5cd2e91752ad4f7ebf1856603e0737afdf51b9b5
[ffmpeg.git] / libavcodec / mpegvideo_enc.c
1 /*
2  * The simplest mpeg encoder (well, it was the simplest!)
3  * Copyright (c) 2000,2001 Fabrice Bellard.
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  *
22  * 4MV & hq & b-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
23  */
24
25 /**
26  * @file mpegvideo_enc.c
27  * The simplest mpeg encoder (well, it was the simplest!).
28  */
29
30 #include "avcodec.h"
31 #include "dsputil.h"
32 #include "mpegvideo.h"
33 #include "mpegvideo_common.h"
34 #include "mjpegenc.h"
35 #include "msmpeg4.h"
36 #include "faandct.h"
37 #include <limits.h>
38
39 //#undef NDEBUG
40 //#include <assert.h>
41
42 static int encode_picture(MpegEncContext *s, int picture_number);
43 static int dct_quantize_refine(MpegEncContext *s, DCTELEM *block, int16_t *weight, DCTELEM *orig, int n, int qscale);
44 static int sse_mb(MpegEncContext *s);
45
46 /* enable all paranoid tests for rounding, overflows, etc... */
47 //#define PARANOID
48
49 //#define DEBUG
50
51 static const uint16_t aanscales[64] = {
52     /* precomputed values scaled up by 14 bits */
53     16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
54     22725, 31521, 29692, 26722, 22725, 17855, 12299,  6270,
55     21407, 29692, 27969, 25172, 21407, 16819, 11585,  5906,
56     19266, 26722, 25172, 22654, 19266, 15137, 10426,  5315,
57     16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
58     12873, 17855, 16819, 15137, 12873, 10114,  6967,  3552,
59     8867 , 12299, 11585, 10426,  8867,  6967,  4799,  2446,
60     4520 ,  6270,  5906,  5315,  4520,  3552,  2446,  1247
61 };
62
63 static uint8_t default_mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
64 static uint8_t default_fcode_tab[MAX_MV*2+1];
65
66 enum PixelFormat ff_yuv420p_list[2]= {PIX_FMT_YUV420P, -1};
67
68 static void convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
69                            const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra)
70 {
71     int qscale;
72     int shift=0;
73
74     for(qscale=qmin; qscale<=qmax; qscale++){
75         int i;
76         if (dsp->fdct == ff_jpeg_fdct_islow
77 #ifdef FAAN_POSTSCALE
78             || dsp->fdct == ff_faandct
79 #endif
80             ) {
81             for(i=0;i<64;i++) {
82                 const int j= dsp->idct_permutation[i];
83                 /* 16 <= qscale * quant_matrix[i] <= 7905 */
84                 /* 19952         <= aanscales[i] * qscale * quant_matrix[i]           <= 249205026 */
85                 /* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
86                 /* 3444240       >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
87
88                 qmat[qscale][i] = (int)((UINT64_C(1) << QMAT_SHIFT) /
89                                 (qscale * quant_matrix[j]));
90             }
91         } else if (dsp->fdct == fdct_ifast
92 #ifndef FAAN_POSTSCALE
93                    || dsp->fdct == ff_faandct
94 #endif
95                    ) {
96             for(i=0;i<64;i++) {
97                 const int j= dsp->idct_permutation[i];
98                 /* 16 <= qscale * quant_matrix[i] <= 7905 */
99                 /* 19952         <= aanscales[i] * qscale * quant_matrix[i]           <= 249205026 */
100                 /* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
101                 /* 3444240       >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
102
103                 qmat[qscale][i] = (int)((UINT64_C(1) << (QMAT_SHIFT + 14)) /
104                                 (aanscales[i] * qscale * quant_matrix[j]));
105             }
106         } else {
107             for(i=0;i<64;i++) {
108                 const int j= dsp->idct_permutation[i];
109                 /* We can safely suppose that 16 <= quant_matrix[i] <= 255
110                    So 16           <= qscale * quant_matrix[i]             <= 7905
111                    so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
112                    so 32768        >= (1<<19) / (qscale * quant_matrix[i]) >= 67
113                 */
114                 qmat[qscale][i] = (int)((UINT64_C(1) << QMAT_SHIFT) / (qscale * quant_matrix[j]));
115 //                qmat  [qscale][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
116                 qmat16[qscale][0][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[j]);
117
118                 if(qmat16[qscale][0][i]==0 || qmat16[qscale][0][i]==128*256) qmat16[qscale][0][i]=128*256-1;
119                 qmat16[qscale][1][i]= ROUNDED_DIV(bias<<(16-QUANT_BIAS_SHIFT), qmat16[qscale][0][i]);
120             }
121         }
122
123         for(i=intra; i<64; i++){
124             int64_t max= 8191;
125             if (dsp->fdct == fdct_ifast
126 #ifndef FAAN_POSTSCALE
127                    || dsp->fdct == ff_faandct
128 #endif
129                    ) {
130                 max= (8191LL*aanscales[i]) >> 14;
131             }
132             while(((max * qmat[qscale][i]) >> shift) > INT_MAX){
133                 shift++;
134             }
135         }
136     }
137     if(shift){
138         av_log(NULL, AV_LOG_INFO, "Warning, QMAT_SHIFT is larger than %d, overflows possible\n", QMAT_SHIFT - shift);
139     }
140 }
141
142 static inline void update_qscale(MpegEncContext *s){
143     s->qscale= (s->lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
144     s->qscale= av_clip(s->qscale, s->avctx->qmin, s->avctx->qmax);
145
146     s->lambda2= (s->lambda*s->lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
147 }
148
149 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix){
150     int i;
151
152     if(matrix){
153         put_bits(pb, 1, 1);
154         for(i=0;i<64;i++) {
155             put_bits(pb, 8, matrix[ ff_zigzag_direct[i] ]);
156         }
157     }else
158         put_bits(pb, 1, 0);
159 }
160
161 static void copy_picture_attributes(MpegEncContext *s, AVFrame *dst, AVFrame *src){
162     int i;
163
164     dst->pict_type              = src->pict_type;
165     dst->quality                = src->quality;
166     dst->coded_picture_number   = src->coded_picture_number;
167     dst->display_picture_number = src->display_picture_number;
168 //    dst->reference              = src->reference;
169     dst->pts                    = src->pts;
170     dst->interlaced_frame       = src->interlaced_frame;
171     dst->top_field_first        = src->top_field_first;
172
173     if(s->avctx->me_threshold){
174         if(!src->motion_val[0])
175             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.motion_val not set!\n");
176         if(!src->mb_type)
177             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.mb_type not set!\n");
178         if(!src->ref_index[0])
179             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.ref_index not set!\n");
180         if(src->motion_subsample_log2 != dst->motion_subsample_log2)
181             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.motion_subsample_log2 doesn't match! (%d!=%d)\n",
182             src->motion_subsample_log2, dst->motion_subsample_log2);
183
184         memcpy(dst->mb_type, src->mb_type, s->mb_stride * s->mb_height * sizeof(dst->mb_type[0]));
185
186         for(i=0; i<2; i++){
187             int stride= ((16*s->mb_width )>>src->motion_subsample_log2) + 1;
188             int height= ((16*s->mb_height)>>src->motion_subsample_log2);
189
190             if(src->motion_val[i] && src->motion_val[i] != dst->motion_val[i]){
191                 memcpy(dst->motion_val[i], src->motion_val[i], 2*stride*height*sizeof(int16_t));
192             }
193             if(src->ref_index[i] && src->ref_index[i] != dst->ref_index[i]){
194                 memcpy(dst->ref_index[i], src->ref_index[i], s->b8_stride*2*s->mb_height*sizeof(int8_t));
195             }
196         }
197     }
198 }
199
200 static void update_duplicate_context_after_me(MpegEncContext *dst, MpegEncContext *src){
201 #define COPY(a) dst->a= src->a
202     COPY(pict_type);
203     COPY(current_picture);
204     COPY(f_code);
205     COPY(b_code);
206     COPY(qscale);
207     COPY(lambda);
208     COPY(lambda2);
209     COPY(picture_in_gop_number);
210     COPY(gop_picture_number);
211     COPY(frame_pred_frame_dct); //FIXME don't set in encode_header
212     COPY(progressive_frame); //FIXME don't set in encode_header
213     COPY(partitioned_frame); //FIXME don't set in encode_header
214 #undef COPY
215 }
216
217 /**
218  * sets the given MpegEncContext to defaults for encoding.
219  * the changed fields will not depend upon the prior state of the MpegEncContext.
220  */
221 static void MPV_encode_defaults(MpegEncContext *s){
222     int i;
223     MPV_common_defaults(s);
224
225     for(i=-16; i<16; i++){
226         default_fcode_tab[i + MAX_MV]= 1;
227     }
228     s->me.mv_penalty= default_mv_penalty;
229     s->fcode_tab= default_fcode_tab;
230 }
231
232 /* init video encoder */
233 int MPV_encode_init(AVCodecContext *avctx)
234 {
235     MpegEncContext *s = avctx->priv_data;
236     int i;
237     int chroma_h_shift, chroma_v_shift;
238
239     MPV_encode_defaults(s);
240
241     switch (avctx->codec_id) {
242     case CODEC_ID_MPEG2VIDEO:
243         if(avctx->pix_fmt != PIX_FMT_YUV420P && avctx->pix_fmt != PIX_FMT_YUV422P){
244             av_log(avctx, AV_LOG_ERROR, "only YUV420 and YUV422 are supported\n");
245             return -1;
246         }
247         break;
248     case CODEC_ID_LJPEG:
249     case CODEC_ID_MJPEG:
250         if(avctx->pix_fmt != PIX_FMT_YUVJ420P && avctx->pix_fmt != PIX_FMT_YUVJ422P &&
251            ((avctx->pix_fmt != PIX_FMT_YUV420P && avctx->pix_fmt != PIX_FMT_YUV422P) || avctx->strict_std_compliance>FF_COMPLIANCE_INOFFICIAL)){
252             av_log(avctx, AV_LOG_ERROR, "colorspace not supported in jpeg\n");
253             return -1;
254         }
255         break;
256     default:
257         if(avctx->pix_fmt != PIX_FMT_YUV420P){
258             av_log(avctx, AV_LOG_ERROR, "only YUV420 is supported\n");
259             return -1;
260         }
261     }
262
263     switch (avctx->pix_fmt) {
264     case PIX_FMT_YUVJ422P:
265     case PIX_FMT_YUV422P:
266         s->chroma_format = CHROMA_422;
267         break;
268     case PIX_FMT_YUVJ420P:
269     case PIX_FMT_YUV420P:
270     default:
271         s->chroma_format = CHROMA_420;
272         break;
273     }
274
275     s->bit_rate = avctx->bit_rate;
276     s->width = avctx->width;
277     s->height = avctx->height;
278     if(avctx->gop_size > 600 && avctx->strict_std_compliance>FF_COMPLIANCE_EXPERIMENTAL){
279         av_log(avctx, AV_LOG_ERROR, "Warning keyframe interval too large! reducing it ...\n");
280         avctx->gop_size=600;
281     }
282     s->gop_size = avctx->gop_size;
283     s->avctx = avctx;
284     s->flags= avctx->flags;
285     s->flags2= avctx->flags2;
286     s->max_b_frames= avctx->max_b_frames;
287     s->codec_id= avctx->codec->id;
288     s->luma_elim_threshold  = avctx->luma_elim_threshold;
289     s->chroma_elim_threshold= avctx->chroma_elim_threshold;
290     s->strict_std_compliance= avctx->strict_std_compliance;
291     s->data_partitioning= avctx->flags & CODEC_FLAG_PART;
292     s->quarter_sample= (avctx->flags & CODEC_FLAG_QPEL)!=0;
293     s->mpeg_quant= avctx->mpeg_quant;
294     s->rtp_mode= !!avctx->rtp_payload_size;
295     s->intra_dc_precision= avctx->intra_dc_precision;
296     s->user_specified_pts = AV_NOPTS_VALUE;
297
298     if (s->gop_size <= 1) {
299         s->intra_only = 1;
300         s->gop_size = 12;
301     } else {
302         s->intra_only = 0;
303     }
304
305     s->me_method = avctx->me_method;
306
307     /* Fixed QSCALE */
308     s->fixed_qscale = !!(avctx->flags & CODEC_FLAG_QSCALE);
309
310     s->adaptive_quant= (   s->avctx->lumi_masking
311                         || s->avctx->dark_masking
312                         || s->avctx->temporal_cplx_masking
313                         || s->avctx->spatial_cplx_masking
314                         || s->avctx->p_masking
315                         || s->avctx->border_masking
316                         || (s->flags&CODEC_FLAG_QP_RD))
317                        && !s->fixed_qscale;
318
319     s->obmc= !!(s->flags & CODEC_FLAG_OBMC);
320     s->loop_filter= !!(s->flags & CODEC_FLAG_LOOP_FILTER);
321     s->alternate_scan= !!(s->flags & CODEC_FLAG_ALT_SCAN);
322     s->intra_vlc_format= !!(s->flags2 & CODEC_FLAG2_INTRA_VLC);
323     s->q_scale_type= !!(s->flags2 & CODEC_FLAG2_NON_LINEAR_QUANT);
324
325     if(avctx->rc_max_rate && !avctx->rc_buffer_size){
326         av_log(avctx, AV_LOG_ERROR, "a vbv buffer size is needed, for encoding with a maximum bitrate\n");
327         return -1;
328     }
329
330     if(avctx->rc_min_rate && avctx->rc_max_rate != avctx->rc_min_rate){
331         av_log(avctx, AV_LOG_INFO, "Warning min_rate > 0 but min_rate != max_rate isn't recommended!\n");
332     }
333
334     if(avctx->rc_min_rate && avctx->rc_min_rate > avctx->bit_rate){
335         av_log(avctx, AV_LOG_ERROR, "bitrate below min bitrate\n");
336         return -1;
337     }
338
339     if(avctx->rc_max_rate && avctx->rc_max_rate < avctx->bit_rate){
340         av_log(avctx, AV_LOG_INFO, "bitrate above max bitrate\n");
341         return -1;
342     }
343
344     if(avctx->rc_buffer_size && avctx->bit_rate*av_q2d(avctx->time_base) > avctx->rc_buffer_size){
345         av_log(avctx, AV_LOG_ERROR, "VBV buffer too small for bitrate\n");
346         return -1;
347     }
348
349     if(avctx->bit_rate*av_q2d(avctx->time_base) > avctx->bit_rate_tolerance){
350         av_log(avctx, AV_LOG_ERROR, "bitrate tolerance too small for bitrate\n");
351         return -1;
352     }
353
354     if(   s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate
355        && (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO)
356        && 90000LL * (avctx->rc_buffer_size-1) > s->avctx->rc_max_rate*0xFFFFLL){
357
358         av_log(avctx, AV_LOG_INFO, "Warning vbv_delay will be set to 0xFFFF (=VBR) as the specified vbv buffer is too large for the given bitrate!\n");
359     }
360
361     if((s->flags & CODEC_FLAG_4MV) && s->codec_id != CODEC_ID_MPEG4
362        && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P && s->codec_id != CODEC_ID_FLV1){
363         av_log(avctx, AV_LOG_ERROR, "4MV not supported by codec\n");
364         return -1;
365     }
366
367     if(s->obmc && s->avctx->mb_decision != FF_MB_DECISION_SIMPLE){
368         av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with simple mb decision\n");
369         return -1;
370     }
371
372     if(s->obmc && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P){
373         av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with H263(+)\n");
374         return -1;
375     }
376
377     if(s->quarter_sample && s->codec_id != CODEC_ID_MPEG4){
378         av_log(avctx, AV_LOG_ERROR, "qpel not supported by codec\n");
379         return -1;
380     }
381
382     if(s->data_partitioning && s->codec_id != CODEC_ID_MPEG4){
383         av_log(avctx, AV_LOG_ERROR, "data partitioning not supported by codec\n");
384         return -1;
385     }
386
387     if(s->max_b_frames && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO){
388         av_log(avctx, AV_LOG_ERROR, "b frames not supported by codec\n");
389         return -1;
390     }
391
392     if((s->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME|CODEC_FLAG_ALT_SCAN))
393        && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG2VIDEO){
394         av_log(avctx, AV_LOG_ERROR, "interlacing not supported by codec\n");
395         return -1;
396     }
397
398     if(s->mpeg_quant && s->codec_id != CODEC_ID_MPEG4){ //FIXME mpeg2 uses that too
399         av_log(avctx, AV_LOG_ERROR, "mpeg2 style quantization not supported by codec\n");
400         return -1;
401     }
402
403     if((s->flags & CODEC_FLAG_CBP_RD) && !(s->flags & CODEC_FLAG_TRELLIS_QUANT)){
404         av_log(avctx, AV_LOG_ERROR, "CBP RD needs trellis quant\n");
405         return -1;
406     }
407
408     if((s->flags & CODEC_FLAG_QP_RD) && s->avctx->mb_decision != FF_MB_DECISION_RD){
409         av_log(avctx, AV_LOG_ERROR, "QP RD needs mbd=2\n");
410         return -1;
411     }
412
413     if(s->avctx->scenechange_threshold < 1000000000 && (s->flags & CODEC_FLAG_CLOSED_GOP)){
414         av_log(avctx, AV_LOG_ERROR, "closed gop with scene change detection arent supported yet, set threshold to 1000000000\n");
415         return -1;
416     }
417
418     if((s->flags2 & CODEC_FLAG2_INTRA_VLC) && s->codec_id != CODEC_ID_MPEG2VIDEO){
419         av_log(avctx, AV_LOG_ERROR, "intra vlc table not supported by codec\n");
420         return -1;
421     }
422
423     if(s->flags & CODEC_FLAG_LOW_DELAY){
424         if (s->codec_id != CODEC_ID_MPEG2VIDEO && s->codec_id != CODEC_ID_MPEG1VIDEO){
425             av_log(avctx, AV_LOG_ERROR, "low delay forcing is only available for mpeg1/2\n");
426             return -1;
427         }
428         if (s->max_b_frames != 0){
429             av_log(avctx, AV_LOG_ERROR, "b frames cannot be used with low delay\n");
430             return -1;
431         }
432     }
433
434     if(s->q_scale_type == 1){
435         if(s->codec_id != CODEC_ID_MPEG2VIDEO){
436             av_log(avctx, AV_LOG_ERROR, "non linear quant is only available for mpeg2\n");
437             return -1;
438         }
439         if(avctx->qmax > 12){
440             av_log(avctx, AV_LOG_ERROR, "non linear quant only supports qmax <= 12 currently\n");
441             return -1;
442         }
443     }
444
445     if(s->avctx->thread_count > 1 && s->codec_id != CODEC_ID_MPEG4
446        && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO
447        && (s->codec_id != CODEC_ID_H263P || !(s->flags & CODEC_FLAG_H263P_SLICE_STRUCT))){
448         av_log(avctx, AV_LOG_ERROR, "multi threaded encoding not supported by codec\n");
449         return -1;
450     }
451
452     if(s->avctx->thread_count > 1)
453         s->rtp_mode= 1;
454
455     if(!avctx->time_base.den || !avctx->time_base.num){
456         av_log(avctx, AV_LOG_ERROR, "framerate not set\n");
457         return -1;
458     }
459
460     i= (INT_MAX/2+128)>>8;
461     if(avctx->me_threshold >= i){
462         av_log(avctx, AV_LOG_ERROR, "me_threshold too large, max is %d\n", i - 1);
463         return -1;
464     }
465     if(avctx->mb_threshold >= i){
466         av_log(avctx, AV_LOG_ERROR, "mb_threshold too large, max is %d\n", i - 1);
467         return -1;
468     }
469
470     if(avctx->b_frame_strategy && (avctx->flags&CODEC_FLAG_PASS2)){
471         av_log(avctx, AV_LOG_INFO, "notice: b_frame_strategy only affects the first pass\n");
472         avctx->b_frame_strategy = 0;
473     }
474
475     i= ff_gcd(avctx->time_base.den, avctx->time_base.num);
476     if(i > 1){
477         av_log(avctx, AV_LOG_INFO, "removing common factors from framerate\n");
478         avctx->time_base.den /= i;
479         avctx->time_base.num /= i;
480 //        return -1;
481     }
482
