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libavcodec/mpegvideo_enc.c

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00001 /*
00002  * The simplest mpeg encoder (well, it was the simplest!)
00003  * Copyright (c) 2000,2001 Fabrice Bellard
00004  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
00005  *
00006  * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
00007  *
00008  * This file is part of FFmpeg.
00009  *
00010  * FFmpeg is free software; you can redistribute it and/or
00011  * modify it under the terms of the GNU Lesser General Public
00012  * License as published by the Free Software Foundation; either
00013  * version 2.1 of the License, or (at your option) any later version.
00014  *
00015  * FFmpeg is distributed in the hope that it will be useful,
00016  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018  * Lesser General Public License for more details.
00019  *
00020  * You should have received a copy of the GNU Lesser General Public
00021  * License along with FFmpeg; if not, write to the Free Software
00022  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00023  */
00024 
00030 #include "avcodec.h"
00031 #include "dsputil.h"
00032 #include "mpegvideo.h"
00033 #include "mpegvideo_common.h"
00034 #include "mjpegenc.h"
00035 #include "msmpeg4.h"
00036 #include "h263.h"
00037 #include "faandct.h"
00038 #include "aandcttab.h"
00039 #include <limits.h>
00040 
00041 //#undef NDEBUG
00042 //#include <assert.h>
00043 
00044 static int encode_picture(MpegEncContext *s, int picture_number);
00045 static int dct_quantize_refine(MpegEncContext *s, DCTELEM *block, int16_t *weight, DCTELEM *orig, int n, int qscale);
00046 static int sse_mb(MpegEncContext *s);
00047 
00048 /* enable all paranoid tests for rounding, overflows, etc... */
00049 //#define PARANOID
00050 
00051 //#define DEBUG
00052 
00053 static uint8_t default_mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
00054 static uint8_t default_fcode_tab[MAX_MV*2+1];
00055 
00056 void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
00057                            const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra)
00058 {
00059     int qscale;
00060     int shift=0;
00061 
00062     for(qscale=qmin; qscale<=qmax; qscale++){
00063         int i;
00064         if (dsp->fdct == ff_jpeg_fdct_islow
00065 #ifdef FAAN_POSTSCALE
00066             || dsp->fdct == ff_faandct
00067 #endif
00068             ) {
00069             for(i=0;i<64;i++) {
00070                 const int j= dsp->idct_permutation[i];
00071                 /* 16 <= qscale * quant_matrix[i] <= 7905 */
00072                 /* 19952             <= ff_aanscales[i] * qscale * quant_matrix[i]               <= 249205026 */
00073                 /* (1 << 36) / 19952 >= (1 << 36) / (ff_aanscales[i] * qscale * quant_matrix[i]) >= (1 << 36) / 249205026 */
00074                 /* 3444240           >= (1 << 36) / (ff_aanscales[i] * qscale * quant_matrix[i]) >= 275 */
00075 
00076                 qmat[qscale][i] = (int)((UINT64_C(1) << QMAT_SHIFT) /
00077                                 (qscale * quant_matrix[j]));
00078             }
00079         } else if (dsp->fdct == fdct_ifast
00080 #ifndef FAAN_POSTSCALE
00081                    || dsp->fdct == ff_faandct
00082 #endif
00083                    ) {
00084             for(i=0;i<64;i++) {
00085                 const int j= dsp->idct_permutation[i];
00086                 /* 16 <= qscale * quant_matrix[i] <= 7905 */
00087                 /* 19952             <= ff_aanscales[i] * qscale * quant_matrix[i]               <= 249205026 */
00088                 /* (1 << 36) / 19952 >= (1 << 36) / (ff_aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
00089                 /* 3444240           >= (1 << 36) / (ff_aanscales[i] * qscale * quant_matrix[i]) >= 275 */
00090 
00091                 qmat[qscale][i] = (int)((UINT64_C(1) << (QMAT_SHIFT + 14)) /
00092                                 (ff_aanscales[i] * qscale * quant_matrix[j]));
00093             }
00094         } else {
00095             for(i=0;i<64;i++) {
00096                 const int j= dsp->idct_permutation[i];
00097                 /* We can safely suppose that 16 <= quant_matrix[i] <= 255
00098                    So 16           <= qscale * quant_matrix[i]             <= 7905
00099                    so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
00100                    so 32768        >= (1<<19) / (qscale * quant_matrix[i]) >= 67
00101                 */
00102                 qmat[qscale][i] = (int)((UINT64_C(1) << QMAT_SHIFT) / (qscale * quant_matrix[j]));
00103 //                qmat  [qscale][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
00104                 qmat16[qscale][0][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[j]);
00105 
00106                 if(qmat16[qscale][0][i]==0 || qmat16[qscale][0][i]==128*256) qmat16[qscale][0][i]=128*256-1;
00107                 qmat16[qscale][1][i]= ROUNDED_DIV(bias<<(16-QUANT_BIAS_SHIFT), qmat16[qscale][0][i]);
00108             }
00109         }
00110 
00111         for(i=intra; i<64; i++){
00112             int64_t max= 8191;
00113             if (dsp->fdct == fdct_ifast
00114 #ifndef FAAN_POSTSCALE
00115                    || dsp->fdct == ff_faandct
00116 #endif
00117                    ) {
00118                 max = (8191LL*ff_aanscales[i]) >> 14;
00119             }
00120             while(((max * qmat[qscale][i]) >> shift) > INT_MAX){
00121                 shift++;
00122             }
00123         }
00124     }
00125     if(shift){
00126         av_log(NULL, AV_LOG_INFO, "Warning, QMAT_SHIFT is larger than %d, overflows possible\n", QMAT_SHIFT - shift);
00127     }
00128 }
00129 
00130 static inline void update_qscale(MpegEncContext *s){
00131     s->qscale= (s->lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
00132     s->qscale= av_clip(s->qscale, s->avctx->qmin, s->avctx->qmax);
00133 
00134     s->lambda2= (s->lambda*s->lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
00135 }
00136 
00137 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix){
00138     int i;
00139 
00140     if(matrix){
00141         put_bits(pb, 1, 1);
00142         for(i=0;i<64;i++) {
00143             put_bits(pb, 8, matrix[ ff_zigzag_direct[i] ]);
00144         }
00145     }else
00146         put_bits(pb, 1, 0);
00147 }
00148 
00149 static void copy_picture_attributes(MpegEncContext *s, AVFrame *dst, AVFrame *src){
00150     int i;
00151 
00152     dst->pict_type              = src->pict_type;
00153     dst->quality                = src->quality;
00154     dst->coded_picture_number   = src->coded_picture_number;
00155     dst->display_picture_number = src->display_picture_number;
00156 //    dst->reference              = src->reference;
00157     dst->pts                    = src->pts;
00158     dst->interlaced_frame       = src->interlaced_frame;
00159     dst->top_field_first        = src->top_field_first;
00160 
00161     if(s->avctx->me_threshold){
00162         if(!src->motion_val[0])
00163             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.motion_val not set!\n");
00164         if(!src->mb_type)
00165             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.mb_type not set!\n");
00166         if(!src->ref_index[0])
00167             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.ref_index not set!\n");
00168         if(src->motion_subsample_log2 != dst->motion_subsample_log2)
00169             av_log(s->avctx, AV_LOG_ERROR, "AVFrame.motion_subsample_log2 doesn't match! (%d!=%d)\n",
00170             src->motion_subsample_log2, dst->motion_subsample_log2);
00171 
00172         memcpy(dst->mb_type, src->mb_type, s->mb_stride * s->mb_height * sizeof(dst->mb_type[0]));
00173 
00174         for(i=0; i<2; i++){
00175             int stride= ((16*s->mb_width )>>src->motion_subsample_log2) + 1;
00176             int height= ((16*s->mb_height)>>src->motion_subsample_log2);
00177 
00178             if(src->motion_val[i] && src->motion_val[i] != dst->motion_val[i]){
00179                 memcpy(dst->motion_val[i], src->motion_val[i], 2*stride*height*sizeof(int16_t));
00180             }
00181             if(src->ref_index[i] && src->ref_index[i] != dst->ref_index[i]){
00182                 memcpy(dst->ref_index[i], src->ref_index[i], s->b8_stride*2*s->mb_height*sizeof(int8_t));
00183             }
00184         }
00185     }
00186 }
00187 
00188 static void update_duplicate_context_after_me(MpegEncContext *dst, MpegEncContext *src){
00189 #define COPY(a) dst->a= src->a
00190     COPY(pict_type);
00191     COPY(current_picture);
00192     COPY(f_code);
00193     COPY(b_code);
00194     COPY(qscale);
00195     COPY(lambda);
00196     COPY(lambda2);
00197     COPY(picture_in_gop_number);
00198     COPY(gop_picture_number);
00199     COPY(frame_pred_frame_dct); //FIXME don't set in encode_header
00200     COPY(progressive_frame); //FIXME don't set in encode_header
00201     COPY(partitioned_frame); //FIXME don't set in encode_header
00202 #undef COPY
00203 }
00204 
00209 static void MPV_encode_defaults(MpegEncContext *s){
00210     int i;
00211     MPV_common_defaults(s);
00212 
00213     for(i=-16; i<16; i++){
00214         default_fcode_tab[i + MAX_MV]= 1;
00215     }
00216     s->me.mv_penalty= default_mv_penalty;
00217     s->fcode_tab= default_fcode_tab;
00218 }
00219 
00220 /* init video encoder */
00221 av_cold int MPV_encode_init(AVCodecContext *avctx)
00222 {
00223     MpegEncContext *s = avctx->priv_data;
00224     int i;
00225     int chroma_h_shift, chroma_v_shift;
00226 
00227     MPV_encode_defaults(s);
00228 
00229     switch (avctx->codec_id) {
00230     case CODEC_ID_MPEG2VIDEO:
00231         if(avctx->pix_fmt != PIX_FMT_YUV420P && avctx->pix_fmt != PIX_FMT_YUV422P){
00232             av_log(avctx, AV_LOG_ERROR, "only YUV420 and YUV422 are supported\n");
00233             return -1;
00234         }
00235         break;
00236     case CODEC_ID_LJPEG:
00237     case CODEC_ID_MJPEG:
00238         if(avctx->pix_fmt != PIX_FMT_YUVJ420P && avctx->pix_fmt != PIX_FMT_YUVJ422P && avctx->pix_fmt != PIX_FMT_RGB32 &&
00239            ((avctx->pix_fmt != PIX_FMT_YUV420P && avctx->pix_fmt != PIX_FMT_YUV422P) || avctx->strict_std_compliance>FF_COMPLIANCE_INOFFICIAL)){
00240             av_log(avctx, AV_LOG_ERROR, "colorspace not supported in jpeg\n");
00241             return -1;
00242         }
00243         break;
00244     default:
00245         if(avctx->pix_fmt != PIX_FMT_YUV420P){
00246             av_log(avctx, AV_LOG_ERROR, "only YUV420 is supported\n");
00247             return -1;
00248         }
00249     }
00250 
00251     switch (avctx->pix_fmt) {
00252     case PIX_FMT_YUVJ422P:
00253     case PIX_FMT_YUV422P:
00254         s->chroma_format = CHROMA_422;
00255         break;
00256     case PIX_FMT_YUVJ420P:
00257     case PIX_FMT_YUV420P:
00258     default:
00259         s->chroma_format = CHROMA_420;
00260         break;
00261     }
00262 
00263     s->bit_rate = avctx->bit_rate;
00264     s->width = avctx->width;
00265     s->height = avctx->height;
00266     if(avctx->gop_size > 600 && avctx->strict_std_compliance>FF_COMPLIANCE_EXPERIMENTAL){
00267         av_log(avctx, AV_LOG_ERROR, "Warning keyframe interval too large! reducing it ...\n");
00268         avctx->gop_size=600;
00269     }
00270     s->gop_size = avctx->gop_size;
00271     s->avctx = avctx;
00272     s->flags= avctx->flags;
00273     s->flags2= avctx->flags2;
00274     s->max_b_frames= avctx->max_b_frames;
00275     s->codec_id= avctx->codec->id;
00276     s->luma_elim_threshold  = avctx->luma_elim_threshold;
00277     s->chroma_elim_threshold= avctx->chroma_elim_threshold;
00278     s->strict_std_compliance= avctx->strict_std_compliance;
00279     s->data_partitioning= avctx->flags & CODEC_FLAG_PART;
00280     s->quarter_sample= (avctx->flags & CODEC_FLAG_QPEL)!=0;
00281     s->mpeg_quant= avctx->mpeg_quant;
00282     s->rtp_mode= !!avctx->rtp_payload_size;
00283     s->intra_dc_precision= avctx->intra_dc_precision;
00284     s->user_specified_pts = AV_NOPTS_VALUE;
00285 
00286     if (s->gop_size <= 1) {
00287         s->intra_only = 1;
00288         s->gop_size = 12;
00289     } else {
00290         s->intra_only = 0;
00291     }
00292 
00293     s->me_method = avctx->me_method;
00294 
00295     /* Fixed QSCALE */
00296     s->fixed_qscale = !!(avctx->flags & CODEC_FLAG_QSCALE);
00297 
00298     s->adaptive_quant= (   s->avctx->lumi_masking
00299                         || s->avctx->dark_masking
00300                         || s->avctx->temporal_cplx_masking
00301                         || s->avctx->spatial_cplx_masking
00302                         || s->avctx->p_masking
00303                         || s->avctx->border_masking
00304                         || (s->flags&CODEC_FLAG_QP_RD))
00305                        && !s->fixed_qscale;
00306 
00307     s->obmc= !!(s->flags & CODEC_FLAG_OBMC);
00308     s->loop_filter= !!(s->flags & CODEC_FLAG_LOOP_FILTER);
00309     s->alternate_scan= !!(s->flags & CODEC_FLAG_ALT_SCAN);
00310     s->intra_vlc_format= !!(s->flags2 & CODEC_FLAG2_INTRA_VLC);
00311     s->q_scale_type= !!(s->flags2 & CODEC_FLAG2_NON_LINEAR_QUANT);
00312 
00313     if(avctx->rc_max_rate && !avctx->rc_buffer_size){
00314         av_log(avctx, AV_LOG_ERROR, "a vbv buffer size is needed, for encoding with a maximum bitrate\n");
00315         return -1;
00316     }
00317 
00318     if(avctx->rc_min_rate && avctx->rc_max_rate != avctx->rc_min_rate){
00319         av_log(avctx, AV_LOG_INFO, "Warning min_rate > 0 but min_rate != max_rate isn't recommended!\n");
00320     }
00321 
00322     if(avctx->rc_min_rate && avctx->rc_min_rate > avctx->bit_rate){
00323         av_log(avctx, AV_LOG_ERROR, "bitrate below min bitrate\n");
00324         return -1;
00325     }
00326 
00327     if(avctx->rc_max_rate && avctx->rc_max_rate < avctx->bit_rate){
00328         av_log(avctx, AV_LOG_INFO, "bitrate above max bitrate\n");
00329         return -1;
00330     }
00331 
00332     if(avctx->rc_max_rate && avctx->rc_max_rate == avctx->bit_rate && avctx->rc_max_rate != avctx->rc_min_rate){
00333         av_log(avctx, AV_LOG_INFO, "impossible bitrate constraints, this will fail\n");
00334     }
00335 
00336     if(avctx->rc_buffer_size && avctx->bit_rate*av_q2d(avctx->time_base) > avctx->rc_buffer_size){
00337         av_log(avctx, AV_LOG_ERROR, "VBV buffer too small for bitrate\n");
00338         return -1;
00339     }
00340 
00341     if(avctx->bit_rate*av_q2d(avctx->time_base) > avctx->bit_rate_tolerance){
00342         av_log(avctx, AV_LOG_ERROR, "bitrate tolerance too small for bitrate\n");
00343         return -1;
00344     }
00345 
00346     if(   s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate
00347        && (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO)
00348        && 90000LL * (avctx->rc_buffer_size-1) > s->avctx->rc_max_rate*0xFFFFLL){
00349 
00350         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");
00351     }
00352 
00353     if((s->flags & CODEC_FLAG_4MV) && s->codec_id != CODEC_ID_MPEG4
00354        && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P && s->codec_id != CODEC_ID_FLV1){
00355         av_log(avctx, AV_LOG_ERROR, "4MV not supported by codec\n");
00356         return -1;
00357     }
00358 
00359     if(s->obmc && s->avctx->mb_decision != FF_MB_DECISION_SIMPLE){
00360         av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with simple mb decision\n");
00361         return -1;
00362     }
00363 
00364     if(s->obmc && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P){
00365         av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with H263(+)\n");
00366         return -1;
00367     }
00368 
00369     if(s->quarter_sample && s->codec_id != CODEC_ID_MPEG4){
00370         av_log(avctx, AV_LOG_ERROR, "qpel not supported by codec\n");
00371         return -1;
00372     }
00373 
00374     if(s->data_partitioning && s->codec_id != CODEC_ID_MPEG4){
00375         av_log(avctx, AV_LOG_ERROR, "data partitioning not supported by codec\n");
00376         return -1;
00377     }
00378 
00379     if(s->max_b_frames && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO){
00380         av_log(avctx, AV_LOG_ERROR, "b frames not supported by codec\n");
00381         return -1;
00382     }
00383 
00384     if((s->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME|CODEC_FLAG_ALT_SCAN))
00385        && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG2VIDEO){
00386         av_log(avctx, AV_LOG_ERROR, "interlacing not supported by codec\n");
00387         return -1;
00388     }
00389 
00390     if(s->mpeg_quant && s->codec_id != CODEC_ID_MPEG4){ //FIXME mpeg2 uses that too
00391         av_log(avctx, AV_LOG_ERROR, "mpeg2 style quantization not supported by codec\n");
00392         return -1;
00393     }
00394 
00395     if((s->flags & CODEC_FLAG_CBP_RD) && !avctx->trellis){
00396         av_log(avctx, AV_LOG_ERROR, "CBP RD needs trellis quant\n");
00397         return -1;
00398     }
00399 
00400     if((s->flags & CODEC_FLAG_QP_RD) && s->avctx->mb_decision != FF_MB_DECISION_RD){
00401         av_log(avctx, AV_LOG_ERROR, "QP RD needs mbd=2\n");
00402         return -1;
00403     }
00404 
00405     if(s->avctx->scenechange_threshold < 1000000000 && (s->flags & CODEC_FLAG_CLOSED_GOP)){
00406         av_log(avctx, AV_LOG_ERROR, "closed gop with scene change detection are not supported yet, set threshold to 1000000000\n");
00407         return -1;
00408     }
00409 
00410     if((s->flags2 & CODEC_FLAG2_INTRA_VLC) && s->codec_id != CODEC_ID_MPEG2VIDEO){
00411         av_log(avctx, AV_LOG_ERROR, "intra vlc table not supported by codec\n");
00412         return -1;
00413     }
00414 
00415     if(s->flags & CODEC_FLAG_LOW_DELAY){
00416         if (s->codec_id != CODEC_ID_MPEG2VIDEO){
00417             av_log(avctx, AV_LOG_ERROR, "low delay forcing is only available for mpeg2\n");
00418             return -1;
00419         }
00420         if (s->max_b_frames != 0){
00421             av_log(avctx, AV_LOG_ERROR, "b frames cannot be used with low delay\n");
00422             return -1;
00423         }
00424     }
00425 
00426     if(s->q_scale_type == 1){
00427         if(s->codec_id != CODEC_ID_MPEG2VIDEO){
00428             av_log(avctx, AV_LOG_ERROR, "non linear quant is only available for mpeg2\n");
00429             return -1;
00430         }
00431         if(avctx->qmax > 12){
00432             av_log(avctx, AV_LOG_ERROR, "non linear quant only supports qmax <= 12 currently\n");
00433             return -1;
00434         }
00435     }
00436 
00437     if(s->avctx->thread_count > 1 && s->codec_id != CODEC_ID_MPEG4
00438        && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO
00439        && (s->codec_id != CODEC_ID_H263P || !(s->flags & CODEC_FLAG_H263P_SLICE_STRUCT))){
00440         av_log(avctx, AV_LOG_ERROR, "multi threaded encoding not supported by codec\n");
00441         return -1;
00442     }
00443 
00444     if(s->avctx->thread_count > 1)
00445         s->rtp_mode= 1;
00446 
00447     if(!avctx->time_base.den || !avctx->time_base.num){
00448         av_log(avctx, AV_LOG_ERROR, "framerate not set\n");
00449         return -1;
00450     }
00451 
00452     i= (INT_MAX/2+128)>>8;
00453     if(avctx->me_threshold >= i){
00454         av_log(avctx, AV_LOG_ERROR, "me_threshold too large, max is %d\n", i - 1);
00455         return -1;
00456     }
00457     if(avctx->mb_threshold >= i){
00458         av_log(avctx, AV_LOG_ERROR, "mb_threshold too large, max is %d\n", i - 1);
00459         return -1;
00460     }
00461 
