]> git.sesse.net Git - ffmpeg/blobdiff - libavcodec/mpegvideo.c
minor optimizations
[ffmpeg] / libavcodec / mpegvideo.c
index 73daa0d32392cfac1d5a78c7a1ee38f591edf80e..0cbe85934ae7441dd44ed01b76e87705f36029e8 100644 (file)
@@ -1,27 +1,23 @@
 /*
  * The simplest mpeg encoder (well, it was the simplest!)
- * Copyright (c) 2000,2001 Gerard Lantau.
+ * Copyright (c) 2000,2001 Fabrice Bellard.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
  * 4MV & hq & b-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
  */
-#include <stdlib.h>
-#include <stdio.h>
-#include <math.h>
-#include <string.h>
 #include "avcodec.h"
 #include "dsputil.h"
 #include "mpegvideo.h"
@@ -42,6 +38,8 @@ static int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale,
 
 int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow)= dct_quantize_c;
 void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w)= draw_edges_c;
+static void emulated_edge_mc(MpegEncContext *s, UINT8 *src, int linesize, int block_w, int block_h, 
+                                    int src_x, int src_y, int w, int h);
 
 #define EDGE_WIDTH 16
 
@@ -85,7 +83,7 @@ static void convert_matrix(int (*qmat)[64], uint16_t (*qmat16)[64], uint16_t (*q
 
     for(qscale=1; qscale<32; qscale++){
         int i;
-        if (av_fdct == jpeg_fdct_ifast) {
+        if (av_fdct == fdct_ifast) {
             for(i=0;i<64;i++) {
                 const int j= block_permute_op(i);
                 /* 16 <= qscale * quant_matrix[i] <= 7905 */
@@ -113,6 +111,15 @@ static void convert_matrix(int (*qmat)[64], uint16_t (*qmat16)[64], uint16_t (*q
         }
     }
 }
+// move into common.c perhaps 
+#define CHECKED_ALLOCZ(p, size)\
+{\
+    p= av_mallocz(size);\
+    if(p==NULL){\
+        perror("malloc");\
+        goto fail;\
+    }\
+}
 
 /* init common structure for both encoder and decoder */
 int MPV_common_init(MpegEncContext *s)
@@ -126,6 +133,9 @@ int MPV_common_init(MpegEncContext *s)
         
 #ifdef HAVE_MMX
     MPV_common_init_mmx(s);
+#endif
+#ifdef ARCH_ALPHA
+    MPV_common_init_axp(s);
 #endif
     //setup default unquantizers (mpeg4 might change it later)
     if(s->out_format == FMT_H263)
@@ -136,109 +146,64 @@ int MPV_common_init(MpegEncContext *s)
     s->mb_width = (s->width + 15) / 16;
     s->mb_height = (s->height + 15) / 16;
     s->mb_num = s->mb_width * s->mb_height;
-    s->linesize = s->mb_width * 16 + 2 * EDGE_WIDTH;
+    if(!(s->flags&CODEC_FLAG_DR1)){
+      s->linesize   = s->mb_width * 16 + 2 * EDGE_WIDTH;
+      s->uvlinesize = s->mb_width * 8  +     EDGE_WIDTH;
 
-    for(i=0;i<3;i++) {
+      for(i=0;i<3;i++) {
         int w, h, shift, pict_start;
 
         w = s->linesize;
         h = s->mb_height * 16 + 2 * EDGE_WIDTH;
         shift = (i == 0) ? 0 : 1;
-        c_size = (w >> shift) * (h >> shift);
-        pict_start = (w >> shift) * (EDGE_WIDTH >> shift) + (EDGE_WIDTH >> shift);
+        c_size = (s->linesize>>shift) * (h >> shift);
+        pict_start = (s->linesize>>shift) * (EDGE_WIDTH >> shift) + (EDGE_WIDTH >> shift);
 
-        pict = av_mallocz(c_size);
-        if (pict == NULL)
-            goto fail;
+        CHECKED_ALLOCZ(pict, c_size)
         s->last_picture_base[i] = pict;
         s->last_picture[i] = pict + pict_start;
+        if(i>0) memset(s->last_picture_base[i], 128, c_size);
     
-        pict = av_mallocz(c_size);
-        if (pict == NULL)
-            goto fail;
+        CHECKED_ALLOCZ(pict, c_size)
         s->next_picture_base[i] = pict;
         s->next_picture[i] = pict + pict_start;
+        if(i>0) memset(s->next_picture_base[i], 128, c_size);
         
         if (s->has_b_frames || s->codec_id==CODEC_ID_MPEG4) {
         /* Note the MPEG4 stuff is here cuz of buggy encoders which dont set the low_delay flag but 
            do low-delay encoding, so we cant allways distinguish b-frame containing streams from low_delay streams */
-            pict = av_mallocz(c_size);
-            if (pict == NULL) 
-                goto fail;
+            CHECKED_ALLOCZ(pict, c_size)
             s->aux_picture_base[i] = pict;
             s->aux_picture[i] = pict + pict_start;
+            if(i>0) memset(s->aux_picture_base[i], 128, c_size);
         }
+      }
+      s->ip_buffer_count= 2;
     }
     
+    CHECKED_ALLOCZ(s->edge_emu_buffer, (s->width+64)*2*17*2); //(width + edge + align)*interlaced*MBsize*tolerance
+    
     if (s->encoding) {
         int j;
         int mv_table_size= (s->mb_width+2)*(s->mb_height+2);
-
-        /* Allocate MB type table */
-        s->mb_type = av_mallocz(s->mb_num * sizeof(char));
-        if (s->mb_type == NULL) {
-            perror("malloc");
-            goto fail;
-        }
         
-        s->mb_var = av_mallocz(s->mb_num * sizeof(INT16));
-        if (s->mb_var == NULL) {
-            perror("malloc");
-            goto fail;
-        }
+        CHECKED_ALLOCZ(s->mb_var   , s->mb_num * sizeof(INT16))
+        CHECKED_ALLOCZ(s->mc_mb_var, s->mb_num * sizeof(INT16))
 
         /* Allocate MV tables */
-        s->p_mv_table = av_mallocz(mv_table_size * 2 * sizeof(INT16));
-        if (s->p_mv_table == NULL) {
-            perror("malloc");
-            goto fail;
-        }
-        s->last_p_mv_table = av_mallocz(mv_table_size * 2 * sizeof(INT16));
-        if (s->last_p_mv_table == NULL) {
-            perror("malloc");
-            goto fail;
-        }
-        s->b_forw_mv_table = av_mallocz(mv_table_size * 2 * sizeof(INT16));
-        if (s->b_forw_mv_table == NULL) {
-            perror("malloc");
-            goto fail;
-        }
-        s->b_back_mv_table = av_mallocz(mv_table_size * 2 * sizeof(INT16));
-        if (s->b_back_mv_table == NULL) {
-            perror("malloc");
-            goto fail;
-        }
-        s->b_bidir_forw_mv_table = av_mallocz(mv_table_size * 2 * sizeof(INT16));
-        if (s->b_bidir_forw_mv_table == NULL) {
-            perror("malloc");
-            goto fail;
-        }
-        s->b_bidir_back_mv_table = av_mallocz(mv_table_size * 2 * sizeof(INT16));
-        if (s->b_bidir_back_mv_table == NULL) {
-            perror("malloc");
-            goto fail;
-        }
-        s->b_direct_forw_mv_table = av_mallocz(mv_table_size * 2 * sizeof(INT16));
-        if (s->b_direct_forw_mv_table == NULL) {
-            perror("malloc");
-            goto fail;
-        }
-        s->b_direct_back_mv_table = av_mallocz(mv_table_size * 2 * sizeof(INT16));
-        if (s->b_direct_back_mv_table == NULL) {
-            perror("malloc");
-            goto fail;
-        }
-        s->b_direct_mv_table = av_mallocz(mv_table_size * 2 * sizeof(INT16));
-        if (s->b_direct_mv_table == NULL) {
-            perror("malloc");
-            goto fail;
-        }
-
-        s->me_scratchpad = av_mallocz( s->linesize*16*3*sizeof(uint8_t));
-        if (s->me_scratchpad == NULL) {
-            perror("malloc");
-            goto fail;
-        }
+        CHECKED_ALLOCZ(s->p_mv_table            , mv_table_size * 2 * sizeof(INT16))
+        CHECKED_ALLOCZ(s->b_forw_mv_table       , mv_table_size * 2 * sizeof(INT16))
+        CHECKED_ALLOCZ(s->b_back_mv_table       , mv_table_size * 2 * sizeof(INT16))
+        CHECKED_ALLOCZ(s->b_bidir_forw_mv_table , mv_table_size * 2 * sizeof(INT16))
+        CHECKED_ALLOCZ(s->b_bidir_back_mv_table , mv_table_size * 2 * sizeof(INT16))
+        CHECKED_ALLOCZ(s->b_direct_forw_mv_table, mv_table_size * 2 * sizeof(INT16))
+        CHECKED_ALLOCZ(s->b_direct_back_mv_table, mv_table_size * 2 * sizeof(INT16))
+        CHECKED_ALLOCZ(s->b_direct_mv_table     , mv_table_size * 2 * sizeof(INT16))
+
+        CHECKED_ALLOCZ(s->me_scratchpad,  s->linesize*16*3*sizeof(uint8_t))
+        
+        CHECKED_ALLOCZ(s->me_map      , ME_MAP_SIZE*sizeof(uint32_t))
+        CHECKED_ALLOCZ(s->me_score_map, ME_MAP_SIZE*sizeof(uint16_t))
 
         if(s->max_b_frames){
             for(j=0; j<REORDER_BUFFER_SIZE; j++){
@@ -251,23 +216,26 @@ int MPV_common_init(MpegEncContext *s)
                     shift = (i == 0) ? 0 : 1;
                     c_size = (w >> shift) * (h >> shift);
 
-                    pict = av_mallocz(c_size);
-                    if (pict == NULL)
-                        goto fail;
+                    CHECKED_ALLOCZ(pict, c_size);
                     s->picture_buffer[j][i] = pict;
                 }
             }
         }
+
+        if(s->codec_id==CODEC_ID_MPEG4){
+            CHECKED_ALLOCZ(s->tex_pb_buffer, PB_BUFFER_SIZE);
+            CHECKED_ALLOCZ(   s->pb2_buffer, PB_BUFFER_SIZE);
+        }
     }
     
     if (s->out_format == FMT_H263 || s->encoding) {
         int size;
+        /* Allocate MB type table */
+        CHECKED_ALLOCZ(s->mb_type  , s->mb_num * sizeof(UINT8))
+
         /* MV prediction */
         size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
-        s->motion_val = malloc(size * 2 * sizeof(INT16));
-        if (s->motion_val == NULL)
-            goto fail;
-        memset(s->motion_val, 0, size * 2 * sizeof(INT16));
+        CHECKED_ALLOCZ(s->motion_val, size * 2 * sizeof(INT16));
     }
 
     if (s->h263_pred || s->h263_plus) {
@@ -278,44 +246,38 @@ int MPV_common_init(MpegEncContext *s)
         y_size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
         c_size = (s->mb_width + 2) * (s->mb_height + 2);
         size = y_size + 2 * c_size;
-        s->dc_val[0] = malloc(size * sizeof(INT16));
-        if (s->dc_val[0] == NULL)
-            goto fail;
+        CHECKED_ALLOCZ(s->dc_val[0], size * sizeof(INT16));
         s->dc_val[1] = s->dc_val[0] + y_size;
         s->dc_val[2] = s->dc_val[1] + c_size;
         for(i=0;i<size;i++)
             s->dc_val[0][i] = 1024;
 
