Pass AACAC3ParseContext to sync() instead of individual arguments. Patch by
[ffmpeg.git] / libavcodec / mpegvideo.c
index ae527d4..7f3b907 100644 (file)
@@ -3,6 +3,8 @@
  * Copyright (c) 2000,2001 Fabrice Bellard.
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
+ * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,8 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * 4MV & hq & b-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
  */
 
 /**
 #include "avcodec.h"
 #include "dsputil.h"
 #include "mpegvideo.h"
+#include "mpegvideo_common.h"
+#include "mjpegenc.h"
+#include "msmpeg4.h"
 #include "faandct.h"
 #include <limits.h>
 
-#ifdef USE_FASTMEMCPY
-#include "libvo/fastmemcpy.h"
-#endif
-
 //#undef NDEBUG
 //#include <assert.h>
 
-#ifdef CONFIG_ENCODERS
-static int encode_picture(MpegEncContext *s, int picture_number);
-#endif //CONFIG_ENCODERS
 static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
                                    DCTELEM *block, int n, int qscale);
 static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
@@ -57,22 +53,10 @@ static void dct_unquantize_h263_intra_c(MpegEncContext *s,
                                   DCTELEM *block, int n, int qscale);
 static void dct_unquantize_h263_inter_c(MpegEncContext *s,
                                   DCTELEM *block, int n, int qscale);
-static void draw_edges_c(uint8_t *buf, int wrap, int width, int height, int w);
-#ifdef CONFIG_ENCODERS
-static int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
-static int dct_quantize_trellis_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
-static int dct_quantize_refine(MpegEncContext *s, DCTELEM *block, int16_t *weight, DCTELEM *orig, int n, int qscale);
-static int sse_mb(MpegEncContext *s);
-static void  denoise_dct_c(MpegEncContext *s, DCTELEM *block);
-#endif //CONFIG_ENCODERS
 
-#ifdef HAVE_XVMC
 extern int  XVMC_field_start(MpegEncContext*s, AVCodecContext *avctx);
 extern void XVMC_field_end(MpegEncContext *s);
 extern void XVMC_decode_mb(MpegEncContext *s);
-#endif
-
-void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w)= draw_edges_c;
 
 
 /* enable all paranoid tests for rounding, overflows, etc... */
@@ -81,156 +65,19 @@ void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w)= draw_e
 //#define DEBUG
 
 
-/* for jpeg fast DCT */
-#define CONST_BITS 14
-
-static const uint16_t aanscales[64] = {
-    /* precomputed values scaled up by 14 bits */
-    16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
-    22725, 31521, 29692, 26722, 22725, 17855, 12299,  6270,
-    21407, 29692, 27969, 25172, 21407, 16819, 11585,  5906,
-    19266, 26722, 25172, 22654, 19266, 15137, 10426,  5315,
-    16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
-    12873, 17855, 16819, 15137, 12873, 10114,  6967,  3552,
-    8867 , 12299, 11585, 10426,  8867,  6967,  4799,  2446,
-    4520 ,  6270,  5906,  5315,  4520,  3552,  2446,  1247
-};
-
-static const uint8_t h263_chroma_roundtab[16] = {
-//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
-    0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
-};
-
 static const uint8_t ff_default_chroma_qscale_table[32]={
 //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
     0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31
 };
 
-#ifdef CONFIG_ENCODERS
-static uint8_t (*default_mv_penalty)[MAX_MV*2+1]=NULL;
-static uint8_t default_fcode_tab[MAX_MV*2+1];
-
-enum PixelFormat ff_yuv420p_list[2]= {PIX_FMT_YUV420P, -1};
-
-static void convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
-                           const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra)
-{
-    int qscale;
-    int shift=0;
-
-    for(qscale=qmin; qscale<=qmax; qscale++){
-        int i;
-        if (dsp->fdct == ff_jpeg_fdct_islow
-#ifdef FAAN_POSTSCALE
-            || dsp->fdct == ff_faandct
-#endif
-            ) {
-            for(i=0;i<64;i++) {
-                const int j= dsp->idct_permutation[i];
-                /* 16 <= qscale * quant_matrix[i] <= 7905 */
-                /* 19952         <= aanscales[i] * qscale * quant_matrix[i]           <= 249205026 */
-                /* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
-                /* 3444240       >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
-
-                qmat[qscale][i] = (int)((uint64_t_C(1) << QMAT_SHIFT) /
-                                (qscale * quant_matrix[j]));
-            }
-        } else if (dsp->fdct == fdct_ifast
-#ifndef FAAN_POSTSCALE
-                   || dsp->fdct == ff_faandct
-#endif
-                   ) {
-            for(i=0;i<64;i++) {
-                const int j= dsp->idct_permutation[i];
-                /* 16 <= qscale * quant_matrix[i] <= 7905 */
-                /* 19952         <= aanscales[i] * qscale * quant_matrix[i]           <= 249205026 */
-                /* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
-                /* 3444240       >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
-
-                qmat[qscale][i] = (int)((uint64_t_C(1) << (QMAT_SHIFT + 14)) /
-                                (aanscales[i] * qscale * quant_matrix[j]));
-            }
-        } else {
-            for(i=0;i<64;i++) {
-                const int j= dsp->idct_permutation[i];
-                /* We can safely suppose that 16 <= quant_matrix[i] <= 255
-                   So 16           <= qscale * quant_matrix[i]             <= 7905
-                   so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
-                   so 32768        >= (1<<19) / (qscale * quant_matrix[i]) >= 67
-                */
-                qmat[qscale][i] = (int)((uint64_t_C(1) << QMAT_SHIFT) / (qscale * quant_matrix[j]));
-//                qmat  [qscale][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
-                qmat16[qscale][0][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[j]);
-
-                if(qmat16[qscale][0][i]==0 || qmat16[qscale][0][i]==128*256) qmat16[qscale][0][i]=128*256-1;
-                qmat16[qscale][1][i]= ROUNDED_DIV(bias<<(16-QUANT_BIAS_SHIFT), qmat16[qscale][0][i]);
-            }
-        }
-
-        for(i=intra; i<64; i++){
-            int64_t max= 8191;
-            if (dsp->fdct == fdct_ifast
-#ifndef FAAN_POSTSCALE
-                   || dsp->fdct == ff_faandct
-#endif
-                   ) {
-                max= (8191LL*aanscales[i]) >> 14;
-            }
-            while(((max * qmat[qscale][i]) >> shift) > INT_MAX){
-                shift++;
-            }
-        }
-    }
-    if(shift){
-        av_log(NULL, AV_LOG_INFO, "Warning, QMAT_SHIFT is larger then %d, overflows possible\n", QMAT_SHIFT - shift);
-    }
-}
-
-static inline void update_qscale(MpegEncContext *s){
-    s->qscale= (s->lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
-    s->qscale= clip(s->qscale, s->avctx->qmin, s->avctx->qmax);
-
-    s->lambda2= (s->lambda*s->lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
-}
-#endif //CONFIG_ENCODERS
-
-void ff_init_scantable(uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable){
-    int i;
-    int end;
-
-    st->scantable= src_scantable;
-
-    for(i=0; i<64; i++){
-        int j;
-        j = src_scantable[i];
-        st->permutated[i] = permutation[j];
-#ifdef ARCH_POWERPC
-        st->inverse[j] = i;
-#endif
-    }
-
-    end=-1;
-    for(i=0; i<64; i++){
-        int j;
-        j = st->permutated[i];
-        if(j>end) end=j;
-        st->raster_end[i]= end;
-    }
-}
-
-#ifdef CONFIG_ENCODERS
-void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix){
-    int i;
+const uint8_t ff_mpeg1_dc_scale_table[128]={
+//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+};
 
-    if(matrix){
-        put_bits(pb, 1, 1);
-        for(i=0;i<64;i++) {
-            put_bits(pb, 8, matrix[ ff_zigzag_direct[i] ]);
-        }
-    }else
-        put_bits(pb, 1, 0);
-}
-#endif //CONFIG_ENCODERS
 
 const uint8_t *ff_find_start_code(const uint8_t * restrict p, const uint8_t *end, uint32_t * restrict state){
     int i;
@@ -257,13 +104,13 @@ const uint8_t *ff_find_start_code(const uint8_t * restrict p, const uint8_t *end
     }
 
     p= FFMIN(p, end)-4;
-    *state=  be2me_32(unaligned32(p));
+    *state= AV_RB32(p);
 
     return p+4;
 }
 
 /* init common dct for both encoder and decoder */
-int DCT_common_init(MpegEncContext *s)
+int ff_dct_common_init(MpegEncContext *s)
 {
     s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_c;
     s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_c;
@@ -274,38 +121,21 @@ int DCT_common_init(MpegEncContext *s)
         s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_bitexact;
     s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_c;
 
-#ifdef CONFIG_ENCODERS
-    s->dct_quantize= dct_quantize_c;
-    s->denoise_dct= denoise_dct_c;
-#endif //CONFIG_ENCODERS
-
-#ifdef HAVE_MMX
+#if defined(HAVE_MMX)
     MPV_common_init_mmx(s);
-#endif
-#ifdef ARCH_ALPHA
+#elif defined(ARCH_ALPHA)
     MPV_common_init_axp(s);
-#endif
-#ifdef HAVE_MLIB
+#elif defined(HAVE_MLIB)
     MPV_common_init_mlib(s);
-#endif
-#ifdef HAVE_MMI
+#elif defined(HAVE_MMI)
     MPV_common_init_mmi(s);
-#endif
-#ifdef ARCH_ARMV4L
+#elif defined(ARCH_ARMV4L)
     MPV_common_init_armv4l(s);
+#elif defined(HAVE_ALTIVEC)
+    MPV_common_init_altivec(s);
+#elif defined(ARCH_BFIN)
+    MPV_common_init_bfin(s);
 #endif
-#ifdef ARCH_POWERPC
-    MPV_common_init_ppc(s);
-#endif
-
-#ifdef CONFIG_ENCODERS
-    s->fast_dct_quantize= s->dct_quantize;
-
-    if(s->flags&CODEC_FLAG_TRELLIS_QUANT){
-        s->dct_quantize= dct_quantize_trellis_c; //move before MPV_common_init_*
-    }
-
-#endif //CONFIG_ENCODERS
 
     /* load & permutate scantables
        note: only wmv uses different ones
@@ -323,70 +153,28 @@ int DCT_common_init(MpegEncContext *s)
     return 0;
 }
 
-static void copy_picture(Picture *dst, Picture *src){
+void copy_picture(Picture *dst, Picture *src){
     *dst = *src;
     dst->type= FF_BUFFER_TYPE_COPY;
 }
 
