
502 if(s->flags & CODEC_FLAG_GRAY) {
503 srcU = s->edge_emu_buffer + 18 * s->linesize;
504 srcV = s->edge_emu_buffer + 18 * s->linesize;
507 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
508 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
509 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
510 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
512 srcY -= s->mspel * (1 + s->linesize);
513 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
514 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
515 srcY = s->edge_emu_buffer;
516 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
517 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
518 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
519 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
522 /* if we deal with range reduction we need to scale source blocks */
528 for(j = 0; j < 17 + s->mspel*2; j++) {
529 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
532 src = srcU; src2 = srcV;
533 for(j = 0; j < 9; j++) {
534 for(i = 0; i < 9; i++) {
535 src[i] = ((src[i] - 128) >> 1) + 128;
536 src2[i] = ((src2[i] - 128) >> 1) + 128;
538 src += s->uvlinesize;
539 src2 += s->uvlinesize;
542 /* if we deal with intensity compensation we need to scale source blocks */
543 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
548 for(j = 0; j < 17 + s->mspel*2; j++) {
549 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = v->luty[src[i]];
552 src = srcU; src2 = srcV;
553 for(j = 0; j < 9; j++) {
554 for(i = 0; i < 9; i++) {
555 src[i] = v->lutuv[src[i]];
556 src2[i] = v->lutuv[src2[i]];
558 src += s->uvlinesize;
559 src2 += s->uvlinesize;
562 srcY += s->mspel * (1 + s->linesize);
566 dxy = ((my & 3) << 2) | (mx & 3);
567 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
568 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
569 srcY += s->linesize * 8;
570 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd);
571 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
572 } else { // hpel mc - always used for luma
573 dxy = (my & 2) | ((mx & 2) >> 1);
576 dsp->put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
578 dsp->put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
581 if(s->flags & CODEC_FLAG_GRAY) return;
582 /* Chroma MC always uses qpel bilinear */
583 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
587 dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
588 dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
590 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
591 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
595 /** Do motion compensation for 4-MV macroblock - luminance block
597 static void vc1_mc_4mv_luma(VC1Context *v, int n)
599 MpegEncContext *s = &v->s;
600 DSPContext *dsp = &v->s.dsp;
602 int dxy, mx, my, src_x, src_y;
605 if(!v->s.last_picture.data[0])return;
608 srcY = s->last_picture.data[0];
610 off = s->linesize * 4 * (n&2) + (n&1) * 8;
612 src_x = s->mb_x * 16 + (n&1) * 8 + (mx >> 2);
613 src_y = s->mb_y * 16 + (n&2) * 4 + (my >> 2);
615 if(v->profile != PROFILE_ADVANCED){
616 src_x = av_clip( src_x, -16, s->mb_width * 16);
617 src_y = av_clip( src_y, -16, s->mb_height * 16);
619 src_x = av_clip( src_x, -17, s->avctx->coded_width);
620 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
623 srcY += src_y * s->linesize + src_x;
625 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
626 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 8 - s->mspel*2
627 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 8 - s->mspel*2){
628 srcY -= s->mspel * (1 + s->linesize);
629 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 9+s->mspel*2, 9+s->mspel*2,
630 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
631 srcY = s->edge_emu_buffer;
632 /* if we deal with range reduction we need to scale source blocks */
638 for(j = 0; j < 9 + s->mspel*2; j++) {
639 for(i = 0; i < 9 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
643 /* if we deal with intensity compensation we need to scale source blocks */
644 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
649 for(j = 0; j < 9 + s->mspel*2; j++) {
650 for(i = 0; i < 9 + s->mspel*2; i++) src[i] = v->luty[src[i]];
654 srcY += s->mspel * (1 + s->linesize);
658 dxy = ((my & 3) << 2) | (mx & 3);
659 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, v->rnd);
660 } else { // hpel mc - always used for luma
661 dxy = (my & 2) | ((mx & 2) >> 1);
663 dsp->put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
665 dsp->put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
669 static inline int median4(int a, int b, int c, int d)
672 if(c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2;
673 else return (FFMIN(b, c) + FFMAX(a, d)) / 2;
675 if(c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2;
676 else return (FFMIN(a, c) + FFMAX(b, d)) / 2;
681 /** Do motion compensation for 4-MV macroblock - both chroma blocks
683 static void vc1_mc_4mv_chroma(VC1Context *v)
685 MpegEncContext *s = &v->s;
686 DSPContext *dsp = &v->s.dsp;
687 uint8_t *srcU, *srcV;
688 int uvdxy, uvmx, uvmy, uvsrc_x, uvsrc_y;
689 int i, idx, tx = 0, ty = 0;
690 int mvx[4], mvy[4], intra[4];
691 static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
693 if(!v->s.last_picture.data[0])return;
694 if(s->flags & CODEC_FLAG_GRAY) return;
696 for(i = 0; i < 4; i++) {
697 mvx[i] = s->mv[0][i][0];
698 mvy[i] = s->mv[0][i][1];
699 intra[i] = v->mb_type[0][s->block_index[i]];
702 /* calculate chroma MV vector from four luma MVs */
703 idx = (intra[3] << 3) | (intra[2] << 2) | (intra[1] << 1) | intra[0];
704 if(!idx) { // all blocks are inter
705 tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]);
706 ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]);
707 } else if(count[idx] == 1) { // 3 inter blocks
710 tx = mid_pred(mvx[1], mvx[2], mvx[3]);
711 ty = mid_pred(mvy[1], mvy[2], mvy[3]);
714 tx = mid_pred(mvx[0], mvx[2], mvx[3]);
715 ty = mid_pred(mvy[0], mvy[2], mvy[3]);
718 tx = mid_pred(mvx[0], mvx[1], mvx[3]);
719 ty = mid_pred(mvy[0], mvy[1], mvy[3]);
722 tx = mid_pred(mvx[0], mvx[1], mvx[2]);
723 ty = mid_pred(mvy[0], mvy[1], mvy[2]);
726 } else if(count[idx] == 2) {
728 for(i=0; i<3;i++) if(!intra[i]) {t1 = i; break;}
729 for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;}
730 tx = (mvx[t1] + mvx[t2]) / 2;
731 ty = (mvy[t1] + mvy[t2]) / 2;
733 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
734 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
735 return; //no need to do MC for inter blocks
738 s->current_picture.motion_val[1][s->block_index[0]][0] = tx;
739 s->current_picture.motion_val[1][s->block_index[0]][1] = ty;
740 uvmx = (tx + ((tx&3) == 3)) >> 1;
741 uvmy = (ty + ((ty&3) == 3)) >> 1;
743 uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
744 uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
747 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
748 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
750 if(v->profile != PROFILE_ADVANCED){
751 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
752 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
754 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
755 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
758 srcU = s->last_picture.data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
759 srcV = s->last_picture.data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
760 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
761 || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
762 || (unsigned)uvsrc_y > (s->v_edge_pos >> 1) - 9){
763 ff_emulated_edge_mc(s->edge_emu_buffer , srcU, s->uvlinesize, 8+1, 8+1,
764 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
765 ff_emulated_edge_mc(s->edge_emu_buffer + 16, srcV, s->uvlinesize, 8+1, 8+1,
766 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
767 srcU = s->edge_emu_buffer;
768 srcV = s->edge_emu_buffer + 16;
770 /* if we deal with range reduction we need to scale source blocks */
775 src = srcU; src2 = srcV;
776 for(j = 0; j < 9; j++) {
777 for(i = 0; i < 9; i++) {
778 src[i] = ((src[i] - 128) >> 1) + 128;
779 src2[i] = ((src2[i] - 128) >> 1) + 128;
781 src += s->uvlinesize;
782 src2 += s->uvlinesize;
785 /* if we deal with intensity compensation we need to scale source blocks */
786 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
790 src = srcU; src2 = srcV;
791 for(j = 0; j < 9; j++) {
792 for(i = 0; i < 9; i++) {
793 src[i] = v->lutuv[src[i]];
794 src2[i] = v->lutuv[src2[i]];
796 src += s->uvlinesize;
797 src2 += s->uvlinesize;
802 /* Chroma MC always uses qpel bilinear */
803 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
807 dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
808 dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
810 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
811 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
815 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
818 * Decode Simple/Main Profiles sequence header
819 * @see Figure 7-8, p16-17
820 * @param avctx Codec context
821 * @param gb GetBit context initialized from Codec context extra_data
824 static int decode_sequence_header(AVCodecContext *avctx, GetBitContext *gb)
826 VC1Context *v = avctx->priv_data;
828 av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32));
829 v->profile = get_bits(gb, 2);
830 if (v->profile == PROFILE_COMPLEX)
832 av_log(avctx, AV_LOG_ERROR, "WMV3 Complex Profile is not fully supported\n");
835 if (v->profile == PROFILE_ADVANCED)
837 return decode_sequence_header_adv(v, gb);
841 v->res_sm = get_bits(gb, 2); //reserved
844 av_log(avctx, AV_LOG_ERROR,
845 "Reserved RES_SM=%i is forbidden\n", v->res_sm);
851 v->frmrtq_postproc = get_bits(gb, 3); //common
852 // (bitrate-32kbps)/64kbps
853 v->bitrtq_postproc = get_bits(gb, 5); //common
854 v->s.loop_filter = get_bits(gb, 1); //common
855 if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE)
857 av_log(avctx, AV_LOG_ERROR,
858 "LOOPFILTER shell not be enabled in simple profile\n");
861 v->res_x8 = get_bits(gb, 1); //reserved
864 av_log(avctx, AV_LOG_ERROR,
865 "1 for reserved RES_X8 is forbidden\n");
868 v->multires = get_bits(gb, 1);
869 v->res_fasttx = get_bits(gb, 1);
872 av_log(avctx, AV_LOG_ERROR,
873 "0 for reserved RES_FASTTX is forbidden\n");
877 v->fastuvmc = get_bits(gb, 1); //common
878 if (!v->profile && !v->fastuvmc)
880 av_log(avctx, AV_LOG_ERROR,
