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
814 av_log(avctx, AV_LOG_ERROR,
815 "1 for reserved RES_X8 is forbidden\n");
818 v->multires = get_bits1(gb);
819 v->res_fasttx = get_bits1(gb);
822 v->s.dsp.vc1_inv_trans_8x8 = simple_idct;
825 v->fastuvmc = get_bits1(gb); //common
826 if (!v->profile && !v->fastuvmc)
828 av_log(avctx, AV_LOG_ERROR,
829 "FASTUVMC unavailable in Simple Profile\n");
832 v->extended_mv = get_bits1(gb); //common
833 if (!v->profile && v->extended_mv)
835 av_log(avctx, AV_LOG_ERROR,
836 "Extended MVs unavailable in Simple Profile\n");
839 v->dquant = get_bits(gb, 2); //common
840 v->vstransform = get_bits1(gb); //common
842 v->res_transtab = get_bits1(gb);
845 av_log(avctx, AV_LOG_ERROR,
846 "1 for reserved RES_TRANSTAB is forbidden\n");
850 v->overlap = get_bits1(gb); //common
852 v->s.resync_marker = get_bits1(gb);
853 v->rangered = get_bits1(gb);
854 if (v->rangered && v->profile == PROFILE_SIMPLE)
856 av_log(avctx, AV_LOG_INFO,
857 "RANGERED should be set to 0 in simple profile\n");
860 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
861 v->quantizer_mode = get_bits(gb, 2); //common
863 v->finterpflag = get_bits1(gb); //common
864 v->res_rtm_flag = get_bits1(gb); //reserved
865 if (!v->res_rtm_flag)
867 // av_log(avctx, AV_LOG_ERROR,
868 // "0 for reserved RES_RTM_FLAG is forbidden\n");
869 av_log(avctx, AV_LOG_ERROR,
870 "Old WMV3 version detected, only I-frames will be decoded\n");
873 //TODO: figure out what they mean (always 0x402F)
874 if(!v->res_fasttx) skip_bits(gb, 16);
875 av_log(avctx, AV_LOG_DEBUG,
876 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
877 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
878 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
879 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
880 v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
881 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
882 v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
883 v->dquant, v->quantizer_mode, avctx->max_b_frames
888 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
891 v->level = get_bits(gb, 3);
894 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
896 v->chromaformat = get_bits(gb, 2);
897 if (v->chromaformat != 1)
899 av_log(v->s.avctx, AV_LOG_ERROR,
900 "Only 4:2:0 chroma format supported\n");
905 v->frmrtq_postproc = get_bits(gb, 3); //common
906 // (bitrate-32kbps)/64kbps
907 v->bitrtq_postproc = get_bits(gb, 5); //common
908 v->postprocflag = get_bits1(gb); //common
910 v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
911 v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
912 v->s.avctx->width = v->s.avctx->coded_width;
913 v->s.avctx->height = v->s.avctx->coded_height;
914 v->broadcast = get_bits1(gb);
915 v->interlace = get_bits1(gb);
916 v->tfcntrflag = get_bits1(gb);
917 v->finterpflag = get_bits1(gb);
918 skip_bits1(gb); // reserved
920 v->s.h_edge_pos = v->s.avctx->coded_width;
921 v->s.v_edge_pos = v->s.avctx->coded_height;
923 av_log(v->s.avctx, AV_LOG_DEBUG,
924 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
925 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
926 "TFCTRflag=%i, FINTERPflag=%i\n",
927 v->level, v->frmrtq_postproc, v->bitrtq_postproc,
928 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
929 v->tfcntrflag, v->finterpflag
932 v->psf = get_bits1(gb);
933 if(v->psf) { //PsF, 6.1.13
934 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
937 v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
938 if(get_bits1(gb)) { //Display Info - decoding is not affected by it
940 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
941 v->s.avctx->width = v->s.width = w = get_bits(gb, 14) + 1;
942 v->s.avctx->height = v->s.height = h = get_bits(gb, 14) + 1;
943 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
945 ar = get_bits(gb, 4);
947 v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
951 v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
954 if(get_bits1(gb)){ //framerate stuff
956 v->s.avctx->time_base.num = 32;
957 v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
960 nr = get_bits(gb, 8);
961 dr = get_bits(gb, 4);
962 if(nr && nr < 8 && dr && dr < 3){
963 v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
964 v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
970 v->color_prim = get_bits(gb, 8);
971 v->transfer_char = get_bits(gb, 8);
972 v->matrix_coef = get_bits(gb, 8);
976 v->hrd_param_flag = get_bits1(gb);
977 if(v->hrd_param_flag) {
979 v->hrd_num_leaky_buckets = get_bits(gb, 5);
980 skip_bits(gb, 4); //bitrate exponent
981 skip_bits(gb, 4); //buffer size exponent
982 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
983 skip_bits(gb, 16); //hrd_rate[n]
984 skip_bits(gb, 16); //hrd_buffer[n]
990 static int decode_entry_point(AVCodecContext *avctx, GetBitContext *gb)
992 VC1Context *v = avctx->priv_data;
993 int i, blink, clentry, refdist;
995 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
996 blink = get_bits1(gb); // broken link
997 clentry = get_bits1(gb); // closed entry
998 v->panscanflag = get_bits1(gb);
999 refdist = get_bits1(gb); // refdist flag
1000 v->s.loop_filter = get_bits1(gb);
1001 v->fastuvmc = get_bits1(gb);
1002 v->extended_mv = get_bits1(gb);
1003 v->dquant = get_bits(gb, 2);
1004 v->vstransform = get_bits1(gb);
1005 v->overlap = get_bits1(gb);
1006 v->quantizer_mode = get_bits(gb, 2);
1008 if(v->hrd_param_flag){
1009 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
1010 skip_bits(gb, 8); //hrd_full[n]
1015 avctx->coded_width = (get_bits(gb, 12)+1)<<1;
1016 avctx->coded_height = (get_bits(gb, 12)+1)<<1;
1019 v->extended_dmv = get_bits1(gb);
1021 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
1022 skip_bits(gb, 3); // Y range, ignored for now
1025 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
1026 skip_bits(gb, 3); // UV range, ignored for now
1029 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
1030 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
1031 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
1032 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
1033 blink, clentry, v->panscanflag, refdist, v->s.loop_filter,
1034 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
1039 static int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
1041 int pqindex, lowquant, status;
1043 if(v->finterpflag) v->interpfrm = get_bits1(gb);
1044 skip_bits(gb, 2); //framecnt unused
1046 if (v->rangered) v->rangeredfrm = get_bits1(gb);
1047 v->s.pict_type = get_bits1(gb);
1048 if (v->s.avctx->max_b_frames) {
1049 if (!v->s.pict_type) {
1050 if (get_bits1(gb)) v->s.pict_type = I_TYPE;
1051 else v->s.pict_type = B_TYPE;
1052 } else v->s.pict_type = P_TYPE;
1053 } else v->s.pict_type = v->s.pict_type ? P_TYPE : I_TYPE;
1056 if(v->s.pict_type == B_TYPE) {
1057 v->bfraction = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1058 v->bfraction = ff_vc1_bfraction_lut[v->bfraction];
1059 if(v->bfraction == 0) {
1060 v->s.pict_type = BI_TYPE;
1063 if(v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1064 skip_bits(gb, 7); // skip buffer fullness
1067 if(v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1069 if(v->s.pict_type == P_TYPE)
1072 /* Quantizer stuff */
1073 pqindex = get_bits(gb, 5);
1074 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1075 v->pq = ff_vc1_pquant_table[0][pqindex];
1077 v->pq = ff_vc1_pquant_table[1][pqindex];
1080 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1081 v->pquantizer = pqindex < 9;
1082 if (v->quantizer_mode == QUANT_NON_UNIFORM)
1084 v->pqindex = pqindex;
1085 if (pqindex < 9) v->halfpq = get_bits1(gb);
1087 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
1088 v->pquantizer = get_bits1(gb);
1090 if (v->extended_mv == 1) v->mvrange = get_unary(gb, 0, 3);
1091 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1092 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1093 v->range_x = 1 << (v->k_x - 1);
1094 v->range_y = 1 << (v->k_y - 1);
1095 if (v->profile == PROFILE_ADVANCED)
1097 if (v->postprocflag) v->postproc = get_bits1(gb);
1100 if (v->multires && v->s.pict_type != B_TYPE) v->respic = get_bits(gb, 2);
1102 if(v->res_x8 && (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)){
1103 v->x8_type = get_bits1(gb);
1104 }else v->x8_type = 0;
1105 //av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
1106 // (v->s.pict_type == P_TYPE) ? 'P' : ((v->s.pict_type == I_TYPE) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
1108 if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
1110 switch(v->s.pict_type) {
1112 if (v->pq < 5) v->tt_index = 0;
1113 else if(v->pq < 13) v->tt_index = 1;
1114 else v->tt_index = 2;
1116 lowquant = (v->pq > 12) ? 0 : 1;
1117 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
1118 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
1120 int scale, shift, i;
1121 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
1122 v->lumscale = get_bits(gb, 6);
1123 v->lumshift = get_bits(gb, 6);
1125 /* fill lookup tables for intensity compensation */
1128 shift = (255 - v->lumshift * 2) << 6;
1129 if(v->lumshift > 31)
1132 scale = v->lumscale + 32;
1133 if(v->lumshift > 31)
1134 shift = (v->lumshift - 64) << 6;
1136 shift = v->lumshift << 6;
1138 for(i = 0; i < 256; i++) {
1139 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
1140 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
1143 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1144 v->s.quarter_sample = 0;
1145 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1146 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1147 v->s.quarter_sample = 0;
1149 v->s.quarter_sample = 1;
1151 v->s.quarter_sample = 1;
1152 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));
1154 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1155 v->mv_mode2 == MV_PMODE_MIXED_MV)
1156 || v->mv_mode == MV_PMODE_MIXED_MV)
1158 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1159 if (status < 0) return -1;
1160 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1161 "Imode: %i, Invert: %i\n", status>>1, status&1);
1163 v->mv_type_is_raw = 0;
1164 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1166 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1167 if (status < 0) return -1;
1168 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1169 "Imode: %i, Invert: %i\n", status>>1, status&1);
1171 /* Hopefully this is correct for P frames */
1172 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1173 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1177 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1178 vop_dquant_decoding(v);
1181 v->ttfrm = 0; //FIXME Is that so ?