483     if(s->codec_id==CODEC_ID_MJPEG){
484         s->intra_quant_bias= 1<<(QUANT_BIAS_SHIFT-1); //(a + x/2)/x
485         s->inter_quant_bias= 0;
486     }else if(s->mpeg_quant || s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO){
487         s->intra_quant_bias= 3<<(QUANT_BIAS_SHIFT-3); //(a + x*3/8)/x
488         s->inter_quant_bias= 0;
489     }else{
490         s->intra_quant_bias=0;
491         s->inter_quant_bias=-(1<<(QUANT_BIAS_SHIFT-2)); //(a - x/4)/x
492     }
493
494     if(avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)
495         s->intra_quant_bias= avctx->intra_quant_bias;
496     if(avctx->inter_quant_bias != FF_DEFAULT_QUANT_BIAS)
497         s->inter_quant_bias= avctx->inter_quant_bias;
498
499     avcodec_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift, &chroma_v_shift);
500
501     if(avctx->codec_id == CODEC_ID_MPEG4 && s->avctx->time_base.den > (1<<16)-1){
502         av_log(avctx, AV_LOG_ERROR, "timebase not supported by mpeg 4 standard\n");
503         return -1;
504     }
505     s->time_increment_bits = av_log2(s->avctx->time_base.den - 1) + 1;
506
507     switch(avctx->codec->id) {
508     case CODEC_ID_MPEG1VIDEO:
509         s->out_format = FMT_MPEG1;
510         s->low_delay= !!(s->flags & CODEC_FLAG_LOW_DELAY);
511         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
512         break;
513     case CODEC_ID_MPEG2VIDEO:
514         s->out_format = FMT_MPEG1;
515         s->low_delay= !!(s->flags & CODEC_FLAG_LOW_DELAY);
516         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
517         s->rtp_mode= 1;
518         break;
519     case CODEC_ID_LJPEG:
520     case CODEC_ID_MJPEG:
521         s->out_format = FMT_MJPEG;
522         s->intra_only = 1; /* force intra only for jpeg */
523         s->mjpeg_vsample[0] = 2;
524         s->mjpeg_vsample[1] = 2>>chroma_v_shift;
525         s->mjpeg_vsample[2] = 2>>chroma_v_shift;
526         s->mjpeg_hsample[0] = 2;
527         s->mjpeg_hsample[1] = 2>>chroma_h_shift;
528         s->mjpeg_hsample[2] = 2>>chroma_h_shift;
529         if (!(ENABLE_MJPEG_ENCODER || ENABLE_LJPEG_ENCODER)
530             || ff_mjpeg_encode_init(s) < 0)
531             return -1;
532         avctx->delay=0;
533         s->low_delay=1;
534         break;
535     case CODEC_ID_H261:
536         if (!ENABLE_H261_ENCODER)  return -1;
537         if (ff_h261_get_picture_format(s->width, s->height) < 0) {
538             av_log(avctx, AV_LOG_ERROR, "The specified picture size of %dx%d is not valid for the H.261 codec.\nValid sizes are 176x144, 352x288\n", s->width, s->height);
539             return -1;
540         }
541         s->out_format = FMT_H261;
542         avctx->delay=0;
543         s->low_delay=1;
544         break;
545     case CODEC_ID_H263:
546         if (h263_get_picture_format(s->width, s->height) == 7) {
547             av_log(avctx, AV_LOG_INFO, "The specified picture size of %dx%d is not valid for the H.263 codec.\nValid sizes are 128x96, 176x144, 352x288, 704x576, and 1408x1152. Try H.263+.\n", s->width, s->height);
548             return -1;
549         }
550         s->out_format = FMT_H263;
551         s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
552         avctx->delay=0;
553         s->low_delay=1;
554         break;
555     case CODEC_ID_H263P:
556         s->out_format = FMT_H263;
557         s->h263_plus = 1;
558         /* Fx */
559         s->umvplus = (avctx->flags & CODEC_FLAG_H263P_UMV) ? 1:0;
560         s->h263_aic= (avctx->flags & CODEC_FLAG_AC_PRED) ? 1:0;
561         s->modified_quant= s->h263_aic;
562         s->alt_inter_vlc= (avctx->flags & CODEC_FLAG_H263P_AIV) ? 1:0;
563         s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
564         s->loop_filter= (avctx->flags & CODEC_FLAG_LOOP_FILTER) ? 1:0;
565         s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
566         s->h263_slice_structured= (s->flags & CODEC_FLAG_H263P_SLICE_STRUCT) ? 1:0;
567
568         /* /Fx */
569         /* These are just to be sure */
570         avctx->delay=0;
571         s->low_delay=1;
572         break;
573     case CODEC_ID_FLV1:
574         s->out_format = FMT_H263;
575         s->h263_flv = 2; /* format = 1; 11-bit codes */
576         s->unrestricted_mv = 1;
577         s->rtp_mode=0; /* don't allow GOB */
578         avctx->delay=0;
579         s->low_delay=1;
580         break;
581     case CODEC_ID_RV10:
582         s->out_format = FMT_H263;
583         avctx->delay=0;
584         s->low_delay=1;
585         break;
586     case CODEC_ID_RV20:
587         s->out_format = FMT_H263;
588         avctx->delay=0;
589         s->low_delay=1;
590         s->modified_quant=1;
591         s->h263_aic=1;
592         s->h263_plus=1;
593         s->loop_filter=1;
594         s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
595         break;
596     case CODEC_ID_MPEG4:
597         s->out_format = FMT_H263;
598         s->h263_pred = 1;
599         s->unrestricted_mv = 1;
600         s->low_delay= s->max_b_frames ? 0 : 1;
601         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
602         break;
603     case CODEC_ID_MSMPEG4V1:
604         s->out_format = FMT_H263;
605         s->h263_msmpeg4 = 1;
606         s->h263_pred = 1;
607         s->unrestricted_mv = 1;
608         s->msmpeg4_version= 1;
609         avctx->delay=0;
610         s->low_delay=1;
611         break;
612     case CODEC_ID_MSMPEG4V2:
613         s->out_format = FMT_H263;
614         s->h263_msmpeg4 = 1;
615         s->h263_pred = 1;
616         s->unrestricted_mv = 1;
617         s->msmpeg4_version= 2;
618         avctx->delay=0;
619         s->low_delay=1;
620         break;
621     case CODEC_ID_MSMPEG4V3:
622         s->out_format = FMT_H263;
623         s->h263_msmpeg4 = 1;
624         s->h263_pred = 1;
625         s->unrestricted_mv = 1;
626         s->msmpeg4_version= 3;
627         s->flipflop_rounding=1;
628         avctx->delay=0;
629         s->low_delay=1;
630         break;
631     case CODEC_ID_WMV1:
632         s->out_format = FMT_H263;
633         s->h263_msmpeg4 = 1;
634         s->h263_pred = 1;
635         s->unrestricted_mv = 1;
636         s->msmpeg4_version= 4;
637         s->flipflop_rounding=1;
638         avctx->delay=0;
639         s->low_delay=1;
640         break;
641     case CODEC_ID_WMV2:
642         s->out_format = FMT_H263;
643         s->h263_msmpeg4 = 1;
644         s->h263_pred = 1;
645         s->unrestricted_mv = 1;
646         s->msmpeg4_version= 5;
647         s->flipflop_rounding=1;
648         avctx->delay=0;
649         s->low_delay=1;
650         break;
651     default:
652         return -1;
653     }
654
655     avctx->has_b_frames= !s->low_delay;
656
657     s->encoding = 1;
658
659     /* init */
660     if (MPV_common_init(s) < 0)
661         return -1;
662
663     if(s->modified_quant)
664         s->chroma_qscale_table= ff_h263_chroma_qscale_table;
665     s->progressive_frame=
666     s->progressive_sequence= !(avctx->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME|CODEC_FLAG_ALT_SCAN));
667     s->quant_precision=5;
668
669     ff_set_cmp(&s->dsp, s->dsp.ildct_cmp, s->avctx->ildct_cmp);
670     ff_set_cmp(&s->dsp, s->dsp.frame_skip_cmp, s->avctx->frame_skip_cmp);
671
672     if (ENABLE_H261_ENCODER && s->out_format == FMT_H261)
673         ff_h261_encode_init(s);
674     if (s->out_format == FMT_H263)
675         h263_encode_init(s);
676     if (ENABLE_MSMPEG4_ENCODER && s->msmpeg4_version)
677         ff_msmpeg4_encode_init(s);
678     if ((ENABLE_MPEG1VIDEO_ENCODER || ENABLE_MPEG2VIDEO_ENCODER)
679         && s->out_format == FMT_MPEG1)
680         ff_mpeg1_encode_init(s);
681
682     /* init q matrix */
683     for(i=0;i<64;i++) {
684         int j= s->dsp.idct_permutation[i];
685         if(s->codec_id==CODEC_ID_MPEG4 && s->mpeg_quant){
686             s->intra_matrix[j] = ff_mpeg4_default_intra_matrix[i];
687             s->inter_matrix[j] = ff_mpeg4_default_non_intra_matrix[i];
688         }else if(s->out_format == FMT_H263 || s->out_format == FMT_H261){
689             s->intra_matrix[j] =
690             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
691         }else
692         { /* mpeg1/2 */
693             s->intra_matrix[j] = ff_mpeg1_default_intra_matrix[i];
694             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
695         }
696         if(s->avctx->intra_matrix)
697             s->intra_matrix[j] = s->avctx->intra_matrix[i];
698         if(s->avctx->inter_matrix)
699             s->inter_matrix[j] = s->avctx->inter_matrix[i];
700     }
701
702     /* precompute matrix */
703     /* for mjpeg, we do include qscale in the matrix */
704     if (s->out_format != FMT_MJPEG) {
705         convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
706                        s->intra_matrix, s->intra_quant_bias, avctx->qmin, 31, 1);
707         convert_matrix(&s->dsp, s->q_inter_matrix, s->q_inter_matrix16,
708                        s->inter_matrix, s->inter_quant_bias, avctx->qmin, 31, 0);
709     }
710
711     if(ff_rate_control_init(s) < 0)
712         return -1;
713
714     return 0;
715 }
716
717 int MPV_encode_end(AVCodecContext *avctx)
718 {
719     MpegEncContext *s = avctx->priv_data;
720
721     ff_rate_control_uninit(s);
722
723     MPV_common_end(s);
724     if ((ENABLE_MJPEG_ENCODER || ENABLE_LJPEG_ENCODER) && s->out_format == FMT_MJPEG)
725         ff_mjpeg_encode_close(s);
726
727     av_freep(&avctx->extradata);
728
729     return 0;
730 }
731
732 static int get_sae(uint8_t *src, int ref, int stride){
733     int x,y;
734     int acc=0;
735
736     for(y=0; y<16; y++){
737         for(x=0; x<16; x++){
738             acc+= FFABS(src[x+y*stride] - ref);
739         }
740     }
741
742     return acc;
743 }
744
745 static int get_intra_count(MpegEncContext *s, uint8_t *src, uint8_t *ref, int stride){
746     int x, y, w, h;
747     int acc=0;
748
749     w= s->width &~15;
750     h= s->height&~15;
751
752     for(y=0; y<h; y+=16){
753         for(x=0; x<w; x+=16){
754             int offset= x + y*stride;
755             int sad = s->dsp.sad[0](NULL, src + offset, ref + offset, stride, 16);
756             int mean= (s->dsp.pix_sum(src + offset, stride) + 128)>>8;
757             int sae = get_sae(src + offset, mean, stride);
758
759             acc+= sae + 500 < sad;
760         }
761     }
762     return acc;
763 }
764
765
766 static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
767     AVFrame *pic=NULL;
768     int64_t pts;
769     int i;
770     const int encoding_delay= s->max_b_frames;
771     int direct=1;
772
773     if(pic_arg){
774         pts= pic_arg->pts;
775         pic_arg->display_picture_number= s->input_picture_number++;
776
777         if(pts != AV_NOPTS_VALUE){
778             if(s->user_specified_pts != AV_NOPTS_VALUE){
779                 int64_t time= pts;
780                 int64_t last= s->user_specified_pts;
781
782                 if(time <= last){
783                     av_log(s->avctx, AV_LOG_ERROR, "Error, Invalid timestamp=%"PRId64", last=%"PRId64"\n", pts, s->user_specified_pts);
784                     return -1;
785                 }
786             }
787             s->user_specified_pts= pts;
788         }else{
789             if(s->user_specified_pts != AV_NOPTS_VALUE){
790                 s->user_specified_pts=
791                 pts= s->user_specified_pts + 1;
792                 av_log(s->avctx, AV_LOG_INFO, "Warning: AVFrame.pts=? trying to guess (%"PRId64")\n", pts);
793             }else{
794                 pts= pic_arg->display_picture_number;
795             }
796         }
797     }
798
799   if(pic_arg){
800     if(encoding_delay && !(s->flags&CODEC_FLAG_INPUT_PRESERVED)) direct=0;
801     if(pic_arg->linesize[0] != s->linesize) direct=0;
802     if(pic_arg->linesize[1] != s->uvlinesize) direct=0;
803     if(pic_arg->linesize[2] != s->uvlinesize) direct=0;
804
805 //    av_log(AV_LOG_DEBUG, "%d %d %d %d\n",pic_arg->linesize[0], pic_arg->linesize[1], s->linesize, s->uvlinesize);
806
807     if(direct){
808         i= ff_find_unused_picture(s, 1);
809
810         pic= (AVFrame*)&s->picture[i];
811         pic->reference= 3;
812
813         for(i=0; i<4; i++){
814             pic->data[i]= pic_arg->data[i];
815             pic->linesize[i]= pic_arg->linesize[i];
816         }
817         alloc_picture(s, (Picture*)pic, 1);
818     }else{
819         i= ff_find_unused_picture(s, 0);
820
821         pic= (AVFrame*)&s->picture[i];
822         pic->reference= 3;
823
824         alloc_picture(s, (Picture*)pic, 0);
825
826         if(   pic->data[0] + INPLACE_OFFSET == pic_arg->data[0]
827            && pic->data[1] + INPLACE_OFFSET == pic_arg->data[1]
828            && pic->data[2] + INPLACE_OFFSET == pic_arg->data[2]){
829        // empty
830         }else{
831             int h_chroma_shift, v_chroma_shift;
832             avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &h_chroma_shift, &v_chroma_shift);
833
834             for(i=0; i<3; i++){
835                 int src_stride= pic_arg->linesize[i];
836                 int dst_stride= i ? s->uvlinesize : s->linesize;
837                 int h_shift= i ? h_chroma_shift : 0;
838                 int v_shift= i ? v_chroma_shift : 0;
839                 int w= s->width >>h_shift;
840                 int h= s->height>>v_shift;
841                 uint8_t *src= pic_arg->data[i];
842                 uint8_t *dst= pic->data[i];
843
844                 if(!s->avctx->rc_buffer_size)
845                     dst +=INPLACE_OFFSET;
846
847                 if(src_stride==dst_stride)
848                     memcpy(dst, src, src_stride*h);
849                 else{
850                     while(h--){
851                         memcpy(dst, src, w);
852                         dst += dst_stride;
853                         src += src_stride;
854                     }
855                 }
856             }
857         }
858     }
859     copy_picture_attributes(s, pic, pic_arg);
860     pic->pts= pts; //we set this here to avoid modifiying pic_arg
861   }
862
863     /* shift buffer entries */
864     for(i=1; i<MAX_PICTURE_COUNT /*s->encoding_delay+1*/; i++)
865         s->input_picture[i-1]= s->input_picture[i];
866
867     s->input_picture[encoding_delay]= (Picture*)pic;
868
869     return 0;
870 }
871
872 static int skip_check(MpegEncContext *s, Picture *p, Picture *ref){
873     int x, y, plane;
874     int score=0;
875     int64_t score64=0;
876
877     for(plane=0; plane<3; plane++){
878         const int stride= p->linesize[plane];
879         const int bw= plane ? 1 : 2;
880         for(y=0; y<s->mb_height*bw; y++){
881             for(x=0; x<s->mb_width*bw; x++){
882                 int off= p->type == FF_BUFFER_TYPE_SHARED ? 0: 16;
883                 int v= s->dsp.frame_skip_cmp[1](s, p->data[plane] + 8*(x + y*stride)+off, ref->data[plane] + 8*(x + y*stride), stride, 8);
884
885                 switch(s->avctx->frame_skip_exp){
886                     case 0: score= FFMAX(score, v); break;
887                     case 1: score+= FFABS(v);break;
888                     case 2: score+= v*v;break;
889                     case 3: score64+= FFABS(v*v*(int64_t)v);break;
890                     case 4: score64+= v*v*(int64_t)(v*v);break;
891                 }
892             }
893         }
894     }
895
896     if(score) score64= score;
897
898     if(score64 < s->avctx->frame_skip_threshold)
899         return 1;
900     if(score64 < ((s->avctx->frame_skip_factor * (int64_t)s->lambda)>>8))
901         return 1;
902     return 0;
903 }
904
905 static int estimate_best_b_count(MpegEncContext *s){
906     AVCodec *codec= avcodec_find_encoder(s->avctx->codec_id);
907     AVCodecContext *c= avcodec_alloc_context();
908     AVFrame input[FF_MAX_B_FRAMES+2];
909     const int scale= s->avctx->brd_scale;
910     int i, j, out_size, p_lambda, b_lambda, lambda2;
911     int outbuf_size= s->width * s->height; //FIXME
912     uint8_t *outbuf= av_malloc(outbuf_size);
913     int64_t best_rd= INT64_MAX;
914     int best_b_count= -1;
915
916     assert(scale>=0 && scale <=3);
917
918 //    emms_c();
919     p_lambda= s->last_lambda_for[P_TYPE]; //s->next_picture_ptr->quality;
920     b_lambda= s->last_lambda_for[B_TYPE]; //p_lambda *FFABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset;
921     if(!b_lambda) b_lambda= p_lambda; //FIXME we should do this somewhere else
922     lambda2= (b_lambda*b_lambda + (1<<FF_LAMBDA_SHIFT)/2 ) >> FF_LAMBDA_SHIFT;
923
924     c->width = s->width >> scale;
925     c->height= s->height>> scale;
926     c->flags= CODEC_FLAG_QSCALE | CODEC_FLAG_PSNR | CODEC_FLAG_INPUT_PRESERVED /*| CODEC_FLAG_EMU_EDGE*/;
927     c->flags|= s->avctx->flags & CODEC_FLAG_QPEL;
928     c->mb_decision= s->avctx->mb_decision;
929     c->me_cmp= s->avctx->me_cmp;
930     c->mb_cmp= s->avctx->mb_cmp;
931     c->me_sub_cmp= s->avctx->me_sub_cmp;
932     c->pix_fmt = PIX_FMT_YUV420P;
933     c->time_base= s->avctx->time_base;
934     c->max_b_frames= s->max_b_frames;
935
936     if (avcodec_open(c, codec) < 0)
937         return -1;
938
939     for(i=0; i<s->max_b_frames+2; i++){
940         int ysize= c->width*c->height;
941         int csize= (c->width/2)*(c->height/2);
942         Picture pre_input, *pre_input_ptr= i ? s->input_picture[i-1] : s->next_picture_ptr;
943
944         avcodec_get_frame_defaults(&input[i]);
945         input[i].data[0]= av_malloc(ysize + 2*csize);
946         input[i].data[1]= input[i].data[0] + ysize;
947         input[i].data[2]= input[i].data[1] + csize;
948         input[i].linesize[0]= c->width;
949         input[i].linesize[1]=
950         input[i].linesize[2]= c->width/2;
951
952         if(pre_input_ptr && (!i || s->input_picture[i-1])) {
953             pre_input= *pre_input_ptr;
954
955             if(pre_input.type != FF_BUFFER_TYPE_SHARED && i) {
956                 pre_input.data[0]+=INPLACE_OFFSET;
957                 pre_input.data[1]+=INPLACE_OFFSET;
958                 pre_input.data[2]+=INPLACE_OFFSET;
959             }
960
961             s->dsp.shrink[scale](input[i].data[0], input[i].linesize[0], pre_input.data[0], pre_input.linesize[0], c->width, c->height);
962             s->dsp.shrink[scale](input[i].data[1], input[i].linesize[1], pre_input.data[1], pre_input.linesize[1], c->width>>1, c->height>>1);
963             s->dsp.shrink[scale](input[i].data[2], input[i].linesize[2], pre_input.data[2], pre_input.linesize[2], c->width>>1, c->height>>1);
964         }
965     }
966
967     for(j=0; j<s->max_b_frames+1; j++){
968         int64_t rd=0;
969
970         if(!s->input_picture[j])
971             break;
972
973         c->error[0]= c->error[1]= c->error[2]= 0;
974
975         input[0].pict_type= I_TYPE;
976         input[0].quality= 1 * FF_QP2LAMBDA;
977         out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[0]);
978 //        rd += (out_size * lambda2) >> FF_LAMBDA_SHIFT;
979
980         for(i=0; i<s->max_b_frames+1; i++){
981             int is_p= i % (j+1) == j || i==s->max_b_frames;