00462     if(avctx->b_frame_strategy && (avctx->flags&CODEC_FLAG_PASS2)){
00463         av_log(avctx, AV_LOG_INFO, "notice: b_frame_strategy only affects the first pass\n");
00464         avctx->b_frame_strategy = 0;
00465     }
00466 
00467     i= av_gcd(avctx->time_base.den, avctx->time_base.num);
00468     if(i > 1){
00469         av_log(avctx, AV_LOG_INFO, "removing common factors from framerate\n");
00470         avctx->time_base.den /= i;
00471         avctx->time_base.num /= i;
00472 //        return -1;
00473     }
00474 
00475     if(s->codec_id==CODEC_ID_MJPEG){
00476         s->intra_quant_bias= 1<<(QUANT_BIAS_SHIFT-1); //(a + x/2)/x
00477         s->inter_quant_bias= 0;
00478     }else if(s->mpeg_quant || s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO){
00479         s->intra_quant_bias= 3<<(QUANT_BIAS_SHIFT-3); //(a + x*3/8)/x
00480         s->inter_quant_bias= 0;
00481     }else{
00482         s->intra_quant_bias=0;
00483         s->inter_quant_bias=-(1<<(QUANT_BIAS_SHIFT-2)); //(a - x/4)/x
00484     }
00485 
00486     if(avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)
00487         s->intra_quant_bias= avctx->intra_quant_bias;
00488     if(avctx->inter_quant_bias != FF_DEFAULT_QUANT_BIAS)
00489         s->inter_quant_bias= avctx->inter_quant_bias;
00490 
00491     avcodec_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift, &chroma_v_shift);
00492 
00493     if(avctx->codec_id == CODEC_ID_MPEG4 && s->avctx->time_base.den > (1<<16)-1){
00494         av_log(avctx, AV_LOG_ERROR, "timebase not supported by mpeg 4 standard\n");
00495         return -1;
00496     }
00497     s->time_increment_bits = av_log2(s->avctx->time_base.den - 1) + 1;
00498 
00499     switch(avctx->codec->id) {
00500     case CODEC_ID_MPEG1VIDEO:
00501         s->out_format = FMT_MPEG1;
00502         s->low_delay= !!(s->flags & CODEC_FLAG_LOW_DELAY);
00503         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
00504         break;
00505     case CODEC_ID_MPEG2VIDEO:
00506         s->out_format = FMT_MPEG1;
00507         s->low_delay= !!(s->flags & CODEC_FLAG_LOW_DELAY);
00508         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
00509         s->rtp_mode= 1;
00510         break;
00511     case CODEC_ID_LJPEG:
00512     case CODEC_ID_MJPEG:
00513         s->out_format = FMT_MJPEG;
00514         s->intra_only = 1; /* force intra only for jpeg */
00515         s->mjpeg_vsample[0] = 2;
00516         s->mjpeg_vsample[1] = 2>>chroma_v_shift;
00517         s->mjpeg_vsample[2] = 2>>chroma_v_shift;
00518         s->mjpeg_hsample[0] = 2;
00519         s->mjpeg_hsample[1] = 2>>chroma_h_shift;
00520         s->mjpeg_hsample[2] = 2>>chroma_h_shift;
00521         if (!(CONFIG_MJPEG_ENCODER || CONFIG_LJPEG_ENCODER)
00522             || ff_mjpeg_encode_init(s) < 0)
00523             return -1;
00524         avctx->delay=0;
00525         s->low_delay=1;
00526         break;
00527     case CODEC_ID_H261:
00528         if (!CONFIG_H261_ENCODER)  return -1;
00529         if (ff_h261_get_picture_format(s->width, s->height) < 0) {
00530             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);
00531             return -1;
00532         }
00533         s->out_format = FMT_H261;
00534         avctx->delay=0;
00535         s->low_delay=1;
00536         break;
00537     case CODEC_ID_H263:
00538         if (!CONFIG_H263_ENCODER)  return -1;
00539         if (h263_get_picture_format(s->width, s->height) == 7) {
00540             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);
00541             return -1;
00542         }
00543         s->out_format = FMT_H263;
00544         s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
00545         avctx->delay=0;
00546         s->low_delay=1;
00547         break;
00548     case CODEC_ID_H263P:
00549         s->out_format = FMT_H263;
00550         s->h263_plus = 1;
00551         /* Fx */
00552         s->umvplus = (avctx->flags & CODEC_FLAG_H263P_UMV) ? 1:0;
00553         s->h263_aic= (avctx->flags & CODEC_FLAG_AC_PRED) ? 1:0;
00554         s->modified_quant= s->h263_aic;
00555         s->alt_inter_vlc= (avctx->flags & CODEC_FLAG_H263P_AIV) ? 1:0;
00556         s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
00557         s->loop_filter= (avctx->flags & CODEC_FLAG_LOOP_FILTER) ? 1:0;
00558         s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
00559         s->h263_slice_structured= (s->flags & CODEC_FLAG_H263P_SLICE_STRUCT) ? 1:0;
00560 
00561         /* /Fx */
00562         /* These are just to be sure */
00563         avctx->delay=0;
00564         s->low_delay=1;
00565         break;
00566     case CODEC_ID_FLV1:
00567         s->out_format = FMT_H263;
00568         s->h263_flv = 2; /* format = 1; 11-bit codes */
00569         s->unrestricted_mv = 1;
00570         s->rtp_mode=0; /* don't allow GOB */
00571         avctx->delay=0;
00572         s->low_delay=1;
00573         break;
00574     case CODEC_ID_RV10:
00575         s->out_format = FMT_H263;
00576         avctx->delay=0;
00577         s->low_delay=1;
00578         break;
00579     case CODEC_ID_RV20:
00580         s->out_format = FMT_H263;
00581         avctx->delay=0;
00582         s->low_delay=1;
00583         s->modified_quant=1;
00584         s->h263_aic=1;
00585         s->h263_plus=1;
00586         s->loop_filter=1;
00587         s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
00588         break;
00589     case CODEC_ID_MPEG4:
00590         s->out_format = FMT_H263;
00591         s->h263_pred = 1;
00592         s->unrestricted_mv = 1;
00593         s->low_delay= s->max_b_frames ? 0 : 1;
00594         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
00595         break;
00596     case CODEC_ID_MSMPEG4V1:
00597         s->out_format = FMT_H263;
00598         s->h263_msmpeg4 = 1;
00599         s->h263_pred = 1;
00600         s->unrestricted_mv = 1;
00601         s->msmpeg4_version= 1;
00602         avctx->delay=0;
00603         s->low_delay=1;
00604         break;
00605     case CODEC_ID_MSMPEG4V2:
00606         s->out_format = FMT_H263;
00607         s->h263_msmpeg4 = 1;
00608         s->h263_pred = 1;
00609         s->unrestricted_mv = 1;
00610         s->msmpeg4_version= 2;
00611         avctx->delay=0;
00612         s->low_delay=1;
00613         break;
00614     case CODEC_ID_MSMPEG4V3:
00615         s->out_format = FMT_H263;
00616         s->h263_msmpeg4 = 1;
00617         s->h263_pred = 1;
00618         s->unrestricted_mv = 1;
00619         s->msmpeg4_version= 3;
00620         s->flipflop_rounding=1;
00621         avctx->delay=0;
00622         s->low_delay=1;
00623         break;
00624     case CODEC_ID_WMV1:
00625         s->out_format = FMT_H263;
00626         s->h263_msmpeg4 = 1;
00627         s->h263_pred = 1;
00628         s->unrestricted_mv = 1;
00629         s->msmpeg4_version= 4;
00630         s->flipflop_rounding=1;
00631         avctx->delay=0;
00632         s->low_delay=1;
00633         break;
00634     case CODEC_ID_WMV2:
00635         s->out_format = FMT_H263;
00636         s->h263_msmpeg4 = 1;
00637         s->h263_pred = 1;
00638         s->unrestricted_mv = 1;
00639         s->msmpeg4_version= 5;
00640         s->flipflop_rounding=1;
00641         avctx->delay=0;
00642         s->low_delay=1;
00643         break;
00644     default:
00645         return -1;
00646     }
00647 
00648     avctx->has_b_frames= !s->low_delay;
00649 
00650     s->encoding = 1;
00651 
00652     /* init */
00653     if (MPV_common_init(s) < 0)
00654         return -1;
00655 
00656     if(!s->dct_quantize)
00657         s->dct_quantize = dct_quantize_c;
00658     if(!s->denoise_dct)
00659         s->denoise_dct = denoise_dct_c;
00660     s->fast_dct_quantize = s->dct_quantize;
00661     if(avctx->trellis)
00662         s->dct_quantize = dct_quantize_trellis_c;
00663 
00664     if((CONFIG_H263P_ENCODER || CONFIG_RV20_ENCODER) && s->modified_quant)
00665         s->chroma_qscale_table= ff_h263_chroma_qscale_table;
00666     s->progressive_frame=
00667     s->progressive_sequence= !(avctx->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME|CODEC_FLAG_ALT_SCAN));
00668     s->quant_precision=5;
00669 
00670     ff_set_cmp(&s->dsp, s->dsp.ildct_cmp, s->avctx->ildct_cmp);
00671     ff_set_cmp(&s->dsp, s->dsp.frame_skip_cmp, s->avctx->frame_skip_cmp);
00672 
00673     if (CONFIG_H261_ENCODER && s->out_format == FMT_H261)
00674         ff_h261_encode_init(s);
00675     if (CONFIG_ANY_H263_ENCODER && s->out_format == FMT_H263)
00676         h263_encode_init(s);
00677     if (CONFIG_MSMPEG4_ENCODER && s->msmpeg4_version)
00678         ff_msmpeg4_encode_init(s);
00679     if ((CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
00680         && s->out_format == FMT_MPEG1)
00681         ff_mpeg1_encode_init(s);
00682 
00683     /* init q matrix */
00684     for(i=0;i<64;i++) {
00685         int j= s->dsp.idct_permutation[i];
00686         if(CONFIG_MPEG4_ENCODER && s->codec_id==CODEC_ID_MPEG4 && s->mpeg_quant){
00687             s->intra_matrix[j] = ff_mpeg4_default_intra_matrix[i];
00688             s->inter_matrix[j] = ff_mpeg4_default_non_intra_matrix[i];
00689         }else if(s->out_format == FMT_H263 || s->out_format == FMT_H261){
00690             s->intra_matrix[j] =
00691             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
00692         }else
00693         { /* mpeg1/2 */
00694             s->intra_matrix[j] = ff_mpeg1_default_intra_matrix[i];
00695             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
00696         }
00697         if(s->avctx->intra_matrix)
00698             s->intra_matrix[j] = s->avctx->intra_matrix[i];
00699         if(s->avctx->inter_matrix)
00700             s->inter_matrix[j] = s->avctx->inter_matrix[i];
00701     }
00702 
00703     /* precompute matrix */
00704     /* for mjpeg, we do include qscale in the matrix */
00705     if (s->out_format != FMT_MJPEG) {
00706         ff_convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
00707                        s->intra_matrix, s->intra_quant_bias, avctx->qmin, 31, 1);
00708         ff_convert_matrix(&s->dsp, s->q_inter_matrix, s->q_inter_matrix16,
00709                        s->inter_matrix, s->inter_quant_bias, avctx->qmin, 31, 0);
00710     }
00711 
00712     if(ff_rate_control_init(s) < 0)
00713         return -1;
00714 
00715     return 0;
00716 }
00717 
00718 av_cold int MPV_encode_end(AVCodecContext *avctx)
00719 {
00720     MpegEncContext *s = avctx->priv_data;
00721 
00722     ff_rate_control_uninit(s);
00723 
00724     MPV_common_end(s);
00725     if ((CONFIG_MJPEG_ENCODER || CONFIG_LJPEG_ENCODER) && s->out_format == FMT_MJPEG)
00726         ff_mjpeg_encode_close(s);
00727 
00728     av_freep(&avctx->extradata);
00729 
00730     return 0;
00731 }
00732 
00733 static int get_sae(uint8_t *src, int ref, int stride){
00734     int x,y;
00735     int acc=0;
00736 
00737     for(y=0; y<16; y++){
00738         for(x=0; x<16; x++){
00739             acc+= FFABS(src[x+y*stride] - ref);
00740         }
00741     }
00742 
00743     return acc;
00744 }
00745 
00746 static int get_intra_count(MpegEncContext *s, uint8_t *src, uint8_t *ref, int stride){
00747     int x, y, w, h;
00748     int acc=0;
00749 
00750     w= s->width &~15;
00751     h= s->height&~15;
00752 
00753     for(y=0; y<h; y+=16){
00754         for(x=0; x<w; x+=16){
00755             int offset= x + y*stride;
00756             int sad = s->dsp.sad[0](NULL, src + offset, ref + offset, stride, 16);
00757             int mean= (s->dsp.pix_sum(src + offset, stride) + 128)>>8;
00758             int sae = get_sae(src + offset, mean, stride);
00759 
00760             acc+= sae + 500 < sad;
00761         }
00762     }
00763     return acc;
00764 }
00765 
00766 
00767 static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
00768     AVFrame *pic=NULL;
00769     int64_t pts;
00770     int i;
00771     const int encoding_delay= s->max_b_frames;
00772     int direct=1;
00773 
00774     if(pic_arg){
00775         pts= pic_arg->pts;
00776         pic_arg->display_picture_number= s->input_picture_number++;
00777 
00778         if(pts != AV_NOPTS_VALUE){
00779             if(s->user_specified_pts != AV_NOPTS_VALUE){
00780                 int64_t time= pts;
00781                 int64_t last= s->user_specified_pts;
00782 
00783                 if(time <= last){
00784                     av_log(s->avctx, AV_LOG_ERROR, "Error, Invalid timestamp=%"PRId64", last=%"PRId64"\n", pts, s->user_specified_pts);
00785                     return -1;
00786                 }
00787             }
00788             s->user_specified_pts= pts;
00789         }else{
00790             if(s->user_specified_pts != AV_NOPTS_VALUE){
00791                 s->user_specified_pts=
00792                 pts= s->user_specified_pts + 1;
00793                 av_log(s->avctx, AV_LOG_INFO, "Warning: AVFrame.pts=? trying to guess (%"PRId64")\n", pts);
00794             }else{
00795                 pts= pic_arg->display_picture_number;
00796             }
00797         }
00798     }
00799 
00800   if(pic_arg){
00801     if(encoding_delay && !(s->flags&CODEC_FLAG_INPUT_PRESERVED)) direct=0;
00802     if(pic_arg->linesize[0] != s->linesize) direct=0;
00803     if(pic_arg->linesize[1] != s->uvlinesize) direct=0;
00804     if(pic_arg->linesize[2] != s->uvlinesize) direct=0;
00805 
00806 //    av_log(AV_LOG_DEBUG, "%d %d %d %d\n",pic_arg->linesize[0], pic_arg->linesize[1], s->linesize, s->uvlinesize);
00807 
00808     if(direct){
00809         i= ff_find_unused_picture(s, 1);
00810 
00811         pic= (AVFrame*)&s->picture[i];
00812         pic->reference= 3;
00813 
00814         for(i=0; i<4; i++){
00815             pic->data[i]= pic_arg->data[i];
00816             pic->linesize[i]= pic_arg->linesize[i];
00817         }
00818         alloc_picture(s, (Picture*)pic, 1);
00819     }else{
00820         i= ff_find_unused_picture(s, 0);
00821 
00822         pic= (AVFrame*)&s->picture[i];
00823         pic->reference= 3;
00824 
00825         alloc_picture(s, (Picture*)pic, 0);
00826 
00827         if(   pic->data[0] + INPLACE_OFFSET == pic_arg->data[0]
00828            && pic->data[1] + INPLACE_OFFSET == pic_arg->data[1]
00829            && pic->data[2] + INPLACE_OFFSET == pic_arg->data[2]){
00830        // empty
00831         }else{
00832             int h_chroma_shift, v_chroma_shift;
00833             avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &h_chroma_shift, &v_chroma_shift);
00834 
00835             for(i=0; i<3; i++){
00836                 int src_stride= pic_arg->linesize[i];
00837                 int dst_stride= i ? s->uvlinesize : s->linesize;
00838                 int h_shift= i ? h_chroma_shift : 0;
00839                 int v_shift= i ? v_chroma_shift : 0;
00840                 int w= s->width >>h_shift;
00841                 int h= s->height>>v_shift;
00842                 uint8_t *src= pic_arg->data[i];
00843                 uint8_t *dst= pic->data[i];
00844 
00845                 if(!s->avctx->rc_buffer_size)
00846                     dst +=INPLACE_OFFSET;
00847 
00848                 if(src_stride==dst_stride)
00849                     memcpy(dst, src, src_stride*h);
00850                 else{
00851                     while(h--){
00852                         memcpy(dst, src, w);
00853                         dst += dst_stride;
00854                         src += src_stride;
00855                     }
00856                 }
00857             }
00858         }
00859     }
00860     copy_picture_attributes(s, pic, pic_arg);
00861     pic->pts= pts; //we set this here to avoid modifiying pic_arg
00862   }
00863 
00864     /* shift buffer entries */
00865     for(i=1; i<MAX_PICTURE_COUNT /*s->encoding_delay+1*/; i++)
00866         s->input_picture[i-1]= s->input_picture[i];
00867 
00868     s->input_picture[encoding_delay]= (Picture*)pic;
00869 
00870     return 0;
00871 }
00872 
00873 static int skip_check(MpegEncContext *s, Picture *p, Picture *ref){
00874     int x, y, plane;
00875     int score=0;
00876     int64_t score64=0;
00877 
00878     for(plane=0; plane<3; plane++){
00879         const int stride= p->linesize[plane];
00880         const int bw= plane ? 1 : 2;
00881         for(y=0; y<s->mb_height*bw; y++){
00882             for(x=0; x<s->mb_width*bw; x++){
00883                 int off= p->type == FF_BUFFER_TYPE_SHARED ? 0: 16;
00884                 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);
00885 
00886                 switch(s->avctx->frame_skip_exp){
00887                     case 0: score= FFMAX(score, v); break;
00888                     case 1: score+= FFABS(v);break;
00889                     case 2: score+= v*v;break;
00890                     case 3: score64+= FFABS(v*v*(int64_t)v);break;
00891                     case 4: score64+= v*v*(int64_t)(v*v);break;
00892                 }
00893             }
00894         }
00895     }
00896 
00897     if(score) score64= score;
00898 
00899     if(score64 < s->avctx->frame_skip_threshold)
00900         return 1;
00901     if(score64 < ((s->avctx->frame_skip_factor * (int64_t)s->lambda)>>8))
00902         return 1;
00903     return 0;
00904 }
00905 
00906 static int estimate_best_b_count(MpegEncContext *s){
00907     AVCodec *codec= avcodec_find_encoder(s->avctx->codec_id);
00908     AVCodecContext *c= avcodec_alloc_context();
00909     AVFrame input[FF_MAX_B_FRAMES+2];
00910     const int scale= s->avctx->brd_scale;
00911     int i, j, out_size, p_lambda, b_lambda, lambda2;
00912     int outbuf_size= s->width * s->height; //FIXME
00913     uint8_t *outbuf= av_malloc(outbuf_size);
00914     int64_t best_rd= INT64_MAX;
00915     int best_b_count= -1;
00916 
00917     assert(scale>=0 && scale <=3);
00918 
00919 //    emms_c();
00920     p_lambda= s->last_lambda_for[FF_P_TYPE]; //s->next_picture_ptr->quality;
00921     b_lambda= s->last_lambda_for[FF_B_TYPE]; //p_lambda *FFABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset;
00922     if(!b_lambda) b_lambda= p_lambda; //FIXME we should do this somewhere else
00923     lambda2= (b_lambda*b_lambda + (1<<FF_LAMBDA_SHIFT)/2 ) >> FF_LAMBDA_SHIFT;
00924 
00925     c->width = s->width >> scale;
00926     c->height= s->height>> scale;
00927     c->flags= CODEC_FLAG_QSCALE | CODEC_FLAG_PSNR | CODEC_FLAG_INPUT_PRESERVED /*| CODEC_FLAG_EMU_EDGE*/;
00928     c->flags|= s->avctx->flags & CODEC_FLAG_QPEL;
00929     c->mb_decision= s->avctx->mb_decision;
00930     c->me_cmp= s->avctx->me_cmp;
00931     c->mb_cmp= s->avctx->mb_cmp;
00932     c->me_sub_cmp= s->avctx->me_sub_cmp;
00933     c->pix_fmt = PIX_FMT_YUV420P;
00934     c->time_base= s->avctx->time_base;
00935     c->max_b_frames= s->max_b_frames;
00936 
00937     if (avcodec_open(c, codec) < 0)
00938         return -1;
00939 
00940     for(i=0; i<s->max_b_frames+2; i++){
00941         int ysize= c->width*c->height;
00942         int csize= (c->width/2)*(c->height/2);
00943         Picture pre_input, *pre_input_ptr= i ? s->input_picture[i-1] : s->next_picture_ptr;
00944 
00945         avcodec_get_frame_defaults(&input[i]);
00946         input[i].data[0]= av_malloc(ysize + 2*csize);
00947         input[i].data[1]= input[i].data[0] + ysize;
00948         input[i].data[2]= input[i].data[1] + csize;
00949         input[i].linesize[0]= c->width;
00950         input[i].linesize[1]=
00951         input[i].linesize[2]= c->width/2;
00952 
00953         if(pre_input_ptr && (!i || s->input_picture[i-1])) {
00954             pre_input= *pre_input_ptr;
00955 
00956             if(pre_input.type != FF_BUFFER_TYPE_SHARED && i) {
00957                 pre_input.data[0]+=INPLACE_OFFSET;
