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 = simple_idct;
819 v->fastuvmc = get_bits1(gb); //common
820 if (!v->profile && !v->fastuvmc)
822 av_log(avctx, AV_LOG_ERROR,
823 "FASTUVMC unavailable in Simple Profile\n");
826 v->extended_mv = get_bits1(gb); //common
827 if (!v->profile && v->extended_mv)
829 av_log(avctx, AV_LOG_ERROR,
830 "Extended MVs unavailable in Simple Profile\n");
833 v->dquant = get_bits(gb, 2); //common
834 v->vstransform = get_bits1(gb); //common
836 v->res_transtab = get_bits1(gb);
839 av_log(avctx, AV_LOG_ERROR,
840 "1 for reserved RES_TRANSTAB is forbidden\n");
844 v->overlap = get_bits1(gb); //common
846 v->s.resync_marker = get_bits1(gb);
847 v->rangered = get_bits1(gb);
848 if (v->rangered && v->profile == PROFILE_SIMPLE)
850 av_log(avctx, AV_LOG_INFO,
851 "RANGERED should be set to 0 in simple profile\n");
854 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
855 v->quantizer_mode = get_bits(gb, 2); //common
857 v->finterpflag = get_bits1(gb); //common
858 v->res_rtm_flag = get_bits1(gb); //reserved
859 if (!v->res_rtm_flag)
861 // av_log(avctx, AV_LOG_ERROR,
862 // "0 for reserved RES_RTM_FLAG is forbidden\n");
863 av_log(avctx, AV_LOG_ERROR,
864 "Old WMV3 version detected, only I-frames will be decoded\n");
867 //TODO: figure out what they mean (always 0x402F)
868 if(!v->res_fasttx) skip_bits(gb, 16);
869 av_log(avctx, AV_LOG_DEBUG,
870 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
871 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
872 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
873 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
874 v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
875 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
876 v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
877 v->dquant, v->quantizer_mode, avctx->max_b_frames
882 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
885 v->level = get_bits(gb, 3);
888 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
890 v->chromaformat = get_bits(gb, 2);
891 if (v->chromaformat != 1)
893 av_log(v->s.avctx, AV_LOG_ERROR,
894 "Only 4:2:0 chroma format supported\n");
899 v->frmrtq_postproc = get_bits(gb, 3); //common
900 // (bitrate-32kbps)/64kbps
901 v->bitrtq_postproc = get_bits(gb, 5); //common
902 v->postprocflag = get_bits1(gb); //common
904 v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
905 v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
906 v->s.avctx->width = v->s.avctx->coded_width;
907 v->s.avctx->height = v->s.avctx->coded_height;
908 v->broadcast = get_bits1(gb);
909 v->interlace = get_bits1(gb);
910 v->tfcntrflag = get_bits1(gb);
911 v->finterpflag = get_bits1(gb);
912 skip_bits1(gb); // reserved
914 v->s.h_edge_pos = v->s.avctx->coded_width;
915 v->s.v_edge_pos = v->s.avctx->coded_height;
917 av_log(v->s.avctx, AV_LOG_DEBUG,
918 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
919 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
920 "TFCTRflag=%i, FINTERPflag=%i\n",
921 v->level, v->frmrtq_postproc, v->bitrtq_postproc,
922 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
923 v->tfcntrflag, v->finterpflag
926 v->psf = get_bits1(gb);
927 if(v->psf) { //PsF, 6.1.13
928 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
931 v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
932 if(get_bits1(gb)) { //Display Info - decoding is not affected by it
934 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
935 v->s.avctx->width = v->s.width = w = get_bits(gb, 14) + 1;
936 v->s.avctx->height = v->s.height = h = get_bits(gb, 14) + 1;
937 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
939 ar = get_bits(gb, 4);
941 v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
945 v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
948 if(get_bits1(gb)){ //framerate stuff
950 v->s.avctx->time_base.num = 32;
951 v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
954 nr = get_bits(gb, 8);
955 dr = get_bits(gb, 4);
956 if(nr && nr < 8 && dr && dr < 3){
957 v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
958 v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
964 v->color_prim = get_bits(gb, 8);
965 v->transfer_char = get_bits(gb, 8);
966 v->matrix_coef = get_bits(gb, 8);
970 v->hrd_param_flag = get_bits1(gb);
971 if(v->hrd_param_flag) {
973 v->hrd_num_leaky_buckets = get_bits(gb, 5);
974 skip_bits(gb, 4); //bitrate exponent
975 skip_bits(gb, 4); //buffer size exponent
976 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
977 skip_bits(gb, 16); //hrd_rate[n]
978 skip_bits(gb, 16); //hrd_buffer[n]
984 static int decode_entry_point(AVCodecContext *avctx, GetBitContext *gb)
986 VC1Context *v = avctx->priv_data;
987 int i, blink, clentry, refdist;
989 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
990 blink = get_bits1(gb); // broken link
991 clentry = get_bits1(gb); // closed entry
992 v->panscanflag = get_bits1(gb);
993 refdist = get_bits1(gb); // refdist flag
994 v->s.loop_filter = get_bits1(gb);
995 v->fastuvmc = get_bits1(gb);
996 v->extended_mv = get_bits1(gb);
997 v->dquant = get_bits(gb, 2);
998 v->vstransform = get_bits1(gb);
999 v->overlap = get_bits1(gb);
1000 v->quantizer_mode = get_bits(gb, 2);
1002 if(v->hrd_param_flag){
1003 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
1004 skip_bits(gb, 8); //hrd_full[n]
1009 avctx->coded_width = (get_bits(gb, 12)+1)<<1;
1010 avctx->coded_height = (get_bits(gb, 12)+1)<<1;
1013 v->extended_dmv = get_bits1(gb);
1015 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
1016 skip_bits(gb, 3); // Y range, ignored for now
1019 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
1020 skip_bits(gb, 3); // UV range, ignored for now
1023 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
1024 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
1025 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
1026 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
1027 blink, clentry, v->panscanflag, refdist, v->s.loop_filter,
1028 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
1033 static int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
1035 int pqindex, lowquant, status;
1037 if(v->finterpflag) v->interpfrm = get_bits1(gb);
1038 skip_bits(gb, 2); //framecnt unused
1040 if (v->rangered) v->rangeredfrm = get_bits1(gb);
1041 v->s.pict_type = get_bits1(gb);
1042 if (v->s.avctx->max_b_frames) {
1043 if (!v->s.pict_type) {
1044 if (get_bits1(gb)) v->s.pict_type = I_TYPE;
1045 else v->s.pict_type = B_TYPE;
1046 } else v->s.pict_type = P_TYPE;
1047 } else v->s.pict_type = v->s.pict_type ? P_TYPE : I_TYPE;
1050 if(v->s.pict_type == B_TYPE) {
1051 v->bfraction = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1052 v->bfraction = ff_vc1_bfraction_lut[v->bfraction];
1053 if(v->bfraction == 0) {
1054 v->s.pict_type = BI_TYPE;
1057 if(v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1058 skip_bits(gb, 7); // skip buffer fullness
1061 if(v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1063 if(v->s.pict_type == P_TYPE)
1066 /* Quantizer stuff */
1067 pqindex = get_bits(gb, 5);
1068 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1069 v->pq = ff_vc1_pquant_table[0][pqindex];
1071 v->pq = ff_vc1_pquant_table[1][pqindex];
1074 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1075 v->pquantizer = pqindex < 9;
1076 if (v->quantizer_mode == QUANT_NON_UNIFORM)
1078 v->pqindex = pqindex;
1079 if (pqindex < 9) v->halfpq = get_bits1(gb);
1081 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
1082 v->pquantizer = get_bits1(gb);
1084 if (v->extended_mv == 1) v->mvrange = get_unary(gb, 0, 3);
1085 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1086 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1087 v->range_x = 1 << (v->k_x - 1);
1088 v->range_y = 1 << (v->k_y - 1);
1089 if (v->profile == PROFILE_ADVANCED)
1091 if (v->postprocflag) v->postproc = get_bits1(gb);
1094 if (v->multires && v->s.pict_type != B_TYPE) v->respic = get_bits(gb, 2);
1096 if(v->res_x8 && (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)){
1097 v->x8_type = get_bits1(gb);
1098 }else v->x8_type = 0;
1099 //av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
1100 // (v->s.pict_type == P_TYPE) ? 'P' : ((v->s.pict_type == I_TYPE) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
1102 if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
1104 switch(v->s.pict_type) {
1106 if (v->pq < 5) v->tt_index = 0;
1107 else if(v->pq < 13) v->tt_index = 1;
1108 else v->tt_index = 2;
1110 lowquant = (v->pq > 12) ? 0 : 1;
1111 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
1112 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
1114 int scale, shift, i;
1115 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
1116 v->lumscale = get_bits(gb, 6);
1117 v->lumshift = get_bits(gb, 6);
1119 /* fill lookup tables for intensity compensation */
1122 shift = (255 - v->lumshift * 2) << 6;
1123 if(v->lumshift > 31)
1126 scale = v->lumscale + 32;
1127 if(v->lumshift > 31)
1128 shift = (v->lumshift - 64) << 6;
1130 shift = v->lumshift << 6;
1132 for(i = 0; i < 256; i++) {
1133 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
1134 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
1137 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1138 v->s.quarter_sample = 0;
1139 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1140 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1141 v->s.quarter_sample = 0;
1143 v->s.quarter_sample = 1;
1145 v->s.quarter_sample = 1;
1146 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));
1148 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1149 v->mv_mode2 == MV_PMODE_MIXED_MV)
1150 || v->mv_mode == MV_PMODE_MIXED_MV)
1152 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1153 if (status < 0) return -1;
1154 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1155 "Imode: %i, Invert: %i\n", status>>1, status&1);
1157 v->mv_type_is_raw = 0;
1158 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1160 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1161 if (status < 0) return -1;
1162 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1163 "Imode: %i, Invert: %i\n", status>>1, status&1);
1165 /* Hopefully this is correct for P frames */
1166 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1167 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1171 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1172 vop_dquant_decoding(v);
1175 v->ttfrm = 0; //FIXME Is that so ?