982
983             input[i+1].pict_type= is_p ? P_TYPE : B_TYPE;
984             input[i+1].quality= is_p ? p_lambda : b_lambda;
985             out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[i+1]);
986             rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
987         }
988
989         /* get the delayed frames */
990         while(out_size){
991             out_size = avcodec_encode_video(c, outbuf, outbuf_size, NULL);
992             rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
993         }
994
995         rd += c->error[0] + c->error[1] + c->error[2];
996
997         if(rd < best_rd){
998             best_rd= rd;
999             best_b_count= j;
1000         }
1001     }
1002
1003     av_freep(&outbuf);
1004     avcodec_close(c);
1005     av_freep(&c);
1006
1007     for(i=0; i<s->max_b_frames+2; i++){
1008         av_freep(&input[i].data[0]);
1009     }
1010
1011     return best_b_count;
1012 }
1013
1014 static void select_input_picture(MpegEncContext *s){
1015     int i;
1016
1017     for(i=1; i<MAX_PICTURE_COUNT; i++)
1018         s->reordered_input_picture[i-1]= s->reordered_input_picture[i];
1019     s->reordered_input_picture[MAX_PICTURE_COUNT-1]= NULL;
1020
1021     /* set next picture type & ordering */
1022     if(s->reordered_input_picture[0]==NULL && s->input_picture[0]){
1023         if(/*s->picture_in_gop_number >= s->gop_size ||*/ s->next_picture_ptr==NULL || s->intra_only){
1024             s->reordered_input_picture[0]= s->input_picture[0];
1025             s->reordered_input_picture[0]->pict_type= I_TYPE;
1026             s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
1027         }else{
1028             int b_frames;
1029
1030             if(s->avctx->frame_skip_threshold || s->avctx->frame_skip_factor){
1031                 if(s->picture_in_gop_number < s->gop_size && skip_check(s, s->input_picture[0], s->next_picture_ptr)){
1032                 //FIXME check that te gop check above is +-1 correct
1033 //av_log(NULL, AV_LOG_DEBUG, "skip %p %"PRId64"\n", s->input_picture[0]->data[0], s->input_picture[0]->pts);
1034
1035                     if(s->input_picture[0]->type == FF_BUFFER_TYPE_SHARED){
1036                         for(i=0; i<4; i++)
1037                             s->input_picture[0]->data[i]= NULL;
1038                         s->input_picture[0]->type= 0;
1039                     }else{
1040                         assert(   s->input_picture[0]->type==FF_BUFFER_TYPE_USER
1041                                || s->input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
1042
1043                         s->avctx->release_buffer(s->avctx, (AVFrame*)s->input_picture[0]);
1044                     }
1045
1046                     emms_c();
1047                     ff_vbv_update(s, 0);
1048
1049                     goto no_output_pic;
1050                 }
1051             }
1052
1053             if(s->flags&CODEC_FLAG_PASS2){
1054                 for(i=0; i<s->max_b_frames+1; i++){
1055                     int pict_num= s->input_picture[0]->display_picture_number + i;
1056
1057                     if(pict_num >= s->rc_context.num_entries)
1058                         break;
1059                     if(!s->input_picture[i]){
1060                         s->rc_context.entry[pict_num-1].new_pict_type = P_TYPE;
1061                         break;
1062                     }
1063
1064                     s->input_picture[i]->pict_type=
1065                         s->rc_context.entry[pict_num].new_pict_type;
1066                 }
1067             }
1068
1069             if(s->avctx->b_frame_strategy==0){
1070                 b_frames= s->max_b_frames;
1071                 while(b_frames && !s->input_picture[b_frames]) b_frames--;
1072             }else if(s->avctx->b_frame_strategy==1){
1073                 for(i=1; i<s->max_b_frames+1; i++){
1074                     if(s->input_picture[i] && s->input_picture[i]->b_frame_score==0){
1075                         s->input_picture[i]->b_frame_score=
1076                             get_intra_count(s, s->input_picture[i  ]->data[0],
1077                                                s->input_picture[i-1]->data[0], s->linesize) + 1;
1078                     }
1079                 }
1080                 for(i=0; i<s->max_b_frames+1; i++){
1081                     if(s->input_picture[i]==NULL || s->input_picture[i]->b_frame_score - 1 > s->mb_num/s->avctx->b_sensitivity) break;
1082                 }
1083
1084                 b_frames= FFMAX(0, i-1);
1085
1086                 /* reset scores */
1087                 for(i=0; i<b_frames+1; i++){
1088                     s->input_picture[i]->b_frame_score=0;
1089                 }
1090             }else if(s->avctx->b_frame_strategy==2){
1091                 b_frames= estimate_best_b_count(s);
1092             }else{
1093                 av_log(s->avctx, AV_LOG_ERROR, "illegal b frame strategy\n");
1094                 b_frames=0;
1095             }
1096
1097             emms_c();
1098 //static int b_count=0;
1099 //b_count+= b_frames;
1100 //av_log(s->avctx, AV_LOG_DEBUG, "b_frames: %d\n", b_count);
1101
1102             for(i= b_frames - 1; i>=0; i--){
1103                 int type= s->input_picture[i]->pict_type;
1104                 if(type && type != B_TYPE)
1105                     b_frames= i;
1106             }
1107             if(s->input_picture[b_frames]->pict_type == B_TYPE && b_frames == s->max_b_frames){
1108                 av_log(s->avctx, AV_LOG_ERROR, "warning, too many b frames in a row\n");
1109             }
1110
1111             if(s->picture_in_gop_number + b_frames >= s->gop_size){
1112               if((s->flags2 & CODEC_FLAG2_STRICT_GOP) && s->gop_size > s->picture_in_gop_number){
1113                     b_frames= s->gop_size - s->picture_in_gop_number - 1;
1114               }else{
1115                 if(s->flags & CODEC_FLAG_CLOSED_GOP)
1116                     b_frames=0;
1117                 s->input_picture[b_frames]->pict_type= I_TYPE;
1118               }
1119             }
1120
1121             if(   (s->flags & CODEC_FLAG_CLOSED_GOP)
1122                && b_frames
1123                && s->input_picture[b_frames]->pict_type== I_TYPE)
1124                 b_frames--;
1125
1126             s->reordered_input_picture[0]= s->input_picture[b_frames];
1127             if(s->reordered_input_picture[0]->pict_type != I_TYPE)
1128                 s->reordered_input_picture[0]->pict_type= P_TYPE;
1129             s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
1130             for(i=0; i<b_frames; i++){
1131                 s->reordered_input_picture[i+1]= s->input_picture[i];
1132                 s->reordered_input_picture[i+1]->pict_type= B_TYPE;
1133                 s->reordered_input_picture[i+1]->coded_picture_number= s->coded_picture_number++;
1134             }
1135         }
1136     }
1137 no_output_pic:
1138     if(s->reordered_input_picture[0]){
1139         s->reordered_input_picture[0]->reference= s->reordered_input_picture[0]->pict_type!=B_TYPE ? 3 : 0;
1140
1141         copy_picture(&s->new_picture, s->reordered_input_picture[0]);
1142
1143         if(s->reordered_input_picture[0]->type == FF_BUFFER_TYPE_SHARED || s->avctx->rc_buffer_size){
1144             // input is a shared pix, so we can't modifiy it -> alloc a new one & ensure that the shared one is reuseable
1145
1146             int i= ff_find_unused_picture(s, 0);
1147             Picture *pic= &s->picture[i];
1148
1149             pic->reference              = s->reordered_input_picture[0]->reference;
1150             alloc_picture(s, pic, 0);
1151
1152             /* mark us unused / free shared pic */
1153             if(s->reordered_input_picture[0]->type == FF_BUFFER_TYPE_INTERNAL)
1154                 s->avctx->release_buffer(s->avctx, (AVFrame*)s->reordered_input_picture[0]);
1155             for(i=0; i<4; i++)
1156                 s->reordered_input_picture[0]->data[i]= NULL;
1157             s->reordered_input_picture[0]->type= 0;
1158
1159             copy_picture_attributes(s, (AVFrame*)pic, (AVFrame*)s->reordered_input_picture[0]);
1160
1161             s->current_picture_ptr= pic;
1162         }else{
1163             // input is not a shared pix -> reuse buffer for current_pix
1164
1165             assert(   s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_USER
1166                    || s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
1167
1168             s->current_picture_ptr= s->reordered_input_picture[0];
1169             for(i=0; i<4; i++){
1170                 s->new_picture.data[i]+= INPLACE_OFFSET;
1171             }
1172         }
1173         copy_picture(&s->current_picture, s->current_picture_ptr);
1174
1175         s->picture_number= s->new_picture.display_picture_number;
1176 //printf("dpn:%d\n", s->picture_number);
1177     }else{
1178        memset(&s->new_picture, 0, sizeof(Picture));
1179     }
1180 }
1181
1182 int MPV_encode_picture(AVCodecContext *avctx,
1183                        unsigned char *buf, int buf_size, void *data)
1184 {
1185     MpegEncContext *s = avctx->priv_data;
1186     AVFrame *pic_arg = data;
1187     int i, stuffing_count;
1188
1189     for(i=0; i<avctx->thread_count; i++){
1190         int start_y= s->thread_context[i]->start_mb_y;
1191         int   end_y= s->thread_context[i]->  end_mb_y;
1192         int h= s->mb_height;
1193         uint8_t *start= buf + (size_t)(((int64_t) buf_size)*start_y/h);
1194         uint8_t *end  = buf + (size_t)(((int64_t) buf_size)*  end_y/h);
1195
1196         init_put_bits(&s->thread_context[i]->pb, start, end - start);
1197     }
1198
1199     s->picture_in_gop_number++;
1200
1201     if(load_input_picture(s, pic_arg) < 0)
1202         return -1;
1203
1204     select_input_picture(s);
1205
1206     /* output? */
1207     if(s->new_picture.data[0]){
1208         s->pict_type= s->new_picture.pict_type;
1209 //emms_c();
1210 //printf("qs:%f %f %d\n", s->new_picture.quality, s->current_picture.quality, s->qscale);
1211         MPV_frame_start(s, avctx);
1212 vbv_retry:
1213         if (encode_picture(s, s->picture_number) < 0)
1214             return -1;
1215
1216         avctx->real_pict_num  = s->picture_number;
1217         avctx->header_bits = s->header_bits;
1218         avctx->mv_bits     = s->mv_bits;
1219         avctx->misc_bits   = s->misc_bits;
1220         avctx->i_tex_bits  = s->i_tex_bits;
1221         avctx->p_tex_bits  = s->p_tex_bits;
1222         avctx->i_count     = s->i_count;
1223         avctx->p_count     = s->mb_num - s->i_count - s->skip_count; //FIXME f/b_count in avctx
1224         avctx->skip_count  = s->skip_count;
1225
1226         MPV_frame_end(s);
1227
1228         if (ENABLE_MJPEG_ENCODER && s->out_format == FMT_MJPEG)
1229             ff_mjpeg_encode_picture_trailer(s);
1230
1231         if(avctx->rc_buffer_size){
1232             RateControlContext *rcc= &s->rc_context;
1233             int max_size= rcc->buffer_index/3;
1234
1235             if(put_bits_count(&s->pb) > max_size && s->lambda < s->avctx->lmax){
1236                 s->next_lambda= FFMAX(s->lambda+1, s->lambda*(s->qscale+1) / s->qscale);
1237                 if(s->adaptive_quant){
1238                     int i;
1239                     for(i=0; i<s->mb_height*s->mb_stride; i++)
1240                         s->lambda_table[i]= FFMAX(s->lambda_table[i]+1, s->lambda_table[i]*(s->qscale+1) / s->qscale);
1241                 }
1242                 s->mb_skipped = 0;        //done in MPV_frame_start()
1243                 if(s->pict_type==P_TYPE){ //done in encode_picture() so we must undo it
1244                     if(s->flipflop_rounding || s->codec_id == CODEC_ID_H263P || s->codec_id == CODEC_ID_MPEG4)
1245                         s->no_rounding ^= 1;
1246                 }
1247                 if(s->pict_type!=B_TYPE){
1248                     s->time_base= s->last_time_base;
1249                     s->last_non_b_time= s->time - s->pp_time;
1250                 }
1251 //                av_log(NULL, AV_LOG_ERROR, "R:%d ", s->next_lambda);
1252                 for(i=0; i<avctx->thread_count; i++){
1253                     PutBitContext *pb= &s->thread_context[i]->pb;
1254                     init_put_bits(pb, pb->buf, pb->buf_end - pb->buf);
1255                 }
1256                 goto vbv_retry;
1257             }
1258
1259             assert(s->avctx->rc_max_rate);
1260         }
1261
1262         if(s->flags&CODEC_FLAG_PASS1)
1263             ff_write_pass1_stats(s);
1264
1265         for(i=0; i<4; i++){
1266             s->current_picture_ptr->error[i]= s->current_picture.error[i];
1267             avctx->error[i] += s->current_picture_ptr->error[i];
1268         }
1269
1270         if(s->flags&CODEC_FLAG_PASS1)
1271             assert(avctx->header_bits + avctx->mv_bits + avctx->misc_bits + avctx->i_tex_bits + avctx->p_tex_bits == put_bits_count(&s->pb));
1272         flush_put_bits(&s->pb);
1273         s->frame_bits  = put_bits_count(&s->pb);
1274
1275         stuffing_count= ff_vbv_update(s, s->frame_bits);
1276         if(stuffing_count){
1277             if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < stuffing_count + 50){
1278                 av_log(s->avctx, AV_LOG_ERROR, "stuffing too large\n");
1279                 return -1;
1280             }
1281
1282             switch(s->codec_id){
1283             case CODEC_ID_MPEG1VIDEO:
1284             case CODEC_ID_MPEG2VIDEO:
1285                 while(stuffing_count--){
1286                     put_bits(&s->pb, 8, 0);
1287                 }
1288             break;
1289             case CODEC_ID_MPEG4:
1290                 put_bits(&s->pb, 16, 0);
1291                 put_bits(&s->pb, 16, 0x1C3);
1292                 stuffing_count -= 4;
1293                 while(stuffing_count--){
1294                     put_bits(&s->pb, 8, 0xFF);
1295                 }
1296             break;
1297             default:
1298                 av_log(s->avctx, AV_LOG_ERROR, "vbv buffer overflow\n");
1299             }
1300             flush_put_bits(&s->pb);
1301             s->frame_bits  = put_bits_count(&s->pb);
1302         }
1303
1304         /* update mpeg1/2 vbv_delay for CBR */
1305         if(s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate && s->out_format == FMT_MPEG1
1306            && 90000LL * (avctx->rc_buffer_size-1) <= s->avctx->rc_max_rate*0xFFFFLL){
1307             int vbv_delay;
1308
1309             assert(s->repeat_first_field==0);
1310
1311             vbv_delay= lrintf(90000 * s->rc_context.buffer_index / s->avctx->rc_max_rate);
1312             assert(vbv_delay < 0xFFFF);
1313
1314             s->vbv_delay_ptr[0] &= 0xF8;
1315             s->vbv_delay_ptr[0] |= vbv_delay>>13;
1316             s->vbv_delay_ptr[1]  = vbv_delay>>5;
1317             s->vbv_delay_ptr[2] &= 0x07;
1318             s->vbv_delay_ptr[2] |= vbv_delay<<3;
1319         }
1320         s->total_bits += s->frame_bits;
1321         avctx->frame_bits  = s->frame_bits;
1322     }else{
1323         assert((pbBufPtr(&s->pb) == s->pb.buf));
1324         s->frame_bits=0;
1325     }
1326     assert((s->frame_bits&7)==0);
1327
1328     return s->frame_bits/8;
1329 }
1330
1331 static inline void dct_single_coeff_elimination(MpegEncContext *s, int n, int threshold)
1332 {
1333     static const char tab[64]=
1334         {3,2,2,1,1,1,1,1,
1335          1,1,1,1,1,1,1,1,
1336          1,1,1,1,1,1,1,1,
1337          0,0,0,0,0,0,0,0,
1338          0,0,0,0,0,0,0,0,
1339          0,0,0,0,0,0,0,0,
1340          0,0,0,0,0,0,0,0,
1341          0,0,0,0,0,0,0,0};
1342     int score=0;
1343     int run=0;
1344     int i;
1345     DCTELEM *block= s->block[n];
1346     const int last_index= s->block_last_index[n];
1347     int skip_dc;
1348
1349     if(threshold<0){
1350         skip_dc=0;
1351         threshold= -threshold;
1352     }else
1353         skip_dc=1;
1354
1355     /* are all which we could set to zero are allready zero? */
1356     if(last_index<=skip_dc - 1) return;
1357
1358     for(i=0; i<=last_index; i++){
1359         const int j = s->intra_scantable.permutated[i];
1360         const int level = FFABS(block[j]);
1361         if(level==1){
1362             if(skip_dc && i==0) continue;
1363             score+= tab[run];
1364             run=0;
1365         }else if(level>1){
1366             return;
1367         }else{
1368             run++;
1369         }
1370     }
1371     if(score >= threshold) return;
1372     for(i=skip_dc; i<=last_index; i++){
1373         const int j = s->intra_scantable.permutated[i];
1374         block[j]=0;
1375     }
1376     if(block[0]) s->block_last_index[n]= 0;
1377     else         s->block_last_index[n]= -1;
1378 }
1379
1380 static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block, int last_index)
1381 {
1382     int i;
1383     const int maxlevel= s->max_qcoeff;
1384     const int minlevel= s->min_qcoeff;
1385     int overflow=0;
1386
1387     if(s->mb_intra){
1388         i=1; //skip clipping of intra dc
1389     }else
1390         i=0;
1391
1392     for(;i<=last_index; i++){
1393         const int j= s->intra_scantable.permutated[i];
1394         int level = block[j];
1395
1396         if     (level>maxlevel){
1397             level=maxlevel;
1398             overflow++;
1399         }else if(level<minlevel){
1400             level=minlevel;
1401             overflow++;
1402         }
1403
1404         block[j]= level;
1405     }
1406
1407     if(overflow && s->avctx->mb_decision == FF_MB_DECISION_SIMPLE)
1408         av_log(s->avctx, AV_LOG_INFO, "warning, clipping %d dct coefficients to %d..%d\n", overflow, minlevel, maxlevel);
1409 }
1410
1411 static void get_vissual_weight(int16_t *weight, uint8_t *ptr, int stride){
1412     int x, y;
1413 //FIXME optimize
1414     for(y=0; y<8; y++){
1415         for(x=0; x<8; x++){
1416             int x2, y2;
1417             int sum=0;
1418             int sqr=0;
1419             int count=0;
1420
1421             for(y2= FFMAX(y-1, 0); y2 < FFMIN(8, y+2); y2++){
1422                 for(x2= FFMAX(x-1, 0); x2 < FFMIN(8, x+2); x2++){
1423                     int v= ptr[x2 + y2*stride];
1424                     sum += v;
1425                     sqr += v*v;
1426                     count++;
1427                 }
1428             }
1429             weight[x + 8*y]= (36*ff_sqrt(count*sqr - sum*sum)) / count;
1430         }
1431     }
1432 }
1433
1434 static av_always_inline void encode_mb_internal(MpegEncContext *s, int motion_x, int motion_y, int mb_block_height, int mb_block_count)
1435 {
1436     int16_t weight[8][64];
1437     DCTELEM orig[8][64];
1438     const int mb_x= s->mb_x;
1439     const int mb_y= s->mb_y;
1440     int i;
1441     int skip_dct[8];
1442     int dct_offset   = s->linesize*8; //default for progressive frames
1443     uint8_t *ptr_y, *ptr_cb, *ptr_cr;
1444     int wrap_y, wrap_c;
1445
1446     for(i=0; i<mb_block_count; i++) skip_dct[i]=s->skipdct;
1447
1448     if(s->adaptive_quant){