         /* ac values */
-        s->ac_val[0] = av_mallocz(size * sizeof(INT16) * 16);
-        if (s->ac_val[0] == NULL)
-            goto fail;
+        CHECKED_ALLOCZ(s->ac_val[0], size * sizeof(INT16) * 16);
         s->ac_val[1] = s->ac_val[0] + y_size;
         s->ac_val[2] = s->ac_val[1] + c_size;
         
         /* cbp values */
-        s->coded_block = av_mallocz(y_size);
-        if (!s->coded_block)
-            goto fail;
+        CHECKED_ALLOCZ(s->coded_block, y_size);
 
         /* which mb is a intra block */
-        s->mbintra_table = av_mallocz(s->mb_num);
-        if (!s->mbintra_table)
-            goto fail;
+        CHECKED_ALLOCZ(s->mbintra_table, s->mb_num);
         memset(s->mbintra_table, 1, s->mb_num);
         
         /* divx501 bitstream reorder buffer */
-        s->bitstream_buffer= av_mallocz(BITSTREAM_BUFFER_SIZE);
-        if (!s->bitstream_buffer)
-            goto fail;
+        CHECKED_ALLOCZ(s->bitstream_buffer, BITSTREAM_BUFFER_SIZE);
+        
+        /* cbp, ac_pred, pred_dir */
+        CHECKED_ALLOCZ(s->cbp_table  , s->mb_num * sizeof(UINT8))
+        CHECKED_ALLOCZ(s->pred_dir_table, s->mb_num * sizeof(UINT8))
     }
+    CHECKED_ALLOCZ(s->qscale_table  , s->mb_num * sizeof(UINT8))
+    
     /* default structure is frame */
     s->picture_structure = PICT_FRAME;
-
+    
     /* init macroblock skip table */
-    s->mbskip_table = av_mallocz(s->mb_num);
-    if (!s->mbskip_table)
-        goto fail;
+    CHECKED_ALLOCZ(s->mbskip_table, s->mb_num);
     
     s->block= s->blocks[0];
 
@@ -326,44 +288,59 @@ int MPV_common_init(MpegEncContext *s)
     return -1;
 }
 
-#define CHECK_FREE(p)\
-{\
-    if(p) free(p);\
-    p= NULL;\
-}
+
+//extern int sads;
 
 /* init common structure for both encoder and decoder */
 void MPV_common_end(MpegEncContext *s)
 {
     int i;
 
-    CHECK_FREE(s->mb_type);
-    CHECK_FREE(s->mb_var);
-    CHECK_FREE(s->p_mv_table);
-    CHECK_FREE(s->last_p_mv_table);
-    CHECK_FREE(s->b_forw_mv_table);
-    CHECK_FREE(s->b_back_mv_table);
-    CHECK_FREE(s->b_bidir_forw_mv_table);
-    CHECK_FREE(s->b_bidir_back_mv_table);
-    CHECK_FREE(s->b_direct_forw_mv_table);
-    CHECK_FREE(s->b_direct_back_mv_table);
-    CHECK_FREE(s->b_direct_mv_table);
-    CHECK_FREE(s->motion_val);
-    CHECK_FREE(s->dc_val[0]);
-    CHECK_FREE(s->ac_val[0]);
-    CHECK_FREE(s->coded_block);
-    CHECK_FREE(s->mbintra_table);
-    CHECK_FREE(s->me_scratchpad);
-
-    CHECK_FREE(s->mbskip_table);
-    CHECK_FREE(s->bitstream_buffer);
+    av_freep(&s->mb_type);
+    av_freep(&s->mb_var);
+    av_freep(&s->mc_mb_var);
+    av_freep(&s->p_mv_table);
+    av_freep(&s->b_forw_mv_table);
+    av_freep(&s->b_back_mv_table);
+    av_freep(&s->b_bidir_forw_mv_table);
+    av_freep(&s->b_bidir_back_mv_table);
+    av_freep(&s->b_direct_forw_mv_table);
+    av_freep(&s->b_direct_back_mv_table);
+    av_freep(&s->b_direct_mv_table);
+    av_freep(&s->motion_val);
+    av_freep(&s->dc_val[0]);
+    av_freep(&s->ac_val[0]);
+    av_freep(&s->coded_block);
+    av_freep(&s->mbintra_table);
+    av_freep(&s->cbp_table);
+    av_freep(&s->pred_dir_table);
+    av_freep(&s->qscale_table);
+    av_freep(&s->me_scratchpad);
+    av_freep(&s->me_map);
+    av_freep(&s->me_score_map);
+    
+    av_freep(&s->mbskip_table);
+    av_freep(&s->bitstream_buffer);
+    av_freep(&s->tex_pb_buffer);
+    av_freep(&s->pb2_buffer);
+    av_freep(&s->edge_emu_buffer);
+    
     for(i=0;i<3;i++) {
         int j;
-        CHECK_FREE(s->last_picture_base[i]);
-        CHECK_FREE(s->next_picture_base[i]);
-        CHECK_FREE(s->aux_picture_base[i]);
+        if(!(s->flags&CODEC_FLAG_DR1)){
+            av_freep(&s->last_picture_base[i]);
+            av_freep(&s->next_picture_base[i]);
+            av_freep(&s->aux_picture_base[i]);
+        }
+        s->last_picture_base[i]=
+        s->next_picture_base[i]=
+        s->aux_picture_base [i] = NULL;
+        s->last_picture[i]=
+        s->next_picture[i]=
+        s->aux_picture [i] = NULL;
+
         for(j=0; j<REORDER_BUFFER_SIZE; j++){
-            CHECK_FREE(s->picture_buffer[j][i]);
+            av_freep(&s->picture_buffer[j][i]);
         }
     }
     s->context_initialized = 0;
@@ -382,6 +359,10 @@ int MPV_encode_init(AVCodecContext *avctx)
     s->frame_rate = avctx->frame_rate;
     s->width = avctx->width;
     s->height = avctx->height;
+    if(avctx->gop_size > 600){
+        fprintf(stderr, "Warning keyframe interval too large! reducing it ...\n");
+        avctx->gop_size=600;
+    }
     s->gop_size = avctx->gop_size;
     s->rtp_mode = avctx->rtp_mode;
     s->rtp_payload_size = avctx->rtp_payload_size;
@@ -393,6 +374,7 @@ int MPV_encode_init(AVCodecContext *avctx)
     s->qcompress= avctx->qcompress;
     s->qblur= avctx->qblur;
     s->b_quant_factor= avctx->b_quant_factor;
+    s->b_quant_offset= avctx->b_quant_offset;
     s->avctx = avctx;
     s->aspect_ratio_info= avctx->aspect_ratio_info;
     s->flags= avctx->flags;
@@ -400,6 +382,10 @@ int MPV_encode_init(AVCodecContext *avctx)
     s->rc_strategy= avctx->rc_strategy;
     s->b_frame_strategy= avctx->b_frame_strategy;
     s->codec_id= avctx->codec->id;
+    s->luma_elim_threshold  = avctx->luma_elim_threshold;
+    s->chroma_elim_threshold= avctx->chroma_elim_threshold;
+    s->strict_std_compliance= avctx->strict_std_compliance;
+    s->data_partitioning= avctx->flags & CODEC_FLAG_PART;
 
     if (s->gop_size <= 1) {
         s->intra_only = 1;
@@ -427,10 +413,11 @@ int MPV_encode_init(AVCodecContext *avctx)
         s->out_format = FMT_MJPEG;
         s->intra_only = 1; /* force intra only for jpeg */
         s->mjpeg_write_tables = 1; /* write all tables */
+       s->mjpeg_data_only_frames = 0; /* write all the needed headers */
         s->mjpeg_vsample[0] = 2; /* set up default sampling factors */
         s->mjpeg_vsample[1] = 1; /* the only currently supported values */
         s->mjpeg_vsample[2] = 1; 
-        s->mjpeg_hsample[0] = 2; 
+        s->mjpeg_hsample[0] = 2;
         s->mjpeg_hsample[1] = 1; 
         s->mjpeg_hsample[2] = 1; 
         if (mjpeg_init(s) < 0)
@@ -495,15 +482,26 @@ int MPV_encode_init(AVCodecContext *avctx)
         s->msmpeg4_version= 3;
         avctx->delay=0;
         break;
+    case CODEC_ID_WMV1:
+        s->out_format = FMT_H263;
+        s->h263_msmpeg4 = 1;
+        s->h263_pred = 1;
+        s->unrestricted_mv = 1;
+        s->msmpeg4_version= 4;
+        avctx->delay=0;
+        break;
+    case CODEC_ID_WMV2:
+        s->out_format = FMT_H263;
+        s->h263_msmpeg4 = 1;
+        s->h263_pred = 1;
+        s->unrestricted_mv = 1;
+        s->msmpeg4_version= 5;
+        avctx->delay=0;
+        break;
     default:
         return -1;
     }
     
-    if((s->flags&CODEC_FLAG_4MV) && !(s->flags&CODEC_FLAG_HQ)){
-        printf("4MV is currently only supported in HQ mode\n");
-        return -1;
-    }
-
     { /* set up some save defaults, some codecs might override them later */
         static int done=0;
         if(!done){
@@ -519,11 +517,15 @@ int MPV_encode_init(AVCodecContext *avctx)
     }
     s->mv_penalty= default_mv_penalty;
     s->fcode_tab= default_fcode_tab;
-
+    s->y_dc_scale_table=
+    s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
     if (s->out_format == FMT_H263)
         h263_encode_init(s);
     else if (s->out_format == FMT_MPEG1)
-        mpeg1_encode_init(s);
+        ff_mpeg1_encode_init(s);
+    if(s->msmpeg4_version)
+        ff_msmpeg4_encode_init(s);
 
     /* dont use mv_penalty table for crap MV as it would be confused */
     if (s->me_method < ME_EPZS) s->mv_penalty = default_mv_penalty;
@@ -537,11 +539,11 @@ int MPV_encode_init(AVCodecContext *avctx)
     /* init default q matrix */
     for(i=0;i<64;i++) {
         if(s->out_format == FMT_H263)
-            s->intra_matrix[i] = default_non_intra_matrix[i];
+            s->intra_matrix[i] = ff_mpeg1_default_non_intra_matrix[i];
         else
-            s->intra_matrix[i] = default_intra_matrix[i];
+            s->intra_matrix[i] = ff_mpeg1_default_intra_matrix[i];
 
-        s->inter_matrix[i] = default_non_intra_matrix[i];
+        s->inter_matrix[i] = ff_mpeg1_default_non_intra_matrix[i];
     }
 
     /* precompute matrix */
@@ -612,23 +614,57 @@ static void draw_edges_c(UINT8 *buf, int wrap, int width, int height, int w)
 }
 
