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mpegvideo: directly use frames in ff_draw_horiz_band()
[libav.git] / libavcodec / mpegvideo.c
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 Libav.
9 *
10 * Libav 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 * Libav 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 Libav; 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/timer.h"
35 #include "avcodec.h"
36 #include "dsputil.h"
37 #include "internal.h"
38 #include "mathops.h"
39 #include "mpegvideo.h"
40 #include "mjpegenc.h"
41 #include "msmpeg4.h"
42 #include "xvmc_internal.h"
43 #include "thread.h"
44 #include <limits.h>
45
46 static const uint8_t ff_default_chroma_qscale_table[32] = {
47 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
48 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
49 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
50 };
51
52 const uint8_t ff_mpeg1_dc_scale_table[128] = {
53 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
54 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
55 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
56 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
57 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
58 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
59 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
60 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
61 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
62 };
63
64 static const uint8_t mpeg2_dc_scale_table1[128] = {
65 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
66 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
67 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
68 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
69 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
70 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
71 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
72 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
73 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
74 };
75
76 static const uint8_t mpeg2_dc_scale_table2[128] = {
77 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
78 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
79 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
80 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
81 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
82 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
83 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
84 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
85 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
86 };
87
88 static const uint8_t mpeg2_dc_scale_table3[128] = {
89 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
90 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
91 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
92 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
93 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
94 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
95 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
96 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
97 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
98 };
99
100 const uint8_t *const ff_mpeg2_dc_scale_table[4] = {
101 ff_mpeg1_dc_scale_table,
102 mpeg2_dc_scale_table1,
103 mpeg2_dc_scale_table2,
104 mpeg2_dc_scale_table3,
105 };
106
107 const enum AVPixelFormat ff_pixfmt_list_420[] = {
108 AV_PIX_FMT_YUV420P,
109 AV_PIX_FMT_NONE
110 };
111
112 static void dct_unquantize_mpeg1_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 nCoeffs= s->block_last_index[n];
119
120 if (n < 4)
121 block[0] = block[0] * s->y_dc_scale;
122 else
123 block[0] = block[0] * s->c_dc_scale;
124 /* XXX: only mpeg1 */
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]) >> 3;
133 level = (level - 1) | 1;
134 level = -level;
135 } else {
136 level = (int)(level * qscale * quant_matrix[j]) >> 3;
137 level = (level - 1) | 1;
138 }
139 block[j] = level;
140 }
141 }
142 }
143
144 static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
145 int16_t *block, int n, int qscale)
146 {
147 int i, level, nCoeffs;
148 const uint16_t *quant_matrix;
149
150 nCoeffs= s->block_last_index[n];
151
152 quant_matrix = s->inter_matrix;
153 for(i=0; i<=nCoeffs; i++) {
154 int j= s->intra_scantable.permutated[i];
155 level = block[j];
156 if (level) {
157 if (level < 0) {
158 level = -level;
159 level = (((level << 1) + 1) * qscale *
160 ((int) (quant_matrix[j]))) >> 4;
161 level = (level - 1) | 1;
162 level = -level;
163 } else {
164 level = (((level << 1) + 1) * qscale *
165 ((int) (quant_matrix[j]))) >> 4;
166 level = (level - 1) | 1;
167 }
168 block[j] = level;
169 }
170 }
171 }
172
173 static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
174 int16_t *block, int n, int qscale)
175 {
176 int i, level, nCoeffs;
177 const uint16_t *quant_matrix;
178
179 if(s->alternate_scan) nCoeffs= 63;
180 else nCoeffs= s->block_last_index[n];
181
182 if (n < 4)
183 block[0] = block[0] * s->y_dc_scale;
184 else
185 block[0] = block[0] * s->c_dc_scale;
186 quant_matrix = s->intra_matrix;
187 for(i=1;i<=nCoeffs;i++) {
188 int j= s->intra_scantable.permutated[i];
189 level = block[j];
190 if (level) {
191 if (level < 0) {
192 level = -level;
193 level = (int)(level * qscale * quant_matrix[j]) >> 3;
194 level = -level;
195 } else {
196 level = (int)(level * qscale * quant_matrix[j]) >> 3;
197 }
198 block[j] = level;
199 }
200 }
201 }
202
203 static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
204 int16_t *block, int n, int qscale)
205 {
206 int i, level, nCoeffs;
207 const uint16_t *quant_matrix;
208 int sum=-1;
209
210 if(s->alternate_scan) nCoeffs= 63;
211 else nCoeffs= s->block_last_index[n];
212
213 if (n < 4)
214 block[0] = block[0] * s->y_dc_scale;
215 else
216 block[0] = block[0] * s->c_dc_scale;
217 quant_matrix = s->intra_matrix;
218 for(i=1;i<=nCoeffs;i++) {
219 int j= s->intra_scantable.permutated[i];
220 level = block[j];
221 if (level) {
222 if (level < 0) {
223 level = -level;
224 level = (int)(level * qscale * quant_matrix[j]) >> 3;
225 level = -level;
226 } else {
227 level = (int)(level * qscale * quant_matrix[j]) >> 3;
228 }
229 block[j] = level;
230 sum+=level;
231 }
232 }
233 block[63]^=sum&1;
234 }
235
236 static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
237 int16_t *block, int n, int qscale)
238 {
239 int i, level, nCoeffs;
240 const uint16_t *quant_matrix;
241 int sum=-1;
242
243 if(s->alternate_scan) nCoeffs= 63;
244 else nCoeffs= s->block_last_index[n];
245
246 quant_matrix = s->inter_matrix;
247 for(i=0; i<=nCoeffs; i++) {
248 int j= s->intra_scantable.permutated[i];
249 level = block[j];
250 if (level) {
251 if (level < 0) {
252 level = -level;
253 level = (((level << 1) + 1) * qscale *
254 ((int) (quant_matrix[j]))) >> 4;
255 level = -level;
256 } else {
257 level = (((level << 1) + 1) * qscale *
258 ((int) (quant_matrix[j]))) >> 4;
259 }
260 block[j] = level;
261 sum+=level;
262 }
263 }
264 block[63]^=sum&1;
265 }
266
267 static void dct_unquantize_h263_intra_c(MpegEncContext *s,
268 int16_t *block, int n, int qscale)
269 {
270 int i, level, qmul, qadd;
271 int nCoeffs;
272
273 assert(s->block_last_index[n]>=0);
274
275 qmul = qscale << 1;
276
277 if (!s->h263_aic) {
278 if (n < 4)
279 block[0] = block[0] * s->y_dc_scale;
280 else
281 block[0] = block[0] * s->c_dc_scale;
282 qadd = (qscale - 1) | 1;
283 }else{
284 qadd = 0;
285 }
286 if(s->ac_pred)
287 nCoeffs=63;
288 else
289 nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
290
291 for(i=1; i<=nCoeffs; i++) {
292 level = block[i];
293 if (level) {
294 if (level < 0) {
295 level = level * qmul - qadd;
296 } else {
297 level = level * qmul + qadd;
298 }
299 block[i] = level;
300 }
301 }
302 }
303
304 static void dct_unquantize_h263_inter_c(MpegEncContext *s,
305 int16_t *block, int n, int qscale)
306 {
307 int i, level, qmul, qadd;
308 int nCoeffs;
309
310 assert(s->block_last_index[n]>=0);
311
312 qadd = (qscale - 1) | 1;
313 qmul = qscale << 1;
314
315 nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
316
317 for(i=0; i<=nCoeffs; i++) {
318 level = block[i];
319 if (level) {
320 if (level < 0) {
321 level = level * qmul - qadd;
322 } else {
323 level = level * qmul + qadd;
324 }
325 block[i] = level;
326 }
327 }
328 }
329
330 static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
331 int (*mv)[2][4][2],
332 int mb_x, int mb_y, int mb_intra, int mb_skipped)
333 {
334 MpegEncContext *s = opaque;
335
336 s->mv_dir = mv_dir;
337 s->mv_type = mv_type;
338 s->mb_intra = mb_intra;
339 s->mb_skipped = mb_skipped;
340 s->mb_x = mb_x;
341 s->mb_y = mb_y;
342 memcpy(s->mv, mv, sizeof(*mv));
343
344 ff_init_block_index(s);
345 ff_update_block_index(s);
346
347 s->dsp.clear_blocks(s->block[0]);
348
349 s->dest[0] = s->current_picture.f.data[0] + (s->mb_y * 16 * s->linesize) + s->mb_x * 16;
350 s->dest[1] = s->current_picture.f.data[1] + (s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize) + s->mb_x * (16 >> s->chroma_x_shift);