1449         const int last_qp= s->qscale;
1450         const int mb_xy= mb_x + mb_y*s->mb_stride;
1451
1452         s->lambda= s->lambda_table[mb_xy];
1453         update_qscale(s);
1454
1455         if(!(s->flags&CODEC_FLAG_QP_RD)){
1456             s->qscale= s->current_picture_ptr->qscale_table[mb_xy];
1457             s->dquant= s->qscale - last_qp;
1458
1459             if(s->out_format==FMT_H263){
1460                 s->dquant= av_clip(s->dquant, -2, 2);
1461
1462                 if(s->codec_id==CODEC_ID_MPEG4){
1463                     if(!s->mb_intra){
1464                         if(s->pict_type == B_TYPE){
1465                             if(s->dquant&1 || s->mv_dir&MV_DIRECT)
1466                                 s->dquant= 0;
1467                         }
1468                         if(s->mv_type==MV_TYPE_8X8)
1469                             s->dquant=0;
1470                     }
1471                 }
1472             }
1473         }
1474         ff_set_qscale(s, last_qp + s->dquant);
1475     }else if(s->flags&CODEC_FLAG_QP_RD)
1476         ff_set_qscale(s, s->qscale + s->dquant);
1477
1478     wrap_y = s->linesize;
1479     wrap_c = s->uvlinesize;
1480     ptr_y = s->new_picture.data[0] + (mb_y * 16 * wrap_y) + mb_x * 16;
1481     ptr_cb = s->new_picture.data[1] + (mb_y * mb_block_height * wrap_c) + mb_x * 8;
1482     ptr_cr = s->new_picture.data[2] + (mb_y * mb_block_height * wrap_c) + mb_x * 8;
1483
1484     if(mb_x*16+16 > s->width || mb_y*16+16 > s->height){
1485         uint8_t *ebuf= s->edge_emu_buffer + 32;
1486         ff_emulated_edge_mc(ebuf            , ptr_y , wrap_y,16,16,mb_x*16,mb_y*16, s->width   , s->height);
1487         ptr_y= ebuf;
1488         ff_emulated_edge_mc(ebuf+18*wrap_y  , ptr_cb, wrap_c, 8, mb_block_height, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
1489         ptr_cb= ebuf+18*wrap_y;
1490         ff_emulated_edge_mc(ebuf+18*wrap_y+8, ptr_cr, wrap_c, 8, mb_block_height, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
1491         ptr_cr= ebuf+18*wrap_y+8;
1492     }
1493
1494     if (s->mb_intra) {
1495         if(s->flags&CODEC_FLAG_INTERLACED_DCT){
1496             int progressive_score, interlaced_score;
1497
1498             s->interlaced_dct=0;
1499             progressive_score= s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y, 8)
1500                               +s->dsp.ildct_cmp[4](s, ptr_y + wrap_y*8, NULL, wrap_y, 8) - 400;
1501
1502             if(progressive_score > 0){
1503                 interlaced_score = s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y*2, 8)
1504                                   +s->dsp.ildct_cmp[4](s, ptr_y + wrap_y  , NULL, wrap_y*2, 8);
1505                 if(progressive_score > interlaced_score){
1506                     s->interlaced_dct=1;
1507
1508                     dct_offset= wrap_y;
1509                     wrap_y<<=1;
1510                     if (s->chroma_format == CHROMA_422)
1511                         wrap_c<<=1;
1512                 }
1513             }
1514         }
1515
1516         s->dsp.get_pixels(s->block[0], ptr_y                 , wrap_y);
1517         s->dsp.get_pixels(s->block[1], ptr_y              + 8, wrap_y);
1518         s->dsp.get_pixels(s->block[2], ptr_y + dct_offset    , wrap_y);
1519         s->dsp.get_pixels(s->block[3], ptr_y + dct_offset + 8, wrap_y);
1520
1521         if(s->flags&CODEC_FLAG_GRAY){
1522             skip_dct[4]= 1;
1523             skip_dct[5]= 1;
1524         }else{
1525             s->dsp.get_pixels(s->block[4], ptr_cb, wrap_c);
1526             s->dsp.get_pixels(s->block[5], ptr_cr, wrap_c);
1527             if(!s->chroma_y_shift){ /* 422 */
1528                 s->dsp.get_pixels(s->block[6], ptr_cb + (dct_offset>>1), wrap_c);
1529                 s->dsp.get_pixels(s->block[7], ptr_cr + (dct_offset>>1), wrap_c);
1530             }
1531         }
1532     }else{
1533         op_pixels_func (*op_pix)[4];
1534         qpel_mc_func (*op_qpix)[16];
1535         uint8_t *dest_y, *dest_cb, *dest_cr;
1536
1537         dest_y  = s->dest[0];
1538         dest_cb = s->dest[1];
1539         dest_cr = s->dest[2];
1540
1541         if ((!s->no_rounding) || s->pict_type==B_TYPE){
1542             op_pix = s->dsp.put_pixels_tab;
1543             op_qpix= s->dsp.put_qpel_pixels_tab;
1544         }else{
1545             op_pix = s->dsp.put_no_rnd_pixels_tab;
1546             op_qpix= s->dsp.put_no_rnd_qpel_pixels_tab;
1547         }
1548
1549         if (s->mv_dir & MV_DIR_FORWARD) {
1550             MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix, op_qpix);
1551             op_pix = s->dsp.avg_pixels_tab;
1552             op_qpix= s->dsp.avg_qpel_pixels_tab;
1553         }
1554         if (s->mv_dir & MV_DIR_BACKWARD) {
1555             MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix, op_qpix);
1556         }
1557
1558         if(s->flags&CODEC_FLAG_INTERLACED_DCT){
1559             int progressive_score, interlaced_score;
1560
1561             s->interlaced_dct=0;
1562             progressive_score= s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y, 8)
1563                               +s->dsp.ildct_cmp[0](s, dest_y + wrap_y*8, ptr_y + wrap_y*8, wrap_y, 8) - 400;
1564
1565             if(s->avctx->ildct_cmp == FF_CMP_VSSE) progressive_score -= 400;
1566
1567             if(progressive_score>0){
1568                 interlaced_score = s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y*2, 8)
1569                                   +s->dsp.ildct_cmp[0](s, dest_y + wrap_y  , ptr_y + wrap_y  , wrap_y*2, 8);
1570
1571                 if(progressive_score > interlaced_score){
1572                     s->interlaced_dct=1;
1573
1574                     dct_offset= wrap_y;
1575                     wrap_y<<=1;
1576                     if (s->chroma_format == CHROMA_422)
1577                         wrap_c<<=1;
1578                 }
1579             }
1580         }
1581
1582         s->dsp.diff_pixels(s->block[0], ptr_y                 , dest_y                 , wrap_y);
1583         s->dsp.diff_pixels(s->block[1], ptr_y              + 8, dest_y              + 8, wrap_y);
1584         s->dsp.diff_pixels(s->block[2], ptr_y + dct_offset    , dest_y + dct_offset    , wrap_y);
1585         s->dsp.diff_pixels(s->block[3], ptr_y + dct_offset + 8, dest_y + dct_offset + 8, wrap_y);
1586
1587         if(s->flags&CODEC_FLAG_GRAY){
1588             skip_dct[4]= 1;
1589             skip_dct[5]= 1;
1590         }else{
1591             s->dsp.diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
1592             s->dsp.diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
1593             if(!s->chroma_y_shift){ /* 422 */
1594                 s->dsp.diff_pixels(s->block[6], ptr_cb + (dct_offset>>1), dest_cb + (dct_offset>>1), wrap_c);
1595                 s->dsp.diff_pixels(s->block[7], ptr_cr + (dct_offset>>1), dest_cr + (dct_offset>>1), wrap_c);
1596             }
1597         }
1598         /* pre quantization */
1599         if(s->current_picture.mc_mb_var[s->mb_stride*mb_y+ mb_x]<2*s->qscale*s->qscale){
1600             //FIXME optimize
1601             if(s->dsp.sad[1](NULL, ptr_y               , dest_y               , wrap_y, 8) < 20*s->qscale) skip_dct[0]= 1;
1602             if(s->dsp.sad[1](NULL, ptr_y            + 8, dest_y            + 8, wrap_y, 8) < 20*s->qscale) skip_dct[1]= 1;
1603             if(s->dsp.sad[1](NULL, ptr_y +dct_offset   , dest_y +dct_offset   , wrap_y, 8) < 20*s->qscale) skip_dct[2]= 1;
1604             if(s->dsp.sad[1](NULL, ptr_y +dct_offset+ 8, dest_y +dct_offset+ 8, wrap_y, 8) < 20*s->qscale) skip_dct[3]= 1;
1605             if(s->dsp.sad[1](NULL, ptr_cb              , dest_cb              , wrap_c, 8) < 20*s->qscale) skip_dct[4]= 1;
1606             if(s->dsp.sad[1](NULL, ptr_cr              , dest_cr              , wrap_c, 8) < 20*s->qscale) skip_dct[5]= 1;
1607             if(!s->chroma_y_shift){ /* 422 */
1608                 if(s->dsp.sad[1](NULL, ptr_cb +(dct_offset>>1), dest_cb +(dct_offset>>1), wrap_c, 8) < 20*s->qscale) skip_dct[6]= 1;
1609                 if(s->dsp.sad[1](NULL, ptr_cr +(dct_offset>>1), dest_cr +(dct_offset>>1), wrap_c, 8) < 20*s->qscale) skip_dct[7]= 1;
1610             }
1611         }
1612     }
1613
1614     if(s->avctx->quantizer_noise_shaping){
1615         if(!skip_dct[0]) get_vissual_weight(weight[0], ptr_y                 , wrap_y);
1616         if(!skip_dct[1]) get_vissual_weight(weight[1], ptr_y              + 8, wrap_y);
1617         if(!skip_dct[2]) get_vissual_weight(weight[2], ptr_y + dct_offset    , wrap_y);
1618         if(!skip_dct[3]) get_vissual_weight(weight[3], ptr_y + dct_offset + 8, wrap_y);
1619         if(!skip_dct[4]) get_vissual_weight(weight[4], ptr_cb                , wrap_c);
1620         if(!skip_dct[5]) get_vissual_weight(weight[5], ptr_cr                , wrap_c);
1621         if(!s->chroma_y_shift){ /* 422 */
1622             if(!skip_dct[6]) get_vissual_weight(weight[6], ptr_cb + (dct_offset>>1), wrap_c);
1623             if(!skip_dct[7]) get_vissual_weight(weight[7], ptr_cr + (dct_offset>>1), wrap_c);
1624         }
1625         memcpy(orig[0], s->block[0], sizeof(DCTELEM)*64*mb_block_count);
1626     }
1627
1628     /* DCT & quantize */
1629     assert(s->out_format!=FMT_MJPEG || s->qscale==8);
1630     {
1631         for(i=0;i<mb_block_count;i++) {
1632             if(!skip_dct[i]){
1633                 int overflow;
1634                 s->block_last_index[i] = s->dct_quantize(s, s->block[i], i, s->qscale, &overflow);
1635             // FIXME we could decide to change to quantizer instead of clipping
1636             // JS: I don't think that would be a good idea it could lower quality instead
1637             //     of improve it. Just INTRADC clipping deserves changes in quantizer
1638                 if (overflow) clip_coeffs(s, s->block[i], s->block_last_index[i]);
1639             }else
1640                 s->block_last_index[i]= -1;
1641         }
1642         if(s->avctx->quantizer_noise_shaping){
1643             for(i=0;i<mb_block_count;i++) {
1644                 if(!skip_dct[i]){
1645                     s->block_last_index[i] = dct_quantize_refine(s, s->block[i], weight[i], orig[i], i, s->qscale);
1646                 }
1647             }
1648         }
1649
1650         if(s->luma_elim_threshold && !s->mb_intra)
1651             for(i=0; i<4; i++)
1652                 dct_single_coeff_elimination(s, i, s->luma_elim_threshold);
1653         if(s->chroma_elim_threshold && !s->mb_intra)
1654             for(i=4; i<mb_block_count; i++)
1655                 dct_single_coeff_elimination(s, i, s->chroma_elim_threshold);
1656
1657         if(s->flags & CODEC_FLAG_CBP_RD){
1658             for(i=0;i<mb_block_count;i++) {
1659                 if(s->block_last_index[i] == -1)
1660                     s->coded_score[i]= INT_MAX/256;
1661             }
1662         }
1663     }
1664
1665     if((s->flags&CODEC_FLAG_GRAY) && s->mb_intra){
1666         s->block_last_index[4]=
1667         s->block_last_index[5]= 0;
1668         s->block[4][0]=
1669         s->block[5][0]= (1024 + s->c_dc_scale/2)/ s->c_dc_scale;
1670     }
1671
1672     //non c quantize code returns incorrect block_last_index FIXME
1673     if(s->alternate_scan && s->dct_quantize != dct_quantize_c){
1674         for(i=0; i<mb_block_count; i++){
1675             int j;
1676             if(s->block_last_index[i]>0){
1677                 for(j=63; j>0; j--){
1678                     if(s->block[i][ s->intra_scantable.permutated[j] ]) break;
1679                 }
1680                 s->block_last_index[i]= j;
1681             }
1682         }
1683     }
1684
1685     /* huffman encode */
1686     switch(s->codec_id){ //FIXME funct ptr could be slightly faster
1687     case CODEC_ID_MPEG1VIDEO:
1688     case CODEC_ID_MPEG2VIDEO:
1689         if (ENABLE_MPEG1VIDEO_ENCODER || ENABLE_MPEG2VIDEO_ENCODER)
1690             mpeg1_encode_mb(s, s->block, motion_x, motion_y);
1691         break;
1692     case CODEC_ID_MPEG4:
1693         mpeg4_encode_mb(s, s->block, motion_x, motion_y); break;
1694     case CODEC_ID_MSMPEG4V2:
1695     case CODEC_ID_MSMPEG4V3:
1696     case CODEC_ID_WMV1:
1697         if (ENABLE_MSMPEG4_ENCODER)
1698             msmpeg4_encode_mb(s, s->block, motion_x, motion_y);
1699         break;
1700     case CODEC_ID_WMV2:
1701         if (ENABLE_WMV2_ENCODER)
1702             ff_wmv2_encode_mb(s, s->block, motion_x, motion_y);
1703         break;
1704     case CODEC_ID_H261:
1705         if (ENABLE_H261_ENCODER)
1706             ff_h261_encode_mb(s, s->block, motion_x, motion_y);
1707         break;
1708     case CODEC_ID_H263:
1709     case CODEC_ID_H263P:
1710     case CODEC_ID_FLV1:
1711     case CODEC_ID_RV10:
1712     case CODEC_ID_RV20:
1713         h263_encode_mb(s, s->block, motion_x, motion_y); break;
1714     case CODEC_ID_MJPEG:
1715         if (ENABLE_MJPEG_ENCODER)
1716             ff_mjpeg_encode_mb(s, s->block);
1717         break;
1718     default:
1719         assert(0);
1720     }
1721 }
1722
1723 static av_always_inline void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
1724 {
1725     if (s->chroma_format == CHROMA_420) encode_mb_internal(s, motion_x, motion_y,  8, 6);
1726     else                                encode_mb_internal(s, motion_x, motion_y, 16, 8);
1727 }
1728
1729 void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length)
1730 {
1731     const uint16_t *srcw= (uint16_t*)src;
1732     int words= length>>4;
1733     int bits= length&15;
1734     int i;
1735
1736     if(length==0) return;
1737
1738     if(words < 16){
1739         for(i=0; i<words; i++) put_bits(pb, 16, be2me_16(srcw[i]));
1740     }else if(put_bits_count(pb)&7){
1741         for(i=0; i<words; i++) put_bits(pb, 16, be2me_16(srcw[i]));
1742     }else{
1743         for(i=0; put_bits_count(pb)&31; i++)
1744             put_bits(pb, 8, src[i]);
1745         flush_put_bits(pb);
1746         memcpy(pbBufPtr(pb), src+i, 2*words-i);
1747         skip_put_bytes(pb, 2*words-i);
1748     }
1749
1750     put_bits(pb, bits, be2me_16(srcw[words])>>(16-bits));
1751 }
1752
1753 static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type){
1754     int i;
1755
1756     memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
1757
1758     /* mpeg1 */
1759     d->mb_skip_run= s->mb_skip_run;
1760     for(i=0; i<3; i++)
1761         d->last_dc[i]= s->last_dc[i];
1762
1763     /* statistics */
1764     d->mv_bits= s->mv_bits;
1765     d->i_tex_bits= s->i_tex_bits;
1766     d->p_tex_bits= s->p_tex_bits;
1767     d->i_count= s->i_count;
1768     d->f_count= s->f_count;
1769     d->b_count= s->b_count;
1770     d->skip_count= s->skip_count;
1771     d->misc_bits= s->misc_bits;
1772     d->last_bits= 0;
1773
1774     d->mb_skipped= 0;
1775     d->qscale= s->qscale;
1776     d->dquant= s->dquant;
1777 }
1778
1779 static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int type){
1780     int i;
1781
1782     memcpy(d->mv, s->mv, 2*4*2*sizeof(int));
1783     memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
1784
1785     /* mpeg1 */
1786     d->mb_skip_run= s->mb_skip_run;
1787     for(i=0; i<3; i++)
1788         d->last_dc[i]= s->last_dc[i];
1789
1790     /* statistics */
1791     d->mv_bits= s->mv_bits;
1792     d->i_tex_bits= s->i_tex_bits;
1793     d->p_tex_bits= s->p_tex_bits;
1794     d->i_count= s->i_count;
1795     d->f_count= s->f_count;
1796     d->b_count= s->b_count;
1797     d->skip_count= s->skip_count;
1798     d->misc_bits= s->misc_bits;
1799
1800     d->mb_intra= s->mb_intra;
1801     d->mb_skipped= s->mb_skipped;
1802     d->mv_type= s->mv_type;
1803     d->mv_dir= s->mv_dir;
1804     d->pb= s->pb;
1805     if(s->data_partitioning){
1806         d->pb2= s->pb2;
1807         d->tex_pb= s->tex_pb;
1808     }
1809     d->block= s->block;
1810     for(i=0; i<8; i++)
1811         d->block_last_index[i]= s->block_last_index[i];
1812     d->interlaced_dct= s->interlaced_dct;
1813     d->qscale= s->qscale;
1814 }
1815
1816 static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type,
1817                            PutBitContext pb[2], PutBitContext pb2[2], PutBitContext tex_pb[2],
1818                            int *dmin, int *next_block, int motion_x, int motion_y)
1819 {
1820     int score;
1821     uint8_t *dest_backup[3];
1822
1823     copy_context_before_encode(s, backup, type);
1824
1825     s->block= s->blocks[*next_block];
1826     s->pb= pb[*next_block];
1827     if(s->data_partitioning){
1828         s->pb2   = pb2   [*next_block];
1829         s->tex_pb= tex_pb[*next_block];
1830     }
1831
1832     if(*next_block){
1833         memcpy(dest_backup, s->dest, sizeof(s->dest));
1834         s->dest[0] = s->rd_scratchpad;
1835         s->dest[1] = s->rd_scratchpad + 16*s->linesize;
1836         s->dest[2] = s->rd_scratchpad + 16*s->linesize + 8;
1837         assert(s->linesize >= 32); //FIXME
1838     }
1839
1840     encode_mb(s, motion_x, motion_y);
1841
1842     score= put_bits_count(&s->pb);
1843     if(s->data_partitioning){
1844         score+= put_bits_count(&s->pb2);
1845         score+= put_bits_count(&s->tex_pb);
1846     }
1847
1848     if(s->avctx->mb_decision == FF_MB_DECISION_RD){
1849         MPV_decode_mb(s, s->block);
1850
1851         score *= s->lambda2;
1852         score += sse_mb(s) << FF_LAMBDA_SHIFT;
1853     }
1854
1855     if(*next_block){
1856         memcpy(s->dest, dest_backup, sizeof(s->dest));
1857     }
1858
1859     if(score<*dmin){
1860         *dmin= score;
1861         *next_block^=1;
1862
1863         copy_context_after_encode(best, s, type);
1864     }
1865 }
1866
1867 static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride){
1868     uint32_t *sq = ff_squareTbl + 256;
1869     int acc=0;
1870     int x,y;
1871
1872     if(w==16 && h==16)
1873         return s->dsp.sse[0](NULL, src1, src2, stride, 16);
1874     else if(w==8 && h==8)
1875         return s->dsp.sse[1](NULL, src1, src2, stride, 8);
1876
1877     for(y=0; y<h; y++){
1878         for(x=0; x<w; x++){
1879             acc+= sq[src1[x + y*stride] - src2[x + y*stride]];
1880         }
1881     }
1882
1883     assert(acc>=0);
1884
1885     return acc;
1886 }
1887
1888 static int sse_mb(MpegEncContext *s){
1889     int w= 16;
1890     int h= 16;
1891
1892     if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
1893     if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
1894
1895     if(w==16 && h==16)
1896       if(s->avctx->mb_cmp == FF_CMP_NSSE){
1897         return  s->dsp.nsse[0](s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], s->linesize, 16)
1898                +s->dsp.nsse[1](s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], s->uvlinesize, 8)
1899                +s->dsp.nsse[1](s, s->new_picture.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], s->uvlinesize, 8);
1900       }else{
1901         return  s->dsp.sse[0](NULL, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], s->linesize, 16)