00958                 pre_input.data[1]+=INPLACE_OFFSET;
00959                 pre_input.data[2]+=INPLACE_OFFSET;
00960             }
00961 
00962             s->dsp.shrink[scale](input[i].data[0], input[i].linesize[0], pre_input.data[0], pre_input.linesize[0], c->width, c->height);
00963             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);
00964             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);
00965         }
00966     }
00967 
00968     for(j=0; j<s->max_b_frames+1; j++){
00969         int64_t rd=0;
00970 
00971         if(!s->input_picture[j])
00972             break;
00973 
00974         c->error[0]= c->error[1]= c->error[2]= 0;
00975 
00976         input[0].pict_type= FF_I_TYPE;
00977         input[0].quality= 1 * FF_QP2LAMBDA;
00978         out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[0]);
00979 //        rd += (out_size * lambda2) >> FF_LAMBDA_SHIFT;
00980 
00981         for(i=0; i<s->max_b_frames+1; i++){
00982             int is_p= i % (j+1) == j || i==s->max_b_frames;
00983 
00984             input[i+1].pict_type= is_p ? FF_P_TYPE : FF_B_TYPE;
00985             input[i+1].quality= is_p ? p_lambda : b_lambda;
00986             out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[i+1]);
00987             rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
00988         }
00989 
00990         /* get the delayed frames */
00991         while(out_size){
00992             out_size = avcodec_encode_video(c, outbuf, outbuf_size, NULL);
00993             rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
00994         }
00995 
00996         rd += c->error[0] + c->error[1] + c->error[2];
00997 
00998         if(rd < best_rd){
00999             best_rd= rd;
01000             best_b_count= j;
01001         }
01002     }
01003 
01004     av_freep(&outbuf);
01005     avcodec_close(c);
01006     av_freep(&c);
01007 
01008     for(i=0; i<s->max_b_frames+2; i++){
01009         av_freep(&input[i].data[0]);
01010     }
01011 
01012     return best_b_count;
01013 }
01014 
01015 static void select_input_picture(MpegEncContext *s){
01016     int i;
01017 
01018     for(i=1; i<MAX_PICTURE_COUNT; i++)
01019         s->reordered_input_picture[i-1]= s->reordered_input_picture[i];
01020     s->reordered_input_picture[MAX_PICTURE_COUNT-1]= NULL;
01021 
01022     /* set next picture type & ordering */
01023     if(s->reordered_input_picture[0]==NULL && s->input_picture[0]){
01024         if(/*s->picture_in_gop_number >= s->gop_size ||*/ s->next_picture_ptr==NULL || s->intra_only){
01025             s->reordered_input_picture[0]= s->input_picture[0];
01026             s->reordered_input_picture[0]->pict_type= FF_I_TYPE;
01027             s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
01028         }else{
01029             int b_frames;
01030 
01031             if(s->avctx->frame_skip_threshold || s->avctx->frame_skip_factor){
01032                 if(s->picture_in_gop_number < s->gop_size && skip_check(s, s->input_picture[0], s->next_picture_ptr)){
01033                 //FIXME check that te gop check above is +-1 correct
01034 //av_log(NULL, AV_LOG_DEBUG, "skip %p %"PRId64"\n", s->input_picture[0]->data[0], s->input_picture[0]->pts);
01035 
01036                     if(s->input_picture[0]->type == FF_BUFFER_TYPE_SHARED){
01037                         for(i=0; i<4; i++)
01038                             s->input_picture[0]->data[i]= NULL;
01039                         s->input_picture[0]->type= 0;
01040                     }else{
01041                         assert(   s->input_picture[0]->type==FF_BUFFER_TYPE_USER
01042                                || s->input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
01043 
01044                         s->avctx->release_buffer(s->avctx, (AVFrame*)s->input_picture[0]);
01045                     }
01046 
01047                     emms_c();
01048                     ff_vbv_update(s, 0);
01049 
01050                     goto no_output_pic;
01051                 }
01052             }
01053 
01054             if(s->flags&CODEC_FLAG_PASS2){
01055                 for(i=0; i<s->max_b_frames+1; i++){
01056                     int pict_num= s->input_picture[0]->display_picture_number + i;
01057 
01058                     if(pict_num >= s->rc_context.num_entries)
01059                         break;
01060                     if(!s->input_picture[i]){
01061                         s->rc_context.entry[pict_num-1].new_pict_type = FF_P_TYPE;
01062                         break;
01063                     }
01064 
01065                     s->input_picture[i]->pict_type=
01066                         s->rc_context.entry[pict_num].new_pict_type;
01067                 }
01068             }
01069 
01070             if(s->avctx->b_frame_strategy==0){
01071                 b_frames= s->max_b_frames;
01072                 while(b_frames && !s->input_picture[b_frames]) b_frames--;
01073             }else if(s->avctx->b_frame_strategy==1){
01074                 for(i=1; i<s->max_b_frames+1; i++){
01075                     if(s->input_picture[i] && s->input_picture[i]->b_frame_score==0){
01076                         s->input_picture[i]->b_frame_score=
01077                             get_intra_count(s, s->input_picture[i  ]->data[0],
01078                                                s->input_picture[i-1]->data[0], s->linesize) + 1;
01079                     }
01080                 }
01081                 for(i=0; i<s->max_b_frames+1; i++){
01082                     if(s->input_picture[i]==NULL || s->input_picture[i]->b_frame_score - 1 > s->mb_num/s->avctx->b_sensitivity) break;
01083                 }
01084 
01085                 b_frames= FFMAX(0, i-1);
01086 
01087                 /* reset scores */
01088                 for(i=0; i<b_frames+1; i++){
01089                     s->input_picture[i]->b_frame_score=0;
01090                 }
01091             }else if(s->avctx->b_frame_strategy==2){
01092                 b_frames= estimate_best_b_count(s);
01093             }else{
01094                 av_log(s->avctx, AV_LOG_ERROR, "illegal b frame strategy\n");
01095                 b_frames=0;
01096             }
01097 
01098             emms_c();
01099 //static int b_count=0;
01100 //b_count+= b_frames;
01101 //av_log(s->avctx, AV_LOG_DEBUG, "b_frames: %d\n", b_count);
01102 
01103             for(i= b_frames - 1; i>=0; i--){
01104                 int type= s->input_picture[i]->pict_type;
01105                 if(type && type != FF_B_TYPE)
01106                     b_frames= i;
01107             }
01108             if(s->input_picture[b_frames]->pict_type == FF_B_TYPE && b_frames == s->max_b_frames){
01109                 av_log(s->avctx, AV_LOG_ERROR, "warning, too many b frames in a row\n");
01110             }
01111 
01112             if(s->picture_in_gop_number + b_frames >= s->gop_size){
01113               if((s->flags2 & CODEC_FLAG2_STRICT_GOP) && s->gop_size > s->picture_in_gop_number){
01114                     b_frames= s->gop_size - s->picture_in_gop_number - 1;
01115               }else{
01116                 if(s->flags & CODEC_FLAG_CLOSED_GOP)
01117                     b_frames=0;
01118                 s->input_picture[b_frames]->pict_type= FF_I_TYPE;
01119               }
01120             }
01121 
01122             if(   (s->flags & CODEC_FLAG_CLOSED_GOP)
01123                && b_frames
01124                && s->input_picture[b_frames]->pict_type== FF_I_TYPE)
01125                 b_frames--;
01126 
01127             s->reordered_input_picture[0]= s->input_picture[b_frames];
01128             if(s->reordered_input_picture[0]->pict_type != FF_I_TYPE)
01129                 s->reordered_input_picture[0]->pict_type= FF_P_TYPE;
01130             s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
01131             for(i=0; i<b_frames; i++){
01132                 s->reordered_input_picture[i+1]= s->input_picture[i];
01133                 s->reordered_input_picture[i+1]->pict_type= FF_B_TYPE;
01134                 s->reordered_input_picture[i+1]->coded_picture_number= s->coded_picture_number++;
01135             }
01136         }
01137     }
01138 no_output_pic:
01139     if(s->reordered_input_picture[0]){
01140         s->reordered_input_picture[0]->reference= s->reordered_input_picture[0]->pict_type!=FF_B_TYPE ? 3 : 0;
01141 
01142         ff_copy_picture(&s->new_picture, s->reordered_input_picture[0]);
01143 
01144         if(s->reordered_input_picture[0]->type == FF_BUFFER_TYPE_SHARED || s->avctx->rc_buffer_size){
01145             // input is a shared pix, so we can't modifiy it -> alloc a new one & ensure that the shared one is reuseable
01146 
01147             int i= ff_find_unused_picture(s, 0);
01148             Picture *pic= &s->picture[i];
01149 
01150             pic->reference              = s->reordered_input_picture[0]->reference;
01151             alloc_picture(s, pic, 0);
01152 
01153             /* mark us unused / free shared pic */
01154             if(s->reordered_input_picture[0]->type == FF_BUFFER_TYPE_INTERNAL)
01155                 s->avctx->release_buffer(s->avctx, (AVFrame*)s->reordered_input_picture[0]);
01156             for(i=0; i<4; i++)
01157                 s->reordered_input_picture[0]->data[i]= NULL;
01158             s->reordered_input_picture[0]->type= 0;
01159 
01160             copy_picture_attributes(s, (AVFrame*)pic, (AVFrame*)s->reordered_input_picture[0]);
01161 
01162             s->current_picture_ptr= pic;
01163         }else{
01164             // input is not a shared pix -> reuse buffer for current_pix
01165 
01166             assert(   s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_USER
01167                    || s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
01168 
01169             s->current_picture_ptr= s->reordered_input_picture[0];
01170             for(i=0; i<4; i++){
01171                 s->new_picture.data[i]+= INPLACE_OFFSET;
01172             }
01173         }
01174         ff_copy_picture(&s->current_picture, s->current_picture_ptr);
01175 
01176         s->picture_number= s->new_picture.display_picture_number;
01177 //printf("dpn:%d\n", s->picture_number);
01178     }else{
01179        memset(&s->new_picture, 0, sizeof(Picture));
01180     }
01181 }
01182 
01183 int MPV_encode_picture(AVCodecContext *avctx,
01184                        unsigned char *buf, int buf_size, void *data)
01185 {
01186     MpegEncContext *s = avctx->priv_data;
01187     AVFrame *pic_arg = data;
01188     int i, stuffing_count;
01189 
01190     for(i=0; i<avctx->thread_count; i++){
01191         int start_y= s->thread_context[i]->start_mb_y;
01192         int   end_y= s->thread_context[i]->  end_mb_y;
01193         int h= s->mb_height;
01194         uint8_t *start= buf + (size_t)(((int64_t) buf_size)*start_y/h);
01195         uint8_t *end  = buf + (size_t)(((int64_t) buf_size)*  end_y/h);
01196 
01197         init_put_bits(&s->thread_context[i]->pb, start, end - start);
01198     }
01199 
01200     s->picture_in_gop_number++;
01201 
01202     if(load_input_picture(s, pic_arg) < 0)
01203         return -1;
01204 
01205     select_input_picture(s);
01206 
01207     /* output? */
01208     if(s->new_picture.data[0]){
01209         s->pict_type= s->new_picture.pict_type;
01210 //emms_c();
01211 //printf("qs:%f %f %d\n", s->new_picture.quality, s->current_picture.quality, s->qscale);
01212         MPV_frame_start(s, avctx);
01213 vbv_retry:
01214         if (encode_picture(s, s->picture_number) < 0)
01215             return -1;
01216 
01217         avctx->real_pict_num  = s->picture_number;
01218         avctx->header_bits = s->header_bits;
01219         avctx->mv_bits     = s->mv_bits;
01220         avctx->misc_bits   = s->misc_bits;
01221         avctx->i_tex_bits  = s->i_tex_bits;
01222         avctx->p_tex_bits  = s->p_tex_bits;
01223         avctx->i_count     = s->i_count;
01224         avctx->p_count     = s->mb_num - s->i_count - s->skip_count; //FIXME f/b_count in avctx
01225         avctx->skip_count  = s->skip_count;
01226 
01227         MPV_frame_end(s);
01228 
01229         if (CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG)
01230             ff_mjpeg_encode_picture_trailer(s);
01231 
01232         if(avctx->rc_buffer_size){
01233             RateControlContext *rcc= &s->rc_context;
01234             int max_size= rcc->buffer_index * avctx->rc_max_available_vbv_use;
01235 
01236             if(put_bits_count(&s->pb) > max_size && s->lambda < s->avctx->lmax){
01237                 s->next_lambda= FFMAX(s->lambda+1, s->lambda*(s->qscale+1) / s->qscale);
01238                 if(s->adaptive_quant){
01239                     int i;
01240                     for(i=0; i<s->mb_height*s->mb_stride; i++)
01241                         s->lambda_table[i]= FFMAX(s->lambda_table[i]+1, s->lambda_table[i]*(s->qscale+1) / s->qscale);
01242                 }
01243                 s->mb_skipped = 0;        //done in MPV_frame_start()
01244                 if(s->pict_type==FF_P_TYPE){ //done in encode_picture() so we must undo it
01245                     if(s->flipflop_rounding || s->codec_id == CODEC_ID_H263P || s->codec_id == CODEC_ID_MPEG4)
01246                         s->no_rounding ^= 1;
01247                 }
01248                 if(s->pict_type!=FF_B_TYPE){
01249                     s->time_base= s->last_time_base;
01250                     s->last_non_b_time= s->time - s->pp_time;
01251                 }
01252 //                av_log(NULL, AV_LOG_ERROR, "R:%d ", s->next_lambda);
01253                 for(i=0; i<avctx->thread_count; i++){
01254                     PutBitContext *pb= &s->thread_context[i]->pb;
01255                     init_put_bits(pb, pb->buf, pb->buf_end - pb->buf);
01256                 }
01257                 goto vbv_retry;
01258             }
01259 
01260             assert(s->avctx->rc_max_rate);
01261         }
01262 
01263         if(s->flags&CODEC_FLAG_PASS1)
01264             ff_write_pass1_stats(s);
01265 
01266         for(i=0; i<4; i++){
01267             s->current_picture_ptr->error[i]= s->current_picture.error[i];
01268             avctx->error[i] += s->current_picture_ptr->error[i];
01269         }
01270 
01271         if(s->flags&CODEC_FLAG_PASS1)
01272             assert(avctx->header_bits + avctx->mv_bits + avctx->misc_bits + avctx->i_tex_bits + avctx->p_tex_bits == put_bits_count(&s->pb));
01273         flush_put_bits(&s->pb);
01274         s->frame_bits  = put_bits_count(&s->pb);
01275 
01276         stuffing_count= ff_vbv_update(s, s->frame_bits);
01277         if(stuffing_count){
01278             if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < stuffing_count + 50){
01279                 av_log(s->avctx, AV_LOG_ERROR, "stuffing too large\n");
01280                 return -1;
01281             }
01282 
01283             switch(s->codec_id){
01284             case CODEC_ID_MPEG1VIDEO:
01285             case CODEC_ID_MPEG2VIDEO:
01286                 while(stuffing_count--){
01287                     put_bits(&s->pb, 8, 0);
01288                 }
01289             break;
01290             case CODEC_ID_MPEG4:
01291                 put_bits(&s->pb, 16, 0);
01292                 put_bits(&s->pb, 16, 0x1C3);
01293                 stuffing_count -= 4;
01294                 while(stuffing_count--){
01295                     put_bits(&s->pb, 8, 0xFF);
01296                 }
01297             break;
01298             default:
01299                 av_log(s->avctx, AV_LOG_ERROR, "vbv buffer overflow\n");
01300             }
01301             flush_put_bits(&s->pb);
01302             s->frame_bits  = put_bits_count(&s->pb);
01303         }
01304 
01305         /* update mpeg1/2 vbv_delay for CBR */
01306         if(s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate && s->out_format == FMT_MPEG1
01307            && 90000LL * (avctx->rc_buffer_size-1) <= s->avctx->rc_max_rate*0xFFFFLL){
01308             int vbv_delay;
01309 
01310             assert(s->repeat_first_field==0);
01311 
01312             vbv_delay= lrintf(90000 * s->rc_context.buffer_index / s->avctx->rc_max_rate);
01313             assert(vbv_delay < 0xFFFF);
01314 
01315             s->vbv_delay_ptr[0] &= 0xF8;
01316             s->vbv_delay_ptr[0] |= vbv_delay>>13;
01317             s->vbv_delay_ptr[1]  = vbv_delay>>5;
01318             s->vbv_delay_ptr[2] &= 0x07;
01319             s->vbv_delay_ptr[2] |= vbv_delay<<3;
01320         }
01321         s->total_bits += s->frame_bits;
01322         avctx->frame_bits  = s->frame_bits;
01323     }else{
01324         assert((pbBufPtr(&s->pb) == s->pb.buf));
01325         s->frame_bits=0;
01326     }
01327     assert((s->frame_bits&7)==0);
01328 
01329     return s->frame_bits/8;
01330 }
01331 
01332 static inline void dct_single_coeff_elimination(MpegEncContext *s, int n, int threshold)
01333 {
01334     static const char tab[64]=
01335         {3,2,2,1,1,1,1,1,
01336          1,1,1,1,1,1,1,1,
01337          1,1,1,1,1,1,1,1,
01338          0,0,0,0,0,0,0,0,
01339          0,0,0,0,0,0,0,0,
01340          0,0,0,0,0,0,0,0,
01341          0,0,0,0,0,0,0,0,
01342          0,0,0,0,0,0,0,0};
01343     int score=0;
01344     int run=0;
01345     int i;
01346     DCTELEM *block= s->block[n];
01347     const int last_index= s->block_last_index[n];
01348     int skip_dc;
01349 
01350     if(threshold<0){
01351         skip_dc=0;
01352         threshold= -threshold;
01353     }else
01354         skip_dc=1;
01355 
01356     /* Are all we could set to zero already zero? */
01357     if(last_index<=skip_dc - 1) return;
01358 
01359     for(i=0; i<=last_index; i++){
01360         const int j = s->intra_scantable.permutated[i];
01361         const int level = FFABS(block[j]);
01362         if(level==1){
01363             if(skip_dc && i==0) continue;
01364             score+= tab[run];
01365             run=0;
01366         }else if(level>1){
01367             return;
01368         }else{
01369             run++;
01370         }
01371     }
01372     if(score >= threshold) return;
01373     for(i=skip_dc; i<=last_index; i++){
01374         const int j = s->intra_scantable.permutated[i];
01375         block[j]=0;
01376     }
01377     if(block[0]) s->block_last_index[n]= 0;
01378     else         s->block_last_index[n]= -1;
01379 }
01380 
01381 static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block, int last_index)
01382 {
01383     int i;
01384     const int maxlevel= s->max_qcoeff;
01385     const int minlevel= s->min_qcoeff;
01386     int overflow=0;
01387 
01388     if(s->mb_intra){
01389         i=1; //skip clipping of intra dc
01390     }else
01391         i=0;
01392 
01393     for(;i<=last_index; i++){
01394         const int j= s->intra_scantable.permutated[i];
01395         int level = block[j];
01396 
01397         if     (level>maxlevel){
01398             level=maxlevel;
01399             overflow++;
01400         }else if(level<minlevel){
01401             level=minlevel;
01402             overflow++;
01403         }
01404 
01405         block[j]= level;
01406     }
01407 
01408     if(overflow && s->avctx->mb_decision == FF_MB_DECISION_SIMPLE)
01409         av_log(s->avctx, AV_LOG_INFO, "warning, clipping %d dct coefficients to %d..%d\n", overflow, minlevel, maxlevel);
01410 }
01411 
01412 static void get_visual_weight(int16_t *weight, uint8_t *ptr, int stride){
01413     int x, y;
01414 //FIXME optimize
01415     for(y=0; y<8; y++){
01416         for(x=0; x<8; x++){
01417             int x2, y2;
01418             int sum=0;
01419             int sqr=0;
01420             int count=0;
01421 
01422             for(y2= FFMAX(y-1, 0); y2 < FFMIN(8, y+2); y2++){
