2 * VC-1 and WMV3 decoder
3 * Copyright (c) 2011 Mashiat Sarker Shakkhar
4 * Copyright (c) 2006-2007 Konstantin Shishkov
5 * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
7 * This file is part of FFmpeg.
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 * VC-1 and WMV3 block decoding routines
30 #include "h264chroma.h"
32 #include "mpegvideo.h"
35 /** Do motion compensation over 1 macroblock
36 * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
38 void ff_vc1_mc_1mv(VC1Context *v, int dir)
40 MpegEncContext *s = &v->s;
41 H264ChromaContext *h264chroma = &v->h264chroma;
42 uint8_t *srcY, *srcU, *srcV;
43 int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
44 int v_edge_pos = s->v_edge_pos >> v->field_mode;
46 uint8_t (*luty)[256], (*lutuv)[256];
49 if ((!v->field_mode ||
50 (v->ref_field_type[dir] == 1 && v->cur_field_type == 1)) &&
51 !v->s.last_picture.f->data[0])
54 mx = s->mv[dir][0][0];
55 my = s->mv[dir][0][1];
57 // store motion vectors for further use in B frames
58 if (s->pict_type == AV_PICTURE_TYPE_P) {
59 for (i = 0; i < 4; i++) {
60 s->current_picture.motion_val[1][s->block_index[i] + v->blocks_off][0] = mx;
61 s->current_picture.motion_val[1][s->block_index[i] + v->blocks_off][1] = my;
65 uvmx = (mx + ((mx & 3) == 3)) >> 1;
66 uvmy = (my + ((my & 3) == 3)) >> 1;
67 v->luma_mv[s->mb_x][0] = uvmx;
68 v->luma_mv[s->mb_x][1] = uvmy;
71 v->cur_field_type != v->ref_field_type[dir]) {
72 my = my - 2 + 4 * v->cur_field_type;
73 uvmy = uvmy - 2 + 4 * v->cur_field_type;
76 // fastuvmc shall be ignored for interlaced frame picture
77 if (v->fastuvmc && (v->fcm != ILACE_FRAME)) {
78 uvmx = uvmx + ((uvmx < 0) ? (uvmx & 1) : -(uvmx & 1));
79 uvmy = uvmy + ((uvmy < 0) ? (uvmy & 1) : -(uvmy & 1));
82 if (v->field_mode && (v->cur_field_type != v->ref_field_type[dir]) && v->second_field) {
83 srcY = s->current_picture.f->data[0];
84 srcU = s->current_picture.f->data[1];
85 srcV = s->current_picture.f->data[2];
87 lutuv = v->curr_lutuv;
88 use_ic = *v->curr_use_ic;
90 srcY = s->last_picture.f->data[0];
91 srcU = s->last_picture.f->data[1];
92 srcV = s->last_picture.f->data[2];
94 lutuv = v->last_lutuv;
95 use_ic = v->last_use_ic;
98 srcY = s->next_picture.f->data[0];
99 srcU = s->next_picture.f->data[1];
100 srcV = s->next_picture.f->data[2];
102 lutuv = v->next_lutuv;
103 use_ic = v->next_use_ic;
106 if (!srcY || !srcU) {
107 av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
111 src_x = s->mb_x * 16 + (mx >> 2);
112 src_y = s->mb_y * 16 + (my >> 2);
113 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
114 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
116 if (v->profile != PROFILE_ADVANCED) {
117 src_x = av_clip( src_x, -16, s->mb_width * 16);
118 src_y = av_clip( src_y, -16, s->mb_height * 16);
119 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
120 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
122 src_x = av_clip( src_x, -17, s->avctx->coded_width);
123 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
124 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
125 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
128 srcY += src_y * s->linesize + src_x;
129 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
