moved matrix init away from MPV_common_init()
[libav.git] / libavcodec / mpegvideo.c
1 /*
2 * The simplest mpeg encoder (well, it was the simplest!)
3 * Copyright (c) 2000,2001 Gerard Lantau.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19 #include <stdlib.h>
20 #include <stdio.h>
21 #include <math.h>
22 #include <string.h>
23 #include "avcodec.h"
24 #include "dsputil.h"
25 #include "mpegvideo.h"
26
27 #ifdef USE_FASTMEMCPY
28 #include "fastmemcpy.h"
29 #endif
30
31 static void encode_picture(MpegEncContext *s, int picture_number);
32 static void rate_control_init(MpegEncContext *s);
33 static int rate_estimate_qscale(MpegEncContext *s);
34 static void dct_unquantize_mpeg1_c(MpegEncContext *s,
35 DCTELEM *block, int n, int qscale);
36 static void dct_unquantize_h263_c(MpegEncContext *s,
37 DCTELEM *block, int n, int qscale);
38 static int dct_quantize(MpegEncContext *s, DCTELEM *block, int n, int qscale);
39 static int dct_quantize_mmx(MpegEncContext *s,
40 DCTELEM *block, int n,
41 int qscale);
42 #define EDGE_WIDTH 16
43
44 /* enable all paranoid tests for rounding, overflows, etc... */
45 //#define PARANOID
46
47 //#define DEBUG
48
49 /* for jpeg fast DCT */
50 #define CONST_BITS 14
51
52 static const unsigned short aanscales[64] = {
53 /* precomputed values scaled up by 14 bits */
54 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
55 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270,
56 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906,
57 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315,
58 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
59 12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552,
60 8867, 12299, 11585, 10426, 8867, 6967, 4799, 2446,
61 4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247
62 };
63
64 static UINT8 h263_chroma_roundtab[16] = {
65 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
66 };
67
68 /* default motion estimation */
69 int motion_estimation_method = ME_LOG;
70
71 /* XXX: should use variable shift ? */
72 #define QMAT_SHIFT_MMX 19
73 #define QMAT_SHIFT 25
74
75 static void convert_matrix(int *qmat, const UINT16 *quant_matrix, int qscale)
76 {
77 int i;
78
79 if (av_fdct == jpeg_fdct_ifast) {
80 for(i=0;i<64;i++) {
81 /* 16 <= qscale * quant_matrix[i] <= 7905 */
82 /* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026 */
83
84 qmat[i] = (int)((1ULL << (QMAT_SHIFT + 11)) / (aanscales[i] * qscale * quant_matrix[i]));
85 }
86 } else {
87 for(i=0;i<64;i++) {
88 /* We can safely suppose that 16 <= quant_matrix[i] <= 255
89 So 16 <= qscale * quant_matrix[i] <= 7905
90 so (1 << QMAT_SHIFT) / 16 >= qmat[i] >= (1 << QMAT_SHIFT) / 7905
91 */
92 qmat[i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
93 }
94 }
95 }
96
97 /* init common structure for both encoder and decoder */
98 int MPV_common_init(MpegEncContext *s)
99 {
100 int c_size, i;
101 UINT8 *pict;
102
103 if (s->out_format == FMT_H263)
104 s->dct_unquantize = dct_unquantize_h263_c;
105 else
106 s->dct_unquantize = dct_unquantize_mpeg1_c;
107
108 #ifdef HAVE_MMX
109 MPV_common_init_mmx(s);
110 #endif
111 s->mb_width = (s->width + 15) / 16;
112 s->mb_height = (s->height + 15) / 16;
113 s->linesize = s->mb_width * 16 + 2 * EDGE_WIDTH;
114
115 for(i=0;i<3;i++) {
116 int w, h, shift, pict_start;
117
118 w = s->linesize;
119 h = s->mb_height * 16 + 2 * EDGE_WIDTH;
120 shift = (i == 0) ? 0 : 1;
121 c_size = (w >> shift) * (h >> shift);
122 pict_start = (w >> shift) * (EDGE_WIDTH >> shift) + (EDGE_WIDTH >> shift);
123
124 pict = av_mallocz(c_size);
125 if (pict == NULL)
126 goto fail;
127 s->last_picture_base[i] = pict;
128 s->last_picture[i] = pict + pict_start;
129
130 pict = av_mallocz(c_size);
131 if (pict == NULL)
132 goto fail;
133 s->next_picture_base[i] = pict;
134 s->next_picture[i] = pict + pict_start;
135
136 if (s->has_b_frames) {
137 pict = av_mallocz(c_size);
138 if (pict == NULL)
139 goto fail;
140 s->aux_picture_base[i] = pict;
141 s->aux_picture[i] = pict + pict_start;
142 }
143 }
144
145 if (s->out_format == FMT_H263) {
146 int size;
147 /* MV prediction */
148 size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
149 s->motion_val = malloc(size * 2 * sizeof(INT16));
150 if (s->motion_val == NULL)
151 goto fail;
152 memset(s->motion_val, 0, size * 2 * sizeof(INT16));
153 }
154
155 if (s->h263_pred) {
156 int y_size, c_size, i, size;
157
158 /* dc values */
159
160 y_size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
161 c_size = (s->mb_width + 2) * (s->mb_height + 2);
162 size = y_size + 2 * c_size;
163 s->dc_val[0] = malloc(size * sizeof(INT16));
164 if (s->dc_val[0] == NULL)