1184 v->ttmbf = get_bits1(gb);
1187 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1195 if (v->pq < 5) v->tt_index = 0;
1196 else if(v->pq < 13) v->tt_index = 1;
1197 else v->tt_index = 2;
1199 lowquant = (v->pq > 12) ? 0 : 1;
1200 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1201 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1202 v->s.mspel = v->s.quarter_sample;
1204 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1205 if (status < 0) return -1;
1206 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1207 "Imode: %i, Invert: %i\n", status>>1, status&1);
1208 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1209 if (status < 0) return -1;
1210 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1211 "Imode: %i, Invert: %i\n", status>>1, status&1);
1213 v->s.mv_table_index = get_bits(gb, 2);
1214 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1218 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1219 vop_dquant_decoding(v);
1225 v->ttmbf = get_bits1(gb);
1228 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1240 v->c_ac_table_index = decode012(gb);
1241 if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1243 v->y_ac_table_index = decode012(gb);
1246 v->s.dc_table_index = get_bits1(gb);
1249 if(v->s.pict_type == BI_TYPE) {
1250 v->s.pict_type = B_TYPE;
1256 static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
1258 int pqindex, lowquant;
1261 v->p_frame_skipped = 0;
1264 v->fcm = decode012(gb);
1265 if(v->fcm) return -1; // interlaced frames/fields are not implemented
1267 switch(get_unary(gb, 0, 4)) {
1269 v->s.pict_type = P_TYPE;
1272 v->s.pict_type = B_TYPE;
1275 v->s.pict_type = I_TYPE;
1278 v->s.pict_type = BI_TYPE;
1281 v->s.pict_type = P_TYPE; // skipped pic
1282 v->p_frame_skipped = 1;
1288 if(!v->interlace || v->psf) {
1289 v->rptfrm = get_bits(gb, 2);
1291 v->tff = get_bits1(gb);
1292 v->rptfrm = get_bits1(gb);
1295 if(v->panscanflag) {
1298 v->rnd = get_bits1(gb);
1300 v->uvsamp = get_bits1(gb);
1301 if(v->finterpflag) v->interpfrm = get_bits1(gb);
1302 if(v->s.pict_type == B_TYPE) {
1303 v->bfraction = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1304 v->bfraction = ff_vc1_bfraction_lut[v->bfraction];
1305 if(v->bfraction == 0) {
1306 v->s.pict_type = BI_TYPE; /* XXX: should not happen here */
1309 pqindex = get_bits(gb, 5);
1310 v->pqindex = pqindex;
1311 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1312 v->pq = ff_vc1_pquant_table[0][pqindex];
1314 v->pq = ff_vc1_pquant_table[1][pqindex];
1317 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
1318 v->pquantizer = pqindex < 9;
1319 if (v->quantizer_mode == QUANT_NON_UNIFORM)
1321 v->pqindex = pqindex;
1322 if (pqindex < 9) v->halfpq = get_bits1(gb);
1324 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
1325 v->pquantizer = get_bits1(gb);
1327 if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
1329 switch(v->s.pict_type) {
1332 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
1333 if (status < 0) return -1;
1334 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
1335 "Imode: %i, Invert: %i\n", status>>1, status&1);
1336 v->condover = CONDOVER_NONE;
1337 if(v->overlap && v->pq <= 8) {
1338 v->condover = decode012(gb);
1339 if(v->condover == CONDOVER_SELECT) {
1340 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
1341 if (status < 0) return -1;
1342 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
1343 "Imode: %i, Invert: %i\n", status>>1, status&1);
1349 v->postproc = get_bits1(gb);
1350 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
1351 else v->mvrange = 0;
1352 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1353 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1354 v->range_x = 1 << (v->k_x - 1);
1355 v->range_y = 1 << (v->k_y - 1);
1357 if (v->pq < 5) v->tt_index = 0;
1358 else if(v->pq < 13) v->tt_index = 1;
1359 else v->tt_index = 2;
1361 lowquant = (v->pq > 12) ? 0 : 1;
1362 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
1363 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
1365 int scale, shift, i;
1366 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
1367 v->lumscale = get_bits(gb, 6);
1368 v->lumshift = get_bits(gb, 6);
1369 /* fill lookup tables for intensity compensation */
1372 shift = (255 - v->lumshift * 2) << 6;
1373 if(v->lumshift > 31)
1376 scale = v->lumscale + 32;
1377 if(v->lumshift > 31)
1378 shift = (v->lumshift - 64) << 6;
1380 shift = v->lumshift << 6;
1382 for(i = 0; i < 256; i++) {
1383 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
1384 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
1388 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1389 v->s.quarter_sample = 0;
1390 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1391 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1392 v->s.quarter_sample = 0;
1394 v->s.quarter_sample = 1;
1396 v->s.quarter_sample = 1;
1397 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));
1399 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1400 v->mv_mode2 == MV_PMODE_MIXED_MV)
1401 || v->mv_mode == MV_PMODE_MIXED_MV)
1403 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1404 if (status < 0) return -1;
1405 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1406 "Imode: %i, Invert: %i\n", status>>1, status&1);
1408 v->mv_type_is_raw = 0;
1409 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1411 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1412 if (status < 0) return -1;
1413 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1414 "Imode: %i, Invert: %i\n", status>>1, status&1);
1416 /* Hopefully this is correct for P frames */
1417 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1418 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1421 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1422 vop_dquant_decoding(v);
1425 v->ttfrm = 0; //FIXME Is that so ?
1428 v->ttmbf = get_bits1(gb);
1431 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1440 v->postproc = get_bits1(gb);
1441 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
1442 else v->mvrange = 0;
1443 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1444 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1445 v->range_x = 1 << (v->k_x - 1);
1446 v->range_y = 1 << (v->k_y - 1);
1448 if (v->pq < 5) v->tt_index = 0;
1449 else if(v->pq < 13) v->tt_index = 1;
1450 else v->tt_index = 2;
1452 lowquant = (v->pq > 12) ? 0 : 1;
1453 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1454 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1455 v->s.mspel = v->s.quarter_sample;
1457 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1458 if (status < 0) return -1;
1459 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1460 "Imode: %i, Invert: %i\n", status>>1, status&1);
1461 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1462 if (status < 0) return -1;
1463 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1464 "Imode: %i, Invert: %i\n", status>>1, status&1);
1466 v->s.mv_table_index = get_bits(gb, 2);
1467 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1471 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1472 vop_dquant_decoding(v);
1478 v->ttmbf = get_bits1(gb);
1481 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1491 v->c_ac_table_index = decode012(gb);
1492 if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
1494 v->y_ac_table_index = decode012(gb);
1497 v->s.dc_table_index = get_bits1(gb);
1498 if ((v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE) && v->dquant) {
1499 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1500 vop_dquant_decoding(v);
1504 if(v->s.pict_type == BI_TYPE) {
1505 v->s.pict_type = B_TYPE;
1511 /***********************************************************************/
1513 * @defgroup block VC-1 Block-level functions
1514 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
1520 * @brief Get macroblock-level quantizer scale
1522 #define GET_MQUANT() \
1526 if (v->dqprofile == DQPROFILE_ALL_MBS) \
1530 mquant = (get_bits1(gb)) ? v->altpq : v->pq; \
1534 mqdiff = get_bits(gb, 3); \
1535 if (mqdiff != 7) mquant = v->pq + mqdiff; \
1536 else mquant = get_bits(gb, 5); \
1539 if(v->dqprofile == DQPROFILE_SINGLE_EDGE) \
1540 edges = 1 << v->dqsbedge; \
1541 else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
1542 edges = (3 << v->dqsbedge) % 15; \
1543 else if(v->dqprofile == DQPROFILE_FOUR_EDGES) \
1545 if((edges&1) && !s->mb_x) \
1546 mquant = v->altpq; \
1547 if((edges&2) && s->first_slice_line) \
1548 mquant = v->altpq; \
1549 if((edges&4) && s->mb_x == (s->mb_width - 1)) \
1550 mquant = v->altpq; \
1551 if((edges&8) && s->mb_y == (s->mb_height - 1)) \
1552 mquant = v->altpq; \
1556 * @def GET_MVDATA(_dmv_x, _dmv_y)
1557 * @brief Get MV differentials
1558 * @see MVDATA decoding from 8.3.5.2, p(1)20
1559 * @param _dmv_x Horizontal differential for decoded MV
1560 * @param _dmv_y Vertical differential for decoded MV
1562 #define GET_MVDATA(_dmv_x, _dmv_y) \
1563 index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table,\
1564 VC1_MV_DIFF_VLC_BITS, 2); \
1567 mb_has_coeffs = 1; \
1570 else mb_has_coeffs = 0; \
1572 if (!index) { _dmv_x = _dmv_y = 0; } \
1573 else if (index == 35) \
1575 _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
1576 _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
1578 else if (index == 36) \
1587 if (!s->quarter_sample && index1 == 5) val = 1; \
1589 if(size_table[index1] - val > 0) \
1590 val = get_bits(gb, size_table[index1] - val); \
1592 sign = 0 - (val&1); \
1593 _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
1596 if (!s->quarter_sample && index1 == 5) val = 1; \
1598 if(size_table[index1] - val > 0) \
1599 val = get_bits(gb, size_table[index1] - val); \
1601 sign = 0 - (val&1); \
1602 _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
1605 /** Predict and set motion vector
1607 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)