01423                 for(x2= FFMAX(x-1, 0); x2 < FFMIN(8, x+2); x2++){
01424                     int v= ptr[x2 + y2*stride];
01425                     sum += v;
01426                     sqr += v*v;
01427                     count++;
01428                 }
01429             }
01430             weight[x + 8*y]= (36*ff_sqrt(count*sqr - sum*sum)) / count;
01431         }
01432     }
01433 }
01434 
01435 static av_always_inline void encode_mb_internal(MpegEncContext *s, int motion_x, int motion_y, int mb_block_height, int mb_block_count)
01436 {
01437     int16_t weight[8][64];
01438     DCTELEM orig[8][64];
01439     const int mb_x= s->mb_x;
01440     const int mb_y= s->mb_y;
01441     int i;
01442     int skip_dct[8];
01443     int dct_offset   = s->linesize*8; //default for progressive frames
01444     uint8_t *ptr_y, *ptr_cb, *ptr_cr;
01445     int wrap_y, wrap_c;
01446 
01447     for(i=0; i<mb_block_count; i++) skip_dct[i]=s->skipdct;
01448 
01449     if(s->adaptive_quant){
01450         const int last_qp= s->qscale;
01451         const int mb_xy= mb_x + mb_y*s->mb_stride;
01452 
01453         s->lambda= s->lambda_table[mb_xy];
01454         update_qscale(s);
01455 
01456         if(!(s->flags&CODEC_FLAG_QP_RD)){
01457             s->qscale= s->current_picture_ptr->qscale_table[mb_xy];
01458             s->dquant= s->qscale - last_qp;
01459 
01460             if(s->out_format==FMT_H263){
01461                 s->dquant= av_clip(s->dquant, -2, 2);
01462 
01463                 if(s->codec_id==CODEC_ID_MPEG4){
01464                     if(!s->mb_intra){
01465                         if(s->pict_type == FF_B_TYPE){
01466                             if(s->dquant&1 || s->mv_dir&MV_DIRECT)
01467                                 s->dquant= 0;
01468                         }
01469                         if(s->mv_type==MV_TYPE_8X8)
01470                             s->dquant=0;
01471                     }
01472                 }
01473             }
01474         }
01475         ff_set_qscale(s, last_qp + s->dquant);
01476     }else if(s->flags&CODEC_FLAG_QP_RD)
01477         ff_set_qscale(s, s->qscale + s->dquant);
01478 
01479     wrap_y = s->linesize;
01480     wrap_c = s->uvlinesize;
01481     ptr_y = s->new_picture.data[0] + (mb_y * 16 * wrap_y) + mb_x * 16;
01482     ptr_cb = s->new_picture.data[1] + (mb_y * mb_block_height * wrap_c) + mb_x * 8;
01483     ptr_cr = s->new_picture.data[2] + (mb_y * mb_block_height * wrap_c) + mb_x * 8;
01484 
01485     if(mb_x*16+16 > s->width || mb_y*16+16 > s->height){
01486         uint8_t *ebuf= s->edge_emu_buffer + 32;
01487         ff_emulated_edge_mc(ebuf            , ptr_y , wrap_y,16,16,mb_x*16,mb_y*16, s->width   , s->height);
01488         ptr_y= ebuf;
01489         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);
01490         ptr_cb= ebuf+18*wrap_y;
01491         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);
01492         ptr_cr= ebuf+18*wrap_y+8;
01493     }
01494 
01495     if (s->mb_intra) {
01496         if(s->flags&CODEC_FLAG_INTERLACED_DCT){
01497             int progressive_score, interlaced_score;
01498 
01499             s->interlaced_dct=0;
01500             progressive_score= s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y, 8)
01501                               +s->dsp.ildct_cmp[4](s, ptr_y + wrap_y*8, NULL, wrap_y, 8) - 400;
01502 
01503             if(progressive_score > 0){
01504                 interlaced_score = s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y*2, 8)
01505                                   +s->dsp.ildct_cmp[4](s, ptr_y + wrap_y  , NULL, wrap_y*2, 8);
01506                 if(progressive_score > interlaced_score){
01507                     s->interlaced_dct=1;
01508 
01509                     dct_offset= wrap_y;
01510                     wrap_y<<=1;
01511                     if (s->chroma_format == CHROMA_422)
01512                         wrap_c<<=1;
01513                 }
01514             }
01515         }
01516 
01517         s->dsp.get_pixels(s->block[0], ptr_y                 , wrap_y);
01518         s->dsp.get_pixels(s->block[1], ptr_y              + 8, wrap_y);
01519         s->dsp.get_pixels(s->block[2], ptr_y + dct_offset    , wrap_y);
01520         s->dsp.get_pixels(s->block[3], ptr_y + dct_offset + 8, wrap_y);
01521 
01522         if(s->flags&CODEC_FLAG_GRAY){
01523             skip_dct[4]= 1;
01524             skip_dct[5]= 1;
01525         }else{
01526             s->dsp.get_pixels(s->block[4], ptr_cb, wrap_c);
01527             s->dsp.get_pixels(s->block[5], ptr_cr, wrap_c);
01528             if(!s->chroma_y_shift){ /* 422 */
01529                 s->dsp.get_pixels(s->block[6], ptr_cb + (dct_offset>>1), wrap_c);
01530                 s->dsp.get_pixels(s->block[7], ptr_cr + (dct_offset>>1), wrap_c);
01531             }
01532         }
01533     }else{
01534         op_pixels_func (*op_pix)[4];
01535         qpel_mc_func (*op_qpix)[16];
01536         uint8_t *dest_y, *dest_cb, *dest_cr;
01537 
01538         dest_y  = s->dest[0];
01539         dest_cb = s->dest[1];
01540         dest_cr = s->dest[2];
01541 
01542         if ((!s->no_rounding) || s->pict_type==FF_B_TYPE){
01543             op_pix = s->dsp.put_pixels_tab;
01544             op_qpix= s->dsp.put_qpel_pixels_tab;
01545         }else{
01546             op_pix = s->dsp.put_no_rnd_pixels_tab;
01547             op_qpix= s->dsp.put_no_rnd_qpel_pixels_tab;
01548         }
01549 
01550         if (s->mv_dir & MV_DIR_FORWARD) {
01551             MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix, op_qpix);
01552             op_pix = s->dsp.avg_pixels_tab;
01553             op_qpix= s->dsp.avg_qpel_pixels_tab;
01554         }
01555         if (s->mv_dir & MV_DIR_BACKWARD) {
01556             MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix, op_qpix);
01557         }
01558 
01559         if(s->flags&CODEC_FLAG_INTERLACED_DCT){
01560             int progressive_score, interlaced_score;
01561 
01562             s->interlaced_dct=0;
01563             progressive_score= s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y, 8)
01564                               +s->dsp.ildct_cmp[0](s, dest_y + wrap_y*8, ptr_y + wrap_y*8, wrap_y, 8) - 400;
01565 
01566             if(s->avctx->ildct_cmp == FF_CMP_VSSE) progressive_score -= 400;
01567 
01568             if(progressive_score>0){
01569                 interlaced_score = s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y*2, 8)
01570                                   +s->dsp.ildct_cmp[0](s, dest_y + wrap_y  , ptr_y + wrap_y  , wrap_y*2, 8);
01571 
01572                 if(progressive_score > interlaced_score){
01573                     s->interlaced_dct=1;
01574 
01575                     dct_offset= wrap_y;
01576                     wrap_y<<=1;
01577                     if (s->chroma_format == CHROMA_422)
01578                         wrap_c<<=1;
01579                 }
01580             }
01581         }
01582 
01583         s->dsp.diff_pixels(s->block[0], ptr_y                 , dest_y                 , wrap_y);
01584         s->dsp.diff_pixels(s->block[1], ptr_y              + 8, dest_y              + 8, wrap_y);
01585         s->dsp.diff_pixels(s->block[2], ptr_y + dct_offset    , dest_y + dct_offset    , wrap_y);
01586         s->dsp.diff_pixels(s->block[3], ptr_y + dct_offset + 8, dest_y + dct_offset + 8, wrap_y);
01587 
01588         if(s->flags&CODEC_FLAG_GRAY){
01589             skip_dct[4]= 1;
01590             skip_dct[5]= 1;
01591         }else{
01592             s->dsp.diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
01593             s->dsp.diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
01594             if(!s->chroma_y_shift){ /* 422 */
01595                 s->dsp.diff_pixels(s->block[6], ptr_cb + (dct_offset>>1), dest_cb + (dct_offset>>1), wrap_c);
01596                 s->dsp.diff_pixels(s->block[7], ptr_cr + (dct_offset>>1), dest_cr + (dct_offset>>1), wrap_c);
01597             }
01598         }
01599         /* pre quantization */
01600         if(s->current_picture.mc_mb_var[s->mb_stride*mb_y+ mb_x]<2*s->qscale*s->qscale){
01601             //FIXME optimize
01602             if(s->dsp.sad[1](NULL, ptr_y               , dest_y               , wrap_y, 8) < 20*s->qscale) skip_dct[0]= 1;
01603             if(s->dsp.sad[1](NULL, ptr_y            + 8, dest_y            + 8, wrap_y, 8) < 20*s->qscale) skip_dct[1]= 1;
01604             if(s->dsp.sad[1](NULL, ptr_y +dct_offset   , dest_y +dct_offset   , wrap_y, 8) < 20*s->qscale) skip_dct[2]= 1;
01605             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;
01606             if(s->dsp.sad[1](NULL, ptr_cb              , dest_cb              , wrap_c, 8) < 20*s->qscale) skip_dct[4]= 1;
01607             if(s->dsp.sad[1](NULL, ptr_cr              , dest_cr              , wrap_c, 8) < 20*s->qscale) skip_dct[5]= 1;
01608             if(!s->chroma_y_shift){ /* 422 */
01609                 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;
01610                 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;
01611             }
01612         }
01613     }
01614 
01615     if(s->avctx->quantizer_noise_shaping){
01616         if(!skip_dct[0]) get_visual_weight(weight[0], ptr_y                 , wrap_y);
01617         if(!skip_dct[1]) get_visual_weight(weight[1], ptr_y              + 8, wrap_y);
01618         if(!skip_dct[2]) get_visual_weight(weight[2], ptr_y + dct_offset    , wrap_y);
01619         if(!skip_dct[3]) get_visual_weight(weight[3], ptr_y + dct_offset + 8, wrap_y);
01620         if(!skip_dct[4]) get_visual_weight(weight[4], ptr_cb                , wrap_c);
01621         if(!skip_dct[5]) get_visual_weight(weight[5], ptr_cr                , wrap_c);
01622         if(!s->chroma_y_shift){ /* 422 */
01623             if(!skip_dct[6]) get_visual_weight(weight[6], ptr_cb + (dct_offset>>1), wrap_c);
01624             if(!skip_dct[7]) get_visual_weight(weight[7], ptr_cr + (dct_offset>>1), wrap_c);
01625         }
01626         memcpy(orig[0], s->block[0], sizeof(DCTELEM)*64*mb_block_count);
01627     }
01628 
01629     /* DCT & quantize */
01630     assert(s->out_format!=FMT_MJPEG || s->qscale==8);
01631     {
01632         for(i=0;i<mb_block_count;i++) {
01633             if(!skip_dct[i]){
01634                 int overflow;
01635                 s->block_last_index[i] = s->dct_quantize(s, s->block[i], i, s->qscale, &overflow);
01636             // FIXME we could decide to change to quantizer instead of clipping
01637             // JS: I don't think that would be a good idea it could lower quality instead
01638             //     of improve it. Just INTRADC clipping deserves changes in quantizer
01639                 if (overflow) clip_coeffs(s, s->block[i], s->block_last_index[i]);
01640             }else
01641                 s->block_last_index[i]= -1;
01642         }
01643         if(s->avctx->quantizer_noise_shaping){
01644             for(i=0;i<mb_block_count;i++) {
01645                 if(!skip_dct[i]){
01646                     s->block_last_index[i] = dct_quantize_refine(s, s->block[i], weight[i], orig[i], i, s->qscale);
01647                 }
01648             }
01649         }
01650 
01651         if(s->luma_elim_threshold && !s->mb_intra)
01652             for(i=0; i<4; i++)
01653                 dct_single_coeff_elimination(s, i, s->luma_elim_threshold);
01654         if(s->chroma_elim_threshold && !s->mb_intra)
01655             for(i=4; i<mb_block_count; i++)
01656                 dct_single_coeff_elimination(s, i, s->chroma_elim_threshold);
01657 
01658         if(s->flags & CODEC_FLAG_CBP_RD){
01659             for(i=0;i<mb_block_count;i++) {
01660                 if(s->block_last_index[i] == -1)
01661                     s->coded_score[i]= INT_MAX/256;
01662             }
01663         }
01664     }
01665 
01666     if((s->flags&CODEC_FLAG_GRAY) && s->mb_intra){
01667         s->block_last_index[4]=
01668         s->block_last_index[5]= 0;
01669         s->block[4][0]=
01670         s->block[5][0]= (1024 + s->c_dc_scale/2)/ s->c_dc_scale;
01671     }
01672 
01673     //non c quantize code returns incorrect block_last_index FIXME
01674     if(s->alternate_scan && s->dct_quantize != dct_quantize_c){
01675         for(i=0; i<mb_block_count; i++){
01676             int j;
01677             if(s->block_last_index[i]>0){
01678                 for(j=63; j>0; j--){
01679                     if(s->block[i][ s->intra_scantable.permutated[j] ]) break;
01680                 }
01681                 s->block_last_index[i]= j;
01682             }
01683         }
01684     }
01685 
01686     /* huffman encode */
01687     switch(s->codec_id){ //FIXME funct ptr could be slightly faster
01688     case CODEC_ID_MPEG1VIDEO:
01689     case CODEC_ID_MPEG2VIDEO:
01690         if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
01691             mpeg1_encode_mb(s, s->block, motion_x, motion_y);
01692         break;
01693     case CODEC_ID_MPEG4:
01694         if (CONFIG_MPEG4_ENCODER)
01695             mpeg4_encode_mb(s, s->block, motion_x, motion_y);
01696         break;
01697     case CODEC_ID_MSMPEG4V2:
01698     case CODEC_ID_MSMPEG4V3:
01699     case CODEC_ID_WMV1:
01700         if (CONFIG_MSMPEG4_ENCODER)
01701             msmpeg4_encode_mb(s, s->block, motion_x, motion_y);
01702         break;
01703     case CODEC_ID_WMV2:
01704         if (CONFIG_WMV2_ENCODER)
01705             ff_wmv2_encode_mb(s, s->block, motion_x, motion_y);
01706         break;
01707     case CODEC_ID_H261:
01708         if (CONFIG_H261_ENCODER)
01709             ff_h261_encode_mb(s, s->block, motion_x, motion_y);
01710         break;
01711     case CODEC_ID_H263:
01712     case CODEC_ID_H263P:
01713     case CODEC_ID_FLV1:
01714     case CODEC_ID_RV10:
01715     case CODEC_ID_RV20:
01716         if (CONFIG_H263_ENCODER || CONFIG_H263P_ENCODER ||
01717             CONFIG_FLV_ENCODER  || CONFIG_RV10_ENCODER  || CONFIG_RV20_ENCODER)
01718             h263_encode_mb(s, s->block, motion_x, motion_y);
01719         break;
01720     case CODEC_ID_MJPEG:
01721         if (CONFIG_MJPEG_ENCODER)
01722             ff_mjpeg_encode_mb(s, s->block);
01723         break;
01724     default:
01725         assert(0);
01726     }
01727 }
01728 
01729 static av_always_inline void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
01730 {
01731     if (s->chroma_format == CHROMA_420) encode_mb_internal(s, motion_x, motion_y,  8, 6);
01732     else                                encode_mb_internal(s, motion_x, motion_y, 16, 8);
01733 }
01734 
01735 static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type){
01736     int i;
01737 
01738     memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
01739 
01740     /* mpeg1 */
01741     d->mb_skip_run= s->mb_skip_run;
01742     for(i=0; i<3; i++)
01743         d->last_dc[i]= s->last_dc[i];
01744 
01745     /* statistics */
01746     d->mv_bits= s->mv_bits;
01747     d->i_tex_bits= s->i_tex_bits;
01748     d->p_tex_bits= s->p_tex_bits;
01749     d->i_count= s->i_count;
01750     d->f_count= s->f_count;
01751     d->b_count= s->b_count;
01752     d->skip_count= s->skip_count;
01753     d->misc_bits= s->misc_bits;
01754     d->last_bits= 0;
01755 
01756     d->mb_skipped= 0;
01757     d->qscale= s->qscale;
01758     d->dquant= s->dquant;
01759 
01760     d->esc3_level_length= s->esc3_level_length;
01761 }
01762 
01763 static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int type){
01764     int i;
01765 
01766     memcpy(d->mv, s->mv, 2*4*2*sizeof(int));
01767     memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
01768 
01769     /* mpeg1 */
01770     d->mb_skip_run= s->mb_skip_run;
01771     for(i=0; i<3; i++)
01772         d->last_dc[i]= s->last_dc[i];
01773 
01774     /* statistics */
01775     d->mv_bits= s->mv_bits;
01776     d->i_tex_bits= s->i_tex_bits;
01777     d->p_tex_bits= s->p_tex_bits;
01778     d->i_count= s->i_count;
01779     d->f_count= s->f_count;
01780     d->b_count= s->b_count;
01781     d->skip_count= s->skip_count;
01782     d->misc_bits= s->misc_bits;
01783 
01784     d->mb_intra= s->mb_intra;
01785     d->mb_skipped= s->mb_skipped;
01786     d->mv_type= s->mv_type;
01787     d->mv_dir= s->mv_dir;
01788     d->pb= s->pb;
01789     if(s->data_partitioning){
01790         d->pb2= s->pb2;
01791         d->tex_pb= s->tex_pb;
01792     }
01793     d->block= s->block;
01794     for(i=0; i<8; i++)
01795         d->block_last_index[i]= s->block_last_index[i];
01796     d->interlaced_dct= s->interlaced_dct;
01797     d->qscale= s->qscale;
01798 
01799     d->esc3_level_length= s->esc3_level_length;
01800 }
01801 
01802 static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type,
01803                            PutBitContext pb[2], PutBitContext pb2[2], PutBitContext tex_pb[2],
01804                            int *dmin, int *next_block, int motion_x, int motion_y)
01805 {
01806     int score;
01807     uint8_t *dest_backup[3];
01808 
01809     copy_context_before_encode(s, backup, type);
01810 
01811     s->block= s->blocks[*next_block];
01812     s->pb= pb[*next_block];
01813     if(s->data_partitioning){
01814         s->pb2   = pb2   [*next_block];
01815         s->tex_pb= tex_pb[*next_block];
01816     }
01817 
01818     if(*next_block){
01819         memcpy(dest_backup, s->dest, sizeof(s->dest));
01820         s->dest[0] = s->rd_scratchpad;
01821         s->dest[1] = s->rd_scratchpad + 16*s->linesize;
01822         s->dest[2] = s->rd_scratchpad + 16*s->linesize + 8;
01823         assert(s->linesize >= 32); //FIXME
01824     }
01825 
01826     encode_mb(s, motion_x, motion_y);
01827 
01828     score= put_bits_count(&s->pb);
01829     if(s->data_partitioning){
01830         score+= put_bits_count(&s->pb2);
01831         score+= put_bits_count(&s->tex_pb);
01832     }
01833 
01834     if(s->avctx->mb_decision == FF_MB_DECISION_RD){
01835         MPV_decode_mb(s, s->block);
01836 
01837         score *= s->lambda2;
01838         score += sse_mb(s) << FF_LAMBDA_SHIFT;
01839     }
01840 
01841     if(*next_block){
01842         memcpy(s->dest, dest_backup, sizeof(s->dest));
01843     }
01844 
01845     if(score<*dmin){
01846         *dmin= score;
01847         *next_block^=1;
01848 
01849         copy_context_after_encode(best, s, type);
01850     }
01851 }
01852 
01853 static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride){
01854     uint32_t *sq = ff_squareTbl + 256;
01855     int acc=0;
01856     int x,y;
01857 
01858     if(w==16 && h==16)
01859         return s->dsp.sse[0](NULL, src1, src2, stride, 16);
01860     else if(w==8 && h==8)
01861         return s->dsp.sse[1](NULL, src1, src2, stride, 8);
01862 
01863     for(y=0; y<h; y++){
01864         for(x=0; x<w; x++){
01865             acc+= sq[src1[x + y*stride] - src2[x + y*stride]];
01866         }
01867     }
01868 
01869     assert(acc>=0);
01870 
01871     return acc;
01872 }
01873 
01874 static int sse_mb(MpegEncContext *s){
01875     int w= 16;
01876     int h= 16;
01877 
01878     if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
01879     if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
01880 
01881     if(w==16 && h==16)
01882       if(s->avctx->mb_cmp == FF_CMP_NSSE){
01883         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)
01884                +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)
01885                +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);
01886       }else{
01887         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)
01888                +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)