165 goto fail;
166 s->dc_val[1] = s->dc_val[0] + y_size;
167 s->dc_val[2] = s->dc_val[1] + c_size;
168 for(i=0;i<size;i++)
169 s->dc_val[0][i] = 1024;
170
171 /* ac values */
172 s->ac_val[0] = av_mallocz(size * sizeof(INT16) * 16);
173 if (s->ac_val[0] == NULL)
174 goto fail;
175 s->ac_val[1] = s->ac_val[0] + y_size;
176 s->ac_val[2] = s->ac_val[1] + c_size;
177
178 /* cbp values */
179 s->coded_block = av_mallocz(y_size);
180 if (!s->coded_block)
181 goto fail;
182 }
183 /* default structure is frame */
184 s->picture_structure = PICT_FRAME;
185
186 /* init macroblock skip table */
187 if (!s->encoding) {
188 s->mbskip_table = av_mallocz(s->mb_width * s->mb_height);
189 if (!s->mbskip_table)
190 goto fail;
191 }
192
193 s->context_initialized = 1;
194 return 0;
195 fail:
196 if (s->motion_val)
197 free(s->motion_val);
198 if (s->dc_val[0])
199 free(s->dc_val[0]);
200 if (s->ac_val[0])
201 free(s->ac_val[0]);
202 if (s->coded_block)
203 free(s->coded_block);
204 if (s->mbskip_table)
205 free(s->mbskip_table);
206 for(i=0;i<3;i++) {
207 if (s->last_picture_base[i])
208 free(s->last_picture_base[i]);
209 if (s->next_picture_base[i])
210 free(s->next_picture_base[i]);
211 if (s->aux_picture_base[i])
212 free(s->aux_picture_base[i]);
213 }
214 return -1;
215 }
216
217 /* init common structure for both encoder and decoder */
218 void MPV_common_end(MpegEncContext *s)
219 {
220 int i;
221
222 if (s->motion_val)
223 free(s->motion_val);
224 if (s->h263_pred) {
225 free(s->dc_val[0]);
226 free(s->ac_val[0]);
227 free(s->coded_block);
228 }
229 if (s->mbskip_table)
230 free(s->mbskip_table);
231 for(i=0;i<3;i++) {
232 free(s->last_picture_base[i]);
233 free(s->next_picture_base[i]);
234 if (s->has_b_frames)
235 free(s->aux_picture_base[i]);
236 }
237 s->context_initialized = 0;
238 }
239
240 /* init video encoder */
241 int MPV_encode_init(AVCodecContext *avctx)
242 {
243 MpegEncContext *s = avctx->priv_data;
244 int i;
245
246 s->bit_rate = avctx->bit_rate;
247 s->frame_rate = avctx->frame_rate;
248 s->width = avctx->width;
249 s->height = avctx->height;
250 s->gop_size = avctx->gop_size;
251 if (s->gop_size <= 1) {
252 s->intra_only = 1;
253 s->gop_size = 12;
254 } else {
255 s->intra_only = 0;
256 }
257 s->full_search = motion_estimation_method;
258
259 s->fixed_qscale = (avctx->flags & CODEC_FLAG_QSCALE);
260
261 switch(avctx->codec->id) {
262 case CODEC_ID_MPEG1VIDEO:
263 s->out_format = FMT_MPEG1;
264 break;
265 case CODEC_ID_MJPEG:
266 s->out_format = FMT_MJPEG;
267 s->intra_only = 1; /* force intra only for jpeg */
268 if (mjpeg_init(s) < 0)
269 return -1;
270 break;
271 case CODEC_ID_H263:
272 if (h263_get_picture_format(s->width, s->height) == 7)
273 return -1;
274 s->out_format = FMT_H263;
275 break;
276 case CODEC_ID_H263P:
277 s->out_format = FMT_H263;
278 s->h263_plus = 1;
279 /* XXX: not unrectricted mv yet */
280 break;
281 case CODEC_ID_RV10:
282 s->out_format = FMT_H263;
283 s->h263_rv10 = 1;
284 break;
285 case CODEC_ID_OPENDIVX:
286 s->out_format = FMT_H263;
287 s->h263_pred = 1;
288 s->unrestricted_mv = 1;
289 break;
290 case CODEC_ID_MSMPEG4:
291 s->out_format = FMT_H263;
292 s->h263_msmpeg4 = 1;
293 s->h263_pred = 1;
294 s->unrestricted_mv = 1;
295 break;
296 default:
297 return -1;
298 }
299
300 if (s->out_format == FMT_H263)
301 h263_encode_init_vlc(s);
302
303 s->encoding = 1;
304
305 /* init */
306 if (MPV_common_init(s) < 0)
307 return -1;
308
309 /* init default q matrix */
310 for(i=0;i<64;i++) {
311 s->intra_matrix[i] = default_intra_matrix[i];
312 s->non_intra_matrix[i] = default_non_intra_matrix[i];
313 }
314
315 /* rate control init */
316 rate_control_init(s);
317
318 s->picture_number = 0;
319 s->fake_picture_number = 0;
320 /* motion detector init */
321 s->f_code = 1;
322
323 return 0;
324 }
325
326 int MPV_encode_end(AVCodecContext *avctx)
327 {
328 MpegEncContext *s = avctx->priv_data;
329
330 #ifdef STATS
331 print_stats();
332 #endif
333 MPV_common_end(s);
334 if (s->out_format == FMT_MJPEG)
335 mjpeg_close(s);
336 return 0;
337 }
338
339 /* draw the edges of width 'w' of an image of size width, height */
340 static void draw_edges(UINT8 *buf, int wrap, int width, int height, int w)
341 {
342 UINT8 *ptr, *last_line;
343 int i;
344
345 last_line = buf + (height - 1) * wrap;
346 for(i=0;i<w;i++) {
347 /* top and bottom */
348 memcpy(buf - (i + 1) * wrap, buf, width);
349 memcpy(last_line + (i + 1) * wrap, last_line, width);
350 }
351 /* left and right */
352 ptr = buf;
353 for(i=0;i<height;i++) {
354 memset(ptr - w, ptr[0], w);
355 memset(ptr + width, ptr[width-1], w);
356 ptr += wrap;
357 }
