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"
36 #include "simple_idct.h"
41 #define MB_INTRA_VLC_BITS 9
44 static const uint16_t table_mb_intra[64][2];
47 static inline int decode210(GetBitContext *gb){
51 return 2 - get_bits1(gb);
55 * Init VC-1 specific tables and VC1Context members
56 * @param v The VC1Context to initialize
59 static int vc1_init_common(VC1Context *v)
64 v->hrd_rate = v->hrd_buffer = NULL;
70 init_vlc(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
71 ff_vc1_bfraction_bits, 1, 1,
72 ff_vc1_bfraction_codes, 1, 1, 1);
73 init_vlc(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
74 ff_vc1_norm2_bits, 1, 1,
75 ff_vc1_norm2_codes, 1, 1, 1);
76 init_vlc(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
77 ff_vc1_norm6_bits, 1, 1,
78 ff_vc1_norm6_codes, 2, 2, 1);
79 init_vlc(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
80 ff_vc1_imode_bits, 1, 1,
81 ff_vc1_imode_codes, 1, 1, 1);
84 init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
85 ff_vc1_ttmb_bits[i], 1, 1,
86 ff_vc1_ttmb_codes[i], 2, 2, 1);
87 init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
88 ff_vc1_ttblk_bits[i], 1, 1,
89 ff_vc1_ttblk_codes[i], 1, 1, 1);
90 init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
91 ff_vc1_subblkpat_bits[i], 1, 1,
92 ff_vc1_subblkpat_codes[i], 1, 1, 1);
96 init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
97 ff_vc1_4mv_block_pattern_bits[i], 1, 1,
98 ff_vc1_4mv_block_pattern_codes[i], 1, 1, 1);
99 init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
100 ff_vc1_cbpcy_p_bits[i], 1, 1,
101 ff_vc1_cbpcy_p_codes[i], 2, 2, 1);
102 init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
103 ff_vc1_mv_diff_bits[i], 1, 1,
104 ff_vc1_mv_diff_codes[i], 2, 2, 1);
107 init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i],
108 &vc1_ac_tables[i][0][1], 8, 4,
109 &vc1_ac_tables[i][0][0], 8, 4, 1);
110 init_vlc(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64,
111 &ff_msmp4_mb_i_table[0][1], 4, 2,
112 &ff_msmp4_mb_i_table[0][0], 4, 2, 1);
117 v->mvrange = 0; /* 7.1.1.18, p80 */
122 /***********************************************************************/
124 * @defgroup bitplane VC9 Bitplane decoding
129 /** @addtogroup bitplane
142 /** @} */ //imode defines
144 /** Decode rows by checking if they are skipped
145 * @param plane Buffer to store decoded bits
146 * @param[in] width Width of this buffer
147 * @param[in] height Height of this buffer
148 * @param[in] stride of this buffer
150 static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
153 for (y=0; y<height; y++){
154 if (!get_bits1(gb)) //rowskip
155 memset(plane, 0, width);
157 for (x=0; x<width; x++)
158 plane[x] = get_bits1(gb);
163 /** Decode columns by checking if they are skipped
164 * @param plane Buffer to store decoded bits
165 * @param[in] width Width of this buffer
166 * @param[in] height Height of this buffer
167 * @param[in] stride of this buffer
168 * @todo FIXME: Optimize
170 static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
173 for (x=0; x<width; x++){
174 if (!get_bits1(gb)) //colskip
175 for (y=0; y<height; y++)
178 for (y=0; y<height; y++)
179 plane[y*stride] = get_bits1(gb);
184 /** Decode a bitplane's bits
185 * @param bp Bitplane where to store the decode bits
186 * @param v VC-1 context for bit reading and logging
188 * @todo FIXME: Optimize
190 static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
192 GetBitContext *gb = &v->s.gb;
194 int imode, x, y, code, offset;
195 uint8_t invert, *planep = data;
196 int width, height, stride;
198 width = v->s.mb_width;
199 height = v->s.mb_height;
200 stride = v->s.mb_stride;
201 invert = get_bits1(gb);
202 imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);
208 //Data is actually read in the MB layer (same for all tests == "raw")
209 *raw_flag = 1; //invert ignored
213 if ((height * width) & 1)
215 *planep++ = get_bits1(gb);
219 // decode bitplane as one long line
220 for (y = offset; y < height * width; y += 2) {
221 code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);
222 *planep++ = code & 1;
224 if(offset == width) {
226 planep += stride - width;
228 *planep++ = code >> 1;
230 if(offset == width) {
232 planep += stride - width;
238 if(!(height % 3) && (width % 3)) { // use 2x3 decoding
239 for(y = 0; y < height; y+= 3) {
240 for(x = width & 1; x < width; x += 2) {
241 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
243 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
246 planep[x + 0] = (code >> 0) & 1;
247 planep[x + 1] = (code >> 1) & 1;
248 planep[x + 0 + stride] = (code >> 2) & 1;
249 planep[x + 1 + stride] = (code >> 3) & 1;
250 planep[x + 0 + stride * 2] = (code >> 4) & 1;
251 planep[x + 1 + stride * 2] = (code >> 5) & 1;
253 planep += stride * 3;
255 if(width & 1) decode_colskip(data, 1, height, stride, &v->s.gb);
257 planep += (height & 1) * stride;
258 for(y = height & 1; y < height; y += 2) {
259 for(x = width % 3; x < width; x += 3) {
260 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
262 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
265 planep[x + 0] = (code >> 0) & 1;
266 planep[x + 1] = (code >> 1) & 1;
267 planep[x + 2] = (code >> 2) & 1;
268 planep[x + 0 + stride] = (code >> 3) & 1;
269 planep[x + 1 + stride] = (code >> 4) & 1;
270 planep[x + 2 + stride] = (code >> 5) & 1;
272 planep += stride * 2;
275 if(x) decode_colskip(data , x, height , stride, &v->s.gb);
276 if(height & 1) decode_rowskip(data+x, width - x, 1, stride, &v->s.gb);
280 decode_rowskip(data, width, height, stride, &v->s.gb);
283 decode_colskip(data, width, height, stride, &v->s.gb);
288 /* Applying diff operator */
289 if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6)
293 for (x=1; x<width; x++)
294 planep[x] ^= planep[x-1];
295 for (y=1; y<height; y++)
298 planep[0] ^= planep[-stride];
299 for (x=1; x<width; x++)
301 if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
302 else planep[x] ^= planep[x-1];
309 for (x=0; x<stride*height; x++) planep[x] = !planep[x]; //FIXME stride
311 return (imode<<1) + invert;
314 /** @} */ //Bitplane group
316 /***********************************************************************/
317 /** VOP Dquant decoding
318 * @param v VC-1 Context
320 static int vop_dquant_decoding(VC1Context *v)
322 GetBitContext *gb = &v->s.gb;
328 pqdiff = get_bits(gb, 3);
329 if (pqdiff == 7) v->altpq = get_bits(gb, 5);
330 else v->altpq = v->pq + pqdiff + 1;
334 v->dquantfrm = get_bits1(gb);
337 v->dqprofile = get_bits(gb, 2);
338 switch (v->dqprofile)
340 case DQPROFILE_SINGLE_EDGE:
341 case DQPROFILE_DOUBLE_EDGES:
342 v->dqsbedge = get_bits(gb, 2);
344 case DQPROFILE_ALL_MBS:
345 v->dqbilevel = get_bits1(gb);
348 default: break; //Forbidden ?
350 if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS)
352 pqdiff = get_bits(gb, 3);
353 if (pqdiff == 7) v->altpq = get_bits(gb, 5);
354 else v->altpq = v->pq + pqdiff + 1;
361 /** Put block onto picture
363 static void vc1_put_block(VC1Context *v, DCTELEM block[6][64])
367 DSPContext *dsp = &v->s.dsp;
371 for(k = 0; k < 6; k++)
372 for(j = 0; j < 8; j++)
373 for(i = 0; i < 8; i++)
374 block[k][i + j*8] = ((block[k][i + j*8] - 128) << 1) + 128;
377 ys = v->s.current_picture.linesize[0];
378 us = v->s.current_picture.linesize[1];
379 vs = v->s.current_picture.linesize[2];
382 dsp->put_pixels_clamped(block[0], Y, ys);
383 dsp->put_pixels_clamped(block[1], Y + 8, ys);
385 dsp->put_pixels_clamped(block[2], Y, ys);
386 dsp->put_pixels_clamped(block[3], Y + 8, ys);
388 if(!(v->s.flags & CODEC_FLAG_GRAY)) {
389 dsp->put_pixels_clamped(block[4], v->s.dest[1], us);
390 dsp->put_pixels_clamped(block[5], v->s.dest[2], vs);
394 /** Do motion compensation over 1 macroblock
395 * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
397 static void vc1_mc_1mv(VC1Context *v, int dir)
399 MpegEncContext *s = &v->s;
400 DSPContext *dsp = &v->s.dsp;
401 uint8_t *srcY, *srcU, *srcV;
402 int dxy, uvdxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
404 if(!v->s.last_picture.data[0])return;
406 mx = s->mv[dir][0][0];
407 my = s->mv[dir][0][1];
409 // store motion vectors for further use in B frames
410 if(s->pict_type == P_TYPE) {
411 s->current_picture.motion_val[1][s->block_index[0]][0] = mx;
412 s->current_picture.motion_val[1][s->block_index[0]][1] = my;
414 uvmx = (mx + ((mx & 3) == 3)) >> 1;
415 uvmy = (my + ((my & 3) == 3)) >> 1;
417 uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
418 uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
421 srcY = s->last_picture.data[0];
422 srcU = s->last_picture.data[1];
423 srcV = s->last_picture.data[2];
425 srcY = s->next_picture.data[0];
426 srcU = s->next_picture.data[1];
427 srcV = s->next_picture.data[2];
430 src_x = s->mb_x * 16 + (mx >> 2);
431 src_y = s->mb_y * 16 + (my >> 2);
432 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
433 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
435 if(v->profile != PROFILE_ADVANCED){
436 src_x = av_clip( src_x, -16, s->mb_width * 16);
437 src_y = av_clip( src_y, -16, s->mb_height * 16);
438 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
439 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
441 src_x = av_clip( src_x, -17, s->avctx->coded_width);
442 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
443 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
444 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
447 srcY += src_y * s->linesize + src_x;
448 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
449 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
451 /* for grayscale we should not try to read from unknown area */
452 if(s->flags & CODEC_FLAG_GRAY) {
453 srcU = s->edge_emu_buffer + 18 * s->linesize;
454 srcV = s->edge_emu_buffer + 18 * s->linesize;
457 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
458 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
459 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
460 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
462 srcY -= s->mspel * (1 + s->linesize);
463 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
464 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
465 srcY = s->edge_emu_buffer;
466 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
467 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
468 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
469 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
472 /* if we deal with range reduction we need to scale source blocks */
478 for(j = 0; j < 17 + s->mspel*2; j++) {
479 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
482 src = srcU; src2 = srcV;
483 for(j = 0; j < 9; j++) {
484 for(i = 0; i < 9; i++) {
485 src[i] = ((src[i] - 128) >> 1) + 128;
486 src2[i] = ((src2[i] - 128) >> 1) + 128;
488 src += s->uvlinesize;
489 src2 += s->uvlinesize;
492 /* if we deal with intensity compensation we need to scale source blocks */
493 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
498 for(j = 0; j < 17 + s->mspel*2; j++) {
499 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = v->luty[src[i]];
502 src = srcU; src2 = srcV;
503 for(j = 0; j < 9; j++) {
504 for(i = 0; i < 9; i++) {
505 src[i] = v->lutuv[src[i]];
506 src2[i] = v->lutuv[src2[i]];
508 src += s->uvlinesize;
509 src2 += s->uvlinesize;
512 srcY += s->mspel * (1 + s->linesize);
516 dxy = ((my & 3) << 2) | (mx & 3);
517 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
518 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
519 srcY += s->linesize * 8;
520 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd);
521 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
522 } else { // hpel mc - always used for luma
523 dxy = (my & 2) | ((mx & 2) >> 1);
526 dsp->put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
528 dsp->put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
531 if(s->flags & CODEC_FLAG_GRAY) return;
532 /* Chroma MC always uses qpel bilinear */
533 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
537 dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
538 dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
