tizen/distrib/ffmpeg/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  * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
   7  *
   8  * This file is part of FFmpeg.
   9  *
  10  * FFmpeg is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * FFmpeg is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with FFmpeg; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  23  */
  24
  25 /**
  26  * @file
  27  * The simplest mpeg encoder (well, it was the simplest!).
  28  */
  29
  30 #include "libavutil/intmath.h"
  31 #include "avcodec.h"
  32 #include "dsputil.h"
  33 #include "mpegvideo.h"
  34 #include "mpegvideo_common.h"
  35 #include "h263.h"
  36 #include "mjpegenc.h"
  37 #include "msmpeg4.h"
  38 #include "faandct.h"
  39 #include "aandcttab.h"
  40 #include "flv.h"
  41 #include "mpeg4video.h"
  42 #include "internal.h"
  43 #include <limits.h>
  44
  45 //#undef NDEBUG
  46 //#include <assert.h>
  47
  48 static int encode_picture(MpegEncContext *s, int picture_number);
  49 static int dct_quantize_refine(MpegEncContext *s, DCTELEM *block, int16_t *weight, DCTELEM *orig, int n, int qscale);
  50 static int sse_mb(MpegEncContext *s);
  51
  52 /* enable all paranoid tests for rounding, overflows, etc... */
  53 //#define PARANOID
  54
  55 //#define DEBUG
  56
  57 static uint8_t default_mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
  58 static uint8_t default_fcode_tab[MAX_MV*2+1];
  59
  60 void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
  61                            const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra)
  62 {
  63     int qscale;
  64     int shift=0;
  65
  66     for(qscale=qmin; qscale<=qmax; qscale++){
  67         int i;
  68         if (dsp->fdct == ff_jpeg_fdct_islow
  69 #ifdef FAAN_POSTSCALE
  70             || dsp->fdct == ff_faandct
  71 #endif
  72             ) {
  73             for(i=0;i<64;i++) {
  74                 const int j= dsp->idct_permutation[i];
  75                 /* 16 <= qscale * quant_matrix[i] <= 7905 */
  76                 /* 19952             <= ff_aanscales[i] * qscale * quant_matrix[i]               <= 249205026 */
  77                 /* (1 << 36) / 19952 >= (1 << 36) / (ff_aanscales[i] * qscale * quant_matrix[i]) >= (1 << 36) / 249205026 */
  78                 /* 3444240           >= (1 << 36) / (ff_aanscales[i] * qscale * quant_matrix[i]) >= 275 */
  79
  80                 qmat[qscale][i] = (int)((UINT64_C(1) << QMAT_SHIFT) /
  81                                 (qscale * quant_matrix[j]));
  82             }
  83         } else if (dsp->fdct == fdct_ifast
  84 #ifndef FAAN_POSTSCALE
  85                    || dsp->fdct == ff_faandct
  86 #endif
  87                    ) {
  88             for(i=0;i<64;i++) {
  89                 const int j= dsp->idct_permutation[i];
  90                 /* 16 <= qscale * quant_matrix[i] <= 7905 */
  91                 /* 19952             <= ff_aanscales[i] * qscale * quant_matrix[i]               <= 249205026 */
  92                 /* (1 << 36) / 19952 >= (1 << 36) / (ff_aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
  93                 /* 3444240           >= (1 << 36) / (ff_aanscales[i] * qscale * quant_matrix[i]) >= 275 */
  94
  95                 qmat[qscale][i] = (int)((UINT64_C(1) << (QMAT_SHIFT + 14)) /
  96                                 (ff_aanscales[i] * qscale * quant_matrix[j]));
  97             }
  98         } else {
  99             for(i=0;i<64;i++) {
 100                 const int j= dsp->idct_permutation[i];
 101                 /* We can safely suppose that 16 <= quant_matrix[i] <= 255
 102                    So 16           <= qscale * quant_matrix[i]             <= 7905
 103                    so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
 104                    so 32768        >= (1<<19) / (qscale * quant_matrix[i]) >= 67
 105                 */
 106                 qmat[qscale][i] = (int)((UINT64_C(1) << QMAT_SHIFT) / (qscale * quant_matrix[j]));
 107 //                qmat  [qscale][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
 108                 qmat16[qscale][0][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[j]);
 109
 110                 if(qmat16[qscale][0][i]==0 || qmat16[qscale][0][i]==128*256) qmat16[qscale][0][i]=128*256-1;
 111                 qmat16[qscale][1][i]= ROUNDED_DIV(bias<<(16-QUANT_BIAS_SHIFT), qmat16[qscale][0][i]);
 112             }
 113         }
 114
 115         for(i=intra; i<64; i++){
 116             int64_t max= 8191;
 117             if (dsp->fdct == fdct_ifast
 118 #ifndef FAAN_POSTSCALE
 119                    || dsp->fdct == ff_faandct
 120 #endif
 121                    ) {
 122                 max = (8191LL*ff_aanscales[i]) >> 14;
 123             }
 124             while(((max * qmat[qscale][i]) >> shift) > INT_MAX){
 125                 shift++;
 126             }
 127         }
 128     }
 129     if(shift){
 130         av_log(NULL, AV_LOG_INFO, "Warning, QMAT_SHIFT is larger than %d, overflows possible\n", QMAT_SHIFT - shift);
 131     }
 132 }
 133
 134 static inline void update_qscale(MpegEncContext *s){
 135     s->qscale= (s->lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
 136     s->qscale= av_clip(s->qscale, s->avctx->qmin, s->avctx->qmax);
 137
 138     s->lambda2= (s->lambda*s->lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
 139 }
 140
 141 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix){
 142     int i;
 143
 144     if(matrix){
 145         put_bits(pb, 1, 1);
 146         for(i=0;i<64;i++) {
 147             put_bits(pb, 8, matrix[ ff_zigzag_direct[i] ]);
 148         }
 149     }else
 150         put_bits(pb, 1, 0);
 151 }
 152
 153 /**
 154  * init s->current_picture.qscale_table from s->lambda_table
 155  */
 156 void ff_init_qscale_tab(MpegEncContext *s){
 157     int8_t * const qscale_table= s->current_picture.qscale_table;
 158     int i;
 159
 160     for(i=0; i<s->mb_num; i++){
 161         unsigned int lam= s->lambda_table[ s->mb_index2xy[i] ];
 162         int qp= (lam*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
 163         qscale_table[ s->mb_index2xy[i] ]= av_clip(qp, s->avctx->qmin, s->avctx->qmax);
 164     }
 165 }
 166
 167 static void copy_picture_attributes(MpegEncContext *s, AVFrame *dst, AVFrame *src){
 168     int i;
 169
 170     dst->pict_type              = src->pict_type;
 171     dst->quality                = src->quality;
 172     dst->coded_picture_number   = src->coded_picture_number;
 173     dst->display_picture_number = src->display_picture_number;
 174 //    dst->reference              = src->reference;
 175     dst->pts                    = src->pts;
 176     dst->interlaced_frame       = src->interlaced_frame;
 177     dst->top_field_first        = src->top_field_first;
 178
 179     if(s->avctx->me_threshold){
 180         if(!src->motion_val[0])
 181             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.motion_val not set!\n");
 182         if(!src->mb_type)
 183             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.mb_type not set!\n");
 184         if(!src->ref_index[0])
 185             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.ref_index not set!\n");
 186         if(src->motion_subsample_log2 != dst->motion_subsample_log2)
 187             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.motion_subsample_log2 doesn't match! (%d!=%d)\n",
 188             src->motion_subsample_log2, dst->motion_subsample_log2);
 189
 190         memcpy(dst->mb_type, src->mb_type, s->mb_stride * s->mb_height * sizeof(dst->mb_type[0]));
 191
 192         for(i=0; i<2; i++){
 193             int stride= ((16*s->mb_width )>>src->motion_subsample_log2) + 1;
 194             int height= ((16*s->mb_height)>>src->motion_subsample_log2);
 195
 196             if(src->motion_val[i] && src->motion_val[i] != dst->motion_val[i]){
 197                 memcpy(dst->motion_val[i], src->motion_val[i], 2*stride*height*sizeof(int16_t));
 198             }
 199             if(src->ref_index[i] && src->ref_index[i] != dst->ref_index[i]){
 200                 memcpy(dst->ref_index[i], src->ref_index[i], s->mb_stride*4*s->mb_height*sizeof(int8_t));
 201             }
 202         }
 203     }
 204 }
 205
 206 static void update_duplicate_context_after_me(MpegEncContext *dst, MpegEncContext *src){
 207 #define COPY(a) dst->a= src->a
 208     COPY(pict_type);
 209     COPY(current_picture);
 210     COPY(f_code);
 211     COPY(b_code);
 212     COPY(qscale);
 213     COPY(lambda);
 214     COPY(lambda2);
 215     COPY(picture_in_gop_number);
 216     COPY(gop_picture_number);
 217     COPY(frame_pred_frame_dct); //FIXME don't set in encode_header
 218     COPY(progressive_frame); //FIXME don't set in encode_header
 219     COPY(partitioned_frame); //FIXME don't set in encode_header
 220 #undef COPY
 221 }
 222
 223 /**
 224  * sets the given MpegEncContext to defaults for encoding.
 225  * the changed fields will not depend upon the prior state of the MpegEncContext.
 226  */
 227 static void MPV_encode_defaults(MpegEncContext *s){
 228     int i;
 229     MPV_common_defaults(s);
 230
 231     for(i=-16; i<16; i++){
 232         default_fcode_tab[i + MAX_MV]= 1;
 233     }
 234     s->me.mv_penalty= default_mv_penalty;
 235     s->fcode_tab= default_fcode_tab;
 236 }
 237
 238 /* init video encoder */
 239 av_cold int MPV_encode_init(AVCodecContext *avctx)
 240 {
 241     MpegEncContext *s = avctx->priv_data;
 242     int i;
 243     int chroma_h_shift, chroma_v_shift;
 244
 245     MPV_encode_defaults(s);
 246
 247     switch (avctx->codec_id) {
 248     case CODEC_ID_MPEG2VIDEO:
 249         if(avctx->pix_fmt != PIX_FMT_YUV420P && avctx->pix_fmt != PIX_FMT_YUV422P){
 250             av_log(avctx, AV_LOG_ERROR, "only YUV420 and YUV422 are supported\n");
 251             return -1;
 252         }
 253         break;
 254     case CODEC_ID_LJPEG:
 255     case CODEC_ID_MJPEG:
 256         if(avctx->pix_fmt != PIX_FMT_YUVJ420P && avctx->pix_fmt != PIX_FMT_YUVJ422P && avctx->pix_fmt != PIX_FMT_RGB32 &&
 257            ((avctx->pix_fmt != PIX_FMT_YUV420P && avctx->pix_fmt != PIX_FMT_YUV422P) || avctx->strict_std_compliance>FF_COMPLIANCE_INOFFICIAL)){
 258             av_log(avctx, AV_LOG_ERROR, "colorspace not supported in jpeg\n");
 259             return -1;
 260         }
 261         break;
 262     default:
 263         if(avctx->pix_fmt != PIX_FMT_YUV420P){
 264             av_log(avctx, AV_LOG_ERROR, "only YUV420 is supported\n");
 265             return -1;
 266         }
 267     }
 268
 269     switch (avctx->pix_fmt) {
 270     case PIX_FMT_YUVJ422P:
 271     case PIX_FMT_YUV422P:
 272         s->chroma_format = CHROMA_422;
 273         break;
 274     case PIX_FMT_YUVJ420P:
 275     case PIX_FMT_YUV420P:
 276     default:
 277         s->chroma_format = CHROMA_420;
 278         break;
 279     }
 280
 281     s->bit_rate = avctx->bit_rate;
 282     s->width = avctx->width;
 283     s->height = avctx->height;
 284     if(avctx->gop_size > 600 && avctx->strict_std_compliance>FF_COMPLIANCE_EXPERIMENTAL){
 285         av_log(avctx, AV_LOG_ERROR, "Warning keyframe interval too large! reducing it ...\n");
 286         avctx->gop_size=600;
 287     }
 288     s->gop_size = avctx->gop_size;
 289     s->avctx = avctx;
 290     s->flags= avctx->flags;
 291     s->flags2= avctx->flags2;
 292     s->max_b_frames= avctx->max_b_frames;
 293     s->codec_id= avctx->codec->id;
 294     s->luma_elim_threshold  = avctx->luma_elim_threshold;
 295     s->chroma_elim_threshold= avctx->chroma_elim_threshold;
 296     s->strict_std_compliance= avctx->strict_std_compliance;
 297     s->data_partitioning= avctx->flags & CODEC_FLAG_PART;
 298     s->quarter_sample= (avctx->flags & CODEC_FLAG_QPEL)!=0;
 299     s->mpeg_quant= avctx->mpeg_quant;
 300     s->rtp_mode= !!avctx->rtp_payload_size;
 301     s->intra_dc_precision= avctx->intra_dc_precision;
 302     s->user_specified_pts = AV_NOPTS_VALUE;
 303
 304     if (s->gop_size <= 1) {
 305         s->intra_only = 1;
 306         s->gop_size = 12;
 307     } else {
 308         s->intra_only = 0;
 309     }
 310
 311     s->me_method = avctx->me_method;
 312
 313     /* Fixed QSCALE */
 314     s->fixed_qscale = !!(avctx->flags & CODEC_FLAG_QSCALE);
 315
 316     s->adaptive_quant= (   s->avctx->lumi_masking
 317                         || s->avctx->dark_masking
 318                         || s->avctx->temporal_cplx_masking
 319                         || s->avctx->spatial_cplx_masking
 320                         || s->avctx->p_masking
 321                         || s->avctx->border_masking
 322                         || (s->flags&CODEC_FLAG_QP_RD))
 323                        && !s->fixed_qscale;
 324
 325     s->obmc= !!(s->flags & CODEC_FLAG_OBMC);
 326     s->loop_filter= !!(s->flags & CODEC_FLAG_LOOP_FILTER);
 327     s->alternate_scan= !!(s->flags & CODEC_FLAG_ALT_SCAN);
 328     s->intra_vlc_format= !!(s->flags2 & CODEC_FLAG2_INTRA_VLC);
 329     s->q_scale_type= !!(s->flags2 & CODEC_FLAG2_NON_LINEAR_QUANT);
 330
 331     if(avctx->rc_max_rate && !avctx->rc_buffer_size){
 332         av_log(avctx, AV_LOG_ERROR, "a vbv buffer size is needed, for encoding with a maximum bitrate\n");
 333         return -1;
 334     }
 335
 336     if(avctx->rc_min_rate && avctx->rc_max_rate != avctx->rc_min_rate){
 337         av_log(avctx, AV_LOG_INFO, "Warning min_rate > 0 but min_rate != max_rate isn't recommended!\n");
 338     }
 339
 340     if(avctx->rc_min_rate && avctx->rc_min_rate > avctx->bit_rate){
 341         av_log(avctx, AV_LOG_ERROR, "bitrate below min bitrate\n");
 342         return -1;
 343     }
 344
 345     if(avctx->rc_max_rate && avctx->rc_max_rate < avctx->bit_rate){
 346         av_log(avctx, AV_LOG_INFO, "bitrate above max bitrate\n");
 347         return -1;
 348     }
 349
 350     if(avctx->rc_max_rate && avctx->rc_max_rate == avctx->bit_rate && avctx->rc_max_rate != avctx->rc_min_rate){
 351         av_log(avctx, AV_LOG_INFO, "impossible bitrate constraints, this will fail\n");
 352     }
 353
 354     if(avctx->rc_buffer_size && avctx->bit_rate*av_q2d(avctx->time_base) > avctx->rc_buffer_size){
 355         av_log(avctx, AV_LOG_ERROR, "VBV buffer too small for bitrate\n");
 356         return -1;
 357     }
 358
 359     if(avctx->bit_rate*av_q2d(avctx->time_base) > avctx->bit_rate_tolerance){
 360         av_log(avctx, AV_LOG_ERROR, "bitrate tolerance too small for bitrate\n");
 361         return -1;
 362     }
 363
 364     if(   s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate
 365        && (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO)
 366        && 90000LL * (avctx->rc_buffer_size-1) > s->avctx->rc_max_rate*0xFFFFLL){
 367
 368         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");
 369     }
 370
 371     if((s->flags & CODEC_FLAG_4MV) && s->codec_id != CODEC_ID_MPEG4
 372        && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P && s->codec_id != CODEC_ID_FLV1){
 373         av_log(avctx, AV_LOG_ERROR, "4MV not supported by codec\n");
 374         return -1;
 375     }
 376
 377     if(s->obmc && s->avctx->mb_decision != FF_MB_DECISION_SIMPLE){
 378         av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with simple mb decision\n");
 379         return -1;
 380     }
 381
 382     if(s->obmc && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P){
 383         av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with H263(+)\n");
 384         return -1;
 385     }
 386
 387     if(s->quarter_sample && s->codec_id != CODEC_ID_MPEG4){
 388         av_log(avctx, AV_LOG_ERROR, "qpel not supported by codec\n");
 389         return -1;
 390     }
 391
 392     if(s->data_partitioning && s->codec_id != CODEC_ID_MPEG4){
 393         av_log(avctx, AV_LOG_ERROR, "data partitioning not supported by codec\n");
 394         return -1;
 395     }
 396
 397     if(s->max_b_frames && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO){
 398         av_log(avctx, AV_LOG_ERROR, "b frames not supported by codec\n");
 399         return -1;
 400     }
 401
 402     if ((s->codec_id == CODEC_ID_MPEG4 || s->codec_id == CODEC_ID_H263 ||
 403          s->codec_id == CODEC_ID_H263P) &&
 404         (avctx->sample_aspect_ratio.num > 255 || avctx->sample_aspect_ratio.den > 255)) {
 405         av_log(avctx, AV_LOG_ERROR, "Invalid pixel aspect ratio %i/%i, limit is 255/255\n",
 406                avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
 407         return -1;
 408     }
 409
 410     if((s->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME|CODEC_FLAG_ALT_SCAN))
 411        && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG2VIDEO){
 412         av_log(avctx, AV_LOG_ERROR, "interlacing not supported by codec\n");
 413         return -1;
 414     }
 415
 416     if(s->mpeg_quant && s->codec_id != CODEC_ID_MPEG4){ //FIXME mpeg2 uses that too
 417         av_log(avctx, AV_LOG_ERROR, "mpeg2 style quantization not supported by codec\n");
 418         return -1;
 419     }
 420
 421     if((s->flags & CODEC_FLAG_CBP_RD) && !avctx->trellis){
 422         av_log(avctx, AV_LOG_ERROR, "CBP RD needs trellis quant\n");
 423         return -1;
 424     }
 425
 426     if((s->flags & CODEC_FLAG_QP_RD) && s->avctx->mb_decision != FF_MB_DECISION_RD){
 427         av_log(avctx, AV_LOG_ERROR, "QP RD needs mbd=2\n");
 428         return -1;
 429     }
 430
 431     if(s->avctx->scenechange_threshold < 1000000000 && (s->flags & CODEC_FLAG_CLOSED_GOP)){
 432         av_log(avctx, AV_LOG_ERROR, "closed gop with scene change detection are not supported yet, set threshold to 1000000000\n");
 433         return -1;
 434     }
 435
 436     if((s->flags2 & CODEC_FLAG2_INTRA_VLC) && s->codec_id != CODEC_ID_MPEG2VIDEO){
 437         av_log(avctx, AV_LOG_ERROR, "intra vlc table not supported by codec\n");
 438         return -1;
 439     }
 440
 441     if(s->flags & CODEC_FLAG_LOW_DELAY){
 442         if (s->codec_id != CODEC_ID_MPEG2VIDEO){
 443             av_log(avctx, AV_LOG_ERROR, "low delay forcing is only available for mpeg2\n");
 444             return -1;
 445         }
 446         if (s->max_b_frames != 0){
 447             av_log(avctx, AV_LOG_ERROR, "b frames cannot be used with low delay\n");
 448             return -1;
 449         }
 450     }
 451
 452     if(s->q_scale_type == 1){
 453         if(s->codec_id != CODEC_ID_MPEG2VIDEO){
 454             av_log(avctx, AV_LOG_ERROR, "non linear quant is only available for mpeg2\n");
 455             return -1;
 456         }
 457         if(avctx->qmax > 12){
 458             av_log(avctx, AV_LOG_ERROR, "non linear quant only supports qmax <= 12 currently\n");
 459             return -1;
 460         }
 461     }
 462
 463     if(s->avctx->thread_count > 1 && s->codec_id != CODEC_ID_MPEG4
 464        && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO
 465        && (s->codec_id != CODEC_ID_H263P || !(s->flags & CODEC_FLAG_H263P_SLICE_STRUCT))){
 466         av_log(avctx, AV_LOG_ERROR, "multi threaded encoding not supported by codec\n");
 467         return -1;
 468     }
 469
 470     if(s->avctx->thread_count < 1){
 471         av_log(avctx, AV_LOG_ERROR, "automatic thread number detection not supported by codec, patch welcome\n");
 472         return -1;
 473     }
 474
 475     if(s->avctx->thread_count > 1)
 476         s->rtp_mode= 1;
 477
