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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
#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 void draw_edges_c(UINT8 *buf, int wrap, int width, int height, int w);
39
static int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale);
40

    
41
int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale)= dct_quantize_c;
42
void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w)= draw_edges_c;
43

    
44
#define EDGE_WIDTH 16
45

    
46
/* enable all paranoid tests for rounding, overflows, etc... */
47
//#define PARANOID
48

    
49
//#define DEBUG
50

    
51
/* for jpeg fast DCT */
52
#define CONST_BITS 14
53

    
54
static const unsigned short aanscales[64] = {
55
    /* precomputed values scaled up by 14 bits */
56
    16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
57
    22725, 31521, 29692, 26722, 22725, 17855, 12299,  6270,
58
    21407, 29692, 27969, 25172, 21407, 16819, 11585,  5906,
59
    19266, 26722, 25172, 22654, 19266, 15137, 10426,  5315,
60
    16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
61
    12873, 17855, 16819, 15137, 12873, 10114,  6967,  3552,
62
    8867, 12299, 11585, 10426,  8867,  6967,  4799,  2446,
63
    4520,  6270,  5906,  5315,  4520,  3552,  2446,  1247
64
};
65

    
66
static UINT8 h263_chroma_roundtab[16] = {
67
    0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
68
};
69

    
70
static UINT16 default_mv_penalty[MAX_FCODE][MAX_MV*2+1];
71
static UINT8 default_fcode_tab[MAX_MV*2+1];
72

    
73
/* default motion estimation */
74
int motion_estimation_method = ME_LOG;
75

    
76
extern UINT8 zigzag_end[64];
77

    
78
static void convert_matrix(int *qmat, UINT16 *qmat16, const UINT16 *quant_matrix, int qscale)
79
{
80
    int i;
81

    
82
    if (av_fdct == jpeg_fdct_ifast) {
83
        for(i=0;i<64;i++) {
84
            /* 16 <= qscale * quant_matrix[i] <= 7905 */
85
            /* 19952         <= aanscales[i] * qscale * quant_matrix[i]           <= 249205026 */
86
            /* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
87
            /* 3444240       >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
88
            
89
            qmat[block_permute_op(i)] = (int)((UINT64_C(1) << (QMAT_SHIFT + 11)) / 
90
                            (aanscales[i] * qscale * quant_matrix[block_permute_op(i)]));
91
        }
92
    } else {
93
        for(i=0;i<64;i++) {
94
            /* We can safely suppose that 16 <= quant_matrix[i] <= 255
95
               So 16           <= qscale * quant_matrix[i]             <= 7905
96
               so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
97
               so 32768        >= (1<<19) / (qscale * quant_matrix[i]) >= 67
98
            */
99
            qmat[i]   = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
100
            qmat16[i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[block_permute_op(i)]);
101
        }
102
    }
103
}
104

    
105
/* init common structure for both encoder and decoder */
106
int MPV_common_init(MpegEncContext *s)
107
{
108
    int c_size, i;
109
    UINT8 *pict;
110

    
111
    if (s->out_format == FMT_H263) 
112
        s->dct_unquantize = dct_unquantize_h263_c;
113
    else
114
        s->dct_unquantize = dct_unquantize_mpeg1_c;
115
        
116
#ifdef HAVE_MMX
117
    MPV_common_init_mmx(s);
118
#endif
119
    s->mb_width = (s->width + 15) / 16;
120
    s->mb_height = (s->height + 15) / 16;
121
    s->mb_num = s->mb_width * s->mb_height;
122
    s->linesize = s->mb_width * 16 + 2 * EDGE_WIDTH;
123

    
124
    for(i=0;i<3;i++) {
125
        int w, h, shift, pict_start;
126

    
127
        w = s->linesize;
128
        h = s->mb_height * 16 + 2 * EDGE_WIDTH;
129
        shift = (i == 0) ? 0 : 1;
130
        c_size = (w >> shift) * (h >> shift);
131
        pict_start = (w >> shift) * (EDGE_WIDTH >> shift) + (EDGE_WIDTH >> shift);
132

    
133
        pict = av_mallocz(c_size);
134
        if (pict == NULL)
135
            goto fail;
136
        s->last_picture_base[i] = pict;
137
        s->last_picture[i] = pict + pict_start;
138
    
139
        pict = av_mallocz(c_size);
140
        if (pict == NULL)
141
            goto fail;
142
        s->next_picture_base[i] = pict;
143
        s->next_picture[i] = pict + pict_start;
144

    
145
        if (s->has_b_frames) {
146
            pict = av_mallocz(c_size);
147
            if (pict == NULL) 
148
                goto fail;
149
            s->aux_picture_base[i] = pict;
150
            s->aux_picture[i] = pict + pict_start;
151
        }
152
    }
153
    
154
    if (s->encoding) {
155
        /* Allocate MB type table */
156
        s->mb_type = av_mallocz(s->mb_num * sizeof(char));
157
        if (s->mb_type == NULL) {
158
            perror("malloc");
159
            goto fail;
160
        }
161
        
162
        s->mb_var = av_mallocz(s->mb_num * sizeof(INT16));
163
        if (s->mb_var == NULL) {
164
            perror("malloc");
165
            goto fail;
166
        }
167
        /* Allocate MV table */
168
        /* By now we just have one MV per MB */
169
        s->mv_table[0] = av_mallocz(s->mb_num * sizeof(INT16));
170
        s->mv_table[1] = av_mallocz(s->mb_num * sizeof(INT16));
171
        if (s->mv_table[1] == NULL || s->mv_table[0] == NULL) {
172
            perror("malloc");
173
            goto fail;
174
        }
175
    }
176
    
177
    if (s->out_format == FMT_H263) {
178
        int size;
179
        /* MV prediction */
180
        size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
181
        s->motion_val = malloc(size * 2 * sizeof(INT16));
182
        if (s->motion_val == NULL)
183
            goto fail;
184
        memset(s->motion_val, 0, size * 2 * sizeof(INT16));
185
    }
186

    
187
    if (s->h263_pred || s->h263_plus) {
188
        int y_size, c_size, i, size;
189
        
190
        /* dc values */
191

    
192
        y_size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
193
        c_size = (s->mb_width + 2) * (s->mb_height + 2);
194
        size = y_size + 2 * c_size;
195
        s->dc_val[0] = malloc(size * sizeof(INT16));
196
        if (s->dc_val[0] == NULL)
197
            goto fail;
198
        s->dc_val[1] = s->dc_val[0] + y_size;
199
        s->dc_val[2] = s->dc_val[1] + c_size;
200
        for(i=0;i<size;i++)
201
            s->dc_val[0][i] = 1024;
202

    
203
        /* ac values */
204
        s->ac_val[0] = av_mallocz(size * sizeof(INT16) * 16);
205
        if (s->ac_val[0] == NULL)
206
            goto fail;
207
        s->ac_val[1] = s->ac_val[0] + y_size;
208
        s->ac_val[2] = s->ac_val[1] + c_size;
209
        
210
        /* cbp values */
211
        s->coded_block = av_mallocz(y_size);
212
        if (!s->coded_block)
213
            goto fail;
214

    
215
        /* which mb is a intra block */
216
        s->mbintra_table = av_mallocz(s->mb_num);
217
        if (!s->mbintra_table)
218
            goto fail;
219
        memset(s->mbintra_table, 1, s->mb_num);
220
    }
221
    /* default structure is frame */
222
    s->picture_structure = PICT_FRAME;
223

    
224
    /* init macroblock skip table */
225
    if (!s->encoding) {
226
        s->mbskip_table = av_mallocz(s->mb_num);
227
        if (!s->mbskip_table)
228
            goto fail;
229
    }
230

    
231
    s->context_initialized = 1;
232
    return 0;
233
 fail:
234
    MPV_common_end(s);
235
    return -1;
236
}
237

    
238
/* init common structure for both encoder and decoder */
239
void MPV_common_end(MpegEncContext *s)
240
{
241
    int i;
242

    
243
    if (s->mb_type)
244
        free(s->mb_type);
245
    if (s->mb_var)
246
        free(s->mb_var);
247
    if (s->mv_table[0])
248
        free(s->mv_table[0]);
249
    if (s->mv_table[1])
250
        free(s->mv_table[1]);
251
    if (s->motion_val)
252
        free(s->motion_val);
253
    if (s->dc_val[0])
254
        free(s->dc_val[0]);
255
    if (s->ac_val[0])
256
        free(s->ac_val[0]);
257
    if (s->coded_block)
258
        free(s->coded_block);
259
    if (s->mbintra_table)
260
        free(s->mbintra_table);
261

    
262
    if (s->mbskip_table)
263
        free(s->mbskip_table);
264
    for(i=0;i<3;i++) {
265
        if (s->last_picture_base[i])
266
            free(s->last_picture_base[i]);
267
        if (s->next_picture_base[i])
268
            free(s->next_picture_base[i]);
269
        if (s->has_b_frames)
270
            free(s->aux_picture_base[i]);
271
    }
272
    s->context_initialized = 0;
273
}
274

    
275
/* init video encoder */
276
int MPV_encode_init(AVCodecContext *avctx)
277
{
278
    MpegEncContext *s = avctx->priv_data;
279
    int i;
280

    
281
    s->bit_rate = avctx->bit_rate;
282
    s->bit_rate_tolerance = avctx->bit_rate_tolerance;
283
    s->frame_rate = avctx->frame_rate;
284
    s->width = avctx->width;
285
    s->height = avctx->height;
286
    s->gop_size = avctx->gop_size;
287
    s->rtp_mode = avctx->rtp_mode;
288
    s->rtp_payload_size = avctx->rtp_payload_size;
289
    if (avctx->rtp_callback)
290
        s->rtp_callback = avctx->rtp_callback;
291
    s->qmin= avctx->qmin;
292
    s->qmax= avctx->qmax;
293
    s->max_qdiff= avctx->max_qdiff;
294
    s->qcompress= avctx->qcompress;
295
    s->qblur= avctx->qblur;
296
    s->avctx = avctx;
297
    s->aspect_ratio_info= avctx->aspect_ratio_info;
298
    