540 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
541 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
545 /** Do motion compensation for 4-MV macroblock - luminance block
547 static void vc1_mc_4mv_luma(VC1Context *v, int n)
549 MpegEncContext *s = &v->s;
550 DSPContext *dsp = &v->s.dsp;
552 int dxy, mx, my, src_x, src_y;
555 if(!v->s.last_picture.data[0])return;
558 srcY = s->last_picture.data[0];
560 off = s->linesize * 4 * (n&2) + (n&1) * 8;
562 src_x = s->mb_x * 16 + (n&1) * 8 + (mx >> 2);
563 src_y = s->mb_y * 16 + (n&2) * 4 + (my >> 2);
565 if(v->profile != PROFILE_ADVANCED){
566 src_x = av_clip( src_x, -16, s->mb_width * 16);
567 src_y = av_clip( src_y, -16, s->mb_height * 16);
569 src_x = av_clip( src_x, -17, s->avctx->coded_width);
570 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
573 srcY += src_y * s->linesize + src_x;
575 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
576 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 8 - s->mspel*2
577 || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 8 - s->mspel*2){
578 srcY -= s->mspel * (1 + s->linesize);
579 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 9+s->mspel*2, 9+s->mspel*2,
580 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
581 srcY = s->edge_emu_buffer;
582 /* if we deal with range reduction we need to scale source blocks */
588 for(j = 0; j < 9 + s->mspel*2; j++) {
589 for(i = 0; i < 9 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
593 /* if we deal with intensity compensation we need to scale source blocks */
594 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
599 for(j = 0; j < 9 + s->mspel*2; j++) {
600 for(i = 0; i < 9 + s->mspel*2; i++) src[i] = v->luty[src[i]];
604 srcY += s->mspel * (1 + s->linesize);
608 dxy = ((my & 3) << 2) | (mx & 3);
609 dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, v->rnd);
610 } else { // hpel mc - always used for luma
611 dxy = (my & 2) | ((mx & 2) >> 1);
613 dsp->put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
615 dsp->put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
619 static inline int median4(int a, int b, int c, int d)
622 if(c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2;
623 else return (FFMIN(b, c) + FFMAX(a, d)) / 2;
625 if(c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2;
626 else return (FFMIN(a, c) + FFMAX(b, d)) / 2;
631 /** Do motion compensation for 4-MV macroblock - both chroma blocks
633 static void vc1_mc_4mv_chroma(VC1Context *v)
635 MpegEncContext *s = &v->s;
636 DSPContext *dsp = &v->s.dsp;
637 uint8_t *srcU, *srcV;
638 int uvdxy, uvmx, uvmy, uvsrc_x, uvsrc_y;
639 int i, idx, tx = 0, ty = 0;
640 int mvx[4], mvy[4], intra[4];
641 static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
643 if(!v->s.last_picture.data[0])return;
644 if(s->flags & CODEC_FLAG_GRAY) return;
646 for(i = 0; i < 4; i++) {
647 mvx[i] = s->mv[0][i][0];
648 mvy[i] = s->mv[0][i][1];
649 intra[i] = v->mb_type[0][s->block_index[i]];
652 /* calculate chroma MV vector from four luma MVs */
653 idx = (intra[3] << 3) | (intra[2] << 2) | (intra[1] << 1) | intra[0];
654 if(!idx) { // all blocks are inter
655 tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]);
656 ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]);
657 } else if(count[idx] == 1) { // 3 inter blocks
660 tx = mid_pred(mvx[1], mvx[2], mvx[3]);
661 ty = mid_pred(mvy[1], mvy[2], mvy[3]);
664 tx = mid_pred(mvx[0], mvx[2], mvx[3]);
665 ty = mid_pred(mvy[0], mvy[2], mvy[3]);
668 tx = mid_pred(mvx[0], mvx[1], mvx[3]);
669 ty = mid_pred(mvy[0], mvy[1], mvy[3]);
672 tx = mid_pred(mvx[0], mvx[1], mvx[2]);
673 ty = mid_pred(mvy[0], mvy[1], mvy[2]);
676 } else if(count[idx] == 2) {
678 for(i=0; i<3;i++) if(!intra[i]) {t1 = i; break;}
679 for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;}
680 tx = (mvx[t1] + mvx[t2]) / 2;
681 ty = (mvy[t1] + mvy[t2]) / 2;
683 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
684 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
685 return; //no need to do MC for inter blocks
688 s->current_picture.motion_val[1][s->block_index[0]][0] = tx;
689 s->current_picture.motion_val[1][s->block_index[0]][1] = ty;
690 uvmx = (tx + ((tx&3) == 3)) >> 1;
691 uvmy = (ty + ((ty&3) == 3)) >> 1;
693 uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
694 uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
697 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
698 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
700 if(v->profile != PROFILE_ADVANCED){
701 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
702 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
704 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
705 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
708 srcU = s->last_picture.data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
709 srcV = s->last_picture.data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
710 if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
711 || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
712 || (unsigned)uvsrc_y > (s->v_edge_pos >> 1) - 9){
713 ff_emulated_edge_mc(s->edge_emu_buffer , srcU, s->uvlinesize, 8+1, 8+1,
714 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
715 ff_emulated_edge_mc(s->edge_emu_buffer + 16, srcV, s->uvlinesize, 8+1, 8+1,
716 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
717 srcU = s->edge_emu_buffer;
718 srcV = s->edge_emu_buffer + 16;
720 /* if we deal with range reduction we need to scale source blocks */
725 src = srcU; src2 = srcV;
726 for(j = 0; j < 9; j++) {
727 for(i = 0; i < 9; i++) {
728 src[i] = ((src[i] - 128) >> 1) + 128;
729 src2[i] = ((src2[i] - 128) >> 1) + 128;
731 src += s->uvlinesize;
732 src2 += s->uvlinesize;
735 /* if we deal with intensity compensation we need to scale source blocks */
736 if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
740 src = srcU; src2 = srcV;
741 for(j = 0; j < 9; j++) {
742 for(i = 0; i < 9; i++) {
743 src[i] = v->lutuv[src[i]];
744 src2[i] = v->lutuv[src2[i]];
746 src += s->uvlinesize;
747 src2 += s->uvlinesize;
752 /* Chroma MC always uses qpel bilinear */
753 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
757 dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
758 dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
760 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
761 dsp->put_no_rnd_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
765 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
768 * Decode Simple/Main Profiles sequence header
769 * @see Figure 7-8, p16-17
770 * @param avctx Codec context
771 * @param gb GetBit context initialized from Codec context extra_data
774 static int decode_sequence_header(AVCodecContext *avctx, GetBitContext *gb)
776 VC1Context *v = avctx->priv_data;
778 av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32));
779 v->profile = get_bits(gb, 2);
780 if (v->profile == PROFILE_COMPLEX)
782 av_log(avctx, AV_LOG_ERROR, "WMV3 Complex Profile is not fully supported\n");
785 if (v->profile == PROFILE_ADVANCED)
787 return decode_sequence_header_adv(v, gb);
791 v->res_sm = get_bits(gb, 2); //reserved
794 av_log(avctx, AV_LOG_ERROR,
795 "Reserved RES_SM=%i is forbidden\n", v->res_sm);
801 v->frmrtq_postproc = get_bits(gb, 3); //common
802 // (bitrate-32kbps)/64kbps
803 v->bitrtq_postproc = get_bits(gb, 5); //common
804 v->s.loop_filter = get_bits1(gb); //common
805 if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE)
807 av_log(avctx, AV_LOG_ERROR,
808 "LOOPFILTER shell not be enabled in simple profile\n");
811 v->res_x8 = get_bits1(gb); //reserved
812 v->multires = get_bits1(gb);
813 v->res_fasttx = get_bits1(gb);
816 v->s.dsp.vc1_inv_trans_8x8 = ff_simple_idct;
817 v->s.dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add;
818 v->s.dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add;
819 v->s.dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add;
822 v->fastuvmc = get_bits1(gb); //common
823 if (!v->profile && !v->fastuvmc)
825 av_log(avctx, AV_LOG_ERROR,
826 "FASTUVMC unavailable in Simple Profile\n");
829 v->extended_mv = get_bits1(gb); //common
830 if (!v->profile && v->extended_mv)
832 av_log(avctx, AV_LOG_ERROR,
833 "Extended MVs unavailable in Simple Profile\n");
836 v->dquant = get_bits(gb, 2); //common
837 v->vstransform = get_bits1(gb); //common
839 v->res_transtab = get_bits1(gb);
842 av_log(avctx, AV_LOG_ERROR,
843 "1 for reserved RES_TRANSTAB is forbidden\n");
847 v->overlap = get_bits1(gb); //common
849 v->s.resync_marker = get_bits1(gb);
850 v->rangered = get_bits1(gb);
851 if (v->rangered && v->profile == PROFILE_SIMPLE)
853 av_log(avctx, AV_LOG_INFO,
854 "RANGERED should be set to 0 in simple profile\n");
857 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
858 v->quantizer_mode = get_bits(gb, 2); //common
860 v->finterpflag = get_bits1(gb); //common
861 v->res_rtm_flag = get_bits1(gb); //reserved
862 if (!v->res_rtm_flag)
864 // av_log(avctx, AV_LOG_ERROR,
865 // "0 for reserved RES_RTM_FLAG is forbidden\n");
866 av_log(avctx, AV_LOG_ERROR,
867 "Old WMV3 version detected, only I-frames will be decoded\n");
870 //TODO: figure out what they mean (always 0x402F)
871 if(!v->res_fasttx) skip_bits(gb, 16);
872 av_log(avctx, AV_LOG_DEBUG,
873 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
874 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
875 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
876 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
877 v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
878 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
879 v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
880 v->dquant, v->quantizer_mode, avctx->max_b_frames
885 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
888 v->level = get_bits(gb, 3);
891 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
893 v->chromaformat = get_bits(gb, 2);
894 if (v->chromaformat != 1)
896 av_log(v->s.avctx, AV_LOG_ERROR,
897 "Only 4:2:0 chroma format supported\n");
902 v->frmrtq_postproc = get_bits(gb, 3); //common
903 // (bitrate-32kbps)/64kbps
904 v->bitrtq_postproc = get_bits(gb, 5); //common
905 v->postprocflag = get_bits1(gb); //common
907 v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
908 v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
909 v->s.avctx->width = v->s.avctx->coded_width;
910 v->s.avctx->height = v->s.avctx->coded_height;
911 v->broadcast = get_bits1(gb);
912 v->interlace = get_bits1(gb);
913 v->tfcntrflag = get_bits1(gb);
914 v->finterpflag = get_bits1(gb);
915 skip_bits1(gb); // reserved
917 v->s.h_edge_pos = v->s.avctx->coded_width;
918 v->s.v_edge_pos = v->s.avctx->coded_height;
920 av_log(v->s.avctx, AV_LOG_DEBUG,
921 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
922 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
923 "TFCTRflag=%i, FINTERPflag=%i\n",
924 v->level, v->frmrtq_postproc, v->bitrtq_postproc,
925 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
926 v->tfcntrflag, v->finterpflag
929 v->psf = get_bits1(gb);
930 if(v->psf) { //PsF, 6.1.13
931 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
934 v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
935 if(get_bits1(gb)) { //Display Info - decoding is not affected by it
937 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
938 v->s.avctx->width = v->s.width = w = get_bits(gb, 14) + 1;
939 v->s.avctx->height = v->s.height = h = get_bits(gb, 14) + 1;
940 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
942 ar = get_bits(gb, 4);
944 v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
948 v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
951 if(get_bits1(gb)){ //framerate stuff
953 v->s.avctx->time_base.num = 32;
954 v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
957 nr = get_bits(gb, 8);
958 dr = get_bits(gb, 4);
959 if(nr && nr < 8 && dr && dr < 3){
960 v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
961 v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
967 v->color_prim = get_bits(gb, 8);
968 v->transfer_char = get_bits(gb, 8);
969 v->matrix_coef = get_bits(gb, 8);
