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ffmpeg / libavcodec / mpegvideo.c @ d771bcae

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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
#define EDGE_WIDTH 16
28

    
29
/* enable all paranoid tests for rounding, overflows, etc... */
30
//#define PARANOID
31

    
32
//#define DEBUG
33

    
34
/* for jpeg fast DCT */
35
#define CONST_BITS 14
36

    
37
static const unsigned short aanscales[64] = {
38
    /* precomputed values scaled up by 14 bits */
39
    16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
40
    22725, 31521, 29692, 26722, 22725, 17855, 12299,  6270,
41
    21407, 29692, 27969, 25172, 21407, 16819, 11585,  5906,
42
    19266, 26722, 25172, 22654, 19266, 15137, 10426,  5315,
43
    16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
44
    12873, 17855, 16819, 15137, 12873, 10114,  6967,  3552,
45
    8867, 12299, 11585, 10426,  8867,  6967,  4799,  2446,
46
    4520,  6270,  5906,  5315,  4520,  3552,  2446,  1247
47
};
48

    
49
static UINT8 h263_chroma_roundtab[16] = {
50
    0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
51
};
52

    
53
static void encode_picture(MpegEncContext *s, int picture_number);
54
static void rate_control_init(MpegEncContext *s);
55
static int rate_estimate_qscale(MpegEncContext *s);
56

    
57
/* default motion estimation */
58
int motion_estimation_method = ME_LOG;
59

    
60
/* XXX: should use variable shift ? */
61
#define QMAT_SHIFT_MMX 19
62
#define QMAT_SHIFT 25
63

    
64
static void convert_matrix(int *qmat, const UINT16 *quant_matrix, int qscale)
65
{
66
    int i;
67

    
68
    if (av_fdct == jpeg_fdct_ifast) {
69
        for(i=0;i<64;i++) {
70
            /* 16 <= qscale * quant_matrix[i] <= 7905 */
71
            /* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026 */
72
            
73
            qmat[i] = (int)((1ULL << (QMAT_SHIFT + 11)) / (aanscales[i] * qscale * quant_matrix[i]));
74
        }
75
    } else {
76
        for(i=0;i<64;i++) {
77
            /* We can safely suppose that 16 <= quant_matrix[i] <= 255
78
               So 16 <= qscale * quant_matrix[i] <= 7905
79
               so (1 << QMAT_SHIFT) / 16 >= qmat[i] >= (1 << QMAT_SHIFT) / 7905
80
            */
81
            qmat[i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
82
        }
83
    }
84
}
85

    
86
/* init common structure for both encoder and decoder */
87
int MPV_common_init(MpegEncContext *s)
88
{
89
    int c_size, i;
90
    UINT8 *pict;
91

    
92
    s->mb_width = (s->width + 15) / 16;
93
    s->mb_height = (s->height + 15) / 16;
94
    s->linesize = s->mb_width * 16 + 2 * EDGE_WIDTH;
95

    
96
    for(i=0;i<3;i++) {
97
        int w, h, shift, pict_start;
98

    
99
        w = s->linesize;
100
        h = s->mb_height * 16 + 2 * EDGE_WIDTH;
101
        shift = (i == 0) ? 0 : 1;
102
        c_size = (w >> shift) * (h >> shift);
103
        pict_start = (w >> shift) * (EDGE_WIDTH >> shift) + (EDGE_WIDTH >> shift);
104

    
105
        pict = av_mallocz(c_size);
106
        if (pict == NULL)
107
            goto fail;
108
        s->last_picture_base[i] = pict;
109
        s->last_picture[i] = pict + pict_start;
110
    
111
        pict = av_mallocz(c_size);
112
        if (pict == NULL)
113
            goto fail;
114
        s->next_picture_base[i] = pict;
115
        s->next_picture[i] = pict + pict_start;
116

    
117
        if (s->has_b_frames) {
118
            pict = av_mallocz(c_size);
119
            if (pict == NULL) 
120
                goto fail;
121
            s->aux_picture_base[i] = pict;
122
            s->aux_picture[i] = pict + pict_start;
123
        }
124
    }
125

    
126
    if (s->out_format == FMT_H263) {
127
        int size;
128
        /* MV prediction */
129
        size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
130
        s->motion_val = malloc(size * 2 * sizeof(INT16));
131
        if (s->motion_val == NULL)
132
            goto fail;
133
        memset(s->motion_val, 0, size * 2 * sizeof(INT16));
134
    }
135

    
136
    if (s->h263_pred) {
137
        int y_size, c_size, i, size;
138
        
139
        /* dc values */
140

    
141
        y_size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
142
        c_size = (s->mb_width + 2) * (s->mb_height + 2);
143
        size = y_size + 2 * c_size;
144
        s->dc_val[0] = malloc(size * sizeof(INT16));
145
        if (s->dc_val[0] == NULL)
146
            goto fail;
147
        s->dc_val[1] = s->dc_val[0] + y_size;
148
        s->dc_val[2] = s->dc_val[1] + c_size;
149
        for(i=0;i<size;i++)
150
            s->dc_val[0][i] = 1024;
151

    
152
        /* ac values */
153
        s->ac_val[0] = av_mallocz(size * sizeof(INT16) * 16);
154
        if (s->ac_val[0] == NULL)
155
            goto fail;
156
        s->ac_val[1] = s->ac_val[0] + y_size;
157
        s->ac_val[2] = s->ac_val[1] + c_size;
158
        
159
        /* cbp values */
160
        s->coded_block = av_mallocz(y_size);
161
        if (!s->coded_block)
162
            goto fail;
163
    }
164
    /* default structure is frame */
165
    s->picture_structure = PICT_FRAME;
166

    
167
    /* init default q matrix (only for mpeg and mjpeg) */
168
    for(i=0;i<64;i++) {
169
        s->intra_matrix[i] = default_intra_matrix[i];
170
        s->chroma_intra_matrix[i] = default_intra_matrix[i];
171
        s->non_intra_matrix[i] = default_non_intra_matrix[i];
172
        s->chroma_non_intra_matrix[i] = default_non_intra_matrix[i];
173
    }
174
    s->context_initialized = 1;
175
    return 0;
176
 fail:
177
    if (s->motion_val)
178
        free(s->motion_val);
179
    if (s->dc_val[0])
180
        free(s->dc_val[0]);
181
    if (s->ac_val[0])
182
        free(s->ac_val[0]);
183
    if (s->coded_block)
184
        free(s->coded_block);
185
    for(i=0;i<3;i++) {
186
        if (s->last_picture_base[i])
187
            free(s->last_picture_base[i]);
188
        if (s->next_picture_base[i])
189
            free(s->next_picture_base[i]);
190
        if (s->aux_picture_base[i])
191
            free(s->aux_picture_base[i]);
192
    }
193
    return -1;
194
}
195