 /* generic function for encode/decode called before a frame is coded/decoded */
-void MPV_frame_start(MpegEncContext *s)
+void MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
 {
     int i;
     UINT8 *tmp;
 
     s->mb_skiped = 0;
+    s->decoding_error=0;
+    avctx->mbskip_table= s->mbskip_table;
+
+    if(avctx->flags&CODEC_FLAG_DR1){
+        int i;
+        avctx->get_buffer_callback(avctx, s->width, s->height, s->pict_type);
+
+        s->linesize  = avctx->dr_stride;
+        s->uvlinesize= avctx->dr_uvstride;
+        s->ip_buffer_count= avctx->dr_ip_buffer_count;
+    }
+    avctx->dr_ip_buffer_count= s->ip_buffer_count;
+    
     if (s->pict_type == B_TYPE) {
         for(i=0;i<3;i++) {
+            if(avctx->flags&CODEC_FLAG_DR1)
+                s->aux_picture[i]= avctx->dr_buffer[i];
+            
+            //FIXME the following should never be needed, the decoder should drop b frames if no reference is available
+            if(s->next_picture[i]==NULL)
+                s->next_picture[i]= s->aux_picture[i];
+            if(s->last_picture[i]==NULL)
+                s->last_picture[i]= s->next_picture[i];
+
             s->current_picture[i] = s->aux_picture[i];
         }
     } else {
         for(i=0;i<3;i++) {
             /* swap next and last */
-            tmp = s->last_picture[i];
+            if(avctx->flags&CODEC_FLAG_DR1)
+                tmp= avctx->dr_buffer[i];
+            else
+                tmp = s->last_picture[i];
+
             s->last_picture[i] = s->next_picture[i];
             s->next_picture[i] = tmp;
             s->current_picture[i] = tmp;
+
+            s->last_dr_opaque= s->next_dr_opaque;
+            s->next_dr_opaque= avctx->dr_opaque_frame;
+
+            if(s->has_b_frames && s->last_dr_opaque && s->codec_id!=CODEC_ID_SVQ1)
+                avctx->dr_opaque_frame= s->last_dr_opaque;
+            else
+                avctx->dr_opaque_frame= s->next_dr_opaque;
         }
     }
 }
@@ -636,17 +672,19 @@ void MPV_frame_start(MpegEncContext *s)
 /* generic function for encode/decode called after a frame has been coded/decoded */
 void MPV_frame_end(MpegEncContext *s)
 {
+//    if((s->picture_number%100)==0 && s->encoding) printf("sads:%d //\n", sads);
+
     /* draw edge for correct motion prediction if outside */
-    if (s->pict_type != B_TYPE && !s->intra_only) {
-      if(s->avctx==NULL || s->avctx->codec->id!=CODEC_ID_MPEG4 || s->divx_version==500){
+    if (s->pict_type != B_TYPE && !s->intra_only && !(s->flags&CODEC_FLAG_EMU_EDGE)) {
+      if(s->avctx==NULL || s->avctx->codec->id!=CODEC_ID_MPEG4 || s->divx_version>=500){
         draw_edges(s->current_picture[0], s->linesize, s->mb_width*16, s->mb_height*16, EDGE_WIDTH);
-        draw_edges(s->current_picture[1], s->linesize/2, s->mb_width*8, s->mb_height*8, EDGE_WIDTH/2);
-        draw_edges(s->current_picture[2], s->linesize/2, s->mb_width*8, s->mb_height*8, EDGE_WIDTH/2);
+        draw_edges(s->current_picture[1], s->uvlinesize, s->mb_width*8, s->mb_height*8, EDGE_WIDTH/2);
+        draw_edges(s->current_picture[2], s->uvlinesize, s->mb_width*8, s->mb_height*8, EDGE_WIDTH/2);
       }else{
         /* mpeg4? / opendivx / xvid */
         draw_edges(s->current_picture[0], s->linesize, s->width, s->height, EDGE_WIDTH);
-        draw_edges(s->current_picture[1], s->linesize/2, s->width/2, s->height/2, EDGE_WIDTH/2);
-        draw_edges(s->current_picture[2], s->linesize/2, s->width/2, s->height/2, EDGE_WIDTH/2);
+        draw_edges(s->current_picture[1], s->uvlinesize, s->width/2, s->height/2, EDGE_WIDTH/2);
+        draw_edges(s->current_picture[2], s->uvlinesize, s->width/2, s->height/2, EDGE_WIDTH/2);
       }
     }
     emms_c();
@@ -654,7 +692,7 @@ void MPV_frame_end(MpegEncContext *s)
     if(s->pict_type!=B_TYPE){
         s->last_non_b_pict_type= s->pict_type;
         s->last_non_b_qscale= s->qscale;
-        s->last_non_b_mc_mb_var= s->mc_mb_var;
+        s->last_non_b_mc_mb_var= s->mc_mb_var_sum;
         s->num_available_buffers++;
         if(s->num_available_buffers>2) s->num_available_buffers= 2;
     }
@@ -691,8 +729,8 @@ void reorder_input(MpegEncContext *s, AVPicture *pict)
 //printf("index:%d type:%d strides: %d %d\n", index, s->input_pict_type, pict->linesize[0], s->linesize);
     if(   (index==0 || (s->flags&CODEC_FLAG_INPUT_PRESERVED))
        && pict->linesize[0] == s->linesize
-       && pict->linesize[1] == s->linesize>>1
-       && pict->linesize[2] == s->linesize>>1){
+       && pict->linesize[1] == s->uvlinesize
+       && pict->linesize[2] == s->uvlinesize){
 //printf("ptr\n");
         for(i=0; i<3; i++){
             s->coded_order[index].picture[i]= pict->data[i];
@@ -789,10 +827,12 @@ int MPV_encode_picture(AVCodecContext *avctx,
         s->picture_in_gop_number= s->coded_order[0].picture_in_gop_number;
         s->picture_number= s->coded_order[0].picture_number;
 
-        MPV_frame_start(s);
+        MPV_frame_start(s, avctx);
 
         encode_picture(s, s->picture_number);
-        avctx->key_frame = (s->pict_type == I_TYPE);
+        avctx->key_frame   = (s->pict_type == I_TYPE);
+        avctx->pict_type   = s->pict_type;
+        avctx->real_pict_num  = s->picture_number;
         avctx->header_bits = s->header_bits;
         avctx->mv_bits     = s->mv_bits;
         avctx->misc_bits   = s->misc_bits;
@@ -811,6 +851,7 @@ int MPV_encode_picture(AVCodecContext *avctx,
         
         if(s->flags&CODEC_FLAG_PASS1)
             ff_write_pass1_stats(s);
+    
     }
 
     s->input_picture_number++;
@@ -843,8 +884,9 @@ static inline void gmc1_motion(MpegEncContext *s,
                                int h)
 {
     UINT8 *ptr;
-    int offset, src_x, src_y, linesize;
+    int offset, src_x, src_y, linesize, uvlinesize;
     int motion_x, motion_y;
+    int emu=0;
 
     if(s->real_sprite_warping_points>1) printf("more than 1 warp point isnt supported\n");
     motion_x= s->sprite_offset[0][0];
@@ -861,9 +903,18 @@ static inline void gmc1_motion(MpegEncContext *s,
         motion_y =0;
     
     linesize = s->linesize;
+    uvlinesize = s->uvlinesize;
     ptr = ref_picture[0] + (src_y * linesize) + src_x + src_offset;
 
     dest_y+=dest_offset;
+    if(s->flags&CODEC_FLAG_EMU_EDGE){
+        if(src_x<0 || src_y<0 || src_x + (motion_x&15) + 16 > s->width
+                              || src_y + (motion_y&15) + h  > s->height){
+            emulated_edge_mc(s, ptr, linesize, 17, h+1, src_x, src_y, s->width, s->height);
+            ptr= s->edge_emu_buffer;
+            emu=1;
+        }
+    }
     gmc1(dest_y  , ptr  , linesize, h, motion_x&15, motion_y&15, s->no_rounding);
     gmc1(dest_y+8, ptr+8, linesize, h, motion_x&15, motion_y&15, s->no_rounding);
 
@@ -880,15 +931,95 @@ static inline void gmc1_motion(MpegEncContext *s,
     if (src_y == s->height>>1)
         motion_y =0;
 
-    offset = (src_y * linesize>>1) + src_x + (src_offset>>1);
+    offset = (src_y * uvlinesize) + src_x + (src_offset>>1);
     ptr = ref_picture[1] + offset;
-    gmc1(dest_cb + (dest_offset>>1), ptr, linesize>>1, h>>1, motion_x&15, motion_y&15, s->no_rounding);
+    if(emu){
+        emulated_edge_mc(s, ptr, uvlinesize, 9, (h>>1)+1, src_x, src_y, s->width>>1, s->height>>1);
+        ptr= s->edge_emu_buffer;
+    }
+    gmc1(dest_cb + (dest_offset>>1), ptr, uvlinesize, h>>1, motion_x&15, motion_y&15, s->no_rounding);
+    
     ptr = ref_picture[2] + offset;
-    gmc1(dest_cr + (dest_offset>>1), ptr, linesize>>1, h>>1, motion_x&15, motion_y&15, s->no_rounding);
+    if(emu){
+        emulated_edge_mc(s, ptr, uvlinesize, 9, (h>>1)+1, src_x, src_y, s->width>>1, s->height>>1);
+        ptr= s->edge_emu_buffer;
+    }
+    gmc1(dest_cr + (dest_offset>>1), ptr, uvlinesize, h>>1, motion_x&15, motion_y&15, s->no_rounding);
     
     return;
 }
 
+static void emulated_edge_mc(MpegEncContext *s, UINT8 *src, int linesize, int block_w, int block_h, 
+                                    int src_x, int src_y, int w, int h){
+    int x, y;
+    int start_y, start_x, end_y, end_x;
+    UINT8 *buf= s->edge_emu_buffer;
+#if 0
+    if(s->codec_id!=CODEC_ID_MPEG4 || s->divx_version>=500){
+        if(block_w < 10){
+            w= (w+7)&(~7);
+            h= (h+7)&(~7);
+        }else{
+            w= (w+15)&(~15);
+            h= (h+15)&(~15);
+        }
+    }
+#endif
+    if(src_y>= h){
+        src+= (h-1-src_y)*linesize;
+        src_y=h-1;
+    }else if(src_y<=-block_h){
+        src+= (1-block_h-src_y)*linesize;
+        src_y=1-block_h;
+    }
+    if(src_x>= w){
+        src+= (w-1-src_x);
+        src_x=w-1;
+    }else if(src_x<=-block_w){
+        src+= (1-block_w-src_x);
+        src_x=1-block_w;
+    }
+
+    start_y= MAX(0, -src_y);
+    start_x= MAX(0, -src_x);
+    end_y= MIN(block_h, h-src_y);
+    end_x= MIN(block_w, w-src_x);
+
+    // copy existing part
+    for(y=start_y; y<end_y; y++){
+        for(x=start_x; x<end_x; x++){
+            buf[x + y*linesize]= src[x + y*linesize];
+        }
+    }
+
+    //top
+    for(y=0; y<start_y; y++){
+        for(x=start_x; x<end_x; x++){
+            buf[x + y*linesize]= buf[x + start_y*linesize];
+        }
+    }
+
+    //bottom
+    for(y=end_y; y<block_h; y++){
+        for(x=start_x; x<end_x; x++){
+            buf[x + y*linesize]= buf[x + (end_y-1)*linesize];
+        }
+    }
+                                    
+    for(y=0; y<block_h; y++){
+       //left
+        for(x=0; x<start_x; x++){
+            buf[x + y*linesize]= buf[start_x + y*linesize];
+        }
+       
+       //right
+        for(x=end_x; x<block_w; x++){
+            buf[x + y*linesize]= buf[end_x - 1 + y*linesize];
+        }
+    }
+}
+
+
 /* apply one mpeg motion vector to the three components */
 static inline void mpeg_motion(MpegEncContext *s,
                                UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
@@ -898,13 +1029,14 @@ static inline void mpeg_motion(MpegEncContext *s,
                                int motion_x, int motion_y, int h)
 {
     UINT8 *ptr;
-    int dxy, offset, mx, my, src_x, src_y, height, linesize;
+    int dxy, offset, mx, my, src_x, src_y, height, linesize, uvlinesize;
+    int emu=0;
+    
 if(s->quarter_sample)
 {
     motion_x>>=1;
     motion_y>>=1;
 }
-
     dxy = ((motion_y & 1) << 1) | (motion_x & 1);
     src_x = s->mb_x * 16 + (motion_x >> 1);
     src_y = s->mb_y * (16 >> field_based) + (motion_y >> 1);
@@ -917,12 +1049,24 @@ if(s->quarter_sample)
     src_y = clip(src_y, -16, height);
     if (src_y == height)
         dxy &= ~2;
-    linesize = s->linesize << field_based;
+    linesize   = s->linesize << field_based;
+    uvlinesize = s->uvlinesize << field_based;
     ptr = ref_picture[0] + (src_y * linesize) + (src_x) + src_offset;
     dest_y += dest_offset;
+
+    if(s->flags&CODEC_FLAG_EMU_EDGE){
+        if(src_x<0 || src_y<0 || src_x + (motion_x&1) + 16 > s->width
+                              || src_y + (motion_y&1) + h  > height){
+            emulated_edge_mc(s, ptr, linesize, 17, h+1, src_x, src_y, s->width, height);
+            ptr= s->edge_emu_buffer;
+            emu=1;
+        }
+    }
     pix_op[dxy](dest_y, ptr, linesize, h);
     pix_op[dxy](dest_y + 8, ptr + 8, linesize, h);
 