973 v->hrd_param_flag = get_bits1(gb);
974 if(v->hrd_param_flag) {
976 v->hrd_num_leaky_buckets = get_bits(gb, 5);
977 skip_bits(gb, 4); //bitrate exponent
978 skip_bits(gb, 4); //buffer size exponent
979 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
980 skip_bits(gb, 16); //hrd_rate[n]
981 skip_bits(gb, 16); //hrd_buffer[n]
987 static int decode_entry_point(AVCodecContext *avctx, GetBitContext *gb)
989 VC1Context *v = avctx->priv_data;
990 int i, blink, clentry, refdist;
992 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
993 blink = get_bits1(gb); // broken link
994 clentry = get_bits1(gb); // closed entry
995 v->panscanflag = get_bits1(gb);
996 refdist = get_bits1(gb); // refdist flag
997 v->s.loop_filter = get_bits1(gb);
998 v->fastuvmc = get_bits1(gb);
999 v->extended_mv = get_bits1(gb);
1000 v->dquant = get_bits(gb, 2);
1001 v->vstransform = get_bits1(gb);
1002 v->overlap = get_bits1(gb);
1003 v->quantizer_mode = get_bits(gb, 2);
1005 if(v->hrd_param_flag){
1006 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
1007 skip_bits(gb, 8); //hrd_full[n]
1012 avctx->coded_width = (get_bits(gb, 12)+1)<<1;
1013 avctx->coded_height = (get_bits(gb, 12)+1)<<1;
1016 v->extended_dmv = get_bits1(gb);
1018 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
1019 skip_bits(gb, 3); // Y range, ignored for now
1022 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
1023 skip_bits(gb, 3); // UV range, ignored for now
1026 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
1027 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
1028 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
1029 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
1030 blink, clentry, v->panscanflag, refdist, v->s.loop_filter,
1031 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
1036 static int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
1038 int pqindex, lowquant, status;
1040 if(v->finterpflag) v->interpfrm = get_bits1(gb);
1041 skip_bits(gb, 2); //framecnt unused
1043 if (v->rangered) v->rangeredfrm = get_bits1(gb);
1044 v->s.pict_type = get_bits1(gb);
1045 if (v->s.avctx->max_b_frames) {
1046 if (!v->s.pict_type) {
1047 if (get_bits1(gb)) v->s.pict_type = I_TYPE;
1048 else v->s.pict_type = B_TYPE;
1049 } else v->s.pict_type = P_TYPE;
1050 } else v->s.pict_type = v->s.pict_type ? P_TYPE : I_TYPE;
1053 if(v->s.pict_type == B_TYPE) {
1054 v->bfraction = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1055 v->bfraction = ff_vc1_bfraction_lut[v->bfraction];
1056 if(v->bfraction == 0) {
1057 v->s.pict_type = BI_TYPE;
1060 if(v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1061 skip_bits(gb, 7); // skip buffer fullness
1064 if(v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1066 if(v->s.pict_type == P_TYPE)
1069 /* Quantizer stuff */
1070 pqindex = get_bits(gb, 5);
1071 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1072 v->pq = ff_vc1_pquant_table[0][pqindex];
1074 v->pq = ff_vc1_pquant_table[1][pqindex];
1077 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1078 v->pquantizer = pqindex < 9;
1079 if (v->quantizer_mode == QUANT_NON_UNIFORM)
1081 v->pqindex = pqindex;
1082 if (pqindex < 9) v->halfpq = get_bits1(gb);
1084 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
1085 v->pquantizer = get_bits1(gb);
1087 if (v->extended_mv == 1) v->mvrange = get_unary(gb, 0, 3);
1088 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1089 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1090 v->range_x = 1 << (v->k_x - 1);
1091 v->range_y = 1 << (v->k_y - 1);
1092 if (v->profile == PROFILE_ADVANCED)
1094 if (v->postprocflag) v->postproc = get_bits1(gb);
1097 if (v->multires && v->s.pict_type != B_TYPE) v->respic = get_bits(gb, 2);
1099 if(v->res_x8 && (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)){
1100 v->x8_type = get_bits1(gb);
1101 }else v->x8_type = 0;
1102 //av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
1103 // (v->s.pict_type == P_TYPE) ? 'P' : ((v->s.pict_type == I_TYPE) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
1105 if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
1107 switch(v->s.pict_type) {
1109 if (v->pq < 5) v->tt_index = 0;
1110 else if(v->pq < 13) v->tt_index = 1;
1111 else v->tt_index = 2;
1113 lowquant = (v->pq > 12) ? 0 : 1;
1114 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
1115 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
1117 int scale, shift, i;
1118 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
1119 v->lumscale = get_bits(gb, 6);
1120 v->lumshift = get_bits(gb, 6);
1122 /* fill lookup tables for intensity compensation */
1125 shift = (255 - v->lumshift * 2) << 6;
1126 if(v->lumshift > 31)
1129 scale = v->lumscale + 32;
1130 if(v->lumshift > 31)
1131 shift = (v->lumshift - 64) << 6;
1133 shift = v->lumshift << 6;
1135 for(i = 0; i < 256; i++) {
1136 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
1137 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
1140 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1141 v->s.quarter_sample = 0;
1142 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1143 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1144 v->s.quarter_sample = 0;
1146 v->s.quarter_sample = 1;
1148 v->s.quarter_sample = 1;
1149 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));
1151 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1152 v->mv_mode2 == MV_PMODE_MIXED_MV)
1153 || v->mv_mode == MV_PMODE_MIXED_MV)
1155 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1156 if (status < 0) return -1;
1157 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1158 "Imode: %i, Invert: %i\n", status>>1, status&1);
1160 v->mv_type_is_raw = 0;
1161 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1163 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1164 if (status < 0) return -1;
1165 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1166 "Imode: %i, Invert: %i\n", status>>1, status&1);
1168 /* Hopefully this is correct for P frames */
1169 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1170 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1174 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1175 vop_dquant_decoding(v);
1178 v->ttfrm = 0; //FIXME Is that so ?
1181 v->ttmbf = get_bits1(gb);
1184 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1192 if (v->pq < 5) v->tt_index = 0;
1193 else if(v->pq < 13) v->tt_index = 1;
1194 else v->tt_index = 2;
1196 lowquant = (v->pq > 12) ? 0 : 1;
1197 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1198 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1199 v->s.mspel = v->s.quarter_sample;
1201 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1202 if (status < 0) return -1;
1203 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1204 "Imode: %i, Invert: %i\n", status>>1, status&1);
1205 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1206 if (status < 0) return -1;
1207 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1208 "Imode: %i, Invert: %i\n", status>>1, status&1);
1210 v->s.mv_table_index = get_bits(gb, 2);
1211 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1215 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1216 vop_dquant_decoding(v);
1222 v->ttmbf = get_bits1(gb);
1225 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1237 v->c_ac_table_index = decode012(gb);
1238 if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1240 v->y_ac_table_index = decode012(gb);
1243 v->s.dc_table_index = get_bits1(gb);
1246 if(v->s.pict_type == BI_TYPE) {
1247 v->s.pict_type = B_TYPE;
1253 static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
1255 int pqindex, lowquant;
1258 v->p_frame_skipped = 0;
1261 v->fcm = decode012(gb);
1262 if(v->fcm) return -1; // interlaced frames/fields are not implemented
1264 switch(get_unary(gb, 0, 4)) {
1266 v->s.pict_type = P_TYPE;
1269 v->s.pict_type = B_TYPE;
1272 v->s.pict_type = I_TYPE;
1275 v->s.pict_type = BI_TYPE;
1278 v->s.pict_type = P_TYPE; // skipped pic
1279 v->p_frame_skipped = 1;
1285 if(!v->interlace || v->psf) {
1286 v->rptfrm = get_bits(gb, 2);
1288 v->tff = get_bits1(gb);
1289 v->rptfrm = get_bits1(gb);
1292 if(v->panscanflag) {
1295 v->rnd = get_bits1(gb);
1297 v->uvsamp = get_bits1(gb);
1298 if(v->finterpflag) v->interpfrm = get_bits1(gb);
1299 if(v->s.pict_type == B_TYPE) {
1300 v->bfraction = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1301 v->bfraction = ff_vc1_bfraction_lut[v->bfraction];
1302 if(v->bfraction == 0) {
1303 v->s.pict_type = BI_TYPE; /* XXX: should not happen here */
1306 pqindex = get_bits(gb, 5);
1307 v->pqindex = pqindex;
1308 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1309 v->pq = ff_vc1_pquant_table[0][pqindex];
1311 v->pq = ff_vc1_pquant_table[1][pqindex];
1314 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1315 v->pquantizer = pqindex < 9;
1316 if (v->quantizer_mode == QUANT_NON_UNIFORM)
1318 v->pqindex = pqindex;
1319 if (pqindex < 9) v->halfpq = get_bits1(gb);
1321 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
1322 v->pquantizer = get_bits1(gb);
1324 if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
1326 switch(v->s.pict_type) {
1329 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
1330 if (status < 0) return -1;
1331 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
1332 "Imode: %i, Invert: %i\n", status>>1, status&1);
1333 v->condover = CONDOVER_NONE;
1334 if(v->overlap && v->pq <= 8) {
1335 v->condover = decode012(gb);
1336 if(v->condover == CONDOVER_SELECT) {
1337 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
1338 if (status < 0) return -1;
1339 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
1340 "Imode: %i, Invert: %i\n", status>>1, status&1);
1346 v->postproc = get_bits1(gb);
1347 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
1348 else v->mvrange = 0;
1349 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1350 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1351 v->range_x = 1 << (v->k_x - 1);
1352 v->range_y = 1 << (v->k_y - 1);
1354 if (v->pq < 5) v->tt_index = 0;
1355 else if(v->pq < 13) v->tt_index = 1;
1356 else v->tt_index = 2;
1358 lowquant = (v->pq > 12) ? 0 : 1;
1359 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
1360 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
1362 int scale, shift, i;
1363 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
1364 v->lumscale = get_bits(gb, 6);
1365 v->lumshift = get_bits(gb, 6);
1366 /* fill lookup tables for intensity compensation */
1369 shift = (255 - v->lumshift * 2) << 6;
1370 if(v->lumshift > 31)
1373 scale = v->lumscale + 32;
1374 if(v->lumshift > 31)
1375 shift = (v->lumshift - 64) << 6;
1377 shift = v->lumshift << 6;
1379 for(i = 0; i < 256; i++) {
1380 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
1381 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
1385 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1386 v->s.quarter_sample = 0;
1387 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1388 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1389 v->s.quarter_sample = 0;
1391 v->s.quarter_sample = 1;
1393 v->s.quarter_sample = 1;
1394 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));
1396 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1397 v->mv_mode2 == MV_PMODE_MIXED_MV)
1398 || v->mv_mode == MV_PMODE_MIXED_MV)
1400 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1401 if (status < 0) return -1;
1402 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1403 "Imode: %i, Invert: %i\n", status>>1, status&1);
1405 v->mv_type_is_raw = 0;
1406 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1408 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1409 if (status < 0) return -1;
1410 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1411 "Imode: %i, Invert: %i\n", status>>1, status&1);
1413 /* Hopefully this is correct for P frames */
1414 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1415 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1418 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1419 vop_dquant_decoding(v);
1422 v->ttfrm = 0; //FIXME Is that so ?