1609 int xy, wrap, off = 0;
1614 /* scale MV difference to be quad-pel */
1615 dmv_x <<= 1 - s->quarter_sample;
1616 dmv_y <<= 1 - s->quarter_sample;
1618 wrap = s->b8_stride;
1619 xy = s->block_index[n];
1622 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
1623 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
1624 s->current_picture.motion_val[1][xy][0] = 0;
1625 s->current_picture.motion_val[1][xy][1] = 0;
1626 if(mv1) { /* duplicate motion data for 1-MV block */
1627 s->current_picture.motion_val[0][xy + 1][0] = 0;
1628 s->current_picture.motion_val[0][xy + 1][1] = 0;
1629 s->current_picture.motion_val[0][xy + wrap][0] = 0;
1630 s->current_picture.motion_val[0][xy + wrap][1] = 0;
1631 s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
1632 s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
1633 s->current_picture.motion_val[1][xy + 1][0] = 0;
1634 s->current_picture.motion_val[1][xy + 1][1] = 0;
1635 s->current_picture.motion_val[1][xy + wrap][0] = 0;
1636 s->current_picture.motion_val[1][xy + wrap][1] = 0;
1637 s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
1638 s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
1643 C = s->current_picture.motion_val[0][xy - 1];
1644 A = s->current_picture.motion_val[0][xy - wrap];
1646 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
1648 //in 4-MV mode different blocks have different B predictor position
1651 off = (s->mb_x > 0) ? -1 : 1;
1654 off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
1663 B = s->current_picture.motion_val[0][xy - wrap + off];
1665 if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds
1666 if(s->mb_width == 1) {
1670 px = mid_pred(A[0], B[0], C[0]);
1671 py = mid_pred(A[1], B[1], C[1]);
1673 } else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds
1679 /* Pullback MV as specified in 8.3.5.3.4 */
1682 qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0);
1683 qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0);
1684 X = (s->mb_width << 6) - 4;
1685 Y = (s->mb_height << 6) - 4;
1687 if(qx + px < -60) px = -60 - qx;
1688 if(qy + py < -60) py = -60 - qy;
1690 if(qx + px < -28) px = -28 - qx;
1691 if(qy + py < -28) py = -28 - qy;
1693 if(qx + px > X) px = X - qx;
1694 if(qy + py > Y) py = Y - qy;
1696 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1697 if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) {
1698 if(is_intra[xy - wrap])
1699 sum = FFABS(px) + FFABS(py);
1701 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1703 if(get_bits1(&s->gb)) {
1711 if(is_intra[xy - 1])
1712 sum = FFABS(px) + FFABS(py);
1714 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1716 if(get_bits1(&s->gb)) {
1726 /* store MV using signed modulus of MV range defined in 4.11 */
1727 s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
1728 s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
1729 if(mv1) { /* duplicate motion data for 1-MV block */
1730 s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0];
1731 s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1];
1732 s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0];
1733 s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1];
1734 s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0];
1735 s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1];
1739 /** Motion compensation for direct or interpolated blocks in B-frames
1741 static void vc1_interp_mc(VC1Context *v)
1743 MpegEncContext *s = &v->s;
1744 DSPContext *dsp = &v->s.dsp;
1745 uint8_t *srcY, *srcU, *srcV;
1746 int dxy, uvdxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
1748 if(!v->s.next_picture.data[0])return;
1750 mx = s->mv[1][0][0];
1751 my = s->mv[1][0][1];
1752 uvmx = (mx + ((mx & 3) == 3)) >> 1;
1753 uvmy = (my + ((my & 3) == 3)) >> 1;
1755 uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
1756 uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
1758 srcY = s->next_picture.data[0];
1759 srcU = s->next_picture.data[1];
1760 srcV = s->next_picture.data[2];
1762 src_x = s->mb_x * 16 + (mx >> 2);
1763 src_y = s->mb_y * 16 + (my >> 2);
1764 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
1765 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
1767 if(v->profile != PROFILE_ADVANCED){
1768 src_x = av_clip( src_x, -16, s->mb_width * 16);
1769 src_y = av_clip( src_y, -16, s->mb_height * 16);
1770 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
1771 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
1773 src_x = av_clip( src_x, -17, s->avctx->coded_width);
1774 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
1775 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
1776 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
1779 srcY += src_y * s->linesize + src_x;
1780 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
1781 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
1783 /* for grayscale we should not try to read from unknown area */
1784 if(s->flags & CODEC_FLAG_GRAY) {
1785 srcU = s->edge_emu_buffer + 18 * s->linesize;
1786 srcV = s->edge_emu_buffer + 18 * s->linesize;
1790 || (unsigned)src_x > s->h_edge_pos - (mx&3) - 16
1791 || (unsigned)src_y > s->v_edge_pos - (my&3) - 16){
1792 uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
1794 srcY -= s->mspel * (1 + s->linesize);
1795 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
1796 src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
1797 srcY = s->edge_emu_buffer;
1798 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
1799 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
1800 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
1801 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
1804 /* if we deal with range reduction we need to scale source blocks */
1805 if(v->rangeredfrm) {
1807 uint8_t *src, *src2;
1810 for(j = 0; j < 17 + s->mspel*2; j++) {
1811 for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
1814 src = srcU; src2 = srcV;
1815 for(j = 0; j < 9; j++) {
1816 for(i = 0; i < 9; i++) {
1817 src[i] = ((src[i] - 128) >> 1) + 128;
1818 src2[i] = ((src2[i] - 128) >> 1) + 128;
1820 src += s->uvlinesize;
1821 src2 += s->uvlinesize;
1824 srcY += s->mspel * (1 + s->linesize);
1829 dxy = ((my & 1) << 1) | (mx & 1);
1831 dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
1833 if(s->flags & CODEC_FLAG_GRAY) return;
1834 /* Chroma MC always uses qpel blilinear */
1835 uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
1838 dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
1839 dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
1842 static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
1846 #if B_FRACTION_DEN==256
1850 return 2 * ((value * n + 255) >> 9);
1851 return (value * n + 128) >> 8;
1854 n -= B_FRACTION_DEN;
1856 return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
1857 return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
1861 /** Reconstruct motion vector for B-frame and do motion compensation
1863 static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
1866 v->mv_mode2 = v->mv_mode;
1867 v->mv_mode = MV_PMODE_INTENSITY_COMP;
1872 if(v->use_ic) v->mv_mode = v->mv_mode2;
1875 if(mode == BMV_TYPE_INTERPOLATED) {
1878 if(v->use_ic) v->mv_mode = v->mv_mode2;
1882 if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2;
1883 vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
1884 if(v->use_ic) v->mv_mode = v->mv_mode2;
1887 static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype)
1889 MpegEncContext *s = &v->s;
1890 int xy, wrap, off = 0;
1895 const uint8_t *is_intra = v->mb_type[0];
1899 /* scale MV difference to be quad-pel */
1900 dmv_x[0] <<= 1 - s->quarter_sample;
1901 dmv_y[0] <<= 1 - s->quarter_sample;
1902 dmv_x[1] <<= 1 - s->quarter_sample;
1903 dmv_y[1] <<= 1 - s->quarter_sample;
1905 wrap = s->b8_stride;
1906 xy = s->block_index[0];
1909 s->current_picture.motion_val[0][xy][0] =
1910 s->current_picture.motion_val[0][xy][1] =
1911 s->current_picture.motion_val[1][xy][0] =
1912 s->current_picture.motion_val[1][xy][1] = 0;
1915 s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
1916 s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
1917 s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
1918 s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
1920 /* Pullback predicted motion vectors as specified in 8.4.5.4 */
1921 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));
1922 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));
1923 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));
1924 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));
1926 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
1927 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
1928 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
1929 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
1933 if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
1934 C = s->current_picture.motion_val[0][xy - 2];
1935 A = s->current_picture.motion_val[0][xy - wrap*2];
1936 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
1937 B = s->current_picture.motion_val[0][xy - wrap*2 + off];
1939 if(!s->mb_x) C[0] = C[1] = 0;
1940 if(!s->first_slice_line) { // predictor A is not out of bounds
1941 if(s->mb_width == 1) {
1945 px = mid_pred(A[0], B[0], C[0]);
1946 py = mid_pred(A[1], B[1], C[1]);
1948 } else if(s->mb_x) { // predictor C is not out of bounds
1954 /* Pullback MV as specified in 8.3.5.3.4 */
1957 if(v->profile < PROFILE_ADVANCED) {
1958 qx = (s->mb_x << 5);
1959 qy = (s->mb_y << 5);
1960 X = (s->mb_width << 5) - 4;
1961 Y = (s->mb_height << 5) - 4;
1962 if(qx + px < -28) px = -28 - qx;
1963 if(qy + py < -28) py = -28 - qy;
1964 if(qx + px > X) px = X - qx;
1965 if(qy + py > Y) py = Y - qy;
1967 qx = (s->mb_x << 6);
1968 qy = (s->mb_y << 6);
1969 X = (s->mb_width << 6) - 4;
1970 Y = (s->mb_height << 6) - 4;
1971 if(qx + px < -60) px = -60 - qx;
1972 if(qy + py < -60) py = -60 - qy;
