2 * VC-1 and WMV3 decoder
3 * Copyright (c) 2006-2007 Konstantin Shishkov
4 * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 * VC-1 and WMV3 decoder
30 #include "mpegvideo.h"
33 #include "vc1acdata.h"
34 #include "msmpeg4data.h"
40 #define MB_INTRA_VLC_BITS 9
43 static const uint16_t table_mb_intra[64][2];
46 static inline int decode210(GetBitContext *gb){
50 return 2 - get_bits1(gb);
54 * Init VC-1 specific tables and VC1Context members
55 * @param v The VC1Context to initialize
58 static int vc1_init_common(VC1Context *v)
63 v->hrd_rate = v->hrd_buffer = NULL;
69 init_vlc(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
70 ff_vc1_bfraction_bits, 1, 1,
71 ff_vc1_bfraction_codes, 1, 1, 1);
72 init_vlc(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
73 ff_vc1_norm2_bits, 1, 1,
74 ff_vc1_norm2_codes, 1, 1, 1);
75 init_vlc(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
76 ff_vc1_norm6_bits, 1, 1,
77 ff_vc1_norm6_codes, 2, 2, 1);
78 init_vlc(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
79 ff_vc1_imode_bits, 1, 1,
80 ff_vc1_imode_codes, 1, 1, 1);
83 init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
84 ff_vc1_ttmb_bits[i], 1, 1,
85 ff_vc1_ttmb_codes[i], 2, 2, 1);
86 init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
87 ff_vc1_ttblk_bits[i], 1, 1,
88 ff_vc1_ttblk_codes[i], 1, 1, 1);
89 init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
90 ff_vc1_subblkpat_bits[i], 1, 1,
91 ff_vc1_subblkpat_codes[i], 1, 1, 1);
95 init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
96 ff_vc1_4mv_block_pattern_bits[i], 1, 1,
97 ff_vc1_4mv_block_pattern_codes[i], 1, 1, 1);
98 init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
99 ff_vc1_cbpcy_p_bits[i], 1, 1,
100 ff_vc1_cbpcy_p_codes[i], 2, 2, 1);
101 init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
102 ff_vc1_mv_diff_bits[i], 1, 1,
103 ff_vc1_mv_diff_codes[i], 2, 2, 1);
106 init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i],
107 &vc1_ac_tables[i][0][1], 8, 4,
108 &vc1_ac_tables[i][0][0], 8, 4, 1);
109 init_vlc(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64,
110 &ff_msmp4_mb_i_table[0][1], 4, 2,
111 &ff_msmp4_mb_i_table[0][0], 4, 2, 1);
116 v->mvrange = 0; /* 7.1.1.18, p80 */
121 /***********************************************************************/
123 * @defgroup bitplane VC9 Bitplane decoding
128 /** @addtogroup bitplane
141 /** @} */ //imode defines
143 /** Decode rows by checking if they are skipped
144 * @param plane Buffer to store decoded bits
145 * @param[in] width Width of this buffer
146 * @param[in] height Height of this buffer
147 * @param[in] stride of this buffer
149 static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
152 for (y=0; y<height; y++){
153 if (!get_bits1(gb)) //rowskip
154 memset(plane, 0, width);
156 for (x=0; x<width; x++)
157 plane[x] = get_bits1(gb);
162 /** Decode columns by checking if they are skipped
163 * @param plane Buffer to store decoded bits
164 * @param[in] width Width of this buffer
165 * @param[in] height Height of this buffer
166 * @param[in] stride of this buffer
167 * @todo FIXME: Optimize
169 static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
172 for (x=0; x<width; x++){
173 if (!get_bits1(gb)) //colskip
174 for (y=0; y<height; y++)
177 for (y=0; y<height; y++)
178 plane[y*stride] = get_bits1(gb);
183 /** Decode a bitplane's bits
184 * @param bp Bitplane where to store the decode bits
185 * @param v VC-1 context for bit reading and logging
187 * @todo FIXME: Optimize
189 static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
191 GetBitContext *gb = &v->s.gb;
193 int imode, x, y, code, offset;
194 uint8_t invert, *planep = data;
195 int width, height, stride;
197 width = v->s.mb_width;
198 height = v->s.mb_height;
199 stride = v->s.mb_stride;
200 invert = get_bits1(gb);
201 imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);
207 //Data is actually read in the MB layer (same for all tests == "raw")
208 *raw_flag = 1; //invert ignored
212 if ((height * width) & 1)
214 *planep++ = get_bits1(gb);
218 // decode bitplane as one long line
219 for (y = offset; y < height * width; y += 2) {
220 code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);
221 *planep++ = code & 1;
223 if(offset == width) {
225 planep += stride - width;
227 *planep++ = code >> 1;
229 if(offset == width) {
231 planep += stride - width;
237 if(!(height % 3) && (width % 3)) { // use 2x3 decoding
238 for(y = 0; y < height; y+= 3) {
239 for(x = width & 1; x < width; x += 2) {
240 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
242 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
245 planep[x + 0] = (code >> 0) & 1;
246 planep[x + 1] = (code >> 1) & 1;
247 planep[x + 0 + stride] = (code >> 2) & 1;
248 planep[x + 1 + stride] = (code >> 3) & 1;
249 planep[x + 0 + stride * 2] = (code >> 4) & 1;
250 planep[x + 1 + stride * 2] = (code >> 5) & 1;
252 planep += stride * 3;
254 if(width & 1) decode_colskip(data, 1, height, stride, &v->s.gb);
256 planep += (height & 1) * stride;
257 for(y = height & 1; y < height; y += 2) {
258 for(x = width % 3; x < width; x += 3) {
259 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
261 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
264 planep[x + 0] = (code >> 0) & 1;
265 planep[x + 1] = (code >> 1) & 1;
266 planep[x + 2] = (code >> 2) & 1;
267 planep[x + 0 + stride] = (code >> 3) & 1;
268 planep[x + 1 + stride] = (code >> 4) & 1;
269 planep[x + 2 + stride] = (code >> 5) & 1;
271 planep += stride * 2;
274 if(x) decode_colskip(data , x, height , stride, &v->s.gb);
275 if(height & 1) decode_rowskip(data+x, width - x, 1, stride, &v->s.gb);
279 decode_rowskip(data, width, height, stride, &v->s.gb);
282 decode_colskip(data, width, height, stride, &v->s.gb);
287 /* Applying diff operator */
288 if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6)
292 for (x=1; x<width; x++)
293 planep[x] ^= planep[x-1];
294 for (y=1; y<height; y++)
297 planep[0] ^= planep[-stride];
298 for (x=1; x<width; x++)
300 if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
301 else planep[x] ^= planep[x-1];
308 for (x=0; x<stride*height; x++) planep[x] = !planep[x]; //FIXME stride
310 return (imode<<1) + invert;
313 /** @} */ //Bitplane group
315 /***********************************************************************/
316 /** VOP Dquant decoding
317 * @param v VC-1 Context
319 static int vop_dquant_decoding(VC1Context *v)
321 GetBitContext *gb = &v->s.gb;
327 pqdiff = get_bits(gb, 3);
328 if (pqdiff == 7) v->altpq = get_bits(gb, 5);
329 else v->altpq = v->pq + pqdiff + 1;
333 v->dquantfrm = get_bits1(gb);
336 v->dqprofile = get_bits(gb, 2);
337 switch (v->dqprofile)
339 case DQPROFILE_SINGLE_EDGE:
340 case DQPROFILE_DOUBLE_EDGES:
341 v->dqsbedge = get_bits(gb, 2);
343 case DQPROFILE_ALL_MBS:
344 v->dqbilevel = get_bits1(gb);
347 default: break; //Forbidden ?
349 if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS)
351 pqdiff = get_bits(gb, 3);
352 if (pqdiff == 7) v->altpq = get_bits(gb, 5);
353 else v->altpq = v->pq + pqdiff + 1;
360 /** Put block onto picture
362 static void vc1_put_block(VC1Context *v, DCTELEM block[6][64])
366 DSPContext *dsp = &v->s.dsp;
370 for(k = 0; k < 6; k++)
371 for(j = 0; j < 8; j++)
372 for(i = 0; i < 8; i++)
373 block[k][i + j*8] = ((block[k][i + j*8] - 128) << 1) + 128;
376 ys = v->s.current_picture.linesize[0];
377 us = v->s.current_picture.linesize[1];
378 vs = v->s.current_picture.linesize[2];
381 dsp->put_pixels_clamped(block[0], Y, ys);
382 dsp->put_pixels_clamped(block[1], Y + 8, ys);
384 dsp->put_pixels_clamped(block[2], Y, ys);
385 dsp->put_pixels_clamped(block[3], Y + 8, ys);
387 if(!(v->s.flags & CODEC_FLAG_GRAY)) {
388 dsp->put_pixels_clamped(block[4], v->s.dest[1], us);
389 dsp->put_pixels_clamped(block[5], v->s.dest[2], vs);
393 /** Do motion compensation over 1 macroblock
394 * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
396 static void vc1_mc_1mv(VC1Context *v, int dir)
398 MpegEncContext *s = &v->s;
399 DSPContext *dsp = &v->s.dsp;
400 uint8_t *srcY, *srcU, *srcV;
401 int dxy, uvdxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
403 if(!v->s.last_picture.data[0])return;
405 mx = s->mv[dir][0][0];
406 my = s->mv[dir][0][1];
408 // store motion vectors for further use in B frames
409 if(s->pict_type == P_TYPE) {
410 s->current_picture.motion_val[1][s->block_index[0]][0] = mx;
411 s->current_picture.motion_val[1][s->block_index[0]][1] = my;
413 uvmx = (mx + ((mx & 3) == 3)) >> 1;
414 uvmy = (my + ((my & 3) == 3)) >> 1;
416 uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
417 uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
420 srcY = s->last_picture.data[0];
421 srcU = s->last_picture.data[1];
422 srcV = s->last_picture.data[2];
424 srcY = s->next_picture.data[0];
425 srcU = s->next_picture.data[1];
426 srcV = s->next_picture.data[2];
429 src_x = s->mb_x * 16 + (mx >> 2);
430 src_y = s->mb_y * 16 + (my >> 2);
431 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
432 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
434 if(v->profile != PROFILE_ADVANCED){
435 src_x = av_clip( src_x, -16, s->mb_width * 16);
436 src_y = av_clip( src_y, -16, s->mb_height * 16);
437 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
438 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
440 src_x = av_clip( src_x, -17, s->avctx->coded_width);
441 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
442 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
443 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
446 srcY += src_y * s->linesize + src_x;
447 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
448 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
450 /* for grayscale we should not try to read from unknown area */
451 if(s->flags & CODEC_FLAG_GRAY) {
452 srcU = s->edge_emu_buffer + 18 * s->linesize;
453 srcV = s->edge_emu_buffer + 18 * s->linesize;
456 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
457 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
458 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
459 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
461 srcY -= s->mspel * (1 + s->linesize);
462 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
463 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
464 srcY = s->edge_emu_buffer;
465 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
466 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
467 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
468 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
471 /* if we deal with range reduction we need to scale source blocks */
477 for(j = 0; j < 17 + s->mspel*2; j++) {
478 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
481 src = srcU; src2 = srcV;
482 for(j = 0; j < 9; j++) {
483 for(i = 0; i < 9; i++) {
484 src[i] = ((src[i] - 128) >> 1) + 128;
485 src2[i] = ((src2[i] - 128) >> 1) + 128;
487 src += s->uvlinesize;
488 src2 += s->uvlinesize;
491 /* if we deal with intensity compensation we need to scale source blocks */
492 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
497 for(j = 0; j < 17 + s->mspel*2; j++) {
498 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = v->luty[src[i]];
501 src = srcU; src2 = srcV;
502 for(j = 0; j < 9; j++) {
503 for(i = 0; i < 9; i++) {
504 src[i] = v->lutuv[src[i]];
505 src2[i] = v->lutuv[src2[i]];
507 src += s->uvlinesize;
508 src2 += s->uvlinesize;
511 srcY += s->mspel * (1 + s->linesize);
515 dxy = ((my & 3) << 2) | (mx & 3);
516 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
517 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
518 srcY += s->linesize * 8;
519 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd);
520 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
521 } else { // hpel mc - always used for luma
522 dxy = (my & 2) | ((mx & 2) >> 1);
525 dsp->put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
527 dsp->put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
530 if(s->flags & CODEC_FLAG_GRAY) return;
531 /* Chroma MC always uses qpel bilinear */
532 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
