LCOV - code coverage report
Current view: top level - libavcodec - mpegvideo.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 985 1332 73.9 %
Date: 2018-05-20 11:54:08 Functions: 41 47 87.2 %

          Line data    Source code
       1             : /*
       2             :  * The simplest mpeg encoder (well, it was the simplest!)
       3             :  * Copyright (c) 2000,2001 Fabrice Bellard
       4             :  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
       5             :  *
       6             :  * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
       7             :  *
       8             :  * This file is part of FFmpeg.
       9             :  *
      10             :  * FFmpeg is free software; you can redistribute it and/or
      11             :  * modify it under the terms of the GNU Lesser General Public
      12             :  * License as published by the Free Software Foundation; either
      13             :  * version 2.1 of the License, or (at your option) any later version.
      14             :  *
      15             :  * FFmpeg is distributed in the hope that it will be useful,
      16             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      17             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      18             :  * Lesser General Public License for more details.
      19             :  *
      20             :  * You should have received a copy of the GNU Lesser General Public
      21             :  * License along with FFmpeg; if not, write to the Free Software
      22             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      23             :  */
      24             : 
      25             : /**
      26             :  * @file
      27             :  * The simplest mpeg encoder (well, it was the simplest!).
      28             :  */
      29             : 
      30             : #include "libavutil/attributes.h"
      31             : #include "libavutil/avassert.h"
      32             : #include "libavutil/imgutils.h"
      33             : #include "libavutil/internal.h"
      34             : #include "libavutil/motion_vector.h"
      35             : #include "libavutil/timer.h"
      36             : #include "avcodec.h"
      37             : #include "blockdsp.h"
      38             : #include "h264chroma.h"
      39             : #include "idctdsp.h"
      40             : #include "internal.h"
      41             : #include "mathops.h"
      42             : #include "mpeg_er.h"
      43             : #include "mpegutils.h"
      44             : #include "mpegvideo.h"
      45             : #include "mpegvideodata.h"
      46             : #include "mjpegenc.h"
      47             : #include "msmpeg4.h"
      48             : #include "qpeldsp.h"
      49             : #include "thread.h"
      50             : #include "wmv2.h"
      51             : #include <limits.h>
      52             : 
      53      126126 : static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
      54             :                                    int16_t *block, int n, int qscale)
      55             : {
      56             :     int i, level, nCoeffs;
      57             :     const uint16_t *quant_matrix;
      58             : 
      59      126126 :     nCoeffs= s->block_last_index[n];
      60             : 
      61      126126 :     block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
      62             :     /* XXX: only MPEG-1 */
      63      126126 :     quant_matrix = s->intra_matrix;
      64     3042075 :     for(i=1;i<=nCoeffs;i++) {
      65     2915949 :         int j= s->intra_scantable.permutated[i];
      66     2915949 :         level = block[j];
      67     2915949 :         if (level) {
      68     1215436 :             if (level < 0) {
      69      604537 :                 level = -level;
      70      604537 :                 level = (int)(level * qscale * quant_matrix[j]) >> 3;
      71      604537 :                 level = (level - 1) | 1;
      72      604537 :                 level = -level;
      73             :             } else {
      74      610899 :                 level = (int)(level * qscale * quant_matrix[j]) >> 3;
      75      610899 :                 level = (level - 1) | 1;
      76             :             }
      77     1215436 :             block[j] = level;
      78             :         }
      79             :     }
      80      126126 : }
      81             : 
      82      285535 : static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
      83             :                                    int16_t *block, int n, int qscale)
      84             : {
      85             :     int i, level, nCoeffs;
      86             :     const uint16_t *quant_matrix;
      87             : 
      88      285535 :     nCoeffs= s->block_last_index[n];
      89             : 
      90      285535 :     quant_matrix = s->inter_matrix;
      91     9502845 :     for(i=0; i<=nCoeffs; i++) {
      92     9217310 :         int j= s->intra_scantable.permutated[i];
      93     9217310 :         level = block[j];
      94     9217310 :         if (level) {
      95     2101549 :             if (level < 0) {
      96     1052132 :                 level = -level;
      97     2104264 :                 level = (((level << 1) + 1) * qscale *
      98     1052132 :                          ((int) (quant_matrix[j]))) >> 4;
      99     1052132 :                 level = (level - 1) | 1;
     100     1052132 :                 level = -level;
     101             :             } else {
     102     2098834 :                 level = (((level << 1) + 1) * qscale *
     103     1049417 :                          ((int) (quant_matrix[j]))) >> 4;
     104     1049417 :                 level = (level - 1) | 1;
     105             :             }
     106     2101549 :             block[j] = level;
     107             :         }
     108             :     }
     109      285535 : }
     110             : 
     111           0 : static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
     112             :                                    int16_t *block, int n, int qscale)
     113             : {
     114             :     int i, level, nCoeffs;
     115             :     const uint16_t *quant_matrix;
     116             : 
     117           0 :     if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
     118           0 :     else                 qscale <<= 1;
     119             : 
     120           0 :     if(s->alternate_scan) nCoeffs= 63;
     121           0 :     else nCoeffs= s->block_last_index[n];
     122             : 
     123           0 :     block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
     124           0 :     quant_matrix = s->intra_matrix;
     125           0 :     for(i=1;i<=nCoeffs;i++) {
     126           0 :         int j= s->intra_scantable.permutated[i];
     127           0 :         level = block[j];
     128           0 :         if (level) {
     129           0 :             if (level < 0) {
     130           0 :                 level = -level;
     131           0 :                 level = (int)(level * qscale * quant_matrix[j]) >> 4;
     132           0 :                 level = -level;
     133             :             } else {
     134           0 :                 level = (int)(level * qscale * quant_matrix[j]) >> 4;
     135             :             }
     136           0 :             block[j] = level;
     137             :         }
     138             :     }
     139           0 : }
     140             : 
     141     1004864 : static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
     142             :                                    int16_t *block, int n, int qscale)
     143             : {
     144             :     int i, level, nCoeffs;
     145             :     const uint16_t *quant_matrix;
     146     1004864 :     int sum=-1;
     147             : 
     148     1004864 :     if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
     149     1004864 :     else                 qscale <<= 1;
     150             : 
     151     1004864 :     if(s->alternate_scan) nCoeffs= 63;
     152     1004864 :     else nCoeffs= s->block_last_index[n];
     153             : 
     154     1004864 :     block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
     155     1004864 :     sum += block[0];
     156     1004864 :     quant_matrix = s->intra_matrix;
     157    19033337 :     for(i=1;i<=nCoeffs;i++) {
     158    18028473 :         int j= s->intra_scantable.permutated[i];
     159    18028473 :         level = block[j];
     160    18028473 :         if (level) {
     161     8890498 :             if (level < 0) {
     162     4472731 :                 level = -level;
     163     4472731 :                 level = (int)(level * qscale * quant_matrix[j]) >> 4;
     164     4472731 :                 level = -level;
     165             :             } else {
     166     4417767 :                 level = (int)(level * qscale * quant_matrix[j]) >> 4;
     167             :             }
     168     8890498 :             block[j] = level;
     169     8890498 :             sum+=level;
     170             :         }
     171             :     }
     172     1004864 :     block[63]^=sum&1;
     173     1004864 : }
     174             : 
     175     2577120 : static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
     176             :                                    int16_t *block, int n, int qscale)
     177             : {
     178             :     int i, level, nCoeffs;
     179             :     const uint16_t *quant_matrix;
     180     2577120 :     int sum=-1;
     181             : 
     182     2577120 :     if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
     183     2577120 :     else                 qscale <<= 1;
     184             : 
     185     2577120 :     if(s->alternate_scan) nCoeffs= 63;
     186     2577120 :     else nCoeffs= s->block_last_index[n];
     187             : 
     188     2577120 :     quant_matrix = s->inter_matrix;
     189    65294556 :     for(i=0; i<=nCoeffs; i++) {
     190    62717436 :         int j= s->intra_scantable.permutated[i];
     191    62717436 :         level = block[j];
     192    62717436 :         if (level) {
     193    22179210 :             if (level < 0) {
     194    11115371 :                 level = -level;
     195    22230742 :                 level = (((level << 1) + 1) * qscale *
     196    11115371 :                          ((int) (quant_matrix[j]))) >> 5;
     197    11115371 :                 level = -level;
     198             :             } else {
     199    22127678 :                 level = (((level << 1) + 1) * qscale *
     200    11063839 :                          ((int) (quant_matrix[j]))) >> 5;
     201             :             }
     202    22179210 :             block[j] = level;
     203    22179210 :             sum+=level;
     204             :         }
     205             :     }
     206     2577120 :     block[63]^=sum&1;
     207     2577120 : }
     208             : 
     209     3363228 : static void dct_unquantize_h263_intra_c(MpegEncContext *s,
     210             :                                   int16_t *block, int n, int qscale)
     211             : {
     212             :     int i, level, qmul, qadd;
     213             :     int nCoeffs;
     214             : 
     215             :     av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
     216             : 
     217     3363228 :     qmul = qscale << 1;
     218             : 
     219     3363228 :     if (!s->h263_aic) {
     220     3190032 :         block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
     221     3190032 :         qadd = (qscale - 1) | 1;
     222             :     }else{
     223      173196 :         qadd = 0;
     224             :     }
     225     3363228 :     if(s->ac_pred)
     226       68304 :         nCoeffs=63;
     227             :     else
     228     3294924 :         nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
     229             : 
     230   120195275 :     for(i=1; i<=nCoeffs; i++) {
     231   116832047 :         level = block[i];
     232   116832047 :         if (level) {
     233    35700964 :             if (level < 0) {
     234    17877171 :                 level = level * qmul - qadd;
     235             :             } else {
     236    17823793 :                 level = level * qmul + qadd;
     237             :             }
     238    35700964 :             block[i] = level;
     239             :         }
     240             :     }
     241     3363228 : }
     242             : 
     243     6014662 : static void dct_unquantize_h263_inter_c(MpegEncContext *s,
     244             :                                   int16_t *block, int n, int qscale)
     245             : {
     246             :     int i, level, qmul, qadd;
     247             :     int nCoeffs;
     248             : 
     249             :     av_assert2(s->block_last_index[n]>=0);
     250             : 
     251     6014662 :     qadd = (qscale - 1) | 1;
     252     6014662 :     qmul = qscale << 1;
     253             : 
     254     6014662 :     nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
     255             : 
     256   235641304 :     for(i=0; i<=nCoeffs; i++) {
     257   229626642 :         level = block[i];
     258   229626642 :         if (level) {
     259    48213622 :             if (level < 0) {
     260    24027915 :                 level = level * qmul - qadd;
     261             :             } else {
     262    24185707 :                 level = level * qmul + qadd;
     263             :             }
     264    48213622 :             block[i] = level;
     265             :         }
     266             :     }
     267     6014662 : }
     268             : 
     269             : 
     270           0 : static void gray16(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
     271             : {
     272           0 :     while(h--)
     273           0 :         memset(dst + h*linesize, 128, 16);
     274           0 : }
     275             : 
     276           0 : static void gray8(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
     277             : {
     278           0 :     while(h--)
     279           0 :         memset(dst + h*linesize, 128, 8);
     280           0 : }
     281             : 
     282             : /* init common dct for both encoder and decoder */
     283         735 : static av_cold int dct_init(MpegEncContext *s)
     284             : {
     285         735 :     ff_blockdsp_init(&s->bdsp, s->avctx);
     286         735 :     ff_h264chroma_init(&s->h264chroma, 8); //for lowres
     287         735 :     ff_hpeldsp_init(&s->hdsp, s->avctx->flags);
     288         735 :     ff_mpegvideodsp_init(&s->mdsp);
     289         735 :     ff_videodsp_init(&s->vdsp, s->avctx->bits_per_raw_sample);
     290             : 
     291         735 :     if (s->avctx->debug & FF_DEBUG_NOMC) {
     292             :         int i;
     293           0 :         for (i=0; i<4; i++) {
     294           0 :             s->hdsp.avg_pixels_tab[0][i] = gray16;
     295           0 :             s->hdsp.put_pixels_tab[0][i] = gray16;
     296           0 :             s->hdsp.put_no_rnd_pixels_tab[0][i] = gray16;
     297             : 
     298           0 :             s->hdsp.avg_pixels_tab[1][i] = gray8;
     299           0 :             s->hdsp.put_pixels_tab[1][i] = gray8;
     300           0 :             s->hdsp.put_no_rnd_pixels_tab[1][i] = gray8;
     301             :         }
     302             :     }
     303             : 
     304         735 :     s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_c;
     305         735 :     s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_c;
     306         735 :     s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_c;
     307         735 :     s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_c;
     308         735 :     s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_c;
     309         735 :     if (s->avctx->flags & AV_CODEC_FLAG_BITEXACT)
     310         537 :         s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_bitexact;
     311         735 :     s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_c;
     312             : 
     313             :     if (HAVE_INTRINSICS_NEON)
     314             :         ff_mpv_common_init_neon(s);
     315             : 
     316             :     if (ARCH_ALPHA)
     317             :         ff_mpv_common_init_axp(s);
     318             :     if (ARCH_ARM)
     319             :         ff_mpv_common_init_arm(s);
     320             :     if (ARCH_PPC)
     321             :         ff_mpv_common_init_ppc(s);
     322             :     if (ARCH_X86)
     323         735 :         ff_mpv_common_init_x86(s);
     324             :     if (ARCH_MIPS)
     325             :         ff_mpv_common_init_mips(s);
     326             : 
     327         735 :     return 0;
     328             : }
     329             : 
     330        1059 : av_cold void ff_mpv_idct_init(MpegEncContext *s)
     331             : {
     332        1059 :     ff_idctdsp_init(&s->idsp, s->avctx);
     333             : 
     334             :     /* load & permutate scantables
     335             :      * note: only wmv uses different ones
     336             :      */
     337        1059 :     if (s->alternate_scan) {
     338           0 :         ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan);