 478     if(!avctx->time_base.den || !avctx->time_base.num){
 479         av_log(avctx, AV_LOG_ERROR, "framerate not set\n");
 480         return -1;
 481     }
 482
 483     i= (INT_MAX/2+128)>>8;
 484     if(avctx->me_threshold >= i){
 485         av_log(avctx, AV_LOG_ERROR, "me_threshold too large, max is %d\n", i - 1);
 486         return -1;
 487     }
 488     if(avctx->mb_threshold >= i){
 489         av_log(avctx, AV_LOG_ERROR, "mb_threshold too large, max is %d\n", i - 1);
 490         return -1;
 491     }
 492
 493     if(avctx->b_frame_strategy && (avctx->flags&CODEC_FLAG_PASS2)){
 494         av_log(avctx, AV_LOG_INFO, "notice: b_frame_strategy only affects the first pass\n");
 495         avctx->b_frame_strategy = 0;
 496     }
 497
 498     i= av_gcd(avctx->time_base.den, avctx->time_base.num);
 499     if(i > 1){
 500         av_log(avctx, AV_LOG_INFO, "removing common factors from framerate\n");
 501         avctx->time_base.den /= i;
 502         avctx->time_base.num /= i;
 503 //        return -1;
 504     }
 505
 506     if(s->mpeg_quant || s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO || s->codec_id==CODEC_ID_MJPEG){
 507         s->intra_quant_bias= 3<<(QUANT_BIAS_SHIFT-3); //(a + x*3/8)/x
 508         s->inter_quant_bias= 0;
 509     }else{
 510         s->intra_quant_bias=0;
 511         s->inter_quant_bias=-(1<<(QUANT_BIAS_SHIFT-2)); //(a - x/4)/x
 512     }
 513
 514     if(avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)
 515         s->intra_quant_bias= avctx->intra_quant_bias;
 516     if(avctx->inter_quant_bias != FF_DEFAULT_QUANT_BIAS)
 517         s->inter_quant_bias= avctx->inter_quant_bias;
 518
 519     avcodec_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift, &chroma_v_shift);
 520
 521     if(avctx->codec_id == CODEC_ID_MPEG4 && s->avctx->time_base.den > (1<<16)-1){
 522         av_log(avctx, AV_LOG_ERROR, "timebase not supported by mpeg 4 standard\n");
 523         return -1;
 524     }
 525     s->time_increment_bits = av_log2(s->avctx->time_base.den - 1) + 1;
 526
 527     switch(avctx->codec->id) {
 528     case CODEC_ID_MPEG1VIDEO:
 529         s->out_format = FMT_MPEG1;
 530         s->low_delay= !!(s->flags & CODEC_FLAG_LOW_DELAY);
 531         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
 532         break;
 533     case CODEC_ID_MPEG2VIDEO:
 534         s->out_format = FMT_MPEG1;
 535         s->low_delay= !!(s->flags & CODEC_FLAG_LOW_DELAY);
 536         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
 537         s->rtp_mode= 1;
 538         break;
 539     case CODEC_ID_LJPEG:
 540     case CODEC_ID_MJPEG:
 541         s->out_format = FMT_MJPEG;
 542         s->intra_only = 1; /* force intra only for jpeg */
 543         if(avctx->codec->id == CODEC_ID_LJPEG && avctx->pix_fmt == PIX_FMT_BGRA){
 544             s->mjpeg_vsample[0] = s->mjpeg_hsample[0] =
 545             s->mjpeg_vsample[1] = s->mjpeg_hsample[1] =
 546             s->mjpeg_vsample[2] = s->mjpeg_hsample[2] = 1;
 547         }else{
 548             s->mjpeg_vsample[0] = 2;
 549             s->mjpeg_vsample[1] = 2>>chroma_v_shift;
 550             s->mjpeg_vsample[2] = 2>>chroma_v_shift;
 551             s->mjpeg_hsample[0] = 2;
 552             s->mjpeg_hsample[1] = 2>>chroma_h_shift;
 553             s->mjpeg_hsample[2] = 2>>chroma_h_shift;
 554         }
 555         if (!(CONFIG_MJPEG_ENCODER || CONFIG_LJPEG_ENCODER)
 556             || ff_mjpeg_encode_init(s) < 0)
 557             return -1;
 558         avctx->delay=0;
 559         s->low_delay=1;
 560         break;
 561     case CODEC_ID_H261:
 562         if (!CONFIG_H261_ENCODER)  return -1;
 563         if (ff_h261_get_picture_format(s->width, s->height) < 0) {
 564             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);
 565             return -1;
 566         }
 567         s->out_format = FMT_H261;
 568         avctx->delay=0;
 569         s->low_delay=1;
 570         break;
 571     case CODEC_ID_H263:
 572         if (!CONFIG_H263_ENCODER)  return -1;
 573         if (ff_match_2uint16(h263_format, FF_ARRAY_ELEMS(h263_format), s->width, s->height) == 7) {
 574             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);
 575             return -1;
 576         }
 577         s->out_format = FMT_H263;
 578         s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
 579         avctx->delay=0;
 580         s->low_delay=1;
 581         break;
 582     case CODEC_ID_H263P:
 583         s->out_format = FMT_H263;
 584         s->h263_plus = 1;
 585         /* Fx */
 586         s->umvplus = (avctx->flags & CODEC_FLAG_H263P_UMV) ? 1:0;
 587         s->h263_aic= (avctx->flags & CODEC_FLAG_AC_PRED) ? 1:0;
 588         s->modified_quant= s->h263_aic;
 589         s->alt_inter_vlc= (avctx->flags & CODEC_FLAG_H263P_AIV) ? 1:0;
 590         s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
 591         s->loop_filter= (avctx->flags & CODEC_FLAG_LOOP_FILTER) ? 1:0;
 592         s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
 593         s->h263_slice_structured= (s->flags & CODEC_FLAG_H263P_SLICE_STRUCT) ? 1:0;
 594
 595         /* /Fx */
 596         /* These are just to be sure */
 597         avctx->delay=0;
 598         s->low_delay=1;
 599         break;
 600     case CODEC_ID_FLV1:
 601         s->out_format = FMT_H263;
 602         s->h263_flv = 2; /* format = 1; 11-bit codes */
 603         s->unrestricted_mv = 1;
 604         s->rtp_mode=0; /* don't allow GOB */
 605         avctx->delay=0;
 606         s->low_delay=1;
 607         break;
 608     case CODEC_ID_RV10:
 609         s->out_format = FMT_H263;
 610         avctx->delay=0;
 611         s->low_delay=1;
 612         break;
 613     case CODEC_ID_RV20:
 614         s->out_format = FMT_H263;
 615         avctx->delay=0;
 616         s->low_delay=1;
 617         s->modified_quant=1;
 618         s->h263_aic=1;
 619         s->h263_plus=1;
 620         s->loop_filter=1;
 621         s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
 622         break;
 623     case CODEC_ID_MPEG4:
 624         s->out_format = FMT_H263;
 625         s->h263_pred = 1;
 626         s->unrestricted_mv = 1;
 627         s->low_delay= s->max_b_frames ? 0 : 1;
 628         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
 629         break;
 630     case CODEC_ID_MSMPEG4V1:
 631         s->out_format = FMT_H263;
 632         s->h263_msmpeg4 = 1;
 633         s->h263_pred = 1;
 634         s->unrestricted_mv = 1;
 635         s->msmpeg4_version= 1;
 636         avctx->delay=0;
 637         s->low_delay=1;
 638         break;
 639     case CODEC_ID_MSMPEG4V2:
 640         s->out_format = FMT_H263;
 641         s->h263_msmpeg4 = 1;
 642         s->h263_pred = 1;
 643         s->unrestricted_mv = 1;
 644         s->msmpeg4_version= 2;
 645         avctx->delay=0;
 646         s->low_delay=1;
 647         break;
 648     case CODEC_ID_MSMPEG4V3:
 649         s->out_format = FMT_H263;
 650         s->h263_msmpeg4 = 1;
 651         s->h263_pred = 1;
 652         s->unrestricted_mv = 1;
 653         s->msmpeg4_version= 3;
 654         s->flipflop_rounding=1;
 655         avctx->delay=0;
 656         s->low_delay=1;
 657         break;
 658     case CODEC_ID_WMV1:
 659         s->out_format = FMT_H263;
 660         s->h263_msmpeg4 = 1;
 661         s->h263_pred = 1;
 662         s->unrestricted_mv = 1;
 663         s->msmpeg4_version= 4;
 664         s->flipflop_rounding=1;
 665         avctx->delay=0;
 666         s->low_delay=1;
 667         break;
 668     case CODEC_ID_WMV2:
 669         s->out_format = FMT_H263;
 670         s->h263_msmpeg4 = 1;
 671         s->h263_pred = 1;
 672         s->unrestricted_mv = 1;
 673         s->msmpeg4_version= 5;
 674         s->flipflop_rounding=1;
 675         avctx->delay=0;
 676         s->low_delay=1;
 677         break;
 678     default:
 679         return -1;
 680     }
 681
 682     avctx->has_b_frames= !s->low_delay;
 683
 684     s->encoding = 1;
 685
 686     s->progressive_frame=
 687     s->progressive_sequence= !(avctx->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME|CODEC_FLAG_ALT_SCAN));
 688
 689     /* init */
 690     if (MPV_common_init(s) < 0)
 691         return -1;
 692
 693     if(!s->dct_quantize)
 694         s->dct_quantize = dct_quantize_c;
 695     if(!s->denoise_dct)
 696         s->denoise_dct = denoise_dct_c;
 697     s->fast_dct_quantize = s->dct_quantize;
 698     if(avctx->trellis)
 699         s->dct_quantize = dct_quantize_trellis_c;
 700
 701     if((CONFIG_H263P_ENCODER || CONFIG_RV20_ENCODER) && s->modified_quant)
 702         s->chroma_qscale_table= ff_h263_chroma_qscale_table;
 703
 704     s->quant_precision=5;
 705
 706     ff_set_cmp(&s->dsp, s->dsp.ildct_cmp, s->avctx->ildct_cmp);
 707     ff_set_cmp(&s->dsp, s->dsp.frame_skip_cmp, s->avctx->frame_skip_cmp);
 708
 709     if (CONFIG_H261_ENCODER && s->out_format == FMT_H261)
 710         ff_h261_encode_init(s);
 711     if (CONFIG_H263_ENCODER && s->out_format == FMT_H263)
 712         h263_encode_init(s);
 713     if (CONFIG_MSMPEG4_ENCODER && s->msmpeg4_version)
 714         ff_msmpeg4_encode_init(s);
 715     if ((CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
 716         && s->out_format == FMT_MPEG1)
 717         ff_mpeg1_encode_init(s);
 718
 719     /* init q matrix */
 720     for(i=0;i<64;i++) {
 721         int j= s->dsp.idct_permutation[i];
 722         if(CONFIG_MPEG4_ENCODER && s->codec_id==CODEC_ID_MPEG4 && s->mpeg_quant){
 723             s->intra_matrix[j] = ff_mpeg4_default_intra_matrix[i];
 724             s->inter_matrix[j] = ff_mpeg4_default_non_intra_matrix[i];
 725         }else if(s->out_format == FMT_H263 || s->out_format == FMT_H261){
 726             s->intra_matrix[j] =
 727             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
 728         }else
 729         { /* mpeg1/2 */
 730             s->intra_matrix[j] = ff_mpeg1_default_intra_matrix[i];
 731             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
 732         }
 733         if(s->avctx->intra_matrix)
 734             s->intra_matrix[j] = s->avctx->intra_matrix[i];
 735         if(s->avctx->inter_matrix)
 736             s->inter_matrix[j] = s->avctx->inter_matrix[i];
 737     }
 738
 739     /* precompute matrix */
 740     /* for mjpeg, we do include qscale in the matrix */
 741     if (s->out_format != FMT_MJPEG) {
 742         ff_convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
 743                        s->intra_matrix, s->intra_quant_bias, avctx->qmin, 31, 1);
 744         ff_convert_matrix(&s->dsp, s->q_inter_matrix, s->q_inter_matrix16,
 745                        s->inter_matrix, s->inter_quant_bias, avctx->qmin, 31, 0);
 746     }
 747
 748     if(ff_rate_control_init(s) < 0)
 749         return -1;
 750
 751     return 0;
 752 }
 753
 754 av_cold int MPV_encode_end(AVCodecContext *avctx)
 755 {
 756     MpegEncContext *s = avctx->priv_data;
 757
 758     ff_rate_control_uninit(s);
 759
 760     MPV_common_end(s);
 761     if ((CONFIG_MJPEG_ENCODER || CONFIG_LJPEG_ENCODER) && s->out_format == FMT_MJPEG)
 762         ff_mjpeg_encode_close(s);
 763
 764     av_freep(&avctx->extradata);
 765
 766     return 0;
 767 }
 768
 769 static int get_sae(uint8_t *src, int ref, int stride){
 770     int x,y;
 771     int acc=0;
 772
 773     for(y=0; y<16; y++){
 774         for(x=0; x<16; x++){
 775             acc+= FFABS(src[x+y*stride] - ref);
 776         }
 777     }
 778
 779     return acc;
 780 }
 781
 782 static int get_intra_count(MpegEncContext *s, uint8_t *src, uint8_t *ref, int stride){
 783     int x, y, w, h;
 784     int acc=0;
 785
 786     w= s->width &~15;
 787     h= s->height&~15;
 788
 789     for(y=0; y<h; y+=16){
 790         for(x=0; x<w; x+=16){
 791             int offset= x + y*stride;
 792             int sad = s->dsp.sad[0](NULL, src + offset, ref + offset, stride, 16);
 793             int mean= (s->dsp.pix_sum(src + offset, stride) + 128)>>8;
 794             int sae = get_sae(src + offset, mean, stride);
 795
 796             acc+= sae + 500 < sad;
 797         }
 798     }
 799     return acc;
 800 }
 801
 802
 803 static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
 804     AVFrame *pic=NULL;
 805     int64_t pts;
 806     int i;
 807     const int encoding_delay= s->max_b_frames;
 808     int direct=1;
 809
 810     if(pic_arg){
 811         pts= pic_arg->pts;
 812         pic_arg->display_picture_number= s->input_picture_number++;
 813
 814         if(pts != AV_NOPTS_VALUE){
 815             if(s->user_specified_pts != AV_NOPTS_VALUE){
 816                 int64_t time= pts;
 817                 int64_t last= s->user_specified_pts;
 818
 819                 if(time <= last){
 820                     av_log(s->avctx, AV_LOG_ERROR, "Error, Invalid timestamp=%"PRId64", last=%"PRId64"\n", pts, s->user_specified_pts);
 821                     return -1;
 822                 }
 823             }
 824             s->user_specified_pts= pts;
 825         }else{
 826             if(s->user_specified_pts != AV_NOPTS_VALUE){
 827                 s->user_specified_pts=
 828                 pts= s->user_specified_pts + 1;
 829                 av_log(s->avctx, AV_LOG_INFO, "Warning: AVFrame.pts=? trying to guess (%"PRId64")\n", pts);
 830             }else{
 831                 pts= pic_arg->display_picture_number;
 832             }
 833         }
 834     }
 835
 836   if(pic_arg){
 837     if(encoding_delay && !(s->flags&CODEC_FLAG_INPUT_PRESERVED)) direct=0;
 838     if(pic_arg->linesize[0] != s->linesize) direct=0;
 839     if(pic_arg->linesize[1] != s->uvlinesize) direct=0;
 840     if(pic_arg->linesize[2] != s->uvlinesize) direct=0;
 841
 842 //    av_log(AV_LOG_DEBUG, "%d %d %d %d\n",pic_arg->linesize[0], pic_arg->linesize[1], s->linesize, s->uvlinesize);
 843
 844     if(direct){
 845         i= ff_find_unused_picture(s, 1);
 846
 847         pic= (AVFrame*)&s->picture[i];
 848         pic->reference= 3;
 849
 850         for(i=0; i<4; i++){
 851             pic->data[i]= pic_arg->data[i];
 852             pic->linesize[i]= pic_arg->linesize[i];
 853         }
 854         if(ff_alloc_picture(s, (Picture*)pic, 1) < 0){
 855             return -1;
 856         }
 857     }else{
 858         i= ff_find_unused_picture(s, 0);
 859
 860         pic= (AVFrame*)&s->picture[i];
 861         pic->reference= 3;
 862
 863         if(ff_alloc_picture(s, (Picture*)pic, 0) < 0){
 864             return -1;
 865         }
 866
 867         if(   pic->data[0] + INPLACE_OFFSET == pic_arg->data[0]
 868            && pic->data[1] + INPLACE_OFFSET == pic_arg->data[1]
 869            && pic->data[2] + INPLACE_OFFSET == pic_arg->data[2]){
 870        // empty
 871         }else{
 872             int h_chroma_shift, v_chroma_shift;
 873             avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &h_chroma_shift, &v_chroma_shift);
 874
 875             for(i=0; i<3; i++){
 876                 int src_stride= pic_arg->linesize[i];
 877                 int dst_stride= i ? s->uvlinesize : s->linesize;
 878                 int h_shift= i ? h_chroma_shift : 0;
 879                 int v_shift= i ? v_chroma_shift : 0;
 880                 int w= s->width >>h_shift;
 881                 int h= s->height>>v_shift;
 882                 uint8_t *src= pic_arg->data[i];
 883                 uint8_t *dst= pic->data[i];
 884
 885                 if(!s->avctx->rc_buffer_size)
 886                     dst +=INPLACE_OFFSET;
 887
 888                 if(src_stride==dst_stride)
 889                     memcpy(dst, src, src_stride*h);
 890                 else{
 891                     while(h--){
 892                         memcpy(dst, src, w);
 893                         dst += dst_stride;
 894                         src += src_stride;
 895                     }
 896                 }
 897             }
 898         }
 899     }
 900     copy_picture_attributes(s, pic, pic_arg);
 901     pic->pts= pts; //we set this here to avoid modifiying pic_arg
 902   }
 903
 904     /* shift buffer entries */
 905     for(i=1; i<MAX_PICTURE_COUNT /*s->encoding_delay+1*/; i++)
 906         s->input_picture[i-1]= s->input_picture[i];
 907
 908     s->input_picture[encoding_delay]= (Picture*)pic;
 909
 910     return 0;
 911 }
 912
 913 static int skip_check(MpegEncContext *s, Picture *p, Picture *ref){
 914     int x, y, plane;
 915     int score=0;
 916     int64_t score64=0;
 917
 918     for(plane=0; plane<3; plane++){
 919         const int stride= p->linesize[plane];
 920         const int bw= plane ? 1 : 2;
 921         for(y=0; y<s->mb_height*bw; y++){
 922             for(x=0; x<s->mb_width*bw; x++){
 923                 int off= p->type == FF_BUFFER_TYPE_SHARED ? 0: 16;
 924                 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);
 925
 926                 switch(s->avctx->frame_skip_exp){
 927                     case 0: score= FFMAX(score, v); break;
 928                     case 1: score+= FFABS(v);break;
 929                     case 2: score+= v*v;break;
 930                     case 3: score64+= FFABS(v*v*(int64_t)v);break;
 931                     case 4: score64+= v*v*(int64_t)(v*v);break;
 932                 }
 933             }
 934         }
 935     }
 936
 937     if(score) score64= score;
 938
 939     if(score64 < s->avctx->frame_skip_threshold)
 940         return 1;
 941     if(score64 < ((s->avctx->frame_skip_factor * (int64_t)s->lambda)>>8))
 942         return 1;
 943     return 0;
 944 }
 945
 946 static int estimate_best_b_count(MpegEncContext *s){
 947     AVCodec *codec= avcodec_find_encoder(s->avctx->codec_id);
 948     AVCodecContext *c= avcodec_alloc_context();
 949     AVFrame input[FF_MAX_B_FRAMES+2];
 950     const int scale= s->avctx->brd_scale;
 951     int i, j, out_size, p_lambda, b_lambda, lambda2;
 952     int outbuf_size= s->width * s->height; //FIXME
 953     uint8_t *outbuf= av_malloc(outbuf_size);
 954     int64_t best_rd= INT64_MAX;
 955     int best_b_count= -1;
 956
 957     assert(scale>=0 && scale <=3);
 958
 959 //    emms_c();
 960     p_lambda= s->last_lambda_for[FF_P_TYPE]; //s->next_picture_ptr->quality;
 961     b_lambda= s->last_lambda_for[FF_B_TYPE]; //p_lambda *FFABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset;
 962     if(!b_lambda) b_lambda= p_lambda; //FIXME we should do this somewhere else
 963     lambda2= (b_lambda*b_lambda + (1<<FF_LAMBDA_SHIFT)/2 ) >> FF_LAMBDA_SHIFT;
 964
 965     c->width = s->width >> scale;
 966     c->height= s->height>> scale;
 967     c->flags= CODEC_FLAG_QSCALE | CODEC_FLAG_PSNR | CODEC_FLAG_INPUT_PRESERVED /*| CODEC_FLAG_EMU_EDGE*/;
 968     c->flags|= s->avctx->flags & CODEC_FLAG_QPEL;
 969     c->mb_decision= s->avctx->mb_decision;
 970     c->me_cmp= s->avctx->me_cmp;
 971     c->mb_cmp= s->avctx->mb_cmp;
 972     c->me_sub_cmp= s->avctx->me_sub_cmp;
 973     c->pix_fmt = PIX_FMT_YUV420P;
 974     c->time_base= s->avctx->time_base;
 975     c->max_b_frames= s->max_b_frames;
 976
 977     if (avcodec_open(c, codec) < 0)
 978         return -1;
 979
 980     for(i=0; i<s->max_b_frames+2; i++){
 981         int ysize= c->width*c->height;
 982         int csize= (c->width/2)*(c->height/2);
 983         Picture pre_input, *pre_input_ptr= i ? s->input_picture[i-1] : s->next_picture_ptr;
 984
 985         avcodec_get_frame_defaults(&input[i]);
 986         input[i].data[0]= av_malloc(ysize + 2*csize);
