1 /*
2 * The simplest mpeg encoder (well, it was the simplest!)
3 * Copyright (c) 2000,2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
7 *
8 * This file is part of FFmpeg.
9 *
10 * FFmpeg is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * FFmpeg is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with FFmpeg; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 */
24
25 /**
26 * @file
27 * The simplest mpeg encoder (well, it was the simplest!).
28 */
29
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/internal.h"
34 #include "libavutil/motion_vector.h"
35 #include "avcodec.h"
36 #include "blockdsp.h"
37 #include "h264chroma.h"
38 #include "idctdsp.h"
39 #include "internal.h"
40 #include "mathops.h"
41 #include "mpeg_er.h"
42 #include "mpegutils.h"
43 #include "mpegvideo.h"
44 #include "mpegvideodata.h"
45 #include "mjpegenc.h"
46 #include "msmpeg4.h"
47 #include "qpeldsp.h"
48 #include "thread.h"
49 #include "wmv2.h"
50 #include <limits.h>
51
dct_unquantize_mpeg1_intra_c(MpegEncContext * s,int16_t * block,int n,int qscale)52 static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
53 int16_t *block, int n, int qscale)
54 {
55 int i, level, nCoeffs;
56 const uint16_t *quant_matrix;
57
58 nCoeffs= s->block_last_index[n];
59
60 block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
61 /* XXX: only MPEG-1 */
62 quant_matrix = s->intra_matrix;
63 for(i=1;i<=nCoeffs;i++) {
64 int j= s->intra_scantable.permutated[i];
65 level = block[j];
66 if (level) {
67 if (level < 0) {
68 level = -level;
69 level = (int)(level * qscale * quant_matrix[j]) >> 3;
70 level = (level - 1) | 1;
71 level = -level;
72 } else {
73 level = (int)(level * qscale * quant_matrix[j]) >> 3;
74 level = (level - 1) | 1;
75 }
76 block[j] = level;
77 }
78 }
79 }
80
dct_unquantize_mpeg1_inter_c(MpegEncContext * s,int16_t * block,int n,int qscale)81 static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
82 int16_t *block, int n, int qscale)
83 {
84 int i, level, nCoeffs;
85 const uint16_t *quant_matrix;
86
87 nCoeffs= s->block_last_index[n];
88
89 quant_matrix = s->inter_matrix;
90 for(i=0; i<=nCoeffs; i++) {
91 int j= s->intra_scantable.permutated[i];
92 level = block[j];
93 if (level) {
94 if (level < 0) {
95 level = -level;
96 level = (((level << 1) + 1) * qscale *
97 ((int) (quant_matrix[j]))) >> 4;
98 level = (level - 1) | 1;
99 level = -level;
100 } else {
101 level = (((level << 1) + 1) * qscale *
102 ((int) (quant_matrix[j]))) >> 4;
103 level = (level - 1) | 1;
104 }
105 block[j] = level;
106 }
107 }
108 }
109
dct_unquantize_mpeg2_intra_c(MpegEncContext * s,int16_t * block,int n,int qscale)110 static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
111 int16_t *block, int n, int qscale)
112 {
113 int i, level, nCoeffs;
114 const uint16_t *quant_matrix;
115
116 if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
117 else qscale <<= 1;
118
119 if(s->alternate_scan) nCoeffs= 63;
120 else nCoeffs= s->block_last_index[n];
121
122 block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
123 quant_matrix = s->intra_matrix;
124 for(i=1;i<=nCoeffs;i++) {
125 int j= s->intra_scantable.permutated[i];
126 level = block[j];
127 if (level) {
128 if (level < 0) {
129 level = -level;
130 level = (int)(level * qscale * quant_matrix[j]) >> 4;
131 level = -level;
132 } else {
133 level = (int)(level * qscale * quant_matrix[j]) >> 4;
134 }
135 block[j] = level;
136 }
137 }
138 }
139
dct_unquantize_mpeg2_intra_bitexact(MpegEncContext * s,int16_t * block,int n,int qscale)140 static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
141 int16_t *block, int n, int qscale)
142 {
143 int i, level, nCoeffs;
144 const uint16_t *quant_matrix;
145 int sum=-1;
146
147 if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
148 else qscale <<= 1;
149
150 if(s->alternate_scan) nCoeffs= 63;
151 else nCoeffs= s->block_last_index[n];
152
153 block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
154 sum += block[0];
155 quant_matrix = s->intra_matrix;
156 for(i=1;i<=nCoeffs;i++) {
157 int j= s->intra_scantable.permutated[i];
158 level = block[j];
159 if (level) {
160 if (level < 0) {
161 level = -level;
162 level = (int)(level * qscale * quant_matrix[j]) >> 4;
163 level = -level;
164 } else {
165 level = (int)(level * qscale * quant_matrix[j]) >> 4;
166 }
167 block[j] = level;
168 sum+=level;
169 }
170 }
171 block[63]^=sum&1;
172 }
173
dct_unquantize_mpeg2_inter_c(MpegEncContext * s,int16_t * block,int n,int qscale)174 static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
175 int16_t *block, int n, int qscale)
176 {
177 int i, level, nCoeffs;
178 const uint16_t *quant_matrix;
179 int sum=-1;
180
181 if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
182 else qscale <<= 1;
183
184 if(s->alternate_scan) nCoeffs= 63;
185 else nCoeffs= s->block_last_index[n];
186
187 quant_matrix = s->inter_matrix;
188 for(i=0; i<=nCoeffs; i++) {
189 int j= s->intra_scantable.permutated[i];
190 level = block[j];
191 if (level) {
192 if (level < 0) {
193 level = -level;
194 level = (((level << 1) + 1) * qscale *
195 ((int) (quant_matrix[j]))) >> 5;
196 level = -level;
197 } else {
198 level = (((level << 1) + 1) * qscale *
199 ((int) (quant_matrix[j]))) >> 5;
200 }
201 block[j] = level;
202 sum+=level;
203 }
204 }
205 block[63]^=sum&1;
206 }
207
dct_unquantize_h263_intra_c(MpegEncContext * s,int16_t * block,int n,int qscale)208 static void dct_unquantize_h263_intra_c(MpegEncContext *s,
209 int16_t *block, int n, int qscale)
210 {
211 int i, level, qmul, qadd;
212 int nCoeffs;
213
214 av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
215
216 qmul = qscale << 1;
217
218 if (!s->h263_aic) {
219 block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
220 qadd = (qscale - 1) | 1;
221 }else{
222 qadd = 0;
223 }
224 if(s->ac_pred)
225 nCoeffs=63;
226 else
227 nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
228
229 for(i=1; i<=nCoeffs; i++) {
230 level = block[i];
231 if (level) {
232 if (level < 0) {
233 level = level * qmul - qadd;
234 } else {
235 level = level * qmul + qadd;
236 }
237 block[i] = level;
238 }
239 }
240 }
241
dct_unquantize_h263_inter_c(MpegEncContext * s,int16_t * block,int n,int qscale)242 static void dct_unquantize_h263_inter_c(MpegEncContext *s,
243 int16_t *block, int n, int qscale)
244 {
245 int i, level, qmul, qadd;
246 int nCoeffs;
247
248 av_assert2(s->block_last_index[n]>=0);
249
250 qadd = (qscale - 1) | 1;
251 qmul = qscale << 1;
252
253 nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
254
255 for(i=0; i<=nCoeffs; i++) {
256 level = block[i];
257 if (level) {
258 if (level < 0) {
259 level = level * qmul - qadd;
260 } else {
261 level = level * qmul + qadd;
262 }
263 block[i] = level;
264 }
265 }
266 }
267
268
gray16(uint8_t * dst,const uint8_t * src,ptrdiff_t linesize,int h)269 static void gray16(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
270 {
271 while(h--)
272 memset(dst + h*linesize, 128, 16);
273 }
274
gray8(uint8_t * dst,const uint8_t * src,ptrdiff_t linesize,int h)275 static void gray8(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
276 {
277 while(h--)
278 memset(dst + h*linesize, 128, 8);
279 }
280
281 /* init common dct for both encoder and decoder */
dct_init(MpegEncContext * s)282 static av_cold int dct_init(MpegEncContext *s)
283 {
284 ff_blockdsp_init(&s->bdsp, s->avctx);
285 ff_h264chroma_init(&s->h264chroma, 8); //for lowres
286 ff_hpeldsp_init(&s->hdsp, s->avctx->flags);
287 ff_mpegvideodsp_init(&s->mdsp);
288 ff_videodsp_init(&s->vdsp, s->avctx->bits_per_raw_sample);
289
290 if (s->avctx->debug & FF_DEBUG_NOMC) {
291 int i;
292 for (i=0; i<4; i++) {
293 s->hdsp.avg_pixels_tab[0][i] = gray16;
294 s->hdsp.put_pixels_tab[0][i] = gray16;
295 s->hdsp.put_no_rnd_pixels_tab[0][i] = gray16;
296
297 s->hdsp.avg_pixels_tab[1][i] = gray8;
298 s->hdsp.put_pixels_tab[1][i] = gray8;
299 s->hdsp.put_no_rnd_pixels_tab[1][i] = gray8;
300 }
301 }
302
303 s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_c;
304 s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_c;
305 s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_c;
306 s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_c;
307 s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_c;
308 if (s->avctx->flags & AV_CODEC_FLAG_BITEXACT)
309 s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_bitexact;
310 s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_c;
311
312 if (HAVE_INTRINSICS_NEON)
313 ff_mpv_common_init_neon(s);
314
315 if (ARCH_ALPHA)
316 ff_mpv_common_init_axp(s);
317 if (ARCH_ARM)
318 ff_mpv_common_init_arm(s);
319 if (ARCH_PPC)
320 ff_mpv_common_init_ppc(s);
321 if (ARCH_X86)
322 ff_mpv_common_init_x86(s);
323 if (ARCH_MIPS)
324 ff_mpv_common_init_mips(s);
325
326 return 0;
327 }
328
ff_mpv_idct_init(MpegEncContext * s)329 av_cold void ff_mpv_idct_init(MpegEncContext *s)
330 {
331 if (s->codec_id == AV_CODEC_ID_MPEG4)
332 s->idsp.mpeg4_studio_profile = s->studio_profile;
333 ff_idctdsp_init(&s->idsp, s->avctx);
334
335 /* load & permutate scantables
336 * note: only wmv uses different ones
337 */
338 if (s->alternate_scan) {
339 ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan);
340 ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan);
341 } else {
342 ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct);
343 ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
344 }
345 ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan);
346 ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
347 }
348
alloc_picture(MpegEncContext * s,Picture * pic)349 static int alloc_picture(MpegEncContext *s, Picture *pic)
350 {
351 return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, 0, 0,
352 s->chroma_x_shift, s->chroma_y_shift, s->out_format,
353 s->mb_stride, s->mb_width, s->mb_height, s->b8_stride,
354 &s->linesize, &s->uvlinesize);
355 }
356
init_duplicate_context(MpegEncContext * s)357 static int init_duplicate_context(MpegEncContext *s)