+    if(s->flags&CODEC_FLAG_GRAY) return;
+
     if (s->out_format == FMT_H263) {
         dxy = 0;
         if ((motion_x & 3) != 0)
@@ -947,12 +1091,20 @@ if(s->quarter_sample)
     src_y = clip(src_y, -8, height >> 1);
     if (src_y == (height >> 1))
         dxy &= ~2;
-
-    offset = (src_y * (linesize >> 1)) + src_x + (src_offset >> 1);
+    offset = (src_y * uvlinesize) + src_x + (src_offset >> 1);
     ptr = ref_picture[1] + offset;
-    pix_op[dxy](dest_cb + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
+    if(emu){
+        emulated_edge_mc(s, ptr, uvlinesize, 9, (h>>1)+1, src_x, src_y, s->width>>1, height>>1);
+        ptr= s->edge_emu_buffer;
+    }
+    pix_op[dxy](dest_cb + (dest_offset >> 1), ptr, uvlinesize, h >> 1);
+
     ptr = ref_picture[2] + offset;
-    pix_op[dxy](dest_cr + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
+    if(emu){
+        emulated_edge_mc(s, ptr, uvlinesize, 9, (h>>1)+1, src_x, src_y, s->width>>1, height>>1);
+        ptr= s->edge_emu_buffer;
+    }
+    pix_op[dxy](dest_cr + (dest_offset >> 1), ptr, uvlinesize, h >> 1);
 }
 
 static inline void qpel_motion(MpegEncContext *s,
@@ -965,6 +1117,7 @@ static inline void qpel_motion(MpegEncContext *s,
 {
     UINT8 *ptr;
     int dxy, offset, mx, my, src_x, src_y, height, linesize;
+    int emu=0;
 
     dxy = ((motion_y & 3) << 2) | (motion_x & 3);
     src_x = s->mb_x * 16 + (motion_x >> 2);
@@ -981,11 +1134,22 @@ static inline void qpel_motion(MpegEncContext *s,
     ptr = ref_picture[0] + (src_y * linesize) + src_x + src_offset;
     dest_y += dest_offset;
 //printf("%d %d %d\n", src_x, src_y, dxy);
+    
+    if(s->flags&CODEC_FLAG_EMU_EDGE){
+        if(src_x<0 || src_y<0 || src_x + (motion_x&3) + 16 > s->width
+                              || src_y + (motion_y&3) + h  > height){
+            emulated_edge_mc(s, ptr, linesize, 17, h+1, src_x, src_y, s->width, height);
+            ptr= s->edge_emu_buffer;
+            emu=1;
+        }
+    }
     qpix_op[dxy](dest_y                 , ptr                 , linesize, linesize, motion_x&3, motion_y&3);
     qpix_op[dxy](dest_y              + 8, ptr              + 8, linesize, linesize, motion_x&3, motion_y&3);
     qpix_op[dxy](dest_y + linesize*8    , ptr + linesize*8    , linesize, linesize, motion_x&3, motion_y&3);
     qpix_op[dxy](dest_y + linesize*8 + 8, ptr + linesize*8 + 8, linesize, linesize, motion_x&3, motion_y&3);
     
+    if(s->flags&CODEC_FLAG_GRAY) return;
+
     mx= (motion_x>>1) | (motion_x&1);
     my= (motion_y>>1) | (motion_y&1);
 
@@ -1006,11 +1170,20 @@ static inline void qpel_motion(MpegEncContext *s,
     if (src_y == (height >> 1))
         dxy &= ~2;
 
-    offset = (src_y * (linesize >> 1)) + src_x + (src_offset >> 1);
+    offset = (src_y * s->uvlinesize) + src_x + (src_offset >> 1);
     ptr = ref_picture[1] + offset;
-    pix_op[dxy](dest_cb + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
+    if(emu){
+        emulated_edge_mc(s, ptr,  s->uvlinesize, 9, (h>>1)+1, src_x, src_y, s->width>>1, height>>1);
+        ptr= s->edge_emu_buffer;
+    }
+    pix_op[dxy](dest_cb + (dest_offset >> 1), ptr,  s->uvlinesize, h >> 1);
+    
     ptr = ref_picture[2] + offset;
-    pix_op[dxy](dest_cr + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
+    if(emu){
+        emulated_edge_mc(s, ptr,  s->uvlinesize, 9, (h>>1)+1, src_x, src_y, s->width>>1, height>>1);
+        ptr= s->edge_emu_buffer;
+    }
+    pix_op[dxy](dest_cr + (dest_offset >> 1), ptr,  s->uvlinesize, h >> 1);
 }
 
 
@@ -1022,6 +1195,7 @@ static inline void MPV_motion(MpegEncContext *s,
     int dxy, offset, mx, my, src_x, src_y, motion_x, motion_y;
     int mb_x, mb_y, i;
     UINT8 *ptr, *dest;
+    int emu=0;
 
     mb_x = s->mb_x;
     mb_y = s->mb_y;
@@ -1071,9 +1245,18 @@ static inline void MPV_motion(MpegEncContext *s,
                 dxy &= ~2;
                     
             ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
+            if(s->flags&CODEC_FLAG_EMU_EDGE){
+                if(src_x<0 || src_y<0 || src_x + (motion_x&1) + 8 > s->width
+                                      || src_y + (motion_y&1) + 8 > s->height){
+                    emulated_edge_mc(s, ptr, s->linesize, 9, 9, src_x, src_y, s->width, s->height);
+                    ptr= s->edge_emu_buffer;
+                }
+            }
             dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
             pix_op[dxy](dest, ptr, s->linesize, 8);
         }
+    
+        if(s->flags&CODEC_FLAG_GRAY) break;
         /* In case of 8X8, we construct a single chroma motion vector
            with a special rounding */
         mx = 0;
@@ -1107,11 +1290,24 @@ static inline void MPV_motion(MpegEncContext *s,
         if (src_y == s->height/2)
             dxy &= ~2;
         
-        offset = (src_y * (s->linesize >> 1)) + src_x;
+        offset = (src_y * (s->uvlinesize)) + src_x;
         ptr = ref_picture[1] + offset;
-        pix_op[dxy](dest_cb, ptr, s->linesize >> 1, 8);
+        if(s->flags&CODEC_FLAG_EMU_EDGE){
+                if(src_x<0 || src_y<0 || src_x + (dxy &1) + 8 > s->width >>1
+                                      || src_y + (dxy>>1) + 8 > s->height>>1){
+                    emulated_edge_mc(s, ptr, s->uvlinesize, 9, 9, src_x, src_y, s->width>>1, s->height>>1);
+                    ptr= s->edge_emu_buffer;
+                    emu=1;
+                }
+            }
+        pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);
+
         ptr = ref_picture[2] + offset;
-        pix_op[dxy](dest_cr, ptr, s->linesize >> 1, 8);
+        if(emu){
+            emulated_edge_mc(s, ptr, s->uvlinesize, 9, 9, src_x, src_y, s->width>>1, s->height>>1);
+            ptr= s->edge_emu_buffer;
+        }
+        pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
         break;
     case MV_TYPE_FIELD:
         if (s->picture_structure == PICT_FRAME) {
@@ -1140,27 +1336,61 @@ static inline void put_dct(MpegEncContext *s,
 {
     if (!s->mpeg2)
         s->dct_unquantize(s, block, i, s->qscale);
-    ff_idct (block);
-    put_pixels_clamped(block, dest, line_size);
+    ff_idct_put (dest, line_size, block);
 }
 
 /* add block[] to dest[] */
 static inline void add_dct(MpegEncContext *s, 
                            DCTELEM *block, int i, UINT8 *dest, int line_size)
 {
-    /* skip dequant / idct if we are really late ;) */
-    if(s->hurry_up>1) return;
+    if (s->block_last_index[i] >= 0) {
+        ff_idct_add (dest, line_size, block);
+    }
+}
 
+static inline void add_dequant_dct(MpegEncContext *s, 
+                           DCTELEM *block, int i, UINT8 *dest, int line_size)
+{
     if (s->block_last_index[i] >= 0) {
-        if (!s->mpeg2)
-            if(s->encoding || (!s->h263_msmpeg4))
-                s->dct_unquantize(s, block, i, s->qscale);
+        s->dct_unquantize(s, block, i, s->qscale);
 
-        ff_idct (block);
-        add_pixels_clamped(block, dest, line_size);
+        ff_idct_add (dest, line_size, block);
     }
 }
 
+/**
+ * cleans dc, ac, coded_block for the current non intra MB
+ */
+void ff_clean_intra_table_entries(MpegEncContext *s)
+{
+    int wrap = s->block_wrap[0];
+    int xy = s->block_index[0];
+    
+    s->dc_val[0][xy           ] = 
+    s->dc_val[0][xy + 1       ] = 
+    s->dc_val[0][xy     + wrap] =
+    s->dc_val[0][xy + 1 + wrap] = 1024;
+    /* ac pred */
+    memset(s->ac_val[0][xy       ], 0, 32 * sizeof(INT16));
+    memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(INT16));
+    if (s->msmpeg4_version>=3) {
+        s->coded_block[xy           ] =
+        s->coded_block[xy + 1       ] =
+        s->coded_block[xy     + wrap] =
+        s->coded_block[xy + 1 + wrap] = 0;
+    }
+    /* chroma */
+    wrap = s->block_wrap[4];
+    xy = s->mb_x + 1 + (s->mb_y + 1) * wrap;
+    s->dc_val[1][xy] =
+    s->dc_val[2][xy] = 1024;
+    /* ac pred */
+    memset(s->ac_val[1][xy], 0, 16 * sizeof(INT16));
+    memset(s->ac_val[2][xy], 0, 16 * sizeof(INT16));
+    
+    s->mbintra_table[s->mb_x + s->mb_y*s->mb_width]= 0;
+}
+
 /* generic function called after a macroblock has been parsed by the
    decoder or after it has been encoded by the encoder.
 