536 dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
537 dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
539 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
540 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
544 /** Do motion compensation for 4-MV macroblock - luminance block
546 static void vc1_mc_4mv_luma(VC1Context *v, int n)
548 MpegEncContext *s = &v->s;
549 DSPContext *dsp = &v->s.dsp;
551 int dxy, mx, my, src_x, src_y;
554 if(!v->s.last_picture.data[0])return;
557 srcY = s->last_picture.data[0];
559 off = s->linesize * 4 * (n&2) + (n&1) * 8;
561 src_x = s->mb_x * 16 + (n&1) * 8 + (mx >> 2);
562 src_y = s->mb_y * 16 + (n&2) * 4 + (my >> 2);
564 if(v->profile != PROFILE_ADVANCED){
565 src_x = av_clip( src_x, -16, s->mb_width * 16);
566 src_y = av_clip( src_y, -16, s->mb_height * 16);
568 src_x = av_clip( src_x, -17, s->avctx->coded_width);
569 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
572 srcY += src_y * s->linesize + src_x;
574 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
575 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 8 - s->mspel*2
576 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 8 - s->mspel*2){
577 srcY -= s->mspel * (1 + s->linesize);
578 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 9+s->mspel*2, 9+s->mspel*2,
579 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
580 srcY = s->edge_emu_buffer;
581 /* if we deal with range reduction we need to scale source blocks */
587 for(j = 0; j < 9 + s->mspel*2; j++) {
588 for(i = 0; i < 9 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
592 /* if we deal with intensity compensation we need to scale source blocks */
593 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
598 for(j = 0; j < 9 + s->mspel*2; j++) {
599 for(i = 0; i < 9 + s->mspel*2; i++) src[i] = v->luty[src[i]];
603 srcY += s->mspel * (1 + s->linesize);
607 dxy = ((my & 3) << 2) | (mx & 3);
608 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, v->rnd);
609 } else { // hpel mc - always used for luma
610 dxy = (my & 2) | ((mx & 2) >> 1);
612 dsp->put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
614 dsp->put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
618 static inline int median4(int a, int b, int c, int d)
621 if(c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2;
622 else return (FFMIN(b, c) + FFMAX(a, d)) / 2;
624 if(c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2;
625 else return (FFMIN(a, c) + FFMAX(b, d)) / 2;
630 /** Do motion compensation for 4-MV macroblock - both chroma blocks
632 static void vc1_mc_4mv_chroma(VC1Context *v)
634 MpegEncContext *s = &v->s;
635 DSPContext *dsp = &v->s.dsp;
636 uint8_t *srcU, *srcV;
637 int uvdxy, uvmx, uvmy, uvsrc_x, uvsrc_y;
638 int i, idx, tx = 0, ty = 0;
639 int mvx[4], mvy[4], intra[4];
640 static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
642 if(!v->s.last_picture.data[0])return;
643 if(s->flags & CODEC_FLAG_GRAY) return;
645 for(i = 0; i < 4; i++) {
646 mvx[i] = s->mv[0][i][0];
647 mvy[i] = s->mv[0][i][1];
648 intra[i] = v->mb_type[0][s->block_index[i]];
651 /* calculate chroma MV vector from four luma MVs */
652 idx = (intra[3] << 3) | (intra[2] << 2) | (intra[1] << 1) | intra[0];
653 if(!idx) { // all blocks are inter
654 tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]);
655 ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]);
656 } else if(count[idx] == 1) { // 3 inter blocks
659 tx = mid_pred(mvx[1], mvx[2], mvx[3]);
660 ty = mid_pred(mvy[1], mvy[2], mvy[3]);
663 tx = mid_pred(mvx[0], mvx[2], mvx[3]);
664 ty = mid_pred(mvy[0], mvy[2], mvy[3]);
667 tx = mid_pred(mvx[0], mvx[1], mvx[3]);
668 ty = mid_pred(mvy[0], mvy[1], mvy[3]);
671 tx = mid_pred(mvx[0], mvx[1], mvx[2]);
672 ty = mid_pred(mvy[0], mvy[1], mvy[2]);
675 } else if(count[idx] == 2) {
677 for(i=0; i<3;i++) if(!intra[i]) {t1 = i; break;}
678 for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;}
679 tx = (mvx[t1] + mvx[t2]) / 2;
680 ty = (mvy[t1] + mvy[t2]) / 2;
682 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
683 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
684 return; //no need to do MC for inter blocks
687 s->current_picture.motion_val[1][s->block_index[0]][0] = tx;
688 s->current_picture.motion_val[1][s->block_index[0]][1] = ty;
689 uvmx = (tx + ((tx&3) == 3)) >> 1;
690 uvmy = (ty + ((ty&3) == 3)) >> 1;
692 uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
693 uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
696 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
697 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
699 if(v->profile != PROFILE_ADVANCED){
700 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
701 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
703 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
704 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
707 srcU = s->last_picture.data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
708 srcV = s->last_picture.data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
709 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
710 || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
711 || (unsigned)uvsrc_y > (s->v_edge_pos >> 1) - 9){
712 ff_emulated_edge_mc(s->edge_emu_buffer , srcU, s->uvlinesize, 8+1, 8+1,
713 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
714 ff_emulated_edge_mc(s->edge_emu_buffer + 16, srcV, s->uvlinesize, 8+1, 8+1,
715 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
716 srcU = s->edge_emu_buffer;
717 srcV = s->edge_emu_buffer + 16;
719 /* if we deal with range reduction we need to scale source blocks */
724 src = srcU; src2 = srcV;
725 for(j = 0; j < 9; j++) {
726 for(i = 0; i < 9; i++) {
727 src[i] = ((src[i] - 128) >> 1) + 128;
728 src2[i] = ((src2[i] - 128) >> 1) + 128;
730 src += s->uvlinesize;
731 src2 += s->uvlinesize;
734 /* if we deal with intensity compensation we need to scale source blocks */
735 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
739 src = srcU; src2 = srcV;
740 for(j = 0; j < 9; j++) {
741 for(i = 0; i < 9; i++) {
742 src[i] = v->lutuv[src[i]];
743 src2[i] = v->lutuv[src2[i]];
745 src += s->uvlinesize;
746 src2 += s->uvlinesize;
751 /* Chroma MC always uses qpel bilinear */
752 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
756 dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
757 dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
759 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
760 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
764 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
767 * Decode Simple/Main Profiles sequence header
768 * @see Figure 7-8, p16-17
769 * @param avctx Codec context
770 * @param gb GetBit context initialized from Codec context extra_data
773 static int decode_sequence_header(AVCodecContext *avctx, GetBitContext *gb)
775 VC1Context *v = avctx->priv_data;
777 av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32));
778 v->profile = get_bits(gb, 2);
779 if (v->profile == PROFILE_COMPLEX)
781 av_log(avctx, AV_LOG_ERROR, "WMV3 Complex Profile is not fully supported\n");
784 if (v->profile == PROFILE_ADVANCED)
786 return decode_sequence_header_adv(v, gb);
790 v->res_sm = get_bits(gb, 2); //reserved
793 av_log(avctx, AV_LOG_ERROR,
794 "Reserved RES_SM=%i is forbidden\n", v->res_sm);
800 v->frmrtq_postproc = get_bits(gb, 3); //common
801 // (bitrate-32kbps)/64kbps
802 v->bitrtq_postproc = get_bits(gb, 5); //common
803 v->s.loop_filter = get_bits1(gb); //common
804 if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE)
806 av_log(avctx, AV_LOG_ERROR,
807 "LOOPFILTER shell not be enabled in simple profile\n");
810 v->res_x8 = get_bits1(gb); //reserved
813 av_log(avctx, AV_LOG_ERROR,
814 "1 for reserved RES_X8 is forbidden\n");
817 v->multires = get_bits1(gb);
818 v->res_fasttx = get_bits1(gb);
821 av_log(avctx, AV_LOG_ERROR,
822 "0 for reserved RES_FASTTX is forbidden\n");
826 v->fastuvmc = get_bits1(gb); //common
827 if (!v->profile && !v->fastuvmc)
829 av_log(avctx, AV_LOG_ERROR,
830 "FASTUVMC unavailable in Simple Profile\n");
833 v->extended_mv = get_bits1(gb); //common
834 if (!v->profile && v->extended_mv)
836 av_log(avctx, AV_LOG_ERROR,
837 "Extended MVs unavailable in Simple Profile\n");
840 v->dquant = get_bits(gb, 2); //common
841 v->vstransform = get_bits1(gb); //common
843 v->res_transtab = get_bits1(gb);
846 av_log(avctx, AV_LOG_ERROR,
847 "1 for reserved RES_TRANSTAB is forbidden\n");
851 v->overlap = get_bits1(gb); //common
853 v->s.resync_marker = get_bits1(gb);
854 v->rangered = get_bits1(gb);
855 if (v->rangered && v->profile == PROFILE_SIMPLE)
857 av_log(avctx, AV_LOG_INFO,
858 "RANGERED should be set to 0 in simple profile\n");
861 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
862 v->quantizer_mode = get_bits(gb, 2); //common
864 v->finterpflag = get_bits1(gb); //common
865 v->res_rtm_flag = get_bits1(gb); //reserved
866 if (!v->res_rtm_flag)
868 // av_log(avctx, AV_LOG_ERROR,
869 // "0 for reserved RES_RTM_FLAG is forbidden\n");
870 av_log(avctx, AV_LOG_ERROR,
871 "Old WMV3 version detected, only I-frames will be decoded\n");
874 //TODO: figure out what they mean (always 0x402F)
875 if(!v->res_fasttx) skip_bits(gb, 16);
876 av_log(avctx, AV_LOG_DEBUG,
877 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
878 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
879 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
880 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
881 v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
882 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
883 v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
884 v->dquant, v->quantizer_mode, avctx->max_b_frames
889 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
892 v->level = get_bits(gb, 3);
895 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
897 v->chromaformat = get_bits(gb, 2);
898 if (v->chromaformat != 1)
900 av_log(v->s.avctx, AV_LOG_ERROR,
901 "Only 4:2:0 chroma format supported\n");
906 v->frmrtq_postproc = get_bits(gb, 3); //common
907 // (bitrate-32kbps)/64kbps
908 v->bitrtq_postproc = get_bits(gb, 5); //common
909 v->postprocflag = get_bits1(gb); //common
911 v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
912 v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
913 v->s.avctx->width = v->s.avctx->coded_width;
914 v->s.avctx->height = v->s.avctx->coded_height;
915 v->broadcast = get_bits1(gb);
916 v->interlace = get_bits1(gb);
917 v->tfcntrflag = get_bits1(gb);
918 v->finterpflag = get_bits1(gb);
919 skip_bits1(gb); // reserved
921 v->s.h_edge_pos = v->s.avctx->coded_width;
922 v->s.v_edge_pos = v->s.avctx->coded_height;
924 av_log(v->s.avctx, AV_LOG_DEBUG,
925 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
926 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
927 "TFCTRflag=%i, FINTERPflag=%i\n",
928 v->level, v->frmrtq_postproc, v->bitrtq_postproc,
929 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
930 v->tfcntrflag, v->finterpflag
933 v->psf = get_bits1(gb);
934 if(v->psf) { //PsF, 6.1.13
935 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
938 v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
939 if(get_bits1(gb)) { //Display Info - decoding is not affected by it
941 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
942 v->s.avctx->width = v->s.width = w = get_bits(gb, 14) + 1;
943 v->s.avctx->height = v->s.height = h = get_bits(gb, 14) + 1;
944 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
946 ar = get_bits(gb, 4);
948 v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
952 v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
955 if(get_bits1(gb)){ //framerate stuff
957 v->s.avctx->time_base.num = 32;
958 v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
961 nr = get_bits(gb, 8);
962 dr = get_bits(gb, 4);
963 if(nr && nr < 8 && dr && dr < 3){
964 v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
965 v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
971 v->color_prim = get_bits(gb, 8);
972 v->transfer_char = get_bits(gb, 8);
973 v->matrix_coef = get_bits(gb, 8);