     339           0 :         ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan);
     340             :     } else {
     341        1059 :         ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct);
     342        1059 :         ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
     343             :     }
     344        1059 :     ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan);
     345        1059 :     ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
     346        1059 : }
     347             : 
     348       10783 : static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
     349             : {
     350       21566 :     return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, shared, 0,
     351       10783 :                             s->chroma_x_shift, s->chroma_y_shift, s->out_format,
     352             :                             s->mb_stride, s->mb_width, s->mb_height, s->b8_stride,
     353             :                             &s->linesize, &s->uvlinesize);
     354             : }
     355             : 
     356         785 : static int init_duplicate_context(MpegEncContext *s)
     357             : {
     358         785 :     int y_size = s->b8_stride * (2 * s->mb_height + 1);
     359         785 :     int c_size = s->mb_stride * (s->mb_height + 1);
     360         785 :     int yc_size = y_size + 2 * c_size;
     361             :     int i;
     362             : 
     363         785 :     if (s->mb_height & 1)
     364         144 :         yc_size += 2*s->b8_stride + 2*s->mb_stride;
     365             : 
     366         785 :     s->sc.edge_emu_buffer =
     367         785 :     s->me.scratchpad   =
     368         785 :     s->me.temp         =
     369         785 :     s->sc.rd_scratchpad   =
     370         785 :     s->sc.b_scratchpad    =
     371         785 :     s->sc.obmc_scratchpad = NULL;
     372             : 
     373         785 :     if (s->encoding) {
     374         194 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map,
     375             :                           ME_MAP_SIZE * sizeof(uint32_t), fail)
     376         194 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->me.score_map,
     377             :                           ME_MAP_SIZE * sizeof(uint32_t), fail)
     378         194 :         if (s->noise_reduction) {
     379           4 :             FF_ALLOCZ_OR_GOTO(s->avctx, s->dct_error_sum,
     380             :                               2 * 64 * sizeof(int), fail)
     381             :         }
     382             :     }
     383         785 :     FF_ALLOCZ_OR_GOTO(s->avctx, s->blocks, 64 * 12 * 2 * sizeof(int16_t), fail)
     384         785 :     s->block = s->blocks[0];
     385             : 
     386       10205 :     for (i = 0; i < 12; i++) {
     387        9420 :         s->pblocks[i] = &s->block[i];
     388             :     }
     389             : 
     390         785 :     FF_ALLOCZ_OR_GOTO(s->avctx, s->block32, sizeof(*s->block32), fail)
     391             : 
     392         785 :     if (s->avctx->codec_tag == AV_RL32("VCR2")) {
     393             :         // exchange uv
     394           4 :         FFSWAP(void *, s->pblocks[4], s->pblocks[5]);
     395             :     }
     396             : 
     397         785 :     if (s->out_format == FMT_H263) {
     398             :         /* ac values */
     399         445 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->ac_val_base,
     400             :                           yc_size * sizeof(int16_t) * 16, fail);
     401         445 :         s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
     402         445 :         s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
     403         445 :         s->ac_val[2] = s->ac_val[1] + c_size;
     404             :     }
     405             : 
     406         785 :     return 0;
     407           0 : fail:
     408           0 :     return -1; // free() through ff_mpv_common_end()
     409             : }
     410             : 
     411         802 : static void free_duplicate_context(MpegEncContext *s)
     412             : {
     413         802 :     if (!s)
     414           0 :         return;
     415             : 
     416         802 :     av_freep(&s->sc.edge_emu_buffer);
     417         802 :     av_freep(&s->me.scratchpad);
     418         802 :     s->me.temp =
     419         802 :     s->sc.rd_scratchpad =
     420         802 :     s->sc.b_scratchpad =
     421         802 :     s->sc.obmc_scratchpad = NULL;
     422             : 
     423         802 :     av_freep(&s->dct_error_sum);
     424         802 :     av_freep(&s->me.map);
     425         802 :     av_freep(&s->me.score_map);
     426         802 :     av_freep(&s->blocks);
     427         802 :     av_freep(&s->block32);
     428         802 :     av_freep(&s->ac_val_base);
     429         802 :     s->block = NULL;
     430             : }
     431             : 
     432        1200 : static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
     433             : {
     434             : #define COPY(a) bak->a = src->a
     435        1200 :     COPY(sc.edge_emu_buffer);
     436        1200 :     COPY(me.scratchpad);
     437        1200 :     COPY(me.temp);
     438        1200 :     COPY(sc.rd_scratchpad);
     439        1200 :     COPY(sc.b_scratchpad);
     440        1200 :     COPY(sc.obmc_scratchpad);
     441        1200 :     COPY(me.map);
     442        1200 :     COPY(me.score_map);
     443        1200 :     COPY(blocks);
     444        1200 :     COPY(block);
     445        1200 :     COPY(block32);
     446        1200 :     COPY(start_mb_y);
     447        1200 :     COPY(end_mb_y);
     448        1200 :     COPY(me.map_generation);
     449        1200 :     COPY(pb);
     450        1200 :     COPY(dct_error_sum);
     451        1200 :     COPY(dct_count[0]);
     452        1200 :     COPY(dct_count[1]);
     453        1200 :     COPY(ac_val_base);
     454        1200 :     COPY(ac_val[0]);
     455        1200 :     COPY(ac_val[1]);
     456        1200 :     COPY(ac_val[2]);
     457             : #undef COPY
     458        1200 : }
     459             : 
     460         600 : int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
     461             : {
     462             :     MpegEncContext bak;
     463             :     int i, ret;
     464             :     // FIXME copy only needed parts
     465             :     // START_TIMER
     466         600 :     backup_duplicate_context(&bak, dst);
     467         600 :     memcpy(dst, src, sizeof(MpegEncContext));
     468         600 :     backup_duplicate_context(dst, &bak);
     469        7800 :     for (i = 0; i < 12; i++) {
     470        7200 :         dst->pblocks[i] = &dst->block[i];
     471             :     }
     472         600 :     if (dst->avctx->codec_tag == AV_RL32("VCR2")) {
     473             :         // exchange uv
     474           0 :         FFSWAP(void *, dst->pblocks[4], dst->pblocks[5]);
     475             :     }
     476         612 :     if (!dst->sc.edge_emu_buffer &&
     477          12 :         (ret = ff_mpeg_framesize_alloc(dst->avctx, &dst->me,
     478          12 :                                        &dst->sc, dst->linesize)) < 0) {
     479           0 :         av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
     480             :                "scratch buffers.\n");
     481           0 :         return ret;
     482             :     }
     483             :     // STOP_TIMER("update_duplicate_context")
     484             :     // about 10k cycles / 0.01 sec for  1000frames on 1ghz with 2 threads
     485         600 :     return 0;
     486             : }
     487             : 
     488           0 : int ff_mpeg_update_thread_context(AVCodecContext *dst,
     489             :                                   const AVCodecContext *src)
     490             : {
     491             :     int i, ret;
     492           0 :     MpegEncContext *s = dst->priv_data, *s1 = src->priv_data;
     493             : 
     494           0 :     if (dst == src)
     495           0 :         return 0;
     496             : 
     497           0 :     av_assert0(s != s1);
     498             : 
     499             :     // FIXME can parameters change on I-frames?
     500             :     // in that case dst may need a reinit
     501           0 :     if (!s->context_initialized) {
     502             :         int err;
     503           0 :         memcpy(s, s1, sizeof(MpegEncContext));
     504             : 
     505           0 :         s->avctx                 = dst;
     506           0 :         s->bitstream_buffer      = NULL;
     507           0 :         s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
     508             : 
     509           0 :         if (s1->context_initialized){
     510             : //             s->picture_range_start  += MAX_PICTURE_COUNT;
     511             : //             s->picture_range_end    += MAX_PICTURE_COUNT;
     512           0 :             ff_mpv_idct_init(s);
     513           0 :             if((err = ff_mpv_common_init(s)) < 0){
     514           0 :                 memset(s, 0, sizeof(MpegEncContext));
     515           0 :                 s->avctx = dst;
     516           0 :                 return err;
     517             :             }
     518             :         }
     519             :     }
     520             : 
     521           0 :     if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
     522           0 :         s->context_reinit = 0;
     523           0 :         s->height = s1->height;
     524           0 :         s->width  = s1->width;
     525           0 :         if ((ret = ff_mpv_common_frame_size_change(s)) < 0)
     526           0 :             return ret;
     527             :     }
     528             : 
     529           0 :     s->avctx->coded_height  = s1->avctx->coded_height;
     530           0 :     s->avctx->coded_width   = s1->avctx->coded_width;
     531           0 :     s->avctx->width         = s1->avctx->width;
     532           0 :     s->avctx->height        = s1->avctx->height;
     533             : 
     534           0 :     s->coded_picture_number = s1->coded_picture_number;
     535           0 :     s->picture_number       = s1->picture_number;
     536             : 
     537           0 :     av_assert0(!s->picture || s->picture != s1->picture);
     538           0 :     if(s->picture)
     539           0 :     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
     540           0 :         ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
     541           0 :         if (s1->picture && s1->picture[i].f->buf[0] &&
     542           0 :             (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
     543           0 :             return ret;
     544             :     }
     545             : 
     546             : #define UPDATE_PICTURE(pic)\
     547             : do {\
     548             :     ff_mpeg_unref_picture(s->avctx, &s->pic);\
     549             :     if (s1->pic.f && s1->pic.f->buf[0])\
     550             :         ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
     551             :     else\
     552             :         ret = ff_update_picture_tables(&s->pic, &s1->pic);\
     553             :     if (ret < 0)\
     554             :         return ret;\
     555             : } while (0)
     556             : 
     557           0 :     UPDATE_PICTURE(current_picture);
     558           0 :     UPDATE_PICTURE(last_picture);
     559           0 :     UPDATE_PICTURE(next_picture);
     560             : 
     561             : #define REBASE_PICTURE(pic, new_ctx, old_ctx)                                 \
     562             :     ((pic && pic >= old_ctx->picture &&                                       \
     563             :       pic < old_ctx->picture + MAX_PICTURE_COUNT) ?                           \
     564             :         &new_ctx->picture[pic - old_ctx->picture] : NULL)
     565             : 
     566           0 :     s->last_picture_ptr    = REBASE_PICTURE(s1->last_picture_ptr,    s, s1);
     567           0 :     s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
     568           0 :     s->next_picture_ptr    = REBASE_PICTURE(s1->next_picture_ptr,    s, s1);
     569             : 
     570             :     // Error/bug resilience
     571           0 :     s->next_p_frame_damaged = s1->next_p_frame_damaged;
     572           0 :     s->workaround_bugs      = s1->workaround_bugs;
     573           0 :     s->padding_bug_score    = s1->padding_bug_score;
     574             : 
     575             :     // MPEG-4 timing info
     576           0 :     memcpy(&s->last_time_base, &s1->last_time_base,
     577           0 :            (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
     578           0 :            (char *) &s1->last_time_base);
     579             : 
     580             :     // B-frame info
     581           0 :     s->max_b_frames = s1->max_b_frames;
     582           0 :     s->low_delay    = s1->low_delay;
     583           0 :     s->droppable    = s1->droppable;
     584             : 
     585             :     // DivX handling (doesn't work)
     586           0 :     s->divx_packed  = s1->divx_packed;
     587             : 
     588           0 :     if (s1->bitstream_buffer) {
     589           0 :         if (s1->bitstream_buffer_size +
     590           0 :             AV_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size) {
     591           0 :             av_fast_malloc(&s->bitstream_buffer,
     592             :                            &s->allocated_bitstream_buffer_size,
     593           0 :                            s1->allocated_bitstream_buffer_size);
     594           0 :             if (!s->bitstream_buffer) {
     595           0 :                 s->bitstream_buffer_size = 0;
     596           0 :                 return AVERROR(ENOMEM);
     597             :             }
     598             :         }
     599           0 :         s->bitstream_buffer_size = s1->bitstream_buffer_size;
     600           0 :         memcpy(s->bitstream_buffer, s1->bitstream_buffer,
     601           0 :                s1->bitstream_buffer_size);
     602           0 :         memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
     603             :                AV_INPUT_BUFFER_PADDING_SIZE);
     604             :     }
     605             : 
     606             :     // linesize-dependent scratch buffer allocation
     607           0 :     if (!s->sc.edge_emu_buffer)
     608           0 :         if (s1->linesize) {
     609           0 :             if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
     610           0 :                                         &s->sc, s1->linesize) < 0) {
     611           0 :                 av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
     612             :                        "scratch buffers.\n");
     613           0 :                 return AVERROR(ENOMEM);
     614             :             }
     615             :         } else {
     616           0 :             av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
     617             :                    "be allocated due to unknown size.\n");
     618             :         }
     619             : 
     620             :     // MPEG-2/interlacing info
     621           0 :     memcpy(&s->progressive_sequence, &s1->progressive_sequence,
     622             :            (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
     623             : 
     624           0 :     if (!s1->first_field) {
     625           0 :         s->last_pict_type = s1->pict_type;
     626           0 :         if (s1->current_picture_ptr)
     627           0 :             s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f->quality;
     628             :     }
     629             : 
     630           0 :     return 0;
     631             : }
     632             : 
     633             : /**
     634             :  * Set the given MpegEncContext to common defaults
     635             :  * (same for encoding and decoding).
     636             :  * The changed fields will not depend upon the
     637             :  * prior state of the MpegEncContext.
     638             :  */
     639         751 : void ff_mpv_common_defaults(MpegEncContext *s)
     640             : {
     641         751 :     s->y_dc_scale_table      =
     642         751 :     s->c_dc_scale_table      = ff_mpeg1_dc_scale_table;
     643         751 :     s->chroma_qscale_table   = ff_default_chroma_qscale_table;
     644         751 :     s->progressive_frame     = 1;
     645         751 :     s->progressive_sequence  = 1;
     646         751 :     s->picture_structure     = PICT_FRAME;
     647             : 
     648         751 :     s->coded_picture_number  = 0;
     649         751 :     s->picture_number        = 0;
     650             : 
     651         751 :     s->f_code                = 1;
     652         751 :     s->b_code                = 1;
     653             : 
     654         751 :     s->slice_context_count   = 1;
     655         751 : }
     656             : 
     657             : /**
     658             :  * Set the given MpegEncContext to defaults for decoding.
     659             :  * the changed fields will not depend upon
     660             :  * the prior state of the MpegEncContext.