1973 if(qx + px > X) px = X - qx;
1974 if(qy + py > Y) py = Y - qy;
1977 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
1978 if(0 && !s->first_slice_line && s->mb_x) {
1979 if(is_intra[xy - wrap])
1980 sum = FFABS(px) + FFABS(py);
1982 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
1984 if(get_bits1(&s->gb)) {
1992 if(is_intra[xy - 2])
1993 sum = FFABS(px) + FFABS(py);
1995 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
1997 if(get_bits1(&s->gb)) {
2007 /* store MV using signed modulus of MV range defined in 4.11 */
2008 s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
2009 s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
2011 if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
2012 C = s->current_picture.motion_val[1][xy - 2];
2013 A = s->current_picture.motion_val[1][xy - wrap*2];
2014 off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
2015 B = s->current_picture.motion_val[1][xy - wrap*2 + off];
2017 if(!s->mb_x) C[0] = C[1] = 0;
2018 if(!s->first_slice_line) { // predictor A is not out of bounds
2019 if(s->mb_width == 1) {
2023 px = mid_pred(A[0], B[0], C[0]);
2024 py = mid_pred(A[1], B[1], C[1]);
2026 } else if(s->mb_x) { // predictor C is not out of bounds
2032 /* Pullback MV as specified in 8.3.5.3.4 */
2035 if(v->profile < PROFILE_ADVANCED) {
2036 qx = (s->mb_x << 5);
2037 qy = (s->mb_y << 5);
2038 X = (s->mb_width << 5) - 4;
2039 Y = (s->mb_height << 5) - 4;
2040 if(qx + px < -28) px = -28 - qx;
2041 if(qy + py < -28) py = -28 - qy;
2042 if(qx + px > X) px = X - qx;
2043 if(qy + py > Y) py = Y - qy;
2045 qx = (s->mb_x << 6);
2046 qy = (s->mb_y << 6);
2047 X = (s->mb_width << 6) - 4;
2048 Y = (s->mb_height << 6) - 4;
2049 if(qx + px < -60) px = -60 - qx;
2050 if(qy + py < -60) py = -60 - qy;
2051 if(qx + px > X) px = X - qx;
2052 if(qy + py > Y) py = Y - qy;
2055 /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
2056 if(0 && !s->first_slice_line && s->mb_x) {
2057 if(is_intra[xy - wrap])
2058 sum = FFABS(px) + FFABS(py);
2060 sum = FFABS(px - A[0]) + FFABS(py - A[1]);
2062 if(get_bits1(&s->gb)) {
2070 if(is_intra[xy - 2])
2071 sum = FFABS(px) + FFABS(py);
2073 sum = FFABS(px - C[0]) + FFABS(py - C[1]);
2075 if(get_bits1(&s->gb)) {
2085 /* store MV using signed modulus of MV range defined in 4.11 */
2087 s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
2088 s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
2090 s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
2091 s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
2092 s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
2093 s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
2096 /** Get predicted DC value for I-frames only
2097 * prediction dir: left=0, top=1
2098 * @param s MpegEncContext
2099 * @param[in] n block index in the current MB
2100 * @param dc_val_ptr Pointer to DC predictor
2101 * @param dir_ptr Prediction direction for use in AC prediction
2103 static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
2104 int16_t **dc_val_ptr, int *dir_ptr)
2106 int a, b, c, wrap, pred, scale;
2108 static const uint16_t dcpred[32] = {
2109 -1, 1024, 512, 341, 256, 205, 171, 146, 128,
2110 114, 102, 93, 85, 79, 73, 68, 64,
2111 60, 57, 54, 51, 49, 47, 45, 43,
2112 41, 39, 38, 37, 35, 34, 33
2115 /* find prediction - wmv3_dc_scale always used here in fact */
2116 if (n < 4) scale = s->y_dc_scale;
2117 else scale = s->c_dc_scale;
2119 wrap = s->block_wrap[n];
2120 dc_val= s->dc_val[0] + s->block_index[n];
2126 b = dc_val[ - 1 - wrap];
2127 a = dc_val[ - wrap];
2129 if (pq < 9 || !overlap)
2131 /* Set outer values */
2132 if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
2133 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
2137 /* Set outer values */
2138 if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
2139 if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
2142 if (abs(a - b) <= abs(b - c)) {
2150 /* update predictor */
2151 *dc_val_ptr = &dc_val[0];
2156 /** Get predicted DC value
2157 * prediction dir: left=0, top=1
2158 * @param s MpegEncContext
2159 * @param[in] n block index in the current MB
2160 * @param dc_val_ptr Pointer to DC predictor
2161 * @param dir_ptr Prediction direction for use in AC prediction
2163 static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
2164 int a_avail, int c_avail,
2165 int16_t **dc_val_ptr, int *dir_ptr)
2167 int a, b, c, wrap, pred, scale;
2169 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2172 /* find prediction - wmv3_dc_scale always used here in fact */
2173 if (n < 4) scale = s->y_dc_scale;
2174 else scale = s->c_dc_scale;
2176 wrap = s->block_wrap[n];
2177 dc_val= s->dc_val[0] + s->block_index[n];
2183 b = dc_val[ - 1 - wrap];
2184 a = dc_val[ - wrap];
2185 /* scale predictors if needed */
2186 q1 = s->current_picture.qscale_table[mb_pos];
2187 if(c_avail && (n!= 1 && n!=3)) {
2188 q2 = s->current_picture.qscale_table[mb_pos - 1];
2190 c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2192 if(a_avail && (n!= 2 && n!=3)) {
2193 q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2195 a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2197 if(a_avail && c_avail && (n!=3)) {
2200 if(n != 2) off -= s->mb_stride;
2201 q2 = s->current_picture.qscale_table[off];
2203 b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
2206 if(a_avail && c_avail) {
2207 if(abs(a - b) <= abs(b - c)) {
2214 } else if(a_avail) {
2217 } else if(c_avail) {
2225 /* update predictor */
2226 *dc_val_ptr = &dc_val[0];
2232 * @defgroup std_mb VC1 Macroblock-level functions in Simple/Main Profiles
2233 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
2237 static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
2239 int xy, wrap, pred, a, b, c;
2241 xy = s->block_index[n];
2242 wrap = s->b8_stride;
2247 a = s->coded_block[xy - 1 ];
2248 b = s->coded_block[xy - 1 - wrap];
2249 c = s->coded_block[xy - wrap];
2258 *coded_block_ptr = &s->coded_block[xy];
2264 * Decode one AC coefficient
2265 * @param v The VC1 context
2266 * @param last Last coefficient
2267 * @param skip How much zero coefficients to skip
2268 * @param value Decoded AC coefficient value
2271 static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset)
2273 GetBitContext *gb = &v->s.gb;
2274 int index, escape, run = 0, level = 0, lst = 0;
2276 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
2277 if (index != vc1_ac_sizes[codingset] - 1) {
2278 run = vc1_index_decode_table[codingset][index][0];
2279 level = vc1_index_decode_table[codingset][index][1];
2280 lst = index >= vc1_last_decode_table[codingset];
2284 escape = decode210(gb);
2286 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
2287 run = vc1_index_decode_table[codingset][index][0];
2288 level = vc1_index_decode_table[codingset][index][1];
2289 lst = index >= vc1_last_decode_table[codingset];
2292 level += vc1_last_delta_level_table[codingset][run];
2294 level += vc1_delta_level_table[codingset][run];
2297 run += vc1_last_delta_run_table[codingset][level] + 1;
2299 run += vc1_delta_run_table[codingset][level] + 1;
2305 lst = get_bits1(gb);
2306 if(v->s.esc3_level_length == 0) {
2307 if(v->pq < 8 || v->dquantfrm) { // table 59
2308 v->s.esc3_level_length = get_bits(gb, 3);
2309 if(!v->s.esc3_level_length)
2310 v->s.esc3_level_length = get_bits(gb, 2) + 8;
2312 v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
2314 v->s.esc3_run_length = 3 + get_bits(gb, 2);
2316 run = get_bits(gb, v->s.esc3_run_length);
2317 sign = get_bits1(gb);
2318 level = get_bits(gb, v->s.esc3_level_length);
2329 /** Decode intra block in intra frames - should be faster than decode_intra_block
2330 * @param v VC1Context
2331 * @param block block to decode
2332 * @param coded are AC coeffs present or not
2333 * @param codingset set of VLC to decode data
2335 static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset)
2337 GetBitContext *gb = &v->s.gb;
2338 MpegEncContext *s = &v->s;
2339 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2342 int16_t *ac_val, *ac_val2;
2345 /* Get DC differential */
2347 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2349 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2352 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2357 if (dcdiff == 119 /* ESC index value */)
2359 /* TODO: Optimize */
2360 if (v->pq == 1) dcdiff = get_bits(gb, 10);
2361 else if (v->pq == 2) dcdiff = get_bits(gb, 9);
2362 else dcdiff = get_bits(gb, 8);
2367 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2368 else if (v->pq == 2)
2369 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2376 dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
2379 /* Store the quantized DC coeff, used for prediction */
2381 block[0] = dcdiff * s->y_dc_scale;
2383 block[0] = dcdiff * s->c_dc_scale;
2396 int last = 0, skip, value;
2397 const int8_t *zz_table;
2401 scale = v->pq * 2 + v->halfpq;
2405 zz_table = ff_vc1_horizontal_zz;
2407 zz_table = ff_vc1_vertical_zz;
2409 zz_table = ff_vc1_normal_zz;
2411 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2413 if(dc_pred_dir) //left
2416 ac_val -= 16 * s->block_wrap[n];
2419 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2423 block[zz_table[i++]] = value;
2426 /* apply AC prediction if needed */
2428 if(dc_pred_dir) { //left
2429 for(k = 1; k < 8; k++)
2430 block[k << 3] += ac_val[k];
2432 for(k = 1; k < 8; k++)
2433 block[k] += ac_val[k + 8];
2436 /* save AC coeffs for further prediction */
2437 for(k = 1; k < 8; k++) {
2438 ac_val2[k] = block[k << 3];
2439 ac_val2[k + 8] = block[k];
2442 /* scale AC coeffs */
2443 for(k = 1; k < 64; k++)
2447 block[k] += (block[k] < 0) ? -v->pq : v->pq;
2450 if(s->ac_pred) i = 63;
2456 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2459 scale = v->pq * 2 + v->halfpq;
2460 memset(ac_val2, 0, 16 * 2);
2461 if(dc_pred_dir) {//left
2464 memcpy(ac_val2, ac_val, 8 * 2);
2466 ac_val -= 16 * s->block_wrap[n];