977 v->hrd_param_flag = get_bits1(gb);
978 if(v->hrd_param_flag) {
980 v->hrd_num_leaky_buckets = get_bits(gb, 5);
981 skip_bits(gb, 4); //bitrate exponent
982 skip_bits(gb, 4); //buffer size exponent
983 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
984 skip_bits(gb, 16); //hrd_rate[n]
985 skip_bits(gb, 16); //hrd_buffer[n]
991 static int decode_entry_point(AVCodecContext *avctx, GetBitContext *gb)
993 VC1Context *v = avctx->priv_data;
994 int i, blink, clentry, refdist;
996 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
997 blink = get_bits1(gb); // broken link
998 clentry = get_bits1(gb); // closed entry
999 v->panscanflag = get_bits1(gb);
1000 refdist = get_bits1(gb); // refdist flag
1001 v->s.loop_filter = get_bits1(gb);
1002 v->fastuvmc = get_bits1(gb);
1003 v->extended_mv = get_bits1(gb);
1004 v->dquant = get_bits(gb, 2);
1005 v->vstransform = get_bits1(gb);
1006 v->overlap = get_bits1(gb);
1007 v->quantizer_mode = get_bits(gb, 2);
1009 if(v->hrd_param_flag){
1010 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
1011 skip_bits(gb, 8); //hrd_full[n]
1016 avctx->coded_width = (get_bits(gb, 12)+1)<<1;
1017 avctx->coded_height = (get_bits(gb, 12)+1)<<1;
1020 v->extended_dmv = get_bits1(gb);
1022 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
1023 skip_bits(gb, 3); // Y range, ignored for now
1026 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
1027 skip_bits(gb, 3); // UV range, ignored for now
1030 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
1031 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
1032 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
1033 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
1034 blink, clentry, v->panscanflag, refdist, v->s.loop_filter,
1035 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
1040 static int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
1042 int pqindex, lowquant, status;
1044 if(v->finterpflag) v->interpfrm = get_bits1(gb);
1045 skip_bits(gb, 2); //framecnt unused
1047 if (v->rangered) v->rangeredfrm = get_bits1(gb);
1048 v->s.pict_type = get_bits1(gb);
1049 if (v->s.avctx->max_b_frames) {
1050 if (!v->s.pict_type) {
1051 if (get_bits1(gb)) v->s.pict_type = I_TYPE;
1052 else v->s.pict_type = B_TYPE;
1053 } else v->s.pict_type = P_TYPE;
1054 } else v->s.pict_type = v->s.pict_type ? P_TYPE : I_TYPE;
1057 if(v->s.pict_type == B_TYPE) {
1058 v->bfraction = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1059 v->bfraction = ff_vc1_bfraction_lut[v->bfraction];
1060 if(v->bfraction == 0) {
1061 v->s.pict_type = BI_TYPE;
1064 if(v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1065 skip_bits(gb, 7); // skip buffer fullness
1068 if(v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1070 if(v->s.pict_type == P_TYPE)
1073 /* Quantizer stuff */
1074 pqindex = get_bits(gb, 5);
1075 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1076 v->pq = ff_vc1_pquant_table[0][pqindex];
1078 v->pq = ff_vc1_pquant_table[1][pqindex];
1081 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1082 v->pquantizer = pqindex < 9;
1083 if (v->quantizer_mode == QUANT_NON_UNIFORM)
1085 v->pqindex = pqindex;
1086 if (pqindex < 9) v->halfpq = get_bits1(gb);
1088 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
1089 v->pquantizer = get_bits1(gb);
1091 if (v->extended_mv == 1) v->mvrange = get_unary(gb, 0, 3);
1092 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1093 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1094 v->range_x = 1 << (v->k_x - 1);
1095 v->range_y = 1 << (v->k_y - 1);
1096 if (v->profile == PROFILE_ADVANCED)
1098 if (v->postprocflag) v->postproc = get_bits1(gb);
1101 if (v->multires && v->s.pict_type != B_TYPE) v->respic = get_bits(gb, 2);
1103 if(v->res_x8 && (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)){
1104 if(get_bits1(gb))return -1;
1106 //av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
1107 // (v->s.pict_type == P_TYPE) ? 'P' : ((v->s.pict_type == I_TYPE) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
1109 if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
1111 switch(v->s.pict_type) {
1113 if (v->pq < 5) v->tt_index = 0;
1114 else if(v->pq < 13) v->tt_index = 1;
1115 else v->tt_index = 2;
1117 lowquant = (v->pq > 12) ? 0 : 1;
1118 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
1119 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
1121 int scale, shift, i;
1122 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
1123 v->lumscale = get_bits(gb, 6);
1124 v->lumshift = get_bits(gb, 6);
1126 /* fill lookup tables for intensity compensation */
1129 shift = (255 - v->lumshift * 2) << 6;
1130 if(v->lumshift > 31)
1133 scale = v->lumscale + 32;
1134 if(v->lumshift > 31)
1135 shift = (v->lumshift - 64) << 6;
1137 shift = v->lumshift << 6;
1139 for(i = 0; i < 256; i++) {
1140 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
1141 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
1144 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1145 v->s.quarter_sample = 0;
1146 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1147 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1148 v->s.quarter_sample = 0;
1150 v->s.quarter_sample = 1;
1152 v->s.quarter_sample = 1;
1153 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));
1155 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1156 v->mv_mode2 == MV_PMODE_MIXED_MV)
1157 || v->mv_mode == MV_PMODE_MIXED_MV)
1159 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1160 if (status < 0) return -1;
1161 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1162 "Imode: %i, Invert: %i\n", status>>1, status&1);
1164 v->mv_type_is_raw = 0;
1165 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1167 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1168 if (status < 0) return -1;
1169 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1170 "Imode: %i, Invert: %i\n", status>>1, status&1);
1172 /* Hopefully this is correct for P frames */
1173 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1174 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1178 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1179 vop_dquant_decoding(v);
1182 v->ttfrm = 0; //FIXME Is that so ?
1185 v->ttmbf = get_bits1(gb);
1188 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1196 if (v->pq < 5) v->tt_index = 0;
1197 else if(v->pq < 13) v->tt_index = 1;
1198 else v->tt_index = 2;
1200 lowquant = (v->pq > 12) ? 0 : 1;
1201 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1202 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1203 v->s.mspel = v->s.quarter_sample;
1205 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1206 if (status < 0) return -1;
1207 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1208 "Imode: %i, Invert: %i\n", status>>1, status&1);
1209 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1210 if (status < 0) return -1;
1211 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1212 "Imode: %i, Invert: %i\n", status>>1, status&1);
1214 v->s.mv_table_index = get_bits(gb, 2);
1215 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1219 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1220 vop_dquant_decoding(v);
1226 v->ttmbf = get_bits1(gb);
1229 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1239 v->c_ac_table_index = decode012(gb);
1240 if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1242 v->y_ac_table_index = decode012(gb);
1245 v->s.dc_table_index = get_bits1(gb);
1247 if(v->s.pict_type == BI_TYPE) {
1248 v->s.pict_type = B_TYPE;
1254 static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
1256 int pqindex, lowquant;
1259 v->p_frame_skipped = 0;
1262 v->fcm = decode012(gb);
1263 if(v->fcm) return -1; // interlaced frames/fields are not implemented
1265 switch(get_unary(gb, 0, 4)) {
1267 v->s.pict_type = P_TYPE;
1270 v->s.pict_type = B_TYPE;
1273 v->s.pict_type = I_TYPE;
1276 v->s.pict_type = BI_TYPE;
1279 v->s.pict_type = P_TYPE; // skipped pic
1280 v->p_frame_skipped = 1;
1286 if(!v->interlace || v->psf) {
1287 v->rptfrm = get_bits(gb, 2);
1289 v->tff = get_bits1(gb);
1290 v->rptfrm = get_bits1(gb);
1293 if(v->panscanflag) {
1296 v->rnd = get_bits1(gb);
1298 v->uvsamp = get_bits1(gb);
1299 if(v->finterpflag) v->interpfrm = get_bits1(gb);
1300 if(v->s.pict_type == B_TYPE) {
1301 v->bfraction = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1302 v->bfraction = ff_vc1_bfraction_lut[v->bfraction];
1303 if(v->bfraction == 0) {
1304 v->s.pict_type = BI_TYPE; /* XXX: should not happen here */
1307 pqindex = get_bits(gb, 5);
1308 v->pqindex = pqindex;
1309 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1310 v->pq = ff_vc1_pquant_table[0][pqindex];
1312 v->pq = ff_vc1_pquant_table[1][pqindex];
1315 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1316 v->pquantizer = pqindex < 9;
1317 if (v->quantizer_mode == QUANT_NON_UNIFORM)
1319 v->pqindex = pqindex;
1320 if (pqindex < 9) v->halfpq = get_bits1(gb);
1322 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
1323 v->pquantizer = get_bits1(gb);
1325 if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
1327 switch(v->s.pict_type) {
1330 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
1331 if (status < 0) return -1;
1332 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
1333 "Imode: %i, Invert: %i\n", status>>1, status&1);
1334 v->condover = CONDOVER_NONE;
1335 if(v->overlap && v->pq <= 8) {
1336 v->condover = decode012(gb);
1337 if(v->condover == CONDOVER_SELECT) {
1338 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
1339 if (status < 0) return -1;
1340 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
1341 "Imode: %i, Invert: %i\n", status>>1, status&1);
1347 v->postproc = get_bits1(gb);
1348 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
1349 else v->mvrange = 0;
1350 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1351 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1352 v->range_x = 1 << (v->k_x - 1);
1353 v->range_y = 1 << (v->k_y - 1);
1355 if (v->pq < 5) v->tt_index = 0;
1356 else if(v->pq < 13) v->tt_index = 1;
1357 else v->tt_index = 2;
1359 lowquant = (v->pq > 12) ? 0 : 1;
1360 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
1361 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
1363 int scale, shift, i;
1364 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
1365 v->lumscale = get_bits(gb, 6);
1366 v->lumshift = get_bits(gb, 6);
1367 /* fill lookup tables for intensity compensation */
1370 shift = (255 - v->lumshift * 2) << 6;
1371 if(v->lumshift > 31)
1374 scale = v->lumscale + 32;
1375 if(v->lumshift > 31)
1376 shift = (v->lumshift - 64) << 6;
1378 shift = v->lumshift << 6;
1380 for(i = 0; i < 256; i++) {
1381 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
1382 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
1386 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1387 v->s.quarter_sample = 0;
1388 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1389 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1390 v->s.quarter_sample = 0;
1392 v->s.quarter_sample = 1;
1394 v->s.quarter_sample = 1;
1395 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));
1397 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1398 v->mv_mode2 == MV_PMODE_MIXED_MV)
1399 || v->mv_mode == MV_PMODE_MIXED_MV)
1401 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1402 if (status < 0) return -1;
1403 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1404 "Imode: %i, Invert: %i\n", status>>1, status&1);
1406 v->mv_type_is_raw = 0;
1407 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1409 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1410 if (status < 0) return -1;
1411 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1412 "Imode: %i, Invert: %i\n", status>>1, status&1);
1414 /* Hopefully this is correct for P frames */
1415 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1416 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1419 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1420 vop_dquant_decoding(v);
1423 v->ttfrm = 0; //FIXME Is that so ?