881 "FASTUVMC unavailable in Simple Profile\n");
884 v->extended_mv = get_bits(gb, 1); //common
885 if (!v->profile && v->extended_mv)
887 av_log(avctx, AV_LOG_ERROR,
888 "Extended MVs unavailable in Simple Profile\n");
891 v->dquant = get_bits(gb, 2); //common
892 v->vstransform = get_bits(gb, 1); //common
894 v->res_transtab = get_bits(gb, 1);
897 av_log(avctx, AV_LOG_ERROR,
898 "1 for reserved RES_TRANSTAB is forbidden\n");
902 v->overlap = get_bits(gb, 1); //common
904 v->s.resync_marker = get_bits(gb, 1);
905 v->rangered = get_bits(gb, 1);
906 if (v->rangered && v->profile == PROFILE_SIMPLE)
908 av_log(avctx, AV_LOG_INFO,
909 "RANGERED should be set to 0 in simple profile\n");
912 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
913 v->quantizer_mode = get_bits(gb, 2); //common
915 v->finterpflag = get_bits(gb, 1); //common
916 v->res_rtm_flag = get_bits(gb, 1); //reserved
917 if (!v->res_rtm_flag)
919 // av_log(avctx, AV_LOG_ERROR,
920 // "0 for reserved RES_RTM_FLAG is forbidden\n");
921 av_log(avctx, AV_LOG_ERROR,
922 "Old WMV3 version detected, only I-frames will be decoded\n");
925 //TODO: figure out what they mean (always 0x402F)
926 if(!v->res_fasttx) skip_bits(gb, 16);
927 av_log(avctx, AV_LOG_DEBUG,
928 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
929 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
930 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
931 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
932 v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
933 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
934 v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
935 v->dquant, v->quantizer_mode, avctx->max_b_frames
940 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
943 v->level = get_bits(gb, 3);
946 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
948 v->chromaformat = get_bits(gb, 2);
949 if (v->chromaformat != 1)
951 av_log(v->s.avctx, AV_LOG_ERROR,
952 "Only 4:2:0 chroma format supported\n");
957 v->frmrtq_postproc = get_bits(gb, 3); //common
958 // (bitrate-32kbps)/64kbps
959 v->bitrtq_postproc = get_bits(gb, 5); //common
960 v->postprocflag = get_bits(gb, 1); //common
962 v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
963 v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
964 v->s.avctx->width = v->s.avctx->coded_width;
965 v->s.avctx->height = v->s.avctx->coded_height;
966 v->broadcast = get_bits1(gb);
967 v->interlace = get_bits1(gb);
968 v->tfcntrflag = get_bits1(gb);
969 v->finterpflag = get_bits1(gb);
970 get_bits1(gb); // reserved
972 v->s.h_edge_pos = v->s.avctx->coded_width;
973 v->s.v_edge_pos = v->s.avctx->coded_height;
975 av_log(v->s.avctx, AV_LOG_DEBUG,
976 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
977 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
978 "TFCTRflag=%i, FINTERPflag=%i\n",
979 v->level, v->frmrtq_postproc, v->bitrtq_postproc,
980 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
981 v->tfcntrflag, v->finterpflag
984 v->psf = get_bits1(gb);
985 if(v->psf) { //PsF, 6.1.13
986 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
989 v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
990 if(get_bits1(gb)) { //Display Info - decoding is not affected by it
992 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
993 v->s.avctx->width = v->s.width = w = get_bits(gb, 14) + 1;
994 v->s.avctx->height = v->s.height = h = get_bits(gb, 14) + 1;
995 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
997 ar = get_bits(gb, 4);
999 v->s.avctx->sample_aspect_ratio = vc1_pixel_aspect[ar];
1001 w = get_bits(gb, 8);
1002 h = get_bits(gb, 8);
1003 v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
1006 if(get_bits1(gb)){ //framerate stuff
1008 v->s.avctx->time_base.num = 32;
1009 v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
1012 nr = get_bits(gb, 8);
1013 dr = get_bits(gb, 4);
1014 if(nr && nr < 8 && dr && dr < 3){
1015 v->s.avctx->time_base.num = fps_dr[dr - 1];
1016 v->s.avctx->time_base.den = fps_nr[nr - 1] * 1000;
1022 v->color_prim = get_bits(gb, 8);
1023 v->transfer_char = get_bits(gb, 8);
1024 v->matrix_coef = get_bits(gb, 8);
1028 v->hrd_param_flag = get_bits1(gb);
1029 if(v->hrd_param_flag) {
1031 v->hrd_num_leaky_buckets = get_bits(gb, 5);
1032 get_bits(gb, 4); //bitrate exponent
1033 get_bits(gb, 4); //buffer size exponent
1034 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
1035 get_bits(gb, 16); //hrd_rate[n]
1036 get_bits(gb, 16); //hrd_buffer[n]
1042 static int decode_entry_point(AVCodecContext *avctx, GetBitContext *gb)
1044 VC1Context *v = avctx->priv_data;
1045 int i, blink, clentry, refdist;
1047 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
1048 blink = get_bits1(gb); // broken link
1049 clentry = get_bits1(gb); // closed entry
1050 v->panscanflag = get_bits1(gb);
1051 refdist = get_bits1(gb); // refdist flag
1052 v->s.loop_filter = get_bits1(gb);
1053 v->fastuvmc = get_bits1(gb);
1054 v->extended_mv = get_bits1(gb);
1055 v->dquant = get_bits(gb, 2);
1056 v->vstransform = get_bits1(gb);
1057 v->overlap = get_bits1(gb);
1058 v->quantizer_mode = get_bits(gb, 2);
1060 if(v->hrd_param_flag){
1061 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
1062 get_bits(gb, 8); //hrd_full[n]
1067 avctx->coded_width = (get_bits(gb, 12)+1)<<1;
1068 avctx->coded_height = (get_bits(gb, 12)+1)<<1;
1071 v->extended_dmv = get_bits1(gb);
1073 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
1074 skip_bits(gb, 3); // Y range, ignored for now
1077 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
1078 skip_bits(gb, 3); // UV range, ignored for now
1081 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
1082 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
1083 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
1084 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
1085 blink, clentry, v->panscanflag, refdist, v->s.loop_filter,
1086 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
1091 static int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
1093 int pqindex, lowquant, status;
1095 if(v->finterpflag) v->interpfrm = get_bits(gb, 1);
1096 skip_bits(gb, 2); //framecnt unused
1098 if (v->rangered) v->rangeredfrm = get_bits(gb, 1);
1099 v->s.pict_type = get_bits(gb, 1);
1100 if (v->s.avctx->max_b_frames) {
1101 if (!v->s.pict_type) {
1102 if (get_bits(gb, 1)) v->s.pict_type = I_TYPE;
1103 else v->s.pict_type = B_TYPE;
1104 } else v->s.pict_type = P_TYPE;
1105 } else v->s.pict_type = v->s.pict_type ? P_TYPE : I_TYPE;
1108 if(v->s.pict_type == B_TYPE) {
1109 v->bfraction = get_vlc2(gb, vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1110 v->bfraction = vc1_bfraction_lut[v->bfraction];
1111 if(v->bfraction == 0) {
1112 v->s.pict_type = BI_TYPE;
1115 if(v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1116 get_bits(gb, 7); // skip buffer fullness
1119 if(v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1121 if(v->s.pict_type == P_TYPE)
1124 /* Quantizer stuff */
1125 pqindex = get_bits(gb, 5);
1126 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1127 v->pq = pquant_table[0][pqindex];
1129 v->pq = pquant_table[1][pqindex];
1132 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1133 v->pquantizer = pqindex < 9;
1134 if (v->quantizer_mode == QUANT_NON_UNIFORM)
1136 v->pqindex = pqindex;
1137 if (pqindex < 9) v->halfpq = get_bits(gb, 1);
1139 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
1140 v->pquantizer = get_bits(gb, 1);
1142 if (v->extended_mv == 1) v->mvrange = get_prefix(gb, 0, 3);
1143 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1144 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1145 v->range_x = 1 << (v->k_x - 1);
1146 v->range_y = 1 << (v->k_y - 1);
1147 if (v->profile == PROFILE_ADVANCED)
1149 if (v->postprocflag) v->postproc = get_bits(gb, 1);
1152 if (v->multires && v->s.pict_type != B_TYPE) v->respic = get_bits(gb, 2);
1154 if(v->res_x8 && (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)){
1155 if(get_bits1(gb))return -1;
1157 //av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
1158 // (v->s.pict_type == P_TYPE) ? 'P' : ((v->s.pict_type == I_TYPE) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
1160 if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
1162 switch(v->s.pict_type) {
1164 if (v->pq < 5) v->tt_index = 0;
1165 else if(v->pq < 13) v->tt_index = 1;
1166 else v->tt_index = 2;
1168 lowquant = (v->pq > 12) ? 0 : 1;
1169 v->mv_mode = mv_pmode_table[lowquant][get_prefix(gb, 1, 4)];
1170 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
1172 int scale, shift, i;
1173 v->mv_mode2 = mv_pmode_table2[lowquant][get_prefix(gb, 1, 3)];
1174 v->lumscale = get_bits(gb, 6);
1175 v->lumshift = get_bits(gb, 6);
1177 /* fill lookup tables for intensity compensation */
1180 shift = (255 - v->lumshift * 2) << 6;
1181 if(v->lumshift > 31)
1184 scale = v->lumscale + 32;
1185 if(v->lumshift > 31)
1186 shift = (v->lumshift - 64) << 6;
1188 shift = v->lumshift << 6;
1190 for(i = 0; i < 256; i++) {
1191 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
1192 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
1195 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1196 v->s.quarter_sample = 0;
1197 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1198 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1199 v->s.quarter_sample = 0;
1201 v->s.quarter_sample = 1;
1203 v->s.quarter_sample = 1;
1204 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));
1206 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1207 v->mv_mode2 == MV_PMODE_MIXED_MV)
1208 || v->mv_mode == MV_PMODE_MIXED_MV)
1210 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1211 if (status < 0) return -1;
1212 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1213 "Imode: %i, Invert: %i\n", status>>1, status&1);
1215 v->mv_type_is_raw = 0;
1216 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1218 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1219 if (status < 0) return -1;
1220 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1221 "Imode: %i, Invert: %i\n", status>>1, status&1);
1223 /* Hopefully this is correct for P frames */
1224 v->s.mv_table_index = get_bits(gb, 2); //but using vc1_ tables
1225 v->cbpcy_vlc = &vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1229 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1230 vop_dquant_decoding(v);
1233 v->ttfrm = 0; //FIXME Is that so ?