    
196
/* init common structure for both encoder and decoder */
197
void MPV_common_end(MpegEncContext *s)
198
{
199
    int i;
200

    
201
    if (s->motion_val)
202
        free(s->motion_val);
203
    if (s->h263_pred) {
204
        free(s->dc_val[0]);
205
        free(s->ac_val[0]);
206
        free(s->coded_block);
207
    }
208
    for(i=0;i<3;i++) {
209
        free(s->last_picture_base[i]);
210
        free(s->next_picture_base[i]);
211
        if (s->has_b_frames)
212
            free(s->aux_picture_base[i]);
213
    }
214
    s->context_initialized = 0;
215
}
216

    
217
/* init video encoder */
218
int MPV_encode_init(AVCodecContext *avctx)
219
{
220
    MpegEncContext *s = avctx->priv_data;
221

    
222
    s->bit_rate = avctx->bit_rate;
223
    s->frame_rate = avctx->frame_rate;
224
    s->width = avctx->width;
225
    s->height = avctx->height;
226
    s->gop_size = avctx->gop_size;
227
    if (s->gop_size <= 1) {
228
        s->intra_only = 1;
229
        s->gop_size = 12;
230
    } else {
231
        s->intra_only = 0;
232
    }
233
    s->full_search = motion_estimation_method;
234

    
235
    s->fixed_qscale = (avctx->flags & CODEC_FLAG_QSCALE);
236

    
237
    switch(avctx->codec->id) {
238
    case CODEC_ID_MPEG1VIDEO:
239
        s->out_format = FMT_MPEG1;
240
        break;
241
    case CODEC_ID_MJPEG:
242
        s->out_format = FMT_MJPEG;
243
        s->intra_only = 1; /* force intra only for jpeg */
244
        if (mjpeg_init(s) < 0)
245
            return -1;
246
        break;
247
    case CODEC_ID_H263:
248
        if (h263_get_picture_format(s->width, s->height) == 7)
249
            return -1;
250
        s->out_format = FMT_H263;
251
        break;
252
    case CODEC_ID_H263P:
253
        s->out_format = FMT_H263;
254
        s->h263_plus = 1;
255
        /* XXX: not unrectricted mv yet */
256
        break;
257
    case CODEC_ID_RV10:
258
        s->out_format = FMT_H263;
259
        s->h263_rv10 = 1;
260
        break;
261
    case CODEC_ID_OPENDIVX:
262
        s->out_format = FMT_H263;
263
        s->h263_pred = 1;
264
        s->unrestricted_mv = 1;
265
        break;
266
    case CODEC_ID_MSMPEG4:
267
        s->out_format = FMT_H263;
268
        s->h263_msmpeg4 = 1;
269
        s->h263_pred = 1;
270
        s->unrestricted_mv = 1;
271
        break;
272
    default:
273
        return -1;
274
    }
275

    
276
    if (s->out_format == FMT_H263)
277
        h263_encode_init_vlc(s);
278

    
279
    /* init */
280
    if (MPV_common_init(s) < 0)
281
        return -1;
282
    
283
    /* rate control init */
284
    rate_control_init(s);
285

    
286
    s->picture_number = 0;
287
    s->fake_picture_number = 0;
288
    /* motion detector init */
289
    s->f_code = 1;
290

    
291
    return 0;
292
}
293

    
294
int MPV_encode_end(AVCodecContext *avctx)
295
{
296
    MpegEncContext *s = avctx->priv_data;
297

    
298
#ifdef STATS
299
    print_stats();
300
#endif
301
    MPV_common_end(s);
302
    if (s->out_format == FMT_MJPEG)
303
        mjpeg_close(s);
304
    return 0;
305
}
306

    
307
/* draw the edges of width 'w' of an image of size width, height */
308
static void draw_edges(UINT8 *buf, int wrap, int width, int height, int w)
309
{
310
    UINT8 *ptr, *last_line;
311
    int i;
312

    
313
    last_line = buf + (height - 1) * wrap;
314
    for(i=0;i<w;i++) {
315
        /* top and bottom */
316
        memcpy(buf - (i + 1) * wrap, buf, width);
317
        memcpy(last_line + (i + 1) * wrap, last_line, width);
318
    }
319
    /* left and right */
320
    ptr = buf;
321
    for(i=0;i<height;i++) {
322
        memset(ptr - w, ptr[0], w);
323
        memset(ptr + width, ptr[width-1], w);
324
        ptr += wrap;
325
    }
326
    /* corners */
327
    for(i=0;i<w;i++) {
328
        memset(buf - (i + 1) * wrap - w, buf[0], w); /* top left */
329
        memset(buf - (i + 1) * wrap + width, buf[width-1], w); /* top right */
330
        memset(last_line + (i + 1) * wrap - w, last_line[0], w); /* top left */
331
        memset(last_line + (i + 1) * wrap + width, last_line[width-1], w); /* top right */
332
    }
333
}
334

    
335

    
336
/* generic function for encode/decode called before a frame is coded/decoded */
337
void MPV_frame_start(MpegEncContext *s)
338
{
339
    int i;
340
    UINT8 *tmp;
341

    
342
    if (s->pict_type == B_TYPE) {
343
        for(i=0;i<3;i++) {
344
            s->current_picture[i] = s->aux_picture[i];
345
        }
346
    } else {
347
        for(i=0;i<3;i++) {
348
            /* swap next and last */
349
            tmp = s->last_picture[i];
350
            s->last_picture[i] = s->next_picture[i];
351
            s->next_picture[i] = tmp;
352
            s->current_picture[i] = tmp;
353
        }
354
    }
355
}
356