     661             :  */
     662         569 : void ff_mpv_decode_defaults(MpegEncContext *s)
     663             : {
     664         569 :     ff_mpv_common_defaults(s);
     665         569 : }
     666             : 
     667         569 : void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
     668             : {
     669         569 :     s->avctx           = avctx;
     670         569 :     s->width           = avctx->coded_width;
     671         569 :     s->height          = avctx->coded_height;
     672         569 :     s->codec_id        = avctx->codec->id;
     673         569 :     s->workaround_bugs = avctx->workaround_bugs;
     674             : 
     675             :     /* convert fourcc to upper case */
     676         569 :     s->codec_tag          = avpriv_toupper4(avctx->codec_tag);
     677         569 : }
     678             : 
     679             : /**
     680             :  * Initialize and allocates MpegEncContext fields dependent on the resolution.
     681             :  */
     682         773 : static int init_context_frame(MpegEncContext *s)
     683             : {
     684             :     int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
     685             : 
     686         773 :     s->mb_width   = (s->width + 15) / 16;
     687         773 :     s->mb_stride  = s->mb_width + 1;
     688         773 :     s->b8_stride  = s->mb_width * 2 + 1;
     689         773 :     mb_array_size = s->mb_height * s->mb_stride;
     690         773 :     mv_table_size = (s->mb_height + 2) * s->mb_stride + 1;
     691             : 
     692             :     /* set default edge pos, will be overridden
     693             :      * in decode_header if needed */
     694         773 :     s->h_edge_pos = s->mb_width * 16;
     695         773 :     s->v_edge_pos = s->mb_height * 16;
     696             : 
     697         773 :     s->mb_num     = s->mb_width * s->mb_height;
     698             : 
     699         773 :     s->block_wrap[0] =
     700         773 :     s->block_wrap[1] =
     701         773 :     s->block_wrap[2] =
     702         773 :     s->block_wrap[3] = s->b8_stride;
     703         773 :     s->block_wrap[4] =
     704         773 :     s->block_wrap[5] = s->mb_stride;
     705             : 
     706         773 :     y_size  = s->b8_stride * (2 * s->mb_height + 1);
     707         773 :     c_size  = s->mb_stride * (s->mb_height + 1);
     708         773 :     yc_size = y_size + 2   * c_size;
     709             : 
     710         773 :     if (s->mb_height & 1)
     711         143 :         yc_size += 2*s->b8_stride + 2*s->mb_stride;
     712             : 
     713         773 :     FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num + 1) * sizeof(int),
     714             :                       fail); // error resilience code looks cleaner with this
     715       14862 :     for (y = 0; y < s->mb_height; y++)
     716      432816 :         for (x = 0; x < s->mb_width; x++)
     717      418727 :             s->mb_index2xy[x + y * s->mb_width] = x + y * s->mb_stride;
     718             : 
     719         773 :     s->mb_index2xy[s->mb_height * s->mb_width] = (s->mb_height - 1) * s->mb_stride + s->mb_width; // FIXME really needed?
     720             : 
     721         773 :     if (s->encoding) {
     722             :         /* Allocate MV tables */
     723         182 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->p_mv_table_base,                 mv_table_size * 2 * sizeof(int16_t), fail)
     724         182 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->b_forw_mv_table_base,            mv_table_size * 2 * sizeof(int16_t), fail)
     725         182 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->b_back_mv_table_base,            mv_table_size * 2 * sizeof(int16_t), fail)
     726         182 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_forw_mv_table_base,      mv_table_size * 2 * sizeof(int16_t), fail)
     727         182 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_back_mv_table_base,      mv_table_size * 2 * sizeof(int16_t), fail)
     728         182 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->b_direct_mv_table_base,          mv_table_size * 2 * sizeof(int16_t), fail)
     729         182 :         s->p_mv_table            = s->p_mv_table_base + s->mb_stride + 1;
     730         182 :         s->b_forw_mv_table       = s->b_forw_mv_table_base + s->mb_stride + 1;
     731         182 :         s->b_back_mv_table       = s->b_back_mv_table_base + s->mb_stride + 1;
     732         182 :         s->b_bidir_forw_mv_table = s->b_bidir_forw_mv_table_base + s->mb_stride + 1;
     733         182 :         s->b_bidir_back_mv_table = s->b_bidir_back_mv_table_base + s->mb_stride + 1;
     734         182 :         s->b_direct_mv_table     = s->b_direct_mv_table_base + s->mb_stride + 1;
     735             : 
     736             :         /* Allocate MB type table */
     737         182 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_type, mb_array_size * sizeof(uint16_t), fail) // needed for encoding
     738             : 
     739         182 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->lambda_table, mb_array_size * sizeof(int), fail)
     740             : 
     741         182 :         FF_ALLOC_OR_GOTO(s->avctx, s->cplx_tab,
     742             :                          mb_array_size * sizeof(float), fail);
     743         182 :         FF_ALLOC_OR_GOTO(s->avctx, s->bits_tab,
     744             :                          mb_array_size * sizeof(float), fail);
     745             : 
     746             :     }
     747             : 
     748        1304 :     if (s->codec_id == AV_CODEC_ID_MPEG4 ||
     749         531 :         (s->avctx->flags & AV_CODEC_FLAG_INTERLACED_ME)) {
     750             :         /* interlaced direct mode decoding tables */
     751         774 :         for (i = 0; i < 2; i++) {
     752             :             int j, k;
     753        1548 :             for (j = 0; j < 2; j++) {
     754        3096 :                 for (k = 0; k < 2; k++) {
     755        2064 :                     FF_ALLOCZ_OR_GOTO(s->avctx,
     756             :                                       s->b_field_mv_table_base[i][j][k],
     757             :                                       mv_table_size * 2 * sizeof(int16_t),
     758             :                                       fail);
     759        4128 :                     s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] +
     760        2064 :                                                    s->mb_stride + 1;
     761             :                 }
     762        1032 :                 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_select_table [i][j], mb_array_size * 2 * sizeof(uint8_t), fail)
     763        1032 :                 FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_mv_table_base[i][j], mv_table_size * 2 * sizeof(int16_t), fail)
     764        1032 :                 s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j] + s->mb_stride + 1;
     765             :             }
     766         516 :             FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_select_table[i], mb_array_size * 2 * sizeof(uint8_t), fail)
     767             :         }
     768             :     }
     769         773 :     if (s->out_format == FMT_H263) {
     770             :         /* cbp values */
     771         441 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size + (s->mb_height&1)*2*s->b8_stride, fail);
     772         441 :         s->coded_block = s->coded_block_base + s->b8_stride + 1;
     773             : 
     774             :         /* cbp, ac_pred, pred_dir */
     775         441 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->cbp_table     , mb_array_size * sizeof(uint8_t), fail);
     776         441 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->pred_dir_table, mb_array_size * sizeof(uint8_t), fail);
     777             :     }
     778             : 
     779         773 :     if (s->h263_pred || s->h263_plus || !s->encoding) {
     780             :         /* dc values */
     781             :         // MN: we need these for error resilience of intra-frames
     782         672 :         FF_ALLOCZ_OR_GOTO(s->avctx, s->dc_val_base, yc_size * sizeof(int16_t), fail);
     783         672 :         s->dc_val[0] = s->dc_val_base + s->b8_stride + 1;
     784         672 :         s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1;
     785         672 :         s->dc_val[2] = s->dc_val[1] + c_size;
     786     2413164 :         for (i = 0; i < yc_size; i++)
     787     2412492 :             s->dc_val_base[i] = 1024;
     788             :     }
     789             : 
     790             :     /* which mb is an intra block */
     791         773 :     FF_ALLOCZ_OR_GOTO(s->avctx, s->mbintra_table, mb_array_size, fail);
     792         773 :     memset(s->mbintra_table, 1, mb_array_size);
     793             : 
     794             :     /* init macroblock skip table */
     795         773 :     FF_ALLOCZ_OR_GOTO(s->avctx, s->mbskip_table, mb_array_size + 2, fail);
     796             :     // Note the + 1 is for a quicker MPEG-4 slice_end detection
     797             : 
     798         773 :     return ff_mpeg_er_init(s);
     799           0 : fail:
     800           0 :     return AVERROR(ENOMEM);
     801             : }
     802             : 
     803         735 : static void clear_context(MpegEncContext *s)
     804             : {
     805             :     int i, j, k;
     806             : 
     807         735 :     memset(&s->next_picture, 0, sizeof(s->next_picture));
     808         735 :     memset(&s->last_picture, 0, sizeof(s->last_picture));
     809         735 :     memset(&s->current_picture, 0, sizeof(s->current_picture));
     810         735 :     memset(&s->new_picture, 0, sizeof(s->new_picture));
     811             : 
     812         735 :     memset(s->thread_context, 0, sizeof(s->thread_context));
     813             : 
     814         735 :     s->me.map = NULL;
     815         735 :     s->me.score_map = NULL;
     816         735 :     s->dct_error_sum = NULL;
     817         735 :     s->block = NULL;
     818         735 :     s->blocks = NULL;
     819         735 :     s->block32 = NULL;
     820         735 :     memset(s->pblocks, 0, sizeof(s->pblocks));
     821         735 :     s->ac_val_base = NULL;
     822         735 :     s->ac_val[0] =
     823         735 :     s->ac_val[1] =
     824         735 :     s->ac_val[2] =NULL;
     825         735 :     s->sc.edge_emu_buffer = NULL;
     826         735 :     s->me.scratchpad = NULL;
     827         735 :     s->me.temp =
     828         735 :     s->sc.rd_scratchpad =
     829         735 :     s->sc.b_scratchpad =
     830         735 :     s->sc.obmc_scratchpad = NULL;
     831             : 
     832             : 
     833         735 :     s->bitstream_buffer = NULL;
     834         735 :     s->allocated_bitstream_buffer_size = 0;
     835         735 :     s->picture          = NULL;
     836         735 :     s->mb_type          = NULL;
     837         735 :     s->p_mv_table_base  = NULL;
     838         735 :     s->b_forw_mv_table_base = NULL;
     839         735 :     s->b_back_mv_table_base = NULL;
     840         735 :     s->b_bidir_forw_mv_table_base = NULL;
     841         735 :     s->b_bidir_back_mv_table_base = NULL;
     842         735 :     s->b_direct_mv_table_base = NULL;
     843         735 :     s->p_mv_table            = NULL;
     844         735 :     s->b_forw_mv_table       = NULL;
     845         735 :     s->b_back_mv_table       = NULL;
     846         735 :     s->b_bidir_forw_mv_table = NULL;
     847         735 :     s->b_bidir_back_mv_table = NULL;
     848         735 :     s->b_direct_mv_table     = NULL;
     849        2205 :     for (i = 0; i < 2; i++) {
     850        4410 :         for (j = 0; j < 2; j++) {
     851        8820 :             for (k = 0; k < 2; k++) {
     852        5880 :                 s->b_field_mv_table_base[i][j][k] = NULL;
     853        5880 :                 s->b_field_mv_table[i][j][k] = NULL;
     854             :             }
     855        2940 :             s->b_field_select_table[i][j] = NULL;
     856        2940 :             s->p_field_mv_table_base[i][j] = NULL;
     857        2940 :             s->p_field_mv_table[i][j] = NULL;
     858             :         }
     859        1470 :         s->p_field_select_table[i] = NULL;
     860             :     }
     861             : 
     862         735 :     s->dc_val_base = NULL;
     863         735 :     s->coded_block_base = NULL;
     864         735 :     s->mbintra_table = NULL;
     865         735 :     s->cbp_table = NULL;
     866         735 :     s->pred_dir_table = NULL;
     867             : 
     868         735 :     s->mbskip_table = NULL;
     869             : 
     870         735 :     s->er.error_status_table = NULL;
     871         735 :     s->er.er_temp_buffer = NULL;
     872         735 :     s->mb_index2xy = NULL;
     873         735 :     s->lambda_table = NULL;
     874             : 
     875         735 :     s->cplx_tab = NULL;
     876         735 :     s->bits_tab = NULL;
     877         735 : }
     878             : 
     879             : /**
     880             :  * init common structure for both encoder and decoder.
     881             :  * this assumes that some variables like width/height are already set
     882             :  */
     883         735 : av_cold int ff_mpv_common_init(MpegEncContext *s)
     884             : {
     885             :     int i, ret;
     886         735 :     int nb_slices = (HAVE_THREADS &&
     887         735 :                      s->avctx->active_thread_type & FF_THREAD_SLICE) ?