299
    if (s->gop_size <= 1) {
300
        s->intra_only = 1;
301
        s->gop_size = 12;
302
    } else {
303
        s->intra_only = 0;
304
    }
305
    s->full_search = motion_estimation_method;
306

    
307
    s->fixed_qscale = (avctx->flags & CODEC_FLAG_QSCALE);
308
    
309
    switch(avctx->codec->id) {
310
    case CODEC_ID_MPEG1VIDEO:
311
        s->out_format = FMT_MPEG1;
312
        break;
313
    case CODEC_ID_MJPEG:
314
        s->out_format = FMT_MJPEG;
315
        s->intra_only = 1; /* force intra only for jpeg */
316
        s->mjpeg_write_tables = 1; /* write all tables */
317
        s->mjpeg_vsample[0] = 2; /* set up default sampling factors */
318
        s->mjpeg_vsample[1] = 1; /* the only currently supported values */
319
        s->mjpeg_vsample[2] = 1; 
320
        s->mjpeg_hsample[0] = 2; 
321
        s->mjpeg_hsample[1] = 1; 
322
        s->mjpeg_hsample[2] = 1; 
323
        if (mjpeg_init(s) < 0)
324
            return -1;
325
        break;
326
    case CODEC_ID_H263:
327
        if (h263_get_picture_format(s->width, s->height) == 7) {
328
            printf("Input picture size isn't suitable for h263 codec! try h263+\n");
329
            return -1;
330
        }
331
        s->out_format = FMT_H263;
332
        break;
333
    case CODEC_ID_H263P:
334
        s->out_format = FMT_H263;
335
        s->rtp_mode = 1;
336
        s->rtp_payload_size = 1200; 
337
        s->h263_plus = 1;
338
        s->unrestricted_mv = 1;
339
        
340
        /* These are just to be sure */
341
        s->umvplus = 0;
342
        s->umvplus_dec = 0;
343
        break;
344
    case CODEC_ID_RV10:
345
        s->out_format = FMT_H263;
346
        s->h263_rv10 = 1;
347
        break;
348
    case CODEC_ID_MPEG4:
349
        s->out_format = FMT_H263;
350
        s->h263_pred = 1;
351
        s->unrestricted_mv = 1;
352
        break;
353
    case CODEC_ID_MSMPEG4:
354
        s->out_format = FMT_H263;
355
        s->h263_msmpeg4 = 1;
356
        s->h263_pred = 1;
357
        s->unrestricted_mv = 1;
358
        break;
359
    default:
360
        return -1;
361
    }
362

    
363
    { /* set up some save defaults, some codecs might override them later */
364
        static int done=0;
365
        if(!done){
366
            int i;
367
            done=1;
368
            memset(default_mv_penalty, 0, sizeof(UINT16)*MAX_FCODE*(2*MAX_MV+1));
369
            memset(default_fcode_tab , 0, sizeof(UINT8)*(2*MAX_MV+1));
370

    
371
            for(i=-16; i<16; i++){
372
                default_fcode_tab[i + MAX_MV]= 1;
373
            }
374
        }
375
    }
376
    s->mv_penalty= default_mv_penalty;
377
    s->fcode_tab= default_fcode_tab;
378

    
379
    if (s->out_format == FMT_H263)
380
        h263_encode_init(s);
381
    else if (s->out_format == FMT_MPEG1)
382
        mpeg1_encode_init(s);
383

    
384
    s->encoding = 1;
385

    
386
    /* init */
387
    if (MPV_common_init(s) < 0)
388
        return -1;
389
    
390
    /* init default q matrix */
391
    for(i=0;i<64;i++) {
392
        s->intra_matrix[i] = default_intra_matrix[i];
393
        s->non_intra_matrix[i] = default_non_intra_matrix[i];
394
    }
395

    
396
    /* rate control init */
397
    rate_control_init(s);
398

    
399
    s->picture_number = 0;
400
    s->picture_in_gop_number = 0;
401
    s->fake_picture_number = 0;
402
    /* motion detector init */
403
    s->f_code = 1;
404

    
405
    return 0;
406
}
407

    
408
int MPV_encode_end(AVCodecContext *avctx)
409
{
410
    MpegEncContext *s = avctx->priv_data;
411

    
412
#ifdef STATS
413
    print_stats();
414
#endif
415
    MPV_common_end(s);
416
    if (s->out_format == FMT_MJPEG)
417
        mjpeg_close(s);
418
      
419
    return 0;
420
}
421

    
422
/* draw the edges of width 'w' of an image of size width, height */
423
static void draw_edges_c(UINT8 *buf, int wrap, int width, int height, int w)
424
{
425
    UINT8 *ptr, *last_line;
426
    int i;
427

    
428
    last_line = buf + (height - 1) * wrap;
429
    for(i=0;i<w;i++) {
430
        /* top and bottom */
431
        memcpy(buf - (i + 1) * wrap, buf, width);
432
        memcpy(last_line + (i + 1) * wrap, last_line, width);
433
    }
434
    /* left and right */
435
    ptr = buf;
436
    for(i=0;i<height;i++) {
437
        memset(ptr - w, ptr[0], w);
438
        memset(ptr + width, ptr[width-1], w);
439
        ptr += wrap;
440
    }
441
    /* corners */
442
    for(i=0;i<w;i++) {
443
        memset(buf - (i + 1) * wrap - w, buf[0], w); /* top left */
444
        memset(buf - (i + 1) * wrap + width, buf[width-1], w); /* top right */
445
        memset(last_line + (i + 1) * wrap - w, last_line[0], w); /* top left */
446
        memset(last_line + (i + 1) * wrap + width, last_line[width-1], w); /* top right */
447
    }
448
}
449

    
450
/* generic function for encode/decode called before a frame is coded/decoded */
451
void MPV_frame_start(MpegEncContext *s)
452
{
453
    int i;
454
    UINT8 *tmp;
455

    
456
    s->mb_skiped = 0;
457
    if (s->pict_type == B_TYPE) {
458
        for(i=0;i<3;i++) {
459
            s->current_picture[i] = s->aux_picture[i];
460
        }
461
    } else {
462
        s->last_non_b_pict_type= s->pict_type;
463
        for(i=0;i<3;i++) {
464
            /* swap next and last */
465
            tmp = s->last_picture[i];
466
            s->last_picture[i] = s->next_picture[i];
467
            s->next_picture[i] = tmp;
468
            s->current_picture[i] = tmp;
469
        }
470
    }
471
}
472

    
473
/* generic function for encode/decode called after a frame has been coded/decoded */
474
void MPV_frame_end(MpegEncContext *s)
475
{
476
    /* draw edge for correct motion prediction if outside */
477
    if (s->pict_type != B_TYPE && !s->intra_only) {
478
      if(s->avctx==NULL || s->avctx->codec->id!=CODEC_ID_MPEG4 || s->divx_version==500){
479
        draw_edges(s->current_picture[0], s->linesize, s->mb_width*16, s->mb_height*16, EDGE_WIDTH);
480
        draw_edges(s->current_picture[1], s->linesize/2, s->mb_width*8, s->mb_height*8, EDGE_WIDTH/2);
481
        draw_edges(s->current_picture[2], s->linesize/2, s->mb_width*8, s->mb_height*8, EDGE_WIDTH/2);
482
      }else{
483
        /* mpeg4? / opendivx / xvid */
484
        draw_edges(s->current_picture[0], s->linesize, s->width, s->height, EDGE_WIDTH);
485
        draw_edges(s->current_picture[1], s->linesize/2, s->width/2, s->height/2, EDGE_WIDTH/2);
486
        draw_edges(s->current_picture[2], s->linesize/2, s->width/2, s->height/2, EDGE_WIDTH/2);
487
      }
488
    }
489
    emms_c();
490
}
491

    
492
int MPV_encode_picture(AVCodecContext *avctx,
493
                       unsigned char *buf, int buf_size, void *data)
494
{
495
    MpegEncContext *s = avctx->priv_data;
496
    AVPicture *pict = data;
497
    int i, j;
498

    
499
    if (s->fixed_qscale) 
500
        s->qscale = avctx->quality;
501

    
502
    init_put_bits(&s->pb, buf, buf_size, NULL, NULL);
503

    
504
    if (!s->intra_only) {
505
        /* first picture of GOP is intra */
506
        if (s->picture_in_gop_number >= s->gop_size){
507
            s->picture_in_gop_number=0;
508
            s->pict_type = I_TYPE;
509
        }else
510
            s->pict_type = P_TYPE;
511
    } else {
512
        s->pict_type = I_TYPE;
513
    }
514
    
515
    MPV_frame_start(s);
516
    
517
    for(i=0;i<3;i++) {
518
        UINT8 *src = pict->data[i];
519
        UINT8 *dest = s->current_picture[i];
520
        int src_wrap = pict->linesize[i];
521
        int dest_wrap = s->linesize;
522
        int w = s->width;
523
        int h = s->height;
524

    
525
        if (i >= 1) {
526
            dest_wrap >>= 1;
527
            w >>= 1;
528
            h >>= 1;
529
        }
530

    
531
        if(dest_wrap==src_wrap){
532
            s->new_picture[i] = pict->data[i];
533
        } else {
534
            for(j=0;j<h;j++) {
535
                memcpy(dest, src, w);
536
                dest += dest_wrap;
537
                src += src_wrap;
538
            }
539
            s->new_picture[i] = s->current_picture[i];
540
            }
541
    }
542

    
543
    encode_picture(s, s->picture_number);
544
    avctx->key_frame = (s->pict_type == I_TYPE);
545
    avctx->header_bits = s->header_bits;
546
    avctx->mv_bits     = s->mv_bits;
547
    avctx->misc_bits   = s->misc_bits;
548
    avctx->i_tex_bits  = s->i_tex_bits;
549
    avctx->p_tex_bits  = s->p_tex_bits;
550
    avctx->i_count     = s->i_count;
551
    avctx->p_count     = s->p_count;
552
    avctx->skip_count  = s->skip_count;
553