 987         input[i].data[1]= input[i].data[0] + ysize;
 988         input[i].data[2]= input[i].data[1] + csize;
 989         input[i].linesize[0]= c->width;
 990         input[i].linesize[1]=
 991         input[i].linesize[2]= c->width/2;
 992
 993         if(pre_input_ptr && (!i || s->input_picture[i-1])) {
 994             pre_input= *pre_input_ptr;
 995
 996             if(pre_input.type != FF_BUFFER_TYPE_SHARED && i) {
 997                 pre_input.data[0]+=INPLACE_OFFSET;
 998                 pre_input.data[1]+=INPLACE_OFFSET;
 999                 pre_input.data[2]+=INPLACE_OFFSET;
1000             }
1001
1002             s->dsp.shrink[scale](input[i].data[0], input[i].linesize[0], pre_input.data[0], pre_input.linesize[0], c->width, c->height);
1003             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);
1004             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);
1005         }
1006     }
1007
1008     for(j=0; j<s->max_b_frames+1; j++){
1009         int64_t rd=0;
1010
1011         if(!s->input_picture[j])
1012             break;
1013
1014         c->error[0]= c->error[1]= c->error[2]= 0;
1015
1016         input[0].pict_type= FF_I_TYPE;
1017         input[0].quality= 1 * FF_QP2LAMBDA;
1018         out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[0]);
1019 //        rd += (out_size * lambda2) >> FF_LAMBDA_SHIFT;
1020
1021         for(i=0; i<s->max_b_frames+1; i++){
1022             int is_p= i % (j+1) == j || i==s->max_b_frames;
1023
1024             input[i+1].pict_type= is_p ? FF_P_TYPE : FF_B_TYPE;
1025             input[i+1].quality= is_p ? p_lambda : b_lambda;
1026             out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[i+1]);
1027             rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
1028         }
1029
1030         /* get the delayed frames */
1031         while(out_size){
1032             out_size = avcodec_encode_video(c, outbuf, outbuf_size, NULL);
1033             rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
1034         }
1035
1036         rd += c->error[0] + c->error[1] + c->error[2];
1037
1038         if(rd < best_rd){
1039             best_rd= rd;
1040             best_b_count= j;
1041         }
1042     }
1043
1044     av_freep(&outbuf);
1045     avcodec_close(c);
1046     av_freep(&c);
1047
1048     for(i=0; i<s->max_b_frames+2; i++){
1049         av_freep(&input[i].data[0]);
1050     }
1051
1052     return best_b_count;
1053 }
1054
1055 static int select_input_picture(MpegEncContext *s){
1056     int i;
1057
1058     for(i=1; i<MAX_PICTURE_COUNT; i++)
1059         s->reordered_input_picture[i-1]= s->reordered_input_picture[i];
1060     s->reordered_input_picture[MAX_PICTURE_COUNT-1]= NULL;
1061
1062     /* set next picture type & ordering */
1063     if(s->reordered_input_picture[0]==NULL && s->input_picture[0]){
1064         if(/*s->picture_in_gop_number >= s->gop_size ||*/ s->next_picture_ptr==NULL || s->intra_only){
1065             s->reordered_input_picture[0]= s->input_picture[0];
1066             s->reordered_input_picture[0]->pict_type= FF_I_TYPE;
1067             s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
1068         }else{
1069             int b_frames;
1070
1071             if(s->avctx->frame_skip_threshold || s->avctx->frame_skip_factor){
1072                 if(s->picture_in_gop_number < s->gop_size && skip_check(s, s->input_picture[0], s->next_picture_ptr)){
1073                 //FIXME check that te gop check above is +-1 correct
1074 //av_log(NULL, AV_LOG_DEBUG, "skip %p %"PRId64"\n", s->input_picture[0]->data[0], s->input_picture[0]->pts);
1075
1076                     if(s->input_picture[0]->type == FF_BUFFER_TYPE_SHARED){
1077                         for(i=0; i<4; i++)
1078                             s->input_picture[0]->data[i]= NULL;
1079                         s->input_picture[0]->type= 0;
1080                     }else{
1081                         assert(   s->input_picture[0]->type==FF_BUFFER_TYPE_USER
1082                                || s->input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
1083
1084                         s->avctx->release_buffer(s->avctx, (AVFrame*)s->input_picture[0]);
1085                     }
1086
1087                     emms_c();
1088                     ff_vbv_update(s, 0);
1089
1090                     goto no_output_pic;
1091                 }
1092             }
1093
1094             if(s->flags&CODEC_FLAG_PASS2){
1095                 for(i=0; i<s->max_b_frames+1; i++){
1096                     int pict_num= s->input_picture[0]->display_picture_number + i;
1097
1098                     if(pict_num >= s->rc_context.num_entries)
1099                         break;
1100                     if(!s->input_picture[i]){
1101                         s->rc_context.entry[pict_num-1].new_pict_type = FF_P_TYPE;
1102                         break;
1103                     }
1104
1105                     s->input_picture[i]->pict_type=
1106                         s->rc_context.entry[pict_num].new_pict_type;
1107                 }
1108             }
1109
1110             if(s->avctx->b_frame_strategy==0){
1111                 b_frames= s->max_b_frames;
1112                 while(b_frames && !s->input_picture[b_frames]) b_frames--;
1113             }else if(s->avctx->b_frame_strategy==1){
1114                 for(i=1; i<s->max_b_frames+1; i++){
1115                     if(s->input_picture[i] && s->input_picture[i]->b_frame_score==0){
1116                         s->input_picture[i]->b_frame_score=
1117                             get_intra_count(s, s->input_picture[i  ]->data[0],
1118                                                s->input_picture[i-1]->data[0], s->linesize) + 1;
1119                     }
1120                 }
1121                 for(i=0; i<s->max_b_frames+1; i++){
1122                     if(s->input_picture[i]==NULL || s->input_picture[i]->b_frame_score - 1 > s->mb_num/s->avctx->b_sensitivity) break;
1123                 }
1124
1125                 b_frames= FFMAX(0, i-1);
1126
1127                 /* reset scores */
1128                 for(i=0; i<b_frames+1; i++){
1129                     s->input_picture[i]->b_frame_score=0;
1130                 }
1131             }else if(s->avctx->b_frame_strategy==2){
1132                 b_frames= estimate_best_b_count(s);
1133             }else{
1134                 av_log(s->avctx, AV_LOG_ERROR, "illegal b frame strategy\n");
1135                 b_frames=0;
1136             }
1137
1138             emms_c();
1139 //static int b_count=0;
1140 //b_count+= b_frames;
1141 //av_log(s->avctx, AV_LOG_DEBUG, "b_frames: %d\n", b_count);
1142
1143             for(i= b_frames - 1; i>=0; i--){
1144                 int type= s->input_picture[i]->pict_type;
1145                 if(type && type != FF_B_TYPE)
1146                     b_frames= i;
1147             }
1148             if(s->input_picture[b_frames]->pict_type == FF_B_TYPE && b_frames == s->max_b_frames){
1149                 av_log(s->avctx, AV_LOG_ERROR, "warning, too many b frames in a row\n");
1150             }
1151
1152             if(s->picture_in_gop_number + b_frames >= s->gop_size){
1153               if((s->flags2 & CODEC_FLAG2_STRICT_GOP) && s->gop_size > s->picture_in_gop_number){
1154                     b_frames= s->gop_size - s->picture_in_gop_number - 1;
1155               }else{
1156                 if(s->flags & CODEC_FLAG_CLOSED_GOP)
1157                     b_frames=0;
1158                 s->input_picture[b_frames]->pict_type= FF_I_TYPE;
1159               }
1160             }
1161
1162             if(   (s->flags & CODEC_FLAG_CLOSED_GOP)
1163                && b_frames
1164                && s->input_picture[b_frames]->pict_type== FF_I_TYPE)
1165                 b_frames--;
1166
1167             s->reordered_input_picture[0]= s->input_picture[b_frames];
1168             if(s->reordered_input_picture[0]->pict_type != FF_I_TYPE)
1169                 s->reordered_input_picture[0]->pict_type= FF_P_TYPE;
1170             s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
1171             for(i=0; i<b_frames; i++){
1172                 s->reordered_input_picture[i+1]= s->input_picture[i];
1173                 s->reordered_input_picture[i+1]->pict_type= FF_B_TYPE;
1174                 s->reordered_input_picture[i+1]->coded_picture_number= s->coded_picture_number++;
1175             }
1176         }
1177     }
1178 no_output_pic:
1179     if(s->reordered_input_picture[0]){
1180         s->reordered_input_picture[0]->reference= s->reordered_input_picture[0]->pict_type!=FF_B_TYPE ? 3 : 0;
1181
1182         ff_copy_picture(&s->new_picture, s->reordered_input_picture[0]);
1183
1184         if(s->reordered_input_picture[0]->type == FF_BUFFER_TYPE_SHARED || s->avctx->rc_buffer_size){
1185             // input is a shared pix, so we can't modifiy it -> alloc a new one & ensure that the shared one is reuseable
1186
1187             int i= ff_find_unused_picture(s, 0);
1188             Picture *pic= &s->picture[i];
1189
1190             pic->reference              = s->reordered_input_picture[0]->reference;
1191             if(ff_alloc_picture(s, pic, 0) < 0){
1192                 return -1;
1193             }
1194
1195             /* mark us unused / free shared pic */
1196             if(s->reordered_input_picture[0]->type == FF_BUFFER_TYPE_INTERNAL)
1197                 s->avctx->release_buffer(s->avctx, (AVFrame*)s->reordered_input_picture[0]);
1198             for(i=0; i<4; i++)
1199                 s->reordered_input_picture[0]->data[i]= NULL;
1200             s->reordered_input_picture[0]->type= 0;
1201
1202             copy_picture_attributes(s, (AVFrame*)pic, (AVFrame*)s->reordered_input_picture[0]);
1203
1204             s->current_picture_ptr= pic;
1205         }else{
1206             // input is not a shared pix -> reuse buffer for current_pix
1207
1208             assert(   s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_USER
1209                    || s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
1210
1211             s->current_picture_ptr= s->reordered_input_picture[0];
1212             for(i=0; i<4; i++){
1213                 s->new_picture.data[i]+= INPLACE_OFFSET;
1214             }
1215         }
1216         ff_copy_picture(&s->current_picture, s->current_picture_ptr);
1217
1218         s->picture_number= s->new_picture.display_picture_number;
1219 //printf("dpn:%d\n", s->picture_number);
1220     }else{
1221        memset(&s->new_picture, 0, sizeof(Picture));
1222     }
1223     return 0;
1224 }
1225
1226 int MPV_encode_picture(AVCodecContext *avctx,
1227                        unsigned char *buf, int buf_size, void *data)
1228 {
1229     MpegEncContext *s = avctx->priv_data;
1230     AVFrame *pic_arg = data;
1231     int i, stuffing_count;
1232
1233     for(i=0; i<avctx->thread_count; i++){
1234         int start_y= s->thread_context[i]->start_mb_y;
1235         int   end_y= s->thread_context[i]->  end_mb_y;
1236         int h= s->mb_height;
1237         uint8_t *start= buf + (size_t)(((int64_t) buf_size)*start_y/h);
1238         uint8_t *end  = buf + (size_t)(((int64_t) buf_size)*  end_y/h);
1239
1240         init_put_bits(&s->thread_context[i]->pb, start, end - start);
1241     }
1242
1243     s->picture_in_gop_number++;
1244
1245     if(load_input_picture(s, pic_arg) < 0)
1246         return -1;
1247
1248     if(select_input_picture(s) < 0){
1249         return -1;
1250     }
1251
1252     /* output? */
1253     if(s->new_picture.data[0]){
1254         s->pict_type= s->new_picture.pict_type;
1255 //emms_c();
1256 //printf("qs:%f %f %d\n", s->new_picture.quality, s->current_picture.quality, s->qscale);
1257         MPV_frame_start(s, avctx);
1258 vbv_retry:
1259         if (encode_picture(s, s->picture_number) < 0)
1260             return -1;
1261
1262         avctx->header_bits = s->header_bits;
1263         avctx->mv_bits     = s->mv_bits;
1264         avctx->misc_bits   = s->misc_bits;
1265         avctx->i_tex_bits  = s->i_tex_bits;
1266         avctx->p_tex_bits  = s->p_tex_bits;
1267         avctx->i_count     = s->i_count;
1268         avctx->p_count     = s->mb_num - s->i_count - s->skip_count; //FIXME f/b_count in avctx
1269         avctx->skip_count  = s->skip_count;
1270
1271         MPV_frame_end(s);
1272
1273         if (CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG)
1274             ff_mjpeg_encode_picture_trailer(s);
1275
1276         if(avctx->rc_buffer_size){
1277             RateControlContext *rcc= &s->rc_context;
1278             int max_size= rcc->buffer_index * avctx->rc_max_available_vbv_use;
1279
1280             if(put_bits_count(&s->pb) > max_size && s->lambda < s->avctx->lmax){
1281                 s->next_lambda= FFMAX(s->lambda+1, s->lambda*(s->qscale+1) / s->qscale);
1282                 if(s->adaptive_quant){
1283                     int i;
1284                     for(i=0; i<s->mb_height*s->mb_stride; i++)
1285                         s->lambda_table[i]= FFMAX(s->lambda_table[i]+1, s->lambda_table[i]*(s->qscale+1) / s->qscale);
1286                 }
1287                 s->mb_skipped = 0;        //done in MPV_frame_start()
1288                 if(s->pict_type==FF_P_TYPE){ //done in encode_picture() so we must undo it
1289                     if(s->flipflop_rounding || s->codec_id == CODEC_ID_H263P || s->codec_id == CODEC_ID_MPEG4)
1290                         s->no_rounding ^= 1;
1291                 }
1292                 if(s->pict_type!=FF_B_TYPE){
1293                     s->time_base= s->last_time_base;
1294                     s->last_non_b_time= s->time - s->pp_time;
1295                 }
1296 //                av_log(NULL, AV_LOG_ERROR, "R:%d ", s->next_lambda);
1297                 for(i=0; i<avctx->thread_count; i++){
1298                     PutBitContext *pb= &s->thread_context[i]->pb;
1299                     init_put_bits(pb, pb->buf, pb->buf_end - pb->buf);
1300                 }
1301                 goto vbv_retry;
1302             }
1303
1304             assert(s->avctx->rc_max_rate);
1305         }
1306
1307         if(s->flags&CODEC_FLAG_PASS1)
1308             ff_write_pass1_stats(s);
1309
1310         for(i=0; i<4; i++){
1311             s->current_picture_ptr->error[i]= s->current_picture.error[i];
1312             avctx->error[i] += s->current_picture_ptr->error[i];
1313         }
1314
1315         if(s->flags&CODEC_FLAG_PASS1)
1316             assert(avctx->header_bits + avctx->mv_bits + avctx->misc_bits + avctx->i_tex_bits + avctx->p_tex_bits == put_bits_count(&s->pb));
1317         flush_put_bits(&s->pb);
1318         s->frame_bits  = put_bits_count(&s->pb);
1319
1320         stuffing_count= ff_vbv_update(s, s->frame_bits);
1321         if(stuffing_count){
1322             if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < stuffing_count + 50){
1323                 av_log(s->avctx, AV_LOG_ERROR, "stuffing too large\n");
1324                 return -1;
1325             }
1326
1327             switch(s->codec_id){
1328             case CODEC_ID_MPEG1VIDEO:
1329             case CODEC_ID_MPEG2VIDEO:
1330                 while(stuffing_count--){
1331                     put_bits(&s->pb, 8, 0);
1332                 }
1333             break;
1334             case CODEC_ID_MPEG4:
1335                 put_bits(&s->pb, 16, 0);
1336                 put_bits(&s->pb, 16, 0x1C3);
1337                 stuffing_count -= 4;
1338                 while(stuffing_count--){
1339                     put_bits(&s->pb, 8, 0xFF);
1340                 }
1341             break;
1342             default:
1343                 av_log(s->avctx, AV_LOG_ERROR, "vbv buffer overflow\n");
1344             }
1345             flush_put_bits(&s->pb);
1346             s->frame_bits  = put_bits_count(&s->pb);
1347         }
1348
1349         /* update mpeg1/2 vbv_delay for CBR */
1350         if(s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate && s->out_format == FMT_MPEG1
1351            && 90000LL * (avctx->rc_buffer_size-1) <= s->avctx->rc_max_rate*0xFFFFLL){
1352             int vbv_delay, min_delay;
1353             double inbits = s->avctx->rc_max_rate*av_q2d(s->avctx->time_base);
1354             int    minbits= s->frame_bits - 8*(s->vbv_delay_ptr - s->pb.buf - 1);
1355             double bits   = s->rc_context.buffer_index + minbits - inbits;
1356
1357             if(bits<0)
1358                 av_log(s->avctx, AV_LOG_ERROR, "Internal error, negative bits\n");
1359
1360             assert(s->repeat_first_field==0);
1361
1362             vbv_delay=     bits * 90000                               / s->avctx->rc_max_rate;
1363             min_delay= (minbits * 90000LL + s->avctx->rc_max_rate - 1)/ s->avctx->rc_max_rate;
1364
1365             vbv_delay= FFMAX(vbv_delay, min_delay);
1366
1367             assert(vbv_delay < 0xFFFF);
1368
1369             s->vbv_delay_ptr[0] &= 0xF8;
1370             s->vbv_delay_ptr[0] |= vbv_delay>>13;
1371             s->vbv_delay_ptr[1]  = vbv_delay>>5;
1372             s->vbv_delay_ptr[2] &= 0x07;
1373             s->vbv_delay_ptr[2] |= vbv_delay<<3;
1374         }
1375         s->total_bits += s->frame_bits;
1376         avctx->frame_bits  = s->frame_bits;
1377     }else{
1378         assert((put_bits_ptr(&s->pb) == s->pb.buf));
1379         s->frame_bits=0;
1380     }
1381     assert((s->frame_bits&7)==0);
1382
1383     return s->frame_bits/8;
1384 }
1385
1386 static inline void dct_single_coeff_elimination(MpegEncContext *s, int n, int threshold)
1387 {
1388     static const char tab[64]=
1389         {3,2,2,1,1,1,1,1,
1390          1,1,1,1,1,1,1,1,
1391          1,1,1,1,1,1,1,1,
1392          0,0,0,0,0,0,0,0,
1393          0,0,0,0,0,0,0,0,
1394          0,0,0,0,0,0,0,0,
1395          0,0,0,0,0,0,0,0,
1396          0,0,0,0,0,0,0,0};
1397     int score=0;
1398     int run=0;
1399     int i;
1400     DCTELEM *block= s->block[n];
1401     const int last_index= s->block_last_index[n];
1402     int skip_dc;
1403
1404     if(threshold<0){
1405         skip_dc=0;
1406         threshold= -threshold;
1407     }else
1408         skip_dc=1;
1409
1410     /* Are all we could set to zero already zero? */
1411     if(last_index<=skip_dc - 1) return;
1412
1413     for(i=0; i<=last_index; i++){
1414         const int j = s->intra_scantable.permutated[i];
1415         const int level = FFABS(block[j]);
1416         if(level==1){
1417             if(skip_dc && i==0) continue;
1418             score+= tab[run];
1419             run=0;
1420         }else if(level>1){
1421             return;
1422         }else{
1423             run++;
1424         }
1425     }
1426     if(score >= threshold) return;
1427     for(i=skip_dc; i<=last_index; i++){
1428         const int j = s->intra_scantable.permutated[i];
1429         block[j]=0;
1430     }
1431     if(block[0]) s->block_last_index[n]= 0;
1432     else         s->block_last_index[n]= -1;
1433 }
1434
1435 static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block, int last_index)
1436 {
1437     int i;
1438     const int maxlevel= s->max_qcoeff;
1439     const int minlevel= s->min_qcoeff;
1440     int overflow=0;
1441
1442     if(s->mb_intra){
1443         i=1; //skip clipping of intra dc
1444     }else
1445         i=0;
1446
1447     for(;i<=last_index; i++){
1448         const int j= s->intra_scantable.permutated[i];
1449         int level = block[j];
1450
1451         if     (level>maxlevel){
1452             level=maxlevel;