01889                +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);
01890       }
01891     else
01892         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)
01893                +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)
01894                +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);
01895 }
01896 
01897 static int pre_estimate_motion_thread(AVCodecContext *c, void *arg){
01898     MpegEncContext *s= *(void**)arg;
01899 
01900 
01901     s->me.pre_pass=1;
01902     s->me.dia_size= s->avctx->pre_dia_size;
01903     s->first_slice_line=1;
01904     for(s->mb_y= s->end_mb_y-1; s->mb_y >= s->start_mb_y; s->mb_y--) {
01905         for(s->mb_x=s->mb_width-1; s->mb_x >=0 ;s->mb_x--) {
01906             ff_pre_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
01907         }
01908         s->first_slice_line=0;
01909     }
01910 
01911     s->me.pre_pass=0;
01912 
01913     return 0;
01914 }
01915 
01916 static int estimate_motion_thread(AVCodecContext *c, void *arg){
01917     MpegEncContext *s= *(void**)arg;
01918 
01919     ff_check_alignment();
01920 
01921     s->me.dia_size= s->avctx->dia_size;
01922     s->first_slice_line=1;
01923     for(s->mb_y= s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
01924         s->mb_x=0; //for block init below
01925         ff_init_block_index(s);
01926         for(s->mb_x=0; s->mb_x < s->mb_width; s->mb_x++) {
01927             s->block_index[0]+=2;
01928             s->block_index[1]+=2;
01929             s->block_index[2]+=2;
01930             s->block_index[3]+=2;
01931 
01932             /* compute motion vector & mb_type and store in context */
01933             if(s->pict_type==FF_B_TYPE)
01934                 ff_estimate_b_frame_motion(s, s->mb_x, s->mb_y);
01935             else
01936                 ff_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
01937         }
01938         s->first_slice_line=0;
01939     }
01940     return 0;
01941 }
01942 
01943 static int mb_var_thread(AVCodecContext *c, void *arg){
01944     MpegEncContext *s= *(void**)arg;
01945     int mb_x, mb_y;
01946 
01947     ff_check_alignment();
01948 
01949     for(mb_y=s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
01950         for(mb_x=0; mb_x < s->mb_width; mb_x++) {
01951             int xx = mb_x * 16;
01952             int yy = mb_y * 16;
01953             uint8_t *pix = s->new_picture.data[0] + (yy * s->linesize) + xx;
01954             int varc;
01955             int sum = s->dsp.pix_sum(pix, s->linesize);
01956 
01957             varc = (s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)(sum*sum))>>8) + 500 + 128)>>8;
01958 
01959             s->current_picture.mb_var [s->mb_stride * mb_y + mb_x] = varc;
01960             s->current_picture.mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8;
01961             s->me.mb_var_sum_temp    += varc;
01962         }
01963     }
01964     return 0;
01965 }
01966 
01967 static void write_slice_end(MpegEncContext *s){
01968     if(CONFIG_MPEG4_ENCODER && s->codec_id==CODEC_ID_MPEG4){
01969         if(s->partitioned_frame){
01970             ff_mpeg4_merge_partitions(s);
01971         }
01972 
01973         ff_mpeg4_stuffing(&s->pb);
01974     }else if(CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG){
01975         ff_mjpeg_encode_stuffing(&s->pb);
01976     }
01977 
01978     align_put_bits(&s->pb);
01979     flush_put_bits(&s->pb);
01980 
01981     if((s->flags&CODEC_FLAG_PASS1) && !s->partitioned_frame)
01982         s->misc_bits+= get_bits_diff(s);
01983 }
01984 
01985 static int encode_thread(AVCodecContext *c, void *arg){
01986     MpegEncContext *s= *(void**)arg;
01987     int mb_x, mb_y, pdif = 0;
01988     int chr_h= 16>>s->chroma_y_shift;
01989     int i, j;
01990     MpegEncContext best_s, backup_s;
01991     uint8_t bit_buf[2][MAX_MB_BYTES];
01992     uint8_t bit_buf2[2][MAX_MB_BYTES];
01993     uint8_t bit_buf_tex[2][MAX_MB_BYTES];
01994     PutBitContext pb[2], pb2[2], tex_pb[2];
01995 //printf("%d->%d\n", s->resync_mb_y, s->end_mb_y);
01996 
01997     ff_check_alignment();
01998 
01999     for(i=0; i<2; i++){
02000         init_put_bits(&pb    [i], bit_buf    [i], MAX_MB_BYTES);
02001         init_put_bits(&pb2   [i], bit_buf2   [i], MAX_MB_BYTES);
02002         init_put_bits(&tex_pb[i], bit_buf_tex[i], MAX_MB_BYTES);
02003     }
02004 
02005     s->last_bits= put_bits_count(&s->pb);
02006     s->mv_bits=0;
02007     s->misc_bits=0;
02008     s->i_tex_bits=0;
02009     s->p_tex_bits=0;
02010     s->i_count=0;
02011     s->f_count=0;
02012     s->b_count=0;
02013     s->skip_count=0;
02014 
02015     for(i=0; i<3; i++){
02016         /* init last dc values */
02017         /* note: quant matrix value (8) is implied here */
02018         s->last_dc[i] = 128 << s->intra_dc_precision;
02019 
02020         s->current_picture.error[i] = 0;
02021     }
02022     s->mb_skip_run = 0;
02023     memset(s->last_mv, 0, sizeof(s->last_mv));
02024 
02025     s->last_mv_dir = 0;
02026 
02027     switch(s->codec_id){
02028     case CODEC_ID_H263:
02029     case CODEC_ID_H263P:
02030     case CODEC_ID_FLV1:
02031         if (CONFIG_H263_ENCODER || CONFIG_H263P_ENCODER || CONFIG_FLV_ENCODER)
02032             s->gob_index = ff_h263_get_gob_height(s);
02033         break;
02034     case CODEC_ID_MPEG4:
02035         if(CONFIG_MPEG4_ENCODER && s->partitioned_frame)
02036             ff_mpeg4_init_partitions(s);
02037         break;
02038     }
02039 
02040     s->resync_mb_x=0;
02041     s->resync_mb_y=0;
02042     s->first_slice_line = 1;
02043     s->ptr_lastgob = s->pb.buf;
02044     for(mb_y= s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
02045 //    printf("row %d at %X\n", s->mb_y, (int)s);
02046         s->mb_x=0;
02047         s->mb_y= mb_y;
02048 
02049         ff_set_qscale(s, s->qscale);
02050         ff_init_block_index(s);
02051 
02052         for(mb_x=0; mb_x < s->mb_width; mb_x++) {
02053             int xy= mb_y*s->mb_stride + mb_x; // removed const, H261 needs to adjust this
02054             int mb_type= s->mb_type[xy];
02055 //            int d;
02056             int dmin= INT_MAX;
02057             int dir;
02058 
02059             if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < MAX_MB_BYTES){
02060                 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
02061                 return -1;
02062             }
02063             if(s->data_partitioning){
02064                 if(   s->pb2   .buf_end - s->pb2   .buf - (put_bits_count(&s->    pb2)>>3) < MAX_MB_BYTES
02065                    || s->tex_pb.buf_end - s->tex_pb.buf - (put_bits_count(&s->tex_pb )>>3) < MAX_MB_BYTES){
02066                     av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
02067                     return -1;
02068                 }
02069             }
02070 
02071             s->mb_x = mb_x;
02072             s->mb_y = mb_y;  // moved into loop, can get changed by H.261
02073             ff_update_block_index(s);
02074 
02075             if(CONFIG_H261_ENCODER && s->codec_id == CODEC_ID_H261){
02076                 ff_h261_reorder_mb_index(s);
02077                 xy= s->mb_y*s->mb_stride + s->mb_x;
02078                 mb_type= s->mb_type[xy];
02079             }
02080 
02081             /* write gob / video packet header  */
02082             if(s->rtp_mode){
02083                 int current_packet_size, is_gob_start;
02084 
02085                 current_packet_size= ((put_bits_count(&s->pb)+7)>>3) - (s->ptr_lastgob - s->pb.buf);
02086 
02087                 is_gob_start= s->avctx->rtp_payload_size && current_packet_size >= s->avctx->rtp_payload_size && mb_y + mb_x>0;
02088 
02089                 if(s->start_mb_y == mb_y && mb_y > 0 && mb_x==0) is_gob_start=1;
02090 
02091                 switch(s->codec_id){
02092                 case CODEC_ID_H263:
02093                 case CODEC_ID_H263P:
02094                     if(!s->h263_slice_structured)
02095                         if(s->mb_x || s->mb_y%s->gob_index) is_gob_start=0;
02096                     break;
02097                 case CODEC_ID_MPEG2VIDEO:
02098                     if(s->mb_x==0 && s->mb_y!=0) is_gob_start=1;
02099                 case CODEC_ID_MPEG1VIDEO:
02100                     if(s->mb_skip_run) is_gob_start=0;
02101                     break;
02102                 }
02103 
02104                 if(is_gob_start){
02105                     if(s->start_mb_y != mb_y || mb_x!=0){
02106                         write_slice_end(s);
02107 
02108                         if(CONFIG_MPEG4_ENCODER && s->codec_id==CODEC_ID_MPEG4 && s->partitioned_frame){
02109                             ff_mpeg4_init_partitions(s);
02110                         }
02111                     }
02112 
02113                     assert((put_bits_count(&s->pb)&7) == 0);
02114                     current_packet_size= pbBufPtr(&s->pb) - s->ptr_lastgob;
02115 
02116                     if(s->avctx->error_rate && s->resync_mb_x + s->resync_mb_y > 0){
02117                         int r= put_bits_count(&s->pb)/8 + s->picture_number + 16 + s->mb_x + s->mb_y;
02118                         int d= 100 / s->avctx->error_rate;
02119                         if(r % d == 0){
02120                             current_packet_size=0;
02121 #ifndef ALT_BITSTREAM_WRITER
02122                             s->pb.buf_ptr= s->ptr_lastgob;
02123 #endif
02124                             assert(pbBufPtr(&s->pb) == s->ptr_lastgob);
02125                         }
02126                     }
02127 
02128                     if (s->avctx->rtp_callback){
02129                         int number_mb = (mb_y - s->resync_mb_y)*s->mb_width + mb_x - s->resync_mb_x;
02130                         s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, current_packet_size, number_mb);
02131                     }
02132 
02133                     switch(s->codec_id){
02134                     case CODEC_ID_MPEG4:
02135                         if (CONFIG_MPEG4_ENCODER) {
02136                             ff_mpeg4_encode_video_packet_header(s);
02137                             ff_mpeg4_clean_buffers(s);
02138                         }
02139                     break;
02140                     case CODEC_ID_MPEG1VIDEO:
02141                     case CODEC_ID_MPEG2VIDEO:
02142                         if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER) {
02143                             ff_mpeg1_encode_slice_header(s);
02144                             ff_mpeg1_clean_buffers(s);
02145                         }
02146                     break;
02147                     case CODEC_ID_H263:
02148                     case CODEC_ID_H263P:
02149                         if (CONFIG_H263_ENCODER || CONFIG_H263P_ENCODER)
02150                             h263_encode_gob_header(s, mb_y);
02151                     break;
02152                     }
02153 
02154                     if(s->flags&CODEC_FLAG_PASS1){
02155                         int bits= put_bits_count(&s->pb);
02156                         s->misc_bits+= bits - s->last_bits;
02157                         s->last_bits= bits;
02158                     }
02159 
02160                     s->ptr_lastgob += current_packet_size;
02161                     s->first_slice_line=1;
02162                     s->resync_mb_x=mb_x;
02163                     s->resync_mb_y=mb_y;
02164                 }
02165             }
02166 
02167             if(  (s->resync_mb_x   == s->mb_x)
02168                && s->resync_mb_y+1 == s->mb_y){
02169                 s->first_slice_line=0;
02170             }
02171 
02172             s->mb_skipped=0;
02173             s->dquant=0; //only for QP_RD
02174 
02175             if(mb_type & (mb_type-1) || (s->flags & CODEC_FLAG_QP_RD)){ // more than 1 MB type possible or CODEC_FLAG_QP_RD
02176                 int next_block=0;
02177                 int pb_bits_count, pb2_bits_count, tex_pb_bits_count;
02178 
02179                 copy_context_before_encode(&backup_s, s, -1);
02180                 backup_s.pb= s->pb;
02181                 best_s.data_partitioning= s->data_partitioning;
02182                 best_s.partitioned_frame= s->partitioned_frame;
02183                 if(s->data_partitioning){
02184                     backup_s.pb2= s->pb2;
02185                     backup_s.tex_pb= s->tex_pb;
02186                 }
02187 
02188                 if(mb_type&CANDIDATE_MB_TYPE_INTER){
02189                     s->mv_dir = MV_DIR_FORWARD;
02190                     s->mv_type = MV_TYPE_16X16;
02191                     s->mb_intra= 0;
02192                     s->mv[0][0][0] = s->p_mv_table[xy][0];
02193                     s->mv[0][0][1] = s->p_mv_table[xy][1];
02194                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER, pb, pb2, tex_pb,
02195                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
02196                 }
02197                 if(mb_type&CANDIDATE_MB_TYPE_INTER_I){
02198                     s->mv_dir = MV_DIR_FORWARD;
02199                     s->mv_type = MV_TYPE_FIELD;
02200                     s->mb_intra= 0;
02201                     for(i=0; i<2; i++){
02202                         j= s->field_select[0][i] = s->p_field_select_table[i][xy];
02203                         s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
02204                         s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
02205                     }
02206                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER_I, pb, pb2, tex_pb,
02207                                  &dmin, &next_block, 0, 0);
02208                 }
02209                 if(mb_type&CANDIDATE_MB_TYPE_SKIPPED){
02210                     s->mv_dir = MV_DIR_FORWARD;
02211                     s->mv_type = MV_TYPE_16X16;
02212                     s->mb_intra= 0;
02213                     s->mv[0][0][0] = 0;
02214                     s->mv[0][0][1] = 0;
02215                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_SKIPPED, pb, pb2, tex_pb,
02216                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
02217                 }
02218                 if(mb_type&CANDIDATE_MB_TYPE_INTER4V){
02219                     s->mv_dir = MV_DIR_FORWARD;
02220                     s->mv_type = MV_TYPE_8X8;
02221                     s->mb_intra= 0;
02222                     for(i=0; i<4; i++){
02223                         s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
02224                         s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
02225                     }
02226                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER4V, pb, pb2, tex_pb,
02227                                  &dmin, &next_block, 0, 0);
02228                 }
02229                 if(mb_type&CANDIDATE_MB_TYPE_FORWARD){
02230                     s->mv_dir = MV_DIR_FORWARD;
02231                     s->mv_type = MV_TYPE_16X16;
02232                     s->mb_intra= 0;
02233                     s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
02234                     s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
02235                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD, pb, pb2, tex_pb,
02236                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
02237                 }
02238                 if(mb_type&CANDIDATE_MB_TYPE_BACKWARD){
02239                     s->mv_dir = MV_DIR_BACKWARD;
02240                     s->mv_type = MV_TYPE_16X16;
02241                     s->mb_intra= 0;
02242                     s->mv[1][0][0] = s->b_back_mv_table[xy][0];
02243                     s->mv[1][0][1] = s->b_back_mv_table[xy][1];
02244                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD, pb, pb2, tex_pb,
02245                                  &dmin, &next_block, s->mv[1][0][0], s->mv[1][0][1]);
02246                 }
02247                 if(mb_type&CANDIDATE_MB_TYPE_BIDIR){
02248                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
02249                     s->mv_type = MV_TYPE_16X16;
02250                     s->mb_intra= 0;
02251                     s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
02252                     s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
02253                     s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
02254                     s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
02255                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR, pb, pb2, tex_pb,
02256                                  &dmin, &next_block, 0, 0);
02257                 }
02258                 if(mb_type&CANDIDATE_MB_TYPE_FORWARD_I){
02259                     s->mv_dir = MV_DIR_FORWARD;
02260                     s->mv_type = MV_TYPE_FIELD;
02261                     s->mb_intra= 0;
02262                     for(i=0; i<2; i++){
02263                         j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
02264                         s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
02265                         s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
02266                     }
02267                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD_I, pb, pb2, tex_pb,
02268                                  &dmin, &next_block, 0, 0);
02269                 }
02270                 if(mb_type&CANDIDATE_MB_TYPE_BACKWARD_I){
02271                     s->mv_dir = MV_DIR_BACKWARD;
02272                     s->mv_type = MV_TYPE_FIELD;
02273                     s->mb_intra= 0;
02274                     for(i=0; i<2; i++){
02275                         j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
02276                         s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
02277                         s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
02278                     }
02279                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD_I, pb, pb2, tex_pb,
02280                                  &dmin, &next_block, 0, 0);
02281                 }
02282                 if(mb_type&CANDIDATE_MB_TYPE_BIDIR_I){
02283                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
02284                     s->mv_type = MV_TYPE_FIELD;
02285                     s->mb_intra= 0;
02286                     for(dir=0; dir<2; dir++){
02287                         for(i=0; i<2; i++){
02288                             j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
02289                             s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
02290                             s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
02291                         }
02292                     }
02293                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR_I, pb, pb2, tex_pb,
02294                                  &dmin, &next_block, 0, 0);
02295                 }
02296                 if(mb_type&CANDIDATE_MB_TYPE_INTRA){
02297                     s->mv_dir = 0;
02298                     s->mv_type = MV_TYPE_16X16;
02299                     s->mb_intra= 1;
02300                     s->mv[0][0][0] = 0;
02301                     s->mv[0][0][1] = 0;
02302                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTRA, pb, pb2, tex_pb,
02303                                  &dmin, &next_block, 0, 0);
02304                     if(s->h263_pred || s->h263_aic){
02305                         if(best_s.mb_intra)
02306                             s->mbintra_table[mb_x + mb_y*s->mb_stride]=1;
02307                         else
02308                             ff_clean_intra_table_entries(s); //old mode?