    
554
    MPV_frame_end(s);
555
    s->picture_number++;
556
    s->picture_in_gop_number++;
557

    
558
    if (s->out_format == FMT_MJPEG)
559
        mjpeg_picture_trailer(s);
560

    
561
    flush_put_bits(&s->pb);
562
    s->last_frame_bits= s->frame_bits;
563
    s->frame_bits  = (pbBufPtr(&s->pb) - s->pb.buf) * 8;
564
    s->total_bits += s->frame_bits;
565
    avctx->frame_bits  = s->frame_bits;
566
//printf("fcode: %d, type: %d, head: %d, mv: %d, misc: %d, frame: %d, itex: %d, ptex: %d\n", 
567
//s->f_code, avctx->key_frame, s->header_bits, s->mv_bits, s->misc_bits, s->frame_bits, s->i_tex_bits, s->p_tex_bits);
568

    
569
    avctx->quality = s->qscale;
570
    if (avctx->get_psnr) {
571
        /* At this point pict->data should have the original frame   */
572
        /* an s->current_picture should have the coded/decoded frame */
573
        get_psnr(pict->data, s->current_picture,
574
                 pict->linesize, s->linesize, avctx);
575
    }
576
    return pbBufPtr(&s->pb) - s->pb.buf;
577
}
578

    
579
static inline int clip(int a, int amin, int amax)
580
{
581
    if (a < amin)
582
        return amin;
583
    else if (a > amax)
584
        return amax;
585
    else
586
        return a;
587
}
588

    
589
static inline void gmc1_motion(MpegEncContext *s,
590
                               UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
591
                               int dest_offset,
592
                               UINT8 **ref_picture, int src_offset,
593
                               int h)
594
{
595
    UINT8 *ptr;
596
    int dxy, offset, mx, my, src_x, src_y, height, linesize;
597
    int motion_x, motion_y;
598

    
599
    if(s->real_sprite_warping_points>1) printf("more than 1 warp point isnt supported\n");
600
    motion_x= s->sprite_offset[0][0];
601
    motion_y= s->sprite_offset[0][1];
602
    src_x = s->mb_x * 16 + (motion_x >> (s->sprite_warping_accuracy+1));
603
    src_y = s->mb_y * 16 + (motion_y >> (s->sprite_warping_accuracy+1));
604
    motion_x<<=(3-s->sprite_warping_accuracy);
605
    motion_y<<=(3-s->sprite_warping_accuracy);
606
    src_x = clip(src_x, -16, s->width);
607
    if (src_x == s->width)
608
        motion_x =0;
609
    src_y = clip(src_y, -16, s->height);
610
    if (src_y == s->height)
611
        motion_y =0;
612
    
613
    linesize = s->linesize;
614
    ptr = ref_picture[0] + (src_y * linesize) + src_x + src_offset;
615

    
616
    dest_y+=dest_offset;
617
    gmc1(dest_y  , ptr  , linesize, h, motion_x&15, motion_y&15, s->no_rounding);
618
    gmc1(dest_y+8, ptr+8, linesize, h, motion_x&15, motion_y&15, s->no_rounding);
619

    
620
    motion_x= s->sprite_offset[1][0];
621
    motion_y= s->sprite_offset[1][1];
622
    src_x = s->mb_x * 8 + (motion_x >> (s->sprite_warping_accuracy+1));
623
    src_y = s->mb_y * 8 + (motion_y >> (s->sprite_warping_accuracy+1));
624
    motion_x<<=(3-s->sprite_warping_accuracy);
625
    motion_y<<=(3-s->sprite_warping_accuracy);
626
    src_x = clip(src_x, -8, s->width>>1);
627
    if (src_x == s->width>>1)
628
        motion_x =0;
629
    src_y = clip(src_y, -8, s->height>>1);
630
    if (src_y == s->height>>1)
631
        motion_y =0;
632

    
633
    offset = (src_y * linesize>>1) + src_x + (src_offset>>1);
634
    ptr = ref_picture[1] + offset;
635
    gmc1(dest_cb + (dest_offset>>1), ptr, linesize>>1, h>>1, motion_x&15, motion_y&15, s->no_rounding);
636
    ptr = ref_picture[2] + offset;
637
    gmc1(dest_cr + (dest_offset>>1), ptr, linesize>>1, h>>1, motion_x&15, motion_y&15, s->no_rounding);
638
    
639
    return;
640
}
641

    
642
/* apply one mpeg motion vector to the three components */
643
static inline void mpeg_motion(MpegEncContext *s,
644
                               UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
645
                               int dest_offset,
646
                               UINT8 **ref_picture, int src_offset,
647
                               int field_based, op_pixels_func *pix_op,
648
                               int motion_x, int motion_y, int h)
649
{
650
    UINT8 *ptr;
651
    int dxy, offset, mx, my, src_x, src_y, height, linesize;
652
if(s->quarter_sample)
653
{
654
    motion_x>>=1;
655
    motion_y>>=1;
656
}
657
    dxy = ((motion_y & 1) << 1) | (motion_x & 1);
658
    src_x = s->mb_x * 16 + (motion_x >> 1);
659
    src_y = s->mb_y * (16 >> field_based) + (motion_y >> 1);
660
                
661
    /* WARNING: do no forget half pels */
662
    height = s->height >> field_based;
663
    src_x = clip(src_x, -16, s->width);
664
    if (src_x == s->width)
665
        dxy &= ~1;
666
    src_y = clip(src_y, -16, height);
667
    if (src_y == height)
668
        dxy &= ~2;
669
    linesize = s->linesize << field_based;
670
    ptr = ref_picture[0] + (src_y * linesize) + (src_x) + src_offset;
671
    dest_y += dest_offset;
672
    pix_op[dxy](dest_y, ptr, linesize, h);
673
    pix_op[dxy](dest_y + 8, ptr + 8, linesize, h);
674

    
675
    if (s->out_format == FMT_H263) {
676
        dxy = 0;
677
        if ((motion_x & 3) != 0)
678
            dxy |= 1;
679
        if ((motion_y & 3) != 0)
680
            dxy |= 2;
681
        mx = motion_x >> 2;
682
        my = motion_y >> 2;
683
    } else {
684
        mx = motion_x / 2;
685
        my = motion_y / 2;
686
        dxy = ((my & 1) << 1) | (mx & 1);
687
        mx >>= 1;
688
        my >>= 1;
689
    }
690
    
691
    src_x = s->mb_x * 8 + mx;
692
    src_y = s->mb_y * (8 >> field_based) + my;
693
    src_x = clip(src_x, -8, s->width >> 1);
694
    if (src_x == (s->width >> 1))
695
        dxy &= ~1;
696
    src_y = clip(src_y, -8, height >> 1);
697
    if (src_y == (height >> 1))
698
        dxy &= ~2;
699

    
700
    offset = (src_y * (linesize >> 1)) + src_x + (src_offset >> 1);
701
    ptr = ref_picture[1] + offset;
702
    pix_op[dxy](dest_cb + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
703
    ptr = ref_picture[2] + offset;
704
    pix_op[dxy](dest_cr + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
705
}
706

    
707
static inline void qpel_motion(MpegEncContext *s,
708
                               UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
709
                               int dest_offset,
710
                               UINT8 **ref_picture, int src_offset,
711
                               int field_based, op_pixels_func *pix_op,
712
                               qpel_mc_func *qpix_op,
713
                               int motion_x, int motion_y, int h)
714
{
715
    UINT8 *ptr;
716
    int dxy, offset, mx, my, src_x, src_y, height, linesize;
717

    
718
    dxy = ((motion_y & 3) << 2) | (motion_x & 3);
719
    src_x = s->mb_x * 16 + (motion_x >> 2);
720
    src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
721

    
722
    height = s->height >> field_based;
723
    src_x = clip(src_x, -16, s->width);
724
    if (src_x == s->width)
725
        dxy &= ~3;
726
    src_y = clip(src_y, -16, height);
727
    if (src_y == height)
728
        dxy &= ~12;
729
    linesize = s->linesize << field_based;
730
    ptr = ref_picture[0] + (src_y * linesize) + src_x + src_offset;
731
    dest_y += dest_offset;
732
//printf("%d %d %d\n", src_x, src_y, dxy);
733
    qpix_op[dxy](dest_y                 , ptr                 , linesize, linesize, motion_x&3, motion_y&3);
734
    qpix_op[dxy](dest_y              + 8, ptr              + 8, linesize, linesize, motion_x&3, motion_y&3);
735
    qpix_op[dxy](dest_y + linesize*8    , ptr + linesize*8    , linesize, linesize, motion_x&3, motion_y&3);
736
    qpix_op[dxy](dest_y + linesize*8 + 8, ptr + linesize*8 + 8, linesize, linesize, motion_x&3, motion_y&3);
737
    
738
    mx= (motion_x>>1) | (motion_x&1);
739
    my= (motion_y>>1) | (motion_y&1);
740

    
741
    dxy = 0;
742
    if ((mx & 3) != 0)
743
        dxy |= 1;
744
    if ((my & 3) != 0)
745
        dxy |= 2;
746
    mx = mx >> 2;
747
    my = my >> 2;
748
    
749
    src_x = s->mb_x * 8 + mx;
750
    src_y = s->mb_y * (8 >> field_based) + my;
751
    src_x = clip(src_x, -8, s->width >> 1);
752
    if (src_x == (s->width >> 1))
753
        dxy &= ~1;
754
    src_y = clip(src_y, -8, height >> 1);
755
    if (src_y == (height >> 1))
756
        dxy &= ~2;
757