@@ -1174,69 +1404,41 @@ static inline void add_dct(MpegEncContext *s,
 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
 {
     int mb_x, mb_y;
-    int dct_linesize, dct_offset;
-    op_pixels_func *op_pix;
-    qpel_mc_func *op_qpix;
+    const int mb_xy = s->mb_y * s->mb_width + s->mb_x;
 
     mb_x = s->mb_x;
     mb_y = s->mb_y;
 
 #ifdef FF_POSTPROCESS
+    /* Obsolete. Exists for compatibility with mplayer only. */
     quant_store[mb_y][mb_x]=s->qscale;
     //printf("[%02d][%02d] %d\n",mb_x,mb_y,s->qscale);
+#else
+    /* even more obsolete, exists for mplayer xp only */
+    if(s->avctx->quant_store) s->avctx->quant_store[mb_y*s->avctx->qstride+mb_x] = s->qscale;
 #endif
+    s->qscale_table[mb_xy]= s->qscale;
 
     /* update DC predictors for P macroblocks */
     if (!s->mb_intra) {
         if (s->h263_pred || s->h263_aic) {
-          if(s->mbintra_table[mb_x + mb_y*s->mb_width])
-          {
-            int wrap, xy, v;
-            s->mbintra_table[mb_x + mb_y*s->mb_width]=0;
-            wrap = 2 * s->mb_width + 2;
-            xy = 2 * mb_x + 1 +  (2 * mb_y + 1) * wrap;
-            v = 1024;
-            
-            s->dc_val[0][xy] = v;
-            s->dc_val[0][xy + 1] = v;
-            s->dc_val[0][xy + wrap] = v;
-            s->dc_val[0][xy + 1 + wrap] = v;
-            /* ac pred */
-            memset(s->ac_val[0][xy], 0, 16 * sizeof(INT16));
-            memset(s->ac_val[0][xy + 1], 0, 16 * sizeof(INT16));
-            memset(s->ac_val[0][xy + wrap], 0, 16 * sizeof(INT16));
-            memset(s->ac_val[0][xy + 1 + wrap], 0, 16 * sizeof(INT16));
-            if (s->h263_msmpeg4) {
-                s->coded_block[xy] = 0;
-                s->coded_block[xy + 1] = 0;
-                s->coded_block[xy + wrap] = 0;
-                s->coded_block[xy + 1 + wrap] = 0;
-            }
-            /* chroma */
-            wrap = s->mb_width + 2;
-            xy = mb_x + 1 + (mb_y + 1) * wrap;
-            s->dc_val[1][xy] = v;
-            s->dc_val[2][xy] = v;
-            /* ac pred */
-            memset(s->ac_val[1][xy], 0, 16 * sizeof(INT16));
-            memset(s->ac_val[2][xy], 0, 16 * sizeof(INT16));
-          }
+            if(s->mbintra_table[mb_xy])
+                ff_clean_intra_table_entries(s);
         } else {
-            s->last_dc[0] = 128 << s->intra_dc_precision;
-            s->last_dc[1] = 128 << s->intra_dc_precision;
+            s->last_dc[0] =
+            s->last_dc[1] =
             s->last_dc[2] = 128 << s->intra_dc_precision;
         }
     }
     else if (s->h263_pred || s->h263_aic)
-        s->mbintra_table[mb_x + mb_y*s->mb_width]=1;
+        s->mbintra_table[mb_xy]=1;
 
     /* update motion predictor, not for B-frames as they need the motion_val from the last P/S-Frame */
-    if (s->out_format == FMT_H263) { //FIXME move into h263.c if possible, format specific stuff shouldnt be here
-      if(s->pict_type!=B_TYPE){
-        int xy, wrap, motion_x, motion_y;
+    if (s->out_format == FMT_H263 && s->pict_type!=B_TYPE) { //FIXME move into h263.c if possible, format specific stuff shouldnt be here
+        int motion_x, motion_y;
         
-        wrap = 2 * s->mb_width + 2;
-        xy = 2 * mb_x + 1 + (2 * mb_y + 1) * wrap;
+        const int wrap = s->block_wrap[0];
+        const int xy = s->block_index[0];
         if (s->mb_intra) {
             motion_x = 0;
             motion_y = 0;
@@ -1255,32 +1457,36 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
             s->motion_val[xy + 1 + wrap][0] = motion_x;
             s->motion_val[xy + 1 + wrap][1] = motion_y;
         }
-      }
     }
     
     if (!(s->encoding && (s->intra_only || s->pict_type==B_TYPE))) {
         UINT8 *dest_y, *dest_cb, *dest_cr;
-        UINT8 *mbskip_ptr;
+        int dct_linesize, dct_offset;
+        op_pixels_func *op_pix;
+        qpel_mc_func *op_qpix;
 
         /* avoid copy if macroblock skipped in last frame too 
            dont touch it for B-frames as they need the skip info from the next p-frame */
         if (s->pict_type != B_TYPE) {
-            mbskip_ptr = &s->mbskip_table[s->mb_y * s->mb_width + s->mb_x];
+            UINT8 *mbskip_ptr = &s->mbskip_table[mb_xy];
             if (s->mb_skiped) {
                 s->mb_skiped = 0;
+
+                (*mbskip_ptr) ++; /* indicate that this time we skiped it */
+                if(*mbskip_ptr >99) *mbskip_ptr= 99;
+
                 /* if previous was skipped too, then nothing to do ! 
                    skip only during decoding as we might trash the buffers during encoding a bit */
-                if (*mbskip_ptr != 0 && !s->encoding) 
+                if (*mbskip_ptr >= s->ip_buffer_count  && !s->encoding) 
                     goto the_end;
-                *mbskip_ptr = 1; /* indicate that this time we skiped it */
             } else {
                 *mbskip_ptr = 0; /* not skipped */
             }
         }
 
-        dest_y = s->current_picture[0] + (mb_y * 16 * s->linesize) + mb_x * 16;
-        dest_cb = s->current_picture[1] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
-        dest_cr = s->current_picture[2] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
+        dest_y = s->current_picture [0] + (mb_y * 16* s->linesize  ) + mb_x * 16;
+        dest_cb = s->current_picture[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
+        dest_cr = s->current_picture[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
 
         if (s->interlaced_dct) {
             dct_linesize = s->linesize * 2;
@@ -1292,7 +1498,8 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
 
         if (!s->mb_intra) {
             /* motion handling */
-            if((s->flags&CODEC_FLAG_HQ) || (!s->encoding)){
+            /* decoding or more than one mb_type (MC was allready done otherwise) */
+            if((!s->encoding) || (s->mb_type[mb_xy]&(s->mb_type[mb_xy]-1))){
                 if ((!s->no_rounding) || s->pict_type==B_TYPE){                
                     op_pix = put_pixels_tab;
                     op_qpix= qpel_mc_rnd_tab;
@@ -1313,14 +1520,31 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
                 }
             }
 
-            /* add dct residue */
-            add_dct(s, block[0], 0, dest_y, dct_linesize);
-            add_dct(s, block[1], 1, dest_y + 8, dct_linesize);
-            add_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
-            add_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
+            /* skip dequant / idct if we are really late ;) */
+            if(s->hurry_up>1) goto the_end;
 
-            add_dct(s, block[4], 4, dest_cb, s->linesize >> 1);
-            add_dct(s, block[5], 5, dest_cr, s->linesize >> 1);
+            /* add dct residue */
+            if(s->encoding || !(s->mpeg2 || s->h263_msmpeg4 || s->codec_id==CODEC_ID_MPEG4)){
+                add_dequant_dct(s, block[0], 0, dest_y, dct_linesize);
+                add_dequant_dct(s, block[1], 1, dest_y + 8, dct_linesize);
+                add_dequant_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
+                add_dequant_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
+
+                if(!(s->flags&CODEC_FLAG_GRAY)){
+                    add_dequant_dct(s, block[4], 4, dest_cb, s->uvlinesize);
+                    add_dequant_dct(s, block[5], 5, dest_cr, s->uvlinesize);
+                }
+            } else {
+                add_dct(s, block[0], 0, dest_y, dct_linesize);
+                add_dct(s, block[1], 1, dest_y + 8, dct_linesize);
+                add_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
+                add_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
+
+                if(!(s->flags&CODEC_FLAG_GRAY)){
+                    add_dct(s, block[4], 4, dest_cb, s->uvlinesize);
+                    add_dct(s, block[5], 5, dest_cr, s->uvlinesize);
+                }
+            }
         } else {
             /* dct only in intra block */
             put_dct(s, block[0], 0, dest_y, dct_linesize);
@@ -1328,14 +1552,60 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
             put_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
             put_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
 
-            put_dct(s, block[4], 4, dest_cb, s->linesize >> 1);
-            put_dct(s, block[5], 5, dest_cr, s->linesize >> 1);
+            if(!(s->flags&CODEC_FLAG_GRAY)){
+                put_dct(s, block[4], 4, dest_cb, s->uvlinesize);
+                put_dct(s, block[5], 5, dest_cr, s->uvlinesize);
+            }
         }
     }
  the_end:
     emms_c(); //FIXME remove
 }
 
+static inline void dct_single_coeff_elimination(MpegEncContext *s, int n, int threshold, int skip_dc)
+{
+    static const char tab[64]=
+        {3,2,2,1,1,1,1,1,
+         1,1,1,1,1,1,1,1,
+         1,1,1,1,1,1,1,1,
+         0,0,0,0,0,0,0,0,
+         0,0,0,0,0,0,0,0,
+         0,0,0,0,0,0,0,0,
+         0,0,0,0,0,0,0,0,
+         0,0,0,0,0,0,0,0};
+    int score=0;
+    int run=0;
+    int i;
+    DCTELEM *block= s->block[n];
+    const int last_index= s->block_last_index[n];
+
+    if(skip_dc) skip_dc=1;
+    
+    /* are all which we could set to zero are allready zero? */
+    if(last_index<=skip_dc - 1) return;
+
+    for(i=0; i<=last_index; i++){
+        const int j = zigzag_direct[i];
+        const int level = ABS(block[j]);
+        if(level==1){
+            if(skip_dc && i==0) continue;
+            score+= tab[run];
+            run=0;
+        }else if(level>1){
+            return;
+        }else{
+            run++;
+        }
+    }
+    if(score >= threshold) return;
+    for(i=skip_dc; i<=last_index; i++){
+        const int j = zigzag_direct[i];
+        block[j]=0;
+    }
+    if(block[0]) s->block_last_index[n]= 0;
+    else         s->block_last_index[n]= -1;
+}
+
 static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block, int last_index)
 {
     int i;
@@ -1357,6 +1627,7 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
     const int mb_x= s->mb_x;
     const int mb_y= s->mb_y;
     int i;
+    int skip_dct[6];
 #if 0
         if (s->interlaced_dct) {
             dct_linesize = s->linesize * 2;
@@ -1366,34 +1637,60 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
             dct_offset = s->linesize * 8;
         }
 #endif
+    for(i=0; i<6; i++) skip_dct[i]=0;
 
     if (s->mb_intra) {
         UINT8 *ptr;
         int wrap;
+        int emu=0;
 
         wrap = s->linesize;
         ptr = s->new_picture[0] + (mb_y * 16 * wrap) + mb_x * 16;
+        if(mb_x*16+16 > s->width || mb_y*16+16 > s->height){
+            emulated_edge_mc(s, ptr, wrap, 16, 16, mb_x*16, mb_y*16, s->width, s->height);
+            ptr= s->edge_emu_buffer;
+            emu=1;
+        }
         get_pixels(s->block[0], ptr               , wrap);
         get_pixels(s->block[1], ptr            + 8, wrap);
         get_pixels(s->block[2], ptr + 8 * wrap    , wrap);
         get_pixels(s->block[3], ptr + 8 * wrap + 8, wrap);
 
-        wrap >>=1;
-        ptr = s->new_picture[1] + (mb_y * 8 * wrap) + mb_x * 8;
-        get_pixels(s->block[4], ptr, wrap);
+        if(s->flags&CODEC_FLAG_GRAY){
+            skip_dct[4]= 1;
+            skip_dct[5]= 1;
+        }else{
+            wrap >>=1;
+            ptr = s->new_picture[1] + (mb_y * 8 * wrap) + mb_x * 8;
+            if(emu){
+                emulated_edge_mc(s, ptr, wrap, 8, 8, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
+                ptr= s->edge_emu_buffer;
+            }
+            get_pixels(s->block[4], ptr, wrap);
 