358 {
359 int y_size = s->b8_stride * (2 * s->mb_height + 1);
360 int c_size = s->mb_stride * (s->mb_height + 1);
361 int yc_size = y_size + 2 * c_size;
362 int i;
363
364 if (s->mb_height & 1)
365 yc_size += 2*s->b8_stride + 2*s->mb_stride;
366
367 s->sc.edge_emu_buffer =
368 s->me.scratchpad =
369 s->me.temp =
370 s->sc.rd_scratchpad =
371 s->sc.b_scratchpad =
372 s->sc.obmc_scratchpad = NULL;
373
374 if (s->encoding) {
375 FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map,
376 ME_MAP_SIZE * sizeof(uint32_t), fail)
377 FF_ALLOCZ_OR_GOTO(s->avctx, s->me.score_map,
378 ME_MAP_SIZE * sizeof(uint32_t), fail)
379 if (s->noise_reduction) {
380 FF_ALLOCZ_OR_GOTO(s->avctx, s->dct_error_sum,
381 2 * 64 * sizeof(int), fail)
382 }
383 }
384 FF_ALLOCZ_OR_GOTO(s->avctx, s->blocks, 64 * 12 * 2 * sizeof(int16_t), fail)
385 s->block = s->blocks[0];
386
387 for (i = 0; i < 12; i++) {
388 s->pblocks[i] = &s->block[i];
389 }
390
391 FF_ALLOCZ_OR_GOTO(s->avctx, s->block32, sizeof(*s->block32), fail)
392 s->dpcm_direction = 0;
393 FF_ALLOCZ_OR_GOTO(s->avctx, s->dpcm_macroblock, sizeof(*s->dpcm_macroblock), fail)
394
395 if (s->avctx->codec_tag == AV_RL32("VCR2")) {
396 // exchange uv
397 FFSWAP(void *, s->pblocks[4], s->pblocks[5]);
398 }
399
400 if (s->out_format == FMT_H263) {
401 /* ac values */
402 FF_ALLOCZ_OR_GOTO(s->avctx, s->ac_val_base,
403 yc_size * sizeof(int16_t) * 16, fail);
404 s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
405 s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
406 s->ac_val[2] = s->ac_val[1] + c_size;
407 }
408
409 return 0;
410 fail:
411 return AVERROR(ENOMEM); // free() through ff_mpv_common_end()
412 }
413
free_duplicate_context(MpegEncContext * s)414 static void free_duplicate_context(MpegEncContext *s)
415 {
416 if (!s)
417 return;
418
419 av_freep(&s->sc.edge_emu_buffer);
420 av_freep(&s->me.scratchpad);
421 s->me.temp =
422 s->sc.rd_scratchpad =
423 s->sc.b_scratchpad =
424 s->sc.obmc_scratchpad = NULL;
425
426 av_freep(&s->dct_error_sum);
427 av_freep(&s->me.map);
428 av_freep(&s->me.score_map);
429 av_freep(&s->blocks);
430 av_freep(&s->block32);
431 av_freep(&s->dpcm_macroblock);
432 av_freep(&s->ac_val_base);
433 s->block = NULL;
434 }
435
backup_duplicate_context(MpegEncContext * bak,MpegEncContext * src)436 static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
437 {
438 #define COPY(a) bak->a = src->a
439 COPY(sc.edge_emu_buffer);
440 COPY(me.scratchpad);
441 COPY(me.temp);
442 COPY(sc.rd_scratchpad);
443 COPY(sc.b_scratchpad);
444 COPY(sc.obmc_scratchpad);
445 COPY(me.map);
446 COPY(me.score_map);
447 COPY(blocks);
448 COPY(block);
449 COPY(block32);
450 COPY(dpcm_macroblock);
451 COPY(dpcm_direction);
452 COPY(start_mb_y);
453 COPY(end_mb_y);
454 COPY(me.map_generation);
455 COPY(pb);
456 COPY(dct_error_sum);
457 COPY(dct_count[0]);
458 COPY(dct_count[1]);
459 COPY(ac_val_base);
460 COPY(ac_val[0]);
461 COPY(ac_val[1]);
462 COPY(ac_val[2]);
463 #undef COPY
464 }
465
ff_update_duplicate_context(MpegEncContext * dst,MpegEncContext * src)466 int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
467 {
468 MpegEncContext bak;
469 int i, ret;
470 // FIXME copy only needed parts
471 backup_duplicate_context(&bak, dst);
472 memcpy(dst, src, sizeof(MpegEncContext));
473 backup_duplicate_context(dst, &bak);
474 for (i = 0; i < 12; i++) {
475 dst->pblocks[i] = &dst->block[i];
476 }
477 if (dst->avctx->codec_tag == AV_RL32("VCR2")) {
478 // exchange uv
479 FFSWAP(void *, dst->pblocks[4], dst->pblocks[5]);
480 }
481 if (!dst->sc.edge_emu_buffer &&
482 (ret = ff_mpeg_framesize_alloc(dst->avctx, &dst->me,
483 &dst->sc, dst->linesize)) < 0) {
484 av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
485 "scratch buffers.\n");
486 return ret;
487 }
488 return 0;
489 }
490
ff_mpeg_update_thread_context(AVCodecContext * dst,const AVCodecContext * src)491 int ff_mpeg_update_thread_context(AVCodecContext *dst,
492 const AVCodecContext *src)
493 {
494 int i, ret;
495 MpegEncContext *s = dst->priv_data, *s1 = src->priv_data;
496
497 if (dst == src)
498 return 0;
499
500 av_assert0(s != s1);
501
502 // FIXME can parameters change on I-frames?
503 // in that case dst may need a reinit
504 if (!s->context_initialized) {
505 int err;
506 memcpy(s, s1, sizeof(MpegEncContext));
507
508 s->avctx = dst;
509 s->bitstream_buffer = NULL;
510 s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
511
512 if (s1->context_initialized){
513 // s->picture_range_start += MAX_PICTURE_COUNT;
514 // s->picture_range_end += MAX_PICTURE_COUNT;
515 ff_mpv_idct_init(s);
516 if((err = ff_mpv_common_init(s)) < 0){
517 memset(s, 0, sizeof(MpegEncContext));
518 s->avctx = dst;
519 return err;
520 }
521 }
522 }
523
524 if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
525 s->context_reinit = 0;
526 s->height = s1->height;
527 s->width = s1->width;
528 if ((ret = ff_mpv_common_frame_size_change(s)) < 0)
529 return ret;
530 }
531
532 s->avctx->coded_height = s1->avctx->coded_height;
533 s->avctx->coded_width = s1->avctx->coded_width;
534 s->avctx->width = s1->avctx->width;
535 s->avctx->height = s1->avctx->height;
536
537 s->quarter_sample = s1->quarter_sample;
538
539 s->coded_picture_number = s1->coded_picture_number;
540 s->picture_number = s1->picture_number;
541
542 av_assert0(!s->picture || s->picture != s1->picture);
543 if(s->picture)
544 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
545 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
546 if (s1->picture && s1->picture[i].f->buf[0] &&
547 (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
548 return ret;
549 }
550
551 #define UPDATE_PICTURE(pic)\
552 do {\
553 ff_mpeg_unref_picture(s->avctx, &s->pic);\
554 if (s1->pic.f && s1->pic.f->buf[0])\
555 ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
556 else\
557 ret = ff_update_picture_tables(&s->pic, &s1->pic);\
558 if (ret < 0)\
559 return ret;\
560 } while (0)
561
562 UPDATE_PICTURE(current_picture);
563 UPDATE_PICTURE(last_picture);
564 UPDATE_PICTURE(next_picture);
565
566 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
567 ((pic && pic >= old_ctx->picture && \
568 pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
569 &new_ctx->picture[pic - old_ctx->picture] : NULL)
570
571 s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1);
572 s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
573 s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1);
574
575 // Error/bug resilience
576 s->next_p_frame_damaged = s1->next_p_frame_damaged;
577 s->workaround_bugs = s1->workaround_bugs;
578 s->padding_bug_score = s1->padding_bug_score;
579
580 // MPEG-4 timing info
581 memcpy(&s->last_time_base, &s1->last_time_base,
582 (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
583 (char *) &s1->last_time_base);
584
585 // B-frame info
586 s->max_b_frames = s1->max_b_frames;
587 s->low_delay = s1->low_delay;
588 s->droppable = s1->droppable;
589
590 // DivX handling (doesn't work)
591 s->divx_packed = s1->divx_packed;
592
593 if (s1->bitstream_buffer) {
594 if (s1->bitstream_buffer_size +
595 AV_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size) {
596 av_fast_malloc(&s->bitstream_buffer,
597 &s->allocated_bitstream_buffer_size,
598 s1->allocated_bitstream_buffer_size);
599 if (!s->bitstream_buffer) {
600 s->bitstream_buffer_size = 0;
601 return AVERROR(ENOMEM);
602 }
603 }
604 s->bitstream_buffer_size = s1->bitstream_buffer_size;
605 memcpy(s->bitstream_buffer, s1->bitstream_buffer,
606 s1->bitstream_buffer_size);
607 memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
608 AV_INPUT_BUFFER_PADDING_SIZE);
609 }
610
611 // linesize-dependent scratch buffer allocation
612 if (!s->sc.edge_emu_buffer)
613 if (s1->linesize) {
614 if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
615 &s->sc, s1->linesize) < 0) {
616 av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
617 "scratch buffers.\n");
618 return AVERROR(ENOMEM);
619 }
620 } else {
621 av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
622 "be allocated due to unknown size.\n");
623 }
624
625 // MPEG-2/interlacing info
626 memcpy(&s->progressive_sequence, &s1->progressive_sequence,
627 (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
628
629 if (!s1->first_field) {
630 s->last_pict_type = s1->pict_type;
631 if (s1->current_picture_ptr)
632 s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f->quality;
633 }
634
635 return 0;
636 }
637
638 /**
639 * Set the given MpegEncContext to common defaults
640 * (same for encoding and decoding).
641 * The changed fields will not depend upon the
642 * prior state of the MpegEncContext.
643 */
ff_mpv_common_defaults(MpegEncContext * s)644 void ff_mpv_common_defaults(MpegEncContext *s)
645 {
646 s->y_dc_scale_table =
647 s->c_dc_scale_table = ff_mpeg1_dc_scale_table;
648 s->chroma_qscale_table = ff_default_chroma_qscale_table;
649 s->progressive_frame = 1;
650 s->progressive_sequence = 1;
651 s->picture_structure = PICT_FRAME;
652
653 s->coded_picture_number = 0;
654 s->picture_number = 0;
655
656 s->f_code = 1;
657 s->b_code = 1;
658
659 s->slice_context_count = 1;
660 }
661
662 /**
663 * Set the given MpegEncContext to defaults for decoding.
664 * the changed fields will not depend upon
665 * the prior state of the MpegEncContext.
666 */
ff_mpv_decode_defaults(MpegEncContext * s)667 void ff_mpv_decode_defaults(MpegEncContext *s)
668 {
669 ff_mpv_common_defaults(s);
670 }
671
ff_mpv_decode_init(MpegEncContext * s,AVCodecContext * avctx)672 void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
673 {
674 s->avctx = avctx;
675 s->width = avctx->coded_width;
676 s->height = avctx->coded_height;
677 s->codec_id = avctx->codec->id;
678 s->workaround_bugs = avctx->workaround_bugs;
679
680 /* convert fourcc to upper case */
681 s->codec_tag = avpriv_toupper4(avctx->codec_tag);
682 }
683
684 /**
685 * Initialize and allocates MpegEncContext fields dependent on the resolution.