1453             overflow++;
1454         }else if(level<minlevel){
1455             level=minlevel;
1456             overflow++;
1457         }
1458
1459         block[j]= level;
1460     }
1461
1462     if(overflow && s->avctx->mb_decision == FF_MB_DECISION_SIMPLE)
1463         av_log(s->avctx, AV_LOG_INFO, "warning, clipping %d dct coefficients to %d..%d\n", overflow, minlevel, maxlevel);
1464 }
1465
1466 static void get_visual_weight(int16_t *weight, uint8_t *ptr, int stride){
1467     int x, y;
1468 //FIXME optimize
1469     for(y=0; y<8; y++){
1470         for(x=0; x<8; x++){
1471             int x2, y2;
1472             int sum=0;
1473             int sqr=0;
1474             int count=0;
1475
1476             for(y2= FFMAX(y-1, 0); y2 < FFMIN(8, y+2); y2++){
1477                 for(x2= FFMAX(x-1, 0); x2 < FFMIN(8, x+2); x2++){
1478                     int v= ptr[x2 + y2*stride];
1479                     sum += v;
1480                     sqr += v*v;
1481                     count++;
1482                 }
1483             }
1484             weight[x + 8*y]= (36*ff_sqrt(count*sqr - sum*sum)) / count;
1485         }
1486     }
1487 }
1488
1489 static av_always_inline void encode_mb_internal(MpegEncContext *s, int motion_x, int motion_y, int mb_block_height, int mb_block_count)
1490 {
1491     int16_t weight[8][64];
1492     DCTELEM orig[8][64];
1493     const int mb_x= s->mb_x;
1494     const int mb_y= s->mb_y;
1495     int i;
1496     int skip_dct[8];
1497     int dct_offset   = s->linesize*8; //default for progressive frames
1498     uint8_t *ptr_y, *ptr_cb, *ptr_cr;
1499     int wrap_y, wrap_c;
1500
1501     for(i=0; i<mb_block_count; i++) skip_dct[i]=s->skipdct;
1502
1503     if(s->adaptive_quant){
1504         const int last_qp= s->qscale;
1505         const int mb_xy= mb_x + mb_y*s->mb_stride;
1506
1507         s->lambda= s->lambda_table[mb_xy];
1508         update_qscale(s);
1509
1510         if(!(s->flags&CODEC_FLAG_QP_RD)){
1511             s->qscale= s->current_picture_ptr->qscale_table[mb_xy];
1512             s->dquant= s->qscale - last_qp;
1513
1514             if(s->out_format==FMT_H263){
1515                 s->dquant= av_clip(s->dquant, -2, 2);
1516
1517                 if(s->codec_id==CODEC_ID_MPEG4){
1518                     if(!s->mb_intra){
1519                         if(s->pict_type == FF_B_TYPE){
1520                             if(s->dquant&1 || s->mv_dir&MV_DIRECT)
1521                                 s->dquant= 0;
1522                         }
1523                         if(s->mv_type==MV_TYPE_8X8)
1524                             s->dquant=0;
1525                     }
1526                 }
1527             }
1528         }
1529         ff_set_qscale(s, last_qp + s->dquant);
1530     }else if(s->flags&CODEC_FLAG_QP_RD)
1531         ff_set_qscale(s, s->qscale + s->dquant);
1532
1533     wrap_y = s->linesize;
1534     wrap_c = s->uvlinesize;
1535     ptr_y = s->new_picture.data[0] + (mb_y * 16 * wrap_y) + mb_x * 16;
1536     ptr_cb = s->new_picture.data[1] + (mb_y * mb_block_height * wrap_c) + mb_x * 8;
1537     ptr_cr = s->new_picture.data[2] + (mb_y * mb_block_height * wrap_c) + mb_x * 8;
1538
1539     if(mb_x*16+16 > s->width || mb_y*16+16 > s->height){
1540         uint8_t *ebuf= s->edge_emu_buffer + 32;
1541         ff_emulated_edge_mc(ebuf            , ptr_y , wrap_y,16,16,mb_x*16,mb_y*16, s->width   , s->height);
1542         ptr_y= ebuf;
1543         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);
1544         ptr_cb= ebuf+18*wrap_y;
1545         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);
1546         ptr_cr= ebuf+18*wrap_y+8;
1547     }
1548
1549     if (s->mb_intra) {
1550         if(s->flags&CODEC_FLAG_INTERLACED_DCT){
1551             int progressive_score, interlaced_score;
1552
1553             s->interlaced_dct=0;
1554             progressive_score= s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y, 8)
1555                               +s->dsp.ildct_cmp[4](s, ptr_y + wrap_y*8, NULL, wrap_y, 8) - 400;
1556
1557             if(progressive_score > 0){
1558                 interlaced_score = s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y*2, 8)
1559                                   +s->dsp.ildct_cmp[4](s, ptr_y + wrap_y  , NULL, wrap_y*2, 8);
1560                 if(progressive_score > interlaced_score){
1561                     s->interlaced_dct=1;
1562
1563                     dct_offset= wrap_y;
1564                     wrap_y<<=1;
1565                     if (s->chroma_format == CHROMA_422)
1566                         wrap_c<<=1;
1567                 }
1568             }
1569         }
1570
1571         s->dsp.get_pixels(s->block[0], ptr_y                 , wrap_y);
1572         s->dsp.get_pixels(s->block[1], ptr_y              + 8, wrap_y);
1573         s->dsp.get_pixels(s->block[2], ptr_y + dct_offset    , wrap_y);
1574         s->dsp.get_pixels(s->block[3], ptr_y + dct_offset + 8, wrap_y);
1575
1576         if(s->flags&CODEC_FLAG_GRAY){
1577             skip_dct[4]= 1;
1578             skip_dct[5]= 1;
1579         }else{
1580             s->dsp.get_pixels(s->block[4], ptr_cb, wrap_c);
1581             s->dsp.get_pixels(s->block[5], ptr_cr, wrap_c);
1582             if(!s->chroma_y_shift){ /* 422 */
1583                 s->dsp.get_pixels(s->block[6], ptr_cb + (dct_offset>>1), wrap_c);
1584                 s->dsp.get_pixels(s->block[7], ptr_cr + (dct_offset>>1), wrap_c);
1585             }
1586         }
1587     }else{
1588         op_pixels_func (*op_pix)[4];
1589         qpel_mc_func (*op_qpix)[16];
1590         uint8_t *dest_y, *dest_cb, *dest_cr;
1591
1592         dest_y  = s->dest[0];
1593         dest_cb = s->dest[1];
1594         dest_cr = s->dest[2];
1595
1596         if ((!s->no_rounding) || s->pict_type==FF_B_TYPE){
1597             op_pix = s->dsp.put_pixels_tab;
1598             op_qpix= s->dsp.put_qpel_pixels_tab;
1599         }else{
1600             op_pix = s->dsp.put_no_rnd_pixels_tab;
1601             op_qpix= s->dsp.put_no_rnd_qpel_pixels_tab;
1602         }
1603
1604         if (s->mv_dir & MV_DIR_FORWARD) {
1605             MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix, op_qpix);
1606             op_pix = s->dsp.avg_pixels_tab;
1607             op_qpix= s->dsp.avg_qpel_pixels_tab;
1608         }
1609         if (s->mv_dir & MV_DIR_BACKWARD) {
1610             MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix, op_qpix);
1611         }
1612
1613         if(s->flags&CODEC_FLAG_INTERLACED_DCT){
1614             int progressive_score, interlaced_score;
1615
1616             s->interlaced_dct=0;
1617             progressive_score= s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y, 8)
1618                               +s->dsp.ildct_cmp[0](s, dest_y + wrap_y*8, ptr_y + wrap_y*8, wrap_y, 8) - 400;
1619
1620             if(s->avctx->ildct_cmp == FF_CMP_VSSE) progressive_score -= 400;
1621
1622             if(progressive_score>0){
1623                 interlaced_score = s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y*2, 8)
1624                                   +s->dsp.ildct_cmp[0](s, dest_y + wrap_y  , ptr_y + wrap_y  , wrap_y*2, 8);
1625
1626                 if(progressive_score > interlaced_score){
1627                     s->interlaced_dct=1;
1628
1629                     dct_offset= wrap_y;
1630                     wrap_y<<=1;
1631                     if (s->chroma_format == CHROMA_422)
1632                         wrap_c<<=1;
1633                 }
1634             }
1635         }
1636
1637         s->dsp.diff_pixels(s->block[0], ptr_y                 , dest_y                 , wrap_y);
1638         s->dsp.diff_pixels(s->block[1], ptr_y              + 8, dest_y              + 8, wrap_y);
1639         s->dsp.diff_pixels(s->block[2], ptr_y + dct_offset    , dest_y + dct_offset    , wrap_y);
1640         s->dsp.diff_pixels(s->block[3], ptr_y + dct_offset + 8, dest_y + dct_offset + 8, wrap_y);
1641
1642         if(s->flags&CODEC_FLAG_GRAY){
1643             skip_dct[4]= 1;
1644             skip_dct[5]= 1;
1645         }else{
1646             s->dsp.diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
1647             s->dsp.diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
1648             if(!s->chroma_y_shift){ /* 422 */
1649                 s->dsp.diff_pixels(s->block[6], ptr_cb + (dct_offset>>1), dest_cb + (dct_offset>>1), wrap_c);
1650                 s->dsp.diff_pixels(s->block[7], ptr_cr + (dct_offset>>1), dest_cr + (dct_offset>>1), wrap_c);
1651             }
1652         }
1653         /* pre quantization */
1654         if(s->current_picture.mc_mb_var[s->mb_stride*mb_y+ mb_x]<2*s->qscale*s->qscale){
1655             //FIXME optimize
1656             if(s->dsp.sad[1](NULL, ptr_y               , dest_y               , wrap_y, 8) < 20*s->qscale) skip_dct[0]= 1;
1657             if(s->dsp.sad[1](NULL, ptr_y            + 8, dest_y            + 8, wrap_y, 8) < 20*s->qscale) skip_dct[1]= 1;
1658             if(s->dsp.sad[1](NULL, ptr_y +dct_offset   , dest_y +dct_offset   , wrap_y, 8) < 20*s->qscale) skip_dct[2]= 1;
1659             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;
1660             if(s->dsp.sad[1](NULL, ptr_cb              , dest_cb              , wrap_c, 8) < 20*s->qscale) skip_dct[4]= 1;
1661             if(s->dsp.sad[1](NULL, ptr_cr              , dest_cr              , wrap_c, 8) < 20*s->qscale) skip_dct[5]= 1;
1662             if(!s->chroma_y_shift){ /* 422 */
1663                 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;
1664                 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;
1665             }
1666         }
1667     }
1668
1669     if(s->avctx->quantizer_noise_shaping){
1670         if(!skip_dct[0]) get_visual_weight(weight[0], ptr_y                 , wrap_y);
1671         if(!skip_dct[1]) get_visual_weight(weight[1], ptr_y              + 8, wrap_y);
1672         if(!skip_dct[2]) get_visual_weight(weight[2], ptr_y + dct_offset    , wrap_y);
1673         if(!skip_dct[3]) get_visual_weight(weight[3], ptr_y + dct_offset + 8, wrap_y);
1674         if(!skip_dct[4]) get_visual_weight(weight[4], ptr_cb                , wrap_c);
1675         if(!skip_dct[5]) get_visual_weight(weight[5], ptr_cr                , wrap_c);
1676         if(!s->chroma_y_shift){ /* 422 */
1677             if(!skip_dct[6]) get_visual_weight(weight[6], ptr_cb + (dct_offset>>1), wrap_c);
1678             if(!skip_dct[7]) get_visual_weight(weight[7], ptr_cr + (dct_offset>>1), wrap_c);
1679         }
1680         memcpy(orig[0], s->block[0], sizeof(DCTELEM)*64*mb_block_count);
1681     }
1682
1683     /* DCT & quantize */
1684     assert(s->out_format!=FMT_MJPEG || s->qscale==8);
1685     {
1686         for(i=0;i<mb_block_count;i++) {
1687             if(!skip_dct[i]){
1688                 int overflow;
1689                 s->block_last_index[i] = s->dct_quantize(s, s->block[i], i, s->qscale, &overflow);
1690             // FIXME we could decide to change to quantizer instead of clipping
1691             // JS: I don't think that would be a good idea it could lower quality instead
1692             //     of improve it. Just INTRADC clipping deserves changes in quantizer
1693                 if (overflow) clip_coeffs(s, s->block[i], s->block_last_index[i]);
1694             }else
1695                 s->block_last_index[i]= -1;
1696         }
1697         if(s->avctx->quantizer_noise_shaping){
1698             for(i=0;i<mb_block_count;i++) {
1699                 if(!skip_dct[i]){
1700                     s->block_last_index[i] = dct_quantize_refine(s, s->block[i], weight[i], orig[i], i, s->qscale);
1701                 }
1702             }
1703         }
1704
1705         if(s->luma_elim_threshold && !s->mb_intra)
1706             for(i=0; i<4; i++)
1707                 dct_single_coeff_elimination(s, i, s->luma_elim_threshold);
1708         if(s->chroma_elim_threshold && !s->mb_intra)
1709             for(i=4; i<mb_block_count; i++)
1710                 dct_single_coeff_elimination(s, i, s->chroma_elim_threshold);
1711
1712         if(s->flags & CODEC_FLAG_CBP_RD){
1713             for(i=0;i<mb_block_count;i++) {
1714                 if(s->block_last_index[i] == -1)
1715                     s->coded_score[i]= INT_MAX/256;
1716             }
1717         }
1718     }
1719
1720     if((s->flags&CODEC_FLAG_GRAY) && s->mb_intra){
1721         s->block_last_index[4]=
1722         s->block_last_index[5]= 0;
1723         s->block[4][0]=
1724         s->block[5][0]= (1024 + s->c_dc_scale/2)/ s->c_dc_scale;
1725     }
1726
1727     //non c quantize code returns incorrect block_last_index FIXME
1728     if(s->alternate_scan && s->dct_quantize != dct_quantize_c){
1729         for(i=0; i<mb_block_count; i++){
1730             int j;
1731             if(s->block_last_index[i]>0){
1732                 for(j=63; j>0; j--){
1733                     if(s->block[i][ s->intra_scantable.permutated[j] ]) break;
1734                 }
1735                 s->block_last_index[i]= j;
1736             }
1737         }
1738     }
1739
1740     /* huffman encode */
1741     switch(s->codec_id){ //FIXME funct ptr could be slightly faster
1742     case CODEC_ID_MPEG1VIDEO:
1743     case CODEC_ID_MPEG2VIDEO:
1744         if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
1745             mpeg1_encode_mb(s, s->block, motion_x, motion_y);
1746         break;
1747     case CODEC_ID_MPEG4:
1748         if (CONFIG_MPEG4_ENCODER)
1749             mpeg4_encode_mb(s, s->block, motion_x, motion_y);
1750         break;
1751     case CODEC_ID_MSMPEG4V2:
1752     case CODEC_ID_MSMPEG4V3:
1753     case CODEC_ID_WMV1:
1754         if (CONFIG_MSMPEG4_ENCODER)
1755             msmpeg4_encode_mb(s, s->block, motion_x, motion_y);
1756         break;
1757     case CODEC_ID_WMV2:
1758         if (CONFIG_WMV2_ENCODER)
1759             ff_wmv2_encode_mb(s, s->block, motion_x, motion_y);
1760         break;
1761     case CODEC_ID_H261:
1762         if (CONFIG_H261_ENCODER)
1763             ff_h261_encode_mb(s, s->block, motion_x, motion_y);
1764         break;
1765     case CODEC_ID_H263:
1766     case CODEC_ID_H263P:
1767     case CODEC_ID_FLV1:
1768     case CODEC_ID_RV10:
1769     case CODEC_ID_RV20:
1770         if (CONFIG_H263_ENCODER)
1771             h263_encode_mb(s, s->block, motion_x, motion_y);
1772         break;
1773     case CODEC_ID_MJPEG:
1774         if (CONFIG_MJPEG_ENCODER)
1775             ff_mjpeg_encode_mb(s, s->block);
1776         break;
1777     default:
1778         assert(0);
1779     }
1780 }
1781
1782 static av_always_inline void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
1783 {
1784     if (s->chroma_format == CHROMA_420) encode_mb_internal(s, motion_x, motion_y,  8, 6);
1785     else                                encode_mb_internal(s, motion_x, motion_y, 16, 8);
1786 }
1787
1788 static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type){
1789     int i;
1790
1791     memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
1792
1793     /* mpeg1 */
1794     d->mb_skip_run= s->mb_skip_run;
1795     for(i=0; i<3; i++)
1796         d->last_dc[i]= s->last_dc[i];
1797
1798     /* statistics */
1799     d->mv_bits= s->mv_bits;
1800     d->i_tex_bits= s->i_tex_bits;
1801     d->p_tex_bits= s->p_tex_bits;
1802     d->i_count= s->i_count;
1803     d->f_count= s->f_count;
1804     d->b_count= s->b_count;
1805     d->skip_count= s->skip_count;
1806     d->misc_bits= s->misc_bits;
1807     d->last_bits= 0;
1808
1809     d->mb_skipped= 0;
1810     d->qscale= s->qscale;
1811     d->dquant= s->dquant;
1812
1813     d->esc3_level_length= s->esc3_level_length;
1814 }
1815
1816 static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int type){
1817     int i;
1818
1819     memcpy(d->mv, s->mv, 2*4*2*sizeof(int));
1820     memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
1821
1822     /* mpeg1 */
1823     d->mb_skip_run= s->mb_skip_run;
1824     for(i=0; i<3; i++)
1825         d->last_dc[i]= s->last_dc[i];
1826
1827     /* statistics */
1828     d->mv_bits= s->mv_bits;
1829     d->i_tex_bits= s->i_tex_bits;
1830     d->p_tex_bits= s->p_tex_bits;
1831     d->i_count= s->i_count;
1832     d->f_count= s->f_count;
1833     d->b_count= s->b_count;
1834     d->skip_count= s->skip_count;
1835     d->misc_bits= s->misc_bits;
1836
1837     d->mb_intra= s->mb_intra;
1838     d->mb_skipped= s->mb_skipped;
1839     d->mv_type= s->mv_type;
1840     d->mv_dir= s->mv_dir;
1841     d->pb= s->pb;
1842     if(s->data_partitioning){
1843         d->pb2= s->pb2;
1844         d->tex_pb= s->tex_pb;
1845     }
1846     d->block= s->block;
1847     for(i=0; i<8; i++)
1848         d->block_last_index[i]= s->block_last_index[i];
1849     d->interlaced_dct= s->interlaced_dct;
1850     d->qscale= s->qscale;
1851
1852     d->esc3_level_length= s->esc3_level_length;
1853 }
1854
1855 static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type,
1856                            PutBitContext pb[2], PutBitContext pb2[2], PutBitContext tex_pb[2],
1857                            int *dmin, int *next_block, int motion_x, int motion_y)
1858 {
1859     int score;
1860     uint8_t *dest_backup[3];
1861
1862     copy_context_before_encode(s, backup, type);
1863
1864     s->block= s->blocks[*next_block];
1865     s->pb= pb[*next_block];
1866     if(s->data_partitioning){
1867         s->pb2   = pb2   [*next_block];
1868         s->tex_pb= tex_pb[*next_block];
1869     }
1870
1871     if(*next_block){
1872         memcpy(dest_backup, s->dest, sizeof(s->dest));
1873         s->dest[0] = s->rd_scratchpad;
1874         s->dest[1] = s->rd_scratchpad + 16*s->linesize;
1875         s->dest[2] = s->rd_scratchpad + 16*s->linesize + 8;
1876         assert(s->linesize >= 32); //FIXME
1877     }
1878
1879     encode_mb(s, motion_x, motion_y);
1880
1881     score= put_bits_count(&s->pb);
1882     if(s->data_partitioning){
1883         score+= put_bits_count(&s->pb2);
1884         score+= put_bits_count(&s->tex_pb);
1885     }
1886
1887     if(s->avctx->mb_decision == FF_MB_DECISION_RD){
1888         MPV_decode_mb(s, s->block);
1889
1890         score *= s->lambda2;
1891         score += sse_mb(s) << FF_LAMBDA_SHIFT;
1892     }
1893
1894     if(*next_block){
1895         memcpy(s->dest, dest_backup, sizeof(s->dest));
1896     }
1897
1898     if(score<*dmin){
1899         *dmin= score;
1900         *next_block^=1;
1901
1902         copy_context_after_encode(best, s, type);
1903     }
1904 }
1905
1906 static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride){
1907     uint32_t *sq = ff_squareTbl + 256;
1908     int acc=0;
1909     int x,y;
1910
1911     if(w==16 && h==16)
1912         return s->dsp.sse[0](NULL, src1, src2, stride, 16);
1913     else if(w==8 && h==8)
1914         return s->dsp.sse[1](NULL, src1, src2, stride, 8);
1915
1916     for(y=0; y<h; y++){
1917         for(x=0; x<w; x++){
1918             acc+= sq[src1[x + y*stride] - src2[x + y*stride]];
1919         }
1920     }
1921
1922     assert(acc>=0);
1923
1924     return acc;
1925 }
1926
1927 static int sse_mb(MpegEncContext *s){
1928     int w= 16;
1929     int h= 16;
1930
1931     if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
1932     if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
1933
1934     if(w==16 && h==16)
1935       if(s->avctx->mb_cmp == FF_CMP_NSSE){
1936         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)