1425 v->ttmbf = get_bits1(gb);
1428 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1437 v->postproc = get_bits1(gb);
1438 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
1439 else v->mvrange = 0;
1440 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1441 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1442 v->range_x = 1 << (v->k_x - 1);
1443 v->range_y = 1 << (v->k_y - 1);
1445 if (v->pq < 5) v->tt_index = 0;
1446 else if(v->pq < 13) v->tt_index = 1;
1447 else v->tt_index = 2;
1449 lowquant = (v->pq > 12) ? 0 : 1;
1450 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1451 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1452 v->s.mspel = v->s.quarter_sample;
1454 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1455 if (status < 0) return -1;
1456 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1457 "Imode: %i, Invert: %i\n", status>>1, status&1);
1458 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1459 if (status < 0) return -1;
1460 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1461 "Imode: %i, Invert: %i\n", status>>1, status&1);
1463 v->s.mv_table_index = get_bits(gb, 2);
1464 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1468 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1469 vop_dquant_decoding(v);
1475 v->ttmbf = get_bits1(gb);
1478 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1488 v->c_ac_table_index = decode012(gb);
1489 if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1491 v->y_ac_table_index = decode012(gb);
1494 v->s.dc_table_index = get_bits1(gb);
1495 if ((v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE) && v->dquant) {
1496 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1497 vop_dquant_decoding(v);
1501 if(v->s.pict_type == BI_TYPE) {
1502 v->s.pict_type = B_TYPE;
1508 /***********************************************************************/
1510 * @defgroup block VC-1 Block-level functions
1511 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
1517 * @brief Get macroblock-level quantizer scale
1519 #define GET_MQUANT() \
1523 if (v->dqprofile == DQPROFILE_ALL_MBS) \
1527 mquant = (get_bits1(gb)) ? v->altpq : v->pq; \
1531 mqdiff = get_bits(gb, 3); \
1532 if (mqdiff != 7) mquant = v->pq + mqdiff; \
1533 else mquant = get_bits(gb, 5); \
1536 if(v->dqprofile == DQPROFILE_SINGLE_EDGE) \
1537 edges = 1 << v->dqsbedge; \
1538 else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
1539 edges = (3 << v->dqsbedge) % 15; \
1540 else if(v->dqprofile == DQPROFILE_FOUR_EDGES) \
1542 if((edges&1) && !s->mb_x) \
1543 mquant = v->altpq; \
1544 if((edges&2) && s->first_slice_line) \
1545 mquant = v->altpq; \
1546 if((edges&4) && s->mb_x == (s->mb_width - 1)) \
1547 mquant = v->altpq; \
1548 if((edges&8) && s->mb_y == (s->mb_height - 1)) \
1549 mquant = v->altpq; \
1553 * @def GET_MVDATA(_dmv_x, _dmv_y)
1554 * @brief Get MV differentials
1555 * @see MVDATA decoding from 8.3.5.2, p(1)20
1556 * @param _dmv_x Horizontal differential for decoded MV
1557 * @param _dmv_y Vertical differential for decoded MV
1559 #define GET_MVDATA(_dmv_x, _dmv_y) \
1560 index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table,\
1561 VC1_MV_DIFF_VLC_BITS, 2); \
1564 mb_has_coeffs = 1; \
1567 else mb_has_coeffs = 0; \
1569 if (!index) { _dmv_x = _dmv_y = 0; } \
1570 else if (index == 35) \
1572 _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
1573 _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
1575 else if (index == 36) \
1584 if (!s->quarter_sample && index1 == 5) val = 1; \
1586 if(size_table[index1] - val > 0) \
1587 val = get_bits(gb, size_table[index1] - val); \
1589 sign = 0 - (val&1); \
1590 _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
1593 if (!s->quarter_sample && index1 == 5) val = 1; \
1595 if(size_table[index1] - val > 0) \
1596 val = get_bits(gb, size_table[index1] - val); \
1598 sign = 0 - (val&1); \
1599 _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
1602 /** Predict and set motion vector
1604 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)
1606 int xy, wrap, off = 0;
1611 /* scale MV difference to be quad-pel */
1612 dmv_x <<= 1 - s->quarter_sample;
1613 dmv_y <<= 1 - s->quarter_sample;
1615 wrap = s->b8_stride;
1616 xy = s->block_index[n];
1619 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
1620 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
1621 s->current_picture.motion_val[1][xy][0] = 0;
1622 s->current_picture.motion_val[1][xy][1] = 0;
1623 if(mv1) { /* duplicate motion data for 1-MV block */
1624 s->current_picture.motion_val[0][xy + 1][0] = 0;
1625 s->current_picture.motion_val[0][xy + 1][1] = 0;
1626 s->current_picture.motion_val[0][xy + wrap][0] = 0;
1627 s->current_picture.motion_val[0][xy + wrap][1] = 0;
1628 s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
1629 s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
1630 s->current_picture.motion_val[1][xy + 1][0] = 0;
1631 s->current_picture.motion_val[1][xy + 1][1] = 0;
1632 s->current_picture.motion_val[1][xy + wrap][0] = 0;
1633 s->current_picture.motion_val[1][xy + wrap][1] = 0;
1634 s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
1635 s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
1640 C = s->current_picture.motion_val[0][xy - 1];
1641 A = s->current_picture.motion_val[0][xy - wrap];
1643 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
1645 //in 4-MV mode different blocks have different B predictor position
1648 off = (s->mb_x > 0) ? -1 : 1;
1651 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
1660 B = s->current_picture.motion_val[0][xy - wrap + off];
1662 if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds
1663 if(s->mb_width == 1) {
1667 px = mid_pred(A[0], B[0], C[0]);
1668 py = mid_pred(A[1], B[1], C[1]);
1670 } else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds
1676 /* Pullback MV as specified in 8.3.5.3.4 */
1679 qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0);
1680 qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0);
1681 X = (s->mb_width << 6) - 4;
1682 Y = (s->mb_height << 6) - 4;
1684 if(qx + px < -60) px = -60 - qx;
1685 if(qy + py < -60) py = -60 - qy;
1687 if(qx + px < -28) px = -28 - qx;
1688 if(qy + py < -28) py = -28 - qy;
1690 if(qx + px > X) px = X - qx;
1691 if(qy + py > Y) py = Y - qy;
1693 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1694 if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) {
1695 if(is_intra[xy - wrap])
1696 sum = FFABS(px) + FFABS(py);
1698 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1700 if(get_bits1(&s->gb)) {
1708 if(is_intra[xy - 1])
1709 sum = FFABS(px) + FFABS(py);
1711 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1713 if(get_bits1(&s->gb)) {
1723 /* store MV using signed modulus of MV range defined in 4.11 */
1724 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
1725 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
1726 if(mv1) { /* duplicate motion data for 1-MV block */
1727 s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0];
1728 s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1];
1729 s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0];
1730 s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1];
1731 s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0];
1732 s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1];
1736 /** Motion compensation for direct or interpolated blocks in B-frames
1738 static void vc1_interp_mc(VC1Context *v)
1740 MpegEncContext *s = &v->s;
1741 DSPContext *dsp = &v->s.dsp;
1742 uint8_t *srcY, *srcU, *srcV;
1743 int dxy, uvdxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
1745 if(!v->s.next_picture.data[0])return;
1747 mx = s->mv[1][0][0];
1748 my = s->mv[1][0][1];
1749 uvmx = (mx + ((mx & 3) == 3)) >> 1;
1750 uvmy = (my + ((my & 3) == 3)) >> 1;
1752 uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
1753 uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
1755 srcY = s->next_picture.data[0];
1756 srcU = s->next_picture.data[1];
1757 srcV = s->next_picture.data[2];
1759 src_x = s->mb_x * 16 + (mx >> 2);
1760 src_y = s->mb_y * 16 + (my >> 2);
1761 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
1762 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
1764 if(v->profile != PROFILE_ADVANCED){
1765 src_x = av_clip( src_x, -16, s->mb_width * 16);
1766 src_y = av_clip( src_y, -16, s->mb_height * 16);
1767 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
1768 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
1770 src_x = av_clip( src_x, -17, s->avctx->coded_width);
1771 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
1772 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
1773 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
1776 srcY += src_y * s->linesize + src_x;
1777 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
1778 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
1780 /* for grayscale we should not try to read from unknown area */
1781 if(s->flags & CODEC_FLAG_GRAY) {
1782 srcU = s->edge_emu_buffer + 18 * s->linesize;
1783 srcV = s->edge_emu_buffer + 18 * s->linesize;
1787 || (unsigned)src_x > s->h_edge_pos - (mx&3) - 16
1788 || (unsigned)src_y > s->v_edge_pos - (my&3) - 16){
1789 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
1791 srcY -= s->mspel * (1 + s->linesize);
1792 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
1793 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
1794 srcY = s->edge_emu_buffer;
1795 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
1796 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
1797 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
1798 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
1801 /* if we deal with range reduction we need to scale source blocks */
1802 if(v->rangeredfrm) {
1804 uint8_t *src, *src2;
1807 for(j = 0; j < 17 + s->mspel*2; j++) {
1808 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
1811 src = srcU; src2 = srcV;
1812 for(j = 0; j < 9; j++) {
1813 for(i = 0; i < 9; i++) {
1814 src[i] = ((src[i] - 128) >> 1) + 128;
1815 src2[i] = ((src2[i] - 128) >> 1) + 128;
1817 src += s->uvlinesize;
1818 src2 += s->uvlinesize;
1821 srcY += s->mspel * (1 + s->linesize);
1826 dxy = ((my & 1) << 1) | (mx & 1);
1828 dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
1830 if(s->flags & CODEC_FLAG_GRAY) return;
1831 /* Chroma MC always uses qpel blilinear */
1832 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
1835 dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
1836 dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
1839 static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
1843 #if B_FRACTION_DEN==256
1847 return 2 * ((value * n + 255) >> 9);
1848 return (value * n + 128) >> 8;
1851 n -= B_FRACTION_DEN;
1853 return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
1854 return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
1858 /** Reconstruct motion vector for B-frame and do motion compensation
1860 static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
1863 v->mv_mode2 = v->mv_mode;
1864 v->mv_mode = MV_PMODE_INTENSITY_COMP;
1869 if(v->use_ic) v->mv_mode = v->mv_mode2;
1872 if(mode == BMV_TYPE_INTERPOLATED) {
1875 if(v->use_ic) v->mv_mode = v->mv_mode2;
1879 if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2;
1880 vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
1881 if(v->use_ic) v->mv_mode = v->mv_mode2;
1884 static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype)
1886 MpegEncContext *s = &v->s;