130 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
132 if (v->field_mode && v->ref_field_type[dir]) {
133 srcY += s->current_picture_ptr->f->linesize[0];
134 srcU += s->current_picture_ptr->f->linesize[1];
135 srcV += s->current_picture_ptr->f->linesize[2];
138 /* for grayscale we should not try to read from unknown area */
139 if (s->flags & CODEC_FLAG_GRAY) {
140 srcU = s->edge_emu_buffer + 18 * s->linesize;
141 srcV = s->edge_emu_buffer + 18 * s->linesize;
144 if (v->rangeredfrm || use_ic
145 || s->h_edge_pos < 22 || v_edge_pos < 22
146 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel * 3
147 || (unsigned)(src_y - 1) > v_edge_pos - (my&3) - 16 - 3) {
148 uint8_t *ubuf = s->edge_emu_buffer + 19 * s->linesize;
149 uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
151 srcY -= s->mspel * (1 + s->linesize);
152 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
153 s->linesize, s->linesize,
154 17 + s->mspel * 2, 17 + s->mspel * 2,
155 src_x - s->mspel, src_y - s->mspel,
156 s->h_edge_pos, v_edge_pos);
157 srcY = s->edge_emu_buffer;
158 s->vdsp.emulated_edge_mc(ubuf, srcU,
159 s->uvlinesize, s->uvlinesize,
162 s->h_edge_pos >> 1, v_edge_pos >> 1);
163 s->vdsp.emulated_edge_mc(vbuf, srcV,
164 s->uvlinesize, s->uvlinesize,
167 s->h_edge_pos >> 1, v_edge_pos >> 1);
170 /* if we deal with range reduction we need to scale source blocks */
171 if (v->rangeredfrm) {
176 for (j = 0; j < 17 + s->mspel * 2; j++) {
177 for (i = 0; i < 17 + s->mspel * 2; i++)
178 src[i] = ((src[i] - 128) >> 1) + 128;
183 for (j = 0; j < 9; j++) {
184 for (i = 0; i < 9; i++) {
185 src[i] = ((src[i] - 128) >> 1) + 128;
186 src2[i] = ((src2[i] - 128) >> 1) + 128;
188 src += s->uvlinesize;
189 src2 += s->uvlinesize;
192 /* if we deal with intensity compensation we need to scale source blocks */
198 for (j = 0; j < 17 + s->mspel * 2; j++) {
199 int f = v->field_mode ? v->ref_field_type[dir] : ((j + src_y - s->mspel) & 1) ;
200 for (i = 0; i < 17 + s->mspel * 2; i++)
201 src[i] = luty[f][src[i]];
206 for (j = 0; j < 9; j++) {
207 int f = v->field_mode ? v->ref_field_type[dir] : ((j + uvsrc_y) & 1);
208 for (i = 0; i < 9; i++) {
209 src[i] = lutuv[f][src[i]];
210 src2[i] = lutuv[f][src2[i]];
212 src += s->uvlinesize;
213 src2 += s->uvlinesize;
216 srcY += s->mspel * (1 + s->linesize);
220 dxy = ((my & 3) << 2) | (mx & 3);
221 v->vc1dsp.put_vc1_mspel_pixels_tab[0][dxy](s->dest[0] , srcY , s->linesize, v->rnd);
222 } else { // hpel mc - always used for luma
223 dxy = (my & 2) | ((mx & 2) >> 1);
225 s->hdsp.put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
227 s->hdsp.put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
230 if (s->flags & CODEC_FLAG_GRAY) return;
231 /* Chroma MC always uses qpel bilinear */
232 uvmx = (uvmx & 3) << 1;
233 uvmy = (uvmy & 3) << 1;
235 h264chroma->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
236 h264chroma->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
238 v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
239 v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
243 static inline int median4(int a, int b, int c, int d)
246 if (c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2;
247 else return (FFMIN(b, c) + FFMAX(a, d)) / 2;