-#ifdef CONFIG_ENCODERS
-static void copy_picture_attributes(MpegEncContext *s, AVFrame *dst, AVFrame *src){
-    int i;
-
-    dst->pict_type              = src->pict_type;
-    dst->quality                = src->quality;
-    dst->coded_picture_number   = src->coded_picture_number;
-    dst->display_picture_number = src->display_picture_number;
-//    dst->reference              = src->reference;
-    dst->pts                    = src->pts;
-    dst->interlaced_frame       = src->interlaced_frame;
-    dst->top_field_first        = src->top_field_first;
-
-    if(s->avctx->me_threshold){
-        if(!src->motion_val[0])
-            av_log(s->avctx, AV_LOG_ERROR, "AVFrame.motion_val not set!\n");
-        if(!src->mb_type)
-            av_log(s->avctx, AV_LOG_ERROR, "AVFrame.mb_type not set!\n");
-        if(!src->ref_index[0])
-            av_log(s->avctx, AV_LOG_ERROR, "AVFrame.ref_index not set!\n");
-        if(src->motion_subsample_log2 != dst->motion_subsample_log2)
-            av_log(s->avctx, AV_LOG_ERROR, "AVFrame.motion_subsample_log2 doesn't match! (%d!=%d)\n",
-            src->motion_subsample_log2, dst->motion_subsample_log2);
-
-        memcpy(dst->mb_type, src->mb_type, s->mb_stride * s->mb_height * sizeof(dst->mb_type[0]));
-
-        for(i=0; i<2; i++){
-            int stride= ((16*s->mb_width )>>src->motion_subsample_log2) + 1;
-            int height= ((16*s->mb_height)>>src->motion_subsample_log2);
-
-            if(src->motion_val[i] && src->motion_val[i] != dst->motion_val[i]){
-                memcpy(dst->motion_val[i], src->motion_val[i], 2*stride*height*sizeof(int16_t));
-            }
-            if(src->ref_index[i] && src->ref_index[i] != dst->ref_index[i]){
-                memcpy(dst->ref_index[i], src->ref_index[i], s->b8_stride*2*s->mb_height*sizeof(int8_t));
-            }
-        }
-    }
-}
-#endif
-
 /**
  * allocates a Picture
  * The pixels are allocated/set by calling get_buffer() if shared=0
  */
-static int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
-    const int big_mb_num= s->mb_stride*(s->mb_height+1) + 1; //the +1 is needed so memset(,,stride*height) doesnt sig11
+int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
+    const int big_mb_num= s->mb_stride*(s->mb_height+1) + 1; //the +1 is needed so memset(,,stride*height) does not sig11
     const int mb_array_size= s->mb_stride*s->mb_height;
     const int b8_array_size= s->b8_stride*s->mb_height*2;
     const int b4_array_size= s->b4_stride*s->mb_height*4;
     int i;
+    int r= -1;
 
     if(shared){
         assert(pic->data[0]);
         assert(pic->type == 0 || pic->type == FF_BUFFER_TYPE_SHARED);
         pic->type= FF_BUFFER_TYPE_SHARED;
     }else{
-        int r;
-
         assert(!pic->data[0]);
 
         r= s->avctx->get_buffer(s->avctx, (AVFrame*)pic);
@@ -398,11 +186,13 @@ static int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
 
         if(s->linesize && (s->linesize != pic->linesize[0] || s->uvlinesize != pic->linesize[1])){
             av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (stride changed)\n");
+            s->avctx->release_buffer(s->avctx, (AVFrame*)pic);
             return -1;
         }
 
         if(pic->linesize[1] != pic->linesize[2]){
             av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (uv stride mismatch)\n");
+            s->avctx->release_buffer(s->avctx, (AVFrame*)pic);
             return -1;
         }
 
@@ -419,8 +209,8 @@ static int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
 
         CHECKED_ALLOCZ(pic->mbskip_table , mb_array_size * sizeof(uint8_t)+2) //the +2 is for the slice end check
         CHECKED_ALLOCZ(pic->qscale_table , mb_array_size * sizeof(uint8_t))
-        CHECKED_ALLOCZ(pic->mb_type_base , big_mb_num    * sizeof(uint32_t))
-        pic->mb_type= pic->mb_type_base + s->mb_stride+1;
+        CHECKED_ALLOCZ(pic->mb_type_base , (big_mb_num + s->mb_stride) * sizeof(uint32_t))
+        pic->mb_type= pic->mb_type_base + 2*s->mb_stride+1;
         if(s->out_format == FMT_H264){
             for(i=0; i<2; i++){
                 CHECKED_ALLOCZ(pic->motion_val_base[i], 2 * (b4_array_size+4)  * sizeof(int16_t))
@@ -443,14 +233,17 @@ static int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
         CHECKED_ALLOCZ(pic->pan_scan , 1 * sizeof(AVPanScan))
     }
 
-    //it might be nicer if the application would keep track of these but it would require a API change
+    /* It might be nicer if the application would keep track of these
+     * but it would require an API change. */
     memmove(s->prev_pict_types+1, s->prev_pict_types, PREV_PICT_TYPES_BUFFER_SIZE-1);
     s->prev_pict_types[0]= s->pict_type;
-    if(pic->age < PREV_PICT_TYPES_BUFFER_SIZE && s->prev_pict_types[pic->age] == B_TYPE)
-        pic->age= INT_MAX; // skipped MBs in b frames are quite rare in mpeg1/2 and its a bit tricky to skip them anyway
+    if(pic->age < PREV_PICT_TYPES_BUFFER_SIZE && s->prev_pict_types[pic->age] == FF_B_TYPE)
+        pic->age= INT_MAX; // Skipped MBs in B-frames are quite rare in MPEG-1/2 and it is a bit tricky to skip them anyway.
 
     return 0;
 fail: //for the CHECKED_ALLOCZ macro
+    if(r>=0)
+        s->avctx->release_buffer(s->avctx, (AVFrame*)pic);
     return -1;
 }
 
@@ -494,7 +287,7 @@ static int init_duplicate_context(MpegEncContext *s, MpegEncContext *base){
     CHECKED_ALLOCZ(s->allocated_edge_emu_buffer, (s->width+64)*2*21*2); //(width + edge + align)*interlaced*MBsize*tolerance
     s->edge_emu_buffer= s->allocated_edge_emu_buffer + (s->width+64)*2*21;
 
-     //FIXME should be linesize instead of s->width*2 but that isnt known before get_buffer()
+     //FIXME should be linesize instead of s->width*2 but that is not known before get_buffer()
     CHECKED_ALLOCZ(s->me.scratchpad,  (s->width+64)*4*16*2*sizeof(uint8_t))
     s->rd_scratchpad=   s->me.scratchpad;
     s->b_scratchpad=    s->me.scratchpad;
@@ -569,30 +362,11 @@ void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src){
 //STOP_TIMER("update_duplicate_context") //about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads
 }
 
-#ifdef CONFIG_ENCODERS
-static void update_duplicate_context_after_me(MpegEncContext *dst, MpegEncContext *src){
-#define COPY(a) dst->a= src->a
-    COPY(pict_type);
-    COPY(current_picture);
-    COPY(f_code);
-    COPY(b_code);
-    COPY(qscale);
-    COPY(lambda);
-    COPY(lambda2);
-    COPY(picture_in_gop_number);
-    COPY(gop_picture_number);
-    COPY(frame_pred_frame_dct); //FIXME don't set in encode_header
-    COPY(progressive_frame); //FIXME don't set in encode_header
-    COPY(partitioned_frame); //FIXME don't set in encode_header
-#undef COPY
-}
-#endif
-
 /**
  * sets the given MpegEncContext to common defaults (same for encoding and decoding).
  * the changed fields will not depend upon the prior state of the MpegEncContext.
  */
-static void MPV_common_defaults(MpegEncContext *s){
+void MPV_common_defaults(MpegEncContext *s){
     s->y_dc_scale_table=
     s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
     s->chroma_qscale_table= ff_default_chroma_qscale_table;
@@ -618,40 +392,13 @@ void MPV_decode_defaults(MpegEncContext *s){
     MPV_common_defaults(s);
 }
 
-/**
- * sets the given MpegEncContext to defaults for encoding.
- * the changed fields will not depend upon the prior state of the MpegEncContext.
- */
-
-#ifdef CONFIG_ENCODERS
-static void MPV_encode_defaults(MpegEncContext *s){
-    static int done=0;
-
-    MPV_common_defaults(s);
-
-    if(!done){
-        int i;
-        done=1;
-
-        default_mv_penalty= av_mallocz( sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1) );
-        memset(default_fcode_tab , 0, sizeof(uint8_t)*(2*MAX_MV+1));
-
-        for(i=-16; i<16; i++){
-            default_fcode_tab[i + MAX_MV]= 1;
-        }
-    }
-    s->me.mv_penalty= default_mv_penalty;
-    s->fcode_tab= default_fcode_tab;
-}
-#endif //CONFIG_ENCODERS
-
 /**
  * init common structure for both encoder and decoder.
  * this assumes that some variables like width/height are already set
  */
 int MPV_common_init(MpegEncContext *s)
 {
-    int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
+    int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y, threads;
 
     s->mb_height = (s->height + 15) / 16;
 
@@ -664,7 +411,7 @@ int MPV_common_init(MpegEncContext *s)
         return -1;
 
     dsputil_init(&s->dsp, s->avctx);
-    DCT_common_init(s);
+    ff_dct_common_init(s);
 
     s->flags= s->avctx->flags;
     s->flags2= s->avctx->flags2;
@@ -820,12 +567,14 @@ int MPV_common_init(MpegEncContext *s)
     s->context_initialized = 1;
 
     s->thread_context[0]= s;
-    for(i=1; i<s->avctx->thread_count; i++){
+    threads = s->avctx->thread_count;
+
+    for(i=1; i<threads; i++){
         s->thread_context[i]= av_malloc(sizeof(MpegEncContext));
         memcpy(s->thread_context[i], s, sizeof(MpegEncContext));
     }
 
-    for(i=0; i<s->avctx->thread_count; i++){
+    for(i=0; i<threads; i++){
         if(init_duplicate_context(s->thread_context[i], s) < 0)
            goto fail;
         s->thread_context[i]->start_mb_y= (s->mb_height*(i  ) + s->avctx->thread_count/2) / s->avctx->thread_count;
@@ -922,498 +671,14 @@ void MPV_common_end(MpegEncContext *s)
     avcodec_default_free_buffers(s->avctx);
 }
 