358 /* corners */
359 for(i=0;i<w;i++) {
360 memset(buf - (i + 1) * wrap - w, buf[0], w); /* top left */
361 memset(buf - (i + 1) * wrap + width, buf[width-1], w); /* top right */
362 memset(last_line + (i + 1) * wrap - w, last_line[0], w); /* top left */
363 memset(last_line + (i + 1) * wrap + width, last_line[width-1], w); /* top right */
364 }
365 }
366
367 /* generic function for encode/decode called before a frame is coded/decoded */
368 void MPV_frame_start(MpegEncContext *s)
369 {
370 int i;
371 UINT8 *tmp;
372
373 s->mb_skiped = 0;
374 if (s->pict_type == B_TYPE) {
375 for(i=0;i<3;i++) {
376 s->current_picture[i] = s->aux_picture[i];
377 }
378 } else {
379 for(i=0;i<3;i++) {
380 /* swap next and last */
381 tmp = s->last_picture[i];
382 s->last_picture[i] = s->next_picture[i];
383 s->next_picture[i] = tmp;
384 s->current_picture[i] = tmp;
385 }
386 }
387 }
388
389 /* generic function for encode/decode called after a frame has been coded/decoded */
390 void MPV_frame_end(MpegEncContext *s)
391 {
392 /* draw edge for correct motion prediction if outside */
393 if (s->pict_type != B_TYPE) {
394 draw_edges(s->current_picture[0], s->linesize, s->width, s->height, EDGE_WIDTH);
395 draw_edges(s->current_picture[1], s->linesize/2, s->width/2, s->height/2, EDGE_WIDTH/2);
396 draw_edges(s->current_picture[2], s->linesize/2, s->width/2, s->height/2, EDGE_WIDTH/2);
397 }
398 }
399
400 int MPV_encode_picture(AVCodecContext *avctx,
401 unsigned char *buf, int buf_size, void *data)
402 {
403 MpegEncContext *s = avctx->priv_data;
404 AVPicture *pict = data;
405 int i, j;
406
407 if (s->fixed_qscale)
408 s->qscale = avctx->quality;
409
410 init_put_bits(&s->pb, buf, buf_size, NULL, NULL);
411
412 if (!s->intra_only) {
413 /* first picture of GOP is intra */
414 if ((s->picture_number % s->gop_size) == 0)
415 s->pict_type = I_TYPE;
416 else
417 s->pict_type = P_TYPE;
418 } else {
419 s->pict_type = I_TYPE;
420 }
421 avctx->key_frame = (s->pict_type == I_TYPE);
422
423 MPV_frame_start(s);
424
425 for(i=0;i<3;i++) {
426 UINT8 *src = pict->data[i];
427 UINT8 *dest = s->current_picture[i];
428 int src_wrap = pict->linesize[i];
429 int dest_wrap = s->linesize;
430 int w = s->width;
431 int h = s->height;
432
433 if (i >= 1) {
434 dest_wrap >>= 1;
435 w >>= 1;
436 h >>= 1;
437 }
438
439 for(j=0;j<h;j++) {
440 memcpy(dest, src, w);
441 dest += dest_wrap;
442 src += src_wrap;
443 }
444 s->new_picture[i] = s->current_picture[i];
445 }
446
447 encode_picture(s, s->picture_number);
448
449 MPV_frame_end(s);
450 s->picture_number++;
451
452 if (s->out_format == FMT_MJPEG)
453 mjpeg_picture_trailer(s);
454
455 flush_put_bits(&s->pb);
456 s->total_bits += (s->pb.buf_ptr - s->pb.buf) * 8;
457 avctx->quality = s->qscale;
458 return s->pb.buf_ptr - s->pb.buf;
459 }
460
461 static inline int clip(int a, int amin, int amax)
462 {
463 if (a < amin)
464 return amin;
465 else if (a > amax)
466 return amax;
467 else
468 return a;
469 }
470
471 /* apply one mpeg motion vector to the three components */
472 static inline void mpeg_motion(MpegEncContext *s,
473 UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
474 int dest_offset,
475 UINT8 **ref_picture, int src_offset,
476 int field_based, op_pixels_func *pix_op,
477 int motion_x, int motion_y, int h)
478 {
479 UINT8 *ptr;
480 int dxy, offset, mx, my, src_x, src_y, height, linesize;
481
482 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
483 src_x = s->mb_x * 16 + (motion_x >> 1);
484 src_y = s->mb_y * (16 >> field_based) + (motion_y >> 1);
485
486 /* WARNING: do no forget half pels */
487 height = s->height >> field_based;
488 src_x = clip(src_x, -16, s->width);
489 if (src_x == s->width)
490 dxy &= ~1;
491 src_y = clip(src_y, -16, height);
492 if (src_y == height)
493 dxy &= ~2;
494 linesize = s->linesize << field_based;
495 ptr = ref_picture[0] + (src_y * linesize) + (src_x) + src_offset;
496 dest_y += dest_offset;
497 pix_op[dxy](dest_y, ptr, linesize, h);
498 pix_op[dxy](dest_y + 8, ptr + 8, linesize, h);
499
500 if (s->out_format == FMT_H263) {
501 dxy = 0;
502 if ((motion_x & 3) != 0)
503 dxy |= 1;
504 if ((motion_y & 3) != 0)
505 dxy |= 2;
506 mx = motion_x >> 2;
507 my = motion_y >> 2;
508 } else {
509 mx = motion_x / 2;
510 my = motion_y / 2;
511 dxy = ((my & 1) << 1) | (mx & 1);
512 mx >>= 1;
513 my >>= 1;
514 }
515
516 src_x = s->mb_x * 8 + mx;
517 src_y = s->mb_y * (8 >> field_based) + my;
518 src_x = clip(src_x, -8, s->width >> 1);
519 if (src_x == (s->width >> 1))
520 dxy &= ~1;
521 src_y = clip(src_y, -8, height >> 1);
522 if (src_y == (height >> 1))
523 dxy &= ~2;
524