1178 v->ttmbf = get_bits1(gb);
1181 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1189 if (v->pq < 5) v->tt_index = 0;
1190 else if(v->pq < 13) v->tt_index = 1;
1191 else v->tt_index = 2;
1193 lowquant = (v->pq > 12) ? 0 : 1;
1194 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1195 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1196 v->s.mspel = v->s.quarter_sample;
1198 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1199 if (status < 0) return -1;
1200 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1201 "Imode: %i, Invert: %i\n", status>>1, status&1);
1202 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1203 if (status < 0) return -1;
1204 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1205 "Imode: %i, Invert: %i\n", status>>1, status&1);
1207 v->s.mv_table_index = get_bits(gb, 2);
1208 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1212 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1213 vop_dquant_decoding(v);
1219 v->ttmbf = get_bits1(gb);
1222 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1234 v->c_ac_table_index = decode012(gb);
1235 if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1237 v->y_ac_table_index = decode012(gb);
1240 v->s.dc_table_index = get_bits1(gb);
1243 if(v->s.pict_type == BI_TYPE) {
1244 v->s.pict_type = B_TYPE;
1250 static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
1252 int pqindex, lowquant;
1255 v->p_frame_skipped = 0;
1258 v->fcm = decode012(gb);
1259 if(v->fcm) return -1; // interlaced frames/fields are not implemented
1261 switch(get_unary(gb, 0, 4)) {
1263 v->s.pict_type = P_TYPE;
1266 v->s.pict_type = B_TYPE;
1269 v->s.pict_type = I_TYPE;
1272 v->s.pict_type = BI_TYPE;
1275 v->s.pict_type = P_TYPE; // skipped pic
1276 v->p_frame_skipped = 1;
1282 if(!v->interlace || v->psf) {
1283 v->rptfrm = get_bits(gb, 2);
1285 v->tff = get_bits1(gb);
1286 v->rptfrm = get_bits1(gb);
1289 if(v->panscanflag) {
1292 v->rnd = get_bits1(gb);
1294 v->uvsamp = get_bits1(gb);
1295 if(v->finterpflag) v->interpfrm = get_bits1(gb);
1296 if(v->s.pict_type == B_TYPE) {
1297 v->bfraction = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1298 v->bfraction = ff_vc1_bfraction_lut[v->bfraction];
1299 if(v->bfraction == 0) {
1300 v->s.pict_type = BI_TYPE; /* XXX: should not happen here */
1303 pqindex = get_bits(gb, 5);
1304 v->pqindex = pqindex;
1305 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1306 v->pq = ff_vc1_pquant_table[0][pqindex];
1308 v->pq = ff_vc1_pquant_table[1][pqindex];
1311 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1312 v->pquantizer = pqindex < 9;
1313 if (v->quantizer_mode == QUANT_NON_UNIFORM)
1315 v->pqindex = pqindex;
1316 if (pqindex < 9) v->halfpq = get_bits1(gb);
1318 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
1319 v->pquantizer = get_bits1(gb);
1321 if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
1323 switch(v->s.pict_type) {
1326 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
1327 if (status < 0) return -1;
1328 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
1329 "Imode: %i, Invert: %i\n", status>>1, status&1);
1330 v->condover = CONDOVER_NONE;
1331 if(v->overlap && v->pq <= 8) {
1332 v->condover = decode012(gb);
1333 if(v->condover == CONDOVER_SELECT) {
1334 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
1335 if (status < 0) return -1;
1336 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
1337 "Imode: %i, Invert: %i\n", status>>1, status&1);
1343 v->postproc = get_bits1(gb);
1344 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
1345 else v->mvrange = 0;
1346 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1347 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1348 v->range_x = 1 << (v->k_x - 1);
1349 v->range_y = 1 << (v->k_y - 1);
1351 if (v->pq < 5) v->tt_index = 0;
1352 else if(v->pq < 13) v->tt_index = 1;
1353 else v->tt_index = 2;
1355 lowquant = (v->pq > 12) ? 0 : 1;
1356 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
1357 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
1359 int scale, shift, i;
1360 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
1361 v->lumscale = get_bits(gb, 6);
1362 v->lumshift = get_bits(gb, 6);
1363 /* fill lookup tables for intensity compensation */
1366 shift = (255 - v->lumshift * 2) << 6;
1367 if(v->lumshift > 31)
1370 scale = v->lumscale + 32;
1371 if(v->lumshift > 31)
1372 shift = (v->lumshift - 64) << 6;
1374 shift = v->lumshift << 6;
1376 for(i = 0; i < 256; i++) {
1377 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
1378 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
1382 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1383 v->s.quarter_sample = 0;
1384 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1385 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1386 v->s.quarter_sample = 0;
1388 v->s.quarter_sample = 1;
1390 v->s.quarter_sample = 1;
1391 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));
1393 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1394 v->mv_mode2 == MV_PMODE_MIXED_MV)
1395 || v->mv_mode == MV_PMODE_MIXED_MV)
1397 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1398 if (status < 0) return -1;
1399 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1400 "Imode: %i, Invert: %i\n", status>>1, status&1);
1402 v->mv_type_is_raw = 0;
1403 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1405 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1406 if (status < 0) return -1;
1407 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1408 "Imode: %i, Invert: %i\n", status>>1, status&1);
1410 /* Hopefully this is correct for P frames */
1411 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1412 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1415 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1416 vop_dquant_decoding(v);
1419 v->ttfrm = 0; //FIXME Is that so ?
1422 v->ttmbf = get_bits1(gb);
1425 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1434 v->postproc = get_bits1(gb);
1435 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
1436 else v->mvrange = 0;
1437 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1438 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1439 v->range_x = 1 << (v->k_x - 1);
1440 v->range_y = 1 << (v->k_y - 1);
1442 if (v->pq < 5) v->tt_index = 0;
1443 else if(v->pq < 13) v->tt_index = 1;
1444 else v->tt_index = 2;
1446 lowquant = (v->pq > 12) ? 0 : 1;
1447 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1448 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1449 v->s.mspel = v->s.quarter_sample;
1451 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1452 if (status < 0) return -1;
1453 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1454 "Imode: %i, Invert: %i\n", status>>1, status&1);
1455 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1456 if (status < 0) return -1;
1457 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1458 "Imode: %i, Invert: %i\n", status>>1, status&1);
1460 v->s.mv_table_index = get_bits(gb, 2);
1461 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1465 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1466 vop_dquant_decoding(v);
1472 v->ttmbf = get_bits1(gb);
1475 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1485 v->c_ac_table_index = decode012(gb);
1486 if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1488 v->y_ac_table_index = decode012(gb);
1491 v->s.dc_table_index = get_bits1(gb);
1492 if ((v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE) && v->dquant) {
1493 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1494 vop_dquant_decoding(v);
1498 if(v->s.pict_type == BI_TYPE) {
1499 v->s.pict_type = B_TYPE;
1505 /***********************************************************************/
1507 * @defgroup block VC-1 Block-level functions
1508 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
1514 * @brief Get macroblock-level quantizer scale
1516 #define GET_MQUANT() \
1520 if (v->dqprofile == DQPROFILE_ALL_MBS) \
1524 mquant = (get_bits1(gb)) ? v->altpq : v->pq; \
1528 mqdiff = get_bits(gb, 3); \
1529 if (mqdiff != 7) mquant = v->pq + mqdiff; \
1530 else mquant = get_bits(gb, 5); \
1533 if(v->dqprofile == DQPROFILE_SINGLE_EDGE) \
1534 edges = 1 << v->dqsbedge; \
1535 else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
1536 edges = (3 << v->dqsbedge) % 15; \
1537 else if(v->dqprofile == DQPROFILE_FOUR_EDGES) \
1539 if((edges&1) && !s->mb_x) \
1540 mquant = v->altpq; \
1541 if((edges&2) && s->first_slice_line) \
1542 mquant = v->altpq; \
1543 if((edges&4) && s->mb_x == (s->mb_width - 1)) \
1544 mquant = v->altpq; \
1545 if((edges&8) && s->mb_y == (s->mb_height - 1)) \
1546 mquant = v->altpq; \
1550 * @def GET_MVDATA(_dmv_x, _dmv_y)
1551 * @brief Get MV differentials
1552 * @see MVDATA decoding from 8.3.5.2, p(1)20
1553 * @param _dmv_x Horizontal differential for decoded MV
1554 * @param _dmv_y Vertical differential for decoded MV
1556 #define GET_MVDATA(_dmv_x, _dmv_y) \
1557 index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table,\
1558 VC1_MV_DIFF_VLC_BITS, 2); \
1561 mb_has_coeffs = 1; \
1564 else mb_has_coeffs = 0; \
1566 if (!index) { _dmv_x = _dmv_y = 0; } \
1567 else if (index == 35) \
1569 _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
1570 _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
1572 else if (index == 36) \
1581 if (!s->quarter_sample && index1 == 5) val = 1; \
1583 if(size_table[index1] - val > 0) \
1584 val = get_bits(gb, size_table[index1] - val); \
1586 sign = 0 - (val&1); \
1587 _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
1590 if (!s->quarter_sample && index1 == 5) val = 1; \
1592 if(size_table[index1] - val > 0) \
1593 val = get_bits(gb, size_table[index1] - val); \
1595 sign = 0 - (val&1); \
1596 _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
1599 /** Predict and set motion vector