351 s->dest[2] = s->current_picture.f.data[2] + (s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize) + s->mb_x * (16 >> s->chroma_x_shift);
352
353 assert(ref == 0);
354 ff_MPV_decode_mb(s, s->block);
355 }
356
357 /* init common dct for both encoder and decoder */
358 av_cold int ff_dct_common_init(MpegEncContext *s)
359 {
360 ff_dsputil_init(&s->dsp, s->avctx);
361 ff_hpeldsp_init(&s->hdsp, s->avctx->flags);
362 ff_videodsp_init(&s->vdsp, s->avctx->bits_per_raw_sample);
363
364 s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_c;
365 s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_c;
366 s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_c;
367 s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_c;
368 s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_c;
369 if (s->flags & CODEC_FLAG_BITEXACT)
370 s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_bitexact;
371 s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_c;
372
373 if (ARCH_ARM)
374 ff_MPV_common_init_arm(s);
375 if (ARCH_PPC)
376 ff_MPV_common_init_ppc(s);
377 if (ARCH_X86)
378 ff_MPV_common_init_x86(s);
379
380 /* load & permutate scantables
381 * note: only wmv uses different ones
382 */
383 if (s->alternate_scan) {
384 ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable , ff_alternate_vertical_scan);
385 ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable , ff_alternate_vertical_scan);
386 } else {
387 ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable , ff_zigzag_direct);
388 ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable , ff_zigzag_direct);
389 }
390 ff_init_scantable(s->dsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan);
391 ff_init_scantable(s->dsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
392
393 return 0;
394 }
395
396 static int frame_size_alloc(MpegEncContext *s, int linesize)
397 {
398 int alloc_size = FFALIGN(FFABS(linesize) + 32, 32);
399
400 // edge emu needs blocksize + filter length - 1
401 // (= 17x17 for halfpel / 21x21 for h264)
402 // VC1 computes luma and chroma simultaneously and needs 19X19 + 9x9
403 // at uvlinesize. It supports only YUV420 so 24x24 is enough
404 // linesize * interlaced * MBsize
405 FF_ALLOCZ_OR_GOTO(s->avctx, s->edge_emu_buffer, alloc_size * 2 * 24,
406 fail);
407
408 FF_ALLOCZ_OR_GOTO(s->avctx, s->me.scratchpad, alloc_size * 2 * 16 * 3,
409 fail)
410 s->me.temp = s->me.scratchpad;
411 s->rd_scratchpad = s->me.scratchpad;
412 s->b_scratchpad = s->me.scratchpad;
413 s->obmc_scratchpad = s->me.scratchpad + 16;
414
415 return 0;
416 fail:
417 av_freep(&s->edge_emu_buffer);
418 return AVERROR(ENOMEM);
419 }
420
421 /**
422 * Allocate a frame buffer
423 */
424 static int alloc_frame_buffer(MpegEncContext *s, Picture *pic)
425 {
426 int edges_needed = av_codec_is_encoder(s->avctx->codec);
427 int r, ret;
428
429 pic->tf.f = &pic->f;
430 if (s->codec_id != AV_CODEC_ID_WMV3IMAGE &&
431 s->codec_id != AV_CODEC_ID_VC1IMAGE &&
432 s->codec_id != AV_CODEC_ID_MSS2) {
433 if (edges_needed) {
434 pic->f.width = s->avctx->width + 2 * EDGE_WIDTH;
435 pic->f.height = s->avctx->height + 2 * EDGE_WIDTH;
436 }
437
438 r = ff_thread_get_buffer(s->avctx, &pic->tf,
439 pic->reference ? AV_GET_BUFFER_FLAG_REF : 0);
440 } else {
441 pic->f.width = s->avctx->width;
442 pic->f.height = s->avctx->height;
443 pic->f.format = s->avctx->pix_fmt;
444 r = avcodec_default_get_buffer2(s->avctx, &pic->f, 0);
445 }
446
447 if (r < 0 || !pic->f.buf[0]) {
448 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %p)\n",
449 r, pic->f.data[0]);
450 return -1;
451 }
452
453 if (edges_needed) {
454 int i;
455 for (i = 0; pic->f.data[i]; i++) {
456 int offset = (EDGE_WIDTH >> (i ? s->chroma_y_shift : 0)) *
457 pic->f.linesize[i] +
458 (EDGE_WIDTH >> (i ? s->chroma_x_shift : 0));
459 pic->f.data[i] += offset;
460 }
461 pic->f.width = s->avctx->width;
462 pic->f.height = s->avctx->height;
463 }
464
465 if (s->avctx->hwaccel) {
466 assert(!pic->hwaccel_picture_private);
467 if (s->avctx->hwaccel->priv_data_size) {
468 pic->hwaccel_priv_buf = av_buffer_allocz(s->avctx->hwaccel->priv_data_size);
469 if (!pic->hwaccel_priv_buf) {
470 av_log(s->avctx, AV_LOG_ERROR, "alloc_frame_buffer() failed (hwaccel private data allocation)\n");
471 return -1;
472 }
473 pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
474 }
475 }
476
477 if (s->linesize && (s->linesize != pic->f.linesize[0] ||
478 s->uvlinesize != pic->f.linesize[1])) {
479 av_log(s->avctx, AV_LOG_ERROR,
480 "get_buffer() failed (stride changed)\n");
481 ff_mpeg_unref_picture(s, pic);
482 return -1;
483 }
484
485 if (pic->f.linesize[1] != pic->f.linesize[2]) {
486 av_log(s->avctx, AV_LOG_ERROR,
487 "get_buffer() failed (uv stride mismatch)\n");
488 ff_mpeg_unref_picture(s, pic);
489 return -1;
490 }
491
492 if (!s->edge_emu_buffer &&
493 (ret = frame_size_alloc(s, pic->f.linesize[0])) < 0) {
494 av_log(s->avctx, AV_LOG_ERROR,
495 "get_buffer() failed to allocate context scratch buffers.\n");
496 ff_mpeg_unref_picture(s, pic);
497 return ret;
498 }
499
500 return 0;
501 }
502
503 void ff_free_picture_tables(Picture *pic)
504 {
505 int i;
506
507 av_buffer_unref(&pic->mb_var_buf);
508 av_buffer_unref(&pic->mc_mb_var_buf);
509 av_buffer_unref(&pic->mb_mean_buf);
510 av_buffer_unref(&pic->mbskip_table_buf);
511 av_buffer_unref(&pic->qscale_table_buf);
512 av_buffer_unref(&pic->mb_type_buf);
513
514 for (i = 0; i < 2; i++) {
515 av_buffer_unref(&pic->motion_val_buf[i]);
516 av_buffer_unref(&pic->ref_index_buf[i]);
517 }
518 }
519
520 static int alloc_picture_tables(MpegEncContext *s, Picture *pic)
521 {
522 const int big_mb_num = s->mb_stride * (s->mb_height + 1) + 1;
523 const int mb_array_size = s->mb_stride * s->mb_height;
524 const int b8_array_size = s->b8_stride * s->mb_height * 2;
525 int i;
526
527
528 pic->mbskip_table_buf = av_buffer_allocz(mb_array_size + 2);
529 pic->qscale_table_buf = av_buffer_allocz(big_mb_num + s->mb_stride);
530 pic->mb_type_buf = av_buffer_allocz((big_mb_num + s->mb_stride) *
531 sizeof(uint32_t));
532 if (!pic->mbskip_table_buf || !pic->qscale_table_buf || !pic->mb_type_buf)
533 return AVERROR(ENOMEM);
534
535 if (s->encoding) {
536 pic->mb_var_buf = av_buffer_allocz(mb_array_size * sizeof(int16_t));
537 pic->mc_mb_var_buf = av_buffer_allocz(mb_array_size * sizeof(int16_t));
538 pic->mb_mean_buf = av_buffer_allocz(mb_array_size);
539 if (!pic->mb_var_buf || !pic->mc_mb_var_buf || !pic->mb_mean_buf)
540 return AVERROR(ENOMEM);
541 }
542
543 if (s->out_format == FMT_H263 || s->encoding) {
544 int mv_size = 2 * (b8_array_size + 4) * sizeof(int16_t);
545 int ref_index_size = 4 * mb_array_size;
546
547 for (i = 0; mv_size && i < 2; i++) {
548 pic->motion_val_buf[i] = av_buffer_allocz(mv_size);
549 pic->ref_index_buf[i] = av_buffer_allocz(ref_index_size);
550 if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
551 return AVERROR(ENOMEM);
552 }
553 }
554
555 return 0;
556 }
557
558 static int make_tables_writable(Picture *pic)
559 {
560 int ret, i;
561 #define MAKE_WRITABLE(table) \
562 do {\
563 if (pic->table &&\
564 (ret = av_buffer_make_writable(&pic->table)) < 0)\
565 return ret;\
566 } while (0)
567
568 MAKE_WRITABLE(mb_var_buf);
569 MAKE_WRITABLE(mc_mb_var_buf);
570 MAKE_WRITABLE(mb_mean_buf);
571 MAKE_WRITABLE(mbskip_table_buf);
572 MAKE_WRITABLE(qscale_table_buf);
573 MAKE_WRITABLE(mb_type_buf);
574
575 for (i = 0; i < 2; i++) {
576 MAKE_WRITABLE(motion_val_buf[i]);
577 MAKE_WRITABLE(ref_index_buf[i]);
578 }
579
580 return 0;
581 }
582
583 /**
584 * Allocate a Picture.
585 * The pixels are allocated/set by calling get_buffer() if shared = 0
586 */
587 int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared)
588 {
589 int i, ret;
590
591 if (shared) {
592 assert(pic->f.data[0]);
593 pic->shared = 1;
594 } else {
595 assert(!pic->f.buf[0]);
596
597 if (alloc_frame_buffer(s, pic) < 0)
598 return -1;
599
600 s->linesize = pic->f.linesize[0];
601 s->uvlinesize = pic->f.linesize[1];
602 }
603
604 if (!pic->qscale_table_buf)
605 ret = alloc_picture_tables(s, pic);
606 else
607 ret = make_tables_writable(pic);
608 if (ret < 0)
609 goto fail;
610
611 if (s->encoding) {
612 pic->mb_var = (uint16_t*)pic->mb_var_buf->data;
613 pic->mc_mb_var = (uint16_t*)pic->mc_mb_var_buf->data;
614 pic->mb_mean = pic->mb_mean_buf->data;
615 }
616
617 pic->mbskip_table = pic->mbskip_table_buf->data;
618 pic->qscale_table = pic->qscale_table_buf->data + 2 * s->mb_stride + 1;
619 pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * s->mb_stride + 1;
620
621 if (pic->motion_val_buf[0]) {
622 for (i = 0; i < 2; i++) {
623 pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
624 pic->ref_index[i] = pic->ref_index_buf[i]->data;
625 }
626 }
627
628 return 0;
629 fail:
630 av_log(s->avctx, AV_LOG_ERROR, "Error allocating a picture.\n");
631 ff_mpeg_unref_picture(s, pic);
632 ff_free_picture_tables(pic);
633 return AVERROR(ENOMEM);
634 }
635
636 /**
637 * Deallocate a picture.