1937                +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)
1938                +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);
1939       }else{
1940         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)
1941                +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)
1942                +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);
1943       }
1944     else
1945         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)
1946                +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)
1947                +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);
1948 }
1949
1950 static int pre_estimate_motion_thread(AVCodecContext *c, void *arg){
1951     MpegEncContext *s= *(void**)arg;
1952
1953
1954     s->me.pre_pass=1;
1955     s->me.dia_size= s->avctx->pre_dia_size;
1956     s->first_slice_line=1;
1957     for(s->mb_y= s->end_mb_y-1; s->mb_y >= s->start_mb_y; s->mb_y--) {
1958         for(s->mb_x=s->mb_width-1; s->mb_x >=0 ;s->mb_x--) {
1959             ff_pre_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
1960         }
1961         s->first_slice_line=0;
1962     }
1963
1964     s->me.pre_pass=0;
1965
1966     return 0;
1967 }
1968
1969 static int estimate_motion_thread(AVCodecContext *c, void *arg){
1970     MpegEncContext *s= *(void**)arg;
1971
1972     ff_check_alignment();
1973
1974     s->me.dia_size= s->avctx->dia_size;
1975     s->first_slice_line=1;
1976     for(s->mb_y= s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
1977         s->mb_x=0; //for block init below
1978         ff_init_block_index(s);
1979         for(s->mb_x=0; s->mb_x < s->mb_width; s->mb_x++) {
1980             s->block_index[0]+=2;
1981             s->block_index[1]+=2;
1982             s->block_index[2]+=2;
1983             s->block_index[3]+=2;
1984
1985             /* compute motion vector & mb_type and store in context */
1986             if(s->pict_type==FF_B_TYPE)
1987                 ff_estimate_b_frame_motion(s, s->mb_x, s->mb_y);
1988             else
1989                 ff_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
1990         }
1991         s->first_slice_line=0;
1992     }
1993     return 0;
1994 }
1995
1996 static int mb_var_thread(AVCodecContext *c, void *arg){
1997     MpegEncContext *s= *(void**)arg;
1998     int mb_x, mb_y;
1999
2000     ff_check_alignment();
2001
2002     for(mb_y=s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
2003         for(mb_x=0; mb_x < s->mb_width; mb_x++) {
2004             int xx = mb_x * 16;
2005             int yy = mb_y * 16;
2006             uint8_t *pix = s->new_picture.data[0] + (yy * s->linesize) + xx;
2007             int varc;
2008             int sum = s->dsp.pix_sum(pix, s->linesize);
2009
2010             varc = (s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)(sum*sum))>>8) + 500 + 128)>>8;
2011
2012             s->current_picture.mb_var [s->mb_stride * mb_y + mb_x] = varc;
2013             s->current_picture.mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8;
2014             s->me.mb_var_sum_temp    += varc;
2015         }
2016     }
2017     return 0;
2018 }
2019
2020 static void write_slice_end(MpegEncContext *s){
2021     if(CONFIG_MPEG4_ENCODER && s->codec_id==CODEC_ID_MPEG4){
2022         if(s->partitioned_frame){
2023             ff_mpeg4_merge_partitions(s);
2024         }
2025
2026         ff_mpeg4_stuffing(&s->pb);
2027     }else if(CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG){
2028         ff_mjpeg_encode_stuffing(&s->pb);
2029     }
2030
2031     align_put_bits(&s->pb);
2032     flush_put_bits(&s->pb);
2033
2034     if((s->flags&CODEC_FLAG_PASS1) && !s->partitioned_frame)
2035         s->misc_bits+= get_bits_diff(s);
2036 }
2037
2038 static int encode_thread(AVCodecContext *c, void *arg){
2039     MpegEncContext *s= *(void**)arg;
2040     int mb_x, mb_y, pdif = 0;
2041     int chr_h= 16>>s->chroma_y_shift;
2042     int i, j;
2043     MpegEncContext best_s, backup_s;
2044     uint8_t bit_buf[2][MAX_MB_BYTES];
2045     uint8_t bit_buf2[2][MAX_MB_BYTES];
2046     uint8_t bit_buf_tex[2][MAX_MB_BYTES];
2047     PutBitContext pb[2], pb2[2], tex_pb[2];
2048 //printf("%d->%d\n", s->resync_mb_y, s->end_mb_y);
2049
2050     ff_check_alignment();
2051
2052     for(i=0; i<2; i++){
2053         init_put_bits(&pb    [i], bit_buf    [i], MAX_MB_BYTES);
2054         init_put_bits(&pb2   [i], bit_buf2   [i], MAX_MB_BYTES);
2055         init_put_bits(&tex_pb[i], bit_buf_tex[i], MAX_MB_BYTES);
2056     }
2057
2058     s->last_bits= put_bits_count(&s->pb);
2059     s->mv_bits=0;
2060     s->misc_bits=0;
2061     s->i_tex_bits=0;
2062     s->p_tex_bits=0;
2063     s->i_count=0;
2064     s->f_count=0;
2065     s->b_count=0;
2066     s->skip_count=0;
2067
2068     for(i=0; i<3; i++){
2069         /* init last dc values */
2070         /* note: quant matrix value (8) is implied here */
2071         s->last_dc[i] = 128 << s->intra_dc_precision;
2072
2073         s->current_picture.error[i] = 0;
2074     }
2075     s->mb_skip_run = 0;
2076     memset(s->last_mv, 0, sizeof(s->last_mv));
2077
2078     s->last_mv_dir = 0;
2079
2080     switch(s->codec_id){
2081     case CODEC_ID_H263:
2082     case CODEC_ID_H263P:
2083     case CODEC_ID_FLV1:
2084         if (CONFIG_H263_ENCODER)
2085             s->gob_index = ff_h263_get_gob_height(s);
2086         break;
2087     case CODEC_ID_MPEG4:
2088         if(CONFIG_MPEG4_ENCODER && s->partitioned_frame)
2089             ff_mpeg4_init_partitions(s);
2090         break;
2091     }
2092
2093     s->resync_mb_x=0;
2094     s->resync_mb_y=0;
2095     s->first_slice_line = 1;
2096     s->ptr_lastgob = s->pb.buf;
2097     for(mb_y= s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
2098 //    printf("row %d at %X\n", s->mb_y, (int)s);
2099         s->mb_x=0;
2100         s->mb_y= mb_y;
2101
2102         ff_set_qscale(s, s->qscale);
2103         ff_init_block_index(s);
2104
2105         for(mb_x=0; mb_x < s->mb_width; mb_x++) {
2106             int xy= mb_y*s->mb_stride + mb_x; // removed const, H261 needs to adjust this
2107             int mb_type= s->mb_type[xy];
2108 //            int d;
2109             int dmin= INT_MAX;
2110             int dir;
2111
2112             if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < MAX_MB_BYTES){
2113                 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
2114                 return -1;
2115             }
2116             if(s->data_partitioning){
2117                 if(   s->pb2   .buf_end - s->pb2   .buf - (put_bits_count(&s->    pb2)>>3) < MAX_MB_BYTES
2118                    || s->tex_pb.buf_end - s->tex_pb.buf - (put_bits_count(&s->tex_pb )>>3) < MAX_MB_BYTES){
2119                     av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
2120                     return -1;
2121                 }
2122             }
2123
2124             s->mb_x = mb_x;
2125             s->mb_y = mb_y;  // moved into loop, can get changed by H.261
2126             ff_update_block_index(s);
2127
2128             if(CONFIG_H261_ENCODER && s->codec_id == CODEC_ID_H261){
2129                 ff_h261_reorder_mb_index(s);
2130                 xy= s->mb_y*s->mb_stride + s->mb_x;
2131                 mb_type= s->mb_type[xy];
2132             }
2133
2134             /* write gob / video packet header  */
2135             if(s->rtp_mode){
2136                 int current_packet_size, is_gob_start;
2137
2138                 current_packet_size= ((put_bits_count(&s->pb)+7)>>3) - (s->ptr_lastgob - s->pb.buf);
2139
2140                 is_gob_start= s->avctx->rtp_payload_size && current_packet_size >= s->avctx->rtp_payload_size && mb_y + mb_x>0;
2141
2142                 if(s->start_mb_y == mb_y && mb_y > 0 && mb_x==0) is_gob_start=1;
2143
2144                 switch(s->codec_id){
2145                 case CODEC_ID_H263:
2146                 case CODEC_ID_H263P:
2147                     if(!s->h263_slice_structured)
2148                         if(s->mb_x || s->mb_y%s->gob_index) is_gob_start=0;
2149                     break;
2150                 case CODEC_ID_MPEG2VIDEO:
2151                     if(s->mb_x==0 && s->mb_y!=0) is_gob_start=1;
2152                 case CODEC_ID_MPEG1VIDEO:
2153                     if(s->mb_skip_run) is_gob_start=0;
2154                     break;
2155                 }
2156
2157                 if(is_gob_start){
2158                     if(s->start_mb_y != mb_y || mb_x!=0){
2159                         write_slice_end(s);
2160
2161                         if(CONFIG_MPEG4_ENCODER && s->codec_id==CODEC_ID_MPEG4 && s->partitioned_frame){
2162                             ff_mpeg4_init_partitions(s);
2163                         }
2164                     }
2165
2166                     assert((put_bits_count(&s->pb)&7) == 0);
2167                     current_packet_size= put_bits_ptr(&s->pb) - s->ptr_lastgob;
2168
2169                     if(s->avctx->error_rate && s->resync_mb_x + s->resync_mb_y > 0){
2170                         int r= put_bits_count(&s->pb)/8 + s->picture_number + 16 + s->mb_x + s->mb_y;
2171                         int d= 100 / s->avctx->error_rate;
2172                         if(r % d == 0){
2173                             current_packet_size=0;
2174 #ifndef ALT_BITSTREAM_WRITER
2175                             s->pb.buf_ptr= s->ptr_lastgob;
2176 #endif
2177                             assert(put_bits_ptr(&s->pb) == s->ptr_lastgob);
2178                         }
2179                     }
2180
2181                     if (s->avctx->rtp_callback){
2182                         int number_mb = (mb_y - s->resync_mb_y)*s->mb_width + mb_x - s->resync_mb_x;
2183                         s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, current_packet_size, number_mb);
2184                     }
2185
2186                     switch(s->codec_id){
2187                     case CODEC_ID_MPEG4:
2188                         if (CONFIG_MPEG4_ENCODER) {
2189                             ff_mpeg4_encode_video_packet_header(s);
2190                             ff_mpeg4_clean_buffers(s);
2191                         }
2192                     break;
2193                     case CODEC_ID_MPEG1VIDEO:
2194                     case CODEC_ID_MPEG2VIDEO:
2195                         if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER) {
2196                             ff_mpeg1_encode_slice_header(s);
2197                             ff_mpeg1_clean_buffers(s);
2198                         }
2199                     break;
2200                     case CODEC_ID_H263:
2201                     case CODEC_ID_H263P:
2202                         if (CONFIG_H263_ENCODER)
2203                             h263_encode_gob_header(s, mb_y);
2204                     break;
2205                     }
2206
2207                     if(s->flags&CODEC_FLAG_PASS1){
2208                         int bits= put_bits_count(&s->pb);
2209                         s->misc_bits+= bits - s->last_bits;
2210                         s->last_bits= bits;
2211                     }
2212
2213                     s->ptr_lastgob += current_packet_size;
2214                     s->first_slice_line=1;
2215                     s->resync_mb_x=mb_x;
2216                     s->resync_mb_y=mb_y;
2217                 }
2218             }
2219
2220             if(  (s->resync_mb_x   == s->mb_x)
2221                && s->resync_mb_y+1 == s->mb_y){
2222                 s->first_slice_line=0;
2223             }
2224
2225             s->mb_skipped=0;
2226             s->dquant=0; //only for QP_RD
2227
2228             if(mb_type & (mb_type-1) || (s->flags & CODEC_FLAG_QP_RD)){ // more than 1 MB type possible or CODEC_FLAG_QP_RD
2229                 int next_block=0;
2230                 int pb_bits_count, pb2_bits_count, tex_pb_bits_count;
2231
2232                 copy_context_before_encode(&backup_s, s, -1);
2233                 backup_s.pb= s->pb;
2234                 best_s.data_partitioning= s->data_partitioning;
2235                 best_s.partitioned_frame= s->partitioned_frame;
2236                 if(s->data_partitioning){
2237                     backup_s.pb2= s->pb2;
2238                     backup_s.tex_pb= s->tex_pb;
2239                 }
2240
2241                 if(mb_type&CANDIDATE_MB_TYPE_INTER){
2242                     s->mv_dir = MV_DIR_FORWARD;
2243                     s->mv_type = MV_TYPE_16X16;
2244                     s->mb_intra= 0;
2245                     s->mv[0][0][0] = s->p_mv_table[xy][0];
2246                     s->mv[0][0][1] = s->p_mv_table[xy][1];
2247                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER, pb, pb2, tex_pb,
2248                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
2249                 }
2250                 if(mb_type&CANDIDATE_MB_TYPE_INTER_I){
2251                     s->mv_dir = MV_DIR_FORWARD;
2252                     s->mv_type = MV_TYPE_FIELD;
2253                     s->mb_intra= 0;
2254                     for(i=0; i<2; i++){
2255                         j= s->field_select[0][i] = s->p_field_select_table[i][xy];
2256                         s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
2257                         s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
2258                     }
2259                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER_I, pb, pb2, tex_pb,
2260                                  &dmin, &next_block, 0, 0);
2261                 }
2262                 if(mb_type&CANDIDATE_MB_TYPE_SKIPPED){
2263                     s->mv_dir = MV_DIR_FORWARD;
2264                     s->mv_type = MV_TYPE_16X16;
2265                     s->mb_intra= 0;
2266                     s->mv[0][0][0] = 0;
2267                     s->mv[0][0][1] = 0;
2268                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_SKIPPED, pb, pb2, tex_pb,
2269                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
2270                 }
2271                 if(mb_type&CANDIDATE_MB_TYPE_INTER4V){
2272                     s->mv_dir = MV_DIR_FORWARD;
2273                     s->mv_type = MV_TYPE_8X8;
2274                     s->mb_intra= 0;
2275                     for(i=0; i<4; i++){
2276                         s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
2277                         s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
2278                     }
2279                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER4V, pb, pb2, tex_pb,
2280                                  &dmin, &next_block, 0, 0);
2281                 }
2282                 if(mb_type&CANDIDATE_MB_TYPE_FORWARD){
2283                     s->mv_dir = MV_DIR_FORWARD;
2284                     s->mv_type = MV_TYPE_16X16;
2285                     s->mb_intra= 0;
2286                     s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
2287                     s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
2288                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD, pb, pb2, tex_pb,
2289                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
2290                 }
2291                 if(mb_type&CANDIDATE_MB_TYPE_BACKWARD){
2292                     s->mv_dir = MV_DIR_BACKWARD;
2293                     s->mv_type = MV_TYPE_16X16;
2294                     s->mb_intra= 0;
2295                     s->mv[1][0][0] = s->b_back_mv_table[xy][0];
2296                     s->mv[1][0][1] = s->b_back_mv_table[xy][1];
2297                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD, pb, pb2, tex_pb,
2298                                  &dmin, &next_block, s->mv[1][0][0], s->mv[1][0][1]);
2299                 }
2300                 if(mb_type&CANDIDATE_MB_TYPE_BIDIR){
2301                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2302                     s->mv_type = MV_TYPE_16X16;
2303                     s->mb_intra= 0;
2304                     s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
2305                     s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
2306                     s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
2307                     s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
2308                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR, pb, pb2, tex_pb,
2309                                  &dmin, &next_block, 0, 0);
2310                 }
2311                 if(mb_type&CANDIDATE_MB_TYPE_FORWARD_I){
2312                     s->mv_dir = MV_DIR_FORWARD;
2313                     s->mv_type = MV_TYPE_FIELD;
2314                     s->mb_intra= 0;
2315                     for(i=0; i<2; i++){
2316                         j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
2317                         s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
2318                         s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
2319                     }
2320                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD_I, pb, pb2, tex_pb,
2321                                  &dmin, &next_block, 0, 0);
2322                 }
2323                 if(mb_type&CANDIDATE_MB_TYPE_BACKWARD_I){
2324                     s->mv_dir = MV_DIR_BACKWARD;
2325                     s->mv_type = MV_TYPE_FIELD;
2326                     s->mb_intra= 0;
2327                     for(i=0; i<2; i++){
2328                         j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
2329                         s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
2330                         s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
2331                     }
2332                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD_I, pb, pb2, tex_pb,
2333                                  &dmin, &next_block, 0, 0);
2334                 }
2335                 if(mb_type&CANDIDATE_MB_TYPE_BIDIR_I){
2336                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2337                     s->mv_type = MV_TYPE_FIELD;
2338                     s->mb_intra= 0;
2339                     for(dir=0; dir<2; dir++){
2340                         for(i=0; i<2; i++){
2341                             j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
2342                             s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
2343                             s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
2344                         }
2345                     }
2346                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR_I, pb, pb2, tex_pb,
2347                                  &dmin, &next_block, 0, 0);
2348                 }
2349                 if(mb_type&CANDIDATE_MB_TYPE_INTRA){
2350                     s->mv_dir = 0;
2351                     s->mv_type = MV_TYPE_16X16;
2352                     s->mb_intra= 1;
2353                     s->mv[0][0][0] = 0;
2354                     s->mv[0][0][1] = 0;
2355                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTRA, pb, pb2, tex_pb,
2356                                  &dmin, &next_block, 0, 0);
2357                     if(s->h263_pred || s->h263_aic){
2358                         if(best_s.mb_intra)
2359                             s->mbintra_table[mb_x + mb_y*s->mb_stride]=1;
2360                         else
2361                             ff_clean_intra_table_entries(s); //old mode?