1601 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)
1603 int xy, wrap, off = 0;
1608 /* scale MV difference to be quad-pel */
1609 dmv_x <<= 1 - s->quarter_sample;
1610 dmv_y <<= 1 - s->quarter_sample;
1612 wrap = s->b8_stride;
1613 xy = s->block_index[n];
1616 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
1617 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
1618 s->current_picture.motion_val[1][xy][0] = 0;
1619 s->current_picture.motion_val[1][xy][1] = 0;
1620 if(mv1) { /* duplicate motion data for 1-MV block */
1621 s->current_picture.motion_val[0][xy + 1][0] = 0;
1622 s->current_picture.motion_val[0][xy + 1][1] = 0;
1623 s->current_picture.motion_val[0][xy + wrap][0] = 0;
1624 s->current_picture.motion_val[0][xy + wrap][1] = 0;
1625 s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
1626 s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
1627 s->current_picture.motion_val[1][xy + 1][0] = 0;
1628 s->current_picture.motion_val[1][xy + 1][1] = 0;
1629 s->current_picture.motion_val[1][xy + wrap][0] = 0;
1630 s->current_picture.motion_val[1][xy + wrap][1] = 0;
1631 s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
1632 s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
1637 C = s->current_picture.motion_val[0][xy - 1];
1638 A = s->current_picture.motion_val[0][xy - wrap];
1640 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
1642 //in 4-MV mode different blocks have different B predictor position
1645 off = (s->mb_x > 0) ? -1 : 1;
1648 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
1657 B = s->current_picture.motion_val[0][xy - wrap + off];
1659 if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds
1660 if(s->mb_width == 1) {
1664 px = mid_pred(A[0], B[0], C[0]);
1665 py = mid_pred(A[1], B[1], C[1]);
1667 } else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds
1673 /* Pullback MV as specified in 8.3.5.3.4 */
1676 qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0);
1677 qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0);
1678 X = (s->mb_width << 6) - 4;
1679 Y = (s->mb_height << 6) - 4;
1681 if(qx + px < -60) px = -60 - qx;
1682 if(qy + py < -60) py = -60 - qy;
1684 if(qx + px < -28) px = -28 - qx;
1685 if(qy + py < -28) py = -28 - qy;
1687 if(qx + px > X) px = X - qx;
1688 if(qy + py > Y) py = Y - qy;
1690 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1691 if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) {
1692 if(is_intra[xy - wrap])
1693 sum = FFABS(px) + FFABS(py);
1695 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1697 if(get_bits1(&s->gb)) {
1705 if(is_intra[xy - 1])
1706 sum = FFABS(px) + FFABS(py);
1708 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1710 if(get_bits1(&s->gb)) {
1720 /* store MV using signed modulus of MV range defined in 4.11 */
1721 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
1722 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
1723 if(mv1) { /* duplicate motion data for 1-MV block */
1724 s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0];
1725 s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1];
1726 s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0];
1727 s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1];
1728 s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0];
1729 s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1];
1733 /** Motion compensation for direct or interpolated blocks in B-frames
1735 static void vc1_interp_mc(VC1Context *v)
1737 MpegEncContext *s = &v->s;
1738 DSPContext *dsp = &v->s.dsp;
1739 uint8_t *srcY, *srcU, *srcV;
1740 int dxy, uvdxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
1742 if(!v->s.next_picture.data[0])return;
1744 mx = s->mv[1][0][0];
1745 my = s->mv[1][0][1];
1746 uvmx = (mx + ((mx & 3) == 3)) >> 1;
1747 uvmy = (my + ((my & 3) == 3)) >> 1;
1749 uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
1750 uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
1752 srcY = s->next_picture.data[0];
1753 srcU = s->next_picture.data[1];
1754 srcV = s->next_picture.data[2];
1756 src_x = s->mb_x * 16 + (mx >> 2);
1757 src_y = s->mb_y * 16 + (my >> 2);
1758 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
1759 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
1761 if(v->profile != PROFILE_ADVANCED){
1762 src_x = av_clip( src_x, -16, s->mb_width * 16);
1763 src_y = av_clip( src_y, -16, s->mb_height * 16);
1764 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
1765 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
1767 src_x = av_clip( src_x, -17, s->avctx->coded_width);
1768 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
1769 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
1770 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
1773 srcY += src_y * s->linesize + src_x;
1774 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
1775 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
1777 /* for grayscale we should not try to read from unknown area */
1778 if(s->flags & CODEC_FLAG_GRAY) {
1779 srcU = s->edge_emu_buffer + 18 * s->linesize;
1780 srcV = s->edge_emu_buffer + 18 * s->linesize;
1784 || (unsigned)src_x > s->h_edge_pos - (mx&3) - 16
1785 || (unsigned)src_y > s->v_edge_pos - (my&3) - 16){
1786 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
1788 srcY -= s->mspel * (1 + s->linesize);
1789 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
1790 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
1791 srcY = s->edge_emu_buffer;
1792 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
1793 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
1794 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
1795 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
1798 /* if we deal with range reduction we need to scale source blocks */
1799 if(v->rangeredfrm) {
1801 uint8_t *src, *src2;
1804 for(j = 0; j < 17 + s->mspel*2; j++) {
1805 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
1808 src = srcU; src2 = srcV;
1809 for(j = 0; j < 9; j++) {
1810 for(i = 0; i < 9; i++) {
1811 src[i] = ((src[i] - 128) >> 1) + 128;
1812 src2[i] = ((src2[i] - 128) >> 1) + 128;
1814 src += s->uvlinesize;
1815 src2 += s->uvlinesize;
1818 srcY += s->mspel * (1 + s->linesize);
1823 dxy = ((my & 1) << 1) | (mx & 1);
1825 dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
1827 if(s->flags & CODEC_FLAG_GRAY) return;
1828 /* Chroma MC always uses qpel blilinear */
1829 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
1832 dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
1833 dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
1836 static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
1840 #if B_FRACTION_DEN==256
1844 return 2 * ((value * n + 255) >> 9);
1845 return (value * n + 128) >> 8;
1848 n -= B_FRACTION_DEN;
1850 return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
1851 return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
1855 /** Reconstruct motion vector for B-frame and do motion compensation
1857 static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
1860 v->mv_mode2 = v->mv_mode;
1861 v->mv_mode = MV_PMODE_INTENSITY_COMP;
1866 if(v->use_ic) v->mv_mode = v->mv_mode2;
1869 if(mode == BMV_TYPE_INTERPOLATED) {
1872 if(v->use_ic) v->mv_mode = v->mv_mode2;
1876 if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2;
1877 vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
1878 if(v->use_ic) v->mv_mode = v->mv_mode2;
1881 static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype)
1883 MpegEncContext *s = &v->s;
1884 int xy, wrap, off = 0;
1889 const uint8_t *is_intra = v->mb_type[0];
1893 /* scale MV difference to be quad-pel */
1894 dmv_x[0] <<= 1 - s->quarter_sample;
1895 dmv_y[0] <<= 1 - s->quarter_sample;
1896 dmv_x[1] <<= 1 - s->quarter_sample;
1897 dmv_y[1] <<= 1 - s->quarter_sample;
1899 wrap = s->b8_stride;
1900 xy = s->block_index[0];
1903 s->current_picture.motion_val[0][xy][0] =
1904 s->current_picture.motion_val[0][xy][1] =
1905 s->current_picture.motion_val[1][xy][0] =
1906 s->current_picture.motion_val[1][xy][1] = 0;
1909 s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
1910 s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
1911 s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
1912 s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
1914 /* Pullback predicted motion vectors as specified in 8.4.5.4 */
1915 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));
1916 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));
1917 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));
1918 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));
1920 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
1921 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
1922 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
1923 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
1927 if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
1928 C = s->current_picture.motion_val[0][xy - 2];
1929 A = s->current_picture.motion_val[0][xy - wrap*2];
1930 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
1931 B = s->current_picture.motion_val[0][xy - wrap*2 + off];
1933 if(!s->mb_x) C[0] = C[1] = 0;
1934 if(!s->first_slice_line) { // predictor A is not out of bounds
1935 if(s->mb_width == 1) {
1939 px = mid_pred(A[0], B[0], C[0]);
1940 py = mid_pred(A[1], B[1], C[1]);
1942 } else if(s->mb_x) { // predictor C is not out of bounds
1948 /* Pullback MV as specified in 8.3.5.3.4 */
1951 if(v->profile < PROFILE_ADVANCED) {
1952 qx = (s->mb_x << 5);
1953 qy = (s->mb_y << 5);
1954 X = (s->mb_width << 5) - 4;
1955 Y = (s->mb_height << 5) - 4;
1956 if(qx + px < -28) px = -28 - qx;
1957 if(qy + py < -28) py = -28 - qy;
1958 if(qx + px > X) px = X - qx;
1959 if(qy + py > Y) py = Y - qy;
1961 qx = (s->mb_x << 6);
1962 qy = (s->mb_y << 6);
1963 X = (s->mb_width << 6) - 4;
1964 Y = (s->mb_height << 6) - 4;