02309                     }
02310                 }
02311 
02312                 if((s->flags & CODEC_FLAG_QP_RD) && dmin < INT_MAX){
02313                     if(best_s.mv_type==MV_TYPE_16X16){ //FIXME move 4mv after QPRD
02314                         const int last_qp= backup_s.qscale;
02315                         int qpi, qp, dc[6];
02316                         DCTELEM ac[6][16];
02317                         const int mvdir= (best_s.mv_dir&MV_DIR_BACKWARD) ? 1 : 0;
02318                         static const int dquant_tab[4]={-1,1,-2,2};
02319 
02320                         assert(backup_s.dquant == 0);
02321 
02322                         //FIXME intra
02323                         s->mv_dir= best_s.mv_dir;
02324                         s->mv_type = MV_TYPE_16X16;
02325                         s->mb_intra= best_s.mb_intra;
02326                         s->mv[0][0][0] = best_s.mv[0][0][0];
02327                         s->mv[0][0][1] = best_s.mv[0][0][1];
02328                         s->mv[1][0][0] = best_s.mv[1][0][0];
02329                         s->mv[1][0][1] = best_s.mv[1][0][1];
02330 
02331                         qpi = s->pict_type == FF_B_TYPE ? 2 : 0;
02332                         for(; qpi<4; qpi++){
02333                             int dquant= dquant_tab[qpi];
02334                             qp= last_qp + dquant;
02335                             if(qp < s->avctx->qmin || qp > s->avctx->qmax)
02336                                 continue;
02337                             backup_s.dquant= dquant;
02338                             if(s->mb_intra && s->dc_val[0]){
02339                                 for(i=0; i<6; i++){
02340                                     dc[i]= s->dc_val[0][ s->block_index[i] ];
02341                                     memcpy(ac[i], s->ac_val[0][s->block_index[i]], sizeof(DCTELEM)*16);
02342                                 }
02343                             }
02344 
02345                             encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
02346                                          &dmin, &next_block, s->mv[mvdir][0][0], s->mv[mvdir][0][1]);
02347                             if(best_s.qscale != qp){
02348                                 if(s->mb_intra && s->dc_val[0]){
02349                                     for(i=0; i<6; i++){
02350                                         s->dc_val[0][ s->block_index[i] ]= dc[i];
02351                                         memcpy(s->ac_val[0][s->block_index[i]], ac[i], sizeof(DCTELEM)*16);
02352                                     }
02353                                 }
02354                             }
02355                         }
02356                     }
02357                 }
02358                 if(CONFIG_MPEG4_ENCODER && mb_type&CANDIDATE_MB_TYPE_DIRECT){
02359                     int mx= s->b_direct_mv_table[xy][0];
02360                     int my= s->b_direct_mv_table[xy][1];
02361 
02362                     backup_s.dquant = 0;
02363                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
02364                     s->mb_intra= 0;
02365                     ff_mpeg4_set_direct_mv(s, mx, my);
02366                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
02367                                  &dmin, &next_block, mx, my);
02368                 }
02369                 if(CONFIG_MPEG4_ENCODER && mb_type&CANDIDATE_MB_TYPE_DIRECT0){
02370                     backup_s.dquant = 0;
02371                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
02372                     s->mb_intra= 0;
02373                     ff_mpeg4_set_direct_mv(s, 0, 0);
02374                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
02375                                  &dmin, &next_block, 0, 0);
02376                 }
02377                 if(!best_s.mb_intra && s->flags2&CODEC_FLAG2_SKIP_RD){
02378                     int coded=0;
02379                     for(i=0; i<6; i++)
02380                         coded |= s->block_last_index[i];
02381                     if(coded){
02382                         int mx,my;
02383                         memcpy(s->mv, best_s.mv, sizeof(s->mv));
02384                         if(CONFIG_MPEG4_ENCODER && best_s.mv_dir & MV_DIRECT){
02385                             mx=my=0; //FIXME find the one we actually used
02386                             ff_mpeg4_set_direct_mv(s, mx, my);
02387                         }else if(best_s.mv_dir&MV_DIR_BACKWARD){
02388                             mx= s->mv[1][0][0];
02389                             my= s->mv[1][0][1];
02390                         }else{
02391                             mx= s->mv[0][0][0];
02392                             my= s->mv[0][0][1];
02393                         }
02394 
02395                         s->mv_dir= best_s.mv_dir;
02396                         s->mv_type = best_s.mv_type;
02397                         s->mb_intra= 0;
02398 /*                        s->mv[0][0][0] = best_s.mv[0][0][0];
02399                         s->mv[0][0][1] = best_s.mv[0][0][1];
02400                         s->mv[1][0][0] = best_s.mv[1][0][0];
02401                         s->mv[1][0][1] = best_s.mv[1][0][1];*/
02402                         backup_s.dquant= 0;
02403                         s->skipdct=1;
02404                         encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
02405                                         &dmin, &next_block, mx, my);
02406                         s->skipdct=0;
02407                     }
02408                 }
02409 
02410                 s->current_picture.qscale_table[xy]= best_s.qscale;
02411 
02412                 copy_context_after_encode(s, &best_s, -1);
02413 
02414                 pb_bits_count= put_bits_count(&s->pb);
02415                 flush_put_bits(&s->pb);
02416                 ff_copy_bits(&backup_s.pb, bit_buf[next_block^1], pb_bits_count);
02417                 s->pb= backup_s.pb;
02418 
02419                 if(s->data_partitioning){
02420                     pb2_bits_count= put_bits_count(&s->pb2);
02421                     flush_put_bits(&s->pb2);
02422                     ff_copy_bits(&backup_s.pb2, bit_buf2[next_block^1], pb2_bits_count);
02423                     s->pb2= backup_s.pb2;
02424 
02425                     tex_pb_bits_count= put_bits_count(&s->tex_pb);
02426                     flush_put_bits(&s->tex_pb);
02427                     ff_copy_bits(&backup_s.tex_pb, bit_buf_tex[next_block^1], tex_pb_bits_count);
02428                     s->tex_pb= backup_s.tex_pb;
02429                 }
02430                 s->last_bits= put_bits_count(&s->pb);
02431 
02432                 if (CONFIG_ANY_H263_ENCODER &&
02433                     s->out_format == FMT_H263 && s->pict_type!=FF_B_TYPE)
02434                     ff_h263_update_motion_val(s);
02435 
02436                 if(next_block==0){ //FIXME 16 vs linesize16
02437                     s->dsp.put_pixels_tab[0][0](s->dest[0], s->rd_scratchpad                     , s->linesize  ,16);
02438                     s->dsp.put_pixels_tab[1][0](s->dest[1], s->rd_scratchpad + 16*s->linesize    , s->uvlinesize, 8);
02439                     s->dsp.put_pixels_tab[1][0](s->dest[2], s->rd_scratchpad + 16*s->linesize + 8, s->uvlinesize, 8);
02440                 }
02441 
02442                 if(s->avctx->mb_decision == FF_MB_DECISION_BITS)
02443                     MPV_decode_mb(s, s->block);
02444             } else {
02445                 int motion_x = 0, motion_y = 0;
02446                 s->mv_type=MV_TYPE_16X16;
02447                 // only one MB-Type possible
02448 
02449                 switch(mb_type){
02450                 case CANDIDATE_MB_TYPE_INTRA:
02451                     s->mv_dir = 0;
02452                     s->mb_intra= 1;
02453                     motion_x= s->mv[0][0][0] = 0;
02454                     motion_y= s->mv[0][0][1] = 0;
02455                     break;
02456                 case CANDIDATE_MB_TYPE_INTER:
02457                     s->mv_dir = MV_DIR_FORWARD;
02458                     s->mb_intra= 0;
02459                     motion_x= s->mv[0][0][0] = s->p_mv_table[xy][0];
02460                     motion_y= s->mv[0][0][1] = s->p_mv_table[xy][1];
02461                     break;
02462                 case CANDIDATE_MB_TYPE_INTER_I:
02463                     s->mv_dir = MV_DIR_FORWARD;
02464                     s->mv_type = MV_TYPE_FIELD;
02465                     s->mb_intra= 0;
02466                     for(i=0; i<2; i++){
02467                         j= s->field_select[0][i] = s->p_field_select_table[i][xy];
02468                         s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
02469                         s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
02470                     }
02471                     break;
02472                 case CANDIDATE_MB_TYPE_INTER4V:
02473                     s->mv_dir = MV_DIR_FORWARD;
02474                     s->mv_type = MV_TYPE_8X8;
02475                     s->mb_intra= 0;
02476                     for(i=0; i<4; i++){
02477                         s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
02478                         s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
02479                     }
02480                     break;
02481                 case CANDIDATE_MB_TYPE_DIRECT:
02482                     if (CONFIG_MPEG4_ENCODER) {
02483                         s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD|MV_DIRECT;
02484                         s->mb_intra= 0;
02485                         motion_x=s->b_direct_mv_table[xy][0];
02486                         motion_y=s->b_direct_mv_table[xy][1];
02487                         ff_mpeg4_set_direct_mv(s, motion_x, motion_y);
02488                     }
02489                     break;
02490                 case CANDIDATE_MB_TYPE_DIRECT0:
02491                     if (CONFIG_MPEG4_ENCODER) {
02492                         s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD|MV_DIRECT;
02493                         s->mb_intra= 0;
02494                         ff_mpeg4_set_direct_mv(s, 0, 0);
02495                     }
02496                     break;
02497                 case CANDIDATE_MB_TYPE_BIDIR:
02498                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
02499                     s->mb_intra= 0;
02500                     s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
02501                     s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
02502                     s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
02503                     s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
02504                     break;
02505                 case CANDIDATE_MB_TYPE_BACKWARD:
02506                     s->mv_dir = MV_DIR_BACKWARD;
02507                     s->mb_intra= 0;
02508                     motion_x= s->mv[1][0][0] = s->b_back_mv_table[xy][0];
02509                     motion_y= s->mv[1][0][1] = s->b_back_mv_table[xy][1];
02510                     break;
02511                 case CANDIDATE_MB_TYPE_FORWARD:
02512                     s->mv_dir = MV_DIR_FORWARD;
02513                     s->mb_intra= 0;
02514                     motion_x= s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
02515                     motion_y= s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
02516 //                    printf(" %d %d ", motion_x, motion_y);
02517                     break;
02518                 case CANDIDATE_MB_TYPE_FORWARD_I:
02519                     s->mv_dir = MV_DIR_FORWARD;
02520                     s->mv_type = MV_TYPE_FIELD;
02521                     s->mb_intra= 0;
02522                     for(i=0; i<2; i++){
02523                         j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
02524                         s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
02525                         s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
02526                     }
02527                     break;
02528                 case CANDIDATE_MB_TYPE_BACKWARD_I:
02529                     s->mv_dir = MV_DIR_BACKWARD;
02530                     s->mv_type = MV_TYPE_FIELD;
02531                     s->mb_intra= 0;
02532                     for(i=0; i<2; i++){
02533                         j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
02534                         s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
02535                         s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
02536                     }
02537                     break;
02538                 case CANDIDATE_MB_TYPE_BIDIR_I:
02539                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
02540                     s->mv_type = MV_TYPE_FIELD;
02541                     s->mb_intra= 0;
02542                     for(dir=0; dir<2; dir++){
02543                         for(i=0; i<2; i++){
02544                             j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
02545                             s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
02546                             s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
02547                         }
02548                     }
02549                     break;
02550                 default:
02551                     av_log(s->avctx, AV_LOG_ERROR, "illegal MB type\n");
02552                 }
02553 
02554                 encode_mb(s, motion_x, motion_y);
02555 
02556                 // RAL: Update last macroblock type
02557                 s->last_mv_dir = s->mv_dir;
02558 
02559                 if (CONFIG_ANY_H263_ENCODER &&
02560                     s->out_format == FMT_H263 && s->pict_type!=FF_B_TYPE)
02561                     ff_h263_update_motion_val(s);
02562 
02563                 MPV_decode_mb(s, s->block);
02564             }
02565 
02566             /* clean the MV table in IPS frames for direct mode in B frames */
02567             if(s->mb_intra /* && I,P,S_TYPE */){
02568                 s->p_mv_table[xy][0]=0;
02569                 s->p_mv_table[xy][1]=0;
02570             }
02571 
02572             if(s->flags&CODEC_FLAG_PSNR){
02573                 int w= 16;
02574                 int h= 16;
02575 
02576                 if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
02577                 if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
02578 
02579                 s->current_picture.error[0] += sse(
02580                     s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16,
02581                     s->dest[0], w, h, s->linesize);
02582                 s->current_picture.error[1] += sse(
02583                     s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*chr_h,
02584                     s->dest[1], w>>1, h>>s->chroma_y_shift, s->uvlinesize);
02585                 s->current_picture.error[2] += sse(
02586                     s, s->new_picture.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*chr_h,
02587                     s->dest[2], w>>1, h>>s->chroma_y_shift, s->uvlinesize);
02588             }
02589             if(s->loop_filter){
02590                 if(CONFIG_ANY_H263_ENCODER && s->out_format == FMT_H263)
02591                     ff_h263_loop_filter(s);
02592             }
02593 //printf("MB %d %d bits\n", s->mb_x+s->mb_y*s->mb_stride, put_bits_count(&s->pb));
02594         }
02595     }
02596 
02597     //not beautiful here but we must write it before flushing so it has to be here
02598     if (CONFIG_MSMPEG4_ENCODER && s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type == FF_I_TYPE)
02599         msmpeg4_encode_ext_header(s);
02600 
02601     write_slice_end(s);
02602 
02603     /* Send the last GOB if RTP */
02604     if (s->avctx->rtp_callback) {
02605         int number_mb = (mb_y - s->resync_mb_y)*s->mb_width - s->resync_mb_x;
02606         pdif = pbBufPtr(&s->pb) - s->ptr_lastgob;
02607         /* Call the RTP callback to send the last GOB */
02608         emms_c();
02609         s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, pdif, number_mb);
02610     }
02611 
02612     return 0;
02613 }
02614 
02615 #define MERGE(field) dst->field += src->field; src->field=0
02616 static void merge_context_after_me(MpegEncContext *dst, MpegEncContext *src){
02617     MERGE(me.scene_change_score);
02618     MERGE(me.mc_mb_var_sum_temp);
02619     MERGE(me.mb_var_sum_temp);
02620 }
02621 
02622 static void merge_context_after_encode(MpegEncContext *dst, MpegEncContext *src){
02623     int i;
02624 
02625     MERGE(dct_count[0]); //note, the other dct vars are not part of the context
02626     MERGE(dct_count[1]);
02627     MERGE(mv_bits);
02628     MERGE(i_tex_bits);
02629     MERGE(p_tex_bits);
02630     MERGE(i_count);
02631     MERGE(f_count);
02632     MERGE(b_count);
02633     MERGE(skip_count);
02634     MERGE(misc_bits);
02635     MERGE(error_count);
02636     MERGE(padding_bug_score);
02637     MERGE(current_picture.error[0]);
02638     MERGE(current_picture.error[1]);
02639     MERGE(current_picture.error[2]);
02640 
02641     if(dst->avctx->noise_reduction){
02642         for(i=0; i<64; i++){
02643             MERGE(dct_error_sum[0][i]);
02644             MERGE(dct_error_sum[1][i]);
02645         }
02646     }
02647 
02648     assert(put_bits_count(&src->pb) % 8 ==0);
02649     assert(put_bits_count(&dst->pb) % 8 ==0);
02650     ff_copy_bits(&dst->pb, src->pb.buf, put_bits_count(&src->pb));
02651     flush_put_bits(&dst->pb);
02652 }
02653 
02654 static int estimate_qp(MpegEncContext *s, int dry_run){
02655     if (s->next_lambda){
02656         s->current_picture_ptr->quality=
02657         s->current_picture.quality = s->next_lambda;
02658         if(!dry_run) s->next_lambda= 0;
02659     } else if (!s->fixed_qscale) {
02660         s->current_picture_ptr->quality=
02661         s->current_picture.quality = ff_rate_estimate_qscale(s, dry_run);
02662         if (s->current_picture.quality < 0)
02663             return -1;
02664     }
02665 
02666     if(s->adaptive_quant){
02667         switch(s->codec_id){
02668         case CODEC_ID_MPEG4:
02669             if (CONFIG_MPEG4_ENCODER)
02670                 ff_clean_mpeg4_qscales(s);
02671             break;
02672         case CODEC_ID_H263:
02673         case CODEC_ID_H263P:
02674         case CODEC_ID_FLV1:
02675             if (CONFIG_H263_ENCODER||CONFIG_H263P_ENCODER||CONFIG_FLV_ENCODER)
02676                 ff_clean_h263_qscales(s);
02677             break;
02678         }
02679 
02680         s->lambda= s->lambda_table[0];
02681         //FIXME broken
02682     }else
02683         s->lambda= s->current_picture.quality;
02684 //printf("%d %d\n", s->avctx->global_quality, s->current_picture.quality);
02685     update_qscale(s);
02686     return 0;
02687 }
02688 
02689 /* must be called before writing the header */
02690 static void set_frame_distances(MpegEncContext * s){
02691     assert(s->current_picture_ptr->pts != AV_NOPTS_VALUE);
02692     s->time= s->current_picture_ptr->pts*s->avctx->time_base.num;
02693 
02694     if(s->pict_type==FF_B_TYPE){
02695         s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
02696         assert(s->pb_time > 0 && s->pb_time < s->pp_time);
02697     }else{
02698         s->pp_time= s->time - s->last_non_b_time;
02699         s->last_non_b_time= s->time;
02700         assert(s->picture_number==0 || s->pp_time > 0);
02701     }
02702 }
02703 
02704 static int encode_picture(MpegEncContext *s, int picture_number)
02705 {
02706     int i;
02707     int bits;
02708 
02709     s->picture_number = picture_number;
02710 
02711     /* Reset the average MB variance */
02712     s->me.mb_var_sum_temp    =
02713     s->me.mc_mb_var_sum_temp = 0;
02714 
02715     /* we need to initialize some time vars before we can encode b-frames */
02716     // RAL: Condition added for MPEG1VIDEO
02717     if (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO || (s->h263_pred && !s->h263_msmpeg4))
02718         set_frame_distances(s);
02719     if(CONFIG_MPEG4_ENCODER && s->codec_id == CODEC_ID_MPEG4)
02720         ff_set_mpeg4_time(s);
02721 
02722     s->me.scene_change_score=0;
02723 
02724 //    s->lambda= s->current_picture_ptr->quality; //FIXME qscale / ... stuff for ME rate distortion
02725 
02726     if(s->pict_type==FF_I_TYPE){
02727         if(s->msmpeg4_version >= 3) s->no_rounding=1;
02728         else                        s->no_rounding=0;
02729     }else if(s->pict_type!=FF_B_TYPE){
02730         if(s->flipflop_rounding || s->codec_id == CODEC_ID_H263P || s->codec_id == CODEC_ID_MPEG4)
02731             s->no_rounding ^= 1;
02732     }
02733 
02734     if(s->flags & CODEC_FLAG_PASS2){
02735         if (estimate_qp(s,1) < 0)
02736             return -1;
02737         ff_get_2pass_fcode(s);
02738     }else if(!(s->flags & CODEC_FLAG_QSCALE)){
02739         if(s->pict_type==FF_B_TYPE)
02740             s->lambda= s->last_lambda_for[s->pict_type];
02741         else
02742             s->lambda= s->last_lambda_for[s->last_non_b_pict_type];
02743         update_qscale(s);
02744     }
02745 
02746     s->mb_intra=0; //for the rate distortion & bit compare functions
02747     for(i=1; i<s->avctx->thread_count; i++){
02748         ff_update_duplicate_context(s->thread_context[i], s);
02749     }
02750 
