git.sesse.net Git - ffmpeg/blob - 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 mpegvideo_enc.c
  27  * The simplest mpeg encoder (well, it was the simplest!).
  28  */
  29
  30 #include "avcodec.h"
  31 #include "dsputil.h"
  32 #include "mpegvideo.h"
  33 #include "mpegvideo_common.h"
  34 #include "mjpegenc.h"
  35 #include "msmpeg4.h"
  36 #include "h263.h"
  37 #include "faandct.h"
  38 #include <limits.h>
  39
  40 //#undef NDEBUG
  41 //#include <assert.h>
  42
  43 static int encode_picture(MpegEncContext *s, int picture_number);
  44 static int dct_quantize_refine(MpegEncContext *s, DCTELEM *block, int16_t *weight, DCTELEM *orig, int n, int qscale);
  45 static int sse_mb(MpegEncContext *s);
  46
  47 /* enable all paranoid tests for rounding, overflows, etc... */
  48 //#define PARANOID
  49
  50 //#define DEBUG
  51
  52 static const uint16_t aanscales[64] = {
  53     /* precomputed values scaled up by 14 bits */
  54     16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
  55     22725, 31521, 29692, 26722, 22725, 17855, 12299,  6270,
  56     21407, 29692, 27969, 25172, 21407, 16819, 11585,  5906,
  57     19266, 26722, 25172, 22654, 19266, 15137, 10426,  5315,
  58     16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
  59     12873, 17855, 16819, 15137, 12873, 10114,  6967,  3552,
  60     8867 , 12299, 11585, 10426,  8867,  6967,  4799,  2446,
  61     4520 ,  6270,  5906,  5315,  4520,  3552,  2446,  1247
  62 };
  63
  64 static uint8_t default_mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
  65 static uint8_t default_fcode_tab[MAX_MV*2+1];
  66
  67 enum PixelFormat ff_yuv420p_list[2]= {PIX_FMT_YUV420P, -1};
  68
  69 void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
  70                            const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra)
  71 {
  72     int qscale;
  73     int shift=0;
  74
  75     for(qscale=qmin; qscale<=qmax; qscale++){
  76         int i;
  77         if (dsp->fdct == ff_jpeg_fdct_islow
  78 #ifdef FAAN_POSTSCALE
  79             || dsp->fdct == ff_faandct
  80 #endif
  81             ) {
  82             for(i=0;i<64;i++) {
  83                 const int j= dsp->idct_permutation[i];
  84                 /* 16 <= qscale * quant_matrix[i] <= 7905 */
  85                 /* 19952         <= aanscales[i] * qscale * quant_matrix[i]           <= 249205026 */
  86                 /* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
  87                 /* 3444240       >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
  88
  89                 qmat[qscale][i] = (int)((UINT64_C(1) << QMAT_SHIFT) /
  90                                 (qscale * quant_matrix[j]));
  91             }
  92         } else if (dsp->fdct == fdct_ifast
  93 #ifndef FAAN_POSTSCALE
  94                    || dsp->fdct == ff_faandct
  95 #endif
  96                    ) {
  97             for(i=0;i<64;i++) {
  98                 const int j= dsp->idct_permutation[i];
  99                 /* 16 <= qscale * quant_matrix[i] <= 7905 */
 100                 /* 19952         <= aanscales[i] * qscale * quant_matrix[i]           <= 249205026 */
 101                 /* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
 102                 /* 3444240       >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
 103
 104                 qmat[qscale][i] = (int)((UINT64_C(1) << (QMAT_SHIFT + 14)) /
 105                                 (aanscales[i] * qscale * quant_matrix[j]));
 106             }
 107         } else {
 108             for(i=0;i<64;i++) {
 109                 const int j= dsp->idct_permutation[i];
 110                 /* We can safely suppose that 16 <= quant_matrix[i] <= 255
 111                    So 16           <= qscale * quant_matrix[i]             <= 7905
 112                    so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
 113                    so 32768        >= (1<<19) / (qscale * quant_matrix[i]) >= 67
 114                 */
 115                 qmat[qscale][i] = (int)((UINT64_C(1) << QMAT_SHIFT) / (qscale * quant_matrix[j]));
 116 //                qmat  [qscale][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
 117                 qmat16[qscale][0][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[j]);
 118
 119                 if(qmat16[qscale][0][i]==0 || qmat16[qscale][0][i]==128*256) qmat16[qscale][0][i]=128*256-1;
 120                 qmat16[qscale][1][i]= ROUNDED_DIV(bias<<(16-QUANT_BIAS_SHIFT), qmat16[qscale][0][i]);
 121             }
 122         }
 123
 124         for(i=intra; i<64; i++){
 125             int64_t max= 8191;
 126             if (dsp->fdct == fdct_ifast
 127 #ifndef FAAN_POSTSCALE
 128                    || dsp->fdct == ff_faandct
 129 #endif
 130                    ) {
 131                 max= (8191LL*aanscales[i]) >> 14;
 132             }
 133             while(((max * qmat[qscale][i]) >> shift) > INT_MAX){
 134                 shift++;
 135             }
 136         }
 137     }
 138     if(shift){
 139         av_log(NULL, AV_LOG_INFO, "Warning, QMAT_SHIFT is larger than %d, overflows possible\n", QMAT_SHIFT - shift);
 140     }
 141 }
 142
 143 static inline void update_qscale(MpegEncContext *s){
 144     s->qscale= (s->lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
 145     s->qscale= av_clip(s->qscale, s->avctx->qmin, s->avctx->qmax);
 146
 147     s->lambda2= (s->lambda*s->lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
 148 }
 149
 150 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix){
 151     int i;
 152
 153     if(matrix){
 154         put_bits(pb, 1, 1);
 155         for(i=0;i<64;i++) {
 156             put_bits(pb, 8, matrix[ ff_zigzag_direct[i] ]);
 157         }
 158     }else
 159         put_bits(pb, 1, 0);
 160 }
 161
 162 static void copy_picture_attributes(MpegEncContext *s, AVFrame *dst, AVFrame *src){
 163     int i;
 164
 165     dst->pict_type              = src->pict_type;
 166     dst->quality                = src->quality;
 167     dst->coded_picture_number   = src->coded_picture_number;
 168     dst->display_picture_number = src->display_picture_number;
 169 //    dst->reference              = src->reference;
 170     dst->pts                    = src->pts;
 171     dst->interlaced_frame       = src->interlaced_frame;
 172     dst->top_field_first        = src->top_field_first;
 173
 174     if(s->avctx->me_threshold){
 175         if(!src->motion_val[0])
 176             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.motion_val not set!\n");
 177         if(!src->mb_type)
 178             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.mb_type not set!\n");
 179         if(!src->ref_index[0])
 180             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.ref_index not set!\n");
 181         if(src->motion_subsample_log2 != dst->motion_subsample_log2)
 182             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.motion_subsample_log2 doesn't match! (%d!=%d)\n",
 183             src->motion_subsample_log2, dst->motion_subsample_log2);
 184
 185         memcpy(dst->mb_type, src->mb_type, s->mb_stride * s->mb_height * sizeof(dst->mb_type[0]));
 186
 187         for(i=0; i<2; i++){
 188             int stride= ((16*s->mb_width )>>src->motion_subsample_log2) + 1;
 189             int height= ((16*s->mb_height)>>src->motion_subsample_log2);
 190
 191             if(src->motion_val[i] && src->motion_val[i] != dst->motion_val[i]){
 192                 memcpy(dst->motion_val[i], src->motion_val[i], 2*stride*height*sizeof(int16_t));
 193             }
 194             if(src->ref_index[i] && src->ref_index[i] != dst->ref_index[i]){
 195                 memcpy(dst->ref_index[i], src->ref_index[i], s->b8_stride*2*s->mb_height*sizeof(int8_t));
 196             }
 197         }
 198     }
 199 }
 200
 201 static void update_duplicate_context_after_me(MpegEncContext *dst, MpegEncContext *src){
 202 #define COPY(a) dst->a= src->a
 203     COPY(pict_type);
 204     COPY(current_picture);
 205     COPY(f_code);
 206     COPY(b_code);
 207     COPY(qscale);
 208     COPY(lambda);
 209     COPY(lambda2);
 210     COPY(picture_in_gop_number);
 211     COPY(gop_picture_number);
 212     COPY(frame_pred_frame_dct); //FIXME don't set in encode_header
 213     COPY(progressive_frame); //FIXME don't set in encode_header
 214     COPY(partitioned_frame); //FIXME don't set in encode_header
 215 #undef COPY
 216 }
 217
 218 /**
 219  * sets the given MpegEncContext to defaults for encoding.
 220  * the changed fields will not depend upon the prior state of the MpegEncContext.
 221  */
 222 static void MPV_encode_defaults(MpegEncContext *s){
 223     int i;
 224     MPV_common_defaults(s);
 225
 226     for(i=-16; i<16; i++){
 227         default_fcode_tab[i + MAX_MV]= 1;
 228     }
 229     s->me.mv_penalty= default_mv_penalty;
 230     s->fcode_tab= default_fcode_tab;
 231 }
 232
 233 /* init video encoder */
 234 int MPV_encode_init(AVCodecContext *avctx)
 235 {
 236     MpegEncContext *s = avctx->priv_data;
 237     int i;
 238     int chroma_h_shift, chroma_v_shift;
 239
 240     MPV_encode_defaults(s);
 241
 242     switch (avctx->codec_id) {
 243     case CODEC_ID_MPEG2VIDEO:
 244         if(avctx->pix_fmt != PIX_FMT_YUV420P && avctx->pix_fmt != PIX_FMT_YUV422P){
 245             av_log(avctx, AV_LOG_ERROR, "only YUV420 and YUV422 are supported\n");
 246             return -1;
 247         }
 248         break;
 249     case CODEC_ID_LJPEG:
 250     case CODEC_ID_MJPEG:
 251         if(avctx->pix_fmt != PIX_FMT_YUVJ420P && avctx->pix_fmt != PIX_FMT_YUVJ422P &&
 252            ((avctx->pix_fmt != PIX_FMT_YUV420P && avctx->pix_fmt != PIX_FMT_YUV422P) || avctx->strict_std_compliance>FF_COMPLIANCE_INOFFICIAL)){
 253             av_log(avctx, AV_LOG_ERROR, "colorspace not supported in jpeg\n");
 254             return -1;
 255         }
 256         break;
 257     default:
 258         if(avctx->pix_fmt != PIX_FMT_YUV420P){
 259             av_log(avctx, AV_LOG_ERROR, "only YUV420 is supported\n");
 260             return -1;
 261         }
 262     }
 263
 264     switch (avctx->pix_fmt) {
 265     case PIX_FMT_YUVJ422P:
 266     case PIX_FMT_YUV422P:
 267         s->chroma_format = CHROMA_422;
 268         break;
 269     case PIX_FMT_YUVJ420P:
 270     case PIX_FMT_YUV420P:
 271     default:
 272         s->chroma_format = CHROMA_420;
 273         break;
 274     }
 275
 276     s->bit_rate = avctx->bit_rate;
 277     s->width = avctx->width;
 278     s->height = avctx->height;
 279     if(avctx->gop_size > 600 && avctx->strict_std_compliance>FF_COMPLIANCE_EXPERIMENTAL){
 280         av_log(avctx, AV_LOG_ERROR, "Warning keyframe interval too large! reducing it ...\n");
 281         avctx->gop_size=600;
 282     }
 283     s->gop_size = avctx->gop_size;
 284     s->avctx = avctx;
 285     s->flags= avctx->flags;
 286     s->flags2= avctx->flags2;
 287     s->max_b_frames= avctx->max_b_frames;
 288     s->codec_id= avctx->codec->id;
 289     s->luma_elim_threshold  = avctx->luma_elim_threshold;
 290     s->chroma_elim_threshold= avctx->chroma_elim_threshold;
 291     s->strict_std_compliance= avctx->strict_std_compliance;
 292     s->data_partitioning= avctx->flags & CODEC_FLAG_PART;
 293     s->quarter_sample= (avctx->flags & CODEC_FLAG_QPEL)!=0;
 294     s->mpeg_quant= avctx->mpeg_quant;
 295     s->rtp_mode= !!avctx->rtp_payload_size;
 296     s->intra_dc_precision= avctx->intra_dc_precision;
 297     s->user_specified_pts = AV_NOPTS_VALUE;
 298
 299     if (s->gop_size <= 1) {
 300         s->intra_only = 1;
 301         s->gop_size = 12;
 302     } else {
 303         s->intra_only = 0;
 304     }
 305
 306     s->me_method = avctx->me_method;
 307
 308     /* Fixed QSCALE */
 309     s->fixed_qscale = !!(avctx->flags & CODEC_FLAG_QSCALE);
 310
 311     s->adaptive_quant= (   s->avctx->lumi_masking
 312                         || s->avctx->dark_masking
 313                         || s->avctx->temporal_cplx_masking
 314                         || s->avctx->spatial_cplx_masking
 315                         || s->avctx->p_masking
 316                         || s->avctx->border_masking
 317                         || (s->flags&CODEC_FLAG_QP_RD))
 318                        && !s->fixed_qscale;
 319
 320     s->obmc= !!(s->flags & CODEC_FLAG_OBMC);
 321     s->loop_filter= !!(s->flags & CODEC_FLAG_LOOP_FILTER);
 322     s->alternate_scan= !!(s->flags & CODEC_FLAG_ALT_SCAN);
 323     s->intra_vlc_format= !!(s->flags2 & CODEC_FLAG2_INTRA_VLC);
 324     s->q_scale_type= !!(s->flags2 & CODEC_FLAG2_NON_LINEAR_QUANT);
 325
 326     if(avctx->rc_max_rate && !avctx->rc_buffer_size){
 327         av_log(avctx, AV_LOG_ERROR, "a vbv buffer size is needed, for encoding with a maximum bitrate\n");
 328         return -1;
 329     }
 330
 331     if(avctx->rc_min_rate && avctx->rc_max_rate != avctx->rc_min_rate){
 332         av_log(avctx, AV_LOG_INFO, "Warning min_rate > 0 but min_rate != max_rate isn't recommended!\n");
 333     }
 334
 335     if(avctx->rc_min_rate && avctx->rc_min_rate > avctx->bit_rate){
 336         av_log(avctx, AV_LOG_ERROR, "bitrate below min bitrate\n");
 337         return -1;
 338     }
 339
 340     if(avctx->rc_max_rate && avctx->rc_max_rate < avctx->bit_rate){
 341         av_log(avctx, AV_LOG_INFO, "bitrate above max bitrate\n");
 342         return -1;
 343     }
 344
 345     if(avctx->rc_max_rate && avctx->rc_max_rate == avctx->bit_rate && avctx->rc_max_rate != avctx->rc_min_rate){
 346         av_log(avctx, AV_LOG_INFO, "impossible bitrate constraints, this will fail\n");
 347     }
 348
 349     if(avctx->rc_buffer_size && avctx->bit_rate*av_q2d(avctx->time_base) > avctx->rc_buffer_size){
 350         av_log(avctx, AV_LOG_ERROR, "VBV buffer too small for bitrate\n");
 351         return -1;
 352     }
 353
 354     if(avctx->bit_rate*av_q2d(avctx->time_base) > avctx->bit_rate_tolerance){
 355         av_log(avctx, AV_LOG_ERROR, "bitrate tolerance too small for bitrate\n");
 356         return -1;
 357     }
 358
 359     if(   s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate
 360        && (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO)
 361        && 90000LL * (avctx->rc_buffer_size-1) > s->avctx->rc_max_rate*0xFFFFLL){
 362
 363         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");
 364     }
 365
 366     if((s->flags & CODEC_FLAG_4MV) && s->codec_id != CODEC_ID_MPEG4
 367        && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P && s->codec_id != CODEC_ID_FLV1){
 368         av_log(avctx, AV_LOG_ERROR, "4MV not supported by codec\n");
 369         return -1;
 370     }
 371
 372     if(s->obmc && s->avctx->mb_decision != FF_MB_DECISION_SIMPLE){
 373         av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with simple mb decision\n");
 374         return -1;
 375     }
 376
 377     if(s->obmc && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P){
 378         av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with H263(+)\n");
 379         return -1;
 380     }
 381
 382     if(s->quarter_sample && s->codec_id != CODEC_ID_MPEG4){
 383         av_log(avctx, AV_LOG_ERROR, "qpel not supported by codec\n");
 384         return -1;
 385     }
 386
 387     if(s->data_partitioning && s->codec_id != CODEC_ID_MPEG4){
 388         av_log(avctx, AV_LOG_ERROR, "data partitioning not supported by codec\n");
 389         return -1;
 390     }
 391
 392     if(s->max_b_frames && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO){
 393         av_log(avctx, AV_LOG_ERROR, "b frames not supported by codec\n");
 394         return -1;
 395     }
 396
 397     if((s->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME|CODEC_FLAG_ALT_SCAN))
 398        && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG2VIDEO){
 399         av_log(avctx, AV_LOG_ERROR, "interlacing not supported by codec\n");
 400         return -1;
 401     }
 402
 403     if(s->mpeg_quant && s->codec_id != CODEC_ID_MPEG4){ //FIXME mpeg2 uses that too
 404         av_log(avctx, AV_LOG_ERROR, "mpeg2 style quantization not supported by codec\n");
 405         return -1;
 406     }
 407
 408     if((s->flags & CODEC_FLAG_CBP_RD) && !(s->flags & CODEC_FLAG_TRELLIS_QUANT)){
 409         av_log(avctx, AV_LOG_ERROR, "CBP RD needs trellis quant\n");
 410         return -1;
 411     }
 412
 413     if((s->flags & CODEC_FLAG_QP_RD) && s->avctx->mb_decision != FF_MB_DECISION_RD){
 414         av_log(avctx, AV_LOG_ERROR, "QP RD needs mbd=2\n");
 415         return -1;
 416     }
 417
 418     if(s->avctx->scenechange_threshold < 1000000000 && (s->flags & CODEC_FLAG_CLOSED_GOP)){
 419         av_log(avctx, AV_LOG_ERROR, "closed gop with scene change detection arent supported yet, set threshold to 1000000000\n");
 420         return -1;
 421     }
 422
 423     if((s->flags2 & CODEC_FLAG2_INTRA_VLC) && s->codec_id != CODEC_ID_MPEG2VIDEO){
 424         av_log(avctx, AV_LOG_ERROR, "intra vlc table not supported by codec\n");
 425         return -1;
 426     }
 427
 428     if(s->flags & CODEC_FLAG_LOW_DELAY){
 429         if (s->codec_id != CODEC_ID_MPEG2VIDEO && s->codec_id != CODEC_ID_MPEG1VIDEO){
 430             av_log(avctx, AV_LOG_ERROR, "low delay forcing is only available for mpeg1/2\n");
 431             return -1;
 432         }
 433         if (s->max_b_frames != 0){
 434             av_log(avctx, AV_LOG_ERROR, "b frames cannot be used with low delay\n");
 435             return -1;
 436         }
 437     }
 438
 439     if(s->q_scale_type == 1){
 440         if(s->codec_id != CODEC_ID_MPEG2VIDEO){
 441             av_log(avctx, AV_LOG_ERROR, "non linear quant is only available for mpeg2\n");
 442             return -1;
 443         }
 444         if(avctx->qmax > 12){
 445             av_log(avctx, AV_LOG_ERROR, "non linear quant only supports qmax <= 12 currently\n");
 446             return -1;
 447         }
 448     }
 449
 450     if(s->avctx->thread_count > 1 && s->codec_id != CODEC_ID_MPEG4
 451        && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO
 452        && (s->codec_id != CODEC_ID_H263P || !(s->flags & CODEC_FLAG_H263P_SLICE_STRUCT))){
 453         av_log(avctx, AV_LOG_ERROR, "multi threaded encoding not supported by codec\n");
 454         return -1;
 455     }
 456
 457     if(s->avctx->thread_count > 1)
 458         s->rtp_mode= 1;
 459
 460     if(!avctx->time_base.den || !avctx->time_base.num){
 461         av_log(avctx, AV_LOG_ERROR, "framerate not set\n");
 462         return -1;
 463     }
 464
 465     i= (INT_MAX/2+128)>>8;
 466     if(avctx->me_threshold >= i){
 467         av_log(avctx, AV_LOG_ERROR, "me_threshold too large, max is %d\n", i - 1);
 468         return -1;
 469     }
 470     if(avctx->mb_threshold >= i){
 471         av_log(avctx, AV_LOG_ERROR, "mb_threshold too large, max is %d\n", i - 1);
 472         return -1;
 473     }
 474
 475     if(avctx->b_frame_strategy && (avctx->flags&CODEC_FLAG_PASS2)){