1965 if(qx + px < -60) px = -60 - qx;
1966 if(qy + py < -60) py = -60 - qy;
1967 if(qx + px > X) px = X - qx;
1968 if(qy + py > Y) py = Y - qy;
1971 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1972 if(0 && !s->first_slice_line && s->mb_x) {
1973 if(is_intra[xy - wrap])
1974 sum = FFABS(px) + FFABS(py);
1976 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1978 if(get_bits1(&s->gb)) {
1986 if(is_intra[xy - 2])
1987 sum = FFABS(px) + FFABS(py);
1989 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1991 if(get_bits1(&s->gb)) {
2001 /* store MV using signed modulus of MV range defined in 4.11 */
2002 s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
2003 s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
2005 if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
2006 C = s->current_picture.motion_val[1][xy - 2];
2007 A = s->current_picture.motion_val[1][xy - wrap*2];
2008 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
2009 B = s->current_picture.motion_val[1][xy - wrap*2 + off];
2011 if(!s->mb_x) C[0] = C[1] = 0;
2012 if(!s->first_slice_line) { // predictor A is not out of bounds
2013 if(s->mb_width == 1) {
2017 px = mid_pred(A[0], B[0], C[0]);
2018 py = mid_pred(A[1], B[1], C[1]);
2020 } else if(s->mb_x) { // predictor C is not out of bounds
2026 /* Pullback MV as specified in 8.3.5.3.4 */
2029 if(v->profile < PROFILE_ADVANCED) {
2030 qx = (s->mb_x << 5);
2031 qy = (s->mb_y << 5);
2032 X = (s->mb_width << 5) - 4;
2033 Y = (s->mb_height << 5) - 4;
2034 if(qx + px < -28) px = -28 - qx;
2035 if(qy + py < -28) py = -28 - qy;
2036 if(qx + px > X) px = X - qx;
2037 if(qy + py > Y) py = Y - qy;
2039 qx = (s->mb_x << 6);
2040 qy = (s->mb_y << 6);
2041 X = (s->mb_width << 6) - 4;
2042 Y = (s->mb_height << 6) - 4;
2043 if(qx + px < -60) px = -60 - qx;
2044 if(qy + py < -60) py = -60 - qy;
2045 if(qx + px > X) px = X - qx;
2046 if(qy + py > Y) py = Y - qy;
2049 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
2050 if(0 && !s->first_slice_line && s->mb_x) {
2051 if(is_intra[xy - wrap])
2052 sum = FFABS(px) + FFABS(py);
2054 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
2056 if(get_bits1(&s->gb)) {
2064 if(is_intra[xy - 2])
2065 sum = FFABS(px) + FFABS(py);
2067 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
2069 if(get_bits1(&s->gb)) {
2079 /* store MV using signed modulus of MV range defined in 4.11 */
2081 s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
2082 s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
2084 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
2085 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
2086 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
2087 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
2090 /** Get predicted DC value for I-frames only
2091 * prediction dir: left=0, top=1
2092 * @param s MpegEncContext
2093 * @param[in] n block index in the current MB
2094 * @param dc_val_ptr Pointer to DC predictor
2095 * @param dir_ptr Prediction direction for use in AC prediction
2097 static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
2098 int16_t **dc_val_ptr, int *dir_ptr)
2100 int a, b, c, wrap, pred, scale;
2102 static const uint16_t dcpred[32] = {
2103 -1, 1024, 512, 341, 256, 205, 171, 146, 128,
2104 114, 102, 93, 85, 79, 73, 68, 64,
2105 60, 57, 54, 51, 49, 47, 45, 43,
2106 41, 39, 38, 37, 35, 34, 33
2109 /* find prediction - wmv3_dc_scale always used here in fact */
2110 if (n < 4) scale = s->y_dc_scale;
2111 else scale = s->c_dc_scale;
2113 wrap = s->block_wrap[n];
2114 dc_val= s->dc_val[0] + s->block_index[n];
2120 b = dc_val[ - 1 - wrap];
2121 a = dc_val[ - wrap];
2123 if (pq < 9 || !overlap)
2125 /* Set outer values */
2126 if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
2127 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
2131 /* Set outer values */
2132 if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
2133 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
2136 if (abs(a - b) <= abs(b - c)) {
2144 /* update predictor */
2145 *dc_val_ptr = &dc_val[0];
2150 /** Get predicted DC value
2151 * prediction dir: left=0, top=1
2152 * @param s MpegEncContext
2153 * @param[in] n block index in the current MB
2154 * @param dc_val_ptr Pointer to DC predictor
2155 * @param dir_ptr Prediction direction for use in AC prediction
2157 static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
2158 int a_avail, int c_avail,
2159 int16_t **dc_val_ptr, int *dir_ptr)
2161 int a, b, c, wrap, pred, scale;
2163 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2166 /* find prediction - wmv3_dc_scale always used here in fact */
2167 if (n < 4) scale = s->y_dc_scale;
2168 else scale = s->c_dc_scale;
2170 wrap = s->block_wrap[n];
2171 dc_val= s->dc_val[0] + s->block_index[n];
2177 b = dc_val[ - 1 - wrap];
2178 a = dc_val[ - wrap];
2179 /* scale predictors if needed */
2180 q1 = s->current_picture.qscale_table[mb_pos];
2181 if(c_avail && (n!= 1 && n!=3)) {
2182 q2 = s->current_picture.qscale_table[mb_pos - 1];
2184 c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2186 if(a_avail && (n!= 2 && n!=3)) {
2187 q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2189 a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2191 if(a_avail && c_avail && (n!=3)) {
2194 if(n != 2) off -= s->mb_stride;
2195 q2 = s->current_picture.qscale_table[off];
2197 b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2200 if(a_avail && c_avail) {
2201 if(abs(a - b) <= abs(b - c)) {
2208 } else if(a_avail) {
2211 } else if(c_avail) {
2219 /* update predictor */
2220 *dc_val_ptr = &dc_val[0];
2226 * @defgroup std_mb VC1 Macroblock-level functions in Simple/Main Profiles
2227 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
2231 static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
2233 int xy, wrap, pred, a, b, c;
2235 xy = s->block_index[n];
2236 wrap = s->b8_stride;
2241 a = s->coded_block[xy - 1 ];
2242 b = s->coded_block[xy - 1 - wrap];
2243 c = s->coded_block[xy - wrap];
2252 *coded_block_ptr = &s->coded_block[xy];
2258 * Decode one AC coefficient
2259 * @param v The VC1 context
2260 * @param last Last coefficient
2261 * @param skip How much zero coefficients to skip
2262 * @param value Decoded AC coefficient value
2265 static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset)
2267 GetBitContext *gb = &v->s.gb;
2268 int index, escape, run = 0, level = 0, lst = 0;
2270 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
2271 if (index != vc1_ac_sizes[codingset] - 1) {
2272 run = vc1_index_decode_table[codingset][index][0];
2273 level = vc1_index_decode_table[codingset][index][1];
2274 lst = index >= vc1_last_decode_table[codingset];
2278 escape = decode210(gb);
2280 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
2281 run = vc1_index_decode_table[codingset][index][0];
2282 level = vc1_index_decode_table[codingset][index][1];
2283 lst = index >= vc1_last_decode_table[codingset];
2286 level += vc1_last_delta_level_table[codingset][run];
2288 level += vc1_delta_level_table[codingset][run];
2291 run += vc1_last_delta_run_table[codingset][level] + 1;
2293 run += vc1_delta_run_table[codingset][level] + 1;
2299 lst = get_bits1(gb);
2300 if(v->s.esc3_level_length == 0) {
2301 if(v->pq < 8 || v->dquantfrm) { // table 59
2302 v->s.esc3_level_length = get_bits(gb, 3);
2303 if(!v->s.esc3_level_length)
2304 v->s.esc3_level_length = get_bits(gb, 2) + 8;
2306 v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
2308 v->s.esc3_run_length = 3 + get_bits(gb, 2);
2310 run = get_bits(gb, v->s.esc3_run_length);
2311 sign = get_bits1(gb);
2312 level = get_bits(gb, v->s.esc3_level_length);
2323 /** Decode intra block in intra frames - should be faster than decode_intra_block
2324 * @param v VC1Context
2325 * @param block block to decode
2326 * @param coded are AC coeffs present or not
2327 * @param codingset set of VLC to decode data
2329 static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset)
2331 GetBitContext *gb = &v->s.gb;
2332 MpegEncContext *s = &v->s;
2333 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2336 int16_t *ac_val, *ac_val2;
2339 /* Get DC differential */
2341 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2343 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2346 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2351 if (dcdiff == 119 /* ESC index value */)
2353 /* TODO: Optimize */
2354 if (v->pq == 1) dcdiff = get_bits(gb, 10);
2355 else if (v->pq == 2) dcdiff = get_bits(gb, 9);
2356 else dcdiff = get_bits(gb, 8);
2361 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2362 else if (v->pq == 2)
2363 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2370 dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
2373 /* Store the quantized DC coeff, used for prediction */
2375 block[0] = dcdiff * s->y_dc_scale;
2377 block[0] = dcdiff * s->c_dc_scale;
2390 int last = 0, skip, value;
2391 const int8_t *zz_table;
2395 scale = v->pq * 2 + v->halfpq;
2399 zz_table = ff_vc1_horizontal_zz;
2401 zz_table = ff_vc1_vertical_zz;
2403 zz_table = ff_vc1_normal_zz;
2405 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2407 if(dc_pred_dir) //left
2410 ac_val -= 16 * s->block_wrap[n];
2413 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2417 block[zz_table[i++]] = value;
2420 /* apply AC prediction if needed */
2422 if(dc_pred_dir) { //left
2423 for(k = 1; k < 8; k++)
2424 block[k << 3] += ac_val[k];
2426 for(k = 1; k < 8; k++)
2427 block[k] += ac_val[k + 8];
2430 /* save AC coeffs for further prediction */
2431 for(k = 1; k < 8; k++) {
2432 ac_val2[k] = block[k << 3];
2433 ac_val2[k + 8] = block[k];
2436 /* scale AC coeffs */
2437 for(k = 1; k < 64; k++)
2441 block[k] += (block[k] < 0) ? -v->pq : v->pq;
2444 if(s->ac_pred) i = 63;
2450 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2453 scale = v->pq * 2 + v->halfpq;
2454 memset(ac_val2, 0, 16 * 2);