638 */
639 void ff_mpeg_unref_picture(MpegEncContext *s, Picture *pic)
640 {
641 int off = offsetof(Picture, mb_mean) + sizeof(pic->mb_mean);
642
643 pic->tf.f = &pic->f;
644 /* WM Image / Screen codecs allocate internal buffers with different
645 * dimensions / colorspaces; ignore user-defined callbacks for these. */
646 if (s->codec_id != AV_CODEC_ID_WMV3IMAGE &&
647 s->codec_id != AV_CODEC_ID_VC1IMAGE &&
648 s->codec_id != AV_CODEC_ID_MSS2)
649 ff_thread_release_buffer(s->avctx, &pic->tf);
650 else
651 av_frame_unref(&pic->f);
652
653 av_buffer_unref(&pic->hwaccel_priv_buf);
654
655 if (pic->needs_realloc)
656 ff_free_picture_tables(pic);
657
658 memset((uint8_t*)pic + off, 0, sizeof(*pic) - off);
659 }
660
661 static int update_picture_tables(Picture *dst, Picture *src)
662 {
663 int i;
664
665 #define UPDATE_TABLE(table)\
666 do {\
667 if (src->table &&\
668 (!dst->table || dst->table->buffer != src->table->buffer)) {\
669 av_buffer_unref(&dst->table);\
670 dst->table = av_buffer_ref(src->table);\
671 if (!dst->table) {\
672 ff_free_picture_tables(dst);\
673 return AVERROR(ENOMEM);\
674 }\
675 }\
676 } while (0)
677
678 UPDATE_TABLE(mb_var_buf);
679 UPDATE_TABLE(mc_mb_var_buf);
680 UPDATE_TABLE(mb_mean_buf);
681 UPDATE_TABLE(mbskip_table_buf);
682 UPDATE_TABLE(qscale_table_buf);
683 UPDATE_TABLE(mb_type_buf);
684 for (i = 0; i < 2; i++) {
685 UPDATE_TABLE(motion_val_buf[i]);
686 UPDATE_TABLE(ref_index_buf[i]);
687 }
688
689 dst->mb_var = src->mb_var;
690 dst->mc_mb_var = src->mc_mb_var;
691 dst->mb_mean = src->mb_mean;
692 dst->mbskip_table = src->mbskip_table;
693 dst->qscale_table = src->qscale_table;
694 dst->mb_type = src->mb_type;
695 for (i = 0; i < 2; i++) {
696 dst->motion_val[i] = src->motion_val[i];
697 dst->ref_index[i] = src->ref_index[i];
698 }
699
700 return 0;
701 }
702
703 int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src)
704 {
705 int ret;
706
707 av_assert0(!dst->f.buf[0]);
708 av_assert0(src->f.buf[0]);
709
710 src->tf.f = &src->f;
711 dst->tf.f = &dst->f;
712 ret = ff_thread_ref_frame(&dst->tf, &src->tf);
713 if (ret < 0)
714 goto fail;
715
716 ret = update_picture_tables(dst, src);
717 if (ret < 0)
718 goto fail;
719
720 if (src->hwaccel_picture_private) {
721 dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
722 if (!dst->hwaccel_priv_buf)
723 goto fail;
724 dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
725 }
726
727 dst->field_picture = src->field_picture;
728 dst->mb_var_sum = src->mb_var_sum;
729 dst->mc_mb_var_sum = src->mc_mb_var_sum;
730 dst->b_frame_score = src->b_frame_score;
731 dst->needs_realloc = src->needs_realloc;
732 dst->reference = src->reference;
733 dst->shared = src->shared;
734
735 return 0;
736 fail:
737 ff_mpeg_unref_picture(s, dst);
738 return ret;
739 }
740
741 static void exchange_uv(MpegEncContext *s)
742 {
743 int16_t (*tmp)[64];
744
745 tmp = s->pblocks[4];
746 s->pblocks[4] = s->pblocks[5];
747 s->pblocks[5] = tmp;
748 }
749
750 static int init_duplicate_context(MpegEncContext *s)
751 {
752 int y_size = s->b8_stride * (2 * s->mb_height + 1);
753 int c_size = s->mb_stride * (s->mb_height + 1);
754 int yc_size = y_size + 2 * c_size;
755 int i;
756
757 s->edge_emu_buffer =
758 s->me.scratchpad =
759 s->me.temp =
760 s->rd_scratchpad =
761 s->b_scratchpad =
762 s->obmc_scratchpad = NULL;
763
764 if (s->encoding) {
765 FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map,
766 ME_MAP_SIZE * sizeof(uint32_t), fail)
767 FF_ALLOCZ_OR_GOTO(s->avctx, s->me.score_map,
768 ME_MAP_SIZE * sizeof(uint32_t), fail)
769 if (s->avctx->noise_reduction) {
770 FF_ALLOCZ_OR_GOTO(s->avctx, s->dct_error_sum,
771 2 * 64 * sizeof(int), fail)
772 }
773 }
774 FF_ALLOCZ_OR_GOTO(s->avctx, s->blocks, 64 * 12 * 2 * sizeof(int16_t), fail)
775 s->block = s->blocks[0];
776
777 for (i = 0; i < 12; i++) {
778 s->pblocks[i] = &s->block[i];
779 }
780 if (s->avctx->codec_tag == AV_RL32("VCR2"))
781 exchange_uv(s);
782
783 if (s->out_format == FMT_H263) {
784 /* ac values */
785 FF_ALLOCZ_OR_GOTO(s->avctx, s->ac_val_base,
786 yc_size * sizeof(int16_t) * 16, fail);
787 s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
788 s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
789 s->ac_val[2] = s->ac_val[1] + c_size;
790 }
791
792 return 0;
793 fail:
794 return -1; // free() through ff_MPV_common_end()
795 }
796
797 static void free_duplicate_context(MpegEncContext *s)
798 {
799 if (s == NULL)
800 return;
801
802 av_freep(&s->edge_emu_buffer);
803 av_freep(&s->me.scratchpad);
804 s->me.temp =
805 s->rd_scratchpad =
806 s->b_scratchpad =
807 s->obmc_scratchpad = NULL;
808
809 av_freep(&s->dct_error_sum);
810 av_freep(&s->me.map);
811 av_freep(&s->me.score_map);
812 av_freep(&s->blocks);
813 av_freep(&s->ac_val_base);
814 s->block = NULL;
815 }
816
817 static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
818 {
819 #define COPY(a) bak->a = src->a
820 COPY(edge_emu_buffer);
821 COPY(me.scratchpad);
822 COPY(me.temp);
823 COPY(rd_scratchpad);
824 COPY(b_scratchpad);
825 COPY(obmc_scratchpad);
826 COPY(me.map);
827 COPY(me.score_map);
828 COPY(blocks);
829 COPY(block);
830 COPY(start_mb_y);
831 COPY(end_mb_y);
832 COPY(me.map_generation);
833 COPY(pb);
834 COPY(dct_error_sum);
835 COPY(dct_count[0]);
836 COPY(dct_count[1]);
837 COPY(ac_val_base);
838 COPY(ac_val[0]);
839 COPY(ac_val[1]);
840 COPY(ac_val[2]);
841 #undef COPY
842 }
843
844 int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
845 {
846 MpegEncContext bak;
847 int i, ret;
848 // FIXME copy only needed parts
849 // START_TIMER
850 backup_duplicate_context(&bak, dst);
851 memcpy(dst, src, sizeof(MpegEncContext));
852 backup_duplicate_context(dst, &bak);
853 for (i = 0; i < 12; i++) {
854 dst->pblocks[i] = &dst->block[i];
855 }
856 if (dst->avctx->codec_tag == AV_RL32("VCR2"))
857 exchange_uv(dst);
858 if (!dst->edge_emu_buffer &&
859 (ret = frame_size_alloc(dst, dst->linesize)) < 0) {
860 av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
861 "scratch buffers.\n");
862 return ret;
863 }
864 // STOP_TIMER("update_duplicate_context")
865 // about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads
866 return 0;
867 }
868
869 int ff_mpeg_update_thread_context(AVCodecContext *dst,
870 const AVCodecContext *src)
871 {
872 int i, ret;
873 MpegEncContext *s = dst->priv_data, *s1 = src->priv_data;
874
875 if (dst == src || !s1->context_initialized)
876 return 0;
877
878 // FIXME can parameters change on I-frames?
879 // in that case dst may need a reinit
880 if (!s->context_initialized) {
881 memcpy(s, s1, sizeof(MpegEncContext));
882
883 s->avctx = dst;
884 s->bitstream_buffer = NULL;
885 s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
886
887 ff_MPV_common_init(s);
888 }
889
890 if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
891 int err;
892 s->context_reinit = 0;
893 s->height = s1->height;
894 s->width = s1->width;
895 if ((err = ff_MPV_common_frame_size_change(s)) < 0)
896 return err;
897 }
898
899 s->avctx->coded_height = s1->avctx->coded_height;
900 s->avctx->coded_width = s1->avctx->coded_width;
901 s->avctx->width = s1->avctx->width;
902 s->avctx->height = s1->avctx->height;
903
904 s->coded_picture_number = s1->coded_picture_number;
905 s->picture_number = s1->picture_number;
906
907 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
908 ff_mpeg_unref_picture(s, &s->picture[i]);
909 if (s1->picture[i].f.buf[0] &&
910 (ret = ff_mpeg_ref_picture(s, &s->picture[i], &s1->picture[i])) < 0)
911 return ret;
912 }
913
914 #define UPDATE_PICTURE(pic)\
915 do {\
916 ff_mpeg_unref_picture(s, &s->pic);\
917 if (s1->pic.f.buf[0])\
918 ret = ff_mpeg_ref_picture(s, &s->pic, &s1->pic);\
919 else\
920 ret = update_picture_tables(&s->pic, &s1->pic);\
921 if (ret < 0)\
922 return ret;\
923 } while (0)
924
925 UPDATE_PICTURE(current_picture);
926 UPDATE_PICTURE(last_picture);
927 UPDATE_PICTURE(next_picture);
928
929 s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1);
930 s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
931 s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1);
932
933 // Error/bug resilience
934 s->next_p_frame_damaged = s1->next_p_frame_damaged;
935 s->workaround_bugs = s1->workaround_bugs;
936
937 // MPEG4 timing info
938 memcpy(&s->last_time_base, &s1->last_time_base,
939 (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
940 (char *) &s1->last_time_base);
941
942 // B-frame info
943 s->max_b_frames = s1->max_b_frames;
944 s->low_delay = s1->low_delay;
945 s->droppable = s1->droppable;
946
947 // DivX handling (doesn't work)
948 s->divx_packed = s1->divx_packed;
949
950 if (s1->bitstream_buffer) {
951 if (s1->bitstream_buffer_size +
952 FF_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size)
953 av_fast_malloc(&s->bitstream_buffer,
954 &s->allocated_bitstream_buffer_size,
955 s1->allocated_bitstream_buffer_size);
956 s->bitstream_buffer_size = s1->bitstream_buffer_size;
957 memcpy(s->bitstream_buffer, s1->bitstream_buffer,
958 s1->bitstream_buffer_size);
959 memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
960 FF_INPUT_BUFFER_PADDING_SIZE);
961 }
962
963 // linesize dependend scratch buffer allocation
964 if (!s->edge_emu_buffer)
965 if (s1->linesize) {
966 if (frame_size_alloc(s, s1->linesize) < 0) {
967 av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
968 "scratch buffers.\n");
969 return AVERROR(ENOMEM);
970 }
971 } else {
972 av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
973 "be allocated due to unknown size.\n");
974 return AVERROR_BUG;
975 }
976
977 // MPEG2/interlacing info
978 memcpy(&s->progressive_sequence, &s1->progressive_sequence,
979 (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
980
981 if (!s1->first_field) {
982 s->last_pict_type = s1->pict_type;
983 if (s1->current_picture_ptr)
984 s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f.quality;
985 }
986
987 return 0;
988 }
989
990 /**
991 * Set the given MpegEncContext to common defaults
992 * (same for encoding and decoding).
993 * The changed fields will not depend upon the
994 * prior state of the MpegEncContext.
995 */
996 void ff_MPV_common_defaults(MpegEncContext *s)
997 {
998 s->y_dc_scale_table =
999 s->c_dc_scale_table = ff_mpeg1_dc_scale_table;
1000 s->chroma_qscale_table = ff_default_chroma_qscale_table;
1001 s->progressive_frame = 1;
1002 s->progressive_sequence = 1;
1003 s->picture_structure = PICT_FRAME;
1004
1005 s->coded_picture_number = 0;
1006 s->picture_number = 0;
1007
1008 s->f_code = 1;
1009 s->b_code = 1;
1010
1011 s->slice_context_count = 1;
1012 }
1013
1014 /**
1015 * Set the given MpegEncContext to defaults for decoding.
1016 * the changed fields will not depend upon
1017 * the prior state of the MpegEncContext.
1018 */
1019 void ff_MPV_decode_defaults(MpegEncContext *s)
1020 {
1021 ff_MPV_common_defaults(s);
1022 }
1023
1024 static int init_er(MpegEncContext *s)
1025 {
1026 ERContext *er = &s->er;
1027 int mb_array_size = s->mb_height * s->mb_stride;
1028 int i;
1029
1030 er->avctx = s->avctx;
1031 er->dsp = &s->dsp;
1032
1033 er->mb_index2xy = s->mb_index2xy;
1034 er->mb_num = s->mb_num;
1035 er->mb_width = s->mb_width;
1036 er->mb_height = s->mb_height;
1037 er->mb_stride = s->mb_stride;
1038 er->b8_stride = s->b8_stride;
1039
1040 er->er_temp_buffer = av_malloc(s->mb_height * s->mb_stride);
1041 er->error_status_table = av_mallocz(mb_array_size);
1042 if (!er->er_temp_buffer || !er->error_status_table)
1043 goto fail;
1044
1045 er->mbskip_table = s->mbskip_table;
1046 er->mbintra_table = s->mbintra_table;
1047
1048 for (i = 0; i < FF_ARRAY_ELEMS(s->dc_val); i++)
1049 er->dc_val[i] = s->dc_val[i];
1050
1051 er->decode_mb = mpeg_er_decode_mb;
1052 er->opaque = s;
1053
1054 return 0;
1055 fail:
1056 av_freep(&er->er_temp_buffer);
1057 av_freep(&er->error_status_table);
1058 return AVERROR(ENOMEM);
1059 }
1060
1061 /**
1062 * Initialize and allocates MpegEncContext fields dependent on the resolution.
