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 "libavutil/video_enc_params.h"
36
37 #include "avcodec.h"
38 #include "blockdsp.h"
39 #include "h264chroma.h"
40 #include "idctdsp.h"
41 #include "internal.h"
42 #include "mathops.h"
43 #include "mpeg_er.h"
44 #include "mpegutils.h"
45 #include "mpegvideo.h"
46 #include "mpegvideodata.h"
47 #include "mjpegenc.h"
48 #include "msmpeg4.h"
49 #include "qpeldsp.h"
50 #include "thread.h"
51 #include "wmv2.h"
52 #include <limits.h>
53
dct_unquantize_mpeg1_intra_c(MpegEncContext * s,int16_t * block,int n,int qscale)54 static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
55 int16_t *block, int n, int qscale)
56 {
57 int i, level, nCoeffs;
58 const uint16_t *quant_matrix;
59
60 nCoeffs= s->block_last_index[n];
61
62 block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
63 /* XXX: only MPEG-1 */
64 quant_matrix = s->intra_matrix;
65 for(i=1;i<=nCoeffs;i++) {
66 int j= s->intra_scantable.permutated[i];
67 level = block[j];
68 if (level) {
69 if (level < 0) {
70 level = -level;
71 level = (int)(level * qscale * quant_matrix[j]) >> 3;
72 level = (level - 1) | 1;
73 level = -level;
74 } else {
75 level = (int)(level * qscale * quant_matrix[j]) >> 3;
76 level = (level - 1) | 1;
77 }
78 block[j] = level;
79 }
80 }
81 }
82
dct_unquantize_mpeg1_inter_c(MpegEncContext * s,int16_t * block,int n,int qscale)83 static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
84 int16_t *block, int n, int qscale)
85 {
86 int i, level, nCoeffs;
87 const uint16_t *quant_matrix;
88
89 nCoeffs= s->block_last_index[n];
90
91 quant_matrix = s->inter_matrix;
92 for(i=0; i<=nCoeffs; i++) {
93 int j= s->intra_scantable.permutated[i];
94 level = block[j];
95 if (level) {
96 if (level < 0) {
97 level = -level;
98 level = (((level << 1) + 1) * qscale *
99 ((int) (quant_matrix[j]))) >> 4;
100 level = (level - 1) | 1;
101 level = -level;
102 } else {
103 level = (((level << 1) + 1) * qscale *
104 ((int) (quant_matrix[j]))) >> 4;
105 level = (level - 1) | 1;
106 }
107 block[j] = level;
108 }
109 }
110 }
111
dct_unquantize_mpeg2_intra_c(MpegEncContext * s,int16_t * block,int n,int qscale)112 static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
113 int16_t *block, int n, int qscale)
114 {
115 int i, level, nCoeffs;
116 const uint16_t *quant_matrix;
117
118 if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
119 else qscale <<= 1;
120
121 if(s->alternate_scan) nCoeffs= 63;
122 else nCoeffs= s->block_last_index[n];
123
124 block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
125 quant_matrix = s->intra_matrix;
126 for(i=1;i<=nCoeffs;i++) {
127 int j= s->intra_scantable.permutated[i];
128 level = block[j];
129 if (level) {
130 if (level < 0) {
131 level = -level;
132 level = (int)(level * qscale * quant_matrix[j]) >> 4;
133 level = -level;
134 } else {
135 level = (int)(level * qscale * quant_matrix[j]) >> 4;
136 }
137 block[j] = level;
138 }
139 }
140 }
141
dct_unquantize_mpeg2_intra_bitexact(MpegEncContext * s,int16_t * block,int n,int qscale)142 static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
143 int16_t *block, int n, int qscale)
144 {
145 int i, level, nCoeffs;
146 const uint16_t *quant_matrix;
147 int sum=-1;
148
149 if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
150 else qscale <<= 1;
151
152 if(s->alternate_scan) nCoeffs= 63;
153 else nCoeffs= s->block_last_index[n];
154
155 block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
156 sum += block[0];
157 quant_matrix = s->intra_matrix;
158 for(i=1;i<=nCoeffs;i++) {
159 int j= s->intra_scantable.permutated[i];
160 level = block[j];
161 if (level) {
162 if (level < 0) {
163 level = -level;
164 level = (int)(level * qscale * quant_matrix[j]) >> 4;
165 level = -level;
166 } else {
167 level = (int)(level * qscale * quant_matrix[j]) >> 4;
168 }
169 block[j] = level;
170 sum+=level;
171 }
172 }
173 block[63]^=sum&1;
174 }
175
dct_unquantize_mpeg2_inter_c(MpegEncContext * s,int16_t * block,int n,int qscale)176 static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
177 int16_t *block, int n, int qscale)
178 {
179 int i, level, nCoeffs;
180 const uint16_t *quant_matrix;
181 int sum=-1;
182
183 if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
184 else qscale <<= 1;
185
186 if(s->alternate_scan) nCoeffs= 63;
187 else nCoeffs= s->block_last_index[n];
188
189 quant_matrix = s->inter_matrix;
190 for(i=0; i<=nCoeffs; i++) {
191 int j= s->intra_scantable.permutated[i];
192 level = block[j];
193 if (level) {
194 if (level < 0) {
195 level = -level;
196 level = (((level << 1) + 1) * qscale *
197 ((int) (quant_matrix[j]))) >> 5;
198 level = -level;
199 } else {
200 level = (((level << 1) + 1) * qscale *
201 ((int) (quant_matrix[j]))) >> 5;
202 }
203 block[j] = level;
204 sum+=level;
205 }
206 }
207 block[63]^=sum&1;
208 }
209
dct_unquantize_h263_intra_c(MpegEncContext * s,int16_t * block,int n,int qscale)210 static void dct_unquantize_h263_intra_c(MpegEncContext *s,
211 int16_t *block, int n, int qscale)
212 {
213 int i, level, qmul, qadd;
214 int nCoeffs;
215
216 av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
217
218 qmul = qscale << 1;
219
220 if (!s->h263_aic) {
221 block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
222 qadd = (qscale - 1) | 1;
223 }else{
224 qadd = 0;
225 }
226 if(s->ac_pred)
227 nCoeffs=63;
228 else
229 nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
230
231 for(i=1; i<=nCoeffs; i++) {
232 level = block[i];
233 if (level) {
234 if (level < 0) {
235 level = level * qmul - qadd;
236 } else {
237 level = level * qmul + qadd;
238 }
239 block[i] = level;
240 }
241 }
242 }
243
dct_unquantize_h263_inter_c(MpegEncContext * s,int16_t * block,int n,int qscale)244 static void dct_unquantize_h263_inter_c(MpegEncContext *s,
245 int16_t *block, int n, int qscale)
246 {
247 int i, level, qmul, qadd;
248 int nCoeffs;
249
250 av_assert2(s->block_last_index[n]>=0);
251
252 qadd = (qscale - 1) | 1;
253 qmul = qscale << 1;
254
255 nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
256
257 for(i=0; i<=nCoeffs; i++) {
258 level = block[i];
259 if (level) {
260 if (level < 0) {
261 level = level * qmul - qadd;
262 } else {
263 level = level * qmul + qadd;
264 }
265 block[i] = level;
266 }
267 }
268 }
269
270
gray16(uint8_t * dst,const uint8_t * src,ptrdiff_t linesize,int h)271 static void gray16(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
272 {
273 while(h--)
274 memset(dst + h*linesize, 128, 16);
275 }
276
gray8(uint8_t * dst,const uint8_t * src,ptrdiff_t linesize,int h)277 static void gray8(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
278 {
279 while(h--)
280 memset(dst + h*linesize, 128, 8);
281 }
282
283 /* init common dct for both encoder and decoder */
dct_init(MpegEncContext * s)284 static av_cold int dct_init(MpegEncContext *s)
285 {
286 ff_blockdsp_init(&s->bdsp, s->avctx);
287 ff_h264chroma_init(&s->h264chroma, 8); //for lowres
288 ff_hpeldsp_init(&s->hdsp, s->avctx->flags);
289 ff_mpegvideodsp_init(&s->mdsp);
290 ff_videodsp_init(&s->vdsp, s->avctx->bits_per_raw_sample);
291
292 if (s->avctx->debug & FF_DEBUG_NOMC) {
293 int i;
294 for (i=0; i<4; i++) {
295 s->hdsp.avg_pixels_tab[0][i] = gray16;
296 s->hdsp.put_pixels_tab[0][i] = gray16;
297 s->hdsp.put_no_rnd_pixels_tab[0][i] = gray16;
298
299 s->hdsp.avg_pixels_tab[1][i] = gray8;
300 s->hdsp.put_pixels_tab[1][i] = gray8;
301 s->hdsp.put_no_rnd_pixels_tab[1][i] = gray8;
302 }
303 }
304
305 s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_c;
306 s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_c;
307 s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_c;
308 s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_c;
309 s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_c;
310 if (s->avctx->flags & AV_CODEC_FLAG_BITEXACT)
311 s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_bitexact;
312 s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_c;
313
314 if (HAVE_INTRINSICS_NEON)
315 ff_mpv_common_init_neon(s);
316
317 if (ARCH_ALPHA)
318 ff_mpv_common_init_axp(s);
319 if (ARCH_ARM)
320 ff_mpv_common_init_arm(s);
321 if (ARCH_PPC)
322 ff_mpv_common_init_ppc(s);
323 if (ARCH_X86)
324 ff_mpv_common_init_x86(s);
325 if (ARCH_MIPS)
326 ff_mpv_common_init_mips(s);
327
328 return 0;
329 }
330
ff_mpv_idct_init(MpegEncContext * s)331 av_cold void ff_mpv_idct_init(MpegEncContext *s)
332 {
333 if (s->codec_id == AV_CODEC_ID_MPEG4)
334 s->idsp.mpeg4_studio_profile = s->studio_profile;
335 ff_idctdsp_init(&s->idsp, s->avctx);
336
337 /* load & permutate scantables
338 * note: only wmv uses different ones
339 */
340 if (s->alternate_scan) {
341 ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan);
342 ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan);
343 } else {
344 ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct);
345 ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
346 }
347 ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan);
348 ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
349 }
350
alloc_picture(MpegEncContext * s,Picture * pic)351 static int alloc_picture(MpegEncContext *s, Picture *pic)
352 {
353 return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, 0, 0,
354 s->chroma_x_shift, s->chroma_y_shift, s->out_format,
355 s->mb_stride, s->mb_width, s->mb_height, s->b8_stride,
356 &s->linesize, &s->uvlinesize);
357 }
358
init_duplicate_context(MpegEncContext * s)359 static int init_duplicate_context(MpegEncContext *s)
360 {
361 int y_size = s->b8_stride * (2 * s->mb_height + 1);
362 int c_size = s->mb_stride * (s->mb_height + 1);
363 int yc_size = y_size + 2 * c_size;
364 int i;
365
366 if (s->mb_height & 1)
367 yc_size += 2*s->b8_stride + 2*s->mb_stride;
368
369 if (s->encoding) {
370 if (!FF_ALLOCZ_TYPED_ARRAY(s->me.map, ME_MAP_SIZE) ||
371 !FF_ALLOCZ_TYPED_ARRAY(s->me.score_map, ME_MAP_SIZE))
372 return AVERROR(ENOMEM);
373
374 if (s->noise_reduction) {
375 if (!FF_ALLOCZ_TYPED_ARRAY(s->dct_error_sum, 2))
376 return AVERROR(ENOMEM);
377 }
378 }
379 if (!FF_ALLOCZ_TYPED_ARRAY(s->blocks, 2))
380 return AVERROR(ENOMEM);
381 s->block = s->blocks[0];
382
383 for (i = 0; i < 12; i++) {
384 s->pblocks[i] = &s->block[i];
385 }
386
387 if (!(s->block32 = av_mallocz(sizeof(*s->block32))) ||
388 !(s->dpcm_macroblock = av_mallocz(sizeof(*s->dpcm_macroblock))))
389 return AVERROR(ENOMEM);
390 s->dpcm_direction = 0;
391
392 if (s->avctx->codec_tag == AV_RL32("VCR2")) {
393 // exchange uv
394 FFSWAP(void *, s->pblocks[4], s->pblocks[5]);
395 }
396
397 if (s->out_format == FMT_H263) {
398 /* ac values */
399 if (!FF_ALLOCZ_TYPED_ARRAY(s->ac_val_base, yc_size))
400 return AVERROR(ENOMEM);
401 s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
402 s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
403 s->ac_val[2] = s->ac_val[1] + c_size;
404 }
405
406 return 0;
407 }
408
409 /**
410 * Initialize an MpegEncContext's thread contexts. Presumes that
411 * slice_context_count is already set and that all the fields
412 * that are freed/reset in free_duplicate_context() are NULL.