686 */
init_context_frame(MpegEncContext * s)687 static int init_context_frame(MpegEncContext *s)
688 {
689 int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
690
691 s->mb_width = (s->width + 15) / 16;
692 s->mb_stride = s->mb_width + 1;
693 s->b8_stride = s->mb_width * 2 + 1;
694 mb_array_size = s->mb_height * s->mb_stride;
695 mv_table_size = (s->mb_height + 2) * s->mb_stride + 1;
696
697 /* set default edge pos, will be overridden
698 * in decode_header if needed */
699 s->h_edge_pos = s->mb_width * 16;
700 s->v_edge_pos = s->mb_height * 16;
701
702 s->mb_num = s->mb_width * s->mb_height;
703
704 s->block_wrap[0] =
705 s->block_wrap[1] =
706 s->block_wrap[2] =
707 s->block_wrap[3] = s->b8_stride;
708 s->block_wrap[4] =
709 s->block_wrap[5] = s->mb_stride;
710
711 y_size = s->b8_stride * (2 * s->mb_height + 1);
712 c_size = s->mb_stride * (s->mb_height + 1);
713 yc_size = y_size + 2 * c_size;
714
715 if (s->mb_height & 1)
716 yc_size += 2*s->b8_stride + 2*s->mb_stride;
717
718 FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num + 1) * sizeof(int),
719 fail); // error resilience code looks cleaner with this
720 for (y = 0; y < s->mb_height; y++)
721 for (x = 0; x < s->mb_width; x++)
722 s->mb_index2xy[x + y * s->mb_width] = x + y * s->mb_stride;
723
724 s->mb_index2xy[s->mb_height * s->mb_width] = (s->mb_height - 1) * s->mb_stride + s->mb_width; // FIXME really needed?
725
726 if (s->encoding) {
727 /* Allocate MV tables */
728 FF_ALLOCZ_OR_GOTO(s->avctx, s->p_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
729 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
730 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
731 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
732 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
733 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_direct_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
734 s->p_mv_table = s->p_mv_table_base + s->mb_stride + 1;
735 s->b_forw_mv_table = s->b_forw_mv_table_base + s->mb_stride + 1;
736 s->b_back_mv_table = s->b_back_mv_table_base + s->mb_stride + 1;
737 s->b_bidir_forw_mv_table = s->b_bidir_forw_mv_table_base + s->mb_stride + 1;
738 s->b_bidir_back_mv_table = s->b_bidir_back_mv_table_base + s->mb_stride + 1;
739 s->b_direct_mv_table = s->b_direct_mv_table_base + s->mb_stride + 1;
740
741 /* Allocate MB type table */
742 FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_type, mb_array_size * sizeof(uint16_t), fail) // needed for encoding
743
744 FF_ALLOCZ_OR_GOTO(s->avctx, s->lambda_table, mb_array_size * sizeof(int), fail)
745
746 FF_ALLOC_OR_GOTO(s->avctx, s->cplx_tab,
747 mb_array_size * sizeof(float), fail);
748 FF_ALLOC_OR_GOTO(s->avctx, s->bits_tab,
749 mb_array_size * sizeof(float), fail);
750
751 }
752
753 if (s->codec_id == AV_CODEC_ID_MPEG4 ||
754 (s->avctx->flags & AV_CODEC_FLAG_INTERLACED_ME)) {
755 /* interlaced direct mode decoding tables */
756 for (i = 0; i < 2; i++) {
757 int j, k;
758 for (j = 0; j < 2; j++) {
759 for (k = 0; k < 2; k++) {
760 FF_ALLOCZ_OR_GOTO(s->avctx,
761 s->b_field_mv_table_base[i][j][k],
762 mv_table_size * 2 * sizeof(int16_t),
763 fail);
764 s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] +
765 s->mb_stride + 1;
766 }
767 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_select_table [i][j], mb_array_size * 2 * sizeof(uint8_t), fail)
768 FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_mv_table_base[i][j], mv_table_size * 2 * sizeof(int16_t), fail)
769 s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j] + s->mb_stride + 1;
770 }
771 FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_select_table[i], mb_array_size * 2 * sizeof(uint8_t), fail)
772 }
773 }
774 if (s->out_format == FMT_H263) {
775 /* cbp values */
776 FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size + (s->mb_height&1)*2*s->b8_stride, fail);
777 s->coded_block = s->coded_block_base + s->b8_stride + 1;
778
779 /* cbp, ac_pred, pred_dir */
780 FF_ALLOCZ_OR_GOTO(s->avctx, s->cbp_table , mb_array_size * sizeof(uint8_t), fail);
781 FF_ALLOCZ_OR_GOTO(s->avctx, s->pred_dir_table, mb_array_size * sizeof(uint8_t), fail);
782 }
783
784 if (s->h263_pred || s->h263_plus || !s->encoding) {
785 /* dc values */
786 // MN: we need these for error resilience of intra-frames
787 FF_ALLOCZ_OR_GOTO(s->avctx, s->dc_val_base, yc_size * sizeof(int16_t), fail);
788 s->dc_val[0] = s->dc_val_base + s->b8_stride + 1;
789 s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1;
790 s->dc_val[2] = s->dc_val[1] + c_size;
791 for (i = 0; i < yc_size; i++)
792 s->dc_val_base[i] = 1024;
793 }
794
795 /* which mb is an intra block */
796 FF_ALLOCZ_OR_GOTO(s->avctx, s->mbintra_table, mb_array_size, fail);
797 memset(s->mbintra_table, 1, mb_array_size);
798
799 /* init macroblock skip table */
800 FF_ALLOCZ_OR_GOTO(s->avctx, s->mbskip_table, mb_array_size + 2, fail);
801 // Note the + 1 is for a quicker MPEG-4 slice_end detection
802
803 return ff_mpeg_er_init(s);
804 fail:
805 return AVERROR(ENOMEM);
806 }
807
clear_context(MpegEncContext * s)808 static void clear_context(MpegEncContext *s)
809 {
810 int i, j, k;
811
812 memset(&s->next_picture, 0, sizeof(s->next_picture));
813 memset(&s->last_picture, 0, sizeof(s->last_picture));
814 memset(&s->current_picture, 0, sizeof(s->current_picture));
815 memset(&s->new_picture, 0, sizeof(s->new_picture));
816
817 memset(s->thread_context, 0, sizeof(s->thread_context));
818
819 s->me.map = NULL;
820 s->me.score_map = NULL;
821 s->dct_error_sum = NULL;
822 s->block = NULL;
823 s->blocks = NULL;
824 s->block32 = NULL;
825 memset(s->pblocks, 0, sizeof(s->pblocks));
826 s->dpcm_direction = 0;
827 s->dpcm_macroblock = NULL;
828 s->ac_val_base = NULL;
829 s->ac_val[0] =
830 s->ac_val[1] =
831 s->ac_val[2] =NULL;
832 s->sc.edge_emu_buffer = NULL;
833 s->me.scratchpad = NULL;
834 s->me.temp =
835 s->sc.rd_scratchpad =
836 s->sc.b_scratchpad =
837 s->sc.obmc_scratchpad = NULL;
838
839
840 s->bitstream_buffer = NULL;
841 s->allocated_bitstream_buffer_size = 0;
842 s->picture = NULL;
843 s->mb_type = NULL;
844 s->p_mv_table_base = NULL;
845 s->b_forw_mv_table_base = NULL;
846 s->b_back_mv_table_base = NULL;
847 s->b_bidir_forw_mv_table_base = NULL;
848 s->b_bidir_back_mv_table_base = NULL;
849 s->b_direct_mv_table_base = NULL;
850 s->p_mv_table = NULL;
851 s->b_forw_mv_table = NULL;
852 s->b_back_mv_table = NULL;
853 s->b_bidir_forw_mv_table = NULL;
854 s->b_bidir_back_mv_table = NULL;
855 s->b_direct_mv_table = NULL;
856 for (i = 0; i < 2; i++) {
857 for (j = 0; j < 2; j++) {
858 for (k = 0; k < 2; k++) {
859 s->b_field_mv_table_base[i][j][k] = NULL;
860 s->b_field_mv_table[i][j][k] = NULL;
861 }
862 s->b_field_select_table[i][j] = NULL;
863 s->p_field_mv_table_base[i][j] = NULL;
864 s->p_field_mv_table[i][j] = NULL;
865 }
866 s->p_field_select_table[i] = NULL;
867 }
868
869 s->dc_val_base = NULL;
870 s->coded_block_base = NULL;
871 s->mbintra_table = NULL;
872 s->cbp_table = NULL;
873 s->pred_dir_table = NULL;
874
875 s->mbskip_table = NULL;
876
877 s->er.error_status_table = NULL;
878 s->er.er_temp_buffer = NULL;
879 s->mb_index2xy = NULL;
880 s->lambda_table = NULL;
881
882 s->cplx_tab = NULL;
883 s->bits_tab = NULL;
884 }
885
886 /**
887 * init common structure for both encoder and decoder.
888 * this assumes that some variables like width/height are already set
889 */
ff_mpv_common_init(MpegEncContext * s)890 av_cold int ff_mpv_common_init(MpegEncContext *s)
891 {
892 int i, ret;
893 int nb_slices = (HAVE_THREADS &&
894 s->avctx->active_thread_type & FF_THREAD_SLICE) ?