1063 */
1064 static int init_context_frame(MpegEncContext *s)
1065 {
1066 int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
1067
1068 s->mb_width = (s->width + 15) / 16;
1069 s->mb_stride = s->mb_width + 1;
1070 s->b8_stride = s->mb_width * 2 + 1;
1071 s->b4_stride = s->mb_width * 4 + 1;
1072 mb_array_size = s->mb_height * s->mb_stride;
1073 mv_table_size = (s->mb_height + 2) * s->mb_stride + 1;
1074
1075 /* set default edge pos, will be overriden
1076 * in decode_header if needed */
1077 s->h_edge_pos = s->mb_width * 16;
1078 s->v_edge_pos = s->mb_height * 16;
1079
1080 s->mb_num = s->mb_width * s->mb_height;
1081
1082 s->block_wrap[0] =
1083 s->block_wrap[1] =
1084 s->block_wrap[2] =
1085 s->block_wrap[3] = s->b8_stride;
1086 s->block_wrap[4] =
1087 s->block_wrap[5] = s->mb_stride;
1088
1089 y_size = s->b8_stride * (2 * s->mb_height + 1);
1090 c_size = s->mb_stride * (s->mb_height + 1);
1091 yc_size = y_size + 2 * c_size;
1092
1093 FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num + 1) * sizeof(int),
1094 fail); // error ressilience code looks cleaner with this
1095 for (y = 0; y < s->mb_height; y++)
1096 for (x = 0; x < s->mb_width; x++)
1097 s->mb_index2xy[x + y * s->mb_width] = x + y * s->mb_stride;
1098
1099 s->mb_index2xy[s->mb_height * s->mb_width] =
1100 (s->mb_height - 1) * s->mb_stride + s->mb_width; // FIXME really needed?
1101
1102 if (s->encoding) {
1103 /* Allocate MV tables */
1104 FF_ALLOCZ_OR_GOTO(s->avctx, s->p_mv_table_base,
1105 mv_table_size * 2 * sizeof(int16_t), fail);
1106 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_forw_mv_table_base,
1107 mv_table_size * 2 * sizeof(int16_t), fail);
1108 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_back_mv_table_base,
1109 mv_table_size * 2 * sizeof(int16_t), fail);
1110 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_forw_mv_table_base,
1111 mv_table_size * 2 * sizeof(int16_t), fail);
1112 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_back_mv_table_base,
1113 mv_table_size * 2 * sizeof(int16_t), fail);
1114 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_direct_mv_table_base,
1115 mv_table_size * 2 * sizeof(int16_t), fail);
1116 s->p_mv_table = s->p_mv_table_base + s->mb_stride + 1;
1117 s->b_forw_mv_table = s->b_forw_mv_table_base + s->mb_stride + 1;
1118 s->b_back_mv_table = s->b_back_mv_table_base + s->mb_stride + 1;
1119 s->b_bidir_forw_mv_table = s->b_bidir_forw_mv_table_base +
1120 s->mb_stride + 1;
1121 s->b_bidir_back_mv_table = s->b_bidir_back_mv_table_base +
1122 s->mb_stride + 1;
1123 s->b_direct_mv_table = s->b_direct_mv_table_base + s->mb_stride + 1;
1124
1125 /* Allocate MB type table */
1126 FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_type, mb_array_size *
1127 sizeof(uint16_t), fail); // needed for encoding
1128
1129 FF_ALLOCZ_OR_GOTO(s->avctx, s->lambda_table, mb_array_size *
1130 sizeof(int), fail);
1131
1132 FF_ALLOC_OR_GOTO(s->avctx, s->cplx_tab,
1133 mb_array_size * sizeof(float), fail);
1134 FF_ALLOC_OR_GOTO(s->avctx, s->bits_tab,
1135 mb_array_size * sizeof(float), fail);
1136
1137 }
1138
1139 if (s->codec_id == AV_CODEC_ID_MPEG4 ||
1140 (s->flags & CODEC_FLAG_INTERLACED_ME)) {
1141 /* interlaced direct mode decoding tables */
1142 for (i = 0; i < 2; i++) {
1143 int j, k;
1144 for (j = 0; j < 2; j++) {
1145 for (k = 0; k < 2; k++) {
1146 FF_ALLOCZ_OR_GOTO(s->avctx,
1147 s->b_field_mv_table_base[i][j][k],
1148 mv_table_size * 2 * sizeof(int16_t),
1149 fail);
1150 s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] +
1151 s->mb_stride + 1;
1152 }
1153 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_select_table [i][j],
1154 mb_array_size * 2 * sizeof(uint8_t), fail);
1155 FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_mv_table_base[i][j],
1156 mv_table_size * 2 * sizeof(int16_t), fail);
1157 s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j]
1158 + s->mb_stride + 1;
1159 }
1160 FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_select_table[i],
1161 mb_array_size * 2 * sizeof(uint8_t), fail);
1162 }
1163 }
1164 if (s->out_format == FMT_H263) {
1165 /* cbp values */
1166 FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size, fail);
1167 s->coded_block = s->coded_block_base + s->b8_stride + 1;
1168
1169 /* cbp, ac_pred, pred_dir */
1170 FF_ALLOCZ_OR_GOTO(s->avctx, s->cbp_table,
1171 mb_array_size * sizeof(uint8_t), fail);
1172 FF_ALLOCZ_OR_GOTO(s->avctx, s->pred_dir_table,
1173 mb_array_size * sizeof(uint8_t), fail);
1174 }
1175
1176 if (s->h263_pred || s->h263_plus || !s->encoding) {
1177 /* dc values */
1178 // MN: we need these for error resilience of intra-frames
1179 FF_ALLOCZ_OR_GOTO(s->avctx, s->dc_val_base,
1180 yc_size * sizeof(int16_t), fail);
1181 s->dc_val[0] = s->dc_val_base + s->b8_stride + 1;
1182 s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1;
1183 s->dc_val[2] = s->dc_val[1] + c_size;
1184 for (i = 0; i < yc_size; i++)
1185 s->dc_val_base[i] = 1024;
1186 }
1187
1188 /* which mb is a intra block */
1189 FF_ALLOCZ_OR_GOTO(s->avctx, s->mbintra_table, mb_array_size, fail);
1190 memset(s->mbintra_table, 1, mb_array_size);
1191
1192 /* init macroblock skip table */
1193 FF_ALLOCZ_OR_GOTO(s->avctx, s->mbskip_table, mb_array_size + 2, fail);
1194 // Note the + 1 is for a quicker mpeg4 slice_end detection
1195
1196 return init_er(s);
1197 fail:
1198 return AVERROR(ENOMEM);
1199 }
1200
1201 /**
1202 * init common structure for both encoder and decoder.
1203 * this assumes that some variables like width/height are already set
1204 */
1205 av_cold int ff_MPV_common_init(MpegEncContext *s)
1206 {
1207 int i;
1208 int nb_slices = (HAVE_THREADS &&
1209 s->avctx->active_thread_type & FF_THREAD_SLICE) ?
1210 s->avctx->thread_count : 1;
1211
1212 if (s->encoding && s->avctx->slices)
1213 nb_slices = s->avctx->slices;
1214
1215 if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
1216 s->mb_height = (s->height + 31) / 32 * 2;
1217 else
1218 s->mb_height = (s->height + 15) / 16;
1219
1220 if (s->avctx->pix_fmt == AV_PIX_FMT_NONE) {
1221 av_log(s->avctx, AV_LOG_ERROR,
1222 "decoding to AV_PIX_FMT_NONE is not supported.\n");
1223 return -1;
1224 }
1225
1226 if (nb_slices > MAX_THREADS || (nb_slices > s->mb_height && s->mb_height)) {
1227 int max_slices;
1228 if (s->mb_height)
1229 max_slices = FFMIN(MAX_THREADS, s->mb_height);
1230 else
1231 max_slices = MAX_THREADS;
1232 av_log(s->avctx, AV_LOG_WARNING, "too many threads/slices (%d),"
1233 " reducing to %d\n", nb_slices, max_slices);
1234 nb_slices = max_slices;
1235 }
1236
1237 if ((s->width || s->height) &&
1238 av_image_check_size(s->width, s->height, 0, s->avctx))
1239 return -1;
1240
1241 ff_dct_common_init(s);
1242
1243 s->flags = s->avctx->flags;
1244 s->flags2 = s->avctx->flags2;
1245
1246 /* set chroma shifts */
1247 av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
1248 &s->chroma_x_shift,
1249 &s->chroma_y_shift);
1250
1251 /* convert fourcc to upper case */
1252 s->codec_tag = avpriv_toupper4(s->avctx->codec_tag);
1253
1254 s->stream_codec_tag = avpriv_toupper4(s->avctx->stream_codec_tag);
1255
1256 FF_ALLOCZ_OR_GOTO(s->avctx, s->picture,
1257 MAX_PICTURE_COUNT * sizeof(Picture), fail);
1258 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1259 av_frame_unref(&s->picture[i].f);
1260 }
1261 memset(&s->next_picture, 0, sizeof(s->next_picture));
1262 memset(&s->last_picture, 0, sizeof(s->last_picture));
1263 memset(&s->current_picture, 0, sizeof(s->current_picture));
1264 av_frame_unref(&s->next_picture.f);
1265 av_frame_unref(&s->last_picture.f);
1266 av_frame_unref(&s->current_picture.f);
1267
1268 if (s->width && s->height) {
1269 if (init_context_frame(s))
1270 goto fail;
1271
1272 s->parse_context.state = -1;
1273 }
1274
1275 s->context_initialized = 1;
1276 s->thread_context[0] = s;
1277
1278 if (s->width && s->height) {
1279 if (nb_slices > 1) {
1280 for (i = 1; i < nb_slices; i++) {
1281 s->thread_context[i] = av_malloc(sizeof(MpegEncContext));
1282 memcpy(s->thread_context[i], s, sizeof(MpegEncContext));
1283 }
1284
1285 for (i = 0; i < nb_slices; i++) {
1286 if (init_duplicate_context(s->thread_context[i]) < 0)
1287 goto fail;
1288 s->thread_context[i]->start_mb_y =
1289 (s->mb_height * (i) + nb_slices / 2) / nb_slices;
1290 s->thread_context[i]->end_mb_y =
1291 (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
1292 }
1293 } else {
1294 if (init_duplicate_context(s) < 0)
1295 goto fail;
1296 s->start_mb_y = 0;
1297 s->end_mb_y = s->mb_height;
1298 }
1299 s->slice_context_count = nb_slices;
1300 }
1301
1302 return 0;
1303 fail:
1304 ff_MPV_common_end(s);
1305 return -1;
1306 }
1307
1308 /**
1309 * Frees and resets MpegEncContext fields depending on the resolution.
1310 * Is used during resolution changes to avoid a full reinitialization of the
1311 * codec.