1236 v->ttmbf = get_bits(gb, 1);
1239 v->ttfrm = ttfrm_to_tt[get_bits(gb, 2)];
1247 if (v->pq < 5) v->tt_index = 0;
1248 else if(v->pq < 13) v->tt_index = 1;
1249 else v->tt_index = 2;
1251 lowquant = (v->pq > 12) ? 0 : 1;
1252 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1253 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1254 v->s.mspel = v->s.quarter_sample;
1256 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1257 if (status < 0) return -1;
1258 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1259 "Imode: %i, Invert: %i\n", status>>1, status&1);
1260 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1261 if (status < 0) return -1;
1262 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1263 "Imode: %i, Invert: %i\n", status>>1, status&1);
1265 v->s.mv_table_index = get_bits(gb, 2);
1266 v->cbpcy_vlc = &vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1270 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1271 vop_dquant_decoding(v);
1277 v->ttmbf = get_bits(gb, 1);
1280 v->ttfrm = ttfrm_to_tt[get_bits(gb, 2)];
1290 v->c_ac_table_index = decode012(gb);
1291 if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1293 v->y_ac_table_index = decode012(gb);
1296 v->s.dc_table_index = get_bits(gb, 1);
1298 if(v->s.pict_type == BI_TYPE) {
1299 v->s.pict_type = B_TYPE;
1305 static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
1307 int pqindex, lowquant;
1310 v->p_frame_skipped = 0;
1313 v->fcm = decode012(gb);
1314 if(v->fcm) return -1; // interlaced frames/fields are not implemented
1316 switch(get_prefix(gb, 0, 4)) {
1318 v->s.pict_type = P_TYPE;
1321 v->s.pict_type = B_TYPE;
1324 v->s.pict_type = I_TYPE;
1327 v->s.pict_type = BI_TYPE;
1330 v->s.pict_type = P_TYPE; // skipped pic
1331 v->p_frame_skipped = 1;
1337 if(!v->interlace || v->psf) {
1338 v->rptfrm = get_bits(gb, 2);
1340 v->tff = get_bits1(gb);
1341 v->rptfrm = get_bits1(gb);
1344 if(v->panscanflag) {
1347 v->rnd = get_bits1(gb);
1349 v->uvsamp = get_bits1(gb);
1350 if(v->finterpflag) v->interpfrm = get_bits(gb, 1);
1351 if(v->s.pict_type == B_TYPE) {
1352 v->bfraction = get_vlc2(gb, vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1353 v->bfraction = vc1_bfraction_lut[v->bfraction];
1354 if(v->bfraction == 0) {
1355 v->s.pict_type = BI_TYPE; /* XXX: should not happen here */
1358 pqindex = get_bits(gb, 5);
1359 v->pqindex = pqindex;
1360 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1361 v->pq = pquant_table[0][pqindex];
1363 v->pq = pquant_table[1][pqindex];
1366 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1367 v->pquantizer = pqindex < 9;
1368 if (v->quantizer_mode == QUANT_NON_UNIFORM)
1370 v->pqindex = pqindex;
1371 if (pqindex < 9) v->halfpq = get_bits(gb, 1);
1373 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
1374 v->pquantizer = get_bits(gb, 1);
1376 if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
1378 switch(v->s.pict_type) {
1381 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
1382 if (status < 0) return -1;
1383 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
1384 "Imode: %i, Invert: %i\n", status>>1, status&1);
1385 v->condover = CONDOVER_NONE;
1386 if(v->overlap && v->pq <= 8) {
1387 v->condover = decode012(gb);
1388 if(v->condover == CONDOVER_SELECT) {
1389 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
1390 if (status < 0) return -1;
1391 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
1392 "Imode: %i, Invert: %i\n", status>>1, status&1);
1398 v->postproc = get_bits1(gb);
1399 if (v->extended_mv) v->mvrange = get_prefix(gb, 0, 3);
1400 else v->mvrange = 0;
1401 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1402 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1403 v->range_x = 1 << (v->k_x - 1);
1404 v->range_y = 1 << (v->k_y - 1);
1406 if (v->pq < 5) v->tt_index = 0;
1407 else if(v->pq < 13) v->tt_index = 1;
1408 else v->tt_index = 2;
1410 lowquant = (v->pq > 12) ? 0 : 1;
1411 v->mv_mode = mv_pmode_table[lowquant][get_prefix(gb, 1, 4)];
1412 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
1414 int scale, shift, i;
1415 v->mv_mode2 = mv_pmode_table2[lowquant][get_prefix(gb, 1, 3)];
1416 v->lumscale = get_bits(gb, 6);
1417 v->lumshift = get_bits(gb, 6);
1418 /* fill lookup tables for intensity compensation */
1421 shift = (255 - v->lumshift * 2) << 6;
1422 if(v->lumshift > 31)
1425 scale = v->lumscale + 32;
1426 if(v->lumshift > 31)
1427 shift = (v->lumshift - 64) << 6;
1429 shift = v->lumshift << 6;
1431 for(i = 0; i < 256; i++) {
1432 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
1433 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
1437 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1438 v->s.quarter_sample = 0;
1439 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1440 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1441 v->s.quarter_sample = 0;
1443 v->s.quarter_sample = 1;
1445 v->s.quarter_sample = 1;
1446 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));
1448 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1449 v->mv_mode2 == MV_PMODE_MIXED_MV)
1450 || v->mv_mode == MV_PMODE_MIXED_MV)
1452 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1453 if (status < 0) return -1;
1454 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1455 "Imode: %i, Invert: %i\n", status>>1, status&1);
1457 v->mv_type_is_raw = 0;
1458 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1460 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1461 if (status < 0) return -1;
1462 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1463 "Imode: %i, Invert: %i\n", status>>1, status&1);
1465 /* Hopefully this is correct for P frames */
1466 v->s.mv_table_index = get_bits(gb, 2); //but using vc1_ tables
1467 v->cbpcy_vlc = &vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1470 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1471 vop_dquant_decoding(v);
1474 v->ttfrm = 0; //FIXME Is that so ?
1477 v->ttmbf = get_bits(gb, 1);
1480 v->ttfrm = ttfrm_to_tt[get_bits(gb, 2)];
1489 v->postproc = get_bits1(gb);
1490 if (v->extended_mv) v->mvrange = get_prefix(gb, 0, 3);
1491 else v->mvrange = 0;
1492 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1493 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1494 v->range_x = 1 << (v->k_x - 1);
1495 v->range_y = 1 << (v->k_y - 1);
1497 if (v->pq < 5) v->tt_index = 0;
1498 else if(v->pq < 13) v->tt_index = 1;
1499 else v->tt_index = 2;
1501 lowquant = (v->pq > 12) ? 0 : 1;
1502 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1503 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1504 v->s.mspel = v->s.quarter_sample;
1506 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1507 if (status < 0) return -1;
1508 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1509 "Imode: %i, Invert: %i\n", status>>1, status&1);
1510 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1511 if (status < 0) return -1;
1512 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1513 "Imode: %i, Invert: %i\n", status>>1, status&1);
1515 v->s.mv_table_index = get_bits(gb, 2);
1516 v->cbpcy_vlc = &vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1520 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1521 vop_dquant_decoding(v);
1527 v->ttmbf = get_bits(gb, 1);
1530 v->ttfrm = ttfrm_to_tt[get_bits(gb, 2)];
1540 v->c_ac_table_index = decode012(gb);
1541 if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1543 v->y_ac_table_index = decode012(gb);
1546 v->s.dc_table_index = get_bits(gb, 1);
1547 if ((v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE) && v->dquant) {
1548 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1549 vop_dquant_decoding(v);
1553 if(v->s.pict_type == BI_TYPE) {
1554 v->s.pict_type = B_TYPE;
1560 /***********************************************************************/
1562 * @defgroup block VC-1 Block-level functions
1563 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
1569 * @brief Get macroblock-level quantizer scale
1571 #define GET_MQUANT() \
1575 if (v->dqprofile == DQPROFILE_ALL_MBS) \
1579 mquant = (get_bits(gb, 1)) ? v->altpq : v->pq; \
1583 mqdiff = get_bits(gb, 3); \
1584 if (mqdiff != 7) mquant = v->pq + mqdiff; \
1585 else mquant = get_bits(gb, 5); \
1588 if(v->dqprofile == DQPROFILE_SINGLE_EDGE) \
1589 edges = 1 << v->dqsbedge; \
1590 else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
1591 edges = (3 << v->dqsbedge) % 15; \
1592 else if(v->dqprofile == DQPROFILE_FOUR_EDGES) \
1594 if((edges&1) && !s->mb_x) \
1595 mquant = v->altpq; \
1596 if((edges&2) && s->first_slice_line) \
1597 mquant = v->altpq; \
1598 if((edges&4) && s->mb_x == (s->mb_width - 1)) \
1599 mquant = v->altpq; \
1600 if((edges&8) && s->mb_y == (s->mb_height - 1)) \
1601 mquant = v->altpq; \
1605 * @def GET_MVDATA(_dmv_x, _dmv_y)
1606 * @brief Get MV differentials
1607 * @see MVDATA decoding from 8.3.5.2, p(1)20
1608 * @param _dmv_x Horizontal differential for decoded MV
1609 * @param _dmv_y Vertical differential for decoded MV
1611 #define GET_MVDATA(_dmv_x, _dmv_y) \
1612 index = 1 + get_vlc2(gb, vc1_mv_diff_vlc[s->mv_table_index].table,\
1613 VC1_MV_DIFF_VLC_BITS, 2); \
1616 mb_has_coeffs = 1; \
1619 else mb_has_coeffs = 0; \
1621 if (!index) { _dmv_x = _dmv_y = 0; } \
1622 else if (index == 35) \
1624 _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
1625 _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
1627 else if (index == 36) \
1636 if (!s->quarter_sample && index1 == 5) val = 1; \
1638 if(size_table[index1] - val > 0) \
1639 val = get_bits(gb, size_table[index1] - val); \
1641 sign = 0 - (val&1); \
1642 _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
1645 if (!s->quarter_sample && index1 == 5) val = 1; \
1647 if(size_table[index1] - val > 0) \
1648 val = get_bits(gb, size_table[index1] - val); \
1650 sign = 0 - (val&1); \
1651 _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
1654 /** Predict and set motion vector
1656 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)
1658 int xy, wrap, off = 0;
1663 /* scale MV difference to be quad-pel */
1664 dmv_x <<= 1 - s->quarter_sample;
1665 dmv_y <<= 1 - s->quarter_sample;
1667 wrap = s->b8_stride;
1668 xy = s->block_index[n];
1671 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
1672 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
1673 s->current_picture.motion_val[1][xy][0] = 0;
1674 s->current_picture.motion_val[1][xy][1] = 0;
1675 if(mv1) { /* duplicate motion data for 1-MV block */
1676 s->current_picture.motion_val[0][xy + 1][0] = 0;
1677 s->current_picture.motion_val[0][xy + 1][1] = 0;
1678 s->current_picture.motion_val[0][xy + wrap][0] = 0;
1679 s->current_picture.motion_val[0][xy + wrap][1] = 0;
1680 s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
1681 s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
1682 s->current_picture.motion_val[1][xy + 1][0] = 0;
1683 s->current_picture.motion_val[1][xy + 1][1] = 0;
1684 s->current_picture.motion_val[1][xy + wrap][0] = 0;
1685 s->current_picture.motion_val[1][xy + wrap][1] = 0;
1686 s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
1687 s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
1692 C = s->current_picture.motion_val[0][xy - 1];
1693 A = s->current_picture.motion_val[0][xy - wrap];
1695 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
1697 //in 4-MV mode different blocks have different B predictor position
1700 off = (s->mb_x > 0) ? -1 : 1;
1703 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
1712 B = s->current_picture.motion_val[0][xy - wrap + off];
1714 if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds
1715 if(s->mb_width == 1) {
1719 px = mid_pred(A[0], B[0], C[0]);
1720 py = mid_pred(A[1], B[1], C[1]);
1722 } else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds
1728 /* Pullback MV as specified in 8.3.5.3.4 */
1731 qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0);
1732 qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0);
1733 X = (s->mb_width << 6) - 4;
1734 Y = (s->mb_height << 6) - 4;
1736 if(qx + px < -60) px = -60 - qx;
1737 if(qy + py < -60) py = -60 - qy;
1739 if(qx + px < -28) px = -28 - qx;
1740 if(qy + py < -28) py = -28 - qy;
1742 if(qx + px > X) px = X - qx;
1743 if(qy + py > Y) py = Y - qy;
1745 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1746 if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) {
1747 if(is_intra[xy - wrap])
1748 sum = FFABS(px) + FFABS(py);
1750 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1752 if(get_bits1(&s->gb)) {
1760 if(is_intra[xy - 1])
1761 sum = FFABS(px) + FFABS(py);
1763 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1765 if(get_bits1(&s->gb)) {
1775 /* store MV using signed modulus of MV range defined in 4.11 */
1776 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
1777 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
1778 if(mv1) { /* duplicate motion data for 1-MV block */
1779 s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0];
1780 s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1];
1781 s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0];
1782 s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1];
1783 s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0];
1784 s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1];
1788 /** Motion compensation for direct or interpolated blocks in B-frames
1790 static void vc1_interp_mc(VC1Context *v)
1792 MpegEncContext *s = &v->s;
1793 DSPContext *dsp = &v->s.dsp;
1794 uint8_t *srcY, *srcU, *srcV;
1795 int dxy, uvdxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
1797 if(!v->s.next_picture.data[0])return;
1799 mx = s->mv[1][0][0];
1800 my = s->mv[1][0][1];
1801 uvmx = (mx + ((mx & 3) == 3)) >> 1;
1802 uvmy = (my + ((my & 3) == 3)) >> 1;
1804 uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
1805 uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
1807 srcY = s->next_picture.data[0];
1808 srcU = s->next_picture.data[1];
1809 srcV = s->next_picture.data[2];
1811 src_x = s->mb_x * 16 + (mx >> 2);
1812 src_y = s->mb_y * 16 + (my >> 2);
1813 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
1814 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
1816 if(v->profile != PROFILE_ADVANCED){
1817 src_x = av_clip( src_x, -16, s->mb_width * 16);
1818 src_y = av_clip( src_y, -16, s->mb_height * 16);
1819 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
1820 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
1822 src_x = av_clip( src_x, -17, s->avctx->coded_width);
1823 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
1824 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
1825 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
1828 srcY += src_y * s->linesize + src_x;
1829 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
1830 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
1832 /* for grayscale we should not try to read from unknown area */
1833 if(s->flags & CODEC_FLAG_GRAY) {
1834 srcU = s->edge_emu_buffer + 18 * s->linesize;
1835 srcV = s->edge_emu_buffer + 18 * s->linesize;
1839 || (unsigned)src_x > s->h_edge_pos - (mx&3) - 16
1840 || (unsigned)src_y > s->v_edge_pos - (my&3) - 16){
1841 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
1843 srcY -= s->mspel * (1 + s->linesize);
1844 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
1845 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
1846 srcY = s->edge_emu_buffer;
1847 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
1848 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
1849 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
1850 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
1853 /* if we deal with range reduction we need to scale source blocks */
1854 if(v->rangeredfrm) {
1856 uint8_t *src, *src2;
1859 for(j = 0; j < 17 + s->mspel*2; j++) {
1860 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
1863 src = srcU; src2 = srcV;
1864 for(j = 0; j < 9; j++) {
1865 for(i = 0; i < 9; i++) {
1866 src[i] = ((src[i] - 128) >> 1) + 128;
1867 src2[i] = ((src2[i] - 128) >> 1) + 128;
1869 src += s->uvlinesize;
1870 src2 += s->uvlinesize;
1873 srcY += s->mspel * (1 + s->linesize);
1878 dxy = ((my & 1) << 1) | (mx & 1);
1880 dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
1882 if(s->flags & CODEC_FLAG_GRAY) return;
1883 /* Chroma MC always uses qpel blilinear */
1884 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
1887 dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
1888 dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
1891 static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
1895 #if B_FRACTION_DEN==256
1899 return 2 * ((value * n + 255) >> 9);
1900 return (value * n + 128) >> 8;
1903 n -= B_FRACTION_DEN;
1905 return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
1906 return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
1910 /** Reconstruct motion vector for B-frame and do motion compensation
1912 static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
1915 v->mv_mode2 = v->mv_mode;
1916 v->mv_mode = MV_PMODE_INTENSITY_COMP;
1921 if(v->use_ic) v->mv_mode = v->mv_mode2;
1924 if(mode == BMV_TYPE_INTERPOLATED) {
1927 if(v->use_ic) v->mv_mode = v->mv_mode2;
1931 if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2;
1932 vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
1933 if(v->use_ic) v->mv_mode = v->mv_mode2;
1936 static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype)
1938 MpegEncContext *s = &v->s;
1939 int xy, wrap, off = 0;
1944 const uint8_t *is_intra = v->mb_type[0];
1948 /* scale MV difference to be quad-pel */
1949 dmv_x[0] <<= 1 - s->quarter_sample;
1950 dmv_y[0] <<= 1 - s->quarter_sample;
1951 dmv_x[1] <<= 1 - s->quarter_sample;
1952 dmv_y[1] <<= 1 - s->quarter_sample;
1954 wrap = s->b8_stride;
1955 xy = s->block_index[0];
1958 s->current_picture.motion_val[0][xy][0] =
1959 s->current_picture.motion_val[0][xy][1] =
1960 s->current_picture.motion_val[1][xy][0] =
1961 s->current_picture.motion_val[1][xy][1] = 0;
1964 s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
1965 s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
1966 s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
1967 s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
1969 /* Pullback predicted motion vectors as specified in 8.4.5.4 */
1970 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));
1971 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));
1972 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));
1973 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));
1975 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
1976 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
1977 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
1978 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
1982 if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
1983 C = s->current_picture.motion_val[0][xy - 2];
1984 A = s->current_picture.motion_val[0][xy - wrap*2];
1985 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
1986 B = s->current_picture.motion_val[0][xy - wrap*2 + off];
1988 if(!s->mb_x) C[0] = C[1] = 0;
1989 if(!s->first_slice_line) { // predictor A is not out of bounds
1990 if(s->mb_width == 1) {
1994 px = mid_pred(A[0], B[0], C[0]);
1995 py = mid_pred(A[1], B[1], C[1]);
1997 } else if(s->mb_x) { // predictor C is not out of bounds
2003 /* Pullback MV as specified in 8.3.5.3.4 */
2006 if(v->profile < PROFILE_ADVANCED) {
2007 qx = (s->mb_x << 5);
2008 qy = (s->mb_y << 5);
2009 X = (s->mb_width << 5) - 4;
2010 Y = (s->mb_height << 5) - 4;
2011 if(qx + px < -28) px = -28 - qx;
2012 if(qy + py < -28) py = -28 - qy;
2013 if(qx + px > X) px = X - qx;
2014 if(qy + py > Y) py = Y - qy;
2016 qx = (s->mb_x << 6);
2017 qy = (s->mb_y << 6);
2018 X = (s->mb_width << 6) - 4;
2019 Y = (s->mb_height << 6) - 4;
2020 if(qx + px < -60) px = -60 - qx;
2021 if(qy + py < -60) py = -60 - qy;
2022 if(qx + px > X) px = X - qx;
2023 if(qy + py > Y) py = Y - qy;
2026 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
2027 if(0 && !s->first_slice_line && s->mb_x) {
2028 if(is_intra[xy - wrap])
2029 sum = FFABS(px) + FFABS(py);
2031 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
2033 if(get_bits1(&s->gb)) {
2041 if(is_intra[xy - 2])
2042 sum = FFABS(px) + FFABS(py);
2044 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
2046 if(get_bits1(&s->gb)) {
2056 /* store MV using signed modulus of MV range defined in 4.11 */
2057 s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
2058 s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
2060 if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
2061 C = s->current_picture.motion_val[1][xy - 2];
2062 A = s->current_picture.motion_val[1][xy - wrap*2];
2063 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
2064 B = s->current_picture.motion_val[1][xy - wrap*2 + off];
2066 if(!s->mb_x) C[0] = C[1] = 0;
2067 if(!s->first_slice_line) { // predictor A is not out of bounds
2068 if(s->mb_width == 1) {
2072 px = mid_pred(A[0], B[0], C[0]);
2073 py = mid_pred(A[1], B[1], C[1]);
2075 } else if(s->mb_x) { // predictor C is not out of bounds
2081 /* Pullback MV as specified in 8.3.5.3.4 */
2084 if(v->profile < PROFILE_ADVANCED) {
2085 qx = (s->mb_x << 5);
2086 qy = (s->mb_y << 5);
2087 X = (s->mb_width << 5) - 4;
2088 Y = (s->mb_height << 5) - 4;
2089 if(qx + px < -28) px = -28 - qx;
2090 if(qy + py < -28) py = -28 - qy;
2091 if(qx + px > X) px = X - qx;
2092 if(qy + py > Y) py = Y - qy;
2094 qx = (s->mb_x << 6);
2095 qy = (s->mb_y << 6);
2096 X = (s->mb_width << 6) - 4;
2097 Y = (s->mb_height << 6) - 4;
2098 if(qx + px < -60) px = -60 - qx;
2099 if(qy + py < -60) py = -60 - qy;
2100 if(qx + px > X) px = X - qx;
2101 if(qy + py > Y) py = Y - qy;
2104 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
2105 if(0 && !s->first_slice_line && s->mb_x) {
2106 if(is_intra[xy - wrap])
2107 sum = FFABS(px) + FFABS(py);
2109 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
2111 if(get_bits1(&s->gb)) {
2119 if(is_intra[xy - 2])
2120 sum = FFABS(px) + FFABS(py);
2122 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
2124 if(get_bits1(&s->gb)) {
2134 /* store MV using signed modulus of MV range defined in 4.11 */
2136 s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
2137 s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
2139 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
2140 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
2141 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
2142 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
2145 /** Get predicted DC value for I-frames only
2146 * prediction dir: left=0, top=1
2147 * @param s MpegEncContext
2148 * @param[in] n block index in the current MB
2149 * @param dc_val_ptr Pointer to DC predictor
2150 * @param dir_ptr Prediction direction for use in AC prediction
2152 static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
2153 int16_t **dc_val_ptr, int *dir_ptr)
2155 int a, b, c, wrap, pred, scale;
2157 static const uint16_t dcpred[32] = {
2158 -1, 1024, 512, 341, 256, 205, 171, 146, 128,
2159 114, 102, 93, 85, 79, 73, 68, 64,
2160 60, 57, 54, 51, 49, 47, 45, 43,
2161 41, 39, 38, 37, 35, 34, 33