    
357
/* generic function for encode/decode called after a frame has been coded/decoded */
358
void MPV_frame_end(MpegEncContext *s)
359
{
360
    /* draw edge for correct motion prediction if outside */
361
    if (s->pict_type != B_TYPE) {
362
        draw_edges(s->current_picture[0], s->linesize, s->width, s->height, EDGE_WIDTH);
363
        draw_edges(s->current_picture[1], s->linesize/2, s->width/2, s->height/2, EDGE_WIDTH/2);
364
        draw_edges(s->current_picture[2], s->linesize/2, s->width/2, s->height/2, EDGE_WIDTH/2);
365
    }
366
}
367

    
368
int MPV_encode_picture(AVCodecContext *avctx,
369
                       unsigned char *buf, int buf_size, void *data)
370
{
371
    MpegEncContext *s = avctx->priv_data;
372
    AVPicture *pict = data;
373
    int i, j;
374

    
375
    if (s->fixed_qscale) 
376
        s->qscale = avctx->quality;
377

    
378
    init_put_bits(&s->pb, buf, buf_size, NULL, NULL);
379

    
380
    if (!s->intra_only) {
381
        /* first picture of GOP is intra */
382
        if ((s->picture_number % s->gop_size) == 0)
383
            s->pict_type = I_TYPE;
384
        else
385
            s->pict_type = P_TYPE;
386
    } else {
387
        s->pict_type = I_TYPE;
388
    }
389
    avctx->key_frame = (s->pict_type == I_TYPE);
390
    
391
    MPV_frame_start(s);
392

    
393
    for(i=0;i<3;i++) {
394
        UINT8 *src = pict->data[i];
395
        UINT8 *dest = s->current_picture[i];
396
        int src_wrap = pict->linesize[i];
397
        int dest_wrap = s->linesize;
398
        int w = s->width;
399
        int h = s->height;
400

    
401
        if (i >= 1) {
402
            dest_wrap >>= 1;
403
            w >>= 1;
404
            h >>= 1;
405
        }
406

    
407
        for(j=0;j<h;j++) {
408
            memcpy(dest, src, w);
409
            dest += dest_wrap;
410
            src += src_wrap;
411
        }
412
        s->new_picture[i] = s->current_picture[i];
413
    }
414

    
415
    encode_picture(s, s->picture_number);
416
    
417
    MPV_frame_end(s);
418
    s->picture_number++;
419

    
420
    if (s->out_format == FMT_MJPEG)
421
        mjpeg_picture_trailer(s);
422

    
423
    flush_put_bits(&s->pb);
424
    s->total_bits += (s->pb.buf_ptr - s->pb.buf) * 8;
425
    avctx->quality = s->qscale;
426
    return s->pb.buf_ptr - s->pb.buf;
427
}
428

    
429
static inline int clip(int a, int amin, int amax)
430
{
431
    if (a < amin)
432
        return amin;
433
    else if (a > amax)
434
        return amax;
435
    else
436
        return a;
437
}
438

    
439
static int dct_quantize(MpegEncContext *s, DCTELEM *block, int n, int qscale);
440
static int dct_quantize_mmx(MpegEncContext *s, 
441
                            DCTELEM *block, int n,
442
                            int qscale);
443
static void dct_unquantize(MpegEncContext *s, DCTELEM *block, int n, int qscale);
444

    
445
/* apply one mpeg motion vector to the three components */
446
static inline void mpeg_motion(MpegEncContext *s,
447
                               UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
448
                               int dest_offset,
449
                               UINT8 **ref_picture, int src_offset,
450
                               int field_based, op_pixels_func *pix_op,
451
                               int motion_x, int motion_y, int h)
452
{
453
    UINT8 *ptr;
454
    int dxy, offset, mx, my, src_x, src_y, height, linesize;
455
    
456
    dxy = ((motion_y & 1) << 1) | (motion_x & 1);
457
    src_x = s->mb_x * 16 + (motion_x >> 1);
458
    src_y = s->mb_y * (16 >> field_based) + (motion_y >> 1);
459
                
460
    /* WARNING: do no forget half pels */
461
    height = s->height >> field_based;
462
    src_x = clip(src_x, -16, s->width);
463
    if (src_x == s->width)
464
        dxy &= ~1;
465
    src_y = clip(src_y, -16, height);
466
    if (src_y == height)
467
        dxy &= ~2;
468
    linesize = s->linesize << field_based;
469
    ptr = ref_picture[0] + (src_y * linesize) + (src_x) + src_offset;
470
    dest_y += dest_offset;
471
    pix_op[dxy](dest_y, ptr, linesize, h);
472
    pix_op[dxy](dest_y + 8, ptr + 8, linesize, h);
473

    
474
    if (s->out_format == FMT_H263) {
475
        dxy = 0;
476
        if ((motion_x & 3) != 0)
477
            dxy |= 1;
478
        if ((motion_y & 3) != 0)
479
            dxy |= 2;
480
        mx = motion_x >> 2;
481
        my = motion_y >> 2;
482
    } else {
483
        mx = motion_x / 2;
484
        my = motion_y / 2;
485
        dxy = ((my & 1) << 1) | (mx & 1);
486
        mx >>= 1;
487
        my >>= 1;
488
    }
489
    
490
    src_x = s->mb_x * 8 + mx;
491
    src_y = s->mb_y * (8 >> field_based) + my;
492
    src_x = clip(src_x, -8, s->width >> 1);
493
    if (src_x == (s->width >> 1))
494
        dxy &= ~1;
495
    src_y = clip(src_y, -8, height >> 1);
496
    if (src_y == (height >> 1))
497
        dxy &= ~2;
498

    
499
    offset = (src_y * (linesize >> 1)) + src_x + (src_offset >> 1);
500
    ptr = ref_picture[1] + offset;
501
    pix_op[dxy](dest_cb + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
502
    ptr = ref_picture[2] + offset;
503
    pix_op[dxy](dest_cr + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
504
}
505

    
506
static inline void MPV_motion(MpegEncContext *s, 
507
                              UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
508
                              int dir, UINT8 **ref_picture, 
509
                              op_pixels_func *pix_op)
510
{
511
    int dxy, offset, mx, my, src_x, src_y, motion_x, motion_y;
512
    int mb_x, mb_y, i;
513
    UINT8 *ptr, *dest;
514