1902                +s->dsp.sse[1](NULL, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], s->uvlinesize, 8)
1903                +s->dsp.sse[1](NULL, s->new_picture.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], s->uvlinesize, 8);
1904       }
1905     else
1906         return  sse(s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], w, h, s->linesize)
1907                +sse(s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], w>>1, h>>1, s->uvlinesize)
1908                +sse(s, s->new_picture.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], w>>1, h>>1, s->uvlinesize);
1909 }
1910
1911 static int pre_estimate_motion_thread(AVCodecContext *c, void *arg){
1912     MpegEncContext *s= arg;
1913
1914
1915     s->me.pre_pass=1;
1916     s->me.dia_size= s->avctx->pre_dia_size;
1917     s->first_slice_line=1;
1918     for(s->mb_y= s->end_mb_y-1; s->mb_y >= s->start_mb_y; s->mb_y--) {
1919         for(s->mb_x=s->mb_width-1; s->mb_x >=0 ;s->mb_x--) {
1920             ff_pre_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
1921         }
1922         s->first_slice_line=0;
1923     }
1924
1925     s->me.pre_pass=0;
1926
1927     return 0;
1928 }
1929
1930 static int estimate_motion_thread(AVCodecContext *c, void *arg){
1931     MpegEncContext *s= arg;
1932
1933     ff_check_alignment();
1934
1935     s->me.dia_size= s->avctx->dia_size;
1936     s->first_slice_line=1;
1937     for(s->mb_y= s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
1938         s->mb_x=0; //for block init below
1939         ff_init_block_index(s);
1940         for(s->mb_x=0; s->mb_x < s->mb_width; s->mb_x++) {
1941             s->block_index[0]+=2;
1942             s->block_index[1]+=2;
1943             s->block_index[2]+=2;
1944             s->block_index[3]+=2;
1945
1946             /* compute motion vector & mb_type and store in context */
1947             if(s->pict_type==B_TYPE)
1948                 ff_estimate_b_frame_motion(s, s->mb_x, s->mb_y);
1949             else
1950                 ff_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
1951         }
1952         s->first_slice_line=0;
1953     }
1954     return 0;
1955 }
1956
1957 static int mb_var_thread(AVCodecContext *c, void *arg){
1958     MpegEncContext *s= arg;
1959     int mb_x, mb_y;
1960
1961     ff_check_alignment();
1962
1963     for(mb_y=s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
1964         for(mb_x=0; mb_x < s->mb_width; mb_x++) {
1965             int xx = mb_x * 16;
1966             int yy = mb_y * 16;
1967             uint8_t *pix = s->new_picture.data[0] + (yy * s->linesize) + xx;
1968             int varc;
1969             int sum = s->dsp.pix_sum(pix, s->linesize);
1970
1971             varc = (s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)(sum*sum))>>8) + 500 + 128)>>8;
1972
1973             s->current_picture.mb_var [s->mb_stride * mb_y + mb_x] = varc;
1974             s->current_picture.mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8;
1975             s->me.mb_var_sum_temp    += varc;
1976         }
1977     }
1978     return 0;
1979 }
1980
1981 static void write_slice_end(MpegEncContext *s){
1982     if(s->codec_id==CODEC_ID_MPEG4){
1983         if(s->partitioned_frame){
1984             ff_mpeg4_merge_partitions(s);
1985         }
1986
1987         ff_mpeg4_stuffing(&s->pb);
1988     }else if(ENABLE_MJPEG_ENCODER && s->out_format == FMT_MJPEG){
1989         ff_mjpeg_encode_stuffing(&s->pb);
1990     }
1991
1992     align_put_bits(&s->pb);
1993     flush_put_bits(&s->pb);
1994
1995     if((s->flags&CODEC_FLAG_PASS1) && !s->partitioned_frame)
1996         s->misc_bits+= get_bits_diff(s);
1997 }
1998
1999 static int encode_thread(AVCodecContext *c, void *arg){
2000     MpegEncContext *s= arg;
2001     int mb_x, mb_y, pdif = 0;
2002     int i, j;
2003     MpegEncContext best_s, backup_s;
2004     uint8_t bit_buf[2][MAX_MB_BYTES];
2005     uint8_t bit_buf2[2][MAX_MB_BYTES];
2006     uint8_t bit_buf_tex[2][MAX_MB_BYTES];
2007     PutBitContext pb[2], pb2[2], tex_pb[2];
2008 //printf("%d->%d\n", s->resync_mb_y, s->end_mb_y);
2009
2010     ff_check_alignment();
2011
2012     for(i=0; i<2; i++){
2013         init_put_bits(&pb    [i], bit_buf    [i], MAX_MB_BYTES);
2014         init_put_bits(&pb2   [i], bit_buf2   [i], MAX_MB_BYTES);
2015         init_put_bits(&tex_pb[i], bit_buf_tex[i], MAX_MB_BYTES);
2016     }
2017
2018     s->last_bits= put_bits_count(&s->pb);
2019     s->mv_bits=0;
2020     s->misc_bits=0;
2021     s->i_tex_bits=0;
2022     s->p_tex_bits=0;
2023     s->i_count=0;
2024     s->f_count=0;
2025     s->b_count=0;
2026     s->skip_count=0;
2027
2028     for(i=0; i<3; i++){
2029         /* init last dc values */
2030         /* note: quant matrix value (8) is implied here */
2031         s->last_dc[i] = 128 << s->intra_dc_precision;
2032
2033         s->current_picture.error[i] = 0;
2034     }
2035     s->mb_skip_run = 0;
2036     memset(s->last_mv, 0, sizeof(s->last_mv));
2037
2038     s->last_mv_dir = 0;
2039
2040     switch(s->codec_id){
2041     case CODEC_ID_H263:
2042     case CODEC_ID_H263P:
2043     case CODEC_ID_FLV1:
2044         s->gob_index = ff_h263_get_gob_height(s);
2045         break;
2046     case CODEC_ID_MPEG4:
2047         if(s->partitioned_frame)
2048             ff_mpeg4_init_partitions(s);
2049         break;
2050     }
2051
2052     s->resync_mb_x=0;
2053     s->resync_mb_y=0;
2054     s->first_slice_line = 1;
2055     s->ptr_lastgob = s->pb.buf;
2056     for(mb_y= s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
2057 //    printf("row %d at %X\n", s->mb_y, (int)s);
2058         s->mb_x=0;
2059         s->mb_y= mb_y;
2060
2061         ff_set_qscale(s, s->qscale);
2062         ff_init_block_index(s);
2063
2064         for(mb_x=0; mb_x < s->mb_width; mb_x++) {
2065             int xy= mb_y*s->mb_stride + mb_x; // removed const, H261 needs to adjust this
2066             int mb_type= s->mb_type[xy];
2067 //            int d;
2068             int dmin= INT_MAX;
2069             int dir;
2070
2071             if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < MAX_MB_BYTES){
2072                 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
2073                 return -1;
2074             }
2075             if(s->data_partitioning){
2076                 if(   s->pb2   .buf_end - s->pb2   .buf - (put_bits_count(&s->    pb2)>>3) < MAX_MB_BYTES
2077                    || s->tex_pb.buf_end - s->tex_pb.buf - (put_bits_count(&s->tex_pb )>>3) < MAX_MB_BYTES){
2078                     av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
2079                     return -1;
2080                 }
2081             }
2082
2083             s->mb_x = mb_x;
2084             s->mb_y = mb_y;  // moved into loop, can get changed by H.261
2085             ff_update_block_index(s);
2086
2087             if(ENABLE_H261_ENCODER && s->codec_id == CODEC_ID_H261){
2088                 ff_h261_reorder_mb_index(s);
2089                 xy= s->mb_y*s->mb_stride + s->mb_x;
2090                 mb_type= s->mb_type[xy];
2091             }
2092
2093             /* write gob / video packet header  */
2094             if(s->rtp_mode){
2095                 int current_packet_size, is_gob_start;
2096
2097                 current_packet_size= ((put_bits_count(&s->pb)+7)>>3) - (s->ptr_lastgob - s->pb.buf);
2098
2099                 is_gob_start= s->avctx->rtp_payload_size && current_packet_size >= s->avctx->rtp_payload_size && mb_y + mb_x>0;
2100
2101                 if(s->start_mb_y == mb_y && mb_y > 0 && mb_x==0) is_gob_start=1;
2102
2103                 switch(s->codec_id){
2104                 case CODEC_ID_H263:
2105                 case CODEC_ID_H263P:
2106                     if(!s->h263_slice_structured)
2107                         if(s->mb_x || s->mb_y%s->gob_index) is_gob_start=0;
2108                     break;
2109                 case CODEC_ID_MPEG2VIDEO:
2110                     if(s->mb_x==0 && s->mb_y!=0) is_gob_start=1;
2111                 case CODEC_ID_MPEG1VIDEO:
2112                     if(s->mb_skip_run) is_gob_start=0;
2113                     break;
2114                 }
2115
2116                 if(is_gob_start){
2117                     if(s->start_mb_y != mb_y || mb_x!=0){
2118                         write_slice_end(s);
2119
2120                         if(s->codec_id==CODEC_ID_MPEG4 && s->partitioned_frame){
2121                             ff_mpeg4_init_partitions(s);
2122                         }
2123                     }
2124
2125                     assert((put_bits_count(&s->pb)&7) == 0);
2126                     current_packet_size= pbBufPtr(&s->pb) - s->ptr_lastgob;
2127
2128                     if(s->avctx->error_rate && s->resync_mb_x + s->resync_mb_y > 0){
2129                         int r= put_bits_count(&s->pb)/8 + s->picture_number + 16 + s->mb_x + s->mb_y;
2130                         int d= 100 / s->avctx->error_rate;
2131                         if(r % d == 0){
2132                             current_packet_size=0;
2133 #ifndef ALT_BITSTREAM_WRITER
2134                             s->pb.buf_ptr= s->ptr_lastgob;
2135 #endif
2136                             assert(pbBufPtr(&s->pb) == s->ptr_lastgob);
2137                         }
2138                     }
2139
2140                     if (s->avctx->rtp_callback){
2141                         int number_mb = (mb_y - s->resync_mb_y)*s->mb_width + mb_x - s->resync_mb_x;
2142                         s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, current_packet_size, number_mb);
2143                     }
2144
2145                     switch(s->codec_id){
2146                     case CODEC_ID_MPEG4:
2147                         ff_mpeg4_encode_video_packet_header(s);
2148                         ff_mpeg4_clean_buffers(s);
2149                     break;
2150                     case CODEC_ID_MPEG1VIDEO:
2151                     case CODEC_ID_MPEG2VIDEO:
2152                         if (ENABLE_MPEG1VIDEO_ENCODER || ENABLE_MPEG2VIDEO_ENCODER) {
2153                             ff_mpeg1_encode_slice_header(s);
2154                             ff_mpeg1_clean_buffers(s);
2155                         }
2156                     break;
2157                     case CODEC_ID_H263:
2158                     case CODEC_ID_H263P:
2159                         h263_encode_gob_header(s, mb_y);
2160                     break;
2161                     }
2162
2163                     if(s->flags&CODEC_FLAG_PASS1){
2164                         int bits= put_bits_count(&s->pb);
2165                         s->misc_bits+= bits - s->last_bits;
2166                         s->last_bits= bits;
2167                     }
2168
2169                     s->ptr_lastgob += current_packet_size;
2170                     s->first_slice_line=1;
2171                     s->resync_mb_x=mb_x;
2172                     s->resync_mb_y=mb_y;
2173                 }
2174             }
2175
2176             if(  (s->resync_mb_x   == s->mb_x)
2177                && s->resync_mb_y+1 == s->mb_y){
2178                 s->first_slice_line=0;
2179             }
2180
2181             s->mb_skipped=0;
2182             s->dquant=0; //only for QP_RD
2183
2184             if(mb_type & (mb_type-1) || (s->flags & CODEC_FLAG_QP_RD)){ // more than 1 MB type possible or CODEC_FLAG_QP_RD
2185                 int next_block=0;
2186                 int pb_bits_count, pb2_bits_count, tex_pb_bits_count;
2187
2188                 copy_context_before_encode(&backup_s, s, -1);
2189                 backup_s.pb= s->pb;
2190                 best_s.data_partitioning= s->data_partitioning;
2191                 best_s.partitioned_frame= s->partitioned_frame;
2192                 if(s->data_partitioning){
2193                     backup_s.pb2= s->pb2;
2194                     backup_s.tex_pb= s->tex_pb;
2195                 }
2196
2197                 if(mb_type&CANDIDATE_MB_TYPE_INTER){
2198                     s->mv_dir = MV_DIR_FORWARD;
2199                     s->mv_type = MV_TYPE_16X16;
2200                     s->mb_intra= 0;
2201                     s->mv[0][0][0] = s->p_mv_table[xy][0];
2202                     s->mv[0][0][1] = s->p_mv_table[xy][1];
2203                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER, pb, pb2, tex_pb,
2204                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
2205                 }
2206                 if(mb_type&CANDIDATE_MB_TYPE_INTER_I){
2207                     s->mv_dir = MV_DIR_FORWARD;
2208                     s->mv_type = MV_TYPE_FIELD;
2209                     s->mb_intra= 0;
2210                     for(i=0; i<2; i++){
2211                         j= s->field_select[0][i] = s->p_field_select_table[i][xy];
2212                         s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
2213                         s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
2214                     }
2215                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER_I, pb, pb2, tex_pb,
2216                                  &dmin, &next_block, 0, 0);
2217                 }
2218                 if(mb_type&CANDIDATE_MB_TYPE_SKIPPED){
2219                     s->mv_dir = MV_DIR_FORWARD;
2220                     s->mv_type = MV_TYPE_16X16;
2221                     s->mb_intra= 0;
2222                     s->mv[0][0][0] = 0;
2223                     s->mv[0][0][1] = 0;
2224                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_SKIPPED, pb, pb2, tex_pb,
2225                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
2226                 }
2227                 if(mb_type&CANDIDATE_MB_TYPE_INTER4V){
2228                     s->mv_dir = MV_DIR_FORWARD;
2229                     s->mv_type = MV_TYPE_8X8;
2230                     s->mb_intra= 0;
2231                     for(i=0; i<4; i++){
2232                         s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
2233                         s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
2234                     }
2235                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER4V, pb, pb2, tex_pb,
2236                                  &dmin, &next_block, 0, 0);
2237                 }
2238                 if(mb_type&CANDIDATE_MB_TYPE_FORWARD){
2239                     s->mv_dir = MV_DIR_FORWARD;
2240                     s->mv_type = MV_TYPE_16X16;
2241                     s->mb_intra= 0;
2242                     s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
2243                     s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
2244                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD, pb, pb2, tex_pb,
2245                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
2246                 }
2247                 if(mb_type&CANDIDATE_MB_TYPE_BACKWARD){
2248                     s->mv_dir = MV_DIR_BACKWARD;
2249                     s->mv_type = MV_TYPE_16X16;
2250                     s->mb_intra= 0;
2251                     s->mv[1][0][0] = s->b_back_mv_table[xy][0];
2252                     s->mv[1][0][1] = s->b_back_mv_table[xy][1];
2253                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD, pb, pb2, tex_pb,
2254                                  &dmin, &next_block, s->mv[1][0][0], s->mv[1][0][1]);
2255                 }
2256                 if(mb_type&CANDIDATE_MB_TYPE_BIDIR){
2257                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2258                     s->mv_type = MV_TYPE_16X16;
2259                     s->mb_intra= 0;
2260                     s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
2261                     s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
2262                     s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
2263                     s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
2264                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR, pb, pb2, tex_pb,
2265                                  &dmin, &next_block, 0, 0);
2266                 }
2267                 if(mb_type&CANDIDATE_MB_TYPE_FORWARD_I){
2268                     s->mv_dir = MV_DIR_FORWARD;
2269                     s->mv_type = MV_TYPE_FIELD;
2270                     s->mb_intra= 0;
2271                     for(i=0; i<2; i++){
2272                         j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
2273                         s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
2274                         s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
2275                     }
2276                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD_I, pb, pb2, tex_pb,
2277                                  &dmin, &next_block, 0, 0);
2278                 }
2279                 if(mb_type&CANDIDATE_MB_TYPE_BACKWARD_I){
2280                     s->mv_dir = MV_DIR_BACKWARD;
2281                     s->mv_type = MV_TYPE_FIELD;
2282                     s->mb_intra= 0;
2283                     for(i=0; i<2; i++){
2284                         j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
2285                         s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
2286                         s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
2287                     }
2288                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD_I, pb, pb2, tex_pb,
2289                                  &dmin, &next_block, 0, 0);
2290                 }
2291                 if(mb_type&CANDIDATE_MB_TYPE_BIDIR_I){
2292                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2293                     s->mv_type = MV_TYPE_FIELD;
2294                     s->mb_intra= 0;
2295                     for(dir=0; dir<2; dir++){
2296                         for(i=0; i<2; i++){
2297                             j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
2298                             s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
2299                             s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
2300                         }
2301                     }
2302                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR_I, pb, pb2, tex_pb,
2303                                  &dmin, &next_block, 0, 0);
2304                 }
2305                 if(mb_type&CANDIDATE_MB_TYPE_INTRA){
2306                     s->mv_dir = 0;
2307                     s->mv_type = MV_TYPE_16X16;
2308                     s->mb_intra= 1;
2309                     s->mv[0][0][0] = 0;
2310                     s->mv[0][0][1] = 0;
2311                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTRA, pb, pb2, tex_pb,
2312                                  &dmin, &next_block, 0, 0);
2313                     if(s->h263_pred || s->h263_aic){
2314                         if(best_s.mb_intra)
2315                             s->mbintra_table[mb_x + mb_y*s->mb_stride]=1;
2316                         else
2317                             ff_clean_intra_table_entries(s); //old mode?