    
758
    offset = (src_y * (linesize >> 1)) + src_x + (src_offset >> 1);
759
    ptr = ref_picture[1] + offset;
760
    pix_op[dxy](dest_cb + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
761
    ptr = ref_picture[2] + offset;
762
    pix_op[dxy](dest_cr + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
763
}
764

    
765

    
766
static inline void MPV_motion(MpegEncContext *s, 
767
                              UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
768
                              int dir, UINT8 **ref_picture, 
769
                              op_pixels_func *pix_op, qpel_mc_func *qpix_op)
770
{
771
    int dxy, offset, mx, my, src_x, src_y, motion_x, motion_y;
772
    int mb_x, mb_y, i;
773
    UINT8 *ptr, *dest;
774

    
775
    mb_x = s->mb_x;
776
    mb_y = s->mb_y;
777

    
778
    switch(s->mv_type) {
779
    case MV_TYPE_16X16:
780
        if(s->mcsel){
781
#if 0
782
            mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
783
                        ref_picture, 0,
784
                        0, pix_op,
785
                        s->sprite_offset[0][0]>>3,
786
                        s->sprite_offset[0][1]>>3,
787
                        16);
788
#else
789
            gmc1_motion(s, dest_y, dest_cb, dest_cr, 0,
790
                        ref_picture, 0,
791
                        16);
792
#endif
793
        }else if(s->quarter_sample && dir==0){ //FIXME
794
            qpel_motion(s, dest_y, dest_cb, dest_cr, 0,
795
                        ref_picture, 0,
796
                        0, pix_op, qpix_op,
797
                        s->mv[dir][0][0], s->mv[dir][0][1], 16);
798
        }else{
799
            mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
800
                        ref_picture, 0,
801
                        0, pix_op,
802
                        s->mv[dir][0][0], s->mv[dir][0][1], 16);
803
        }           
804
        break;
805
    case MV_TYPE_8X8:
806
        for(i=0;i<4;i++) {
807
            motion_x = s->mv[dir][i][0];
808
            motion_y = s->mv[dir][i][1];
809

    
810
            dxy = ((motion_y & 1) << 1) | (motion_x & 1);
811
            src_x = mb_x * 16 + (motion_x >> 1) + (i & 1) * 8;
812
            src_y = mb_y * 16 + (motion_y >> 1) + ((i >> 1) & 1) * 8;
813
                    
814
            /* WARNING: do no forget half pels */
815
            src_x = clip(src_x, -16, s->width);
816
            if (src_x == s->width)
817
                dxy &= ~1;
818
            src_y = clip(src_y, -16, s->height);
819
            if (src_y == s->height)
820
                dxy &= ~2;
821
                    
822
            ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
823
            dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
824
            pix_op[dxy](dest, ptr, s->linesize, 8);
825
        }
826
        /* In case of 8X8, we construct a single chroma motion vector
827
           with a special rounding */
828
        mx = 0;
829
        my = 0;
830
        for(i=0;i<4;i++) {
831
            mx += s->mv[dir][i][0];
832
            my += s->mv[dir][i][1];
833
        }
834
        if (mx >= 0)
835
            mx = (h263_chroma_roundtab[mx & 0xf] + ((mx >> 3) & ~1));
836
        else {
837
            mx = -mx;
838
            mx = -(h263_chroma_roundtab[mx & 0xf] + ((mx >> 3) & ~1));
839
        }
840
        if (my >= 0)
841
            my = (h263_chroma_roundtab[my & 0xf] + ((my >> 3) & ~1));
842
        else {
843
            my = -my;
844
            my = -(h263_chroma_roundtab[my & 0xf] + ((my >> 3) & ~1));
845
        }
846
        dxy = ((my & 1) << 1) | (mx & 1);
847
        mx >>= 1;
848
        my >>= 1;
849

    
850
        src_x = mb_x * 8 + mx;
851
        src_y = mb_y * 8 + my;
852
        src_x = clip(src_x, -8, s->width/2);
853
        if (src_x == s->width/2)
854
            dxy &= ~1;
855
        src_y = clip(src_y, -8, s->height/2);
856
        if (src_y == s->height/2)
857
            dxy &= ~2;
858
        
859
        offset = (src_y * (s->linesize >> 1)) + src_x;
860
        ptr = ref_picture[1] + offset;
861
        pix_op[dxy](dest_cb, ptr, s->linesize >> 1, 8);
862
        ptr = ref_picture[2] + offset;
863
        pix_op[dxy](dest_cr, ptr, s->linesize >> 1, 8);
864
        break;
865
    case MV_TYPE_FIELD:
866
        if (s->picture_structure == PICT_FRAME) {
867
            /* top field */
868
            mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
869
                        ref_picture, s->field_select[dir][0] ? s->linesize : 0,
870
                        1, pix_op,
871
                        s->mv[dir][0][0], s->mv[dir][0][1], 8);
872
            /* bottom field */
873
            mpeg_motion(s, dest_y, dest_cb, dest_cr, s->linesize,
874
                        ref_picture, s->field_select[dir][1] ? s->linesize : 0,
875
                        1, pix_op,
876
                        s->mv[dir][1][0], s->mv[dir][1][1], 8);
877
        } else {
878
            
879

    
880
        }
881
        break;
882
    }
883
}
884

    
885

    
886
/* put block[] to dest[] */
887
static inline void put_dct(MpegEncContext *s, 
888
                           DCTELEM *block, int i, UINT8 *dest, int line_size)
889
{
890
    if (!s->mpeg2)
891
        s->dct_unquantize(s, block, i, s->qscale);
892
    ff_idct (block);
893
    put_pixels_clamped(block, dest, line_size);
894
}
895

    
896
/* add block[] to dest[] */
897
static inline void add_dct(MpegEncContext *s, 
898
                           DCTELEM *block, int i, UINT8 *dest, int line_size)
899
{
900
    if (s->block_last_index[i] >= 0) {
901
        if (!s->mpeg2)
902
            if(s->encoding || (!s->h263_msmpeg4))
903
                s->dct_unquantize(s, block, i, s->qscale);
904
        ff_idct (block);
905
        add_pixels_clamped(block, dest, line_size);
906
    }
907
}
908

    
909
/* generic function called after a macroblock has been parsed by the
910
   decoder or after it has been encoded by the encoder.
911

912
   Important variables used:
913
   s->mb_intra : true if intra macroblock
914
   s->mv_dir   : motion vector direction
915
   s->mv_type  : motion vector type
916
   s->mv       : motion vector
917
   s->interlaced_dct : true if interlaced dct used (mpeg2)
918
 */
919
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
920
{
921
    int mb_x, mb_y;
922
    int dct_linesize, dct_offset;
923
    op_pixels_func *op_pix;
924
    qpel_mc_func *op_qpix;
925

    
926
    mb_x = s->mb_x;
927
    mb_y = s->mb_y;
928

    
929
#ifdef FF_POSTPROCESS
930
    quant_store[mb_y][mb_x]=s->qscale;
931
    //printf("[%02d][%02d] %d\n",mb_x,mb_y,s->qscale);
932
#endif
933

    
934
    /* update DC predictors for P macroblocks */
935
    if (!s->mb_intra) {
936
        if (s->h263_pred || s->h263_aic) {
937
          if(s->mbintra_table[mb_x + mb_y*s->mb_width])
938
          {
939
            int wrap, xy, v;
940
            s->mbintra_table[mb_x + mb_y*s->mb_width]=0;
941
            wrap = 2 * s->mb_width + 2;
942
            xy = 2 * mb_x + 1 +  (2 * mb_y + 1) * wrap;
943
            v = 1024;
944
            
945
            s->dc_val[0][xy] = v;
946
            s->dc_val[0][xy + 1] = v;
947
            s->dc_val[0][xy + wrap] = v;
948
            s->dc_val[0][xy + 1 + wrap] = v;
949
            /* ac pred */
950
            memset(s->ac_val[0][xy], 0, 16 * sizeof(INT16));
951
            memset(s->ac_val[0][xy + 1], 0, 16 * sizeof(INT16));
952
            memset(s->ac_val[0][xy + wrap], 0, 16 * sizeof(INT16));
953
            memset(s->ac_val[0][xy + 1 + wrap], 0, 16 * sizeof(INT16));
954
            if (s->h263_msmpeg4) {
955
                s->coded_block[xy] = 0;
956
                s->coded_block[xy + 1] = 0;
957
                s->coded_block[xy + wrap] = 0;
958
                s->coded_block[xy + 1 + wrap] = 0;
959
            }
960
            /* chroma */
961
            wrap = s->mb_width + 2;
962
            xy = mb_x + 1 + (mb_y + 1) * wrap;
963
            s->dc_val[1][xy] = v;
964
            s->dc_val[2][xy] = v;
965
            /* ac pred */
966
            memset(s->ac_val[1][xy], 0, 16 * sizeof(INT16));
967
            memset(s->ac_val[2][xy], 0, 16 * sizeof(INT16));
968
          }
969
        } else {
970
            s->last_dc[0] = 128 << s->intra_dc_precision;
971
            s->last_dc[1] = 128 << s->intra_dc_precision;
972
            s->last_dc[2] = 128 << s->intra_dc_precision;
973
        }
974
    }
975
    else if (s->h263_pred || s->h263_aic)
976
        s->mbintra_table[mb_x + mb_y*s->mb_width]=1;
977

    
978
    /* update motion predictor, not for B-frames as they need the motion_val from the last P/S-Frame */
979
    if (s->out_format == FMT_H263) {
980
      if(s->pict_type!=B_TYPE){
981
        int xy, wrap, motion_x, motion_y;
982
        