02751     if(ff_init_me(s)<0)
02752         return -1;
02753 
02754     /* Estimate motion for every MB */
02755     if(s->pict_type != FF_I_TYPE){
02756         s->lambda = (s->lambda * s->avctx->me_penalty_compensation + 128)>>8;
02757         s->lambda2= (s->lambda2* (int64_t)s->avctx->me_penalty_compensation + 128)>>8;
02758         if(s->pict_type != FF_B_TYPE && s->avctx->me_threshold==0){
02759             if((s->avctx->pre_me && s->last_non_b_pict_type==FF_I_TYPE) || s->avctx->pre_me==2){
02760                 s->avctx->execute(s->avctx, pre_estimate_motion_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count, sizeof(void*));
02761             }
02762         }
02763 
02764         s->avctx->execute(s->avctx, estimate_motion_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count, sizeof(void*));
02765     }else /* if(s->pict_type == FF_I_TYPE) */{
02766         /* I-Frame */
02767         for(i=0; i<s->mb_stride*s->mb_height; i++)
02768             s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
02769 
02770         if(!s->fixed_qscale){
02771             /* finding spatial complexity for I-frame rate control */
02772             s->avctx->execute(s->avctx, mb_var_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count, sizeof(void*));
02773         }
02774     }
02775     for(i=1; i<s->avctx->thread_count; i++){
02776         merge_context_after_me(s, s->thread_context[i]);
02777     }
02778     s->current_picture.mc_mb_var_sum= s->current_picture_ptr->mc_mb_var_sum= s->me.mc_mb_var_sum_temp;
02779     s->current_picture.   mb_var_sum= s->current_picture_ptr->   mb_var_sum= s->me.   mb_var_sum_temp;
02780     emms_c();
02781 
02782     if(s->me.scene_change_score > s->avctx->scenechange_threshold && s->pict_type == FF_P_TYPE){
02783         s->pict_type= FF_I_TYPE;
02784         for(i=0; i<s->mb_stride*s->mb_height; i++)
02785             s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
02786 //printf("Scene change detected, encoding as I Frame %d %d\n", s->current_picture.mb_var_sum, s->current_picture.mc_mb_var_sum);
02787     }
02788 
02789     if(!s->umvplus){
02790         if(s->pict_type==FF_P_TYPE || s->pict_type==FF_S_TYPE) {
02791             s->f_code= ff_get_best_fcode(s, s->p_mv_table, CANDIDATE_MB_TYPE_INTER);
02792 
02793             if(s->flags & CODEC_FLAG_INTERLACED_ME){
02794                 int a,b;
02795                 a= ff_get_best_fcode(s, s->p_field_mv_table[0][0], CANDIDATE_MB_TYPE_INTER_I); //FIXME field_select
02796                 b= ff_get_best_fcode(s, s->p_field_mv_table[1][1], CANDIDATE_MB_TYPE_INTER_I);
02797                 s->f_code= FFMAX3(s->f_code, a, b);
02798             }
02799 
02800             ff_fix_long_p_mvs(s);
02801             ff_fix_long_mvs(s, NULL, 0, s->p_mv_table, s->f_code, CANDIDATE_MB_TYPE_INTER, 0);
02802             if(s->flags & CODEC_FLAG_INTERLACED_ME){
02803                 int j;
02804                 for(i=0; i<2; i++){
02805                     for(j=0; j<2; j++)
02806                         ff_fix_long_mvs(s, s->p_field_select_table[i], j,
02807                                         s->p_field_mv_table[i][j], s->f_code, CANDIDATE_MB_TYPE_INTER_I, 0);
02808                 }
02809             }
02810         }
02811 
02812         if(s->pict_type==FF_B_TYPE){
02813             int a, b;
02814 
02815             a = ff_get_best_fcode(s, s->b_forw_mv_table, CANDIDATE_MB_TYPE_FORWARD);
02816             b = ff_get_best_fcode(s, s->b_bidir_forw_mv_table, CANDIDATE_MB_TYPE_BIDIR);
02817             s->f_code = FFMAX(a, b);
02818 
02819             a = ff_get_best_fcode(s, s->b_back_mv_table, CANDIDATE_MB_TYPE_BACKWARD);
02820             b = ff_get_best_fcode(s, s->b_bidir_back_mv_table, CANDIDATE_MB_TYPE_BIDIR);
02821             s->b_code = FFMAX(a, b);
02822 
02823             ff_fix_long_mvs(s, NULL, 0, s->b_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_FORWARD, 1);
02824             ff_fix_long_mvs(s, NULL, 0, s->b_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BACKWARD, 1);
02825             ff_fix_long_mvs(s, NULL, 0, s->b_bidir_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_BIDIR, 1);
02826             ff_fix_long_mvs(s, NULL, 0, s->b_bidir_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BIDIR, 1);
02827             if(s->flags & CODEC_FLAG_INTERLACED_ME){
02828                 int dir, j;
02829                 for(dir=0; dir<2; dir++){
02830                     for(i=0; i<2; i++){
02831                         for(j=0; j<2; j++){
02832                             int type= dir ? (CANDIDATE_MB_TYPE_BACKWARD_I|CANDIDATE_MB_TYPE_BIDIR_I)
02833                                           : (CANDIDATE_MB_TYPE_FORWARD_I |CANDIDATE_MB_TYPE_BIDIR_I);
02834                             ff_fix_long_mvs(s, s->b_field_select_table[dir][i], j,
02835                                             s->b_field_mv_table[dir][i][j], dir ? s->b_code : s->f_code, type, 1);
02836                         }
02837                     }
02838                 }
02839             }
02840         }
02841     }
02842 
02843     if (estimate_qp(s, 0) < 0)
02844         return -1;
02845 
02846     if(s->qscale < 3 && s->max_qcoeff<=128 && s->pict_type==FF_I_TYPE && !(s->flags & CODEC_FLAG_QSCALE))
02847         s->qscale= 3; //reduce clipping problems
02848 
02849     if (s->out_format == FMT_MJPEG) {
02850         /* for mjpeg, we do include qscale in the matrix */
02851         s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0];
02852         for(i=1;i<64;i++){
02853             int j= s->dsp.idct_permutation[i];
02854 
02855             s->intra_matrix[j] = av_clip_uint8((ff_mpeg1_default_intra_matrix[i] * s->qscale) >> 3);
02856         }
02857         ff_convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
02858                        s->intra_matrix, s->intra_quant_bias, 8, 8, 1);
02859         s->qscale= 8;
02860     }
02861 
02862     //FIXME var duplication
02863     s->current_picture_ptr->key_frame=
02864     s->current_picture.key_frame= s->pict_type == FF_I_TYPE; //FIXME pic_ptr
02865     s->current_picture_ptr->pict_type=
02866     s->current_picture.pict_type= s->pict_type;
02867 
02868     if(s->current_picture.key_frame)
02869         s->picture_in_gop_number=0;
02870 
02871     s->last_bits= put_bits_count(&s->pb);
02872     switch(s->out_format) {
02873     case FMT_MJPEG:
02874         if (CONFIG_MJPEG_ENCODER)
02875             ff_mjpeg_encode_picture_header(s);
02876         break;
02877     case FMT_H261:
02878         if (CONFIG_H261_ENCODER)
02879             ff_h261_encode_picture_header(s, picture_number);
02880         break;
02881     case FMT_H263:
02882         if (CONFIG_WMV2_ENCODER && s->codec_id == CODEC_ID_WMV2)
02883             ff_wmv2_encode_picture_header(s, picture_number);
02884         else if (CONFIG_MSMPEG4_ENCODER && s->h263_msmpeg4)
02885             msmpeg4_encode_picture_header(s, picture_number);
02886         else if (CONFIG_MPEG4_ENCODER && s->h263_pred)
02887             mpeg4_encode_picture_header(s, picture_number);
02888         else if (CONFIG_RV10_ENCODER && s->codec_id == CODEC_ID_RV10)
02889             rv10_encode_picture_header(s, picture_number);
02890         else if (CONFIG_RV20_ENCODER && s->codec_id == CODEC_ID_RV20)
02891             rv20_encode_picture_header(s, picture_number);
02892         else if (CONFIG_FLV_ENCODER && s->codec_id == CODEC_ID_FLV1)
02893             ff_flv_encode_picture_header(s, picture_number);
02894         else if (CONFIG_ANY_H263_ENCODER)
02895             h263_encode_picture_header(s, picture_number);
02896         break;
02897     case FMT_MPEG1:
02898         if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
02899             mpeg1_encode_picture_header(s, picture_number);
02900         break;
02901     case FMT_H264:
02902         break;
02903     default:
02904         assert(0);
02905     }
02906     bits= put_bits_count(&s->pb);
02907     s->header_bits= bits - s->last_bits;
02908 
02909     for(i=1; i<s->avctx->thread_count; i++){
02910         update_duplicate_context_after_me(s->thread_context[i], s);
02911     }
02912     s->avctx->execute(s->avctx, encode_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count, sizeof(void*));
02913     for(i=1; i<s->avctx->thread_count; i++){
02914         merge_context_after_encode(s, s->thread_context[i]);
02915     }
02916     emms_c();
02917     return 0;
02918 }
02919 
02920 void  denoise_dct_c(MpegEncContext *s, DCTELEM *block){
02921     const int intra= s->mb_intra;
02922     int i;
02923 
02924     s->dct_count[intra]++;
02925 
02926     for(i=0; i<64; i++){
02927         int level= block[i];
02928 
02929         if(level){
02930             if(level>0){
02931                 s->dct_error_sum[intra][i] += level;
02932                 level -= s->dct_offset[intra][i];
02933                 if(level<0) level=0;
02934             }else{
02935                 s->dct_error_sum[intra][i] -= level;
02936                 level += s->dct_offset[intra][i];
02937                 if(level>0) level=0;
02938             }
02939             block[i]= level;
02940         }
02941     }
02942 }
02943 
02944 int dct_quantize_trellis_c(MpegEncContext *s,
02945                         DCTELEM *block, int n,
02946                         int qscale, int *overflow){
02947     const int *qmat;
02948     const uint8_t *scantable= s->intra_scantable.scantable;
02949     const uint8_t *perm_scantable= s->intra_scantable.permutated;
02950     int max=0;
02951     unsigned int threshold1, threshold2;
02952     int bias=0;
02953     int run_tab[65];
02954     int level_tab[65];
02955     int score_tab[65];
02956     int survivor[65];
02957     int survivor_count;
02958     int last_run=0;
02959     int last_level=0;
02960     int last_score= 0;
02961     int last_i;
02962     int coeff[2][64];
02963     int coeff_count[64];
02964     int qmul, qadd, start_i, last_non_zero, i, dc;
02965     const int esc_length= s->ac_esc_length;
02966     uint8_t * length;
02967     uint8_t * last_length;
02968     const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
02969 
02970     s->dsp.fdct (block);
02971 
02972     if(s->dct_error_sum)
02973         s->denoise_dct(s, block);
02974     qmul= qscale*16;
02975     qadd= ((qscale-1)|1)*8;
02976 
02977     if (s->mb_intra) {
02978         int q;
02979         if (!s->h263_aic) {
02980             if (n < 4)
02981                 q = s->y_dc_scale;
02982             else
02983                 q = s->c_dc_scale;
02984             q = q << 3;
02985         } else{
02986             /* For AIC we skip quant/dequant of INTRADC */
02987             q = 1 << 3;
02988             qadd=0;
02989         }
02990 
02991         /* note: block[0] is assumed to be positive */
02992         block[0] = (block[0] + (q >> 1)) / q;
02993         start_i = 1;
02994         last_non_zero = 0;
02995         qmat = s->q_intra_matrix[qscale];
02996         if(s->mpeg_quant || s->out_format == FMT_MPEG1)
02997             bias= 1<<(QMAT_SHIFT-1);
02998         length     = s->intra_ac_vlc_length;
02999         last_length= s->intra_ac_vlc_last_length;
03000     } else {
03001         start_i = 0;
03002         last_non_zero = -1;
03003         qmat = s->q_inter_matrix[qscale];
03004         length     = s->inter_ac_vlc_length;
03005         last_length= s->inter_ac_vlc_last_length;
03006     }
03007     last_i= start_i;
03008 
03009     threshold1= (1<<QMAT_SHIFT) - bias - 1;
03010     threshold2= (threshold1<<1);
03011 
03012     for(i=63; i>=start_i; i--) {
03013         const int j = scantable[i];
03014         int level = block[j] * qmat[j];
03015 
03016         if(((unsigned)(level+threshold1))>threshold2){
03017             last_non_zero = i;
03018             break;
03019         }
03020     }
03021 
03022     for(i=start_i; i<=last_non_zero; i++) {
03023         const int j = scantable[i];
03024         int level = block[j] * qmat[j];
03025 
03026 //        if(   bias+level >= (1<<(QMAT_SHIFT - 3))
03027 //           || bias-level >= (1<<(QMAT_SHIFT - 3))){
03028         if(((unsigned)(level+threshold1))>threshold2){
03029             if(level>0){
03030                 level= (bias + level)>>QMAT_SHIFT;
03031                 coeff[0][i]= level;
03032                 coeff[1][i]= level-1;
03033 //                coeff[2][k]= level-2;
03034             }else{
03035                 level= (bias - level)>>QMAT_SHIFT;
03036                 coeff[0][i]= -level;
03037                 coeff[1][i]= -level+1;
03038 //                coeff[2][k]= -level+2;
03039             }
03040             coeff_count[i]= FFMIN(level, 2);
03041             assert(coeff_count[i]);
03042             max |=level;
03043         }else{
03044             coeff[0][i]= (level>>31)|1;
03045             coeff_count[i]= 1;
03046         }
03047     }
03048 
03049     *overflow= s->max_qcoeff < max; //overflow might have happened
03050 
03051     if(last_non_zero < start_i){
03052         memset(block + start_i, 0, (64-start_i)*sizeof(DCTELEM));
03053         return last_non_zero;
03054     }
03055 
03056     score_tab[start_i]= 0;
03057     survivor[0]= start_i;
03058     survivor_count= 1;
03059 
03060     for(i=start_i; i<=last_non_zero; i++){
03061         int level_index, j, zero_distortion;
03062         int dct_coeff= FFABS(block[ scantable[i] ]);
03063         int best_score=256*256*256*120;
03064 
03065         if (   s->dsp.fdct == fdct_ifast
03066 #ifndef FAAN_POSTSCALE
03067             || s->dsp.fdct == ff_faandct
03068 #endif
03069            )
03070             dct_coeff= (dct_coeff*ff_inv_aanscales[ scantable[i] ]) >> 12;
03071         zero_distortion= dct_coeff*dct_coeff;
03072 
03073         for(level_index=0; level_index < coeff_count[i]; level_index++){
03074             int distortion;
03075             int level= coeff[level_index][i];
03076             const int alevel= FFABS(level);
03077             int unquant_coeff;
03078 
03079             assert(level);
03080 
03081             if(s->out_format == FMT_H263){
03082                 unquant_coeff= alevel*qmul + qadd;
03083             }else{ //MPEG1
03084                 j= s->dsp.idct_permutation[ scantable[i] ]; //FIXME optimize
03085                 if(s->mb_intra){
03086                         unquant_coeff = (int)(  alevel  * qscale * s->intra_matrix[j]) >> 3;
03087                         unquant_coeff =   (unquant_coeff - 1) | 1;
03088                 }else{
03089                         unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[j])) >> 4;
03090                         unquant_coeff =   (unquant_coeff - 1) | 1;
03091                 }
03092                 unquant_coeff<<= 3;
03093             }
03094 
03095             distortion= (unquant_coeff - dct_coeff) * (unquant_coeff - dct_coeff) - zero_distortion;
03096             level+=64;
03097             if((level&(~127)) == 0){
03098                 for(j=survivor_count-1; j>=0; j--){
03099                     int run= i - survivor[j];
03100                     int score= distortion + length[UNI_AC_ENC_INDEX(run, level)]*lambda;
03101                     score += score_tab[i-run];
03102 
03103                     if(score < best_score){
03104                         best_score= score;
03105                         run_tab[i+1]= run;
03106                         level_tab[i+1]= level-64;
03107                     }
03108                 }
03109 
03110                 if(s->out_format == FMT_H263){
03111                     for(j=survivor_count-1; j>=0; j--){
03112                         int run= i - survivor[j];
03113                         int score= distortion + last_length[UNI_AC_ENC_INDEX(run, level)]*lambda;
03114                         score += score_tab[i-run];
03115                         if(score < last_score){
03116                             last_score= score;
03117                             last_run= run;
03118                             last_level= level-64;
03119                             last_i= i+1;
03120                         }
03121                     }
03122                 }
03123             }else{
03124                 distortion += esc_length*lambda;
03125                 for(j=survivor_count-1; j>=0; j--){
03126                     int run= i - survivor[j];
03127                     int score= distortion + score_tab[i-run];
03128 
03129                     if(score < best_score){
03130                         best_score= score;
03131                         run_tab[i+1]= run;
03132                         level_tab[i+1]= level-64;
03133                     }
03134                 }
03135 
03136                 if(s->out_format == FMT_H263){
03137                   for(j=survivor_count-1; j>=0; j--){
03138                         int run= i - survivor[j];
03139                         int score= distortion + score_tab[i-run];
03140                         if(score < last_score){
03141                             last_score= score;
03142                             last_run= run;
03143                             last_level= level-64;
03144                             last_i= i+1;
03145                         }
03146                     }
03147                 }
03148             }
03149         }
03150 
03151         score_tab[i+1]= best_score;
03152 
03153         //Note: there is a vlc code in mpeg4 which is 1 bit shorter then another one with a shorter run and the same level
03154         if(last_non_zero <= 27){
03155             for(; survivor_count; survivor_count--){
03156                 if(score_tab[ survivor[survivor_count-1] ] <= best_score)
03157                     break;
03158             }
03159         }else{
03160             for(; survivor_count; survivor_count--){
03161                 if(score_tab[ survivor[survivor_count-1] ] <= best_score + lambda)
03162                     break;
03163             }
03164         }
03165 
03166         survivor[ survivor_count++ ]= i+1;
03167     }
03168 
03169     if(s->out_format != FMT_H263){
03170         last_score= 256*256*256*120;
03171         for(i= survivor[0]; i<=last_non_zero + 1; i++){
03172             int score= score_tab[i];
03173             if(i) score += lambda*2; //FIXME exacter?
03174 
03175             if(score < last_score){
03176                 last_score= score;
03177                 last_i= i;
03178                 last_level= level_tab[i];
03179                 last_run= run_tab[i];
03180             }
03181         }
03182     }
03183 
03184     s->coded_score[n] = last_score;
03185 
03186     dc= FFABS(block[0]);
03187     last_non_zero= last_i - 1;
03188     memset(block + start_i, 0, (64-start_i)*sizeof(DCTELEM));
03189 
03190     if(last_non_zero < start_i)
03191         return last_non_zero;
03192 
03193     if(last_non_zero == 0 && start_i == 0){
03194         int best_level= 0;
03195         int best_score= dc * dc;
03196 
03197         for(i=0; i<coeff_count[0]; i++){
03198             int level= coeff[i][0];
03199             int alevel= FFABS(level);
03200             int unquant_coeff, score, distortion;
03201 
03202             if(s->out_format == FMT_H263){
03203                     unquant_coeff= (alevel*qmul + qadd)>>3;
03204             }else{ //MPEG1
03205                     unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[0])) >> 4;
03206                     unquant_coeff =   (unquant_coeff - 1) | 1;
03207             }
03208             unquant_coeff = (unquant_coeff + 4) >> 3;
03209             unquant_coeff<<= 3 + 3;
03210 
03211             distortion= (unquant_coeff - dc) * (unquant_coeff - dc);
03212             level+=64;
03213             if((level&(~127)) == 0) score= distortion + last_length[UNI_AC_ENC_INDEX(0, level)]*lambda;
03214             else                    score= distortion + esc_length*lambda;
03215 
03216             if(score < best_score){
03217                 best_score= score;
03218                 best_level= level - 64;
03219             }
03220         }
03221         block[0]= best_level;
03222         s->coded_score[n] = best_score - dc*dc;
03223         if(best_level == 0) return -1;
03224         else                return last_non_zero;
03225     }
03226 
03227     i= last_i;
03228     assert(last_level);
03229 
03230     block[ perm_scantable[last_non_zero] ]= last_level;
03231     i -= last_run + 1;
03232 
03233     for(; i>start_i; i -= run_tab[i] + 1){
03234         block[ perm_scantable[i-1] ]= level_tab[i];
03235     }
03236 
03237     return last_non_zero;
03238 }
03239 
03240 //#define REFINE_STATS 1
03241 static int16_t basis[64][64];
03242 
03243 static void build_basis(uint8_t *perm){
03244     int i, j, x, y;
03245     emms_c();
03246     for(i=0; i<8; i++){
03247         for(j=0; j<8; j++){
03248             for(y=0; y<8; y++){
03249                 for(x=0; x<8; x++){
03250                     double s= 0.25*(1<<BASIS_SHIFT);
03251                     int index= 8*i + j;
03252                     int perm_index= perm[index];
03253                     if(i==0) s*= sqrt(0.5);
03254                     if(j==0) s*= sqrt(0.5);
03255                     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)));
03256                 }
03257             }
03258         }
03259     }
03260 }
03261 
03262 static int dct_quantize_refine(MpegEncContext *s, //FIXME breaks denoise?