1426 v->ttmbf = get_bits1(gb);
1429 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1438 v->postproc = get_bits1(gb);
1439 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
1440 else v->mvrange = 0;
1441 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1442 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1443 v->range_x = 1 << (v->k_x - 1);
1444 v->range_y = 1 << (v->k_y - 1);
1446 if (v->pq < 5) v->tt_index = 0;
1447 else if(v->pq < 13) v->tt_index = 1;
1448 else v->tt_index = 2;
1450 lowquant = (v->pq > 12) ? 0 : 1;
1451 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1452 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1453 v->s.mspel = v->s.quarter_sample;
1455 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1456 if (status < 0) return -1;
1457 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1458 "Imode: %i, Invert: %i\n", status>>1, status&1);
1459 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1460 if (status < 0) return -1;
1461 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1462 "Imode: %i, Invert: %i\n", status>>1, status&1);
1464 v->s.mv_table_index = get_bits(gb, 2);
1465 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1469 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1470 vop_dquant_decoding(v);
1476 v->ttmbf = get_bits1(gb);
1479 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1489 v->c_ac_table_index = decode012(gb);
1490 if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1492 v->y_ac_table_index = decode012(gb);
1495 v->s.dc_table_index = get_bits1(gb);
1496 if ((v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE) && v->dquant) {
1497 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1498 vop_dquant_decoding(v);
1502 if(v->s.pict_type == BI_TYPE) {
1503 v->s.pict_type = B_TYPE;
1509 /***********************************************************************/
1511 * @defgroup block VC-1 Block-level functions
1512 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
1518 * @brief Get macroblock-level quantizer scale
1520 #define GET_MQUANT() \
1524 if (v->dqprofile == DQPROFILE_ALL_MBS) \
1528 mquant = (get_bits1(gb)) ? v->altpq : v->pq; \
1532 mqdiff = get_bits(gb, 3); \
1533 if (mqdiff != 7) mquant = v->pq + mqdiff; \
1534 else mquant = get_bits(gb, 5); \
1537 if(v->dqprofile == DQPROFILE_SINGLE_EDGE) \
1538 edges = 1 << v->dqsbedge; \
1539 else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
1540 edges = (3 << v->dqsbedge) % 15; \
1541 else if(v->dqprofile == DQPROFILE_FOUR_EDGES) \
1543 if((edges&1) && !s->mb_x) \
1544 mquant = v->altpq; \
1545 if((edges&2) && s->first_slice_line) \
1546 mquant = v->altpq; \
1547 if((edges&4) && s->mb_x == (s->mb_width - 1)) \
1548 mquant = v->altpq; \
1549 if((edges&8) && s->mb_y == (s->mb_height - 1)) \
1550 mquant = v->altpq; \
1554 * @def GET_MVDATA(_dmv_x, _dmv_y)
1555 * @brief Get MV differentials
1556 * @see MVDATA decoding from 8.3.5.2, p(1)20
1557 * @param _dmv_x Horizontal differential for decoded MV
1558 * @param _dmv_y Vertical differential for decoded MV
1560 #define GET_MVDATA(_dmv_x, _dmv_y) \
1561 index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table,\
1562 VC1_MV_DIFF_VLC_BITS, 2); \
1565 mb_has_coeffs = 1; \
1568 else mb_has_coeffs = 0; \
1570 if (!index) { _dmv_x = _dmv_y = 0; } \
1571 else if (index == 35) \
1573 _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
1574 _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
1576 else if (index == 36) \
1585 if (!s->quarter_sample && index1 == 5) val = 1; \
1587 if(size_table[index1] - val > 0) \
1588 val = get_bits(gb, size_table[index1] - val); \
1590 sign = 0 - (val&1); \
1591 _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
1594 if (!s->quarter_sample && index1 == 5) val = 1; \
1596 if(size_table[index1] - val > 0) \
1597 val = get_bits(gb, size_table[index1] - val); \
1599 sign = 0 - (val&1); \
1600 _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
1603 /** Predict and set motion vector
1605 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)
1607 int xy, wrap, off = 0;
1612 /* scale MV difference to be quad-pel */
1613 dmv_x <<= 1 - s->quarter_sample;
1614 dmv_y <<= 1 - s->quarter_sample;
1616 wrap = s->b8_stride;
1617 xy = s->block_index[n];
1620 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
1621 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
1622 s->current_picture.motion_val[1][xy][0] = 0;
1623 s->current_picture.motion_val[1][xy][1] = 0;
1624 if(mv1) { /* duplicate motion data for 1-MV block */
1625 s->current_picture.motion_val[0][xy + 1][0] = 0;
1626 s->current_picture.motion_val[0][xy + 1][1] = 0;
1627 s->current_picture.motion_val[0][xy + wrap][0] = 0;
1628 s->current_picture.motion_val[0][xy + wrap][1] = 0;
1629 s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
1630 s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
1631 s->current_picture.motion_val[1][xy + 1][0] = 0;
1632 s->current_picture.motion_val[1][xy + 1][1] = 0;
1633 s->current_picture.motion_val[1][xy + wrap][0] = 0;
1634 s->current_picture.motion_val[1][xy + wrap][1] = 0;
1635 s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
1636 s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
1641 C = s->current_picture.motion_val[0][xy - 1];
1642 A = s->current_picture.motion_val[0][xy - wrap];
1644 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
1646 //in 4-MV mode different blocks have different B predictor position
1649 off = (s->mb_x > 0) ? -1 : 1;
1652 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
1661 B = s->current_picture.motion_val[0][xy - wrap + off];
1663 if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds
1664 if(s->mb_width == 1) {
1668 px = mid_pred(A[0], B[0], C[0]);
1669 py = mid_pred(A[1], B[1], C[1]);
1671 } else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds
1677 /* Pullback MV as specified in 8.3.5.3.4 */
1680 qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0);
1681 qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0);
1682 X = (s->mb_width << 6) - 4;
1683 Y = (s->mb_height << 6) - 4;
1685 if(qx + px < -60) px = -60 - qx;
1686 if(qy + py < -60) py = -60 - qy;
1688 if(qx + px < -28) px = -28 - qx;
1689 if(qy + py < -28) py = -28 - qy;
1691 if(qx + px > X) px = X - qx;
1692 if(qy + py > Y) py = Y - qy;
1694 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1695 if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) {
1696 if(is_intra[xy - wrap])
1697 sum = FFABS(px) + FFABS(py);
1699 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1701 if(get_bits1(&s->gb)) {
1709 if(is_intra[xy - 1])
1710 sum = FFABS(px) + FFABS(py);
1712 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1714 if(get_bits1(&s->gb)) {
1724 /* store MV using signed modulus of MV range defined in 4.11 */
1725 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
1726 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
1727 if(mv1) { /* duplicate motion data for 1-MV block */
1728 s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0];
1729 s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1];
1730 s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0];
1731 s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1];
1732 s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0];
1733 s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1];
1737 /** Motion compensation for direct or interpolated blocks in B-frames
1739 static void vc1_interp_mc(VC1Context *v)
1741 MpegEncContext *s = &v->s;
1742 DSPContext *dsp = &v->s.dsp;
1743 uint8_t *srcY, *srcU, *srcV;
1744 int dxy, uvdxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
1746 if(!v->s.next_picture.data[0])return;
1748 mx = s->mv[1][0][0];
1749 my = s->mv[1][0][1];
1750 uvmx = (mx + ((mx & 3) == 3)) >> 1;
1751 uvmy = (my + ((my & 3) == 3)) >> 1;
1753 uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
1754 uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
1756 srcY = s->next_picture.data[0];
1757 srcU = s->next_picture.data[1];
1758 srcV = s->next_picture.data[2];
1760 src_x = s->mb_x * 16 + (mx >> 2);
1761 src_y = s->mb_y * 16 + (my >> 2);
1762 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
1763 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
1765 if(v->profile != PROFILE_ADVANCED){
1766 src_x = av_clip( src_x, -16, s->mb_width * 16);
1767 src_y = av_clip( src_y, -16, s->mb_height * 16);
1768 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
1769 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
1771 src_x = av_clip( src_x, -17, s->avctx->coded_width);
1772 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
1773 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
1774 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
1777 srcY += src_y * s->linesize + src_x;
1778 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
1779 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
1781 /* for grayscale we should not try to read from unknown area */
1782 if(s->flags & CODEC_FLAG_GRAY) {
1783 srcU = s->edge_emu_buffer + 18 * s->linesize;
1784 srcV = s->edge_emu_buffer + 18 * s->linesize;
1788 || (unsigned)src_x > s->h_edge_pos - (mx&3) - 16
1789 || (unsigned)src_y > s->v_edge_pos - (my&3) - 16){
1790 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
1792 srcY -= s->mspel * (1 + s->linesize);
1793 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
1794 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
1795 srcY = s->edge_emu_buffer;
1796 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
1797 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
1798 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
1799 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
1802 /* if we deal with range reduction we need to scale source blocks */
1803 if(v->rangeredfrm) {
1805 uint8_t *src, *src2;
1808 for(j = 0; j < 17 + s->mspel*2; j++) {
1809 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
1812 src = srcU; src2 = srcV;
1813 for(j = 0; j < 9; j++) {
1814 for(i = 0; i < 9; i++) {
1815 src[i] = ((src[i] - 128) >> 1) + 128;
1816 src2[i] = ((src2[i] - 128) >> 1) + 128;
1818 src += s->uvlinesize;
1819 src2 += s->uvlinesize;
1822 srcY += s->mspel * (1 + s->linesize);
1827 dxy = ((my & 1) << 1) | (mx & 1);
1829 dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
1831 if(s->flags & CODEC_FLAG_GRAY) return;
1832 /* Chroma MC always uses qpel blilinear */
1833 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
1836 dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
1837 dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
1840 static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
1844 #if B_FRACTION_DEN==256
1848 return 2 * ((value * n + 255) >> 9);
1849 return (value * n + 128) >> 8;
1852 n -= B_FRACTION_DEN;
1854 return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
1855 return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
1859 /** Reconstruct motion vector for B-frame and do motion compensation
1861 static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
1864 v->mv_mode2 = v->mv_mode;
1865 v->mv_mode = MV_PMODE_INTENSITY_COMP;
1870 if(v->use_ic) v->mv_mode = v->mv_mode2;
1873 if(mode == BMV_TYPE_INTERPOLATED) {
1876 if(v->use_ic) v->mv_mode = v->mv_mode2;
1880 if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2;
1881 vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
1882 if(v->use_ic) v->mv_mode = v->mv_mode2;
1885 static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype)
1887 MpegEncContext *s = &v->s;
1888 int xy, wrap, off = 0;
1893 const uint8_t *is_intra = v->mb_type[0];
1897 /* scale MV difference to be quad-pel */
1898 dmv_x[0] <<= 1 - s->quarter_sample;
1899 dmv_y[0] <<= 1 - s->quarter_sample;
1900 dmv_x[1] <<= 1 - s->quarter_sample;
1901 dmv_y[1] <<= 1 - s->quarter_sample;
1903 wrap = s->b8_stride;
1904 xy = s->block_index[0];
1907 s->current_picture.motion_val[0][xy][0] =
1908 s->current_picture.motion_val[0][xy][1] =
1909 s->current_picture.motion_val[1][xy][0] =
1910 s->current_picture.motion_val[1][xy][1] = 0;
1913 s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
1914 s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
1915 s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
1916 s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
1918 /* Pullback predicted motion vectors as specified in 8.4.5.4 */
1919 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));
1920 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));
1921 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));
1922 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));
1924 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
1925 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