 476         av_log(avctx, AV_LOG_INFO, "notice: b_frame_strategy only affects the first pass\n");
 477         avctx->b_frame_strategy = 0;
 478     }
 479
 480     i= ff_gcd(avctx->time_base.den, avctx->time_base.num);
 481     if(i > 1){
 482         av_log(avctx, AV_LOG_INFO, "removing common factors from framerate\n");
 483         avctx->time_base.den /= i;
 484         avctx->time_base.num /= i;
 485 //        return -1;
 486     }
 487
 488     if(s->codec_id==CODEC_ID_MJPEG){
 489         s->intra_quant_bias= 1<<(QUANT_BIAS_SHIFT-1); //(a + x/2)/x
 490         s->inter_quant_bias= 0;
 491     }else if(s->mpeg_quant || s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO){
 492         s->intra_quant_bias= 3<<(QUANT_BIAS_SHIFT-3); //(a + x*3/8)/x
 493         s->inter_quant_bias= 0;
 494     }else{
 495         s->intra_quant_bias=0;
 496         s->inter_quant_bias=-(1<<(QUANT_BIAS_SHIFT-2)); //(a - x/4)/x
 497     }
 498
 499     if(avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)
 500         s->intra_quant_bias= avctx->intra_quant_bias;
 501     if(avctx->inter_quant_bias != FF_DEFAULT_QUANT_BIAS)
 502         s->inter_quant_bias= avctx->inter_quant_bias;
 503
 504     avcodec_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift, &chroma_v_shift);
 505
 506     if(avctx->codec_id == CODEC_ID_MPEG4 && s->avctx->time_base.den > (1<<16)-1){
 507         av_log(avctx, AV_LOG_ERROR, "timebase not supported by mpeg 4 standard\n");
 508         return -1;
 509     }
 510     s->time_increment_bits = av_log2(s->avctx->time_base.den - 1) + 1;
 511
 512     switch(avctx->codec->id) {
 513     case CODEC_ID_MPEG1VIDEO:
 514         s->out_format = FMT_MPEG1;
 515         s->low_delay= !!(s->flags & CODEC_FLAG_LOW_DELAY);
 516         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
 517         break;
 518     case CODEC_ID_MPEG2VIDEO:
 519         s->out_format = FMT_MPEG1;
 520         s->low_delay= !!(s->flags & CODEC_FLAG_LOW_DELAY);
 521         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
 522         s->rtp_mode= 1;
 523         break;
 524     case CODEC_ID_LJPEG:
 525     case CODEC_ID_MJPEG:
 526         s->out_format = FMT_MJPEG;
 527         s->intra_only = 1; /* force intra only for jpeg */
 528         s->mjpeg_vsample[0] = 2;
 529         s->mjpeg_vsample[1] = 2>>chroma_v_shift;
 530         s->mjpeg_vsample[2] = 2>>chroma_v_shift;
 531         s->mjpeg_hsample[0] = 2;
 532         s->mjpeg_hsample[1] = 2>>chroma_h_shift;
 533         s->mjpeg_hsample[2] = 2>>chroma_h_shift;
 534         if (!(ENABLE_MJPEG_ENCODER || ENABLE_LJPEG_ENCODER)
 535             || ff_mjpeg_encode_init(s) < 0)
 536             return -1;
 537         avctx->delay=0;
 538         s->low_delay=1;
 539         break;
 540     case CODEC_ID_H261:
 541         if (!ENABLE_H261_ENCODER)  return -1;
 542         if (ff_h261_get_picture_format(s->width, s->height) < 0) {
 543             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);
 544             return -1;
 545         }
 546         s->out_format = FMT_H261;
 547         avctx->delay=0;
 548         s->low_delay=1;
 549         break;
 550     case CODEC_ID_H263:
 551         if (!ENABLE_H263_ENCODER)  return -1;
 552         if (h263_get_picture_format(s->width, s->height) == 7) {
 553             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);
 554             return -1;
 555         }
 556         s->out_format = FMT_H263;
 557         s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
 558         avctx->delay=0;
 559         s->low_delay=1;
 560         break;
 561     case CODEC_ID_H263P:
 562         s->out_format = FMT_H263;
 563         s->h263_plus = 1;
 564         /* Fx */
 565         s->umvplus = (avctx->flags & CODEC_FLAG_H263P_UMV) ? 1:0;
 566         s->h263_aic= (avctx->flags & CODEC_FLAG_AC_PRED) ? 1:0;
 567         s->modified_quant= s->h263_aic;
 568         s->alt_inter_vlc= (avctx->flags & CODEC_FLAG_H263P_AIV) ? 1:0;
 569         s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
 570         s->loop_filter= (avctx->flags & CODEC_FLAG_LOOP_FILTER) ? 1:0;
 571         s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
 572         s->h263_slice_structured= (s->flags & CODEC_FLAG_H263P_SLICE_STRUCT) ? 1:0;
 573
 574         /* /Fx */
 575         /* These are just to be sure */
 576         avctx->delay=0;
 577         s->low_delay=1;
 578         break;
 579     case CODEC_ID_FLV1:
 580         s->out_format = FMT_H263;
 581         s->h263_flv = 2; /* format = 1; 11-bit codes */
 582         s->unrestricted_mv = 1;
 583         s->rtp_mode=0; /* don't allow GOB */
 584         avctx->delay=0;
 585         s->low_delay=1;
 586         break;
 587     case CODEC_ID_RV10:
 588         s->out_format = FMT_H263;
 589         avctx->delay=0;
 590         s->low_delay=1;
 591         break;
 592     case CODEC_ID_RV20:
 593         s->out_format = FMT_H263;
 594         avctx->delay=0;
 595         s->low_delay=1;
 596         s->modified_quant=1;
 597         s->h263_aic=1;
 598         s->h263_plus=1;
 599         s->loop_filter=1;
 600         s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
 601         break;
 602     case CODEC_ID_MPEG4:
 603         s->out_format = FMT_H263;
 604         s->h263_pred = 1;
 605         s->unrestricted_mv = 1;
 606         s->low_delay= s->max_b_frames ? 0 : 1;
 607         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
 608         break;
 609     case CODEC_ID_MSMPEG4V1:
 610         s->out_format = FMT_H263;
 611         s->h263_msmpeg4 = 1;
 612         s->h263_pred = 1;
 613         s->unrestricted_mv = 1;
 614         s->msmpeg4_version= 1;
 615         avctx->delay=0;
 616         s->low_delay=1;
 617         break;
 618     case CODEC_ID_MSMPEG4V2:
 619         s->out_format = FMT_H263;
 620         s->h263_msmpeg4 = 1;
 621         s->h263_pred = 1;
 622         s->unrestricted_mv = 1;
 623         s->msmpeg4_version= 2;
 624         avctx->delay=0;
 625         s->low_delay=1;
 626         break;
 627     case CODEC_ID_MSMPEG4V3:
 628         s->out_format = FMT_H263;
 629         s->h263_msmpeg4 = 1;
 630         s->h263_pred = 1;
 631         s->unrestricted_mv = 1;
 632         s->msmpeg4_version= 3;
 633         s->flipflop_rounding=1;
 634         avctx->delay=0;
 635         s->low_delay=1;
 636         break;
 637     case CODEC_ID_WMV1:
 638         s->out_format = FMT_H263;
 639         s->h263_msmpeg4 = 1;
 640         s->h263_pred = 1;
 641         s->unrestricted_mv = 1;
 642         s->msmpeg4_version= 4;
 643         s->flipflop_rounding=1;
 644         avctx->delay=0;
 645         s->low_delay=1;
 646         break;
 647     case CODEC_ID_WMV2:
 648         s->out_format = FMT_H263;
 649         s->h263_msmpeg4 = 1;
 650         s->h263_pred = 1;
 651         s->unrestricted_mv = 1;
 652         s->msmpeg4_version= 5;
 653         s->flipflop_rounding=1;
 654         avctx->delay=0;
 655         s->low_delay=1;
 656         break;
 657     default:
 658         return -1;
 659     }
 660
 661     avctx->has_b_frames= !s->low_delay;
 662
 663     s->encoding = 1;
 664
 665     /* init */
 666     if (MPV_common_init(s) < 0)
 667         return -1;
 668
 669     if(!s->dct_quantize)
 670         s->dct_quantize = dct_quantize_c;
 671     if(!s->denoise_dct)
 672         s->denoise_dct = denoise_dct_c;
 673     s->fast_dct_quantize = s->dct_quantize;
 674     if(s->flags & CODEC_FLAG_TRELLIS_QUANT)
 675         s->dct_quantize = dct_quantize_trellis_c;
 676
 677     if((ENABLE_H263P_ENCODER || ENABLE_RV20_ENCODER) && s->modified_quant)
 678         s->chroma_qscale_table= ff_h263_chroma_qscale_table;
 679     s->progressive_frame=
 680     s->progressive_sequence= !(avctx->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME|CODEC_FLAG_ALT_SCAN));
 681     s->quant_precision=5;
 682
 683     ff_set_cmp(&s->dsp, s->dsp.ildct_cmp, s->avctx->ildct_cmp);
 684     ff_set_cmp(&s->dsp, s->dsp.frame_skip_cmp, s->avctx->frame_skip_cmp);
 685
 686     if (ENABLE_H261_ENCODER && s->out_format == FMT_H261)
 687         ff_h261_encode_init(s);
 688     if (ENABLE_ANY_H263_ENCODER && s->out_format == FMT_H263)
 689         h263_encode_init(s);
 690     if (ENABLE_MSMPEG4_ENCODER && s->msmpeg4_version)
 691         ff_msmpeg4_encode_init(s);
 692     if ((ENABLE_MPEG1VIDEO_ENCODER || ENABLE_MPEG2VIDEO_ENCODER)
 693         && s->out_format == FMT_MPEG1)
 694         ff_mpeg1_encode_init(s);
 695
 696     /* init q matrix */
 697     for(i=0;i<64;i++) {
 698         int j= s->dsp.idct_permutation[i];
 699         if(ENABLE_MPEG4_ENCODER && s->codec_id==CODEC_ID_MPEG4 && s->mpeg_quant){
 700             s->intra_matrix[j] = ff_mpeg4_default_intra_matrix[i];
 701             s->inter_matrix[j] = ff_mpeg4_default_non_intra_matrix[i];
 702         }else if(s->out_format == FMT_H263 || s->out_format == FMT_H261){
 703             s->intra_matrix[j] =
 704             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
 705         }else
 706         { /* mpeg1/2 */
 707             s->intra_matrix[j] = ff_mpeg1_default_intra_matrix[i];
 708             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
 709         }
 710         if(s->avctx->intra_matrix)
 711             s->intra_matrix[j] = s->avctx->intra_matrix[i];
 712         if(s->avctx->inter_matrix)
 713             s->inter_matrix[j] = s->avctx->inter_matrix[i];
 714     }
 715
 716     /* precompute matrix */
 717     /* for mjpeg, we do include qscale in the matrix */
 718     if (s->out_format != FMT_MJPEG) {
 719         ff_convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
 720                        s->intra_matrix, s->intra_quant_bias, avctx->qmin, 31, 1);
 721         ff_convert_matrix(&s->dsp, s->q_inter_matrix, s->q_inter_matrix16,
 722                        s->inter_matrix, s->inter_quant_bias, avctx->qmin, 31, 0);
 723     }
 724
 725     if(ff_rate_control_init(s) < 0)
 726         return -1;
 727
 728     return 0;
 729 }
 730
 731 int MPV_encode_end(AVCodecContext *avctx)
 732 {
 733     MpegEncContext *s = avctx->priv_data;
 734
 735     ff_rate_control_uninit(s);
 736
 737     MPV_common_end(s);
 738     if ((ENABLE_MJPEG_ENCODER || ENABLE_LJPEG_ENCODER) && s->out_format == FMT_MJPEG)
 739         ff_mjpeg_encode_close(s);
 740
 741     av_freep(&avctx->extradata);
 742
 743     return 0;
 744 }
 745
 746 static int get_sae(uint8_t *src, int ref, int stride){
 747     int x,y;
 748     int acc=0;
 749
 750     for(y=0; y<16; y++){
 751         for(x=0; x<16; x++){
 752             acc+= FFABS(src[x+y*stride] - ref);
 753         }
 754     }
 755
 756     return acc;
 757 }
 758
 759 static int get_intra_count(MpegEncContext *s, uint8_t *src, uint8_t *ref, int stride){
 760     int x, y, w, h;
 761     int acc=0;
 762
 763     w= s->width &~15;
 764     h= s->height&~15;
 765
 766     for(y=0; y<h; y+=16){
 767         for(x=0; x<w; x+=16){
 768             int offset= x + y*stride;
 769             int sad = s->dsp.sad[0](NULL, src + offset, ref + offset, stride, 16);
 770             int mean= (s->dsp.pix_sum(src + offset, stride) + 128)>>8;
 771             int sae = get_sae(src + offset, mean, stride);
 772
 773             acc+= sae + 500 < sad;
 774         }
 775     }
 776     return acc;
 777 }
 778
 779
 780 static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
 781     AVFrame *pic=NULL;
 782     int64_t pts;
 783     int i;
 784     const int encoding_delay= s->max_b_frames;
 785     int direct=1;
 786
 787     if(pic_arg){
 788         pts= pic_arg->pts;
 789         pic_arg->display_picture_number= s->input_picture_number++;
 790
 791         if(pts != AV_NOPTS_VALUE){
 792             if(s->user_specified_pts != AV_NOPTS_VALUE){
 793                 int64_t time= pts;
 794                 int64_t last= s->user_specified_pts;
 795
 796                 if(time <= last){
 797                     av_log(s->avctx, AV_LOG_ERROR, "Error, Invalid timestamp=%"PRId64", last=%"PRId64"\n", pts, s->user_specified_pts);
 798                     return -1;
 799                 }
 800             }
 801             s->user_specified_pts= pts;
 802         }else{
 803             if(s->user_specified_pts != AV_NOPTS_VALUE){
 804                 s->user_specified_pts=
 805                 pts= s->user_specified_pts + 1;
 806                 av_log(s->avctx, AV_LOG_INFO, "Warning: AVFrame.pts=? trying to guess (%"PRId64")\n", pts);
 807             }else{
 808                 pts= pic_arg->display_picture_number;
 809             }
 810         }
 811     }
 812
 813   if(pic_arg){
 814     if(encoding_delay && !(s->flags&CODEC_FLAG_INPUT_PRESERVED)) direct=0;
 815     if(pic_arg->linesize[0] != s->linesize) direct=0;
 816     if(pic_arg->linesize[1] != s->uvlinesize) direct=0;
 817     if(pic_arg->linesize[2] != s->uvlinesize) direct=0;
 818
 819 //    av_log(AV_LOG_DEBUG, "%d %d %d %d\n",pic_arg->linesize[0], pic_arg->linesize[1], s->linesize, s->uvlinesize);
 820
 821     if(direct){
 822         i= ff_find_unused_picture(s, 1);
 823
 824         pic= (AVFrame*)&s->picture[i];
 825         pic->reference= 3;
 826
 827         for(i=0; i<4; i++){
 828             pic->data[i]= pic_arg->data[i];
 829             pic->linesize[i]= pic_arg->linesize[i];
 830         }
 831         alloc_picture(s, (Picture*)pic, 1);
 832     }else{
 833         i= ff_find_unused_picture(s, 0);
 834
 835         pic= (AVFrame*)&s->picture[i];
 836         pic->reference= 3;
 837
 838         alloc_picture(s, (Picture*)pic, 0);
 839
 840         if(   pic->data[0] + INPLACE_OFFSET == pic_arg->data[0]
 841            && pic->data[1] + INPLACE_OFFSET == pic_arg->data[1]
 842            && pic->data[2] + INPLACE_OFFSET == pic_arg->data[2]){
 843        // empty
 844         }else{
 845             int h_chroma_shift, v_chroma_shift;
 846             avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &h_chroma_shift, &v_chroma_shift);
 847
 848             for(i=0; i<3; i++){
 849                 int src_stride= pic_arg->linesize[i];
 850                 int dst_stride= i ? s->uvlinesize : s->linesize;
 851                 int h_shift= i ? h_chroma_shift : 0;
 852                 int v_shift= i ? v_chroma_shift : 0;
 853                 int w= s->width >>h_shift;
 854                 int h= s->height>>v_shift;
 855                 uint8_t *src= pic_arg->data[i];
 856                 uint8_t *dst= pic->data[i];
 857
 858                 if(!s->avctx->rc_buffer_size)
 859                     dst +=INPLACE_OFFSET;
 860
 861                 if(src_stride==dst_stride)
 862                     memcpy(dst, src, src_stride*h);
 863                 else{
 864                     while(h--){
 865                         memcpy(dst, src, w);
 866                         dst += dst_stride;
 867                         src += src_stride;
 868                     }
 869                 }
 870             }
 871         }
 872     }
 873     copy_picture_attributes(s, pic, pic_arg);
 874     pic->pts= pts; //we set this here to avoid modifiying pic_arg
 875   }
 876
 877     /* shift buffer entries */
 878     for(i=1; i<MAX_PICTURE_COUNT /*s->encoding_delay+1*/; i++)
 879         s->input_picture[i-1]= s->input_picture[i];
 880
 881     s->input_picture[encoding_delay]= (Picture*)pic;
 882
 883     return 0;
 884 }
 885
 886 static int skip_check(MpegEncContext *s, Picture *p, Picture *ref){
 887     int x, y, plane;
 888     int score=0;
 889     int64_t score64=0;
 890
 891     for(plane=0; plane<3; plane++){
 892         const int stride= p->linesize[plane];
 893         const int bw= plane ? 1 : 2;
 894         for(y=0; y<s->mb_height*bw; y++){
 895             for(x=0; x<s->mb_width*bw; x++){
 896                 int off= p->type == FF_BUFFER_TYPE_SHARED ? 0: 16;
 897                 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);
 898
 899                 switch(s->avctx->frame_skip_exp){
 900                     case 0: score= FFMAX(score, v); break;
 901                     case 1: score+= FFABS(v);break;
 902                     case 2: score+= v*v;break;
 903                     case 3: score64+= FFABS(v*v*(int64_t)v);break;
 904                     case 4: score64+= v*v*(int64_t)(v*v);break;
 905                 }
 906             }
 907         }
 908     }
 909
 910     if(score) score64= score;
 911
 912     if(score64 < s->avctx->frame_skip_threshold)
 913         return 1;
 914     if(score64 < ((s->avctx->frame_skip_factor * (int64_t)s->lambda)>>8))
 915         return 1;
 916     return 0;
 917 }
 918
 919 static int estimate_best_b_count(MpegEncContext *s){
 920     AVCodec *codec= avcodec_find_encoder(s->avctx->codec_id);
 921     AVCodecContext *c= avcodec_alloc_context();
 922     AVFrame input[FF_MAX_B_FRAMES+2];
 923     const int scale= s->avctx->brd_scale;
 924     int i, j, out_size, p_lambda, b_lambda, lambda2;
 925     int outbuf_size= s->width * s->height; //FIXME
 926     uint8_t *outbuf= av_malloc(outbuf_size);
 927     int64_t best_rd= INT64_MAX;
 928     int best_b_count= -1;
 929
 930     assert(scale>=0 && scale <=3);
 931
 932 //    emms_c();
 933     p_lambda= s->last_lambda_for[P_TYPE]; //s->next_picture_ptr->quality;
 934     b_lambda= s->last_lambda_for[B_TYPE]; //p_lambda *FFABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset;
 935     if(!b_lambda) b_lambda= p_lambda; //FIXME we should do this somewhere else
 936     lambda2= (b_lambda*b_lambda + (1<<FF_LAMBDA_SHIFT)/2 ) >> FF_LAMBDA_SHIFT;
 937
 938     c->width = s->width >> scale;
 939     c->height= s->height>> scale;
 940     c->flags= CODEC_FLAG_QSCALE | CODEC_FLAG_PSNR | CODEC_FLAG_INPUT_PRESERVED /*| CODEC_FLAG_EMU_EDGE*/;
 941     c->flags|= s->avctx->flags & CODEC_FLAG_QPEL;
 942     c->mb_decision= s->avctx->mb_decision;
 943     c->me_cmp= s->avctx->me_cmp;
 944     c->mb_cmp= s->avctx->mb_cmp;
 945     c->me_sub_cmp= s->avctx->me_sub_cmp;
 946     c->pix_fmt = PIX_FMT_YUV420P;
 947     c->time_base= s->avctx->time_base;
 948     c->max_b_frames= s->max_b_frames;
 949
 950     if (avcodec_open(c, codec) < 0)
 951         return -1;
 952
 953     for(i=0; i<s->max_b_frames+2; i++){
 954         int ysize= c->width*c->height;
 955         int csize= (c->width/2)*(c->height/2);
 956         Picture pre_input, *pre_input_ptr= i ? s->input_picture[i-1] : s->next_picture_ptr;
 957
 958         avcodec_get_frame_defaults(&input[i]);
 959         input[i].data[0]= av_malloc(ysize + 2*csize);
 960         input[i].data[1]= input[i].data[0] + ysize;
 961         input[i].data[2]= input[i].data[1] + csize;
 962         input[i].linesize[0]= c->width;
 963         input[i].linesize[1]=
 964         input[i].linesize[2]= c->width/2;
 965
 966         if(pre_input_ptr && (!i || s->input_picture[i-1])) {
 967             pre_input= *pre_input_ptr;
 968
 969             if(pre_input.type != FF_BUFFER_TYPE_SHARED && i) {
 970                 pre_input.data[0]+=INPLACE_OFFSET;