525 offset = (src_y * (linesize >> 1)) + src_x + (src_offset >> 1);
526 ptr = ref_picture[1] + offset;
527 pix_op[dxy](dest_cb + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
528 ptr = ref_picture[2] + offset;
529 pix_op[dxy](dest_cr + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
530 }
531
532 static inline void MPV_motion(MpegEncContext *s,
533 UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
534 int dir, UINT8 **ref_picture,
535 op_pixels_func *pix_op)
536 {
537 int dxy, offset, mx, my, src_x, src_y, motion_x, motion_y;
538 int mb_x, mb_y, i;
539 UINT8 *ptr, *dest;
540
541 mb_x = s->mb_x;
542 mb_y = s->mb_y;
543
544 switch(s->mv_type) {
545 case MV_TYPE_16X16:
546 mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
547 ref_picture, 0,
548 0, pix_op,
549 s->mv[dir][0][0], s->mv[dir][0][1], 16);
550 break;
551 case MV_TYPE_8X8:
552 for(i=0;i<4;i++) {
553 motion_x = s->mv[dir][i][0];
554 motion_y = s->mv[dir][i][1];
555
556 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
557 src_x = mb_x * 16 + (motion_x >> 1) + (i & 1) * 8;
558 src_y = mb_y * 16 + (motion_y >> 1) + ((i >> 1) & 1) * 8;
559
560 /* WARNING: do no forget half pels */
561 src_x = clip(src_x, -16, s->width);
562 if (src_x == s->width)
563 dxy &= ~1;
564 src_y = clip(src_y, -16, s->height);
565 if (src_y == s->height)
566 dxy &= ~2;
567
568 ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
569 dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
570 pix_op[dxy](dest, ptr, s->linesize, 8);
571 }
572 /* In case of 8X8, we construct a single chroma motion vector
573 with a special rounding */
574 mx = 0;
575 my = 0;
576 for(i=0;i<4;i++) {
577 mx += s->mv[dir][i][0];
578 my += s->mv[dir][i][1];
579 }
580 if (mx >= 0)
581 mx = (h263_chroma_roundtab[mx & 0xf] + ((mx >> 3) & ~1));
582 else {
583 mx = -mx;
584 mx = -(h263_chroma_roundtab[mx & 0xf] + ((mx >> 3) & ~1));
585 }
586 if (my >= 0)
587 my = (h263_chroma_roundtab[my & 0xf] + ((my >> 3) & ~1));
588 else {
589 my = -my;
590 my = -(h263_chroma_roundtab[my & 0xf] + ((my >> 3) & ~1));
591 }
592 dxy = ((my & 1) << 1) | (mx & 1);
593 mx >>= 1;
594 my >>= 1;
595
596 src_x = mb_x * 8 + mx;
597 src_y = mb_y * 8 + my;
598 src_x = clip(src_x, -8, s->width/2);
599 if (src_x == s->width/2)
600 dxy &= ~1;
601 src_y = clip(src_y, -8, s->height/2);
602 if (src_y == s->height/2)
603 dxy &= ~2;
604
605 offset = (src_y * (s->linesize >> 1)) + src_x;
606 ptr = ref_picture[1] + offset;
607 pix_op[dxy](dest_cb, ptr, s->linesize >> 1, 8);
608 ptr = ref_picture[2] + offset;
609 pix_op[dxy](dest_cr, ptr, s->linesize >> 1, 8);
610 break;
611 case MV_TYPE_FIELD:
612 if (s->picture_structure == PICT_FRAME) {
613 /* top field */
614 mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
615 ref_picture, s->field_select[dir][0] ? s->linesize : 0,
616 1, pix_op,
617 s->mv[dir][0][0], s->mv[dir][0][1], 8);
618 /* bottom field */
619 mpeg_motion(s, dest_y, dest_cb, dest_cr, s->linesize,
620 ref_picture, s->field_select[dir][1] ? s->linesize : 0,
621 1, pix_op,
622 s->mv[dir][1][0], s->mv[dir][1][1], 8);
623 } else {
624
625
626 }
627 break;
628 }
629 }
630
631
632 /* put block[] to dest[] */
633 static inline void put_dct(MpegEncContext *s,
634 DCTELEM *block, int i, UINT8 *dest, int line_size)
635 {
636 if (!s->mpeg2)
637 s->dct_unquantize(s, block, i, s->qscale);
638 ff_idct (block);
639 put_pixels_clamped(block, dest, line_size);
640 }
641
642 /* add block[] to dest[] */
643 static inline void add_dct(MpegEncContext *s,
644 DCTELEM *block, int i, UINT8 *dest, int line_size)
645 {
646 if (s->block_last_index[i] >= 0) {
647 if (!s->mpeg2)
648 s->dct_unquantize(s, block, i, s->qscale);
649 ff_idct (block);
650 add_pixels_clamped(block, dest, line_size);
651 }
652 }
653
654 /* generic function called after a macroblock has been parsed by the
655 decoder or after it has been encoded by the encoder.
656
657 Important variables used:
658 s->mb_intra : true if intra macroblock
659 s->mv_dir : motion vector direction
660 s->mv_type : motion vector type
661 s->mv : motion vector
662 s->interlaced_dct : true if interlaced dct used (mpeg2)
663 */
664 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
665 {
666 int mb_x, mb_y, motion_x, motion_y;
667 int dct_linesize, dct_offset;
668 op_pixels_func *op_pix;
669
670 mb_x = s->mb_x;
671 mb_y = s->mb_y;
672
673 /* update DC predictors for P macroblocks */
674 if (!s->mb_intra) {
675 if (s->h263_pred) {
676 int wrap, x, y, v;
677 wrap = 2 * s->mb_width + 2;
678 v = 1024;
679 x = 2 * mb_x + 1;
680 y = 2 * mb_y + 1;
681 s->dc_val[0][(x) + (y) * wrap] = v;
682 s->dc_val[0][(x + 1) + (y) * wrap] = v;
683 s->dc_val[0][(x) + (y + 1) * wrap] = v;