1887 int xy, wrap, off = 0;
1892 const uint8_t *is_intra = v->mb_type[0];
1896 /* scale MV difference to be quad-pel */
1897 dmv_x[0] <<= 1 - s->quarter_sample;
1898 dmv_y[0] <<= 1 - s->quarter_sample;
1899 dmv_x[1] <<= 1 - s->quarter_sample;
1900 dmv_y[1] <<= 1 - s->quarter_sample;
1902 wrap = s->b8_stride;
1903 xy = s->block_index[0];
1906 s->current_picture.motion_val[0][xy][0] =
1907 s->current_picture.motion_val[0][xy][1] =
1908 s->current_picture.motion_val[1][xy][0] =
1909 s->current_picture.motion_val[1][xy][1] = 0;
1912 s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
1913 s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
1914 s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
1915 s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
1917 /* Pullback predicted motion vectors as specified in 8.4.5.4 */
1918 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));
1919 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));
1920 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));
1921 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));
1923 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
1924 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
1925 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
1926 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
1930 if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
1931 C = s->current_picture.motion_val[0][xy - 2];
1932 A = s->current_picture.motion_val[0][xy - wrap*2];
1933 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
1934 B = s->current_picture.motion_val[0][xy - wrap*2 + off];
1936 if(!s->mb_x) C[0] = C[1] = 0;
1937 if(!s->first_slice_line) { // predictor A is not out of bounds
1938 if(s->mb_width == 1) {
1942 px = mid_pred(A[0], B[0], C[0]);
1943 py = mid_pred(A[1], B[1], C[1]);
1945 } else if(s->mb_x) { // predictor C is not out of bounds
1951 /* Pullback MV as specified in 8.3.5.3.4 */
1954 if(v->profile < PROFILE_ADVANCED) {
1955 qx = (s->mb_x << 5);
1956 qy = (s->mb_y << 5);
1957 X = (s->mb_width << 5) - 4;
1958 Y = (s->mb_height << 5) - 4;
1959 if(qx + px < -28) px = -28 - qx;
1960 if(qy + py < -28) py = -28 - qy;
1961 if(qx + px > X) px = X - qx;
1962 if(qy + py > Y) py = Y - qy;
1964 qx = (s->mb_x << 6);
1965 qy = (s->mb_y << 6);
1966 X = (s->mb_width << 6) - 4;
1967 Y = (s->mb_height << 6) - 4;
1968 if(qx + px < -60) px = -60 - qx;
1969 if(qy + py < -60) py = -60 - qy;
1970 if(qx + px > X) px = X - qx;
1971 if(qy + py > Y) py = Y - qy;
1974 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1975 if(0 && !s->first_slice_line && s->mb_x) {
1976 if(is_intra[xy - wrap])
1977 sum = FFABS(px) + FFABS(py);
1979 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1981 if(get_bits1(&s->gb)) {
1989 if(is_intra[xy - 2])
1990 sum = FFABS(px) + FFABS(py);
1992 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1994 if(get_bits1(&s->gb)) {
2004 /* store MV using signed modulus of MV range defined in 4.11 */
2005 s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
2006 s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
2008 if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
2009 C = s->current_picture.motion_val[1][xy - 2];
2010 A = s->current_picture.motion_val[1][xy - wrap*2];
2011 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
2012 B = s->current_picture.motion_val[1][xy - wrap*2 + off];
2014 if(!s->mb_x) C[0] = C[1] = 0;
2015 if(!s->first_slice_line) { // predictor A is not out of bounds
2016 if(s->mb_width == 1) {
2020 px = mid_pred(A[0], B[0], C[0]);
2021 py = mid_pred(A[1], B[1], C[1]);
2023 } else if(s->mb_x) { // predictor C is not out of bounds
2029 /* Pullback MV as specified in 8.3.5.3.4 */
2032 if(v->profile < PROFILE_ADVANCED) {
2033 qx = (s->mb_x << 5);
2034 qy = (s->mb_y << 5);
2035 X = (s->mb_width << 5) - 4;
2036 Y = (s->mb_height << 5) - 4;
2037 if(qx + px < -28) px = -28 - qx;
2038 if(qy + py < -28) py = -28 - qy;
2039 if(qx + px > X) px = X - qx;
2040 if(qy + py > Y) py = Y - qy;
2042 qx = (s->mb_x << 6);
2043 qy = (s->mb_y << 6);
2044 X = (s->mb_width << 6) - 4;
2045 Y = (s->mb_height << 6) - 4;
2046 if(qx + px < -60) px = -60 - qx;
2047 if(qy + py < -60) py = -60 - qy;
2048 if(qx + px > X) px = X - qx;
2049 if(qy + py > Y) py = Y - qy;
2052 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
2053 if(0 && !s->first_slice_line && s->mb_x) {
2054 if(is_intra[xy - wrap])
2055 sum = FFABS(px) + FFABS(py);
2057 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
2059 if(get_bits1(&s->gb)) {
2067 if(is_intra[xy - 2])
2068 sum = FFABS(px) + FFABS(py);
2070 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
2072 if(get_bits1(&s->gb)) {
2082 /* store MV using signed modulus of MV range defined in 4.11 */
2084 s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
2085 s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
2087 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
2088 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
2089 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
2090 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
2093 /** Get predicted DC value for I-frames only
2094 * prediction dir: left=0, top=1
2095 * @param s MpegEncContext
2096 * @param[in] n block index in the current MB
2097 * @param dc_val_ptr Pointer to DC predictor
2098 * @param dir_ptr Prediction direction for use in AC prediction
2100 static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
2101 int16_t **dc_val_ptr, int *dir_ptr)
2103 int a, b, c, wrap, pred, scale;
2105 static const uint16_t dcpred[32] = {
2106 -1, 1024, 512, 341, 256, 205, 171, 146, 128,
2107 114, 102, 93, 85, 79, 73, 68, 64,
2108 60, 57, 54, 51, 49, 47, 45, 43,
2109 41, 39, 38, 37, 35, 34, 33
2112 /* find prediction - wmv3_dc_scale always used here in fact */
2113 if (n < 4) scale = s->y_dc_scale;
2114 else scale = s->c_dc_scale;
2116 wrap = s->block_wrap[n];
2117 dc_val= s->dc_val[0] + s->block_index[n];
2123 b = dc_val[ - 1 - wrap];
2124 a = dc_val[ - wrap];
2126 if (pq < 9 || !overlap)
2128 /* Set outer values */
2129 if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
2130 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
2134 /* Set outer values */
2135 if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
2136 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
2139 if (abs(a - b) <= abs(b - c)) {
2147 /* update predictor */
2148 *dc_val_ptr = &dc_val[0];
2153 /** Get predicted DC value
2154 * prediction dir: left=0, top=1
2155 * @param s MpegEncContext
2156 * @param[in] n block index in the current MB
2157 * @param dc_val_ptr Pointer to DC predictor
2158 * @param dir_ptr Prediction direction for use in AC prediction
2160 static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
2161 int a_avail, int c_avail,
2162 int16_t **dc_val_ptr, int *dir_ptr)
2164 int a, b, c, wrap, pred, scale;
2166 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2169 /* find prediction - wmv3_dc_scale always used here in fact */
2170 if (n < 4) scale = s->y_dc_scale;
2171 else scale = s->c_dc_scale;
2173 wrap = s->block_wrap[n];
2174 dc_val= s->dc_val[0] + s->block_index[n];
2180 b = dc_val[ - 1 - wrap];
2181 a = dc_val[ - wrap];
2182 /* scale predictors if needed */
2183 q1 = s->current_picture.qscale_table[mb_pos];
2184 if(c_avail && (n!= 1 && n!=3)) {
2185 q2 = s->current_picture.qscale_table[mb_pos - 1];
2187 c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2189 if(a_avail && (n!= 2 && n!=3)) {
2190 q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2192 a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2194 if(a_avail && c_avail && (n!=3)) {
2197 if(n != 2) off -= s->mb_stride;
2198 q2 = s->current_picture.qscale_table[off];
2200 b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2203 if(a_avail && c_avail) {
2204 if(abs(a - b) <= abs(b - c)) {
2211 } else if(a_avail) {
2214 } else if(c_avail) {
2222 /* update predictor */
2223 *dc_val_ptr = &dc_val[0];
2229 * @defgroup std_mb VC1 Macroblock-level functions in Simple/Main Profiles
2230 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
2234 static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
2236 int xy, wrap, pred, a, b, c;
2238 xy = s->block_index[n];
2239 wrap = s->b8_stride;
2244 a = s->coded_block[xy - 1 ];
2245 b = s->coded_block[xy - 1 - wrap];
2246 c = s->coded_block[xy - wrap];
2255 *coded_block_ptr = &s->coded_block[xy];
2261 * Decode one AC coefficient
2262 * @param v The VC1 context
2263 * @param last Last coefficient
2264 * @param skip How much zero coefficients to skip
2265 * @param value Decoded AC coefficient value
2268 static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset)
2270 GetBitContext *gb = &v->s.gb;
2271 int index, escape, run = 0, level = 0, lst = 0;
2273 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
2274 if (index != vc1_ac_sizes[codingset] - 1) {
2275 run = vc1_index_decode_table[codingset][index][0];
2276 level = vc1_index_decode_table[codingset][index][1];
2277 lst = index >= vc1_last_decode_table[codingset];
2281 escape = decode210(gb);
2283 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
2284 run = vc1_index_decode_table[codingset][index][0];
2285 level = vc1_index_decode_table[codingset][index][1];
2286 lst = index >= vc1_last_decode_table[codingset];
2289 level += vc1_last_delta_level_table[codingset][run];
2291 level += vc1_delta_level_table[codingset][run];
2294 run += vc1_last_delta_run_table[codingset][level] + 1;
2296 run += vc1_delta_run_table[codingset][level] + 1;
2302 lst = get_bits1(gb);
2303 if(v->s.esc3_level_length == 0) {
2304 if(v->pq < 8 || v->dquantfrm) { // table 59
2305 v->s.esc3_level_length = get_bits(gb, 3);
2306 if(!v->s.esc3_level_length)
2307 v->s.esc3_level_length = get_bits(gb, 2) + 8;
2309 v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
2311 v->s.esc3_run_length = 3 + get_bits(gb, 2);
2313 run = get_bits(gb, v->s.esc3_run_length);
2314 sign = get_bits1(gb);
2315 level = get_bits(gb, v->s.esc3_level_length);
2326 /** Decode intra block in intra frames - should be faster than decode_intra_block
2327 * @param v VC1Context
2328 * @param block block to decode
2329 * @param coded are AC coeffs present or not
2330 * @param codingset set of VLC to decode data
2332 static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset)
2334 GetBitContext *gb = &v->s.gb;
2335 MpegEncContext *s = &v->s;
2336 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2339 int16_t *ac_val, *ac_val2;
2342 /* Get DC differential */
2344 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2346 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2349 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2354 if (dcdiff == 119 /* ESC index value */)
2356 /* TODO: Optimize */
2357 if (v->pq == 1) dcdiff = get_bits(gb, 10);
2358 else if (v->pq == 2) dcdiff = get_bits(gb, 9);
2359 else dcdiff = get_bits(gb, 8);
2364 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2365 else if (v->pq == 2)
2366 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2373 dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
2376 /* Store the quantized DC coeff, used for prediction */
2378 block[0] = dcdiff * s->y_dc_scale;
2380 block[0] = dcdiff * s->c_dc_scale;
2393 int last = 0, skip, value;
2394 const int8_t *zz_table;
2398 scale = v->pq * 2 + v->halfpq;
2402 zz_table = ff_vc1_horizontal_zz;
2404 zz_table = ff_vc1_vertical_zz;
2406 zz_table = ff_vc1_normal_zz;
2408 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2410 if(dc_pred_dir) //left
2413 ac_val -= 16 * s->block_wrap[n];