-        ptr = s->new_picture[2] + (mb_y * 8 * wrap) + mb_x * 8;
-        get_pixels(s->block[5], ptr, wrap);
+            ptr = s->new_picture[2] + (mb_y * 8 * wrap) + mb_x * 8;
+            if(emu){
+                emulated_edge_mc(s, ptr, wrap, 8, 8, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
+                ptr= s->edge_emu_buffer;
+            }
+            get_pixels(s->block[5], ptr, wrap);
+        }
     }else{
         op_pixels_func *op_pix;
         qpel_mc_func *op_qpix;
         UINT8 *dest_y, *dest_cb, *dest_cr;
-        UINT8 *ptr;
-        int wrap;
+        UINT8 *ptr_y, *ptr_cb, *ptr_cr;
+        int wrap_y, wrap_c;
+        int emu=0;
 
         dest_y  = s->current_picture[0] + (mb_y * 16 * s->linesize       ) + mb_x * 16;
-        dest_cb = s->current_picture[1] + (mb_y * 8  * (s->linesize >> 1)) + mb_x * 8;
-        dest_cr = s->current_picture[2] + (mb_y * 8  * (s->linesize >> 1)) + mb_x * 8;
+        dest_cb = s->current_picture[1] + (mb_y * 8  * (s->uvlinesize)) + mb_x * 8;
+        dest_cr = s->current_picture[2] + (mb_y * 8  * (s->uvlinesize)) + mb_x * 8;
+        wrap_y = s->linesize;
+        wrap_c = wrap_y>>1;
+        ptr_y  = s->new_picture[0] + (mb_y * 16 * wrap_y) + mb_x * 16;
+        ptr_cb = s->new_picture[1] + (mb_y * 8 * wrap_c) + mb_x * 8;
+        ptr_cr = s->new_picture[2] + (mb_y * 8 * wrap_c) + mb_x * 8;
 
         if ((!s->no_rounding) || s->pict_type==B_TYPE){
             op_pix = put_pixels_tab;
@@ -1413,19 +1710,58 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
         if (s->mv_dir & MV_DIR_BACKWARD) {
             MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture, op_pix, op_qpix);
         }
-        wrap = s->linesize;
-        ptr = s->new_picture[0] + (mb_y * 16 * wrap) + mb_x * 16;
-        diff_pixels(s->block[0], ptr               , dest_y               , wrap);
-        diff_pixels(s->block[1], ptr            + 8, dest_y            + 8, wrap);
-        diff_pixels(s->block[2], ptr + 8 * wrap    , dest_y + 8 * wrap    , wrap);
-        diff_pixels(s->block[3], ptr + 8 * wrap + 8, dest_y + 8 * wrap + 8, wrap);
 
-        wrap >>=1;
-        ptr = s->new_picture[1] + (mb_y * 8 * wrap) + mb_x * 8;
-        diff_pixels(s->block[4], ptr, dest_cb, wrap);
+        if(mb_x*16+16 > s->width || mb_y*16+16 > s->height){
+            emulated_edge_mc(s, ptr_y, wrap_y, 16, 16, mb_x*16, mb_y*16, s->width, s->height);
+            ptr_y= s->edge_emu_buffer;
+            emu=1;
+        }
+        diff_pixels(s->block[0], ptr_y                 , dest_y                 , wrap_y);
+        diff_pixels(s->block[1], ptr_y              + 8, dest_y              + 8, wrap_y);
+        diff_pixels(s->block[2], ptr_y + 8 * wrap_y    , dest_y + 8 * wrap_y    , wrap_y);
+        diff_pixels(s->block[3], ptr_y + 8 * wrap_y + 8, dest_y + 8 * wrap_y + 8, wrap_y);
+        
+        if(s->flags&CODEC_FLAG_GRAY){
+            skip_dct[4]= 1;
+            skip_dct[5]= 1;
+        }else{
+            if(emu){
+                emulated_edge_mc(s, ptr_cb, wrap_c, 8, 8, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
+                ptr_cb= s->edge_emu_buffer;
+            }
+            diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
+            if(emu){
+                emulated_edge_mc(s, ptr_cr, wrap_c, 8, 8, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
+                ptr_cr= s->edge_emu_buffer;
+            }
+            diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
+        }
+
+        /* pre quantization */         
+        if(s->mc_mb_var[s->mb_width*mb_y+ mb_x]<2*s->qscale*s->qscale){
+            if(pix_abs8x8(ptr_y               , dest_y               , wrap_y) < 20*s->qscale) skip_dct[0]= 1;
+            if(pix_abs8x8(ptr_y            + 8, dest_y            + 8, wrap_y) < 20*s->qscale) skip_dct[1]= 1;
+            if(pix_abs8x8(ptr_y + 8*wrap_y    , dest_y + 8*wrap_y    , wrap_y) < 20*s->qscale) skip_dct[2]= 1;
+            if(pix_abs8x8(ptr_y + 8*wrap_y + 8, dest_y + 8*wrap_y + 8, wrap_y) < 20*s->qscale) skip_dct[3]= 1;
+            if(pix_abs8x8(ptr_cb              , dest_cb              , wrap_y) < 20*s->qscale) skip_dct[4]= 1;
+            if(pix_abs8x8(ptr_cr              , dest_cr              , wrap_y) < 20*s->qscale) skip_dct[5]= 1;
+#if 0
+{
+ static int stat[7];
+ int num=0;
+ for(i=0; i<6; i++)
+  if(skip_dct[i]) num++;
+ stat[num]++;
+ if(s->mb_x==0 && s->mb_y==0){
+  for(i=0; i<7; i++){
+   printf("%6d %1d\n", stat[i], i);
+  }
+ }
+}
+#endif
+        }
 
-        ptr = s->new_picture[2] + (mb_y * 8 * wrap) + mb_x * 8;
-        diff_pixels(s->block[5], ptr, dest_cr, wrap);
     }
             
 #if 0
@@ -1442,16 +1778,6 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
             }
 #endif
     /* DCT & quantize */
-    if (s->h263_pred && s->msmpeg4_version!=2) {
-        h263_dc_scale(s);
-    } else if (s->h263_aic) {
-        s->y_dc_scale = 2*s->qscale;
-        s->c_dc_scale = 2*s->qscale;
-    } else {
-        /* default quantization values */
-        s->y_dc_scale = 8;
-        s->c_dc_scale = 8;
-    }
     if(s->out_format==FMT_MJPEG){
         for(i=0;i<6;i++) {
             int overflow;
@@ -1460,13 +1786,29 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
         }
     }else{
         for(i=0;i<6;i++) {
-            int overflow;
-            s->block_last_index[i] = dct_quantize(s, s->block[i], i, s->qscale, &overflow);
+            if(!skip_dct[i]){
+                int overflow;
+                s->block_last_index[i] = dct_quantize(s, s->block[i], i, s->qscale, &overflow);
             // FIXME we could decide to change to quantizer instead of clipping
             // JS: I don't think that would be a good idea it could lower quality instead
             //     of improve it. Just INTRADC clipping deserves changes in quantizer
-            if (overflow) clip_coeffs(s, s->block[i], s->block_last_index[i]);
+                if (overflow) clip_coeffs(s, s->block[i], s->block_last_index[i]);
+            }else
+                s->block_last_index[i]= -1;
         }
+        if(s->luma_elim_threshold && !s->mb_intra)
+            for(i=0; i<4; i++)
+                dct_single_coeff_elimination(s, i, s->luma_elim_threshold, 0);
+        if(s->chroma_elim_threshold && !s->mb_intra)
+            for(i=4; i<6; i++)
+                dct_single_coeff_elimination(s, i, s->chroma_elim_threshold, 1);
+    }
+
+    if((s->flags&CODEC_FLAG_GRAY) && s->mb_intra){
+        s->block_last_index[4]=
+        s->block_last_index[5]= 0;
+        s->block[4][0]=
+        s->block[5][0]= 128;
     }
 
     /* huffman encode */
@@ -1488,26 +1830,19 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
     }
 }
 
-static void copy_bits(PutBitContext *pb, UINT8 *src, int length)
+void ff_copy_bits(PutBitContext *pb, UINT8 *src, int length)
 {
-#if 1
     int bytes= length>>4;
     int bits= length&15;
     int i;
 
+    if(length==0) return;
+
     for(i=0; i<bytes; i++) put_bits(pb, 16, be2me_16(((uint16_t*)src)[i]));
     put_bits(pb, bits, be2me_16(((uint16_t*)src)[i])>>(16-bits));
-#else
-    int bytes= length>>3;
-    int bits= length&7;
-    int i;
-
-    for(i=0; i<bytes; i++) put_bits(pb, 8, src[i]);
-    put_bits(pb, bits, src[i]>>(8-bits));
-#endif
 }
 
-static void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type){
+static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type){
     int i;
 
     memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
@@ -1530,7 +1865,7 @@ static void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int
     d->mb_skiped= s->mb_skiped;
 }
 
-static void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int type){
+static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int type){
     int i;
 
     memcpy(d->mv, s->mv, 2*4*2*sizeof(int)); 
@@ -1555,11 +1890,45 @@ static void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int
     d->mv_type= s->mv_type;
     d->mv_dir= s->mv_dir;
     d->pb= s->pb;
+    if(s->data_partitioning){
+        d->pb2= s->pb2;
+        d->tex_pb= s->tex_pb;
+    }
     d->block= s->block;
     for(i=0; i<6; i++)
         d->block_last_index[i]= s->block_last_index[i];
 }
 
+static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type, 
+                           PutBitContext pb[2], PutBitContext pb2[2], PutBitContext tex_pb[2],
+                           int *dmin, int *next_block, int motion_x, int motion_y)
+{
+    int bits_count;
+    
+    copy_context_before_encode(s, backup, type);
+
+    s->block= s->blocks[*next_block];
+    s->pb= pb[*next_block];
+    if(s->data_partitioning){
+        s->pb2   = pb2   [*next_block];
+        s->tex_pb= tex_pb[*next_block];
+    }
+
+    encode_mb(s, motion_x, motion_y);
+
+    bits_count= get_bit_count(&s->pb);
+    if(s->data_partitioning){
+        bits_count+= get_bit_count(&s->pb2);
+        bits_count+= get_bit_count(&s->tex_pb);
+    }
+
+    if(bits_count<*dmin){
+        *dmin= bits_count;
+        *next_block^=1;
+
+        copy_context_after_encode(best, s, type);
+    }
+}
 
 static void encode_picture(MpegEncContext *s, int picture_number)
 {
@@ -1567,7 +1936,16 @@ static void encode_picture(MpegEncContext *s, int picture_number)
     int i;
     int bits;
     MpegEncContext best_s, backup_s;
-    UINT8 bit_buf[7][3000]; //FIXME check that this is ALLWAYS large enogh for a MB
+    UINT8 bit_buf[2][3000];
+    UINT8 bit_buf2[2][3000];
+    UINT8 bit_buf_tex[2][3000];
+    PutBitContext pb[2], pb2[2], tex_pb[2];
+
+    for(i=0; i<2; i++){
+        init_put_bits(&pb    [i], bit_buf    [i], 3000, NULL, NULL);
+        init_put_bits(&pb2   [i], bit_buf2   [i], 3000, NULL, NULL);
+        init_put_bits(&tex_pb[i], bit_buf_tex[i], 3000, NULL, NULL);
+    }
 
     s->picture_number = picture_number;
 
@@ -1579,8 +1957,8 @@ static void encode_picture(MpegEncContext *s, int picture_number)
     s->block_wrap[5]= s->mb_width + 2;
     
     /* Reset the average MB variance */
-    s->avg_mb_var = 0;
-    s->mc_mb_var = 0;
+    s->mb_var_sum = 0;
+    s->mc_mb_var_sum = 0;
 
     /* we need to initialize some time vars before we can encode b-frames */
     if (s->h263_pred && !s->h263_msmpeg4)
@@ -1588,10 +1966,6 @@ static void encode_picture(MpegEncContext *s, int picture_number)
 