983
        wrap = 2 * s->mb_width + 2;
984
        xy = 2 * mb_x + 1 + (2 * mb_y + 1) * wrap;
985
        if (s->mb_intra) {
986
            motion_x = 0;
987
            motion_y = 0;
988
            goto motion_init;
989
        } else if (s->mv_type == MV_TYPE_16X16) {
990
            motion_x = s->mv[0][0][0];
991
            motion_y = s->mv[0][0][1];
992
        motion_init:
993
            /* no update if 8X8 because it has been done during parsing */
994
            s->motion_val[xy][0] = motion_x;
995
            s->motion_val[xy][1] = motion_y;
996
            s->motion_val[xy + 1][0] = motion_x;
997
            s->motion_val[xy + 1][1] = motion_y;
998
            s->motion_val[xy + wrap][0] = motion_x;
999
            s->motion_val[xy + wrap][1] = motion_y;
1000
            s->motion_val[xy + 1 + wrap][0] = motion_x;
1001
            s->motion_val[xy + 1 + wrap][1] = motion_y;
1002
        }
1003
      }
1004
    }
1005
    
1006
    if (!s->intra_only) {
1007
        UINT8 *dest_y, *dest_cb, *dest_cr;
1008
        UINT8 *mbskip_ptr;
1009

    
1010
        /* avoid copy if macroblock skipped in last frame too */
1011
        if (!s->encoding && s->pict_type != B_TYPE) {
1012
            mbskip_ptr = &s->mbskip_table[s->mb_y * s->mb_width + s->mb_x];
1013
            if (s->mb_skiped) {
1014
                s->mb_skiped = 0;
1015
                /* if previous was skipped too, then nothing to do ! */
1016
                if (*mbskip_ptr != 0) 
1017
                    goto the_end;
1018
                *mbskip_ptr = 1; /* indicate that this time we skiped it */
1019
            } else {
1020
                *mbskip_ptr = 0; /* not skipped */
1021
            }
1022
        }
1023

    
1024
        dest_y = s->current_picture[0] + (mb_y * 16 * s->linesize) + mb_x * 16;
1025
        dest_cb = s->current_picture[1] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
1026
        dest_cr = s->current_picture[2] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
1027

    
1028
        if (s->interlaced_dct) {
1029
            dct_linesize = s->linesize * 2;
1030
            dct_offset = s->linesize;
1031
        } else {
1032
            dct_linesize = s->linesize;
1033
            dct_offset = s->linesize * 8;
1034
        }
1035

    
1036
        if (!s->mb_intra) {
1037
            /* motion handling */
1038
            if (!s->no_rounding){
1039
                op_pix = put_pixels_tab;
1040
                op_qpix= qpel_mc_rnd_tab;
1041
            }else{
1042
                op_pix = put_no_rnd_pixels_tab;
1043
                op_qpix= qpel_mc_no_rnd_tab;
1044
            }
1045

    
1046
            if (s->mv_dir & MV_DIR_FORWARD) {
1047
                MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture, op_pix, op_qpix);
1048
                if (!s->no_rounding) 
1049
                    op_pix = avg_pixels_tab;
1050
                else
1051
                    op_pix = avg_no_rnd_pixels_tab;
1052
            }
1053
            if (s->mv_dir & MV_DIR_BACKWARD) {
1054
                MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture, op_pix, op_qpix);
1055
            }
1056

    
1057
            /* add dct residue */
1058
            add_dct(s, block[0], 0, dest_y, dct_linesize);
1059
            add_dct(s, block[1], 1, dest_y + 8, dct_linesize);
1060
            add_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
1061
            add_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
1062

    
1063
            add_dct(s, block[4], 4, dest_cb, s->linesize >> 1);
1064
            add_dct(s, block[5], 5, dest_cr, s->linesize >> 1);
1065
        } else {
1066
            /* dct only in intra block */
1067
            put_dct(s, block[0], 0, dest_y, dct_linesize);
1068
            put_dct(s, block[1], 1, dest_y + 8, dct_linesize);
1069
            put_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
1070
            put_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
1071

    
1072
            put_dct(s, block[4], 4, dest_cb, s->linesize >> 1);
1073
            put_dct(s, block[5], 5, dest_cr, s->linesize >> 1);
1074
        }
1075
    }
1076
 the_end:
1077
    emms_c();
1078
}
1079

    
1080
static void encode_picture(MpegEncContext *s, int picture_number)
1081
{
1082
    int mb_x, mb_y, wrap, last_gob, pdif = 0;
1083
    UINT8 *ptr;
1084
    int i, motion_x, motion_y;
1085
    int bits;
1086

    
1087
    s->picture_number = picture_number;
1088

    
1089
    s->last_mc_mb_var = s->mc_mb_var;
1090
    /* Reset the average MB variance */
1091
    s->avg_mb_var = 0;
1092
    s->mc_mb_var = 0;
1093
    /* Estimate motion for every MB */
1094
    for(mb_y=0; mb_y < s->mb_height; mb_y++) {
1095
        for(mb_x=0; mb_x < s->mb_width; mb_x++) {
1096
            int xy= mb_y * s->mb_width + mb_x;
1097
            s->mb_x = mb_x;
1098
            s->mb_y = mb_y;
1099

    
1100
            /* compute motion vector and macro block type (intra or non intra) */
1101
            motion_x = 0;
1102
            motion_y = 0;
1103
            if (s->pict_type == P_TYPE) {
1104
                s->mb_intra = estimate_motion(s, mb_x, mb_y,
1105
                                              &motion_x,
1106
                                              &motion_y);
1107
            } else {
1108
                s->mb_intra = 1;
1109
            }
1110
            /* Store MB type and MV */
1111
            s->mb_type[xy] = s->mb_intra;
1112
            s->mv_table[0][xy] = motion_x;
1113
            s->mv_table[1][xy] = motion_y;
1114
        }
1115
    }
1116
    emms_c();
1117

    
1118
    if(s->avg_mb_var < s->mc_mb_var && s->pict_type != B_TYPE){ //FIXME subtract MV bits
1119
        int i;
1120
        s->pict_type= I_TYPE;
1121
        s->picture_in_gop_number=0;
1122
        for(i=0; i<s->mb_num; i++){
1123
            s->mb_type[i] = 1;
1124
            s->mv_table[0][i] = 0;
1125
            s->mv_table[1][i] = 0;
1126
        }
1127
    }
1128

    
1129
    /* find best f_code */
1130
    if(s->pict_type==P_TYPE){
1131
        int mv_num[8];
1132
        int i;
1133
        int loose=0;
1134
        UINT8 * fcode_tab= s->fcode_tab;
1135

    
1136
        for(i=0; i<8; i++) mv_num[i]=0;
1137

    
1138
        for(i=0; i<s->mb_num; i++){
1139
            if(s->mb_type[i] == 0){
1140
                mv_num[ fcode_tab[s->mv_table[0][i] + MAX_MV] ]++;
1141
                mv_num[ fcode_tab[s->mv_table[1][i] + MAX_MV] ]++;
1142
//printf("%d %d %d\n", s->mv_table[0][i], fcode_tab[s->mv_table[0][i] + MAX_MV], i);
1143
            }
1144
//else printf("I");
1145
        }
1146

    
1147
        for(i=MAX_FCODE; i>1; i--){
1148
            loose+= mv_num[i];
1149
            if(loose > 10) break; //FIXME this is pretty ineffective
1150
        }
1151
        s->f_code= i;
1152
    }else{
1153
        s->f_code= 1;
1154
    }
1155

    
1156
//printf("f_code %d ///\n", s->f_code);
1157
    /* convert MBs with too long MVs to I-Blocks */
1158
    if(s->pict_type==P_TYPE){
1159
        int i;
1160
        const int f_code= s->f_code;
1161
        UINT8 * fcode_tab= s->fcode_tab;
1162

    
1163
        for(i=0; i<s->mb_num; i++){
1164
            if(s->mb_type[i] == 0){
1165
                if(   fcode_tab[s->mv_table[0][i] + MAX_MV] > f_code
1166
                   || fcode_tab[s->mv_table[0][i] + MAX_MV] == 0
1167
                   || fcode_tab[s->mv_table[1][i] + MAX_MV] > f_code
1168
                   || fcode_tab[s->mv_table[1][i] + MAX_MV] == 0 ){
1169
                    s->mb_type[i] = 1;
1170
                    s->mv_table[0][i] = 0;
1171
                    s->mv_table[1][i] = 0;
1172
                }
1173
            }
1174
        }
1175
    }
1176

    
1177
//    printf("%d %d\n", s->avg_mb_var, s->mc_mb_var);
1178

    
1179
    if (!s->fixed_qscale) 
1180
        s->qscale = rate_estimate_qscale(s);
1181

    
1182
    /* precompute matrix */
1183
    if (s->out_format == FMT_MJPEG) {
1184
        /* for mjpeg, we do include qscale in the matrix */
1185
        s->intra_matrix[0] = default_intra_matrix[0];
1186
        for(i=1;i<64;i++)
1187
            s->intra_matrix[i] = (default_intra_matrix[i] * s->qscale) >> 3;
1188
        convert_matrix(s->q_intra_matrix, s->q_intra_matrix16, s->intra_matrix, 8);
1189
    } else {
1190
        convert_matrix(s->q_intra_matrix, s->q_intra_matrix16, s->intra_matrix, s->qscale);
1191
        convert_matrix(s->q_non_intra_matrix, s->q_non_intra_matrix16, s->non_intra_matrix, s->qscale);
1192
    }
1193

    
1194
    s->last_bits= get_bit_count(&s->pb);
1195
    switch(s->out_format) {
1196
    case FMT_MJPEG:
1197
        mjpeg_picture_header(s);
1198
        break;
1199
    case FMT_H263:
1200
        if (s->h263_msmpeg4) 
1201
            msmpeg4_encode_picture_header(s, picture_number);
1202
        else if (s->h263_pred)
1203
            mpeg4_encode_picture_header(s, picture_number);
1204
        else if (s->h263_rv10) 
1205
            rv10_encode_picture_header(s, picture_number);
1206
        else
1207
            h263_encode_picture_header(s, picture_number);
1208
        break;
1209
    case FMT_MPEG1:
1210
        mpeg1_encode_picture_header(s, picture_number);
1211
        break;
1212
    }
1213
    bits= get_bit_count(&s->pb);
1214
    s->header_bits= bits - s->last_bits;
1215
    s->last_bits= bits;
1216
    s->mv_bits=0;
1217
    s->misc_bits=0;
1218
    s->i_tex_bits=0;
1219
    s->p_tex_bits=0;
1220
    s->i_count=0;
1221
    s->p_count=0;
1222
    s->skip_count=0;
1223