413 */
init_duplicate_contexts(MpegEncContext * s)414 static int init_duplicate_contexts(MpegEncContext *s)
415 {
416 int nb_slices = s->slice_context_count, ret;
417
418 /* We initialize the copies before the original so that
419 * fields allocated in init_duplicate_context are NULL after
420 * copying. This prevents double-frees upon allocation error. */
421 for (int i = 1; i < nb_slices; i++) {
422 s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
423 if (!s->thread_context[i])
424 return AVERROR(ENOMEM);
425 if ((ret = init_duplicate_context(s->thread_context[i])) < 0)
426 return ret;
427 s->thread_context[i]->start_mb_y =
428 (s->mb_height * (i ) + nb_slices / 2) / nb_slices;
429 s->thread_context[i]->end_mb_y =
430 (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
431 }
432 s->start_mb_y = 0;
433 s->end_mb_y = nb_slices > 1 ? (s->mb_height + nb_slices / 2) / nb_slices
434 : s->mb_height;
435 return init_duplicate_context(s);
436 }
437
free_duplicate_context(MpegEncContext * s)438 static void free_duplicate_context(MpegEncContext *s)
439 {
440 if (!s)
441 return;
442
443 av_freep(&s->sc.edge_emu_buffer);
444 av_freep(&s->me.scratchpad);
445 s->me.temp =
446 s->sc.rd_scratchpad =
447 s->sc.b_scratchpad =
448 s->sc.obmc_scratchpad = NULL;
449
450 av_freep(&s->dct_error_sum);
451 av_freep(&s->me.map);
452 av_freep(&s->me.score_map);
453 av_freep(&s->blocks);
454 av_freep(&s->block32);
455 av_freep(&s->dpcm_macroblock);
456 av_freep(&s->ac_val_base);
457 s->block = NULL;
458 }
459
free_duplicate_contexts(MpegEncContext * s)460 static void free_duplicate_contexts(MpegEncContext *s)
461 {
462 for (int i = 1; i < s->slice_context_count; i++) {
463 free_duplicate_context(s->thread_context[i]);
464 av_freep(&s->thread_context[i]);
465 }
466 free_duplicate_context(s);
467 }
468
backup_duplicate_context(MpegEncContext * bak,MpegEncContext * src)469 static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
470 {
471 #define COPY(a) bak->a = src->a
472 COPY(sc.edge_emu_buffer);
473 COPY(me.scratchpad);
474 COPY(me.temp);
475 COPY(sc.rd_scratchpad);
476 COPY(sc.b_scratchpad);
477 COPY(sc.obmc_scratchpad);
478 COPY(me.map);
479 COPY(me.score_map);
480 COPY(blocks);
481 COPY(block);
482 COPY(block32);
483 COPY(dpcm_macroblock);
484 COPY(dpcm_direction);
485 COPY(start_mb_y);
486 COPY(end_mb_y);
487 COPY(me.map_generation);
488 COPY(pb);
489 COPY(dct_error_sum);
490 COPY(dct_count[0]);
491 COPY(dct_count[1]);
492 COPY(ac_val_base);
493 COPY(ac_val[0]);
494 COPY(ac_val[1]);
495 COPY(ac_val[2]);
496 #undef COPY
497 }
498
ff_update_duplicate_context(MpegEncContext * dst,MpegEncContext * src)499 int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
500 {
501 MpegEncContext bak;
502 int i, ret;
503 // FIXME copy only needed parts
504 backup_duplicate_context(&bak, dst);
505 memcpy(dst, src, sizeof(MpegEncContext));
506 backup_duplicate_context(dst, &bak);
507 for (i = 0; i < 12; i++) {
508 dst->pblocks[i] = &dst->block[i];
509 }
510 if (dst->avctx->codec_tag == AV_RL32("VCR2")) {
511 // exchange uv
512 FFSWAP(void *, dst->pblocks[4], dst->pblocks[5]);
513 }
514 if (!dst->sc.edge_emu_buffer &&
515 (ret = ff_mpeg_framesize_alloc(dst->avctx, &dst->me,
516 &dst->sc, dst->linesize)) < 0) {
517 av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
518 "scratch buffers.\n");
519 return ret;
520 }
521 return 0;
522 }
523
ff_mpeg_update_thread_context(AVCodecContext * dst,const AVCodecContext * src)524 int ff_mpeg_update_thread_context(AVCodecContext *dst,
525 const AVCodecContext *src)
526 {
527 int i, ret;
528 MpegEncContext *s = dst->priv_data, *s1 = src->priv_data;
529
530 if (dst == src)
531 return 0;
532
533 av_assert0(s != s1);
534
535 // FIXME can parameters change on I-frames?
536 // in that case dst may need a reinit
537 if (!s->context_initialized) {
538 int err;
539 memcpy(s, s1, sizeof(MpegEncContext));
540
541 s->avctx = dst;
542 s->bitstream_buffer = NULL;
543 s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
544
545 if (s1->context_initialized){
546 // s->picture_range_start += MAX_PICTURE_COUNT;
547 // s->picture_range_end += MAX_PICTURE_COUNT;
548 ff_mpv_idct_init(s);
549 if((err = ff_mpv_common_init(s)) < 0){
550 memset(s, 0, sizeof(MpegEncContext));
551 s->avctx = dst;
552 return err;
553 }
554 }
555 }
556
557 if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
558 s->height = s1->height;
559 s->width = s1->width;
560 if ((ret = ff_mpv_common_frame_size_change(s)) < 0)
561 return ret;
562 }
563
564 s->avctx->coded_height = s1->avctx->coded_height;
565 s->avctx->coded_width = s1->avctx->coded_width;
566 s->avctx->width = s1->avctx->width;
567 s->avctx->height = s1->avctx->height;
568
569 s->quarter_sample = s1->quarter_sample;
570
571 s->coded_picture_number = s1->coded_picture_number;
572 s->picture_number = s1->picture_number;
573
574 av_assert0(!s->picture || s->picture != s1->picture);
575 if(s->picture)
576 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
577 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
578 if (s1->picture && s1->picture[i].f->buf[0] &&
579 (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
580 return ret;
581 }
582
583 #define UPDATE_PICTURE(pic)\
584 do {\
585 ff_mpeg_unref_picture(s->avctx, &s->pic);\
586 if (s1->pic.f && s1->pic.f->buf[0])\
587 ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
588 else\
589 ret = ff_update_picture_tables(&s->pic, &s1->pic);\
590 if (ret < 0)\
591 return ret;\
592 } while (0)
593
594 UPDATE_PICTURE(current_picture);
595 UPDATE_PICTURE(last_picture);
596 UPDATE_PICTURE(next_picture);
597
598 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
599 ((pic && pic >= old_ctx->picture && \
600 pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
601 &new_ctx->picture[pic - old_ctx->picture] : NULL)
602
603 s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1);
604 s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
605 s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1);
606
607 // Error/bug resilience
608 s->next_p_frame_damaged = s1->next_p_frame_damaged;
609 s->workaround_bugs = s1->workaround_bugs;
610 s->padding_bug_score = s1->padding_bug_score;
611
612 // MPEG-4 timing info
613 memcpy(&s->last_time_base, &s1->last_time_base,
614 (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
615 (char *) &s1->last_time_base);
616
617 // B-frame info
618 s->max_b_frames = s1->max_b_frames;
619 s->low_delay = s1->low_delay;
620 s->droppable = s1->droppable;
621
622 // DivX handling (doesn't work)
623 s->divx_packed = s1->divx_packed;
624
625 if (s1->bitstream_buffer) {
626 if (s1->bitstream_buffer_size +
627 AV_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size) {
628 av_fast_malloc(&s->bitstream_buffer,
629 &s->allocated_bitstream_buffer_size,
630 s1->allocated_bitstream_buffer_size);
631 if (!s->bitstream_buffer) {
632 s->bitstream_buffer_size = 0;
633 return AVERROR(ENOMEM);
634 }
635 }
636 s->bitstream_buffer_size = s1->bitstream_buffer_size;
637 memcpy(s->bitstream_buffer, s1->bitstream_buffer,
638 s1->bitstream_buffer_size);
639 memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
640 AV_INPUT_BUFFER_PADDING_SIZE);
641 }
642
643 // linesize-dependent scratch buffer allocation
644 if (!s->sc.edge_emu_buffer)
645 if (s1->linesize) {
646 if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
647 &s->sc, s1->linesize) < 0) {
648 av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
649 "scratch buffers.\n");
650 return AVERROR(ENOMEM);
651 }
652 } else {
653 av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
654 "be allocated due to unknown size.\n");
655 }
656
657 // MPEG-2/interlacing info
658 memcpy(&s->progressive_sequence, &s1->progressive_sequence,
659 (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
660
661 if (!s1->first_field) {
662 s->last_pict_type = s1->pict_type;
663 if (s1->current_picture_ptr)
664 s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f->quality;
665 }
666
667 return 0;
668 }
669
670 /**
671 * Set the given MpegEncContext to common defaults
672 * (same for encoding and decoding).
673 * The changed fields will not depend upon the
674 * prior state of the MpegEncContext.