     888         735 :                     s->avctx->thread_count : 1;
     889             : 
     890         735 :     clear_context(s);
     891             : 
     892         735 :     if (s->encoding && s->avctx->slices)
     893          12 :         nb_slices = s->avctx->slices;
     894             : 
     895         735 :     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
     896         126 :         s->mb_height = (s->height + 31) / 32 * 2;
     897             :     else
     898         609 :         s->mb_height = (s->height + 15) / 16;
     899             : 
     900         735 :     if (s->avctx->pix_fmt == AV_PIX_FMT_NONE) {
     901           0 :         av_log(s->avctx, AV_LOG_ERROR,
     902             :                "decoding to AV_PIX_FMT_NONE is not supported.\n");
     903           0 :         return -1;
     904             :     }
     905             : 
     906         735 :     if (nb_slices > MAX_THREADS || (nb_slices > s->mb_height && s->mb_height)) {
     907             :         int max_slices;
     908           0 :         if (s->mb_height)
     909           0 :             max_slices = FFMIN(MAX_THREADS, s->mb_height);
     910             :         else
     911           0 :             max_slices = MAX_THREADS;
     912           0 :         av_log(s->avctx, AV_LOG_WARNING, "too many threads/slices (%d),"
     913             :                " reducing to %d\n", nb_slices, max_slices);
     914           0 :         nb_slices = max_slices;
     915             :     }
     916             : 
     917        1455 :     if ((s->width || s->height) &&
     918         720 :         av_image_check_size(s->width, s->height, 0, s->avctx))
     919           0 :         return -1;
     920             : 
     921         735 :     dct_init(s);
     922             : 
     923             :     /* set chroma shifts */
     924         735 :     ret = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
     925             :                                            &s->chroma_x_shift,
     926             :                                            &s->chroma_y_shift);
     927         735 :     if (ret)
     928           0 :         return ret;
     929             : 
     930         735 :     FF_ALLOCZ_OR_GOTO(s->avctx, s->picture,
     931             :                       MAX_PICTURE_COUNT * sizeof(Picture), fail);
     932       27195 :     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
     933       26460 :         s->picture[i].f = av_frame_alloc();
     934       26460 :         if (!s->picture[i].f)
     935           0 :             goto fail;
     936             :     }
     937         735 :     s->next_picture.f = av_frame_alloc();
     938         735 :     if (!s->next_picture.f)
     939           0 :         goto fail;
     940         735 :     s->last_picture.f = av_frame_alloc();
     941         735 :     if (!s->last_picture.f)
     942           0 :         goto fail;
     943         735 :     s->current_picture.f = av_frame_alloc();
     944         735 :     if (!s->current_picture.f)
     945           0 :         goto fail;
     946         735 :     s->new_picture.f = av_frame_alloc();
     947         735 :     if (!s->new_picture.f)
     948           0 :         goto fail;
     949             : 
     950         735 :     if (init_context_frame(s))
     951           0 :         goto fail;
     952             : 
     953         735 :     s->parse_context.state = -1;
     954             : 
     955         735 :     s->context_initialized = 1;
     956         735 :     memset(s->thread_context, 0, sizeof(s->thread_context));
     957         735 :     s->thread_context[0]   = s;
     958             : 
     959             : //     if (s->width && s->height) {
     960         735 :     if (nb_slices > 1) {
     961          36 :         for (i = 0; i < nb_slices; i++) {
     962          24 :             if (i) {
     963          12 :                 s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
     964          12 :                 if (!s->thread_context[i])
     965           0 :                     goto fail;
     966             :             }
     967          24 :             if (init_duplicate_context(s->thread_context[i]) < 0)
     968           0 :                 goto fail;
     969          48 :             s->thread_context[i]->start_mb_y =
     970          48 :                 (s->mb_height * (i) + nb_slices / 2) / nb_slices;
     971          48 :             s->thread_context[i]->end_mb_y   =
     972          48 :                 (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
     973             :         }
     974             :     } else {
     975         723 :         if (init_duplicate_context(s) < 0)
     976           0 :             goto fail;
     977         723 :         s->start_mb_y = 0;
     978         723 :         s->end_mb_y   = s->mb_height;
     979             :     }
     980         735 :     s->slice_context_count = nb_slices;
     981             : //     }
     982             : 
     983         735 :     return 0;
     984           0 :  fail:
     985           0 :     ff_mpv_common_end(s);
     986           0 :     return -1;
     987             : }
     988             : 
     989             : /**
     990             :  * Frees and resets MpegEncContext fields depending on the resolution.
     991             :  * Is used during resolution changes to avoid a full reinitialization of the
     992             :  * codec.
     993             :  */
     994         790 : static void free_context_frame(MpegEncContext *s)
     995             : {
     996             :     int i, j, k;
     997             : 
     998         790 :     av_freep(&s->mb_type);
     999         790 :     av_freep(&s->p_mv_table_base);
    1000         790 :     av_freep(&s->b_forw_mv_table_base);
    1001         790 :     av_freep(&s->b_back_mv_table_base);
    1002         790 :     av_freep(&s->b_bidir_forw_mv_table_base);
    1003         790 :     av_freep(&s->b_bidir_back_mv_table_base);
    1004         790 :     av_freep(&s->b_direct_mv_table_base);
    1005         790 :     s->p_mv_table            = NULL;
    1006         790 :     s->b_forw_mv_table       = NULL;
    1007         790 :     s->b_back_mv_table       = NULL;
    1008         790 :     s->b_bidir_forw_mv_table = NULL;
    1009         790 :     s->b_bidir_back_mv_table = NULL;
    1010         790 :     s->b_direct_mv_table     = NULL;
    1011        2370 :     for (i = 0; i < 2; i++) {
    1012        4740 :         for (j = 0; j < 2; j++) {
    1013        9480 :             for (k = 0; k < 2; k++) {
    1014        6320 :                 av_freep(&s->b_field_mv_table_base[i][j][k]);
    1015        6320 :                 s->b_field_mv_table[i][j][k] = NULL;
    1016             :             }
    1017        3160 :             av_freep(&s->b_field_select_table[i][j]);
    1018        3160 :             av_freep(&s->p_field_mv_table_base[i][j]);
    1019        3160 :             s->p_field_mv_table[i][j] = NULL;
    1020             :         }
    1021        1580 :         av_freep(&s->p_field_select_table[i]);
    1022             :     }
    1023             : 
    1024         790 :     av_freep(&s->dc_val_base);
    1025         790 :     av_freep(&s->coded_block_base);
    1026         790 :     av_freep(&s->mbintra_table);
    1027         790 :     av_freep(&s->cbp_table);
    1028         790 :     av_freep(&s->pred_dir_table);
    1029             : 
    1030         790 :     av_freep(&s->mbskip_table);
    1031             : 
    1032         790 :     av_freep(&s->er.error_status_table);
    1033         790 :     av_freep(&s->er.er_temp_buffer);
    1034         790 :     av_freep(&s->mb_index2xy);
    1035         790 :     av_freep(&s->lambda_table);
    1036             : 
    1037         790 :     av_freep(&s->cplx_tab);
    1038         790 :     av_freep(&s->bits_tab);
    1039             : 
    1040         790 :     s->linesize = s->uvlinesize = 0;
    1041         790 : }
    1042             : 
    1043          38 : int ff_mpv_common_frame_size_change(MpegEncContext *s)
    1044             : {
    1045          38 :     int i, err = 0;
    1046             : 
    1047          38 :     if (!s->context_initialized)
    1048           0 :         return AVERROR(EINVAL);
    1049             : 
    1050          38 :     if (s->slice_context_count > 1) {
    1051           0 :         for (i = 0; i < s->slice_context_count; i++) {
    1052           0 :             free_duplicate_context(s->thread_context[i]);
    1053             :         }
    1054           0 :         for (i = 1; i < s->slice_context_count; i++) {
    1055           0 :             av_freep(&s->thread_context[i]);
    1056             :         }
    1057             :     } else
    1058          38 :         free_duplicate_context(s);
    1059             : 
    1060          38 :     free_context_frame(s);
    1061             : 
    1062          38 :     if (s->picture)
    1063        1406 :         for (i = 0; i < MAX_PICTURE_COUNT; i++) {
    1064        1368 :                 s->picture[i].needs_realloc = 1;
    1065             :         }
    1066             : 
    1067          38 :     s->last_picture_ptr         =
    1068          38 :     s->next_picture_ptr         =
    1069          38 :     s->current_picture_ptr      = NULL;
    1070             : 
    1071             :     // init
    1072          38 :     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
    1073           0 :         s->mb_height = (s->height + 31) / 32 * 2;
    1074             :     else
    1075          38 :         s->mb_height = (s->height + 15) / 16;
    1076             : 
    1077          76 :     if ((s->width || s->height) &&
    1078          38 :         (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
    1079           0 :         goto fail;
    1080             : 
    1081          38 :     if ((err = init_context_frame(s)))
    1082           0 :         goto fail;
    1083             : 
    1084          38 :     memset(s->thread_context, 0, sizeof(s->thread_context));
    1085          38 :     s->thread_context[0]   = s;
    1086             : 
    1087          38 :     if (s->width && s->height) {
    1088          38 :         int nb_slices = s->slice_context_count;
    1089          38 :         if (nb_slices > 1) {
    1090           0 :             for (i = 0; i < nb_slices; i++) {
    1091           0 :                 if (i) {
    1092           0 :                     s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
    1093           0 :                     if (!s->thread_context[i]) {
    1094           0 :                         err = AVERROR(ENOMEM);
    1095           0 :                         goto fail;
    1096             :                     }
    1097             :                 }
    1098           0 :                 if ((err = init_duplicate_context(s->thread_context[i])) < 0)
    1099           0 :                     goto fail;
    1100           0 :                 s->thread_context[i]->start_mb_y =
    1101           0 :                     (s->mb_height * (i) + nb_slices / 2) / nb_slices;
    1102           0 :                 s->thread_context[i]->end_mb_y   =
    1103           0 :                     (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
    1104             :             }
    1105             :         } else {
    1106          38 :             err = init_duplicate_context(s);
    1107          38 :             if (err < 0)
    1108           0 :                 goto fail;
    1109          38 :             s->start_mb_y = 0;
    1110          38 :             s->end_mb_y   = s->mb_height;
    1111             :         }
    1112          38 :         s->slice_context_count = nb_slices;
    1113             :     }
    1114             : 
    1115          38 :     return 0;
    1116           0 :  fail:
    1117           0 :     ff_mpv_common_end(s);
    1118           0 :     return err;
    1119             : }
    1120             : 
    1121             : /* init common structure for both encoder and decoder */
    1122         752 : void ff_mpv_common_end(MpegEncContext *s)
    1123             : {
    1124             :     int i;
    1125             : 
    1126         752 :     if (!s)
    1127           0 :         return ;
    1128             : 
    1129         752 :     if (s->slice_context_count > 1) {
    1130          36 :         for (i = 0; i < s->slice_context_count; i++) {
    1131          24 :             free_duplicate_context(s->thread_context[i]);
    1132             :         }
    1133          24 :         for (i = 1; i < s->slice_context_count; i++) {
    1134          12 :             av_freep(&s->thread_context[i]);
    1135             :         }
    1136          12 :         s->slice_context_count = 1;
    1137         740 :     } else free_duplicate_context(s);
    1138             : 
    1139         752 :     av_freep(&s->parse_context.buffer);
    1140         752 :     s->parse_context.buffer_size = 0;
    1141             : 
    1142         752 :     av_freep(&s->bitstream_buffer);
    1143         752 :     s->allocated_bitstream_buffer_size = 0;
    1144             : 
    1145         752 :     if (s->picture) {
    1146       27195 :         for (i = 0; i < MAX_PICTURE_COUNT; i++) {
    1147       26460 :             ff_free_picture_tables(&s->picture[i]);
    1148       26460 :             ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
    1149       26460 :             av_frame_free(&s->picture[i].f);
    1150             :         }
    1151             :     }
    1152         752 :     av_freep(&s->picture);
    1153         752 :     ff_free_picture_tables(&s->last_picture);
    1154         752 :     ff_mpeg_unref_picture(s->avctx, &s->last_picture);
    1155         752 :     av_frame_free(&s->last_picture.f);
    1156         752 :     ff_free_picture_tables(&s->current_picture);
    1157         752 :     ff_mpeg_unref_picture(s->avctx, &s->current_picture);
    1158         752 :     av_frame_free(&s->current_picture.f);
    1159         752 :     ff_free_picture_tables(&s->next_picture);
    1160         752 :     ff_mpeg_unref_picture(s->avctx, &s->next_picture);
    1161         752 :     av_frame_free(&s->next_picture.f);
    1162         752 :     ff_free_picture_tables(&s->new_picture);
    1163         752 :     ff_mpeg_unref_picture(s->avctx, &s->new_picture);
    1164         752 :     av_frame_free(&s->new_picture.f);
    1165             : 
    1166         752 :     free_context_frame(s);
    1167             : 
    1168         752 :     s->context_initialized      = 0;
    1169         752 :     s->last_picture_ptr         =
    1170         752 :     s->next_picture_ptr         =
    1171         752 :     s->current_picture_ptr      = NULL;
    1172         752 :     s->linesize = s->uvlinesize = 0;
    1173             : }
    1174             : 
    1175             : 
    1176           0 : static void gray_frame(AVFrame *frame)
    1177             : {
    1178             :     int i, h_chroma_shift, v_chroma_shift;
    1179             : 
    1180           0 :     av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift);
    1181             : 
    1182           0 :     for(i=0; i<frame->height; i++)
    1183           0 :         memset(frame->data[0] + frame->linesize[0]*i, 0x80, frame->width);
    1184           0 :     for(i=0; i<AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) {
    1185           0 :         memset(frame->data[1] + frame->linesize[1]*i,
    1186           0 :                0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
    1187           0 :         memset(frame->data[2] + frame->linesize[2]*i,
    1188           0 :                0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
    1189             :     }
    1190           0 : }
    1191             : 
    1192             : /**
    1193             :  * generic function called after decoding
    1194             :  * the header and before a frame is decoded.