1926 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
1927 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
1931 if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
1932 C = s->current_picture.motion_val[0][xy - 2];
1933 A = s->current_picture.motion_val[0][xy - wrap*2];
1934 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
1935 B = s->current_picture.motion_val[0][xy - wrap*2 + off];
1937 if(!s->mb_x) C[0] = C[1] = 0;
1938 if(!s->first_slice_line) { // predictor A is not out of bounds
1939 if(s->mb_width == 1) {
1943 px = mid_pred(A[0], B[0], C[0]);
1944 py = mid_pred(A[1], B[1], C[1]);
1946 } else if(s->mb_x) { // predictor C is not out of bounds
1952 /* Pullback MV as specified in 8.3.5.3.4 */
1955 if(v->profile < PROFILE_ADVANCED) {
1956 qx = (s->mb_x << 5);
1957 qy = (s->mb_y << 5);
1958 X = (s->mb_width << 5) - 4;
1959 Y = (s->mb_height << 5) - 4;
1960 if(qx + px < -28) px = -28 - qx;
1961 if(qy + py < -28) py = -28 - qy;
1962 if(qx + px > X) px = X - qx;
1963 if(qy + py > Y) py = Y - qy;
1965 qx = (s->mb_x << 6);
1966 qy = (s->mb_y << 6);
1967 X = (s->mb_width << 6) - 4;
1968 Y = (s->mb_height << 6) - 4;
1969 if(qx + px < -60) px = -60 - qx;
1970 if(qy + py < -60) py = -60 - qy;
1971 if(qx + px > X) px = X - qx;
1972 if(qy + py > Y) py = Y - qy;
1975 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1976 if(0 && !s->first_slice_line && s->mb_x) {
1977 if(is_intra[xy - wrap])
1978 sum = FFABS(px) + FFABS(py);
1980 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1982 if(get_bits1(&s->gb)) {
1990 if(is_intra[xy - 2])
1991 sum = FFABS(px) + FFABS(py);
1993 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1995 if(get_bits1(&s->gb)) {
2005 /* store MV using signed modulus of MV range defined in 4.11 */
2006 s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
2007 s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
2009 if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
2010 C = s->current_picture.motion_val[1][xy - 2];
2011 A = s->current_picture.motion_val[1][xy - wrap*2];
2012 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
2013 B = s->current_picture.motion_val[1][xy - wrap*2 + off];
2015 if(!s->mb_x) C[0] = C[1] = 0;
2016 if(!s->first_slice_line) { // predictor A is not out of bounds
2017 if(s->mb_width == 1) {
2021 px = mid_pred(A[0], B[0], C[0]);
2022 py = mid_pred(A[1], B[1], C[1]);
2024 } else if(s->mb_x) { // predictor C is not out of bounds
2030 /* Pullback MV as specified in 8.3.5.3.4 */
2033 if(v->profile < PROFILE_ADVANCED) {
2034 qx = (s->mb_x << 5);
2035 qy = (s->mb_y << 5);
2036 X = (s->mb_width << 5) - 4;
2037 Y = (s->mb_height << 5) - 4;
2038 if(qx + px < -28) px = -28 - qx;
2039 if(qy + py < -28) py = -28 - qy;
2040 if(qx + px > X) px = X - qx;
2041 if(qy + py > Y) py = Y - qy;
2043 qx = (s->mb_x << 6);
2044 qy = (s->mb_y << 6);
2045 X = (s->mb_width << 6) - 4;
2046 Y = (s->mb_height << 6) - 4;
2047 if(qx + px < -60) px = -60 - qx;
2048 if(qy + py < -60) py = -60 - qy;
2049 if(qx + px > X) px = X - qx;
2050 if(qy + py > Y) py = Y - qy;
2053 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
2054 if(0 && !s->first_slice_line && s->mb_x) {
2055 if(is_intra[xy - wrap])
2056 sum = FFABS(px) + FFABS(py);
2058 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
2060 if(get_bits1(&s->gb)) {
2068 if(is_intra[xy - 2])
2069 sum = FFABS(px) + FFABS(py);
2071 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
2073 if(get_bits1(&s->gb)) {
2083 /* store MV using signed modulus of MV range defined in 4.11 */
2085 s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
2086 s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
2088 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
2089 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
2090 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
2091 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
2094 /** Get predicted DC value for I-frames only
2095 * prediction dir: left=0, top=1
2096 * @param s MpegEncContext
2097 * @param[in] n block index in the current MB
2098 * @param dc_val_ptr Pointer to DC predictor
2099 * @param dir_ptr Prediction direction for use in AC prediction
2101 static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
2102 int16_t **dc_val_ptr, int *dir_ptr)
2104 int a, b, c, wrap, pred, scale;
2106 static const uint16_t dcpred[32] = {
2107 -1, 1024, 512, 341, 256, 205, 171, 146, 128,
2108 114, 102, 93, 85, 79, 73, 68, 64,
2109 60, 57, 54, 51, 49, 47, 45, 43,
2110 41, 39, 38, 37, 35, 34, 33
2113 /* find prediction - wmv3_dc_scale always used here in fact */
2114 if (n < 4) scale = s->y_dc_scale;
2115 else scale = s->c_dc_scale;
2117 wrap = s->block_wrap[n];
2118 dc_val= s->dc_val[0] + s->block_index[n];
2124 b = dc_val[ - 1 - wrap];
2125 a = dc_val[ - wrap];
2127 if (pq < 9 || !overlap)
2129 /* Set outer values */
2130 if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
2131 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
2135 /* Set outer values */
2136 if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
2137 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
2140 if (abs(a - b) <= abs(b - c)) {
2148 /* update predictor */
2149 *dc_val_ptr = &dc_val[0];
2154 /** Get predicted DC value
2155 * prediction dir: left=0, top=1
2156 * @param s MpegEncContext
2157 * @param[in] n block index in the current MB
2158 * @param dc_val_ptr Pointer to DC predictor
2159 * @param dir_ptr Prediction direction for use in AC prediction
2161 static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
2162 int a_avail, int c_avail,
2163 int16_t **dc_val_ptr, int *dir_ptr)
2165 int a, b, c, wrap, pred, scale;
2167 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2170 /* find prediction - wmv3_dc_scale always used here in fact */
2171 if (n < 4) scale = s->y_dc_scale;
2172 else scale = s->c_dc_scale;
2174 wrap = s->block_wrap[n];
2175 dc_val= s->dc_val[0] + s->block_index[n];
2181 b = dc_val[ - 1 - wrap];
2182 a = dc_val[ - wrap];
2183 /* scale predictors if needed */
2184 q1 = s->current_picture.qscale_table[mb_pos];
2185 if(c_avail && (n!= 1 && n!=3)) {
2186 q2 = s->current_picture.qscale_table[mb_pos - 1];
2188 c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2190 if(a_avail && (n!= 2 && n!=3)) {
2191 q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2193 a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2195 if(a_avail && c_avail && (n!=3)) {
2198 if(n != 2) off -= s->mb_stride;
2199 q2 = s->current_picture.qscale_table[off];
2201 b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2204 if(a_avail && c_avail) {
2205 if(abs(a - b) <= abs(b - c)) {
2212 } else if(a_avail) {
2215 } else if(c_avail) {
2223 /* update predictor */
2224 *dc_val_ptr = &dc_val[0];
2230 * @defgroup std_mb VC1 Macroblock-level functions in Simple/Main Profiles
2231 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
2235 static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
2237 int xy, wrap, pred, a, b, c;
2239 xy = s->block_index[n];
2240 wrap = s->b8_stride;
2245 a = s->coded_block[xy - 1 ];
2246 b = s->coded_block[xy - 1 - wrap];
2247 c = s->coded_block[xy - wrap];
2256 *coded_block_ptr = &s->coded_block[xy];
2262 * Decode one AC coefficient
2263 * @param v The VC1 context
2264 * @param last Last coefficient
2265 * @param skip How much zero coefficients to skip
2266 * @param value Decoded AC coefficient value
2269 static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset)
2271 GetBitContext *gb = &v->s.gb;
2272 int index, escape, run = 0, level = 0, lst = 0;
2274 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
2275 if (index != vc1_ac_sizes[codingset] - 1) {
2276 run = vc1_index_decode_table[codingset][index][0];
2277 level = vc1_index_decode_table[codingset][index][1];
2278 lst = index >= vc1_last_decode_table[codingset];
2282 escape = decode210(gb);
2284 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
2285 run = vc1_index_decode_table[codingset][index][0];
2286 level = vc1_index_decode_table[codingset][index][1];
2287 lst = index >= vc1_last_decode_table[codingset];
2290 level += vc1_last_delta_level_table[codingset][run];
2292 level += vc1_delta_level_table[codingset][run];
2295 run += vc1_last_delta_run_table[codingset][level] + 1;
2297 run += vc1_delta_run_table[codingset][level] + 1;
2303 lst = get_bits1(gb);
2304 if(v->s.esc3_level_length == 0) {
2305 if(v->pq < 8 || v->dquantfrm) { // table 59
2306 v->s.esc3_level_length = get_bits(gb, 3);
2307 if(!v->s.esc3_level_length)
2308 v->s.esc3_level_length = get_bits(gb, 2) + 8;
2310 v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
2312 v->s.esc3_run_length = 3 + get_bits(gb, 2);
2314 run = get_bits(gb, v->s.esc3_run_length);
2315 sign = get_bits1(gb);
2316 level = get_bits(gb, v->s.esc3_level_length);
2327 /** Decode intra block in intra frames - should be faster than decode_intra_block
2328 * @param v VC1Context
2329 * @param block block to decode
2330 * @param coded are AC coeffs present or not
2331 * @param codingset set of VLC to decode data
2333 static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset)
2335 GetBitContext *gb = &v->s.gb;
2336 MpegEncContext *s = &v->s;
2337 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2340 int16_t *ac_val, *ac_val2;
2343 /* Get DC differential */
2345 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2347 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2350 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2355 if (dcdiff == 119 /* ESC index value */)
2357 /* TODO: Optimize */
2358 if (v->pq == 1) dcdiff = get_bits(gb, 10);
2359 else if (v->pq == 2) dcdiff = get_bits(gb, 9);
2360 else dcdiff = get_bits(gb, 8);
2365 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2366 else if (v->pq == 2)
2367 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2374 dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
2377 /* Store the quantized DC coeff, used for prediction */
2379 block[0] = dcdiff * s->y_dc_scale;
2381 block[0] = dcdiff * s->c_dc_scale;
2394 int last = 0, skip, value;
2395 const int8_t *zz_table;
2399 scale = v->pq * 2 + v->halfpq;
2403 zz_table = ff_vc1_horizontal_zz;
2405 zz_table = ff_vc1_vertical_zz;
2407 zz_table = ff_vc1_normal_zz;
2409 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2411 if(dc_pred_dir) //left
2414 ac_val -= 16 * s->block_wrap[n];
2417 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2421 block[zz_table[i++]] = value;
2424 /* apply AC prediction if needed */
2426 if(dc_pred_dir) { //left
2427 for(k = 1; k < 8; k++)
2428 block[k << 3] += ac_val[k];
2430 for(k = 1; k < 8; k++)
2431 block[k] += ac_val[k + 8];
2434 /* save AC coeffs for further prediction */
2435 for(k = 1; k < 8; k++) {
2436 ac_val2[k] = block[k << 3];
2437 ac_val2[k + 8] = block[k];
2440 /* scale AC coeffs */
2441 for(k = 1; k < 64; k++)
2445 block[k] += (block[k] < 0) ? -v->pq : v->pq;
2448 if(s->ac_pred) i = 63;
2454 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2457 scale = v->pq * 2 + v->halfpq;
2458 memset(ac_val2, 0, 16 * 2);
2459 if(dc_pred_dir) {//left
2462 memcpy(ac_val2, ac_val, 8 * 2);
2464 ac_val -= 16 * s->block_wrap[n];
2466 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2469 /* apply AC prediction if needed */
2471 if(dc_pred_dir) { //left
2472 for(k = 1; k < 8; k++) {
2473 block[k << 3] = ac_val[k] * scale;
2474 if(!v->pquantizer && block[k << 3])
2475 block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq;
2478 for(k = 1; k < 8; k++) {
2479 block[k] = ac_val[k + 8] * scale;
2480 if(!v->pquantizer && block[k])
2481 block[k] += (block[k] < 0) ? -v->pq : v->pq;
2487 s->block_last_index[n] = i;
2492 /** Decode intra block in intra frames - should be faster than decode_intra_block
2493 * @param v VC1Context
2494 * @param block block to decode
2495 * @param coded are AC coeffs present or not
2496 * @param codingset set of VLC to decode data
2498 static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant)
2500 GetBitContext *gb = &v->s.gb;
2501 MpegEncContext *s = &v->s;
2502 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2505 int16_t *ac_val, *ac_val2;
2507 int a_avail = v->a_avail, c_avail = v->c_avail;
2508 int use_pred = s->ac_pred;
2511 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2513 /* Get DC differential */
2515 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2517 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2520 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2525 if (dcdiff == 119 /* ESC index value */)
2527 /* TODO: Optimize */
2528 if (mquant == 1) dcdiff = get_bits(gb, 10);
2529 else if (mquant == 2) dcdiff = get_bits(gb, 9);
2530 else dcdiff = get_bits(gb, 8);