675 */
ff_mpv_common_defaults(MpegEncContext * s)676 void ff_mpv_common_defaults(MpegEncContext *s)
677 {
678 s->y_dc_scale_table =
679 s->c_dc_scale_table = ff_mpeg1_dc_scale_table;
680 s->chroma_qscale_table = ff_default_chroma_qscale_table;
681 s->progressive_frame = 1;
682 s->progressive_sequence = 1;
683 s->picture_structure = PICT_FRAME;
684
685 s->coded_picture_number = 0;
686 s->picture_number = 0;
687
688 s->f_code = 1;
689 s->b_code = 1;
690
691 s->slice_context_count = 1;
692 }
693
694 /**
695 * Initialize the given MpegEncContext for decoding.
696 * the changed fields will not depend upon
697 * the prior state of the MpegEncContext.
698 */
ff_mpv_decode_init(MpegEncContext * s,AVCodecContext * avctx)699 void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
700 {
701 ff_mpv_common_defaults(s);
702
703 s->avctx = avctx;
704 s->width = avctx->coded_width;
705 s->height = avctx->coded_height;
706 s->codec_id = avctx->codec->id;
707 s->workaround_bugs = avctx->workaround_bugs;
708
709 /* convert fourcc to upper case */
710 s->codec_tag = avpriv_toupper4(avctx->codec_tag);
711 }
712
713 /**
714 * Initialize and allocates MpegEncContext fields dependent on the resolution.
715 */
init_context_frame(MpegEncContext * s)716 static int init_context_frame(MpegEncContext *s)
717 {
718 int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
719
720 s->mb_width = (s->width + 15) / 16;
721 s->mb_stride = s->mb_width + 1;
722 s->b8_stride = s->mb_width * 2 + 1;
723 mb_array_size = s->mb_height * s->mb_stride;
724 mv_table_size = (s->mb_height + 2) * s->mb_stride + 1;
725
726 /* set default edge pos, will be overridden
727 * in decode_header if needed */
728 s->h_edge_pos = s->mb_width * 16;
729 s->v_edge_pos = s->mb_height * 16;
730
731 s->mb_num = s->mb_width * s->mb_height;
732
733 s->block_wrap[0] =
734 s->block_wrap[1] =
735 s->block_wrap[2] =
736 s->block_wrap[3] = s->b8_stride;
737 s->block_wrap[4] =
738 s->block_wrap[5] = s->mb_stride;
739
740 y_size = s->b8_stride * (2 * s->mb_height + 1);
741 c_size = s->mb_stride * (s->mb_height + 1);
742 yc_size = y_size + 2 * c_size;
743
744 if (s->mb_height & 1)
745 yc_size += 2*s->b8_stride + 2*s->mb_stride;
746
747 if (!FF_ALLOCZ_TYPED_ARRAY(s->mb_index2xy, s->mb_num + 1))
748 return AVERROR(ENOMEM);
749 for (y = 0; y < s->mb_height; y++)
750 for (x = 0; x < s->mb_width; x++)
751 s->mb_index2xy[x + y * s->mb_width] = x + y * s->mb_stride;
752
753 s->mb_index2xy[s->mb_height * s->mb_width] = (s->mb_height - 1) * s->mb_stride + s->mb_width; // FIXME really needed?
754
755 if (s->encoding) {
756 /* Allocate MV tables */
757 if (!FF_ALLOCZ_TYPED_ARRAY(s->p_mv_table_base, mv_table_size) ||
758 !FF_ALLOCZ_TYPED_ARRAY(s->b_forw_mv_table_base, mv_table_size) ||
759 !FF_ALLOCZ_TYPED_ARRAY(s->b_back_mv_table_base, mv_table_size) ||
760 !FF_ALLOCZ_TYPED_ARRAY(s->b_bidir_forw_mv_table_base, mv_table_size) ||
761 !FF_ALLOCZ_TYPED_ARRAY(s->b_bidir_back_mv_table_base, mv_table_size) ||
762 !FF_ALLOCZ_TYPED_ARRAY(s->b_direct_mv_table_base, mv_table_size))
763 return AVERROR(ENOMEM);
764 s->p_mv_table = s->p_mv_table_base + s->mb_stride + 1;
765 s->b_forw_mv_table = s->b_forw_mv_table_base + s->mb_stride + 1;
766 s->b_back_mv_table = s->b_back_mv_table_base + s->mb_stride + 1;
767 s->b_bidir_forw_mv_table = s->b_bidir_forw_mv_table_base + s->mb_stride + 1;
768 s->b_bidir_back_mv_table = s->b_bidir_back_mv_table_base + s->mb_stride + 1;
769 s->b_direct_mv_table = s->b_direct_mv_table_base + s->mb_stride + 1;
770
771 /* Allocate MB type table */
772 if (!FF_ALLOCZ_TYPED_ARRAY(s->mb_type, mb_array_size) ||
773 !FF_ALLOCZ_TYPED_ARRAY(s->lambda_table, mb_array_size) ||
774 !FF_ALLOC_TYPED_ARRAY (s->cplx_tab, mb_array_size) ||
775 !FF_ALLOC_TYPED_ARRAY (s->bits_tab, mb_array_size))
776 return AVERROR(ENOMEM);
777 }
778
779 if (s->codec_id == AV_CODEC_ID_MPEG4 ||
780 (s->avctx->flags & AV_CODEC_FLAG_INTERLACED_ME)) {
781 /* interlaced direct mode decoding tables */
782 for (i = 0; i < 2; i++) {
783 int j, k;
784 for (j = 0; j < 2; j++) {
785 for (k = 0; k < 2; k++) {
786 if (!FF_ALLOCZ_TYPED_ARRAY(s->b_field_mv_table_base[i][j][k], mv_table_size))
787 return AVERROR(ENOMEM);
788 s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] +
789 s->mb_stride + 1;
790 }
791 if (!FF_ALLOCZ_TYPED_ARRAY(s->b_field_select_table [i][j], mv_table_size * 2) ||
792 !FF_ALLOCZ_TYPED_ARRAY(s->p_field_mv_table_base[i][j], mv_table_size))
793 return AVERROR(ENOMEM);
794 s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j] + s->mb_stride + 1;
795 }
796 if (!FF_ALLOCZ_TYPED_ARRAY(s->p_field_select_table[i], mv_table_size * 2))
797 return AVERROR(ENOMEM);
798 }
799 }
800 if (s->out_format == FMT_H263) {
801 /* cbp values, cbp, ac_pred, pred_dir */
802 if (!FF_ALLOCZ_TYPED_ARRAY(s->coded_block_base, y_size + (s->mb_height&1)*2*s->b8_stride) ||
803 !FF_ALLOCZ_TYPED_ARRAY(s->cbp_table, mb_array_size) ||
804 !FF_ALLOCZ_TYPED_ARRAY(s->pred_dir_table, mb_array_size))
805 return AVERROR(ENOMEM);
806 s->coded_block = s->coded_block_base + s->b8_stride + 1;
807 }
808
809 if (s->h263_pred || s->h263_plus || !s->encoding) {
810 /* dc values */
811 // MN: we need these for error resilience of intra-frames
812 if (!FF_ALLOCZ_TYPED_ARRAY(s->dc_val_base, yc_size))
813 return AVERROR(ENOMEM);
814 s->dc_val[0] = s->dc_val_base + s->b8_stride + 1;
815 s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1;
816 s->dc_val[2] = s->dc_val[1] + c_size;
817 for (i = 0; i < yc_size; i++)
818 s->dc_val_base[i] = 1024;
819 }
820
821 /* which mb is an intra block, init macroblock skip table */
822 if (!FF_ALLOC_TYPED_ARRAY(s->mbintra_table, mb_array_size) ||
823 // Note the + 1 is for a quicker MPEG-4 slice_end detection
824 !FF_ALLOCZ_TYPED_ARRAY(s->mbskip_table, mb_array_size + 2))
825 return AVERROR(ENOMEM);
826 memset(s->mbintra_table, 1, mb_array_size);
827
828 return ff_mpeg_er_init(s);
829 }
830
clear_context(MpegEncContext * s)831 static void clear_context(MpegEncContext *s)
832 {
833 int i, j, k;
834
835 memset(&s->next_picture, 0, sizeof(s->next_picture));
836 memset(&s->last_picture, 0, sizeof(s->last_picture));
837 memset(&s->current_picture, 0, sizeof(s->current_picture));
838 memset(&s->new_picture, 0, sizeof(s->new_picture));
839
840 memset(s->thread_context, 0, sizeof(s->thread_context));
841
842 s->me.map = NULL;
843 s->me.score_map = NULL;
844 s->dct_error_sum = NULL;
845 s->block = NULL;
846 s->blocks = NULL;
847 s->block32 = NULL;
848 memset(s->pblocks, 0, sizeof(s->pblocks));
849 s->dpcm_direction = 0;
850 s->dpcm_macroblock = NULL;
851 s->ac_val_base = NULL;
852 s->ac_val[0] =
853 s->ac_val[1] =
854 s->ac_val[2] =NULL;
855 s->sc.edge_emu_buffer = NULL;
856 s->me.scratchpad = NULL;
857 s->me.temp =
858 s->sc.rd_scratchpad =
859 s->sc.b_scratchpad =
860 s->sc.obmc_scratchpad = NULL;
861
862
863 s->bitstream_buffer = NULL;
864 s->allocated_bitstream_buffer_size = 0;
865 s->picture = NULL;
866 s->mb_type = NULL;
867 s->p_mv_table_base = NULL;
868 s->b_forw_mv_table_base = NULL;
869 s->b_back_mv_table_base = NULL;
870 s->b_bidir_forw_mv_table_base = NULL;
871 s->b_bidir_back_mv_table_base = NULL;
872 s->b_direct_mv_table_base = NULL;
873 s->p_mv_table = NULL;
874 s->b_forw_mv_table = NULL;
875 s->b_back_mv_table = NULL;
876 s->b_bidir_forw_mv_table = NULL;
877 s->b_bidir_back_mv_table = NULL;
878 s->b_direct_mv_table = NULL;
879 for (i = 0; i < 2; i++) {
880 for (j = 0; j < 2; j++) {
881 for (k = 0; k < 2; k++) {
882 s->b_field_mv_table_base[i][j][k] = NULL;
883 s->b_field_mv_table[i][j][k] = NULL;
884 }
885 s->b_field_select_table[i][j] = NULL;
886 s->p_field_mv_table_base[i][j] = NULL;
887 s->p_field_mv_table[i][j] = NULL;
888 }
889 s->p_field_select_table[i] = NULL;
890 }
891
892 s->dc_val_base = NULL;
893 s->coded_block_base = NULL;
894 s->mbintra_table = NULL;
895 s->cbp_table = NULL;
896 s->pred_dir_table = NULL;
897
898 s->mbskip_table = NULL;
899
900 s->er.error_status_table = NULL;
901 s->er.er_temp_buffer = NULL;
902 s->mb_index2xy = NULL;
903 s->lambda_table = NULL;
904
905 s->cplx_tab = NULL;
906 s->bits_tab = NULL;
907 }
908
909 /**
910 * init common structure for both encoder and decoder.