    1195             :  */
    1196       10777 : int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
    1197             : {
    1198             :     int i, ret;
    1199             :     Picture *pic;
    1200       10777 :     s->mb_skipped = 0;
    1201             : 
    1202       10777 :     if (!ff_thread_can_start_frame(avctx)) {
    1203           0 :         av_log(avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
    1204           0 :         return -1;
    1205             :     }
    1206             : 
    1207             :     /* mark & release old frames */
    1208       18604 :     if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
    1209       15654 :         s->last_picture_ptr != s->next_picture_ptr &&
    1210        7827 :         s->last_picture_ptr->f->buf[0]) {
    1211        7827 :         ff_mpeg_unref_picture(s->avctx, s->last_picture_ptr);
    1212             :     }
    1213             : 
    1214             :     /* release forgotten pictures */
    1215             :     /* if (MPEG-124 / H.263) */
    1216      398749 :     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
    1217      765659 :         if (&s->picture[i] != s->last_picture_ptr &&
    1218      744888 :             &s->picture[i] != s->next_picture_ptr &&
    1219      367221 :             s->picture[i].reference && !s->picture[i].needs_realloc) {
    1220           0 :             ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
    1221             :         }
    1222             :     }
    1223             : 
    1224       10777 :     ff_mpeg_unref_picture(s->avctx, &s->current_picture);
    1225       10777 :     ff_mpeg_unref_picture(s->avctx, &s->last_picture);
    1226       10777 :     ff_mpeg_unref_picture(s->avctx, &s->next_picture);
    1227             : 
    1228             :     /* release non reference frames */
    1229      398749 :     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
    1230      387972 :         if (!s->picture[i].reference)
    1231      375008 :             ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
    1232             :     }
    1233             : 
    1234       10777 :     if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
    1235             :         // we already have an unused image
    1236             :         // (maybe it was set before reading the header)
    1237        5966 :         pic = s->current_picture_ptr;
    1238             :     } else {
    1239        4811 :         i   = ff_find_unused_picture(s->avctx, s->picture, 0);
    1240        4811 :         if (i < 0) {
    1241           0 :             av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
    1242           0 :             return i;
    1243             :         }
    1244        4811 :         pic = &s->picture[i];
    1245             :     }
    1246             : 
    1247       10777 :     pic->reference = 0;
    1248       10777 :     if (!s->droppable) {
    1249       10777 :         if (s->pict_type != AV_PICTURE_TYPE_B)
    1250        8319 :             pic->reference = 3;
    1251             :     }
    1252             : 
    1253       10777 :     pic->f->coded_picture_number = s->coded_picture_number++;
    1254             : 
    1255       10777 :     if (alloc_picture(s, pic, 0) < 0)
    1256           0 :         return -1;
    1257             : 
    1258       10777 :     s->current_picture_ptr = pic;
    1259             :     // FIXME use only the vars from current_pic
    1260       10777 :     s->current_picture_ptr->f->top_field_first = s->top_field_first;
    1261       21074 :     if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
    1262       10297 :         s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
    1263        3487 :         if (s->picture_structure != PICT_FRAME)
    1264        1204 :             s->current_picture_ptr->f->top_field_first =
    1265        1204 :                 (s->picture_structure == PICT_TOP_FIELD) == s->first_field;
    1266             :     }
    1267       12679 :     s->current_picture_ptr->f->interlaced_frame = !s->progressive_frame &&
    1268        1902 :                                                  !s->progressive_sequence;
    1269       10777 :     s->current_picture_ptr->field_picture      =  s->picture_structure != PICT_FRAME;
    1270             : 
    1271       10777 :     s->current_picture_ptr->f->pict_type = s->pict_type;
    1272             :     // if (s->avctx->flags && AV_CODEC_FLAG_QSCALE)
    1273             :     //     s->current_picture_ptr->quality = s->new_picture_ptr->quality;
    1274       10777 :     s->current_picture_ptr->f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
    1275             : 
    1276       10777 :     if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
    1277             :                                    s->current_picture_ptr)) < 0)
    1278           0 :         return ret;
    1279             : 
    1280       10777 :     if (s->pict_type != AV_PICTURE_TYPE_B) {
    1281        8319 :         s->last_picture_ptr = s->next_picture_ptr;
    1282        8319 :         if (!s->droppable)
    1283        8319 :             s->next_picture_ptr = s->current_picture_ptr;
    1284             :     }
    1285             :     ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
    1286             :             s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
    1287             :             s->last_picture_ptr    ? s->last_picture_ptr->f->data[0]    : NULL,
    1288             :             s->next_picture_ptr    ? s->next_picture_ptr->f->data[0]    : NULL,
    1289             :             s->current_picture_ptr ? s->current_picture_ptr->f->data[0] : NULL,
    1290             :             s->pict_type, s->droppable);
    1291             : 
    1292       11068 :     if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
    1293         291 :         (s->pict_type != AV_PICTURE_TYPE_I)) {
    1294             :         int h_chroma_shift, v_chroma_shift;
    1295           6 :         av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
    1296             :                                          &h_chroma_shift, &v_chroma_shift);
    1297           6 :         if (s->pict_type == AV_PICTURE_TYPE_B && s->next_picture_ptr && s->next_picture_ptr->f->buf[0])
    1298           0 :             av_log(avctx, AV_LOG_DEBUG,
    1299             :                    "allocating dummy last picture for B frame\n");
    1300           6 :         else if (s->pict_type != AV_PICTURE_TYPE_I)
    1301           6 :             av_log(avctx, AV_LOG_ERROR,
    1302             :                    "warning: first frame is no keyframe\n");
    1303             : 
    1304             :         /* Allocate a dummy frame */
    1305           6 :         i = ff_find_unused_picture(s->avctx, s->picture, 0);
    1306           6 :         if (i < 0) {
    1307           0 :             av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
    1308           0 :             return i;
    1309             :         }
    1310           6 :         s->last_picture_ptr = &s->picture[i];
    1311             : 
    1312           6 :         s->last_picture_ptr->reference   = 3;
    1313           6 :         s->last_picture_ptr->f->key_frame = 0;
    1314           6 :         s->last_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
    1315             : 
    1316           6 :         if (alloc_picture(s, s->last_picture_ptr, 0) < 0) {
    1317           0 :             s->last_picture_ptr = NULL;
    1318           0 :             return -1;
    1319             :         }
    1320             : 
    1321           6 :         if (!avctx->hwaccel) {
    1322        1734 :             for(i=0; i<avctx->height; i++)
    1323        1728 :                 memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i,
    1324        1728 :                        0x80, avctx->width);
    1325           6 :             if (s->last_picture_ptr->f->data[2]) {
    1326         870 :                 for(i=0; i<AV_CEIL_RSHIFT(avctx->height, v_chroma_shift); i++) {
    1327         864 :                     memset(s->last_picture_ptr->f->data[1] + s->last_picture_ptr->f->linesize[1]*i,
    1328         864 :                         0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
    1329         864 :                     memset(s->last_picture_ptr->f->data[2] + s->last_picture_ptr->f->linesize[2]*i,
    1330         864 :                         0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
    1331             :                 }
    1332             :             }
    1333             : 
    1334           6 :             if(s->codec_id == AV_CODEC_ID_FLV1 || s->codec_id == AV_CODEC_ID_H263){
    1335           0 :                 for(i=0; i<avctx->height; i++)
    1336           0 :                 memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i, 16, avctx->width);
    1337             :             }
    1338             :         }
    1339             : 
    1340           6 :         ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
    1341           6 :         ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
    1342             :     }
    1343       10777 :     if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) &&
    1344           0 :         s->pict_type == AV_PICTURE_TYPE_B) {
    1345             :         /* Allocate a dummy frame */
    1346           0 :         i = ff_find_unused_picture(s->avctx, s->picture, 0);
    1347           0 :         if (i < 0) {
    1348           0 :             av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
    1349           0 :             return i;
    1350             :         }
    1351           0 :         s->next_picture_ptr = &s->picture[i];
    1352             : 
    1353           0 :         s->next_picture_ptr->reference   = 3;
    1354           0 :         s->next_picture_ptr->f->key_frame = 0;
    1355           0 :         s->next_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
    1356             : 
    1357           0 :         if (alloc_picture(s, s->next_picture_ptr, 0) < 0) {
    1358           0 :             s->next_picture_ptr = NULL;
    1359           0 :             return -1;
    1360             :         }
    1361           0 :         ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
    1362           0 :         ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
    1363             :     }
    1364             : 
    1365             : #if 0 // BUFREF-FIXME
    1366             :     memset(s->last_picture.f->data, 0, sizeof(s->last_picture.f->data));
    1367             :     memset(s->next_picture.f->data, 0, sizeof(s->next_picture.f->data));
    1368             : #endif
    1369       10777 :     if (s->last_picture_ptr) {
    1370       20984 :         if (s->last_picture_ptr->f->buf[0] &&
    1371       10492 :             (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
    1372             :                                        s->last_picture_ptr)) < 0)
    1373           0 :             return ret;
    1374             :     }
    1375       10777 :     if (s->next_picture_ptr) {
    1376       21554 :         if (s->next_picture_ptr->f->buf[0] &&
    1377       10777 :             (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
    1378             :                                        s->next_picture_ptr)) < 0)
    1379           0 :             return ret;
    1380             :     }
    1381             : 
    1382       10777 :     av_assert0(s->pict_type == AV_PICTURE_TYPE_I || (s->last_picture_ptr &&
    1383             :                                                  s->last_picture_ptr->f->buf[0]));
    1384             : 
    1385       10777 :     if (s->picture_structure!= PICT_FRAME) {
    1386             :         int i;
    1387        3010 :         for (i = 0; i < 4; i++) {
    1388        2408 :             if (s->picture_structure == PICT_BOTTOM_FIELD) {
    1389        4808 :                 s->current_picture.f->data[i] +=
    1390        2404 :                     s->current_picture.f->linesize[i];
    1391             :             }
    1392        2408 :             s->current_picture.f->linesize[i] *= 2;
    1393        2408 :             s->last_picture.f->linesize[i]    *= 2;
    1394        2408 :             s->next_picture.f->linesize[i]    *= 2;
    1395             :         }
    1396             :     }
    1397             : 
    1398             :     /* set dequantizer, we can't do it during init as
    1399             :      * it might change for MPEG-4 and we can't do it in the header
    1400             :      * decode as init is not called for MPEG-4 there yet */
    1401       10777 :     if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
    1402        3047 :         s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
    1403        3047 :         s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
    1404        7730 :     } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
    1405        7250 :         s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
    1406        7250 :         s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
    1407             :     } else {
    1408         480 :         s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra;
    1409         480 :         s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
    1410             :     }
    1411             : 
    1412       10777 :     if (s->avctx->debug & FF_DEBUG_NOMC) {
    1413           0 :         gray_frame(s->current_picture_ptr->f);
    1414             :     }
    1415             : 
    1416       10777 :     return 0;
    1417             : }
    1418             : 
    1419             : /* called after a frame has been decoded. */
    1420       10777 : void ff_mpv_frame_end(MpegEncContext *s)
    1421             : {
    1422       10777 :     emms_c();
    1423             : 
    1424       10777 :     if (s->current_picture.reference)
    1425        8319 :         ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
    1426       10777 : }
    1427             : 
    1428       10598 : void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
    1429             : {
    1430       21196 :     ff_print_debug_info2(s->avctx, pict, s->mbskip_table, p->mb_type,
    1431       10598 :                          p->qscale_table, p->motion_val, &s->low_delay,
    1432             :                          s->mb_width, s->mb_height, s->mb_stride, s->quarter_sample);
    1433       10598 : }
    1434             : 
    1435        9878 : int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
    1436             : {
    1437        9878 :     AVBufferRef *ref = av_buffer_ref(p->qscale_table_buf);
    1438        9878 :     int offset = 2*s->mb_stride + 1;
    1439        9878 :     if(!ref)
    1440           0 :         return AVERROR(ENOMEM);
    1441        9878 :     av_assert0(ref->size >= offset + s->mb_stride * ((f->height+15)/16));
    1442        9878 :     ref->size -= offset;
    1443        9878 :     ref->data += offset;
    1444        9878 :     return av_frame_set_qp_table(f, ref, s->mb_stride, qp_type);
    1445             : }
    1446             : 
    1447      126300 : static inline int hpel_motion_lowres(MpegEncContext *s,
    1448             :                                      uint8_t *dest, uint8_t *src,
    1449             :                                      int field_based, int field_select,
    1450             :                                      int src_x, int src_y,
    1451             :                                      int width, int height, ptrdiff_t stride,
    1452             :                                      int h_edge_pos, int v_edge_pos,
    1453             :                                      int w, int h, h264_chroma_mc_func *pix_op,
    1454             :                                      int motion_x, int motion_y)
    1455             : {
    1456      126300 :     const int lowres   = s->avctx->lowres;
    1457      126300 :     const int op_index = FFMIN(lowres, 3);
    1458      126300 :     const int s_mask   = (2 << lowres) - 1;
    1459      126300 :     int emu = 0;
    1460             :     int sx, sy;
    1461             : 
    1462      126300 :     if (s->quarter_sample) {
    1463           0 :         motion_x /= 2;
    1464           0 :         motion_y /= 2;
    1465             :     }
    1466             : 
    1467      126300 :     sx = motion_x & s_mask;
    1468      126300 :     sy = motion_y & s_mask;
    1469      126300 :     src_x += motion_x >> lowres + 1;
    1470      126300 :     src_y += motion_y >> lowres + 1;
    1471             : 
    1472      126300 :     src   += src_y * stride + src_x;
    1473             : 
    1474      252600 :     if ((unsigned)src_x > FFMAX( h_edge_pos - (!!sx) - w,                 0) ||
    1475      126300 :         (unsigned)src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
    1476         596 :         s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, src,
    1477             :                                  s->linesize, s->linesize,
    1478         298 :                                  w + 1, (h + 1) << field_based,
    1479             :                                  src_x, src_y   << field_based,
    1480             :                                  h_edge_pos, v_edge_pos);
    1481         298 :         src = s->sc.edge_emu_buffer;
    1482         298 :         emu = 1;
    1483             :     }
    1484             : 
    1485      126300 :     sx = (sx << 2) >> lowres;
    1486      126300 :     sy = (sy << 2) >> lowres;
    1487      126300 :     if (field_select)
    1488           0 :         src += s->linesize;
    1489      126300 :     pix_op[op_index](dest, src, stride, h, sx, sy);
    1490      126300 :     return emu;
    1491             : }
    1492             : 
    1493             : /* apply one mpeg motion vector to the three components */
    1494       24814 : static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
    1495             :                                                 uint8_t *dest_y,
    1496             :                                                 uint8_t *dest_cb,
    1497             :                                                 uint8_t *dest_cr,
    1498             :                                                 int field_based,
    1499             :                                                 int bottom_field,
    1500             :                                                 int field_select,
    1501             :                                                 uint8_t **ref_picture,
    1502             :                                                 h264_chroma_mc_func *pix_op,
    1503             :                                                 int motion_x, int motion_y,
    1504             :                                                 int h, int mb_y)
    1505             : {
    1506             :     uint8_t *ptr_y, *ptr_cb, *ptr_cr;
    1507             :     int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, sx, sy, uvsx, uvsy;
    1508             :     ptrdiff_t uvlinesize, linesize;