2318                     }
2319                 }
2320
2321                 if((s->flags & CODEC_FLAG_QP_RD) && dmin < INT_MAX){
2322                     if(best_s.mv_type==MV_TYPE_16X16){ //FIXME move 4mv after QPRD
2323                         const int last_qp= backup_s.qscale;
2324                         int qpi, qp, dc[6];
2325                         DCTELEM ac[6][16];
2326                         const int mvdir= (best_s.mv_dir&MV_DIR_BACKWARD) ? 1 : 0;
2327                         static const int dquant_tab[4]={-1,1,-2,2};
2328
2329                         assert(backup_s.dquant == 0);
2330
2331                         //FIXME intra
2332                         s->mv_dir= best_s.mv_dir;
2333                         s->mv_type = MV_TYPE_16X16;
2334                         s->mb_intra= best_s.mb_intra;
2335                         s->mv[0][0][0] = best_s.mv[0][0][0];
2336                         s->mv[0][0][1] = best_s.mv[0][0][1];
2337                         s->mv[1][0][0] = best_s.mv[1][0][0];
2338                         s->mv[1][0][1] = best_s.mv[1][0][1];
2339
2340                         qpi = s->pict_type == B_TYPE ? 2 : 0;
2341                         for(; qpi<4; qpi++){
2342                             int dquant= dquant_tab[qpi];
2343                             qp= last_qp + dquant;
2344                             if(qp < s->avctx->qmin || qp > s->avctx->qmax)
2345                                 continue;
2346                             backup_s.dquant= dquant;
2347                             if(s->mb_intra && s->dc_val[0]){
2348                                 for(i=0; i<6; i++){
2349                                     dc[i]= s->dc_val[0][ s->block_index[i] ];
2350                                     memcpy(ac[i], s->ac_val[0][s->block_index[i]], sizeof(DCTELEM)*16);
2351                                 }
2352                             }
2353
2354                             encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
2355                                          &dmin, &next_block, s->mv[mvdir][0][0], s->mv[mvdir][0][1]);
2356                             if(best_s.qscale != qp){
2357                                 if(s->mb_intra && s->dc_val[0]){
2358                                     for(i=0; i<6; i++){
2359                                         s->dc_val[0][ s->block_index[i] ]= dc[i];
2360                                         memcpy(s->ac_val[0][s->block_index[i]], ac[i], sizeof(DCTELEM)*16);
2361                                     }
2362                                 }
2363                             }
2364                         }
2365                     }
2366                 }
2367                 if(mb_type&CANDIDATE_MB_TYPE_DIRECT){
2368                     int mx= s->b_direct_mv_table[xy][0];
2369                     int my= s->b_direct_mv_table[xy][1];
2370
2371                     backup_s.dquant = 0;
2372                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
2373                     s->mb_intra= 0;
2374                     ff_mpeg4_set_direct_mv(s, mx, my);
2375                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
2376                                  &dmin, &next_block, mx, my);
2377                 }
2378                 if(mb_type&CANDIDATE_MB_TYPE_DIRECT0){
2379                     backup_s.dquant = 0;
2380                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
2381                     s->mb_intra= 0;
2382                     ff_mpeg4_set_direct_mv(s, 0, 0);
2383                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
2384                                  &dmin, &next_block, 0, 0);
2385                 }
2386                 if(!best_s.mb_intra && s->flags2&CODEC_FLAG2_SKIP_RD){
2387                     int coded=0;
2388                     for(i=0; i<6; i++)
2389                         coded |= s->block_last_index[i];
2390                     if(coded){
2391                         int mx,my;
2392                         memcpy(s->mv, best_s.mv, sizeof(s->mv));
2393                         if(best_s.mv_dir & MV_DIRECT){
2394                             mx=my=0; //FIXME find the one we actually used
2395                             ff_mpeg4_set_direct_mv(s, mx, my);
2396                         }else if(best_s.mv_dir&MV_DIR_BACKWARD){
2397                             mx= s->mv[1][0][0];
2398                             my= s->mv[1][0][1];
2399                         }else{
2400                             mx= s->mv[0][0][0];
2401                             my= s->mv[0][0][1];
2402                         }
2403
2404                         s->mv_dir= best_s.mv_dir;
2405                         s->mv_type = best_s.mv_type;
2406                         s->mb_intra= 0;
2407 /*                        s->mv[0][0][0] = best_s.mv[0][0][0];
2408                         s->mv[0][0][1] = best_s.mv[0][0][1];
2409                         s->mv[1][0][0] = best_s.mv[1][0][0];
2410                         s->mv[1][0][1] = best_s.mv[1][0][1];*/
2411                         backup_s.dquant= 0;
2412                         s->skipdct=1;
2413                         encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
2414                                         &dmin, &next_block, mx, my);
2415                         s->skipdct=0;
2416                     }
2417                 }
2418
2419                 s->current_picture.qscale_table[xy]= best_s.qscale;
2420
2421                 copy_context_after_encode(s, &best_s, -1);
2422
2423                 pb_bits_count= put_bits_count(&s->pb);
2424                 flush_put_bits(&s->pb);
2425                 ff_copy_bits(&backup_s.pb, bit_buf[next_block^1], pb_bits_count);
2426                 s->pb= backup_s.pb;
2427
2428                 if(s->data_partitioning){
2429                     pb2_bits_count= put_bits_count(&s->pb2);
2430                     flush_put_bits(&s->pb2);
2431                     ff_copy_bits(&backup_s.pb2, bit_buf2[next_block^1], pb2_bits_count);
2432                     s->pb2= backup_s.pb2;
2433
2434                     tex_pb_bits_count= put_bits_count(&s->tex_pb);
2435                     flush_put_bits(&s->tex_pb);
2436                     ff_copy_bits(&backup_s.tex_pb, bit_buf_tex[next_block^1], tex_pb_bits_count);
2437                     s->tex_pb= backup_s.tex_pb;
2438                 }
2439                 s->last_bits= put_bits_count(&s->pb);
2440
2441                 if (s->out_format == FMT_H263 && s->pict_type!=B_TYPE)
2442                     ff_h263_update_motion_val(s);
2443
2444                 if(next_block==0){ //FIXME 16 vs linesize16
2445                     s->dsp.put_pixels_tab[0][0](s->dest[0], s->rd_scratchpad                     , s->linesize  ,16);
2446                     s->dsp.put_pixels_tab[1][0](s->dest[1], s->rd_scratchpad + 16*s->linesize    , s->uvlinesize, 8);
2447                     s->dsp.put_pixels_tab[1][0](s->dest[2], s->rd_scratchpad + 16*s->linesize + 8, s->uvlinesize, 8);
2448                 }
2449
2450                 if(s->avctx->mb_decision == FF_MB_DECISION_BITS)
2451                     MPV_decode_mb(s, s->block);
2452             } else {
2453                 int motion_x = 0, motion_y = 0;
2454                 s->mv_type=MV_TYPE_16X16;
2455                 // only one MB-Type possible
2456
2457                 switch(mb_type){
2458                 case CANDIDATE_MB_TYPE_INTRA:
2459                     s->mv_dir = 0;
2460                     s->mb_intra= 1;
2461                     motion_x= s->mv[0][0][0] = 0;
2462                     motion_y= s->mv[0][0][1] = 0;
2463                     break;
2464                 case CANDIDATE_MB_TYPE_INTER:
2465                     s->mv_dir = MV_DIR_FORWARD;
2466                     s->mb_intra= 0;
2467                     motion_x= s->mv[0][0][0] = s->p_mv_table[xy][0];
2468                     motion_y= s->mv[0][0][1] = s->p_mv_table[xy][1];
2469                     break;
2470                 case CANDIDATE_MB_TYPE_INTER_I:
2471                     s->mv_dir = MV_DIR_FORWARD;
2472                     s->mv_type = MV_TYPE_FIELD;
2473                     s->mb_intra= 0;
2474                     for(i=0; i<2; i++){
2475                         j= s->field_select[0][i] = s->p_field_select_table[i][xy];
2476                         s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
2477                         s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
2478                     }
2479                     break;
2480                 case CANDIDATE_MB_TYPE_INTER4V:
2481                     s->mv_dir = MV_DIR_FORWARD;
2482                     s->mv_type = MV_TYPE_8X8;
2483                     s->mb_intra= 0;
2484                     for(i=0; i<4; i++){
2485                         s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
2486                         s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
2487                     }
2488                     break;
2489                 case CANDIDATE_MB_TYPE_DIRECT:
2490                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
2491                     s->mb_intra= 0;
2492                     motion_x=s->b_direct_mv_table[xy][0];
2493                     motion_y=s->b_direct_mv_table[xy][1];
2494                     ff_mpeg4_set_direct_mv(s, motion_x, motion_y);
2495                     break;
2496                 case CANDIDATE_MB_TYPE_DIRECT0:
2497                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
2498                     s->mb_intra= 0;
2499                     ff_mpeg4_set_direct_mv(s, 0, 0);
2500                     break;
2501                 case CANDIDATE_MB_TYPE_BIDIR:
2502                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2503                     s->mb_intra= 0;
2504                     s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
2505                     s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
2506                     s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
2507                     s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
2508                     break;
2509                 case CANDIDATE_MB_TYPE_BACKWARD:
2510                     s->mv_dir = MV_DIR_BACKWARD;
2511                     s->mb_intra= 0;
2512                     motion_x= s->mv[1][0][0] = s->b_back_mv_table[xy][0];
2513                     motion_y= s->mv[1][0][1] = s->b_back_mv_table[xy][1];
2514                     break;
2515                 case CANDIDATE_MB_TYPE_FORWARD:
2516                     s->mv_dir = MV_DIR_FORWARD;
2517                     s->mb_intra= 0;
2518                     motion_x= s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
2519                     motion_y= s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
2520 //                    printf(" %d %d ", motion_x, motion_y);
2521                     break;
2522                 case CANDIDATE_MB_TYPE_FORWARD_I:
2523                     s->mv_dir = MV_DIR_FORWARD;
2524                     s->mv_type = MV_TYPE_FIELD;
2525                     s->mb_intra= 0;
2526                     for(i=0; i<2; i++){
2527                         j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
2528                         s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
2529                         s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
2530                     }
2531                     break;
2532                 case CANDIDATE_MB_TYPE_BACKWARD_I:
2533                     s->mv_dir = MV_DIR_BACKWARD;
2534                     s->mv_type = MV_TYPE_FIELD;
2535                     s->mb_intra= 0;
2536                     for(i=0; i<2; i++){
2537                         j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
2538                         s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
2539                         s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
2540                     }
2541                     break;
2542                 case CANDIDATE_MB_TYPE_BIDIR_I:
2543                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2544                     s->mv_type = MV_TYPE_FIELD;
2545                     s->mb_intra= 0;
2546                     for(dir=0; dir<2; dir++){
2547                         for(i=0; i<2; i++){
2548                             j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
2549                             s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
2550                             s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
2551                         }
2552                     }
2553                     break;
2554                 default:
2555                     av_log(s->avctx, AV_LOG_ERROR, "illegal MB type\n");
2556                 }
2557
2558                 encode_mb(s, motion_x, motion_y);
2559
2560                 // RAL: Update last macroblock type
2561                 s->last_mv_dir = s->mv_dir;
2562
2563                 if (s->out_format == FMT_H263 && s->pict_type!=B_TYPE)
2564                     ff_h263_update_motion_val(s);
2565
2566                 MPV_decode_mb(s, s->block);
2567             }
2568
2569             /* clean the MV table in IPS frames for direct mode in B frames */
2570             if(s->mb_intra /* && I,P,S_TYPE */){
2571                 s->p_mv_table[xy][0]=0;
2572                 s->p_mv_table[xy][1]=0;
2573             }
2574
2575             if(s->flags&CODEC_FLAG_PSNR){
2576                 int w= 16;
2577                 int h= 16;
2578
2579                 if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
2580                 if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
2581
2582                 s->current_picture.error[0] += sse(
2583                     s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16,
2584                     s->dest[0], w, h, s->linesize);
2585                 s->current_picture.error[1] += sse(
2586                     s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,
2587                     s->dest[1], w>>1, h>>1, s->uvlinesize);
2588                 s->current_picture.error[2] += sse(
2589                     s, s->new_picture    .data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,
2590                     s->dest[2], w>>1, h>>1, s->uvlinesize);
2591             }
2592             if(s->loop_filter){
2593                 if(s->out_format == FMT_H263)
2594                     ff_h263_loop_filter(s);
2595             }
2596 //printf("MB %d %d bits\n", s->mb_x+s->mb_y*s->mb_stride, put_bits_count(&s->pb));
2597         }
2598     }
2599
2600     //not beautiful here but we must write it before flushing so it has to be here
2601     if (ENABLE_MSMPEG4_ENCODER && s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type == I_TYPE)
2602         msmpeg4_encode_ext_header(s);
2603
2604     write_slice_end(s);
2605
2606     /* Send the last GOB if RTP */
2607     if (s->avctx->rtp_callback) {
2608         int number_mb = (mb_y - s->resync_mb_y)*s->mb_width - s->resync_mb_x;
2609         pdif = pbBufPtr(&s->pb) - s->ptr_lastgob;
2610         /* Call the RTP callback to send the last GOB */
2611         emms_c();
2612         s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, pdif, number_mb);
2613     }
2614
2615     return 0;
2616 }
2617
2618 #define MERGE(field) dst->field += src->field; src->field=0
2619 static void merge_context_after_me(MpegEncContext *dst, MpegEncContext *src){
2620     MERGE(me.scene_change_score);
2621     MERGE(me.mc_mb_var_sum_temp);
2622     MERGE(me.mb_var_sum_temp);
2623 }
2624
2625 static void merge_context_after_encode(MpegEncContext *dst, MpegEncContext *src){
2626     int i;
2627
2628     MERGE(dct_count[0]); //note, the other dct vars are not part of the context
2629     MERGE(dct_count[1]);
2630     MERGE(mv_bits);
2631     MERGE(i_tex_bits);
2632     MERGE(p_tex_bits);
2633     MERGE(i_count);
2634     MERGE(f_count);
2635     MERGE(b_count);
2636     MERGE(skip_count);
2637     MERGE(misc_bits);
2638     MERGE(error_count);
2639     MERGE(padding_bug_score);
2640     MERGE(current_picture.error[0]);
2641     MERGE(current_picture.error[1]);
2642     MERGE(current_picture.error[2]);
2643
2644     if(dst->avctx->noise_reduction){
2645         for(i=0; i<64; i++){
2646             MERGE(dct_error_sum[0][i]);
2647             MERGE(dct_error_sum[1][i]);
2648         }
2649     }
2650
2651     assert(put_bits_count(&src->pb) % 8 ==0);
2652     assert(put_bits_count(&dst->pb) % 8 ==0);
2653     ff_copy_bits(&dst->pb, src->pb.buf, put_bits_count(&src->pb));
2654     flush_put_bits(&dst->pb);
2655 }
2656
2657 static int estimate_qp(MpegEncContext *s, int dry_run){
2658     if (s->next_lambda){
2659         s->current_picture_ptr->quality=
2660         s->current_picture.quality = s->next_lambda;
2661         if(!dry_run) s->next_lambda= 0;
2662     } else if (!s->fixed_qscale) {
2663         s->current_picture_ptr->quality=
2664         s->current_picture.quality = ff_rate_estimate_qscale(s, dry_run);
2665         if (s->current_picture.quality < 0)
2666             return -1;
2667     }
2668
2669     if(s->adaptive_quant){
2670         switch(s->codec_id){
2671         case CODEC_ID_MPEG4:
2672             ff_clean_mpeg4_qscales(s);
2673             break;
2674         case CODEC_ID_H263:
2675         case CODEC_ID_H263P:
2676         case CODEC_ID_FLV1:
2677             ff_clean_h263_qscales(s);
2678             break;
2679         }
2680
2681         s->lambda= s->lambda_table[0];
2682         //FIXME broken
2683     }else
2684         s->lambda= s->current_picture.quality;
2685 //printf("%d %d\n", s->avctx->global_quality, s->current_picture.quality);
2686     update_qscale(s);
2687     return 0;
2688 }
2689
2690 static int encode_picture(MpegEncContext *s, int picture_number)
2691 {
2692     int i;
2693     int bits;
2694
2695     s->picture_number = picture_number;
2696
2697     /* Reset the average MB variance */
2698     s->me.mb_var_sum_temp    =
2699     s->me.mc_mb_var_sum_temp = 0;
2700
2701     /* we need to initialize some time vars before we can encode b-frames */
2702     // RAL: Condition added for MPEG1VIDEO
2703     if (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO || (s->h263_pred && !s->h263_msmpeg4))
2704         ff_set_mpeg4_time(s, s->picture_number);  //FIXME rename and use has_b_frames or similar
2705
2706     s->me.scene_change_score=0;
2707
2708 //    s->lambda= s->current_picture_ptr->quality; //FIXME qscale / ... stuff for ME ratedistoration
2709
2710     if(s->pict_type==I_TYPE){
2711         if(s->msmpeg4_version >= 3) s->no_rounding=1;
2712         else                        s->no_rounding=0;
2713     }else if(s->pict_type!=B_TYPE){
2714         if(s->flipflop_rounding || s->codec_id == CODEC_ID_H263P || s->codec_id == CODEC_ID_MPEG4)
2715             s->no_rounding ^= 1;
2716     }
2717
2718     if(s->flags & CODEC_FLAG_PASS2){
2719         if (estimate_qp(s,1) < 0)
2720             return -1;
2721         ff_get_2pass_fcode(s);
2722     }else if(!(s->flags & CODEC_FLAG_QSCALE)){
2723         if(s->pict_type==B_TYPE)
2724             s->lambda= s->last_lambda_for[s->pict_type];
2725         else
2726             s->lambda= s->last_lambda_for[s->last_non_b_pict_type];
2727         update_qscale(s);
2728     }
2729
2730     s->mb_intra=0; //for the rate distortion & bit compare functions
2731     for(i=1; i<s->avctx->thread_count; i++){
2732         ff_update_duplicate_context(s->thread_context[i], s);
2733     }
2734
2735     ff_init_me(s);
2736
2737     /* Estimate motion for every MB */
2738     if(s->pict_type != I_TYPE){
2739         s->lambda = (s->lambda * s->avctx->me_penalty_compensation + 128)>>8;
2740         s->lambda2= (s->lambda2* (int64_t)s->avctx->me_penalty_compensation + 128)>>8;
2741         if(s->pict_type != B_TYPE && s->avctx->me_threshold==0){