-#ifdef CONFIG_ENCODERS
-
-/* init video encoder */
-int MPV_encode_init(AVCodecContext *avctx)
-{
-    MpegEncContext *s = avctx->priv_data;
-    int i;
-    int chroma_h_shift, chroma_v_shift;
-
-    MPV_encode_defaults(s);
-
-    switch (avctx->codec_id) {
-    case CODEC_ID_MPEG2VIDEO:
-        if(avctx->pix_fmt != PIX_FMT_YUV420P && avctx->pix_fmt != PIX_FMT_YUV422P){
-            av_log(avctx, AV_LOG_ERROR, "only YUV420 and YUV422 are supported\n");
-            return -1;
-        }
-        break;
-    case CODEC_ID_LJPEG:
-    case CODEC_ID_MJPEG:
-        if(avctx->pix_fmt != PIX_FMT_YUVJ420P && avctx->pix_fmt != PIX_FMT_YUVJ422P &&
-           ((avctx->pix_fmt != PIX_FMT_YUV420P && avctx->pix_fmt != PIX_FMT_YUV422P) || avctx->strict_std_compliance>FF_COMPLIANCE_INOFFICIAL)){
-            av_log(avctx, AV_LOG_ERROR, "colorspace not supported in jpeg\n");
-            return -1;
-        }
-        break;
-    default:
-        if(avctx->pix_fmt != PIX_FMT_YUV420P){
-            av_log(avctx, AV_LOG_ERROR, "only YUV420 is supported\n");
-            return -1;
-        }
-    }
-
-    switch (avctx->pix_fmt) {
-    case PIX_FMT_YUVJ422P:
-    case PIX_FMT_YUV422P:
-        s->chroma_format = CHROMA_422;
-        break;
-    case PIX_FMT_YUVJ420P:
-    case PIX_FMT_YUV420P:
-    default:
-        s->chroma_format = CHROMA_420;
-        break;
-    }
-
-    s->bit_rate = avctx->bit_rate;
-    s->width = avctx->width;
-    s->height = avctx->height;
-    if(avctx->gop_size > 600 && avctx->strict_std_compliance>FF_COMPLIANCE_EXPERIMENTAL){
-        av_log(avctx, AV_LOG_ERROR, "Warning keyframe interval too large! reducing it ...\n");
-        avctx->gop_size=600;
-    }
-    s->gop_size = avctx->gop_size;
-    s->avctx = avctx;
-    s->flags= avctx->flags;
-    s->flags2= avctx->flags2;
-    s->max_b_frames= avctx->max_b_frames;
-    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;
-    s->quarter_sample= (avctx->flags & CODEC_FLAG_QPEL)!=0;
-    s->mpeg_quant= avctx->mpeg_quant;
-    s->rtp_mode= !!avctx->rtp_payload_size;
-    s->intra_dc_precision= avctx->intra_dc_precision;
-    s->user_specified_pts = AV_NOPTS_VALUE;
-
-    if (s->gop_size <= 1) {
-        s->intra_only = 1;
-        s->gop_size = 12;
-    } else {
-        s->intra_only = 0;
-    }
-
-    s->me_method = avctx->me_method;
-
-    /* Fixed QSCALE */
-    s->fixed_qscale = !!(avctx->flags & CODEC_FLAG_QSCALE);
-
-    s->adaptive_quant= (   s->avctx->lumi_masking
-                        || s->avctx->dark_masking
-                        || s->avctx->temporal_cplx_masking
-                        || s->avctx->spatial_cplx_masking
-                        || s->avctx->p_masking
-                        || s->avctx->border_masking
-                        || (s->flags&CODEC_FLAG_QP_RD))
-                       && !s->fixed_qscale;
-
-    s->obmc= !!(s->flags & CODEC_FLAG_OBMC);
-    s->loop_filter= !!(s->flags & CODEC_FLAG_LOOP_FILTER);
-    s->alternate_scan= !!(s->flags & CODEC_FLAG_ALT_SCAN);
-    s->intra_vlc_format= !!(s->flags2 & CODEC_FLAG2_INTRA_VLC);
-
-    if(avctx->rc_max_rate && !avctx->rc_buffer_size){
-        av_log(avctx, AV_LOG_ERROR, "a vbv buffer size is needed, for encoding with a maximum bitrate\n");
-        return -1;
-    }
-
-    if(avctx->rc_min_rate && avctx->rc_max_rate != avctx->rc_min_rate){
-        av_log(avctx, AV_LOG_INFO, "Warning min_rate > 0 but min_rate != max_rate isn't recommended!\n");
-    }
-
-    if(avctx->rc_min_rate && avctx->rc_min_rate > avctx->bit_rate){
-        av_log(avctx, AV_LOG_INFO, "bitrate below min bitrate\n");
-        return -1;
-    }
-
-    if(avctx->rc_max_rate && avctx->rc_max_rate < avctx->bit_rate){
-        av_log(avctx, AV_LOG_INFO, "bitrate above max bitrate\n");
-        return -1;
-    }
-
-    if(   s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate
-       && (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO)
-       && 90000LL * (avctx->rc_buffer_size-1) > s->avctx->rc_max_rate*0xFFFFLL){
-
-        av_log(avctx, AV_LOG_INFO, "Warning vbv_delay will be set to 0xFFFF (=VBR) as the specified vbv buffer is too large for the given bitrate!\n");
-    }
-
-    if((s->flags & CODEC_FLAG_4MV) && s->codec_id != CODEC_ID_MPEG4
-       && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P && s->codec_id != CODEC_ID_FLV1){
-        av_log(avctx, AV_LOG_ERROR, "4MV not supported by codec\n");
-        return -1;
-    }
-
-    if(s->obmc && s->avctx->mb_decision != FF_MB_DECISION_SIMPLE){
-        av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with simple mb decision\n");
-        return -1;
-    }
-
-    if(s->obmc && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P){
-        av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with H263(+)\n");
-        return -1;
-    }
-
-    if(s->quarter_sample && s->codec_id != CODEC_ID_MPEG4){
-        av_log(avctx, AV_LOG_ERROR, "qpel not supported by codec\n");
-        return -1;
-    }
-
-    if(s->data_partitioning && s->codec_id != CODEC_ID_MPEG4){
-        av_log(avctx, AV_LOG_ERROR, "data partitioning not supported by codec\n");
-        return -1;
-    }
-
-    if(s->max_b_frames && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO){
-        av_log(avctx, AV_LOG_ERROR, "b frames not supported by codec\n");
-        return -1;
-    }
-
-    if((s->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME|CODEC_FLAG_ALT_SCAN))
-       && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG2VIDEO){
-        av_log(avctx, AV_LOG_ERROR, "interlacing not supported by codec\n");
-        return -1;
-    }
-
-    if(s->mpeg_quant && s->codec_id != CODEC_ID_MPEG4){ //FIXME mpeg2 uses that too
-        av_log(avctx, AV_LOG_ERROR, "mpeg2 style quantization not supported by codec\n");
-        return -1;
-    }
-
-    if((s->flags & CODEC_FLAG_CBP_RD) && !(s->flags & CODEC_FLAG_TRELLIS_QUANT)){
-        av_log(avctx, AV_LOG_ERROR, "CBP RD needs trellis quant\n");
-        return -1;
-    }
-
-    if((s->flags & CODEC_FLAG_QP_RD) && s->avctx->mb_decision != FF_MB_DECISION_RD){
-        av_log(avctx, AV_LOG_ERROR, "QP RD needs mbd=2\n");
-        return -1;
-    }
-
-    if(s->avctx->scenechange_threshold < 1000000000 && (s->flags & CODEC_FLAG_CLOSED_GOP)){
-        av_log(avctx, AV_LOG_ERROR, "closed gop with scene change detection arent supported yet\n");
-        return -1;
-    }
-
-    if((s->flags2 & CODEC_FLAG2_INTRA_VLC) && s->codec_id != CODEC_ID_MPEG2VIDEO){
-        av_log(avctx, AV_LOG_ERROR, "intra vlc table not supported by codec\n");
-        return -1;
-    }
-
-    if(s->flags & CODEC_FLAG_LOW_DELAY){
-        if (s->codec_id != CODEC_ID_MPEG2VIDEO && s->codec_id != CODEC_ID_MPEG1VIDEO){
-            av_log(avctx, AV_LOG_ERROR, "low delay forcing is only available for mpeg1/2\n");
-            return -1;
-        }
-        if (s->max_b_frames != 0){
-            av_log(avctx, AV_LOG_ERROR, "b frames cannot be used with low delay\n");
-            return -1;
-        }
-    }
-
-    if(s->avctx->thread_count > 1 && s->codec_id != CODEC_ID_MPEG4
-       && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO
-       && (s->codec_id != CODEC_ID_H263P || !(s->flags & CODEC_FLAG_H263P_SLICE_STRUCT))){
-        av_log(avctx, AV_LOG_ERROR, "multi threaded encoding not supported by codec\n");
-        return -1;
-    }
-
-    if(s->avctx->thread_count > 1)
-        s->rtp_mode= 1;
-
-    if(!avctx->time_base.den || !avctx->time_base.num){
-        av_log(avctx, AV_LOG_ERROR, "framerate not set\n");
-        return -1;
-    }
-
-    i= (INT_MAX/2+128)>>8;
-    if(avctx->me_threshold >= i){
-        av_log(avctx, AV_LOG_ERROR, "me_threshold too large, max is %d\n", i - 1);
-        return -1;
-    }
-    if(avctx->mb_threshold >= i){
-        av_log(avctx, AV_LOG_ERROR, "mb_threshold too large, max is %d\n", i - 1);
-        return -1;
-    }
-
-    if(avctx->b_frame_strategy && (avctx->flags&CODEC_FLAG_PASS2)){
-        av_log(avctx, AV_LOG_INFO, "notice: b_frame_strategy only affects the first pass\n");
-        avctx->b_frame_strategy = 0;
-    }
-
-    i= ff_gcd(avctx->time_base.den, avctx->time_base.num);
-    if(i > 1){
-        av_log(avctx, AV_LOG_INFO, "removing common factors from framerate\n");
-        avctx->time_base.den /= i;
-        avctx->time_base.num /= i;
-//        return -1;
-    }
-
-    if(s->codec_id==CODEC_ID_MJPEG){
-        s->intra_quant_bias= 1<<(QUANT_BIAS_SHIFT-1); //(a + x/2)/x
-        s->inter_quant_bias= 0;
-    }else if(s->mpeg_quant || s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO){
-        s->intra_quant_bias= 3<<(QUANT_BIAS_SHIFT-3); //(a + x*3/8)/x
-        s->inter_quant_bias= 0;
-    }else{
-        s->intra_quant_bias=0;
-        s->inter_quant_bias=-(1<<(QUANT_BIAS_SHIFT-2)); //(a - x/4)/x
-    }
-
-    if(avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)
-        s->intra_quant_bias= avctx->intra_quant_bias;
-    if(avctx->inter_quant_bias != FF_DEFAULT_QUANT_BIAS)
-        s->inter_quant_bias= avctx->inter_quant_bias;
-
-    avcodec_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift, &chroma_v_shift);
-
-    if(avctx->codec_id == CODEC_ID_MPEG4 && s->avctx->time_base.den > (1<<16)-1){
-        av_log(avctx, AV_LOG_ERROR, "timebase not supported by mpeg 4 standard\n");
-        return -1;
-    }
-    s->time_increment_bits = av_log2(s->avctx->time_base.den - 1) + 1;
-
-    switch(avctx->codec->id) {
-    case CODEC_ID_MPEG1VIDEO:
-        s->out_format = FMT_MPEG1;
-        s->low_delay= !!(s->flags & CODEC_FLAG_LOW_DELAY);
-        avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
-        break;
-    case CODEC_ID_MPEG2VIDEO:
-        s->out_format = FMT_MPEG1;
-        s->low_delay= !!(s->flags & CODEC_FLAG_LOW_DELAY);
-        avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
-        s->rtp_mode= 1;
-        break;
-    case CODEC_ID_LJPEG:
-    case CODEC_ID_JPEGLS:
-    case CODEC_ID_MJPEG:
-        s->out_format = FMT_MJPEG;
-        s->intra_only = 1; /* force intra only for jpeg */
-        s->mjpeg_write_tables = avctx->codec->id != CODEC_ID_JPEGLS;
-        s->mjpeg_data_only_frames = 0; /* write all the needed headers */
-        s->mjpeg_vsample[0] = 2;
-        s->mjpeg_vsample[1] = 2>>chroma_v_shift;
-        s->mjpeg_vsample[2] = 2>>chroma_v_shift;
-        s->mjpeg_hsample[0] = 2;
-        s->mjpeg_hsample[1] = 2>>chroma_h_shift;
-        s->mjpeg_hsample[2] = 2>>chroma_h_shift;
-        if (mjpeg_init(s) < 0)
-            return -1;
-        avctx->delay=0;
-        s->low_delay=1;
-        break;
-    case CODEC_ID_H261:
-        if (ff_h261_get_picture_format(s->width, s->height) < 0) {
-            av_log(avctx, AV_LOG_ERROR, "The specified picture size of %dx%d is not valid for the H.261 codec.\nValid sizes are 176x144, 352x288\n", s->width, s->height);
-            return -1;
-        }
-        s->out_format = FMT_H261;
-        avctx->delay=0;
-        s->low_delay=1;
-        break;
-    case CODEC_ID_H263:
-        if (h263_get_picture_format(s->width, s->height) == 7) {
-            av_log(avctx, AV_LOG_INFO, "The specified picture size of %dx%d is not valid for the H.263 codec.\nValid sizes are 128x96, 176x144, 352x288, 704x576, and 1408x1152. Try H.263+.\n", s->width, s->height);
-            return -1;
-        }
-        s->out_format = FMT_H263;
-        s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
-        avctx->delay=0;
-        s->low_delay=1;
-        break;
-    case CODEC_ID_H263P:
-        s->out_format = FMT_H263;
-        s->h263_plus = 1;
-        /* Fx */
-        s->umvplus = (avctx->flags & CODEC_FLAG_H263P_UMV) ? 1:0;
-        s->h263_aic= (avctx->flags & CODEC_FLAG_H263P_AIC) ? 1:0;
-        s->modified_quant= s->h263_aic;
-        s->alt_inter_vlc= (avctx->flags & CODEC_FLAG_H263P_AIV) ? 1:0;
-        s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
-        s->loop_filter= (avctx->flags & CODEC_FLAG_LOOP_FILTER) ? 1:0;
-        s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
-        s->h263_slice_structured= (s->flags & CODEC_FLAG_H263P_SLICE_STRUCT) ? 1:0;
-
-        /* /Fx */
-        /* These are just to be sure */
-        avctx->delay=0;
-        s->low_delay=1;
-        break;
-    case CODEC_ID_FLV1:
-        s->out_format = FMT_H263;
-        s->h263_flv = 2; /* format = 1; 11-bit codes */
-        s->unrestricted_mv = 1;
-        s->rtp_mode=0; /* don't allow GOB */
-        avctx->delay=0;
-        s->low_delay=1;
-        break;
-    case CODEC_ID_RV10:
-        s->out_format = FMT_H263;
-        avctx->delay=0;
-        s->low_delay=1;
-        break;
-    case CODEC_ID_RV20:
-        s->out_format = FMT_H263;
-        avctx->delay=0;
-        s->low_delay=1;
-        s->modified_quant=1;
-        s->h263_aic=1;
-        s->h263_plus=1;
-        s->loop_filter=1;
-        s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
-        break;
-    case CODEC_ID_MPEG4:
-        s->out_format = FMT_H263;
-        s->h263_pred = 1;
-        s->unrestricted_mv = 1;
-        s->low_delay= s->max_b_frames ? 0 : 1;
-        avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
-        break;
-    case CODEC_ID_MSMPEG4V1:
-        s->out_format = FMT_H263;
-        s->h263_msmpeg4 = 1;
-        s->h263_pred = 1;
-        s->unrestricted_mv = 1;
-        s->msmpeg4_version= 1;
-        avctx->delay=0;
-        s->low_delay=1;
-        break;
-    case CODEC_ID_MSMPEG4V2:
-        s->out_format = FMT_H263;
-        s->h263_msmpeg4 = 1;
-        s->h263_pred = 1;
-        s->unrestricted_mv = 1;
-        s->msmpeg4_version= 2;
-        avctx->delay=0;
-        s->low_delay=1;
-        break;
-    case CODEC_ID_MSMPEG4V3:
-        s->out_format = FMT_H263;
-        s->h263_msmpeg4 = 1;
-        s->h263_pred = 1;
-        s->unrestricted_mv = 1;
-        s->msmpeg4_version= 3;
-        s->flipflop_rounding=1;
-        avctx->delay=0;
-        s->low_delay=1;
-        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;
-        s->flipflop_rounding=1;
-        avctx->delay=0;
-        s->low_delay=1;
-        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;
-        s->flipflop_rounding=1;
-        avctx->delay=0;
-        s->low_delay=1;
-        break;
-    default:
-        return -1;
-    }
-
-    avctx->has_b_frames= !s->low_delay;
-
-    s->encoding = 1;
-
-    /* init */
-    if (MPV_common_init(s) < 0)
-        return -1;
-
-    if(s->modified_quant)
-        s->chroma_qscale_table= ff_h263_chroma_qscale_table;
-    s->progressive_frame=
-    s->progressive_sequence= !(avctx->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME|CODEC_FLAG_ALT_SCAN));
-    s->quant_precision=5;
-
-    ff_set_cmp(&s->dsp, s->dsp.ildct_cmp, s->avctx->ildct_cmp);
-    ff_set_cmp(&s->dsp, s->dsp.frame_skip_cmp, s->avctx->frame_skip_cmp);
-
-#ifdef CONFIG_H261_ENCODER
-    if (s->out_format == FMT_H261)
-        ff_h261_encode_init(s);
-#endif
-    if (s->out_format == FMT_H263)
-        h263_encode_init(s);
-    if(s->msmpeg4_version)
-        ff_msmpeg4_encode_init(s);
-    if (s->out_format == FMT_MPEG1)
-        ff_mpeg1_encode_init(s);
-
-    /* init q matrix */
-    for(i=0;i<64;i++) {
-        int j= s->dsp.idct_permutation[i];
-        if(s->codec_id==CODEC_ID_MPEG4 && s->mpeg_quant){
-            s->intra_matrix[j] = ff_mpeg4_default_intra_matrix[i];
-            s->inter_matrix[j] = ff_mpeg4_default_non_intra_matrix[i];
-        }else if(s->out_format == FMT_H263 || s->out_format == FMT_H261){
-            s->intra_matrix[j] =
-            s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
-        }else
-        { /* mpeg1/2 */
-            s->intra_matrix[j] = ff_mpeg1_default_intra_matrix[i];
-            s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
-        }
-        if(s->avctx->intra_matrix)
-            s->intra_matrix[j] = s->avctx->intra_matrix[i];
-        if(s->avctx->inter_matrix)
-            s->inter_matrix[j] = s->avctx->inter_matrix[i];
-    }
-
-    /* precompute matrix */
-    /* for mjpeg, we do include qscale in the matrix */
-    if (s->out_format != FMT_MJPEG) {
-        convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
-                       s->intra_matrix, s->intra_quant_bias, avctx->qmin, 31, 1);
-        convert_matrix(&s->dsp, s->q_inter_matrix, s->q_inter_matrix16,
-                       s->inter_matrix, s->inter_quant_bias, avctx->qmin, 31, 0);
-    }
-
-    if(ff_rate_control_init(s) < 0)
-        return -1;
-
-    return 0;
-}
-
-int MPV_encode_end(AVCodecContext *avctx)
-{
-    MpegEncContext *s = avctx->priv_data;
-
-    ff_rate_control_uninit(s);
-
-    MPV_common_end(s);
-    if (s->out_format == FMT_MJPEG)
-        mjpeg_close(s);
-
-    av_freep(&avctx->extradata);
-
-    return 0;
-}
-
-#endif //CONFIG_ENCODERS
-
-void init_rl(RLTable *rl, int use_static)
+void init_rl(RLTable *rl, uint8_t static_store[2][2*MAX_RUN + MAX_LEVEL + 3])
 {
     int8_t max_level[MAX_RUN+1], max_run[MAX_LEVEL+1];
     uint8_t index_run[MAX_RUN+1];
     int last, run, level, start, end, i;
 