    
515
    mb_x = s->mb_x;
516
    mb_y = s->mb_y;
517

    
518
    switch(s->mv_type) {
519
    case MV_TYPE_16X16:
520
        mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
521
                    ref_picture, 0,
522
                    0, pix_op,
523
                    s->mv[dir][0][0], s->mv[dir][0][1], 16);
524
        break;
525
    case MV_TYPE_8X8:
526
        for(i=0;i<4;i++) {
527
            motion_x = s->mv[dir][i][0];
528
            motion_y = s->mv[dir][i][1];
529

    
530
            dxy = ((motion_y & 1) << 1) | (motion_x & 1);
531
            src_x = mb_x * 16 + (motion_x >> 1) + (i & 1) * 8;
532
            src_y = mb_y * 16 + (motion_y >> 1) + ((i >> 1) & 1) * 8;
533
                    
534
            /* WARNING: do no forget half pels */
535
            src_x = clip(src_x, -16, s->width);
536
            if (src_x == s->width)
537
                dxy &= ~1;
538
            src_y = clip(src_y, -16, s->height);
539
            if (src_y == s->height)
540
                dxy &= ~2;
541
                    
542
            ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
543
            dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
544
            pix_op[dxy](dest, ptr, s->linesize, 8);
545
        }
546
        /* In case of 8X8, we construct a single chroma motion vector
547
           with a special rounding */
548
        mx = 0;
549
        my = 0;
550
        for(i=0;i<4;i++) {
551
            mx += s->mv[dir][i][0];
552
            my += s->mv[dir][i][1];
553
        }
554
        if (mx >= 0)
555
            mx = (h263_chroma_roundtab[mx & 0xf] + ((mx >> 3) & ~1));
556
        else {
557
            mx = -mx;
558
            mx = -(h263_chroma_roundtab[mx & 0xf] + ((mx >> 3) & ~1));
559
        }
560
        if (my >= 0)
561
            my = (h263_chroma_roundtab[my & 0xf] + ((my >> 3) & ~1));
562
        else {
563
            my = -my;
564
            my = -(h263_chroma_roundtab[my & 0xf] + ((my >> 3) & ~1));
565
        }
566
        dxy = ((my & 1) << 1) | (mx & 1);
567
        mx >>= 1;
568
        my >>= 1;
569

    
570
        src_x = mb_x * 8 + mx;
571
        src_y = mb_y * 8 + my;
572
        src_x = clip(src_x, -8, s->width/2);
573
        if (src_x == s->width/2)
574
            dxy &= ~1;
575
        src_y = clip(src_y, -8, s->height/2);
576
        if (src_y == s->height/2)
577
            dxy &= ~2;
578
        
579
        offset = (src_y * (s->linesize >> 1)) + src_x;
580
        ptr = ref_picture[1] + offset;
581
        pix_op[dxy](dest_cb, ptr, s->linesize >> 1, 8);
582
        ptr = ref_picture[2] + offset;
583
        pix_op[dxy](dest_cr, ptr, s->linesize >> 1, 8);
584
        break;
585
    case MV_TYPE_FIELD:
586
        if (s->picture_structure == PICT_FRAME) {
587
            /* top field */
588
            mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
589
                        ref_picture, s->field_select[dir][0] ? s->linesize : 0,
590
                        1, pix_op,
591
                        s->mv[dir][0][0], s->mv[dir][0][1], 8);
592
            /* bottom field */
593
            mpeg_motion(s, dest_y, dest_cb, dest_cr, s->linesize,
594
                        ref_picture, s->field_select[dir][1] ? s->linesize : 0,
595
                        1, pix_op,
596
                        s->mv[dir][1][0], s->mv[dir][1][1], 8);
597
        } else {
598
            
599

    
600
        }
601
        break;
602
    }
603
}
604

    
605

    
606
/* put block[] to dest[] */
607
static inline void put_dct(MpegEncContext *s, 
608
                           DCTELEM *block, int i, UINT8 *dest, int line_size)
609
{
610
    if (!s->mpeg2)
611
        dct_unquantize(s, block, i, s->qscale);
612
    j_rev_dct (block);
613
    put_pixels_clamped(block, dest, line_size);
614
}
615

    
616
/* add block[] to dest[] */
617
static inline void add_dct(MpegEncContext *s, 
618
                           DCTELEM *block, int i, UINT8 *dest, int line_size)
619
{
620
    if (s->block_last_index[i] >= 0) {
621
        if (!s->mpeg2)
622
            dct_unquantize(s, block, i, s->qscale);
623
        j_rev_dct (block);
624
        add_pixels_clamped(block, dest, line_size);
625
    }
626
}
627

    
628
/* generic function called after a macroblock has been parsed by the
629
   decoder or after it has been encoded by the encoder.
630

631
   Important variables used:
632
   s->mb_intra : true if intra macroblock
633
   s->mv_dir   : motion vector direction
634
   s->mv_type  : motion vector type
635
   s->mv       : motion vector
636
   s->interlaced_dct : true if interlaced dct used (mpeg2)
637
 */
638
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
639
{
640
    int mb_x, mb_y, motion_x, motion_y;
641
    int dct_linesize, dct_offset;
642
    op_pixels_func *op_pix;
643