    
1224
    /* init last dc values */
1225
    /* note: quant matrix value (8) is implied here */
1226
    s->last_dc[0] = 128;
1227
    s->last_dc[1] = 128;
1228
    s->last_dc[2] = 128;
1229
    s->mb_incr = 1;
1230
    s->last_mv[0][0][0] = 0;
1231
    s->last_mv[0][0][1] = 0;
1232
    s->mv_type = MV_TYPE_16X16;
1233
    s->mv_dir = MV_DIR_FORWARD;
1234

    
1235
    /* Get the GOB height based on picture height */
1236
    if (s->out_format == FMT_H263 && !s->h263_pred && !s->h263_msmpeg4) {
1237
        if (s->height <= 400)
1238
            s->gob_index = 1;
1239
        else if (s->height <= 800)
1240
            s->gob_index = 2;
1241
        else
1242
            s->gob_index = 4;
1243
    }
1244
        
1245
    s->avg_mb_var = s->avg_mb_var / s->mb_num;        
1246
    
1247
    s->block_wrap[0]=
1248
    s->block_wrap[1]=
1249
    s->block_wrap[2]=
1250
    s->block_wrap[3]= s->mb_width*2 + 2;
1251
    s->block_wrap[4]=
1252
    s->block_wrap[5]= s->mb_width + 2;
1253
    for(mb_y=0; mb_y < s->mb_height; mb_y++) {
1254
        /* Put GOB header based on RTP MTU */
1255
        /* TODO: Put all this stuff in a separate generic function */
1256
        if (s->rtp_mode) {
1257
            if (!mb_y) {
1258
                s->ptr_lastgob = s->pb.buf;
1259
                s->ptr_last_mb_line = s->pb.buf;
1260
            } else if (s->out_format == FMT_H263 && !s->h263_pred && !s->h263_msmpeg4 && !(mb_y % s->gob_index)) {
1261
                last_gob = h263_encode_gob_header(s, mb_y);
1262
                if (last_gob) {
1263
                    s->first_gob_line = 1;
1264
                }
1265
            }
1266
        }
1267
        
1268
        s->block_index[0]= s->block_wrap[0]*(mb_y*2 + 1) - 1;
1269
        s->block_index[1]= s->block_wrap[0]*(mb_y*2 + 1);
1270
        s->block_index[2]= s->block_wrap[0]*(mb_y*2 + 2) - 1;
1271
        s->block_index[3]= s->block_wrap[0]*(mb_y*2 + 2);
1272
        s->block_index[4]= s->block_wrap[4]*(mb_y + 1)                    + s->block_wrap[0]*(s->mb_height*2 + 2);
1273
        s->block_index[5]= s->block_wrap[4]*(mb_y + 1 + s->mb_height + 2) + s->block_wrap[0]*(s->mb_height*2 + 2);
1274
        for(mb_x=0; mb_x < s->mb_width; mb_x++) {
1275

    
1276
            s->mb_x = mb_x;
1277
            s->mb_y = mb_y;
1278
            s->block_index[0]+=2;
1279
            s->block_index[1]+=2;
1280
            s->block_index[2]+=2;
1281
            s->block_index[3]+=2;
1282
            s->block_index[4]++;
1283
            s->block_index[5]++;
1284
#if 0
1285
            /* compute motion vector and macro block type (intra or non intra) */
1286
            motion_x = 0;
1287
            motion_y = 0;
1288
            if (s->pict_type == P_TYPE) {
1289
                s->mb_intra = estimate_motion(s, mb_x, mb_y,
1290
                                              &motion_x,
1291
                                              &motion_y);
1292
            } else {
1293
                s->mb_intra = 1;
1294
            }
1295
#endif
1296

    
1297
            s->mb_intra = s->mb_type[mb_y * s->mb_width + mb_x];
1298
            motion_x = s->mv_table[0][mb_y * s->mb_width + mb_x];
1299
            motion_y = s->mv_table[1][mb_y * s->mb_width + mb_x];
1300
            
1301
            /* get the pixels */
1302
            wrap = s->linesize;
1303
            ptr = s->new_picture[0] + (mb_y * 16 * wrap) + mb_x * 16;
1304
            get_pixels(s->block[0], ptr, wrap);
1305
            get_pixels(s->block[1], ptr + 8, wrap);
1306
            get_pixels(s->block[2], ptr + 8 * wrap, wrap);
1307
            get_pixels(s->block[3], ptr + 8 * wrap + 8, wrap);
1308
            wrap = s->linesize >> 1;
1309
            ptr = s->new_picture[1] + (mb_y * 8 * wrap) + mb_x * 8;
1310
            get_pixels(s->block[4], ptr, wrap);
1311

    
1312
            wrap = s->linesize >> 1;
1313
            ptr = s->new_picture[2] + (mb_y * 8 * wrap) + mb_x * 8;
1314
            get_pixels(s->block[5], ptr, wrap);
1315

    
1316
            /* subtract previous frame if non intra */
1317
            if (!s->mb_intra) {
1318
                int dxy, offset, mx, my;
1319

    
1320
                dxy = ((motion_y & 1) << 1) | (motion_x & 1);
1321
                ptr = s->last_picture[0] + 
1322
                    ((mb_y * 16 + (motion_y >> 1)) * s->linesize) + 
1323
                    (mb_x * 16 + (motion_x >> 1));
1324

    
1325
                sub_pixels_2(s->block[0], ptr, s->linesize, dxy);
1326
                sub_pixels_2(s->block[1], ptr + 8, s->linesize, dxy);
1327
                sub_pixels_2(s->block[2], ptr + s->linesize * 8, s->linesize, dxy);
1328
                sub_pixels_2(s->block[3], ptr + 8 + s->linesize * 8, s->linesize ,dxy);
1329

    
1330
                if (s->out_format == FMT_H263) {
1331
                    /* special rounding for h263 */
1332
                    dxy = 0;
1333
                    if ((motion_x & 3) != 0)
1334
                        dxy |= 1;
1335
                    if ((motion_y & 3) != 0)
1336
                        dxy |= 2;
1337
                    mx = motion_x >> 2;
1338
                    my = motion_y >> 2;
1339
                } else {
1340
                    mx = motion_x / 2;
1341
                    my = motion_y / 2;
1342
                    dxy = ((my & 1) << 1) | (mx & 1);
1343
                    mx >>= 1;
1344
                    my >>= 1;
1345
                }
1346
                offset = ((mb_y * 8 + my) * (s->linesize >> 1)) + (mb_x * 8 + mx);
1347
                ptr = s->last_picture[1] + offset;
1348
                sub_pixels_2(s->block[4], ptr, s->linesize >> 1, dxy);
1349
                ptr = s->last_picture[2] + offset;
1350
                sub_pixels_2(s->block[5], ptr, s->linesize >> 1, dxy);
1351
            }
1352
            emms_c();
1353
            
1354
#if 0
1355
            {
1356
                float adap_parm;
1357
                
1358
                adap_parm = ((s->avg_mb_var << 1) + s->mb_var[s->mb_width*mb_y+mb_x] + 1.0) /
1359
                            ((s->mb_var[s->mb_width*mb_y+mb_x] << 1) + s->avg_mb_var + 1.0);
1360
            
1361
                printf("\ntype=%c qscale=%2d adap=%0.2f dquant=%4.2f var=%4d avgvar=%4d", 
1362
                        (s->mb_type[s->mb_width*mb_y+mb_x] > 0) ? 'I' : 'P', 
1363
                        s->qscale, adap_parm, s->qscale*adap_parm,
1364
                        s->mb_var[s->mb_width*mb_y+mb_x], s->avg_mb_var);
1365
            }
1366
#endif
1367
            /* DCT & quantize */
1368
            if (s->h263_msmpeg4) {
1369
                msmpeg4_dc_scale(s);
1370
            } else if (s->h263_pred) {
1371
                h263_dc_scale(s);
1372
            } else {
1373
                /* default quantization values */
1374
                s->y_dc_scale = 8;
1375
                s->c_dc_scale = 8;
1376
            }
1377
            for(i=0;i<6;i++) {
1378
                s->block_last_index[i] = dct_quantize(s, s->block[i], i, s->qscale);
1379
            }
1380

    
1381
            /* huffman encode */
1382
            switch(s->out_format) {
1383
            case FMT_MPEG1:
1384
                mpeg1_encode_mb(s, s->block, motion_x, motion_y);
1385
                break;
1386
            case FMT_H263:
1387
                if (s->h263_msmpeg4)
1388
                    msmpeg4_encode_mb(s, s->block, motion_x, motion_y);
1389
                else if(s->h263_pred)
1390
                    mpeg4_encode_mb(s, s->block, motion_x, motion_y);
1391
                else
1392
                    h263_encode_mb(s, s->block, motion_x, motion_y);
1393
                break;
1394
            case FMT_MJPEG:
1395
                mjpeg_encode_mb(s, s->block);
1396
                break;
1397
            }
1398
            
1399
            /* decompress blocks so that we keep the state of the decoder */
1400
            s->mv[0][0][0] = motion_x;
1401
            s->mv[0][0][1] = motion_y;
1402

    
1403
            MPV_decode_mb(s, s->block);
1404
        }
1405

    
1406

    
1407
        /* Obtain average GOB size for RTP */
1408
        if (s->rtp_mode) {
1409
            if (!mb_y)
1410
                s->mb_line_avgsize = pbBufPtr(&s->pb) - s->ptr_last_mb_line;
1411
            else if (!(mb_y % s->gob_index)) {    
1412
                s->mb_line_avgsize = (s->mb_line_avgsize + pbBufPtr(&s->pb) - s->ptr_last_mb_line) >> 1;
1413
                s->ptr_last_mb_line = pbBufPtr(&s->pb);
1414
            }
1415
            //fprintf(stderr, "\nMB line: %d\tSize: %u\tAvg. Size: %u", s->mb_y, 
1416
            //                    (s->pb.buf_ptr - s->ptr_last_mb_line), s->mb_line_avgsize);
1417
            s->first_gob_line = 0;
1418
        }
1419
    }
1420