2416 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2420 block[zz_table[i++]] = value;
2423 /* apply AC prediction if needed */
2425 if(dc_pred_dir) { //left
2426 for(k = 1; k < 8; k++)
2427 block[k << 3] += ac_val[k];
2429 for(k = 1; k < 8; k++)
2430 block[k] += ac_val[k + 8];
2433 /* save AC coeffs for further prediction */
2434 for(k = 1; k < 8; k++) {
2435 ac_val2[k] = block[k << 3];
2436 ac_val2[k + 8] = block[k];
2439 /* scale AC coeffs */
2440 for(k = 1; k < 64; k++)
2444 block[k] += (block[k] < 0) ? -v->pq : v->pq;
2447 if(s->ac_pred) i = 63;
2453 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2456 scale = v->pq * 2 + v->halfpq;
2457 memset(ac_val2, 0, 16 * 2);
2458 if(dc_pred_dir) {//left
2461 memcpy(ac_val2, ac_val, 8 * 2);
2463 ac_val -= 16 * s->block_wrap[n];
2465 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2468 /* apply AC prediction if needed */
2470 if(dc_pred_dir) { //left
2471 for(k = 1; k < 8; k++) {
2472 block[k << 3] = ac_val[k] * scale;
2473 if(!v->pquantizer && block[k << 3])
2474 block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq;
2477 for(k = 1; k < 8; k++) {
2478 block[k] = ac_val[k + 8] * scale;
2479 if(!v->pquantizer && block[k])
2480 block[k] += (block[k] < 0) ? -v->pq : v->pq;
2486 s->block_last_index[n] = i;
2491 /** Decode intra block in intra frames - should be faster than decode_intra_block
2492 * @param v VC1Context
2493 * @param block block to decode
2494 * @param coded are AC coeffs present or not
2495 * @param codingset set of VLC to decode data
2497 static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant)
2499 GetBitContext *gb = &v->s.gb;
2500 MpegEncContext *s = &v->s;
2501 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2504 int16_t *ac_val, *ac_val2;
2506 int a_avail = v->a_avail, c_avail = v->c_avail;
2507 int use_pred = s->ac_pred;
2510 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2512 /* Get DC differential */
2514 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2516 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2519 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2524 if (dcdiff == 119 /* ESC index value */)
2526 /* TODO: Optimize */
2527 if (mquant == 1) dcdiff = get_bits(gb, 10);
2528 else if (mquant == 2) dcdiff = get_bits(gb, 9);
2529 else dcdiff = get_bits(gb, 8);
2534 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2535 else if (mquant == 2)
2536 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2543 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
2546 /* Store the quantized DC coeff, used for prediction */
2548 block[0] = dcdiff * s->y_dc_scale;
2550 block[0] = dcdiff * s->c_dc_scale;
2559 /* check if AC is needed at all */
2560 if(!a_avail && !c_avail) use_pred = 0;
2561 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2564 scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0);
2566 if(dc_pred_dir) //left
2569 ac_val -= 16 * s->block_wrap[n];
2571 q1 = s->current_picture.qscale_table[mb_pos];
2572 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
2573 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2574 if(dc_pred_dir && n==1) q2 = q1;
2575 if(!dc_pred_dir && n==2) q2 = q1;
2579 int last = 0, skip, value;
2580 const int8_t *zz_table;
2585 zz_table = ff_vc1_horizontal_zz;
2587 zz_table = ff_vc1_vertical_zz;
2589 zz_table = ff_vc1_normal_zz;
2592 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2596 block[zz_table[i++]] = value;
2599 /* apply AC prediction if needed */
2601 /* scale predictors if needed*/
2603 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2604 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2606 if(dc_pred_dir) { //left
2607 for(k = 1; k < 8; k++)
2608 block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2610 for(k = 1; k < 8; k++)
2611 block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2614 if(dc_pred_dir) { //left
2615 for(k = 1; k < 8; k++)
2616 block[k << 3] += ac_val[k];
2618 for(k = 1; k < 8; k++)
2619 block[k] += ac_val[k + 8];
2623 /* save AC coeffs for further prediction */
2624 for(k = 1; k < 8; k++) {
2625 ac_val2[k] = block[k << 3];
2626 ac_val2[k + 8] = block[k];
2629 /* scale AC coeffs */
2630 for(k = 1; k < 64; k++)
2634 block[k] += (block[k] < 0) ? -mquant : mquant;
2637 if(use_pred) i = 63;
2638 } else { // no AC coeffs
2641 memset(ac_val2, 0, 16 * 2);
2642 if(dc_pred_dir) {//left
2644 memcpy(ac_val2, ac_val, 8 * 2);
2646 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2647 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2648 for(k = 1; k < 8; k++)
2649 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2654 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2656 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2657 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2658 for(k = 1; k < 8; k++)
2659 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2664 /* apply AC prediction if needed */
2666 if(dc_pred_dir) { //left
2667 for(k = 1; k < 8; k++) {
2668 block[k << 3] = ac_val2[k] * scale;
2669 if(!v->pquantizer && block[k << 3])
2670 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
2673 for(k = 1; k < 8; k++) {
2674 block[k] = ac_val2[k + 8] * scale;
2675 if(!v->pquantizer && block[k])
2676 block[k] += (block[k] < 0) ? -mquant : mquant;
2682 s->block_last_index[n] = i;
2687 /** Decode intra block in inter frames - more generic version than vc1_decode_i_block
2688 * @param v VC1Context
2689 * @param block block to decode
2690 * @param coded are AC coeffs present or not
2691 * @param mquant block quantizer
2692 * @param codingset set of VLC to decode data
2694 static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset)
2696 GetBitContext *gb = &v->s.gb;
2697 MpegEncContext *s = &v->s;
2698 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2701 int16_t *ac_val, *ac_val2;
2703 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2704 int a_avail = v->a_avail, c_avail = v->c_avail;
2705 int use_pred = s->ac_pred;
2709 /* XXX: Guard against dumb values of mquant */
2710 mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
2712 /* Set DC scale - y and c use the same */
2713 s->y_dc_scale = s->y_dc_scale_table[mquant];
2714 s->c_dc_scale = s->c_dc_scale_table[mquant];
2716 /* Get DC differential */
2718 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2720 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2723 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2728 if (dcdiff == 119 /* ESC index value */)
2730 /* TODO: Optimize */
2731 if (mquant == 1) dcdiff = get_bits(gb, 10);
2732 else if (mquant == 2) dcdiff = get_bits(gb, 9);
2733 else dcdiff = get_bits(gb, 8);
2738 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2739 else if (mquant == 2)
2740 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2747 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
2750 /* Store the quantized DC coeff, used for prediction */
2753 block[0] = dcdiff * s->y_dc_scale;
2755 block[0] = dcdiff * s->c_dc_scale;
2764 /* check if AC is needed at all and adjust direction if needed */
2765 if(!a_avail) dc_pred_dir = 1;
2766 if(!c_avail) dc_pred_dir = 0;
2767 if(!a_avail && !c_avail) use_pred = 0;
2768 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2771 scale = mquant * 2 + v->halfpq;
2773 if(dc_pred_dir) //left
2776 ac_val -= 16 * s->block_wrap[n];
2778 q1 = s->current_picture.qscale_table[mb_pos];
2779 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
2780 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2781 if(dc_pred_dir && n==1) q2 = q1;
2782 if(!dc_pred_dir && n==2) q2 = q1;
2786 int last = 0, skip, value;
2787 const int8_t *zz_table;
2790 zz_table = ff_vc1_simple_progressive_8x8_zz;
2793 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2797 block[zz_table[i++]] = value;
2800 /* apply AC prediction if needed */
2802 /* scale predictors if needed*/
2804 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2805 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2807 if(dc_pred_dir) { //left
2808 for(k = 1; k < 8; k++)
2809 block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2811 for(k = 1; k < 8; k++)
2812 block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2815 if(dc_pred_dir) { //left
2816 for(k = 1; k < 8; k++)
2817 block[k << 3] += ac_val[k];
2819 for(k = 1; k < 8; k++)
2820 block[k] += ac_val[k + 8];
2824 /* save AC coeffs for further prediction */
2825 for(k = 1; k < 8; k++) {
2826 ac_val2[k] = block[k << 3];
2827 ac_val2[k + 8] = block[k];
2830 /* scale AC coeffs */
2831 for(k = 1; k < 64; k++)
2835 block[k] += (block[k] < 0) ? -mquant : mquant;
2838 if(use_pred) i = 63;
2839 } else { // no AC coeffs
2842 memset(ac_val2, 0, 16 * 2);
2843 if(dc_pred_dir) {//left
2845 memcpy(ac_val2, ac_val, 8 * 2);
2847 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2848 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2849 for(k = 1; k < 8; k++)
2850 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2855 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2857 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2858 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2859 for(k = 1; k < 8; k++)
2860 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2865 /* apply AC prediction if needed */
2867 if(dc_pred_dir) { //left
2868 for(k = 1; k < 8; k++) {
2869 block[k << 3] = ac_val2[k] * scale;
2870 if(!v->pquantizer && block[k << 3])
2871 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
2874 for(k = 1; k < 8; k++) {
2875 block[k] = ac_val2[k + 8] * scale;
2876 if(!v->pquantizer && block[k])
2877 block[k] += (block[k] < 0) ? -mquant : mquant;
2883 s->block_last_index[n] = i;
2890 static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block,
2891 uint8_t *dst, int linesize, int skip_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;
2938 s->dsp.vc1_inv_trans_8x8(block);
2939 s->dsp.add_pixels_clamped(block, dst, linesize);
2943 for(j = 0; j < 4; j++) {
2944 last = subblkpat & (1 << (3 - j));
2946 off = (j & 1) * 4 + (j & 2) * 16;
2948 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2952 idx = ff_vc1_simple_progressive_4x4_zz[i++];
2953 block[idx + off] = value * scale;
2955 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2957 if(!(subblkpat & (1 << (3 - j))) && !skip_block)
2958 s->dsp.vc1_inv_trans_4x4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, block + off);
2962 for(j = 0; j < 2; j++) {
2963 last = subblkpat & (1 << (1 - j));
2967 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2971 if(v->profile < PROFILE_ADVANCED)
2972 idx = ff_vc1_simple_progressive_8x4_zz[i++];
2974 idx = ff_vc1_adv_progressive_8x4_zz[i++];
2975 block[idx + off] = value * scale;
2977 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2979 if(!(subblkpat & (1 << (1 - j))) && !skip_block)
2980 s->dsp.vc1_inv_trans_8x4(dst + j*4*linesize, linesize, block + off);
2984 for(j = 0; j < 2; j++) {
2985 last = subblkpat & (1 << (1 - j));
2989 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2993 if(v->profile < PROFILE_ADVANCED)
2994 idx = ff_vc1_simple_progressive_4x8_zz[i++];
2996 idx = ff_vc1_adv_progressive_4x8_zz[i++];
2997 block[idx + off] = value * scale;
2999 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
3001 if(!(subblkpat & (1 << (1 - j))) && !skip_block)
3002 s->dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
3010 /** Decode one P-frame MB (in Simple/Main profile)
3012 static int vc1_decode_p_mb(VC1Context *v)
3014 MpegEncContext *s = &v->s;
3015 GetBitContext *gb = &s->gb;