895 s->avctx->thread_count : 1;
896
897 clear_context(s);
898
899 if (s->encoding && s->avctx->slices)
900 nb_slices = s->avctx->slices;
901
902 if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
903 s->mb_height = (s->height + 31) / 32 * 2;
904 else
905 s->mb_height = (s->height + 15) / 16;
906
907 if (s->avctx->pix_fmt == AV_PIX_FMT_NONE) {
908 av_log(s->avctx, AV_LOG_ERROR,
909 "decoding to AV_PIX_FMT_NONE is not supported.\n");
910 return AVERROR(EINVAL);
911 }
912
913 if (nb_slices > MAX_THREADS || (nb_slices > s->mb_height && s->mb_height)) {
914 int max_slices;
915 if (s->mb_height)
916 max_slices = FFMIN(MAX_THREADS, s->mb_height);
917 else
918 max_slices = MAX_THREADS;
919 av_log(s->avctx, AV_LOG_WARNING, "too many threads/slices (%d),"
920 " reducing to %d\n", nb_slices, max_slices);
921 nb_slices = max_slices;
922 }
923
924 if ((s->width || s->height) &&
925 av_image_check_size(s->width, s->height, 0, s->avctx))
926 return AVERROR(EINVAL);
927
928 dct_init(s);
929
930 /* set chroma shifts */
931 ret = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
932 &s->chroma_x_shift,
933 &s->chroma_y_shift);
934 if (ret)
935 return ret;
936
937 FF_ALLOCZ_OR_GOTO(s->avctx, s->picture,
938 MAX_PICTURE_COUNT * sizeof(Picture), fail_nomem);
939 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
940 s->picture[i].f = av_frame_alloc();
941 if (!s->picture[i].f)
942 goto fail_nomem;
943 }
944 s->next_picture.f = av_frame_alloc();
945 if (!s->next_picture.f)
946 goto fail_nomem;
947 s->last_picture.f = av_frame_alloc();
948 if (!s->last_picture.f)
949 goto fail_nomem;
950 s->current_picture.f = av_frame_alloc();
951 if (!s->current_picture.f)
952 goto fail_nomem;
953 s->new_picture.f = av_frame_alloc();
954 if (!s->new_picture.f)
955 goto fail_nomem;
956
957 if ((ret = init_context_frame(s)))
958 goto fail_nomem;
959
960 s->parse_context.state = -1;
961
962 s->context_initialized = 1;
963 memset(s->thread_context, 0, sizeof(s->thread_context));
964 s->thread_context[0] = s;
965
966 // if (s->width && s->height) {
967 if (nb_slices > 1) {
968 for (i = 0; i < nb_slices; i++) {
969 if (i) {
970 s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
971 if (!s->thread_context[i])
972 goto fail_nomem;
973 }
974 if ((ret = init_duplicate_context(s->thread_context[i])) < 0)
975 goto fail;
976 s->thread_context[i]->start_mb_y =
977 (s->mb_height * (i) + nb_slices / 2) / nb_slices;
978 s->thread_context[i]->end_mb_y =
979 (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
980 }
981 } else {
982 if ((ret = init_duplicate_context(s)) < 0)
983 goto fail;
984 s->start_mb_y = 0;
985 s->end_mb_y = s->mb_height;
986 }
987 s->slice_context_count = nb_slices;
988 // }
989
990 return 0;
991 fail_nomem:
992 ret = AVERROR(ENOMEM);
993 fail:
994 ff_mpv_common_end(s);
995 return ret;
996 }
997
998 /**
999 * Frees and resets MpegEncContext fields depending on the resolution.
1000 * Is used during resolution changes to avoid a full reinitialization of the
1001 * codec.
1002 */
free_context_frame(MpegEncContext * s)1003 static void free_context_frame(MpegEncContext *s)
1004 {
1005 int i, j, k;
1006
1007 av_freep(&s->mb_type);
1008 av_freep(&s->p_mv_table_base);
1009 av_freep(&s->b_forw_mv_table_base);
1010 av_freep(&s->b_back_mv_table_base);
1011 av_freep(&s->b_bidir_forw_mv_table_base);
1012 av_freep(&s->b_bidir_back_mv_table_base);
1013 av_freep(&s->b_direct_mv_table_base);
1014 s->p_mv_table = NULL;
1015 s->b_forw_mv_table = NULL;
1016 s->b_back_mv_table = NULL;
1017 s->b_bidir_forw_mv_table = NULL;
1018 s->b_bidir_back_mv_table = NULL;
1019 s->b_direct_mv_table = NULL;
1020 for (i = 0; i < 2; i++) {
1021 for (j = 0; j < 2; j++) {
1022 for (k = 0; k < 2; k++) {
1023 av_freep(&s->b_field_mv_table_base[i][j][k]);
1024 s->b_field_mv_table[i][j][k] = NULL;
1025 }
1026 av_freep(&s->b_field_select_table[i][j]);
1027 av_freep(&s->p_field_mv_table_base[i][j]);
1028 s->p_field_mv_table[i][j] = NULL;
1029 }
1030 av_freep(&s->p_field_select_table[i]);
1031 }
1032
1033 av_freep(&s->dc_val_base);
1034 av_freep(&s->coded_block_base);
1035 av_freep(&s->mbintra_table);
1036 av_freep(&s->cbp_table);
1037 av_freep(&s->pred_dir_table);
1038
1039 av_freep(&s->mbskip_table);
1040
1041 av_freep(&s->er.error_status_table);
1042 av_freep(&s->er.er_temp_buffer);
1043 av_freep(&s->mb_index2xy);
1044 av_freep(&s->lambda_table);
1045
1046 av_freep(&s->cplx_tab);
1047 av_freep(&s->bits_tab);
1048
1049 s->linesize = s->uvlinesize = 0;
1050 }
1051
ff_mpv_common_frame_size_change(MpegEncContext * s)1052 int ff_mpv_common_frame_size_change(MpegEncContext *s)
1053 {
1054 int i, err = 0;
1055
1056 if (!s->context_initialized)
1057 return AVERROR(EINVAL);
1058
1059 if (s->slice_context_count > 1) {
1060 for (i = 0; i < s->slice_context_count; i++) {
1061 free_duplicate_context(s->thread_context[i]);
1062 }
1063 for (i = 1; i < s->slice_context_count; i++) {
1064 av_freep(&s->thread_context[i]);
1065 }
1066 } else
1067 free_duplicate_context(s);
1068
1069 free_context_frame(s);
1070
1071 if (s->picture)
1072 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1073 s->picture[i].needs_realloc = 1;
1074 }
1075
1076 s->last_picture_ptr =
1077 s->next_picture_ptr =
1078 s->current_picture_ptr = NULL;
1079
1080 // init
1081 if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
1082 s->mb_height = (s->height + 31) / 32 * 2;
1083 else
1084 s->mb_height = (s->height + 15) / 16;
1085
1086 if ((s->width || s->height) &&
1087 (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
1088 goto fail;
1089
1090 if ((err = init_context_frame(s)))
1091 goto fail;
1092
1093 memset(s->thread_context, 0, sizeof(s->thread_context));
1094 s->thread_context[0] = s;
1095
1096 if (s->width && s->height) {
1097 int nb_slices = s->slice_context_count;
1098 if (nb_slices > 1) {
1099 for (i = 0; i < nb_slices; i++) {
1100 if (i) {
1101 s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
1102 if (!s->thread_context[i]) {
1103 err = AVERROR(ENOMEM);
1104 goto fail;
1105 }
1106 }
1107 if ((err = init_duplicate_context(s->thread_context[i])) < 0)
1108 goto fail;
1109 s->thread_context[i]->start_mb_y =
1110 (s->mb_height * (i) + nb_slices / 2) / nb_slices;
1111 s->thread_context[i]->end_mb_y =
1112 (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
1113 }
1114 } else {
1115 err = init_duplicate_context(s);
1116 if (err < 0)
1117 goto fail;
1118 s->start_mb_y = 0;
1119 s->end_mb_y = s->mb_height;
1120 }
1121 s->slice_context_count = nb_slices;
1122 }
1123
1124 return 0;
1125 fail:
1126 ff_mpv_common_end(s);
1127 return err;
1128 }
1129
1130 /* init common structure for both encoder and decoder */
ff_mpv_common_end(MpegEncContext * s)1131 void ff_mpv_common_end(MpegEncContext *s)
1132 {
1133 int i;
1134
1135 if (!s)
1136 return ;
1137
1138 if (s->slice_context_count > 1) {
1139 for (i = 0; i < s->slice_context_count; i++) {
1140 free_duplicate_context(s->thread_context[i]);
1141 }
1142 for (i = 1; i < s->slice_context_count; i++) {
1143 av_freep(&s->thread_context[i]);
1144 }
1145 s->slice_context_count = 1;
1146 } else free_duplicate_context(s);
1147
1148 av_freep(&s->parse_context.buffer);
1149 s->parse_context.buffer_size = 0;
1150
1151 av_freep(&s->bitstream_buffer);
1152 s->allocated_bitstream_buffer_size = 0;
1153
1154 if (s->picture) {
1155 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1156 ff_free_picture_tables(&s->picture[i]);
1157 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1158 av_frame_free(&s->picture[i].f);
1159 }
1160 }
1161 av_freep(&s->picture);
1162 ff_free_picture_tables(&s->last_picture);
1163 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
1164 av_frame_free(&s->last_picture.f);
1165 ff_free_picture_tables(&s->current_picture);
1166 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
1167 av_frame_free(&s->current_picture.f);
1168 ff_free_picture_tables(&s->next_picture);
1169 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
1170 av_frame_free(&s->next_picture.f);
1171 ff_free_picture_tables(&s->new_picture);
1172 ff_mpeg_unref_picture(s->avctx, &s->new_picture);
1173 av_frame_free(&s->new_picture.f);
1174
1175 free_context_frame(s);
1176
1177 s->context_initialized = 0;
1178 s->last_picture_ptr =
1179 s->next_picture_ptr =
1180 s->current_picture_ptr = NULL;
1181 s->linesize = s->uvlinesize = 0;
1182 }
1183
1184
gray_frame(AVFrame * frame)1185 static void gray_frame(AVFrame *frame)
1186 {
1187 int i, h_chroma_shift, v_chroma_shift;
1188
1189 av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift);
1190
1191 for(i=0; i<frame->height; i++)
1192 memset(frame->data[0] + frame->linesize[0]*i, 0x80, frame->width);
1193 for(i=0; i<AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) {
1194 memset(frame->data[1] + frame->linesize[1]*i,
1195 0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1196 memset(frame->data[2] + frame->linesize[2]*i,
1197 0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1198 }
1199 }
1200
1201 /**
1202 * generic function called after decoding
1203 * the header and before a frame is decoded.