249 if (c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2;
250 else return (FFMIN(a, c) + FFMAX(b, d)) / 2;
254 /** Do motion compensation for 4-MV macroblock - luminance block
256 void ff_vc1_mc_4mv_luma(VC1Context *v, int n, int dir, int avg)
258 MpegEncContext *s = &v->s;
260 int dxy, mx, my, src_x, src_y;
262 int fieldmv = (v->fcm == ILACE_FRAME) ? v->blk_mv_type[s->block_index[n]] : 0;
263 int v_edge_pos = s->v_edge_pos >> v->field_mode;
264 uint8_t (*luty)[256];
267 if ((!v->field_mode ||
268 (v->ref_field_type[dir] == 1 && v->cur_field_type == 1)) &&
269 !v->s.last_picture.f->data[0])
272 mx = s->mv[dir][n][0];
273 my = s->mv[dir][n][1];
276 if (v->field_mode && (v->cur_field_type != v->ref_field_type[dir]) && v->second_field) {
277 srcY = s->current_picture.f->data[0];
279 use_ic = *v->curr_use_ic;
281 srcY = s->last_picture.f->data[0];
283 use_ic = v->last_use_ic;
286 srcY = s->next_picture.f->data[0];
288 use_ic = v->next_use_ic;
292 av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
297 if (v->cur_field_type != v->ref_field_type[dir])
298 my = my - 2 + 4 * v->cur_field_type;
301 if (s->pict_type == AV_PICTURE_TYPE_P && n == 3 && v->field_mode) {
302 int same_count = 0, opp_count = 0, k;
303 int chosen_mv[2][4][2], f;
305 for (k = 0; k < 4; k++) {
306 f = v->mv_f[0][s->block_index[k] + v->blocks_off];
307 chosen_mv[f][f ? opp_count : same_count][0] = s->mv[0][k][0];
308 chosen_mv[f][f ? opp_count : same_count][1] = s->mv[0][k][1];
312 f = opp_count > same_count;
313 switch (f ? opp_count : same_count) {
315 tx = median4(chosen_mv[f][0][0], chosen_mv[f][1][0],
316 chosen_mv[f][2][0], chosen_mv[f][3][0]);
317 ty = median4(chosen_mv[f][0][1], chosen_mv[f][1][1],
318 chosen_mv[f][2][1], chosen_mv[f][3][1]);
321 tx = mid_pred(chosen_mv[f][0][0], chosen_mv[f][1][0], chosen_mv[f][2][0]);
322 ty = mid_pred(chosen_mv[f][0][1], chosen_mv[f][1][1], chosen_mv[f][2][1]);
325 tx = (chosen_mv[f][0][0] + chosen_mv[f][1][0]) / 2;
326 ty = (chosen_mv[f][0][1] + chosen_mv[f][1][1]) / 2;
331 s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = tx;
332 s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = ty;
333 for (k = 0; k < 4; k++)
334 v->mv_f[1][s->block_index[k] + v->blocks_off] = f;
337 if (v->fcm == ILACE_FRAME) { // not sure if needed for other types of picture
339 int width = s->avctx->coded_width;
340 int height = s->avctx->coded_height >> 1;
341 if (s->pict_type == AV_PICTURE_TYPE_P) {
342 s->current_picture.motion_val[1][s->block_index[n] + v->blocks_off][0] = mx;
343 s->current_picture.motion_val[1][s->block_index[n] + v->blocks_off][1] = my;
345 qx = (s->mb_x * 16) + (mx >> 2);
346 qy = (s->mb_y * 8) + (my >> 3);
351 mx -= 4 * (qx - width);
354 else if (qy > height + 1)
355 my -= 8 * (qy - height - 1);
358 if ((v->fcm == ILACE_FRAME) && fieldmv)
359 off = ((n > 1) ? s->linesize : 0) + (n & 1) * 8;
361 off = s->linesize * 4 * (n & 2) + (n & 1) * 8;
363 src_x = s->mb_x * 16 + (n & 1) * 8 + (mx >> 2);
365 src_y = s->mb_y * 16 + (n & 2) * 4 + (my >> 2);
367 src_y = s->mb_y * 16 + ((n > 1) ? 1 : 0) + (my >> 2);
369 if (v->profile != PROFILE_ADVANCED) {
370 src_x = av_clip(src_x, -16, s->mb_width * 16);
371 src_y = av_clip(src_y, -16, s->mb_height * 16);