    
644
    mb_x = s->mb_x;
645
    mb_y = s->mb_y;
646

    
647
    /* update DC predictors for P macroblocks */
648
    if (!s->mb_intra) {
649
        if (s->h263_pred) {
650
            int wrap, x, y, v;
651
            wrap = 2 * s->mb_width + 2;
652
            v = 1024;
653
            x = 2 * mb_x + 1;
654
            y = 2 * mb_y + 1;
655
            s->dc_val[0][(x) + (y) * wrap] = v;
656
            s->dc_val[0][(x + 1) + (y) * wrap] = v;
657
            s->dc_val[0][(x) + (y + 1) * wrap] = v;
658
            s->dc_val[0][(x + 1) + (y + 1) * wrap] = v;
659
            /* ac pred */
660
            memset(s->ac_val[0][(x) + (y) * wrap], 0, 16 * sizeof(INT16));
661
            memset(s->ac_val[0][(x + 1) + (y) * wrap], 0, 16 * sizeof(INT16));
662
            memset(s->ac_val[0][(x) + (y + 1) * wrap], 0, 16 * sizeof(INT16));
663
            memset(s->ac_val[0][(x + 1) + (y + 1) * wrap], 0, 16 * sizeof(INT16));
664
            if (s->h263_msmpeg4) {
665
                s->coded_block[(x) + (y) * wrap] = 0;
666
                s->coded_block[(x + 1) + (y) * wrap] = 0;
667
                s->coded_block[(x) + (y + 1) * wrap] = 0;
668
                s->coded_block[(x + 1) + (y + 1) * wrap] = 0;
669
            }
670
            /* chroma */
671
            wrap = s->mb_width + 2;
672
            x = mb_x + 1;
673
            y = mb_y + 1;
674
            s->dc_val[1][(x) + (y) * wrap] = v;
675
            s->dc_val[2][(x) + (y) * wrap] = v;
676
            /* ac pred */
677
            memset(s->ac_val[1][(x) + (y) * wrap], 0, 16 * sizeof(INT16));
678
            memset(s->ac_val[2][(x) + (y) * wrap], 0, 16 * sizeof(INT16));
679
        } else {
680
            s->last_dc[0] = 128 << s->intra_dc_precision;
681
            s->last_dc[1] = 128 << s->intra_dc_precision;
682
            s->last_dc[2] = 128 << s->intra_dc_precision;
683
        }
684
    }
685
    
686
    /* update motion predictor */
687
    if (s->out_format == FMT_H263) {
688
        int x, y, wrap;
689
        
690
        x = 2 * mb_x + 1;
691
        y = 2 * mb_y + 1;
692
        wrap = 2 * s->mb_width + 2;
693
        if (s->mb_intra) {
694
            motion_x = 0;
695
            motion_y = 0;
696
            goto motion_init;
697
        } else if (s->mv_type == MV_TYPE_16X16) {
698
            motion_x = s->mv[0][0][0];
699
            motion_y = s->mv[0][0][1];
700
        motion_init:
701
            /* no update if 8X8 because it has been done during parsing */
702
            s->motion_val[(x) + (y) * wrap][0] = motion_x;
703
            s->motion_val[(x) + (y) * wrap][1] = motion_y;
704
            s->motion_val[(x + 1) + (y) * wrap][0] = motion_x;
705
            s->motion_val[(x + 1) + (y) * wrap][1] = motion_y;
706
            s->motion_val[(x) + (y + 1) * wrap][0] = motion_x;
707
            s->motion_val[(x) + (y + 1) * wrap][1] = motion_y;
708
            s->motion_val[(x + 1) + (y + 1) * wrap][0] = motion_x;
709
            s->motion_val[(x + 1) + (y + 1) * wrap][1] = motion_y;
710
        }
711
    }
712
    
713
    if (!s->intra_only) {
714
        UINT8 *dest_y, *dest_cb, *dest_cr;
715

    
716
        dest_y = s->current_picture[0] + (mb_y * 16 * s->linesize) + mb_x * 16;
717
        dest_cb = s->current_picture[1] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
718
        dest_cr = s->current_picture[2] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
719

    
720
        if (s->interlaced_dct) {
721
            dct_linesize = s->linesize * 2;
722
            dct_offset = s->linesize;
723
        } else {
724
            dct_linesize = s->linesize;
725
            dct_offset = s->linesize * 8;
726
        }
727

    
728
        if (!s->mb_intra) {
729
            /* motion handling */
730
            if (!s->no_rounding) 
731
                op_pix = put_pixels_tab;
732
            else
733
                op_pix = put_no_rnd_pixels_tab;
734

    
735
            if (s->mv_dir & MV_DIR_FORWARD) {
736
                MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture, op_pix);
737
                if (!s->no_rounding) 
738
                    op_pix = avg_pixels_tab;
739
                else
740
                    op_pix = avg_no_rnd_pixels_tab;
741
            }
742
            if (s->mv_dir & MV_DIR_BACKWARD) {
743
                MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture, op_pix);
744
            }
745

    
746
            /* add dct residue */
747
            add_dct(s, block[0], 0, dest_y, dct_linesize);
748
            add_dct(s, block[1], 1, dest_y + 8, dct_linesize);
749
            add_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
750
            add_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
751

    
752
            add_dct(s, block[4], 4, dest_cb, dct_linesize >> 1);
753
            add_dct(s, block[5], 5, dest_cr, dct_linesize >> 1);
754
        } else {
755
            /* dct only in intra block */
756
            put_dct(s, block[0], 0, dest_y, dct_linesize);
757
            put_dct(s, block[1], 1, dest_y + 8, dct_linesize);
758
            put_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
759
            put_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
760

    
761
            put_dct(s, block[4], 4, dest_cb, dct_linesize >> 1);
762
            put_dct(s, block[5], 5, dest_cr, dct_linesize >> 1);
763
        }
764
    }
765
}
766

    
767
static void encode_picture(MpegEncContext *s, int picture_number)
768
{
769
    int mb_x, mb_y, wrap;
770
    UINT8 *ptr;
771
    DCTELEM block[6][64];
772
    int i, motion_x, motion_y;
773

    
774
    s->picture_number = picture_number;
775
    if (!s->fixed_qscale) 
776
        s->qscale = rate_estimate_qscale(s);
777

    
778
    /* precompute matrix */
779
    if (s->out_format == FMT_MJPEG) {
780
        /* for mjpeg, we do include qscale in the matrix */
781
        s->intra_matrix[0] = default_intra_matrix[0];
782
        for(i=1;i<64;i++)
783
            s->intra_matrix[i] = (default_intra_matrix[i] * s->qscale) >> 3;
784
        convert_matrix(s->q_intra_matrix, s->intra_matrix, 8);
785
    } else {
786
        convert_matrix(s->q_intra_matrix, s->intra_matrix, s->qscale);
787
        convert_matrix(s->q_non_intra_matrix, s->non_intra_matrix, s->qscale);
788
    }
789

    
790
    switch(s->out_format) {
791
    case FMT_MJPEG:
792
        mjpeg_picture_header(s);
793
        break;
794
    case FMT_H263:
795
        if (s->h263_msmpeg4) 
796
            msmpeg4_encode_picture_header(s, picture_number);
797
        else if (s->h263_pred)
798
            mpeg4_encode_picture_header(s, picture_number);
799
        else if (s->h263_rv10) 
800
            rv10_encode_picture_header(s, picture_number);
801
        else
802
            h263_encode_picture_header(s, picture_number);
803
        break;
804
    case FMT_MPEG1:
805
        mpeg1_encode_picture_header(s, picture_number);
806
        break;
807
    }
808
        