     /* Estimate motion for every MB */
     if(s->pict_type != I_TYPE){
-//        int16_t (*tmp)[2]= s->p_mv_table;
-//        s->p_mv_table= s->last_mv_table;
-//        s->last_mv_table= s->mv_table;
-    
         for(mb_y=0; mb_y < s->mb_height; mb_y++) {
             s->block_index[0]= s->block_wrap[0]*(mb_y*2 + 1) - 1;
             s->block_index[1]= s->block_wrap[0]*(mb_y*2 + 1);
@@ -1614,7 +1988,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
             }
         }
         emms_c();
-    }else if(s->pict_type == I_TYPE){
+    }else /* if(s->pict_type == I_TYPE) */{
         /* I-Frame */
         //FIXME do we need to zero them?
         memset(s->motion_val[0], 0, sizeof(INT16)*(s->mb_width*2 + 2)*(s->mb_height*2 + 2)*2);
@@ -1622,7 +1996,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
         memset(s->mb_type      , MB_TYPE_INTRA, sizeof(UINT8)*s->mb_width*s->mb_height);
     }
 
-    if(s->avg_mb_var < s->mc_mb_var && s->pict_type == P_TYPE){ //FIXME subtract MV bits
+    if(s->mb_var_sum < s->mc_mb_var_sum && s->pict_type == P_TYPE){ //FIXME subtract MV bits
         s->pict_type= I_TYPE;
         memset(s->mb_type   , MB_TYPE_INTRA, sizeof(UINT8)*s->mb_width*s->mb_height);
         if(s->max_b_frames==0){
@@ -1656,9 +2030,9 @@ static void encode_picture(MpegEncContext *s, int picture_number)
 
     if (s->out_format == FMT_MJPEG) {
         /* for mjpeg, we do include qscale in the matrix */
-        s->intra_matrix[0] = default_intra_matrix[0];
+        s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0];
         for(i=1;i<64;i++)
-            s->intra_matrix[i] = (default_intra_matrix[i] * s->qscale) >> 3;
+            s->intra_matrix[i] = CLAMP_TO_8BIT((ff_mpeg1_default_intra_matrix[i] * s->qscale) >> 3);
         convert_matrix(s->q_intra_matrix, s->q_intra_matrix16, 
                        s->q_intra_matrix16_bias, s->intra_matrix, s->intra_quant_bias);
     }
@@ -1710,24 +2084,37 @@ static void encode_picture(MpegEncContext *s, int picture_number)
             s->gob_index = 2;
         else
             s->gob_index = 4;
+    }else if(s->codec_id==CODEC_ID_MPEG4){
+        s->gob_index = 1;
     }
-        
-    s->avg_mb_var = s->avg_mb_var / s->mb_num;        
-    
+
+    if(s->codec_id==CODEC_ID_MPEG4 && s->data_partitioning && s->pict_type!=B_TYPE)
+        ff_mpeg4_init_partitions(s);
+
+    s->resync_mb_x=0;
+    s->resync_mb_y=0;
     for(mb_y=0; mb_y < s->mb_height; mb_y++) {
-        /* Put GOB header based on RTP MTU */
+        /* Put GOB header based on RTP MTU for formats which support it per line (H263*)*/
         /* TODO: Put all this stuff in a separate generic function */
         if (s->rtp_mode) {
             if (!mb_y) {
                 s->ptr_lastgob = s->pb.buf;
                 s->ptr_last_mb_line = s->pb.buf;
             } else if (s->out_format == FMT_H263 && !s->h263_pred && !s->h263_msmpeg4 && !(mb_y % s->gob_index)) {
+                // MN: we could move the space check from h263 -> here, as its not h263 specific
                 last_gob = h263_encode_gob_header(s, mb_y);
                 if (last_gob) {
-                    s->first_gob_line = 1;
+                    s->first_slice_line = 1;
+                }else{
+                    /*MN: we reset it here instead at the end of each line cuz mpeg4 can have 
+                          slice lines starting & ending in the middle*/
+                    s->first_slice_line = 0;
                 }
             }
         }
+
+        s->y_dc_scale= s->y_dc_scale_table[ s->qscale ];
+        s->c_dc_scale= s->c_dc_scale_table[ s->qscale ];
         
         s->block_index[0]= s->block_wrap[0]*(mb_y*2 + 1) - 1;
         s->block_index[1]= s->block_wrap[0]*(mb_y*2 + 1);
@@ -1738,10 +2125,8 @@ static void encode_picture(MpegEncContext *s, int picture_number)
         for(mb_x=0; mb_x < s->mb_width; mb_x++) {
             const int mb_type= s->mb_type[mb_y * s->mb_width + mb_x];
             const int xy= (mb_y+1) * (s->mb_width+2) + mb_x + 1;
-            PutBitContext pb;
-            int d;
+//            int d;
             int dmin=10000000;
-            int best=0;
 
             s->mb_x = mb_x;
             s->mb_y = mb_y;
@@ -1751,11 +2136,50 @@ static void encode_picture(MpegEncContext *s, int picture_number)
             s->block_index[3]+=2;
             s->block_index[4]++;
             s->block_index[5]++;
+            
+            /* write gob / video packet header for formats which support it at any MB (MPEG4) */
+            if(s->rtp_mode && s->mb_y>0 && s->codec_id==CODEC_ID_MPEG4){
+                int pdif= pbBufPtr(&s->pb) - s->ptr_lastgob;
+
+                //the *2 is there so we stay below the requested size
+                if(pdif + s->mb_line_avgsize/s->mb_width >= s->rtp_payload_size){ 
+                    if(s->codec_id==CODEC_ID_MPEG4){
+                        if(s->data_partitioning && s->pict_type!=B_TYPE){
+                            ff_mpeg4_merge_partitions(s);
+                            ff_mpeg4_init_partitions(s);
+                        }
+                        ff_mpeg4_encode_video_packet_header(s);
+
+                        if(s->flags&CODEC_FLAG_PASS1){
+                            int bits= get_bit_count(&s->pb);
+                            s->misc_bits+= bits - s->last_bits;
+                            s->last_bits= bits;
+                        }
+                        ff_mpeg4_clean_buffers(s);
+                    }
+                    s->ptr_lastgob = pbBufPtr(&s->pb);
+                    s->first_slice_line=1;
+                    s->resync_mb_x=mb_x;
+                    s->resync_mb_y=mb_y;
+                }
+
+                if(  (s->resync_mb_x   == s->mb_x)
+                   && s->resync_mb_y+1 == s->mb_y){
+                    s->first_slice_line=0; 
+                }
+            }
+
             if(mb_type & (mb_type-1)){ // more than 1 MB type possible
                 int next_block=0;
-                pb= s->pb;
+                int pb_bits_count, pb2_bits_count, tex_pb_bits_count;
 
                 copy_context_before_encode(&backup_s, s, -1);
+                backup_s.pb= s->pb;
+                best_s.data_partitioning= s->data_partitioning;
+                if(s->data_partitioning){
+                    backup_s.pb2= s->pb2;
+                    backup_s.tex_pb= s->tex_pb;
+                }
 
                 if(mb_type&MB_TYPE_INTER){
                     s->mv_dir = MV_DIR_FORWARD;
@@ -1763,22 +2187,10 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                     s->mb_intra= 0;
                     s->mv[0][0][0] = s->p_mv_table[xy][0];
                     s->mv[0][0][1] = s->p_mv_table[xy][1];
-                    init_put_bits(&s->pb, bit_buf[1], 3000, NULL, NULL);
-                    s->block= s->blocks[next_block];
-                    s->last_bits= 0; //done in copy_context_before_encode but we skip that here
-
-                    encode_mb(s, s->mv[0][0][0], s->mv[0][0][1]);
-                    d= get_bit_count(&s->pb);
-                    if(d<dmin){
-                        flush_put_bits(&s->pb);
-                        dmin=d;
-                        copy_context_after_encode(&best_s, s, MB_TYPE_INTER);
-                        best=1;
-                        next_block^=1;
-                    }
+                    encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_INTER, pb, pb2, tex_pb, 
+                                 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
                 }
                 if(mb_type&MB_TYPE_INTER4V){                 
-                    copy_context_before_encode(s, &backup_s, MB_TYPE_INTER4V);
                     s->mv_dir = MV_DIR_FORWARD;
                     s->mv_type = MV_TYPE_8X8;
                     s->mb_intra= 0;
@@ -1786,61 +2198,28 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                         s->mv[0][i][0] = s->motion_val[s->block_index[i]][0];
                         s->mv[0][i][1] = s->motion_val[s->block_index[i]][1];
                     }
-                    init_put_bits(&s->pb, bit_buf[2], 3000, NULL, NULL);
-                    s->block= s->blocks[next_block];
-
-                    encode_mb(s, 0, 0);
-                    d= get_bit_count(&s->pb);
-                    if(d<dmin){
-                        flush_put_bits(&s->pb);
-                        dmin=d;
-                        copy_context_after_encode(&best_s, s, MB_TYPE_INTER4V);
-                        best=2;
-                        next_block^=1;
-                    }
+                    encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_INTER4V, pb, pb2, tex_pb, 
+                                 &dmin, &next_block, 0, 0);
                 }
                 if(mb_type&MB_TYPE_FORWARD){
-                    copy_context_before_encode(s, &backup_s, MB_TYPE_FORWARD);
                     s->mv_dir = MV_DIR_FORWARD;
                     s->mv_type = MV_TYPE_16X16;
                     s->mb_intra= 0;
                     s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
                     s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
-                    init_put_bits(&s->pb, bit_buf[3], 3000, NULL, NULL);
-                    s->block= s->blocks[next_block];
-
-                    encode_mb(s, s->mv[0][0][0], s->mv[0][0][1]);
-                    d= get_bit_count(&s->pb);
-                    if(d<dmin){
-                        flush_put_bits(&s->pb);
-                        dmin=d;
-                        copy_context_after_encode(&best_s, s, MB_TYPE_FORWARD);
-                        best=3;
-                        next_block^=1;
-                    }
+                    encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_FORWARD, pb, pb2, tex_pb, 
+                                 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
                 }
                 if(mb_type&MB_TYPE_BACKWARD){
-                    copy_context_before_encode(s, &backup_s, MB_TYPE_BACKWARD);
                     s->mv_dir = MV_DIR_BACKWARD;
                     s->mv_type = MV_TYPE_16X16;
                     s->mb_intra= 0;
                     s->mv[1][0][0] = s->b_back_mv_table[xy][0];
                     s->mv[1][0][1] = s->b_back_mv_table[xy][1];
-                    init_put_bits(&s->pb, bit_buf[4], 3000, NULL, NULL);
-                    s->block= s->blocks[next_block];
-
-                    encode_mb(s, s->mv[1][0][0], s->mv[1][0][1]);
-                    d= get_bit_count(&s->pb);
-                    if(d<dmin){
-                        flush_put_bits(&s->pb);
-                        dmin=d;
-                        copy_context_after_encode(&best_s, s, MB_TYPE_BACKWARD);
-                        best=4;
-                        next_block^=1;
-                    }
+                    encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_BACKWARD, pb, pb2, tex_pb, 
+                                 &dmin, &next_block, s->mv[1][0][0], s->mv[1][0][1]);
                 }
                 if(mb_type&MB_TYPE_BIDIR){
-                    copy_context_before_encode(s, &backup_s, MB_TYPE_BIDIR);
                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
                     s->mv_type = MV_TYPE_16X16;
                     s->mb_intra= 0;
@@ -1848,21 +2227,10 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                     s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
                     s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
                     s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
-                    init_put_bits(&s->pb, bit_buf[5], 3000, NULL, NULL);
-                    s->block= s->blocks[next_block];
-
-                    encode_mb(s, 0, 0);
-                    d= get_bit_count(&s->pb);
-                    if(d<dmin){
-                        flush_put_bits(&s->pb);
-                        dmin=d;
-                        copy_context_after_encode(&best_s, s, MB_TYPE_BIDIR);
-                        best=5;
-                        next_block^=1;
-                    }
+                    encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_BIDIR, pb, pb2, tex_pb, 
+                                 &dmin, &next_block, 0, 0);
                 }
                 if(mb_type&MB_TYPE_DIRECT){
-                    copy_context_before_encode(s, &backup_s, MB_TYPE_DIRECT);
                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
                     s->mv_type = MV_TYPE_16X16; //FIXME
                     s->mb_intra= 0;
@@ -1870,45 +2238,39 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                     s->mv[0][0][1] = s->b_direct_forw_mv_table[xy][1];
                     s->mv[1][0][0] = s->b_direct_back_mv_table[xy][0];
                     s->mv[1][0][1] = s->b_direct_back_mv_table[xy][1];
-                    init_put_bits(&s->pb, bit_buf[6], 3000, NULL, NULL);
-                    s->block= s->blocks[next_block];
-
-                    encode_mb(s, s->b_direct_mv_table[xy][0], s->b_direct_mv_table[xy][1]);
-                    d= get_bit_count(&s->pb);
-                    if(d<dmin){
-                        flush_put_bits(&s->pb);
-                        dmin=d;
-                        copy_context_after_encode(&best_s, s, MB_TYPE_DIRECT);
-                        best=6;
-                        next_block^=1;
-                    }
+                    encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_DIRECT, pb, pb2, tex_pb, 
+                                 &dmin, &next_block, s->b_direct_mv_table[xy][0], s->b_direct_mv_table[xy][1]);
                 }
                 if(mb_type&MB_TYPE_INTRA){
-                    copy_context_before_encode(s, &backup_s, MB_TYPE_INTRA);
                     s->mv_dir = MV_DIR_FORWARD;
                     s->mv_type = MV_TYPE_16X16;
                     s->mb_intra= 1;
                     s->mv[0][0][0] = 0;
                     s->mv[0][0][1] = 0;
-                    init_put_bits(&s->pb, bit_buf[0], 3000, NULL, NULL);
-                    s->block= s->blocks[next_block];
-                   
-                    encode_mb(s, 0, 0);
-                    d= get_bit_count(&s->pb);
-                    if(d<dmin){
-                        flush_put_bits(&s->pb);
-                        dmin=d;
-                        copy_context_after_encode(&best_s, s, MB_TYPE_INTRA);
-                        best=0;
-                        next_block^=1;
-                    }
+                    encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_INTRA, pb, pb2, tex_pb, 
+                                 &dmin, &next_block, 0, 0);
                     /* force cleaning of ac/dc pred stuff if needed ... */
                     if(s->h263_pred || s->h263_aic)
                         s->mbintra_table[mb_x + mb_y*s->mb_width]=1;
                 }
                 copy_context_after_encode(s, &best_s, -1);
-                copy_bits(&pb, bit_buf[best], dmin);
-                s->pb= pb;
+                
+                pb_bits_count= get_bit_count(&s->pb);
+                flush_put_bits(&s->pb);
+                ff_copy_bits(&backup_s.pb, bit_buf[next_block^1], pb_bits_count);
+                s->pb= backup_s.pb;
+                
+                if(s->data_partitioning){
+                    pb2_bits_count= get_bit_count(&s->pb2);
+                    flush_put_bits(&s->pb2);
+                    ff_copy_bits(&backup_s.pb2, bit_buf2[next_block^1], pb2_bits_count);
+                    s->pb2= backup_s.pb2;
+                    
+                    tex_pb_bits_count= get_bit_count(&s->tex_pb);
+                    flush_put_bits(&s->tex_pb);
+                    ff_copy_bits(&backup_s.tex_pb, bit_buf_tex[next_block^1], tex_pb_bits_count);
+                    s->tex_pb= backup_s.tex_pb;
+                }
                 s->last_bits= get_bit_count(&s->pb);
             } else {
                 int motion_x, motion_y;
@@ -1927,6 +2289,16 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                     motion_x= s->mv[0][0][0] = s->p_mv_table[xy][0];
                     motion_y= s->mv[0][0][1] = s->p_mv_table[xy][1];
                     break;
+                case MB_TYPE_INTER4V:
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_8X8;
+                    s->mb_intra= 0;
+                    for(i=0; i<4; i++){
+                        s->mv[0][i][0] = s->motion_val[s->block_index[i]][0];
+                        s->mv[0][i][1] = s->motion_val[s->block_index[i]][1];
+                    }
+                    motion_x= motion_y= 0;
+                    break;
                 case MB_TYPE_DIRECT:
                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
                     s->mb_intra= 0;
@@ -1973,6 +2345,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
             }
 