1204 */
ff_mpv_frame_start(MpegEncContext * s,AVCodecContext * avctx)1205 int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
1206 {
1207 int i, ret;
1208 Picture *pic;
1209 s->mb_skipped = 0;
1210
1211 if (!ff_thread_can_start_frame(avctx)) {
1212 av_log(avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
1213 return -1;
1214 }
1215
1216 /* mark & release old frames */
1217 if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
1218 s->last_picture_ptr != s->next_picture_ptr &&
1219 s->last_picture_ptr->f->buf[0]) {
1220 ff_mpeg_unref_picture(s->avctx, s->last_picture_ptr);
1221 }
1222
1223 /* release forgotten pictures */
1224 /* if (MPEG-124 / H.263) */
1225 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1226 if (&s->picture[i] != s->last_picture_ptr &&
1227 &s->picture[i] != s->next_picture_ptr &&
1228 s->picture[i].reference && !s->picture[i].needs_realloc) {
1229 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1230 }
1231 }
1232
1233 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
1234 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
1235 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
1236
1237 /* release non reference frames */
1238 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1239 if (!s->picture[i].reference)
1240 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1241 }
1242
1243 if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
1244 // we already have an unused image
1245 // (maybe it was set before reading the header)
1246 pic = s->current_picture_ptr;
1247 } else {
1248 i = ff_find_unused_picture(s->avctx, s->picture, 0);
1249 if (i < 0) {
1250 av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1251 return i;
1252 }
1253 pic = &s->picture[i];
1254 }
1255
1256 pic->reference = 0;
1257 if (!s->droppable) {
1258 if (s->pict_type != AV_PICTURE_TYPE_B)
1259 pic->reference = 3;
1260 }
1261
1262 pic->f->coded_picture_number = s->coded_picture_number++;
1263
1264 if (alloc_picture(s, pic) < 0)
1265 return -1;
1266
1267 s->current_picture_ptr = pic;
1268 // FIXME use only the vars from current_pic
1269 s->current_picture_ptr->f->top_field_first = s->top_field_first;
1270 if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
1271 s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1272 if (s->picture_structure != PICT_FRAME)
1273 s->current_picture_ptr->f->top_field_first =
1274 (s->picture_structure == PICT_TOP_FIELD) == s->first_field;
1275 }
1276 s->current_picture_ptr->f->interlaced_frame = !s->progressive_frame &&
1277 !s->progressive_sequence;
1278 s->current_picture_ptr->field_picture = s->picture_structure != PICT_FRAME;
1279
1280 s->current_picture_ptr->f->pict_type = s->pict_type;
1281 // if (s->avctx->flags && AV_CODEC_FLAG_QSCALE)
1282 // s->current_picture_ptr->quality = s->new_picture_ptr->quality;
1283 s->current_picture_ptr->f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
1284
1285 if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
1286 s->current_picture_ptr)) < 0)
1287 return ret;
1288
1289 if (s->pict_type != AV_PICTURE_TYPE_B) {
1290 s->last_picture_ptr = s->next_picture_ptr;
1291 if (!s->droppable)
1292 s->next_picture_ptr = s->current_picture_ptr;
1293 }
1294 ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
1295 s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
1296 s->last_picture_ptr ? s->last_picture_ptr->f->data[0] : NULL,
1297 s->next_picture_ptr ? s->next_picture_ptr->f->data[0] : NULL,
1298 s->current_picture_ptr ? s->current_picture_ptr->f->data[0] : NULL,
1299 s->pict_type, s->droppable);
1300
1301 if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
1302 (s->pict_type != AV_PICTURE_TYPE_I)) {
1303 int h_chroma_shift, v_chroma_shift;
1304 av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
1305 &h_chroma_shift, &v_chroma_shift);
1306 if (s->pict_type == AV_PICTURE_TYPE_B && s->next_picture_ptr && s->next_picture_ptr->f->buf[0])
1307 av_log(avctx, AV_LOG_DEBUG,
1308 "allocating dummy last picture for B frame\n");
1309 else if (s->pict_type != AV_PICTURE_TYPE_I)
1310 av_log(avctx, AV_LOG_ERROR,
1311 "warning: first frame is no keyframe\n");
1312
1313 /* Allocate a dummy frame */
1314 i = ff_find_unused_picture(s->avctx, s->picture, 0);
1315 if (i < 0) {
1316 av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1317 return i;
1318 }
1319 s->last_picture_ptr = &s->picture[i];
1320
1321 s->last_picture_ptr->reference = 3;
1322 s->last_picture_ptr->f->key_frame = 0;
1323 s->last_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
1324
1325 if (alloc_picture(s, s->last_picture_ptr) < 0) {
1326 s->last_picture_ptr = NULL;
1327 return -1;
1328 }
1329
1330 if (!avctx->hwaccel) {
1331 for(i=0; i<avctx->height; i++)
1332 memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i,
1333 0x80, avctx->width);
1334 if (s->last_picture_ptr->f->data[2]) {
1335 for(i=0; i<AV_CEIL_RSHIFT(avctx->height, v_chroma_shift); i++) {
1336 memset(s->last_picture_ptr->f->data[1] + s->last_picture_ptr->f->linesize[1]*i,
1337 0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1338 memset(s->last_picture_ptr->f->data[2] + s->last_picture_ptr->f->linesize[2]*i,
1339 0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1340 }
1341 }
1342
1343 if(s->codec_id == AV_CODEC_ID_FLV1 || s->codec_id == AV_CODEC_ID_H263){
1344 for(i=0; i<avctx->height; i++)
1345 memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i, 16, avctx->width);
1346 }
1347 }
1348
1349 ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
1350 ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
1351 }
1352 if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) &&
1353 s->pict_type == AV_PICTURE_TYPE_B) {
1354 /* Allocate a dummy frame */
1355 i = ff_find_unused_picture(s->avctx, s->picture, 0);
1356 if (i < 0) {
1357 av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1358 return i;
1359 }
1360 s->next_picture_ptr = &s->picture[i];
1361
1362 s->next_picture_ptr->reference = 3;
1363 s->next_picture_ptr->f->key_frame = 0;
1364 s->next_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
1365
1366 if (alloc_picture(s, s->next_picture_ptr) < 0) {
1367 s->next_picture_ptr = NULL;
1368 return -1;
1369 }
1370 ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
1371 ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
1372 }
1373
1374 #if 0 // BUFREF-FIXME
1375 memset(s->last_picture.f->data, 0, sizeof(s->last_picture.f->data));
1376 memset(s->next_picture.f->data, 0, sizeof(s->next_picture.f->data));
1377 #endif
1378 if (s->last_picture_ptr) {
1379 if (s->last_picture_ptr->f->buf[0] &&
1380 (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
1381 s->last_picture_ptr)) < 0)
1382 return ret;
1383 }
1384 if (s->next_picture_ptr) {
1385 if (s->next_picture_ptr->f->buf[0] &&
1386 (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
1387 s->next_picture_ptr)) < 0)
1388 return ret;
1389 }
1390
1391 av_assert0(s->pict_type == AV_PICTURE_TYPE_I || (s->last_picture_ptr &&
1392 s->last_picture_ptr->f->buf[0]));
1393
1394 if (s->picture_structure!= PICT_FRAME) {
1395 int i;
1396 for (i = 0; i < 4; i++) {
1397 if (s->picture_structure == PICT_BOTTOM_FIELD) {
1398 s->current_picture.f->data[i] +=
1399 s->current_picture.f->linesize[i];
1400 }
1401 s->current_picture.f->linesize[i] *= 2;
1402 s->last_picture.f->linesize[i] *= 2;
1403 s->next_picture.f->linesize[i] *= 2;
1404 }
1405 }
1406
1407 /* set dequantizer, we can't do it during init as
1408 * it might change for MPEG-4 and we can't do it in the header
1409 * decode as init is not called for MPEG-4 there yet */
1410 if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1411 s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
1412 s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
1413 } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
1414 s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
1415 s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
1416 } else {
1417 s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra;
1418 s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
1419 }
1420
1421 if (s->avctx->debug & FF_DEBUG_NOMC) {
1422 gray_frame(s->current_picture_ptr->f);
1423 }
1424
1425 return 0;
1426 }
1427
1428 /* called after a frame has been decoded. */
ff_mpv_frame_end(MpegEncContext * s)1429 void ff_mpv_frame_end(MpegEncContext *s)
1430 {
1431 emms_c();
1432
1433 if (s->current_picture.reference)
1434 ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
1435 }
1436
ff_print_debug_info(MpegEncContext * s,Picture * p,AVFrame * pict)1437 void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
1438 {
1439 ff_print_debug_info2(s->avctx, pict, s->mbskip_table, p->mb_type,
1440 p->qscale_table, p->motion_val, &s->low_delay,
1441 s->mb_width, s->mb_height, s->mb_stride, s->quarter_sample);
1442 }
1443
ff_mpv_export_qp_table(MpegEncContext * s,AVFrame * f,Picture * p,int qp_type)1444 int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
1445 {
1446 AVBufferRef *ref = av_buffer_ref(p->qscale_table_buf);
1447 int offset = 2*s->mb_stride + 1;
1448 if(!ref)
1449 return AVERROR(ENOMEM);
1450 av_assert0(ref->size >= offset + s->mb_stride * ((f->height+15)/16));
1451 ref->size -= offset;
1452 ref->data += offset;
1453 return av_frame_set_qp_table(f, ref, s->mb_stride, qp_type);
1454 }
1455
hpel_motion_lowres(MpegEncContext * s,uint8_t * dest,uint8_t * src,int field_based,int field_select,int src_x,int src_y,int width,int height,ptrdiff_t stride,int h_edge_pos,int v_edge_pos,int w,int h,h264_chroma_mc_func * pix_op,int motion_x,int motion_y)1456 static inline int hpel_motion_lowres(MpegEncContext *s,
1457 uint8_t *dest, uint8_t *src,
1458 int field_based, int field_select,
1459 int src_x, int src_y,
1460 int width, int height, ptrdiff_t stride,
1461 int h_edge_pos, int v_edge_pos,
1462 int w, int h, h264_chroma_mc_func *pix_op,
1463 int motion_x, int motion_y)
1464 {
1465 const int lowres = s->avctx->lowres;
1466 const int op_index = FFMIN(lowres, 3);
1467 const int s_mask = (2 << lowres) - 1;
1468 int emu = 0;
1469 int sx, sy;
1470
1471 if (s->quarter_sample) {
1472 motion_x /= 2;
1473 motion_y /= 2;
1474 }
1475
1476 sx = motion_x & s_mask;
1477 sy = motion_y & s_mask;
1478 src_x += motion_x >> lowres + 1;
1479 src_y += motion_y >> lowres + 1;
1480
1481 src += src_y * stride + src_x;
1482
1483 if ((unsigned)src_x > FFMAX( h_edge_pos - (!!sx) - w, 0) ||
1484 (unsigned)src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1485 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, src,
1486 s->linesize, s->linesize,
1487 w + 1, (h + 1) << field_based,
1488 src_x, src_y << field_based,
1489 h_edge_pos, v_edge_pos);
1490 src = s->sc.edge_emu_buffer;
1491 emu = 1;
1492 }
1493
1494 sx = (sx << 2) >> lowres;
1495 sy = (sy << 2) >> lowres;
1496 if (field_select)
1497 src += s->linesize;
1498 pix_op[op_index](dest, src, stride, h, sx, sy);
1499 return emu;
1500 }
1501
1502 /* apply one mpeg motion vector to the three components */