809
    /* init last dc values */
810
    /* note: quant matrix value (8) is implied here */
811
    s->last_dc[0] = 128;
812
    s->last_dc[1] = 128;
813
    s->last_dc[2] = 128;
814
    s->mb_incr = 1;
815
    s->last_mv[0][0][0] = 0;
816
    s->last_mv[0][0][1] = 0;
817
    s->mv_type = MV_TYPE_16X16;
818
    s->mv_dir = MV_DIR_FORWARD;
819

    
820
    for(mb_y=0; mb_y < s->mb_height; mb_y++) {
821
        for(mb_x=0; mb_x < s->mb_width; mb_x++) {
822

    
823
            s->mb_x = mb_x;
824
            s->mb_y = mb_y;
825

    
826
            /* compute motion vector and macro block type (intra or non intra) */
827
            motion_x = 0;
828
            motion_y = 0;
829
            if (s->pict_type == P_TYPE) {
830
                s->mb_intra = estimate_motion(s, mb_x, mb_y,
831
                                              &motion_x,
832
                                              &motion_y);
833
            } else {
834
                s->mb_intra = 1;
835
            }
836

    
837
            /* get the pixels */
838
            wrap = s->linesize;
839
            ptr = s->new_picture[0] + (mb_y * 16 * wrap) + mb_x * 16;
840
            get_pixels(block[0], ptr, wrap);
841
            get_pixels(block[1], ptr + 8, wrap);
842
            get_pixels(block[2], ptr + 8 * wrap, wrap);
843
            get_pixels(block[3], ptr + 8 * wrap + 8, wrap);
844
            wrap = s->linesize >> 1;
845
            ptr = s->new_picture[1] + (mb_y * 8 * wrap) + mb_x * 8;
846
            get_pixels(block[4], ptr, wrap);
847

    
848
            wrap = s->linesize >> 1;
849
            ptr = s->new_picture[2] + (mb_y * 8 * wrap) + mb_x * 8;
850
            get_pixels(block[5], ptr, wrap);
851

    
852
            /* subtract previous frame if non intra */
853
            if (!s->mb_intra) {
854
                int dxy, offset, mx, my;
855

    
856
                dxy = ((motion_y & 1) << 1) | (motion_x & 1);
857
                ptr = s->last_picture[0] + 
858
                    ((mb_y * 16 + (motion_y >> 1)) * s->linesize) + 
859
                    (mb_x * 16 + (motion_x >> 1));
860

    
861
                sub_pixels_2(block[0], ptr, s->linesize, dxy);
862
                sub_pixels_2(block[1], ptr + 8, s->linesize, dxy);
863
                sub_pixels_2(block[2], ptr + s->linesize * 8, s->linesize, dxy);
864
                sub_pixels_2(block[3], ptr + 8 + s->linesize * 8, s->linesize ,dxy);
865

    
866
                if (s->out_format == FMT_H263) {
867
                    /* special rounding for h263 */
868
                    dxy = 0;
869
                    if ((motion_x & 3) != 0)
870
                        dxy |= 1;
871
                    if ((motion_y & 3) != 0)
872
                        dxy |= 2;
873
                    mx = motion_x >> 2;
874
                    my = motion_y >> 2;
875
                } else {
876
                    mx = motion_x / 2;
877
                    my = motion_y / 2;
878
                    dxy = ((my & 1) << 1) | (mx & 1);
879
                    mx >>= 1;
880
                    my >>= 1;
881
                }
882
                offset = ((mb_y * 8 + my) * (s->linesize >> 1)) + (mb_x * 8 + mx);
883
                ptr = s->last_picture[1] + offset;
884
                sub_pixels_2(block[4], ptr, s->linesize >> 1, dxy);
885
                ptr = s->last_picture[2] + offset;
886
                sub_pixels_2(block[5], ptr, s->linesize >> 1, dxy);
887
            }
888

    
889
            /* DCT & quantize */
890
            if (s->h263_msmpeg4) {
891
                msmpeg4_dc_scale(s);
892
            } else if (s->h263_pred) {
893
                h263_dc_scale(s);
894
            } else {
895
                /* default quantization values */
896
                s->y_dc_scale = 8;
897
                s->c_dc_scale = 8;
898
            }
899

    
900
            for(i=0;i<6;i++) {
901
                int last_index;
902
                if (av_fdct == jpeg_fdct_ifast)
903
                    last_index = dct_quantize(s, block[i], i, s->qscale);
904
                else
905
                    last_index = dct_quantize_mmx(s, block[i], i, s->qscale);
906
                s->block_last_index[i] = last_index;
907
            }
908

    
909
            /* huffman encode */
910
            switch(s->out_format) {
911
            case FMT_MPEG1:
912
                mpeg1_encode_mb(s, block, motion_x, motion_y);
913
                break;
914
            case FMT_H263:
915
                if (s->h263_msmpeg4)
916
                    msmpeg4_encode_mb(s, block, motion_x, motion_y);
917
                else
918
                    h263_encode_mb(s, block, motion_x, motion_y);
919
                break;
920
            case FMT_MJPEG:
921
                mjpeg_encode_mb(s, block);
922
                break;
923
            }
924

    
925
            /* decompress blocks so that we keep the state of the decoder */
926
            s->mv[0][0][0] = motion_x;
927
            s->mv[0][0][1] = motion_y;
928

    
929
            MPV_decode_mb(s, block);
930
        }
931
    }
932
}
933

    
934
static int dct_quantize(MpegEncContext *s, 
935
                        DCTELEM *block, int n,
936
                        int qscale)
937
{
938
    int i, j, level, last_non_zero, q;
939
    const int *qmat;
940

    
941
    av_fdct (block);
942

    
943
    if (s->mb_intra) {
944
        if (n < 4)
945
            q = s->y_dc_scale;
946
        else
947
            q = s->c_dc_scale;
948
        q = q << 3;
949
        