2742             if((s->avctx->pre_me && s->last_non_b_pict_type==I_TYPE) || s->avctx->pre_me==2){
2743                 s->avctx->execute(s->avctx, pre_estimate_motion_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
2744             }
2745         }
2746
2747         s->avctx->execute(s->avctx, estimate_motion_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
2748     }else /* if(s->pict_type == I_TYPE) */{
2749         /* I-Frame */
2750         for(i=0; i<s->mb_stride*s->mb_height; i++)
2751             s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
2752
2753         if(!s->fixed_qscale){
2754             /* finding spatial complexity for I-frame rate control */
2755             s->avctx->execute(s->avctx, mb_var_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
2756         }
2757     }
2758     for(i=1; i<s->avctx->thread_count; i++){
2759         merge_context_after_me(s, s->thread_context[i]);
2760     }
2761     s->current_picture.mc_mb_var_sum= s->current_picture_ptr->mc_mb_var_sum= s->me.mc_mb_var_sum_temp;
2762     s->current_picture.   mb_var_sum= s->current_picture_ptr->   mb_var_sum= s->me.   mb_var_sum_temp;
2763     emms_c();
2764
2765     if(s->me.scene_change_score > s->avctx->scenechange_threshold && s->pict_type == P_TYPE){
2766         s->pict_type= I_TYPE;
2767         for(i=0; i<s->mb_stride*s->mb_height; i++)
2768             s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
2769 //printf("Scene change detected, encoding as I Frame %d %d\n", s->current_picture.mb_var_sum, s->current_picture.mc_mb_var_sum);
2770     }
2771
2772     if(!s->umvplus){
2773         if(s->pict_type==P_TYPE || s->pict_type==S_TYPE) {
2774             s->f_code= ff_get_best_fcode(s, s->p_mv_table, CANDIDATE_MB_TYPE_INTER);
2775
2776             if(s->flags & CODEC_FLAG_INTERLACED_ME){
2777                 int a,b;
2778                 a= ff_get_best_fcode(s, s->p_field_mv_table[0][0], CANDIDATE_MB_TYPE_INTER_I); //FIXME field_select
2779                 b= ff_get_best_fcode(s, s->p_field_mv_table[1][1], CANDIDATE_MB_TYPE_INTER_I);
2780                 s->f_code= FFMAX(s->f_code, FFMAX(a,b));
2781             }
2782
2783             ff_fix_long_p_mvs(s);
2784             ff_fix_long_mvs(s, NULL, 0, s->p_mv_table, s->f_code, CANDIDATE_MB_TYPE_INTER, 0);
2785             if(s->flags & CODEC_FLAG_INTERLACED_ME){
2786                 int j;
2787                 for(i=0; i<2; i++){
2788                     for(j=0; j<2; j++)
2789                         ff_fix_long_mvs(s, s->p_field_select_table[i], j,
2790                                         s->p_field_mv_table[i][j], s->f_code, CANDIDATE_MB_TYPE_INTER_I, 0);
2791                 }
2792             }
2793         }
2794
2795         if(s->pict_type==B_TYPE){
2796             int a, b;
2797
2798             a = ff_get_best_fcode(s, s->b_forw_mv_table, CANDIDATE_MB_TYPE_FORWARD);
2799             b = ff_get_best_fcode(s, s->b_bidir_forw_mv_table, CANDIDATE_MB_TYPE_BIDIR);
2800             s->f_code = FFMAX(a, b);
2801
2802             a = ff_get_best_fcode(s, s->b_back_mv_table, CANDIDATE_MB_TYPE_BACKWARD);
2803             b = ff_get_best_fcode(s, s->b_bidir_back_mv_table, CANDIDATE_MB_TYPE_BIDIR);
2804             s->b_code = FFMAX(a, b);
2805
2806             ff_fix_long_mvs(s, NULL, 0, s->b_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_FORWARD, 1);
2807             ff_fix_long_mvs(s, NULL, 0, s->b_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BACKWARD, 1);
2808             ff_fix_long_mvs(s, NULL, 0, s->b_bidir_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_BIDIR, 1);
2809             ff_fix_long_mvs(s, NULL, 0, s->b_bidir_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BIDIR, 1);
2810             if(s->flags & CODEC_FLAG_INTERLACED_ME){
2811                 int dir, j;
2812                 for(dir=0; dir<2; dir++){
2813                     for(i=0; i<2; i++){
2814                         for(j=0; j<2; j++){
2815                             int type= dir ? (CANDIDATE_MB_TYPE_BACKWARD_I|CANDIDATE_MB_TYPE_BIDIR_I)
2816                                           : (CANDIDATE_MB_TYPE_FORWARD_I |CANDIDATE_MB_TYPE_BIDIR_I);
2817                             ff_fix_long_mvs(s, s->b_field_select_table[dir][i], j,
2818                                             s->b_field_mv_table[dir][i][j], dir ? s->b_code : s->f_code, type, 1);
2819                         }
2820                     }
2821                 }
2822             }
2823         }
2824     }
2825
2826     if (estimate_qp(s, 0) < 0)
2827         return -1;
2828
2829     if(s->qscale < 3 && s->max_qcoeff<=128 && s->pict_type==I_TYPE && !(s->flags & CODEC_FLAG_QSCALE))
2830         s->qscale= 3; //reduce clipping problems
2831
2832     if (s->out_format == FMT_MJPEG) {
2833         /* for mjpeg, we do include qscale in the matrix */
2834         s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0];
2835         for(i=1;i<64;i++){
2836             int j= s->dsp.idct_permutation[i];
2837
2838             s->intra_matrix[j] = av_clip_uint8((ff_mpeg1_default_intra_matrix[i] * s->qscale) >> 3);
2839         }
2840         convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
2841                        s->intra_matrix, s->intra_quant_bias, 8, 8, 1);
2842         s->qscale= 8;
2843     }
2844
2845     //FIXME var duplication
2846     s->current_picture_ptr->key_frame=
2847     s->current_picture.key_frame= s->pict_type == I_TYPE; //FIXME pic_ptr
2848     s->current_picture_ptr->pict_type=
2849     s->current_picture.pict_type= s->pict_type;
2850
2851     if(s->current_picture.key_frame)
2852         s->picture_in_gop_number=0;
2853
2854     s->last_bits= put_bits_count(&s->pb);
2855     switch(s->out_format) {
2856     case FMT_MJPEG:
2857         if (ENABLE_MJPEG_ENCODER)
2858             ff_mjpeg_encode_picture_header(s);
2859         break;
2860     case FMT_H261:
2861         if (ENABLE_H261_ENCODER)
2862             ff_h261_encode_picture_header(s, picture_number);
2863         break;
2864     case FMT_H263:
2865         if (ENABLE_WMV2_ENCODER && s->codec_id == CODEC_ID_WMV2)
2866             ff_wmv2_encode_picture_header(s, picture_number);
2867         else if (ENABLE_MSMPEG4_ENCODER && s->h263_msmpeg4)
2868             msmpeg4_encode_picture_header(s, picture_number);
2869         else if (s->h263_pred)
2870             mpeg4_encode_picture_header(s, picture_number);
2871         else if (ENABLE_RV10_ENCODER && s->codec_id == CODEC_ID_RV10)
2872             rv10_encode_picture_header(s, picture_number);
2873         else if (ENABLE_RV20_ENCODER && s->codec_id == CODEC_ID_RV20)
2874             rv20_encode_picture_header(s, picture_number);
2875         else if (s->codec_id == CODEC_ID_FLV1)
2876             ff_flv_encode_picture_header(s, picture_number);
2877         else
2878             h263_encode_picture_header(s, picture_number);
2879         break;
2880     case FMT_MPEG1:
2881         if (ENABLE_MPEG1VIDEO_ENCODER || ENABLE_MPEG2VIDEO_ENCODER)
2882             mpeg1_encode_picture_header(s, picture_number);
2883         break;
2884     case FMT_H264:
2885         break;
2886     default:
2887         assert(0);
2888     }
2889     bits= put_bits_count(&s->pb);
2890     s->header_bits= bits - s->last_bits;
2891
2892     for(i=1; i<s->avctx->thread_count; i++){
2893         update_duplicate_context_after_me(s->thread_context[i], s);
2894     }
2895     s->avctx->execute(s->avctx, encode_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
2896     for(i=1; i<s->avctx->thread_count; i++){
2897         merge_context_after_encode(s, s->thread_context[i]);
2898     }
2899     emms_c();
2900     return 0;
2901 }
2902
2903 void  denoise_dct_c(MpegEncContext *s, DCTELEM *block){
2904     const int intra= s->mb_intra;
2905     int i;
2906
2907     s->dct_count[intra]++;
2908
2909     for(i=0; i<64; i++){
2910         int level= block[i];
2911
2912         if(level){
2913             if(level>0){
2914                 s->dct_error_sum[intra][i] += level;
2915                 level -= s->dct_offset[intra][i];
2916                 if(level<0) level=0;
2917             }else{
2918                 s->dct_error_sum[intra][i] -= level;
2919                 level += s->dct_offset[intra][i];
2920                 if(level>0) level=0;
2921             }
2922             block[i]= level;
2923         }
2924     }
2925 }
2926
2927 int dct_quantize_trellis_c(MpegEncContext *s,
2928                         DCTELEM *block, int n,
2929                         int qscale, int *overflow){
2930     const int *qmat;
2931     const uint8_t *scantable= s->intra_scantable.scantable;
2932     const uint8_t *perm_scantable= s->intra_scantable.permutated;
2933     int max=0;
2934     unsigned int threshold1, threshold2;
2935     int bias=0;
2936     int run_tab[65];
2937     int level_tab[65];
2938     int score_tab[65];
2939     int survivor[65];
2940     int survivor_count;
2941     int last_run=0;
2942     int last_level=0;
2943     int last_score= 0;
2944     int last_i;
2945     int coeff[2][64];
2946     int coeff_count[64];
2947     int qmul, qadd, start_i, last_non_zero, i, dc;
2948     const int esc_length= s->ac_esc_length;
2949     uint8_t * length;
2950     uint8_t * last_length;
2951     const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
2952
2953     s->dsp.fdct (block);
2954
2955     if(s->dct_error_sum)
2956         s->denoise_dct(s, block);
2957     qmul= qscale*16;
2958     qadd= ((qscale-1)|1)*8;
2959
2960     if (s->mb_intra) {
2961         int q;
2962         if (!s->h263_aic) {
2963             if (n < 4)
2964                 q = s->y_dc_scale;
2965             else
2966                 q = s->c_dc_scale;
2967             q = q << 3;
2968         } else{
2969             /* For AIC we skip quant/dequant of INTRADC */
2970             q = 1 << 3;
2971             qadd=0;
2972         }
2973
2974         /* note: block[0] is assumed to be positive */
2975         block[0] = (block[0] + (q >> 1)) / q;
2976         start_i = 1;
2977         last_non_zero = 0;
2978         qmat = s->q_intra_matrix[qscale];
2979         if(s->mpeg_quant || s->out_format == FMT_MPEG1)
2980             bias= 1<<(QMAT_SHIFT-1);
2981         length     = s->intra_ac_vlc_length;
2982         last_length= s->intra_ac_vlc_last_length;
2983     } else {
2984         start_i = 0;
2985         last_non_zero = -1;
2986         qmat = s->q_inter_matrix[qscale];
2987         length     = s->inter_ac_vlc_length;
2988         last_length= s->inter_ac_vlc_last_length;
2989     }
2990     last_i= start_i;
2991
2992     threshold1= (1<<QMAT_SHIFT) - bias - 1;
2993     threshold2= (threshold1<<1);
2994
2995     for(i=63; i>=start_i; i--) {
2996         const int j = scantable[i];
2997         int level = block[j] * qmat[j];
2998
2999         if(((unsigned)(level+threshold1))>threshold2){
3000             last_non_zero = i;
3001             break;
3002         }
3003     }
3004
3005     for(i=start_i; i<=last_non_zero; i++) {
3006         const int j = scantable[i];
3007         int level = block[j] * qmat[j];
3008
3009 //        if(   bias+level >= (1<<(QMAT_SHIFT - 3))
3010 //           || bias-level >= (1<<(QMAT_SHIFT - 3))){
3011         if(((unsigned)(level+threshold1))>threshold2){
3012             if(level>0){
3013                 level= (bias + level)>>QMAT_SHIFT;
3014                 coeff[0][i]= level;
3015                 coeff[1][i]= level-1;
3016 //                coeff[2][k]= level-2;
3017             }else{
3018                 level= (bias - level)>>QMAT_SHIFT;
3019                 coeff[0][i]= -level;
3020                 coeff[1][i]= -level+1;
3021 //                coeff[2][k]= -level+2;
3022             }
3023             coeff_count[i]= FFMIN(level, 2);
3024             assert(coeff_count[i]);
3025             max |=level;
3026         }else{
3027             coeff[0][i]= (level>>31)|1;
3028             coeff_count[i]= 1;
3029         }
3030     }
3031
3032     *overflow= s->max_qcoeff < max; //overflow might have happened
3033
3034     if(last_non_zero < start_i){
3035         memset(block + start_i, 0, (64-start_i)*sizeof(DCTELEM));
3036         return last_non_zero;
3037     }
3038
3039     score_tab[start_i]= 0;
3040     survivor[0]= start_i;
3041     survivor_count= 1;
3042
3043     for(i=start_i; i<=last_non_zero; i++){
3044         int level_index, j;
3045         const int dct_coeff= FFABS(block[ scantable[i] ]);
3046         const int zero_distoration= dct_coeff*dct_coeff;
3047         int best_score=256*256*256*120;
3048         for(level_index=0; level_index < coeff_count[i]; level_index++){
3049             int distoration;
3050             int level= coeff[level_index][i];
3051             const int alevel= FFABS(level);
3052             int unquant_coeff;
3053
3054             assert(level);
3055
3056             if(s->out_format == FMT_H263){
3057                 unquant_coeff= alevel*qmul + qadd;
3058             }else{ //MPEG1
3059                 j= s->dsp.idct_permutation[ scantable[i] ]; //FIXME optimize
3060                 if(s->mb_intra){
3061                         unquant_coeff = (int)(  alevel  * qscale * s->intra_matrix[j]) >> 3;
3062                         unquant_coeff =   (unquant_coeff - 1) | 1;
3063                 }else{
3064                         unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[j])) >> 4;
3065                         unquant_coeff =   (unquant_coeff - 1) | 1;
3066                 }
3067                 unquant_coeff<<= 3;
3068             }
3069
3070             distoration= (unquant_coeff - dct_coeff) * (unquant_coeff - dct_coeff) - zero_distoration;
3071             level+=64;
3072             if((level&(~127)) == 0){
3073                 for(j=survivor_count-1; j>=0; j--){
3074                     int run= i - survivor[j];
3075                     int score= distoration + length[UNI_AC_ENC_INDEX(run, level)]*lambda;
3076                     score += score_tab[i-run];
3077
3078                     if(score < best_score){
3079                         best_score= score;
3080                         run_tab[i+1]= run;
3081                         level_tab[i+1]= level-64;
3082                     }
3083                 }
3084
3085                 if(s->out_format == FMT_H263){
3086                     for(j=survivor_count-1; j>=0; j--){
3087                         int run= i - survivor[j];
3088                         int score= distoration + last_length[UNI_AC_ENC_INDEX(run, level)]*lambda;
3089                         score += score_tab[i-run];
3090                         if(score < last_score){
3091                             last_score= score;
3092                             last_run= run;
3093                             last_level= level-64;
3094                             last_i= i+1;
3095                         }
3096                     }
3097                 }
3098             }else{
3099                 distoration += esc_length*lambda;
3100                 for(j=survivor_count-1; j>=0; j--){
3101                     int run= i - survivor[j];
3102                     int score= distoration + score_tab[i-run];
3103
3104                     if(score < best_score){
3105                         best_score= score;
3106                         run_tab[i+1]= run;
3107                         level_tab[i+1]= level-64;
3108                     }
3109                 }
3110
3111                 if(s->out_format == FMT_H263){
3112                   for(j=survivor_count-1; j>=0; j--){
3113                         int run= i - survivor[j];
3114                         int score= distoration + score_tab[i-run];
3115                         if(score < last_score){
3116                             last_score= score;
3117                             last_run= run;
3118                             last_level= level-64;
3119                             last_i= i+1;
3120                         }
3121                     }
3122                 }
3123             }
3124         }
3125
3126         score_tab[i+1]= best_score;
3127
3128         //Note: there is a vlc code in mpeg4 which is 1 bit shorter then another one with a shorter run and the same level
3129         if(last_non_zero <= 27){
3130             for(; survivor_count; survivor_count--){
3131                 if(score_tab[ survivor[survivor_count-1] ] <= best_score)
3132                     break;
3133             }
3134         }else{
3135             for(; survivor_count; survivor_count--){
3136                 if(score_tab[ survivor[survivor_count-1] ] <= best_score + lambda)
3137                     break;
3138             }
3139         }
3140
3141         survivor[ survivor_count++ ]= i+1;
3142     }
3143
3144     if(s->out_format != FMT_H263){
3145         last_score= 256*256*256*120;
3146         for(i= survivor[0]; i<=last_non_zero + 1; i++){
3147             int score= score_tab[i];
3148             if(i) score += lambda*2; //FIXME exacter?
3149
3150             if(score < last_score){
3151                 last_score= score;
3152                 last_i= i;
3153                 last_level= level_tab[i];
3154                 last_run= run_tab[i];
3155             }
3156         }
3157     }
3158
3159     s->coded_score[n] = last_score;
3160
3161     dc= FFABS(block[0]);
3162     last_non_zero= last_i - 1;
3163     memset(block + start_i, 0, (64-start_i)*sizeof(DCTELEM));
3164
3165     if(last_non_zero < start_i)
3166         return last_non_zero;
3167
3168     if(last_non_zero == 0 && start_i == 0){
3169         int best_level= 0;
3170         int best_score= dc * dc;
3171
3172         for(i=0; i<coeff_count[0]; i++){
3173             int level= coeff[i][0];
3174             int alevel= FFABS(level);
3175             int unquant_coeff, score, distortion;
3176
3177             if(s->out_format == FMT_H263){
3178                     unquant_coeff= (alevel*qmul + qadd)>>3;
3179             }else{ //MPEG1
3180                     unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[0])) >> 4;
3181                     unquant_coeff =   (unquant_coeff - 1) | 1;
3182             }
3183             unquant_coeff = (unquant_coeff + 4) >> 3;
3184             unquant_coeff<<= 3 + 3;
3185
3186             distortion= (unquant_coeff - dc) * (unquant_coeff - dc);
3187             level+=64;
3188             if((level&(~127)) == 0) score= distortion + last_length[UNI_AC_ENC_INDEX(0, level)]*lambda;
3189             else                    score= distortion + esc_length*lambda;
3190
3191             if(score < best_score){
3192                 best_score= score;
3193                 best_level= level - 64;
3194             }
3195         }
3196         block[0]= best_level;
3197         s->coded_score[n] = best_score - dc*dc;
3198         if(best_level == 0) return -1;
3199         else                return last_non_zero;
3200     }
3201
3202     i= last_i;
3203     assert(last_level);
3204
3205     block[ perm_scantable[last_non_zero] ]= last_level;
3206     i -= last_run + 1;
3207
3208     for(; i>start_i; i -= run_tab[i] + 1){
3209         block[ perm_scantable[i-1] ]= level_tab[i];
3210     }
3211
3212     return last_non_zero;
3213 }
3214
3215 //#define REFINE_STATS 1
3216 static int16_t basis[64][64];
3217
3218 static void build_basis(uint8_t *perm){
3219     int i, j, x, y;
3220     emms_c();
3221     for(i=0; i<8; i++){
3222         for(j=0; j<8; j++){
3223             for(y=0; y<8; y++){
3224                 for(x=0; x<8; x++){
3225                     double s= 0.25*(1<<BASIS_SHIFT);
3226                     int index= 8*i + j;
3227                     int perm_index= perm[index];
3228                     if(i==0) s*= sqrt(0.5);
3229                     if(j==0) s*= sqrt(0.5);
3230                     basis[perm_index][8*x + y]= lrintf(s * cos((M_PI/8.0)*i*(x+0.5)) * cos((M_PI/8.0)*j*(y+0.5)));
3231                 }
3232             }
3233         }
3234     }
3235 }
3236
3237 static int dct_quantize_refine(MpegEncContext *s, //FIXME breaks denoise?