373 src_x = av_clip(src_x, -17, s->avctx->coded_width);
374 if (v->fcm == ILACE_FRAME) {
376 src_y = av_clip(src_y, -17, s->avctx->coded_height + 1);
378 src_y = av_clip(src_y, -18, s->avctx->coded_height);
380 src_y = av_clip(src_y, -18, s->avctx->coded_height + 1);
384 srcY += src_y * s->linesize + src_x;
385 if (v->field_mode && v->ref_field_type[dir])
386 srcY += s->current_picture_ptr->f->linesize[0];
388 if (fieldmv && !(src_y & 1))
390 if (fieldmv && (src_y & 1) && src_y < 4)
392 if (v->rangeredfrm || use_ic
393 || s->h_edge_pos < 13 || v_edge_pos < 23
394 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx & 3) - 8 - s->mspel * 2
395 || (unsigned)(src_y - (s->mspel << fieldmv)) > v_edge_pos - (my & 3) - ((8 + s->mspel * 2) << fieldmv)) {
396 srcY -= s->mspel * (1 + (s->linesize << fieldmv));
397 /* check emulate edge stride and offset */
398 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
399 s->linesize, s->linesize,
400 9 + s->mspel * 2, (9 + s->mspel * 2) << fieldmv,
401 src_x - s->mspel, src_y - (s->mspel << fieldmv),
402 s->h_edge_pos, v_edge_pos);
403 srcY = s->edge_emu_buffer;
404 /* if we deal with range reduction we need to scale source blocks */
405 if (v->rangeredfrm) {
410 for (j = 0; j < 9 + s->mspel * 2; j++) {
411 for (i = 0; i < 9 + s->mspel * 2; i++)
412 src[i] = ((src[i] - 128) >> 1) + 128;
413 src += s->linesize << fieldmv;
416 /* if we deal with intensity compensation we need to scale source blocks */
422 for (j = 0; j < 9 + s->mspel * 2; j++) {
423 int f = v->field_mode ? v->ref_field_type[dir] : (((j<<fieldmv)+src_y - (s->mspel << fieldmv)) & 1);
424 for (i = 0; i < 9 + s->mspel * 2; i++)
425 src[i] = luty[f][src[i]];
426 src += s->linesize << fieldmv;
429 srcY += s->mspel * (1 + (s->linesize << fieldmv));
433 dxy = ((my & 3) << 2) | (mx & 3);
435 v->vc1dsp.avg_vc1_mspel_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
437 v->vc1dsp.put_vc1_mspel_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
438 } else { // hpel mc - always used for luma
439 dxy = (my & 2) | ((mx & 2) >> 1);
441 s->hdsp.put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
443 s->hdsp.put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
447 static av_always_inline int get_chroma_mv(int *mvx, int *mvy, int *a, int flag, int *tx, int *ty)
450 static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
452 idx = ((a[3] != flag) << 3)
453 | ((a[2] != flag) << 2)
454 | ((a[1] != flag) << 1)
457 *tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]);
458 *ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]);
460 } else if (count[idx] == 1) {
463 *tx = mid_pred(mvx[1], mvx[2], mvx[3]);
464 *ty = mid_pred(mvy[1], mvy[2], mvy[3]);
467 *tx = mid_pred(mvx[0], mvx[2], mvx[3]);
468 *ty = mid_pred(mvy[0], mvy[2], mvy[3]);
471 *tx = mid_pred(mvx[0], mvx[1], mvx[3]);
472 *ty = mid_pred(mvy[0], mvy[1], mvy[3]);
475 *tx = mid_pred(mvx[0], mvx[1], mvx[2]);
476 *ty = mid_pred(mvy[0], mvy[1], mvy[2]);
479 } else if (count[idx] == 2) {
481 for (i = 0; i < 3; i++)
486 for (i = t1 + 1; i < 4; i++)
491 *tx = (mvx[t1] + mvx[t2]) / 2;
492 *ty = (mvy[t1] + mvy[t2]) / 2;
500 /** Do motion compensation for 4-MV macroblock - both chroma blocks
502 void ff_vc1_mc_4mv_chroma(VC1Context *v, int dir)