684 s->dc_val[0][(x + 1) + (y + 1) * wrap] = v;
685 /* ac pred */
686 memset(s->ac_val[0][(x) + (y) * wrap], 0, 16 * sizeof(INT16));
687 memset(s->ac_val[0][(x + 1) + (y) * wrap], 0, 16 * sizeof(INT16));
688 memset(s->ac_val[0][(x) + (y + 1) * wrap], 0, 16 * sizeof(INT16));
689 memset(s->ac_val[0][(x + 1) + (y + 1) * wrap], 0, 16 * sizeof(INT16));
690 if (s->h263_msmpeg4) {
691 s->coded_block[(x) + (y) * wrap] = 0;
692 s->coded_block[(x + 1) + (y) * wrap] = 0;
693 s->coded_block[(x) + (y + 1) * wrap] = 0;
694 s->coded_block[(x + 1) + (y + 1) * wrap] = 0;
695 }
696 /* chroma */
697 wrap = s->mb_width + 2;
698 x = mb_x + 1;
699 y = mb_y + 1;
700 s->dc_val[1][(x) + (y) * wrap] = v;
701 s->dc_val[2][(x) + (y) * wrap] = v;
702 /* ac pred */
703 memset(s->ac_val[1][(x) + (y) * wrap], 0, 16 * sizeof(INT16));
704 memset(s->ac_val[2][(x) + (y) * wrap], 0, 16 * sizeof(INT16));
705 } else {
706 s->last_dc[0] = 128 << s->intra_dc_precision;
707 s->last_dc[1] = 128 << s->intra_dc_precision;
708 s->last_dc[2] = 128 << s->intra_dc_precision;
709 }
710 }
711
712 /* update motion predictor */
713 if (s->out_format == FMT_H263) {
714 int x, y, wrap;
715
716 x = 2 * mb_x + 1;
717 y = 2 * mb_y + 1;
718 wrap = 2 * s->mb_width + 2;
719 if (s->mb_intra) {
720 motion_x = 0;
721 motion_y = 0;
722 goto motion_init;
723 } else if (s->mv_type == MV_TYPE_16X16) {
724 motion_x = s->mv[0][0][0];
725 motion_y = s->mv[0][0][1];
726 motion_init:
727 /* no update if 8X8 because it has been done during parsing */
728 s->motion_val[(x) + (y) * wrap][0] = motion_x;
729 s->motion_val[(x) + (y) * wrap][1] = motion_y;
730 s->motion_val[(x + 1) + (y) * wrap][0] = motion_x;
731 s->motion_val[(x + 1) + (y) * wrap][1] = motion_y;
732 s->motion_val[(x) + (y + 1) * wrap][0] = motion_x;
733 s->motion_val[(x) + (y + 1) * wrap][1] = motion_y;
734 s->motion_val[(x + 1) + (y + 1) * wrap][0] = motion_x;
735 s->motion_val[(x + 1) + (y + 1) * wrap][1] = motion_y;
736 }
737 }
738
739 if (!s->intra_only) {
740 UINT8 *dest_y, *dest_cb, *dest_cr;
741 UINT8 *mbskip_ptr;
742
743 /* avoid copy if macroblock skipped in last frame too */
744 if (!s->encoding && s->pict_type != B_TYPE) {
745 mbskip_ptr = &s->mbskip_table[s->mb_y * s->mb_width + s->mb_x];
746 if (s->mb_skiped) {
747 s->mb_skiped = 0;
748 /* if previous was skipped too, then nothing to do ! */
749 if (*mbskip_ptr != 0)
750 goto the_end;
751 *mbskip_ptr = 1; /* indicate that this time we skiped it */
752 } else {
753 *mbskip_ptr = 0; /* not skipped */
754 }
755 }
756
757 dest_y = s->current_picture[0] + (mb_y * 16 * s->linesize) + mb_x * 16;
758 dest_cb = s->current_picture[1] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
759 dest_cr = s->current_picture[2] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
760
761 if (s->interlaced_dct) {
762 dct_linesize = s->linesize * 2;
763 dct_offset = s->linesize;
764 } else {
765 dct_linesize = s->linesize;
766 dct_offset = s->linesize * 8;
767 }
768
769 if (!s->mb_intra) {
770 /* motion handling */
771 if (!s->no_rounding)
772 op_pix = put_pixels_tab;
773 else
774 op_pix = put_no_rnd_pixels_tab;
775
776 if (s->mv_dir & MV_DIR_FORWARD) {
777 MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture, op_pix);
778 if (!s->no_rounding)
779 op_pix = avg_pixels_tab;
780 else
781 op_pix = avg_no_rnd_pixels_tab;
782 }
783 if (s->mv_dir & MV_DIR_BACKWARD) {
784 MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture, op_pix);
785 }
786
787 /* add dct residue */
788 add_dct(s, block[0], 0, dest_y, dct_linesize);
789 add_dct(s, block[1], 1, dest_y + 8, dct_linesize);
790 add_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
791 add_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
792
793 add_dct(s, block[4], 4, dest_cb, s->linesize >> 1);
794 add_dct(s, block[5], 5, dest_cr, s->linesize >> 1);
795 } else {
796 /* dct only in intra block */
797 put_dct(s, block[0], 0, dest_y, dct_linesize);
798 put_dct(s, block[1], 1, dest_y + 8, dct_linesize);
799 put_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
800 put_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
801
802 put_dct(s, block[4], 4, dest_cb, s->linesize >> 1);
803 put_dct(s, block[5], 5, dest_cr, s->linesize >> 1);
804 }
805 }
806 the_end:
807 emms_c();
808 }
809
810 static void encode_picture(MpegEncContext *s, int picture_number)
811 {
812 int mb_x, mb_y, wrap;
813 UINT8 *ptr;
814 int i, motion_x, motion_y;
815
816 s->picture_number = picture_number;
817 if (!s->fixed_qscale)
818 s->qscale = rate_estimate_qscale(s);
819
820 /* precompute matrix */
821 if (s->out_format == FMT_MJPEG) {