     /* If table is static, we can quit if rl->max_level[0] is not NULL */
-    if(use_static && rl->max_level[0])
+    if(static_store && rl->max_level[0])
         return;
 
     /* compute max_level[], max_run[] and index_run[] */
@@ -1439,50 +704,74 @@ void init_rl(RLTable *rl, int use_static)
             if (run > max_run[level])
                 max_run[level] = run;
         }
-        if(use_static)
-            rl->max_level[last] = av_mallocz_static(MAX_RUN + 1);
+        if(static_store)
+            rl->max_level[last] = static_store[last];
         else
             rl->max_level[last] = av_malloc(MAX_RUN + 1);
         memcpy(rl->max_level[last], max_level, MAX_RUN + 1);
-        if(use_static)
-            rl->max_run[last] = av_mallocz_static(MAX_LEVEL + 1);
+        if(static_store)
+            rl->max_run[last] = static_store[last] + MAX_RUN + 1;
         else
             rl->max_run[last] = av_malloc(MAX_LEVEL + 1);
         memcpy(rl->max_run[last], max_run, MAX_LEVEL + 1);
-        if(use_static)
-            rl->index_run[last] = av_mallocz_static(MAX_RUN + 1);
+        if(static_store)
+            rl->index_run[last] = static_store[last] + MAX_RUN + MAX_LEVEL + 2;
         else
             rl->index_run[last] = av_malloc(MAX_RUN + 1);
         memcpy(rl->index_run[last], index_run, MAX_RUN + 1);
     }
 }
 
-/* draw the edges of width 'w' of an image of size width, height */
-//FIXME check that this is ok for mpeg4 interlaced
-static void draw_edges_c(uint8_t *buf, int wrap, int width, int height, int w)
+void init_vlc_rl(RLTable *rl, int use_static)
 {
-    uint8_t *ptr, *last_line;
-    int i;
+    int i, q;
 
-    last_line = buf + (height - 1) * wrap;
-    for(i=0;i<w;i++) {
-        /* top and bottom */
-        memcpy(buf - (i + 1) * wrap, buf, width);
-        memcpy(last_line + (i + 1) * wrap, last_line, width);
-    }
-    /* left and right */
-    ptr = buf;
-    for(i=0;i<height;i++) {
-        memset(ptr - w, ptr[0], w);
-        memset(ptr + width, ptr[width-1], w);
-        ptr += wrap;
-    }
-    /* corners */
-    for(i=0;i<w;i++) {
-        memset(buf - (i + 1) * wrap - w, buf[0], w); /* top left */
-        memset(buf - (i + 1) * wrap + width, buf[width-1], w); /* top right */
-        memset(last_line + (i + 1) * wrap - w, last_line[0], w); /* top left */
-        memset(last_line + (i + 1) * wrap + width, last_line[width-1], w); /* top right */
+    /* Return if static table is already initialized */
+    if(use_static && rl->rl_vlc[0])
+        return;
+
+    init_vlc(&rl->vlc, 9, rl->n + 1,
+             &rl->table_vlc[0][1], 4, 2,
+             &rl->table_vlc[0][0], 4, 2, use_static);
+
+
+    for(q=0; q<32; q++){
+        int qmul= q*2;
+        int qadd= (q-1)|1;
+
+        if(q==0){
+            qmul=1;
+            qadd=0;
+        }
+        if(use_static)
+            rl->rl_vlc[q]= av_mallocz_static(rl->vlc.table_size*sizeof(RL_VLC_ELEM));
+        else
+            rl->rl_vlc[q]= av_malloc(rl->vlc.table_size*sizeof(RL_VLC_ELEM));
+        for(i=0; i<rl->vlc.table_size; i++){
+            int code= rl->vlc.table[i][0];
+            int len = rl->vlc.table[i][1];
+            int level, run;
+
+            if(len==0){ // illegal code
+                run= 66;
+                level= MAX_LEVEL;
+            }else if(len<0){ //more bits needed
+                run= 0;
+                level= code;
+            }else{
+                if(code==rl->n){ //esc
+                    run= 66;
+                    level= 0;
+                }else{
+                    run=   rl->table_run  [code] + 1;
+                    level= rl->table_level[code] * qmul + qadd;
+                    if(code >= rl->last) run+=192;
+                }
+            }
+            rl->rl_vlc[q][i].len= len;
+            rl->rl_vlc[q][i].level= level;
+            rl->rl_vlc[q][i].run= run;
+        }
     }
 }
 
@@ -1502,7 +791,19 @@ int ff_find_unused_picture(MpegEncContext *s, int shared){
         }
     }
 