2362                     }
2363                 }
2364
2365                 if((s->flags & CODEC_FLAG_QP_RD) && dmin < INT_MAX){
2366                     if(best_s.mv_type==MV_TYPE_16X16){ //FIXME move 4mv after QPRD
2367                         const int last_qp= backup_s.qscale;
2368                         int qpi, qp, dc[6];
2369                         DCTELEM ac[6][16];
2370                         const int mvdir= (best_s.mv_dir&MV_DIR_BACKWARD) ? 1 : 0;
2371                         static const int dquant_tab[4]={-1,1,-2,2};
2372
2373                         assert(backup_s.dquant == 0);
2374
2375                         //FIXME intra
2376                         s->mv_dir= best_s.mv_dir;
2377                         s->mv_type = MV_TYPE_16X16;
2378                         s->mb_intra= best_s.mb_intra;
2379                         s->mv[0][0][0] = best_s.mv[0][0][0];
2380                         s->mv[0][0][1] = best_s.mv[0][0][1];
2381                         s->mv[1][0][0] = best_s.mv[1][0][0];
2382                         s->mv[1][0][1] = best_s.mv[1][0][1];
2383
2384                         qpi = s->pict_type == FF_B_TYPE ? 2 : 0;
2385                         for(; qpi<4; qpi++){
2386                             int dquant= dquant_tab[qpi];
2387                             qp= last_qp + dquant;
2388                             if(qp < s->avctx->qmin || qp > s->avctx->qmax)
2389                                 continue;
2390                             backup_s.dquant= dquant;
2391                             if(s->mb_intra && s->dc_val[0]){
2392                                 for(i=0; i<6; i++){
2393                                     dc[i]= s->dc_val[0][ s->block_index[i] ];
2394                                     memcpy(ac[i], s->ac_val[0][s->block_index[i]], sizeof(DCTELEM)*16);
2395                                 }
2396                             }
2397
2398                             encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
2399                                          &dmin, &next_block, s->mv[mvdir][0][0], s->mv[mvdir][0][1]);
2400                             if(best_s.qscale != qp){
2401                                 if(s->mb_intra && s->dc_val[0]){
2402                                     for(i=0; i<6; i++){
2403                                         s->dc_val[0][ s->block_index[i] ]= dc[i];
2404                                         memcpy(s->ac_val[0][s->block_index[i]], ac[i], sizeof(DCTELEM)*16);
2405                                     }
2406                                 }
2407                             }
2408                         }
2409                     }
2410                 }
2411                 if(CONFIG_MPEG4_ENCODER && mb_type&CANDIDATE_MB_TYPE_DIRECT){
2412                     int mx= s->b_direct_mv_table[xy][0];
2413                     int my= s->b_direct_mv_table[xy][1];
2414
2415                     backup_s.dquant = 0;
2416                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
2417                     s->mb_intra= 0;
2418                     ff_mpeg4_set_direct_mv(s, mx, my);
2419                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
2420                                  &dmin, &next_block, mx, my);
2421                 }
2422                 if(CONFIG_MPEG4_ENCODER && mb_type&CANDIDATE_MB_TYPE_DIRECT0){
2423                     backup_s.dquant = 0;
2424                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
2425                     s->mb_intra= 0;
2426                     ff_mpeg4_set_direct_mv(s, 0, 0);
2427                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
2428                                  &dmin, &next_block, 0, 0);
2429                 }
2430                 if(!best_s.mb_intra && s->flags2&CODEC_FLAG2_SKIP_RD){
2431                     int coded=0;
2432                     for(i=0; i<6; i++)
2433                         coded |= s->block_last_index[i];
2434                     if(coded){
2435                         int mx,my;
2436                         memcpy(s->mv, best_s.mv, sizeof(s->mv));
2437                         if(CONFIG_MPEG4_ENCODER && best_s.mv_dir & MV_DIRECT){
2438                             mx=my=0; //FIXME find the one we actually used
2439                             ff_mpeg4_set_direct_mv(s, mx, my);
2440                         }else if(best_s.mv_dir&MV_DIR_BACKWARD){
2441                             mx= s->mv[1][0][0];
2442                             my= s->mv[1][0][1];
2443                         }else{
2444                             mx= s->mv[0][0][0];
2445                             my= s->mv[0][0][1];
2446                         }
2447
2448                         s->mv_dir= best_s.mv_dir;
2449                         s->mv_type = best_s.mv_type;
2450                         s->mb_intra= 0;
2451 /*                        s->mv[0][0][0] = best_s.mv[0][0][0];
2452                         s->mv[0][0][1] = best_s.mv[0][0][1];
2453                         s->mv[1][0][0] = best_s.mv[1][0][0];
2454                         s->mv[1][0][1] = best_s.mv[1][0][1];*/
2455                         backup_s.dquant= 0;
2456                         s->skipdct=1;
2457                         encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
2458                                         &dmin, &next_block, mx, my);
2459                         s->skipdct=0;
2460                     }
2461                 }
2462
2463                 s->current_picture.qscale_table[xy]= best_s.qscale;
2464
2465                 copy_context_after_encode(s, &best_s, -1);
2466
2467                 pb_bits_count= put_bits_count(&s->pb);
2468                 flush_put_bits(&s->pb);
2469                 ff_copy_bits(&backup_s.pb, bit_buf[next_block^1], pb_bits_count);
2470                 s->pb= backup_s.pb;
2471
2472                 if(s->data_partitioning){
2473                     pb2_bits_count= put_bits_count(&s->pb2);
2474                     flush_put_bits(&s->pb2);
2475                     ff_copy_bits(&backup_s.pb2, bit_buf2[next_block^1], pb2_bits_count);
2476                     s->pb2= backup_s.pb2;
2477
2478                     tex_pb_bits_count= put_bits_count(&s->tex_pb);
2479                     flush_put_bits(&s->tex_pb);
2480                     ff_copy_bits(&backup_s.tex_pb, bit_buf_tex[next_block^1], tex_pb_bits_count);
2481                     s->tex_pb= backup_s.tex_pb;
2482                 }
2483                 s->last_bits= put_bits_count(&s->pb);
2484
2485                 if (CONFIG_H263_ENCODER &&
2486                     s->out_format == FMT_H263 && s->pict_type!=FF_B_TYPE)
2487                     ff_h263_update_motion_val(s);
2488
2489                 if(next_block==0){ //FIXME 16 vs linesize16
2490                     s->dsp.put_pixels_tab[0][0](s->dest[0], s->rd_scratchpad                     , s->linesize  ,16);
2491                     s->dsp.put_pixels_tab[1][0](s->dest[1], s->rd_scratchpad + 16*s->linesize    , s->uvlinesize, 8);
2492                     s->dsp.put_pixels_tab[1][0](s->dest[2], s->rd_scratchpad + 16*s->linesize + 8, s->uvlinesize, 8);
2493                 }
2494
2495                 if(s->avctx->mb_decision == FF_MB_DECISION_BITS)
2496                     MPV_decode_mb(s, s->block);
2497             } else {
2498                 int motion_x = 0, motion_y = 0;
2499                 s->mv_type=MV_TYPE_16X16;
2500                 // only one MB-Type possible
2501
2502                 switch(mb_type){
2503                 case CANDIDATE_MB_TYPE_INTRA:
2504                     s->mv_dir = 0;
2505                     s->mb_intra= 1;
2506                     motion_x= s->mv[0][0][0] = 0;
2507                     motion_y= s->mv[0][0][1] = 0;
2508                     break;
2509                 case CANDIDATE_MB_TYPE_INTER:
2510                     s->mv_dir = MV_DIR_FORWARD;
2511                     s->mb_intra= 0;
2512                     motion_x= s->mv[0][0][0] = s->p_mv_table[xy][0];
2513                     motion_y= s->mv[0][0][1] = s->p_mv_table[xy][1];
2514                     break;
2515                 case CANDIDATE_MB_TYPE_INTER_I:
2516                     s->mv_dir = MV_DIR_FORWARD;
2517                     s->mv_type = MV_TYPE_FIELD;
2518                     s->mb_intra= 0;
2519                     for(i=0; i<2; i++){
2520                         j= s->field_select[0][i] = s->p_field_select_table[i][xy];
2521                         s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
2522                         s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
2523                     }
2524                     break;
2525                 case CANDIDATE_MB_TYPE_INTER4V:
2526                     s->mv_dir = MV_DIR_FORWARD;
2527                     s->mv_type = MV_TYPE_8X8;
2528                     s->mb_intra= 0;
2529                     for(i=0; i<4; i++){
2530                         s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
2531                         s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
2532                     }
2533                     break;
2534                 case CANDIDATE_MB_TYPE_DIRECT:
2535                     if (CONFIG_MPEG4_ENCODER) {
2536                         s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD|MV_DIRECT;
2537                         s->mb_intra= 0;
2538                         motion_x=s->b_direct_mv_table[xy][0];
2539                         motion_y=s->b_direct_mv_table[xy][1];
2540                         ff_mpeg4_set_direct_mv(s, motion_x, motion_y);
2541                     }
2542                     break;
2543                 case CANDIDATE_MB_TYPE_DIRECT0:
2544                     if (CONFIG_MPEG4_ENCODER) {
2545                         s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD|MV_DIRECT;
2546                         s->mb_intra= 0;
2547                         ff_mpeg4_set_direct_mv(s, 0, 0);
2548                     }
2549                     break;
2550                 case CANDIDATE_MB_TYPE_BIDIR:
2551                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2552                     s->mb_intra= 0;
2553                     s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
2554                     s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
2555                     s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
2556                     s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
2557                     break;
2558                 case CANDIDATE_MB_TYPE_BACKWARD:
2559                     s->mv_dir = MV_DIR_BACKWARD;
2560                     s->mb_intra= 0;
2561                     motion_x= s->mv[1][0][0] = s->b_back_mv_table[xy][0];
2562                     motion_y= s->mv[1][0][1] = s->b_back_mv_table[xy][1];
2563                     break;
2564                 case CANDIDATE_MB_TYPE_FORWARD:
2565                     s->mv_dir = MV_DIR_FORWARD;
2566                     s->mb_intra= 0;
2567                     motion_x= s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
2568                     motion_y= s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
2569 //                    printf(" %d %d ", motion_x, motion_y);
2570                     break;
2571                 case CANDIDATE_MB_TYPE_FORWARD_I:
2572                     s->mv_dir = MV_DIR_FORWARD;
2573                     s->mv_type = MV_TYPE_FIELD;
2574                     s->mb_intra= 0;
2575                     for(i=0; i<2; i++){
2576                         j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
2577                         s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
2578                         s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
2579                     }
2580                     break;
2581                 case CANDIDATE_MB_TYPE_BACKWARD_I:
2582                     s->mv_dir = MV_DIR_BACKWARD;
2583                     s->mv_type = MV_TYPE_FIELD;
2584                     s->mb_intra= 0;
2585                     for(i=0; i<2; i++){
2586                         j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
2587                         s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
2588                         s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
2589                     }
2590                     break;
2591                 case CANDIDATE_MB_TYPE_BIDIR_I:
2592                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2593                     s->mv_type = MV_TYPE_FIELD;
2594                     s->mb_intra= 0;
2595                     for(dir=0; dir<2; dir++){
2596                         for(i=0; i<2; i++){
2597                             j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
2598                             s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
2599                             s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
2600                         }
2601                     }
2602                     break;
2603                 default:
2604                     av_log(s->avctx, AV_LOG_ERROR, "illegal MB type\n");
2605                 }
2606
2607                 encode_mb(s, motion_x, motion_y);
2608
2609                 // RAL: Update last macroblock type
2610                 s->last_mv_dir = s->mv_dir;
2611
2612                 if (CONFIG_H263_ENCODER &&
2613                     s->out_format == FMT_H263 && s->pict_type!=FF_B_TYPE)
2614                     ff_h263_update_motion_val(s);
2615
2616                 MPV_decode_mb(s, s->block);
2617             }
2618
2619             /* clean the MV table in IPS frames for direct mode in B frames */
2620             if(s->mb_intra /* && I,P,S_TYPE */){
2621                 s->p_mv_table[xy][0]=0;
2622                 s->p_mv_table[xy][1]=0;
2623             }
2624
2625             if(s->flags&CODEC_FLAG_PSNR){
2626                 int w= 16;
2627                 int h= 16;
2628
2629                 if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
2630                 if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
2631
2632                 s->current_picture.error[0] += sse(
2633                     s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16,
2634                     s->dest[0], w, h, s->linesize);
2635                 s->current_picture.error[1] += sse(
2636                     s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*chr_h,
2637                     s->dest[1], w>>1, h>>s->chroma_y_shift, s->uvlinesize);
2638                 s->current_picture.error[2] += sse(
2639                     s, s->new_picture.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*chr_h,
2640                     s->dest[2], w>>1, h>>s->chroma_y_shift, s->uvlinesize);
2641             }
2642             if(s->loop_filter){
2643                 if(CONFIG_H263_ENCODER && s->out_format == FMT_H263)
2644                     ff_h263_loop_filter(s);
2645             }
2646 //printf("MB %d %d bits\n", s->mb_x+s->mb_y*s->mb_stride, put_bits_count(&s->pb));
2647         }
2648     }
2649
2650     //not beautiful here but we must write it before flushing so it has to be here
2651     if (CONFIG_MSMPEG4_ENCODER && s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type == FF_I_TYPE)
2652         msmpeg4_encode_ext_header(s);
2653
2654     write_slice_end(s);
2655
2656     /* Send the last GOB if RTP */
2657     if (s->avctx->rtp_callback) {
2658         int number_mb = (mb_y - s->resync_mb_y)*s->mb_width - s->resync_mb_x;
2659         pdif = put_bits_ptr(&s->pb) - s->ptr_lastgob;
2660         /* Call the RTP callback to send the last GOB */
2661         emms_c();
2662         s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, pdif, number_mb);
2663     }
2664
2665     return 0;
2666 }
2667
2668 #define MERGE(field) dst->field += src->field; src->field=0
2669 static void merge_context_after_me(MpegEncContext *dst, MpegEncContext *src){
2670     MERGE(me.scene_change_score);
2671     MERGE(me.mc_mb_var_sum_temp);
2672     MERGE(me.mb_var_sum_temp);
2673 }
2674
2675 static void merge_context_after_encode(MpegEncContext *dst, MpegEncContext *src){
2676     int i;
2677
2678     MERGE(dct_count[0]); //note, the other dct vars are not part of the context
2679     MERGE(dct_count[1]);
2680     MERGE(mv_bits);
2681     MERGE(i_tex_bits);
2682     MERGE(p_tex_bits);
2683     MERGE(i_count);
2684     MERGE(f_count);
2685     MERGE(b_count);
2686     MERGE(skip_count);
2687     MERGE(misc_bits);
2688     MERGE(error_count);
2689     MERGE(padding_bug_score);
2690     MERGE(current_picture.error[0]);
2691     MERGE(current_picture.error[1]);
2692     MERGE(current_picture.error[2]);
2693
2694     if(dst->avctx->noise_reduction){
2695         for(i=0; i<64; i++){
2696             MERGE(dct_error_sum[0][i]);
2697             MERGE(dct_error_sum[1][i]);
2698         }
2699     }
2700
2701     assert(put_bits_count(&src->pb) % 8 ==0);
2702     assert(put_bits_count(&dst->pb) % 8 ==0);
2703     ff_copy_bits(&dst->pb, src->pb.buf, put_bits_count(&src->pb));
2704     flush_put_bits(&dst->pb);
2705 }
2706
2707 static int estimate_qp(MpegEncContext *s, int dry_run){
2708     if (s->next_lambda){
2709         s->current_picture_ptr->quality=
2710         s->current_picture.quality = s->next_lambda;
2711         if(!dry_run) s->next_lambda= 0;
2712     } else if (!s->fixed_qscale) {
2713         s->current_picture_ptr->quality=
2714         s->current_picture.quality = ff_rate_estimate_qscale(s, dry_run);
2715         if (s->current_picture.quality < 0)
2716             return -1;
2717     }
2718
2719     if(s->adaptive_quant){
2720         switch(s->codec_id){
2721         case CODEC_ID_MPEG4:
2722             if (CONFIG_MPEG4_ENCODER)
2723                 ff_clean_mpeg4_qscales(s);
2724             break;
2725         case CODEC_ID_H263:
2726         case CODEC_ID_H263P:
2727         case CODEC_ID_FLV1:
2728             if (CONFIG_H263_ENCODER)
2729                 ff_clean_h263_qscales(s);
2730             break;
2731         default:
2732             ff_init_qscale_tab(s);
2733         }
2734
2735         s->lambda= s->lambda_table[0];
2736         //FIXME broken
2737     }else
2738         s->lambda= s->current_picture.quality;
2739 //printf("%d %d\n", s->avctx->global_quality, s->current_picture.quality);
2740     update_qscale(s);
2741     return 0;
2742 }
2743
2744 /* must be called before writing the header */
2745 static void set_frame_distances(MpegEncContext * s){
2746     assert(s->current_picture_ptr->pts != AV_NOPTS_VALUE);
2747     s->time= s->current_picture_ptr->pts*s->avctx->time_base.num;
2748
2749     if(s->pict_type==FF_B_TYPE){
2750         s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
2751         assert(s->pb_time > 0 && s->pb_time < s->pp_time);
2752     }else{
2753         s->pp_time= s->time - s->last_non_b_time;
2754         s->last_non_b_time= s->time;
2755         assert(s->picture_number==0 || s->pp_time > 0);
2756     }
2757 }
2758
2759 static int encode_picture(MpegEncContext *s, int picture_number)
2760 {
2761     int i;
2762     int bits;
2763
2764     s->picture_number = picture_number;
2765
2766     /* Reset the average MB variance */
2767     s->me.mb_var_sum_temp    =
2768     s->me.mc_mb_var_sum_temp = 0;
2769