504 MpegEncContext *s = &v->s;
505 H264ChromaContext *h264chroma = &v->h264chroma;
506 uint8_t *srcU, *srcV;
507 int uvmx, uvmy, uvsrc_x, uvsrc_y;
508 int k, tx = 0, ty = 0;
509 int mvx[4], mvy[4], intra[4], mv_f[4];
511 int chroma_ref_type = v->cur_field_type;
512 int v_edge_pos = s->v_edge_pos >> v->field_mode;
513 uint8_t (*lutuv)[256];
516 if (!v->field_mode && !v->s.last_picture.f->data[0])
518 if (s->flags & CODEC_FLAG_GRAY)
521 for (k = 0; k < 4; k++) {
522 mvx[k] = s->mv[dir][k][0];
523 mvy[k] = s->mv[dir][k][1];
524 intra[k] = v->mb_type[0][s->block_index[k]];
526 mv_f[k] = v->mv_f[dir][s->block_index[k] + v->blocks_off];
529 /* calculate chroma MV vector from four luma MVs */
530 if (!v->field_mode || (v->field_mode && !v->numref)) {
531 valid_count = get_chroma_mv(mvx, mvy, intra, 0, &tx, &ty);
532 chroma_ref_type = v->ref_field_type[dir];
534 s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
535 s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;
536 v->luma_mv[s->mb_x][0] = v->luma_mv[s->mb_x][1] = 0;
537 return; //no need to do MC for intra blocks
541 if (mv_f[0] + mv_f[1] + mv_f[2] + mv_f[3] > 2)
543 valid_count = get_chroma_mv(mvx, mvy, mv_f, dominant, &tx, &ty);
545 chroma_ref_type = !v->cur_field_type;
547 if (v->field_mode && chroma_ref_type == 1 && v->cur_field_type == 1 && !v->s.last_picture.f->data[0])
549 s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = tx;
550 s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = ty;
551 uvmx = (tx + ((tx & 3) == 3)) >> 1;
552 uvmy = (ty + ((ty & 3) == 3)) >> 1;
554 v->luma_mv[s->mb_x][0] = uvmx;
555 v->luma_mv[s->mb_x][1] = uvmy;
558 uvmx = uvmx + ((uvmx < 0) ? (uvmx & 1) : -(uvmx & 1));
559 uvmy = uvmy + ((uvmy < 0) ? (uvmy & 1) : -(uvmy & 1));
561 // Field conversion bias
562 if (v->cur_field_type != chroma_ref_type)
563 uvmy += 2 - 4 * chroma_ref_type;
565 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
566 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
568 if (v->profile != PROFILE_ADVANCED) {
569 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
570 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
572 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
573 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
577 if (v->field_mode && (v->cur_field_type != chroma_ref_type) && v->second_field) {
578 srcU = s->current_picture.f->data[1];
579 srcV = s->current_picture.f->data[2];
580 lutuv = v->curr_lutuv;
581 use_ic = *v->curr_use_ic;
583 srcU = s->last_picture.f->data[1];
584 srcV = s->last_picture.f->data[2];
585 lutuv = v->last_lutuv;
586 use_ic = v->last_use_ic;
589 srcU = s->next_picture.f->data[1];
590 srcV = s->next_picture.f->data[2];
591 lutuv = v->next_lutuv;
592 use_ic = v->next_use_ic;
596 av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
600 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
601 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
604 if (chroma_ref_type) {
605 srcU += s->current_picture_ptr->f->linesize[1];
606 srcV += s->current_picture_ptr->f->linesize[2];
610 if (v->rangeredfrm || use_ic
611 || s->h_edge_pos < 18 || v_edge_pos < 18
612 || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
613 || (unsigned)uvsrc_y > (v_edge_pos >> 1) - 9) {