2468 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2471 /* apply AC prediction if needed */
2473 if(dc_pred_dir) { //left
2474 for(k = 1; k < 8; k++) {
2475 block[k << 3] = ac_val[k] * scale;
2476 if(!v->pquantizer && block[k << 3])
2477 block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq;
2480 for(k = 1; k < 8; k++) {
2481 block[k] = ac_val[k + 8] * scale;
2482 if(!v->pquantizer && block[k])
2483 block[k] += (block[k] < 0) ? -v->pq : v->pq;
2489 s->block_last_index[n] = i;
2494 /** Decode intra block in intra frames - should be faster than decode_intra_block
2495 * @param v VC1Context
2496 * @param block block to decode
2497 * @param coded are AC coeffs present or not
2498 * @param codingset set of VLC to decode data
2500 static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant)
2502 GetBitContext *gb = &v->s.gb;
2503 MpegEncContext *s = &v->s;
2504 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2507 int16_t *ac_val, *ac_val2;
2509 int a_avail = v->a_avail, c_avail = v->c_avail;
2510 int use_pred = s->ac_pred;
2513 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2515 /* Get DC differential */
2517 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2519 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2522 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2527 if (dcdiff == 119 /* ESC index value */)
2529 /* TODO: Optimize */
2530 if (mquant == 1) dcdiff = get_bits(gb, 10);
2531 else if (mquant == 2) dcdiff = get_bits(gb, 9);
2532 else dcdiff = get_bits(gb, 8);
2537 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2538 else if (mquant == 2)
2539 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2546 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
2549 /* Store the quantized DC coeff, used for prediction */
2551 block[0] = dcdiff * s->y_dc_scale;
2553 block[0] = dcdiff * s->c_dc_scale;
2562 /* check if AC is needed at all */
2563 if(!a_avail && !c_avail) use_pred = 0;
2564 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2567 scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0);
2569 if(dc_pred_dir) //left
2572 ac_val -= 16 * s->block_wrap[n];
2574 q1 = s->current_picture.qscale_table[mb_pos];
2575 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
2576 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2577 if(dc_pred_dir && n==1) q2 = q1;
2578 if(!dc_pred_dir && n==2) q2 = q1;
2582 int last = 0, skip, value;
2583 const int8_t *zz_table;
2588 zz_table = ff_vc1_horizontal_zz;
2590 zz_table = ff_vc1_vertical_zz;
2592 zz_table = ff_vc1_normal_zz;
2595 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2599 block[zz_table[i++]] = value;
2602 /* apply AC prediction if needed */
2604 /* scale predictors if needed*/
2606 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2607 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2609 if(dc_pred_dir) { //left
2610 for(k = 1; k < 8; k++)
2611 block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2613 for(k = 1; k < 8; k++)
2614 block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2617 if(dc_pred_dir) { //left
2618 for(k = 1; k < 8; k++)
2619 block[k << 3] += ac_val[k];
2621 for(k = 1; k < 8; k++)
2622 block[k] += ac_val[k + 8];
2626 /* save AC coeffs for further prediction */
2627 for(k = 1; k < 8; k++) {
2628 ac_val2[k] = block[k << 3];
2629 ac_val2[k + 8] = block[k];
2632 /* scale AC coeffs */
2633 for(k = 1; k < 64; k++)
2637 block[k] += (block[k] < 0) ? -mquant : mquant;
2640 if(use_pred) i = 63;
2641 } else { // no AC coeffs
2644 memset(ac_val2, 0, 16 * 2);
2645 if(dc_pred_dir) {//left
2647 memcpy(ac_val2, ac_val, 8 * 2);
2649 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2650 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2651 for(k = 1; k < 8; k++)
2652 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2657 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2659 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2660 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2661 for(k = 1; k < 8; k++)
2662 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2667 /* apply AC prediction if needed */
2669 if(dc_pred_dir) { //left
2670 for(k = 1; k < 8; k++) {
2671 block[k << 3] = ac_val2[k] * scale;
2672 if(!v->pquantizer && block[k << 3])
2673 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
2676 for(k = 1; k < 8; k++) {
2677 block[k] = ac_val2[k + 8] * scale;
2678 if(!v->pquantizer && block[k])
2679 block[k] += (block[k] < 0) ? -mquant : mquant;
2685 s->block_last_index[n] = i;
2690 /** Decode intra block in inter frames - more generic version than vc1_decode_i_block
2691 * @param v VC1Context
2692 * @param block block to decode
2693 * @param coded are AC coeffs present or not
2694 * @param mquant block quantizer
2695 * @param codingset set of VLC to decode data
2697 static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset)
2699 GetBitContext *gb = &v->s.gb;
2700 MpegEncContext *s = &v->s;
2701 int dc_pred_dir = 0; /* Direction of the DC prediction used */
2704 int16_t *ac_val, *ac_val2;
2706 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2707 int a_avail = v->a_avail, c_avail = v->c_avail;
2708 int use_pred = s->ac_pred;
2712 /* XXX: Guard against dumb values of mquant */
2713 mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
2715 /* Set DC scale - y and c use the same */
2716 s->y_dc_scale = s->y_dc_scale_table[mquant];
2717 s->c_dc_scale = s->c_dc_scale_table[mquant];
2719 /* Get DC differential */
2721 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2723 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
2726 av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
2731 if (dcdiff == 119 /* ESC index value */)
2733 /* TODO: Optimize */
2734 if (mquant == 1) dcdiff = get_bits(gb, 10);
2735 else if (mquant == 2) dcdiff = get_bits(gb, 9);
2736 else dcdiff = get_bits(gb, 8);
2741 dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
2742 else if (mquant == 2)
2743 dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
2750 dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
2753 /* Store the quantized DC coeff, used for prediction */
2756 block[0] = dcdiff * s->y_dc_scale;
2758 block[0] = dcdiff * s->c_dc_scale;
2767 /* check if AC is needed at all and adjust direction if needed */
2768 if(!a_avail) dc_pred_dir = 1;
2769 if(!c_avail) dc_pred_dir = 0;
2770 if(!a_avail && !c_avail) use_pred = 0;
2771 ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
2774 scale = mquant * 2 + v->halfpq;
2776 if(dc_pred_dir) //left
2779 ac_val -= 16 * s->block_wrap[n];
2781 q1 = s->current_picture.qscale_table[mb_pos];
2782 if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
2783 if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
2784 if(dc_pred_dir && n==1) q2 = q1;
2785 if(!dc_pred_dir && n==2) q2 = q1;
2789 int last = 0, skip, value;
2790 const int8_t *zz_table;
2793 zz_table = ff_vc1_simple_progressive_8x8_zz;
2796 vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
2800 block[zz_table[i++]] = value;
2803 /* apply AC prediction if needed */
2805 /* scale predictors if needed*/
2807 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2808 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2810 if(dc_pred_dir) { //left
2811 for(k = 1; k < 8; k++)
2812 block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2814 for(k = 1; k < 8; k++)
2815 block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2818 if(dc_pred_dir) { //left
2819 for(k = 1; k < 8; k++)
2820 block[k << 3] += ac_val[k];
2822 for(k = 1; k < 8; k++)
2823 block[k] += ac_val[k + 8];
2827 /* save AC coeffs for further prediction */
2828 for(k = 1; k < 8; k++) {
2829 ac_val2[k] = block[k << 3];
2830 ac_val2[k + 8] = block[k];
2833 /* scale AC coeffs */
2834 for(k = 1; k < 64; k++)
2838 block[k] += (block[k] < 0) ? -mquant : mquant;
2841 if(use_pred) i = 63;
2842 } else { // no AC coeffs
2845 memset(ac_val2, 0, 16 * 2);
2846 if(dc_pred_dir) {//left
2848 memcpy(ac_val2, ac_val, 8 * 2);
2850 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2851 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2852 for(k = 1; k < 8; k++)
2853 ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2858 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
2860 q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
2861 q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
2862 for(k = 1; k < 8; k++)
2863 ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
2868 /* apply AC prediction if needed */
2870 if(dc_pred_dir) { //left
2871 for(k = 1; k < 8; k++) {
2872 block[k << 3] = ac_val2[k] * scale;
2873 if(!v->pquantizer && block[k << 3])
2874 block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
2877 for(k = 1; k < 8; k++) {
2878 block[k] = ac_val2[k + 8] * scale;
2879 if(!v->pquantizer && block[k])
2880 block[k] += (block[k] < 0) ? -mquant : mquant;
2886 s->block_last_index[n] = i;
2893 static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block)
2895 MpegEncContext *s = &v->s;
2896 GetBitContext *gb = &s->gb;
2899 int scale, off, idx, last, skip, value;
2900 int ttblk = ttmb & 7;
2903 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)];
2905 if(ttblk == TT_4X4) {
2906 subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
2908 if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) {
2909 subblkpat = decode012(gb);
2910 if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits
2911 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4;
2912 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8;
2914 scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0);
2916 // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
2917 if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
2918 subblkpat = 2 - (ttblk == TT_8X4_TOP);
2921 if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
2922 subblkpat = 2 - (ttblk == TT_4X8_LEFT);
2930 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2934 idx = ff_vc1_simple_progressive_8x8_zz[i++];