mpeg_motion_lowres(MpegEncContext * s,uint8_t * dest_y,uint8_t * dest_cb,uint8_t * dest_cr,int field_based,int bottom_field,int field_select,uint8_t ** ref_picture,h264_chroma_mc_func * pix_op,int motion_x,int motion_y,int h,int mb_y)1503 static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
1504 uint8_t *dest_y,
1505 uint8_t *dest_cb,
1506 uint8_t *dest_cr,
1507 int field_based,
1508 int bottom_field,
1509 int field_select,
1510 uint8_t **ref_picture,
1511 h264_chroma_mc_func *pix_op,
1512 int motion_x, int motion_y,
1513 int h, int mb_y)
1514 {
1515 uint8_t *ptr_y, *ptr_cb, *ptr_cr;
1516 int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, sx, sy, uvsx, uvsy;
1517 ptrdiff_t uvlinesize, linesize;
1518 const int lowres = s->avctx->lowres;
1519 const int op_index = FFMIN(lowres-1+s->chroma_x_shift, 3);
1520 const int block_s = 8>>lowres;
1521 const int s_mask = (2 << lowres) - 1;
1522 const int h_edge_pos = s->h_edge_pos >> lowres;
1523 const int v_edge_pos = s->v_edge_pos >> lowres;
1524 linesize = s->current_picture.f->linesize[0] << field_based;
1525 uvlinesize = s->current_picture.f->linesize[1] << field_based;
1526
1527 // FIXME obviously not perfect but qpel will not work in lowres anyway
1528 if (s->quarter_sample) {
1529 motion_x /= 2;
1530 motion_y /= 2;
1531 }
1532
1533 if(field_based){
1534 motion_y += (bottom_field - field_select)*((1 << lowres)-1);
1535 }
1536
1537 sx = motion_x & s_mask;
1538 sy = motion_y & s_mask;
1539 src_x = s->mb_x * 2 * block_s + (motion_x >> lowres + 1);
1540 src_y = (mb_y * 2 * block_s >> field_based) + (motion_y >> lowres + 1);
1541
1542 if (s->out_format == FMT_H263) {
1543 uvsx = ((motion_x >> 1) & s_mask) | (sx & 1);
1544 uvsy = ((motion_y >> 1) & s_mask) | (sy & 1);
1545 uvsrc_x = src_x >> 1;
1546 uvsrc_y = src_y >> 1;
1547 } else if (s->out_format == FMT_H261) {
1548 // even chroma mv's are full pel in H261
1549 mx = motion_x / 4;
1550 my = motion_y / 4;
1551 uvsx = (2 * mx) & s_mask;
1552 uvsy = (2 * my) & s_mask;
1553 uvsrc_x = s->mb_x * block_s + (mx >> lowres);
1554 uvsrc_y = mb_y * block_s + (my >> lowres);
1555 } else {
1556 if(s->chroma_y_shift){
1557 mx = motion_x / 2;
1558 my = motion_y / 2;
1559 uvsx = mx & s_mask;
1560 uvsy = my & s_mask;
1561 uvsrc_x = s->mb_x * block_s + (mx >> lowres + 1);
1562 uvsrc_y = (mb_y * block_s >> field_based) + (my >> lowres + 1);
1563 } else {
1564 if(s->chroma_x_shift){
1565 //Chroma422
1566 mx = motion_x / 2;
1567 uvsx = mx & s_mask;
1568 uvsy = motion_y & s_mask;
1569 uvsrc_y = src_y;
1570 uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
1571 } else {
1572 //Chroma444
1573 uvsx = motion_x & s_mask;
1574 uvsy = motion_y & s_mask;
1575 uvsrc_x = src_x;
1576 uvsrc_y = src_y;
1577 }
1578 }
1579 }
1580
1581 ptr_y = ref_picture[0] + src_y * linesize + src_x;
1582 ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
1583 ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
1584
1585 if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s, 0) || uvsrc_y<0 ||
1586 (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1587 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
1588 linesize >> field_based, linesize >> field_based,
1589 17, 17 + field_based,
1590 src_x, src_y << field_based, h_edge_pos,
1591 v_edge_pos);
1592 ptr_y = s->sc.edge_emu_buffer;
1593 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1594 uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
1595 uint8_t *vbuf =ubuf + 10 * s->uvlinesize;
1596 if (s->workaround_bugs & FF_BUG_IEDGE)
1597 vbuf -= s->uvlinesize;
1598 s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
1599 uvlinesize >> field_based, uvlinesize >> field_based,
1600 9, 9 + field_based,
1601 uvsrc_x, uvsrc_y << field_based,
1602 h_edge_pos >> 1, v_edge_pos >> 1);
1603 s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
1604 uvlinesize >> field_based,uvlinesize >> field_based,
1605 9, 9 + field_based,
1606 uvsrc_x, uvsrc_y << field_based,
1607 h_edge_pos >> 1, v_edge_pos >> 1);
1608 ptr_cb = ubuf;
1609 ptr_cr = vbuf;
1610 }
1611 }
1612
1613 // FIXME use this for field pix too instead of the obnoxious hack which changes picture.f->data
1614 if (bottom_field) {
1615 dest_y += s->linesize;
1616 dest_cb += s->uvlinesize;
1617 dest_cr += s->uvlinesize;
1618 }
1619
1620 if (field_select) {
1621 ptr_y += s->linesize;
1622 ptr_cb += s->uvlinesize;
1623 ptr_cr += s->uvlinesize;
1624 }
1625
1626 sx = (sx << 2) >> lowres;
1627 sy = (sy << 2) >> lowres;
1628 pix_op[lowres - 1](dest_y, ptr_y, linesize, h, sx, sy);
1629
1630 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1631 int hc = s->chroma_y_shift ? (h+1-bottom_field)>>1 : h;
1632 uvsx = (uvsx << 2) >> lowres;
1633 uvsy = (uvsy << 2) >> lowres;
1634 if (hc) {
1635 pix_op[op_index](dest_cb, ptr_cb, uvlinesize, hc, uvsx, uvsy);
1636 pix_op[op_index](dest_cr, ptr_cr, uvlinesize, hc, uvsx, uvsy);
1637 }
1638 }
1639 // FIXME h261 lowres loop filter
1640 }
1641
chroma_4mv_motion_lowres(MpegEncContext * s,uint8_t * dest_cb,uint8_t * dest_cr,uint8_t ** ref_picture,h264_chroma_mc_func * pix_op,int mx,int my)1642 static inline void chroma_4mv_motion_lowres(MpegEncContext *s,
1643 uint8_t *dest_cb, uint8_t *dest_cr,
1644 uint8_t **ref_picture,
1645 h264_chroma_mc_func * pix_op,
1646 int mx, int my)
1647 {
1648 const int lowres = s->avctx->lowres;
1649 const int op_index = FFMIN(lowres, 3);
1650 const int block_s = 8 >> lowres;
1651 const int s_mask = (2 << lowres) - 1;
1652 const int h_edge_pos = s->h_edge_pos >> lowres + 1;
1653 const int v_edge_pos = s->v_edge_pos >> lowres + 1;
1654 int emu = 0, src_x, src_y, sx, sy;
1655 ptrdiff_t offset;
1656 uint8_t *ptr;
1657
1658 if (s->quarter_sample) {
1659 mx /= 2;
1660 my /= 2;
1661 }
1662
1663 /* In case of 8X8, we construct a single chroma motion vector
1664 with a special rounding */
1665 mx = ff_h263_round_chroma(mx);
1666 my = ff_h263_round_chroma(my);
1667
1668 sx = mx & s_mask;
1669 sy = my & s_mask;
1670 src_x = s->mb_x * block_s + (mx >> lowres + 1);
1671 src_y = s->mb_y * block_s + (my >> lowres + 1);
1672
1673 offset = src_y * s->uvlinesize + src_x;
1674 ptr = ref_picture[1] + offset;
1675 if ((unsigned) src_x > FFMAX(h_edge_pos - (!!sx) - block_s, 0) ||
1676 (unsigned) src_y > FFMAX(v_edge_pos - (!!sy) - block_s, 0)) {
1677 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
1678 s->uvlinesize, s->uvlinesize,
1679 9, 9,
1680 src_x, src_y, h_edge_pos, v_edge_pos);
1681 ptr = s->sc.edge_emu_buffer;
1682 emu = 1;
1683 }
1684 sx = (sx << 2) >> lowres;
1685 sy = (sy << 2) >> lowres;
1686 pix_op[op_index](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
1687
1688 ptr = ref_picture[2] + offset;
1689 if (emu) {
1690 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
1691 s->uvlinesize, s->uvlinesize,
1692 9, 9,
1693 src_x, src_y, h_edge_pos, v_edge_pos);
1694 ptr = s->sc.edge_emu_buffer;
1695 }
1696 pix_op[op_index](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
1697 }
1698
1699 /**
1700 * motion compensation of a single macroblock
1701 * @param s context
1702 * @param dest_y luma destination pointer
1703 * @param dest_cb chroma cb/u destination pointer
1704 * @param dest_cr chroma cr/v destination pointer
1705 * @param dir direction (0->forward, 1->backward)
1706 * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
1707 * @param pix_op halfpel motion compensation function (average or put normally)
1708 * the motion vectors are taken from s->mv and the MV type from s->mv_type
1709 */
MPV_motion_lowres(MpegEncContext * s,uint8_t * dest_y,uint8_t * dest_cb,uint8_t * dest_cr,int dir,uint8_t ** ref_picture,h264_chroma_mc_func * pix_op)1710 static inline void MPV_motion_lowres(MpegEncContext *s,
1711 uint8_t *dest_y, uint8_t *dest_cb,
1712 uint8_t *dest_cr,
1713 int dir, uint8_t **ref_picture,
1714 h264_chroma_mc_func *pix_op)
1715 {
1716 int mx, my;
1717 int mb_x, mb_y, i;
1718 const int lowres = s->avctx->lowres;
1719 const int block_s = 8 >>lowres;
1720
1721 mb_x = s->mb_x;
1722 mb_y = s->mb_y;
1723
1724 switch (s->mv_type) {
1725 case MV_TYPE_16X16:
1726 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1727 0, 0, 0,
1728 ref_picture, pix_op,
1729 s->mv[dir][0][0], s->mv[dir][0][1],
1730 2 * block_s, mb_y);
1731 break;
1732 case MV_TYPE_8X8:
1733 mx = 0;
1734 my = 0;
1735 for (i = 0; i < 4; i++) {
1736 hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) *
1737 s->linesize) * block_s,
1738 ref_picture[0], 0, 0,
1739 (2 * mb_x + (i & 1)) * block_s,
1740 (2 * mb_y + (i >> 1)) * block_s,
1741 s->width, s->height, s->linesize,
1742 s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
1743 block_s, block_s, pix_op,
1744 s->mv[dir][i][0], s->mv[dir][i][1]);
1745
1746 mx += s->mv[dir][i][0];
1747 my += s->mv[dir][i][1];
1748 }
1749
1750 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))
1751 chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture,
1752 pix_op, mx, my);
1753 break;
1754 case MV_TYPE_FIELD:
1755 if (s->picture_structure == PICT_FRAME) {
1756 /* top field */
1757 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1758 1, 0, s->field_select[dir][0],
1759 ref_picture, pix_op,
1760 s->mv[dir][0][0], s->mv[dir][0][1],
1761 block_s, mb_y);
1762 /* bottom field */
1763 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1764 1, 1, s->field_select[dir][1],
1765 ref_picture, pix_op,
1766 s->mv[dir][1][0], s->mv[dir][1][1],
1767 block_s, mb_y);
1768 } else {
1769 if (s->picture_structure != s->field_select[dir][0] + 1 &&
1770 s->pict_type != AV_PICTURE_TYPE_B && !s->first_field) {
1771 ref_picture = s->current_picture_ptr->f->data;
1772
1773 }
1774 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1775 0, 0, s->field_select[dir][0],
1776 ref_picture, pix_op,
1777 s->mv[dir][0][0],
1778 s->mv[dir][0][1], 2 * block_s, mb_y >> 1);
1779 }
1780 break;
1781 case MV_TYPE_16X8:
1782 for (i = 0; i < 2; i++) {
1783 uint8_t **ref2picture;
1784
1785 if (s->picture_structure == s->field_select[dir][i] + 1 ||
1786 s->pict_type == AV_PICTURE_TYPE_B || s->first_field) {
1787 ref2picture = ref_picture;
1788 } else {
1789 ref2picture = s->current_picture_ptr->f->data;
1790 }
1791
1792 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1793 0, 0, s->field_select[dir][i],
1794 ref2picture, pix_op,
1795 s->mv[dir][i][0], s->mv[dir][i][1] +
1796 2 * block_s * i, block_s, mb_y >> 1);
1797
1798 dest_y += 2 * block_s * s->linesize;
1799 dest_cb += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
1800 dest_cr += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
1801 }
1802 break;
1803 case MV_TYPE_DMV:
1804 if (s->picture_structure == PICT_FRAME) {
1805 for (i = 0; i < 2; i++) {
1806 int j;
1807 for (j = 0; j < 2; j++) {
1808 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1809 1, j, j ^ i,
1810 ref_picture, pix_op,
1811 s->mv[dir][2 * i + j][0],
1812 s->mv[dir][2 * i + j][1],
1813 block_s, mb_y);
1814 }
1815 pix_op = s->h264chroma.avg_h264_chroma_pixels_tab;
1816 }
1817 } else {
1818 for (i = 0; i < 2; i++) {
1819 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1820 0, 0, s->picture_structure != i + 1,