             MPV_decode_mb(s, s->block);
+//printf("MB %d %d bits\n", s->mb_x+s->mb_y*s->mb_width, get_bit_count(&s->pb));
         }
 
 
@@ -1986,14 +2359,20 @@ static void encode_picture(MpegEncContext *s, int picture_number)
             }
             //fprintf(stderr, "\nMB line: %d\tSize: %u\tAvg. Size: %u", s->mb_y, 
             //                    (s->pb.buf_ptr - s->ptr_last_mb_line), s->mb_line_avgsize);
-            s->first_gob_line = 0;
+            if(s->codec_id!=CODEC_ID_MPEG4) s->first_slice_line = 0; //FIXME clean
         }
     }
     emms_c();
 
-    if (s->h263_msmpeg4 && s->msmpeg4_version<4 && s->pict_type == I_TYPE)
+    if(s->codec_id==CODEC_ID_MPEG4 && s->data_partitioning && s->pict_type!=B_TYPE)
+        ff_mpeg4_merge_partitions(s);
+
+    if (s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type == I_TYPE)
         msmpeg4_encode_ext_header(s);
 
+    if(s->codec_id==CODEC_ID_MPEG4) 
+        ff_mpeg4_stuffing(&s->pb);
+
     //if (s->gob_number)
     //    fprintf(stderr,"\nNumber of GOB: %d", s->gob_number);
     
@@ -2018,7 +2397,7 @@ static int dct_quantize_c(MpegEncContext *s,
     int bias;
     int max=0;
     unsigned int threshold1, threshold2;
-
+    
     av_fdct (block);
 
     /* we need this permutation so that we correct the IDCT
@@ -2247,6 +2626,119 @@ static void dct_unquantize_h263_c(MpegEncContext *s,
     }
 }
 
+static void remove_ac(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int mb_x, int mb_y)
+{
+    int dc, dcb, dcr, y, i;
+    for(i=0; i<4; i++){
+        dc= s->dc_val[0][mb_x*2+1 + (i&1) + (mb_y*2+1 + (i>>1))*(s->mb_width*2+2)];
+        for(y=0; y<8; y++){
+            int x;
+            for(x=0; x<8; x++){
+                dest_y[x + (i&1)*8 + (y + (i>>1)*8)*s->linesize]= dc/8;
+            }
+        }
+    }
+    dcb = s->dc_val[1][mb_x+1 + (mb_y+1)*(s->mb_width+2)];
+    dcr= s->dc_val[2][mb_x+1 + (mb_y+1)*(s->mb_width+2)];
+    for(y=0; y<8; y++){
+        int x;
+        for(x=0; x<8; x++){
+            dest_cb[x + y*(s->uvlinesize)]= dcb/8;
+            dest_cr[x + y*(s->uvlinesize)]= dcr/8;
+        }
+    }
+}
+
+/**
+ * will conceal past errors, and allso drop b frames if needed
+ *
+ */
+void ff_conceal_past_errors(MpegEncContext *s, int unknown_pos)
+{
+    int mb_x= s->mb_x;
+    int mb_y= s->mb_y;
+    int mb_dist=0;
+    int i, intra_count=0, inter_count=0;
+    int intra_conceal= s->msmpeg4_version ? 50 : 50; //FIXME finetune
+    int inter_conceal= s->msmpeg4_version ? 50 : 50;
+    
+    // for last block
+    if(mb_x>=s->mb_width)  mb_x= s->mb_width -1;
+    if(mb_y>=s->mb_height) mb_y= s->mb_height-1;
+
+    if(s->decoding_error==0 && unknown_pos){
+        if(s->data_partitioning && s->pict_type!=B_TYPE)
+                s->decoding_error= DECODING_AC_LOST;
+        else
+                s->decoding_error= DECODING_DESYNC;
+    }
+
+    if(s->decoding_error==DECODING_DESYNC && s->pict_type!=B_TYPE) s->next_p_frame_damaged=1;
+
+    for(i=mb_x + mb_y*s->mb_width; i>=0; i--){
+        if(s->mbintra_table[i]) intra_count++;
+        else                    inter_count++;
+    }
+    
+    if(s->decoding_error==DECODING_AC_LOST){
+        intra_conceal*=2;
+        inter_conceal*=2;
+    }else if(s->decoding_error==DECODING_ACDC_LOST){
+        intra_conceal*=2;
+        inter_conceal*=2;
+    }
+
+    if(unknown_pos && (intra_count<inter_count)){
+        intra_conceal= inter_conceal= s->mb_num; 
+//        printf("%d %d\n",intra_count, inter_count);
+    }
+
+    fprintf(stderr, "concealing errors\n");
+
+    /* for all MBs from the current one back until the last resync marker */
+    for(; mb_y>=0 && mb_y>=s->resync_mb_y; mb_y--){
+        for(; mb_x>=0; mb_x--){
+            uint8_t *dest_y  = s->current_picture[0] + (mb_y * 16*  s->linesize      ) + mb_x * 16;
+            uint8_t *dest_cb = s->current_picture[1] + (mb_y * 8 * (s->uvlinesize)) + mb_x * 8;
+            uint8_t *dest_cr = s->current_picture[2] + (mb_y * 8 * (s->uvlinesize)) + mb_x * 8;
+            int mb_x_backup= s->mb_x; //FIXME pass xy to mpeg_motion
+            int mb_y_backup= s->mb_y;
+            s->mb_x=mb_x;
+            s->mb_y=mb_y;
+            if(s->mbintra_table[mb_y*s->mb_width + mb_x] && mb_dist<intra_conceal){
+                if(s->decoding_error==DECODING_AC_LOST){
+                    remove_ac(s, dest_y, dest_cb, dest_cr, mb_x, mb_y);
+//                    printf("remove ac to %d %d\n", mb_x, mb_y);
+                }else{
+                    mpeg_motion(s, dest_y, dest_cb, dest_cr, 0, 
+                                s->last_picture, 0, 0, put_pixels_tab,
+                                0/*mx*/, 0/*my*/, 16);
+                }
+            }
+            else if(!s->mbintra_table[mb_y*s->mb_width + mb_x] && mb_dist<inter_conceal){
+                int mx=0;
+                int my=0;
+
+                if(s->decoding_error!=DECODING_DESYNC){
+                    int xy= mb_x*2+1 + (mb_y*2+1)*(s->mb_width*2+2);
+                    mx= s->motion_val[ xy ][0];
+                    my= s->motion_val[ xy ][1];
+                }
+
+                mpeg_motion(s, dest_y, dest_cb, dest_cr, 0, 
+                            s->last_picture, 0, 0, put_pixels_tab,
+                            mx, my, 16);
+            }
+            s->mb_x= mb_x_backup;
+            s->mb_y= mb_y_backup;
+
+            if(mb_x== s->resync_mb_x && mb_y== s->resync_mb_y) return;
+            if(!s->mbskip_table[mb_x + mb_y*s->mb_width]) mb_dist++;
+        }
+        mb_x=s->mb_width-1;
+    }
+}
+
 AVCodec mpeg1video_encoder = {
     "mpeg1video",
     CODEC_TYPE_VIDEO,
@@ -2336,3 +2828,23 @@ AVCodec msmpeg4v3_encoder = {
     MPV_encode_picture,
     MPV_encode_end,
 };
+
+AVCodec wmv1_encoder = {
+    "wmv1",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_WMV1,
+    sizeof(MpegEncContext),
+    MPV_encode_init,
+    MPV_encode_picture,
+    MPV_encode_end,
+};
+
+AVCodec wmv2_encoder = {
+    "wmv2",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_WMV2,
+    sizeof(MpegEncContext),
+    MPV_encode_init,
+    MPV_encode_picture,
+    MPV_encode_end,
+};