2535 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2536 else if (mquant == 2)
2537 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2544 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
2547 /* Store the quantized DC coeff, used for prediction */
2549 block[0] = dcdiff * s->y_dc_scale;
2551 block[0] = dcdiff * s->c_dc_scale;
2560 /* check if AC is needed at all */
2561 if(!a_avail && !c_avail) use_pred = 0;
2562 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2565 scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0);
2567 if(dc_pred_dir) //left
2570 ac_val -= 16 * s->block_wrap[n];
2572 q1 = s->current_picture.qscale_table[mb_pos];
2573 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
2574 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2575 if(dc_pred_dir && n==1) q2 = q1;
2576 if(!dc_pred_dir && n==2) q2 = q1;
2580 int last = 0, skip, value;
2581 const int8_t *zz_table;
2586 zz_table = ff_vc1_horizontal_zz;
2588 zz_table = ff_vc1_vertical_zz;
2590 zz_table = ff_vc1_normal_zz;
2593 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2597 block[zz_table[i++]] = value;
2600 /* apply AC prediction if needed */
2602 /* scale predictors if needed*/
2604 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2605 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2607 if(dc_pred_dir) { //left
2608 for(k = 1; k < 8; k++)
2609 block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2611 for(k = 1; k < 8; k++)
2612 block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2615 if(dc_pred_dir) { //left
2616 for(k = 1; k < 8; k++)
2617 block[k << 3] += ac_val[k];
2619 for(k = 1; k < 8; k++)
2620 block[k] += ac_val[k + 8];
2624 /* save AC coeffs for further prediction */
2625 for(k = 1; k < 8; k++) {
2626 ac_val2[k] = block[k << 3];
2627 ac_val2[k + 8] = block[k];
2630 /* scale AC coeffs */
2631 for(k = 1; k < 64; k++)
2635 block[k] += (block[k] < 0) ? -mquant : mquant;
2638 if(use_pred) i = 63;
2639 } else { // no AC coeffs
2642 memset(ac_val2, 0, 16 * 2);
2643 if(dc_pred_dir) {//left
2645 memcpy(ac_val2, ac_val, 8 * 2);
2647 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2648 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2649 for(k = 1; k < 8; k++)
2650 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2655 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2657 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2658 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2659 for(k = 1; k < 8; k++)
2660 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2665 /* apply AC prediction if needed */
2667 if(dc_pred_dir) { //left
2668 for(k = 1; k < 8; k++) {
2669 block[k << 3] = ac_val2[k] * scale;
2670 if(!v->pquantizer && block[k << 3])
2671 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
2674 for(k = 1; k < 8; k++) {
2675 block[k] = ac_val2[k + 8] * scale;
2676 if(!v->pquantizer && block[k])
2677 block[k] += (block[k] < 0) ? -mquant : mquant;
2683 s->block_last_index[n] = i;
2688 /** Decode intra block in inter frames - more generic version than vc1_decode_i_block
2689 * @param v VC1Context
2690 * @param block block to decode
2691 * @param coded are AC coeffs present or not
2692 * @param mquant block quantizer
2693 * @param codingset set of VLC to decode data
2695 static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset)
2697 GetBitContext *gb = &v->s.gb;
2698 MpegEncContext *s = &v->s;
2699 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2702 int16_t *ac_val, *ac_val2;
2704 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2705 int a_avail = v->a_avail, c_avail = v->c_avail;
2706 int use_pred = s->ac_pred;
2710 /* XXX: Guard against dumb values of mquant */
2711 mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
2713 /* Set DC scale - y and c use the same */
2714 s->y_dc_scale = s->y_dc_scale_table[mquant];
2715 s->c_dc_scale = s->c_dc_scale_table[mquant];
2717 /* Get DC differential */
2719 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2721 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2724 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2729 if (dcdiff == 119 /* ESC index value */)
2731 /* TODO: Optimize */
2732 if (mquant == 1) dcdiff = get_bits(gb, 10);
2733 else if (mquant == 2) dcdiff = get_bits(gb, 9);
2734 else dcdiff = get_bits(gb, 8);
2739 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2740 else if (mquant == 2)
2741 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2748 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
2751 /* Store the quantized DC coeff, used for prediction */
2754 block[0] = dcdiff * s->y_dc_scale;
2756 block[0] = dcdiff * s->c_dc_scale;
2765 /* check if AC is needed at all and adjust direction if needed */
2766 if(!a_avail) dc_pred_dir = 1;
2767 if(!c_avail) dc_pred_dir = 0;
2768 if(!a_avail && !c_avail) use_pred = 0;
2769 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2772 scale = mquant * 2 + v->halfpq;
2774 if(dc_pred_dir) //left
2777 ac_val -= 16 * s->block_wrap[n];
2779 q1 = s->current_picture.qscale_table[mb_pos];
2780 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
2781 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2782 if(dc_pred_dir && n==1) q2 = q1;
2783 if(!dc_pred_dir && n==2) q2 = q1;
2787 int last = 0, skip, value;
2788 const int8_t *zz_table;
2791 zz_table = ff_vc1_simple_progressive_8x8_zz;
2794 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2798 block[zz_table[i++]] = value;
2801 /* apply AC prediction if needed */
2803 /* scale predictors if needed*/
2805 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2806 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2808 if(dc_pred_dir) { //left
2809 for(k = 1; k < 8; k++)
2810 block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2812 for(k = 1; k < 8; k++)
2813 block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2816 if(dc_pred_dir) { //left
2817 for(k = 1; k < 8; k++)
2818 block[k << 3] += ac_val[k];
2820 for(k = 1; k < 8; k++)
2821 block[k] += ac_val[k + 8];
2825 /* save AC coeffs for further prediction */
2826 for(k = 1; k < 8; k++) {
2827 ac_val2[k] = block[k << 3];
2828 ac_val2[k + 8] = block[k];
2831 /* scale AC coeffs */
2832 for(k = 1; k < 64; k++)
2836 block[k] += (block[k] < 0) ? -mquant : mquant;
2839 if(use_pred) i = 63;
2840 } else { // no AC coeffs
2843 memset(ac_val2, 0, 16 * 2);
2844 if(dc_pred_dir) {//left
2846 memcpy(ac_val2, ac_val, 8 * 2);
2848 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2849 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2850 for(k = 1; k < 8; k++)
2851 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2856 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2858 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2859 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2860 for(k = 1; k < 8; k++)
2861 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2866 /* apply AC prediction if needed */
2868 if(dc_pred_dir) { //left
2869 for(k = 1; k < 8; k++) {
2870 block[k << 3] = ac_val2[k] * scale;
2871 if(!v->pquantizer && block[k << 3])
2872 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
2875 for(k = 1; k < 8; k++) {
2876 block[k] = ac_val2[k + 8] * scale;
2877 if(!v->pquantizer && block[k])
2878 block[k] += (block[k] < 0) ? -mquant : mquant;
2884 s->block_last_index[n] = i;
2891 static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block)
2893 MpegEncContext *s = &v->s;
2894 GetBitContext *gb = &s->gb;
2897 int scale, off, idx, last, skip, value;
2898 int ttblk = ttmb & 7;
2901 ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)];
2903 if(ttblk == TT_4X4) {
2904 subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
2906 if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) {
2907 subblkpat = decode012(gb);
2908 if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits
2909 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4;
2910 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8;
2912 scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0);
2914 // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
2915 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
2916 subblkpat = 2 - (ttblk == TT_8X4_TOP);
2919 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
2920 subblkpat = 2 - (ttblk == TT_4X8_LEFT);
2928 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2932 idx = ff_vc1_simple_progressive_8x8_zz[i++];
2933 block[idx] = value * scale;
2935 block[idx] += (block[idx] < 0) ? -mquant : mquant;
2937 s->dsp.vc1_inv_trans_8x8(block);
2940 for(j = 0; j < 4; j++) {
2941 last = subblkpat & (1 << (3 - j));
2943 off = (j & 1) * 4 + (j & 2) * 16;
2945 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2949 idx = ff_vc1_simple_progressive_4x4_zz[i++];
2950 block[idx + off] = value * scale;
2952 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2954 if(!(subblkpat & (1 << (3 - j))))
2955 s->dsp.vc1_inv_trans_4x4(block, j);
2959 for(j = 0; j < 2; j++) {
2960 last = subblkpat & (1 << (1 - j));
2964 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2968 if(v->profile < PROFILE_ADVANCED)
2969 idx = ff_vc1_simple_progressive_8x4_zz[i++];
2971 idx = ff_vc1_adv_progressive_8x4_zz[i++];
2972 block[idx + off] = value * scale;
2974 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2976 if(!(subblkpat & (1 << (1 - j))))
2977 s->dsp.vc1_inv_trans_8x4(block, j);
2981 for(j = 0; j < 2; j++) {
2982 last = subblkpat & (1 << (1 - j));
2986 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2990 if(v->profile < PROFILE_ADVANCED)
2991 idx = ff_vc1_simple_progressive_4x8_zz[i++];
2993 idx = ff_vc1_adv_progressive_4x8_zz[i++];
2994 block[idx + off] = value * scale;
2996 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2998 if(!(subblkpat & (1 << (1 - j))))
2999 s->dsp.vc1_inv_trans_4x8(block, j);
3007 /** Decode one P-frame MB (in Simple/Main profile)
3009 static int vc1_decode_p_mb(VC1Context *v)
3011 MpegEncContext *s = &v->s;
3012 GetBitContext *gb = &s->gb;
3014 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3015 int cbp; /* cbp decoding stuff */
3016 int mqdiff, mquant; /* MB quantization */
3017 int ttmb = v->ttfrm; /* MB Transform type */
3020 static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
3021 offset_table[6] = { 0, 1, 3, 7, 15, 31 };
3022 int mb_has_coeffs = 1; /* last_flag */
3023 int dmv_x, dmv_y; /* Differential MV components */
3024 int index, index1; /* LUT indices */
3025 int val, sign; /* temp values */
3026 int first_block = 1;
3028 int skipped, fourmv;
3030 mquant = v->pq; /* Loosy initialization */
3032 if (v->mv_type_is_raw)
3033 fourmv = get_bits1(gb);
3035 fourmv = v->mv_type_mb_plane[mb_pos];
3037 skipped = get_bits1(gb);
3039 skipped = v->s.mbskip_table[mb_pos];
3041 s->dsp.clear_blocks(s->block[0]);
3043 if (!fourmv) /* 1MV mode */
3047 GET_MVDATA(dmv_x, dmv_y);
3050 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3051 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3053 s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
3054 vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]);
3056 /* FIXME Set DC val for inter block ? */
3057 if (s->mb_intra && !mb_has_coeffs)
3060 s->ac_pred = get_bits1(gb);
3063 else if (mb_has_coeffs)
3065 if (s->mb_intra) s->ac_pred = get_bits1(gb);
3066 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3074 s->current_picture.qscale_table[mb_pos] = mquant;
3076 if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
3077 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
3078 VC1_TTMB_VLC_BITS, 2);
3079 if(!s->mb_intra) vc1_mc_1mv(v, 0);
3083 s->dc_val[0][s->block_index[i]] = 0;
3085 val = ((cbp >> (5 - i)) & 1);
3086 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3087 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3089 /* check if prediction blocks A and C are available */
3090 v->a_avail = v->c_avail = 0;
3091 if(i == 2 || i == 3 || !s->first_slice_line)
3092 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3093 if(i == 1 || i == 3 || s->mb_x)
3094 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3096 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
3097 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3098 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3099 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3100 for(j = 0; j < 64; j++) s->block[i][j] += 128;
3101 if(!v->res_fasttx && v->res_x8) for(j = 0; j < 64; j++) s->block[i][j] += 16;
3102 s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3103 if(v->pq >= 9 && v->overlap) {
3105 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3107 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3110 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3111 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3113 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3114 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3121 for(i = 0; i < 6; i++) {