-    assert(0);
+    av_log(s->avctx, AV_LOG_FATAL, "Internal error, picture buffer overflow\n");
+    /* We could return -1, but the codec would crash trying to draw into a
+     * non-existing frame anyway. This is safer than waiting for a random crash.
+     * Also the return of this is never useful, an encoder must only allocate
+     * as much as allowed in the specification. This has no relationship to how
+     * much libavcodec could allocate (and MAX_PICTURE_COUNT is always large
+     * enough for such valid streams).
+     * Plus, a decoder has to check stream validity and remove frames if too
+     * many reference frames are around. Waiting for "OOM" is not correct at
+     * all. Similarly, missing reference frames have to be replaced by
+     * interpolated/MC frames, anything else is a bug in the codec ...
+     */
+    abort();
     return -1;
 }
 
@@ -1535,7 +836,8 @@ int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
     assert(s->last_picture_ptr==NULL || s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3);
 
     /* mark&release old frames */
-    if (s->pict_type != B_TYPE && s->last_picture_ptr && s->last_picture_ptr != s->next_picture_ptr && s->last_picture_ptr->data[0]) {
+    if (s->pict_type != FF_B_TYPE && s->last_picture_ptr && s->last_picture_ptr != s->next_picture_ptr && s->last_picture_ptr->data[0]) {
+      if(s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3){
         avctx->release_buffer(avctx, (AVFrame*)s->last_picture_ptr);
 
         /* release forgotten pictures */
@@ -1548,6 +850,7 @@ int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
                 }
             }
         }
+      }
     }
 alloc:
     if(!s->encoding){
@@ -1559,14 +862,19 @@ alloc:
         }
 
         if(s->current_picture_ptr && s->current_picture_ptr->data[0]==NULL)
-            pic= (AVFrame*)s->current_picture_ptr; //we allready have a unused image (maybe it was set before reading the header)
+            pic= (AVFrame*)s->current_picture_ptr; //we already have a unused image (maybe it was set before reading the header)
         else{
             i= ff_find_unused_picture(s, 0);
             pic= (AVFrame*)&s->picture[i];
         }
 
-        pic->reference= (s->pict_type != B_TYPE || s->codec_id == CODEC_ID_H264)
-                        && !s->dropable ? 3 : 0;
+        pic->reference= 0;
+        if (!s->dropable){
+            if (s->codec_id == CODEC_ID_H264)
+                pic->reference = s->picture_structure;
+            else if (s->pict_type != FF_B_TYPE)
+                pic->reference = 3;
+        }
 
         pic->coded_picture_number= s->coded_picture_number++;
 
@@ -1581,12 +889,11 @@ alloc:
     s->current_picture_ptr->pict_type= s->pict_type;
 //    if(s->flags && CODEC_FLAG_QSCALE)
   //      s->current_picture_ptr->quality= s->new_picture_ptr->quality;
-    s->current_picture_ptr->key_frame= s->pict_type == I_TYPE;
+    s->current_picture_ptr->key_frame= s->pict_type == FF_I_TYPE;
 
     copy_picture(&s->current_picture, s->current_picture_ptr);
 
-  if(s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3){
-    if (s->pict_type != B_TYPE) {
+    if (s->pict_type != FF_B_TYPE) {
         s->last_picture_ptr= s->next_picture_ptr;
         if(!s->dropable)
             s->next_picture_ptr= s->current_picture_ptr;
@@ -1600,15 +907,15 @@ alloc:
     if(s->last_picture_ptr) copy_picture(&s->last_picture, s->last_picture_ptr);
     if(s->next_picture_ptr) copy_picture(&s->next_picture, s->next_picture_ptr);
 
-    if(s->pict_type != I_TYPE && (s->last_picture_ptr==NULL || s->last_picture_ptr->data[0]==NULL)){
+    if(s->pict_type != FF_I_TYPE && (s->last_picture_ptr==NULL || s->last_picture_ptr->data[0]==NULL) && !s->dropable){
         av_log(avctx, AV_LOG_ERROR, "warning: first frame is no keyframe\n");
-        assert(s->pict_type != B_TYPE); //these should have been dropped if we don't have a reference
+        assert(s->pict_type != FF_B_TYPE); //these should have been dropped if we don't have a reference
         goto alloc;
     }
 
-    assert(s->pict_type == I_TYPE || (s->last_picture_ptr && s->last_picture_ptr->data[0]));
+    assert(s->pict_type == FF_I_TYPE || (s->last_picture_ptr && s->last_picture_ptr->data[0]));
 
-    if(s->picture_structure!=PICT_FRAME){
+    if(s->picture_structure!=PICT_FRAME && s->out_format != FMT_H264){
         int i;
         for(i=0; i<4; i++){
             if(s->picture_structure == PICT_BOTTOM_FIELD){
@@ -1619,13 +926,12 @@ alloc:
             s->next_picture.linesize[i] *=2;
         }
     }
-  }
 
     s->hurry_up= s->avctx->hurry_up;
     s->error_resilience= avctx->error_resilience;
 
     /* set dequantizer, we can't do it during init as it might change for mpeg4
-       and we can't do it in the header decode as init isnt called for mpeg4 there yet */
+       and we can't do it in the header decode as init is not called for mpeg4 there yet */
     if(s->mpeg_quant || s->codec_id == CODEC_ID_MPEG2VIDEO){
         s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
         s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
@@ -1662,15 +968,15 @@ void MPV_frame_end(MpegEncContext *s)
     }else
 #endif
     if(s->unrestricted_mv && s->current_picture.reference && !s->intra_only && !(s->flags&CODEC_FLAG_EMU_EDGE)) {
-            draw_edges(s->current_picture.data[0], s->linesize  , s->h_edge_pos   , s->v_edge_pos   , EDGE_WIDTH  );
-            draw_edges(s->current_picture.data[1], s->uvlinesize, s->h_edge_pos>>1, s->v_edge_pos>>1, EDGE_WIDTH/2);
-            draw_edges(s->current_picture.data[2], s->uvlinesize, s->h_edge_pos>>1, s->v_edge_pos>>1, EDGE_WIDTH/2);
+            s->dsp.draw_edges(s->current_picture.data[0], s->linesize  , s->h_edge_pos   , s->v_edge_pos   , EDGE_WIDTH  );
+            s->dsp.draw_edges(s->current_picture.data[1], s->uvlinesize, s->h_edge_pos>>1, s->v_edge_pos>>1, EDGE_WIDTH/2);
+            s->dsp.draw_edges(s->current_picture.data[2], s->uvlinesize, s->h_edge_pos>>1, s->v_edge_pos>>1, EDGE_WIDTH/2);
     }
     emms_c();
 
     s->last_pict_type    = s->pict_type;
     s->last_lambda_for[s->pict_type]= s->current_picture_ptr->quality;
-    if(s->pict_type!=B_TYPE){
+    if(s->pict_type!=FF_B_TYPE){
         s->last_non_b_pict_type= s->pict_type;
     }
 #if 0
@@ -1711,10 +1017,10 @@ void MPV_frame_end(MpegEncContext *s)
 static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color){
     int x, y, fr, f;
 
-    sx= clip(sx, 0, w-1);
-    sy= clip(sy, 0, h-1);
-    ex= clip(ex, 0, w-1);
-    ey= clip(ey, 0, h-1);
+    sx= av_clip(sx, 0, w-1);
+    sy= av_clip(sy, 0, h-1);
+    ex= av_clip(ex, 0, w-1);
+    ey= av_clip(ey, 0, h-1);
 
     buf[sy*stride + sx]+= color;
 
@@ -1744,8 +1050,8 @@ static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h
         for(y= 0; y <= ey; y++){
             x = (y*f)>>16;
             fr= (y*f)&0xFFFF;
-            buf[y*stride + x  ]+= (color*(0x10000-fr))>>16;;
-            buf[y*stride + x+1]+= (color*         fr )>>16;;
+            buf[y*stride + x  ]+= (color*(0x10000-fr))>>16;
+            buf[y*stride + x+1]+= (color*         fr )>>16;
         }
     }
 }
@@ -1760,10 +1066,10 @@ static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h
 static void draw_arrow(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color){
     int dx,dy;
 
-    sx= clip(sx, -100, w+100);
-    sy= clip(sy, -100, h+100);
-    ex= clip(ex, -100, w+100);
-    ey= clip(ey, -100, h+100);
+    sx= av_clip(sx, -100, w+100);
+    sy= av_clip(sy, -100, h+100);
+    ex= av_clip(ex, -100, w+100);
+    ey= av_clip(ey, -100, h+100);
 
     dx= ex - sx;
     dy= ey - sy;
@@ -2044,4519 +1350,731 @@ v= (int)(128 + r*sin(theta*3.141592/180));
     }
 }
 
-#ifdef CONFIG_ENCODERS
-
-static int get_sae(uint8_t *src, int ref, int stride){
-    int x,y;
-    int acc=0;
+static inline int hpel_motion_lowres(MpegEncContext *s,
+                                  uint8_t *dest, uint8_t *src,
+                                  int field_based, int field_select,
+                                  int src_x, int src_y,
+                                  int width, int height, int stride,
+                                  int h_edge_pos, int v_edge_pos,
+                                  int w, int h, h264_chroma_mc_func *pix_op,
+                                  int motion_x, int motion_y)
+{
+    const int lowres= s->avctx->lowres;
+    const int s_mask= (2<<lowres)-1;
+    int emu=0;
+    int sx, sy;
 
-    for(y=0; y<16; y++){
-        for(x=0; x<16; x++){
-            acc+= FFABS(src[x+y*stride] - ref);
-        }
+    if(s->quarter_sample){
+        motion_x/=2;
+        motion_y/=2;
     }
 
-    return acc;
-}
-
-static int get_intra_count(MpegEncContext *s, uint8_t *src, uint8_t *ref, int stride){
-    int x, y, w, h;
-    int acc=0;
-
-    w= s->width &~15;
-    h= s->height&~15;
+    sx= motion_x & s_mask;
+    sy= motion_y & s_mask;
+    src_x += motion_x >> (lowres+1);
+    src_y += motion_y >> (lowres+1);
 
-    for(y=0; y<h; y+=16){
-        for(x=0; x<w; x+=16){
-            int offset= x + y*stride;
-            int sad = s->dsp.sad[0](NULL, src + offset, ref + offset, stride, 16);
-            int mean= (s->dsp.pix_sum(src + offset, stride) + 128)>>8;
-            int sae = get_sae(src + offset, mean, stride);
+    src += src_y * stride + src_x;
 
-            acc+= sae + 500 < sad;
-        }
+    if(   (unsigned)src_x > h_edge_pos                 - (!!sx) - w
+       || (unsigned)src_y >(v_edge_pos >> field_based) - (!!sy) - h){
+        ff_emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, w+1, (h+1)<<field_based,
+                            src_x, src_y<<field_based, h_edge_pos, v_edge_pos);
+        src= s->edge_emu_buffer;
+        emu=1;
     }
-    return acc;
-}
-
 
-static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
-    AVFrame *pic=NULL;
-    int64_t pts;
-    int i;
-    const int encoding_delay= s->max_b_frames;
-    int direct=1;
-
-    if(pic_arg){
-        pts= pic_arg->pts;
-        pic_arg->display_picture_number= s->input_picture_number++;
+    sx <<= 2 - lowres;
+    sy <<= 2 - lowres;
+    if(field_select)
+        src += s->linesize;
+    pix_op[lowres](dest, src, stride, h, sx, sy);
+    return emu;
+}
 