    1509       24814 :     const int lowres     = s->avctx->lowres;
    1510       24814 :     const int op_index   = FFMIN(lowres-1+s->chroma_x_shift, 3);
    1511       24814 :     const int block_s    = 8>>lowres;
    1512       24814 :     const int s_mask     = (2 << lowres) - 1;
    1513       24814 :     const int h_edge_pos = s->h_edge_pos >> lowres;
    1514       24814 :     const int v_edge_pos = s->v_edge_pos >> lowres;
    1515       24814 :     linesize   = s->current_picture.f->linesize[0] << field_based;
    1516       24814 :     uvlinesize = s->current_picture.f->linesize[1] << field_based;
    1517             : 
    1518             :     // FIXME obviously not perfect but qpel will not work in lowres anyway
    1519       24814 :     if (s->quarter_sample) {
    1520           0 :         motion_x /= 2;
    1521           0 :         motion_y /= 2;
    1522             :     }
    1523             : 
    1524       24814 :     if(field_based){
    1525           0 :         motion_y += (bottom_field - field_select)*((1 << lowres)-1);
    1526             :     }
    1527             : 
    1528       24814 :     sx = motion_x & s_mask;
    1529       24814 :     sy = motion_y & s_mask;
    1530       24814 :     src_x = s->mb_x * 2 * block_s + (motion_x >> lowres + 1);
    1531       24814 :     src_y = (mb_y * 2 * block_s >> field_based) + (motion_y >> lowres + 1);
    1532             : 
    1533       24814 :     if (s->out_format == FMT_H263) {
    1534       24814 :         uvsx    = ((motion_x >> 1) & s_mask) | (sx & 1);
    1535       24814 :         uvsy    = ((motion_y >> 1) & s_mask) | (sy & 1);
    1536       24814 :         uvsrc_x = src_x >> 1;
    1537       24814 :         uvsrc_y = src_y >> 1;
    1538           0 :     } else if (s->out_format == FMT_H261) {
    1539             :         // even chroma mv's are full pel in H261
    1540           0 :         mx      = motion_x / 4;
    1541           0 :         my      = motion_y / 4;
    1542           0 :         uvsx    = (2 * mx) & s_mask;
    1543           0 :         uvsy    = (2 * my) & s_mask;
    1544           0 :         uvsrc_x = s->mb_x * block_s + (mx >> lowres);
    1545           0 :         uvsrc_y =    mb_y * block_s + (my >> lowres);
    1546             :     } else {
    1547           0 :         if(s->chroma_y_shift){
    1548           0 :             mx      = motion_x / 2;
    1549           0 :             my      = motion_y / 2;
    1550           0 :             uvsx    = mx & s_mask;
    1551           0 :             uvsy    = my & s_mask;
    1552           0 :             uvsrc_x = s->mb_x * block_s                 + (mx >> lowres + 1);
    1553           0 :             uvsrc_y =   (mb_y * block_s >> field_based) + (my >> lowres + 1);
    1554             :         } else {
    1555           0 :             if(s->chroma_x_shift){
    1556             :             //Chroma422
    1557           0 :                 mx = motion_x / 2;
    1558           0 :                 uvsx = mx & s_mask;
    1559           0 :                 uvsy = motion_y & s_mask;
    1560           0 :                 uvsrc_y = src_y;
    1561           0 :                 uvsrc_x = s->mb_x*block_s               + (mx >> (lowres+1));
    1562             :             } else {
    1563             :             //Chroma444
    1564           0 :                 uvsx = motion_x & s_mask;
    1565           0 :                 uvsy = motion_y & s_mask;
    1566           0 :                 uvsrc_x = src_x;
    1567           0 :                 uvsrc_y = src_y;
    1568             :             }
    1569             :         }
    1570             :     }
    1571             : 
    1572       24814 :     ptr_y  = ref_picture[0] + src_y   * linesize   + src_x;
    1573       24814 :     ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
    1574       24814 :     ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
    1575             : 
    1576       49526 :     if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s,       0) || uvsrc_y<0 ||
    1577       24712 :         (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
    1578         197 :         s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
    1579             :                                  linesize >> field_based, linesize >> field_based,
    1580             :                                  17, 17 + field_based,
    1581             :                                 src_x, src_y << field_based, h_edge_pos,
    1582             :                                 v_edge_pos);
    1583         197 :         ptr_y = s->sc.edge_emu_buffer;
    1584             :         if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
    1585         197 :             uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
    1586         197 :             uint8_t *vbuf =ubuf + 10 * s->uvlinesize;
    1587         197 :             if (s->workaround_bugs & FF_BUG_IEDGE)
    1588           0 :                 vbuf -= s->uvlinesize;
    1589         197 :             s->vdsp.emulated_edge_mc(ubuf,  ptr_cb,
    1590             :                                      uvlinesize >> field_based, uvlinesize >> field_based,
    1591             :                                      9, 9 + field_based,
    1592             :                                     uvsrc_x, uvsrc_y << field_based,
    1593             :                                     h_edge_pos >> 1, v_edge_pos >> 1);
    1594         197 :             s->vdsp.emulated_edge_mc(vbuf,  ptr_cr,
    1595             :                                      uvlinesize >> field_based,uvlinesize >> field_based,
    1596             :                                      9, 9 + field_based,
    1597             :                                     uvsrc_x, uvsrc_y << field_based,
    1598             :                                     h_edge_pos >> 1, v_edge_pos >> 1);
    1599         197 :             ptr_cb = ubuf;
    1600         197 :             ptr_cr = vbuf;
    1601             :         }
    1602             :     }
    1603             : 
    1604             :     // FIXME use this for field pix too instead of the obnoxious hack which changes picture.f->data
    1605       24814 :     if (bottom_field) {
    1606           0 :         dest_y  += s->linesize;
    1607           0 :         dest_cb += s->uvlinesize;
    1608           0 :         dest_cr += s->uvlinesize;
    1609             :     }
    1610             : 
    1611       24814 :     if (field_select) {
    1612           0 :         ptr_y   += s->linesize;
    1613           0 :         ptr_cb  += s->uvlinesize;
    1614           0 :         ptr_cr  += s->uvlinesize;
    1615             :     }
    1616             : 
    1617       24814 :     sx = (sx << 2) >> lowres;
    1618       24814 :     sy = (sy << 2) >> lowres;
    1619       24814 :     pix_op[lowres - 1](dest_y, ptr_y, linesize, h, sx, sy);
    1620             : 
    1621             :     if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
    1622       24814 :         int hc = s->chroma_y_shift ? (h+1-bottom_field)>>1 : h;
    1623       24814 :         uvsx = (uvsx << 2) >> lowres;
    1624       24814 :         uvsy = (uvsy << 2) >> lowres;
    1625       24814 :         if (hc) {
    1626       24814 :             pix_op[op_index](dest_cb, ptr_cb, uvlinesize, hc, uvsx, uvsy);
    1627       24814 :             pix_op[op_index](dest_cr, ptr_cr, uvlinesize, hc, uvsx, uvsy);
    1628             :         }
    1629             :     }
    1630             :     // FIXME h261 lowres loop filter
    1631       24814 : }
    1632             : 
    1633       31575 : static inline void chroma_4mv_motion_lowres(MpegEncContext *s,
    1634             :                                             uint8_t *dest_cb, uint8_t *dest_cr,
    1635             :                                             uint8_t **ref_picture,
    1636             :                                             h264_chroma_mc_func * pix_op,
    1637             :                                             int mx, int my)
    1638             : {
    1639       31575 :     const int lowres     = s->avctx->lowres;
    1640       31575 :     const int op_index   = FFMIN(lowres, 3);
    1641       31575 :     const int block_s    = 8 >> lowres;
    1642       31575 :     const int s_mask     = (2 << lowres) - 1;
    1643       31575 :     const int h_edge_pos = s->h_edge_pos >> lowres + 1;
    1644       31575 :     const int v_edge_pos = s->v_edge_pos >> lowres + 1;
    1645       31575 :     int emu = 0, src_x, src_y, sx, sy;
    1646             :     ptrdiff_t offset;
    1647             :     uint8_t *ptr;
    1648             : 
    1649       31575 :     if (s->quarter_sample) {
    1650           0 :         mx /= 2;
    1651           0 :         my /= 2;
    1652             :     }
    1653             : 
    1654             :     /* In case of 8X8, we construct a single chroma motion vector
    1655             :        with a special rounding */
    1656       31575 :     mx = ff_h263_round_chroma(mx);
    1657       31575 :     my = ff_h263_round_chroma(my);
    1658             : 
    1659       31575 :     sx = mx & s_mask;
    1660       31575 :     sy = my & s_mask;
    1661       31575 :     src_x = s->mb_x * block_s + (mx >> lowres + 1);
    1662       31575 :     src_y = s->mb_y * block_s + (my >> lowres + 1);
    1663             : 
    1664       31575 :     offset = src_y * s->uvlinesize + src_x;
    1665       31575 :     ptr = ref_picture[1] + offset;
    1666       63150 :     if ((unsigned) src_x > FFMAX(h_edge_pos - (!!sx) - block_s, 0) ||
    1667       31575 :         (unsigned) src_y > FFMAX(v_edge_pos - (!!sy) - block_s, 0)) {
    1668         144 :         s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
    1669             :                                  s->uvlinesize, s->uvlinesize,
    1670             :                                  9, 9,
    1671             :                                  src_x, src_y, h_edge_pos, v_edge_pos);
    1672         144 :         ptr = s->sc.edge_emu_buffer;
    1673         144 :         emu = 1;
    1674             :     }
    1675       31575 :     sx = (sx << 2) >> lowres;
    1676       31575 :     sy = (sy << 2) >> lowres;
    1677       31575 :     pix_op[op_index](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
    1678             : 
    1679       31575 :     ptr = ref_picture[2] + offset;
    1680       31575 :     if (emu) {
    1681         144 :         s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
    1682             :                                  s->uvlinesize, s->uvlinesize,
    1683             :                                  9, 9,
    1684             :                                  src_x, src_y, h_edge_pos, v_edge_pos);
    1685         144 :         ptr = s->sc.edge_emu_buffer;
    1686             :     }
    1687       31575 :     pix_op[op_index](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
    1688       31575 : }
    1689             : 
    1690             : /**
    1691             :  * motion compensation of a single macroblock
    1692             :  * @param s context
    1693             :  * @param dest_y luma destination pointer
    1694             :  * @param dest_cb chroma cb/u destination pointer
    1695             :  * @param dest_cr chroma cr/v destination pointer
    1696             :  * @param dir direction (0->forward, 1->backward)
    1697             :  * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
    1698             :  * @param pix_op halfpel motion compensation function (average or put normally)
    1699             :  * the motion vectors are taken from s->mv and the MV type from s->mv_type
    1700             :  */
    1701       56389 : static inline void MPV_motion_lowres(MpegEncContext *s,
    1702             :                                      uint8_t *dest_y, uint8_t *dest_cb,
    1703             :                                      uint8_t *dest_cr,
    1704             :                                      int dir, uint8_t **ref_picture,
    1705             :                                      h264_chroma_mc_func *pix_op)
    1706             : {
    1707             :     int mx, my;
    1708             :     int mb_x, mb_y, i;
    1709       56389 :     const int lowres  = s->avctx->lowres;
    1710       56389 :     const int block_s = 8 >>lowres;
    1711             : 
    1712       56389 :     mb_x = s->mb_x;
    1713       56389 :     mb_y = s->mb_y;
    1714             : 
    1715       56389 :     switch (s->mv_type) {
    1716       24814 :     case MV_TYPE_16X16:
    1717       24814 :         mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
    1718             :                            0, 0, 0,
    1719             :                            ref_picture, pix_op,
    1720             :                            s->mv[dir][0][0], s->mv[dir][0][1],
    1721             :                            2 * block_s, mb_y);
    1722       24814 :         break;
    1723       31575 :     case MV_TYPE_8X8:
    1724       31575 :         mx = 0;
    1725       31575 :         my = 0;
    1726      157875 :         for (i = 0; i < 4; i++) {
    1727      884100 :             hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) *
    1728      252600 :                                s->linesize) * block_s,
    1729             :                                ref_picture[0], 0, 0,
    1730      126300 :                                (2 * mb_x + (i & 1)) * block_s,
    1731      126300 :                                (2 * mb_y + (i >> 1)) * block_s,
    1732             :                                s->width, s->height, s->linesize,
    1733      252600 :                                s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
    1734             :                                block_s, block_s, pix_op,
    1735             :                                s->mv[dir][i][0], s->mv[dir][i][1]);
    1736             : 
    1737      126300 :             mx += s->mv[dir][i][0];
    1738      126300 :             my += s->mv[dir][i][1];
    1739             :         }
    1740             : 
    1741             :         if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))
    1742       31575 :             chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture,
    1743             :                                      pix_op, mx, my);
    1744       31575 :         break;
    1745           0 :     case MV_TYPE_FIELD:
    1746           0 :         if (s->picture_structure == PICT_FRAME) {
    1747             :             /* top field */
    1748           0 :             mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
    1749             :                                1, 0, s->field_select[dir][0],
    1750             :                                ref_picture, pix_op,
    1751             :                                s->mv[dir][0][0], s->mv[dir][0][1],
    1752             :                                block_s, mb_y);
    1753             :             /* bottom field */
    1754           0 :             mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
    1755             :                                1, 1, s->field_select[dir][1],
    1756             :                                ref_picture, pix_op,
    1757             :                                s->mv[dir][1][0], s->mv[dir][1][1],
    1758             :                                block_s, mb_y);
    1759             :         } else {
    1760           0 :             if (s->picture_structure != s->field_select[dir][0] + 1 &&
    1761           0 :                 s->pict_type != AV_PICTURE_TYPE_B && !s->first_field) {
    1762           0 :                 ref_picture = s->current_picture_ptr->f->data;
    1763             : 
    1764             :             }
    1765           0 :             mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
    1766             :                                0, 0, s->field_select[dir][0],
    1767             :                                ref_picture, pix_op,
    1768             :                                s->mv[dir][0][0],
    1769             :                                s->mv[dir][0][1], 2 * block_s, mb_y >> 1);
    1770             :             }
    1771           0 :         break;
    1772           0 :     case MV_TYPE_16X8:
    1773           0 :         for (i = 0; i < 2; i++) {
    1774             :             uint8_t **ref2picture;
    1775             : 
    1776           0 :             if (s->picture_structure == s->field_select[dir][i] + 1 ||
    1777           0 :                 s->pict_type == AV_PICTURE_TYPE_B || s->first_field) {
    1778           0 :                 ref2picture = ref_picture;
    1779             :             } else {
    1780           0 :                 ref2picture = s->current_picture_ptr->f->data;
    1781             :             }
    1782             : 
    1783           0 :             mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
    1784             :                                0, 0, s->field_select[dir][i],
    1785             :                                ref2picture, pix_op,
    1786           0 :                                s->mv[dir][i][0], s->mv[dir][i][1] +
    1787           0 :                                2 * block_s * i, block_s, mb_y >> 1);
    1788             : 
    1789           0 :             dest_y  +=  2 * block_s *  s->linesize;
    1790           0 :             dest_cb += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
    1791           0 :             dest_cr += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
    1792             :         }
    1793           0 :         break;
    1794           0 :     case MV_TYPE_DMV:
    1795           0 :         if (s->picture_structure == PICT_FRAME) {
    1796           0 :             for (i = 0; i < 2; i++) {
    1797             :                 int j;
    1798           0 :                 for (j = 0; j < 2; j++) {
    1799           0 :                     mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
    1800             :                                        1, j, j ^ i,
    1801             :                                        ref_picture, pix_op,
    1802           0 :                                        s->mv[dir][2 * i + j][0],
    1803           0 :                                        s->mv[dir][2 * i + j][1],
    1804             :                                        block_s, mb_y);
    1805             :                 }
    1806           0 :                 pix_op = s->h264chroma.avg_h264_chroma_pixels_tab;
    1807             :             }
    1808             :         } else {
    1809           0 :             for (i = 0; i < 2; i++) {
    1810           0 :                 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
    1811           0 :                                    0, 0, s->picture_structure != i + 1,
    1812             :                                    ref_picture, pix_op,
    1813           0 :                                    s->mv[dir][2 * i][0],s->mv[dir][2 * i][1],
    1814             :                                    2 * block_s, mb_y >> 1);
    1815             : 
    1816             :                 // after put we make avg of the same block