3122 v->mb_type[0][s->block_index[i]] = 0;
3123 s->dc_val[0][s->block_index[i]] = 0;
3125 s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
3126 s->current_picture.qscale_table[mb_pos] = 0;
3127 vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
3134 if (!skipped /* unskipped MB */)
3136 int intra_count = 0, coded_inter = 0;
3137 int is_intra[6], is_coded[6];
3139 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3142 val = ((cbp >> (5 - i)) & 1);
3143 s->dc_val[0][s->block_index[i]] = 0;
3150 GET_MVDATA(dmv_x, dmv_y);
3152 vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
3153 if(!s->mb_intra) vc1_mc_4mv_luma(v, i);
3154 intra_count += s->mb_intra;
3155 is_intra[i] = s->mb_intra;
3156 is_coded[i] = mb_has_coeffs;
3159 is_intra[i] = (intra_count >= 3);
3162 if(i == 4) vc1_mc_4mv_chroma(v);
3163 v->mb_type[0][s->block_index[i]] = is_intra[i];
3164 if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i];
3166 // if there are no coded blocks then don't do anything more
3167 if(!intra_count && !coded_inter) return 0;
3170 s->current_picture.qscale_table[mb_pos] = mquant;
3171 /* test if block is intra and has pred */
3176 if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
3177 || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
3182 if(intrapred)s->ac_pred = get_bits1(gb);
3183 else s->ac_pred = 0;
3185 if (!v->ttmbf && coded_inter)
3186 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3190 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3191 s->mb_intra = is_intra[i];
3193 /* check if prediction blocks A and C are available */
3194 v->a_avail = v->c_avail = 0;
3195 if(i == 2 || i == 3 || !s->first_slice_line)
3196 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3197 if(i == 1 || i == 3 || s->mb_x)
3198 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3200 vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset);
3201 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3202 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3203 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3204 for(j = 0; j < 64; j++) s->block[i][j] += 128;
3205 if(!v->res_fasttx && v->res_x8) for(j = 0; j < 64; j++) s->block[i][j] += 16;
3206 s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3207 if(v->pq >= 9 && v->overlap) {
3209 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3211 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3213 } else if(is_coded[i]) {
3214 status = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3215 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3217 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3218 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3226 s->current_picture.qscale_table[mb_pos] = 0;
3227 for (i=0; i<6; i++) {
3228 v->mb_type[0][s->block_index[i]] = 0;
3229 s->dc_val[0][s->block_index[i]] = 0;
3233 vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]);
3234 vc1_mc_4mv_luma(v, i);
3236 vc1_mc_4mv_chroma(v);
3237 s->current_picture.qscale_table[mb_pos] = 0;
3242 /* Should never happen */
3246 /** Decode one B-frame MB (in Main profile)
3248 static void vc1_decode_b_mb(VC1Context *v)
3250 MpegEncContext *s = &v->s;
3251 GetBitContext *gb = &s->gb;
3253 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3254 int cbp = 0; /* cbp decoding stuff */
3255 int mqdiff, mquant; /* MB quantization */
3256 int ttmb = v->ttfrm; /* MB Transform type */
3258 static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
3259 offset_table[6] = { 0, 1, 3, 7, 15, 31 };
3260 int mb_has_coeffs = 0; /* last_flag */
3261 int index, index1; /* LUT indices */
3262 int val, sign; /* temp values */
3263 int first_block = 1;
3265 int skipped, direct;
3266 int dmv_x[2], dmv_y[2];
3267 int bmvtype = BMV_TYPE_BACKWARD;
3269 mquant = v->pq; /* Loosy initialization */
3273 direct = get_bits1(gb);
3275 direct = v->direct_mb_plane[mb_pos];
3277 skipped = get_bits1(gb);
3279 skipped = v->s.mbskip_table[mb_pos];
3281 s->dsp.clear_blocks(s->block[0]);
3282 dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
3283 for(i = 0; i < 6; i++) {
3284 v->mb_type[0][s->block_index[i]] = 0;
3285 s->dc_val[0][s->block_index[i]] = 0;
3287 s->current_picture.qscale_table[mb_pos] = 0;
3291 GET_MVDATA(dmv_x[0], dmv_y[0]);
3292 dmv_x[1] = dmv_x[0];
3293 dmv_y[1] = dmv_y[0];
3295 if(skipped || !s->mb_intra) {
3296 bmvtype = decode012(gb);
3299 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
3302 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
3305 bmvtype = BMV_TYPE_INTERPOLATED;
3306 dmv_x[0] = dmv_y[0] = 0;
3310 for(i = 0; i < 6; i++)
3311 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3314 if(direct) bmvtype = BMV_TYPE_INTERPOLATED;
3315 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3316 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3320 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3324 s->current_picture.qscale_table[mb_pos] = mquant;
3326 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3327 dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
3328 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3329 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3331 if(!mb_has_coeffs && !s->mb_intra) {
3332 /* no coded blocks - effectively skipped */
3333 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3334 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3337 if(s->mb_intra && !mb_has_coeffs) {
3339 s->current_picture.qscale_table[mb_pos] = mquant;
3340 s->ac_pred = get_bits1(gb);
3342 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3344 if(bmvtype == BMV_TYPE_INTERPOLATED) {
3345 GET_MVDATA(dmv_x[0], dmv_y[0]);
3346 if(!mb_has_coeffs) {
3347 /* interpolated skipped block */
3348 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3349 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3353 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3355 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3358 s->ac_pred = get_bits1(gb);
3359 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3361 s->current_picture.qscale_table[mb_pos] = mquant;
3362 if(!v->ttmbf && !s->mb_intra && mb_has_coeffs)
3363 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3369 s->dc_val[0][s->block_index[i]] = 0;
3371 val = ((cbp >> (5 - i)) & 1);
3372 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3373 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3375 /* check if prediction blocks A and C are available */
3376 v->a_avail = v->c_avail = 0;
3377 if(i == 2 || i == 3 || !s->first_slice_line)
3378 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3379 if(i == 1 || i == 3 || s->mb_x)
3380 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3382 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
3383 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3384 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3385 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3386 for(j = 0; j < 64; j++) s->block[i][j] += 128;
3387 s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3389 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3390 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3392 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3393 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3398 /** Decode blocks of I-frame
3400 static void vc1_decode_i_blocks(VC1Context *v)
3403 MpegEncContext *s = &v->s;
3408 /* select codingmode used for VLC tables selection */
3409 switch(v->y_ac_table_index){
3411 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3414 v->codingset = CS_HIGH_MOT_INTRA;
3417 v->codingset = CS_MID_RATE_INTRA;
3421 switch(v->c_ac_table_index){
3423 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3426 v->codingset2 = CS_HIGH_MOT_INTER;
3429 v->codingset2 = CS_MID_RATE_INTER;
3433 /* Set DC scale - y and c use the same */
3434 s->y_dc_scale = s->y_dc_scale_table[v->pq];
3435 s->c_dc_scale = s->c_dc_scale_table[v->pq];
3438 s->mb_x = s->mb_y = 0;
3440 s->first_slice_line = 1;
3441 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3442 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3443 ff_init_block_index(s);
3444 ff_update_block_index(s);
3445 s->dsp.clear_blocks(s->block[0]);
3446 mb_pos = s->mb_x + s->mb_y * s->mb_width;
3447 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
3448 s->current_picture.qscale_table[mb_pos] = v->pq;
3449 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3450 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3452 // do actual MB decoding and displaying
3453 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
3454 v->s.ac_pred = get_bits1(&v->s.gb);
3456 for(k = 0; k < 6; k++) {
3457 val = ((cbp >> (5 - k)) & 1);
3460 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
3464 cbp |= val << (5 - k);
3466 vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
3468 s->dsp.vc1_inv_trans_8x8(s->block[k]);
3469 if(!v->res_fasttx && !v->res_x8) for(j = 0; j < 64; j++) s->block[k][j] -= 16;
3470 if(v->pq >= 9 && v->overlap) {
3471 for(j = 0; j < 64; j++) s->block[k][j] += 128;
3475 vc1_put_block(v, s->block);
3476 if(v->pq >= 9 && v->overlap) {
3478 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
3479 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3480 if(!(s->flags & CODEC_FLAG_GRAY)) {
3481 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
3482 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
3485 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
3486 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3487 if(!s->first_slice_line) {
3488 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
3489 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
3490 if(!(s->flags & CODEC_FLAG_GRAY)) {
3491 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
3492 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
3495 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3496 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3499 if(get_bits_count(&s->gb) > v->bits) {
3500 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3501 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
3505 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3506 s->first_slice_line = 0;
3508 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3511 /** Decode blocks of I-frame for advanced profile
3513 static void vc1_decode_i_blocks_adv(VC1Context *v)
3516 MpegEncContext *s = &v->s;
3523 GetBitContext *gb = &s->gb;
3525 /* select codingmode used for VLC tables selection */
3526 switch(v->y_ac_table_index){
3528 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3531 v->codingset = CS_HIGH_MOT_INTRA;
3534 v->codingset = CS_MID_RATE_INTRA;
3538 switch(v->c_ac_table_index){
3540 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3543 v->codingset2 = CS_HIGH_MOT_INTER;
3546 v->codingset2 = CS_MID_RATE_INTER;
3551 s->mb_x = s->mb_y = 0;
3553 s->first_slice_line = 1;
3554 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3555 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3556 ff_init_block_index(s);
3557 ff_update_block_index(s);
3558 s->dsp.clear_blocks(s->block[0]);
3559 mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3560 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
3561 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3562 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3564 // do actual MB decoding and displaying
3565 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
3566 if(v->acpred_is_raw)
3567 v->s.ac_pred = get_bits1(&v->s.gb);
3569 v->s.ac_pred = v->acpred_plane[mb_pos];
3571 if(v->condover == CONDOVER_SELECT) {
3572 if(v->overflg_is_raw)
3573 overlap = get_bits1(&v->s.gb);
3575 overlap = v->over_flags_plane[mb_pos];
3577 overlap = (v->condover == CONDOVER_ALL);
3581 s->current_picture.qscale_table[mb_pos] = mquant;
3582 /* Set DC scale - y and c use the same */
3583 s->y_dc_scale = s->y_dc_scale_table[mquant];
3584 s->c_dc_scale = s->c_dc_scale_table[mquant];
3586 for(k = 0; k < 6; k++) {
3587 val = ((cbp >> (5 - k)) & 1);
3590 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
3594 cbp |= val << (5 - k);
3596 v->a_avail = !s->first_slice_line || (k==2 || k==3);
3597 v->c_avail = !!s->mb_x || (k==1 || k==3);
3599 vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant);
3601 s->dsp.vc1_inv_trans_8x8(s->block[k]);
3602 for(j = 0; j < 64; j++) s->block[k][j] += 128;
3605 vc1_put_block(v, s->block);
3608 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
3609 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3610 if(!(s->flags & CODEC_FLAG_GRAY)) {