2455 if(dc_pred_dir) {//left
2458 memcpy(ac_val2, ac_val, 8 * 2);
2460 ac_val -= 16 * s->block_wrap[n];
2462 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2465 /* apply AC prediction if needed */
2467 if(dc_pred_dir) { //left
2468 for(k = 1; k < 8; k++) {
2469 block[k << 3] = ac_val[k] * scale;
2470 if(!v->pquantizer && block[k << 3])
2471 block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq;
2474 for(k = 1; k < 8; k++) {
2475 block[k] = ac_val[k + 8] * scale;
2476 if(!v->pquantizer && block[k])
2477 block[k] += (block[k] < 0) ? -v->pq : v->pq;
2483 s->block_last_index[n] = i;
2488 /** Decode intra block in intra frames - should be faster than decode_intra_block
2489 * @param v VC1Context
2490 * @param block block to decode
2491 * @param coded are AC coeffs present or not
2492 * @param codingset set of VLC to decode data
2494 static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant)
2496 GetBitContext *gb = &v->s.gb;
2497 MpegEncContext *s = &v->s;
2498 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2501 int16_t *ac_val, *ac_val2;
2503 int a_avail = v->a_avail, c_avail = v->c_avail;
2504 int use_pred = s->ac_pred;
2507 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2509 /* Get DC differential */
2511 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2513 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2516 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2521 if (dcdiff == 119 /* ESC index value */)
2523 /* TODO: Optimize */
2524 if (mquant == 1) dcdiff = get_bits(gb, 10);
2525 else if (mquant == 2) dcdiff = get_bits(gb, 9);
2526 else dcdiff = get_bits(gb, 8);
2531 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2532 else if (mquant == 2)
2533 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2540 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
2543 /* Store the quantized DC coeff, used for prediction */
2545 block[0] = dcdiff * s->y_dc_scale;
2547 block[0] = dcdiff * s->c_dc_scale;
2556 /* check if AC is needed at all */
2557 if(!a_avail && !c_avail) use_pred = 0;
2558 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2561 scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0);
2563 if(dc_pred_dir) //left
2566 ac_val -= 16 * s->block_wrap[n];
2568 q1 = s->current_picture.qscale_table[mb_pos];
2569 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
2570 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2571 if(dc_pred_dir && n==1) q2 = q1;
2572 if(!dc_pred_dir && n==2) q2 = q1;
2576 int last = 0, skip, value;
2577 const int8_t *zz_table;
2582 zz_table = ff_vc1_horizontal_zz;
2584 zz_table = ff_vc1_vertical_zz;
2586 zz_table = ff_vc1_normal_zz;
2589 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2593 block[zz_table[i++]] = value;
2596 /* apply AC prediction if needed */
2598 /* scale predictors if needed*/
2600 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2601 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2603 if(dc_pred_dir) { //left
2604 for(k = 1; k < 8; k++)
2605 block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2607 for(k = 1; k < 8; k++)
2608 block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2611 if(dc_pred_dir) { //left
2612 for(k = 1; k < 8; k++)
2613 block[k << 3] += ac_val[k];
2615 for(k = 1; k < 8; k++)
2616 block[k] += ac_val[k + 8];
2620 /* save AC coeffs for further prediction */
2621 for(k = 1; k < 8; k++) {
2622 ac_val2[k] = block[k << 3];
2623 ac_val2[k + 8] = block[k];
2626 /* scale AC coeffs */
2627 for(k = 1; k < 64; k++)
2631 block[k] += (block[k] < 0) ? -mquant : mquant;
2634 if(use_pred) i = 63;
2635 } else { // no AC coeffs
2638 memset(ac_val2, 0, 16 * 2);
2639 if(dc_pred_dir) {//left
2641 memcpy(ac_val2, ac_val, 8 * 2);
2643 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2644 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2645 for(k = 1; k < 8; k++)
2646 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2651 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2653 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2654 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2655 for(k = 1; k < 8; k++)
2656 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2661 /* apply AC prediction if needed */
2663 if(dc_pred_dir) { //left
2664 for(k = 1; k < 8; k++) {
2665 block[k << 3] = ac_val2[k] * scale;
2666 if(!v->pquantizer && block[k << 3])
2667 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
2670 for(k = 1; k < 8; k++) {
2671 block[k] = ac_val2[k + 8] * scale;
2672 if(!v->pquantizer && block[k])
2673 block[k] += (block[k] < 0) ? -mquant : mquant;
2679 s->block_last_index[n] = i;
2684 /** Decode intra block in inter frames - more generic version than vc1_decode_i_block
2685 * @param v VC1Context
2686 * @param block block to decode
2687 * @param coded are AC coeffs present or not
2688 * @param mquant block quantizer
2689 * @param codingset set of VLC to decode data
2691 static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset)
2693 GetBitContext *gb = &v->s.gb;
2694 MpegEncContext *s = &v->s;
2695 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2698 int16_t *ac_val, *ac_val2;
2700 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2701 int a_avail = v->a_avail, c_avail = v->c_avail;
2702 int use_pred = s->ac_pred;
2706 /* XXX: Guard against dumb values of mquant */
2707 mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
2709 /* Set DC scale - y and c use the same */
2710 s->y_dc_scale = s->y_dc_scale_table[mquant];
2711 s->c_dc_scale = s->c_dc_scale_table[mquant];
2713 /* Get DC differential */
2715 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2717 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2720 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2725 if (dcdiff == 119 /* ESC index value */)
2727 /* TODO: Optimize */
2728 if (mquant == 1) dcdiff = get_bits(gb, 10);
2729 else if (mquant == 2) dcdiff = get_bits(gb, 9);
2730 else dcdiff = get_bits(gb, 8);
2735 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2736 else if (mquant == 2)
2737 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2744 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
2747 /* Store the quantized DC coeff, used for prediction */
2750 block[0] = dcdiff * s->y_dc_scale;
2752 block[0] = dcdiff * s->c_dc_scale;
2761 /* check if AC is needed at all and adjust direction if needed */
2762 if(!a_avail) dc_pred_dir = 1;
2763 if(!c_avail) dc_pred_dir = 0;
2764 if(!a_avail && !c_avail) use_pred = 0;
2765 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2768 scale = mquant * 2 + v->halfpq;
2770 if(dc_pred_dir) //left
2773 ac_val -= 16 * s->block_wrap[n];
2775 q1 = s->current_picture.qscale_table[mb_pos];
2776 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
2777 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2778 if(dc_pred_dir && n==1) q2 = q1;
2779 if(!dc_pred_dir && n==2) q2 = q1;
2783 int last = 0, skip, value;
2784 const int8_t *zz_table;
2787 zz_table = ff_vc1_simple_progressive_8x8_zz;
2790 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2794 block[zz_table[i++]] = value;
2797 /* apply AC prediction if needed */
2799 /* scale predictors if needed*/
2801 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2802 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2804 if(dc_pred_dir) { //left
2805 for(k = 1; k < 8; k++)
2806 block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2808 for(k = 1; k < 8; k++)
2809 block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2812 if(dc_pred_dir) { //left
2813 for(k = 1; k < 8; k++)
2814 block[k << 3] += ac_val[k];
2816 for(k = 1; k < 8; k++)
2817 block[k] += ac_val[k + 8];
2821 /* save AC coeffs for further prediction */
2822 for(k = 1; k < 8; k++) {
2823 ac_val2[k] = block[k << 3];
2824 ac_val2[k + 8] = block[k];
2827 /* scale AC coeffs */
2828 for(k = 1; k < 64; k++)
2832 block[k] += (block[k] < 0) ? -mquant : mquant;
2835 if(use_pred) i = 63;
2836 } else { // no AC coeffs
2839 memset(ac_val2, 0, 16 * 2);
2840 if(dc_pred_dir) {//left
2842 memcpy(ac_val2, ac_val, 8 * 2);
2844 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2845 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2846 for(k = 1; k < 8; k++)
2847 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2852 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2854 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2855 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2856 for(k = 1; k < 8; k++)
2857 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2862 /* apply AC prediction if needed */
2864 if(dc_pred_dir) { //left
2865 for(k = 1; k < 8; k++) {
2866 block[k << 3] = ac_val2[k] * scale;
2867 if(!v->pquantizer && block[k << 3])
2868 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
2871 for(k = 1; k < 8; k++) {
2872 block[k] = ac_val2[k + 8] * scale;
2873 if(!v->pquantizer && block[k])
2874 block[k] += (block[k] < 0) ? -mquant : mquant;
2880 s->block_last_index[n] = i;
2887 static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block)
2889 MpegEncContext *s = &v->s;
2890 GetBitContext *gb = &s->gb;
2893 int scale, off, idx, last, skip, value;
2894 int ttblk = ttmb & 7;
2897 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)];
2899 if(ttblk == TT_4X4) {
2900 subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
2902 if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) {
2903 subblkpat = decode012(gb);
2904 if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits
2905 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4;
2906 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8;
2908 scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0);
2910 // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
2911 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
2912 subblkpat = 2 - (ttblk == TT_8X4_TOP);
2915 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
2916 subblkpat = 2 - (ttblk == TT_4X8_LEFT);