-        if(pts != AV_NOPTS_VALUE){
-            if(s->user_specified_pts != AV_NOPTS_VALUE){
-                int64_t time= pts;
-                int64_t last= s->user_specified_pts;
+/* apply one mpeg motion vector to the three components */
+static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
+                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
+                               int field_based, int bottom_field, int field_select,
+                               uint8_t **ref_picture, h264_chroma_mc_func *pix_op,
+                               int motion_x, int motion_y, int h)
+{
+    uint8_t *ptr_y, *ptr_cb, *ptr_cr;
+    int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, uvlinesize, linesize, sx, sy, uvsx, uvsy;
+    const int lowres= s->avctx->lowres;
+    const int block_s= 8>>lowres;
+    const int s_mask= (2<<lowres)-1;
+    const int h_edge_pos = s->h_edge_pos >> lowres;
+    const int v_edge_pos = s->v_edge_pos >> lowres;
+    linesize   = s->current_picture.linesize[0] << field_based;
+    uvlinesize = s->current_picture.linesize[1] << field_based;
 
-                if(time <= last){
-                    av_log(s->avctx, AV_LOG_ERROR, "Error, Invalid timestamp=%"PRId64", last=%"PRId64"\n", pts, s->user_specified_pts);
-                    return -1;
-                }
-            }
-            s->user_specified_pts= pts;
-        }else{
-            if(s->user_specified_pts != AV_NOPTS_VALUE){
-                s->user_specified_pts=
-                pts= s->user_specified_pts + 1;
-                av_log(s->avctx, AV_LOG_INFO, "Warning: AVFrame.pts=? trying to guess (%"PRId64")\n", pts);
-            }else{
-                pts= pic_arg->display_picture_number;
-            }
-        }
+    if(s->quarter_sample){ //FIXME obviously not perfect but qpel wont work in lowres anyway
+        motion_x/=2;
+        motion_y/=2;
     }
 
-  if(pic_arg){
-    if(encoding_delay && !(s->flags&CODEC_FLAG_INPUT_PRESERVED)) direct=0;
-    if(pic_arg->linesize[0] != s->linesize) direct=0;
-    if(pic_arg->linesize[1] != s->uvlinesize) direct=0;
-    if(pic_arg->linesize[2] != s->uvlinesize) direct=0;
-
-//    av_log(AV_LOG_DEBUG, "%d %d %d %d\n",pic_arg->linesize[0], pic_arg->linesize[1], s->linesize, s->uvlinesize);
-
-    if(direct){
-        i= ff_find_unused_picture(s, 1);
-
-        pic= (AVFrame*)&s->picture[i];
-        pic->reference= 3;
+    if(field_based){
+        motion_y += (bottom_field - field_select)*((1<<lowres)-1);
+    }
 
-        for(i=0; i<4; i++){
-            pic->data[i]= pic_arg->data[i];
-            pic->linesize[i]= pic_arg->linesize[i];
-        }
-        alloc_picture(s, (Picture*)pic, 1);
-    }else{
-        i= ff_find_unused_picture(s, 0);
+    sx= motion_x & s_mask;
+    sy= motion_y & s_mask;
+    src_x = s->mb_x*2*block_s               + (motion_x >> (lowres+1));
+    src_y =(s->mb_y*2*block_s>>field_based) + (motion_y >> (lowres+1));
 
-        pic= (AVFrame*)&s->picture[i];
-        pic->reference= 3;
+    if (s->out_format == FMT_H263) {
+        uvsx = ((motion_x>>1) & s_mask) | (sx&1);
+        uvsy = ((motion_y>>1) & s_mask) | (sy&1);
+        uvsrc_x = src_x>>1;
+        uvsrc_y = src_y>>1;
+    }else if(s->out_format == FMT_H261){//even chroma mv's are full pel in H261
+        mx = motion_x / 4;
+        my = motion_y / 4;
+        uvsx = (2*mx) & s_mask;
+        uvsy = (2*my) & s_mask;
+        uvsrc_x = s->mb_x*block_s               + (mx >> lowres);
+        uvsrc_y = s->mb_y*block_s               + (my >> lowres);
+    } else {
+        mx = motion_x / 2;
+        my = motion_y / 2;
+        uvsx = mx & s_mask;
+        uvsy = my & s_mask;
+        uvsrc_x = s->mb_x*block_s               + (mx >> (lowres+1));
+        uvsrc_y =(s->mb_y*block_s>>field_based) + (my >> (lowres+1));
+    }
 
-        alloc_picture(s, (Picture*)pic, 0);
+    ptr_y  = ref_picture[0] + src_y * linesize + src_x;
+    ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
+    ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
 
-        if(   pic->data[0] + INPLACE_OFFSET == pic_arg->data[0]
-           && pic->data[1] + INPLACE_OFFSET == pic_arg->data[1]
-           && pic->data[2] + INPLACE_OFFSET == pic_arg->data[2]){
-       // empty
-        }else{
-            int h_chroma_shift, v_chroma_shift;
-            avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &h_chroma_shift, &v_chroma_shift);
-
-            for(i=0; i<3; i++){
-                int src_stride= pic_arg->linesize[i];
-                int dst_stride= i ? s->uvlinesize : s->linesize;
-                int h_shift= i ? h_chroma_shift : 0;
-                int v_shift= i ? v_chroma_shift : 0;
-                int w= s->width >>h_shift;
-                int h= s->height>>v_shift;
-                uint8_t *src= pic_arg->data[i];
-                uint8_t *dst= pic->data[i];
-
-                if(!s->avctx->rc_buffer_size)
-                    dst +=INPLACE_OFFSET;
-
-                if(src_stride==dst_stride)
-                    memcpy(dst, src, src_stride*h);
-                else{
-                    while(h--){
-                        memcpy(dst, src, w);
-                        dst += dst_stride;
-                        src += src_stride;
-                    }
-                }
+    if(   (unsigned)src_x > h_edge_pos                 - (!!sx) - 2*block_s
+       || (unsigned)src_y >(v_edge_pos >> field_based) - (!!sy) - h){
+            ff_emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize, 17, 17+field_based,
+                             src_x, src_y<<field_based, h_edge_pos, v_edge_pos);
+            ptr_y = s->edge_emu_buffer;
+            if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
+                uint8_t *uvbuf= s->edge_emu_buffer+18*s->linesize;
+                ff_emulated_edge_mc(uvbuf  , ptr_cb, s->uvlinesize, 9, 9+field_based,
+                                 uvsrc_x, uvsrc_y<<field_based, h_edge_pos>>1, v_edge_pos>>1);
+                ff_emulated_edge_mc(uvbuf+16, ptr_cr, s->uvlinesize, 9, 9+field_based,
+                                 uvsrc_x, uvsrc_y<<field_based, h_edge_pos>>1, v_edge_pos>>1);
+                ptr_cb= uvbuf;
+                ptr_cr= uvbuf+16;
             }
-        }
     }
-    copy_picture_attributes(s, pic, pic_arg);
-    pic->pts= pts; //we set this here to avoid modifiying pic_arg
-  }
-
-    /* shift buffer entries */
-    for(i=1; i<MAX_PICTURE_COUNT /*s->encoding_delay+1*/; i++)
-        s->input_picture[i-1]= s->input_picture[i];
 
-    s->input_picture[encoding_delay]= (Picture*)pic;
-
-    return 0;
-}
+    if(bottom_field){ //FIXME use this for field pix too instead of the obnoxious hack which changes picture.data
+        dest_y += s->linesize;
+        dest_cb+= s->uvlinesize;
+        dest_cr+= s->uvlinesize;
+    }
 
-static int skip_check(MpegEncContext *s, Picture *p, Picture *ref){
-    int x, y, plane;
-    int score=0;
-    int64_t score64=0;
-
-    for(plane=0; plane<3; plane++){
-        const int stride= p->linesize[plane];
-        const int bw= plane ? 1 : 2;
-        for(y=0; y<s->mb_height*bw; y++){
-            for(x=0; x<s->mb_width*bw; x++){
-                int off= p->type == FF_BUFFER_TYPE_SHARED ? 0: 16;
-                int v= s->dsp.frame_skip_cmp[1](s, p->data[plane] + 8*(x + y*stride)+off, ref->data[plane] + 8*(x + y*stride), stride, 8);
-
-                switch(s->avctx->frame_skip_exp){
-                    case 0: score= FFMAX(score, v); break;
-                    case 1: score+= FFABS(v);break;
-                    case 2: score+= v*v;break;
-                    case 3: score64+= FFABS(v*v*(int64_t)v);break;
-                    case 4: score64+= v*v*(int64_t)(v*v);break;
-                }
-            }
-        }
+    if(field_select){
+        ptr_y += s->linesize;
+        ptr_cb+= s->uvlinesize;
+        ptr_cr+= s->uvlinesize;
     }
 
-    if(score) score64= score;
+    sx <<= 2 - lowres;
+    sy <<= 2 - lowres;
+    pix_op[lowres-1](dest_y, ptr_y, linesize, h, sx, sy);
 
-    if(score64 < s->avctx->frame_skip_threshold)
-        return 1;
-    if(score64 < ((s->avctx->frame_skip_factor * (int64_t)s->lambda)>>8))
-        return 1;
-    return 0;
+    if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
+        uvsx <<= 2 - lowres;
+        uvsy <<= 2 - lowres;
+        pix_op[lowres](dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
+        pix_op[lowres](dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
+    }
+    //FIXME h261 lowres loop filter
 }
 
-static int estimate_best_b_count(MpegEncContext *s){
-    AVCodec *codec= avcodec_find_encoder(s->avctx->codec_id);
-    AVCodecContext *c= avcodec_alloc_context();
-    AVFrame input[FF_MAX_B_FRAMES+2];
-    const int scale= s->avctx->brd_scale;
-    int i, j, out_size, p_lambda, b_lambda, lambda2;
-    int outbuf_size= s->width * s->height; //FIXME
-    uint8_t *outbuf= av_malloc(outbuf_size);
-    int64_t best_rd= INT64_MAX;
-    int best_b_count= -1;
-
-    assert(scale>=0 && scale <=3);
-
-//    emms_c();
-    p_lambda= s->last_lambda_for[P_TYPE]; //s->next_picture_ptr->quality;
-    b_lambda= s->last_lambda_for[B_TYPE]; //p_lambda *FFABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset;
-    if(!b_lambda) b_lambda= p_lambda; //FIXME we should do this somewhere else
-    lambda2= (b_lambda*b_lambda + (1<<FF_LAMBDA_SHIFT)/2 ) >> FF_LAMBDA_SHIFT;
-
-    c->width = s->width >> scale;
-    c->height= s->height>> scale;
-    c->flags= CODEC_FLAG_QSCALE | CODEC_FLAG_PSNR | CODEC_FLAG_INPUT_PRESERVED /*| CODEC_FLAG_EMU_EDGE*/;
-    c->flags|= s->avctx->flags & CODEC_FLAG_QPEL;
-    c->mb_decision= s->avctx->mb_decision;
-    c->me_cmp= s->avctx->me_cmp;
-    c->mb_cmp= s->avctx->mb_cmp;
-    c->me_sub_cmp= s->avctx->me_sub_cmp;
-    c->pix_fmt = PIX_FMT_YUV420P;
-    c->time_base= s->avctx->time_base;
-    c->max_b_frames= s->max_b_frames;
-
-    if (avcodec_open(c, codec) < 0)
-        return -1;
-
-    for(i=0; i<s->max_b_frames+2; i++){
-        int ysize= c->width*c->height;
-        int csize= (c->width/2)*(c->height/2);
-        Picture pre_input, *pre_input_ptr= i ? s->input_picture[i-1] : s->next_picture_ptr;
-
-        if(pre_input_ptr)
-            pre_input= *pre_input_ptr;
-
-        if(pre_input.type != FF_BUFFER_TYPE_SHARED && i){
-            pre_input.data[0]+=INPLACE_OFFSET;
-            pre_input.data[1]+=INPLACE_OFFSET;
-            pre_input.data[2]+=INPLACE_OFFSET;
-        }
+static inline void chroma_4mv_motion_lowres(MpegEncContext *s,
+                                     uint8_t *dest_cb, uint8_t *dest_cr,
+                                     uint8_t **ref_picture,
+                                     h264_chroma_mc_func *pix_op,
+                                     int mx, int my){
+    const int lowres= s->avctx->lowres;
+    const int block_s= 8>>lowres;
+    const int s_mask= (2<<lowres)-1;
+    const int h_edge_pos = s->h_edge_pos >> (lowres+1);
+    const int v_edge_pos = s->v_edge_pos >> (lowres+1);
+    int emu=0, src_x, src_y, offset, sx, sy;
+    uint8_t *ptr;
 