3611 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
3612 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
3615 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
3616 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3617 if(!s->first_slice_line) {
3618 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
3619 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
3620 if(!(s->flags & CODEC_FLAG_GRAY)) {
3621 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
3622 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
3625 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3626 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3629 if(get_bits_count(&s->gb) > v->bits) {
3630 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3631 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
3635 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3636 s->first_slice_line = 0;
3638 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3641 static void vc1_decode_p_blocks(VC1Context *v)
3643 MpegEncContext *s = &v->s;
3645 /* select codingmode used for VLC tables selection */
3646 switch(v->c_ac_table_index){
3648 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3651 v->codingset = CS_HIGH_MOT_INTRA;
3654 v->codingset = CS_MID_RATE_INTRA;
3658 switch(v->c_ac_table_index){
3660 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3663 v->codingset2 = CS_HIGH_MOT_INTER;
3666 v->codingset2 = CS_MID_RATE_INTER;
3670 s->first_slice_line = 1;
3671 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3672 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3673 ff_init_block_index(s);
3674 ff_update_block_index(s);
3675 s->dsp.clear_blocks(s->block[0]);
3678 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
3679 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3680 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);
3684 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3685 s->first_slice_line = 0;
3687 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3690 static void vc1_decode_b_blocks(VC1Context *v)
3692 MpegEncContext *s = &v->s;
3694 /* select codingmode used for VLC tables selection */
3695 switch(v->c_ac_table_index){
3697 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3700 v->codingset = CS_HIGH_MOT_INTRA;
3703 v->codingset = CS_MID_RATE_INTRA;
3707 switch(v->c_ac_table_index){
3709 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3712 v->codingset2 = CS_HIGH_MOT_INTER;
3715 v->codingset2 = CS_MID_RATE_INTER;
3719 s->first_slice_line = 1;
3720 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3721 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3722 ff_init_block_index(s);
3723 ff_update_block_index(s);
3724 s->dsp.clear_blocks(s->block[0]);
3727 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
3728 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3729 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);
3733 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3734 s->first_slice_line = 0;
3736 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3739 static void vc1_decode_skip_blocks(VC1Context *v)
3741 MpegEncContext *s = &v->s;
3743 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3744 s->first_slice_line = 1;
3745 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3747 ff_init_block_index(s);
3748 ff_update_block_index(s);
3749 memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
3750 memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
3751 memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
3752 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3753 s->first_slice_line = 0;
3755 s->pict_type = P_TYPE;
3758 static void vc1_decode_blocks(VC1Context *v)
3761 v->s.esc3_level_length = 0;
3763 switch(v->s.pict_type) {
3765 if(v->profile == PROFILE_ADVANCED)
3766 vc1_decode_i_blocks_adv(v);
3768 vc1_decode_i_blocks(v);
3771 if(v->p_frame_skipped)
3772 vc1_decode_skip_blocks(v);
3774 vc1_decode_p_blocks(v);
3778 if(v->profile == PROFILE_ADVANCED)
3779 vc1_decode_i_blocks_adv(v);
3781 vc1_decode_i_blocks(v);
3783 vc1_decode_b_blocks(v);
3788 /** Find VC-1 marker in buffer
3789 * @return position where next marker starts or end of buffer if no marker found
3791 static av_always_inline uint8_t* find_next_marker(uint8_t *src, uint8_t *end)
3793 uint32_t mrk = 0xFFFFFFFF;
3795 if(end-src < 4) return end;
3797 mrk = (mrk << 8) | *src++;
3804 static av_always_inline int vc1_unescape_buffer(uint8_t *src, int size, uint8_t *dst)
3809 for(dsize = 0; dsize < size; dsize++) *dst++ = *src++;
3812 for(i = 0; i < size; i++, src++) {
3813 if(src[0] == 3 && i >= 2 && !src[-1] && !src[-2] && i < size-1 && src[1] < 4) {
3814 dst[dsize++] = src[1];
3818 dst[dsize++] = *src;
3823 /** Initialize a VC1/WMV3 decoder
3824 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3825 * @todo TODO: Decypher remaining bits in extra_data
3827 static int vc1_decode_init(AVCodecContext *avctx)
3829 VC1Context *v = avctx->priv_data;
3830 MpegEncContext *s = &v->s;
3833 if (!avctx->extradata_size || !avctx->extradata) return -1;
3834 if (!(avctx->flags & CODEC_FLAG_GRAY))
3835 avctx->pix_fmt = PIX_FMT_YUV420P;
3837 avctx->pix_fmt = PIX_FMT_GRAY8;
3839 avctx->flags |= CODEC_FLAG_EMU_EDGE;
3840 v->s.flags |= CODEC_FLAG_EMU_EDGE;
3842 if(ff_h263_decode_init(avctx) < 0)
3844 if (vc1_init_common(v) < 0) return -1;
3846 avctx->coded_width = avctx->width;
3847 avctx->coded_height = avctx->height;
3848 if (avctx->codec_id == CODEC_ID_WMV3)
3852 // looks like WMV3 has a sequence header stored in the extradata
3853 // advanced sequence header may be before the first frame
3854 // the last byte of the extradata is a version number, 1 for the
3855 // samples we can decode
3857 init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
3859 if (decode_sequence_header(avctx, &gb) < 0)
3862 count = avctx->extradata_size*8 - get_bits_count(&gb);
3865 av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
3866 count, get_bits(&gb, count));
3870 av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
3872 } else { // VC1/WVC1
3873 uint8_t *start = avctx->extradata, *end = avctx->extradata + avctx->extradata_size;
3874 uint8_t *next; int size, buf2_size;
3875 uint8_t *buf2 = NULL;
3876 int seq_inited = 0, ep_inited = 0;
3878 if(avctx->extradata_size < 16) {
3879 av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
3883 buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
3884 if(start[0]) start++; // in WVC1 extradata first byte is its size
3886 for(; next < end; start = next){
3887 next = find_next_marker(start + 4, end);
3888 size = next - start - 4;
3889 if(size <= 0) continue;
3890 buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
3891 init_get_bits(&gb, buf2, buf2_size * 8);
3892 switch(AV_RB32(start)){
3893 case VC1_CODE_SEQHDR:
3894 if(decode_sequence_header(avctx, &gb) < 0){
3900 case VC1_CODE_ENTRYPOINT:
3901 if(decode_entry_point(avctx, &gb) < 0){
3910 if(!seq_inited || !ep_inited){
3911 av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
3915 avctx->has_b_frames= !!(avctx->max_b_frames);
3916 s->low_delay = !avctx->has_b_frames;
3918 s->mb_width = (avctx->coded_width+15)>>4;
3919 s->mb_height = (avctx->coded_height+15)>>4;
3921 /* Allocate mb bitplanes */
3922 v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3923 v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3924 v->acpred_plane = av_malloc(s->mb_stride * s->mb_height);
3925 v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height);
3927 /* allocate block type info in that way so it could be used with s->block_index[] */
3928 v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
3929 v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
3930 v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1;
3931 v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1);
3933 /* Init coded blocks info */
3934 if (v->profile == PROFILE_ADVANCED)
3936 // if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
3938 // if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
3946 /** Decode a VC1/WMV3 frame
3947 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3949 static int vc1_decode_frame(AVCodecContext *avctx,
3950 void *data, int *data_size,
3951 uint8_t *buf, int buf_size)
3953 VC1Context *v = avctx->priv_data;
3954 MpegEncContext *s = &v->s;
3955 AVFrame *pict = data;
3956 uint8_t *buf2 = NULL;
3958 /* no supplementary picture */
3959 if (buf_size == 0) {
3960 /* special case for last picture */
3961 if (s->low_delay==0 && s->next_picture_ptr) {
3962 *pict= *(AVFrame*)s->next_picture_ptr;
3963 s->next_picture_ptr= NULL;
3965 *data_size = sizeof(AVFrame);
3971 /* We need to set current_picture_ptr before reading the header,
3972 * otherwise we cannot store anything in there. */
3973 if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
3974 int i= ff_find_unused_picture(s, 0);
3975 s->current_picture_ptr= &s->picture[i];
3978 //for advanced profile we may need to parse and unescape data
3979 if (avctx->codec_id == CODEC_ID_VC1) {
3981 buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
3983 if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
3984 uint8_t *start, *end, *next;
3988 for(start = buf, end = buf + buf_size; next < end; start = next){
3989 next = find_next_marker(start + 4, end);
3990 size = next - start - 4;
3991 if(size <= 0) continue;
3992 switch(AV_RB32(start)){
3993 case VC1_CODE_FRAME:
3994 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
3996 case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
3997 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
3998 init_get_bits(&s->gb, buf2, buf_size2*8);
3999 decode_entry_point(avctx, &s->gb);
4001 case VC1_CODE_SLICE:
4002 av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n");
4007 }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
4010 divider = find_next_marker(buf, buf + buf_size);
4011 if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
4012 av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
4016 buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
4018 av_free(buf2);return -1;
4020 buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
4022 init_get_bits(&s->gb, buf2, buf_size2*8);
4024 init_get_bits(&s->gb, buf, buf_size*8);
4025 // do parse frame header
4026 if(v->profile < PROFILE_ADVANCED) {
4027 if(vc1_parse_frame_header(v, &s->gb) == -1) {
4032 if(vc1_parse_frame_header_adv(v, &s->gb) == -1) {
4038 if(s->pict_type != I_TYPE && !v->res_rtm_flag){
4044 s->current_picture.pict_type= s->pict_type;
4045 s->current_picture.key_frame= s->pict_type == I_TYPE;
4047 /* skip B-frames if we don't have reference frames */
4048 if(s->last_picture_ptr==NULL && (s->pict_type==B_TYPE || s->dropable)){
4050 return -1;//buf_size;
4052 /* skip b frames if we are in a hurry */
4053 if(avctx->hurry_up && s->pict_type==B_TYPE) return -1;//buf_size;
4054 if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==B_TYPE)
4055 || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=I_TYPE)
4056 || avctx->skip_frame >= AVDISCARD_ALL) {
4060 /* skip everything if we are in a hurry>=5 */
4061 if(avctx->hurry_up>=5) {
4063 return -1;//buf_size;
4066 if(s->next_p_frame_damaged){
4067 if(s->pict_type==B_TYPE)
4070 s->next_p_frame_damaged=0;
4073 if(MPV_frame_start(s, avctx) < 0) {
4078 s->me.qpel_put= s->dsp.put_qpel_pixels_tab;
4079 s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
4081 ff_er_frame_start(s);
4083 v->bits = buf_size * 8;
4084 vc1_decode_blocks(v);
4085 //av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8);
4086 // if(get_bits_count(&s->gb) > buf_size * 8)
4092 assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
4093 assert(s->current_picture.pict_type == s->pict_type);
4094 if (s->pict_type == B_TYPE || s->low_delay) {
4095 *pict= *(AVFrame*)s->current_picture_ptr;
4096 } else if (s->last_picture_ptr != NULL) {
4097 *pict= *(AVFrame*)s->last_picture_ptr;
4100 if(s->last_picture_ptr || s->low_delay){
4101 *data_size = sizeof(AVFrame);
4102 ff_print_debug_info(s, pict);
4105 /* Return the Picture timestamp as the frame number */
4106 /* we substract 1 because it is added on utils.c */
4107 avctx->frame_number = s->picture_number - 1;
4114 /** Close a VC1/WMV3 decoder
4115 * @warning Initial try at using MpegEncContext stuff
4117 static int vc1_decode_end(AVCodecContext *avctx)
4119 VC1Context *v = avctx->priv_data;
4121 av_freep(&v->hrd_rate);
4122 av_freep(&v->hrd_buffer);
4123 MPV_common_end(&v->s);
4124 av_freep(&v->mv_type_mb_plane);
4125 av_freep(&v->direct_mb_plane);
4126 av_freep(&v->acpred_plane);
4127 av_freep(&v->over_flags_plane);
4128 av_freep(&v->mb_type_base);
4133 AVCodec vc1_decoder = {
4146 AVCodec wmv3_decoder = {