2924 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2928 idx = ff_vc1_simple_progressive_8x8_zz[i++];
2929 block[idx] = value * scale;
2931 block[idx] += (block[idx] < 0) ? -mquant : mquant;
2933 s->dsp.vc1_inv_trans_8x8(block);
2936 for(j = 0; j < 4; j++) {
2937 last = subblkpat & (1 << (3 - j));
2939 off = (j & 1) * 4 + (j & 2) * 16;
2941 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2945 idx = ff_vc1_simple_progressive_4x4_zz[i++];
2946 block[idx + off] = value * scale;
2948 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2950 if(!(subblkpat & (1 << (3 - j))))
2951 s->dsp.vc1_inv_trans_4x4(block, j);
2955 for(j = 0; j < 2; j++) {
2956 last = subblkpat & (1 << (1 - j));
2960 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2964 if(v->profile < PROFILE_ADVANCED)
2965 idx = ff_vc1_simple_progressive_8x4_zz[i++];
2967 idx = ff_vc1_adv_progressive_8x4_zz[i++];
2968 block[idx + off] = value * scale;
2970 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2972 if(!(subblkpat & (1 << (1 - j))))
2973 s->dsp.vc1_inv_trans_8x4(block, j);
2977 for(j = 0; j < 2; j++) {
2978 last = subblkpat & (1 << (1 - j));
2982 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2986 if(v->profile < PROFILE_ADVANCED)
2987 idx = ff_vc1_simple_progressive_4x8_zz[i++];
2989 idx = ff_vc1_adv_progressive_4x8_zz[i++];
2990 block[idx + off] = value * scale;
2992 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2994 if(!(subblkpat & (1 << (1 - j))))
2995 s->dsp.vc1_inv_trans_4x8(block, j);
3003 /** Decode one P-frame MB (in Simple/Main profile)
3005 static int vc1_decode_p_mb(VC1Context *v)
3007 MpegEncContext *s = &v->s;
3008 GetBitContext *gb = &s->gb;
3010 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3011 int cbp; /* cbp decoding stuff */
3012 int mqdiff, mquant; /* MB quantization */
3013 int ttmb = v->ttfrm; /* MB Transform type */
3016 static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
3017 offset_table[6] = { 0, 1, 3, 7, 15, 31 };
3018 int mb_has_coeffs = 1; /* last_flag */
3019 int dmv_x, dmv_y; /* Differential MV components */
3020 int index, index1; /* LUT indices */
3021 int val, sign; /* temp values */
3022 int first_block = 1;
3024 int skipped, fourmv;
3026 mquant = v->pq; /* Loosy initialization */
3028 if (v->mv_type_is_raw)
3029 fourmv = get_bits1(gb);
3031 fourmv = v->mv_type_mb_plane[mb_pos];
3033 skipped = get_bits1(gb);
3035 skipped = v->s.mbskip_table[mb_pos];
3037 s->dsp.clear_blocks(s->block[0]);
3039 if (!fourmv) /* 1MV mode */
3043 GET_MVDATA(dmv_x, dmv_y);
3046 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3047 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3049 s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
3050 vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]);
3052 /* FIXME Set DC val for inter block ? */
3053 if (s->mb_intra && !mb_has_coeffs)
3056 s->ac_pred = get_bits1(gb);
3059 else if (mb_has_coeffs)
3061 if (s->mb_intra) s->ac_pred = get_bits1(gb);
3062 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3070 s->current_picture.qscale_table[mb_pos] = mquant;
3072 if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
3073 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
3074 VC1_TTMB_VLC_BITS, 2);
3075 if(!s->mb_intra) vc1_mc_1mv(v, 0);
3079 s->dc_val[0][s->block_index[i]] = 0;
3081 val = ((cbp >> (5 - i)) & 1);
3082 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3083 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3085 /* check if prediction blocks A and C are available */
3086 v->a_avail = v->c_avail = 0;
3087 if(i == 2 || i == 3 || !s->first_slice_line)
3088 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3089 if(i == 1 || i == 3 || s->mb_x)
3090 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3092 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
3093 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3094 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3095 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3096 s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3097 if(v->pq >= 9 && v->overlap) {
3099 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3101 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3104 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3105 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3107 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3108 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3115 for(i = 0; i < 6; i++) {
3116 v->mb_type[0][s->block_index[i]] = 0;
3117 s->dc_val[0][s->block_index[i]] = 0;
3119 s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
3120 s->current_picture.qscale_table[mb_pos] = 0;
3121 vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
3128 if (!skipped /* unskipped MB */)
3130 int intra_count = 0, coded_inter = 0;
3131 int is_intra[6], is_coded[6];
3133 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3136 val = ((cbp >> (5 - i)) & 1);
3137 s->dc_val[0][s->block_index[i]] = 0;
3144 GET_MVDATA(dmv_x, dmv_y);
3146 vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
3147 if(!s->mb_intra) vc1_mc_4mv_luma(v, i);
3148 intra_count += s->mb_intra;
3149 is_intra[i] = s->mb_intra;
3150 is_coded[i] = mb_has_coeffs;
3153 is_intra[i] = (intra_count >= 3);
3156 if(i == 4) vc1_mc_4mv_chroma(v);
3157 v->mb_type[0][s->block_index[i]] = is_intra[i];
3158 if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i];
3160 // if there are no coded blocks then don't do anything more
3161 if(!intra_count && !coded_inter) return 0;
3164 s->current_picture.qscale_table[mb_pos] = mquant;
3165 /* test if block is intra and has pred */
3170 if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
3171 || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
3176 if(intrapred)s->ac_pred = get_bits1(gb);
3177 else s->ac_pred = 0;
3179 if (!v->ttmbf && coded_inter)
3180 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3184 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3185 s->mb_intra = is_intra[i];
3187 /* check if prediction blocks A and C are available */
3188 v->a_avail = v->c_avail = 0;
3189 if(i == 2 || i == 3 || !s->first_slice_line)
3190 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3191 if(i == 1 || i == 3 || s->mb_x)
3192 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3194 vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset);
3195 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3196 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3197 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3198 s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3199 if(v->pq >= 9 && v->overlap) {
3201 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3203 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3205 } else if(is_coded[i]) {
3206 status = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3207 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3209 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3210 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3218 s->current_picture.qscale_table[mb_pos] = 0;
3219 for (i=0; i<6; i++) {
3220 v->mb_type[0][s->block_index[i]] = 0;
3221 s->dc_val[0][s->block_index[i]] = 0;
3225 vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]);
3226 vc1_mc_4mv_luma(v, i);
3228 vc1_mc_4mv_chroma(v);
3229 s->current_picture.qscale_table[mb_pos] = 0;
3234 /* Should never happen */
3238 /** Decode one B-frame MB (in Main profile)
3240 static void vc1_decode_b_mb(VC1Context *v)
3242 MpegEncContext *s = &v->s;
3243 GetBitContext *gb = &s->gb;
3245 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3246 int cbp = 0; /* cbp decoding stuff */
3247 int mqdiff, mquant; /* MB quantization */
3248 int ttmb = v->ttfrm; /* MB Transform type */
3250 static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
3251 offset_table[6] = { 0, 1, 3, 7, 15, 31 };
3252 int mb_has_coeffs = 0; /* last_flag */
3253 int index, index1; /* LUT indices */
3254 int val, sign; /* temp values */
3255 int first_block = 1;
3257 int skipped, direct;
3258 int dmv_x[2], dmv_y[2];
3259 int bmvtype = BMV_TYPE_BACKWARD;
3261 mquant = v->pq; /* Loosy initialization */
3265 direct = get_bits1(gb);
3267 direct = v->direct_mb_plane[mb_pos];
3269 skipped = get_bits1(gb);
3271 skipped = v->s.mbskip_table[mb_pos];
3273 s->dsp.clear_blocks(s->block[0]);
3274 dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
3275 for(i = 0; i < 6; i++) {
3276 v->mb_type[0][s->block_index[i]] = 0;
3277 s->dc_val[0][s->block_index[i]] = 0;
3279 s->current_picture.qscale_table[mb_pos] = 0;
3283 GET_MVDATA(dmv_x[0], dmv_y[0]);
3284 dmv_x[1] = dmv_x[0];
3285 dmv_y[1] = dmv_y[0];
3287 if(skipped || !s->mb_intra) {
3288 bmvtype = decode012(gb);
3291 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
3294 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
3297 bmvtype = BMV_TYPE_INTERPOLATED;
3298 dmv_x[0] = dmv_y[0] = 0;
3302 for(i = 0; i < 6; i++)
3303 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3306 if(direct) bmvtype = BMV_TYPE_INTERPOLATED;
3307 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3308 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3312 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3316 s->current_picture.qscale_table[mb_pos] = mquant;
3318 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3319 dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
3320 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3321 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3323 if(!mb_has_coeffs && !s->mb_intra) {
3324 /* no coded blocks - effectively skipped */
3325 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3326 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3329 if(s->mb_intra && !mb_has_coeffs) {
3331 s->current_picture.qscale_table[mb_pos] = mquant;
3332 s->ac_pred = get_bits1(gb);