-        avcodec_get_frame_defaults(&input[i]);
-        input[i].data[0]= av_malloc(ysize + 2*csize);
-        input[i].data[1]= input[i].data[0] + ysize;
-        input[i].data[2]= input[i].data[1] + csize;
-        input[i].linesize[0]= c->width;
-        input[i].linesize[1]=
-        input[i].linesize[2]= c->width/2;
-
-        if(!i || s->input_picture[i-1]){
-            s->dsp.shrink[scale](input[i].data[0], input[i].linesize[0], pre_input.data[0], pre_input.linesize[0], c->width, c->height);
-            s->dsp.shrink[scale](input[i].data[1], input[i].linesize[1], pre_input.data[1], pre_input.linesize[1], c->width>>1, c->height>>1);
-            s->dsp.shrink[scale](input[i].data[2], input[i].linesize[2], pre_input.data[2], pre_input.linesize[2], c->width>>1, c->height>>1);
-        }
+    if(s->quarter_sample){
+        mx/=2;
+        my/=2;
     }
 
-    for(j=0; j<s->max_b_frames+1; j++){
-        int64_t rd=0;
-
-        if(!s->input_picture[j])
-            break;
-
-        c->error[0]= c->error[1]= c->error[2]= 0;
-
-        input[0].pict_type= I_TYPE;
-        input[0].quality= 1 * FF_QP2LAMBDA;
-        out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[0]);
-//        rd += (out_size * lambda2) >> FF_LAMBDA_SHIFT;
-
-        for(i=0; i<s->max_b_frames+1; i++){
-            int is_p= i % (j+1) == j || i==s->max_b_frames;
-
-            input[i+1].pict_type= is_p ? P_TYPE : B_TYPE;
-            input[i+1].quality= is_p ? p_lambda : b_lambda;
-            out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[i+1]);
-            rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
-        }
-
-        /* get the delayed frames */
-        while(out_size){
-            out_size = avcodec_encode_video(c, outbuf, outbuf_size, NULL);
-            rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
-        }
+    /* In case of 8X8, we construct a single chroma motion vector
+       with a special rounding */
+    mx= ff_h263_round_chroma(mx);
+    my= ff_h263_round_chroma(my);
 
-        rd += c->error[0] + c->error[1] + c->error[2];
+    sx= mx & s_mask;
+    sy= my & s_mask;
+    src_x = s->mb_x*block_s + (mx >> (lowres+1));
+    src_y = s->mb_y*block_s + (my >> (lowres+1));
 
-        if(rd < best_rd){
-            best_rd= rd;
-            best_b_count= j;
+    offset = src_y * s->uvlinesize + src_x;
+    ptr = ref_picture[1] + offset;
+    if(s->flags&CODEC_FLAG_EMU_EDGE){
+        if(   (unsigned)src_x > h_edge_pos - (!!sx) - block_s
+           || (unsigned)src_y > v_edge_pos - (!!sy) - block_s){
+            ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, src_x, src_y, h_edge_pos, v_edge_pos);
+            ptr= s->edge_emu_buffer;
+            emu=1;
         }
     }
+    sx <<= 2 - lowres;
+    sy <<= 2 - lowres;
+    pix_op[lowres](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
 
-    av_freep(&outbuf);
-    avcodec_close(c);
-    av_freep(&c);
-
-    for(i=0; i<s->max_b_frames+2; i++){
-        av_freep(&input[i].data[0]);
+    ptr = ref_picture[2] + offset;
+    if(emu){
+        ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, src_x, src_y, h_edge_pos, v_edge_pos);
+        ptr= s->edge_emu_buffer;
     }
-
-    return best_b_count;
+    pix_op[lowres](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
 }
 
-static void select_input_picture(MpegEncContext *s){
-    int i;
-
-    for(i=1; i<MAX_PICTURE_COUNT; i++)
-        s->reordered_input_picture[i-1]= s->reordered_input_picture[i];
-    s->reordered_input_picture[MAX_PICTURE_COUNT-1]= NULL;
-
-    /* set next picture type & ordering */
-    if(s->reordered_input_picture[0]==NULL && s->input_picture[0]){
-        if(/*s->picture_in_gop_number >= s->gop_size ||*/ s->next_picture_ptr==NULL || s->intra_only){
-            s->reordered_input_picture[0]= s->input_picture[0];
-            s->reordered_input_picture[0]->pict_type= I_TYPE;
-            s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
-        }else{
-            int b_frames;
-
-            if(s->avctx->frame_skip_threshold || s->avctx->frame_skip_factor){
-                if(s->picture_in_gop_number < s->gop_size && skip_check(s, s->input_picture[0], s->next_picture_ptr)){
-                //FIXME check that te gop check above is +-1 correct
-//av_log(NULL, AV_LOG_DEBUG, "skip %p %"PRId64"\n", s->input_picture[0]->data[0], s->input_picture[0]->pts);
-
-                    if(s->input_picture[0]->type == FF_BUFFER_TYPE_SHARED){
-                        for(i=0; i<4; i++)
-                            s->input_picture[0]->data[i]= NULL;
-                        s->input_picture[0]->type= 0;
-                    }else{
-                        assert(   s->input_picture[0]->type==FF_BUFFER_TYPE_USER
-                               || s->input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
-
-                        s->avctx->release_buffer(s->avctx, (AVFrame*)s->input_picture[0]);
-                    }
+/**
+ * motion compensation of a single macroblock
+ * @param s context
+ * @param dest_y luma destination pointer
+ * @param dest_cb chroma cb/u destination pointer
+ * @param dest_cr chroma cr/v destination pointer
+ * @param dir direction (0->forward, 1->backward)
+ * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
+ * @param pic_op halfpel motion compensation function (average or put normally)
+ * the motion vectors are taken from s->mv and the MV type from s->mv_type
+ */
+static inline void MPV_motion_lowres(MpegEncContext *s,
+                              uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
+                              int dir, uint8_t **ref_picture,
+                              h264_chroma_mc_func *pix_op)
+{
+    int mx, my;
+    int mb_x, mb_y, i;
+    const int lowres= s->avctx->lowres;
+    const int block_s= 8>>lowres;
 
-                    emms_c();
-                    ff_vbv_update(s, 0);
+    mb_x = s->mb_x;
+    mb_y = s->mb_y;
 
-                    goto no_output_pic;
-                }
-            }
-
-            if(s->flags&CODEC_FLAG_PASS2){
-                for(i=0; i<s->max_b_frames+1; i++){
-                    int pict_num= s->input_picture[0]->display_picture_number + i;
-
-                    if(pict_num >= s->rc_context.num_entries)
-                        break;
-                    if(!s->input_picture[i]){
-                        s->rc_context.entry[pict_num-1].new_pict_type = P_TYPE;
-                        break;
-                    }
+    switch(s->mv_type) {
+    case MV_TYPE_16X16:
+        mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                    0, 0, 0,
+                    ref_picture, pix_op,
+                    s->mv[dir][0][0], s->mv[dir][0][1], 2*block_s);
+        break;
+    case MV_TYPE_8X8:
+        mx = 0;
+        my = 0;
+            for(i=0;i<4;i++) {
+                hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) * s->linesize)*block_s,
+                            ref_picture[0], 0, 0,
+                            (2*mb_x + (i & 1))*block_s, (2*mb_y + (i >>1))*block_s,
+                            s->width, s->height, s->linesize,
+                            s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
+                            block_s, block_s, pix_op,
+                            s->mv[dir][i][0], s->mv[dir][i][1]);
 
-                    s->input_picture[i]->pict_type=
-                        s->rc_context.entry[pict_num].new_pict_type;
-                }
+                mx += s->mv[dir][i][0];
+                my += s->mv[dir][i][1];
             }
 
-            if(s->avctx->b_frame_strategy==0){
-                b_frames= s->max_b_frames;
-                while(b_frames && !s->input_picture[b_frames]) b_frames--;
-            }else if(s->avctx->b_frame_strategy==1){
-                for(i=1; i<s->max_b_frames+1; i++){
-                    if(s->input_picture[i] && s->input_picture[i]->b_frame_score==0){
-                        s->input_picture[i]->b_frame_score=
-                            get_intra_count(s, s->input_picture[i  ]->data[0],
-                                               s->input_picture[i-1]->data[0], s->linesize) + 1;
-                    }
-                }
-                for(i=0; i<s->max_b_frames+1; i++){
-                    if(s->input_picture[i]==NULL || s->input_picture[i]->b_frame_score - 1 > s->mb_num/s->avctx->b_sensitivity) break;
-                }
+        if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY))
+            chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture, pix_op, mx, my);
+        break;
+    case MV_TYPE_FIELD:
+        if (s->picture_structure == PICT_FRAME) {
+            /* top field */
+            mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                        1, 0, s->field_select[dir][0],
+                        ref_picture, pix_op,
+                        s->mv[dir][0][0], s->mv[dir][0][1], block_s);
+            /* bottom field */
+            mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                        1, 1, s->field_select[dir][1],
+                        ref_picture, pix_op,
+                        s->mv[dir][1][0], s->mv[dir][1][1], block_s);
+        } else {
+            if(s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != FF_B_TYPE && !s->first_field){
+                ref_picture= s->current_picture_ptr->data;
+            }
 
-                b_frames= FFMAX(0, i-1);
+            mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                        0, 0, s->field_select[dir][0],
+                        ref_picture, pix_op,
+                        s->mv[dir][0][0], s->mv[dir][0][1], 2*block_s);
+        }
+        break;
+    case MV_TYPE_16X8:
+        for(i=0; i<2; i++){
+            uint8_t ** ref2picture;
 
-                /* reset scores */
-                for(i=0; i<b_frames+1; i++){
-                    s->input_picture[i]->b_frame_score=0;
-                }
-            }else if(s->avctx->b_frame_strategy==2){
-                b_frames= estimate_best_b_count(s);
+            if(s->picture_structure == s->field_select[dir][i] + 1 || s->pict_type == FF_B_TYPE || s->first_field){
+                ref2picture= ref_picture;
             }else{
-                av_log(s->avctx, AV_LOG_ERROR, "illegal b frame strategy\n");
-                b_frames=0;
+                ref2picture= s->current_picture_ptr->data;
             }
 
-            emms_c();
-//static int b_count=0;
-//b_count+= b_frames;
-//av_log(s->avctx, AV_LOG_DEBUG, "b_frames: %d\n", b_count);
+            mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                        0, 0, s->field_select[dir][i],
+                        ref2picture, pix_op,
+                        s->mv[dir][i][0], s->mv[dir][i][1] + 2*block_s*i, block_s);
 