    
1421
    if (s->h263_msmpeg4 && s->pict_type == I_TYPE)
1422
        msmpeg4_encode_ext_header(s);
1423

    
1424
    //if (s->gob_number)
1425
    //    fprintf(stderr,"\nNumber of GOB: %d", s->gob_number);
1426
    
1427
    /* Send the last GOB if RTP */    
1428
    if (s->rtp_mode) {
1429
        flush_put_bits(&s->pb);
1430
        pdif = pbBufPtr(&s->pb) - s->ptr_lastgob;
1431
        /* Call the RTP callback to send the last GOB */
1432
        if (s->rtp_callback)
1433
            s->rtp_callback(s->ptr_lastgob, pdif, s->gob_number);
1434
        s->ptr_lastgob = pbBufPtr(&s->pb);
1435
        //fprintf(stderr,"\nGOB: %2d size: %d (last)", s->gob_number, pdif);
1436
    }
1437

    
1438
}
1439

    
1440
static int dct_quantize_c(MpegEncContext *s, 
1441
                        DCTELEM *block, int n,
1442
                        int qscale)
1443
{
1444
    int i, j, level, last_non_zero, q;
1445
    const int *qmat;
1446
    int minLevel, maxLevel;
1447

    
1448
    if(s->avctx!=NULL && s->avctx->codec->id==CODEC_ID_MPEG4){
1449
        /* mpeg4 */
1450
        minLevel= -2048;
1451
        maxLevel= 2047;
1452
    }else if(s->out_format==FMT_MPEG1){
1453
        /* mpeg1 */
1454
        minLevel= -255;
1455
        maxLevel= 255;
1456
    }else if(s->out_format==FMT_MJPEG){
1457
        /* (m)jpeg */
1458
        minLevel= -1023;
1459
        maxLevel= 1023;
1460
    }else{
1461
        /* h263 / msmpeg4 */
1462
        minLevel= -128;
1463
        maxLevel= 127;
1464
    }
1465

    
1466
    av_fdct (block);
1467

    
1468
    /* we need this permutation so that we correct the IDCT
1469
       permutation. will be moved into DCT code */
1470
    block_permute(block);
1471

    
1472
    if (s->mb_intra) {
1473
        if (n < 4)
1474
            q = s->y_dc_scale;
1475
        else
1476
            q = s->c_dc_scale;
1477
        q = q << 3;
1478
        
1479
        /* note: block[0] is assumed to be positive */
1480
        block[0] = (block[0] + (q >> 1)) / q;
1481
        i = 1;
1482
        last_non_zero = 0;
1483
        if (s->out_format == FMT_H263) {
1484
            qmat = s->q_non_intra_matrix;
1485
        } else {
1486
            qmat = s->q_intra_matrix;
1487
        }
1488
    } else {
1489
        i = 0;
1490
        last_non_zero = -1;
1491
        qmat = s->q_non_intra_matrix;
1492
    }
1493

    
1494
    for(;i<64;i++) {
1495
        j = zigzag_direct[i];
1496
        level = block[j];
1497
        level = level * qmat[j];
1498
#ifdef PARANOID
1499
        {
1500
            static int count = 0;
1501
            int level1, level2, qmat1;
1502
            double val;
1503
            if (qmat == s->q_non_intra_matrix) {
1504
                qmat1 = default_non_intra_matrix[j] * s->qscale;
1505
            } else {
1506
                qmat1 = default_intra_matrix[j] * s->qscale;
1507
            }
1508
            if (av_fdct != jpeg_fdct_ifast)
1509
                val = ((double)block[j] * 8.0) / (double)qmat1;
1510
            else
1511
                val = ((double)block[j] * 8.0 * 2048.0) / 
1512
                    ((double)qmat1 * aanscales[j]);
1513
            level1 = (int)val;
1514
            level2 = level / (1 << (QMAT_SHIFT - 3));
1515
            if (level1 != level2) {
1516
                fprintf(stderr, "%d: quant error qlevel=%d wanted=%d level=%d qmat1=%d qmat=%d wantedf=%0.6f\n", 
1517
                        count, level2, level1, block[j], qmat1, qmat[j],
1518
                        val);
1519
                count++;
1520
            }
1521

    
1522
        }
1523
#endif
1524
        /* XXX: slight error for the low range. Test should be equivalent to
1525
           (level <= -(1 << (QMAT_SHIFT - 3)) || level >= (1 <<
1526
           (QMAT_SHIFT - 3)))
1527
        */
1528
        if (((level << (31 - (QMAT_SHIFT - 3))) >> (31 - (QMAT_SHIFT - 3))) != 
1529
            level) {
1530
            level = level / (1 << (QMAT_SHIFT - 3));
1531
            /* XXX: currently, this code is not optimal. the range should be:
1532
               mpeg1: -255..255
1533
               mpeg2: -2048..2047
1534
               h263:  -128..127
1535
               mpeg4: -2048..2047
1536
            */
1537
            if (level > maxLevel)
1538
                level = maxLevel;
1539
            else if (level < minLevel)
1540
                level = minLevel;
1541

    
1542
            block[j] = level;
1543
            last_non_zero = i;
1544
        } else {
1545
            block[j] = 0;
1546
        }
1547
    }
1548
    return last_non_zero;
1549
}
1550

    
1551
static void dct_unquantize_mpeg1_c(MpegEncContext *s, 
1552
                                   DCTELEM *block, int n, int qscale)
1553
{
1554
    int i, level, nCoeffs;
1555
    const UINT16 *quant_matrix;
1556

    
1557
    if(s->alternate_scan) nCoeffs= 64;
1558
    else nCoeffs= s->block_last_index[n]+1;
1559
    
1560
    if (s->mb_intra) {
1561
        if (n < 4) 
1562
            block[0] = block[0] * s->y_dc_scale;
1563
        else
1564
            block[0] = block[0] * s->c_dc_scale;
1565
        /* XXX: only mpeg1 */
1566
        quant_matrix = s->intra_matrix;
1567
        for(i=1;i<nCoeffs;i++) {
1568
            int j= zigzag_direct[i];
1569
            level = block[j];
1570
            if (level) {
1571
                if (level < 0) {
1572
                    level = -level;
1573
                    level = (int)(level * qscale * quant_matrix[j]) >> 3;
1574
                    level = (level - 1) | 1;
1575
                    level = -level;
1576
                } else {
1577
                    level = (int)(level * qscale * quant_matrix[j]) >> 3;
1578
                    level = (level - 1) | 1;
1579
                }
1580
#ifdef PARANOID
1581
                if (level < -2048 || level > 2047)
1582
                    fprintf(stderr, "unquant error %d %d\n", i, level);
1583
#endif
1584
                block[j] = level;
1585
            }
1586
        }
1587
    } else {
1588
        i = 0;
1589
        quant_matrix = s->non_intra_matrix;
1590
        for(;i<nCoeffs;i++) {
1591
            int j= zigzag_direct[i];
1592
            level = block[j];
1593
            if (level) {
1594
                if (level < 0) {
1595
                    level = -level;
1596
                    level = (((level << 1) + 1) * qscale *
1597
                             ((int) (quant_matrix[j]))) >> 4;
1598
                    level = (level - 1) | 1;
1599
                    level = -level;
1600
                } else {
1601
                    level = (((level << 1) + 1) * qscale *
1602
                             ((int) (quant_matrix[j]))) >> 4;
1603
                    level = (level - 1) | 1;
1604
                }
1605
#ifdef PARANOID
1606
                if (level < -2048 || level > 2047)
1607
                    fprintf(stderr, "unquant error %d %d\n", i, level);
1608
#endif
1609
                block[j] = level;
1610
            }
1611
        }
1612
    }
1613
}
1614

    
1615
static void dct_unquantize_h263_c(MpegEncContext *s, 
1616
                                  DCTELEM *block, int n, int qscale)
1617
{
1618
    int i, level, qmul, qadd;
1619
    int nCoeffs;
1620
    
1621
    if (s->mb_intra) {
1622
        if (!s->h263_aic) {
1623
            if (n < 4) 
1624
                block[0] = block[0] * s->y_dc_scale;
1625
            else
1626
                block[0] = block[0] * s->c_dc_scale;
1627
        }
1628
        i = 1;
1629
        nCoeffs= 64; //does not allways use zigzag table 
1630
    } else {
1631
        i = 0;
1632
        nCoeffs= zigzag_end[ s->block_last_index[n] ];
1633
    }
1634

    
1635
    qmul = s->qscale << 1;
1636
    if (s->h263_aic && s->mb_intra)
1637
        qadd = 0;
1638
    else
1639
        qadd = (s->qscale - 1) | 1;
1640

    
1641
    for(;i<nCoeffs;i++) {
1642
        level = block[i];
1643
        if (level) {
1644
            if (level < 0) {
1645
                level = level * qmul - qadd;
1646
            } else {
1647
                level = level * qmul + qadd;
1648
            }
1649
#ifdef PARANOID
1650
                if (level < -2048 || level > 2047)
1651
                    fprintf(stderr, "unquant error %d %d\n", i, level);
1652
#endif
1653
            block[i] = level;
1654
        }
1655
    }
1656
}
1657

    
1658
/* rate control */
1659

    
1660
/* an I frame is I_FRAME_SIZE_RATIO bigger than a P frame */
1661
#define I_FRAME_SIZE_RATIO 3.0
1662
#define QSCALE_K           20
1663

    
1664
static void rate_control_init(MpegEncContext *s)
1665
{
1666
#if 1
1667
    emms_c();
1668