2935 block[idx] = value * scale;
2937 block[idx] += (block[idx] < 0) ? -mquant : mquant;
2939 s->dsp.vc1_inv_trans_8x8(block);
2942 for(j = 0; j < 4; j++) {
2943 last = subblkpat & (1 << (3 - j));
2945 off = (j & 1) * 4 + (j & 2) * 16;
2947 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2951 idx = ff_vc1_simple_progressive_4x4_zz[i++];
2952 block[idx + off] = value * scale;
2954 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2956 if(!(subblkpat & (1 << (3 - j))))
2957 s->dsp.vc1_inv_trans_4x4(block, j);
2961 for(j = 0; j < 2; j++) {
2962 last = subblkpat & (1 << (1 - j));
2966 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2970 if(v->profile < PROFILE_ADVANCED)
2971 idx = ff_vc1_simple_progressive_8x4_zz[i++];
2973 idx = ff_vc1_adv_progressive_8x4_zz[i++];
2974 block[idx + off] = value * scale;
2976 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
2978 if(!(subblkpat & (1 << (1 - j))))
2979 s->dsp.vc1_inv_trans_8x4(block, j);
2983 for(j = 0; j < 2; j++) {
2984 last = subblkpat & (1 << (1 - j));
2988 vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
2992 if(v->profile < PROFILE_ADVANCED)
2993 idx = ff_vc1_simple_progressive_4x8_zz[i++];
2995 idx = ff_vc1_adv_progressive_4x8_zz[i++];
2996 block[idx + off] = value * scale;
2998 block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
3000 if(!(subblkpat & (1 << (1 - j))))
3001 s->dsp.vc1_inv_trans_4x8(block, j);
3009 /** Decode one P-frame MB (in Simple/Main profile)
3011 static int vc1_decode_p_mb(VC1Context *v)
3013 MpegEncContext *s = &v->s;
3014 GetBitContext *gb = &s->gb;
3016 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3017 int cbp; /* cbp decoding stuff */
3018 int mqdiff, mquant; /* MB quantization */
3019 int ttmb = v->ttfrm; /* MB Transform type */
3022 static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
3023 offset_table[6] = { 0, 1, 3, 7, 15, 31 };
3024 int mb_has_coeffs = 1; /* last_flag */
3025 int dmv_x, dmv_y; /* Differential MV components */
3026 int index, index1; /* LUT indices */
3027 int val, sign; /* temp values */
3028 int first_block = 1;
3030 int skipped, fourmv;
3032 mquant = v->pq; /* Loosy initialization */
3034 if (v->mv_type_is_raw)
3035 fourmv = get_bits1(gb);
3037 fourmv = v->mv_type_mb_plane[mb_pos];
3039 skipped = get_bits1(gb);
3041 skipped = v->s.mbskip_table[mb_pos];
3043 s->dsp.clear_blocks(s->block[0]);
3045 if (!fourmv) /* 1MV mode */
3049 GET_MVDATA(dmv_x, dmv_y);
3052 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3053 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3055 s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
3056 vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]);
3058 /* FIXME Set DC val for inter block ? */
3059 if (s->mb_intra && !mb_has_coeffs)
3062 s->ac_pred = get_bits1(gb);
3065 else if (mb_has_coeffs)
3067 if (s->mb_intra) s->ac_pred = get_bits1(gb);
3068 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3076 s->current_picture.qscale_table[mb_pos] = mquant;
3078 if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
3079 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
3080 VC1_TTMB_VLC_BITS, 2);
3081 if(!s->mb_intra) vc1_mc_1mv(v, 0);
3085 s->dc_val[0][s->block_index[i]] = 0;
3087 val = ((cbp >> (5 - i)) & 1);
3088 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3089 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3091 /* check if prediction blocks A and C are available */
3092 v->a_avail = v->c_avail = 0;
3093 if(i == 2 || i == 3 || !s->first_slice_line)
3094 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3095 if(i == 1 || i == 3 || s->mb_x)
3096 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3098 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
3099 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3100 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3101 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3102 for(j = 0; j < 64; j++) s->block[i][j] += 128;
3103 s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3104 if(v->pq >= 9 && v->overlap) {
3106 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3108 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3111 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3112 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3114 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3115 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3122 for(i = 0; i < 6; i++) {
3123 v->mb_type[0][s->block_index[i]] = 0;
3124 s->dc_val[0][s->block_index[i]] = 0;
3126 s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
3127 s->current_picture.qscale_table[mb_pos] = 0;
3128 vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
3135 if (!skipped /* unskipped MB */)
3137 int intra_count = 0, coded_inter = 0;
3138 int is_intra[6], is_coded[6];
3140 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3143 val = ((cbp >> (5 - i)) & 1);
3144 s->dc_val[0][s->block_index[i]] = 0;
3151 GET_MVDATA(dmv_x, dmv_y);
3153 vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
3154 if(!s->mb_intra) vc1_mc_4mv_luma(v, i);
3155 intra_count += s->mb_intra;
3156 is_intra[i] = s->mb_intra;
3157 is_coded[i] = mb_has_coeffs;
3160 is_intra[i] = (intra_count >= 3);
3163 if(i == 4) vc1_mc_4mv_chroma(v);
3164 v->mb_type[0][s->block_index[i]] = is_intra[i];
3165 if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i];
3167 // if there are no coded blocks then don't do anything more
3168 if(!intra_count && !coded_inter) return 0;
3171 s->current_picture.qscale_table[mb_pos] = mquant;
3172 /* test if block is intra and has pred */
3177 if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
3178 || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
3183 if(intrapred)s->ac_pred = get_bits1(gb);
3184 else s->ac_pred = 0;
3186 if (!v->ttmbf && coded_inter)
3187 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3191 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3192 s->mb_intra = is_intra[i];
3194 /* check if prediction blocks A and C are available */
3195 v->a_avail = v->c_avail = 0;
3196 if(i == 2 || i == 3 || !s->first_slice_line)
3197 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3198 if(i == 1 || i == 3 || s->mb_x)
3199 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3201 vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset);
3202 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3203 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3204 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3205 for(j = 0; j < 64; j++) s->block[i][j] += 128;
3206 s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3207 if(v->pq >= 9 && v->overlap) {
3209 s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3211 s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3213 } else if(is_coded[i]) {
3214 status = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3215 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3217 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3218 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3226 s->current_picture.qscale_table[mb_pos] = 0;
3227 for (i=0; i<6; i++) {
3228 v->mb_type[0][s->block_index[i]] = 0;
3229 s->dc_val[0][s->block_index[i]] = 0;
3233 vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]);
3234 vc1_mc_4mv_luma(v, i);
3236 vc1_mc_4mv_chroma(v);
3237 s->current_picture.qscale_table[mb_pos] = 0;
3242 /* Should never happen */
3246 /** Decode one B-frame MB (in Main profile)
3248 static void vc1_decode_b_mb(VC1Context *v)
3250 MpegEncContext *s = &v->s;
3251 GetBitContext *gb = &s->gb;
3253 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3254 int cbp = 0; /* cbp decoding stuff */
3255 int mqdiff, mquant; /* MB quantization */
3256 int ttmb = v->ttfrm; /* MB Transform type */
3258 static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
3259 offset_table[6] = { 0, 1, 3, 7, 15, 31 };
3260 int mb_has_coeffs = 0; /* last_flag */
3261 int index, index1; /* LUT indices */
3262 int val, sign; /* temp values */
3263 int first_block = 1;
3265 int skipped, direct;
3266 int dmv_x[2], dmv_y[2];
3267 int bmvtype = BMV_TYPE_BACKWARD;
3269 mquant = v->pq; /* Loosy initialization */
3273 direct = get_bits1(gb);
3275 direct = v->direct_mb_plane[mb_pos];
3277 skipped = get_bits1(gb);
3279 skipped = v->s.mbskip_table[mb_pos];
3281 s->dsp.clear_blocks(s->block[0]);
3282 dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
3283 for(i = 0; i < 6; i++) {
3284 v->mb_type[0][s->block_index[i]] = 0;
3285 s->dc_val[0][s->block_index[i]] = 0;
3287 s->current_picture.qscale_table[mb_pos] = 0;
3291 GET_MVDATA(dmv_x[0], dmv_y[0]);
3292 dmv_x[1] = dmv_x[0];
3293 dmv_y[1] = dmv_y[0];
3295 if(skipped || !s->mb_intra) {
3296 bmvtype = decode012(gb);
3299 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
3302 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
3305 bmvtype = BMV_TYPE_INTERPOLATED;
3306 dmv_x[0] = dmv_y[0] = 0;
3310 for(i = 0; i < 6; i++)
3311 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3314 if(direct) bmvtype = BMV_TYPE_INTERPOLATED;
3315 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3316 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3320 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3324 s->current_picture.qscale_table[mb_pos] = mquant;
3326 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3327 dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
3328 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3329 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3331 if(!mb_has_coeffs && !s->mb_intra) {
3332 /* no coded blocks - effectively skipped */
3333 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3334 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3337 if(s->mb_intra && !mb_has_coeffs) {
3339 s->current_picture.qscale_table[mb_pos] = mquant;
3340 s->ac_pred = get_bits1(gb);