2164 /* find prediction - wmv3_dc_scale always used here in fact */
2165 if (n < 4) scale = s->y_dc_scale;
2166 else scale = s->c_dc_scale;
2168 wrap = s->block_wrap[n];
2169 dc_val= s->dc_val[0] + s->block_index[n];
2175 b = dc_val[ - 1 - wrap];
2176 a = dc_val[ - wrap];
2178 if (pq < 9 || !overlap)
2180 /* Set outer values */
2181 if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
2182 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
2186 /* Set outer values */
2187 if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
2188 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
2191 if (abs(a - b) <= abs(b - c)) {
2199 /* update predictor */
2200 *dc_val_ptr = &dc_val[0];
2205 /** Get predicted DC value
2206 * prediction dir: left=0, top=1
2207 * @param s MpegEncContext
2208 * @param[in] n block index in the current MB
2209 * @param dc_val_ptr Pointer to DC predictor
2210 * @param dir_ptr Prediction direction for use in AC prediction
2212 static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
2213 int a_avail, int c_avail,
2214 int16_t **dc_val_ptr, int *dir_ptr)
2216 int a, b, c, wrap, pred, scale;
2218 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2221 /* find prediction - wmv3_dc_scale always used here in fact */
2222 if (n < 4) scale = s->y_dc_scale;
2223 else scale = s->c_dc_scale;
2225 wrap = s->block_wrap[n];
2226 dc_val= s->dc_val[0] + s->block_index[n];
2232 b = dc_val[ - 1 - wrap];
2233 a = dc_val[ - wrap];
2234 /* scale predictors if needed */
2235 q1 = s->current_picture.qscale_table[mb_pos];
2236 if(c_avail && (n!= 1 && n!=3)) {
2237 q2 = s->current_picture.qscale_table[mb_pos - 1];
2239 c = (c * s->y_dc_scale_table[q2] * vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2241 if(a_avail && (n!= 2 && n!=3)) {
2242 q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2244 a = (a * s->y_dc_scale_table[q2] * vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2246 if(a_avail && c_avail && (n!=3)) {
2249 if(n != 2) off -= s->mb_stride;
2250 q2 = s->current_picture.qscale_table[off];
2252 b = (b * s->y_dc_scale_table[q2] * vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2255 if(a_avail && c_avail) {
2256 if(abs(a - b) <= abs(b - c)) {
2263 } else if(a_avail) {
2266 } else if(c_avail) {
2274 /* update predictor */
2275 *dc_val_ptr = &dc_val[0];
2281 * @defgroup std_mb VC1 Macroblock-level functions in Simple/Main Profiles
2282 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
2286 static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
2288 int xy, wrap, pred, a, b, c;
2290 xy = s->block_index[n];
2291 wrap = s->b8_stride;
2296 a = s->coded_block[xy - 1 ];
2297 b = s->coded_block[xy - 1 - wrap];
2298 c = s->coded_block[xy - wrap];
2307 *coded_block_ptr = &s->coded_block[xy];
2313 * Decode one AC coefficient
2314 * @param v The VC1 context
2315 * @param last Last coefficient
2316 * @param skip How much zero coefficients to skip
2317 * @param value Decoded AC coefficient value
2320 static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset)
2322 GetBitContext *gb = &v->s.gb;
2323 int index, escape, run = 0, level = 0, lst = 0;
2325 index = get_vlc2(gb, vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
2326 if (index != vc1_ac_sizes[codingset] - 1) {
2327 run = vc1_index_decode_table[codingset][index][0];
2328 level = vc1_index_decode_table[codingset][index][1];
2329 lst = index >= vc1_last_decode_table[codingset];
2333 escape = decode210(gb);
2335 index = get_vlc2(gb, vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
2336 run = vc1_index_decode_table[codingset][index][0];
2337 level = vc1_index_decode_table[codingset][index][1];
2338 lst = index >= vc1_last_decode_table[codingset];
2341 level += vc1_last_delta_level_table[codingset][run];
2343 level += vc1_delta_level_table[codingset][run];
2346 run += vc1_last_delta_run_table[codingset][level] + 1;
2348 run += vc1_delta_run_table[codingset][level] + 1;
2354 lst = get_bits(gb, 1);
2355 if(v->s.esc3_level_length == 0) {
2356 if(v->pq < 8 || v->dquantfrm) { // table 59
2357 v->s.esc3_level_length = get_bits(gb, 3);
2358 if(!v->s.esc3_level_length)
2359 v->s.esc3_level_length = get_bits(gb, 2) + 8;
2361 v->s.esc3_level_length = get_prefix(gb, 1, 6) + 2;
2363 v->s.esc3_run_length = 3 + get_bits(gb, 2);
2365 run = get_bits(gb, v->s.esc3_run_length);
2366 sign = get_bits(gb, 1);
2367 level = get_bits(gb, v->s.esc3_level_length);
2378 /** Decode intra block in intra frames - should be faster than decode_intra_block
2379 * @param v VC1Context
2380 * @param block block to decode
2381 * @param coded are AC coeffs present or not
2382 * @param codingset set of VLC to decode data
2384 static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset)
2386 GetBitContext *gb = &v->s.gb;
2387 MpegEncContext *s = &v->s;
2388 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2391 int16_t *ac_val, *ac_val2;
2394 /* Get DC differential */
2396 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2398 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2401 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2406 if (dcdiff == 119 /* ESC index value */)
2408 /* TODO: Optimize */
2409 if (v->pq == 1) dcdiff = get_bits(gb, 10);
2410 else if (v->pq == 2) dcdiff = get_bits(gb, 9);
2411 else dcdiff = get_bits(gb, 8);
2416 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2417 else if (v->pq == 2)
2418 dcdiff = (dcdiff<<1) + get_bits(gb, 1) - 1;
2420 if (get_bits(gb, 1))
2425 dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
2428 /* Store the quantized DC coeff, used for prediction */
2430 block[0] = dcdiff * s->y_dc_scale;
2432 block[0] = dcdiff * s->c_dc_scale;
2445 int last = 0, skip, value;
2446 const int8_t *zz_table;
2450 scale = v->pq * 2 + v->halfpq;
2454 zz_table = vc1_horizontal_zz;
2456 zz_table = vc1_vertical_zz;
2458 zz_table = vc1_normal_zz;
2460 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2462 if(dc_pred_dir) //left
2465 ac_val -= 16 * s->block_wrap[n];
2468 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2472 block[zz_table[i++]] = value;
2475 /* apply AC prediction if needed */
2477 if(dc_pred_dir) { //left
2478 for(k = 1; k < 8; k++)
2479 block[k << 3] += ac_val[k];
2481 for(k = 1; k < 8; k++)
2482 block[k] += ac_val[k + 8];
2485 /* save AC coeffs for further prediction */
2486 for(k = 1; k < 8; k++) {
2487 ac_val2[k] = block[k << 3];
2488 ac_val2[k + 8] = block[k];
2491 /* scale AC coeffs */
2492 for(k = 1; k < 64; k++)
2496 block[k] += (block[k] < 0) ? -v->pq : v->pq;
2499 if(s->ac_pred) i = 63;
2505 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2508 scale = v->pq * 2 + v->halfpq;
2509 memset(ac_val2, 0, 16 * 2);
2510 if(dc_pred_dir) {//left
2513 memcpy(ac_val2, ac_val, 8 * 2);
2515 ac_val -= 16 * s->block_wrap[n];
2517 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2520 /* apply AC prediction if needed */
2522 if(dc_pred_dir) { //left
2523 for(k = 1; k < 8; k++) {
2524 block[k << 3] = ac_val[k] * scale;
2525 if(!v->pquantizer && block[k << 3])
2526 block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq;
2529 for(k = 1; k < 8; k++) {
2530 block[k] = ac_val[k + 8] * scale;
2531 if(!v->pquantizer && block[k])
2532 block[k] += (block[k] < 0) ? -v->pq : v->pq;
2538 s->block_last_index[n] = i;
2543 /** Decode intra block in intra frames - should be faster than decode_intra_block
2544 * @param v VC1Context
2545 * @param block block to decode
2546 * @param coded are AC coeffs present or not
2547 * @param codingset set of VLC to decode data
2549 static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant)
2551 GetBitContext *gb = &v->s.gb;
2552 MpegEncContext *s = &v->s;
2553 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2556 int16_t *ac_val, *ac_val2;
2558 int a_avail = v->a_avail, c_avail = v->c_avail;
2559 int use_pred = s->ac_pred;
2562 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2564 /* Get DC differential */
2566 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2568 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2571 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2576 if (dcdiff == 119 /* ESC index value */)
2578 /* TODO: Optimize */
2579 if (mquant == 1) dcdiff = get_bits(gb, 10);
2580 else if (mquant == 2) dcdiff = get_bits(gb, 9);
2581 else dcdiff = get_bits(gb, 8);
2586 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2587 else if (mquant == 2)
2588 dcdiff = (dcdiff<<1) + get_bits(gb, 1) - 1;
2590 if (get_bits(gb, 1))
2595 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
2598 /* Store the quantized DC coeff, used for prediction */
2600 block[0] = dcdiff * s->y_dc_scale;
2602 block[0] = dcdiff * s->c_dc_scale;
2611 /* check if AC is needed at all and adjust direction if needed */
2612 if(!a_avail) dc_pred_dir = 1;
2613 if(!c_avail) dc_pred_dir = 0;
2614 if(!a_avail && !c_avail) use_pred = 0;
2615 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2618 scale = mquant * 2 + v->halfpq;
2620 if(dc_pred_dir) //left
2623 ac_val -= 16 * s->block_wrap[n];
2625 q1 = s->current_picture.qscale_table[mb_pos];
2626 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
2627 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2628 if(dc_pred_dir && n==1) q2 = q1;
2629 if(!dc_pred_dir && n==2) q2 = q1;
2633 int last = 0, skip, value;
2634 const int8_t *zz_table;
2639 zz_table = vc1_horizontal_zz;
2641 zz_table = vc1_vertical_zz;
2643 zz_table = vc1_normal_zz;
2646 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2650 block[zz_table[i++]] = value;
2653 /* apply AC prediction if needed */
2655 /* scale predictors if needed*/
2657 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2658 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2660 if(dc_pred_dir) { //left
2661 for(k = 1; k < 8; k++)
2662 block[k << 3] += (ac_val[k] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2664 for(k = 1; k < 8; k++)
2665 block[k] += (ac_val[k + 8] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2668 if(dc_pred_dir) { //left
2669 for(k = 1; k < 8; k++)
2670 block[k << 3] += ac_val[k];
2672 for(k = 1; k < 8; k++)
2673 block[k] += ac_val[k + 8];
2677 /* save AC coeffs for further prediction */
2678 for(k = 1; k < 8; k++) {
2679 ac_val2[k] = block[k << 3];
2680 ac_val2[k + 8] = block[k];
2683 /* scale AC coeffs */
2684 for(k = 1; k < 64; k++)
2688 block[k] += (block[k] < 0) ? -mquant : mquant;
2691 if(use_pred) i = 63;
2692 } else { // no AC coeffs
2695 memset(ac_val2, 0, 16 * 2);
2696 if(dc_pred_dir) {//left
2698 memcpy(ac_val2, ac_val, 8 * 2);
2700 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2701 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2702 for(k = 1; k < 8; k++)
2703 ac_val2[k] = (ac_val2[k] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2708 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2710 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2711 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2712 for(k = 1; k < 8; k++)
2713 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2718 /* apply AC prediction if needed */
2720 if(dc_pred_dir) { //left
2721 for(k = 1; k < 8; k++) {
2722 block[k << 3] = ac_val2[k] * scale;
2723 if(!v->pquantizer && block[k << 3])
2724 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
2727 for(k = 1; k < 8; k++) {
2728 block[k] = ac_val2[k + 8] * scale;
2729 if(!v->pquantizer && block[k])
2730 block[k] += (block[k] < 0) ? -mquant : mquant;
2736 s->block_last_index[n] = i;
2741 /** Decode intra block in inter frames - more generic version than vc1_decode_i_block
2742 * @param v VC1Context
2743 * @param block block to decode
2744 * @param coded are AC coeffs present or not