 971                 pre_input.data[1]+=INPLACE_OFFSET;
 972                 pre_input.data[2]+=INPLACE_OFFSET;
 973             }
 974
 975             s->dsp.shrink[scale](input[i].data[0], input[i].linesize[0], pre_input.data[0], pre_input.linesize[0], c->width, c->height);
 976             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);
 977             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);
 978         }
 979     }
 980
 981     for(j=0; j<s->max_b_frames+1; j++){
 982         int64_t rd=0;
 983
 984         if(!s->input_picture[j])
 985             break;
 986
 987         c->error[0]= c->error[1]= c->error[2]= 0;
 988
 989         input[0].pict_type= I_TYPE;
 990         input[0].quality= 1 * FF_QP2LAMBDA;
 991         out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[0]);
 992 //        rd += (out_size * lambda2) >> FF_LAMBDA_SHIFT;
 993
 994         for(i=0; i<s->max_b_frames+1; i++){
 995             int is_p= i % (j+1) == j || i==s->max_b_frames;
 996
 997             input[i+1].pict_type= is_p ? P_TYPE : B_TYPE;
 998             input[i+1].quality= is_p ? p_lambda : b_lambda;
 999             out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[i+1]);
1000             rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
1001         }
1002
1003         /* get the delayed frames */
1004         while(out_size){
1005             out_size = avcodec_encode_video(c, outbuf, outbuf_size, NULL);
1006             rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
1007         }
1008
1009         rd += c->error[0] + c->error[1] + c->error[2];
1010
1011         if(rd < best_rd){
1012             best_rd= rd;
1013             best_b_count= j;
1014         }
1015     }
1016
1017     av_freep(&outbuf);
1018     avcodec_close(c);
1019     av_freep(&c);
1020
1021     for(i=0; i<s->max_b_frames+2; i++){
1022         av_freep(&input[i].data[0]);
1023     }
1024
1025     return best_b_count;
1026 }
1027
1028 static void select_input_picture(MpegEncContext *s){
1029     int i;
1030
1031     for(i=1; i<MAX_PICTURE_COUNT; i++)
1032         s->reordered_input_picture[i-1]= s->reordered_input_picture[i];
1033     s->reordered_input_picture[MAX_PICTURE_COUNT-1]= NULL;
1034
1035     /* set next picture type & ordering */
1036     if(s->reordered_input_picture[0]==NULL && s->input_picture[0]){
1037         if(/*s->picture_in_gop_number >= s->gop_size ||*/ s->next_picture_ptr==NULL || s->intra_only){
1038             s->reordered_input_picture[0]= s->input_picture[0];
1039             s->reordered_input_picture[0]->pict_type= I_TYPE;
1040             s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
1041         }else{
1042             int b_frames;
1043
1044             if(s->avctx->frame_skip_threshold || s->avctx->frame_skip_factor){
1045                 if(s->picture_in_gop_number < s->gop_size && skip_check(s, s->input_picture[0], s->next_picture_ptr)){
1046                 //FIXME check that te gop check above is +-1 correct
1047 //av_log(NULL, AV_LOG_DEBUG, "skip %p %"PRId64"\n", s->input_picture[0]->data[0], s->input_picture[0]->pts);
1048
1049                     if(s->input_picture[0]->type == FF_BUFFER_TYPE_SHARED){
1050                         for(i=0; i<4; i++)
1051                             s->input_picture[0]->data[i]= NULL;
1052                         s->input_picture[0]->type= 0;
1053                     }else{
1054                         assert(   s->input_picture[0]->type==FF_BUFFER_TYPE_USER
1055                                || s->input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
1056
1057                         s->avctx->release_buffer(s->avctx, (AVFrame*)s->input_picture[0]);
1058                     }
1059
1060                     emms_c();
1061                     ff_vbv_update(s, 0);
1062
1063                     goto no_output_pic;
1064                 }
1065             }
1066
1067             if(s->flags&CODEC_FLAG_PASS2){
1068                 for(i=0; i<s->max_b_frames+1; i++){
1069                     int pict_num= s->input_picture[0]->display_picture_number + i;
1070
1071                     if(pict_num >= s->rc_context.num_entries)
1072                         break;
1073                     if(!s->input_picture[i]){
1074                         s->rc_context.entry[pict_num-1].new_pict_type = P_TYPE;
1075                         break;
1076                     }
1077
1078                     s->input_picture[i]->pict_type=
1079                         s->rc_context.entry[pict_num].new_pict_type;
1080                 }
1081             }
1082
1083             if(s->avctx->b_frame_strategy==0){
1084                 b_frames= s->max_b_frames;
1085                 while(b_frames && !s->input_picture[b_frames]) b_frames--;
1086             }else if(s->avctx->b_frame_strategy==1){
1087                 for(i=1; i<s->max_b_frames+1; i++){
1088                     if(s->input_picture[i] && s->input_picture[i]->b_frame_score==0){
1089                         s->input_picture[i]->b_frame_score=
1090                             get_intra_count(s, s->input_picture[i  ]->data[0],
1091                                                s->input_picture[i-1]->data[0], s->linesize) + 1;
1092                     }
1093                 }
1094                 for(i=0; i<s->max_b_frames+1; i++){
1095                     if(s->input_picture[i]==NULL || s->input_picture[i]->b_frame_score - 1 > s->mb_num/s->avctx->b_sensitivity) break;
1096                 }
1097
1098                 b_frames= FFMAX(0, i-1);
1099
1100                 /* reset scores */
1101                 for(i=0; i<b_frames+1; i++){
1102                     s->input_picture[i]->b_frame_score=0;
1103                 }
1104             }else if(s->avctx->b_frame_strategy==2){
1105                 b_frames= estimate_best_b_count(s);
1106             }else{
1107                 av_log(s->avctx, AV_LOG_ERROR, "illegal b frame strategy\n");
1108                 b_frames=0;
1109             }
1110
1111             emms_c();
1112 //static int b_count=0;
1113 //b_count+= b_frames;
1114 //av_log(s->avctx, AV_LOG_DEBUG, "b_frames: %d\n", b_count);
1115
1116             for(i= b_frames - 1; i>=0; i--){
1117                 int type= s->input_picture[i]->pict_type;
1118                 if(type && type != B_TYPE)
1119                     b_frames= i;
1120             }
1121             if(s->input_picture[b_frames]->pict_type == B_TYPE && b_frames == s->max_b_frames){
1122                 av_log(s->avctx, AV_LOG_ERROR, "warning, too many b frames in a row\n");
1123             }
1124
1125             if(s->picture_in_gop_number + b_frames >= s->gop_size){
1126               if((s->flags2 & CODEC_FLAG2_STRICT_GOP) && s->gop_size > s->picture_in_gop_number){
1127                     b_frames= s->gop_size - s->picture_in_gop_number - 1;
1128               }else{
1129                 if(s->flags & CODEC_FLAG_CLOSED_GOP)
1130                     b_frames=0;
1131                 s->input_picture[b_frames]->pict_type= I_TYPE;
1132               }
1133             }
1134
1135             if(   (s->flags & CODEC_FLAG_CLOSED_GOP)
1136                && b_frames
1137                && s->input_picture[b_frames]->pict_type== I_TYPE)
1138                 b_frames--;
1139
1140             s->reordered_input_picture[0]= s->input_picture[b_frames];
1141             if(s->reordered_input_picture[0]->pict_type != I_TYPE)
1142                 s->reordered_input_picture[0]->pict_type= P_TYPE;
1143             s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
1144             for(i=0; i<b_frames; i++){
1145                 s->reordered_input_picture[i+1]= s->input_picture[i];
1146                 s->reordered_input_picture[i+1]->pict_type= B_TYPE;
1147                 s->reordered_input_picture[i+1]->coded_picture_number= s->coded_picture_number++;
1148             }
1149         }
1150     }
1151 no_output_pic:
1152     if(s->reordered_input_picture[0]){
1153         s->reordered_input_picture[0]->reference= s->reordered_input_picture[0]->pict_type!=B_TYPE ? 3 : 0;
1154
1155         copy_picture(&s->new_picture, s->reordered_input_picture[0]);
1156
1157         if(s->reordered_input_picture[0]->type == FF_BUFFER_TYPE_SHARED || s->avctx->rc_buffer_size){
1158             // input is a shared pix, so we can't modifiy it -> alloc a new one & ensure that the shared one is reuseable
1159
1160             int i= ff_find_unused_picture(s, 0);
1161             Picture *pic= &s->picture[i];
1162
1163             pic->reference              = s->reordered_input_picture[0]->reference;
1164             alloc_picture(s, pic, 0);
1165
1166             /* mark us unused / free shared pic */
1167             if(s->reordered_input_picture[0]->type == FF_BUFFER_TYPE_INTERNAL)
1168                 s->avctx->release_buffer(s->avctx, (AVFrame*)s->reordered_input_picture[0]);
1169             for(i=0; i<4; i++)
1170                 s->reordered_input_picture[0]->data[i]= NULL;
1171             s->reordered_input_picture[0]->type= 0;
1172
1173             copy_picture_attributes(s, (AVFrame*)pic, (AVFrame*)s->reordered_input_picture[0]);
1174
1175             s->current_picture_ptr= pic;
1176         }else{
1177             // input is not a shared pix -> reuse buffer for current_pix
1178
1179             assert(   s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_USER
1180                    || s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
1181
1182             s->current_picture_ptr= s->reordered_input_picture[0];
1183             for(i=0; i<4; i++){
1184                 s->new_picture.data[i]+= INPLACE_OFFSET;
1185             }
1186         }
1187         copy_picture(&s->current_picture, s->current_picture_ptr);
1188
1189         s->picture_number= s->new_picture.display_picture_number;
1190 //printf("dpn:%d\n", s->picture_number);
1191     }else{
1192        memset(&s->new_picture, 0, sizeof(Picture));
1193     }
1194 }
1195
1196 int MPV_encode_picture(AVCodecContext *avctx,
1197                        unsigned char *buf, int buf_size, void *data)
1198 {
1199     MpegEncContext *s = avctx->priv_data;
1200     AVFrame *pic_arg = data;
1201     int i, stuffing_count;
1202
1203     for(i=0; i<avctx->thread_count; i++){
1204         int start_y= s->thread_context[i]->start_mb_y;
1205         int   end_y= s->thread_context[i]->  end_mb_y;
1206         int h= s->mb_height;
1207         uint8_t *start= buf + (size_t)(((int64_t) buf_size)*start_y/h);
1208         uint8_t *end  = buf + (size_t)(((int64_t) buf_size)*  end_y/h);
1209
1210         init_put_bits(&s->thread_context[i]->pb, start, end - start);
1211     }
1212
1213     s->picture_in_gop_number++;
1214
1215     if(load_input_picture(s, pic_arg) < 0)
1216         return -1;
1217
1218     select_input_picture(s);
1219
1220     /* output? */
1221     if(s->new_picture.data[0]){
1222         s->pict_type= s->new_picture.pict_type;
1223 //emms_c();
1224 //printf("qs:%f %f %d\n", s->new_picture.quality, s->current_picture.quality, s->qscale);
1225         MPV_frame_start(s, avctx);
1226 vbv_retry:
1227         if (encode_picture(s, s->picture_number) < 0)
1228             return -1;
1229
1230         avctx->real_pict_num  = s->picture_number;
1231         avctx->header_bits = s->header_bits;
1232         avctx->mv_bits     = s->mv_bits;
1233         avctx->misc_bits   = s->misc_bits;
1234         avctx->i_tex_bits  = s->i_tex_bits;
1235         avctx->p_tex_bits  = s->p_tex_bits;
1236         avctx->i_count     = s->i_count;
1237         avctx->p_count     = s->mb_num - s->i_count - s->skip_count; //FIXME f/b_count in avctx
1238         avctx->skip_count  = s->skip_count;
1239
1240         MPV_frame_end(s);
1241
1242         if (ENABLE_MJPEG_ENCODER && s->out_format == FMT_MJPEG)
1243             ff_mjpeg_encode_picture_trailer(s);
1244
1245         if(avctx->rc_buffer_size){
1246             RateControlContext *rcc= &s->rc_context;
1247             int max_size= rcc->buffer_index/3;
1248
1249             if(put_bits_count(&s->pb) > max_size && s->lambda < s->avctx->lmax){
1250                 s->next_lambda= FFMAX(s->lambda+1, s->lambda*(s->qscale+1) / s->qscale);
1251                 if(s->adaptive_quant){
1252                     int i;
1253                     for(i=0; i<s->mb_height*s->mb_stride; i++)
1254                         s->lambda_table[i]= FFMAX(s->lambda_table[i]+1, s->lambda_table[i]*(s->qscale+1) / s->qscale);
1255                 }
1256                 s->mb_skipped = 0;        //done in MPV_frame_start()
1257                 if(s->pict_type==P_TYPE){ //done in encode_picture() so we must undo it
1258                     if(s->flipflop_rounding || s->codec_id == CODEC_ID_H263P || s->codec_id == CODEC_ID_MPEG4)
1259                         s->no_rounding ^= 1;
1260                 }
1261                 if(s->pict_type!=B_TYPE){
1262                     s->time_base= s->last_time_base;
1263                     s->last_non_b_time= s->time - s->pp_time;
1264                 }
1265 //                av_log(NULL, AV_LOG_ERROR, "R:%d ", s->next_lambda);
1266                 for(i=0; i<avctx->thread_count; i++){
1267                     PutBitContext *pb= &s->thread_context[i]->pb;
1268                     init_put_bits(pb, pb->buf, pb->buf_end - pb->buf);
1269                 }
1270                 goto vbv_retry;
1271             }
1272
1273             assert(s->avctx->rc_max_rate);
1274         }
1275
1276         if(s->flags&CODEC_FLAG_PASS1)
1277             ff_write_pass1_stats(s);
1278
1279         for(i=0; i<4; i++){
1280             s->current_picture_ptr->error[i]= s->current_picture.error[i];
1281             avctx->error[i] += s->current_picture_ptr->error[i];
1282         }
1283
1284         if(s->flags&CODEC_FLAG_PASS1)
1285             assert(avctx->header_bits + avctx->mv_bits + avctx->misc_bits + avctx->i_tex_bits + avctx->p_tex_bits == put_bits_count(&s->pb));
1286         flush_put_bits(&s->pb);
1287         s->frame_bits  = put_bits_count(&s->pb);
1288
1289         stuffing_count= ff_vbv_update(s, s->frame_bits);
1290         if(stuffing_count){
1291             if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < stuffing_count + 50){
1292                 av_log(s->avctx, AV_LOG_ERROR, "stuffing too large\n");
1293                 return -1;
1294             }
1295
1296             switch(s->codec_id){
1297             case CODEC_ID_MPEG1VIDEO:
1298             case CODEC_ID_MPEG2VIDEO:
1299                 while(stuffing_count--){
1300                     put_bits(&s->pb, 8, 0);
1301                 }
1302             break;
1303             case CODEC_ID_MPEG4:
1304                 put_bits(&s->pb, 16, 0);
1305                 put_bits(&s->pb, 16, 0x1C3);
1306                 stuffing_count -= 4;
1307                 while(stuffing_count--){
1308                     put_bits(&s->pb, 8, 0xFF);
1309                 }
1310             break;
1311             default:
1312                 av_log(s->avctx, AV_LOG_ERROR, "vbv buffer overflow\n");
1313             }
1314             flush_put_bits(&s->pb);
1315             s->frame_bits  = put_bits_count(&s->pb);
1316         }
1317
1318         /* update mpeg1/2 vbv_delay for CBR */
1319         if(s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate && s->out_format == FMT_MPEG1
1320            && 90000LL * (avctx->rc_buffer_size-1) <= s->avctx->rc_max_rate*0xFFFFLL){
1321             int vbv_delay;
1322
1323             assert(s->repeat_first_field==0);
1324
1325             vbv_delay= lrintf(90000 * s->rc_context.buffer_index / s->avctx->rc_max_rate);
1326             assert(vbv_delay < 0xFFFF);
1327
1328             s->vbv_delay_ptr[0] &= 0xF8;
1329             s->vbv_delay_ptr[0] |= vbv_delay>>13;
1330             s->vbv_delay_ptr[1]  = vbv_delay>>5;
1331             s->vbv_delay_ptr[2] &= 0x07;
1332             s->vbv_delay_ptr[2] |= vbv_delay<<3;
1333         }
1334         s->total_bits += s->frame_bits;
1335         avctx->frame_bits  = s->frame_bits;
1336     }else{
1337         assert((pbBufPtr(&s->pb) == s->pb.buf));
1338         s->frame_bits=0;
1339     }
1340     assert((s->frame_bits&7)==0);
1341
1342     return s->frame_bits/8;
1343 }
1344
1345 static inline void dct_single_coeff_elimination(MpegEncContext *s, int n, int threshold)
1346 {
1347     static const char tab[64]=
1348         {3,2,2,1,1,1,1,1,
1349          1,1,1,1,1,1,1,1,
1350          1,1,1,1,1,1,1,1,
1351          0,0,0,0,0,0,0,0,
1352          0,0,0,0,0,0,0,0,
1353          0,0,0,0,0,0,0,0,
1354          0,0,0,0,0,0,0,0,
1355          0,0,0,0,0,0,0,0};
1356     int score=0;
1357     int run=0;
1358     int i;
1359     DCTELEM *block= s->block[n];
1360     const int last_index= s->block_last_index[n];
1361     int skip_dc;
1362
1363     if(threshold<0){
1364         skip_dc=0;
1365         threshold= -threshold;
1366     }else
1367         skip_dc=1;
1368
1369     /* are all which we could set to zero are allready zero? */
1370     if(last_index<=skip_dc - 1) return;
1371
1372     for(i=0; i<=last_index; i++){
1373         const int j = s->intra_scantable.permutated[i];
1374         const int level = FFABS(block[j]);
1375         if(level==1){
1376             if(skip_dc && i==0) continue;
1377             score+= tab[run];
1378             run=0;
1379         }else if(level>1){
1380             return;
1381         }else{
1382             run++;
1383         }
1384     }
1385     if(score >= threshold) return;
1386     for(i=skip_dc; i<=last_index; i++){
1387         const int j = s->intra_scantable.permutated[i];
1388         block[j]=0;
1389     }
1390     if(block[0]) s->block_last_index[n]= 0;
1391     else         s->block_last_index[n]= -1;
1392 }
1393
1394 static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block, int last_index)
1395 {
1396     int i;
1397     const int maxlevel= s->max_qcoeff;
1398     const int minlevel= s->min_qcoeff;
1399     int overflow=0;
1400
1401     if(s->mb_intra){
1402         i=1; //skip clipping of intra dc
1403     }else
1404         i=0;
1405
1406     for(;i<=last_index; i++){
1407         const int j= s->intra_scantable.permutated[i];
1408         int level = block[j];
1409
1410         if     (level>maxlevel){
1411             level=maxlevel;
1412             overflow++;
1413         }else if(level<minlevel){
1414             level=minlevel;
1415             overflow++;
1416         }
1417
1418         block[j]= level;
1419     }
1420
1421     if(overflow && s->avctx->mb_decision == FF_MB_DECISION_SIMPLE)
1422         av_log(s->avctx, AV_LOG_INFO, "warning, clipping %d dct coefficients to %d..%d\n", overflow, minlevel, maxlevel);
1423 }
1424
1425 static void get_visual_weight(int16_t *weight, uint8_t *ptr, int stride){
1426     int x, y;
1427 //FIXME optimize
1428     for(y=0; y<8; y++){
1429         for(x=0; x<8; x++){
1430             int x2, y2;
1431             int sum=0;
1432             int sqr=0;
1433             int count=0;
1434