    
1669
    //initial values, they dont really matter as they will be totally different within a few frames
1670
    s->i_pred.coeff= s->p_pred.coeff= 7.0;
1671
    s->i_pred.count= s->p_pred.count= 1.0;
1672
    
1673
    s->i_pred.decay= s->p_pred.decay= 0.4;
1674
    
1675
    // use more bits at the beginning, otherwise high motion at the begin will look like shit
1676
    s->qsum=100;
1677
    s->qcount=100;
1678

    
1679
    s->short_term_qsum=0.001;
1680
    s->short_term_qcount=0.001;
1681
#else
1682
    s->wanted_bits = 0;
1683

    
1684
    if (s->intra_only) {
1685
        s->I_frame_bits = ((INT64)s->bit_rate * FRAME_RATE_BASE) / s->frame_rate;
1686
        s->P_frame_bits = s->I_frame_bits;
1687
    } else {
1688
        s->P_frame_bits = (int) ((float)(s->gop_size * s->bit_rate) / 
1689
                                 (float)((float)s->frame_rate / FRAME_RATE_BASE * (I_FRAME_SIZE_RATIO + s->gop_size - 1)));
1690
        s->I_frame_bits = (int)(s->P_frame_bits * I_FRAME_SIZE_RATIO);
1691
    }
1692

    
1693
#if defined(DEBUG)
1694
    printf("I_frame_size=%d P_frame_size=%d\n",
1695
           s->I_frame_bits, s->P_frame_bits);
1696
#endif
1697
#endif
1698
}
1699

    
1700
static double predict(Predictor *p, double q, double var)
1701
{
1702
    return p->coeff*var / (q*p->count);
1703
}
1704

    
1705
static void update_predictor(Predictor *p, double q, double var, double size)
1706
{
1707
    double new_coeff= size*q / (var + 1);
1708
    if(var<1000) return;
1709
/*{
1710
int pred= predict(p, q, var);
1711
int error= abs(pred-size);
1712
static double sum=0;
1713
static int count=0;
1714
if(count>5) sum+=error;
1715
count++;
1716
if(256*256*256*64%count==0){
1717
    printf("%d %f %f\n", count, sum/count, p->coeff);
1718
}
1719
}*/
1720
    p->count*= p->decay;
1721
    p->coeff*= p->decay;
1722
    p->count++;
1723
    p->coeff+= new_coeff;
1724
}
1725

    
1726
static int rate_estimate_qscale(MpegEncContext *s)
1727
{
1728
#if 1
1729
    int qmin= s->qmin;
1730
    int qmax= s->qmax;
1731
    int rate_q=5;
1732
    float q;
1733
    int qscale;
1734
    float br_compensation;
1735
    double diff;
1736
    double short_term_q;
1737
    double long_term_q;
1738
    int last_qscale= s->qscale;
1739
    double fps;
1740
    INT64 wanted_bits;
1741
    emms_c();
1742
    
1743
    fps= (double)s->frame_rate / FRAME_RATE_BASE;
1744
    wanted_bits= s->bit_rate*(double)s->picture_number/fps;
1745

    
1746
    
1747
    if(s->picture_number>2){
1748
        /* update predictors */
1749
        if(s->last_pict_type == I_TYPE){
1750
        //FIXME
1751
        }else{ //P Frame
1752
//printf("%d %d %d %f\n", s->qscale, s->last_mc_mb_var, s->frame_bits, s->p_pred.coeff);
1753
            update_predictor(&s->p_pred, s->qscale, s->last_mc_mb_var, s->frame_bits);
1754
        }
1755
    }
1756

    
1757
    if(s->pict_type == I_TYPE){
1758
        //FIXME
1759
        rate_q= s->qsum/s->qcount;
1760
    }else{ //P Frame
1761
        int i;
1762
        int diff, best_diff=1000000000;
1763
        for(i=1; i<=31; i++){
1764
            diff= predict(&s->p_pred, i, s->mc_mb_var) - (double)s->bit_rate/fps;
1765
            if(diff<0) diff= -diff;
1766
            if(diff<best_diff){
1767
                best_diff= diff;
1768
                rate_q= i;
1769
            }
1770
        }
1771
    }
1772

    
1773
    s->short_term_qsum*=s->qblur;
1774
    s->short_term_qcount*=s->qblur;
1775

    
1776
    s->short_term_qsum+= rate_q;
1777
    s->short_term_qcount++;
1778
    short_term_q= s->short_term_qsum/s->short_term_qcount;
1779
    
1780
    long_term_q= s->qsum/s->qcount*s->total_bits/wanted_bits;
1781

    
1782
//    q= (long_term_q - short_term_q)*s->qcompress + short_term_q;
1783
    q= 1/((1/long_term_q - 1/short_term_q)*s->qcompress + 1/short_term_q);
1784

    
1785
    diff= s->total_bits - wanted_bits;
1786
    br_compensation= (s->bit_rate_tolerance - diff)/s->bit_rate_tolerance;
1787
    if(br_compensation<=0.0) br_compensation=0.001;
1788
    q/=br_compensation;
1789

    
1790
    qscale= (int)(q + 0.5);
1791
    if     (qscale<qmin) qscale=qmin;
1792
    else if(qscale>qmax) qscale=qmax;
1793
    
1794
    if     (qscale<last_qscale-s->max_qdiff) qscale=last_qscale-s->max_qdiff;
1795
    else if(qscale>last_qscale+s->max_qdiff) qscale=last_qscale+s->max_qdiff;
1796

    
1797
    s->qsum+= qscale;
1798
    s->qcount++;
1799

    
1800
    s->last_pict_type= s->pict_type;
1801
//printf("q:%d diff:%d comp:%f rate_q:%d st_q:%d fvar:%d last_size:%d\n", qscale, (int)diff, br_compensation, 
1802
//       rate_q, (int)short_term_q, s->mc_mb_var, s->frame_bits);
1803
//printf("%d %d\n", s->bit_rate, (int)fps);
1804
    return qscale;
1805
#else
1806
    INT64 diff, total_bits = s->total_bits;
1807
    float q;
1808
    int qscale;
1809
    if (s->pict_type == I_TYPE) {
1810
        s->wanted_bits += s->I_frame_bits;
1811
    } else {
1812
        s->wanted_bits += s->P_frame_bits;
1813
    }
1814
    diff = s->wanted_bits - total_bits;
1815
    q = 31.0 - (float)diff / (QSCALE_K * s->mb_height * s->mb_width);
1816
    /* adjust for I frame */
1817
    if (s->pict_type == I_TYPE && !s->intra_only) {
1818
        q /= I_FRAME_SIZE_RATIO;
1819
    }
1820

    
1821
    /* using a too small Q scale leeds to problems in mpeg1 and h263
1822
       because AC coefficients are clamped to 255 or 127 */
1823
    qmin = 3;
1824
    if (q < qmin)
1825
        q = qmin;
1826
    else if (q > 31)
1827
        q = 31;
1828
    qscale = (int)(q + 0.5);
1829
#if defined(DEBUG)
1830
    printf("\n%d: total=%0.0f wanted=%0.0f br=%0.1f diff=%d qest=%2.1f\n", 
1831
           s->picture_number, 
1832
           (double)total_bits, 
1833
           (double)s->wanted_bits,
1834
           (float)s->frame_rate / FRAME_RATE_BASE * 
1835
           total_bits / s->picture_number, 
1836
           (int)diff, q);
1837
#endif
1838
    return qscale;
1839
#endif
1840
}
1841

    
1842
AVCodec mpeg1video_encoder = {
1843
    "mpeg1video",
1844
    CODEC_TYPE_VIDEO,
1845
    CODEC_ID_MPEG1VIDEO,
1846
    sizeof(MpegEncContext),
1847
    MPV_encode_init,
1848
    MPV_encode_picture,
1849
    MPV_encode_end,
1850
};
1851

    
1852
AVCodec h263_encoder = {
1853
    "h263",
1854
    CODEC_TYPE_VIDEO,
1855
    CODEC_ID_H263,
1856
    sizeof(MpegEncContext),
1857
    MPV_encode_init,
1858
    MPV_encode_picture,
1859
    MPV_encode_end,
1860
};
1861

    
1862
AVCodec h263p_encoder = {
1863
    "h263p",
1864
    CODEC_TYPE_VIDEO,
1865
    CODEC_ID_H263P,
1866
    sizeof(MpegEncContext),
1867
    MPV_encode_init,
1868
    MPV_encode_picture,
1869
    MPV_encode_end,
1870
};
1871

    
1872
AVCodec rv10_encoder = {
1873
    "rv10",
1874
    CODEC_TYPE_VIDEO,
1875
    CODEC_ID_RV10,
1876
    sizeof(MpegEncContext),
1877
    MPV_encode_init,
1878
    MPV_encode_picture,
1879
    MPV_encode_end,
1880
};
1881

    
1882
AVCodec mjpeg_encoder = {
1883
    "mjpeg",
1884
    CODEC_TYPE_VIDEO,
1885
    CODEC_ID_MJPEG,
1886
    sizeof(MpegEncContext),
1887
    MPV_encode_init,
1888
    MPV_encode_picture,
1889
    MPV_encode_end,
1890
};
1891

    
1892
AVCodec mpeg4_encoder = {
1893
    "mpeg4",
1894
    CODEC_TYPE_VIDEO,
1895
    CODEC_ID_MPEG4,
1896
    sizeof(MpegEncContext),
1897
    MPV_encode_init,
1898
    MPV_encode_picture,
1899
    MPV_encode_end,
1900
};
1901

    
1902
AVCodec msmpeg4_encoder = {
1903
    "msmpeg4",
1904
    CODEC_TYPE_VIDEO,
1905
    CODEC_ID_MSMPEG4,
1906
    sizeof(MpegEncContext),
1907
    MPV_encode_init,
1908
    MPV_encode_picture,
1909
    MPV_encode_end,
1910
};