    1817           0 :                 pix_op = s->h264chroma.avg_h264_chroma_pixels_tab;
    1818             : 
    1819             :                 // opposite parity is always in the same
    1820             :                 // frame if this is second field
    1821           0 :                 if (!s->first_field) {
    1822           0 :                     ref_picture = s->current_picture_ptr->f->data;
    1823             :                 }
    1824             :             }
    1825             :         }
    1826           0 :         break;
    1827       56389 :     default:
    1828             :         av_assert2(0);
    1829             :     }
    1830       56389 : }
    1831             : 
    1832             : /**
    1833             :  * find the lowest MB row referenced in the MVs
    1834             :  */
    1835           0 : static int lowest_referenced_row(MpegEncContext *s, int dir)
    1836             : {
    1837           0 :     int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
    1838             :     int my, off, i, mvs;
    1839             : 
    1840           0 :     if (s->picture_structure != PICT_FRAME || s->mcsel)
    1841             :         goto unhandled;
    1842             : 
    1843           0 :     switch (s->mv_type) {
    1844           0 :         case MV_TYPE_16X16:
    1845           0 :             mvs = 1;
    1846           0 :             break;
    1847           0 :         case MV_TYPE_16X8:
    1848           0 :             mvs = 2;
    1849           0 :             break;
    1850           0 :         case MV_TYPE_8X8:
    1851           0 :             mvs = 4;
    1852           0 :             break;
    1853           0 :         default:
    1854           0 :             goto unhandled;
    1855             :     }
    1856             : 
    1857           0 :     for (i = 0; i < mvs; i++) {
    1858           0 :         my = s->mv[dir][i][1];
    1859           0 :         my_max = FFMAX(my_max, my);
    1860           0 :         my_min = FFMIN(my_min, my);
    1861             :     }
    1862             : 
    1863           0 :     off = ((FFMAX(-my_min, my_max)<<qpel_shift) + 63) >> 6;
    1864             : 
    1865           0 :     return av_clip(s->mb_y + off, 0, s->mb_height - 1);
    1866           0 : unhandled:
    1867           0 :     return s->mb_height-1;
    1868             : }
    1869             : 
    1870             : /* put block[] to dest[] */
    1871     4698878 : static inline void put_dct(MpegEncContext *s,
    1872             :                            int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
    1873             : {
    1874     4698878 :     s->dct_unquantize_intra(s, block, i, qscale);
    1875     4698878 :     s->idsp.idct_put(dest, line_size, block);
    1876     4698878 : }
    1877             : 
    1878             : /* add block[] to dest[] */
    1879    19366082 : static inline void add_dct(MpegEncContext *s,
    1880             :                            int16_t *block, int i, uint8_t *dest, int line_size)
    1881             : {
    1882    19366082 :     if (s->block_last_index[i] >= 0) {
    1883     7046442 :         s->idsp.idct_add(dest, line_size, block);
    1884             :     }
    1885    19366082 : }
    1886             : 
    1887    21854390 : static inline void add_dequant_dct(MpegEncContext *s,
    1888             :                            int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
    1889             : {
    1890    21854390 :     if (s->block_last_index[i] >= 0) {
    1891     9051961 :         s->dct_unquantize_inter(s, block, i, qscale);
    1892             : 
    1893     9051961 :         s->idsp.idct_add(dest, line_size, block);
    1894             :     }
    1895    21854390 : }
    1896             : 
    1897             : /**
    1898             :  * Clean dc, ac, coded_block for the current non-intra MB.
    1899             :  */
    1900      383901 : void ff_clean_intra_table_entries(MpegEncContext *s)
    1901             : {
    1902      383901 :     int wrap = s->b8_stride;
    1903      383901 :     int xy = s->block_index[0];
    1904             : 
    1905      767802 :     s->dc_val[0][xy           ] =
    1906     1151703 :     s->dc_val[0][xy + 1       ] =
    1907     1151703 :     s->dc_val[0][xy     + wrap] =
    1908      767802 :     s->dc_val[0][xy + 1 + wrap] = 1024;
    1909             :     /* ac pred */
    1910      383901 :     memset(s->ac_val[0][xy       ], 0, 32 * sizeof(int16_t));
    1911      383901 :     memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
    1912      383901 :     if (s->msmpeg4_version>=3) {
    1913       91402 :         s->coded_block[xy           ] =
    1914      137103 :         s->coded_block[xy + 1       ] =
    1915      137103 :         s->coded_block[xy     + wrap] =
    1916       91402 :         s->coded_block[xy + 1 + wrap] = 0;
    1917             :     }
    1918             :     /* chroma */
    1919      383901 :     wrap = s->mb_stride;
    1920      383901 :     xy = s->mb_x + s->mb_y * wrap;
    1921      767802 :     s->dc_val[1][xy] =
    1922      767802 :     s->dc_val[2][xy] = 1024;
    1923             :     /* ac pred */
    1924      383901 :     memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
    1925      383901 :     memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
    1926             : 
    1927      383901 :     s->mbintra_table[xy]= 0;
    1928      383901 : }
    1929             : 
    1930             : /* generic function called after a macroblock has been parsed by the
    1931             :    decoder or after it has been encoded by the encoder.
    1932             : 
    1933             :    Important variables used:
    1934             :    s->mb_intra : true if intra macroblock
    1935             :    s->mv_dir   : motion vector direction
    1936             :    s->mv_type  : motion vector type
    1937             :    s->mv       : motion vector
    1938             :    s->interlaced_dct : true if interlaced dct used (mpeg2)
    1939             :  */
    1940             : static av_always_inline
    1941     8873167 : void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
    1942             :                             int lowres_flag, int is_mpeg12)
    1943             : {
    1944     8873167 :     const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
    1945             : 
    1946             :     if (CONFIG_XVMC &&
    1947             :         s->avctx->hwaccel && s->avctx->hwaccel->decode_mb) {
    1948             :         s->avctx->hwaccel->decode_mb(s);//xvmc uses pblocks
    1949             :         return;
    1950             :     }
    1951             : 
    1952     8873167 :     if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
    1953             :        /* print DCT coefficients */
    1954             :        int i,j;
    1955           0 :        av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
    1956           0 :        for(i=0; i<6; i++){
    1957           0 :            for(j=0; j<64; j++){
    1958           0 :                av_log(s->avctx, AV_LOG_DEBUG, "%5d",
    1959           0 :                       block[i][s->idsp.idct_permutation[j]]);
    1960             :            }
    1961           0 :            av_log(s->avctx, AV_LOG_DEBUG, "\n");
    1962             :        }
    1963             :     }
    1964             : 
    1965     8873167 :     s->current_picture.qscale_table[mb_xy] = s->qscale;
    1966             : 
    1967             :     /* update DC predictors for P macroblocks */
    1968     8873167 :     if (!s->mb_intra) {
    1969     7138622 :         if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) {
    1970     6659948 :             if(s->mbintra_table[mb_xy])
    1971      306277 :                 ff_clean_intra_table_entries(s);
    1972             :         } else {
    1973     3808648 :             s->last_dc[0] =
    1974     3808648 :             s->last_dc[1] =
    1975     3808648 :             s->last_dc[2] = 128 << s->intra_dc_precision;
    1976             :         }
    1977             :     }
    1978     1734545 :     else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
    1979      452318 :         s->mbintra_table[mb_xy]=1;
    1980             : 
    1981    17746334 :     if ((s->avctx->flags & AV_CODEC_FLAG_PSNR) || s->frame_skip_threshold || s->frame_skip_factor ||
    1982    15128257 :         !(s->encoding && (s->intra_only || s->pict_type == AV_PICTURE_TYPE_B) &&
    1983     1926989 :           s->avctx->mb_decision != FF_MB_DECISION_RD)) { // FIXME precalc
    1984             :         uint8_t *dest_y, *dest_cb, *dest_cr;
    1985             :         int dct_linesize, dct_offset;
    1986             :         op_pixels_func (*op_pix)[4];
    1987             :         qpel_mc_func (*op_qpix)[16];
    1988     7965973 :         const int linesize   = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
    1989     7965973 :         const int uvlinesize = s->current_picture.f->linesize[1];
    1990     7965973 :         const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
    1991     7965973 :         const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
    1992             : 
    1993             :         /* avoid copy if macroblock skipped in last frame too */
    1994             :         /* skip only during decoding as we might trash the buffers during encoding a bit */
    1995     7965973 :         if(!s->encoding){
    1996     4545066 :             uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
    1997             : 
    1998     4545066 :             if (s->mb_skipped) {
    1999      322949 :                 s->mb_skipped= 0;
    2000             :                 av_assert2(s->pict_type!=AV_PICTURE_TYPE_I);
    2001      322949 :                 *mbskip_ptr = 1;
    2002     4222117 :             } else if(!s->current_picture.reference) {
    2003      886263 :                 *mbskip_ptr = 1;
    2004             :             } else{
    2005     3335854 :                 *mbskip_ptr = 0; /* not skipped */
    2006             :             }
    2007             :         }
    2008             : 
    2009     7965973 :         dct_linesize = linesize << s->interlaced_dct;
    2010     7965973 :         dct_offset   = s->interlaced_dct ? linesize : linesize * block_size;
    2011             : 
    2012     7965973 :         if(readable){
    2013     6995046 :             dest_y=  s->dest[0];
    2014     6995046 :             dest_cb= s->dest[1];
    2015     6995046 :             dest_cr= s->dest[2];
    2016             :         }else{
    2017      970927 :             dest_y = s->sc.b_scratchpad;
    2018      970927 :             dest_cb= s->sc.b_scratchpad+16*linesize;
    2019      970927 :             dest_cr= s->sc.b_scratchpad+32*linesize;
    2020             :         }
    2021             : 
    2022     7965973 :         if (!s->mb_intra) {
    2023             :             /* motion handling */
    2024             :             /* decoding or more than one mb_type (MC was already done otherwise) */
    2025     6921926 :             if(!s->encoding){
    2026             : 
    2027     3968960 :                 if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
    2028           0 :                     if (s->mv_dir & MV_DIR_FORWARD) {
    2029           0 :                         ff_thread_await_progress(&s->last_picture_ptr->tf,
    2030             :                                                  lowest_referenced_row(s, 0),
    2031             :                                                  0);
    2032             :                     }
    2033           0 :                     if (s->mv_dir & MV_DIR_BACKWARD) {
    2034           0 :                         ff_thread_await_progress(&s->next_picture_ptr->tf,
    2035             :                                                  lowest_referenced_row(s, 1),
    2036             :                                                  0);
    2037             :                     }
    2038             :                 }
    2039             : 
    2040     3968960 :                 if(lowres_flag){
    2041       41123 :                     h264_chroma_mc_func *op_pix = s->h264chroma.put_h264_chroma_pixels_tab;
    2042             : 
    2043       41123 :                     if (s->mv_dir & MV_DIR_FORWARD) {
    2044       37429 :                         MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix);
    2045       37429 :                         op_pix = s->h264chroma.avg_h264_chroma_pixels_tab;
    2046             :                     }
    2047       41123 :                     if (s->mv_dir & MV_DIR_BACKWARD) {
    2048       18960 :                         MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix);
    2049             :                     }
    2050             :                 }else{
    2051     3927837 :                     op_qpix = s->me.qpel_put;
    2052     3927837 :                     if ((!s->no_rounding) || s->pict_type==AV_PICTURE_TYPE_B){
    2053     3168898 :                         op_pix = s->hdsp.put_pixels_tab;
    2054             :                     }else{
    2055      758939 :                         op_pix = s->hdsp.put_no_rnd_pixels_tab;
    2056             :                     }
    2057     3927837 :                     if (s->mv_dir & MV_DIR_FORWARD) {
    2058     3697244 :                         ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix, op_qpix);
    2059     3697244 :                         op_pix = s->hdsp.avg_pixels_tab;
    2060     3697244 :                         op_qpix= s->me.qpel_avg;
    2061             :                     }
    2062     3927837 :                     if (s->mv_dir & MV_DIR_BACKWARD) {
    2063      754504 :                         ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix, op_qpix);
    2064             :                     }
    2065             :                 }
    2066             :             }
    2067             : 
    2068             :             /* skip dequant / idct if we are really late ;) */
    2069     6921926 :             if(s->avctx->skip_idct){
    2070           0 :                 if(  (s->avctx->skip_idct >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B)
    2071           0 :                    ||(s->avctx->skip_idct >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I)
    2072           0 :                    || s->avctx->skip_idct >= AVDISCARD_ALL)
    2073             :                     goto skip_idct;
    2074             :             }
    2075             : 
    2076             :             /* add dct residue */
    2077     8736768 :             if(s->encoding || !(   s->msmpeg4_version || s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO
    2078     3117654 :                                 || (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){
    2079     3526530 :                 add_dequant_dct(s, block[0], 0, dest_y                          , dct_linesize, s->qscale);
    2080     3526530 :                 add_dequant_dct(s, block[1], 1, dest_y              + block_size, dct_linesize, s->qscale);
    2081     3526530 :                 add_dequant_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize, s->qscale);
    2082     3526530 :                 add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
    2083             : 
    2084     3526530 :                 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
    2085     3526530 :                     if (s->chroma_y_shift){
    2086     3178925 :                         add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
    2087     3178925 :                         add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
    2088             :                     }else{
    2089      347605 :                         dct_linesize >>= 1;
    2090      347605 :                         dct_offset >>=1;
    2091      347605 :                         add_dequant_dct(s, block[4], 4, dest_cb,              dct_linesize, s->chroma_qscale);
    2092      347605 :                         add_dequant_dct(s, block[5], 5, dest_cr,              dct_linesize, s->chroma_qscale);
    2093      347605 :                         add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
    2094      347605 :                         add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
    2095             :                     }
    2096             :                 }
    2097     3395396 :             } else if(is_mpeg12 || (s->codec_id != AV_CODEC_ID_WMV2)){
    2098     3205247 :                 add_dct(s, block[0], 0, dest_y                          , dct_linesize);
    2099     3205247 :                 add_dct(s, block[1], 1, dest_y              + block_size, dct_linesize);
    2100     3205247 :                 add_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize);
    2101     3205247 :                 add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
    2102             : 
    2103     3205247 :                 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
    2104     3205247 :                     if(s->chroma_y_shift){//Chroma420
    2105     3137947 :                         add_dct(s, block[4], 4, dest_cb, uvlinesize);
    2106     3137947 :                         add_dct(s, block[5], 5, dest_cr, uvlinesize);
    2107             :                     }else{
    2108             :                         //chroma422
    2109       67300 :                         dct_linesize = uvlinesize << s->interlaced_dct;
    2110       67300 :                         dct_offset   = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
    2111             : 
    2112       67300 :                         add_dct(s, block[4], 4, dest_cb, dct_linesize);
    2113       67300 :                         add_dct(s, block[5], 5, dest_cr, dct_linesize);
    2114       67300 :                         add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
    2115       67300 :                         add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
    2116       67300 :                         if(!s->chroma_x_shift){//Chroma444
    2117           0 :                             add_dct(s, block[8], 8, dest_cb+block_size, dct_linesize);
    2118           0 :                             add_dct(s, block[9], 9, dest_cr+block_size, dct_linesize);
    2119           0 :                             add_dct(s, block[10], 10, dest_cb+block_size+dct_offset, dct_linesize);
    2120           0 :                             add_dct(s, block[11], 11, dest_cr+block_size+dct_offset, dct_linesize);
    2121             :                         }
    2122             :                     }
    2123             :                 }//fi gray
    2124             :             }
    2125             :             else if (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) {
    2126      190149 :                 ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
    2127             :             }
    2128             :         } else {
    2129             :             /* Only MPEG-4 Simple Studio Profile is supported in > 8-bit mode.