3334 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3336 if(bmvtype == BMV_TYPE_INTERPOLATED) {
3337 GET_MVDATA(dmv_x[0], dmv_y[0]);
3338 if(!mb_has_coeffs) {
3339 /* interpolated skipped block */
3340 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3341 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3345 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3347 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3350 s->ac_pred = get_bits1(gb);
3351 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3353 s->current_picture.qscale_table[mb_pos] = mquant;
3354 if(!v->ttmbf && !s->mb_intra && mb_has_coeffs)
3355 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3361 s->dc_val[0][s->block_index[i]] = 0;
3363 val = ((cbp >> (5 - i)) & 1);
3364 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3365 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3367 /* check if prediction blocks A and C are available */
3368 v->a_avail = v->c_avail = 0;
3369 if(i == 2 || i == 3 || !s->first_slice_line)
3370 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3371 if(i == 1 || i == 3 || s->mb_x)
3372 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3374 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
3375 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3376 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3377 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3378 s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3380 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3381 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3383 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3384 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3389 /** Decode blocks of I-frame
3391 static void vc1_decode_i_blocks(VC1Context *v)
3394 MpegEncContext *s = &v->s;
3399 /* select codingmode used for VLC tables selection */
3400 switch(v->y_ac_table_index){
3402 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3405 v->codingset = CS_HIGH_MOT_INTRA;
3408 v->codingset = CS_MID_RATE_INTRA;
3412 switch(v->c_ac_table_index){
3414 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3417 v->codingset2 = CS_HIGH_MOT_INTER;
3420 v->codingset2 = CS_MID_RATE_INTER;
3424 /* Set DC scale - y and c use the same */
3425 s->y_dc_scale = s->y_dc_scale_table[v->pq];
3426 s->c_dc_scale = s->c_dc_scale_table[v->pq];
3429 s->mb_x = s->mb_y = 0;
3431 s->first_slice_line = 1;
3432 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3433 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3434 ff_init_block_index(s);
3435 ff_update_block_index(s);
3436 s->dsp.clear_blocks(s->block[0]);
3437 mb_pos = s->mb_x + s->mb_y * s->mb_width;
3438 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
3439 s->current_picture.qscale_table[mb_pos] = v->pq;
3440 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3441 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3443 // do actual MB decoding and displaying
3444 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
3445 v->s.ac_pred = get_bits1(&v->s.gb);
3447 for(k = 0; k < 6; k++) {
3448 val = ((cbp >> (5 - k)) & 1);
3451 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
3455 cbp |= val << (5 - k);
3457 vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
3459 s->dsp.vc1_inv_trans_8x8(s->block[k]);
3460 if(v->pq >= 9 && v->overlap) {
3461 for(j = 0; j < 64; j++) s->block[k][j] += 128;
3465 vc1_put_block(v, s->block);
3466 if(v->pq >= 9 && v->overlap) {
3468 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
3469 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3470 if(!(s->flags & CODEC_FLAG_GRAY)) {
3471 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
3472 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
3475 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
3476 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3477 if(!s->first_slice_line) {
3478 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
3479 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
3480 if(!(s->flags & CODEC_FLAG_GRAY)) {
3481 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
3482 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
3485 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3486 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3489 if(get_bits_count(&s->gb) > v->bits) {
3490 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3491 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
3495 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3496 s->first_slice_line = 0;
3498 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3501 /** Decode blocks of I-frame for advanced profile
3503 static void vc1_decode_i_blocks_adv(VC1Context *v)
3506 MpegEncContext *s = &v->s;
3513 GetBitContext *gb = &s->gb;
3515 /* select codingmode used for VLC tables selection */
3516 switch(v->y_ac_table_index){
3518 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3521 v->codingset = CS_HIGH_MOT_INTRA;
3524 v->codingset = CS_MID_RATE_INTRA;
3528 switch(v->c_ac_table_index){
3530 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3533 v->codingset2 = CS_HIGH_MOT_INTER;
3536 v->codingset2 = CS_MID_RATE_INTER;
3541 s->mb_x = s->mb_y = 0;
3543 s->first_slice_line = 1;
3544 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3545 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3546 ff_init_block_index(s);
3547 ff_update_block_index(s);
3548 s->dsp.clear_blocks(s->block[0]);
3549 mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3550 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
3551 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3552 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3554 // do actual MB decoding and displaying
3555 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
3556 if(v->acpred_is_raw)
3557 v->s.ac_pred = get_bits1(&v->s.gb);
3559 v->s.ac_pred = v->acpred_plane[mb_pos];
3561 if(v->condover == CONDOVER_SELECT) {
3562 if(v->overflg_is_raw)
3563 overlap = get_bits1(&v->s.gb);
3565 overlap = v->over_flags_plane[mb_pos];
3567 overlap = (v->condover == CONDOVER_ALL);
3571 s->current_picture.qscale_table[mb_pos] = mquant;
3572 /* Set DC scale - y and c use the same */
3573 s->y_dc_scale = s->y_dc_scale_table[mquant];
3574 s->c_dc_scale = s->c_dc_scale_table[mquant];
3576 for(k = 0; k < 6; k++) {
3577 val = ((cbp >> (5 - k)) & 1);
3580 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
3584 cbp |= val << (5 - k);
3586 v->a_avail = !s->first_slice_line || (k==2 || k==3);
3587 v->c_avail = !!s->mb_x || (k==1 || k==3);
3589 vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant);
3591 s->dsp.vc1_inv_trans_8x8(s->block[k]);
3592 for(j = 0; j < 64; j++) s->block[k][j] += 128;
3595 vc1_put_block(v, s->block);
3598 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
3599 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3600 if(!(s->flags & CODEC_FLAG_GRAY)) {
3601 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
3602 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
3605 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
3606 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3607 if(!s->first_slice_line) {
3608 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
3609 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
3610 if(!(s->flags & CODEC_FLAG_GRAY)) {
3611 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
3612 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
3615 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3616 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3619 if(get_bits_count(&s->gb) > v->bits) {
3620 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3621 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
3625 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3626 s->first_slice_line = 0;
3628 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3631 static void vc1_decode_p_blocks(VC1Context *v)
3633 MpegEncContext *s = &v->s;
3635 /* select codingmode used for VLC tables selection */
3636 switch(v->c_ac_table_index){
3638 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3641 v->codingset = CS_HIGH_MOT_INTRA;
3644 v->codingset = CS_MID_RATE_INTRA;
3648 switch(v->c_ac_table_index){
3650 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3653 v->codingset2 = CS_HIGH_MOT_INTER;
3656 v->codingset2 = CS_MID_RATE_INTER;
3660 s->first_slice_line = 1;
3661 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3662 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3663 ff_init_block_index(s);
3664 ff_update_block_index(s);
3665 s->dsp.clear_blocks(s->block[0]);
3668 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
3669 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3670 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);
3674 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3675 s->first_slice_line = 0;
3677 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3680 static void vc1_decode_b_blocks(VC1Context *v)
3682 MpegEncContext *s = &v->s;
3684 /* select codingmode used for VLC tables selection */
3685 switch(v->c_ac_table_index){
3687 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3690 v->codingset = CS_HIGH_MOT_INTRA;
3693 v->codingset = CS_MID_RATE_INTRA;
3697 switch(v->c_ac_table_index){
3699 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3702 v->codingset2 = CS_HIGH_MOT_INTER;
3705 v->codingset2 = CS_MID_RATE_INTER;
3709 s->first_slice_line = 1;
3710 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3711 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3712 ff_init_block_index(s);
3713 ff_update_block_index(s);
3714 s->dsp.clear_blocks(s->block[0]);
3717 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
3718 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3719 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);
3723 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3724 s->first_slice_line = 0;