3238                         DCTELEM *block, int16_t *weight, DCTELEM *orig,
3239                         int n, int qscale){
3240     int16_t rem[64];
3241     DECLARE_ALIGNED_16(DCTELEM, d1[64]);
3242     const int *qmat;
3243     const uint8_t *scantable= s->intra_scantable.scantable;
3244     const uint8_t *perm_scantable= s->intra_scantable.permutated;
3245 //    unsigned int threshold1, threshold2;
3246 //    int bias=0;
3247     int run_tab[65];
3248     int prev_run=0;
3249     int prev_level=0;
3250     int qmul, qadd, start_i, last_non_zero, i, dc;
3251     uint8_t * length;
3252     uint8_t * last_length;
3253     int lambda;
3254     int rle_index, run, q = 1, sum; //q is only used when s->mb_intra is true
3255 #ifdef REFINE_STATS
3256 static int count=0;
3257 static int after_last=0;
3258 static int to_zero=0;
3259 static int from_zero=0;
3260 static int raise=0;
3261 static int lower=0;
3262 static int messed_sign=0;
3263 #endif
3264
3265     if(basis[0][0] == 0)
3266         build_basis(s->dsp.idct_permutation);
3267
3268     qmul= qscale*2;
3269     qadd= (qscale-1)|1;
3270     if (s->mb_intra) {
3271         if (!s->h263_aic) {
3272             if (n < 4)
3273                 q = s->y_dc_scale;
3274             else
3275                 q = s->c_dc_scale;
3276         } else{
3277             /* For AIC we skip quant/dequant of INTRADC */
3278             q = 1;
3279             qadd=0;
3280         }
3281         q <<= RECON_SHIFT-3;
3282         /* note: block[0] is assumed to be positive */
3283         dc= block[0]*q;
3284 //        block[0] = (block[0] + (q >> 1)) / q;
3285         start_i = 1;
3286         qmat = s->q_intra_matrix[qscale];
3287 //        if(s->mpeg_quant || s->out_format == FMT_MPEG1)
3288 //            bias= 1<<(QMAT_SHIFT-1);
3289         length     = s->intra_ac_vlc_length;
3290         last_length= s->intra_ac_vlc_last_length;
3291     } else {
3292         dc= 0;
3293         start_i = 0;
3294         qmat = s->q_inter_matrix[qscale];
3295         length     = s->inter_ac_vlc_length;
3296         last_length= s->inter_ac_vlc_last_length;
3297     }
3298     last_non_zero = s->block_last_index[n];
3299
3300 #ifdef REFINE_STATS
3301 {START_TIMER
3302 #endif
3303     dc += (1<<(RECON_SHIFT-1));
3304     for(i=0; i<64; i++){
3305         rem[i]= dc - (orig[i]<<RECON_SHIFT); //FIXME  use orig dirrectly instead of copying to rem[]
3306     }
3307 #ifdef REFINE_STATS
3308 STOP_TIMER("memset rem[]")}
3309 #endif
3310     sum=0;
3311     for(i=0; i<64; i++){
3312         int one= 36;
3313         int qns=4;
3314         int w;
3315
3316         w= FFABS(weight[i]) + qns*one;
3317         w= 15 + (48*qns*one + w/2)/w; // 16 .. 63
3318
3319         weight[i] = w;
3320 //        w=weight[i] = (63*qns + (w/2)) / w;
3321
3322         assert(w>0);
3323         assert(w<(1<<6));
3324         sum += w*w;
3325     }
3326     lambda= sum*(uint64_t)s->lambda2 >> (FF_LAMBDA_SHIFT - 6 + 6 + 6 + 6);
3327 #ifdef REFINE_STATS
3328 {START_TIMER
3329 #endif
3330     run=0;
3331     rle_index=0;
3332     for(i=start_i; i<=last_non_zero; i++){
3333         int j= perm_scantable[i];
3334         const int level= block[j];
3335         int coeff;
3336
3337         if(level){
3338             if(level<0) coeff= qmul*level - qadd;
3339             else        coeff= qmul*level + qadd;
3340             run_tab[rle_index++]=run;
3341             run=0;
3342
3343             s->dsp.add_8x8basis(rem, basis[j], coeff);
3344         }else{
3345             run++;
3346         }
3347     }
3348 #ifdef REFINE_STATS
3349 if(last_non_zero>0){
3350 STOP_TIMER("init rem[]")
3351 }
3352 }
3353
3354 {START_TIMER
3355 #endif
3356     for(;;){
3357         int best_score=s->dsp.try_8x8basis(rem, weight, basis[0], 0);
3358         int best_coeff=0;
3359         int best_change=0;
3360         int run2, best_unquant_change=0, analyze_gradient;
3361 #ifdef REFINE_STATS
3362 {START_TIMER
3363 #endif
3364         analyze_gradient = last_non_zero > 2 || s->avctx->quantizer_noise_shaping >= 3;
3365
3366         if(analyze_gradient){
3367 #ifdef REFINE_STATS
3368 {START_TIMER
3369 #endif
3370             for(i=0; i<64; i++){
3371                 int w= weight[i];
3372
3373                 d1[i] = (rem[i]*w*w + (1<<(RECON_SHIFT+12-1)))>>(RECON_SHIFT+12);
3374             }
3375 #ifdef REFINE_STATS
3376 STOP_TIMER("rem*w*w")}
3377 {START_TIMER
3378 #endif
3379             s->dsp.fdct(d1);
3380 #ifdef REFINE_STATS
3381 STOP_TIMER("dct")}
3382 #endif
3383         }
3384
3385         if(start_i){
3386             const int level= block[0];
3387             int change, old_coeff;
3388
3389             assert(s->mb_intra);
3390
3391             old_coeff= q*level;
3392
3393             for(change=-1; change<=1; change+=2){
3394                 int new_level= level + change;
3395                 int score, new_coeff;
3396
3397                 new_coeff= q*new_level;
3398                 if(new_coeff >= 2048 || new_coeff < 0)
3399                     continue;
3400
3401                 score= s->dsp.try_8x8basis(rem, weight, basis[0], new_coeff - old_coeff);
3402                 if(score<best_score){
3403                     best_score= score;
3404                     best_coeff= 0;
3405                     best_change= change;
3406                     best_unquant_change= new_coeff - old_coeff;
3407                 }
3408             }
3409         }
3410
3411         run=0;
3412         rle_index=0;
3413         run2= run_tab[rle_index++];
3414         prev_level=0;
3415         prev_run=0;
3416
3417         for(i=start_i; i<64; i++){
3418             int j= perm_scantable[i];
3419             const int level= block[j];
3420             int change, old_coeff;
3421
3422             if(s->avctx->quantizer_noise_shaping < 3 && i > last_non_zero + 1)
3423                 break;
3424
3425             if(level){
3426                 if(level<0) old_coeff= qmul*level - qadd;
3427                 else        old_coeff= qmul*level + qadd;
3428                 run2= run_tab[rle_index++]; //FIXME ! maybe after last
3429             }else{
3430                 old_coeff=0;
3431                 run2--;
3432                 assert(run2>=0 || i >= last_non_zero );
3433             }
3434
3435             for(change=-1; change<=1; change+=2){
3436                 int new_level= level + change;
3437                 int score, new_coeff, unquant_change;
3438
3439                 score=0;
3440                 if(s->avctx->quantizer_noise_shaping < 2 && FFABS(new_level) > FFABS(level))
3441                    continue;
3442
3443                 if(new_level){
3444                     if(new_level<0) new_coeff= qmul*new_level - qadd;
3445                     else            new_coeff= qmul*new_level + qadd;
3446                     if(new_coeff >= 2048 || new_coeff <= -2048)
3447                         continue;
3448                     //FIXME check for overflow
3449
3450                     if(level){
3451                         if(level < 63 && level > -63){
3452                             if(i < last_non_zero)
3453                                 score +=   length[UNI_AC_ENC_INDEX(run, new_level+64)]
3454                                          - length[UNI_AC_ENC_INDEX(run, level+64)];
3455                             else
3456                                 score +=   last_length[UNI_AC_ENC_INDEX(run, new_level+64)]
3457                                          - last_length[UNI_AC_ENC_INDEX(run, level+64)];
3458                         }
3459                     }else{
3460                         assert(FFABS(new_level)==1);
3461
3462                         if(analyze_gradient){
3463                             int g= d1[ scantable[i] ];
3464                             if(g && (g^new_level) >= 0)
3465                                 continue;
3466                         }
3467
3468                         if(i < last_non_zero){
3469                             int next_i= i + run2 + 1;
3470                             int next_level= block[ perm_scantable[next_i] ] + 64;
3471
3472                             if(next_level&(~127))
3473                                 next_level= 0;
3474
3475                             if(next_i < last_non_zero)
3476                                 score +=   length[UNI_AC_ENC_INDEX(run, 65)]
3477                                          + length[UNI_AC_ENC_INDEX(run2, next_level)]
3478                                          - length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
3479                             else
3480                                 score +=  length[UNI_AC_ENC_INDEX(run, 65)]
3481                                         + last_length[UNI_AC_ENC_INDEX(run2, next_level)]
3482                                         - last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
3483                         }else{
3484                             score += last_length[UNI_AC_ENC_INDEX(run, 65)];
3485                             if(prev_level){
3486                                 score +=  length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
3487                                         - last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
3488                             }
3489                         }
3490                     }
3491                 }else{
3492                     new_coeff=0;
3493                     assert(FFABS(level)==1);
3494
3495                     if(i < last_non_zero){
3496                         int next_i= i + run2 + 1;
3497                         int next_level= block[ perm_scantable[next_i] ] + 64;
3498
3499                         if(next_level&(~127))
3500                             next_level= 0;
3501
3502                         if(next_i < last_non_zero)
3503                             score +=   length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
3504                                      - length[UNI_AC_ENC_INDEX(run2, next_level)]
3505                                      - length[UNI_AC_ENC_INDEX(run, 65)];
3506                         else
3507                             score +=   last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
3508                                      - last_length[UNI_AC_ENC_INDEX(run2, next_level)]
3509                                      - length[UNI_AC_ENC_INDEX(run, 65)];
3510                     }else{
3511                         score += -last_length[UNI_AC_ENC_INDEX(run, 65)];
3512                         if(prev_level){
3513                             score +=  last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
3514                                     - length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
3515                         }
3516                     }
3517                 }
3518
3519                 score *= lambda;
3520
3521                 unquant_change= new_coeff - old_coeff;
3522                 assert((score < 100*lambda && score > -100*lambda) || lambda==0);
3523
3524                 score+= s->dsp.try_8x8basis(rem, weight, basis[j], unquant_change);
3525                 if(score<best_score){
3526                     best_score= score;
3527                     best_coeff= i;
3528                     best_change= change;
3529                     best_unquant_change= unquant_change;
3530                 }
3531             }
3532             if(level){
3533                 prev_level= level + 64;
3534                 if(prev_level&(~127))
3535                     prev_level= 0;
3536                 prev_run= run;
3537                 run=0;
3538             }else{
3539                 run++;
3540             }
3541         }
3542 #ifdef REFINE_STATS
3543 STOP_TIMER("iterative step")}
3544 #endif
3545
3546         if(best_change){
3547             int j= perm_scantable[ best_coeff ];
3548
3549             block[j] += best_change;
3550
3551             if(best_coeff > last_non_zero){
3552                 last_non_zero= best_coeff;
3553                 assert(block[j]);
3554 #ifdef REFINE_STATS
3555 after_last++;
3556 #endif
3557             }else{
3558 #ifdef REFINE_STATS
3559 if(block[j]){
3560     if(block[j] - best_change){
3561         if(FFABS(block[j]) > FFABS(block[j] - best_change)){
3562             raise++;
3563         }else{
3564             lower++;
3565         }
3566     }else{
3567         from_zero++;
3568     }
3569 }else{
3570     to_zero++;
3571 }
3572 #endif
3573                 for(; last_non_zero>=start_i; last_non_zero--){
3574                     if(block[perm_scantable[last_non_zero]])
3575                         break;
3576                 }
3577             }
3578 #ifdef REFINE_STATS
3579 count++;
3580 if(256*256*256*64 % count == 0){
3581     printf("after_last:%d to_zero:%d from_zero:%d raise:%d lower:%d sign:%d xyp:%d/%d/%d\n", after_last, to_zero, from_zero, raise, lower, messed_sign, s->mb_x, s->mb_y, s->picture_number);
3582 }
3583 #endif
3584             run=0;
3585             rle_index=0;
3586             for(i=start_i; i<=last_non_zero; i++){
3587                 int j= perm_scantable[i];
3588                 const int level= block[j];
3589
3590                  if(level){
3591                      run_tab[rle_index++]=run;
3592                      run=0;
3593                  }else{
3594                      run++;
3595                  }
3596             }
3597
3598             s->dsp.add_8x8basis(rem, basis[j], best_unquant_change);
3599         }else{
3600             break;
3601         }
3602     }
3603 #ifdef REFINE_STATS
3604 if(last_non_zero>0){
3605 STOP_TIMER("iterative search")
3606 }
3607 }
3608 #endif
3609
3610     return last_non_zero;
3611 }
3612
3613 int dct_quantize_c(MpegEncContext *s,
3614                         DCTELEM *block, int n,
3615                         int qscale, int *overflow)
3616 {
3617     int i, j, level, last_non_zero, q, start_i;
3618     const int *qmat;
3619     const uint8_t *scantable= s->intra_scantable.scantable;
3620     int bias;
3621     int max=0;
3622     unsigned int threshold1, threshold2;
3623
3624     s->dsp.fdct (block);
3625
3626     if(s->dct_error_sum)
3627         s->denoise_dct(s, block);
3628
3629     if (s->mb_intra) {
3630         if (!s->h263_aic) {
3631             if (n < 4)
3632                 q = s->y_dc_scale;
3633             else
3634                 q = s->c_dc_scale;
3635             q = q << 3;
3636         } else
3637             /* For AIC we skip quant/dequant of INTRADC */
3638             q = 1 << 3;
3639
3640         /* note: block[0] is assumed to be positive */
3641         block[0] = (block[0] + (q >> 1)) / q;
3642         start_i = 1;
3643         last_non_zero = 0;
3644         qmat = s->q_intra_matrix[qscale];
3645         bias= s->intra_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
3646     } else {
3647         start_i = 0;
3648         last_non_zero = -1;
3649         qmat = s->q_inter_matrix[qscale];
3650         bias= s->inter_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
3651     }
3652     threshold1= (1<<QMAT_SHIFT) - bias - 1;
3653     threshold2= (threshold1<<1);
3654     for(i=63;i>=start_i;i--) {
3655         j = scantable[i];
3656         level = block[j] * qmat[j];
3657
3658         if(((unsigned)(level+threshold1))>threshold2){
3659             last_non_zero = i;
3660             break;
3661         }else{
3662             block[j]=0;
3663         }
3664     }
3665     for(i=start_i; i<=last_non_zero; i++) {
3666         j = scantable[i];
3667         level = block[j] * qmat[j];
3668
3669 //        if(   bias+level >= (1<<QMAT_SHIFT)
3670 //           || bias-level >= (1<<QMAT_SHIFT)){
3671         if(((unsigned)(level+threshold1))>threshold2){
3672             if(level>0){
3673                 level= (bias + level)>>QMAT_SHIFT;
3674                 block[j]= level;
3675             }else{
3676                 level= (bias - level)>>QMAT_SHIFT;
3677                 block[j]= -level;
3678             }
3679             max |=level;
3680         }else{
3681             block[j]=0;
3682         }
3683     }
3684     *overflow= s->max_qcoeff < max; //overflow might have happened
3685
3686     /* we need this permutation so that we correct the IDCT, we only permute the !=0 elements */
3687     if (s->dsp.idct_permutation_type != FF_NO_IDCT_PERM)
3688         ff_block_permute(block, s->dsp.idct_permutation, scantable, last_non_zero);
3689
3690     return last_non_zero;
3691 }
3692
3693 AVCodec h263_encoder = {
3694     "h263",
3695     CODEC_TYPE_VIDEO,
3696     CODEC_ID_H263,
3697     sizeof(MpegEncContext),
3698     MPV_encode_init,
3699     MPV_encode_picture,
3700     MPV_encode_end,
3701     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3702 };
3703
3704 AVCodec h263p_encoder = {
3705     "h263p",
3706     CODEC_TYPE_VIDEO,
3707     CODEC_ID_H263P,
3708     sizeof(MpegEncContext),
3709     MPV_encode_init,
3710     MPV_encode_picture,
3711     MPV_encode_end,
3712     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3713 };
3714
3715 AVCodec flv_encoder = {
3716     "flv",
3717     CODEC_TYPE_VIDEO,
3718     CODEC_ID_FLV1,
3719     sizeof(MpegEncContext),
3720     MPV_encode_init,
3721     MPV_encode_picture,
3722     MPV_encode_end,
3723     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3724 };
3725
3726 AVCodec rv10_encoder = {
3727     "rv10",
3728     CODEC_TYPE_VIDEO,
3729     CODEC_ID_RV10,
3730     sizeof(MpegEncContext),
3731     MPV_encode_init,
3732     MPV_encode_picture,
3733     MPV_encode_end,
3734     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3735 };
3736
3737 AVCodec rv20_encoder = {
3738     "rv20",
3739     CODEC_TYPE_VIDEO,
3740     CODEC_ID_RV20,
3741     sizeof(MpegEncContext),
3742     MPV_encode_init,
3743     MPV_encode_picture,
3744     MPV_encode_end,
3745     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3746 };
3747
3748 AVCodec mpeg4_encoder = {
3749     "mpeg4",
3750     CODEC_TYPE_VIDEO,
3751     CODEC_ID_MPEG4,
3752     sizeof(MpegEncContext),
3753     MPV_encode_init,
3754     MPV_encode_picture,
3755     MPV_encode_end,
3756     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3757     .capabilities= CODEC_CAP_DELAY,
3758 };
3759
3760 AVCodec msmpeg4v1_encoder = {
3761     "msmpeg4v1",
3762     CODEC_TYPE_VIDEO,
3763     CODEC_ID_MSMPEG4V1,
3764     sizeof(MpegEncContext),
3765     MPV_encode_init,
3766     MPV_encode_picture,
3767     MPV_encode_end,
3768     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3769 };
3770
3771 AVCodec msmpeg4v2_encoder = {
3772     "msmpeg4v2",
3773     CODEC_TYPE_VIDEO,
3774     CODEC_ID_MSMPEG4V2,
3775     sizeof(MpegEncContext),
3776     MPV_encode_init,
3777     MPV_encode_picture,
3778     MPV_encode_end,
3779     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3780 };
3781
3782 AVCodec msmpeg4v3_encoder = {
3783     "msmpeg4",
3784     CODEC_TYPE_VIDEO,
3785     CODEC_ID_MSMPEG4V3,
3786     sizeof(MpegEncContext),
3787     MPV_encode_init,
3788     MPV_encode_picture,
3789     MPV_encode_end,
3790     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3791 };
3792
3793 AVCodec wmv1_encoder = {
3794     "wmv1",
3795     CODEC_TYPE_VIDEO,
3796     CODEC_ID_WMV1,
3797     sizeof(MpegEncContext),
3798     MPV_encode_init,
3799     MPV_encode_picture,
3800     MPV_encode_end,
3801     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3802 };