1435             for(y2= FFMAX(y-1, 0); y2 < FFMIN(8, y+2); y2++){
1436                 for(x2= FFMAX(x-1, 0); x2 < FFMIN(8, x+2); x2++){
1437                     int v= ptr[x2 + y2*stride];
1438                     sum += v;
1439                     sqr += v*v;
1440                     count++;
1441                 }
1442             }
1443             weight[x + 8*y]= (36*ff_sqrt(count*sqr - sum*sum)) / count;
1444         }
1445     }
1446 }
1447
1448 static av_always_inline void encode_mb_internal(MpegEncContext *s, int motion_x, int motion_y, int mb_block_height, int mb_block_count)
1449 {
1450     int16_t weight[8][64];
1451     DCTELEM orig[8][64];
1452     const int mb_x= s->mb_x;
1453     const int mb_y= s->mb_y;
1454     int i;
1455     int skip_dct[8];
1456     int dct_offset   = s->linesize*8; //default for progressive frames
1457     uint8_t *ptr_y, *ptr_cb, *ptr_cr;
1458     int wrap_y, wrap_c;
1459
1460     for(i=0; i<mb_block_count; i++) skip_dct[i]=s->skipdct;
1461
1462     if(s->adaptive_quant){
1463         const int last_qp= s->qscale;
1464         const int mb_xy= mb_x + mb_y*s->mb_stride;
1465
1466         s->lambda= s->lambda_table[mb_xy];
1467         update_qscale(s);
1468
1469         if(!(s->flags&CODEC_FLAG_QP_RD)){
1470             s->qscale= s->current_picture_ptr->qscale_table[mb_xy];
1471             s->dquant= s->qscale - last_qp;
1472
1473             if(s->out_format==FMT_H263){
1474                 s->dquant= av_clip(s->dquant, -2, 2);
1475
1476                 if(s->codec_id==CODEC_ID_MPEG4){
1477                     if(!s->mb_intra){
1478                         if(s->pict_type == B_TYPE){
1479                             if(s->dquant&1 || s->mv_dir&MV_DIRECT)
1480                                 s->dquant= 0;
1481                         }
1482                         if(s->mv_type==MV_TYPE_8X8)
1483                             s->dquant=0;
1484                     }
1485                 }
1486             }
1487         }
1488         ff_set_qscale(s, last_qp + s->dquant);
1489     }else if(s->flags&CODEC_FLAG_QP_RD)
1490         ff_set_qscale(s, s->qscale + s->dquant);
1491
1492     wrap_y = s->linesize;
1493     wrap_c = s->uvlinesize;
1494     ptr_y = s->new_picture.data[0] + (mb_y * 16 * wrap_y) + mb_x * 16;
1495     ptr_cb = s->new_picture.data[1] + (mb_y * mb_block_height * wrap_c) + mb_x * 8;
1496     ptr_cr = s->new_picture.data[2] + (mb_y * mb_block_height * wrap_c) + mb_x * 8;
1497
1498     if(mb_x*16+16 > s->width || mb_y*16+16 > s->height){
1499         uint8_t *ebuf= s->edge_emu_buffer + 32;
1500         ff_emulated_edge_mc(ebuf            , ptr_y , wrap_y,16,16,mb_x*16,mb_y*16, s->width   , s->height);
1501         ptr_y= ebuf;
1502         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);
1503         ptr_cb= ebuf+18*wrap_y;
1504         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);
1505         ptr_cr= ebuf+18*wrap_y+8;
1506     }
1507
1508     if (s->mb_intra) {
1509         if(s->flags&CODEC_FLAG_INTERLACED_DCT){
1510             int progressive_score, interlaced_score;
1511
1512             s->interlaced_dct=0;
1513             progressive_score= s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y, 8)
1514                               +s->dsp.ildct_cmp[4](s, ptr_y + wrap_y*8, NULL, wrap_y, 8) - 400;
1515
1516             if(progressive_score > 0){
1517                 interlaced_score = s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y*2, 8)
1518                                   +s->dsp.ildct_cmp[4](s, ptr_y + wrap_y  , NULL, wrap_y*2, 8);
1519                 if(progressive_score > interlaced_score){
1520                     s->interlaced_dct=1;
1521
1522                     dct_offset= wrap_y;
1523                     wrap_y<<=1;
1524                     if (s->chroma_format == CHROMA_422)
1525                         wrap_c<<=1;
1526                 }
1527             }
1528         }
1529
1530         s->dsp.get_pixels(s->block[0], ptr_y                 , wrap_y);
1531         s->dsp.get_pixels(s->block[1], ptr_y              + 8, wrap_y);
1532         s->dsp.get_pixels(s->block[2], ptr_y + dct_offset    , wrap_y);
1533         s->dsp.get_pixels(s->block[3], ptr_y + dct_offset + 8, wrap_y);
1534
1535         if(s->flags&CODEC_FLAG_GRAY){
1536             skip_dct[4]= 1;
1537             skip_dct[5]= 1;
1538         }else{
1539             s->dsp.get_pixels(s->block[4], ptr_cb, wrap_c);
1540             s->dsp.get_pixels(s->block[5], ptr_cr, wrap_c);
1541             if(!s->chroma_y_shift){ /* 422 */
1542                 s->dsp.get_pixels(s->block[6], ptr_cb + (dct_offset>>1), wrap_c);
1543                 s->dsp.get_pixels(s->block[7], ptr_cr + (dct_offset>>1), wrap_c);
1544             }
1545         }
1546     }else{
1547         op_pixels_func (*op_pix)[4];
1548         qpel_mc_func (*op_qpix)[16];
1549         uint8_t *dest_y, *dest_cb, *dest_cr;
1550
1551         dest_y  = s->dest[0];
1552         dest_cb = s->dest[1];
1553         dest_cr = s->dest[2];
1554
1555         if ((!s->no_rounding) || s->pict_type==B_TYPE){
1556             op_pix = s->dsp.put_pixels_tab;
1557             op_qpix= s->dsp.put_qpel_pixels_tab;
1558         }else{
1559             op_pix = s->dsp.put_no_rnd_pixels_tab;
1560             op_qpix= s->dsp.put_no_rnd_qpel_pixels_tab;
1561         }
1562
1563         if (s->mv_dir & MV_DIR_FORWARD) {
1564             MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix, op_qpix);
1565             op_pix = s->dsp.avg_pixels_tab;
1566             op_qpix= s->dsp.avg_qpel_pixels_tab;
1567         }
1568         if (s->mv_dir & MV_DIR_BACKWARD) {
1569             MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix, op_qpix);
1570         }
1571
1572         if(s->flags&CODEC_FLAG_INTERLACED_DCT){
1573             int progressive_score, interlaced_score;
1574
1575             s->interlaced_dct=0;
1576             progressive_score= s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y, 8)
1577                               +s->dsp.ildct_cmp[0](s, dest_y + wrap_y*8, ptr_y + wrap_y*8, wrap_y, 8) - 400;
1578
1579             if(s->avctx->ildct_cmp == FF_CMP_VSSE) progressive_score -= 400;
1580
1581             if(progressive_score>0){
1582                 interlaced_score = s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y*2, 8)
1583                                   +s->dsp.ildct_cmp[0](s, dest_y + wrap_y  , ptr_y + wrap_y  , wrap_y*2, 8);
1584
1585                 if(progressive_score > interlaced_score){
1586                     s->interlaced_dct=1;
1587
1588                     dct_offset= wrap_y;
1589                     wrap_y<<=1;
1590                     if (s->chroma_format == CHROMA_422)
1591                         wrap_c<<=1;
1592                 }
1593             }
1594         }
1595
1596         s->dsp.diff_pixels(s->block[0], ptr_y                 , dest_y                 , wrap_y);
1597         s->dsp.diff_pixels(s->block[1], ptr_y              + 8, dest_y              + 8, wrap_y);
1598         s->dsp.diff_pixels(s->block[2], ptr_y + dct_offset    , dest_y + dct_offset    , wrap_y);
1599         s->dsp.diff_pixels(s->block[3], ptr_y + dct_offset + 8, dest_y + dct_offset + 8, wrap_y);
1600
1601         if(s->flags&CODEC_FLAG_GRAY){
1602             skip_dct[4]= 1;
1603             skip_dct[5]= 1;
1604         }else{
1605             s->dsp.diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
1606             s->dsp.diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
1607             if(!s->chroma_y_shift){ /* 422 */
1608                 s->dsp.diff_pixels(s->block[6], ptr_cb + (dct_offset>>1), dest_cb + (dct_offset>>1), wrap_c);
1609                 s->dsp.diff_pixels(s->block[7], ptr_cr + (dct_offset>>1), dest_cr + (dct_offset>>1), wrap_c);
1610             }
1611         }
1612         /* pre quantization */
1613         if(s->current_picture.mc_mb_var[s->mb_stride*mb_y+ mb_x]<2*s->qscale*s->qscale){
1614             //FIXME optimize
1615             if(s->dsp.sad[1](NULL, ptr_y               , dest_y               , wrap_y, 8) < 20*s->qscale) skip_dct[0]= 1;
1616             if(s->dsp.sad[1](NULL, ptr_y            + 8, dest_y            + 8, wrap_y, 8) < 20*s->qscale) skip_dct[1]= 1;
1617             if(s->dsp.sad[1](NULL, ptr_y +dct_offset   , dest_y +dct_offset   , wrap_y, 8) < 20*s->qscale) skip_dct[2]= 1;
1618             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;
1619             if(s->dsp.sad[1](NULL, ptr_cb              , dest_cb              , wrap_c, 8) < 20*s->qscale) skip_dct[4]= 1;
1620             if(s->dsp.sad[1](NULL, ptr_cr              , dest_cr              , wrap_c, 8) < 20*s->qscale) skip_dct[5]= 1;
1621             if(!s->chroma_y_shift){ /* 422 */
1622                 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;
1623                 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;
1624             }
1625         }
1626     }
1627
1628     if(s->avctx->quantizer_noise_shaping){
1629         if(!skip_dct[0]) get_visual_weight(weight[0], ptr_y                 , wrap_y);
1630         if(!skip_dct[1]) get_visual_weight(weight[1], ptr_y              + 8, wrap_y);
1631         if(!skip_dct[2]) get_visual_weight(weight[2], ptr_y + dct_offset    , wrap_y);
1632         if(!skip_dct[3]) get_visual_weight(weight[3], ptr_y + dct_offset + 8, wrap_y);
1633         if(!skip_dct[4]) get_visual_weight(weight[4], ptr_cb                , wrap_c);
1634         if(!skip_dct[5]) get_visual_weight(weight[5], ptr_cr                , wrap_c);
1635         if(!s->chroma_y_shift){ /* 422 */
1636             if(!skip_dct[6]) get_visual_weight(weight[6], ptr_cb + (dct_offset>>1), wrap_c);
1637             if(!skip_dct[7]) get_visual_weight(weight[7], ptr_cr + (dct_offset>>1), wrap_c);
1638         }
1639         memcpy(orig[0], s->block[0], sizeof(DCTELEM)*64*mb_block_count);
1640     }
1641
1642     /* DCT & quantize */
1643     assert(s->out_format!=FMT_MJPEG || s->qscale==8);
1644     {
1645         for(i=0;i<mb_block_count;i++) {
1646             if(!skip_dct[i]){
1647                 int overflow;
1648                 s->block_last_index[i] = s->dct_quantize(s, s->block[i], i, s->qscale, &overflow);
1649             // FIXME we could decide to change to quantizer instead of clipping
1650             // JS: I don't think that would be a good idea it could lower quality instead
1651             //     of improve it. Just INTRADC clipping deserves changes in quantizer
1652                 if (overflow) clip_coeffs(s, s->block[i], s->block_last_index[i]);
1653             }else
1654                 s->block_last_index[i]= -1;
1655         }
1656         if(s->avctx->quantizer_noise_shaping){
1657             for(i=0;i<mb_block_count;i++) {
1658                 if(!skip_dct[i]){
1659                     s->block_last_index[i] = dct_quantize_refine(s, s->block[i], weight[i], orig[i], i, s->qscale);
1660                 }
1661             }
1662         }
1663
1664         if(s->luma_elim_threshold && !s->mb_intra)
1665             for(i=0; i<4; i++)
1666                 dct_single_coeff_elimination(s, i, s->luma_elim_threshold);
1667         if(s->chroma_elim_threshold && !s->mb_intra)
1668             for(i=4; i<mb_block_count; i++)
1669                 dct_single_coeff_elimination(s, i, s->chroma_elim_threshold);
1670
1671         if(s->flags & CODEC_FLAG_CBP_RD){
1672             for(i=0;i<mb_block_count;i++) {
1673                 if(s->block_last_index[i] == -1)
1674                     s->coded_score[i]= INT_MAX/256;
1675             }
1676         }
1677     }
1678
1679     if((s->flags&CODEC_FLAG_GRAY) && s->mb_intra){
1680         s->block_last_index[4]=
1681         s->block_last_index[5]= 0;
1682         s->block[4][0]=
1683         s->block[5][0]= (1024 + s->c_dc_scale/2)/ s->c_dc_scale;
1684     }
1685
1686     //non c quantize code returns incorrect block_last_index FIXME
1687     if(s->alternate_scan && s->dct_quantize != dct_quantize_c){
1688         for(i=0; i<mb_block_count; i++){
1689             int j;
1690             if(s->block_last_index[i]>0){
1691                 for(j=63; j>0; j--){
1692                     if(s->block[i][ s->intra_scantable.permutated[j] ]) break;
1693                 }
1694                 s->block_last_index[i]= j;
1695             }
1696         }
1697     }
1698
1699     /* huffman encode */
1700     switch(s->codec_id){ //FIXME funct ptr could be slightly faster
1701     case CODEC_ID_MPEG1VIDEO:
1702     case CODEC_ID_MPEG2VIDEO:
1703         if (ENABLE_MPEG1VIDEO_ENCODER || ENABLE_MPEG2VIDEO_ENCODER)
1704             mpeg1_encode_mb(s, s->block, motion_x, motion_y);
1705         break;
1706     case CODEC_ID_MPEG4:
1707         if (ENABLE_MPEG4_ENCODER)
1708             mpeg4_encode_mb(s, s->block, motion_x, motion_y);
1709         break;
1710     case CODEC_ID_MSMPEG4V2:
1711     case CODEC_ID_MSMPEG4V3:
1712     case CODEC_ID_WMV1:
1713         if (ENABLE_MSMPEG4_ENCODER)
1714             msmpeg4_encode_mb(s, s->block, motion_x, motion_y);
1715         break;
1716     case CODEC_ID_WMV2:
1717         if (ENABLE_WMV2_ENCODER)
1718             ff_wmv2_encode_mb(s, s->block, motion_x, motion_y);
1719         break;
1720     case CODEC_ID_H261:
1721         if (ENABLE_H261_ENCODER)
1722             ff_h261_encode_mb(s, s->block, motion_x, motion_y);
1723         break;
1724     case CODEC_ID_H263:
1725     case CODEC_ID_H263P:
1726     case CODEC_ID_FLV1:
1727     case CODEC_ID_RV10:
1728     case CODEC_ID_RV20:
1729         if (ENABLE_H263_ENCODER || ENABLE_H263P_ENCODER ||
1730             ENABLE_FLV_ENCODER  || ENABLE_RV10_ENCODER  || ENABLE_RV20_ENCODER)
1731             h263_encode_mb(s, s->block, motion_x, motion_y);
1732         break;
1733     case CODEC_ID_MJPEG:
1734         if (ENABLE_MJPEG_ENCODER)
1735             ff_mjpeg_encode_mb(s, s->block);
1736         break;
1737     default:
1738         assert(0);
1739     }
1740 }
1741
1742 static av_always_inline void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
1743 {
1744     if (s->chroma_format == CHROMA_420) encode_mb_internal(s, motion_x, motion_y,  8, 6);
1745     else                                encode_mb_internal(s, motion_x, motion_y, 16, 8);
1746 }
1747
1748 static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type){
1749     int i;
1750
1751     memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
1752
1753     /* mpeg1 */
1754     d->mb_skip_run= s->mb_skip_run;
1755     for(i=0; i<3; i++)
1756         d->last_dc[i]= s->last_dc[i];
1757
1758     /* statistics */
1759     d->mv_bits= s->mv_bits;
1760     d->i_tex_bits= s->i_tex_bits;
1761     d->p_tex_bits= s->p_tex_bits;
1762     d->i_count= s->i_count;
1763     d->f_count= s->f_count;
1764     d->b_count= s->b_count;
1765     d->skip_count= s->skip_count;
1766     d->misc_bits= s->misc_bits;
1767     d->last_bits= 0;
1768
1769     d->mb_skipped= 0;
1770     d->qscale= s->qscale;
1771     d->dquant= s->dquant;
1772
1773     d->esc3_level_length= s->esc3_level_length;
1774 }
1775
1776 static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int type){
1777     int i;
1778
1779     memcpy(d->mv, s->mv, 2*4*2*sizeof(int));
1780     memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
1781
1782     /* mpeg1 */
1783     d->mb_skip_run= s->mb_skip_run;
1784     for(i=0; i<3; i++)
1785         d->last_dc[i]= s->last_dc[i];
1786
1787     /* statistics */
1788     d->mv_bits= s->mv_bits;
1789     d->i_tex_bits= s->i_tex_bits;
1790     d->p_tex_bits= s->p_tex_bits;
1791     d->i_count= s->i_count;
1792     d->f_count= s->f_count;
1793     d->b_count= s->b_count;
1794     d->skip_count= s->skip_count;
1795     d->misc_bits= s->misc_bits;
1796
1797     d->mb_intra= s->mb_intra;
1798     d->mb_skipped= s->mb_skipped;
1799     d->mv_type= s->mv_type;
1800     d->mv_dir= s->mv_dir;
1801     d->pb= s->pb;
1802     if(s->data_partitioning){
1803         d->pb2= s->pb2;
1804         d->tex_pb= s->tex_pb;
1805     }
1806     d->block= s->block;
1807     for(i=0; i<8; i++)
1808         d->block_last_index[i]= s->block_last_index[i];
1809     d->interlaced_dct= s->interlaced_dct;
1810     d->qscale= s->qscale;
1811
1812     d->esc3_level_length= s->esc3_level_length;
1813 }
1814
1815 static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type,
1816                            PutBitContext pb[2], PutBitContext pb2[2], PutBitContext tex_pb[2],
1817                            int *dmin, int *next_block, int motion_x, int motion_y)
1818 {
1819     int score;
1820     uint8_t *dest_backup[3];
1821
1822     copy_context_before_encode(s, backup, type);
1823
1824     s->block= s->blocks[*next_block];
1825     s->pb= pb[*next_block];
1826     if(s->data_partitioning){
1827         s->pb2   = pb2   [*next_block];
1828         s->tex_pb= tex_pb[*next_block];
1829     }
1830
1831     if(*next_block){
1832         memcpy(dest_backup, s->dest, sizeof(s->dest));
1833         s->dest[0] = s->rd_scratchpad;
1834         s->dest[1] = s->rd_scratchpad + 16*s->linesize;
1835         s->dest[2] = s->rd_scratchpad + 16*s->linesize + 8;
1836         assert(s->linesize >= 32); //FIXME
1837     }
1838
1839     encode_mb(s, motion_x, motion_y);
1840
1841     score= put_bits_count(&s->pb);
1842     if(s->data_partitioning){
1843         score+= put_bits_count(&s->pb2);
1844         score+= put_bits_count(&s->tex_pb);
1845     }
1846
1847     if(s->avctx->mb_decision == FF_MB_DECISION_RD){
1848         MPV_decode_mb(s, s->block);
1849
1850         score *= s->lambda2;
1851         score += sse_mb(s) << FF_LAMBDA_SHIFT;
1852     }
1853
1854     if(*next_block){
1855         memcpy(s->dest, dest_backup, sizeof(s->dest));
1856     }
1857
1858     if(score<*dmin){
1859         *dmin= score;
1860         *next_block^=1;
1861
1862         copy_context_after_encode(best, s, type);
1863     }
1864 }
1865
1866 static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride){
1867     uint32_t *sq = ff_squareTbl + 256;
1868     int acc=0;
1869     int x,y;
1870
1871     if(w==16 && h==16)
1872         return s->dsp.sse[0](NULL, src1, src2, stride, 16);
1873     else if(w==8 && h==8)
1874         return s->dsp.sse[1](NULL, src1, src2, stride, 8);
1875
1876     for(y=0; y<h; y++){
1877         for(x=0; x<w; x++){
1878             acc+= sq[src1[x + y*stride] - src2[x + y*stride]];
1879         }
1880     }
1881
1882     assert(acc>=0);
1883
1884     return acc;
1885 }
1886
1887 static int sse_mb(MpegEncContext *s){
1888     int w= 16;
1889     int h= 16;
1890
1891     if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
1892     if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
1893
1894     if(w==16 && h==16)
1895       if(s->avctx->mb_cmp == FF_CMP_NSSE){
1896         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)
1897                +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)
1898                +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);
1899       }else{