1312 */
1313 static int free_context_frame(MpegEncContext *s)
1314 {
1315 int i, j, k;
1316
1317 av_freep(&s->mb_type);
1318 av_freep(&s->p_mv_table_base);
1319 av_freep(&s->b_forw_mv_table_base);
1320 av_freep(&s->b_back_mv_table_base);
1321 av_freep(&s->b_bidir_forw_mv_table_base);
1322 av_freep(&s->b_bidir_back_mv_table_base);
1323 av_freep(&s->b_direct_mv_table_base);
1324 s->p_mv_table = NULL;
1325 s->b_forw_mv_table = NULL;
1326 s->b_back_mv_table = NULL;
1327 s->b_bidir_forw_mv_table = NULL;
1328 s->b_bidir_back_mv_table = NULL;
1329 s->b_direct_mv_table = NULL;
1330 for (i = 0; i < 2; i++) {
1331 for (j = 0; j < 2; j++) {
1332 for (k = 0; k < 2; k++) {
1333 av_freep(&s->b_field_mv_table_base[i][j][k]);
1334 s->b_field_mv_table[i][j][k] = NULL;
1335 }
1336 av_freep(&s->b_field_select_table[i][j]);
1337 av_freep(&s->p_field_mv_table_base[i][j]);
1338 s->p_field_mv_table[i][j] = NULL;
1339 }
1340 av_freep(&s->p_field_select_table[i]);
1341 }
1342
1343 av_freep(&s->dc_val_base);
1344 av_freep(&s->coded_block_base);
1345 av_freep(&s->mbintra_table);
1346 av_freep(&s->cbp_table);
1347 av_freep(&s->pred_dir_table);
1348
1349 av_freep(&s->mbskip_table);
1350
1351 av_freep(&s->er.error_status_table);
1352 av_freep(&s->er.er_temp_buffer);
1353 av_freep(&s->mb_index2xy);
1354 av_freep(&s->lambda_table);
1355 av_freep(&s->cplx_tab);
1356 av_freep(&s->bits_tab);
1357
1358 s->linesize = s->uvlinesize = 0;
1359
1360 return 0;
1361 }
1362
1363 int ff_MPV_common_frame_size_change(MpegEncContext *s)
1364 {
1365 int i, err = 0;
1366
1367 if (s->slice_context_count > 1) {
1368 for (i = 0; i < s->slice_context_count; i++) {
1369 free_duplicate_context(s->thread_context[i]);
1370 }
1371 for (i = 1; i < s->slice_context_count; i++) {
1372 av_freep(&s->thread_context[i]);
1373 }
1374 } else
1375 free_duplicate_context(s);
1376
1377 if ((err = free_context_frame(s)) < 0)
1378 return err;
1379
1380 if (s->picture)
1381 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1382 s->picture[i].needs_realloc = 1;
1383 }
1384
1385 s->last_picture_ptr =
1386 s->next_picture_ptr =
1387 s->current_picture_ptr = NULL;
1388
1389 // init
1390 if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
1391 s->mb_height = (s->height + 31) / 32 * 2;
1392 else
1393 s->mb_height = (s->height + 15) / 16;
1394
1395 if ((s->width || s->height) &&
1396 av_image_check_size(s->width, s->height, 0, s->avctx))
1397 return AVERROR_INVALIDDATA;
1398
1399 if ((err = init_context_frame(s)))
1400 goto fail;
1401
1402 s->thread_context[0] = s;
1403
1404 if (s->width && s->height) {
1405 int nb_slices = s->slice_context_count;
1406 if (nb_slices > 1) {
1407 for (i = 1; i < nb_slices; i++) {
1408 s->thread_context[i] = av_malloc(sizeof(MpegEncContext));
1409 memcpy(s->thread_context[i], s, sizeof(MpegEncContext));
1410 }
1411
1412 for (i = 0; i < nb_slices; i++) {
1413 if (init_duplicate_context(s->thread_context[i]) < 0)
1414 goto fail;
1415 s->thread_context[i]->start_mb_y =
1416 (s->mb_height * (i) + nb_slices / 2) / nb_slices;
1417 s->thread_context[i]->end_mb_y =
1418 (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
1419 }
1420 } else {
1421 if (init_duplicate_context(s) < 0)
1422 goto fail;
1423 s->start_mb_y = 0;
1424 s->end_mb_y = s->mb_height;
1425 }
1426 s->slice_context_count = nb_slices;
1427 }
1428
1429 return 0;
1430 fail:
1431 ff_MPV_common_end(s);
1432 return err;
1433 }
1434
1435 /* init common structure for both encoder and decoder */
1436 void ff_MPV_common_end(MpegEncContext *s)
1437 {
1438 int i;
1439
1440 if (s->slice_context_count > 1) {
1441 for (i = 0; i < s->slice_context_count; i++) {
1442 free_duplicate_context(s->thread_context[i]);
1443 }
1444 for (i = 1; i < s->slice_context_count; i++) {
1445 av_freep(&s->thread_context[i]);
1446 }
1447 s->slice_context_count = 1;
1448 } else free_duplicate_context(s);
1449
1450 av_freep(&s->parse_context.buffer);
1451 s->parse_context.buffer_size = 0;
1452
1453 av_freep(&s->bitstream_buffer);
1454 s->allocated_bitstream_buffer_size = 0;
1455
1456 if (s->picture) {
1457 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1458 ff_free_picture_tables(&s->picture[i]);
1459 ff_mpeg_unref_picture(s, &s->picture[i]);
1460 }
1461 }
1462 av_freep(&s->picture);
1463 ff_free_picture_tables(&s->last_picture);
1464 ff_mpeg_unref_picture(s, &s->last_picture);
1465 ff_free_picture_tables(&s->current_picture);
1466 ff_mpeg_unref_picture(s, &s->current_picture);
1467 ff_free_picture_tables(&s->next_picture);
1468 ff_mpeg_unref_picture(s, &s->next_picture);
1469
1470 free_context_frame(s);
1471
1472 s->context_initialized = 0;
1473 s->last_picture_ptr =
1474 s->next_picture_ptr =
1475 s->current_picture_ptr = NULL;
1476 s->linesize = s->uvlinesize = 0;
1477 }
1478
1479 av_cold void ff_init_rl(RLTable *rl,
1480 uint8_t static_store[2][2 * MAX_RUN + MAX_LEVEL + 3])
1481 {
1482 int8_t max_level[MAX_RUN + 1], max_run[MAX_LEVEL + 1];
1483 uint8_t index_run[MAX_RUN + 1];
1484 int last, run, level, start, end, i;
1485
1486 /* If table is static, we can quit if rl->max_level[0] is not NULL */
1487 if (static_store && rl->max_level[0])
1488 return;
1489
1490 /* compute max_level[], max_run[] and index_run[] */
1491 for (last = 0; last < 2; last++) {
1492 if (last == 0) {
1493 start = 0;
1494 end = rl->last;
1495 } else {
1496 start = rl->last;
1497 end = rl->n;
1498 }
1499
1500 memset(max_level, 0, MAX_RUN + 1);
1501 memset(max_run, 0, MAX_LEVEL + 1);
1502 memset(index_run, rl->n, MAX_RUN + 1);
1503 for (i = start; i < end; i++) {
1504 run = rl->table_run[i];
1505 level = rl->table_level[i];
1506 if (index_run[run] == rl->n)
1507 index_run[run] = i;
1508 if (level > max_level[run])
1509 max_level[run] = level;
1510 if (run > max_run[level])
1511 max_run[level] = run;
1512 }
1513 if (static_store)
1514 rl->max_level[last] = static_store[last];
1515 else
1516 rl->max_level[last] = av_malloc(MAX_RUN + 1);
1517 memcpy(rl->max_level[last], max_level, MAX_RUN + 1);
1518 if (static_store)
1519 rl->max_run[last] = static_store[last] + MAX_RUN + 1;
1520 else
1521 rl->max_run[last] = av_malloc(MAX_LEVEL + 1);
1522 memcpy(rl->max_run[last], max_run, MAX_LEVEL + 1);
1523 if (static_store)
1524 rl->index_run[last] = static_store[last] + MAX_RUN + MAX_LEVEL + 2;
1525 else
1526 rl->index_run[last] = av_malloc(MAX_RUN + 1);
1527 memcpy(rl->index_run[last], index_run, MAX_RUN + 1);
1528 }
1529 }
1530
1531 av_cold void ff_init_vlc_rl(RLTable *rl)
1532 {
1533 int i, q;
1534
1535 for (q = 0; q < 32; q++) {
1536 int qmul = q * 2;
1537 int qadd = (q - 1) | 1;
1538
1539 if (q == 0) {
1540 qmul = 1;
1541 qadd = 0;
1542 }
1543 for (i = 0; i < rl->vlc.table_size; i++) {
1544 int code = rl->vlc.table[i][0];
1545 int len = rl->vlc.table[i][1];
1546 int level, run;
1547
1548 if (len == 0) { // illegal code
1549 run = 66;
1550 level = MAX_LEVEL;
1551 } else if (len < 0) { // more bits needed
1552 run = 0;
1553 level = code;
1554 } else {
1555 if (code == rl->n) { // esc
1556 run = 66;
1557 level = 0;
1558 } else {
1559 run = rl->table_run[code] + 1;
1560 level = rl->table_level[code] * qmul + qadd;
1561 if (code >= rl->last) run += 192;
1562 }
1563 }
1564 rl->rl_vlc[q][i].len = len;
1565 rl->rl_vlc[q][i].level = level;
1566 rl->rl_vlc[q][i].run = run;
1567 }
1568 }
1569 }
1570
1571 static void release_unused_pictures(MpegEncContext *s)
1572 {
1573 int i;
1574
1575 /* release non reference frames */
1576 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1577 if (!s->picture[i].reference)
1578 ff_mpeg_unref_picture(s, &s->picture[i]);
1579 }
1580 }
1581
1582 static inline int pic_is_unused(MpegEncContext *s, Picture *pic)
1583 {
1584 if (pic->f.buf[0] == NULL)
1585 return 1;
1586 if (pic->needs_realloc && !(pic->reference & DELAYED_PIC_REF))
1587 return 1;
1588 return 0;
1589 }
1590
1591 static int find_unused_picture(MpegEncContext *s, int shared)
1592 {
1593 int i;
1594
1595 if (shared) {
1596 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1597 if (s->picture[i].f.buf[0] == NULL)
1598 return i;
1599 }
1600 } else {
1601 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1602 if (pic_is_unused(s, &s->picture[i]))
1603 return i;
1604 }
1605 }
1606
1607 return AVERROR_INVALIDDATA;
1608 }
1609
1610 int ff_find_unused_picture(MpegEncContext *s, int shared)
1611 {
1612 int ret = find_unused_picture(s, shared);
1613
1614 if (ret >= 0 && ret < MAX_PICTURE_COUNT) {
1615 if (s->picture[ret].needs_realloc) {
1616 s->picture[ret].needs_realloc = 0;
1617 ff_free_picture_tables(&s->picture[ret]);
1618 ff_mpeg_unref_picture(s, &s->picture[ret]);
1619 }
1620 }
1621 return ret;
1622 }
1623
1624 /**
1625 * generic function called after decoding
1626 * the header and before a frame is decoded.