1821 ref_picture, pix_op,
1822 s->mv[dir][2 * i][0],s->mv[dir][2 * i][1],
1823 2 * block_s, mb_y >> 1);
1824
1825 // after put we make avg of the same block
1826 pix_op = s->h264chroma.avg_h264_chroma_pixels_tab;
1827
1828 // opposite parity is always in the same
1829 // frame if this is second field
1830 if (!s->first_field) {
1831 ref_picture = s->current_picture_ptr->f->data;
1832 }
1833 }
1834 }
1835 break;
1836 default:
1837 av_assert2(0);
1838 }
1839 }
1840
1841 /**
1842 * find the lowest MB row referenced in the MVs
1843 */
lowest_referenced_row(MpegEncContext * s,int dir)1844 static int lowest_referenced_row(MpegEncContext *s, int dir)
1845 {
1846 int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
1847 int my, off, i, mvs;
1848
1849 if (s->picture_structure != PICT_FRAME || s->mcsel)
1850 goto unhandled;
1851
1852 switch (s->mv_type) {
1853 case MV_TYPE_16X16:
1854 mvs = 1;
1855 break;
1856 case MV_TYPE_16X8:
1857 mvs = 2;
1858 break;
1859 case MV_TYPE_8X8:
1860 mvs = 4;
1861 break;
1862 default:
1863 goto unhandled;
1864 }
1865
1866 for (i = 0; i < mvs; i++) {
1867 my = s->mv[dir][i][1];
1868 my_max = FFMAX(my_max, my);
1869 my_min = FFMIN(my_min, my);
1870 }
1871
1872 off = ((FFMAX(-my_min, my_max)<<qpel_shift) + 63) >> 6;
1873
1874 return av_clip(s->mb_y + off, 0, s->mb_height - 1);
1875 unhandled:
1876 return s->mb_height-1;
1877 }
1878
1879 /* put block[] to dest[] */
put_dct(MpegEncContext * s,int16_t * block,int i,uint8_t * dest,int line_size,int qscale)1880 static inline void put_dct(MpegEncContext *s,
1881 int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
1882 {
1883 s->dct_unquantize_intra(s, block, i, qscale);
1884 s->idsp.idct_put(dest, line_size, block);
1885 }
1886
1887 /* add block[] to dest[] */
add_dct(MpegEncContext * s,int16_t * block,int i,uint8_t * dest,int line_size)1888 static inline void add_dct(MpegEncContext *s,
1889 int16_t *block, int i, uint8_t *dest, int line_size)
1890 {
1891 if (s->block_last_index[i] >= 0) {
1892 s->idsp.idct_add(dest, line_size, block);
1893 }
1894 }
1895
add_dequant_dct(MpegEncContext * s,int16_t * block,int i,uint8_t * dest,int line_size,int qscale)1896 static inline void add_dequant_dct(MpegEncContext *s,
1897 int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
1898 {
1899 if (s->block_last_index[i] >= 0) {
1900 s->dct_unquantize_inter(s, block, i, qscale);
1901
1902 s->idsp.idct_add(dest, line_size, block);
1903 }
1904 }
1905
1906 /**
1907 * Clean dc, ac, coded_block for the current non-intra MB.
1908 */
ff_clean_intra_table_entries(MpegEncContext * s)1909 void ff_clean_intra_table_entries(MpegEncContext *s)
1910 {
1911 int wrap = s->b8_stride;
1912 int xy = s->block_index[0];
1913
1914 s->dc_val[0][xy ] =
1915 s->dc_val[0][xy + 1 ] =
1916 s->dc_val[0][xy + wrap] =
1917 s->dc_val[0][xy + 1 + wrap] = 1024;
1918 /* ac pred */
1919 memset(s->ac_val[0][xy ], 0, 32 * sizeof(int16_t));
1920 memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
1921 if (s->msmpeg4_version>=3) {
1922 s->coded_block[xy ] =
1923 s->coded_block[xy + 1 ] =
1924 s->coded_block[xy + wrap] =
1925 s->coded_block[xy + 1 + wrap] = 0;
1926 }
1927 /* chroma */
1928 wrap = s->mb_stride;
1929 xy = s->mb_x + s->mb_y * wrap;
1930 s->dc_val[1][xy] =
1931 s->dc_val[2][xy] = 1024;
1932 /* ac pred */
1933 memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
1934 memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
1935
1936 s->mbintra_table[xy]= 0;
1937 }
1938
1939 /* generic function called after a macroblock has been parsed by the
1940 decoder or after it has been encoded by the encoder.
1941
1942 Important variables used:
1943 s->mb_intra : true if intra macroblock
1944 s->mv_dir : motion vector direction
1945 s->mv_type : motion vector type
1946 s->mv : motion vector
1947 s->interlaced_dct : true if interlaced dct used (mpeg2)
1948 */
1949 static av_always_inline
mpv_reconstruct_mb_internal(MpegEncContext * s,int16_t block[12][64],int lowres_flag,int is_mpeg12)1950 void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
1951 int lowres_flag, int is_mpeg12)
1952 {
1953 const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
1954
1955 if (CONFIG_XVMC &&
1956 s->avctx->hwaccel && s->avctx->hwaccel->decode_mb) {
1957 s->avctx->hwaccel->decode_mb(s);//xvmc uses pblocks
1958 return;
1959 }
1960
1961 if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
1962 /* print DCT coefficients */
1963 int i,j;
1964 av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
1965 for(i=0; i<6; i++){
1966 for(j=0; j<64; j++){
1967 av_log(s->avctx, AV_LOG_DEBUG, "%5d",
1968 block[i][s->idsp.idct_permutation[j]]);
1969 }
1970 av_log(s->avctx, AV_LOG_DEBUG, "\n");
1971 }
1972 }
1973
1974 s->current_picture.qscale_table[mb_xy] = s->qscale;
1975
1976 /* update DC predictors for P macroblocks */
1977 if (!s->mb_intra) {
1978 if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) {
1979 if(s->mbintra_table[mb_xy])
1980 ff_clean_intra_table_entries(s);
1981 } else {
1982 s->last_dc[0] =
1983 s->last_dc[1] =
1984 s->last_dc[2] = 128 << s->intra_dc_precision;
1985 }
1986 }
1987 else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
1988 s->mbintra_table[mb_xy]=1;
1989
1990 if ((s->avctx->flags & AV_CODEC_FLAG_PSNR) || s->frame_skip_threshold || s->frame_skip_factor ||
1991 !(s->encoding && (s->intra_only || s->pict_type == AV_PICTURE_TYPE_B) &&
1992 s->avctx->mb_decision != FF_MB_DECISION_RD)) { // FIXME precalc
1993 uint8_t *dest_y, *dest_cb, *dest_cr;
1994 int dct_linesize, dct_offset;
1995 op_pixels_func (*op_pix)[4];
1996 qpel_mc_func (*op_qpix)[16];
1997 const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
1998 const int uvlinesize = s->current_picture.f->linesize[1];
1999 const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
2000 const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
2001
2002 /* avoid copy if macroblock skipped in last frame too */
2003 /* skip only during decoding as we might trash the buffers during encoding a bit */
2004 if(!s->encoding){
2005 uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
2006
2007 if (s->mb_skipped) {
2008 s->mb_skipped= 0;
2009 av_assert2(s->pict_type!=AV_PICTURE_TYPE_I);
2010 *mbskip_ptr = 1;
2011 } else if(!s->current_picture.reference) {
2012 *mbskip_ptr = 1;
2013 } else{
2014 *mbskip_ptr = 0; /* not skipped */
2015 }
2016 }
2017
2018 dct_linesize = linesize << s->interlaced_dct;
2019 dct_offset = s->interlaced_dct ? linesize : linesize * block_size;
2020
2021 if(readable){
2022 dest_y= s->dest[0];
2023 dest_cb= s->dest[1];
2024 dest_cr= s->dest[2];
2025 }else{
2026 dest_y = s->sc.b_scratchpad;
2027 dest_cb= s->sc.b_scratchpad+16*linesize;
2028 dest_cr= s->sc.b_scratchpad+32*linesize;
2029 }
2030
2031 if (!s->mb_intra) {
2032 /* motion handling */
2033 /* decoding or more than one mb_type (MC was already done otherwise) */
2034 if(!s->encoding){
2035
2036 if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
2037 if (s->mv_dir & MV_DIR_FORWARD) {
2038 ff_thread_await_progress(&s->last_picture_ptr->tf,
2039 lowest_referenced_row(s, 0),
2040 0);
2041 }
2042 if (s->mv_dir & MV_DIR_BACKWARD) {
2043 ff_thread_await_progress(&s->next_picture_ptr->tf,
2044 lowest_referenced_row(s, 1),
2045 0);
2046 }
2047 }
2048
2049 if(lowres_flag){
2050 h264_chroma_mc_func *op_pix = s->h264chroma.put_h264_chroma_pixels_tab;
2051
2052 if (s->mv_dir & MV_DIR_FORWARD) {
2053 MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix);
2054 op_pix = s->h264chroma.avg_h264_chroma_pixels_tab;
2055 }
2056 if (s->mv_dir & MV_DIR_BACKWARD) {
2057 MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix);
2058 }
2059 }else{
2060 op_qpix = s->me.qpel_put;
2061 if ((!s->no_rounding) || s->pict_type==AV_PICTURE_TYPE_B){
2062 op_pix = s->hdsp.put_pixels_tab;
2063 }else{
2064 op_pix = s->hdsp.put_no_rnd_pixels_tab;
2065 }
2066 if (s->mv_dir & MV_DIR_FORWARD) {
2067 ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix, op_qpix);
2068 op_pix = s->hdsp.avg_pixels_tab;
2069 op_qpix= s->me.qpel_avg;
2070 }
2071 if (s->mv_dir & MV_DIR_BACKWARD) {
2072 ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix, op_qpix);
2073 }
2074 }
2075 }
2076
2077 /* skip dequant / idct if we are really late ;) */
2078 if(s->avctx->skip_idct){
2079 if( (s->avctx->skip_idct >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B)
2080 ||(s->avctx->skip_idct >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I)
2081 || s->avctx->skip_idct >= AVDISCARD_ALL)
2082 goto skip_idct;
2083 }
2084
2085 /* add dct residue */
2086 if(s->encoding || !( s->msmpeg4_version || s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO
2087 || (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){
2088 add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2089 add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2090 add_dequant_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2091 add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2092
2093 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2094 if (s->chroma_y_shift){
2095 add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2096 add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2097 }else{
2098 dct_linesize >>= 1;
2099 dct_offset >>=1;
2100 add_dequant_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2101 add_dequant_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2102 add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2103 add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2104 }
2105 }
2106 } else if(is_mpeg12 || (s->codec_id != AV_CODEC_ID_WMV2)){
2107 add_dct(s, block[0], 0, dest_y , dct_linesize);
2108 add_dct(s, block[1], 1, dest_y + block_size, dct_linesize);
2109 add_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize);
2110 add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
2111
2112 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2113 if(s->chroma_y_shift){//Chroma420
2114 add_dct(s, block[4], 4, dest_cb, uvlinesize);
2115 add_dct(s, block[5], 5, dest_cr, uvlinesize);
2116 }else{
2117 //chroma422
2118 dct_linesize = uvlinesize << s->interlaced_dct;
2119 dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2120
2121 add_dct(s, block[4], 4, dest_cb, dct_linesize);
2122 add_dct(s, block[5], 5, dest_cr, dct_linesize);
2123 add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
2124 add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
2125 if(!s->chroma_x_shift){//Chroma444
2126 add_dct(s, block[8], 8, dest_cb+block_size, dct_linesize);
2127 add_dct(s, block[9], 9, dest_cr+block_size, dct_linesize);
2128 add_dct(s, block[10], 10, dest_cb+block_size+dct_offset, dct_linesize);
2129 add_dct(s, block[11], 11, dest_cr+block_size+dct_offset, dct_linesize);
2130 }
2131 }
2132 }//fi gray
2133 }
2134 else if (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) {
2135 ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
2136 }
2137 } else {
2138 /* Only MPEG-4 Simple Studio Profile is supported in > 8-bit mode.