1900         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)
1901                +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)
1902                +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);
1903       }
1904     else
1905         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)
1906                +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)
1907                +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);
1908 }
1909
1910 static int pre_estimate_motion_thread(AVCodecContext *c, void *arg){
1911     MpegEncContext *s= arg;
1912
1913
1914     s->me.pre_pass=1;
1915     s->me.dia_size= s->avctx->pre_dia_size;
1916     s->first_slice_line=1;
1917     for(s->mb_y= s->end_mb_y-1; s->mb_y >= s->start_mb_y; s->mb_y--) {
1918         for(s->mb_x=s->mb_width-1; s->mb_x >=0 ;s->mb_x--) {
1919             ff_pre_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
1920         }
1921         s->first_slice_line=0;
1922     }
1923
1924     s->me.pre_pass=0;
1925
1926     return 0;
1927 }
1928
1929 static int estimate_motion_thread(AVCodecContext *c, void *arg){
1930     MpegEncContext *s= arg;
1931
1932     ff_check_alignment();
1933
1934     s->me.dia_size= s->avctx->dia_size;
1935     s->first_slice_line=1;
1936     for(s->mb_y= s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
1937         s->mb_x=0; //for block init below
1938         ff_init_block_index(s);
1939         for(s->mb_x=0; s->mb_x < s->mb_width; s->mb_x++) {
1940             s->block_index[0]+=2;
1941             s->block_index[1]+=2;
1942             s->block_index[2]+=2;
1943             s->block_index[3]+=2;
1944
1945             /* compute motion vector & mb_type and store in context */
1946             if(s->pict_type==B_TYPE)
1947                 ff_estimate_b_frame_motion(s, s->mb_x, s->mb_y);
1948             else
1949                 ff_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
1950         }
1951         s->first_slice_line=0;
1952     }
1953     return 0;
1954 }
1955
1956 static int mb_var_thread(AVCodecContext *c, void *arg){
1957     MpegEncContext *s= arg;
1958     int mb_x, mb_y;
1959
1960     ff_check_alignment();
1961
1962     for(mb_y=s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
1963         for(mb_x=0; mb_x < s->mb_width; mb_x++) {
1964             int xx = mb_x * 16;
1965             int yy = mb_y * 16;
1966             uint8_t *pix = s->new_picture.data[0] + (yy * s->linesize) + xx;
1967             int varc;
1968             int sum = s->dsp.pix_sum(pix, s->linesize);
1969
1970             varc = (s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)(sum*sum))>>8) + 500 + 128)>>8;
1971
1972             s->current_picture.mb_var [s->mb_stride * mb_y + mb_x] = varc;
1973             s->current_picture.mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8;
1974             s->me.mb_var_sum_temp    += varc;
1975         }
1976     }
1977     return 0;
1978 }
1979
1980 static void write_slice_end(MpegEncContext *s){
1981     if(ENABLE_MPEG4_ENCODER && s->codec_id==CODEC_ID_MPEG4){
1982         if(s->partitioned_frame){
1983             ff_mpeg4_merge_partitions(s);
1984         }
1985
1986         ff_mpeg4_stuffing(&s->pb);
1987     }else if(ENABLE_MJPEG_ENCODER && s->out_format == FMT_MJPEG){
1988         ff_mjpeg_encode_stuffing(&s->pb);
1989     }
1990
1991     align_put_bits(&s->pb);
1992     flush_put_bits(&s->pb);
1993
1994     if((s->flags&CODEC_FLAG_PASS1) && !s->partitioned_frame)
1995         s->misc_bits+= get_bits_diff(s);
1996 }
1997
1998 static int encode_thread(AVCodecContext *c, void *arg){
1999     MpegEncContext *s= arg;
2000     int mb_x, mb_y, pdif = 0;
2001     int i, j;
2002     MpegEncContext best_s, backup_s;
2003     uint8_t bit_buf[2][MAX_MB_BYTES];
2004     uint8_t bit_buf2[2][MAX_MB_BYTES];
2005     uint8_t bit_buf_tex[2][MAX_MB_BYTES];
2006     PutBitContext pb[2], pb2[2], tex_pb[2];
2007 //printf("%d->%d\n", s->resync_mb_y, s->end_mb_y);
2008
2009     ff_check_alignment();
2010
2011     for(i=0; i<2; i++){
2012         init_put_bits(&pb    [i], bit_buf    [i], MAX_MB_BYTES);
2013         init_put_bits(&pb2   [i], bit_buf2   [i], MAX_MB_BYTES);
2014         init_put_bits(&tex_pb[i], bit_buf_tex[i], MAX_MB_BYTES);
2015     }
2016
2017     s->last_bits= put_bits_count(&s->pb);
2018     s->mv_bits=0;
2019     s->misc_bits=0;
2020     s->i_tex_bits=0;
2021     s->p_tex_bits=0;
2022     s->i_count=0;
2023     s->f_count=0;
2024     s->b_count=0;
2025     s->skip_count=0;
2026
2027     for(i=0; i<3; i++){
2028         /* init last dc values */
2029         /* note: quant matrix value (8) is implied here */
2030         s->last_dc[i] = 128 << s->intra_dc_precision;
2031
2032         s->current_picture.error[i] = 0;
2033     }
2034     s->mb_skip_run = 0;
2035     memset(s->last_mv, 0, sizeof(s->last_mv));
2036
2037     s->last_mv_dir = 0;
2038
2039     switch(s->codec_id){
2040     case CODEC_ID_H263:
2041     case CODEC_ID_H263P:
2042     case CODEC_ID_FLV1:
2043         if (ENABLE_H263_ENCODER || ENABLE_H263P_ENCODER || ENABLE_FLV_ENCODER)
2044             s->gob_index = ff_h263_get_gob_height(s);
2045         break;
2046     case CODEC_ID_MPEG4:
2047         if(ENABLE_MPEG4_ENCODER && s->partitioned_frame)
2048             ff_mpeg4_init_partitions(s);
2049         break;
2050     }
2051
2052     s->resync_mb_x=0;
2053     s->resync_mb_y=0;
2054     s->first_slice_line = 1;
2055     s->ptr_lastgob = s->pb.buf;
2056     for(mb_y= s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
2057 //    printf("row %d at %X\n", s->mb_y, (int)s);
2058         s->mb_x=0;
2059         s->mb_y= mb_y;
2060
2061         ff_set_qscale(s, s->qscale);
2062         ff_init_block_index(s);
2063
2064         for(mb_x=0; mb_x < s->mb_width; mb_x++) {
2065             int xy= mb_y*s->mb_stride + mb_x; // removed const, H261 needs to adjust this
2066             int mb_type= s->mb_type[xy];
2067 //            int d;
2068             int dmin= INT_MAX;
2069             int dir;
2070
2071             if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < MAX_MB_BYTES){
2072                 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
2073                 return -1;
2074             }
2075             if(s->data_partitioning){
2076                 if(   s->pb2   .buf_end - s->pb2   .buf - (put_bits_count(&s->    pb2)>>3) < MAX_MB_BYTES
2077                    || s->tex_pb.buf_end - s->tex_pb.buf - (put_bits_count(&s->tex_pb )>>3) < MAX_MB_BYTES){
2078                     av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
2079                     return -1;
2080                 }
2081             }
2082
2083             s->mb_x = mb_x;
2084             s->mb_y = mb_y;  // moved into loop, can get changed by H.261
2085             ff_update_block_index(s);
2086
2087             if(ENABLE_H261_ENCODER && s->codec_id == CODEC_ID_H261){
2088                 ff_h261_reorder_mb_index(s);
2089                 xy= s->mb_y*s->mb_stride + s->mb_x;
2090                 mb_type= s->mb_type[xy];
2091             }
2092
2093             /* write gob / video packet header  */
2094             if(s->rtp_mode){
2095                 int current_packet_size, is_gob_start;
2096
2097                 current_packet_size= ((put_bits_count(&s->pb)+7)>>3) - (s->ptr_lastgob - s->pb.buf);
2098
2099                 is_gob_start= s->avctx->rtp_payload_size && current_packet_size >= s->avctx->rtp_payload_size && mb_y + mb_x>0;
2100
2101                 if(s->start_mb_y == mb_y && mb_y > 0 && mb_x==0) is_gob_start=1;
2102
2103                 switch(s->codec_id){
2104                 case CODEC_ID_H263:
2105                 case CODEC_ID_H263P:
2106                     if(!s->h263_slice_structured)
2107                         if(s->mb_x || s->mb_y%s->gob_index) is_gob_start=0;
2108                     break;
2109                 case CODEC_ID_MPEG2VIDEO:
2110                     if(s->mb_x==0 && s->mb_y!=0) is_gob_start=1;
2111                 case CODEC_ID_MPEG1VIDEO:
2112                     if(s->mb_skip_run) is_gob_start=0;
2113                     break;
2114                 }
2115
2116                 if(is_gob_start){
2117                     if(s->start_mb_y != mb_y || mb_x!=0){
2118                         write_slice_end(s);
2119
2120                         if(ENABLE_MPEG4_ENCODER && s->codec_id==CODEC_ID_MPEG4 && s->partitioned_frame){
2121                             ff_mpeg4_init_partitions(s);
2122                         }
2123                     }
2124
2125                     assert((put_bits_count(&s->pb)&7) == 0);
2126                     current_packet_size= pbBufPtr(&s->pb) - s->ptr_lastgob;
2127
2128                     if(s->avctx->error_rate && s->resync_mb_x + s->resync_mb_y > 0){
2129                         int r= put_bits_count(&s->pb)/8 + s->picture_number + 16 + s->mb_x + s->mb_y;
2130                         int d= 100 / s->avctx->error_rate;
2131                         if(r % d == 0){
2132                             current_packet_size=0;
2133 #ifndef ALT_BITSTREAM_WRITER
2134                             s->pb.buf_ptr= s->ptr_lastgob;
2135 #endif
2136                             assert(pbBufPtr(&s->pb) == s->ptr_lastgob);
2137                         }
2138                     }
2139
2140                     if (s->avctx->rtp_callback){
2141                         int number_mb = (mb_y - s->resync_mb_y)*s->mb_width + mb_x - s->resync_mb_x;
2142                         s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, current_packet_size, number_mb);
2143                     }
2144
2145                     switch(s->codec_id){
2146                     case CODEC_ID_MPEG4:
2147                         if (ENABLE_MPEG4_ENCODER) {
2148                             ff_mpeg4_encode_video_packet_header(s);
2149                             ff_mpeg4_clean_buffers(s);
2150                         }
2151                     break;
2152                     case CODEC_ID_MPEG1VIDEO:
2153                     case CODEC_ID_MPEG2VIDEO:
2154                         if (ENABLE_MPEG1VIDEO_ENCODER || ENABLE_MPEG2VIDEO_ENCODER) {
2155                             ff_mpeg1_encode_slice_header(s);
2156                             ff_mpeg1_clean_buffers(s);
2157                         }
2158                     break;
2159                     case CODEC_ID_H263:
2160                     case CODEC_ID_H263P:
2161                         if (ENABLE_H263_ENCODER || ENABLE_H263P_ENCODER)
2162                             h263_encode_gob_header(s, mb_y);
2163                     break;
2164                     }
2165
2166                     if(s->flags&CODEC_FLAG_PASS1){
2167                         int bits= put_bits_count(&s->pb);
2168                         s->misc_bits+= bits - s->last_bits;
2169                         s->last_bits= bits;
2170                     }
2171
2172                     s->ptr_lastgob += current_packet_size;
2173                     s->first_slice_line=1;
2174                     s->resync_mb_x=mb_x;
2175                     s->resync_mb_y=mb_y;
2176                 }
2177             }
2178
2179             if(  (s->resync_mb_x   == s->mb_x)
2180                && s->resync_mb_y+1 == s->mb_y){
2181                 s->first_slice_line=0;
2182             }
2183
2184             s->mb_skipped=0;
2185             s->dquant=0; //only for QP_RD
2186
2187             if(mb_type & (mb_type-1) || (s->flags & CODEC_FLAG_QP_RD)){ // more than 1 MB type possible or CODEC_FLAG_QP_RD
2188                 int next_block=0;
2189                 int pb_bits_count, pb2_bits_count, tex_pb_bits_count;
2190
2191                 copy_context_before_encode(&backup_s, s, -1);
2192                 backup_s.pb= s->pb;
2193                 best_s.data_partitioning= s->data_partitioning;
2194                 best_s.partitioned_frame= s->partitioned_frame;
2195                 if(s->data_partitioning){
2196                     backup_s.pb2= s->pb2;
2197                     backup_s.tex_pb= s->tex_pb;
2198                 }
2199
2200                 if(mb_type&CANDIDATE_MB_TYPE_INTER){
2201                     s->mv_dir = MV_DIR_FORWARD;
2202                     s->mv_type = MV_TYPE_16X16;
2203                     s->mb_intra= 0;
2204                     s->mv[0][0][0] = s->p_mv_table[xy][0];
2205                     s->mv[0][0][1] = s->p_mv_table[xy][1];
2206                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER, pb, pb2, tex_pb,
2207                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
2208                 }
2209                 if(mb_type&CANDIDATE_MB_TYPE_INTER_I){
2210                     s->mv_dir = MV_DIR_FORWARD;
2211                     s->mv_type = MV_TYPE_FIELD;
2212                     s->mb_intra= 0;
2213                     for(i=0; i<2; i++){
2214                         j= s->field_select[0][i] = s->p_field_select_table[i][xy];
2215                         s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
2216                         s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
2217                     }
2218                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER_I, pb, pb2, tex_pb,
2219                                  &dmin, &next_block, 0, 0);
2220                 }
2221                 if(mb_type&CANDIDATE_MB_TYPE_SKIPPED){
2222                     s->mv_dir = MV_DIR_FORWARD;
2223                     s->mv_type = MV_TYPE_16X16;
2224                     s->mb_intra= 0;
2225                     s->mv[0][0][0] = 0;
2226                     s->mv[0][0][1] = 0;
2227                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_SKIPPED, pb, pb2, tex_pb,
2228                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
2229                 }
2230                 if(mb_type&CANDIDATE_MB_TYPE_INTER4V){
2231                     s->mv_dir = MV_DIR_FORWARD;
2232                     s->mv_type = MV_TYPE_8X8;
2233                     s->mb_intra= 0;
2234                     for(i=0; i<4; i++){
2235                         s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
2236                         s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
2237                     }
2238                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER4V, pb, pb2, tex_pb,
2239                                  &dmin, &next_block, 0, 0);
2240                 }
2241                 if(mb_type&CANDIDATE_MB_TYPE_FORWARD){
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->b_forw_mv_table[xy][0];
2246                     s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
2247                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD, 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_BACKWARD){
2251                     s->mv_dir = MV_DIR_BACKWARD;
2252                     s->mv_type = MV_TYPE_16X16;
2253                     s->mb_intra= 0;
2254                     s->mv[1][0][0] = s->b_back_mv_table[xy][0];
2255                     s->mv[1][0][1] = s->b_back_mv_table[xy][1];
2256                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD, pb, pb2, tex_pb,
2257                                  &dmin, &next_block, s->mv[1][0][0], s->mv[1][0][1]);
2258                 }
2259                 if(mb_type&CANDIDATE_MB_TYPE_BIDIR){
2260                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2261                     s->mv_type = MV_TYPE_16X16;
2262                     s->mb_intra= 0;
2263                     s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
2264                     s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
2265                     s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
2266                     s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
2267                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR, pb, pb2, tex_pb,
2268                                  &dmin, &next_block, 0, 0);
2269                 }
2270                 if(mb_type&CANDIDATE_MB_TYPE_FORWARD_I){
2271                     s->mv_dir = MV_DIR_FORWARD;
2272                     s->mv_type = MV_TYPE_FIELD;
2273                     s->mb_intra= 0;
2274                     for(i=0; i<2; i++){
2275                         j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
2276                         s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
2277                         s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
2278                     }
2279                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD_I, pb, pb2, tex_pb,
2280                                  &dmin, &next_block, 0, 0);
2281                 }
2282                 if(mb_type&CANDIDATE_MB_TYPE_BACKWARD_I){
2283                     s->mv_dir = MV_DIR_BACKWARD;
2284                     s->mv_type = MV_TYPE_FIELD;
2285                     s->mb_intra= 0;
2286                     for(i=0; i<2; i++){
2287                         j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
2288                         s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
2289                         s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
2290                     }
2291                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD_I, pb, pb2, tex_pb,
2292                                  &dmin, &next_block, 0, 0);
2293                 }
2294                 if(mb_type&CANDIDATE_MB_TYPE_BIDIR_I){
2295                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2296                     s->mv_type = MV_TYPE_FIELD;
2297                     s->mb_intra= 0;
2298                     for(dir=0; dir<2; dir++){
2299                         for(i=0; i<2; i++){
2300                             j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
2301                             s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
2302                             s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
2303                         }
2304                     }
2305                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR_I, pb, pb2, tex_pb,
2306                                  &dmin, &next_block, 0, 0);
2307                 }
2308                 if(mb_type&CANDIDATE_MB_TYPE_INTRA){
2309                     s->mv_dir = 0;
2310                     s->mv_type = MV_TYPE_16X16;
2311                     s->mb_intra= 1;
2312                     s->mv[0][0][0] = 0;
2313                     s->mv[0][0][1] = 0;
2314                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTRA, pb, pb2, tex_pb,
2315                                  &dmin, &next_block, 0, 0);
2316                     if(s->h263_pred || s->h263_aic){
2317                         if(best_s.mb_intra)
2318                             s->mbintra_table[mb_x + mb_y*s->mb_stride]=1;
2319                         else
2320                             ff_clean_intra_table_entries(s); //old mode?