3342 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3344 if(bmvtype == BMV_TYPE_INTERPOLATED) {
3345 GET_MVDATA(dmv_x[0], dmv_y[0]);
3346 if(!mb_has_coeffs) {
3347 /* interpolated skipped block */
3348 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3349 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3353 vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
3355 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
3358 s->ac_pred = get_bits1(gb);
3359 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
3361 s->current_picture.qscale_table[mb_pos] = mquant;
3362 if(!v->ttmbf && !s->mb_intra && mb_has_coeffs)
3363 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
3369 s->dc_val[0][s->block_index[i]] = 0;
3371 val = ((cbp >> (5 - i)) & 1);
3372 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
3373 v->mb_type[0][s->block_index[i]] = s->mb_intra;
3375 /* check if prediction blocks A and C are available */
3376 v->a_avail = v->c_avail = 0;
3377 if(i == 2 || i == 3 || !s->first_slice_line)
3378 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
3379 if(i == 1 || i == 3 || s->mb_x)
3380 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
3382 vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
3383 if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
3384 s->dsp.vc1_inv_trans_8x8(s->block[i]);
3385 if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
3386 for(j = 0; j < 64; j++) s->block[i][j] += 128;
3387 s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
3389 vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
3390 if(!v->ttmbf && ttmb < 8) ttmb = -1;
3392 if((i<4) || !(s->flags & CODEC_FLAG_GRAY))
3393 s->dsp.add_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
3398 /** Decode blocks of I-frame
3400 static void vc1_decode_i_blocks(VC1Context *v)
3403 MpegEncContext *s = &v->s;
3408 /* select codingmode used for VLC tables selection */
3409 switch(v->y_ac_table_index){
3411 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3414 v->codingset = CS_HIGH_MOT_INTRA;
3417 v->codingset = CS_MID_RATE_INTRA;
3421 switch(v->c_ac_table_index){
3423 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3426 v->codingset2 = CS_HIGH_MOT_INTER;
3429 v->codingset2 = CS_MID_RATE_INTER;
3433 /* Set DC scale - y and c use the same */
3434 s->y_dc_scale = s->y_dc_scale_table[v->pq];
3435 s->c_dc_scale = s->c_dc_scale_table[v->pq];
3438 s->mb_x = s->mb_y = 0;
3440 s->first_slice_line = 1;
3441 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3442 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3443 ff_init_block_index(s);
3444 ff_update_block_index(s);
3445 s->dsp.clear_blocks(s->block[0]);
3446 mb_pos = s->mb_x + s->mb_y * s->mb_width;
3447 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
3448 s->current_picture.qscale_table[mb_pos] = v->pq;
3449 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3450 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3452 // do actual MB decoding and displaying
3453 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
3454 v->s.ac_pred = get_bits1(&v->s.gb);
3456 for(k = 0; k < 6; k++) {
3457 val = ((cbp >> (5 - k)) & 1);
3460 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
3464 cbp |= val << (5 - k);
3466 vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
3468 s->dsp.vc1_inv_trans_8x8(s->block[k]);
3469 if(v->pq >= 9 && v->overlap) {
3470 for(j = 0; j < 64; j++) s->block[k][j] += 128;
3474 vc1_put_block(v, s->block);
3475 if(v->pq >= 9 && v->overlap) {
3477 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
3478 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3479 if(!(s->flags & CODEC_FLAG_GRAY)) {
3480 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
3481 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
3484 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
3485 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3486 if(!s->first_slice_line) {
3487 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
3488 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
3489 if(!(s->flags & CODEC_FLAG_GRAY)) {
3490 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
3491 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
3494 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3495 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3498 if(get_bits_count(&s->gb) > v->bits) {
3499 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3500 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
3504 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3505 s->first_slice_line = 0;
3507 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3510 /** Decode blocks of I-frame for advanced profile
3512 static void vc1_decode_i_blocks_adv(VC1Context *v)
3515 MpegEncContext *s = &v->s;
3522 GetBitContext *gb = &s->gb;
3524 /* select codingmode used for VLC tables selection */
3525 switch(v->y_ac_table_index){
3527 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3530 v->codingset = CS_HIGH_MOT_INTRA;
3533 v->codingset = CS_MID_RATE_INTRA;
3537 switch(v->c_ac_table_index){
3539 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3542 v->codingset2 = CS_HIGH_MOT_INTER;
3545 v->codingset2 = CS_MID_RATE_INTER;
3550 s->mb_x = s->mb_y = 0;
3552 s->first_slice_line = 1;
3553 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3554 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3555 ff_init_block_index(s);
3556 ff_update_block_index(s);
3557 s->dsp.clear_blocks(s->block[0]);
3558 mb_pos = s->mb_x + s->mb_y * s->mb_stride;
3559 s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
3560 s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
3561 s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
3563 // do actual MB decoding and displaying
3564 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
3565 if(v->acpred_is_raw)
3566 v->s.ac_pred = get_bits1(&v->s.gb);
3568 v->s.ac_pred = v->acpred_plane[mb_pos];
3570 if(v->condover == CONDOVER_SELECT) {
3571 if(v->overflg_is_raw)
3572 overlap = get_bits1(&v->s.gb);
3574 overlap = v->over_flags_plane[mb_pos];
3576 overlap = (v->condover == CONDOVER_ALL);
3580 s->current_picture.qscale_table[mb_pos] = mquant;
3581 /* Set DC scale - y and c use the same */
3582 s->y_dc_scale = s->y_dc_scale_table[mquant];
3583 s->c_dc_scale = s->c_dc_scale_table[mquant];
3585 for(k = 0; k < 6; k++) {
3586 val = ((cbp >> (5 - k)) & 1);
3589 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
3593 cbp |= val << (5 - k);
3595 v->a_avail = !s->first_slice_line || (k==2 || k==3);
3596 v->c_avail = !!s->mb_x || (k==1 || k==3);
3598 vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant);
3600 s->dsp.vc1_inv_trans_8x8(s->block[k]);
3601 for(j = 0; j < 64; j++) s->block[k][j] += 128;
3604 vc1_put_block(v, s->block);
3607 s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
3608 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3609 if(!(s->flags & CODEC_FLAG_GRAY)) {
3610 s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
3611 s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
3614 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
3615 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3616 if(!s->first_slice_line) {
3617 s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
3618 s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
3619 if(!(s->flags & CODEC_FLAG_GRAY)) {
3620 s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
3621 s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
3624 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
3625 s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
3628 if(get_bits_count(&s->gb) > v->bits) {
3629 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3630 av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
3634 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3635 s->first_slice_line = 0;
3637 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3640 static void vc1_decode_p_blocks(VC1Context *v)
3642 MpegEncContext *s = &v->s;
3644 /* select codingmode used for VLC tables selection */
3645 switch(v->c_ac_table_index){
3647 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3650 v->codingset = CS_HIGH_MOT_INTRA;
3653 v->codingset = CS_MID_RATE_INTRA;
3657 switch(v->c_ac_table_index){
3659 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3662 v->codingset2 = CS_HIGH_MOT_INTER;
3665 v->codingset2 = CS_MID_RATE_INTER;
3669 s->first_slice_line = 1;
3670 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3671 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3672 ff_init_block_index(s);
3673 ff_update_block_index(s);
3674 s->dsp.clear_blocks(s->block[0]);
3677 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
3678 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3679 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);
3683 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3684 s->first_slice_line = 0;
3686 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3689 static void vc1_decode_b_blocks(VC1Context *v)
3691 MpegEncContext *s = &v->s;
3693 /* select codingmode used for VLC tables selection */
3694 switch(v->c_ac_table_index){
3696 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
3699 v->codingset = CS_HIGH_MOT_INTRA;
3702 v->codingset = CS_MID_RATE_INTRA;
3706 switch(v->c_ac_table_index){
3708 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
3711 v->codingset2 = CS_HIGH_MOT_INTER;
3714 v->codingset2 = CS_MID_RATE_INTER;
3718 s->first_slice_line = 1;
3719 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3720 for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
3721 ff_init_block_index(s);
3722 ff_update_block_index(s);
3723 s->dsp.clear_blocks(s->block[0]);
3726 if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
3727 ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
3728 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);
3732 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3733 s->first_slice_line = 0;