911 * this assumes that some variables like width/height are already set
912 */
ff_mpv_common_init(MpegEncContext * s)913 av_cold int ff_mpv_common_init(MpegEncContext *s)
914 {
915 int i, ret;
916 int nb_slices = (HAVE_THREADS &&
917 s->avctx->active_thread_type & FF_THREAD_SLICE) ?
918 s->avctx->thread_count : 1;
919
920 clear_context(s);
921
922 if (s->encoding && s->avctx->slices)
923 nb_slices = s->avctx->slices;
924
925 if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
926 s->mb_height = (s->height + 31) / 32 * 2;
927 else
928 s->mb_height = (s->height + 15) / 16;
929
930 if (s->avctx->pix_fmt == AV_PIX_FMT_NONE) {
931 av_log(s->avctx, AV_LOG_ERROR,
932 "decoding to AV_PIX_FMT_NONE is not supported.\n");
933 return AVERROR(EINVAL);
934 }
935
936 if (nb_slices > MAX_THREADS || (nb_slices > s->mb_height && s->mb_height)) {
937 int max_slices;
938 if (s->mb_height)
939 max_slices = FFMIN(MAX_THREADS, s->mb_height);
940 else
941 max_slices = MAX_THREADS;
942 av_log(s->avctx, AV_LOG_WARNING, "too many threads/slices (%d),"
943 " reducing to %d\n", nb_slices, max_slices);
944 nb_slices = max_slices;
945 }
946
947 if ((s->width || s->height) &&
948 av_image_check_size(s->width, s->height, 0, s->avctx))
949 return AVERROR(EINVAL);
950
951 dct_init(s);
952
953 /* set chroma shifts */
954 ret = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
955 &s->chroma_x_shift,
956 &s->chroma_y_shift);
957 if (ret)
958 return ret;
959
960 if (!FF_ALLOCZ_TYPED_ARRAY(s->picture, MAX_PICTURE_COUNT))
961 return AVERROR(ENOMEM);
962 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
963 s->picture[i].f = av_frame_alloc();
964 if (!s->picture[i].f)
965 goto fail_nomem;
966 }
967
968 if (!(s->next_picture.f = av_frame_alloc()) ||
969 !(s->last_picture.f = av_frame_alloc()) ||
970 !(s->current_picture.f = av_frame_alloc()) ||
971 !(s->new_picture.f = av_frame_alloc()))
972 goto fail_nomem;
973
974 if ((ret = init_context_frame(s)))
975 goto fail;
976
977 s->parse_context.state = -1;
978
979 s->context_initialized = 1;
980 memset(s->thread_context, 0, sizeof(s->thread_context));
981 s->thread_context[0] = s;
982 s->slice_context_count = nb_slices;
983
984 // if (s->width && s->height) {
985 ret = init_duplicate_contexts(s);
986 if (ret < 0)
987 goto fail;
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 * as well as the slice thread contexts.
1001 * Is used during resolution changes to avoid a full reinitialization of the
1002 * codec.
1003 */
free_context_frame(MpegEncContext * s)1004 static void free_context_frame(MpegEncContext *s)
1005 {
1006 int i, j, k;
1007
1008 free_duplicate_contexts(s);
1009
1010 av_freep(&s->mb_type);
1011 av_freep(&s->p_mv_table_base);
1012 av_freep(&s->b_forw_mv_table_base);
1013 av_freep(&s->b_back_mv_table_base);
1014 av_freep(&s->b_bidir_forw_mv_table_base);
1015 av_freep(&s->b_bidir_back_mv_table_base);
1016 av_freep(&s->b_direct_mv_table_base);
1017 s->p_mv_table = NULL;
1018 s->b_forw_mv_table = NULL;
1019 s->b_back_mv_table = NULL;
1020 s->b_bidir_forw_mv_table = NULL;
1021 s->b_bidir_back_mv_table = NULL;
1022 s->b_direct_mv_table = NULL;
1023 for (i = 0; i < 2; i++) {
1024 for (j = 0; j < 2; j++) {
1025 for (k = 0; k < 2; k++) {
1026 av_freep(&s->b_field_mv_table_base[i][j][k]);
1027 s->b_field_mv_table[i][j][k] = NULL;
1028 }
1029 av_freep(&s->b_field_select_table[i][j]);
1030 av_freep(&s->p_field_mv_table_base[i][j]);
1031 s->p_field_mv_table[i][j] = NULL;
1032 }
1033 av_freep(&s->p_field_select_table[i]);
1034 }
1035
1036 av_freep(&s->dc_val_base);
1037 av_freep(&s->coded_block_base);
1038 av_freep(&s->mbintra_table);
1039 av_freep(&s->cbp_table);
1040 av_freep(&s->pred_dir_table);
1041
1042 av_freep(&s->mbskip_table);
1043
1044 av_freep(&s->er.error_status_table);
1045 av_freep(&s->er.er_temp_buffer);
1046 av_freep(&s->mb_index2xy);
1047 av_freep(&s->lambda_table);
1048
1049 av_freep(&s->cplx_tab);
1050 av_freep(&s->bits_tab);
1051
1052 s->linesize = s->uvlinesize = 0;
1053 }
1054
ff_mpv_common_frame_size_change(MpegEncContext * s)1055 int ff_mpv_common_frame_size_change(MpegEncContext *s)
1056 {
1057 int i, err = 0;
1058
1059 if (!s->context_initialized)
1060 return AVERROR(EINVAL);
1061
1062 free_context_frame(s);
1063
1064 if (s->picture)
1065 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1066 s->picture[i].needs_realloc = 1;
1067 }
1068
1069 s->last_picture_ptr =
1070 s->next_picture_ptr =
1071 s->current_picture_ptr = NULL;
1072
1073 // init
1074 if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
1075 s->mb_height = (s->height + 31) / 32 * 2;
1076 else
1077 s->mb_height = (s->height + 15) / 16;
1078
1079 if ((s->width || s->height) &&
1080 (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
1081 goto fail;
1082
1083 /* set chroma shifts */
1084 err = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
1085 &s->chroma_x_shift,
1086 &s->chroma_y_shift);
1087 if (err < 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 err = init_duplicate_contexts(s);
1098 if (err < 0)
1099 goto fail;
1100 }
1101 s->context_reinit = 0;
1102
1103 return 0;
1104 fail:
1105 free_context_frame(s);
1106 s->context_reinit = 1;
1107 return err;
1108 }
1109
1110 /* init common structure for both encoder and decoder */
ff_mpv_common_end(MpegEncContext * s)1111 void ff_mpv_common_end(MpegEncContext *s)
1112 {
1113 int i;
1114
1115 if (!s)
1116 return;
1117
1118 free_context_frame(s);
1119 if (s->slice_context_count > 1)
1120 s->slice_context_count = 1;
1121
1122 av_freep(&s->parse_context.buffer);
1123 s->parse_context.buffer_size = 0;
1124
1125 av_freep(&s->bitstream_buffer);
1126 s->allocated_bitstream_buffer_size = 0;
1127
1128 if (!s->avctx)
1129 return;
1130
1131 if (s->picture) {
1132 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1133 ff_free_picture_tables(&s->picture[i]);
1134 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1135 av_frame_free(&s->picture[i].f);
1136 }
1137 }
1138 av_freep(&s->picture);
1139 ff_free_picture_tables(&s->last_picture);
1140 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
1141 av_frame_free(&s->last_picture.f);
1142 ff_free_picture_tables(&s->current_picture);
1143 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
1144 av_frame_free(&s->current_picture.f);
1145 ff_free_picture_tables(&s->next_picture);
1146 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
1147 av_frame_free(&s->next_picture.f);
1148 ff_free_picture_tables(&s->new_picture);
1149 ff_mpeg_unref_picture(s->avctx, &s->new_picture);
1150 av_frame_free(&s->new_picture.f);
1151
1152 s->context_initialized = 0;
1153 s->context_reinit = 0;
1154 s->last_picture_ptr =
1155 s->next_picture_ptr =
1156 s->current_picture_ptr = NULL;
1157 s->linesize = s->uvlinesize = 0;
1158 }
1159
1160
gray_frame(AVFrame * frame)1161 static void gray_frame(AVFrame *frame)
1162 {
1163 int i, h_chroma_shift, v_chroma_shift;
1164
1165 av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift);
1166
1167 for(i=0; i<frame->height; i++)
1168 memset(frame->data[0] + frame->linesize[0]*i, 0x80, frame->width);
1169 for(i=0; i<AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) {
1170 memset(frame->data[1] + frame->linesize[1]*i,
1171 0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1172 memset(frame->data[2] + frame->linesize[2]*i,
1173 0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1174 }
1175 }
1176
1177 /**
1178 * generic function called after decoding
1179 * the header and before a frame is decoded.