2321                     }
2322                 }
2323
2324                 if((s->flags & CODEC_FLAG_QP_RD) && dmin < INT_MAX){
2325                     if(best_s.mv_type==MV_TYPE_16X16){ //FIXME move 4mv after QPRD
2326                         const int last_qp= backup_s.qscale;
2327                         int qpi, qp, dc[6];
2328                         DCTELEM ac[6][16];
2329                         const int mvdir= (best_s.mv_dir&MV_DIR_BACKWARD) ? 1 : 0;
2330                         static const int dquant_tab[4]={-1,1,-2,2};
2331
2332                         assert(backup_s.dquant == 0);
2333
2334                         //FIXME intra
2335                         s->mv_dir= best_s.mv_dir;
2336                         s->mv_type = MV_TYPE_16X16;
2337                         s->mb_intra= best_s.mb_intra;
2338                         s->mv[0][0][0] = best_s.mv[0][0][0];
2339                         s->mv[0][0][1] = best_s.mv[0][0][1];
2340                         s->mv[1][0][0] = best_s.mv[1][0][0];
2341                         s->mv[1][0][1] = best_s.mv[1][0][1];
2342
2343                         qpi = s->pict_type == B_TYPE ? 2 : 0;
2344                         for(; qpi<4; qpi++){
2345                             int dquant= dquant_tab[qpi];
2346                             qp= last_qp + dquant;
2347                             if(qp < s->avctx->qmin || qp > s->avctx->qmax)
2348                                 continue;
2349                             backup_s.dquant= dquant;
2350                             if(s->mb_intra && s->dc_val[0]){
2351                                 for(i=0; i<6; i++){
2352                                     dc[i]= s->dc_val[0][ s->block_index[i] ];
2353                                     memcpy(ac[i], s->ac_val[0][s->block_index[i]], sizeof(DCTELEM)*16);
2354                                 }
2355                             }
2356
2357                             encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
2358                                          &dmin, &next_block, s->mv[mvdir][0][0], s->mv[mvdir][0][1]);
2359                             if(best_s.qscale != qp){
2360                                 if(s->mb_intra && s->dc_val[0]){
2361                                     for(i=0; i<6; i++){
2362                                         s->dc_val[0][ s->block_index[i] ]= dc[i];
2363                                         memcpy(s->ac_val[0][s->block_index[i]], ac[i], sizeof(DCTELEM)*16);
2364                                     }
2365                                 }
2366                             }
2367                         }
2368                     }
2369                 }
2370                 if(ENABLE_MPEG4_ENCODER && mb_type&CANDIDATE_MB_TYPE_DIRECT){
2371                     int mx= s->b_direct_mv_table[xy][0];
2372                     int my= s->b_direct_mv_table[xy][1];
2373
2374                     backup_s.dquant = 0;
2375                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
2376                     s->mb_intra= 0;
2377                     ff_mpeg4_set_direct_mv(s, mx, my);
2378                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
2379                                  &dmin, &next_block, mx, my);
2380                 }
2381                 if(ENABLE_MPEG4_ENCODER && mb_type&CANDIDATE_MB_TYPE_DIRECT0){
2382                     backup_s.dquant = 0;
2383                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
2384                     s->mb_intra= 0;
2385                     ff_mpeg4_set_direct_mv(s, 0, 0);
2386                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
2387                                  &dmin, &next_block, 0, 0);
2388                 }
2389                 if(!best_s.mb_intra && s->flags2&CODEC_FLAG2_SKIP_RD){
2390                     int coded=0;
2391                     for(i=0; i<6; i++)
2392                         coded |= s->block_last_index[i];
2393                     if(coded){
2394                         int mx,my;
2395                         memcpy(s->mv, best_s.mv, sizeof(s->mv));
2396                         if(ENABLE_MPEG4_ENCODER && best_s.mv_dir & MV_DIRECT){
2397                             mx=my=0; //FIXME find the one we actually used
2398                             ff_mpeg4_set_direct_mv(s, mx, my);
2399                         }else if(best_s.mv_dir&MV_DIR_BACKWARD){
2400                             mx= s->mv[1][0][0];
2401                             my= s->mv[1][0][1];
2402                         }else{
2403                             mx= s->mv[0][0][0];
2404                             my= s->mv[0][0][1];
2405                         }
2406
2407                         s->mv_dir= best_s.mv_dir;
2408                         s->mv_type = best_s.mv_type;
2409                         s->mb_intra= 0;
2410 /*                        s->mv[0][0][0] = best_s.mv[0][0][0];
2411                         s->mv[0][0][1] = best_s.mv[0][0][1];
2412                         s->mv[1][0][0] = best_s.mv[1][0][0];
2413                         s->mv[1][0][1] = best_s.mv[1][0][1];*/
2414                         backup_s.dquant= 0;
2415                         s->skipdct=1;
2416                         encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
2417                                         &dmin, &next_block, mx, my);
2418                         s->skipdct=0;
2419                     }
2420                 }
2421
2422                 s->current_picture.qscale_table[xy]= best_s.qscale;
2423
2424                 copy_context_after_encode(s, &best_s, -1);
2425
2426                 pb_bits_count= put_bits_count(&s->pb);
2427                 flush_put_bits(&s->pb);
2428                 ff_copy_bits(&backup_s.pb, bit_buf[next_block^1], pb_bits_count);
2429                 s->pb= backup_s.pb;
2430
2431                 if(s->data_partitioning){
2432                     pb2_bits_count= put_bits_count(&s->pb2);
2433                     flush_put_bits(&s->pb2);
2434                     ff_copy_bits(&backup_s.pb2, bit_buf2[next_block^1], pb2_bits_count);
2435                     s->pb2= backup_s.pb2;
2436
2437                     tex_pb_bits_count= put_bits_count(&s->tex_pb);
2438                     flush_put_bits(&s->tex_pb);
2439                     ff_copy_bits(&backup_s.tex_pb, bit_buf_tex[next_block^1], tex_pb_bits_count);
2440                     s->tex_pb= backup_s.tex_pb;
2441                 }
2442                 s->last_bits= put_bits_count(&s->pb);
2443
2444                 if (ENABLE_ANY_H263_ENCODER &&
2445                     s->out_format == FMT_H263 && s->pict_type!=B_TYPE)
2446                     ff_h263_update_motion_val(s);
2447
2448                 if(next_block==0){ //FIXME 16 vs linesize16
2449                     s->dsp.put_pixels_tab[0][0](s->dest[0], s->rd_scratchpad                     , s->linesize  ,16);
2450                     s->dsp.put_pixels_tab[1][0](s->dest[1], s->rd_scratchpad + 16*s->linesize    , s->uvlinesize, 8);
2451                     s->dsp.put_pixels_tab[1][0](s->dest[2], s->rd_scratchpad + 16*s->linesize + 8, s->uvlinesize, 8);
2452                 }
2453
2454                 if(s->avctx->mb_decision == FF_MB_DECISION_BITS)
2455                     MPV_decode_mb(s, s->block);
2456             } else {
2457                 int motion_x = 0, motion_y = 0;
2458                 s->mv_type=MV_TYPE_16X16;
2459                 // only one MB-Type possible
2460
2461                 switch(mb_type){
2462                 case CANDIDATE_MB_TYPE_INTRA:
2463                     s->mv_dir = 0;
2464                     s->mb_intra= 1;
2465                     motion_x= s->mv[0][0][0] = 0;
2466                     motion_y= s->mv[0][0][1] = 0;
2467                     break;
2468                 case CANDIDATE_MB_TYPE_INTER:
2469                     s->mv_dir = MV_DIR_FORWARD;
2470                     s->mb_intra= 0;
2471                     motion_x= s->mv[0][0][0] = s->p_mv_table[xy][0];
2472                     motion_y= s->mv[0][0][1] = s->p_mv_table[xy][1];
2473                     break;
2474                 case CANDIDATE_MB_TYPE_INTER_I:
2475                     s->mv_dir = MV_DIR_FORWARD;
2476                     s->mv_type = MV_TYPE_FIELD;
2477                     s->mb_intra= 0;
2478                     for(i=0; i<2; i++){
2479                         j= s->field_select[0][i] = s->p_field_select_table[i][xy];
2480                         s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
2481                         s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
2482                     }
2483                     break;
2484                 case CANDIDATE_MB_TYPE_INTER4V:
2485                     s->mv_dir = MV_DIR_FORWARD;
2486                     s->mv_type = MV_TYPE_8X8;
2487                     s->mb_intra= 0;
2488                     for(i=0; i<4; i++){
2489                         s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
2490                         s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
2491                     }
2492                     break;
2493                 case CANDIDATE_MB_TYPE_DIRECT:
2494                     if (ENABLE_MPEG4_ENCODER) {
2495                         s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD|MV_DIRECT;
2496                         s->mb_intra= 0;
2497                         motion_x=s->b_direct_mv_table[xy][0];
2498                         motion_y=s->b_direct_mv_table[xy][1];
2499                         ff_mpeg4_set_direct_mv(s, motion_x, motion_y);
2500                     }
2501                     break;
2502                 case CANDIDATE_MB_TYPE_DIRECT0:
2503                     if (ENABLE_MPEG4_ENCODER) {
2504                         s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD|MV_DIRECT;
2505                         s->mb_intra= 0;
2506                         ff_mpeg4_set_direct_mv(s, 0, 0);
2507                     }
2508                     break;
2509                 case CANDIDATE_MB_TYPE_BIDIR:
2510                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2511                     s->mb_intra= 0;
2512                     s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
2513                     s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
2514                     s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
2515                     s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
2516                     break;
2517                 case CANDIDATE_MB_TYPE_BACKWARD:
2518                     s->mv_dir = MV_DIR_BACKWARD;
2519                     s->mb_intra= 0;
2520                     motion_x= s->mv[1][0][0] = s->b_back_mv_table[xy][0];
2521                     motion_y= s->mv[1][0][1] = s->b_back_mv_table[xy][1];
2522                     break;
2523                 case CANDIDATE_MB_TYPE_FORWARD:
2524                     s->mv_dir = MV_DIR_FORWARD;
2525                     s->mb_intra= 0;
2526                     motion_x= s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
2527                     motion_y= s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
2528 //                    printf(" %d %d ", motion_x, motion_y);
2529                     break;
2530                 case CANDIDATE_MB_TYPE_FORWARD_I:
2531                     s->mv_dir = MV_DIR_FORWARD;
2532                     s->mv_type = MV_TYPE_FIELD;
2533                     s->mb_intra= 0;
2534                     for(i=0; i<2; i++){
2535                         j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
2536                         s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
2537                         s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
2538                     }
2539                     break;
2540                 case CANDIDATE_MB_TYPE_BACKWARD_I:
2541                     s->mv_dir = MV_DIR_BACKWARD;
2542                     s->mv_type = MV_TYPE_FIELD;
2543                     s->mb_intra= 0;
2544                     for(i=0; i<2; i++){
2545                         j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
2546                         s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
2547                         s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
2548                     }
2549                     break;
2550                 case CANDIDATE_MB_TYPE_BIDIR_I:
2551                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2552                     s->mv_type = MV_TYPE_FIELD;
2553                     s->mb_intra= 0;
2554                     for(dir=0; dir<2; dir++){
2555                         for(i=0; i<2; i++){
2556                             j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
2557                             s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
2558                             s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
2559                         }
2560                     }
2561                     break;
2562                 default:
2563                     av_log(s->avctx, AV_LOG_ERROR, "illegal MB type\n");
2564                 }
2565
2566                 encode_mb(s, motion_x, motion_y);
2567
2568                 // RAL: Update last macroblock type
2569                 s->last_mv_dir = s->mv_dir;
2570
2571                 if (ENABLE_ANY_H263_ENCODER &&
2572                     s->out_format == FMT_H263 && s->pict_type!=B_TYPE)
2573                     ff_h263_update_motion_val(s);
2574
2575                 MPV_decode_mb(s, s->block);
2576             }
2577
2578             /* clean the MV table in IPS frames for direct mode in B frames */
2579             if(s->mb_intra /* && I,P,S_TYPE */){
2580                 s->p_mv_table[xy][0]=0;
2581                 s->p_mv_table[xy][1]=0;
2582             }
2583
2584             if(s->flags&CODEC_FLAG_PSNR){
2585                 int w= 16;
2586                 int h= 16;
2587
2588                 if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
2589                 if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
2590
2591                 s->current_picture.error[0] += sse(
2592                     s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16,
2593                     s->dest[0], w, h, s->linesize);
2594                 s->current_picture.error[1] += sse(
2595                     s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,
2596                     s->dest[1], w>>1, h>>1, s->uvlinesize);
2597                 s->current_picture.error[2] += sse(
2598                     s, s->new_picture    .data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,
2599                     s->dest[2], w>>1, h>>1, s->uvlinesize);
2600             }
2601             if(s->loop_filter){
2602                 if(ENABLE_ANY_H263_ENCODER && s->out_format == FMT_H263)
2603                     ff_h263_loop_filter(s);
2604             }
2605 //printf("MB %d %d bits\n", s->mb_x+s->mb_y*s->mb_stride, put_bits_count(&s->pb));
2606         }
2607     }
2608
2609     //not beautiful here but we must write it before flushing so it has to be here
2610     if (ENABLE_MSMPEG4_ENCODER && s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type == I_TYPE)
2611         msmpeg4_encode_ext_header(s);
2612
2613     write_slice_end(s);
2614
2615     /* Send the last GOB if RTP */
2616     if (s->avctx->rtp_callback) {
2617         int number_mb = (mb_y - s->resync_mb_y)*s->mb_width - s->resync_mb_x;
2618         pdif = pbBufPtr(&s->pb) - s->ptr_lastgob;
2619         /* Call the RTP callback to send the last GOB */
2620         emms_c();
2621         s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, pdif, number_mb);
2622     }
2623
2624     return 0;
2625 }
2626
2627 #define MERGE(field) dst->field += src->field; src->field=0
2628 static void merge_context_after_me(MpegEncContext *dst, MpegEncContext *src){
2629     MERGE(me.scene_change_score);
2630     MERGE(me.mc_mb_var_sum_temp);
2631     MERGE(me.mb_var_sum_temp);
2632 }
2633
2634 static void merge_context_after_encode(MpegEncContext *dst, MpegEncContext *src){
2635     int i;
2636
2637     MERGE(dct_count[0]); //note, the other dct vars are not part of the context
2638     MERGE(dct_count[1]);
2639     MERGE(mv_bits);
2640     MERGE(i_tex_bits);
2641     MERGE(p_tex_bits);
2642     MERGE(i_count);
2643     MERGE(f_count);
2644     MERGE(b_count);
2645     MERGE(skip_count);
2646     MERGE(misc_bits);
2647     MERGE(error_count);
2648     MERGE(padding_bug_score);
2649     MERGE(current_picture.error[0]);
2650     MERGE(current_picture.error[1]);
2651     MERGE(current_picture.error[2]);
2652
2653     if(dst->avctx->noise_reduction){
2654         for(i=0; i<64; i++){
2655             MERGE(dct_error_sum[0][i]);
2656             MERGE(dct_error_sum[1][i]);
2657         }
2658     }
2659
2660     assert(put_bits_count(&src->pb) % 8 ==0);
2661     assert(put_bits_count(&dst->pb) % 8 ==0);
2662     ff_copy_bits(&dst->pb, src->pb.buf, put_bits_count(&src->pb));
2663     flush_put_bits(&dst->pb);
2664 }
2665
2666 static int estimate_qp(MpegEncContext *s, int dry_run){
2667     if (s->next_lambda){
2668         s->current_picture_ptr->quality=
2669         s->current_picture.quality = s->next_lambda;
2670         if(!dry_run) s->next_lambda= 0;
2671     } else if (!s->fixed_qscale) {
2672         s->current_picture_ptr->quality=
2673         s->current_picture.quality = ff_rate_estimate_qscale(s, dry_run);
2674         if (s->current_picture.quality < 0)
2675             return -1;
2676     }
2677
2678     if(s->adaptive_quant){
2679         switch(s->codec_id){
2680         case CODEC_ID_MPEG4:
2681             if (ENABLE_MPEG4_ENCODER)
2682                 ff_clean_mpeg4_qscales(s);
2683             break;
2684         case CODEC_ID_H263:
2685         case CODEC_ID_H263P:
2686         case CODEC_ID_FLV1:
2687             if (ENABLE_H263_ENCODER||ENABLE_H263P_ENCODER||ENABLE_FLV_ENCODER)
2688                 ff_clean_h263_qscales(s);
2689             break;
2690         }
2691
2692         s->lambda= s->lambda_table[0];
2693         //FIXME broken
2694     }else
2695         s->lambda= s->current_picture.quality;
2696 //printf("%d %d\n", s->avctx->global_quality, s->current_picture.quality);
2697     update_qscale(s);
2698     return 0;
2699 }
2700
2701 /* must be called before writing the header */
2702 static void set_frame_distances(MpegEncContext * s){
2703     assert(s->current_picture_ptr->pts != AV_NOPTS_VALUE);
2704     s->time= s->current_picture_ptr->pts*s->avctx->time_base.num;
2705
2706     if(s->pict_type==B_TYPE){
2707         s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
2708         assert(s->pb_time > 0 && s->pb_time < s->pp_time);
2709     }else{
2710         s->pp_time= s->time - s->last_non_b_time;
2711         s->last_non_b_time= s->time;
2712         assert(s->picture_number==0 || s->pp_time > 0);
2713     }
2714 }
2715
2716 static int encode_picture(MpegEncContext *s, int picture_number)
2717 {
2718     int i;
2719     int bits;
2720
2721     s->picture_number = picture_number;
2722
2723     /* Reset the average MB variance */
2724     s->me.mb_var_sum_temp    =
2725     s->me.mc_mb_var_sum_temp = 0;
2726
2727     /* we need to initialize some time vars before we can encode b-frames */
2728     // RAL: Condition added for MPEG1VIDEO
2729     if (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO || (s->h263_pred && !s->h263_msmpeg4))
2730         set_frame_distances(s);
2731     if(ENABLE_MPEG4_ENCODER && s->codec_id == CODEC_ID_MPEG4)
2732         ff_set_mpeg4_time(s);
2733
2734     s->me.scene_change_score=0;
2735
2736 //    s->lambda= s->current_picture_ptr->quality; //FIXME qscale / ... stuff for ME ratedistoration
2737
2738     if(s->pict_type==I_TYPE){
2739         if(s->msmpeg4_version >= 3) s->no_rounding=1;
2740         else                        s->no_rounding=0;
2741     }else if(s->pict_type!=B_TYPE){
2742         if(s->flipflop_rounding || s->codec_id == CODEC_ID_H263P || s->codec_id == CODEC_ID_MPEG4)
2743             s->no_rounding ^= 1;
2744     }
2745
2746     if(s->flags & CODEC_FLAG_PASS2){
2747         if (estimate_qp(s,1) < 0)
2748             return -1;
2749         ff_get_2pass_fcode(s);
2750     }else if(!(s->flags & CODEC_FLAG_QSCALE)){
2751         if(s->pict_type==B_TYPE)
2752             s->lambda= s->last_lambda_for[s->pict_type];
2753         else
2754             s->lambda= s->last_lambda_for[s->last_non_b_pict_type];
2755         update_qscale(s);
2756     }
2757