3726 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3729 static void vc1_decode_skip_blocks(VC1Context *v)
3731 MpegEncContext *s = &v->s;
3733 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3734 s->first_slice_line = 1;
3735 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3737 ff_init_block_index(s);
3738 ff_update_block_index(s);
3739 memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
3740 memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
3741 memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
3742 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3743 s->first_slice_line = 0;
3745 s->pict_type = P_TYPE;
3748 static void vc1_decode_blocks(VC1Context *v)
3751 v->s.esc3_level_length = 0;
3753 ff_intrax8_decode_picture(&v->x8, 2*v->pq+v->halfpq, v->pq*(!v->pquantizer) );
3756 switch(v->s.pict_type) {
3758 if(v->profile == PROFILE_ADVANCED)
3759 vc1_decode_i_blocks_adv(v);
3761 vc1_decode_i_blocks(v);
3764 if(v->p_frame_skipped)
3765 vc1_decode_skip_blocks(v);
3767 vc1_decode_p_blocks(v);
3771 if(v->profile == PROFILE_ADVANCED)
3772 vc1_decode_i_blocks_adv(v);
3774 vc1_decode_i_blocks(v);
3776 vc1_decode_b_blocks(v);
3782 /** Find VC-1 marker in buffer
3783 * @return position where next marker starts or end of buffer if no marker found
3785 static av_always_inline uint8_t* find_next_marker(uint8_t *src, uint8_t *end)
3787 uint32_t mrk = 0xFFFFFFFF;
3789 if(end-src < 4) return end;
3791 mrk = (mrk << 8) | *src++;
3798 static av_always_inline int vc1_unescape_buffer(uint8_t *src, int size, uint8_t *dst)
3803 for(dsize = 0; dsize < size; dsize++) *dst++ = *src++;
3806 for(i = 0; i < size; i++, src++) {
3807 if(src[0] == 3 && i >= 2 && !src[-1] && !src[-2] && i < size-1 && src[1] < 4) {
3808 dst[dsize++] = src[1];
3812 dst[dsize++] = *src;
3817 /** Initialize a VC1/WMV3 decoder
3818 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3819 * @todo TODO: Decypher remaining bits in extra_data
3821 static int vc1_decode_init(AVCodecContext *avctx)
3823 VC1Context *v = avctx->priv_data;
3824 MpegEncContext *s = &v->s;
3827 if (!avctx->extradata_size || !avctx->extradata) return -1;
3828 if (!(avctx->flags & CODEC_FLAG_GRAY))
3829 avctx->pix_fmt = PIX_FMT_YUV420P;
3831 avctx->pix_fmt = PIX_FMT_GRAY8;
3833 avctx->flags |= CODEC_FLAG_EMU_EDGE;
3834 v->s.flags |= CODEC_FLAG_EMU_EDGE;
3836 if(avctx->idct_algo==FF_IDCT_AUTO){
3837 avctx->idct_algo=FF_IDCT_WMV2;
3840 if(ff_h263_decode_init(avctx) < 0)
3842 if (vc1_init_common(v) < 0) return -1;
3844 avctx->coded_width = avctx->width;
3845 avctx->coded_height = avctx->height;
3846 if (avctx->codec_id == CODEC_ID_WMV3)
3850 // looks like WMV3 has a sequence header stored in the extradata
3851 // advanced sequence header may be before the first frame
3852 // the last byte of the extradata is a version number, 1 for the
3853 // samples we can decode
3855 init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
3857 if (decode_sequence_header(avctx, &gb) < 0)
3860 count = avctx->extradata_size*8 - get_bits_count(&gb);
3863 av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
3864 count, get_bits(&gb, count));
3868 av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
3870 } else { // VC1/WVC1
3871 uint8_t *start = avctx->extradata, *end = avctx->extradata + avctx->extradata_size;
3872 uint8_t *next; int size, buf2_size;
3873 uint8_t *buf2 = NULL;
3874 int seq_inited = 0, ep_inited = 0;
3876 if(avctx->extradata_size < 16) {
3877 av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
3881 buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
3882 if(start[0]) start++; // in WVC1 extradata first byte is its size
3884 for(; next < end; start = next){
3885 next = find_next_marker(start + 4, end);
3886 size = next - start - 4;
3887 if(size <= 0) continue;
3888 buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
3889 init_get_bits(&gb, buf2, buf2_size * 8);
3890 switch(AV_RB32(start)){
3891 case VC1_CODE_SEQHDR:
3892 if(decode_sequence_header(avctx, &gb) < 0){
3898 case VC1_CODE_ENTRYPOINT:
3899 if(decode_entry_point(avctx, &gb) < 0){
3908 if(!seq_inited || !ep_inited){
3909 av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
3913 avctx->has_b_frames= !!(avctx->max_b_frames);
3914 s->low_delay = !avctx->has_b_frames;
3916 s->mb_width = (avctx->coded_width+15)>>4;
3917 s->mb_height = (avctx->coded_height+15)>>4;
3919 /* Allocate mb bitplanes */
3920 v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3921 v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3922 v->acpred_plane = av_malloc(s->mb_stride * s->mb_height);
3923 v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height);
3925 /* allocate block type info in that way so it could be used with s->block_index[] */
3926 v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
3927 v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
3928 v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1;
3929 v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1);
3931 /* Init coded blocks info */
3932 if (v->profile == PROFILE_ADVANCED)
3934 // if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
3936 // if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
3940 ff_intrax8_common_init(&v->x8,s);
3945 /** Decode a VC1/WMV3 frame
3946 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3948 static int vc1_decode_frame(AVCodecContext *avctx,
3949 void *data, int *data_size,
3950 uint8_t *buf, int buf_size)
3952 VC1Context *v = avctx->priv_data;
3953 MpegEncContext *s = &v->s;
3954 AVFrame *pict = data;
3955 uint8_t *buf2 = NULL;
3957 /* no supplementary picture */
3958 if (buf_size == 0) {
3959 /* special case for last picture */
3960 if (s->low_delay==0 && s->next_picture_ptr) {
3961 *pict= *(AVFrame*)s->next_picture_ptr;
3962 s->next_picture_ptr= NULL;
3964 *data_size = sizeof(AVFrame);
3970 /* We need to set current_picture_ptr before reading the header,
3971 * otherwise we cannot store anything in there. */
3972 if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
3973 int i= ff_find_unused_picture(s, 0);
3974 s->current_picture_ptr= &s->picture[i];
3977 //for advanced profile we may need to parse and unescape data
3978 if (avctx->codec_id == CODEC_ID_VC1) {
3980 buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
3982 if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
3983 uint8_t *start, *end, *next;
3987 for(start = buf, end = buf + buf_size; next < end; start = next){
3988 next = find_next_marker(start + 4, end);
3989 size = next - start - 4;
3990 if(size <= 0) continue;
3991 switch(AV_RB32(start)){
3992 case VC1_CODE_FRAME:
3993 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
3995 case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
3996 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
3997 init_get_bits(&s->gb, buf2, buf_size2*8);
3998 decode_entry_point(avctx, &s->gb);
4000 case VC1_CODE_SLICE:
4001 av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n");
4006 }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
4009 divider = find_next_marker(buf, buf + buf_size);
4010 if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
4011 av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
4015 buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
4017 av_free(buf2);return -1;
4019 buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
4021 init_get_bits(&s->gb, buf2, buf_size2*8);
4023 init_get_bits(&s->gb, buf, buf_size*8);
4024 // do parse frame header
4025 if(v->profile < PROFILE_ADVANCED) {
4026 if(vc1_parse_frame_header(v, &s->gb) == -1) {
4031 if(vc1_parse_frame_header_adv(v, &s->gb) == -1) {
4037 if(s->pict_type != I_TYPE && !v->res_rtm_flag){
4043 s->current_picture.pict_type= s->pict_type;
4044 s->current_picture.key_frame= s->pict_type == I_TYPE;
4046 /* skip B-frames if we don't have reference frames */
4047 if(s->last_picture_ptr==NULL && (s->pict_type==B_TYPE || s->dropable)){
4049 return -1;//buf_size;
4051 /* skip b frames if we are in a hurry */
4052 if(avctx->hurry_up && s->pict_type==B_TYPE) return -1;//buf_size;
4053 if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==B_TYPE)
4054 || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=I_TYPE)
4055 || avctx->skip_frame >= AVDISCARD_ALL) {
4059 /* skip everything if we are in a hurry>=5 */
4060 if(avctx->hurry_up>=5) {
4062 return -1;//buf_size;
4065 if(s->next_p_frame_damaged){
4066 if(s->pict_type==B_TYPE)
4069 s->next_p_frame_damaged=0;
4072 if(MPV_frame_start(s, avctx) < 0) {
4077 s->me.qpel_put= s->dsp.put_qpel_pixels_tab;
4078 s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
4080 ff_er_frame_start(s);
4082 v->bits = buf_size * 8;
4083 vc1_decode_blocks(v);
4084 //av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8);
4085 // if(get_bits_count(&s->gb) > buf_size * 8)
4091 assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
4092 assert(s->current_picture.pict_type == s->pict_type);
4093 if (s->pict_type == B_TYPE || s->low_delay) {
4094 *pict= *(AVFrame*)s->current_picture_ptr;
4095 } else if (s->last_picture_ptr != NULL) {
4096 *pict= *(AVFrame*)s->last_picture_ptr;
4099 if(s->last_picture_ptr || s->low_delay){
4100 *data_size = sizeof(AVFrame);
4101 ff_print_debug_info(s, pict);
4104 /* Return the Picture timestamp as the frame number */
4105 /* we substract 1 because it is added on utils.c */
4106 avctx->frame_number = s->picture_number - 1;
4113 /** Close a VC1/WMV3 decoder
4114 * @warning Initial try at using MpegEncContext stuff
4116 static int vc1_decode_end(AVCodecContext *avctx)
4118 VC1Context *v = avctx->priv_data;
4120 av_freep(&v->hrd_rate);
4121 av_freep(&v->hrd_buffer);
4122 MPV_common_end(&v->s);
4123 av_freep(&v->mv_type_mb_plane);
4124 av_freep(&v->direct_mb_plane);
4125 av_freep(&v->acpred_plane);
4126 av_freep(&v->over_flags_plane);
4127 av_freep(&v->mb_type_base);
4132 AVCodec vc1_decoder = {
4145 AVCodec wmv3_decoder = {