2770     /* we need to initialize some time vars before we can encode b-frames */
2771     // RAL: Condition added for MPEG1VIDEO
2772     if (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO || (s->h263_pred && !s->h263_msmpeg4))
2773         set_frame_distances(s);
2774     if(CONFIG_MPEG4_ENCODER && s->codec_id == CODEC_ID_MPEG4)
2775         ff_set_mpeg4_time(s);
2776
2777     s->me.scene_change_score=0;
2778
2779 //    s->lambda= s->current_picture_ptr->quality; //FIXME qscale / ... stuff for ME rate distortion
2780
2781     if(s->pict_type==FF_I_TYPE){
2782         if(s->msmpeg4_version >= 3) s->no_rounding=1;
2783         else                        s->no_rounding=0;
2784     }else if(s->pict_type!=FF_B_TYPE){
2785         if(s->flipflop_rounding || s->codec_id == CODEC_ID_H263P || s->codec_id == CODEC_ID_MPEG4)
2786             s->no_rounding ^= 1;
2787     }
2788
2789     if(s->flags & CODEC_FLAG_PASS2){
2790         if (estimate_qp(s,1) < 0)
2791             return -1;
2792         ff_get_2pass_fcode(s);
2793     }else if(!(s->flags & CODEC_FLAG_QSCALE)){
2794         if(s->pict_type==FF_B_TYPE)
2795             s->lambda= s->last_lambda_for[s->pict_type];
2796         else
2797             s->lambda= s->last_lambda_for[s->last_non_b_pict_type];
2798         update_qscale(s);
2799     }
2800
2801     s->mb_intra=0; //for the rate distortion & bit compare functions
2802     for(i=1; i<s->avctx->thread_count; i++){
2803         ff_update_duplicate_context(s->thread_context[i], s);
2804     }
2805
2806     if(ff_init_me(s)<0)
2807         return -1;
2808
2809     /* Estimate motion for every MB */
2810     if(s->pict_type != FF_I_TYPE){
2811         s->lambda = (s->lambda * s->avctx->me_penalty_compensation + 128)>>8;
2812         s->lambda2= (s->lambda2* (int64_t)s->avctx->me_penalty_compensation + 128)>>8;
2813         if(s->pict_type != FF_B_TYPE && s->avctx->me_threshold==0){
2814             if((s->avctx->pre_me && s->last_non_b_pict_type==FF_I_TYPE) || s->avctx->pre_me==2){
2815                 s->avctx->execute(s->avctx, pre_estimate_motion_thread, &s->thread_context[0], NULL, s->avctx->thread_count, sizeof(void*));
2816             }
2817         }
2818
2819         s->avctx->execute(s->avctx, estimate_motion_thread, &s->thread_context[0], NULL, s->avctx->thread_count, sizeof(void*));
2820     }else /* if(s->pict_type == FF_I_TYPE) */{
2821         /* I-Frame */
2822         for(i=0; i<s->mb_stride*s->mb_height; i++)
2823             s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
2824
2825         if(!s->fixed_qscale){
2826             /* finding spatial complexity for I-frame rate control */
2827             s->avctx->execute(s->avctx, mb_var_thread, &s->thread_context[0], NULL, s->avctx->thread_count, sizeof(void*));
2828         }
2829     }
2830     for(i=1; i<s->avctx->thread_count; i++){
2831         merge_context_after_me(s, s->thread_context[i]);
2832     }
2833     s->current_picture.mc_mb_var_sum= s->current_picture_ptr->mc_mb_var_sum= s->me.mc_mb_var_sum_temp;
2834     s->current_picture.   mb_var_sum= s->current_picture_ptr->   mb_var_sum= s->me.   mb_var_sum_temp;
2835     emms_c();
2836
2837     if(s->me.scene_change_score > s->avctx->scenechange_threshold && s->pict_type == FF_P_TYPE){
2838         s->pict_type= FF_I_TYPE;
2839         for(i=0; i<s->mb_stride*s->mb_height; i++)
2840             s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
2841 //printf("Scene change detected, encoding as I Frame %d %d\n", s->current_picture.mb_var_sum, s->current_picture.mc_mb_var_sum);
2842     }
2843
2844     if(!s->umvplus){
2845         if(s->pict_type==FF_P_TYPE || s->pict_type==FF_S_TYPE) {
2846             s->f_code= ff_get_best_fcode(s, s->p_mv_table, CANDIDATE_MB_TYPE_INTER);
2847
2848             if(s->flags & CODEC_FLAG_INTERLACED_ME){
2849                 int a,b;
2850                 a= ff_get_best_fcode(s, s->p_field_mv_table[0][0], CANDIDATE_MB_TYPE_INTER_I); //FIXME field_select
2851                 b= ff_get_best_fcode(s, s->p_field_mv_table[1][1], CANDIDATE_MB_TYPE_INTER_I);
2852                 s->f_code= FFMAX3(s->f_code, a, b);
2853             }
2854
2855             ff_fix_long_p_mvs(s);
2856             ff_fix_long_mvs(s, NULL, 0, s->p_mv_table, s->f_code, CANDIDATE_MB_TYPE_INTER, 0);
2857             if(s->flags & CODEC_FLAG_INTERLACED_ME){
2858                 int j;
2859                 for(i=0; i<2; i++){
2860                     for(j=0; j<2; j++)
2861                         ff_fix_long_mvs(s, s->p_field_select_table[i], j,
2862                                         s->p_field_mv_table[i][j], s->f_code, CANDIDATE_MB_TYPE_INTER_I, 0);
2863                 }
2864             }
2865         }
2866
2867         if(s->pict_type==FF_B_TYPE){
2868             int a, b;
2869
2870             a = ff_get_best_fcode(s, s->b_forw_mv_table, CANDIDATE_MB_TYPE_FORWARD);
2871             b = ff_get_best_fcode(s, s->b_bidir_forw_mv_table, CANDIDATE_MB_TYPE_BIDIR);
2872             s->f_code = FFMAX(a, b);
2873
2874             a = ff_get_best_fcode(s, s->b_back_mv_table, CANDIDATE_MB_TYPE_BACKWARD);
2875             b = ff_get_best_fcode(s, s->b_bidir_back_mv_table, CANDIDATE_MB_TYPE_BIDIR);
2876             s->b_code = FFMAX(a, b);
2877
2878             ff_fix_long_mvs(s, NULL, 0, s->b_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_FORWARD, 1);
2879             ff_fix_long_mvs(s, NULL, 0, s->b_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BACKWARD, 1);
2880             ff_fix_long_mvs(s, NULL, 0, s->b_bidir_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_BIDIR, 1);
2881             ff_fix_long_mvs(s, NULL, 0, s->b_bidir_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BIDIR, 1);
2882             if(s->flags & CODEC_FLAG_INTERLACED_ME){
2883                 int dir, j;
2884                 for(dir=0; dir<2; dir++){
2885                     for(i=0; i<2; i++){
2886                         for(j=0; j<2; j++){
2887                             int type= dir ? (CANDIDATE_MB_TYPE_BACKWARD_I|CANDIDATE_MB_TYPE_BIDIR_I)
2888                                           : (CANDIDATE_MB_TYPE_FORWARD_I |CANDIDATE_MB_TYPE_BIDIR_I);
2889                             ff_fix_long_mvs(s, s->b_field_select_table[dir][i], j,
2890                                             s->b_field_mv_table[dir][i][j], dir ? s->b_code : s->f_code, type, 1);
2891                         }
2892                     }
2893                 }
2894             }
2895         }
2896     }
2897
2898     if (estimate_qp(s, 0) < 0)
2899         return -1;
2900
2901     if(s->qscale < 3 && s->max_qcoeff<=128 && s->pict_type==FF_I_TYPE && !(s->flags & CODEC_FLAG_QSCALE))
2902         s->qscale= 3; //reduce clipping problems
2903
2904     if (s->out_format == FMT_MJPEG) {
2905         /* for mjpeg, we do include qscale in the matrix */
2906         for(i=1;i<64;i++){
2907             int j= s->dsp.idct_permutation[i];
2908
2909             s->intra_matrix[j] = av_clip_uint8((ff_mpeg1_default_intra_matrix[i] * s->qscale) >> 3);
2910         }
2911         s->y_dc_scale_table=
2912         s->c_dc_scale_table= ff_mpeg2_dc_scale_table[s->intra_dc_precision];
2913         s->intra_matrix[0] = ff_mpeg2_dc_scale_table[s->intra_dc_precision][8];
2914         ff_convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
2915                        s->intra_matrix, s->intra_quant_bias, 8, 8, 1);
2916         s->qscale= 8;
2917     }
2918
2919     //FIXME var duplication
2920     s->current_picture_ptr->key_frame=
2921     s->current_picture.key_frame= s->pict_type == FF_I_TYPE; //FIXME pic_ptr
2922     s->current_picture_ptr->pict_type=
2923     s->current_picture.pict_type= s->pict_type;
2924
2925     if(s->current_picture.key_frame)
2926         s->picture_in_gop_number=0;
2927
2928     s->last_bits= put_bits_count(&s->pb);
2929     switch(s->out_format) {
2930     case FMT_MJPEG:
2931         if (CONFIG_MJPEG_ENCODER)
2932             ff_mjpeg_encode_picture_header(s);
2933         break;
2934     case FMT_H261:
2935         if (CONFIG_H261_ENCODER)
2936             ff_h261_encode_picture_header(s, picture_number);
2937         break;
2938     case FMT_H263:
2939         if (CONFIG_WMV2_ENCODER && s->codec_id == CODEC_ID_WMV2)
2940             ff_wmv2_encode_picture_header(s, picture_number);
2941         else if (CONFIG_MSMPEG4_ENCODER && s->h263_msmpeg4)
2942             msmpeg4_encode_picture_header(s, picture_number);
2943         else if (CONFIG_MPEG4_ENCODER && s->h263_pred)
2944             mpeg4_encode_picture_header(s, picture_number);
2945         else if (CONFIG_RV10_ENCODER && s->codec_id == CODEC_ID_RV10)
2946             rv10_encode_picture_header(s, picture_number);
2947         else if (CONFIG_RV20_ENCODER && s->codec_id == CODEC_ID_RV20)
2948             rv20_encode_picture_header(s, picture_number);
2949         else if (CONFIG_FLV_ENCODER && s->codec_id == CODEC_ID_FLV1)
2950             ff_flv_encode_picture_header(s, picture_number);
2951         else if (CONFIG_H263_ENCODER)
2952             h263_encode_picture_header(s, picture_number);
2953         break;
2954     case FMT_MPEG1:
2955         if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
2956             mpeg1_encode_picture_header(s, picture_number);
2957         break;
2958     case FMT_H264:
2959         break;
2960     default:
2961         assert(0);
2962     }
2963     bits= put_bits_count(&s->pb);
2964     s->header_bits= bits - s->last_bits;
2965
2966     for(i=1; i<s->avctx->thread_count; i++){
2967         update_duplicate_context_after_me(s->thread_context[i], s);
2968     }
2969     s->avctx->execute(s->avctx, encode_thread, &s->thread_context[0], NULL, s->avctx->thread_count, sizeof(void*));
2970     for(i=1; i<s->avctx->thread_count; i++){
2971         merge_context_after_encode(s, s->thread_context[i]);
2972     }
2973     emms_c();
2974     return 0;
2975 }
2976
2977 void  denoise_dct_c(MpegEncContext *s, DCTELEM *block){
2978     const int intra= s->mb_intra;
2979     int i;
2980
2981     s->dct_count[intra]++;
2982
2983     for(i=0; i<64; i++){
2984         int level= block[i];
2985
2986         if(level){
2987             if(level>0){
2988                 s->dct_error_sum[intra][i] += level;
2989                 level -= s->dct_offset[intra][i];
2990                 if(level<0) level=0;
2991             }else{
2992                 s->dct_error_sum[intra][i] -= level;
2993                 level += s->dct_offset[intra][i];
2994                 if(level>0) level=0;
2995             }
2996             block[i]= level;
2997         }
2998     }
2999 }
3000
3001 int dct_quantize_trellis_c(MpegEncContext *s,
3002                         DCTELEM *block, int n,
3003                         int qscale, int *overflow){
3004     const int *qmat;
3005     const uint8_t *scantable= s->intra_scantable.scantable;
3006     const uint8_t *perm_scantable= s->intra_scantable.permutated;
3007     int max=0;
3008     unsigned int threshold1, threshold2;
3009     int bias=0;
3010     int run_tab[65];
3011     int level_tab[65];
3012     int score_tab[65];
3013     int survivor[65];
3014     int survivor_count;
3015     int last_run=0;
3016     int last_level=0;
3017     int last_score= 0;
3018     int last_i;
3019     int coeff[2][64];
3020     int coeff_count[64];
3021     int qmul, qadd, start_i, last_non_zero, i, dc;
3022     const int esc_length= s->ac_esc_length;
3023     uint8_t * length;
3024     uint8_t * last_length;
3025     const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
3026
3027     s->dsp.fdct (block);
3028
3029     if(s->dct_error_sum)
3030         s->denoise_dct(s, block);
3031     qmul= qscale*16;
3032     qadd= ((qscale-1)|1)*8;
3033
3034     if (s->mb_intra) {
3035         int q;
3036         if (!s->h263_aic) {
3037             if (n < 4)
3038                 q = s->y_dc_scale;
3039             else
3040                 q = s->c_dc_scale;
3041             q = q << 3;
3042         } else{
3043             /* For AIC we skip quant/dequant of INTRADC */
3044             q = 1 << 3;
3045             qadd=0;
3046         }
3047
3048         /* note: block[0] is assumed to be positive */
3049         block[0] = (block[0] + (q >> 1)) / q;
3050         start_i = 1;
3051         last_non_zero = 0;
3052         qmat = s->q_intra_matrix[qscale];
3053         if(s->mpeg_quant || s->out_format == FMT_MPEG1)
3054             bias= 1<<(QMAT_SHIFT-1);
3055         length     = s->intra_ac_vlc_length;
3056         last_length= s->intra_ac_vlc_last_length;
3057     } else {
3058         start_i = 0;
3059         last_non_zero = -1;
3060         qmat = s->q_inter_matrix[qscale];
3061         length     = s->inter_ac_vlc_length;
3062         last_length= s->inter_ac_vlc_last_length;
3063     }
3064     last_i= start_i;
3065
3066     threshold1= (1<<QMAT_SHIFT) - bias - 1;
3067     threshold2= (threshold1<<1);
3068
3069     for(i=63; i>=start_i; i--) {
3070         const int j = scantable[i];
3071         int level = block[j] * qmat[j];
3072
3073         if(((unsigned)(level+threshold1))>threshold2){
3074             last_non_zero = i;
3075             break;
3076         }
3077     }
3078
3079     for(i=start_i; i<=last_non_zero; i++) {
3080         const int j = scantable[i];
3081         int level = block[j] * qmat[j];
3082
3083 //        if(   bias+level >= (1<<(QMAT_SHIFT - 3))
3084 //           || bias-level >= (1<<(QMAT_SHIFT - 3))){
3085         if(((unsigned)(level+threshold1))>threshold2){
3086             if(level>0){
3087                 level= (bias + level)>>QMAT_SHIFT;
3088                 coeff[0][i]= level;
3089                 coeff[1][i]= level-1;
3090 //                coeff[2][k]= level-2;
3091             }else{
3092                 level= (bias - level)>>QMAT_SHIFT;
3093                 coeff[0][i]= -level;
3094                 coeff[1][i]= -level+1;
3095 //                coeff[2][k]= -level+2;
3096             }
3097             coeff_count[i]= FFMIN(level, 2);
3098             assert(coeff_count[i]);
3099             max |=level;
3100         }else{
3101             coeff[0][i]= (level>>31)|1;
3102             coeff_count[i]= 1;
3103         }
3104     }
3105
3106     *overflow= s->max_qcoeff < max; //overflow might have happened
3107
3108     if(last_non_zero < start_i){
3109         memset(block + start_i, 0, (64-start_i)*sizeof(DCTELEM));
3110         return last_non_zero;
3111     }
3112
3113     score_tab[start_i]= 0;
3114     survivor[0]= start_i;
3115     survivor_count= 1;
3116
3117     for(i=start_i; i<=last_non_zero; i++){
3118         int level_index, j, zero_distortion;
3119         int dct_coeff= FFABS(block[ scantable[i] ]);
3120         int best_score=256*256*256*120;
3121
3122         if (   s->dsp.fdct == fdct_ifast
3123 #ifndef FAAN_POSTSCALE
3124             || s->dsp.fdct == ff_faandct
3125 #endif
3126            )
3127             dct_coeff= (dct_coeff*ff_inv_aanscales[ scantable[i] ]) >> 12;
3128         zero_distortion= dct_coeff*dct_coeff;
3129
3130         for(level_index=0; level_index < coeff_count[i]; level_index++){
3131             int distortion;
3132             int level= coeff[level_index][i];
3133             const int alevel= FFABS(level);
3134             int unquant_coeff;
3135
3136             assert(level);
3137
3138             if(s->out_format == FMT_H263){
3139                 unquant_coeff= alevel*qmul + qadd;
3140             }else{ //MPEG1
3141                 j= s->dsp.idct_permutation[ scantable[i] ]; //FIXME optimize
3142                 if(s->mb_intra){
3143                         unquant_coeff = (int)(  alevel  * qscale * s->intra_matrix[j]) >> 3;
3144                         unquant_coeff =   (unquant_coeff - 1) | 1;
3145                 }else{
3146                         unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[j])) >> 4;
3147                         unquant_coeff =   (unquant_coeff - 1) | 1;
3148                 }
3149                 unquant_coeff<<= 3;
3150             }
3151
3152             distortion= (unquant_coeff - dct_coeff) * (unquant_coeff - dct_coeff) - zero_distortion;
3153             level+=64;
3154             if((level&(~127)) == 0){
3155                 for(j=survivor_count-1; j>=0; j--){
3156                     int run= i - survivor[j];
3157                     int score= distortion + length[UNI_AC_ENC_INDEX(run, level)]*lambda;
3158                     score += score_tab[i-run];
3159
3160                     if(score < best_score){
3161                         best_score= score;
3162                         run_tab[i+1]= run;
3163                         level_tab[i+1]= level-64;
3164                     }
3165                 }
3166
3167                 if(s->out_format == FMT_H263){
3168                     for(j=survivor_count-1; j>=0; j--){
3169                         int run= i - survivor[j];
3170                         int score= distortion + last_length[UNI_AC_ENC_INDEX(run, level)]*lambda;
3171                         score += score_tab[i-run];
3172                         if(score < last_score){
3173                             last_score= score;
3174                             last_run= run;
3175                             last_level= level-64;
3176                             last_i= i+1;
3177                         }
3178                     }
3179                 }
3180             }else{
3181                 distortion += esc_length*lambda;
3182                 for(j=survivor_count-1; j>=0; j--){
3183                     int run= i - survivor[j];
3184                     int score= distortion + score_tab[i-run];
3185
3186                     if(score < best_score){
3187                         best_score= score;
3188                         run_tab[i+1]= run;
3189                         level_tab[i+1]= level-64;
3190                     }
3191                 }
3192
3193                 if(s->out_format == FMT_H263){
3194                   for(j=survivor_count-1; j>=0; j--){
3195                         int run= i - survivor[j];
3196                         int score= distortion + score_tab[i-run];
3197                         if(score < last_score){
3198                             last_score= score;
3199                             last_run= run;
3200                             last_level= level-64;
3201                             last_i= i+1;
3202                         }
3203                     }
3204                 }
3205             }
3206         }
3207
3208         score_tab[i+1]= best_score;
3209
3210         //Note: there is a vlc code in mpeg4 which is 1 bit shorter then another one with a shorter run and the same level
3211         if(last_non_zero <= 27){
3212             for(; survivor_count; survivor_count--){
3213                 if(score_tab[ survivor[survivor_count-1] ] <= best_score)
3214                     break;
3215             }
3216         }else{
3217             for(; survivor_count; survivor_count--){
3218                 if(score_tab[ survivor[survivor_count-1] ] <= best_score + lambda)
3219                     break;
3220             }
3221         }
3222
3223         survivor[ survivor_count++ ]= i+1;
3224     }
3225
3226     if(s->out_format != FMT_H263){
3227         last_score= 256*256*256*120;
3228         for(i= survivor[0]; i<=last_non_zero + 1; i++){
3229             int score= score_tab[i];
3230             if(i) score += lambda*2; //FIXME exacter?