950
        /* note: block[0] is assumed to be positive */
951
        block[0] = (block[0] + (q >> 1)) / q;
952
        i = 1;
953
        last_non_zero = 0;
954
        if (s->out_format == FMT_H263) {
955
            qmat = s->q_non_intra_matrix;
956
        } else {
957
            qmat = s->q_intra_matrix;
958
        }
959
    } else {
960
        i = 0;
961
        last_non_zero = -1;
962
        qmat = s->q_non_intra_matrix;
963
    }
964

    
965
    for(;i<64;i++) {
966
        j = zigzag_direct[i];
967
        level = block[j];
968
        level = level * qmat[j];
969
#ifdef PARANOID
970
        {
971
            static int count = 0;
972
            int level1, level2, qmat1;
973
            double val;
974
            if (qmat == s->q_non_intra_matrix) {
975
                qmat1 = default_non_intra_matrix[j] * s->qscale;
976
            } else {
977
                qmat1 = default_intra_matrix[j] * s->qscale;
978
            }
979
            if (av_fdct != jpeg_fdct_ifast)
980
                val = ((double)block[j] * 8.0) / (double)qmat1;
981
            else
982
                val = ((double)block[j] * 8.0 * 2048.0) / 
983
                    ((double)qmat1 * aanscales[j]);
984
            level1 = (int)val;
985
            level2 = level / (1 << (QMAT_SHIFT - 3));
986
            if (level1 != level2) {
987
                fprintf(stderr, "%d: quant error qlevel=%d wanted=%d level=%d qmat1=%d qmat=%d wantedf=%0.6f\n", 
988
                        count, level2, level1, block[j], qmat1, qmat[j],
989
                        val);
990
                count++;
991
            }
992

    
993
        }
994
#endif
995
        /* XXX: slight error for the low range. Test should be equivalent to
996
           (level <= -(1 << (QMAT_SHIFT - 3)) || level >= (1 <<
997
           (QMAT_SHIFT - 3)))
998
        */
999
        if (((level << (31 - (QMAT_SHIFT - 3))) >> (31 - (QMAT_SHIFT - 3))) != 
1000
            level) {
1001
            level = level / (1 << (QMAT_SHIFT - 3));
1002
            /* XXX: currently, this code is not optimal. the range should be:
1003
               mpeg1: -255..255
1004
               mpeg2: -2048..2047
1005
               h263:  -128..127
1006
               mpeg4: -2048..2047
1007
            */
1008
            if (level > 127)
1009
                level = 127;
1010
            else if (level < -128)
1011
                level = -128;
1012
            block[j] = level;
1013
            last_non_zero = i;
1014
        } else {
1015
            block[j] = 0;
1016
        }
1017
    }
1018
    return last_non_zero;
1019
}
1020

    
1021
static int dct_quantize_mmx(MpegEncContext *s, 
1022
                            DCTELEM *block, int n,
1023
                            int qscale)
1024
{
1025
    int i, j, level, last_non_zero, q;
1026
    const int *qmat;
1027

    
1028
    av_fdct (block);
1029

    
1030
    if (s->mb_intra) {
1031
        if (n < 4)
1032
            q = s->y_dc_scale;
1033
        else
1034
            q = s->c_dc_scale;
1035
        
1036
        /* note: block[0] is assumed to be positive */
1037
        block[0] = (block[0] + (q >> 1)) / q;
1038
        i = 1;
1039
        last_non_zero = 0;
1040
        if (s->out_format == FMT_H263) {
1041
            qmat = s->q_non_intra_matrix;
1042
        } else {
1043
            qmat = s->q_intra_matrix;
1044
        }
1045
    } else {
1046
        i = 0;
1047
        last_non_zero = -1;
1048
        qmat = s->q_non_intra_matrix;
1049
    }
1050

    
1051
    for(;i<64;i++) {
1052
        j = zigzag_direct[i];
1053
        level = block[j];
1054
        level = level * qmat[j];
1055
        /* XXX: slight error for the low range. Test should be equivalent to
1056
           (level <= -(1 << (QMAT_SHIFT_MMX - 3)) || level >= (1 <<
1057
           (QMAT_SHIFT_MMX - 3)))
1058
        */
1059
        if (((level << (31 - (QMAT_SHIFT_MMX - 3))) >> (31 - (QMAT_SHIFT_MMX - 3))) != 
1060
            level) {
1061
            level = level / (1 << (QMAT_SHIFT_MMX - 3));
1062
            /* XXX: currently, this code is not optimal. the range should be:
1063
               mpeg1: -255..255
1064
               mpeg2: -2048..2047
1065
               h263:  -128..127
1066
               mpeg4: -2048..2047
1067
            */
1068
            if (level > 127)
1069
                level = 127;
1070
            else if (level < -128)
1071
                level = -128;
1072
            block[j] = level;
1073
            last_non_zero = i;
1074
        } else {
1075
            block[j] = 0;
1076
        }
1077
    }
1078
    return last_non_zero;
1079
}
1080

    
1081
static void dct_unquantize(MpegEncContext *s, 
1082
                           DCTELEM *block, int n, int qscale)
1083
{
1084
    int i, level;
1085
    const UINT16 *quant_matrix;
1086

    
1087
    if (s->mb_intra) {
1088
        if (n < 4) 
1089
            block[0] = block[0] * s->y_dc_scale;
1090
        else
1091
            block[0] = block[0] * s->c_dc_scale;
1092
        if (s->out_format == FMT_H263) {
1093
            i = 1;
1094
            goto unquant_even;
1095
        }
1096
        /* XXX: only mpeg1 */
1097
        quant_matrix = s->intra_matrix;
1098
        for(i=1;i<64;i++) {
1099
            level = block[i];
1100
            if (level) {
1101
                if (level < 0) {
1102
                    level = -level;
1103
                    level = (int)(level * qscale * quant_matrix[i]) >> 3;
1104
                    level = (level - 1) | 1;
1105
                    level = -level;
1106
                } else {
1107
                    level = (int)(level * qscale * quant_matrix[i]) >> 3;
1108
                    level = (level - 1) | 1;
1109
                }
1110
#ifdef PARANOID
1111
                if (level < -2048 || level > 2047)
1112
                    fprintf(stderr, "unquant error %d %d\n", i, level);
1113
#endif
1114
                block[i] = level;
1115
            }
1116
        }
1117
    } else {
1118
        i = 0;
1119
    unquant_even:
1120
        quant_matrix = s->non_intra_matrix;
1121
        for(;i<64;i++) {
1122
            level = block[i];
1123
            if (level) {
1124
                if (level < 0) {
1125
                    level = -level;
1126
                    level = (((level << 1) + 1) * qscale *
1127
                             ((int) (quant_matrix[i]))) >> 4;
1128
                    level = (level - 1) | 1;
1129
                    level = -level;
1130
                } else {
1131
                    level = (((level << 1) + 1) * qscale *
1132
                             ((int) (quant_matrix[i]))) >> 4;
1133
                    level = (level - 1) | 1;
1134
                }
1135
#ifdef PARANOID
1136
                if (level < -2048 || level > 2047)
1137
                    fprintf(stderr, "unquant error %d %d\n", i, level);
1138
#endif
1139
                block[i] = level;
1140
            }
1141
        }
1142
    }
1143
}
1144
                         