822 /* for mjpeg, we do include qscale in the matrix */
823 s->intra_matrix[0] = default_intra_matrix[0];
824 for(i=1;i<64;i++)
825 s->intra_matrix[i] = (default_intra_matrix[i] * s->qscale) >> 3;
826 convert_matrix(s->q_intra_matrix, s->intra_matrix, 8);
827 } else {
828 convert_matrix(s->q_intra_matrix, s->intra_matrix, s->qscale);
829 convert_matrix(s->q_non_intra_matrix, s->non_intra_matrix, s->qscale);
830 }
831
832 switch(s->out_format) {
833 case FMT_MJPEG:
834 mjpeg_picture_header(s);
835 break;
836 case FMT_H263:
837 if (s->h263_msmpeg4)
838 msmpeg4_encode_picture_header(s, picture_number);
839 else if (s->h263_pred)
840 mpeg4_encode_picture_header(s, picture_number);
841 else if (s->h263_rv10)
842 rv10_encode_picture_header(s, picture_number);
843 else
844 h263_encode_picture_header(s, picture_number);
845 break;
846 case FMT_MPEG1:
847 mpeg1_encode_picture_header(s, picture_number);
848 break;
849 }
850
851 /* init last dc values */
852 /* note: quant matrix value (8) is implied here */
853 s->last_dc[0] = 128;
854 s->last_dc[1] = 128;
855 s->last_dc[2] = 128;
856 s->mb_incr = 1;
857 s->last_mv[0][0][0] = 0;
858 s->last_mv[0][0][1] = 0;
859 s->mv_type = MV_TYPE_16X16;
860 s->mv_dir = MV_DIR_FORWARD;
861
862 for(mb_y=0; mb_y < s->mb_height; mb_y++) {
863 for(mb_x=0; mb_x < s->mb_width; mb_x++) {
864
865 s->mb_x = mb_x;
866 s->mb_y = mb_y;
867
868 /* compute motion vector and macro block type (intra or non intra) */
869 motion_x = 0;
870 motion_y = 0;
871 if (s->pict_type == P_TYPE) {
872 s->mb_intra = estimate_motion(s, mb_x, mb_y,
873 &motion_x,
874 &motion_y);
875 } else {
876 s->mb_intra = 1;
877 }
878
879 /* get the pixels */
880 wrap = s->linesize;
881 ptr = s->new_picture[0] + (mb_y * 16 * wrap) + mb_x * 16;
882 get_pixels(s->block[0], ptr, wrap);
883 get_pixels(s->block[1], ptr + 8, wrap);
884 get_pixels(s->block[2], ptr + 8 * wrap, wrap);
885 get_pixels(s->block[3], ptr + 8 * wrap + 8, wrap);
886 wrap = s->linesize >> 1;
887 ptr = s->new_picture[1] + (mb_y * 8 * wrap) + mb_x * 8;
888 get_pixels(s->block[4], ptr, wrap);
889
890 wrap = s->linesize >> 1;
891 ptr = s->new_picture[2] + (mb_y * 8 * wrap) + mb_x * 8;
892 get_pixels(s->block[5], ptr, wrap);
893
894 /* subtract previous frame if non intra */
895 if (!s->mb_intra) {
896 int dxy, offset, mx, my;
897
898 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
899 ptr = s->last_picture[0] +
900 ((mb_y * 16 + (motion_y >> 1)) * s->linesize) +
901 (mb_x * 16 + (motion_x >> 1));
902
903 sub_pixels_2(s->block[0], ptr, s->linesize, dxy);
904 sub_pixels_2(s->block[1], ptr + 8, s->linesize, dxy);
905 sub_pixels_2(s->block[2], ptr + s->linesize * 8, s->linesize, dxy);
906 sub_pixels_2(s->block[3], ptr + 8 + s->linesize * 8, s->linesize ,dxy);
907
908 if (s->out_format == FMT_H263) {
909 /* special rounding for h263 */
910 dxy = 0;
911 if ((motion_x & 3) != 0)
912 dxy |= 1;
913 if ((motion_y & 3) != 0)
914 dxy |= 2;
915 mx = motion_x >> 2;
916 my = motion_y >> 2;
917 } else {
918 mx = motion_x / 2;
919 my = motion_y / 2;
920 dxy = ((my & 1) << 1) | (mx & 1);
921 mx >>= 1;
922 my >>= 1;
923 }
924 offset = ((mb_y * 8 + my) * (s->linesize >> 1)) + (mb_x * 8 + mx);
925 ptr = s->last_picture[1] + offset;
926 sub_pixels_2(s->block[4], ptr, s->linesize >> 1, dxy);
927 ptr = s->last_picture[2] + offset;
928 sub_pixels_2(s->block[5], ptr, s->linesize >> 1, dxy);
929 }
930 emms_c();
931
932 /* DCT & quantize */
933 if (s->h263_msmpeg4) {
934 msmpeg4_dc_scale(s);
935 } else if (s->h263_pred) {
936 h263_dc_scale(s);
937 } else {
938 /* default quantization values */
939 s->y_dc_scale = 8;
940 s->c_dc_scale = 8;
941 }
942
943 for(i=0;i<6;i++) {
944 int last_index;
945 if (av_fdct == jpeg_fdct_ifast)
946 last_index = dct_quantize(s, s->block[i], i, s->qscale);
947 else
948 last_index = dct_quantize_mmx(s, s->block[i], i, s->qscale);
949 s->block_last_index[i] = last_index;
950 }
951
952 /* huffman encode */
953 switch(s->out_format) {
954 case FMT_MPEG1:
955 mpeg1_encode_mb(s, s->block, motion_x, motion_y);
956 break;
957 case FMT_H263:
958 if (s->h263_msmpeg4)
959 msmpeg4_encode_mb(s, s->block, motion_x, motion_y);
960 else
961 h263_encode_mb(s, s->block, motion_x, motion_y);
962 break;
963 case FMT_MJPEG:
964 mjpeg_encode_mb(s, s->block);
965 break;
966 }
967
968 /* decompress blocks so that we keep the state of the decoder */
969 s->mv[0][0][0] = motion_x;
970 s->mv[0][0][1] = motion_y;
971
972 MPV_decode_mb(s, s->block);
973 }
974 }
975 }
976
977 static int dct_quantize(MpegEncContext *s,
978 DCTELEM *block, int n,
979 int qscale)
980 {
981 int i, j, level, last_non_zero, q;
982 const int *qmat;
983