1627 */
1628 int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
1629 {
1630 int i, ret;
1631 Picture *pic;
1632 s->mb_skipped = 0;
1633
1634 /* mark & release old frames */
1635 if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
1636 s->last_picture_ptr != s->next_picture_ptr &&
1637 s->last_picture_ptr->f.buf[0]) {
1638 ff_mpeg_unref_picture(s, s->last_picture_ptr);
1639 }
1640
1641 /* release forgotten pictures */
1642 /* if (mpeg124/h263) */
1643 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1644 if (&s->picture[i] != s->last_picture_ptr &&
1645 &s->picture[i] != s->next_picture_ptr &&
1646 s->picture[i].reference && !s->picture[i].needs_realloc) {
1647 if (!(avctx->active_thread_type & FF_THREAD_FRAME))
1648 av_log(avctx, AV_LOG_ERROR,
1649 "releasing zombie picture\n");
1650 ff_mpeg_unref_picture(s, &s->picture[i]);
1651 }
1652 }
1653
1654 ff_mpeg_unref_picture(s, &s->current_picture);
1655
1656 release_unused_pictures(s);
1657
1658 if (s->current_picture_ptr &&
1659 s->current_picture_ptr->f.buf[0] == NULL) {
1660 // we already have a unused image
1661 // (maybe it was set before reading the header)
1662 pic = s->current_picture_ptr;
1663 } else {
1664 i = ff_find_unused_picture(s, 0);
1665 if (i < 0) {
1666 av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1667 return i;
1668 }
1669 pic = &s->picture[i];
1670 }
1671
1672 pic->reference = 0;
1673 if (!s->droppable) {
1674 if (s->pict_type != AV_PICTURE_TYPE_B)
1675 pic->reference = 3;
1676 }
1677
1678 pic->f.coded_picture_number = s->coded_picture_number++;
1679
1680 if (ff_alloc_picture(s, pic, 0) < 0)
1681 return -1;
1682
1683 s->current_picture_ptr = pic;
1684 // FIXME use only the vars from current_pic
1685 s->current_picture_ptr->f.top_field_first = s->top_field_first;
1686 if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
1687 s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1688 if (s->picture_structure != PICT_FRAME)
1689 s->current_picture_ptr->f.top_field_first =
1690 (s->picture_structure == PICT_TOP_FIELD) == s->first_field;
1691 }
1692 s->current_picture_ptr->f.interlaced_frame = !s->progressive_frame &&
1693 !s->progressive_sequence;
1694 s->current_picture_ptr->field_picture = s->picture_structure != PICT_FRAME;
1695
1696 s->current_picture_ptr->f.pict_type = s->pict_type;
1697 // if (s->flags && CODEC_FLAG_QSCALE)
1698 // s->current_picture_ptr->quality = s->new_picture_ptr->quality;
1699 s->current_picture_ptr->f.key_frame = s->pict_type == AV_PICTURE_TYPE_I;
1700
1701 if ((ret = ff_mpeg_ref_picture(s, &s->current_picture,
1702 s->current_picture_ptr)) < 0)
1703 return ret;
1704
1705 if (s->pict_type != AV_PICTURE_TYPE_B) {
1706 s->last_picture_ptr = s->next_picture_ptr;
1707 if (!s->droppable)
1708 s->next_picture_ptr = s->current_picture_ptr;
1709 }
1710 av_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
1711 s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
1712 s->last_picture_ptr ? s->last_picture_ptr->f.data[0] : NULL,
1713 s->next_picture_ptr ? s->next_picture_ptr->f.data[0] : NULL,
1714 s->current_picture_ptr ? s->current_picture_ptr->f.data[0] : NULL,
1715 s->pict_type, s->droppable);
1716
1717 if ((s->last_picture_ptr == NULL ||
1718 s->last_picture_ptr->f.buf[0] == NULL) &&
1719 (s->pict_type != AV_PICTURE_TYPE_I ||
1720 s->picture_structure != PICT_FRAME)) {
1721 int h_chroma_shift, v_chroma_shift;
1722 av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
1723 &h_chroma_shift, &v_chroma_shift);
1724 if (s->pict_type != AV_PICTURE_TYPE_I)
1725 av_log(avctx, AV_LOG_ERROR,
1726 "warning: first frame is no keyframe\n");
1727 else if (s->picture_structure != PICT_FRAME)
1728 av_log(avctx, AV_LOG_INFO,
1729 "allocate dummy last picture for field based first keyframe\n");
1730
1731 /* Allocate a dummy frame */
1732 i = ff_find_unused_picture(s, 0);
1733 if (i < 0) {
1734 av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1735 return i;
1736 }
1737 s->last_picture_ptr = &s->picture[i];
1738
1739 s->last_picture_ptr->reference = 3;
1740 s->last_picture_ptr->f.pict_type = AV_PICTURE_TYPE_I;
1741
1742 if (ff_alloc_picture(s, s->last_picture_ptr, 0) < 0) {
1743 s->last_picture_ptr = NULL;
1744 return -1;
1745 }
1746
1747 memset(s->last_picture_ptr->f.data[0], 0,
1748 avctx->height * s->last_picture_ptr->f.linesize[0]);
1749 memset(s->last_picture_ptr->f.data[1], 0x80,
1750 (avctx->height >> v_chroma_shift) *
1751 s->last_picture_ptr->f.linesize[1]);
1752 memset(s->last_picture_ptr->f.data[2], 0x80,
1753 (avctx->height >> v_chroma_shift) *
1754 s->last_picture_ptr->f.linesize[2]);
1755
1756 ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
1757 ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
1758 }
1759 if ((s->next_picture_ptr == NULL ||
1760 s->next_picture_ptr->f.buf[0] == NULL) &&
1761 s->pict_type == AV_PICTURE_TYPE_B) {
1762 /* Allocate a dummy frame */
1763 i = ff_find_unused_picture(s, 0);
1764 if (i < 0) {
1765 av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1766 return i;
1767 }
1768 s->next_picture_ptr = &s->picture[i];
1769
1770 s->next_picture_ptr->reference = 3;
1771 s->next_picture_ptr->f.pict_type = AV_PICTURE_TYPE_I;
1772
1773 if (ff_alloc_picture(s, s->next_picture_ptr, 0) < 0) {
1774 s->next_picture_ptr = NULL;
1775 return -1;
1776 }
1777 ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
1778 ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
1779 }
1780
1781 if (s->last_picture_ptr) {
1782 ff_mpeg_unref_picture(s, &s->last_picture);
1783 if (s->last_picture_ptr->f.buf[0] &&
1784 (ret = ff_mpeg_ref_picture(s, &s->last_picture,
1785 s->last_picture_ptr)) < 0)
1786 return ret;
1787 }
1788 if (s->next_picture_ptr) {
1789 ff_mpeg_unref_picture(s, &s->next_picture);
1790 if (s->next_picture_ptr->f.buf[0] &&
1791 (ret = ff_mpeg_ref_picture(s, &s->next_picture,
1792 s->next_picture_ptr)) < 0)
1793 return ret;
1794 }
1795
1796 if (s->pict_type != AV_PICTURE_TYPE_I &&
1797 !(s->last_picture_ptr && s->last_picture_ptr->f.buf[0])) {
1798 av_log(s, AV_LOG_ERROR,
1799 "Non-reference picture received and no reference available\n");
1800 return AVERROR_INVALIDDATA;
1801 }
1802
1803 if (s->picture_structure!= PICT_FRAME) {
1804 int i;
1805 for (i = 0; i < 4; i++) {
1806 if (s->picture_structure == PICT_BOTTOM_FIELD) {
1807 s->current_picture.f.data[i] +=
1808 s->current_picture.f.linesize[i];
1809 }
1810 s->current_picture.f.linesize[i] *= 2;
1811 s->last_picture.f.linesize[i] *= 2;
1812 s->next_picture.f.linesize[i] *= 2;
1813 }
1814 }
1815
1816 s->err_recognition = avctx->err_recognition;
1817
1818 /* set dequantizer, we can't do it during init as
1819 * it might change for mpeg4 and we can't do it in the header
1820 * decode as init is not called for mpeg4 there yet */
1821 if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1822 s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
1823 s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
1824 } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
1825 s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
1826 s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
1827 } else {
1828 s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra;
1829 s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
1830 }
1831
1832 #if FF_API_XVMC
1833 FF_DISABLE_DEPRECATION_WARNINGS
1834 if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
1835 return ff_xvmc_field_start(s, avctx);
1836 FF_ENABLE_DEPRECATION_WARNINGS
1837 #endif /* FF_API_XVMC */
1838
1839 return 0;
1840 }
1841
1842 /* called after a frame has been decoded. */
1843 void ff_MPV_frame_end(MpegEncContext *s)
1844 {
1845 #if FF_API_XVMC
1846 FF_DISABLE_DEPRECATION_WARNINGS
1847 /* redraw edges for the frame if decoding didn't complete */
1848 // just to make sure that all data is rendered.
1849 if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration) {
1850 ff_xvmc_field_end(s);
1851 } else
1852 FF_ENABLE_DEPRECATION_WARNINGS
1853 #endif /* FF_API_XVMC */
1854
1855 emms_c();
1856
1857 if (s->current_picture.reference)
1858 ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
1859 }
1860
1861 /**
1862 * Print debugging info for the given picture.