1145

    
1146
/* rate control */
1147

    
1148
/* an I frame is I_FRAME_SIZE_RATIO bigger than a P frame */
1149
#define I_FRAME_SIZE_RATIO 3.0
1150
#define QSCALE_K           20
1151

    
1152
static void rate_control_init(MpegEncContext *s)
1153
{
1154
    s->wanted_bits = 0;
1155

    
1156
    if (s->intra_only) {
1157
        s->I_frame_bits = ((INT64)s->bit_rate * FRAME_RATE_BASE) / s->frame_rate;
1158
        s->P_frame_bits = s->I_frame_bits;
1159
    } else {
1160
        s->P_frame_bits = (int) ((float)(s->gop_size * s->bit_rate) / 
1161
                                 (float)((float)s->frame_rate / FRAME_RATE_BASE * (I_FRAME_SIZE_RATIO + s->gop_size - 1)));
1162
        s->I_frame_bits = (int)(s->P_frame_bits * I_FRAME_SIZE_RATIO);
1163
    }
1164
    
1165
#if defined(DEBUG)
1166
    printf("I_frame_size=%d P_frame_size=%d\n",
1167
           s->I_frame_bits, s->P_frame_bits);
1168
#endif
1169
}
1170

    
1171

    
1172
/*
1173
 * This heuristic is rather poor, but at least we do not have to
1174
 * change the qscale at every macroblock.
1175
 */
1176
static int rate_estimate_qscale(MpegEncContext *s)
1177
{
1178
    long long total_bits = s->total_bits;
1179
    float q;
1180
    int qscale, diff, qmin;
1181

    
1182
    if (s->pict_type == I_TYPE) {
1183
        s->wanted_bits += s->I_frame_bits;
1184
    } else {
1185
        s->wanted_bits += s->P_frame_bits;
1186
    }
1187
    diff = s->wanted_bits - total_bits;
1188
    q = 31.0 - (float)diff / (QSCALE_K * s->mb_height * s->mb_width);
1189
    /* adjust for I frame */
1190
    if (s->pict_type == I_TYPE && !s->intra_only) {
1191
        q /= I_FRAME_SIZE_RATIO;
1192
    }
1193

    
1194
    /* using a too small Q scale leeds to problems in mpeg1 and h263
1195
       because AC coefficients are clamped to 255 or 127 */
1196
    qmin = 3;
1197
    if (q < qmin)
1198
        q = qmin;
1199
    else if (q > 31)
1200
        q = 31;
1201
    qscale = (int)(q + 0.5);
1202
#if defined(DEBUG)
1203
    printf("%d: total=%Ld br=%0.1f diff=%d qest=%0.1f\n", 
1204
           s->picture_number, 
1205
           total_bits, 
1206
           (float)s->frame_rate / FRAME_RATE_BASE * 
1207
           total_bits / s->picture_number, 
1208
           diff, q);
1209
#endif
1210
    return qscale;
1211
}
1212

    
1213
AVCodec mpeg1video_encoder = {
1214
    "mpeg1video",
1215
    CODEC_TYPE_VIDEO,
1216
    CODEC_ID_MPEG1VIDEO,
1217
    sizeof(MpegEncContext),
1218
    MPV_encode_init,
1219
    MPV_encode_picture,
1220
    MPV_encode_end,
1221
};
1222

    
1223
AVCodec h263_encoder = {
1224
    "h263",
1225
    CODEC_TYPE_VIDEO,
1226
    CODEC_ID_H263,
1227
    sizeof(MpegEncContext),
1228
    MPV_encode_init,
1229
    MPV_encode_picture,
1230
    MPV_encode_end,
1231
};
1232

    
1233
AVCodec h263p_encoder = {
1234
    "h263p",
1235
    CODEC_TYPE_VIDEO,
1236
    CODEC_ID_H263P,
1237
    sizeof(MpegEncContext),
1238
    MPV_encode_init,
1239
    MPV_encode_picture,
1240
    MPV_encode_end,
1241
};
1242

    
1243
AVCodec rv10_encoder = {
1244
    "rv10",
1245
    CODEC_TYPE_VIDEO,
1246
    CODEC_ID_RV10,
1247
    sizeof(MpegEncContext),
1248
    MPV_encode_init,
1249
    MPV_encode_picture,
1250
    MPV_encode_end,
1251
};
1252

    
1253
AVCodec mjpeg_encoder = {
1254
    "mjpeg",
1255
    CODEC_TYPE_VIDEO,
1256
    CODEC_ID_MJPEG,
1257
    sizeof(MpegEncContext),
1258
    MPV_encode_init,
1259
    MPV_encode_picture,
1260
    MPV_encode_end,
1261
};
1262

    
1263
AVCodec opendivx_encoder = {
1264
    "opendivx",
1265
    CODEC_TYPE_VIDEO,
1266
    CODEC_ID_OPENDIVX,
1267
    sizeof(MpegEncContext),
1268
    MPV_encode_init,
1269
    MPV_encode_picture,
1270
    MPV_encode_end,
1271
};
1272

    
1273
AVCodec msmpeg4_encoder = {
1274
    "msmpeg4",
1275
    CODEC_TYPE_VIDEO,
1276
    CODEC_ID_MSMPEG4,
1277
    sizeof(MpegEncContext),
1278
    MPV_encode_init,
1279
    MPV_encode_picture,
1280
    MPV_encode_end,
1281
};