2758     s->mb_intra=0; //for the rate distortion & bit compare functions
2759     for(i=1; i<s->avctx->thread_count; i++){
2760         ff_update_duplicate_context(s->thread_context[i], s);
2761     }
2762
2763     ff_init_me(s);
2764
2765     /* Estimate motion for every MB */
2766     if(s->pict_type != I_TYPE){
2767         s->lambda = (s->lambda * s->avctx->me_penalty_compensation + 128)>>8;
2768         s->lambda2= (s->lambda2* (int64_t)s->avctx->me_penalty_compensation + 128)>>8;
2769         if(s->pict_type != B_TYPE && s->avctx->me_threshold==0){
2770             if((s->avctx->pre_me && s->last_non_b_pict_type==I_TYPE) || s->avctx->pre_me==2){
2771                 s->avctx->execute(s->avctx, pre_estimate_motion_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
2772             }
2773         }
2774
2775         s->avctx->execute(s->avctx, estimate_motion_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
2776     }else /* if(s->pict_type == I_TYPE) */{
2777         /* I-Frame */
2778         for(i=0; i<s->mb_stride*s->mb_height; i++)
2779             s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
2780
2781         if(!s->fixed_qscale){
2782             /* finding spatial complexity for I-frame rate control */
2783             s->avctx->execute(s->avctx, mb_var_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
2784         }
2785     }
2786     for(i=1; i<s->avctx->thread_count; i++){
2787         merge_context_after_me(s, s->thread_context[i]);
2788     }
2789     s->current_picture.mc_mb_var_sum= s->current_picture_ptr->mc_mb_var_sum= s->me.mc_mb_var_sum_temp;
2790     s->current_picture.   mb_var_sum= s->current_picture_ptr->   mb_var_sum= s->me.   mb_var_sum_temp;
2791     emms_c();
2792
2793     if(s->me.scene_change_score > s->avctx->scenechange_threshold && s->pict_type == P_TYPE){
2794         s->pict_type= I_TYPE;
2795         for(i=0; i<s->mb_stride*s->mb_height; i++)
2796             s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
2797 //printf("Scene change detected, encoding as I Frame %d %d\n", s->current_picture.mb_var_sum, s->current_picture.mc_mb_var_sum);
2798     }
2799
2800     if(!s->umvplus){
2801         if(s->pict_type==P_TYPE || s->pict_type==S_TYPE) {
2802             s->f_code= ff_get_best_fcode(s, s->p_mv_table, CANDIDATE_MB_TYPE_INTER);
2803
2804             if(s->flags & CODEC_FLAG_INTERLACED_ME){
2805                 int a,b;
2806                 a= ff_get_best_fcode(s, s->p_field_mv_table[0][0], CANDIDATE_MB_TYPE_INTER_I); //FIXME field_select
2807                 b= ff_get_best_fcode(s, s->p_field_mv_table[1][1], CANDIDATE_MB_TYPE_INTER_I);
2808                 s->f_code= FFMAX(s->f_code, FFMAX(a,b));
2809             }
2810
2811             ff_fix_long_p_mvs(s);
2812             ff_fix_long_mvs(s, NULL, 0, s->p_mv_table, s->f_code, CANDIDATE_MB_TYPE_INTER, 0);
2813             if(s->flags & CODEC_FLAG_INTERLACED_ME){
2814                 int j;
2815                 for(i=0; i<2; i++){
2816                     for(j=0; j<2; j++)
2817                         ff_fix_long_mvs(s, s->p_field_select_table[i], j,
2818                                         s->p_field_mv_table[i][j], s->f_code, CANDIDATE_MB_TYPE_INTER_I, 0);
2819                 }
2820             }
2821         }
2822
2823         if(s->pict_type==B_TYPE){
2824             int a, b;
2825
2826             a = ff_get_best_fcode(s, s->b_forw_mv_table, CANDIDATE_MB_TYPE_FORWARD);
2827             b = ff_get_best_fcode(s, s->b_bidir_forw_mv_table, CANDIDATE_MB_TYPE_BIDIR);
2828             s->f_code = FFMAX(a, b);
2829
2830             a = ff_get_best_fcode(s, s->b_back_mv_table, CANDIDATE_MB_TYPE_BACKWARD);
2831             b = ff_get_best_fcode(s, s->b_bidir_back_mv_table, CANDIDATE_MB_TYPE_BIDIR);
2832             s->b_code = FFMAX(a, b);
2833
2834             ff_fix_long_mvs(s, NULL, 0, s->b_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_FORWARD, 1);
2835             ff_fix_long_mvs(s, NULL, 0, s->b_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BACKWARD, 1);
2836             ff_fix_long_mvs(s, NULL, 0, s->b_bidir_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_BIDIR, 1);
2837             ff_fix_long_mvs(s, NULL, 0, s->b_bidir_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BIDIR, 1);
2838             if(s->flags & CODEC_FLAG_INTERLACED_ME){
2839                 int dir, j;
2840                 for(dir=0; dir<2; dir++){
2841                     for(i=0; i<2; i++){
2842                         for(j=0; j<2; j++){
2843                             int type= dir ? (CANDIDATE_MB_TYPE_BACKWARD_I|CANDIDATE_MB_TYPE_BIDIR_I)
2844                                           : (CANDIDATE_MB_TYPE_FORWARD_I |CANDIDATE_MB_TYPE_BIDIR_I);
2845                             ff_fix_long_mvs(s, s->b_field_select_table[dir][i], j,
2846                                             s->b_field_mv_table[dir][i][j], dir ? s->b_code : s->f_code, type, 1);
2847                         }
2848                     }
2849                 }
2850             }
2851         }
2852     }
2853
2854     if (estimate_qp(s, 0) < 0)
2855         return -1;
2856
2857     if(s->qscale < 3 && s->max_qcoeff<=128 && s->pict_type==I_TYPE && !(s->flags & CODEC_FLAG_QSCALE))
2858         s->qscale= 3; //reduce clipping problems
2859
2860     if (s->out_format == FMT_MJPEG) {
2861         /* for mjpeg, we do include qscale in the matrix */
2862         s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0];
2863         for(i=1;i<64;i++){
2864             int j= s->dsp.idct_permutation[i];
2865
2866             s->intra_matrix[j] = av_clip_uint8((ff_mpeg1_default_intra_matrix[i] * s->qscale) >> 3);
2867         }
2868         ff_convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
2869                        s->intra_matrix, s->intra_quant_bias, 8, 8, 1);
2870         s->qscale= 8;
2871     }
2872
2873     //FIXME var duplication
2874     s->current_picture_ptr->key_frame=
2875     s->current_picture.key_frame= s->pict_type == I_TYPE; //FIXME pic_ptr
2876     s->current_picture_ptr->pict_type=
2877     s->current_picture.pict_type= s->pict_type;
2878
2879     if(s->current_picture.key_frame)
2880         s->picture_in_gop_number=0;
2881
2882     s->last_bits= put_bits_count(&s->pb);
2883     switch(s->out_format) {
2884     case FMT_MJPEG:
2885         if (ENABLE_MJPEG_ENCODER)
2886             ff_mjpeg_encode_picture_header(s);
2887         break;
2888     case FMT_H261:
2889         if (ENABLE_H261_ENCODER)
2890             ff_h261_encode_picture_header(s, picture_number);
2891         break;
2892     case FMT_H263:
2893         if (ENABLE_WMV2_ENCODER && s->codec_id == CODEC_ID_WMV2)
2894             ff_wmv2_encode_picture_header(s, picture_number);
2895         else if (ENABLE_MSMPEG4_ENCODER && s->h263_msmpeg4)
2896             msmpeg4_encode_picture_header(s, picture_number);
2897         else if (ENABLE_MPEG4_ENCODER && s->h263_pred)
2898             mpeg4_encode_picture_header(s, picture_number);
2899         else if (ENABLE_RV10_ENCODER && s->codec_id == CODEC_ID_RV10)
2900             rv10_encode_picture_header(s, picture_number);
2901         else if (ENABLE_RV20_ENCODER && s->codec_id == CODEC_ID_RV20)
2902             rv20_encode_picture_header(s, picture_number);
2903         else if (ENABLE_FLV_ENCODER && s->codec_id == CODEC_ID_FLV1)
2904             ff_flv_encode_picture_header(s, picture_number);
2905         else if (ENABLE_ANY_H263_ENCODER)
2906             h263_encode_picture_header(s, picture_number);
2907         break;
2908     case FMT_MPEG1:
2909         if (ENABLE_MPEG1VIDEO_ENCODER || ENABLE_MPEG2VIDEO_ENCODER)
2910             mpeg1_encode_picture_header(s, picture_number);
2911         break;
2912     case FMT_H264:
2913         break;
2914     default:
2915         assert(0);
2916     }
2917     bits= put_bits_count(&s->pb);
2918     s->header_bits= bits - s->last_bits;
2919
2920     for(i=1; i<s->avctx->thread_count; i++){
2921         update_duplicate_context_after_me(s->thread_context[i], s);
2922     }
2923     s->avctx->execute(s->avctx, encode_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
2924     for(i=1; i<s->avctx->thread_count; i++){
2925         merge_context_after_encode(s, s->thread_context[i]);
2926     }
2927     emms_c();
2928     return 0;
2929 }
2930
2931 void  denoise_dct_c(MpegEncContext *s, DCTELEM *block){
2932     const int intra= s->mb_intra;
2933     int i;
2934
2935     s->dct_count[intra]++;
2936
2937     for(i=0; i<64; i++){
2938         int level= block[i];
2939
2940         if(level){
2941             if(level>0){
2942                 s->dct_error_sum[intra][i] += level;
2943                 level -= s->dct_offset[intra][i];
2944                 if(level<0) level=0;
2945             }else{
2946                 s->dct_error_sum[intra][i] -= level;
2947                 level += s->dct_offset[intra][i];
2948                 if(level>0) level=0;
2949             }
2950             block[i]= level;
2951         }
2952     }
2953 }
2954
2955 int dct_quantize_trellis_c(MpegEncContext *s,
2956                         DCTELEM *block, int n,
2957                         int qscale, int *overflow){
2958     const int *qmat;
2959     const uint8_t *scantable= s->intra_scantable.scantable;
2960     const uint8_t *perm_scantable= s->intra_scantable.permutated;
2961     int max=0;
2962     unsigned int threshold1, threshold2;
2963     int bias=0;
2964     int run_tab[65];
2965     int level_tab[65];
2966     int score_tab[65];
2967     int survivor[65];
2968     int survivor_count;
2969     int last_run=0;
2970     int last_level=0;
2971     int last_score= 0;
2972     int last_i;
2973     int coeff[2][64];
2974     int coeff_count[64];
2975     int qmul, qadd, start_i, last_non_zero, i, dc;
2976     const int esc_length= s->ac_esc_length;
2977     uint8_t * length;
2978     uint8_t * last_length;
2979     const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
2980
2981     s->dsp.fdct (block);
2982
2983     if(s->dct_error_sum)
2984         s->denoise_dct(s, block);
2985     qmul= qscale*16;
2986     qadd= ((qscale-1)|1)*8;
2987
2988     if (s->mb_intra) {
2989         int q;
2990         if (!s->h263_aic) {
2991             if (n < 4)
2992                 q = s->y_dc_scale;
2993             else
2994                 q = s->c_dc_scale;
2995             q = q << 3;
2996         } else{
2997             /* For AIC we skip quant/dequant of INTRADC */
2998             q = 1 << 3;
2999             qadd=0;
3000         }
3001
3002         /* note: block[0] is assumed to be positive */
3003         block[0] = (block[0] + (q >> 1)) / q;
3004         start_i = 1;
3005         last_non_zero = 0;
3006         qmat = s->q_intra_matrix[qscale];
3007         if(s->mpeg_quant || s->out_format == FMT_MPEG1)
3008             bias= 1<<(QMAT_SHIFT-1);
3009         length     = s->intra_ac_vlc_length;
3010         last_length= s->intra_ac_vlc_last_length;
3011     } else {
3012         start_i = 0;
3013         last_non_zero = -1;
3014         qmat = s->q_inter_matrix[qscale];
3015         length     = s->inter_ac_vlc_length;
3016         last_length= s->inter_ac_vlc_last_length;
3017     }
3018     last_i= start_i;
3019
3020     threshold1= (1<<QMAT_SHIFT) - bias - 1;
3021     threshold2= (threshold1<<1);
3022
3023     for(i=63; i>=start_i; i--) {
3024         const int j = scantable[i];
3025         int level = block[j] * qmat[j];
3026
3027         if(((unsigned)(level+threshold1))>threshold2){
3028             last_non_zero = i;
3029             break;
3030         }
3031     }
3032
3033     for(i=start_i; i<=last_non_zero; i++) {
3034         const int j = scantable[i];
3035         int level = block[j] * qmat[j];
3036
3037 //        if(   bias+level >= (1<<(QMAT_SHIFT - 3))
3038 //           || bias-level >= (1<<(QMAT_SHIFT - 3))){
3039         if(((unsigned)(level+threshold1))>threshold2){
3040             if(level>0){
3041                 level= (bias + level)>>QMAT_SHIFT;
3042                 coeff[0][i]= level;
3043                 coeff[1][i]= level-1;
3044 //                coeff[2][k]= level-2;
3045             }else{
3046                 level= (bias - level)>>QMAT_SHIFT;
3047                 coeff[0][i]= -level;
3048                 coeff[1][i]= -level+1;
3049 //                coeff[2][k]= -level+2;
3050             }
3051             coeff_count[i]= FFMIN(level, 2);
3052             assert(coeff_count[i]);
3053             max |=level;
3054         }else{
3055             coeff[0][i]= (level>>31)|1;
3056             coeff_count[i]= 1;
3057         }
3058     }
3059
3060     *overflow= s->max_qcoeff < max; //overflow might have happened
3061
3062     if(last_non_zero < start_i){
3063         memset(block + start_i, 0, (64-start_i)*sizeof(DCTELEM));
3064         return last_non_zero;
3065     }
3066
3067     score_tab[start_i]= 0;
3068     survivor[0]= start_i;
3069     survivor_count= 1;
3070
3071     for(i=start_i; i<=last_non_zero; i++){
3072         int level_index, j;
3073         const int dct_coeff= FFABS(block[ scantable[i] ]);
3074         const int zero_distoration= dct_coeff*dct_coeff;
3075         int best_score=256*256*256*120;
3076         for(level_index=0; level_index < coeff_count[i]; level_index++){
3077             int distoration;
3078             int level= coeff[level_index][i];
3079             const int alevel= FFABS(level);
3080             int unquant_coeff;
3081
3082             assert(level);
3083
3084             if(s->out_format == FMT_H263){
3085                 unquant_coeff= alevel*qmul + qadd;
3086             }else{ //MPEG1
3087                 j= s->dsp.idct_permutation[ scantable[i] ]; //FIXME optimize
3088                 if(s->mb_intra){
3089                         unquant_coeff = (int)(  alevel  * qscale * s->intra_matrix[j]) >> 3;
3090                         unquant_coeff =   (unquant_coeff - 1) | 1;
3091                 }else{
3092                         unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[j])) >> 4;
3093                         unquant_coeff =   (unquant_coeff - 1) | 1;
3094                 }
3095                 unquant_coeff<<= 3;
3096             }
3097
3098             distoration= (unquant_coeff - dct_coeff) * (unquant_coeff - dct_coeff) - zero_distoration;
3099             level+=64;
3100             if((level&(~127)) == 0){
3101                 for(j=survivor_count-1; j>=0; j--){
3102                     int run= i - survivor[j];
3103                     int score= distoration + length[UNI_AC_ENC_INDEX(run, level)]*lambda;
3104                     score += score_tab[i-run];
3105
3106                     if(score < best_score){
3107                         best_score= score;
3108                         run_tab[i+1]= run;
3109                         level_tab[i+1]= level-64;
3110                     }
3111                 }
3112
3113                 if(s->out_format == FMT_H263){
3114                     for(j=survivor_count-1; j>=0; j--){
3115                         int run= i - survivor[j];
3116                         int score= distoration + last_length[UNI_AC_ENC_INDEX(run, level)]*lambda;
3117                         score += score_tab[i-run];
3118                         if(score < last_score){
3119                             last_score= score;
3120                             last_run= run;
3121                             last_level= level-64;
3122                             last_i= i+1;
3123                         }
3124                     }
3125                 }
3126             }else{
3127                 distoration += esc_length*lambda;
3128                 for(j=survivor_count-1; j>=0; j--){
3129                     int run= i - survivor[j];
3130                     int score= distoration + score_tab[i-run];
3131
3132                     if(score < best_score){
3133                         best_score= score;
3134                         run_tab[i+1]= run;
3135                         level_tab[i+1]= level-64;
3136                     }
3137                 }
3138
3139                 if(s->out_format == FMT_H263){
3140                   for(j=survivor_count-1; j>=0; j--){
3141                         int run= i - survivor[j];
3142                         int score= distoration + score_tab[i-run];
3143                         if(score < last_score){
3144                             last_score= score;
3145                             last_run= run;
3146                             last_level= level-64;
3147                             last_i= i+1;
3148                         }
3149                     }
3150                 }
3151             }
3152         }
3153
3154         score_tab[i+1]= best_score;
3155
3156         //Note: there is a vlc code in mpeg4 which is 1 bit shorter then another one with a shorter run and the same level
3157         if(last_non_zero <= 27){
3158             for(; survivor_count; survivor_count--){
3159                 if(score_tab[ survivor[survivor_count-1] ] <= best_score)
3160                     break;
3161             }
3162         }else{
3163             for(; survivor_count; survivor_count--){
3164                 if(score_tab[ survivor[survivor_count-1] ] <= best_score + lambda)
3165                     break;
3166             }
3167         }
3168
3169         survivor[ survivor_count++ ]= i+1;
3170     }
3171
3172     if(s->out_format != FMT_H263){
3173         last_score= 256*256*256*120;
3174         for(i= survivor[0]; i<=last_non_zero + 1; i++){
3175             int score= score_tab[i];
3176             if(i) score += lambda*2; //FIXME exacter?
3177
3178             if(score < last_score){
3179                 last_score= score;
3180                 last_i= i;
3181                 last_level= level_tab[i];
3182                 last_run= run_tab[i];
3183             }
3184         }
3185     }
3186
3187     s->coded_score[n] = last_score;
3188
3189     dc= FFABS(block[0]);
3190     last_non_zero= last_i - 1;
3191     memset(block + start_i, 0, (64-start_i)*sizeof(DCTELEM));
3192
3193     if(last_non_zero < start_i)
3194         return last_non_zero;
3195
3196     if(last_non_zero == 0 && start_i == 0){
3197         int best_level= 0;
3198         int best_score= dc * dc;
3199
3200         for(i=0; i<coeff_count[0]; i++){
3201             int level= coeff[i][0];
3202             int alevel= FFABS(level);
3203             int unquant_coeff, score, distortion;
3204
3205             if(s->out_format == FMT_H263){
3206                     unquant_coeff= (alevel*qmul + qadd)>>3;
3207             }else{ //MPEG1
3208                     unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[0])) >> 4;
3209                     unquant_coeff =   (unquant_coeff - 1) | 1;
3210             }
3211             unquant_coeff = (unquant_coeff + 4) >> 3;
3212             unquant_coeff<<= 3 + 3;
3213
3214             distortion= (unquant_coeff - dc) * (unquant_coeff - dc);
3215             level+=64;
3216             if((level&(~127)) == 0) score= distortion + last_length[UNI_AC_ENC_INDEX(0, level)]*lambda;
3217             else                    score= distortion + esc_length*lambda;
3218
3219             if(score < best_score){
3220                 best_score= score;
3221                 best_level= level - 64;
3222             }
3223         }
3224         block[0]= best_level;
3225         s->coded_score[n] = best_score - dc*dc;
3226         if(best_level == 0) return -1;
3227         else                return last_non_zero;
3228     }
3229
3230     i= last_i;
3231     assert(last_level);
3232
3233     block[ perm_scantable[last_non_zero] ]= last_level;
3234     i -= last_run + 1;
3235
3236     for(; i>start_i; i -= run_tab[i] + 1){
3237         block[ perm_scantable[i-1] ]= level_tab[i];
3238     }
3239
3240     return last_non_zero;
3241 }
3242
3243 //#define REFINE_STATS 1
3244 static int16_t basis[64][64];
3245
3246 static void build_basis(uint8_t *perm){
3247     int i, j, x, y;
3248     emms_c();
3249     for(i=0; i<8; i++){
3250         for(j=0; j<8; j++){
3251             for(y=0; y<8; y++){
3252                 for(x=0; x<8; x++){
3253                     double s= 0.25*(1<<BASIS_SHIFT);
3254                     int index= 8*i + j;
3255                     int perm_index= perm[index];
3256                     if(i==0) s*= sqrt(0.5);
3257                     if(j==0) s*= sqrt(0.5);
3258                     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)));
3259                 }
3260             }
3261         }
3262     }
3263 }
3264
3265 static int dct_quantize_refine(MpegEncContext *s, //FIXME breaks denoise?