2745 * @param mquant block quantizer
2746 * @param codingset set of VLC to decode data
2748 static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset)
2750 GetBitContext *gb = &v->s.gb;
2751 MpegEncContext *s = &v->s;
2752 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2755 int16_t *ac_val, *ac_val2;
2757 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2758 int a_avail = v->a_avail, c_avail = v->c_avail;
2759 int use_pred = s->ac_pred;
2763 /* XXX: Guard against dumb values of mquant */
2764 mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
2766 /* Set DC scale - y and c use the same */
2767 s->y_dc_scale = s->y_dc_scale_table[mquant];
2768 s->c_dc_scale = s->c_dc_scale_table[mquant];
2770 /* Get DC differential */
2772 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2774 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2777 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2782 if (dcdiff == 119 /* ESC index value */)
2784 /* TODO: Optimize */
2785 if (mquant == 1) dcdiff = get_bits(gb, 10);
2786 else if (mquant == 2) dcdiff = get_bits(gb, 9);
2787 else dcdiff = get_bits(gb, 8);
2792 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2793 else if (mquant == 2)
2794 dcdiff = (dcdiff<<1) + get_bits(gb, 1) - 1;
2796 if (get_bits(gb, 1))
2801 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
2804 /* Store the quantized DC coeff, used for prediction */
2807 block[0] = dcdiff * s->y_dc_scale;
2809 block[0] = dcdiff * s->c_dc_scale;
2818 /* check if AC is needed at all and adjust direction if needed */
2819 if(!a_avail) dc_pred_dir = 1;
2820 if(!c_avail) dc_pred_dir = 0;
2821 if(!a_avail && !c_avail) use_pred = 0;
2822 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2825 scale = mquant * 2 + v->halfpq;
2827 if(dc_pred_dir) //left
2830 ac_val -= 16 * s->block_wrap[n];
2832 q1 = s->current_picture.qscale_table[mb_pos];
2833 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
2834 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2835 if(dc_pred_dir && n==1) q2 = q1;
2836 if(!dc_pred_dir && n==2) q2 = q1;
2840 int last = 0, skip, value;
2841 const int8_t *zz_table;
2844 zz_table = vc1_simple_progressive_8x8_zz;
2847 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2851 block[zz_table[i++]] = value;
2854 /* apply AC prediction if needed */
2856 /* scale predictors if needed*/
2858 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2859 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2861 if(dc_pred_dir) { //left
2862 for(k = 1; k < 8; k++)
2863 block[k << 3] += (ac_val[k] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2865 for(k = 1; k < 8; k++)
2866 block[k] += (ac_val[k + 8] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2869 if(dc_pred_dir) { //left
2870 for(k = 1; k < 8; k++)
2871 block[k << 3] += ac_val[k];
2873 for(k = 1; k < 8; k++)
2874 block[k] += ac_val[k + 8];
2878 /* save AC coeffs for further prediction */
2879 for(k = 1; k < 8; k++) {
2880 ac_val2[k] = block[k << 3];
2881 ac_val2[k + 8] = block[k];
2884 /* scale AC coeffs */
2885 for(k = 1; k < 64; k++)
2889 block[k] += (block[k] < 0) ? -mquant : mquant;
2892 if(use_pred) i = 63;
2893 } else { // no AC coeffs
2896 memset(ac_val2, 0, 16 * 2);
2897 if(dc_pred_dir) {//left
2899 memcpy(ac_val2, ac_val, 8 * 2);
2901 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2902 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2903 for(k = 1; k < 8; k++)
2904 ac_val2[k] = (ac_val2[k] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2909 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2911 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2912 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2913 for(k = 1; k < 8; k++)
2914 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2919 /* apply AC prediction if needed */
2921 if(dc_pred_dir) { //left
2922 for(k = 1; k < 8; k++) {
2923 block[k << 3] = ac_val2[k] * scale;
2924 if(!v->pquantizer && block[k << 3])
2925 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
2928 for(k = 1; k < 8; k++) {
2929 block[k] = ac_val2[k + 8] * scale;
2930 if(!v->pquantizer && block[k])
2931 block[k] += (block[k] < 0) ? -mquant : mquant;
2937 s->block_last_index[n] = i;
2944 static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block)
2946 MpegEncContext *s = &v->s;
2947 GetBitContext *gb = &s->gb;
2950 int scale, off, idx, last, skip, value;
2951 int ttblk = ttmb & 7;
2954 ttblk = ttblk_to_tt[v->tt_index][get_vlc2(gb, vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)];
2956 if(ttblk == TT_4X4) {
2957 subblkpat = ~(get_vlc2(gb, vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
2959 if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) {
2960 subblkpat = decode012(gb);
2961 if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits
2962 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4;
2963 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8;
2965 scale = 2 * mquant + v->halfpq;
2967 // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
2968 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
2969 subblkpat = 2 - (ttblk == TT_8X4_TOP);
2972 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
2973 subblkpat = 2 - (ttblk == TT_4X8_LEFT);
2981 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2985 idx = vc1_simple_progressive_8x8_zz[i++];
2986 block[idx] = value * scale;
2988 block[idx] += (block[idx] < 0) ? -mquant : mquant;
2990 s->dsp.vc1_inv_trans_8x8(block);
2993 for(j = 0; j < 4; j++) {
2994 last = subblkpat & (1 << (3 - j));
2996 off = (j & 1) * 4 + (j & 2) * 16;
2998 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
3002 idx = vc1_simple_progressive_4x4_zz[i++];
3003 block[idx + off] = value * scale;
3005 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
3007 if(!(subblkpat & (1 << (3 - j))))
3008 s->dsp.vc1_inv_trans_4x4(block, j);
3012 for(j = 0; j < 2; j++) {
3013 last = subblkpat & (1 << (1 - j));
3017 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
3021 if(v->profile < PROFILE_ADVANCED)
3022 idx = vc1_simple_progressive_8x4_zz[i++];
3024 idx = vc1_adv_progressive_8x4_zz[i++];
3025 block[idx + off] = value * scale;
3027 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
3029 if(!(subblkpat & (1 << (1 - j))))
3030 s->dsp.vc1_inv_trans_8x4(block, j);
3034 for(j = 0; j < 2; j++) {
3035 last = subblkpat & (1 << (1 - j));
3039 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
3043 if(v->profile < PROFILE_ADVANCED)
3044 idx = vc1_simple_progressive_4x8_zz[i++];
3046 idx = vc1_adv_progressive_4x8_zz[i++];
3047 block[idx + off] = value * scale;
3049 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
3051 if(!(subblkpat & (1 << (1 - j))))
3052 s->dsp.vc1_inv_trans_4x8(block, j);
3060 /** Decode one P-frame MB (in Simple/Main profile)
3062 static int vc1_decode_p_mb(VC1Context *v)
3064 MpegEncContext *s = &v->s;
3065 GetBitContext *gb = &s->gb;
3067 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3068 int cbp; /* cbp decoding stuff */
3069 int mqdiff, mquant; /* MB quantization */
3070 int ttmb = v->ttfrm; /* MB Transform type */
3073 static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
3074 offset_table[6] = { 0, 1, 3, 7, 15, 31 };
3075 int mb_has_coeffs = 1; /* last_flag */
3076 int dmv_x, dmv_y; /* Differential MV components */
3077 int index, index1; /* LUT indices */
3078 int val, sign; /* temp values */
3079 int first_block = 1;
3081 int skipped, fourmv;
3083 mquant = v->pq; /* Loosy initialization */
3085 if (v->mv_type_is_raw)
3086 fourmv = get_bits1(gb);
3088 fourmv = v->mv_type_mb_plane[mb_pos];
3090 skipped = get_bits1(gb);
3092 skipped = v->s.mbskip_table[mb_pos];
3094 s->dsp.clear_blocks(s->block[0]);
3096 if (!fourmv) /* 1MV mode */
3100 GET_MVDATA(dmv_x, dmv_y);
3103 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3104 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3106 s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
3107 vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]);
3109 /* FIXME Set DC val for inter block ? */
3110 if (s->mb_intra && !mb_has_coeffs)
3113 s->ac_pred = get_bits(gb, 1);
3116 else if (mb_has_coeffs)
3118 if (s->mb_intra) s->ac_pred = get_bits(gb, 1);
3119 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3127 s->current_picture.qscale_table[mb_pos] = mquant;
3129 if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
3130 ttmb = get_vlc2(gb, vc1_ttmb_vlc[v->tt_index].table,
3131 VC1_TTMB_VLC_BITS, 2);
3132 if(!s->mb_intra) vc1_mc_1mv(v, 0);
3136 s->dc_val[0][s->block_index[i]] = 0;
3138 val = ((cbp >> (5 - i)) & 1);
3139 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3140 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3142 /* check if prediction blocks A and C are available */
3143 v->a_avail = v->c_avail = 0;
3144 if(i == 2 || i == 3 || !s->first_slice_line)
3145 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3146 if(i == 1 || i == 3 || s->mb_x)
3147 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3149 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
3150 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3151 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3152 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3153 for(j = 0; j < 64; j++) s->block[i][j] += 128;
3154 if(!v->res_fasttx && v->res_x8) for(j = 0; j < 64; j++) s->block[i][j] += 16;
3155 s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3156 if(v->pq >= 9 && v->overlap) {
3158 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3160 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3163 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3164 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3166 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3167 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3174 for(i = 0; i < 6; i++) {
3175 v->mb_type[0][s->block_index[i]] = 0;
3176 s->dc_val[0][s->block_index[i]] = 0;
3178 s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
3179 s->current_picture.qscale_table[mb_pos] = 0;
3180 vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
3187 if (!skipped /* unskipped MB */)
3189 int intra_count = 0, coded_inter = 0;
3190 int is_intra[6], is_coded[6];
3192 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3195 val = ((cbp >> (5 - i)) & 1);
3196 s->dc_val[0][s->block_index[i]] = 0;
3203 GET_MVDATA(dmv_x, dmv_y);
3205 vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
3206 if(!s->mb_intra) vc1_mc_4mv_luma(v, i);
3207 intra_count += s->mb_intra;
3208 is_intra[i] = s->mb_intra;
3209 is_coded[i] = mb_has_coeffs;
3212 is_intra[i] = (intra_count >= 3);
3215 if(i == 4) vc1_mc_4mv_chroma(v);
3216 v->mb_type[0][s->block_index[i]] = is_intra[i];
3217 if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i];
3219 // if there are no coded blocks then don't do anything more
3220 if(!intra_count && !coded_inter) return 0;
3223 s->current_picture.qscale_table[mb_pos] = mquant;
3224 /* test if block is intra and has pred */
3229 if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
3230 || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
3235 if(intrapred)s->ac_pred = get_bits(gb, 1);
3236 else s->ac_pred = 0;
3238 if (!v->ttmbf && coded_inter)
3239 ttmb = get_vlc2(gb, vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3243 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3244 s->mb_intra = is_intra[i];
3246 /* check if prediction blocks A and C are available */
3247 v->a_avail = v->c_avail = 0;
3248 if(i == 2 || i == 3 || !s->first_slice_line)
3249 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3250 if(i == 1 || i == 3 || s->mb_x)