1180 */
ff_mpv_frame_start(MpegEncContext * s,AVCodecContext * avctx)1181 int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
1182 {
1183 int i, ret;
1184 Picture *pic;
1185 s->mb_skipped = 0;
1186
1187 if (!ff_thread_can_start_frame(avctx)) {
1188 av_log(avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
1189 return -1;
1190 }
1191
1192 /* mark & release old frames */
1193 if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
1194 s->last_picture_ptr != s->next_picture_ptr &&
1195 s->last_picture_ptr->f->buf[0]) {
1196 ff_mpeg_unref_picture(s->avctx, s->last_picture_ptr);
1197 }
1198
1199 /* release forgotten pictures */
1200 /* if (MPEG-124 / H.263) */
1201 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1202 if (&s->picture[i] != s->last_picture_ptr &&
1203 &s->picture[i] != s->next_picture_ptr &&
1204 s->picture[i].reference && !s->picture[i].needs_realloc) {
1205 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1206 }
1207 }
1208
1209 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
1210 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
1211 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
1212
1213 /* release non reference frames */
1214 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1215 if (!s->picture[i].reference)
1216 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1217 }
1218
1219 if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
1220 // we already have an unused image
1221 // (maybe it was set before reading the header)
1222 pic = s->current_picture_ptr;
1223 } else {
1224 i = ff_find_unused_picture(s->avctx, s->picture, 0);
1225 if (i < 0) {
1226 av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1227 return i;
1228 }
1229 pic = &s->picture[i];
1230 }
1231
1232 pic->reference = 0;
1233 if (!s->droppable) {
1234 if (s->pict_type != AV_PICTURE_TYPE_B)
1235 pic->reference = 3;
1236 }
1237
1238 pic->f->coded_picture_number = s->coded_picture_number++;
1239
1240 if (alloc_picture(s, pic) < 0)
1241 return -1;
1242
1243 s->current_picture_ptr = pic;
1244 // FIXME use only the vars from current_pic
1245 s->current_picture_ptr->f->top_field_first = s->top_field_first;
1246 if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
1247 s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1248 if (s->picture_structure != PICT_FRAME)
1249 s->current_picture_ptr->f->top_field_first =
1250 (s->picture_structure == PICT_TOP_FIELD) == s->first_field;
1251 }
1252 s->current_picture_ptr->f->interlaced_frame = !s->progressive_frame &&
1253 !s->progressive_sequence;
1254 s->current_picture_ptr->field_picture = s->picture_structure != PICT_FRAME;
1255
1256 s->current_picture_ptr->f->pict_type = s->pict_type;
1257 // if (s->avctx->flags && AV_CODEC_FLAG_QSCALE)
1258 // s->current_picture_ptr->quality = s->new_picture_ptr->quality;
1259 s->current_picture_ptr->f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
1260
1261 if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
1262 s->current_picture_ptr)) < 0)
1263 return ret;
1264
1265 if (s->pict_type != AV_PICTURE_TYPE_B) {
1266 s->last_picture_ptr = s->next_picture_ptr;
1267 if (!s->droppable)
1268 s->next_picture_ptr = s->current_picture_ptr;
1269 }
1270 ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
1271 s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
1272 s->last_picture_ptr ? s->last_picture_ptr->f->data[0] : NULL,
1273 s->next_picture_ptr ? s->next_picture_ptr->f->data[0] : NULL,
1274 s->current_picture_ptr ? s->current_picture_ptr->f->data[0] : NULL,
1275 s->pict_type, s->droppable);
1276
1277 if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
1278 (s->pict_type != AV_PICTURE_TYPE_I)) {
1279 int h_chroma_shift, v_chroma_shift;
1280 av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
1281 &h_chroma_shift, &v_chroma_shift);
1282 if (s->pict_type == AV_PICTURE_TYPE_B && s->next_picture_ptr && s->next_picture_ptr->f->buf[0])
1283 av_log(avctx, AV_LOG_DEBUG,
1284 "allocating dummy last picture for B frame\n");
1285 else if (s->pict_type != AV_PICTURE_TYPE_I)
1286 av_log(avctx, AV_LOG_ERROR,
1287 "warning: first frame is no keyframe\n");
1288
1289 /* Allocate a dummy frame */
1290 i = ff_find_unused_picture(s->avctx, s->picture, 0);
1291 if (i < 0) {
1292 av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1293 return i;
1294 }
1295 s->last_picture_ptr = &s->picture[i];
1296
1297 s->last_picture_ptr->reference = 3;
1298 s->last_picture_ptr->f->key_frame = 0;
1299 s->last_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
1300
1301 if (alloc_picture(s, s->last_picture_ptr) < 0) {
1302 s->last_picture_ptr = NULL;
1303 return -1;
1304 }
1305
1306 if (!avctx->hwaccel) {
1307 for(i=0; i<avctx->height; i++)
1308 memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i,
1309 0x80, avctx->width);
1310 if (s->last_picture_ptr->f->data[2]) {
1311 for(i=0; i<AV_CEIL_RSHIFT(avctx->height, v_chroma_shift); i++) {
1312 memset(s->last_picture_ptr->f->data[1] + s->last_picture_ptr->f->linesize[1]*i,
1313 0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1314 memset(s->last_picture_ptr->f->data[2] + s->last_picture_ptr->f->linesize[2]*i,
1315 0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1316 }
1317 }
1318
1319 if(s->codec_id == AV_CODEC_ID_FLV1 || s->codec_id == AV_CODEC_ID_H263){
1320 for(i=0; i<avctx->height; i++)
1321 memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i, 16, avctx->width);
1322 }
1323 }
1324
1325 ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
1326 ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
1327 }
1328 if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) &&
1329 s->pict_type == AV_PICTURE_TYPE_B) {
1330 /* Allocate a dummy frame */
1331 i = ff_find_unused_picture(s->avctx, s->picture, 0);
1332 if (i < 0) {
1333 av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1334 return i;
1335 }
1336 s->next_picture_ptr = &s->picture[i];
1337
1338 s->next_picture_ptr->reference = 3;
1339 s->next_picture_ptr->f->key_frame = 0;
1340 s->next_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
1341
1342 if (alloc_picture(s, s->next_picture_ptr) < 0) {
1343 s->next_picture_ptr = NULL;
1344 return -1;
1345 }
1346 ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
1347 ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
1348 }
1349
1350 #if 0 // BUFREF-FIXME
1351 memset(s->last_picture.f->data, 0, sizeof(s->last_picture.f->data));
1352 memset(s->next_picture.f->data, 0, sizeof(s->next_picture.f->data));
1353 #endif
1354 if (s->last_picture_ptr) {
1355 if (s->last_picture_ptr->f->buf[0] &&
1356 (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
1357 s->last_picture_ptr)) < 0)
1358 return ret;
1359 }
1360 if (s->next_picture_ptr) {
1361 if (s->next_picture_ptr->f->buf[0] &&
1362 (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
1363 s->next_picture_ptr)) < 0)
1364 return ret;
1365 }
1366
1367 av_assert0(s->pict_type == AV_PICTURE_TYPE_I || (s->last_picture_ptr &&
1368 s->last_picture_ptr->f->buf[0]));
1369
1370 if (s->picture_structure!= PICT_FRAME) {
1371 int i;
1372 for (i = 0; i < 4; i++) {
1373 if (s->picture_structure == PICT_BOTTOM_FIELD) {
1374 s->current_picture.f->data[i] +=
1375 s->current_picture.f->linesize[i];
1376 }
1377 s->current_picture.f->linesize[i] *= 2;
1378 s->last_picture.f->linesize[i] *= 2;
1379 s->next_picture.f->linesize[i] *= 2;
1380 }
1381 }
1382
1383 /* set dequantizer, we can't do it during init as
1384 * it might change for MPEG-4 and we can't do it in the header
1385 * decode as init is not called for MPEG-4 there yet */
1386 if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1387 s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
1388 s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
1389 } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
1390 s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
1391 s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
1392 } else {
1393 s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra;
1394 s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
1395 }
1396
1397 if (s->avctx->debug & FF_DEBUG_NOMC) {
1398 gray_frame(s->current_picture_ptr->f);
1399 }
1400
1401 return 0;
1402 }
1403
1404 /* called after a frame has been decoded. */
ff_mpv_frame_end(MpegEncContext * s)1405 void ff_mpv_frame_end(MpegEncContext *s)
1406 {
1407 emms_c();
1408
1409 if (s->current_picture.reference)
1410 ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
1411 }
1412
ff_print_debug_info(MpegEncContext * s,Picture * p,AVFrame * pict)1413 void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
1414 {
1415 ff_print_debug_info2(s->avctx, pict, s->mbskip_table, p->mb_type,
1416 p->qscale_table, p->motion_val, &s->low_delay,
1417 s->mb_width, s->mb_height, s->mb_stride, s->quarter_sample);
1418 }
1419
ff_mpv_export_qp_table(MpegEncContext * s,AVFrame * f,Picture * p,int qp_type)1420 int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
1421 {
1422 AVVideoEncParams *par;
1423 int mult = (qp_type == FF_QSCALE_TYPE_MPEG1) ? 2 : 1;
1424 unsigned int nb_mb = p->alloc_mb_height * p->alloc_mb_width;
1425 unsigned int x, y;
1426
1427 if (!(s->avctx->export_side_data & AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS))
1428 return 0;
1429
1430 par = av_video_enc_params_create_side_data(f, AV_VIDEO_ENC_PARAMS_MPEG2, nb_mb);
1431 if (!par)
1432 return AVERROR(ENOMEM);
1433
1434 for (y = 0; y < p->alloc_mb_height; y++)
1435 for (x = 0; x < p->alloc_mb_width; x++) {
1436 const unsigned int block_idx = y * p->alloc_mb_width + x;
1437 const unsigned int mb_xy = y * p->alloc_mb_stride + x;
1438 AVVideoBlockParams *b = av_video_enc_params_block(par, block_idx);
1439
1440 b->src_x = x * 16;
1441 b->src_y = y * 16;
1442 b->w = 16;
1443 b->h = 16;
1444
1445 b->delta_qp = p->qscale_table[mb_xy] * mult;
1446 }
1447
1448 return 0;
1449 }
1450
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)1451 static inline int hpel_motion_lowres(MpegEncContext *s,
1452 uint8_t *dest, uint8_t *src,
1453 int field_based, int field_select,
1454 int src_x, int src_y,
1455 int width, int height, ptrdiff_t stride,
1456 int h_edge_pos, int v_edge_pos,
1457 int w, int h, h264_chroma_mc_func *pix_op,
1458 int motion_x, int motion_y)
1459 {
1460 const int lowres = s->avctx->lowres;
1461 const int op_index = FFMIN(lowres, 3);
1462 const int s_mask = (2 << lowres) - 1;
1463 int emu = 0;
1464 int sx, sy;
1465
1466 if (s->quarter_sample) {
1467 motion_x /= 2;
1468 motion_y /= 2;
1469 }
1470
1471 sx = motion_x & s_mask;
1472 sy = motion_y & s_mask;
1473 src_x += motion_x >> lowres + 1;
1474 src_y += motion_y >> lowres + 1;
1475
1476 src += src_y * stride + src_x;
1477
1478 if ((unsigned)src_x > FFMAX( h_edge_pos - (!!sx) - w, 0) ||
1479 (unsigned)src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1480 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, src,
1481 s->linesize, s->linesize,
1482 w + 1, (h + 1) << field_based,