1863 */
1864 void ff_print_debug_info(MpegEncContext *s, Picture *p)
1865 {
1866 AVFrame *pict;
1867 if (s->avctx->hwaccel || !p || !p->mb_type)
1868 return;
1869 pict = &p->f;
1870
1871 if (s->avctx->debug & (FF_DEBUG_SKIP | FF_DEBUG_QP | FF_DEBUG_MB_TYPE)) {
1872 int x,y;
1873
1874 av_log(s->avctx,AV_LOG_DEBUG,"New frame, type: ");
1875 switch (pict->pict_type) {
1876 case AV_PICTURE_TYPE_I:
1877 av_log(s->avctx,AV_LOG_DEBUG,"I\n");
1878 break;
1879 case AV_PICTURE_TYPE_P:
1880 av_log(s->avctx,AV_LOG_DEBUG,"P\n");
1881 break;
1882 case AV_PICTURE_TYPE_B:
1883 av_log(s->avctx,AV_LOG_DEBUG,"B\n");
1884 break;
1885 case AV_PICTURE_TYPE_S:
1886 av_log(s->avctx,AV_LOG_DEBUG,"S\n");
1887 break;
1888 case AV_PICTURE_TYPE_SI:
1889 av_log(s->avctx,AV_LOG_DEBUG,"SI\n");
1890 break;
1891 case AV_PICTURE_TYPE_SP:
1892 av_log(s->avctx,AV_LOG_DEBUG,"SP\n");
1893 break;
1894 }
1895 for (y = 0; y < s->mb_height; y++) {
1896 for (x = 0; x < s->mb_width; x++) {
1897 if (s->avctx->debug & FF_DEBUG_SKIP) {
1898 int count = s->mbskip_table[x + y * s->mb_stride];
1899 if (count > 9)
1900 count = 9;
1901 av_log(s->avctx, AV_LOG_DEBUG, "%1d", count);
1902 }
1903 if (s->avctx->debug & FF_DEBUG_QP) {
1904 av_log(s->avctx, AV_LOG_DEBUG, "%2d",
1905 p->qscale_table[x + y * s->mb_stride]);
1906 }
1907 if (s->avctx->debug & FF_DEBUG_MB_TYPE) {
1908 int mb_type = p->mb_type[x + y * s->mb_stride];
1909 // Type & MV direction
1910 if (IS_PCM(mb_type))
1911 av_log(s->avctx, AV_LOG_DEBUG, "P");
1912 else if (IS_INTRA(mb_type) && IS_ACPRED(mb_type))
1913 av_log(s->avctx, AV_LOG_DEBUG, "A");
1914 else if (IS_INTRA4x4(mb_type))
1915 av_log(s->avctx, AV_LOG_DEBUG, "i");
1916 else if (IS_INTRA16x16(mb_type))
1917 av_log(s->avctx, AV_LOG_DEBUG, "I");
1918 else if (IS_DIRECT(mb_type) && IS_SKIP(mb_type))
1919 av_log(s->avctx, AV_LOG_DEBUG, "d");
1920 else if (IS_DIRECT(mb_type))
1921 av_log(s->avctx, AV_LOG_DEBUG, "D");
1922 else if (IS_GMC(mb_type) && IS_SKIP(mb_type))
1923 av_log(s->avctx, AV_LOG_DEBUG, "g");
1924 else if (IS_GMC(mb_type))
1925 av_log(s->avctx, AV_LOG_DEBUG, "G");
1926 else if (IS_SKIP(mb_type))
1927 av_log(s->avctx, AV_LOG_DEBUG, "S");
1928 else if (!USES_LIST(mb_type, 1))
1929 av_log(s->avctx, AV_LOG_DEBUG, ">");
1930 else if (!USES_LIST(mb_type, 0))
1931 av_log(s->avctx, AV_LOG_DEBUG, "<");
1932 else {
1933 assert(USES_LIST(mb_type, 0) && USES_LIST(mb_type, 1));
1934 av_log(s->avctx, AV_LOG_DEBUG, "X");
1935 }
1936
1937 // segmentation
1938 if (IS_8X8(mb_type))
1939 av_log(s->avctx, AV_LOG_DEBUG, "+");
1940 else if (IS_16X8(mb_type))
1941 av_log(s->avctx, AV_LOG_DEBUG, "-");
1942 else if (IS_8X16(mb_type))
1943 av_log(s->avctx, AV_LOG_DEBUG, "|");
1944 else if (IS_INTRA(mb_type) || IS_16X16(mb_type))
1945 av_log(s->avctx, AV_LOG_DEBUG, " ");
1946 else
1947 av_log(s->avctx, AV_LOG_DEBUG, "?");
1948
1949
1950 if (IS_INTERLACED(mb_type))
1951 av_log(s->avctx, AV_LOG_DEBUG, "=");
1952 else
1953 av_log(s->avctx, AV_LOG_DEBUG, " ");
1954 }
1955 }
1956 av_log(s->avctx, AV_LOG_DEBUG, "\n");
1957 }
1958 }
1959 }
1960
1961 /**
1962 * find the lowest MB row referenced in the MVs
1963 */
1964 int ff_MPV_lowest_referenced_row(MpegEncContext *s, int dir)
1965 {
1966 int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
1967 int my, off, i, mvs;
1968
1969 if (s->picture_structure != PICT_FRAME || s->mcsel)
1970 goto unhandled;
1971
1972 switch (s->mv_type) {
1973 case MV_TYPE_16X16:
1974 mvs = 1;
1975 break;
1976 case MV_TYPE_16X8:
1977 mvs = 2;
1978 break;
1979 case MV_TYPE_8X8:
1980 mvs = 4;
1981 break;
1982 default:
1983 goto unhandled;
1984 }
1985
1986 for (i = 0; i < mvs; i++) {
1987 my = s->mv[dir][i][1]<<qpel_shift;
1988 my_max = FFMAX(my_max, my);
1989 my_min = FFMIN(my_min, my);
1990 }
1991
1992 off = (FFMAX(-my_min, my_max) + 63) >> 6;
1993
1994 return FFMIN(FFMAX(s->mb_y + off, 0), s->mb_height-1);
1995 unhandled:
1996 return s->mb_height-1;
1997 }
1998
1999 /* put block[] to dest[] */
2000 static inline void put_dct(MpegEncContext *s,
2001 int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
2002 {
2003 s->dct_unquantize_intra(s, block, i, qscale);
2004 s->dsp.idct_put (dest, line_size, block);
2005 }
2006
2007 /* add block[] to dest[] */
2008 static inline void add_dct(MpegEncContext *s,
2009 int16_t *block, int i, uint8_t *dest, int line_size)
2010 {
2011 if (s->block_last_index[i] >= 0) {
2012 s->dsp.idct_add (dest, line_size, block);
2013 }
2014 }
2015
2016 static inline void add_dequant_dct(MpegEncContext *s,
2017 int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
2018 {
2019 if (s->block_last_index[i] >= 0) {
2020 s->dct_unquantize_inter(s, block, i, qscale);
2021
2022 s->dsp.idct_add (dest, line_size, block);
2023 }
2024 }
2025
2026 /**
2027 * Clean dc, ac, coded_block for the current non-intra MB.
2028 */
2029 void ff_clean_intra_table_entries(MpegEncContext *s)
2030 {
2031 int wrap = s->b8_stride;
2032 int xy = s->block_index[0];
2033
2034 s->dc_val[0][xy ] =
2035 s->dc_val[0][xy + 1 ] =
2036 s->dc_val[0][xy + wrap] =
2037 s->dc_val[0][xy + 1 + wrap] = 1024;
2038 /* ac pred */
2039 memset(s->ac_val[0][xy ], 0, 32 * sizeof(int16_t));
2040 memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
2041 if (s->msmpeg4_version>=3) {
2042 s->coded_block[xy ] =
2043 s->coded_block[xy + 1 ] =
2044 s->coded_block[xy + wrap] =
2045 s->coded_block[xy + 1 + wrap] = 0;
2046 }
2047 /* chroma */
2048 wrap = s->mb_stride;
2049 xy = s->mb_x + s->mb_y * wrap;
2050 s->dc_val[1][xy] =
2051 s->dc_val[2][xy] = 1024;
2052 /* ac pred */
2053 memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
2054 memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
2055
2056 s->mbintra_table[xy]= 0;
2057 }
2058
2059 /* generic function called after a macroblock has been parsed by the
2060 decoder or after it has been encoded by the encoder.
2061
2062 Important variables used:
2063 s->mb_intra : true if intra macroblock
2064 s->mv_dir : motion vector direction
2065 s->mv_type : motion vector type
2066 s->mv : motion vector
2067 s->interlaced_dct : true if interlaced dct used (mpeg2)
2068 */
2069 static av_always_inline
2070 void MPV_decode_mb_internal(MpegEncContext *s, int16_t block[12][64],
2071 int is_mpeg12)
2072 {
2073 const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
2074
2075 #if FF_API_XVMC
2076 FF_DISABLE_DEPRECATION_WARNINGS
2077 if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration){
2078 ff_xvmc_decode_mb(s);//xvmc uses pblocks
2079 return;
2080 }
2081 FF_ENABLE_DEPRECATION_WARNINGS
2082 #endif /* FF_API_XVMC */
2083
2084 if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
2085 /* print DCT coefficients */
2086 int i,j;
2087 av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
2088 for(i=0; i<6; i++){
2089 for(j=0; j<64; j++){
2090 av_log(s->avctx, AV_LOG_DEBUG, "%5d", block[i][s->dsp.idct_permutation[j]]);
2091 }
2092 av_log(s->avctx, AV_LOG_DEBUG, "\n");
2093 }
2094 }
2095
2096 s->current_picture.qscale_table[mb_xy] = s->qscale;
2097
2098 /* update DC predictors for P macroblocks */
2099 if (!s->mb_intra) {
2100 if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) {
2101 if(s->mbintra_table[mb_xy])
2102 ff_clean_intra_table_entries(s);
2103 } else {
2104 s->last_dc[0] =
2105 s->last_dc[1] =
2106 s->last_dc[2] = 128 << s->intra_dc_precision;
2107 }
2108 }
2109 else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
2110 s->mbintra_table[mb_xy]=1;
2111
2112 if ((s->flags&CODEC_FLAG_PSNR) || !(s->encoding && (s->intra_only || s->pict_type==AV_PICTURE_TYPE_B) && s->avctx->mb_decision != FF_MB_DECISION_RD)) { //FIXME precalc
2113 uint8_t *dest_y, *dest_cb, *dest_cr;
2114 int dct_linesize, dct_offset;
2115 op_pixels_func (*op_pix)[4];
2116 qpel_mc_func (*op_qpix)[16];
2117 const int linesize = s->current_picture.f.linesize[0]; //not s->linesize as this would be wrong for field pics
2118 const int uvlinesize = s->current_picture.f.linesize[1];
2119 const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band;
2120 const int block_size = 8;
2121
2122 /* avoid copy if macroblock skipped in last frame too */
2123 /* skip only during decoding as we might trash the buffers during encoding a bit */
2124 if(!s->encoding){
2125 uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
2126
2127 if (s->mb_skipped) {
2128 s->mb_skipped= 0;
2129 assert(s->pict_type!=AV_PICTURE_TYPE_I);
2130 *mbskip_ptr = 1;
2131 } else if(!s->current_picture.reference) {
2132 *mbskip_ptr = 1;
2133 } else{
2134 *mbskip_ptr = 0; /* not skipped */
2135 }
2136 }
2137
2138 dct_linesize = linesize << s->interlaced_dct;
2139 dct_offset = s->interlaced_dct ? linesize : linesize * block_size;
2140
2141 if(readable){
2142 dest_y= s->dest[0];
2143 dest_cb= s->dest[1];
2144 dest_cr= s->dest[2];
2145 }else{
2146 dest_y = s->b_scratchpad;
2147 dest_cb= s->b_scratchpad+16*linesize;
2148 dest_cr= s->b_scratchpad+32*linesize;
2149 }
2150
2151 if (!s->mb_intra) {
2152 /* motion handling */
2153 /* decoding or more than one mb_type (MC was already done otherwise) */
2154 if(!s->encoding){
2155
2156 if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
2157 if (s->mv_dir & MV_DIR_FORWARD) {
2158 ff_thread_await_progress(&s->last_picture_ptr->tf,
2159 ff_MPV_lowest_referenced_row(s, 0),
2160 0);
2161 }
2162 if (s->mv_dir & MV_DIR_BACKWARD) {
2163 ff_thread_await_progress(&s->next_picture_ptr->tf,
2164 ff_MPV_lowest_referenced_row(s, 1),
2165 0);
2166 }
2167 }
2168
2169 op_qpix= s->me.qpel_put;
2170 if ((!s->no_rounding) || s->pict_type==AV_PICTURE_TYPE_B){
2171 op_pix = s->hdsp.put_pixels_tab;
2172 }else{
2173 op_pix = s->hdsp.put_no_rnd_pixels_tab;
2174 }
2175 if (s->mv_dir & MV_DIR_FORWARD) {
2176 ff_MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f.data, op_pix, op_qpix);
2177 op_pix = s->hdsp.avg_pixels_tab;
2178 op_qpix= s->me.qpel_avg;
2179 }
2180 if (s->mv_dir & MV_DIR_BACKWARD) {
2181 ff_MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f.data, op_pix, op_qpix);
2182 }
2183 }
2184
2185 /* skip dequant / idct if we are really late ;) */
2186 if(s->avctx->skip_idct){
2187 if( (s->avctx->skip_idct >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B)
2188 ||(s->avctx->skip_idct >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I)
2189 || s->avctx->skip_idct >= AVDISCARD_ALL)
2190 goto skip_idct;
2191 }
2192
2193 /* add dct residue */
2194 if(s->encoding || !( s->msmpeg4_version || s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO
2195 || (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){
2196 add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2197 add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2198 add_dequant_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2199 add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2200
2201 if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2202 if (s->chroma_y_shift){