    2130             :                TODO: Integrate 10-bit properly into mpegvideo.c so that ER works properly */
    2131     1044047 :             if (s->avctx->bits_per_raw_sample > 8){
    2132           0 :                 const int act_block_size = block_size * 2;
    2133           0 :                 s->idsp.idct_put(dest_y,                           dct_linesize, (int16_t*)(*s->block32)[0]);
    2134           0 :                 s->idsp.idct_put(dest_y              + act_block_size, dct_linesize, (int16_t*)(*s->block32)[1]);
    2135           0 :                 s->idsp.idct_put(dest_y + dct_offset,              dct_linesize, (int16_t*)(*s->block32)[2]);
    2136           0 :                 s->idsp.idct_put(dest_y + dct_offset + act_block_size, dct_linesize, (int16_t*)(*s->block32)[3]);
    2137             : 
    2138           0 :                 dct_linesize = uvlinesize << s->interlaced_dct;
    2139           0 :                 dct_offset   = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
    2140             : 
    2141           0 :                 s->idsp.idct_put(dest_cb,              dct_linesize, (int16_t*)(*s->block32)[4]);
    2142           0 :                 s->idsp.idct_put(dest_cr,              dct_linesize, (int16_t*)(*s->block32)[5]);
    2143           0 :                 s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, (int16_t*)(*s->block32)[6]);
    2144           0 :                 s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, (int16_t*)(*s->block32)[7]);
    2145           0 :                 if(!s->chroma_x_shift){//Chroma444
    2146           0 :                     s->idsp.idct_put(dest_cb + act_block_size,              dct_linesize, (int16_t*)(*s->block32)[8]);
    2147           0 :                     s->idsp.idct_put(dest_cr + act_block_size,              dct_linesize, (int16_t*)(*s->block32)[9]);
    2148           0 :                     s->idsp.idct_put(dest_cb + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[10]);
    2149           0 :                     s->idsp.idct_put(dest_cr + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[11]);
    2150             :                 }
    2151             :             }
    2152             :             /* dct only in intra block */
    2153     1044047 :             else if(s->encoding || !(s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO)){
    2154      770143 :                 put_dct(s, block[0], 0, dest_y                          , dct_linesize, s->qscale);
    2155      770143 :                 put_dct(s, block[1], 1, dest_y              + block_size, dct_linesize, s->qscale);
    2156      770143 :                 put_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize, s->qscale);
    2157      770143 :                 put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
    2158             : 
    2159      770143 :                 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
    2160      770143 :                     if(s->chroma_y_shift){
    2161      731133 :                         put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
    2162      731133 :                         put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
    2163             :                     }else{
    2164       39010 :                         dct_offset >>=1;
    2165       39010 :                         dct_linesize >>=1;
    2166       39010 :                         put_dct(s, block[4], 4, dest_cb,              dct_linesize, s->chroma_qscale);
    2167       39010 :                         put_dct(s, block[5], 5, dest_cr,              dct_linesize, s->chroma_qscale);
    2168       39010 :                         put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
    2169       39010 :                         put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
    2170             :                     }
    2171             :                 }
    2172             :             }else{
    2173      273904 :                 s->idsp.idct_put(dest_y,                           dct_linesize, block[0]);
    2174      273904 :                 s->idsp.idct_put(dest_y              + block_size, dct_linesize, block[1]);
    2175      273904 :                 s->idsp.idct_put(dest_y + dct_offset,              dct_linesize, block[2]);
    2176      273904 :                 s->idsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
    2177             : 
    2178             :                 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
    2179      273904 :                     if(s->chroma_y_shift){
    2180      220094 :                         s->idsp.idct_put(dest_cb, uvlinesize, block[4]);
    2181      220094 :                         s->idsp.idct_put(dest_cr, uvlinesize, block[5]);
    2182             :                     }else{
    2183             : 
    2184       53810 :                         dct_linesize = uvlinesize << s->interlaced_dct;
    2185       53810 :                         dct_offset   = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
    2186             : 
    2187       53810 :                         s->idsp.idct_put(dest_cb,              dct_linesize, block[4]);
    2188       53810 :                         s->idsp.idct_put(dest_cr,              dct_linesize, block[5]);
    2189       53810 :                         s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
    2190       53810 :                         s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
    2191       53810 :                         if(!s->chroma_x_shift){//Chroma444
    2192           0 :                             s->idsp.idct_put(dest_cb + block_size,              dct_linesize, block[8]);
    2193           0 :                             s->idsp.idct_put(dest_cr + block_size,              dct_linesize, block[9]);
    2194           0 :                             s->idsp.idct_put(dest_cb + block_size + dct_offset, dct_linesize, block[10]);
    2195           0 :                             s->idsp.idct_put(dest_cr + block_size + dct_offset, dct_linesize, block[11]);
    2196             :                         }
    2197             :                     }
    2198             :                 }//gray
    2199             :             }
    2200             :         }
    2201     8019783 : skip_idct:
    2202     7965973 :         if(!readable){
    2203      970927 :             s->hdsp.put_pixels_tab[0][0](s->dest[0], dest_y ,   linesize,16);
    2204             :             if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
    2205      970927 :                 s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
    2206      970927 :                 s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
    2207             :             }
    2208             :         }
    2209             :     }
    2210             : }
    2211             : 
    2212     8873167 : void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
    2213             : {
    2214             : #if !CONFIG_SMALL
    2215     8873167 :     if(s->out_format == FMT_MPEG1) {
    2216     3627291 :         if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 1);
    2217     3627291 :         else                 mpv_reconstruct_mb_internal(s, block, 0, 1);
    2218             :     } else
    2219             : #endif
    2220     5245876 :     if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 0);
    2221     5202376 :     else                  mpv_reconstruct_mb_internal(s, block, 0, 0);
    2222     8873167 : }
    2223             : 
    2224      165140 : void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
    2225             : {
    2226      491110 :     ff_draw_horiz_band(s->avctx, s->current_picture_ptr->f,
    2227      325970 :                        s->last_picture_ptr ? s->last_picture_ptr->f : NULL, y, h, s->picture_structure,
    2228             :                        s->first_field, s->low_delay);
    2229      165140 : }
    2230             : 
    2231      835212 : void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
    2232      835212 :     const int linesize   = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
    2233      835212 :     const int uvlinesize = s->current_picture.f->linesize[1];
    2234      835212 :     const int width_of_mb = (4 + (s->avctx->bits_per_raw_sample > 8)) - s->avctx->lowres;
    2235      835212 :     const int height_of_mb = 4 - s->avctx->lowres;
    2236             : 
    2237      835212 :     s->block_index[0]= s->b8_stride*(s->mb_y*2    ) - 2 + s->mb_x*2;
    2238      835212 :     s->block_index[1]= s->b8_stride*(s->mb_y*2    ) - 1 + s->mb_x*2;
    2239      835212 :     s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
    2240      835212 :     s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
    2241      835212 :     s->block_index[4]= s->mb_stride*(s->mb_y + 1)                + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
    2242      835212 :     s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
    2243             :     //block_index is not used by mpeg2, so it is not affected by chroma_format
    2244             : 
    2245      835212 :     s->dest[0] = s->current_picture.f->data[0] + (int)((s->mb_x - 1U) <<  width_of_mb);
    2246      835212 :     s->dest[1] = s->current_picture.f->data[1] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift));
    2247      835212 :     s->dest[2] = s->current_picture.f->data[2] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift));
    2248             : 
    2249      835212 :     if(!(s->pict_type==AV_PICTURE_TYPE_B && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME))
    2250             :     {
    2251      835212 :         if(s->picture_structure==PICT_FRAME){
    2252      804432 :         s->dest[0] += s->mb_y *   linesize << height_of_mb;
    2253      804432 :         s->dest[1] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift);
    2254      804432 :         s->dest[2] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift);
    2255             :         }else{
    2256       30780 :             s->dest[0] += (s->mb_y>>1) *   linesize << height_of_mb;
    2257       30780 :             s->dest[1] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift);
    2258       30780 :             s->dest[2] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift);
    2259             :             av_assert1((s->mb_y&1) == (s->picture_structure == PICT_BOTTOM_FIELD));
    2260             :         }
    2261             :     }
    2262      835212 : }
    2263             : 
    2264          79 : void ff_mpeg_flush(AVCodecContext *avctx){
    2265             :     int i;
    2266          79 :     MpegEncContext *s = avctx->priv_data;
    2267             : 
    2268          79 :     if (!s || !s->picture)
    2269           0 :         return;
    2270             : 
    2271        2923 :     for (i = 0; i < MAX_PICTURE_COUNT; i++)
    2272        2844 :         ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
    2273          79 :     s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
    2274             : 
    2275          79 :     ff_mpeg_unref_picture(s->avctx, &s->current_picture);
    2276          79 :     ff_mpeg_unref_picture(s->avctx, &s->last_picture);
    2277          79 :     ff_mpeg_unref_picture(s->avctx, &s->next_picture);
    2278             : 
    2279          79 :     s->mb_x= s->mb_y= 0;
    2280          79 :     s->closed_gop= 0;
    2281             : 
    2282          79 :     s->parse_context.state= -1;
    2283          79 :     s->parse_context.frame_start_found= 0;
    2284          79 :     s->parse_context.overread= 0;
    2285          79 :     s->parse_context.overread_index= 0;
    2286          79 :     s->parse_context.index= 0;
    2287          79 :     s->parse_context.last_index= 0;
    2288          79 :     s->bitstream_buffer_size=0;
    2289          79 :     s->pp_time=0;
    2290             : }
    2291             : 
    2292             : /**
    2293             :  * set qscale and update qscale dependent variables.
    2294             :  */
    2295     1444180 : void ff_set_qscale(MpegEncContext * s, int qscale)
    2296             : {
    2297     1444180 :     if (qscale < 1)
    2298           0 :         qscale = 1;
    2299     1444180 :     else if (qscale > 31)
    2300           0 :         qscale = 31;
    2301             : 
    2302     1444180 :     s->qscale = qscale;
    2303     1444180 :     s->chroma_qscale= s->chroma_qscale_table[qscale];
    2304             : 
    2305     1444180 :     s->y_dc_scale= s->y_dc_scale_table[ qscale ];
    2306     1444180 :     s->c_dc_scale= s->c_dc_scale_table[ s->chroma_qscale ];
    2307     1444180 : }
    2308             : 
    2309      156992 : void ff_mpv_report_decode_progress(MpegEncContext *s)
    2310             : {
    2311      156992 :     if (s->pict_type != AV_PICTURE_TYPE_B && !s->partitioned_frame && !s->er.error_occurred)
    2312      116532 :         ff_thread_report_progress(&s->current_picture_ptr->tf, s->mb_y, 0);
    2313      156992 : }

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