984 av_fdct (block);
985
986 if (s->mb_intra) {
987 if (n < 4)
988 q = s->y_dc_scale;
989 else
990 q = s->c_dc_scale;
991 q = q << 3;
992
993 /* note: block[0] is assumed to be positive */
994 block[0] = (block[0] + (q >> 1)) / q;
995 i = 1;
996 last_non_zero = 0;
997 if (s->out_format == FMT_H263) {
998 qmat = s->q_non_intra_matrix;
999 } else {
1000 qmat = s->q_intra_matrix;
1001 }
1002 } else {
1003 i = 0;
1004 last_non_zero = -1;
1005 qmat = s->q_non_intra_matrix;
1006 }
1007
1008 for(;i<64;i++) {
1009 j = zigzag_direct[i];
1010 level = block[j];
1011 level = level * qmat[j];
1012 #ifdef PARANOID
1013 {
1014 static int count = 0;
1015 int level1, level2, qmat1;
1016 double val;
1017 if (qmat == s->q_non_intra_matrix) {
1018 qmat1 = default_non_intra_matrix[j] * s->qscale;
1019 } else {
1020 qmat1 = default_intra_matrix[j] * s->qscale;
1021 }
1022 if (av_fdct != jpeg_fdct_ifast)
1023 val = ((double)block[j] * 8.0) / (double)qmat1;
1024 else
1025 val = ((double)block[j] * 8.0 * 2048.0) /
1026 ((double)qmat1 * aanscales[j]);
1027 level1 = (int)val;
1028 level2 = level / (1 << (QMAT_SHIFT - 3));
1029 if (level1 != level2) {
1030 fprintf(stderr, "%d: quant error qlevel=%d wanted=%d level=%d qmat1=%d qmat=%d wantedf=%0.6f\n",
1031 count, level2, level1, block[j], qmat1, qmat[j],
1032 val);
1033 count++;
1034 }
1035
1036 }
1037 #endif
1038 /* XXX: slight error for the low range. Test should be equivalent to
1039 (level <= -(1 << (QMAT_SHIFT - 3)) || level >= (1 <<
1040 (QMAT_SHIFT - 3)))
1041 */
1042 if (((level << (31 - (QMAT_SHIFT - 3))) >> (31 - (QMAT_SHIFT - 3))) !=
1043 level) {
1044 level = level / (1 << (QMAT_SHIFT - 3));
1045 /* XXX: currently, this code is not optimal. the range should be:
1046 mpeg1: -255..255
1047 mpeg2: -2048..2047
1048 h263: -128..127
1049 mpeg4: -2048..2047
1050 */
1051 if (level > 127)
1052 level = 127;
1053 else if (level < -128)
1054 level = -128;
1055 block[j] = level;
1056 last_non_zero = i;
1057 } else {
1058 block[j] = 0;
1059 }
1060 }
1061 return last_non_zero;
1062 }
1063
1064 static int dct_quantize_mmx(MpegEncContext *s,
1065 DCTELEM *block, int n,
1066 int qscale)
1067 {
1068 int i, j, level, last_non_zero, q;
1069 const int *qmat;
1070
1071 av_fdct (block);
1072
1073 /* we need this permutation so that we correct the IDCT
1074 permutation. will be moved into DCT code */
1075 block_permute(block);
1076
1077 if (s->mb_intra) {
1078 if (n < 4)
1079 q = s->y_dc_scale;
1080 else
1081 q = s->c_dc_scale;
1082
1083 /* note: block[0] is assumed to be positive */
1084 block[0] = (block[0] + (q >> 1)) / q;
1085 i = 1;
1086 last_non_zero = 0;
1087 if (s->out_format == FMT_H263) {
1088 qmat = s->q_non_intra_matrix;
1089 } else {
1090 qmat = s->q_intra_matrix;
1091 }
1092 } else {
1093 i = 0;
1094 last_non_zero = -1;
1095 qmat = s->q_non_intra_matrix;
1096 }
1097
1098 for(;i<64;i++) {
1099 j = zigzag_direct[i];
1100 level = block[j];
1101 level = level * qmat[j];
1102 /* XXX: slight error for the low range. Test should be equivalent to
1103 (level <= -(1 << (QMAT_SHIFT_MMX - 3)) || level >= (1 <<
1104 (QMAT_SHIFT_MMX - 3)))
1105 */
1106 if (((level << (31 - (QMAT_SHIFT_MMX - 3))) >> (31 - (QMAT_SHIFT_MMX - 3))) !=
1107 level) {
1108 level = level / (1 << (QMAT_SHIFT_MMX - 3));
1109 /* XXX: currently, this code is not optimal. the range should be:
1110 mpeg1: -255..255
1111 mpeg2: -2048..2047
1112 h263: -128..127
1113 mpeg4: -2048..2047
1114 */
1115 if (level > 127)
1116 level = 127;
1117 else if (level < -128)
1118 level = -128;
1119 block[j] = level;
1120 last_non_zero = i;
1121 } else {
1122 block[j] = 0;
1123 }
1124 }
1125 return last_non_zero;
1126 }
1127
1128 static void dct_unquantize_mpeg1_c(MpegEncContext *s,
1129 DCTELEM *block, int n, int qscale)
1130 {
1131 int i, level;
1132 const UINT16 *quant_matrix;
1133
1134 if (s->mb_intra) {
1135 if (n < 4)
1136 block[0] = block[0] * s->y_dc_scale;
1137 else
1138 block[0] = block[0] * s->c_dc_scale;
1139 /* XXX: only mpeg1 */
1140 quant_matrix = s->intra_matrix;
1141 for(i=1;i<64;i++) {
1142 level = block[i];
1143 if (level) {
1144 if (level < 0) {
1145 level = -level;
1146 level = (int)(level * qscale * quant_matrix[i]) >> 3;
1147 level = (level - 1) | 1;
1148 level = -level;
1149 } else {
1150 level = (int)(level * qscale * quant_matrix[i]) >> 3;
1151 level = (level - 1) | 1;
1152 }
1153 #ifdef PARANOID
1154 if (level < -2048 || level > 2047)
1155 fprintf(stderr, "unquant error %d %d\n", i, level);
1156 #endif
1157 block[i] = level;
1158 }
1159 }
1160 } else {
1161 i = 0;
1162 quant_matrix = s->non_intra_matrix;
1163 for(;i<64;i++) {
1164 level = block[i];