3017 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3018 int cbp; /* cbp decoding stuff */
3019 int mqdiff, mquant; /* MB quantization */
3020 int ttmb = v->ttfrm; /* MB Transform type */
3023 static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
3024 offset_table[6] = { 0, 1, 3, 7, 15, 31 };
3025 int mb_has_coeffs = 1; /* last_flag */
3026 int dmv_x, dmv_y; /* Differential MV components */
3027 int index, index1; /* LUT indices */
3028 int val, sign; /* temp values */
3029 int first_block = 1;
3031 int skipped, fourmv;
3033 mquant = v->pq; /* Loosy initialization */
3035 if (v->mv_type_is_raw)
3036 fourmv = get_bits1(gb);
3038 fourmv = v->mv_type_mb_plane[mb_pos];
3040 skipped = get_bits1(gb);
3042 skipped = v->s.mbskip_table[mb_pos];
3044 s->dsp.clear_blocks(s->block[0]);
3046 if (!fourmv) /* 1MV mode */
3050 GET_MVDATA(dmv_x, dmv_y);
3053 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3054 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3056 s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
3057 vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]);
3059 /* FIXME Set DC val for inter block ? */
3060 if (s->mb_intra && !mb_has_coeffs)
3063 s->ac_pred = get_bits1(gb);
3066 else if (mb_has_coeffs)
3068 if (s->mb_intra) s->ac_pred = get_bits1(gb);
3069 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3077 s->current_picture.qscale_table[mb_pos] = mquant;
3079 if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
3080 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
3081 VC1_TTMB_VLC_BITS, 2);
3082 if(!s->mb_intra) vc1_mc_1mv(v, 0);
3086 s->dc_val[0][s->block_index[i]] = 0;
3088 val = ((cbp >> (5 - i)) & 1);
3089 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3090 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3092 /* check if prediction blocks A and C are available */
3093 v->a_avail = v->c_avail = 0;
3094 if(i == 2 || i == 3 || !s->first_slice_line)
3095 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3096 if(i == 1 || i == 3 || s->mb_x)
3097 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3099 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
3100 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3101 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3102 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3103 s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3104 if(v->pq >= 9 && v->overlap) {
3106 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3108 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3111 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY));
3112 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3120 for(i = 0; i < 6; i++) {
3121 v->mb_type[0][s->block_index[i]] = 0;
3122 s->dc_val[0][s->block_index[i]] = 0;
3124 s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
3125 s->current_picture.qscale_table[mb_pos] = 0;
3126 vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
3133 if (!skipped /* unskipped MB */)
3135 int intra_count = 0, coded_inter = 0;
3136 int is_intra[6], is_coded[6];
3138 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3141 val = ((cbp >> (5 - i)) & 1);
3142 s->dc_val[0][s->block_index[i]] = 0;
3149 GET_MVDATA(dmv_x, dmv_y);
3151 vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
3152 if(!s->mb_intra) vc1_mc_4mv_luma(v, i);
3153 intra_count += s->mb_intra;
3154 is_intra[i] = s->mb_intra;
3155 is_coded[i] = mb_has_coeffs;
3158 is_intra[i] = (intra_count >= 3);
3161 if(i == 4) vc1_mc_4mv_chroma(v);
3162 v->mb_type[0][s->block_index[i]] = is_intra[i];
3163 if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i];
3165 // if there are no coded blocks then don't do anything more
3166 if(!intra_count && !coded_inter) return 0;
3169 s->current_picture.qscale_table[mb_pos] = mquant;
3170 /* test if block is intra and has pred */
3175 if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
3176 || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
3181 if(intrapred)s->ac_pred = get_bits1(gb);
3182 else s->ac_pred = 0;
3184 if (!v->ttmbf && coded_inter)
3185 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3189 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3190 s->mb_intra = is_intra[i];
3192 /* check if prediction blocks A and C are available */
3193 v->a_avail = v->c_avail = 0;
3194 if(i == 2 || i == 3 || !s->first_slice_line)
3195 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3196 if(i == 1 || i == 3 || s->mb_x)
3197 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3199 vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset);
3200 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3201 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3202 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3203 s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3204 if(v->pq >= 9 && v->overlap) {
3206 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3208 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3210 } else if(is_coded[i]) {
3211 status = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY));
3212 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3221 s->current_picture.qscale_table[mb_pos] = 0;
3222 for (i=0; i<6; i++) {
3223 v->mb_type[0][s->block_index[i]] = 0;
3224 s->dc_val[0][s->block_index[i]] = 0;
3228 vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]);
3229 vc1_mc_4mv_luma(v, i);
3231 vc1_mc_4mv_chroma(v);
3232 s->current_picture.qscale_table[mb_pos] = 0;
3237 /* Should never happen */
3241 /** Decode one B-frame MB (in Main profile)
3243 static void vc1_decode_b_mb(VC1Context *v)
3245 MpegEncContext *s = &v->s;
3246 GetBitContext *gb = &s->gb;
3248 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3249 int cbp = 0; /* cbp decoding stuff */
3250 int mqdiff, mquant; /* MB quantization */
3251 int ttmb = v->ttfrm; /* MB Transform type */
3253 static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
3254 offset_table[6] = { 0, 1, 3, 7, 15, 31 };
3255 int mb_has_coeffs = 0; /* last_flag */
3256 int index, index1; /* LUT indices */
3257 int val, sign; /* temp values */
3258 int first_block = 1;
3260 int skipped, direct;
3261 int dmv_x[2], dmv_y[2];
3262 int bmvtype = BMV_TYPE_BACKWARD;
3264 mquant = v->pq; /* Loosy initialization */
3268 direct = get_bits1(gb);
3270 direct = v->direct_mb_plane[mb_pos];
3272 skipped = get_bits1(gb);
3274 skipped = v->s.mbskip_table[mb_pos];
3276 s->dsp.clear_blocks(s->block[0]);
3277 dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
3278 for(i = 0; i < 6; i++) {
3279 v->mb_type[0][s->block_index[i]] = 0;
3280 s->dc_val[0][s->block_index[i]] = 0;
3282 s->current_picture.qscale_table[mb_pos] = 0;
3286 GET_MVDATA(dmv_x[0], dmv_y[0]);
3287 dmv_x[1] = dmv_x[0];
3288 dmv_y[1] = dmv_y[0];
3290 if(skipped || !s->mb_intra) {
3291 bmvtype = decode012(gb);
3294 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
3297 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
3300 bmvtype = BMV_TYPE_INTERPOLATED;
3301 dmv_x[0] = dmv_y[0] = 0;
3305 for(i = 0; i < 6; i++)
3306 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3309 if(direct) bmvtype = BMV_TYPE_INTERPOLATED;
3310 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3311 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3315 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3319 s->current_picture.qscale_table[mb_pos] = mquant;
3321 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3322 dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
3323 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3324 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3326 if(!mb_has_coeffs && !s->mb_intra) {
3327 /* no coded blocks - effectively skipped */
3328 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3329 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3332 if(s->mb_intra && !mb_has_coeffs) {
3334 s->current_picture.qscale_table[mb_pos] = mquant;
3335 s->ac_pred = get_bits1(gb);
3337 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3339 if(bmvtype == BMV_TYPE_INTERPOLATED) {
3340 GET_MVDATA(dmv_x[0], dmv_y[0]);
3341 if(!mb_has_coeffs) {
3342 /* interpolated skipped block */
3343 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3344 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3348 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3350 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3353 s->ac_pred = get_bits1(gb);
3354 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3356 s->current_picture.qscale_table[mb_pos] = mquant;
3357 if(!v->ttmbf && !s->mb_intra && mb_has_coeffs)
3358 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3364 s->dc_val[0][s->block_index[i]] = 0;
3366 val = ((cbp >> (5 - i)) & 1);
3367 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3368 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3370 /* check if prediction blocks A and C are available */
3371 v->a_avail = v->c_avail = 0;
3372 if(i == 2 || i == 3 || !s->first_slice_line)
3373 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3374 if(i == 1 || i == 3 || s->mb_x)
3375 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3377 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
3378 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3379 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3380 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3381 s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3383 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY));
3384 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3390 /** Decode blocks of I-frame
3392 static void vc1_decode_i_blocks(VC1Context *v)
3395 MpegEncContext *s = &v->s;
3400 /* select codingmode used for VLC tables selection */
3401 switch(v->y_ac_table_index){
3403 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3406 v->codingset = CS_HIGH_MOT_INTRA;
3409 v->codingset = CS_MID_RATE_INTRA;
3413 switch(v->c_ac_table_index){
3415 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3418 v->codingset2 = CS_HIGH_MOT_INTER;
3421 v->codingset2 = CS_MID_RATE_INTER;
3425 /* Set DC scale - y and c use the same */
3426 s->y_dc_scale = s->y_dc_scale_table[v->pq];
3427 s->c_dc_scale = s->c_dc_scale_table[v->pq];
3430 s->mb_x = s->mb_y = 0;
3432 s->first_slice_line = 1;
3433 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3434 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3435 ff_init_block_index(s);
3436 ff_update_block_index(s);
3437 s->dsp.clear_blocks(s->block[0]);
3438 mb_pos = s->mb_x + s->mb_y * s->mb_width;
3439 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
3440 s->current_picture.qscale_table[mb_pos] = v->pq;
3441 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3442 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3444 // do actual MB decoding and displaying
3445 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
3446 v->s.ac_pred = get_bits1(&v->s.gb);
3448 for(k = 0; k < 6; k++) {
3449 val = ((cbp >> (5 - k)) & 1);
3452 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
3456 cbp |= val << (5 - k);
3458 vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
3460 s->dsp.vc1_inv_trans_8x8(s->block[k]);
3461 if(v->pq >= 9 && v->overlap) {
3462 for(j = 0; j < 64; j++) s->block[k][j] += 128;
3466 vc1_put_block(v, s->block);
3467 if(v->pq >= 9 && v->overlap) {
3469 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
3470 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3471 if(!(s->flags & CODEC_FLAG_GRAY)) {
3472 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
3473 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