3735 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3738 static void vc1_decode_skip_blocks(VC1Context *v)
3740 MpegEncContext *s = &v->s;
3742 ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
3743 s->first_slice_line = 1;
3744 for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
3746 ff_init_block_index(s);
3747 ff_update_block_index(s);
3748 memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
3749 memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
3750 memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
3751 ff_draw_horiz_band(s, s->mb_y * 16, 16);
3752 s->first_slice_line = 0;
3754 s->pict_type = P_TYPE;
3757 static void vc1_decode_blocks(VC1Context *v)
3760 v->s.esc3_level_length = 0;
3762 ff_intrax8_decode_picture(&v->x8, 2*v->pq+v->halfpq, v->pq*(!v->pquantizer) );
3765 switch(v->s.pict_type) {
3767 if(v->profile == PROFILE_ADVANCED)
3768 vc1_decode_i_blocks_adv(v);
3770 vc1_decode_i_blocks(v);
3773 if(v->p_frame_skipped)
3774 vc1_decode_skip_blocks(v);
3776 vc1_decode_p_blocks(v);
3780 if(v->profile == PROFILE_ADVANCED)
3781 vc1_decode_i_blocks_adv(v);
3783 vc1_decode_i_blocks(v);
3785 vc1_decode_b_blocks(v);
3790 /** Find VC-1 marker in buffer
3791 * @return position where next marker starts or end of buffer if no marker found
3793 static av_always_inline uint8_t* find_next_marker(uint8_t *src, uint8_t *end)
3795 uint32_t mrk = 0xFFFFFFFF;
3797 if(end-src < 4) return end;
3799 mrk = (mrk << 8) | *src++;
3806 static av_always_inline int vc1_unescape_buffer(uint8_t *src, int size, uint8_t *dst)
3811 for(dsize = 0; dsize < size; dsize++) *dst++ = *src++;
3814 for(i = 0; i < size; i++, src++) {
3815 if(src[0] == 3 && i >= 2 && !src[-1] && !src[-2] && i < size-1 && src[1] < 4) {
3816 dst[dsize++] = src[1];
3820 dst[dsize++] = *src;
3825 /** Initialize a VC1/WMV3 decoder
3826 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3827 * @todo TODO: Decypher remaining bits in extra_data
3829 static int vc1_decode_init(AVCodecContext *avctx)
3831 VC1Context *v = avctx->priv_data;
3832 MpegEncContext *s = &v->s;
3835 if (!avctx->extradata_size || !avctx->extradata) return -1;
3836 if (!(avctx->flags & CODEC_FLAG_GRAY))
3837 avctx->pix_fmt = PIX_FMT_YUV420P;
3839 avctx->pix_fmt = PIX_FMT_GRAY8;
3841 avctx->flags |= CODEC_FLAG_EMU_EDGE;
3842 v->s.flags |= CODEC_FLAG_EMU_EDGE;
3844 if(avctx->idct_algo==FF_IDCT_AUTO){
3845 avctx->idct_algo=FF_IDCT_WMV2;
3848 if(ff_h263_decode_init(avctx) < 0)
3850 if (vc1_init_common(v) < 0) return -1;
3852 avctx->coded_width = avctx->width;
3853 avctx->coded_height = avctx->height;
3854 if (avctx->codec_id == CODEC_ID_WMV3)
3858 // looks like WMV3 has a sequence header stored in the extradata
3859 // advanced sequence header may be before the first frame
3860 // the last byte of the extradata is a version number, 1 for the
3861 // samples we can decode
3863 init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
3865 if (decode_sequence_header(avctx, &gb) < 0)
3868 count = avctx->extradata_size*8 - get_bits_count(&gb);
3871 av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
3872 count, get_bits(&gb, count));
3876 av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
3878 } else { // VC1/WVC1
3879 uint8_t *start = avctx->extradata, *end = avctx->extradata + avctx->extradata_size;
3880 uint8_t *next; int size, buf2_size;
3881 uint8_t *buf2 = NULL;
3882 int seq_inited = 0, ep_inited = 0;
3884 if(avctx->extradata_size < 16) {
3885 av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
3889 buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
3890 if(start[0]) start++; // in WVC1 extradata first byte is its size
3892 for(; next < end; start = next){
3893 next = find_next_marker(start + 4, end);
3894 size = next - start - 4;
3895 if(size <= 0) continue;
3896 buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
3897 init_get_bits(&gb, buf2, buf2_size * 8);
3898 switch(AV_RB32(start)){
3899 case VC1_CODE_SEQHDR:
3900 if(decode_sequence_header(avctx, &gb) < 0){
3906 case VC1_CODE_ENTRYPOINT:
3907 if(decode_entry_point(avctx, &gb) < 0){
3916 if(!seq_inited || !ep_inited){
3917 av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
3921 avctx->has_b_frames= !!(avctx->max_b_frames);
3922 s->low_delay = !avctx->has_b_frames;
3924 s->mb_width = (avctx->coded_width+15)>>4;
3925 s->mb_height = (avctx->coded_height+15)>>4;
3927 /* Allocate mb bitplanes */
3928 v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3929 v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height);
3930 v->acpred_plane = av_malloc(s->mb_stride * s->mb_height);
3931 v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height);
3933 /* allocate block type info in that way so it could be used with s->block_index[] */
3934 v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
3935 v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
3936 v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1;
3937 v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1);
3939 /* Init coded blocks info */
3940 if (v->profile == PROFILE_ADVANCED)
3942 // if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
3944 // if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
3948 ff_intrax8_common_init(&v->x8,s);
3953 /** Decode a VC1/WMV3 frame
3954 * @todo TODO: Handle VC-1 IDUs (Transport level?)
3956 static int vc1_decode_frame(AVCodecContext *avctx,
3957 void *data, int *data_size,
3958 uint8_t *buf, int buf_size)
3960 VC1Context *v = avctx->priv_data;
3961 MpegEncContext *s = &v->s;
3962 AVFrame *pict = data;
3963 uint8_t *buf2 = NULL;
3965 /* no supplementary picture */
3966 if (buf_size == 0) {
3967 /* special case for last picture */
3968 if (s->low_delay==0 && s->next_picture_ptr) {
3969 *pict= *(AVFrame*)s->next_picture_ptr;
3970 s->next_picture_ptr= NULL;
3972 *data_size = sizeof(AVFrame);
3978 /* We need to set current_picture_ptr before reading the header,
3979 * otherwise we cannot store anything in there. */
3980 if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
3981 int i= ff_find_unused_picture(s, 0);
3982 s->current_picture_ptr= &s->picture[i];
3985 //for advanced profile we may need to parse and unescape data
3986 if (avctx->codec_id == CODEC_ID_VC1) {
3988 buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
3990 if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
3991 uint8_t *start, *end, *next;
3995 for(start = buf, end = buf + buf_size; next < end; start = next){
3996 next = find_next_marker(start + 4, end);
3997 size = next - start - 4;
3998 if(size <= 0) continue;
3999 switch(AV_RB32(start)){
4000 case VC1_CODE_FRAME:
4001 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
4003 case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
4004 buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
4005 init_get_bits(&s->gb, buf2, buf_size2*8);
4006 decode_entry_point(avctx, &s->gb);
4008 case VC1_CODE_SLICE:
4009 av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n");
4014 }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
4017 divider = find_next_marker(buf, buf + buf_size);
4018 if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
4019 av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
4023 buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
4025 av_free(buf2);return -1;
4027 buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
4029 init_get_bits(&s->gb, buf2, buf_size2*8);
4031 init_get_bits(&s->gb, buf, buf_size*8);
4032 // do parse frame header
4033 if(v->profile < PROFILE_ADVANCED) {
4034 if(vc1_parse_frame_header(v, &s->gb) == -1) {
4039 if(vc1_parse_frame_header_adv(v, &s->gb) == -1) {
4045 if(s->pict_type != I_TYPE && !v->res_rtm_flag){
4051 s->current_picture.pict_type= s->pict_type;
4052 s->current_picture.key_frame= s->pict_type == I_TYPE;
4054 /* skip B-frames if we don't have reference frames */
4055 if(s->last_picture_ptr==NULL && (s->pict_type==B_TYPE || s->dropable)){
4057 return -1;//buf_size;
4059 /* skip b frames if we are in a hurry */
4060 if(avctx->hurry_up && s->pict_type==B_TYPE) return -1;//buf_size;
4061 if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==B_TYPE)
4062 || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=I_TYPE)
4063 || avctx->skip_frame >= AVDISCARD_ALL) {
4067 /* skip everything if we are in a hurry>=5 */
4068 if(avctx->hurry_up>=5) {
4070 return -1;//buf_size;
4073 if(s->next_p_frame_damaged){
4074 if(s->pict_type==B_TYPE)
4077 s->next_p_frame_damaged=0;
4080 if(MPV_frame_start(s, avctx) < 0) {
4085 s->me.qpel_put= s->dsp.put_qpel_pixels_tab;
4086 s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
4088 ff_er_frame_start(s);
4090 v->bits = buf_size * 8;
4091 vc1_decode_blocks(v);
4092 //av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8);
4093 // if(get_bits_count(&s->gb) > buf_size * 8)
4099 assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
4100 assert(s->current_picture.pict_type == s->pict_type);
4101 if (s->pict_type == B_TYPE || s->low_delay) {
4102 *pict= *(AVFrame*)s->current_picture_ptr;
4103 } else if (s->last_picture_ptr != NULL) {
4104 *pict= *(AVFrame*)s->last_picture_ptr;
4107 if(s->last_picture_ptr || s->low_delay){
4108 *data_size = sizeof(AVFrame);
4109 ff_print_debug_info(s, pict);
4112 /* Return the Picture timestamp as the frame number */
4113 /* we substract 1 because it is added on utils.c */
4114 avctx->frame_number = s->picture_number - 1;
4121 /** Close a VC1/WMV3 decoder
4122 * @warning Initial try at using MpegEncContext stuff
4124 static int vc1_decode_end(AVCodecContext *avctx)
4126 VC1Context *v = avctx->priv_data;
4128 av_freep(&v->hrd_rate);
4129 av_freep(&v->hrd_buffer);
4130 MPV_common_end(&v->s);
4131 av_freep(&v->mv_type_mb_plane);
4132 av_freep(&v->direct_mb_plane);
4133 av_freep(&v->acpred_plane);
4134 av_freep(&v->over_flags_plane);
4135 av_freep(&v->mb_type_base);
4140 AVCodec vc1_decoder = {
4153 AVCodec wmv3_decoder = {