1165 if (level) {
1166 if (level < 0) {
1167 level = -level;
1168 level = (((level << 1) + 1) * qscale *
1169 ((int) (quant_matrix[i]))) >> 4;
1170 level = (level - 1) | 1;
1171 level = -level;
1172 } else {
1173 level = (((level << 1) + 1) * qscale *
1174 ((int) (quant_matrix[i]))) >> 4;
1175 level = (level - 1) | 1;
1176 }
1177 #ifdef PARANOID
1178 if (level < -2048 || level > 2047)
1179 fprintf(stderr, "unquant error %d %d\n", i, level);
1180 #endif
1181 block[i] = level;
1182 }
1183 }
1184 }
1185 }
1186
1187 static void dct_unquantize_h263_c(MpegEncContext *s,
1188 DCTELEM *block, int n, int qscale)
1189 {
1190 int i, level, qmul, qadd;
1191
1192 if (s->mb_intra) {
1193 if (n < 4)
1194 block[0] = block[0] * s->y_dc_scale;
1195 else
1196 block[0] = block[0] * s->c_dc_scale;
1197 i = 1;
1198 } else {
1199 i = 0;
1200 }
1201
1202 qmul = s->qscale << 1;
1203 qadd = (s->qscale - 1) | 1;
1204
1205 for(;i<64;i++) {
1206 level = block[i];
1207 if (level) {
1208 if (level < 0) {
1209 level = level * qmul - qadd;
1210 } else {
1211 level = level * qmul + qadd;
1212 }
1213 #ifdef PARANOID
1214 if (level < -2048 || level > 2047)
1215 fprintf(stderr, "unquant error %d %d\n", i, level);
1216 #endif
1217 block[i] = level;
1218 }
1219 }
1220 }
1221
1222 /* rate control */
1223
1224 /* an I frame is I_FRAME_SIZE_RATIO bigger than a P frame */
1225 #define I_FRAME_SIZE_RATIO 3.0
1226 #define QSCALE_K 20
1227
1228 static void rate_control_init(MpegEncContext *s)
1229 {
1230 s->wanted_bits = 0;
1231
1232 if (s->intra_only) {
1233 s->I_frame_bits = ((INT64)s->bit_rate * FRAME_RATE_BASE) / s->frame_rate;
1234 s->P_frame_bits = s->I_frame_bits;
1235 } else {
1236 s->P_frame_bits = (int) ((float)(s->gop_size * s->bit_rate) /
1237 (float)((float)s->frame_rate / FRAME_RATE_BASE * (I_FRAME_SIZE_RATIO + s->gop_size - 1)));
1238 s->I_frame_bits = (int)(s->P_frame_bits * I_FRAME_SIZE_RATIO);
1239 }
1240
1241 #if defined(DEBUG)
1242 printf("I_frame_size=%d P_frame_size=%d\n",
1243 s->I_frame_bits, s->P_frame_bits);
1244 #endif
1245 }
1246
1247
1248 /*
1249 * This heuristic is rather poor, but at least we do not have to
1250 * change the qscale at every macroblock.
1251 */
1252 static int rate_estimate_qscale(MpegEncContext *s)
1253 {
1254 long long total_bits = s->total_bits;
1255 float q;
1256 int qscale, diff, qmin;
1257
1258 if (s->pict_type == I_TYPE) {
1259 s->wanted_bits += s->I_frame_bits;
1260 } else {
1261 s->wanted_bits += s->P_frame_bits;
1262 }
1263 diff = s->wanted_bits - total_bits;
1264 q = 31.0 - (float)diff / (QSCALE_K * s->mb_height * s->mb_width);
1265 /* adjust for I frame */
1266 if (s->pict_type == I_TYPE && !s->intra_only) {
1267 q /= I_FRAME_SIZE_RATIO;
1268 }
1269
1270 /* using a too small Q scale leeds to problems in mpeg1 and h263
1271 because AC coefficients are clamped to 255 or 127 */
1272 qmin = 3;
1273 if (q < qmin)
1274 q = qmin;
1275 else if (q > 31)
1276 q = 31;
1277 qscale = (int)(q + 0.5);
1278 #if defined(DEBUG)
1279 printf("%d: total=%Ld br=%0.1f diff=%d qest=%0.1f\n",
1280 s->picture_number,
1281 total_bits,
1282 (float)s->frame_rate / FRAME_RATE_BASE *
1283 total_bits / s->picture_number,
1284 diff, q);
1285 #endif
1286 return qscale;
1287 }
1288
1289 AVCodec mpeg1video_encoder = {
1290 "mpeg1video",
1291 CODEC_TYPE_VIDEO,
1292 CODEC_ID_MPEG1VIDEO,
1293 sizeof(MpegEncContext),
1294 MPV_encode_init,
1295 MPV_encode_picture,
1296 MPV_encode_end,
1297 };
1298
1299 AVCodec h263_encoder = {
1300 "h263",
1301 CODEC_TYPE_VIDEO,
1302 CODEC_ID_H263,
1303 sizeof(MpegEncContext),
1304 MPV_encode_init,
1305 MPV_encode_picture,
1306 MPV_encode_end,
1307 };
1308
1309 AVCodec h263p_encoder = {
1310 "h263p",
1311 CODEC_TYPE_VIDEO,
1312 CODEC_ID_H263P,
1313 sizeof(MpegEncContext),
1314 MPV_encode_init,
1315 MPV_encode_picture,
1316 MPV_encode_end,
1317 };
1318
1319 AVCodec rv10_encoder = {
1320 "rv10",
1321 CODEC_TYPE_VIDEO,
1322 CODEC_ID_RV10,
1323 sizeof(MpegEncContext),
1324 MPV_encode_init,
1325 MPV_encode_picture,
1326 MPV_encode_end,
1327 };
1328
1329 AVCodec mjpeg_encoder = {
1330 "mjpeg",
1331 CODEC_TYPE_VIDEO,
1332 CODEC_ID_MJPEG,
1333 sizeof(MpegEncContext),
1334 MPV_encode_init,
1335 MPV_encode_picture,
1336 MPV_encode_end,
1337 };
1338
1339 AVCodec opendivx_encoder = {
1340 "opendivx",
1341 CODEC_TYPE_VIDEO,
1342 CODEC_ID_OPENDIVX,
1343 sizeof(MpegEncContext),
1344 MPV_encode_init,
1345 MPV_encode_picture,
1346 MPV_encode_end,
1347 };
1348
1349 AVCodec msmpeg4_encoder = {
1350 "msmpeg4",
1351 CODEC_TYPE_VIDEO,
1352 CODEC_ID_MSMPEG4,
1353 sizeof(MpegEncContext),
1354 MPV_encode_init,
1355 MPV_encode_picture,
1356 MPV_encode_end,
1357 };