614 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcU,
615 s->uvlinesize, s->uvlinesize,
616 8 + 1, 8 + 1, uvsrc_x, uvsrc_y,
617 s->h_edge_pos >> 1, v_edge_pos >> 1);
618 s->vdsp.emulated_edge_mc(s->edge_emu_buffer + 16, srcV,
619 s->uvlinesize, s->uvlinesize,
620 8 + 1, 8 + 1, uvsrc_x, uvsrc_y,
621 s->h_edge_pos >> 1, v_edge_pos >> 1);
622 srcU = s->edge_emu_buffer;
623 srcV = s->edge_emu_buffer + 16;
625 /* if we deal with range reduction we need to scale source blocks */
626 if (v->rangeredfrm) {
632 for (j = 0; j < 9; j++) {
633 for (i = 0; i < 9; i++) {
634 src[i] = ((src[i] - 128) >> 1) + 128;
635 src2[i] = ((src2[i] - 128) >> 1) + 128;
637 src += s->uvlinesize;
638 src2 += s->uvlinesize;
641 /* if we deal with intensity compensation we need to scale source blocks */
648 for (j = 0; j < 9; j++) {
649 int f = v->field_mode ? chroma_ref_type : ((j + uvsrc_y) & 1);
650 for (i = 0; i < 9; i++) {
651 src[i] = lutuv[f][src[i]];
652 src2[i] = lutuv[f][src2[i]];
654 src += s->uvlinesize;
655 src2 += s->uvlinesize;
660 /* Chroma MC always uses qpel bilinear */
661 uvmx = (uvmx & 3) << 1;
662 uvmy = (uvmy & 3) << 1;
664 h264chroma->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
665 h264chroma->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
667 v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
668 v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
672 /** Do motion compensation for 4-MV interlaced frame chroma macroblock (both U and V)
674 void ff_vc1_mc_4mv_chroma4(VC1Context *v, int dir, int dir2, int avg)
676 MpegEncContext *s = &v->s;
677 H264ChromaContext *h264chroma = &v->h264chroma;
678 uint8_t *srcU, *srcV;
679 int uvsrc_x, uvsrc_y;
680 int uvmx_field[4], uvmy_field[4];
682 int fieldmv = v->blk_mv_type[s->block_index[0]];
683 static const int s_rndtblfield[16] = { 0, 0, 1, 2, 4, 4, 5, 6, 2, 2, 3, 8, 6, 6, 7, 12 };
684 int v_dist = fieldmv ? 1 : 4; // vertical offset for lower sub-blocks
685 int v_edge_pos = s->v_edge_pos >> 1;
687 uint8_t (*lutuv)[256];
689 if (s->flags & CODEC_FLAG_GRAY)
692 for (i = 0; i < 4; i++) {
693 int d = i < 2 ? dir: dir2;
695 uvmx_field[i] = (tx + ((tx & 3) == 3)) >> 1;
698 uvmy_field[i] = (ty >> 4) * 8 + s_rndtblfield[ty & 0xF];
700 uvmy_field[i] = (ty + ((ty & 3) == 3)) >> 1;
703 for (i = 0; i < 4; i++) {
704 off = (i & 1) * 4 + ((i & 2) ? v_dist * s->uvlinesize : 0);
705 uvsrc_x = s->mb_x * 8 + (i & 1) * 4 + (uvmx_field[i] >> 2);
706 uvsrc_y = s->mb_y * 8 + ((i & 2) ? v_dist : 0) + (uvmy_field[i] >> 2);
707 // FIXME: implement proper pull-back (see vc1cropmv.c, vc1CROPMV_ChromaPullBack())
708 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
709 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
710 if (i < 2 ? dir : dir2) {
711 srcU = s->next_picture.f->data[1];
712 srcV = s->next_picture.f->data[2];
713 lutuv = v->next_lutuv;
714 use_ic = v->next_use_ic;
716 srcU = s->last_picture.f->data[1];
717 srcV = s->last_picture.f->data[2];
718 lutuv = v->last_lutuv;
719 use_ic = v->last_use_ic;
723 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
724 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
725 uvmx_field[i] = (uvmx_field[i] & 3) << 1;
726 uvmy_field[i] = (uvmy_field[i] & 3) << 1;
728 if (fieldmv && !(uvsrc_y & 1))