1483 src_x, src_y << field_based,
1484 h_edge_pos, v_edge_pos);
1485 src = s->sc.edge_emu_buffer;
1486 emu = 1;
1487 }
1488
1489 sx = (sx << 2) >> lowres;
1490 sy = (sy << 2) >> lowres;
1491 if (field_select)
1492 src += s->linesize;
1493 pix_op[op_index](dest, src, stride, h, sx, sy);
1494 return emu;
1495 }
1496
1497 /* 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)1498 static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
1499 uint8_t *dest_y,
1500 uint8_t *dest_cb,
1501 uint8_t *dest_cr,
1502 int field_based,
1503 int bottom_field,
1504 int field_select,
1505 uint8_t **ref_picture,
1506 h264_chroma_mc_func *pix_op,
1507 int motion_x, int motion_y,
1508 int h, int mb_y)
1509 {
1510 uint8_t *ptr_y, *ptr_cb, *ptr_cr;
1511 int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, sx, sy, uvsx, uvsy;
1512 ptrdiff_t uvlinesize, linesize;
1513 const int lowres = s->avctx->lowres;
1514 const int op_index = FFMIN(lowres-1+s->chroma_x_shift, 3);
1515 const int block_s = 8>>lowres;
1516 const int s_mask = (2 << lowres) - 1;
1517 const int h_edge_pos = s->h_edge_pos >> lowres;
1518 const int v_edge_pos = s->v_edge_pos >> lowres;
1519 linesize = s->current_picture.f->linesize[0] << field_based;
1520 uvlinesize = s->current_picture.f->linesize[1] << field_based;
1521
1522 // FIXME obviously not perfect but qpel will not work in lowres anyway
1523 if (s->quarter_sample) {
1524 motion_x /= 2;
1525 motion_y /= 2;
1526 }
1527
1528 if(field_based){
1529 motion_y += (bottom_field - field_select)*((1 << lowres)-1);
1530 }
1531
1532 sx = motion_x & s_mask;
1533 sy = motion_y & s_mask;
1534 src_x = s->mb_x * 2 * block_s + (motion_x >> lowres + 1);
1535 src_y = (mb_y * 2 * block_s >> field_based) + (motion_y >> lowres + 1);
1536
1537 if (s->out_format == FMT_H263) {
1538 uvsx = ((motion_x >> 1) & s_mask) | (sx & 1);
1539 uvsy = ((motion_y >> 1) & s_mask) | (sy & 1);
1540 uvsrc_x = src_x >> 1;
1541 uvsrc_y = src_y >> 1;
1542 } else if (s->out_format == FMT_H261) {
1543 // even chroma mv's are full pel in H261
1544 mx = motion_x / 4;
1545 my = motion_y / 4;
1546 uvsx = (2 * mx) & s_mask;
1547 uvsy = (2 * my) & s_mask;
1548 uvsrc_x = s->mb_x * block_s + (mx >> lowres);
1549 uvsrc_y = mb_y * block_s + (my >> lowres);
1550 } else {
1551 if(s->chroma_y_shift){
1552 mx = motion_x / 2;
1553 my = motion_y / 2;
1554 uvsx = mx & s_mask;
1555 uvsy = my & s_mask;
1556 uvsrc_x = s->mb_x * block_s + (mx >> lowres + 1);
1557 uvsrc_y = (mb_y * block_s >> field_based) + (my >> lowres + 1);
1558 } else {
1559 if(s->chroma_x_shift){
1560 //Chroma422
1561 mx = motion_x / 2;
1562 uvsx = mx & s_mask;
1563 uvsy = motion_y & s_mask;
1564 uvsrc_y = src_y;
1565 uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
1566 } else {
1567 //Chroma444
1568 uvsx = motion_x & s_mask;
1569 uvsy = motion_y & s_mask;
1570 uvsrc_x = src_x;
1571 uvsrc_y = src_y;
1572 }
1573 }
1574 }
1575
1576 ptr_y = ref_picture[0] + src_y * linesize + src_x;
1577 ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
1578 ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
1579
1580 if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s, 0) || uvsrc_y<0 ||
1581 (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1582 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
1583 linesize >> field_based, linesize >> field_based,
1584 17, 17 + field_based,
1585 src_x, src_y << field_based, h_edge_pos,
1586 v_edge_pos);
1587 ptr_y = s->sc.edge_emu_buffer;
1588 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1589 uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
1590 uint8_t *vbuf =ubuf + 10 * s->uvlinesize;
1591 if (s->workaround_bugs & FF_BUG_IEDGE)
1592 vbuf -= s->uvlinesize;
1593 s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
1594 uvlinesize >> field_based, uvlinesize >> field_based,
1595 9, 9 + field_based,
1596 uvsrc_x, uvsrc_y << field_based,
1597 h_edge_pos >> 1, v_edge_pos >> 1);
1598 s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
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 ptr_cb = ubuf;
1604 ptr_cr = vbuf;
1605 }
1606 }
1607
1608 // FIXME use this for field pix too instead of the obnoxious hack which changes picture.f->data
1609 if (bottom_field) {
1610 dest_y += s->linesize;
1611 dest_cb += s->uvlinesize;
1612 dest_cr += s->uvlinesize;
1613 }
1614
1615 if (field_select) {
1616 ptr_y += s->linesize;
1617 ptr_cb += s->uvlinesize;
1618 ptr_cr += s->uvlinesize;
1619 }
1620
1621 sx = (sx << 2) >> lowres;
1622 sy = (sy << 2) >> lowres;
1623 pix_op[lowres - 1](dest_y, ptr_y, linesize, h, sx, sy);
1624
1625 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1626 int hc = s->chroma_y_shift ? (h+1-bottom_field)>>1 : h;
1627 uvsx = (uvsx << 2) >> lowres;
1628 uvsy = (uvsy << 2) >> lowres;
1629 if (hc) {
1630 pix_op[op_index](dest_cb, ptr_cb, uvlinesize, hc, uvsx, uvsy);
1631 pix_op[op_index](dest_cr, ptr_cr, uvlinesize, hc, uvsx, uvsy);
1632 }
1633 }
1634 // FIXME h261 lowres loop filter
1635 }
1636
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)1637 static inline void chroma_4mv_motion_lowres(MpegEncContext *s,
1638 uint8_t *dest_cb, uint8_t *dest_cr,
1639 uint8_t **ref_picture,
1640 h264_chroma_mc_func * pix_op,
1641 int mx, int my)
1642 {
1643 const int lowres = s->avctx->lowres;
1644 const int op_index = FFMIN(lowres, 3);
1645 const int block_s = 8 >> lowres;
1646 const int s_mask = (2 << lowres) - 1;
1647 const int h_edge_pos = s->h_edge_pos >> lowres + 1;
1648 const int v_edge_pos = s->v_edge_pos >> lowres + 1;
1649 int emu = 0, src_x, src_y, sx, sy;
1650 ptrdiff_t offset;
1651 uint8_t *ptr;
1652
1653 if (s->quarter_sample) {
1654 mx /= 2;
1655 my /= 2;
1656 }
1657
1658 /* In case of 8X8, we construct a single chroma motion vector
1659 with a special rounding */
1660 mx = ff_h263_round_chroma(mx);
1661 my = ff_h263_round_chroma(my);
1662
1663 sx = mx & s_mask;
1664 sy = my & s_mask;
1665 src_x = s->mb_x * block_s + (mx >> lowres + 1);
1666 src_y = s->mb_y * block_s + (my >> lowres + 1);
1667
1668 offset = src_y * s->uvlinesize + src_x;
1669 ptr = ref_picture[1] + offset;
1670 if ((unsigned) src_x > FFMAX(h_edge_pos - (!!sx) - block_s, 0) ||
1671 (unsigned) src_y > FFMAX(v_edge_pos - (!!sy) - block_s, 0)) {
1672 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
1673 s->uvlinesize, s->uvlinesize,
1674 9, 9,
1675 src_x, src_y, h_edge_pos, v_edge_pos);
1676 ptr = s->sc.edge_emu_buffer;
1677 emu = 1;
1678 }
1679 sx = (sx << 2) >> lowres;
1680 sy = (sy << 2) >> lowres;
1681 pix_op[op_index](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
1682
1683 ptr = ref_picture[2] + offset;
1684 if (emu) {
1685 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
1686 s->uvlinesize, s->uvlinesize,
1687 9, 9,
1688 src_x, src_y, h_edge_pos, v_edge_pos);
1689 ptr = s->sc.edge_emu_buffer;
1690 }
1691 pix_op[op_index](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
1692 }
1693
1694 /**
1695 * motion compensation of a single macroblock
1696 * @param s context
1697 * @param dest_y luma destination pointer
1698 * @param dest_cb chroma cb/u destination pointer
1699 * @param dest_cr chroma cr/v destination pointer
1700 * @param dir direction (0->forward, 1->backward)
1701 * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
1702 * @param pix_op halfpel motion compensation function (average or put normally)
1703 * the motion vectors are taken from s->mv and the MV type from s->mv_type
1704 */
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)1705 static inline void MPV_motion_lowres(MpegEncContext *s,
1706 uint8_t *dest_y, uint8_t *dest_cb,
1707 uint8_t *dest_cr,
1708 int dir, uint8_t **ref_picture,
1709 h264_chroma_mc_func *pix_op)
1710 {
1711 int mx, my;
1712 int mb_x, mb_y, i;
1713 const int lowres = s->avctx->lowres;
1714 const int block_s = 8 >>lowres;
1715
1716 mb_x = s->mb_x;
1717 mb_y = s->mb_y;
1718
1719 switch (s->mv_type) {
1720 case MV_TYPE_16X16:
1721 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1722 0, 0, 0,
1723 ref_picture, pix_op,
1724 s->mv[dir][0][0], s->mv[dir][0][1],
1725 2 * block_s, mb_y);
1726 break;
1727 case MV_TYPE_8X8:
1728 mx = 0;
1729 my = 0;
1730 for (i = 0; i < 4; i++) {
1731 hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) *
1732 s->linesize) * block_s,
1733 ref_picture[0], 0, 0,
1734 (2 * mb_x + (i & 1)) * block_s,
1735 (2 * mb_y + (i >> 1)) * block_s,
1736 s->width, s->height, s->linesize,
1737 s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
1738 block_s, block_s, pix_op,
1739 s->mv[dir][i][0], s->mv[dir][i][1]);
1740
1741 mx += s->mv[dir][i][0];
1742 my += s->mv[dir][i][1];
1743 }
1744
1745 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))
1746 chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture,
1747 pix_op, mx, my);
1748 break;
1749 case MV_TYPE_FIELD:
1750 if (s->picture_structure == PICT_FRAME) {
1751 /* top field */
1752 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1753 1, 0, s->field_select[dir][0],
1754 ref_picture, pix_op,
1755 s->mv[dir][0][0], s->mv[dir][0][1],
1756 block_s, mb_y);
1757 /* bottom field */
1758 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1759 1, 1, s->field_select[dir][1],
1760 ref_picture, pix_op,
1761 s->mv[dir][1][0], s->mv[dir][1][1],
1762 block_s, mb_y);
1763 } else {
1764 if (s->picture_structure != s->field_select[dir][0] + 1 &&
1765 s->pict_type != AV_PICTURE_TYPE_B && !s->first_field) {
1766 ref_picture = s->current_picture_ptr->f->data;
1767
1768 }
1769 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1770 0, 0, s->field_select[dir][0],
1771 ref_picture, pix_op,
1772 s->mv[dir][0][0],
1773 s->mv[dir][0][1], 2 * block_s, mb_y >> 1);
1774 }
1775 break;
1776 case MV_TYPE_16X8:
1777 for (i = 0; i < 2; i++) {
1778 uint8_t **ref2picture;
1779
1780 if (s->picture_structure == s->field_select[dir][i] + 1 ||
1781 s->pict_type == AV_PICTURE_TYPE_B || s->first_field) {
1782 ref2picture = ref_picture;
1783 } else {
1784 ref2picture = s->current_picture_ptr->f->data;
1785 }
1786
1787 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1788 0, 0, s->field_select[dir][i],
1789 ref2picture, pix_op,
1790 s->mv[dir][i][0], s->mv[dir][i][1] +
1791 2 * block_s * i, block_s, mb_y >> 1);
1792
1793 dest_y += 2 * block_s * s->linesize;
1794 dest_cb += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
1795 dest_cr += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
1796 }
1797 break;
1798 case MV_TYPE_DMV:
1799 if (s->picture_structure == PICT_FRAME) {
1800 for (i = 0; i < 2; i++) {
1801 int j;
1802 for (j = 0; j < 2; j++) {
1803 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1804 1, j, j ^ i,
1805 ref_picture, pix_op,
1806 s->mv[dir][2 * i + j][0],
1807 s->mv[dir][2 * i + j][1],
1808 block_s, mb_y);
1809 }
1810 pix_op = s->h264chroma.avg_h264_chroma_pixels_tab;
1811 }
1812 } else {
1813 for (i = 0; i < 2; i++) {
1814 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1815 0, 0, s->picture_structure != i + 1,
1816 ref_picture, pix_op,