3251 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3253 vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset);
3254 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3255 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3256 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3257 for(j = 0; j < 64; j++) s->block[i][j] += 128;
3258 if(!v->res_fasttx && v->res_x8) for(j = 0; j < 64; j++) s->block[i][j] += 16;
3259 s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3260 if(v->pq >= 9 && v->overlap) {
3262 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3264 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3266 } else if(is_coded[i]) {
3267 status = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3268 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3270 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3271 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3279 s->current_picture.qscale_table[mb_pos] = 0;
3280 for (i=0; i<6; i++) {
3281 v->mb_type[0][s->block_index[i]] = 0;
3282 s->dc_val[0][s->block_index[i]] = 0;
3286 vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]);
3287 vc1_mc_4mv_luma(v, i);
3289 vc1_mc_4mv_chroma(v);
3290 s->current_picture.qscale_table[mb_pos] = 0;
3295 /* Should never happen */
3299 /** Decode one B-frame MB (in Main profile)
3301 static void vc1_decode_b_mb(VC1Context *v)
3303 MpegEncContext *s = &v->s;
3304 GetBitContext *gb = &s->gb;
3306 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3307 int cbp = 0; /* cbp decoding stuff */
3308 int mqdiff, mquant; /* MB quantization */
3309 int ttmb = v->ttfrm; /* MB Transform type */
3311 static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
3312 offset_table[6] = { 0, 1, 3, 7, 15, 31 };
3313 int mb_has_coeffs = 0; /* last_flag */
3314 int index, index1; /* LUT indices */
3315 int val, sign; /* temp values */
3316 int first_block = 1;
3318 int skipped, direct;
3319 int dmv_x[2], dmv_y[2];
3320 int bmvtype = BMV_TYPE_BACKWARD;
3322 mquant = v->pq; /* Loosy initialization */
3326 direct = get_bits1(gb);
3328 direct = v->direct_mb_plane[mb_pos];
3330 skipped = get_bits1(gb);
3332 skipped = v->s.mbskip_table[mb_pos];
3334 s->dsp.clear_blocks(s->block[0]);
3335 dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
3336 for(i = 0; i < 6; i++) {
3337 v->mb_type[0][s->block_index[i]] = 0;
3338 s->dc_val[0][s->block_index[i]] = 0;
3340 s->current_picture.qscale_table[mb_pos] = 0;
3344 GET_MVDATA(dmv_x[0], dmv_y[0]);
3345 dmv_x[1] = dmv_x[0];
3346 dmv_y[1] = dmv_y[0];
3348 if(skipped || !s->mb_intra) {
3349 bmvtype = decode012(gb);
3352 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
3355 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
3358 bmvtype = BMV_TYPE_INTERPOLATED;
3359 dmv_x[0] = dmv_y[0] = 0;
3363 for(i = 0; i < 6; i++)
3364 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3367 if(direct) bmvtype = BMV_TYPE_INTERPOLATED;
3368 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3369 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3373 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3377 s->current_picture.qscale_table[mb_pos] = mquant;
3379 ttmb = get_vlc2(gb, vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3380 dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
3381 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3382 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3384 if(!mb_has_coeffs && !s->mb_intra) {
3385 /* no coded blocks - effectively skipped */
3386 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3387 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3390 if(s->mb_intra && !mb_has_coeffs) {
3392 s->current_picture.qscale_table[mb_pos] = mquant;
3393 s->ac_pred = get_bits1(gb);
3395 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3397 if(bmvtype == BMV_TYPE_INTERPOLATED) {
3398 GET_MVDATA(dmv_x[0], dmv_y[0]);
3399 if(!mb_has_coeffs) {
3400 /* interpolated skipped block */
3401 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3402 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3406 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3408 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3411 s->ac_pred = get_bits1(gb);
3412 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3414 s->current_picture.qscale_table[mb_pos] = mquant;
3415 if(!v->ttmbf && !s->mb_intra && mb_has_coeffs)
3416 ttmb = get_vlc2(gb, vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3422 s->dc_val[0][s->block_index[i]] = 0;
3424 val = ((cbp >> (5 - i)) & 1);
3425 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3426 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3428 /* check if prediction blocks A and C are available */
3429 v->a_avail = v->c_avail = 0;
3430 if(i == 2 || i == 3 || !s->first_slice_line)
3431 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3432 if(i == 1 || i == 3 || s->mb_x)
3433 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3435 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
3436 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3437 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3438 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3439 for(j = 0; j < 64; j++) s->block[i][j] += 128;
3440 s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3442 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3443 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3445 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3446 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3451 /** Decode blocks of I-frame
3453 static void vc1_decode_i_blocks(VC1Context *v)
3456 MpegEncContext *s = &v->s;
3461 /* select codingmode used for VLC tables selection */
3462 switch(v->y_ac_table_index){
3464 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3467 v->codingset = CS_HIGH_MOT_INTRA;
3470 v->codingset = CS_MID_RATE_INTRA;
3474 switch(v->c_ac_table_index){
3476 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3479 v->codingset2 = CS_HIGH_MOT_INTER;
3482 v->codingset2 = CS_MID_RATE_INTER;
3486 /* Set DC scale - y and c use the same */
3487 s->y_dc_scale = s->y_dc_scale_table[v->pq];
3488 s->c_dc_scale = s->c_dc_scale_table[v->pq];
3491 s->mb_x = s->mb_y = 0;
3493 s->first_slice_line = 1;
3494 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3495 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3496 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3497 ff_init_block_index(s);
3498 ff_update_block_index(s);
3499 s->dsp.clear_blocks(s->block[0]);
3500 mb_pos = s->mb_x + s->mb_y * s->mb_width;
3501 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
3502 s->current_picture.qscale_table[mb_pos] = v->pq;
3503 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3504 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3506 // do actual MB decoding and displaying
3507 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
3508 v->s.ac_pred = get_bits(&v->s.gb, 1);
3510 for(k = 0; k < 6; k++) {
3511 val = ((cbp >> (5 - k)) & 1);
3514 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
3518 cbp |= val << (5 - k);
3520 vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
3522 s->dsp.vc1_inv_trans_8x8(s->block[k]);
3523 if(!v->res_fasttx && !v->res_x8) for(j = 0; j < 64; j++) s->block[k][j] -= 16;
3524 if(v->pq >= 9 && v->overlap) {
3525 for(j = 0; j < 64; j++) s->block[k][j] += 128;
3529 vc1_put_block(v, s->block);
3530 if(v->pq >= 9 && v->overlap) {
3532 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
3533 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3534 if(!(s->flags & CODEC_FLAG_GRAY)) {
3535 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
3536 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
3539 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
3540 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3541 if(!s->first_slice_line) {
3542 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
3543 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
3544 if(!(s->flags & CODEC_FLAG_GRAY)) {
3545 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
3546 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
3549 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3550 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3553 if(get_bits_count(&s->gb) > v->bits) {
3554 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
3558 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3559 s->first_slice_line = 0;
3563 /** Decode blocks of I-frame for advanced profile
3565 static void vc1_decode_i_blocks_adv(VC1Context *v)
3568 MpegEncContext *s = &v->s;
3575 GetBitContext *gb = &s->gb;
3577 /* select codingmode used for VLC tables selection */
3578 switch(v->y_ac_table_index){
3580 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3583 v->codingset = CS_HIGH_MOT_INTRA;
3586 v->codingset = CS_MID_RATE_INTRA;
3590 switch(v->c_ac_table_index){
3592 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3595 v->codingset2 = CS_HIGH_MOT_INTER;
3598 v->codingset2 = CS_MID_RATE_INTER;
3603 s->mb_x = s->mb_y = 0;
3605 s->first_slice_line = 1;
3606 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3607 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3608 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3609 ff_init_block_index(s);
3610 ff_update_block_index(s);
3611 s->dsp.clear_blocks(s->block[0]);
3612 mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3613 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
3614 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3615 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3617 // do actual MB decoding and displaying
3618 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
3619 if(v->acpred_is_raw)
3620 v->s.ac_pred = get_bits(&v->s.gb, 1);
3622 v->s.ac_pred = v->acpred_plane[mb_pos];
3624 if(v->condover == CONDOVER_SELECT) {
3625 if(v->overflg_is_raw)
3626 overlap = get_bits(&v->s.gb, 1);
3628 overlap = v->over_flags_plane[mb_pos];
3630 overlap = (v->condover == CONDOVER_ALL);
3634 s->current_picture.qscale_table[mb_pos] = mquant;
3635 /* Set DC scale - y and c use the same */
3636 s->y_dc_scale = s->y_dc_scale_table[mquant];
3637 s->c_dc_scale = s->c_dc_scale_table[mquant];
3639 for(k = 0; k < 6; k++) {
3640 val = ((cbp >> (5 - k)) & 1);
3643 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
3647 cbp |= val << (5 - k);
3649 v->a_avail = !s->first_slice_line || (k==2 || k==3);
3650 v->c_avail = !!s->mb_x || (k==1 || k==3);
3652 vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant);
3654 s->dsp.vc1_inv_trans_8x8(s->block[k]);
3655 for(j = 0; j < 64; j++) s->block[k][j] += 128;
3658 vc1_put_block(v, s->block);
3661 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
3662 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3663 if(!(s->flags & CODEC_FLAG_GRAY)) {
3664 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
3665 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
3668 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
3669 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3670 if(!s->first_slice_line) {
3671 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
3672 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
3673 if(!(s->flags & CODEC_FLAG_GRAY)) {
3674 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
3675 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
3678 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3679 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3682 if(get_bits_count(&s->gb) > v->bits) {
3683 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