729 v_edge_pos = (s->v_edge_pos >> 1) - 1;
731 if (fieldmv && (uvsrc_y & 1) && uvsrc_y < 2)
734 || s->h_edge_pos < 10 || v_edge_pos < (5 << fieldmv)
735 || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 5
736 || (unsigned)uvsrc_y > v_edge_pos - (5 << fieldmv)) {
737 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcU,
738 s->uvlinesize, s->uvlinesize,
739 5, (5 << fieldmv), uvsrc_x, uvsrc_y,
740 s->h_edge_pos >> 1, v_edge_pos);
741 s->vdsp.emulated_edge_mc(s->edge_emu_buffer + 16, srcV,
742 s->uvlinesize, s->uvlinesize,
743 5, (5 << fieldmv), uvsrc_x, uvsrc_y,
744 s->h_edge_pos >> 1, v_edge_pos);
745 srcU = s->edge_emu_buffer;
746 srcV = s->edge_emu_buffer + 16;
748 /* if we deal with intensity compensation we need to scale source blocks */
755 for (j = 0; j < 5; j++) {
756 int f = (uvsrc_y + (j << fieldmv)) & 1;
757 for (i = 0; i < 5; i++) {
758 src[i] = lutuv[f][src[i]];
759 src2[i] = lutuv[f][src2[i]];
761 src += s->uvlinesize << fieldmv;
762 src2 += s->uvlinesize << fieldmv;
768 h264chroma->avg_h264_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
769 h264chroma->avg_h264_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
771 v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
772 v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
776 h264chroma->put_h264_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
777 h264chroma->put_h264_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
779 v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
780 v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
786 /** Motion compensation for direct or interpolated blocks in B-frames
788 void ff_vc1_interp_mc(VC1Context *v)
790 MpegEncContext *s = &v->s;
791 H264ChromaContext *h264chroma = &v->h264chroma;
792 uint8_t *srcY, *srcU, *srcV;
793 int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
795 int v_edge_pos = s->v_edge_pos >> v->field_mode;
796 int use_ic = v->next_use_ic;
798 if (!v->field_mode && !v->s.next_picture.f->data[0])
803 uvmx = (mx + ((mx & 3) == 3)) >> 1;
804 uvmy = (my + ((my & 3) == 3)) >> 1;
805 if (v->field_mode && v->cur_field_type != v->ref_field_type[1]) {
806 my = my - 2 + 4 * v->cur_field_type;
807 uvmy = uvmy - 2 + 4 * v->cur_field_type;
810 uvmx = uvmx + ((uvmx < 0) ? -(uvmx & 1) : (uvmx & 1));
811 uvmy = uvmy + ((uvmy < 0) ? -(uvmy & 1) : (uvmy & 1));
813 srcY = s->next_picture.f->data[0];
814 srcU = s->next_picture.f->data[1];
815 srcV = s->next_picture.f->data[2];
817 src_x = s->mb_x * 16 + (mx >> 2);
818 src_y = s->mb_y * 16 + (my >> 2);
819 uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
820 uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
822 if (v->profile != PROFILE_ADVANCED) {
823 src_x = av_clip( src_x, -16, s->mb_width * 16);
824 src_y = av_clip( src_y, -16, s->mb_height * 16);
825 uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
826 uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
828 src_x = av_clip( src_x, -17, s->avctx->coded_width);
829 src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
830 uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
831 uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
834 srcY += src_y * s->linesize + src_x;