03263                         DCTELEM *block, int16_t *weight, DCTELEM *orig,
03264                         int n, int qscale){
03265     int16_t rem[64];
03266     DECLARE_ALIGNED_16(DCTELEM, d1[64]);
03267     const int *qmat;
03268     const uint8_t *scantable= s->intra_scantable.scantable;
03269     const uint8_t *perm_scantable= s->intra_scantable.permutated;
03270 //    unsigned int threshold1, threshold2;
03271 //    int bias=0;
03272     int run_tab[65];
03273     int prev_run=0;
03274     int prev_level=0;
03275     int qmul, qadd, start_i, last_non_zero, i, dc;
03276     uint8_t * length;
03277     uint8_t * last_length;
03278     int lambda;
03279     int rle_index, run, q = 1, sum; //q is only used when s->mb_intra is true
03280 #ifdef REFINE_STATS
03281 static int count=0;
03282 static int after_last=0;
03283 static int to_zero=0;
03284 static int from_zero=0;
03285 static int raise=0;
03286 static int lower=0;
03287 static int messed_sign=0;
03288 #endif
03289 
03290     if(basis[0][0] == 0)
03291         build_basis(s->dsp.idct_permutation);
03292 
03293     qmul= qscale*2;
03294     qadd= (qscale-1)|1;
03295     if (s->mb_intra) {
03296         if (!s->h263_aic) {
03297             if (n < 4)
03298                 q = s->y_dc_scale;
03299             else
03300                 q = s->c_dc_scale;
03301         } else{
03302             /* For AIC we skip quant/dequant of INTRADC */
03303             q = 1;
03304             qadd=0;
03305         }
03306         q <<= RECON_SHIFT-3;
03307         /* note: block[0] is assumed to be positive */
03308         dc= block[0]*q;
03309 //        block[0] = (block[0] + (q >> 1)) / q;
03310         start_i = 1;
03311         qmat = s->q_intra_matrix[qscale];
03312 //        if(s->mpeg_quant || s->out_format == FMT_MPEG1)
03313 //            bias= 1<<(QMAT_SHIFT-1);
03314         length     = s->intra_ac_vlc_length;
03315         last_length= s->intra_ac_vlc_last_length;
03316     } else {
03317         dc= 0;
03318         start_i = 0;
03319         qmat = s->q_inter_matrix[qscale];
03320         length     = s->inter_ac_vlc_length;
03321         last_length= s->inter_ac_vlc_last_length;
03322     }
03323     last_non_zero = s->block_last_index[n];
03324 
03325 #ifdef REFINE_STATS
03326 {START_TIMER
03327 #endif
03328     dc += (1<<(RECON_SHIFT-1));
03329     for(i=0; i<64; i++){
03330         rem[i]= dc - (orig[i]<<RECON_SHIFT); //FIXME  use orig dirrectly instead of copying to rem[]
03331     }
03332 #ifdef REFINE_STATS
03333 STOP_TIMER("memset rem[]")}
03334 #endif
03335     sum=0;
03336     for(i=0; i<64; i++){
03337         int one= 36;
03338         int qns=4;
03339         int w;
03340 
03341         w= FFABS(weight[i]) + qns*one;
03342         w= 15 + (48*qns*one + w/2)/w; // 16 .. 63
03343 
03344         weight[i] = w;
03345 //        w=weight[i] = (63*qns + (w/2)) / w;
03346 
03347         assert(w>0);
03348         assert(w<(1<<6));
03349         sum += w*w;
03350     }
03351     lambda= sum*(uint64_t)s->lambda2 >> (FF_LAMBDA_SHIFT - 6 + 6 + 6 + 6);
03352 #ifdef REFINE_STATS
03353 {START_TIMER
03354 #endif
03355     run=0;
03356     rle_index=0;
03357     for(i=start_i; i<=last_non_zero; i++){
03358         int j= perm_scantable[i];
03359         const int level= block[j];
03360         int coeff;
03361 
03362         if(level){
03363             if(level<0) coeff= qmul*level - qadd;
03364             else        coeff= qmul*level + qadd;
03365             run_tab[rle_index++]=run;
03366             run=0;
03367 
03368             s->dsp.add_8x8basis(rem, basis[j], coeff);
03369         }else{
03370             run++;
03371         }
03372     }
03373 #ifdef REFINE_STATS
03374 if(last_non_zero>0){
03375 STOP_TIMER("init rem[]")
03376 }
03377 }
03378 
03379 {START_TIMER
03380 #endif
03381     for(;;){
03382         int best_score=s->dsp.try_8x8basis(rem, weight, basis[0], 0);
03383         int best_coeff=0;
03384         int best_change=0;
03385         int run2, best_unquant_change=0, analyze_gradient;
03386 #ifdef REFINE_STATS
03387 {START_TIMER
03388 #endif
03389         analyze_gradient = last_non_zero > 2 || s->avctx->quantizer_noise_shaping >= 3;
03390 
03391         if(analyze_gradient){
03392 #ifdef REFINE_STATS
03393 {START_TIMER
03394 #endif
03395             for(i=0; i<64; i++){
03396                 int w= weight[i];
03397 
03398                 d1[i] = (rem[i]*w*w + (1<<(RECON_SHIFT+12-1)))>>(RECON_SHIFT+12);
03399             }
03400 #ifdef REFINE_STATS
03401 STOP_TIMER("rem*w*w")}
03402 {START_TIMER
03403 #endif
03404             s->dsp.fdct(d1);
03405 #ifdef REFINE_STATS
03406 STOP_TIMER("dct")}
03407 #endif
03408         }
03409 
03410         if(start_i){
03411             const int level= block[0];
03412             int change, old_coeff;
03413 
03414             assert(s->mb_intra);
03415 
03416             old_coeff= q*level;
03417 
03418             for(change=-1; change<=1; change+=2){
03419                 int new_level= level + change;
03420                 int score, new_coeff;
03421 
03422                 new_coeff= q*new_level;
03423                 if(new_coeff >= 2048 || new_coeff < 0)
03424                     continue;
03425 
03426                 score= s->dsp.try_8x8basis(rem, weight, basis[0], new_coeff - old_coeff);
03427                 if(score<best_score){
03428                     best_score= score;
03429                     best_coeff= 0;
03430                     best_change= change;
03431                     best_unquant_change= new_coeff - old_coeff;
03432                 }
03433             }
03434         }
03435 
03436         run=0;
03437         rle_index=0;
03438         run2= run_tab[rle_index++];
03439         prev_level=0;
03440         prev_run=0;
03441 
03442         for(i=start_i; i<64; i++){
03443             int j= perm_scantable[i];
03444             const int level= block[j];
03445             int change, old_coeff;
03446 
03447             if(s->avctx->quantizer_noise_shaping < 3 && i > last_non_zero + 1)
03448                 break;
03449 
03450             if(level){
03451                 if(level<0) old_coeff= qmul*level - qadd;
03452                 else        old_coeff= qmul*level + qadd;
03453                 run2= run_tab[rle_index++]; //FIXME ! maybe after last
03454             }else{
03455                 old_coeff=0;
03456                 run2--;
03457                 assert(run2>=0 || i >= last_non_zero );
03458             }
03459 
03460             for(change=-1; change<=1; change+=2){
03461                 int new_level= level + change;
03462                 int score, new_coeff, unquant_change;
03463 
03464                 score=0;
03465                 if(s->avctx->quantizer_noise_shaping < 2 && FFABS(new_level) > FFABS(level))
03466                    continue;
03467 
03468                 if(new_level){
03469                     if(new_level<0) new_coeff= qmul*new_level - qadd;
03470                     else            new_coeff= qmul*new_level + qadd;
03471                     if(new_coeff >= 2048 || new_coeff <= -2048)
03472                         continue;
03473                     //FIXME check for overflow
03474 
03475                     if(level){
03476                         if(level < 63 && level > -63){
03477                             if(i < last_non_zero)
03478                                 score +=   length[UNI_AC_ENC_INDEX(run, new_level+64)]
03479                                          - length[UNI_AC_ENC_INDEX(run, level+64)];
03480                             else
03481                                 score +=   last_length[UNI_AC_ENC_INDEX(run, new_level+64)]
03482                                          - last_length[UNI_AC_ENC_INDEX(run, level+64)];
03483                         }
03484                     }else{
03485                         assert(FFABS(new_level)==1);
03486 
03487                         if(analyze_gradient){
03488                             int g= d1[ scantable[i] ];
03489                             if(g && (g^new_level) >= 0)
03490                                 continue;
03491                         }
03492 
03493                         if(i < last_non_zero){
03494                             int next_i= i + run2 + 1;
03495                             int next_level= block[ perm_scantable[next_i] ] + 64;
03496 
03497                             if(next_level&(~127))
03498                                 next_level= 0;
03499 
03500                             if(next_i < last_non_zero)
03501                                 score +=   length[UNI_AC_ENC_INDEX(run, 65)]
03502                                          + length[UNI_AC_ENC_INDEX(run2, next_level)]
03503                                          - length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
03504                             else
03505                                 score +=  length[UNI_AC_ENC_INDEX(run, 65)]
03506                                         + last_length[UNI_AC_ENC_INDEX(run2, next_level)]
03507                                         - last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
03508                         }else{
03509                             score += last_length[UNI_AC_ENC_INDEX(run, 65)];
03510                             if(prev_level){
03511                                 score +=  length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
03512                                         - last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
03513                             }
03514                         }
03515                     }
03516                 }else{
03517                     new_coeff=0;
03518                     assert(FFABS(level)==1);
03519 
03520                     if(i < last_non_zero){
03521                         int next_i= i + run2 + 1;
03522                         int next_level= block[ perm_scantable[next_i] ] + 64;
03523 
03524                         if(next_level&(~127))
03525                             next_level= 0;
03526 
03527                         if(next_i < last_non_zero)
03528                             score +=   length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
03529                                      - length[UNI_AC_ENC_INDEX(run2, next_level)]
03530                                      - length[UNI_AC_ENC_INDEX(run, 65)];
03531                         else
03532                             score +=   last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
03533                                      - last_length[UNI_AC_ENC_INDEX(run2, next_level)]
03534                                      - length[UNI_AC_ENC_INDEX(run, 65)];
03535                     }else{
03536                         score += -last_length[UNI_AC_ENC_INDEX(run, 65)];
03537                         if(prev_level){
03538                             score +=  last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
03539                                     - length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
03540                         }
03541                     }
03542                 }
03543 
03544                 score *= lambda;
03545 
03546                 unquant_change= new_coeff - old_coeff;
03547                 assert((score < 100*lambda && score > -100*lambda) || lambda==0);
03548 
03549                 score+= s->dsp.try_8x8basis(rem, weight, basis[j], unquant_change);
03550                 if(score<best_score){
03551                     best_score= score;
03552                     best_coeff= i;
03553                     best_change= change;
03554                     best_unquant_change= unquant_change;
03555                 }
03556             }
03557             if(level){
03558                 prev_level= level + 64;
03559                 if(prev_level&(~127))
03560                     prev_level= 0;
03561                 prev_run= run;
03562                 run=0;
03563             }else{
03564                 run++;
03565             }
03566         }
03567 #ifdef REFINE_STATS
03568 STOP_TIMER("iterative step")}
03569 #endif
03570 
03571         if(best_change){
03572             int j= perm_scantable[ best_coeff ];
03573 
03574             block[j] += best_change;
03575 
03576             if(best_coeff > last_non_zero){
03577                 last_non_zero= best_coeff;
03578                 assert(block[j]);
03579 #ifdef REFINE_STATS
03580 after_last++;
03581 #endif
03582             }else{
03583 #ifdef REFINE_STATS
03584 if(block[j]){
03585     if(block[j] - best_change){
03586         if(FFABS(block[j]) > FFABS(block[j] - best_change)){
03587             raise++;
03588         }else{
03589             lower++;
03590         }
03591     }else{
03592         from_zero++;
03593     }
03594 }else{
03595     to_zero++;
03596 }
03597 #endif
03598                 for(; last_non_zero>=start_i; last_non_zero--){
03599                     if(block[perm_scantable[last_non_zero]])
03600                         break;
03601                 }
03602             }
03603 #ifdef REFINE_STATS
03604 count++;
03605 if(256*256*256*64 % count == 0){
03606     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);
03607 }
03608 #endif
03609             run=0;
03610             rle_index=0;
03611             for(i=start_i; i<=last_non_zero; i++){
03612                 int j= perm_scantable[i];
03613                 const int level= block[j];
03614 
03615                  if(level){
03616                      run_tab[rle_index++]=run;
03617                      run=0;
03618                  }else{
03619                      run++;
03620                  }
03621             }
03622 
03623             s->dsp.add_8x8basis(rem, basis[j], best_unquant_change);
03624         }else{
03625             break;
03626         }
03627     }
03628 #ifdef REFINE_STATS
03629 if(last_non_zero>0){
03630 STOP_TIMER("iterative search")
03631 }
03632 }
03633 #endif
03634 
03635     return last_non_zero;
03636 }
03637 
03638 int dct_quantize_c(MpegEncContext *s,
03639                         DCTELEM *block, int n,
03640                         int qscale, int *overflow)
03641 {
03642     int i, j, level, last_non_zero, q, start_i;
03643     const int *qmat;
03644     const uint8_t *scantable= s->intra_scantable.scantable;
03645     int bias;
03646     int max=0;
03647     unsigned int threshold1, threshold2;
03648 
03649     s->dsp.fdct (block);
03650 
03651     if(s->dct_error_sum)
03652         s->denoise_dct(s, block);
03653 
03654     if (s->mb_intra) {
03655         if (!s->h263_aic) {
03656             if (n < 4)
03657                 q = s->y_dc_scale;
03658             else
03659                 q = s->c_dc_scale;
03660             q = q << 3;
03661         } else
03662             /* For AIC we skip quant/dequant of INTRADC */
03663             q = 1 << 3;
03664 
03665         /* note: block[0] is assumed to be positive */
03666         block[0] = (block[0] + (q >> 1)) / q;
03667         start_i = 1;
03668         last_non_zero = 0;
03669         qmat = s->q_intra_matrix[qscale];
03670         bias= s->intra_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
03671     } else {
03672         start_i = 0;
03673         last_non_zero = -1;
03674         qmat = s->q_inter_matrix[qscale];
03675         bias= s->inter_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
03676     }
03677     threshold1= (1<<QMAT_SHIFT) - bias - 1;
03678     threshold2= (threshold1<<1);
03679     for(i=63;i>=start_i;i--) {
03680         j = scantable[i];
03681         level = block[j] * qmat[j];
03682 
03683         if(((unsigned)(level+threshold1))>threshold2){
03684             last_non_zero = i;
03685             break;
03686         }else{
03687             block[j]=0;
03688         }
03689     }
03690     for(i=start_i; i<=last_non_zero; i++) {
03691         j = scantable[i];
03692         level = block[j] * qmat[j];
03693 
03694 //        if(   bias+level >= (1<<QMAT_SHIFT)
03695 //           || bias-level >= (1<<QMAT_SHIFT)){
03696         if(((unsigned)(level+threshold1))>threshold2){
03697             if(level>0){
03698                 level= (bias + level)>>QMAT_SHIFT;
03699                 block[j]= level;
03700             }else{
03701                 level= (bias - level)>>QMAT_SHIFT;
03702                 block[j]= -level;
03703             }
03704             max |=level;
03705         }else{
03706             block[j]=0;
03707         }
03708     }
03709     *overflow= s->max_qcoeff < max; //overflow might have happened
03710 
03711     /* we need this permutation so that we correct the IDCT, we only permute the !=0 elements */
03712     if (s->dsp.idct_permutation_type != FF_NO_IDCT_PERM)
03713         ff_block_permute(block, s->dsp.idct_permutation, scantable, last_non_zero);
03714 
03715     return last_non_zero;
03716 }
03717 
03718 AVCodec h263_encoder = {
03719     "h263",
03720     CODEC_TYPE_VIDEO,
03721     CODEC_ID_H263,
03722     sizeof(MpegEncContext),
03723     MPV_encode_init,
03724     MPV_encode_picture,
03725     MPV_encode_end,
03726     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
03727     .long_name= NULL_IF_CONFIG_SMALL("H.263 / H.263-1996"),
03728 };
03729 
03730 AVCodec h263p_encoder = {
03731     "h263p",
03732     CODEC_TYPE_VIDEO,
03733     CODEC_ID_H263P,
03734     sizeof(MpegEncContext),
03735     MPV_encode_init,
03736     MPV_encode_picture,
03737     MPV_encode_end,
03738     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
03739     .long_name= NULL_IF_CONFIG_SMALL("H.263+ / H.263-1998 / H.263 version 2"),
03740 };
03741 
03742 AVCodec flv_encoder = {
03743     "flv",
03744     CODEC_TYPE_VIDEO,
03745     CODEC_ID_FLV1,
03746     sizeof(MpegEncContext),
03747     MPV_encode_init,
03748     MPV_encode_picture,
03749     MPV_encode_end,
03750     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
03751     .long_name= NULL_IF_CONFIG_SMALL("Flash Video (FLV)"),
03752 };
03753 
03754 AVCodec rv10_encoder = {
03755     "rv10",
03756     CODEC_TYPE_VIDEO,
03757     CODEC_ID_RV10,
03758     sizeof(MpegEncContext),
03759     MPV_encode_init,
03760     MPV_encode_picture,
03761     MPV_encode_end,
03762     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
03763     .long_name= NULL_IF_CONFIG_SMALL("RealVideo 1.0"),
03764 };
03765 
03766 AVCodec rv20_encoder = {
03767     "rv20",
03768     CODEC_TYPE_VIDEO,
03769     CODEC_ID_RV20,
03770     sizeof(MpegEncContext),
03771     MPV_encode_init,
03772     MPV_encode_picture,
03773     MPV_encode_end,
03774     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
03775     .long_name= NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
03776 };
03777 
03778 AVCodec mpeg4_encoder = {
03779     "mpeg4",
03780     CODEC_TYPE_VIDEO,
03781     CODEC_ID_MPEG4,
03782     sizeof(MpegEncContext),
03783     MPV_encode_init,
03784     MPV_encode_picture,
03785     MPV_encode_end,
03786     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
03787     .capabilities= CODEC_CAP_DELAY,
03788     .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2"),
03789 };
03790 
03791 AVCodec msmpeg4v1_encoder = {
03792     "msmpeg4v1",
03793     CODEC_TYPE_VIDEO,
03794     CODEC_ID_MSMPEG4V1,
03795     sizeof(MpegEncContext),
03796     MPV_encode_init,
03797     MPV_encode_picture,
03798     MPV_encode_end,
03799     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
03800     .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 1"),
03801 };
03802 
03803 AVCodec msmpeg4v2_encoder = {
03804     "msmpeg4v2",
03805     CODEC_TYPE_VIDEO,
03806     CODEC_ID_MSMPEG4V2,
03807     sizeof(MpegEncContext),
03808     MPV_encode_init,
03809     MPV_encode_picture,
03810     MPV_encode_end,
03811     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
03812     .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"),
03813 };
03814 
03815 AVCodec msmpeg4v3_encoder = {
03816     "msmpeg4",
03817     CODEC_TYPE_VIDEO,
03818     CODEC_ID_MSMPEG4V3,
03819     sizeof(MpegEncContext),
03820     MPV_encode_init,
03821     MPV_encode_picture,
03822     MPV_encode_end,
03823     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
03824     .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"),
03825 };
03826 
03827 AVCodec wmv1_encoder = {
03828     "wmv1",
03829     CODEC_TYPE_VIDEO,
03830     CODEC_ID_WMV1,
03831     sizeof(MpegEncContext),
03832     MPV_encode_init,
03833     MPV_encode_picture,
03834     MPV_encode_end,
03835     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
03836     .long_name= NULL_IF_CONFIG_SMALL("Windows Media Video 7"),
03837 };

Generated on Tue Nov 4 2014 12:59:22 for ffmpeg by  doxygen 1.7.1