1817 s->mv[dir][2 * i][0],s->mv[dir][2 * i][1],
1818 2 * block_s, mb_y >> 1);
1819
1820 // after put we make avg of the same block
1821 pix_op = s->h264chroma.avg_h264_chroma_pixels_tab;
1822
1823 // opposite parity is always in the same
1824 // frame if this is second field
1825 if (!s->first_field) {
1826 ref_picture = s->current_picture_ptr->f->data;
1827 }
1828 }
1829 }
1830 break;
1831 default:
1832 av_assert2(0);
1833 }
1834 }
1835
1836 /**
1837 * find the lowest MB row referenced in the MVs
1838 */
lowest_referenced_row(MpegEncContext * s,int dir)1839 static int lowest_referenced_row(MpegEncContext *s, int dir)
1840 {
1841 int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
1842 int my, off, i, mvs;
1843
1844 if (s->picture_structure != PICT_FRAME || s->mcsel)
1845 goto unhandled;
1846
1847 switch (s->mv_type) {
1848 case MV_TYPE_16X16:
1849 mvs = 1;
1850 break;
1851 case MV_TYPE_16X8:
1852 mvs = 2;
1853 break;
1854 case MV_TYPE_8X8:
1855 mvs = 4;
1856 break;
1857 default:
1858 goto unhandled;
1859 }
1860
1861 for (i = 0; i < mvs; i++) {
1862 my = s->mv[dir][i][1];
1863 my_max = FFMAX(my_max, my);
1864 my_min = FFMIN(my_min, my);
1865 }
1866
1867 off = ((FFMAX(-my_min, my_max)<<qpel_shift) + 63) >> 6;
1868
1869 return av_clip(s->mb_y + off, 0, s->mb_height - 1);
1870 unhandled:
1871 return s->mb_height-1;
1872 }
1873
1874 /* put block[] to dest[] */
put_dct(MpegEncContext * s,int16_t * block,int i,uint8_t * dest,int line_size,int qscale)1875 static inline void put_dct(MpegEncContext *s,
1876 int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
1877 {
1878 s->dct_unquantize_intra(s, block, i, qscale);
1879 s->idsp.idct_put(dest, line_size, block);
1880 }
1881
1882 /* add block[] to dest[] */
add_dct(MpegEncContext * s,int16_t * block,int i,uint8_t * dest,int line_size)1883 static inline void add_dct(MpegEncContext *s,
1884 int16_t *block, int i, uint8_t *dest, int line_size)
1885 {
1886 if (s->block_last_index[i] >= 0) {
1887 s->idsp.idct_add(dest, line_size, block);
1888 }
1889 }
1890
add_dequant_dct(MpegEncContext * s,int16_t * block,int i,uint8_t * dest,int line_size,int qscale)1891 static inline void add_dequant_dct(MpegEncContext *s,
1892 int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
1893 {
1894 if (s->block_last_index[i] >= 0) {
1895 s->dct_unquantize_inter(s, block, i, qscale);
1896
1897 s->idsp.idct_add(dest, line_size, block);
1898 }
1899 }
1900
1901 /**
1902 * Clean dc, ac, coded_block for the current non-intra MB.
1903 */
ff_clean_intra_table_entries(MpegEncContext * s)1904 void ff_clean_intra_table_entries(MpegEncContext *s)
1905 {
1906 int wrap = s->b8_stride;
1907 int xy = s->block_index[0];
1908
1909 s->dc_val[0][xy ] =
1910 s->dc_val[0][xy + 1 ] =
1911 s->dc_val[0][xy + wrap] =
1912 s->dc_val[0][xy + 1 + wrap] = 1024;
1913 /* ac pred */
1914 memset(s->ac_val[0][xy ], 0, 32 * sizeof(int16_t));
1915 memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
1916 if (s->msmpeg4_version>=3) {
1917 s->coded_block[xy ] =
1918 s->coded_block[xy + 1 ] =
1919 s->coded_block[xy + wrap] =
1920 s->coded_block[xy + 1 + wrap] = 0;
1921 }
1922 /* chroma */
1923 wrap = s->mb_stride;
1924 xy = s->mb_x + s->mb_y * wrap;
1925 s->dc_val[1][xy] =
1926 s->dc_val[2][xy] = 1024;
1927 /* ac pred */
1928 memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
1929 memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
1930
1931 s->mbintra_table[xy]= 0;
1932 }
1933
1934 /* generic function called after a macroblock has been parsed by the
1935 decoder or after it has been encoded by the encoder.
1936
1937 Important variables used:
1938 s->mb_intra : true if intra macroblock
1939 s->mv_dir : motion vector direction
1940 s->mv_type : motion vector type
1941 s->mv : motion vector
1942 s->interlaced_dct : true if interlaced dct used (mpeg2)
1943 */
1944 static av_always_inline
mpv_reconstruct_mb_internal(MpegEncContext * s,int16_t block[12][64],int lowres_flag,int is_mpeg12)1945 void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
1946 int lowres_flag, int is_mpeg12)
1947 {
1948 const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
1949
1950 if (CONFIG_XVMC &&
1951 s->avctx->hwaccel && s->avctx->hwaccel->decode_mb) {
1952 s->avctx->hwaccel->decode_mb(s);//xvmc uses pblocks
1953 return;
1954 }
1955
1956 if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
1957 /* print DCT coefficients */
1958 int i,j;
1959 av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
1960 for(i=0; i<6; i++){
1961 for(j=0; j<64; j++){
1962 av_log(s->avctx, AV_LOG_DEBUG, "%5d",
1963 block[i][s->idsp.idct_permutation[j]]);
1964 }
1965 av_log(s->avctx, AV_LOG_DEBUG, "\n");
1966 }
1967 }
1968
1969 s->current_picture.qscale_table[mb_xy] = s->qscale;
1970
1971 /* update DC predictors for P macroblocks */
1972 if (!s->mb_intra) {
1973 if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) {
1974 if(s->mbintra_table[mb_xy])
1975 ff_clean_intra_table_entries(s);
1976 } else {
1977 s->last_dc[0] =
1978 s->last_dc[1] =
1979 s->last_dc[2] = 128 << s->intra_dc_precision;
1980 }
1981 }
1982 else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
1983 s->mbintra_table[mb_xy]=1;
1984
1985 if ((s->avctx->flags & AV_CODEC_FLAG_PSNR) || s->frame_skip_threshold || s->frame_skip_factor ||
1986 !(s->encoding && (s->intra_only || s->pict_type == AV_PICTURE_TYPE_B) &&
1987 s->avctx->mb_decision != FF_MB_DECISION_RD)) { // FIXME precalc
1988 uint8_t *dest_y, *dest_cb, *dest_cr;
1989 int dct_linesize, dct_offset;
1990 op_pixels_func (*op_pix)[4];
1991 qpel_mc_func (*op_qpix)[16];
1992 const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
1993 const int uvlinesize = s->current_picture.f->linesize[1];
1994 const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
1995 const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
1996
1997 /* avoid copy if macroblock skipped in last frame too */
1998 /* skip only during decoding as we might trash the buffers during encoding a bit */
1999 if(!s->encoding){
2000 uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
2001
2002 if (s->mb_skipped) {
2003 s->mb_skipped= 0;
2004 av_assert2(s->pict_type!=AV_PICTURE_TYPE_I);
2005 *mbskip_ptr = 1;
2006 } else if(!s->current_picture.reference) {
2007 *mbskip_ptr = 1;
2008 } else{
2009 *mbskip_ptr = 0; /* not skipped */
2010 }
2011 }
2012
2013 dct_linesize = linesize << s->interlaced_dct;
2014 dct_offset = s->interlaced_dct ? linesize : linesize * block_size;
2015
2016 if(readable){
2017 dest_y= s->dest[0];
2018 dest_cb= s->dest[1];
2019 dest_cr= s->dest[2];
2020 }else{
2021 dest_y = s->sc.b_scratchpad;
2022 dest_cb= s->sc.b_scratchpad+16*linesize;
2023 dest_cr= s->sc.b_scratchpad+32*linesize;
2024 }
2025
2026 if (!s->mb_intra) {
2027 /* motion handling */
2028 /* decoding or more than one mb_type (MC was already done otherwise) */
2029 if(!s->encoding){
2030
2031 if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
2032 if (s->mv_dir & MV_DIR_FORWARD) {
2033 ff_thread_await_progress(&s->last_picture_ptr->tf,
2034 lowest_referenced_row(s, 0),
2035 0);
2036 }
2037 if (s->mv_dir & MV_DIR_BACKWARD) {
2038 ff_thread_await_progress(&s->next_picture_ptr->tf,
2039 lowest_referenced_row(s, 1),
2040 0);
2041 }
2042 }
2043
2044 if(lowres_flag){
2045 h264_chroma_mc_func *op_pix = s->h264chroma.put_h264_chroma_pixels_tab;
2046
2047 if (s->mv_dir & MV_DIR_FORWARD) {
2048 MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix);
2049 op_pix = s->h264chroma.avg_h264_chroma_pixels_tab;
2050 }
2051 if (s->mv_dir & MV_DIR_BACKWARD) {
2052 MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix);
2053 }
2054 }else{
2055 op_qpix = s->me.qpel_put;
2056 if ((!s->no_rounding) || s->pict_type==AV_PICTURE_TYPE_B){
2057 op_pix = s->hdsp.put_pixels_tab;
2058 }else{
2059 op_pix = s->hdsp.put_no_rnd_pixels_tab;
2060 }
2061 if (s->mv_dir & MV_DIR_FORWARD) {
2062 ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix, op_qpix);
2063 op_pix = s->hdsp.avg_pixels_tab;
2064 op_qpix= s->me.qpel_avg;
2065 }
2066 if (s->mv_dir & MV_DIR_BACKWARD) {
2067 ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix, op_qpix);
2068 }
2069 }
2070 }
2071
2072 /* skip dequant / idct if we are really late ;) */
2073 if(s->avctx->skip_idct){
2074 if( (s->avctx->skip_idct >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B)
2075 ||(s->avctx->skip_idct >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I)
2076 || s->avctx->skip_idct >= AVDISCARD_ALL)
2077 goto skip_idct;
2078 }
2079
2080 /* add dct residue */
2081 if(s->encoding || !( s->msmpeg4_version || s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO
2082 || (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){
2083 add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2084 add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2085 add_dequant_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2086 add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2087
2088 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2089 if (s->chroma_y_shift){
2090 add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2091 add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2092 }else{
2093 dct_linesize >>= 1;
2094 dct_offset >>=1;
2095 add_dequant_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2096 add_dequant_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2097 add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2098 add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2099 }
2100 }
2101 } else if(is_mpeg12 || (s->codec_id != AV_CODEC_ID_WMV2)){
2102 add_dct(s, block[0], 0, dest_y , dct_linesize);
2103 add_dct(s, block[1], 1, dest_y + block_size, dct_linesize);
2104 add_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize);
2105 add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
2106
2107 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2108 if(s->chroma_y_shift){//Chroma420
2109 add_dct(s, block[4], 4, dest_cb, uvlinesize);
2110 add_dct(s, block[5], 5, dest_cr, uvlinesize);
2111 }else{
2112 //chroma422
2113 dct_linesize = uvlinesize << s->interlaced_dct;
2114 dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2115
2116 add_dct(s, block[4], 4, dest_cb, dct_linesize);
2117 add_dct(s, block[5], 5, dest_cr, dct_linesize);
2118 add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
2119 add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
2120 if(!s->chroma_x_shift){//Chroma444
2121 add_dct(s, block[8], 8, dest_cb+block_size, dct_linesize);
2122 add_dct(s, block[9], 9, dest_cr+block_size, dct_linesize);
2123 add_dct(s, block[10], 10, dest_cb+block_size+dct_offset, dct_linesize);
2124 add_dct(s, block[11], 11, dest_cr+block_size+dct_offset, dct_linesize);
2125 }
2126 }
2127 }//fi gray
2128 }
2129 else if (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) {
2130 ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
2131 }
2132 } else {
2133 /* Only MPEG-4 Simple Studio Profile is supported in > 8-bit mode.