835 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
836 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
838 if (v->field_mode && v->ref_field_type[1]) {
839 srcY += s->current_picture_ptr->f->linesize[0];
840 srcU += s->current_picture_ptr->f->linesize[1];
841 srcV += s->current_picture_ptr->f->linesize[2];
844 /* for grayscale we should not try to read from unknown area */
845 if (s->flags & CODEC_FLAG_GRAY) {
846 srcU = s->edge_emu_buffer + 18 * s->linesize;
847 srcV = s->edge_emu_buffer + 18 * s->linesize;
850 if (v->rangeredfrm || s->h_edge_pos < 22 || v_edge_pos < 22 || use_ic
851 || (unsigned)(src_x - 1) > s->h_edge_pos - (mx & 3) - 16 - 3
852 || (unsigned)(src_y - 1) > v_edge_pos - (my & 3) - 16 - 3) {
853 uint8_t *ubuf = s->edge_emu_buffer + 19 * s->linesize;
854 uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
856 srcY -= s->mspel * (1 + s->linesize);
857 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
858 s->linesize, s->linesize,
859 17 + s->mspel * 2, 17 + s->mspel * 2,
860 src_x - s->mspel, src_y - s->mspel,
861 s->h_edge_pos, v_edge_pos);
862 srcY = s->edge_emu_buffer;
863 s->vdsp.emulated_edge_mc(ubuf, srcU,
864 s->uvlinesize, s->uvlinesize,
867 s->h_edge_pos >> 1, v_edge_pos >> 1);
868 s->vdsp.emulated_edge_mc(vbuf, srcV,
869 s->uvlinesize, s->uvlinesize,
872 s->h_edge_pos >> 1, v_edge_pos >> 1);
875 /* if we deal with range reduction we need to scale source blocks */
876 if (v->rangeredfrm) {
881 for (j = 0; j < 17 + s->mspel * 2; j++) {
882 for (i = 0; i < 17 + s->mspel * 2; i++)
883 src[i] = ((src[i] - 128) >> 1) + 128;
888 for (j = 0; j < 9; j++) {
889 for (i = 0; i < 9; i++) {
890 src[i] = ((src[i] - 128) >> 1) + 128;
891 src2[i] = ((src2[i] - 128) >> 1) + 128;
893 src += s->uvlinesize;
894 src2 += s->uvlinesize;
899 uint8_t (*luty )[256] = v->next_luty;
900 uint8_t (*lutuv)[256] = v->next_lutuv;
905 for (j = 0; j < 17 + s->mspel * 2; j++) {
906 int f = v->field_mode ? v->ref_field_type[1] : ((j+src_y - s->mspel) & 1);
907 for (i = 0; i < 17 + s->mspel * 2; i++)
908 src[i] = luty[f][src[i]];
913 for (j = 0; j < 9; j++) {
914 int f = v->field_mode ? v->ref_field_type[1] : ((j+uvsrc_y) & 1);
915 for (i = 0; i < 9; i++) {
916 src[i] = lutuv[f][src[i]];
917 src2[i] = lutuv[f][src2[i]];
919 src += s->uvlinesize;
920 src2 += s->uvlinesize;
923 srcY += s->mspel * (1 + s->linesize);
930 dxy = ((my & 3) << 2) | (mx & 3);
931 v->vc1dsp.avg_vc1_mspel_pixels_tab[0][dxy](s->dest[0] + off , srcY , s->linesize, v->rnd);
933 dxy = (my & 2) | ((mx & 2) >> 1);
936 s->hdsp.avg_pixels_tab[0][dxy](s->dest[0] + off, srcY, s->linesize, 16);
938 s->hdsp.avg_no_rnd_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, 16);
941 if (s->flags & CODEC_FLAG_GRAY) return;
942 /* Chroma MC always uses qpel blilinear */
943 uvmx = (uvmx & 3) << 1;
944 uvmy = (uvmy & 3) << 1;
946 h264chroma->avg_h264_chroma_pixels_tab[0](s->dest[1] + off_uv, srcU, s->uvlinesize, 8, uvmx, uvmy);
947 h264chroma->avg_h264_chroma_pixels_tab[0](s->dest[2] + off_uv, srcV, s->uvlinesize, 8, uvmx, uvmy);
949 v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1] + off_uv, srcU, s->uvlinesize, 8, uvmx, uvmy);
950 v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2] + off_uv, srcV, s->uvlinesize, 8, uvmx, uvmy);