3476 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
3477 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3478 if(!s->first_slice_line) {
3479 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
3480 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
3481 if(!(s->flags & CODEC_FLAG_GRAY)) {
3482 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
3483 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
3486 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3487 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3490 if(get_bits_count(&s->gb) > v->bits) {
3491 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3492 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
3496 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3497 s->first_slice_line = 0;
3499 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3502 /** Decode blocks of I-frame for advanced profile
3504 static void vc1_decode_i_blocks_adv(VC1Context *v)
3507 MpegEncContext *s = &v->s;
3514 GetBitContext *gb = &s->gb;
3516 /* select codingmode used for VLC tables selection */
3517 switch(v->y_ac_table_index){
3519 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3522 v->codingset = CS_HIGH_MOT_INTRA;
3525 v->codingset = CS_MID_RATE_INTRA;
3529 switch(v->c_ac_table_index){
3531 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3534 v->codingset2 = CS_HIGH_MOT_INTER;
3537 v->codingset2 = CS_MID_RATE_INTER;
3542 s->mb_x = s->mb_y = 0;
3544 s->first_slice_line = 1;
3545 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3546 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3547 ff_init_block_index(s);
3548 ff_update_block_index(s);
3549 s->dsp.clear_blocks(s->block[0]);
3550 mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3551 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
3552 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3553 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3555 // do actual MB decoding and displaying
3556 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
3557 if(v->acpred_is_raw)
3558 v->s.ac_pred = get_bits1(&v->s.gb);
3560 v->s.ac_pred = v->acpred_plane[mb_pos];
3562 if(v->condover == CONDOVER_SELECT) {
3563 if(v->overflg_is_raw)
3564 overlap = get_bits1(&v->s.gb);
3566 overlap = v->over_flags_plane[mb_pos];
3568 overlap = (v->condover == CONDOVER_ALL);
3572 s->current_picture.qscale_table[mb_pos] = mquant;
3573 /* Set DC scale - y and c use the same */
3574 s->y_dc_scale = s->y_dc_scale_table[mquant];
3575 s->c_dc_scale = s->c_dc_scale_table[mquant];
3577 for(k = 0; k < 6; k++) {
3578 val = ((cbp >> (5 - k)) & 1);
3581 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
3585 cbp |= val << (5 - k);
3587 v->a_avail = !s->first_slice_line || (k==2 || k==3);
3588 v->c_avail = !!s->mb_x || (k==1 || k==3);
3590 vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant);
3592 s->dsp.vc1_inv_trans_8x8(s->block[k]);
3593 for(j = 0; j < 64; j++) s->block[k][j] += 128;
3596 vc1_put_block(v, s->block);
3599 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
3600 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3601 if(!(s->flags & CODEC_FLAG_GRAY)) {
3602 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
3603 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
3606 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
3607 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3608 if(!s->first_slice_line) {
3609 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
3610 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
3611 if(!(s->flags & CODEC_FLAG_GRAY)) {
3612 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
3613 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
3616 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3617 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3620 if(get_bits_count(&s->gb) > v->bits) {
3621 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3622 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
3626 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3627 s->first_slice_line = 0;
3629 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3632 static void vc1_decode_p_blocks(VC1Context *v)
3634 MpegEncContext *s = &v->s;
3636 /* select codingmode used for VLC tables selection */
3637 switch(v->c_ac_table_index){
3639 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3642 v->codingset = CS_HIGH_MOT_INTRA;
3645 v->codingset = CS_MID_RATE_INTRA;
3649 switch(v->c_ac_table_index){
3651 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3654 v->codingset2 = CS_HIGH_MOT_INTER;
3657 v->codingset2 = CS_MID_RATE_INTER;
3661 s->first_slice_line = 1;
3662 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3663 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3664 ff_init_block_index(s);
3665 ff_update_block_index(s);
3666 s->dsp.clear_blocks(s->block[0]);
3669 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
3670 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3671 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);
3675 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3676 s->first_slice_line = 0;
3678 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3681 static void vc1_decode_b_blocks(VC1Context *v)
3683 MpegEncContext *s = &v->s;
3685 /* select codingmode used for VLC tables selection */
3686 switch(v->c_ac_table_index){
3688 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3691 v->codingset = CS_HIGH_MOT_INTRA;
3694 v->codingset = CS_MID_RATE_INTRA;
3698 switch(v->c_ac_table_index){
3700 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3703 v->codingset2 = CS_HIGH_MOT_INTER;
3706 v->codingset2 = CS_MID_RATE_INTER;
3710 s->first_slice_line = 1;
3711 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3712 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3713 ff_init_block_index(s);
3714 ff_update_block_index(s);
3715 s->dsp.clear_blocks(s->block[0]);
3718 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
3719 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3720 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);
3724 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3725 s->first_slice_line = 0;
3727 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3730 static void vc1_decode_skip_blocks(VC1Context *v)
3732 MpegEncContext *s = &v->s;
3734 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3735 s->first_slice_line = 1;
3736 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3738 ff_init_block_index(s);
3739 ff_update_block_index(s);
3740 memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
3741 memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
3742 memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
3743 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3744 s->first_slice_line = 0;
3746 s->pict_type = P_TYPE;
3749 static void vc1_decode_blocks(VC1Context *v)
3752 v->s.esc3_level_length = 0;
3754 ff_intrax8_decode_picture(&v->x8, 2*v->pq+v->halfpq, v->pq*(!v->pquantizer) );
3757 switch(v->s.pict_type) {
3759 if(v->profile == PROFILE_ADVANCED)
3760 vc1_decode_i_blocks_adv(v);
3762 vc1_decode_i_blocks(v);
3765 if(v->p_frame_skipped)
3766 vc1_decode_skip_blocks(v);
3768 vc1_decode_p_blocks(v);
3772 if(v->profile == PROFILE_ADVANCED)
3773 vc1_decode_i_blocks_adv(v);
3775 vc1_decode_i_blocks(v);
3777 vc1_decode_b_blocks(v);
3783 /** Find VC-1 marker in buffer
3784 * @return position where next marker starts or end of buffer if no marker found
3786 static av_always_inline uint8_t* find_next_marker(uint8_t *src, uint8_t *end)
3788 uint32_t mrk = 0xFFFFFFFF;
3790 if(end-src < 4) return end;
3792 mrk = (mrk << 8) | *src++;
3799 static av_always_inline int vc1_unescape_buffer(uint8_t *src, int size, uint8_t *dst)
3804 for(dsize = 0; dsize < size; dsize++) *dst++ = *src++;
3807 for(i = 0; i < size; i++, src++) {
3808 if(src[0] == 3 && i >= 2 && !src[-1] && !src[-2] && i < size-1 && src[1] < 4) {
3809 dst[dsize++] = src[1];
3813 dst[dsize++] = *src;
3818 /** Initialize a VC1/WMV3 decoder
3819 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3820 * @todo TODO: Decypher remaining bits in extra_data
3822 static int vc1_decode_init(AVCodecContext *avctx)
3824 VC1Context *v = avctx->priv_data;
3825 MpegEncContext *s = &v->s;
3828 if (!avctx->extradata_size || !avctx->extradata) return -1;
3829 if (!(avctx->flags & CODEC_FLAG_GRAY))
3830 avctx->pix_fmt = PIX_FMT_YUV420P;
3832 avctx->pix_fmt = PIX_FMT_GRAY8;
3834 avctx->flags |= CODEC_FLAG_EMU_EDGE;
3835 v->s.flags |= CODEC_FLAG_EMU_EDGE;
3837 if(avctx->idct_algo==FF_IDCT_AUTO){
3838 avctx->idct_algo=FF_IDCT_WMV2;
3841 if(ff_h263_decode_init(avctx) < 0)
3843 if (vc1_init_common(v) < 0) return -1;
3845 avctx->coded_width = avctx->width;
3846 avctx->coded_height = avctx->height;
3847 if (avctx->codec_id == CODEC_ID_WMV3)
3851 // looks like WMV3 has a sequence header stored in the extradata
3852 // advanced sequence header may be before the first frame
3853 // the last byte of the extradata is a version number, 1 for the
3854 // samples we can decode
3856 init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
3858 if (decode_sequence_header(avctx, &gb) < 0)
3861 count = avctx->extradata_size*8 - get_bits_count(&gb);
3864 av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
3865 count, get_bits(&gb, count));
3869 av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
3871 } else { // VC1/WVC1
3872 uint8_t *start = avctx->extradata, *end = avctx->extradata + avctx->extradata_size;
3873 uint8_t *next; int size, buf2_size;
3874 uint8_t *buf2 = NULL;
3875 int seq_inited = 0, ep_inited = 0;
3877 if(avctx->extradata_size < 16) {
3878 av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
3882 buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
3883 if(start[0]) start++; // in WVC1 extradata first byte is its size
3885 for(; next < end; start = next){
3886 next = find_next_marker(start + 4, end);
3887 size = next - start - 4;
3888 if(size <= 0) continue;
3889 buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
3890 init_get_bits(&gb, buf2, buf2_size * 8);
3891 switch(AV_RB32(start)){
3892 case VC1_CODE_SEQHDR:
3893 if(decode_sequence_header(avctx, &gb) < 0){
3899 case VC1_CODE_ENTRYPOINT:
3900 if(decode_entry_point(avctx, &gb) < 0){
3909 if(!seq_inited || !ep_inited){
3910 av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
3914 avctx->has_b_frames= !!(avctx->max_b_frames);
3915 s->low_delay = !avctx->has_b_frames;
3917 s->mb_width = (avctx->coded_width+15)>>4;
3918 s->mb_height = (avctx->coded_height+15)>>4;
3920 /* Allocate mb bitplanes */
3921 v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3922 v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3923 v->acpred_plane = av_malloc(s->mb_stride * s->mb_height);
3924 v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height);
3926 /* allocate block type info in that way so it could be used with s->block_index[] */
3927 v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
3928 v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
3929 v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1;
3930 v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1);
3932 /* Init coded blocks info */
3933 if (v->profile == PROFILE_ADVANCED)
3935 // if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
3937 // if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
3941 ff_intrax8_common_init(&v->x8,s);
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 subtract 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 = {