3687 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3688 s->first_slice_line = 0;
3692 static void vc1_decode_p_blocks(VC1Context *v)
3694 MpegEncContext *s = &v->s;
3696 /* select codingmode used for VLC tables selection */
3697 switch(v->c_ac_table_index){
3699 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3702 v->codingset = CS_HIGH_MOT_INTRA;
3705 v->codingset = CS_MID_RATE_INTRA;
3709 switch(v->c_ac_table_index){
3711 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3714 v->codingset2 = CS_HIGH_MOT_INTER;
3717 v->codingset2 = CS_MID_RATE_INTER;
3721 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3722 s->first_slice_line = 1;
3723 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3724 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3725 ff_init_block_index(s);
3726 ff_update_block_index(s);
3727 s->dsp.clear_blocks(s->block[0]);
3730 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
3731 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);
3735 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3736 s->first_slice_line = 0;
3740 static void vc1_decode_b_blocks(VC1Context *v)
3742 MpegEncContext *s = &v->s;
3744 /* select codingmode used for VLC tables selection */
3745 switch(v->c_ac_table_index){
3747 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3750 v->codingset = CS_HIGH_MOT_INTRA;
3753 v->codingset = CS_MID_RATE_INTRA;
3757 switch(v->c_ac_table_index){
3759 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3762 v->codingset2 = CS_HIGH_MOT_INTER;
3765 v->codingset2 = CS_MID_RATE_INTER;
3769 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3770 s->first_slice_line = 1;
3771 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3772 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3773 ff_init_block_index(s);
3774 ff_update_block_index(s);
3775 s->dsp.clear_blocks(s->block[0]);
3778 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
3779 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);
3783 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3784 s->first_slice_line = 0;
3788 static void vc1_decode_skip_blocks(VC1Context *v)
3790 MpegEncContext *s = &v->s;
3792 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3793 s->first_slice_line = 1;
3794 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3796 ff_init_block_index(s);
3797 ff_update_block_index(s);
3798 memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
3799 memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
3800 memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
3801 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3802 s->first_slice_line = 0;
3804 s->pict_type = P_TYPE;
3807 static void vc1_decode_blocks(VC1Context *v)
3810 v->s.esc3_level_length = 0;
3812 switch(v->s.pict_type) {
3814 if(v->profile == PROFILE_ADVANCED)
3815 vc1_decode_i_blocks_adv(v);
3817 vc1_decode_i_blocks(v);
3820 if(v->p_frame_skipped)
3821 vc1_decode_skip_blocks(v);
3823 vc1_decode_p_blocks(v);
3827 if(v->profile == PROFILE_ADVANCED)
3828 vc1_decode_i_blocks_adv(v);
3830 vc1_decode_i_blocks(v);
3832 vc1_decode_b_blocks(v);
3837 /** Find VC-1 marker in buffer
3838 * @return position where next marker starts or end of buffer if no marker found
3840 static av_always_inline uint8_t* find_next_marker(uint8_t *src, uint8_t *end)
3842 uint32_t mrk = 0xFFFFFFFF;
3844 if(end-src < 4) return end;
3846 mrk = (mrk << 8) | *src++;
3853 static av_always_inline int vc1_unescape_buffer(uint8_t *src, int size, uint8_t *dst)
3858 for(dsize = 0; dsize < size; dsize++) *dst++ = *src++;
3861 for(i = 0; i < size; i++, src++) {
3862 if(src[0] == 3 && i >= 2 && !src[-1] && !src[-2] && i < size-1 && src[1] < 4) {
3863 dst[dsize++] = src[1];
3867 dst[dsize++] = *src;
3872 /** Initialize a VC1/WMV3 decoder
3873 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3874 * @todo TODO: Decypher remaining bits in extra_data
3876 static int vc1_decode_init(AVCodecContext *avctx)
3878 VC1Context *v = avctx->priv_data;
3879 MpegEncContext *s = &v->s;
3882 if (!avctx->extradata_size || !avctx->extradata) return -1;
3883 if (!(avctx->flags & CODEC_FLAG_GRAY))
3884 avctx->pix_fmt = PIX_FMT_YUV420P;
3886 avctx->pix_fmt = PIX_FMT_GRAY8;
3888 avctx->flags |= CODEC_FLAG_EMU_EDGE;
3889 v->s.flags |= CODEC_FLAG_EMU_EDGE;
3891 if(ff_h263_decode_init(avctx) < 0)
3893 if (vc1_init_common(v) < 0) return -1;
3895 avctx->coded_width = avctx->width;
3896 avctx->coded_height = avctx->height;
3897 if (avctx->codec_id == CODEC_ID_WMV3)
3901 // looks like WMV3 has a sequence header stored in the extradata
3902 // advanced sequence header may be before the first frame
3903 // the last byte of the extradata is a version number, 1 for the
3904 // samples we can decode
3906 init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
3908 if (decode_sequence_header(avctx, &gb) < 0)
3911 count = avctx->extradata_size*8 - get_bits_count(&gb);
3914 av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
3915 count, get_bits(&gb, count));
3919 av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
3921 } else { // VC1/WVC1
3922 uint8_t *start = avctx->extradata, *end = avctx->extradata + avctx->extradata_size;
3923 uint8_t *next; int size, buf2_size;
3924 uint8_t *buf2 = NULL;
3925 int seq_inited = 0, ep_inited = 0;
3927 if(avctx->extradata_size < 16) {
3928 av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
3932 buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
3933 if(start[0]) start++; // in WVC1 extradata first byte is its size
3935 for(; next < end; start = next){
3936 next = find_next_marker(start + 4, end);
3937 size = next - start - 4;
3938 if(size <= 0) continue;
3939 buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
3940 init_get_bits(&gb, buf2, buf2_size * 8);
3941 switch(AV_RB32(start)){
3942 case VC1_CODE_SEQHDR:
3943 if(decode_sequence_header(avctx, &gb) < 0){
3949 case VC1_CODE_ENTRYPOINT:
3950 if(decode_entry_point(avctx, &gb) < 0){
3959 if(!seq_inited || !ep_inited){
3960 av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
3964 avctx->has_b_frames= !!(avctx->max_b_frames);
3965 s->low_delay = !avctx->has_b_frames;
3967 s->mb_width = (avctx->coded_width+15)>>4;
3968 s->mb_height = (avctx->coded_height+15)>>4;
3970 /* Allocate mb bitplanes */
3971 v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3972 v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3973 v->acpred_plane = av_malloc(s->mb_stride * s->mb_height);
3974 v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height);
3976 /* allocate block type info in that way so it could be used with s->block_index[] */
3977 v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
3978 v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
3979 v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1;
3980 v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1);
3982 /* Init coded blocks info */
3983 if (v->profile == PROFILE_ADVANCED)
3985 // if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
3987 // if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
3995 /** Decode a VC1/WMV3 frame
3996 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3998 static int vc1_decode_frame(AVCodecContext *avctx,
3999 void *data, int *data_size,
4000 uint8_t *buf, int buf_size)
4002 VC1Context *v = avctx->priv_data;
4003 MpegEncContext *s = &v->s;
4004 AVFrame *pict = data;
4005 uint8_t *buf2 = NULL;
4007 /* no supplementary picture */
4008 if (buf_size == 0) {
4009 /* special case for last picture */
4010 if (s->low_delay==0 && s->next_picture_ptr) {
4011 *pict= *(AVFrame*)s->next_picture_ptr;
4012 s->next_picture_ptr= NULL;
4014 *data_size = sizeof(AVFrame);
4020 //we need to set current_picture_ptr before reading the header, otherwise we cant store anyting im there
4021 if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
4022 int i= ff_find_unused_picture(s, 0);
4023 s->current_picture_ptr= &s->picture[i];
4026 //for advanced profile we may need to parse and unescape data
4027 if (avctx->codec_id == CODEC_ID_VC1) {
4029 buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
4031 if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
4032 uint8_t *start, *end, *next;
4036 for(start = buf, end = buf + buf_size; next < end; start = next){
4037 next = find_next_marker(start + 4, end);
4038 size = next - start - 4;
4039 if(size <= 0) continue;
4040 switch(AV_RB32(start)){
4041 case VC1_CODE_FRAME:
4042 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
4044 case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
4045 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
4046 init_get_bits(&s->gb, buf2, buf_size2*8);
4047 decode_entry_point(avctx, &s->gb);
4049 case VC1_CODE_SLICE:
4050 av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n");
4055 }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
4058 divider = find_next_marker(buf, buf + buf_size);
4059 if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
4060 av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
4064 buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
4066 av_free(buf2);return -1;
4068 buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
4070 init_get_bits(&s->gb, buf2, buf_size2*8);
4072 init_get_bits(&s->gb, buf, buf_size*8);
4073 // do parse frame header
4074 if(v->profile < PROFILE_ADVANCED) {
4075 if(vc1_parse_frame_header(v, &s->gb) == -1) {
4080 if(vc1_parse_frame_header_adv(v, &s->gb) == -1) {
4086 if(s->pict_type != I_TYPE && !v->res_rtm_flag){
4092 s->current_picture.pict_type= s->pict_type;
4093 s->current_picture.key_frame= s->pict_type == I_TYPE;
4095 /* skip B-frames if we don't have reference frames */
4096 if(s->last_picture_ptr==NULL && (s->pict_type==B_TYPE || s->dropable)){
4098 return -1;//buf_size;
4100 /* skip b frames if we are in a hurry */
4101 if(avctx->hurry_up && s->pict_type==B_TYPE) return -1;//buf_size;
4102 if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==B_TYPE)
4103 || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=I_TYPE)
4104 || avctx->skip_frame >= AVDISCARD_ALL) {
4108 /* skip everything if we are in a hurry>=5 */
4109 if(avctx->hurry_up>=5) {
4111 return -1;//buf_size;
4114 if(s->next_p_frame_damaged){
4115 if(s->pict_type==B_TYPE)
4118 s->next_p_frame_damaged=0;
4121 if(MPV_frame_start(s, avctx) < 0) {
4126 ff_er_frame_start(s);
4128 v->bits = buf_size * 8;
4129 vc1_decode_blocks(v);
4130 //av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8);
4131 // if(get_bits_count(&s->gb) > buf_size * 8)
4137 assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
4138 assert(s->current_picture.pict_type == s->pict_type);
4139 if (s->pict_type == B_TYPE || s->low_delay) {
4140 *pict= *(AVFrame*)s->current_picture_ptr;
4141 } else if (s->last_picture_ptr != NULL) {
4142 *pict= *(AVFrame*)s->last_picture_ptr;
4145 if(s->last_picture_ptr || s->low_delay){
4146 *data_size = sizeof(AVFrame);
4147 ff_print_debug_info(s, pict);
4150 /* Return the Picture timestamp as the frame number */
4151 /* we substract 1 because it is added on utils.c */
4152 avctx->frame_number = s->picture_number - 1;
4159 /** Close a VC1/WMV3 decoder
4160 * @warning Initial try at using MpegEncContext stuff
4162 static int vc1_decode_end(AVCodecContext *avctx)
4164 VC1Context *v = avctx->priv_data;
4166 av_freep(&v->hrd_rate);
4167 av_freep(&v->hrd_buffer);
4168 MPV_common_end(&v->s);
4169 av_freep(&v->mv_type_mb_plane);
4170 av_freep(&v->direct_mb_plane);
4171 av_freep(&v->acpred_plane);
4172 av_freep(&v->over_flags_plane);
4173 av_freep(&v->mb_type_base);
4178 AVCodec vc1_decoder = {
4191 AVCodec wmv3_decoder = {