2134 TODO: Integrate 10-bit properly into mpegvideo.c so that ER works properly */
2135 if (s->avctx->bits_per_raw_sample > 8){
2136 const int act_block_size = block_size * 2;
2137
2138 if(s->dpcm_direction == 0) {
2139 s->idsp.idct_put(dest_y, dct_linesize, (int16_t*)(*s->block32)[0]);
2140 s->idsp.idct_put(dest_y + act_block_size, dct_linesize, (int16_t*)(*s->block32)[1]);
2141 s->idsp.idct_put(dest_y + dct_offset, dct_linesize, (int16_t*)(*s->block32)[2]);
2142 s->idsp.idct_put(dest_y + dct_offset + act_block_size, dct_linesize, (int16_t*)(*s->block32)[3]);
2143
2144 dct_linesize = uvlinesize << s->interlaced_dct;
2145 dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2146
2147 s->idsp.idct_put(dest_cb, dct_linesize, (int16_t*)(*s->block32)[4]);
2148 s->idsp.idct_put(dest_cr, dct_linesize, (int16_t*)(*s->block32)[5]);
2149 s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, (int16_t*)(*s->block32)[6]);
2150 s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, (int16_t*)(*s->block32)[7]);
2151 if(!s->chroma_x_shift){//Chroma444
2152 s->idsp.idct_put(dest_cb + act_block_size, dct_linesize, (int16_t*)(*s->block32)[8]);
2153 s->idsp.idct_put(dest_cr + act_block_size, dct_linesize, (int16_t*)(*s->block32)[9]);
2154 s->idsp.idct_put(dest_cb + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[10]);
2155 s->idsp.idct_put(dest_cr + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[11]);
2156 }
2157 } else if(s->dpcm_direction == 1) {
2158 int i, w, h;
2159 uint16_t *dest_pcm[3] = {(uint16_t*)dest_y, (uint16_t*)dest_cb, (uint16_t*)dest_cr};
2160 int linesize[3] = {dct_linesize, uvlinesize, uvlinesize};
2161 for(i = 0; i < 3; i++) {
2162 int idx = 0;
2163 int vsub = i ? s->chroma_y_shift : 0;
2164 int hsub = i ? s->chroma_x_shift : 0;
2165 for(h = 0; h < (16 >> vsub); h++){
2166 for(w = 0; w < (16 >> hsub); w++)
2167 dest_pcm[i][w] = (*s->dpcm_macroblock)[i][idx++];
2168 dest_pcm[i] += linesize[i] / 2;
2169 }
2170 }
2171 } else if(s->dpcm_direction == -1) {
2172 int i, w, h;
2173 uint16_t *dest_pcm[3] = {(uint16_t*)dest_y, (uint16_t*)dest_cb, (uint16_t*)dest_cr};
2174 int linesize[3] = {dct_linesize, uvlinesize, uvlinesize};
2175 for(i = 0; i < 3; i++) {
2176 int idx = 0;
2177 int vsub = i ? s->chroma_y_shift : 0;
2178 int hsub = i ? s->chroma_x_shift : 0;
2179 dest_pcm[i] += (linesize[i] / 2) * ((16 >> vsub) - 1);
2180 for(h = (16 >> vsub)-1; h >= 1; h--){
2181 for(w = (16 >> hsub)-1; w >= 1; w--)
2182 dest_pcm[i][w] = (*s->dpcm_macroblock)[i][idx++];
2183 dest_pcm[i] -= linesize[i] / 2;
2184 }
2185 }
2186 }
2187 }
2188 /* dct only in intra block */
2189 else if(s->encoding || !(s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO)){
2190 put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2191 put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2192 put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2193 put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2194
2195 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2196 if(s->chroma_y_shift){
2197 put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2198 put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2199 }else{
2200 dct_offset >>=1;
2201 dct_linesize >>=1;
2202 put_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2203 put_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2204 put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2205 put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2206 }
2207 }
2208 }else{
2209 s->idsp.idct_put(dest_y, dct_linesize, block[0]);
2210 s->idsp.idct_put(dest_y + block_size, dct_linesize, block[1]);
2211 s->idsp.idct_put(dest_y + dct_offset, dct_linesize, block[2]);
2212 s->idsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
2213
2214 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2215 if(s->chroma_y_shift){
2216 s->idsp.idct_put(dest_cb, uvlinesize, block[4]);
2217 s->idsp.idct_put(dest_cr, uvlinesize, block[5]);
2218 }else{
2219
2220 dct_linesize = uvlinesize << s->interlaced_dct;
2221 dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2222
2223 s->idsp.idct_put(dest_cb, dct_linesize, block[4]);
2224 s->idsp.idct_put(dest_cr, dct_linesize, block[5]);
2225 s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
2226 s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
2227 if(!s->chroma_x_shift){//Chroma444
2228 s->idsp.idct_put(dest_cb + block_size, dct_linesize, block[8]);
2229 s->idsp.idct_put(dest_cr + block_size, dct_linesize, block[9]);
2230 s->idsp.idct_put(dest_cb + block_size + dct_offset, dct_linesize, block[10]);
2231 s->idsp.idct_put(dest_cr + block_size + dct_offset, dct_linesize, block[11]);
2232 }
2233 }
2234 }//gray
2235 }
2236 }
2237 skip_idct:
2238 if(!readable){
2239 s->hdsp.put_pixels_tab[0][0](s->dest[0], dest_y , linesize,16);
2240 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2241 s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
2242 s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
2243 }
2244 }
2245 }
2246 }
2247
ff_mpv_reconstruct_mb(MpegEncContext * s,int16_t block[12][64])2248 void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
2249 {
2250 #if !CONFIG_SMALL
2251 if(s->out_format == FMT_MPEG1) {
2252 if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 1);
2253 else mpv_reconstruct_mb_internal(s, block, 0, 1);
2254 } else
2255 #endif
2256 if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 0);
2257 else mpv_reconstruct_mb_internal(s, block, 0, 0);
2258 }
2259
ff_mpeg_draw_horiz_band(MpegEncContext * s,int y,int h)2260 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
2261 {
2262 ff_draw_horiz_band(s->avctx, s->current_picture_ptr->f,
2263 s->last_picture_ptr ? s->last_picture_ptr->f : NULL, y, h, s->picture_structure,
2264 s->first_field, s->low_delay);
2265 }
2266
ff_init_block_index(MpegEncContext * s)2267 void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
2268 const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
2269 const int uvlinesize = s->current_picture.f->linesize[1];
2270 const int width_of_mb = (4 + (s->avctx->bits_per_raw_sample > 8)) - s->avctx->lowres;
2271 const int height_of_mb = 4 - s->avctx->lowres;
2272
2273 s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2;
2274 s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2;
2275 s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
2276 s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
2277 s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
2278 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;
2279 //block_index is not used by mpeg2, so it is not affected by chroma_format
2280
2281 s->dest[0] = s->current_picture.f->data[0] + (int)((s->mb_x - 1U) << width_of_mb);
2282 s->dest[1] = s->current_picture.f->data[1] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift));
2283 s->dest[2] = s->current_picture.f->data[2] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift));
2284
2285 if(!(s->pict_type==AV_PICTURE_TYPE_B && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME))
2286 {
2287 if(s->picture_structure==PICT_FRAME){
2288 s->dest[0] += s->mb_y * linesize << height_of_mb;
2289 s->dest[1] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift);
2290 s->dest[2] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift);
2291 }else{
2292 s->dest[0] += (s->mb_y>>1) * linesize << height_of_mb;
2293 s->dest[1] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift);
2294 s->dest[2] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift);
2295 av_assert1((s->mb_y&1) == (s->picture_structure == PICT_BOTTOM_FIELD));
2296 }
2297 }
2298 }
2299
ff_mpeg_flush(AVCodecContext * avctx)2300 void ff_mpeg_flush(AVCodecContext *avctx){
2301 int i;
2302 MpegEncContext *s = avctx->priv_data;
2303
2304 if (!s || !s->picture)
2305 return;
2306
2307 for (i = 0; i < MAX_PICTURE_COUNT; i++)
2308 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
2309 s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
2310
2311 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
2312 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
2313 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
2314
2315 s->mb_x= s->mb_y= 0;
2316 s->closed_gop= 0;
2317
2318 s->parse_context.state= -1;
2319 s->parse_context.frame_start_found= 0;
2320 s->parse_context.overread= 0;
2321 s->parse_context.overread_index= 0;
2322 s->parse_context.index= 0;
2323 s->parse_context.last_index= 0;
2324 s->bitstream_buffer_size=0;
2325 s->pp_time=0;
2326 }
2327
2328 /**
2329 * set qscale and update qscale dependent variables.
2330 */
ff_set_qscale(MpegEncContext * s,int qscale)2331 void ff_set_qscale(MpegEncContext * s, int qscale)
2332 {
2333 if (qscale < 1)
2334 qscale = 1;
2335 else if (qscale > 31)
2336 qscale = 31;
2337
2338 s->qscale = qscale;
2339 s->chroma_qscale= s->chroma_qscale_table[qscale];
2340
2341 s->y_dc_scale= s->y_dc_scale_table[ qscale ];
2342 s->c_dc_scale= s->c_dc_scale_table[ s->chroma_qscale ];
2343 }
2344
ff_mpv_report_decode_progress(MpegEncContext * s)2345 void ff_mpv_report_decode_progress(MpegEncContext *s)
2346 {
2347 if (s->pict_type != AV_PICTURE_TYPE_B && !s->partitioned_frame && !s->er.error_occurred)
2348 ff_thread_report_progress(&s->current_picture_ptr->tf, s->mb_y, 0);
2349 }
2350