3231
3232             if(score < last_score){
3233                 last_score= score;
3234                 last_i= i;
3235                 last_level= level_tab[i];
3236                 last_run= run_tab[i];
3237             }
3238         }
3239     }
3240
3241     s->coded_score[n] = last_score;
3242
3243     dc= FFABS(block[0]);
3244     last_non_zero= last_i - 1;
3245     memset(block + start_i, 0, (64-start_i)*sizeof(DCTELEM));
3246
3247     if(last_non_zero < start_i)
3248         return last_non_zero;
3249
3250     if(last_non_zero == 0 && start_i == 0){
3251         int best_level= 0;
3252         int best_score= dc * dc;
3253
3254         for(i=0; i<coeff_count[0]; i++){
3255             int level= coeff[i][0];
3256             int alevel= FFABS(level);
3257             int unquant_coeff, score, distortion;
3258
3259             if(s->out_format == FMT_H263){
3260                     unquant_coeff= (alevel*qmul + qadd)>>3;
3261             }else{ //MPEG1
3262                     unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[0])) >> 4;
3263                     unquant_coeff =   (unquant_coeff - 1) | 1;
3264             }
3265             unquant_coeff = (unquant_coeff + 4) >> 3;
3266             unquant_coeff<<= 3 + 3;
3267
3268             distortion= (unquant_coeff - dc) * (unquant_coeff - dc);
3269             level+=64;
3270             if((level&(~127)) == 0) score= distortion + last_length[UNI_AC_ENC_INDEX(0, level)]*lambda;
3271             else                    score= distortion + esc_length*lambda;
3272
3273             if(score < best_score){
3274                 best_score= score;
3275                 best_level= level - 64;
3276             }
3277         }
3278         block[0]= best_level;
3279         s->coded_score[n] = best_score - dc*dc;
3280         if(best_level == 0) return -1;
3281         else                return last_non_zero;
3282     }
3283
3284     i= last_i;
3285     assert(last_level);
3286
3287     block[ perm_scantable[last_non_zero] ]= last_level;
3288     i -= last_run + 1;
3289
3290     for(; i>start_i; i -= run_tab[i] + 1){
3291         block[ perm_scantable[i-1] ]= level_tab[i];
3292     }
3293
3294     return last_non_zero;
3295 }
3296
3297 //#define REFINE_STATS 1
3298 static int16_t basis[64][64];
3299
3300 static void build_basis(uint8_t *perm){
3301     int i, j, x, y;
3302     emms_c();
3303     for(i=0; i<8; i++){
3304         for(j=0; j<8; j++){
3305             for(y=0; y<8; y++){
3306                 for(x=0; x<8; x++){
3307                     double s= 0.25*(1<<BASIS_SHIFT);
3308                     int index= 8*i + j;
3309                     int perm_index= perm[index];
3310                     if(i==0) s*= sqrt(0.5);
3311                     if(j==0) s*= sqrt(0.5);
3312                     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)));
3313                 }
3314             }
3315         }
3316     }
3317 }
3318
3319 static int dct_quantize_refine(MpegEncContext *s, //FIXME breaks denoise?
3320                         DCTELEM *block, int16_t *weight, DCTELEM *orig,
3321                         int n, int qscale){
3322     int16_t rem[64];
3323     LOCAL_ALIGNED_16(DCTELEM, d1, [64]);
3324     const uint8_t *scantable= s->intra_scantable.scantable;
3325     const uint8_t *perm_scantable= s->intra_scantable.permutated;
3326 //    unsigned int threshold1, threshold2;
3327 //    int bias=0;
3328     int run_tab[65];
3329     int prev_run=0;
3330     int prev_level=0;
3331     int qmul, qadd, start_i, last_non_zero, i, dc;
3332     uint8_t * length;
3333     uint8_t * last_length;
3334     int lambda;
3335     int rle_index, run, q = 1, sum; //q is only used when s->mb_intra is true
3336 #ifdef REFINE_STATS
3337 static int count=0;
3338 static int after_last=0;
3339 static int to_zero=0;
3340 static int from_zero=0;
3341 static int raise=0;
3342 static int lower=0;
3343 static int messed_sign=0;
3344 #endif
3345
3346     if(basis[0][0] == 0)
3347         build_basis(s->dsp.idct_permutation);
3348
3349     qmul= qscale*2;
3350     qadd= (qscale-1)|1;
3351     if (s->mb_intra) {
3352         if (!s->h263_aic) {
3353             if (n < 4)
3354                 q = s->y_dc_scale;
3355             else
3356                 q = s->c_dc_scale;
3357         } else{
3358             /* For AIC we skip quant/dequant of INTRADC */
3359             q = 1;
3360             qadd=0;
3361         }
3362         q <<= RECON_SHIFT-3;
3363         /* note: block[0] is assumed to be positive */
3364         dc= block[0]*q;
3365 //        block[0] = (block[0] + (q >> 1)) / q;
3366         start_i = 1;
3367 //        if(s->mpeg_quant || s->out_format == FMT_MPEG1)
3368 //            bias= 1<<(QMAT_SHIFT-1);
3369         length     = s->intra_ac_vlc_length;
3370         last_length= s->intra_ac_vlc_last_length;
3371     } else {
3372         dc= 0;
3373         start_i = 0;
3374         length     = s->inter_ac_vlc_length;
3375         last_length= s->inter_ac_vlc_last_length;
3376     }
3377     last_non_zero = s->block_last_index[n];
3378
3379 #ifdef REFINE_STATS
3380 {START_TIMER
3381 #endif
3382     dc += (1<<(RECON_SHIFT-1));
3383     for(i=0; i<64; i++){
3384         rem[i]= dc - (orig[i]<<RECON_SHIFT); //FIXME  use orig dirrectly instead of copying to rem[]
3385     }
3386 #ifdef REFINE_STATS
3387 STOP_TIMER("memset rem[]")}
3388 #endif
3389     sum=0;
3390     for(i=0; i<64; i++){
3391         int one= 36;
3392         int qns=4;
3393         int w;
3394
3395         w= FFABS(weight[i]) + qns*one;
3396         w= 15 + (48*qns*one + w/2)/w; // 16 .. 63
3397
3398         weight[i] = w;
3399 //        w=weight[i] = (63*qns + (w/2)) / w;
3400
3401         assert(w>0);
3402         assert(w<(1<<6));
3403         sum += w*w;
3404     }
3405     lambda= sum*(uint64_t)s->lambda2 >> (FF_LAMBDA_SHIFT - 6 + 6 + 6 + 6);
3406 #ifdef REFINE_STATS
3407 {START_TIMER
3408 #endif
3409     run=0;
3410     rle_index=0;
3411     for(i=start_i; i<=last_non_zero; i++){
3412         int j= perm_scantable[i];
3413         const int level= block[j];
3414         int coeff;
3415
3416         if(level){
3417             if(level<0) coeff= qmul*level - qadd;
3418             else        coeff= qmul*level + qadd;
3419             run_tab[rle_index++]=run;
3420             run=0;
3421
3422             s->dsp.add_8x8basis(rem, basis[j], coeff);
3423         }else{
3424             run++;
3425         }
3426     }
3427 #ifdef REFINE_STATS
3428 if(last_non_zero>0){
3429 STOP_TIMER("init rem[]")
3430 }
3431 }
3432
3433 {START_TIMER
3434 #endif
3435     for(;;){
3436         int best_score=s->dsp.try_8x8basis(rem, weight, basis[0], 0);
3437         int best_coeff=0;
3438         int best_change=0;
3439         int run2, best_unquant_change=0, analyze_gradient;
3440 #ifdef REFINE_STATS
3441 {START_TIMER
3442 #endif
3443         analyze_gradient = last_non_zero > 2 || s->avctx->quantizer_noise_shaping >= 3;
3444
3445         if(analyze_gradient){
3446 #ifdef REFINE_STATS
3447 {START_TIMER
3448 #endif
3449             for(i=0; i<64; i++){
3450                 int w= weight[i];
3451
3452                 d1[i] = (rem[i]*w*w + (1<<(RECON_SHIFT+12-1)))>>(RECON_SHIFT+12);
3453             }
3454 #ifdef REFINE_STATS
3455 STOP_TIMER("rem*w*w")}
3456 {START_TIMER
3457 #endif
3458             s->dsp.fdct(d1);
3459 #ifdef REFINE_STATS
3460 STOP_TIMER("dct")}
3461 #endif
3462         }
3463
3464         if(start_i){
3465             const int level= block[0];
3466             int change, old_coeff;
3467
3468             assert(s->mb_intra);
3469
3470             old_coeff= q*level;
3471
3472             for(change=-1; change<=1; change+=2){
3473                 int new_level= level + change;
3474                 int score, new_coeff;
3475
3476                 new_coeff= q*new_level;
3477                 if(new_coeff >= 2048 || new_coeff < 0)
3478                     continue;
3479
3480                 score= s->dsp.try_8x8basis(rem, weight, basis[0], new_coeff - old_coeff);
3481                 if(score<best_score){
3482                     best_score= score;
3483                     best_coeff= 0;
3484                     best_change= change;
3485                     best_unquant_change= new_coeff - old_coeff;
3486                 }
3487             }
3488         }
3489
3490         run=0;
3491         rle_index=0;
3492         run2= run_tab[rle_index++];
3493         prev_level=0;
3494         prev_run=0;
3495
3496         for(i=start_i; i<64; i++){
3497             int j= perm_scantable[i];
3498             const int level= block[j];
3499             int change, old_coeff;
3500
3501             if(s->avctx->quantizer_noise_shaping < 3 && i > last_non_zero + 1)
3502                 break;
3503
3504             if(level){
3505                 if(level<0) old_coeff= qmul*level - qadd;
3506                 else        old_coeff= qmul*level + qadd;
3507                 run2= run_tab[rle_index++]; //FIXME ! maybe after last
3508             }else{
3509                 old_coeff=0;
3510                 run2--;
3511                 assert(run2>=0 || i >= last_non_zero );
3512             }
3513
3514             for(change=-1; change<=1; change+=2){
3515                 int new_level= level + change;
3516                 int score, new_coeff, unquant_change;
3517
3518                 score=0;
3519                 if(s->avctx->quantizer_noise_shaping < 2 && FFABS(new_level) > FFABS(level))
3520                    continue;
3521
3522                 if(new_level){
3523                     if(new_level<0) new_coeff= qmul*new_level - qadd;
3524                     else            new_coeff= qmul*new_level + qadd;
3525                     if(new_coeff >= 2048 || new_coeff <= -2048)
3526                         continue;
3527                     //FIXME check for overflow
3528
3529                     if(level){
3530                         if(level < 63 && level > -63){
3531                             if(i < last_non_zero)
3532                                 score +=   length[UNI_AC_ENC_INDEX(run, new_level+64)]
3533                                          - length[UNI_AC_ENC_INDEX(run, level+64)];
3534                             else
3535                                 score +=   last_length[UNI_AC_ENC_INDEX(run, new_level+64)]
3536                                          - last_length[UNI_AC_ENC_INDEX(run, level+64)];
3537                         }
3538                     }else{
3539                         assert(FFABS(new_level)==1);
3540
3541                         if(analyze_gradient){
3542                             int g= d1[ scantable[i] ];
3543                             if(g && (g^new_level) >= 0)
3544                                 continue;
3545                         }
3546
3547                         if(i < last_non_zero){
3548                             int next_i= i + run2 + 1;
3549                             int next_level= block[ perm_scantable[next_i] ] + 64;
3550
3551                             if(next_level&(~127))
3552                                 next_level= 0;
3553
3554                             if(next_i < last_non_zero)
3555                                 score +=   length[UNI_AC_ENC_INDEX(run, 65)]
3556                                          + length[UNI_AC_ENC_INDEX(run2, next_level)]
3557                                          - length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
3558                             else
3559                                 score +=  length[UNI_AC_ENC_INDEX(run, 65)]
3560                                         + last_length[UNI_AC_ENC_INDEX(run2, next_level)]
3561                                         - last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
3562                         }else{
3563                             score += last_length[UNI_AC_ENC_INDEX(run, 65)];
3564                             if(prev_level){
3565                                 score +=  length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
3566                                         - last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
3567                             }
3568                         }
3569                     }
3570                 }else{
3571                     new_coeff=0;
3572                     assert(FFABS(level)==1);
3573
3574                     if(i < last_non_zero){
3575                         int next_i= i + run2 + 1;
3576                         int next_level= block[ perm_scantable[next_i] ] + 64;
3577
3578                         if(next_level&(~127))
3579                             next_level= 0;
3580
3581                         if(next_i < last_non_zero)
3582                             score +=   length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
3583                                      - length[UNI_AC_ENC_INDEX(run2, next_level)]
3584                                      - length[UNI_AC_ENC_INDEX(run, 65)];
3585                         else
3586                             score +=   last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
3587                                      - last_length[UNI_AC_ENC_INDEX(run2, next_level)]
3588                                      - length[UNI_AC_ENC_INDEX(run, 65)];
3589                     }else{
3590                         score += -last_length[UNI_AC_ENC_INDEX(run, 65)];
3591                         if(prev_level){
3592                             score +=  last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
3593                                     - length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
3594                         }
3595                     }
3596                 }
3597
3598                 score *= lambda;
3599
3600                 unquant_change= new_coeff - old_coeff;
3601                 assert((score < 100*lambda && score > -100*lambda) || lambda==0);
3602
3603                 score+= s->dsp.try_8x8basis(rem, weight, basis[j], unquant_change);
3604                 if(score<best_score){
3605                     best_score= score;
3606                     best_coeff= i;
3607                     best_change= change;
3608                     best_unquant_change= unquant_change;
3609                 }
3610             }
3611             if(level){
3612                 prev_level= level + 64;
3613                 if(prev_level&(~127))
3614                     prev_level= 0;
3615                 prev_run= run;
3616                 run=0;
3617             }else{
3618                 run++;
3619             }
3620         }
3621 #ifdef REFINE_STATS
3622 STOP_TIMER("iterative step")}
3623 #endif
3624
3625         if(best_change){
3626             int j= perm_scantable[ best_coeff ];
3627
3628             block[j] += best_change;
3629
3630             if(best_coeff > last_non_zero){
3631                 last_non_zero= best_coeff;
3632                 assert(block[j]);
3633 #ifdef REFINE_STATS
3634 after_last++;
3635 #endif
3636             }else{
3637 #ifdef REFINE_STATS
3638 if(block[j]){
3639     if(block[j] - best_change){
3640         if(FFABS(block[j]) > FFABS(block[j] - best_change)){
3641             raise++;
3642         }else{
3643             lower++;
3644         }
3645     }else{
3646         from_zero++;
3647     }
3648 }else{
3649     to_zero++;
3650 }
3651 #endif
3652                 for(; last_non_zero>=start_i; last_non_zero--){
3653                     if(block[perm_scantable[last_non_zero]])
3654                         break;
3655                 }
3656             }
3657 #ifdef REFINE_STATS
3658 count++;
3659 if(256*256*256*64 % count == 0){
3660     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);
3661 }
3662 #endif
3663             run=0;
3664             rle_index=0;
3665             for(i=start_i; i<=last_non_zero; i++){
3666                 int j= perm_scantable[i];
3667                 const int level= block[j];
3668
3669                  if(level){
3670                      run_tab[rle_index++]=run;
3671                      run=0;
3672                  }else{
3673                      run++;
3674                  }
3675             }
3676
3677             s->dsp.add_8x8basis(rem, basis[j], best_unquant_change);
3678         }else{
3679             break;
3680         }
3681     }
3682 #ifdef REFINE_STATS
3683 if(last_non_zero>0){
3684 STOP_TIMER("iterative search")
3685 }
3686 }
3687 #endif
3688
3689     return last_non_zero;
3690 }
3691
3692 int dct_quantize_c(MpegEncContext *s,
3693                         DCTELEM *block, int n,
3694                         int qscale, int *overflow)
3695 {
3696     int i, j, level, last_non_zero, q, start_i;
3697     const int *qmat;
3698     const uint8_t *scantable= s->intra_scantable.scantable;
3699     int bias;
3700     int max=0;
3701     unsigned int threshold1, threshold2;
3702
3703     s->dsp.fdct (block);
3704
3705     if(s->dct_error_sum)
3706         s->denoise_dct(s, block);
3707
3708     if (s->mb_intra) {
3709         if (!s->h263_aic) {
3710             if (n < 4)
3711                 q = s->y_dc_scale;
3712             else
3713                 q = s->c_dc_scale;
3714             q = q << 3;
3715         } else
3716             /* For AIC we skip quant/dequant of INTRADC */
3717             q = 1 << 3;
3718
3719         /* note: block[0] is assumed to be positive */
3720         block[0] = (block[0] + (q >> 1)) / q;
3721         start_i = 1;
3722         last_non_zero = 0;
3723         qmat = s->q_intra_matrix[qscale];
3724         bias= s->intra_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
3725     } else {
3726         start_i = 0;
3727         last_non_zero = -1;
3728         qmat = s->q_inter_matrix[qscale];
3729         bias= s->inter_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
3730     }
3731     threshold1= (1<<QMAT_SHIFT) - bias - 1;
3732     threshold2= (threshold1<<1);
3733     for(i=63;i>=start_i;i--) {
3734         j = scantable[i];
3735         level = block[j] * qmat[j];
3736
3737         if(((unsigned)(level+threshold1))>threshold2){
3738             last_non_zero = i;
3739             break;
3740         }else{
3741             block[j]=0;
3742         }
3743     }
3744     for(i=start_i; i<=last_non_zero; i++) {
3745         j = scantable[i];
3746         level = block[j] * qmat[j];
3747
3748 //        if(   bias+level >= (1<<QMAT_SHIFT)
3749 //           || bias-level >= (1<<QMAT_SHIFT)){
3750         if(((unsigned)(level+threshold1))>threshold2){
3751             if(level>0){
3752                 level= (bias + level)>>QMAT_SHIFT;
3753                 block[j]= level;
3754             }else{
3755                 level= (bias - level)>>QMAT_SHIFT;
3756                 block[j]= -level;
3757             }
3758             max |=level;
3759         }else{
3760             block[j]=0;
3761         }
3762     }
3763     *overflow= s->max_qcoeff < max; //overflow might have happened
3764
3765     /* we need this permutation so that we correct the IDCT, we only permute the !=0 elements */
3766     if (s->dsp.idct_permutation_type != FF_NO_IDCT_PERM)
3767         ff_block_permute(block, s->dsp.idct_permutation, scantable, last_non_zero);
3768
3769     return last_non_zero;
3770 }
3771
3772 AVCodec h263_encoder = {
3773     "h263",
3774     AVMEDIA_TYPE_VIDEO,
3775     CODEC_ID_H263,
3776     sizeof(MpegEncContext),
3777     MPV_encode_init,
3778     MPV_encode_picture,
3779     MPV_encode_end,
3780     .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
3781     .long_name= NULL_IF_CONFIG_SMALL("H.263 / H.263-1996"),
3782 };
3783
3784 AVCodec h263p_encoder = {
3785     "h263p",
3786     AVMEDIA_TYPE_VIDEO,
3787     CODEC_ID_H263P,
3788     sizeof(MpegEncContext),
3789     MPV_encode_init,
3790     MPV_encode_picture,
3791     MPV_encode_end,
3792     .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
3793     .long_name= NULL_IF_CONFIG_SMALL("H.263+ / H.263-1998 / H.263 version 2"),
3794 };
3795
3796 AVCodec msmpeg4v1_encoder = {
3797     "msmpeg4v1",
3798     AVMEDIA_TYPE_VIDEO,
3799     CODEC_ID_MSMPEG4V1,
3800     sizeof(MpegEncContext),
3801     MPV_encode_init,
3802     MPV_encode_picture,
3803     MPV_encode_end,
3804     .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
3805     .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 1"),
3806 };
3807
3808 AVCodec msmpeg4v2_encoder = {
3809     "msmpeg4v2",
3810     AVMEDIA_TYPE_VIDEO,
3811     CODEC_ID_MSMPEG4V2,
3812     sizeof(MpegEncContext),
3813     MPV_encode_init,
3814     MPV_encode_picture,
3815     MPV_encode_end,
3816     .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
3817     .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"),
3818 };
3819
3820 AVCodec msmpeg4v3_encoder = {
3821     "msmpeg4",
3822     AVMEDIA_TYPE_VIDEO,
3823     CODEC_ID_MSMPEG4V3,
3824     sizeof(MpegEncContext),
3825     MPV_encode_init,
3826     MPV_encode_picture,
3827     MPV_encode_end,
3828     .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
3829     .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"),
3830 };
3831
3832 AVCodec wmv1_encoder = {
3833     "wmv1",
3834     AVMEDIA_TYPE_VIDEO,
3835     CODEC_ID_WMV1,
3836     sizeof(MpegEncContext),
3837     MPV_encode_init,
3838     MPV_encode_picture,
3839     MPV_encode_end,
3840     .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
3841     .long_name= NULL_IF_CONFIG_SMALL("Windows Media Video 7"),
3842 };