2203 add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2204 add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2205 }else{
2206 dct_linesize >>= 1;
2207 dct_offset >>=1;
2208 add_dequant_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2209 add_dequant_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2210 add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2211 add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2212 }
2213 }
2214 } else if(is_mpeg12 || (s->codec_id != AV_CODEC_ID_WMV2)){
2215 add_dct(s, block[0], 0, dest_y , dct_linesize);
2216 add_dct(s, block[1], 1, dest_y + block_size, dct_linesize);
2217 add_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize);
2218 add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
2219
2220 if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2221 if(s->chroma_y_shift){//Chroma420
2222 add_dct(s, block[4], 4, dest_cb, uvlinesize);
2223 add_dct(s, block[5], 5, dest_cr, uvlinesize);
2224 }else{
2225 //chroma422
2226 dct_linesize = uvlinesize << s->interlaced_dct;
2227 dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize * 8;
2228
2229 add_dct(s, block[4], 4, dest_cb, dct_linesize);
2230 add_dct(s, block[5], 5, dest_cr, dct_linesize);
2231 add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
2232 add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
2233 if(!s->chroma_x_shift){//Chroma444
2234 add_dct(s, block[8], 8, dest_cb+8, dct_linesize);
2235 add_dct(s, block[9], 9, dest_cr+8, dct_linesize);
2236 add_dct(s, block[10], 10, dest_cb+8+dct_offset, dct_linesize);
2237 add_dct(s, block[11], 11, dest_cr+8+dct_offset, dct_linesize);
2238 }
2239 }
2240 }//fi gray
2241 }
2242 else if (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) {
2243 ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
2244 }
2245 } else {
2246 /* dct only in intra block */
2247 if(s->encoding || !(s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO)){
2248 put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2249 put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2250 put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2251 put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2252
2253 if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2254 if(s->chroma_y_shift){
2255 put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2256 put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2257 }else{
2258 dct_offset >>=1;
2259 dct_linesize >>=1;
2260 put_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2261 put_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2262 put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2263 put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2264 }
2265 }
2266 }else{
2267 s->dsp.idct_put(dest_y , dct_linesize, block[0]);
2268 s->dsp.idct_put(dest_y + block_size, dct_linesize, block[1]);
2269 s->dsp.idct_put(dest_y + dct_offset , dct_linesize, block[2]);
2270 s->dsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
2271
2272 if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2273 if(s->chroma_y_shift){
2274 s->dsp.idct_put(dest_cb, uvlinesize, block[4]);
2275 s->dsp.idct_put(dest_cr, uvlinesize, block[5]);
2276 }else{
2277
2278 dct_linesize = uvlinesize << s->interlaced_dct;
2279 dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize * 8;
2280
2281 s->dsp.idct_put(dest_cb, dct_linesize, block[4]);
2282 s->dsp.idct_put(dest_cr, dct_linesize, block[5]);
2283 s->dsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
2284 s->dsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
2285 if(!s->chroma_x_shift){//Chroma444
2286 s->dsp.idct_put(dest_cb + 8, dct_linesize, block[8]);
2287 s->dsp.idct_put(dest_cr + 8, dct_linesize, block[9]);
2288 s->dsp.idct_put(dest_cb + 8 + dct_offset, dct_linesize, block[10]);
2289 s->dsp.idct_put(dest_cr + 8 + dct_offset, dct_linesize, block[11]);
2290 }
2291 }
2292 }//gray
2293 }
2294 }
2295 skip_idct:
2296 if(!readable){
2297 s->hdsp.put_pixels_tab[0][0](s->dest[0], dest_y , linesize,16);
2298 s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
2299 s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
2300 }
2301 }
2302 }
2303
2304 void ff_MPV_decode_mb(MpegEncContext *s, int16_t block[12][64]){
2305 #if !CONFIG_SMALL
2306 if(s->out_format == FMT_MPEG1) {
2307 MPV_decode_mb_internal(s, block, 1);
2308 } else
2309 #endif
2310 MPV_decode_mb_internal(s, block, 0);
2311 }
2312
2313 /**
2314 * @param h is the normal height, this will be reduced automatically if needed for the last row
2315 */
2316 void ff_draw_horiz_band(AVCodecContext *avctx,
2317 AVFrame *cur, AVFrame *last,
2318 int y, int h, int picture_structure,
2319 int first_field, int low_delay)
2320 {
2321 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
2322 int vshift = desc->log2_chroma_h;
2323 const int field_pic = picture_structure != PICT_FRAME;
2324 if(field_pic){
2325 h <<= 1;
2326 y <<= 1;
2327 }
2328
2329 h = FFMIN(h, avctx->height - y);
2330
2331 if(field_pic && first_field && !(avctx->slice_flags&SLICE_FLAG_ALLOW_FIELD)) return;
2332
2333 if (avctx->draw_horiz_band) {
2334 AVFrame *src;
2335 int offset[AV_NUM_DATA_POINTERS];
2336 int i;
2337
2338 if (cur->pict_type == AV_PICTURE_TYPE_B || low_delay ||
2339 (avctx->slice_flags & SLICE_FLAG_CODED_ORDER))
2340 src = cur;
2341 else if (last)
2342 src = last;
2343 else
2344 return;
2345
2346 if (cur->pict_type == AV_PICTURE_TYPE_B &&
2347 picture_structure == PICT_FRAME &&
2348 avctx->codec_id != AV_CODEC_ID_SVQ3) {
2349 for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
2350 offset[i] = 0;
2351 }else{
2352 offset[0]= y * src->linesize[0];
2353 offset[1]=
2354 offset[2]= (y >> vshift) * src->linesize[1];
2355 for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
2356 offset[i] = 0;
2357 }
2358
2359 emms_c();
2360
2361 avctx->draw_horiz_band(avctx, src, offset,
2362 y, picture_structure, h);
2363 }
2364 }
2365
2366 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
2367 {
2368 ff_draw_horiz_band(s->avctx, &s->current_picture.f,
2369 &s->last_picture.f, y, h, s->picture_structure,
2370 s->first_field, s->low_delay);
2371 }
2372
2373 void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
2374 const int linesize = s->current_picture.f.linesize[0]; //not s->linesize as this would be wrong for field pics
2375 const int uvlinesize = s->current_picture.f.linesize[1];
2376 const int mb_size= 4;
2377
2378 s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2;
2379 s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2;
2380 s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
2381 s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
2382 s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
2383 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;
2384 //block_index is not used by mpeg2, so it is not affected by chroma_format
2385
2386 s->dest[0] = s->current_picture.f.data[0] + ((s->mb_x - 1) << mb_size);
2387 s->dest[1] = s->current_picture.f.data[1] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
2388 s->dest[2] = s->current_picture.f.data[2] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
2389
2390 if(!(s->pict_type==AV_PICTURE_TYPE_B && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME))
2391 {
2392 if(s->picture_structure==PICT_FRAME){
2393 s->dest[0] += s->mb_y * linesize << mb_size;
2394 s->dest[1] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
2395 s->dest[2] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
2396 }else{
2397 s->dest[0] += (s->mb_y>>1) * linesize << mb_size;
2398 s->dest[1] += (s->mb_y>>1) * uvlinesize << (mb_size - s->chroma_y_shift);
2399 s->dest[2] += (s->mb_y>>1) * uvlinesize << (mb_size - s->chroma_y_shift);
2400 assert((s->mb_y&1) == (s->picture_structure == PICT_BOTTOM_FIELD));
2401 }
2402 }
2403 }
2404
2405 /**
2406 * Permute an 8x8 block.
2407 * @param block the block which will be permuted according to the given permutation vector
2408 * @param permutation the permutation vector
2409 * @param last the last non zero coefficient in scantable order, used to speed the permutation up
2410 * @param scantable the used scantable, this is only used to speed the permutation up, the block is not
2411 * (inverse) permutated to scantable order!
2412 */
2413 void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last)
2414 {
2415 int i;
2416 int16_t temp[64];
2417
2418 if(last<=0) return;
2419 //if(permutation[1]==1) return; //FIXME it is ok but not clean and might fail for some permutations
2420
2421 for(i=0; i<=last; i++){
2422 const int j= scantable[i];
2423 temp[j]= block[j];
2424 block[j]=0;
2425 }
2426
2427 for(i=0; i<=last; i++){
2428 const int j= scantable[i];
2429 const int perm_j= permutation[j];
2430 block[perm_j]= temp[j];
2431 }
2432 }
2433
2434 void ff_mpeg_flush(AVCodecContext *avctx){
2435 int i;
2436 MpegEncContext *s = avctx->priv_data;
2437
2438 if(s==NULL || s->picture==NULL)
2439 return;
2440
2441 for (i = 0; i < MAX_PICTURE_COUNT; i++)
2442 ff_mpeg_unref_picture(s, &s->picture[i]);
2443 s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
2444
2445 ff_mpeg_unref_picture(s, &s->current_picture);
2446 ff_mpeg_unref_picture(s, &s->last_picture);
2447 ff_mpeg_unref_picture(s, &s->next_picture);
2448
2449 s->mb_x= s->mb_y= 0;
2450
2451 s->parse_context.state= -1;
2452 s->parse_context.frame_start_found= 0;
2453 s->parse_context.overread= 0;
2454 s->parse_context.overread_index= 0;
2455 s->parse_context.index= 0;
2456 s->parse_context.last_index= 0;
2457 s->bitstream_buffer_size=0;
2458 s->pp_time=0;
2459 }
2460
2461 /**
2462 * set qscale and update qscale dependent variables.
2463 */
2464 void ff_set_qscale(MpegEncContext * s, int qscale)
2465 {
2466 if (qscale < 1)
2467 qscale = 1;
2468 else if (qscale > 31)
2469 qscale = 31;
2470
2471 s->qscale = qscale;
2472 s->chroma_qscale= s->chroma_qscale_table[qscale];
2473
2474 s->y_dc_scale= s->y_dc_scale_table[ qscale ];
2475 s->c_dc_scale= s->c_dc_scale_table[ s->chroma_qscale ];
2476 }
2477
2478 void ff_MPV_report_decode_progress(MpegEncContext *s)
2479 {
2480 if (s->pict_type != AV_PICTURE_TYPE_B && !s->partitioned_frame && !s->er.error_occurred)
2481 ff_thread_report_progress(&s->current_picture_ptr->tf, s->mb_y, 0);
2482 }
2483
2484 #if CONFIG_ERROR_RESILIENCE
2485 void ff_mpeg_er_frame_start(MpegEncContext *s)
2486 {
2487 ERContext *er = &s->er;
2488
2489 er->cur_pic = s->current_picture_ptr;
2490 er->last_pic = s->last_picture_ptr;
2491 er->next_pic = s->next_picture_ptr;
2492
2493 er->pp_time = s->pp_time;
2494 er->pb_time = s->pb_time;
2495 er->quarter_sample = s->quarter_sample;
2496 er->partitioned_frame = s->partitioned_frame;
2497
2498 ff_er_frame_start(er);
2499 }
2500 #endif /* CONFIG_ERROR_RESILIENCE */
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