3266                         DCTELEM *block, int16_t *weight, DCTELEM *orig,
3267                         int n, int qscale){
3268     int16_t rem[64];
3269     DECLARE_ALIGNED_16(DCTELEM, d1[64]);
3270     const int *qmat;
3271     const uint8_t *scantable= s->intra_scantable.scantable;
3272     const uint8_t *perm_scantable= s->intra_scantable.permutated;
3273 //    unsigned int threshold1, threshold2;
3274 //    int bias=0;
3275     int run_tab[65];
3276     int prev_run=0;
3277     int prev_level=0;
3278     int qmul, qadd, start_i, last_non_zero, i, dc;
3279     uint8_t * length;
3280     uint8_t * last_length;
3281     int lambda;
3282     int rle_index, run, q = 1, sum; //q is only used when s->mb_intra is true
3283 #ifdef REFINE_STATS
3284 static int count=0;
3285 static int after_last=0;
3286 static int to_zero=0;
3287 static int from_zero=0;
3288 static int raise=0;
3289 static int lower=0;
3290 static int messed_sign=0;
3291 #endif
3292
3293     if(basis[0][0] == 0)
3294         build_basis(s->dsp.idct_permutation);
3295
3296     qmul= qscale*2;
3297     qadd= (qscale-1)|1;
3298     if (s->mb_intra) {
3299         if (!s->h263_aic) {
3300             if (n < 4)
3301                 q = s->y_dc_scale;
3302             else
3303                 q = s->c_dc_scale;
3304         } else{
3305             /* For AIC we skip quant/dequant of INTRADC */
3306             q = 1;
3307             qadd=0;
3308         }
3309         q <<= RECON_SHIFT-3;
3310         /* note: block[0] is assumed to be positive */
3311         dc= block[0]*q;
3312 //        block[0] = (block[0] + (q >> 1)) / q;
3313         start_i = 1;
3314         qmat = s->q_intra_matrix[qscale];
3315 //        if(s->mpeg_quant || s->out_format == FMT_MPEG1)
3316 //            bias= 1<<(QMAT_SHIFT-1);
3317         length     = s->intra_ac_vlc_length;
3318         last_length= s->intra_ac_vlc_last_length;
3319     } else {
3320         dc= 0;
3321         start_i = 0;
3322         qmat = s->q_inter_matrix[qscale];
3323         length     = s->inter_ac_vlc_length;
3324         last_length= s->inter_ac_vlc_last_length;
3325     }
3326     last_non_zero = s->block_last_index[n];
3327
3328 #ifdef REFINE_STATS
3329 {START_TIMER
3330 #endif
3331     dc += (1<<(RECON_SHIFT-1));
3332     for(i=0; i<64; i++){
3333         rem[i]= dc - (orig[i]<<RECON_SHIFT); //FIXME  use orig dirrectly instead of copying to rem[]
3334     }
3335 #ifdef REFINE_STATS
3336 STOP_TIMER("memset rem[]")}
3337 #endif
3338     sum=0;
3339     for(i=0; i<64; i++){
3340         int one= 36;
3341         int qns=4;
3342         int w;
3343
3344         w= FFABS(weight[i]) + qns*one;
3345         w= 15 + (48*qns*one + w/2)/w; // 16 .. 63
3346
3347         weight[i] = w;
3348 //        w=weight[i] = (63*qns + (w/2)) / w;
3349
3350         assert(w>0);
3351         assert(w<(1<<6));
3352         sum += w*w;
3353     }
3354     lambda= sum*(uint64_t)s->lambda2 >> (FF_LAMBDA_SHIFT - 6 + 6 + 6 + 6);
3355 #ifdef REFINE_STATS
3356 {START_TIMER
3357 #endif
3358     run=0;
3359     rle_index=0;
3360     for(i=start_i; i<=last_non_zero; i++){
3361         int j= perm_scantable[i];
3362         const int level= block[j];
3363         int coeff;
3364
3365         if(level){
3366             if(level<0) coeff= qmul*level - qadd;
3367             else        coeff= qmul*level + qadd;
3368             run_tab[rle_index++]=run;
3369             run=0;
3370
3371             s->dsp.add_8x8basis(rem, basis[j], coeff);
3372         }else{
3373             run++;
3374         }
3375     }
3376 #ifdef REFINE_STATS
3377 if(last_non_zero>0){
3378 STOP_TIMER("init rem[]")
3379 }
3380 }
3381
3382 {START_TIMER
3383 #endif
3384     for(;;){
3385         int best_score=s->dsp.try_8x8basis(rem, weight, basis[0], 0);
3386         int best_coeff=0;
3387         int best_change=0;
3388         int run2, best_unquant_change=0, analyze_gradient;
3389 #ifdef REFINE_STATS
3390 {START_TIMER
3391 #endif
3392         analyze_gradient = last_non_zero > 2 || s->avctx->quantizer_noise_shaping >= 3;
3393
3394         if(analyze_gradient){
3395 #ifdef REFINE_STATS
3396 {START_TIMER
3397 #endif
3398             for(i=0; i<64; i++){
3399                 int w= weight[i];
3400
3401                 d1[i] = (rem[i]*w*w + (1<<(RECON_SHIFT+12-1)))>>(RECON_SHIFT+12);
3402             }
3403 #ifdef REFINE_STATS
3404 STOP_TIMER("rem*w*w")}
3405 {START_TIMER
3406 #endif
3407             s->dsp.fdct(d1);
3408 #ifdef REFINE_STATS
3409 STOP_TIMER("dct")}
3410 #endif
3411         }
3412
3413         if(start_i){
3414             const int level= block[0];
3415             int change, old_coeff;
3416
3417             assert(s->mb_intra);
3418
3419             old_coeff= q*level;
3420
3421             for(change=-1; change<=1; change+=2){
3422                 int new_level= level + change;
3423                 int score, new_coeff;
3424
3425                 new_coeff= q*new_level;
3426                 if(new_coeff >= 2048 || new_coeff < 0)
3427                     continue;
3428
3429                 score= s->dsp.try_8x8basis(rem, weight, basis[0], new_coeff - old_coeff);
3430                 if(score<best_score){
3431                     best_score= score;
3432                     best_coeff= 0;
3433                     best_change= change;
3434                     best_unquant_change= new_coeff - old_coeff;
3435                 }
3436             }
3437         }
3438
3439         run=0;
3440         rle_index=0;
3441         run2= run_tab[rle_index++];
3442         prev_level=0;
3443         prev_run=0;
3444
3445         for(i=start_i; i<64; i++){
3446             int j= perm_scantable[i];
3447             const int level= block[j];
3448             int change, old_coeff;
3449
3450             if(s->avctx->quantizer_noise_shaping < 3 && i > last_non_zero + 1)
3451                 break;
3452
3453             if(level){
3454                 if(level<0) old_coeff= qmul*level - qadd;
3455                 else        old_coeff= qmul*level + qadd;
3456                 run2= run_tab[rle_index++]; //FIXME ! maybe after last
3457             }else{
3458                 old_coeff=0;
3459                 run2--;
3460                 assert(run2>=0 || i >= last_non_zero );
3461             }
3462
3463             for(change=-1; change<=1; change+=2){
3464                 int new_level= level + change;
3465                 int score, new_coeff, unquant_change;
3466
3467                 score=0;
3468                 if(s->avctx->quantizer_noise_shaping < 2 && FFABS(new_level) > FFABS(level))
3469                    continue;
3470
3471                 if(new_level){
3472                     if(new_level<0) new_coeff= qmul*new_level - qadd;
3473                     else            new_coeff= qmul*new_level + qadd;
3474                     if(new_coeff >= 2048 || new_coeff <= -2048)
3475                         continue;
3476                     //FIXME check for overflow
3477
3478                     if(level){
3479                         if(level < 63 && level > -63){
3480                             if(i < last_non_zero)
3481                                 score +=   length[UNI_AC_ENC_INDEX(run, new_level+64)]
3482                                          - length[UNI_AC_ENC_INDEX(run, level+64)];
3483                             else
3484                                 score +=   last_length[UNI_AC_ENC_INDEX(run, new_level+64)]
3485                                          - last_length[UNI_AC_ENC_INDEX(run, level+64)];
3486                         }
3487                     }else{
3488                         assert(FFABS(new_level)==1);
3489
3490                         if(analyze_gradient){
3491                             int g= d1[ scantable[i] ];
3492                             if(g && (g^new_level) >= 0)
3493                                 continue;
3494                         }
3495
3496                         if(i < last_non_zero){
3497                             int next_i= i + run2 + 1;
3498                             int next_level= block[ perm_scantable[next_i] ] + 64;
3499
3500                             if(next_level&(~127))
3501                                 next_level= 0;
3502
3503                             if(next_i < last_non_zero)
3504                                 score +=   length[UNI_AC_ENC_INDEX(run, 65)]
3505                                          + length[UNI_AC_ENC_INDEX(run2, next_level)]
3506                                          - length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
3507                             else
3508                                 score +=  length[UNI_AC_ENC_INDEX(run, 65)]
3509                                         + last_length[UNI_AC_ENC_INDEX(run2, next_level)]
3510                                         - last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
3511                         }else{
3512                             score += last_length[UNI_AC_ENC_INDEX(run, 65)];
3513                             if(prev_level){
3514                                 score +=  length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
3515                                         - last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
3516                             }
3517                         }
3518                     }
3519                 }else{
3520                     new_coeff=0;
3521                     assert(FFABS(level)==1);
3522
3523                     if(i < last_non_zero){
3524                         int next_i= i + run2 + 1;
3525                         int next_level= block[ perm_scantable[next_i] ] + 64;
3526
3527                         if(next_level&(~127))
3528                             next_level= 0;
3529
3530                         if(next_i < last_non_zero)
3531                             score +=   length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
3532                                      - length[UNI_AC_ENC_INDEX(run2, next_level)]
3533                                      - length[UNI_AC_ENC_INDEX(run, 65)];
3534                         else
3535                             score +=   last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
3536                                      - last_length[UNI_AC_ENC_INDEX(run2, next_level)]
3537                                      - length[UNI_AC_ENC_INDEX(run, 65)];
3538                     }else{
3539                         score += -last_length[UNI_AC_ENC_INDEX(run, 65)];
3540                         if(prev_level){
3541                             score +=  last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
3542                                     - length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
3543                         }
3544                     }
3545                 }
3546
3547                 score *= lambda;
3548
3549                 unquant_change= new_coeff - old_coeff;
3550                 assert((score < 100*lambda && score > -100*lambda) || lambda==0);
3551
3552                 score+= s->dsp.try_8x8basis(rem, weight, basis[j], unquant_change);
3553                 if(score<best_score){
3554                     best_score= score;
3555                     best_coeff= i;
3556                     best_change= change;
3557                     best_unquant_change= unquant_change;
3558                 }
3559             }
3560             if(level){
3561                 prev_level= level + 64;
3562                 if(prev_level&(~127))
3563                     prev_level= 0;
3564                 prev_run= run;
3565                 run=0;
3566             }else{
3567                 run++;
3568             }
3569         }
3570 #ifdef REFINE_STATS
3571 STOP_TIMER("iterative step")}
3572 #endif
3573
3574         if(best_change){
3575             int j= perm_scantable[ best_coeff ];
3576
3577             block[j] += best_change;
3578
3579             if(best_coeff > last_non_zero){
3580                 last_non_zero= best_coeff;
3581                 assert(block[j]);
3582 #ifdef REFINE_STATS
3583 after_last++;
3584 #endif
3585             }else{
3586 #ifdef REFINE_STATS
3587 if(block[j]){
3588     if(block[j] - best_change){
3589         if(FFABS(block[j]) > FFABS(block[j] - best_change)){
3590             raise++;
3591         }else{
3592             lower++;
3593         }
3594     }else{
3595         from_zero++;
3596     }
3597 }else{
3598     to_zero++;
3599 }
3600 #endif
3601                 for(; last_non_zero>=start_i; last_non_zero--){
3602                     if(block[perm_scantable[last_non_zero]])
3603                         break;
3604                 }
3605             }
3606 #ifdef REFINE_STATS
3607 count++;
3608 if(256*256*256*64 % count == 0){
3609     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);
3610 }
3611 #endif
3612             run=0;
3613             rle_index=0;
3614             for(i=start_i; i<=last_non_zero; i++){
3615                 int j= perm_scantable[i];
3616                 const int level= block[j];
3617
3618                  if(level){
3619                      run_tab[rle_index++]=run;
3620                      run=0;
3621                  }else{
3622                      run++;
3623                  }
3624             }
3625
3626             s->dsp.add_8x8basis(rem, basis[j], best_unquant_change);
3627         }else{
3628             break;
3629         }
3630     }
3631 #ifdef REFINE_STATS
3632 if(last_non_zero>0){
3633 STOP_TIMER("iterative search")
3634 }
3635 }
3636 #endif
3637
3638     return last_non_zero;
3639 }
3640
3641 int dct_quantize_c(MpegEncContext *s,
3642                         DCTELEM *block, int n,
3643                         int qscale, int *overflow)
3644 {
3645     int i, j, level, last_non_zero, q, start_i;
3646     const int *qmat;
3647     const uint8_t *scantable= s->intra_scantable.scantable;
3648     int bias;
3649     int max=0;
3650     unsigned int threshold1, threshold2;
3651
3652     s->dsp.fdct (block);
3653
3654     if(s->dct_error_sum)
3655         s->denoise_dct(s, block);
3656
3657     if (s->mb_intra) {
3658         if (!s->h263_aic) {
3659             if (n < 4)
3660                 q = s->y_dc_scale;
3661             else
3662                 q = s->c_dc_scale;
3663             q = q << 3;
3664         } else
3665             /* For AIC we skip quant/dequant of INTRADC */
3666             q = 1 << 3;
3667
3668         /* note: block[0] is assumed to be positive */
3669         block[0] = (block[0] + (q >> 1)) / q;
3670         start_i = 1;
3671         last_non_zero = 0;
3672         qmat = s->q_intra_matrix[qscale];
3673         bias= s->intra_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
3674     } else {
3675         start_i = 0;
3676         last_non_zero = -1;
3677         qmat = s->q_inter_matrix[qscale];
3678         bias= s->inter_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
3679     }
3680     threshold1= (1<<QMAT_SHIFT) - bias - 1;
3681     threshold2= (threshold1<<1);
3682     for(i=63;i>=start_i;i--) {
3683         j = scantable[i];
3684         level = block[j] * qmat[j];
3685
3686         if(((unsigned)(level+threshold1))>threshold2){
3687             last_non_zero = i;
3688             break;
3689         }else{
3690             block[j]=0;
3691         }
3692     }
3693     for(i=start_i; i<=last_non_zero; i++) {
3694         j = scantable[i];
3695         level = block[j] * qmat[j];
3696
3697 //        if(   bias+level >= (1<<QMAT_SHIFT)
3698 //           || bias-level >= (1<<QMAT_SHIFT)){
3699         if(((unsigned)(level+threshold1))>threshold2){
3700             if(level>0){
3701                 level= (bias + level)>>QMAT_SHIFT;
3702                 block[j]= level;
3703             }else{
3704                 level= (bias - level)>>QMAT_SHIFT;
3705                 block[j]= -level;
3706             }
3707             max |=level;
3708         }else{
3709             block[j]=0;
3710         }
3711     }
3712     *overflow= s->max_qcoeff < max; //overflow might have happened
3713
3714     /* we need this permutation so that we correct the IDCT, we only permute the !=0 elements */
3715     if (s->dsp.idct_permutation_type != FF_NO_IDCT_PERM)
3716         ff_block_permute(block, s->dsp.idct_permutation, scantable, last_non_zero);
3717
3718     return last_non_zero;
3719 }
3720
3721 AVCodec h263_encoder = {
3722     "h263",
3723     CODEC_TYPE_VIDEO,
3724     CODEC_ID_H263,
3725     sizeof(MpegEncContext),
3726     MPV_encode_init,
3727     MPV_encode_picture,
3728     MPV_encode_end,
3729     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3730 };
3731
3732 AVCodec h263p_encoder = {
3733     "h263p",
3734     CODEC_TYPE_VIDEO,
3735     CODEC_ID_H263P,
3736     sizeof(MpegEncContext),
3737     MPV_encode_init,
3738     MPV_encode_picture,
3739     MPV_encode_end,
3740     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3741 };
3742
3743 AVCodec flv_encoder = {
3744     "flv",
3745     CODEC_TYPE_VIDEO,
3746     CODEC_ID_FLV1,
3747     sizeof(MpegEncContext),
3748     MPV_encode_init,
3749     MPV_encode_picture,
3750     MPV_encode_end,
3751     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3752 };
3753
3754 AVCodec rv10_encoder = {
3755     "rv10",
3756     CODEC_TYPE_VIDEO,
3757     CODEC_ID_RV10,
3758     sizeof(MpegEncContext),
3759     MPV_encode_init,
3760     MPV_encode_picture,
3761     MPV_encode_end,
3762     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3763 };
3764
3765 AVCodec rv20_encoder = {
3766     "rv20",
3767     CODEC_TYPE_VIDEO,
3768     CODEC_ID_RV20,
3769     sizeof(MpegEncContext),
3770     MPV_encode_init,
3771     MPV_encode_picture,
3772     MPV_encode_end,
3773     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3774 };
3775
3776 AVCodec mpeg4_encoder = {
3777     "mpeg4",
3778     CODEC_TYPE_VIDEO,
3779     CODEC_ID_MPEG4,
3780     sizeof(MpegEncContext),
3781     MPV_encode_init,
3782     MPV_encode_picture,
3783     MPV_encode_end,
3784     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3785     .capabilities= CODEC_CAP_DELAY,
3786 };
3787
3788 AVCodec msmpeg4v1_encoder = {
3789     "msmpeg4v1",
3790     CODEC_TYPE_VIDEO,
3791     CODEC_ID_MSMPEG4V1,
3792     sizeof(MpegEncContext),
3793     MPV_encode_init,
3794     MPV_encode_picture,
3795     MPV_encode_end,
3796     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3797 };
3798
3799 AVCodec msmpeg4v2_encoder = {
3800     "msmpeg4v2",
3801     CODEC_TYPE_VIDEO,
3802     CODEC_ID_MSMPEG4V2,
3803     sizeof(MpegEncContext),
3804     MPV_encode_init,
3805     MPV_encode_picture,
3806     MPV_encode_end,
3807     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3808 };
3809
3810 AVCodec msmpeg4v3_encoder = {
3811     "msmpeg4",
3812     CODEC_TYPE_VIDEO,
3813     CODEC_ID_MSMPEG4V3,
3814     sizeof(MpegEncContext),
3815     MPV_encode_init,
3816     MPV_encode_picture,
3817     MPV_encode_end,
3818     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3819 };
3820
3821 AVCodec wmv1_encoder = {
3822     "wmv1",
3823     CODEC_TYPE_VIDEO,
3824     CODEC_ID_WMV1,
3825     sizeof(MpegEncContext),
3826     MPV_encode_init,
3827     MPV_encode_picture,
3828     MPV_encode_end,
3829     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
3830 };