2139 TODO: Integrate 10-bit properly into mpegvideo.c so that ER works properly */
2140 if (s->avctx->bits_per_raw_sample > 8){
2141 const int act_block_size = block_size * 2;
2142
2143 if(s->dpcm_direction == 0) {
2144 s->idsp.idct_put(dest_y, dct_linesize, (int16_t*)(*s->block32)[0]);
2145 s->idsp.idct_put(dest_y + act_block_size, dct_linesize, (int16_t*)(*s->block32)[1]);
2146 s->idsp.idct_put(dest_y + dct_offset, dct_linesize, (int16_t*)(*s->block32)[2]);
2147 s->idsp.idct_put(dest_y + dct_offset + act_block_size, dct_linesize, (int16_t*)(*s->block32)[3]);
2148
2149 dct_linesize = uvlinesize << s->interlaced_dct;
2150 dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2151
2152 s->idsp.idct_put(dest_cb, dct_linesize, (int16_t*)(*s->block32)[4]);
2153 s->idsp.idct_put(dest_cr, dct_linesize, (int16_t*)(*s->block32)[5]);
2154 s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, (int16_t*)(*s->block32)[6]);
2155 s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, (int16_t*)(*s->block32)[7]);
2156 if(!s->chroma_x_shift){//Chroma444
2157 s->idsp.idct_put(dest_cb + act_block_size, dct_linesize, (int16_t*)(*s->block32)[8]);
2158 s->idsp.idct_put(dest_cr + act_block_size, dct_linesize, (int16_t*)(*s->block32)[9]);
2159 s->idsp.idct_put(dest_cb + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[10]);
2160 s->idsp.idct_put(dest_cr + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[11]);
2161 }
2162 } else if(s->dpcm_direction == 1) {
2163 int i, w, h;
2164 uint16_t *dest_pcm[3] = {(uint16_t*)dest_y, (uint16_t*)dest_cb, (uint16_t*)dest_cr};
2165 int linesize[3] = {dct_linesize, uvlinesize, uvlinesize};
2166 for(i = 0; i < 3; i++) {
2167 int idx = 0;
2168 int vsub = i ? s->chroma_y_shift : 0;
2169 int hsub = i ? s->chroma_x_shift : 0;
2170 for(h = 0; h < (16 >> vsub); h++){
2171 for(w = 0; w < (16 >> hsub); w++)
2172 dest_pcm[i][w] = (*s->dpcm_macroblock)[i][idx++];
2173 dest_pcm[i] += linesize[i] / 2;
2174 }
2175 }
2176 } else if(s->dpcm_direction == -1) {
2177 int i, w, h;
2178 uint16_t *dest_pcm[3] = {(uint16_t*)dest_y, (uint16_t*)dest_cb, (uint16_t*)dest_cr};
2179 int linesize[3] = {dct_linesize, uvlinesize, uvlinesize};
2180 for(i = 0; i < 3; i++) {
2181 int idx = 0;
2182 int vsub = i ? s->chroma_y_shift : 0;
2183 int hsub = i ? s->chroma_x_shift : 0;
2184 dest_pcm[i] += (linesize[i] / 2) * ((16 >> vsub) - 1);
2185 for(h = (16 >> vsub)-1; h >= 1; h--){
2186 for(w = (16 >> hsub)-1; w >= 1; w--)
2187 dest_pcm[i][w] = (*s->dpcm_macroblock)[i][idx++];
2188 dest_pcm[i] -= linesize[i] / 2;
2189 }
2190 }
2191 }
2192 }
2193 /* dct only in intra block */
2194 else if(s->encoding || !(s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO)){
2195 put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2196 put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2197 put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2198 put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2199
2200 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2201 if(s->chroma_y_shift){
2202 put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2203 put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2204 }else{
2205 dct_offset >>=1;
2206 dct_linesize >>=1;
2207 put_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2208 put_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2209 put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2210 put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2211 }
2212 }
2213 }else{
2214 s->idsp.idct_put(dest_y, dct_linesize, block[0]);
2215 s->idsp.idct_put(dest_y + block_size, dct_linesize, block[1]);
2216 s->idsp.idct_put(dest_y + dct_offset, dct_linesize, block[2]);
2217 s->idsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
2218
2219 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2220 if(s->chroma_y_shift){
2221 s->idsp.idct_put(dest_cb, uvlinesize, block[4]);
2222 s->idsp.idct_put(dest_cr, uvlinesize, block[5]);
2223 }else{
2224
2225 dct_linesize = uvlinesize << s->interlaced_dct;
2226 dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2227
2228 s->idsp.idct_put(dest_cb, dct_linesize, block[4]);
2229 s->idsp.idct_put(dest_cr, dct_linesize, block[5]);
2230 s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
2231 s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
2232 if(!s->chroma_x_shift){//Chroma444
2233 s->idsp.idct_put(dest_cb + block_size, dct_linesize, block[8]);
2234 s->idsp.idct_put(dest_cr + block_size, dct_linesize, block[9]);
2235 s->idsp.idct_put(dest_cb + block_size + dct_offset, dct_linesize, block[10]);
2236 s->idsp.idct_put(dest_cr + block_size + dct_offset, dct_linesize, block[11]);
2237 }
2238 }
2239 }//gray
2240 }
2241 }
2242 skip_idct:
2243 if(!readable){
2244 s->hdsp.put_pixels_tab[0][0](s->dest[0], dest_y , linesize,16);
2245 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2246 s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
2247 s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
2248 }
2249 }
2250 }
2251 }
2252
ff_mpv_reconstruct_mb(MpegEncContext * s,int16_t block[12][64])2253 void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
2254 {
2255 #if !CONFIG_SMALL
2256 if(s->out_format == FMT_MPEG1) {
2257 if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 1);
2258 else mpv_reconstruct_mb_internal(s, block, 0, 1);
2259 } else
2260 #endif
2261 if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 0);
2262 else mpv_reconstruct_mb_internal(s, block, 0, 0);
2263 }
2264
ff_mpeg_draw_horiz_band(MpegEncContext * s,int y,int h)2265 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
2266 {
2267 ff_draw_horiz_band(s->avctx, s->current_picture_ptr->f,
2268 s->last_picture_ptr ? s->last_picture_ptr->f : NULL, y, h, s->picture_structure,
2269 s->first_field, s->low_delay);
2270 }
2271
ff_init_block_index(MpegEncContext * s)2272 void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
2273 const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
2274 const int uvlinesize = s->current_picture.f->linesize[1];
2275 const int width_of_mb = (4 + (s->avctx->bits_per_raw_sample > 8)) - s->avctx->lowres;
2276 const int height_of_mb = 4 - s->avctx->lowres;
2277
2278 s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2;
2279 s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2;
2280 s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
2281 s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
2282 s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
2283 s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
2284 //block_index is not used by mpeg2, so it is not affected by chroma_format
2285
2286 s->dest[0] = s->current_picture.f->data[0] + (int)((s->mb_x - 1U) << width_of_mb);
2287 s->dest[1] = s->current_picture.f->data[1] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift));
2288 s->dest[2] = s->current_picture.f->data[2] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift));
2289
2290 if(!(s->pict_type==AV_PICTURE_TYPE_B && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME))
2291 {
2292 if(s->picture_structure==PICT_FRAME){
2293 s->dest[0] += s->mb_y * linesize << height_of_mb;
2294 s->dest[1] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift);
2295 s->dest[2] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift);
2296 }else{
2297 s->dest[0] += (s->mb_y>>1) * linesize << height_of_mb;
2298 s->dest[1] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift);
2299 s->dest[2] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift);
2300 av_assert1((s->mb_y&1) == (s->picture_structure == PICT_BOTTOM_FIELD));
2301 }
2302 }
2303 }
2304
ff_mpeg_flush(AVCodecContext * avctx)2305 void ff_mpeg_flush(AVCodecContext *avctx){
2306 int i;
2307 MpegEncContext *s = avctx->priv_data;
2308
2309 if (!s || !s->picture)
2310 return;
2311
2312 for (i = 0; i < MAX_PICTURE_COUNT; i++)
2313 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
2314 s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
2315
2316 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
2317 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
2318 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
2319
2320 s->mb_x= s->mb_y= 0;
2321 s->closed_gop= 0;
2322
2323 s->parse_context.state= -1;
2324 s->parse_context.frame_start_found= 0;
2325 s->parse_context.overread= 0;
2326 s->parse_context.overread_index= 0;
2327 s->parse_context.index= 0;
2328 s->parse_context.last_index= 0;
2329 s->bitstream_buffer_size=0;
2330 s->pp_time=0;
2331 }
2332
2333 /**
2334 * set qscale and update qscale dependent variables.
2335 */
ff_set_qscale(MpegEncContext * s,int qscale)2336 void ff_set_qscale(MpegEncContext * s, int qscale)
2337 {
2338 if (qscale < 1)
2339 qscale = 1;
2340 else if (qscale > 31)
2341 qscale = 31;
2342
2343 s->qscale = qscale;
2344 s->chroma_qscale= s->chroma_qscale_table[qscale];
2345
2346 s->y_dc_scale= s->y_dc_scale_table[ qscale ];
2347 s->c_dc_scale= s->c_dc_scale_table[ s->chroma_qscale ];
2348 }
2349
ff_mpv_report_decode_progress(MpegEncContext * s)2350 void ff_mpv_report_decode_progress(MpegEncContext *s)
2351 {
2352 if (s->pict_type != AV_PICTURE_TYPE_B && !s->partitioned_frame && !s->er.error_occurred)
2353 ff_thread_report_progress(&s->current_picture_ptr->tf, s->mb_y, 0);
2354 }
2355