-            for(i= b_frames - 1; i>=0; i--){
-                int type= s->input_picture[i]->pict_type;
-                if(type && type != B_TYPE)
-                    b_frames= i;
-            }
-            if(s->input_picture[b_frames]->pict_type == B_TYPE && b_frames == s->max_b_frames){
-                av_log(s->avctx, AV_LOG_ERROR, "warning, too many b frames in a row\n");
+            dest_y += 2*block_s*s->linesize;
+            dest_cb+= (2*block_s>>s->chroma_y_shift)*s->uvlinesize;
+            dest_cr+= (2*block_s>>s->chroma_y_shift)*s->uvlinesize;
+        }
+        break;
+    case MV_TYPE_DMV:
+        if(s->picture_structure == PICT_FRAME){
+            for(i=0; i<2; i++){
+                int j;
+                for(j=0; j<2; j++){
+                    mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                                1, j, j^i,
+                                ref_picture, pix_op,
+                                s->mv[dir][2*i + j][0], s->mv[dir][2*i + j][1], block_s);
+                }
+                pix_op = s->dsp.avg_h264_chroma_pixels_tab;
             }
+        }else{
+            for(i=0; i<2; i++){
+                mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                            0, 0, s->picture_structure != i+1,
+                            ref_picture, pix_op,
+                            s->mv[dir][2*i][0],s->mv[dir][2*i][1],2*block_s);
 
-            if(s->picture_in_gop_number + b_frames >= s->gop_size){
-              if((s->flags2 & CODEC_FLAG2_STRICT_GOP) && s->gop_size > s->picture_in_gop_number){
-                    b_frames= s->gop_size - s->picture_in_gop_number - 1;
-              }else{
-                if(s->flags & CODEC_FLAG_CLOSED_GOP)
-                    b_frames=0;
-                s->input_picture[b_frames]->pict_type= I_TYPE;
-              }
-            }
+                // after put we make avg of the same block
+                pix_op = s->dsp.avg_h264_chroma_pixels_tab;
 
-            if(   (s->flags & CODEC_FLAG_CLOSED_GOP)
-               && b_frames
-               && s->input_picture[b_frames]->pict_type== I_TYPE)
-                b_frames--;
-
-            s->reordered_input_picture[0]= s->input_picture[b_frames];
-            if(s->reordered_input_picture[0]->pict_type != I_TYPE)
-                s->reordered_input_picture[0]->pict_type= P_TYPE;
-            s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
-            for(i=0; i<b_frames; i++){
-                s->reordered_input_picture[i+1]= s->input_picture[i];
-                s->reordered_input_picture[i+1]->pict_type= B_TYPE;
-                s->reordered_input_picture[i+1]->coded_picture_number= s->coded_picture_number++;
+                //opposite parity is always in the same frame if this is second field
+                if(!s->first_field){
+                    ref_picture = s->current_picture_ptr->data;
+                }
             }
         }
+    break;
+    default: assert(0);
     }
-no_output_pic:
-    if(s->reordered_input_picture[0]){
-        s->reordered_input_picture[0]->reference= s->reordered_input_picture[0]->pict_type!=B_TYPE ? 3 : 0;
-
-        copy_picture(&s->new_picture, s->reordered_input_picture[0]);
-
-        if(s->reordered_input_picture[0]->type == FF_BUFFER_TYPE_SHARED || s->avctx->rc_buffer_size){
-            // input is a shared pix, so we can't modifiy it -> alloc a new one & ensure that the shared one is reuseable
-
-            int i= ff_find_unused_picture(s, 0);
-            Picture *pic= &s->picture[i];
-
-            pic->reference              = s->reordered_input_picture[0]->reference;
-            alloc_picture(s, pic, 0);
-
-            /* mark us unused / free shared pic */
-            if(s->reordered_input_picture[0]->type == FF_BUFFER_TYPE_INTERNAL)
-                s->avctx->release_buffer(s->avctx, (AVFrame*)s->reordered_input_picture[0]);
-            for(i=0; i<4; i++)
-                s->reordered_input_picture[0]->data[i]= NULL;
-            s->reordered_input_picture[0]->type= 0;
-
-            copy_picture_attributes(s, (AVFrame*)pic, (AVFrame*)s->reordered_input_picture[0]);
+}
 
-            s->current_picture_ptr= pic;
-        }else{
-            // input is not a shared pix -> reuse buffer for current_pix
+/* put block[] to dest[] */
+static inline void put_dct(MpegEncContext *s,
+                           DCTELEM *block, int i, uint8_t *dest, int line_size, int qscale)
+{
+    s->dct_unquantize_intra(s, block, i, qscale);
+    s->dsp.idct_put (dest, line_size, block);
+}
 
-            assert(   s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_USER
-                   || s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
+/* add block[] to dest[] */
+static inline void add_dct(MpegEncContext *s,
+                           DCTELEM *block, int i, uint8_t *dest, int line_size)
+{
+    if (s->block_last_index[i] >= 0) {
+        s->dsp.idct_add (dest, line_size, block);
+    }
+}
 
-            s->current_picture_ptr= s->reordered_input_picture[0];
-            for(i=0; i<4; i++){
-                s->new_picture.data[i]+= INPLACE_OFFSET;
-            }
-        }
-        copy_picture(&s->current_picture, s->current_picture_ptr);
+static inline void add_dequant_dct(MpegEncContext *s,
+                           DCTELEM *block, int i, uint8_t *dest, int line_size, int qscale)
+{
+    if (s->block_last_index[i] >= 0) {
+        s->dct_unquantize_inter(s, block, i, qscale);
 
-        s->picture_number= s->new_picture.display_picture_number;
-//printf("dpn:%d\n", s->picture_number);
-    }else{
-       memset(&s->new_picture, 0, sizeof(Picture));
+        s->dsp.idct_add (dest, line_size, block);
     }
 }
 
-int MPV_encode_picture(AVCodecContext *avctx,
-                       unsigned char *buf, int buf_size, void *data)
+/**
+ * cleans dc, ac, coded_block for the current non intra MB
+ */
+void ff_clean_intra_table_entries(MpegEncContext *s)
 {
-    MpegEncContext *s = avctx->priv_data;
-    AVFrame *pic_arg = data;
-    int i, stuffing_count;
-
-    for(i=0; i<avctx->thread_count; i++){
-        int start_y= s->thread_context[i]->start_mb_y;
-        int   end_y= s->thread_context[i]->  end_mb_y;
-        int h= s->mb_height;
-        uint8_t *start= buf + (size_t)(((int64_t) buf_size)*start_y/h);
-        uint8_t *end  = buf + (size_t)(((int64_t) buf_size)*  end_y/h);
+    int wrap = s->b8_stride;
+    int xy = s->block_index[0];
 
-        init_put_bits(&s->thread_context[i]->pb, start, end - start);
+    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_t));
+    memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
+    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->mb_stride;
+    xy = s->mb_x + s->mb_y * wrap;
+    s->dc_val[1][xy] =
+    s->dc_val[2][xy] = 1024;
+    /* ac pred */
+    memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
+    memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
 
-    s->picture_in_gop_number++;
+    s->mbintra_table[xy]= 0;
+}
 
-    if(load_input_picture(s, pic_arg) < 0)
-        return -1;
+/* generic function called after a macroblock has been parsed by the
+   decoder or after it has been encoded by the encoder.
+
+   Important variables used:
+   s->mb_intra : true if intra macroblock
+   s->mv_dir   : motion vector direction
+   s->mv_type  : motion vector type
+   s->mv       : motion vector
+   s->interlaced_dct : true if interlaced dct used (mpeg2)
+ */
+static av_always_inline void MPV_decode_mb_internal(MpegEncContext *s, DCTELEM block[12][64], int lowres_flag)
+{
+    int mb_x, mb_y;
+    const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
+#ifdef HAVE_XVMC
+    if(s->avctx->xvmc_acceleration){
+        XVMC_decode_mb(s);//xvmc uses pblocks
+        return;
+    }
+#endif
 
-    select_input_picture(s);
+    mb_x = s->mb_x;
+    mb_y = s->mb_y;
 
-    /* output? */
-    if(s->new_picture.data[0]){
-        s->pict_type= s->new_picture.pict_type;
-//emms_c();
-//printf("qs:%f %f %d\n", s->new_picture.quality, s->current_picture.quality, s->qscale);
-        MPV_frame_start(s, avctx);
-vbv_retry:
-        if (encode_picture(s, s->picture_number) < 0)
-            return -1;
+    if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
+       /* save DCT coefficients */
+       int i,j;
+       DCTELEM *dct = &s->current_picture.dct_coeff[mb_xy*64*6];
+       for(i=0; i<6; i++)
+           for(j=0; j<64; j++)
+               *dct++ = block[i][s->dsp.idct_permutation[j]];
+    }
 
-        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;
-        avctx->i_tex_bits  = s->i_tex_bits;
-        avctx->p_tex_bits  = s->p_tex_bits;
-        avctx->i_count     = s->i_count;
-        avctx->p_count     = s->mb_num - s->i_count - s->skip_count; //FIXME f/b_count in avctx
-        avctx->skip_count  = s->skip_count;
-
-        MPV_frame_end(s);
-
-        if (s->out_format == FMT_MJPEG)
-            mjpeg_picture_trailer(s);
-
-        if(avctx->rc_buffer_size){
-            RateControlContext *rcc= &s->rc_context;
-            int max_size= rcc->buffer_index/3;
-
-            if(put_bits_count(&s->pb) > max_size && s->lambda < s->avctx->lmax){
-                s->next_lambda= FFMAX(s->lambda+1, s->lambda*(s->qscale+1) / s->qscale);
-                if(s->adaptive_quant){
-                    int i;
-                    for(i=0; i<s->mb_height*s->mb_width; i++)
-                        s->lambda_table[i]= FFMAX(s->lambda_table[i]+1, s->lambda_table[i]*(s->qscale+1) / s->qscale);
-                }
-                s->mb_skipped = 0;        //done in MPV_frame_start()
-                if(s->pict_type==P_TYPE){ //done in encode_picture() so we must undo it
-                    if(s->flipflop_rounding || s->codec_id == CODEC_ID_H263P || s->codec_id == CODEC_ID_MPEG4)
-                        s->no_rounding ^= 1;
-                }
-                if(s->pict_type!=B_TYPE){
-                    s->time_base= s->last_time_base;
-                    s->last_non_b_time= s->time - s->pp_time;
-                }
-//                av_log(NULL, AV_LOG_ERROR, "R:%d ", s->next_lambda);
-                for(i=0; i<avctx->thread_count; i++){
-                    PutBitContext *pb= &s->thread_context[i]->pb;
-                    init_put_bits(pb, pb->buf, pb->buf_end - pb->buf);
-                }
-                goto vbv_retry;
-            }
+    s->current_picture.qscale_table[mb_xy]= s->qscale;
 
-            assert(s->avctx->rc_max_rate);
+    /* update DC predictors for P macroblocks */
+    if (!s->mb_intra) {
+        if (s->h263_pred || s->h263_aic) {
+            if(s->mbintra_table[mb_xy])
+                ff_clean_intra_table_entries(s);
+        } else {
+            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_xy]=1;
 
-        if(s->flags&CODEC_FLAG_PASS1)
-            ff_write_pass1_stats(s);
+    if ((s->flags&CODEC_FLAG_PSNR) || !(s->encoding && (s->intra_only || s->pict_type==FF_B_TYPE) && s->avctx->mb_decision != FF_MB_DECISION_RD)) { //FIXME precalc
+        uint8_t *dest_y, *dest_cb, *dest_cr;
+        int dct_linesize, dct_offset;
+        op_pixels_func (*op_pix)[4];
+        qpel_mc_func (*op_qpix)[16];
+        const int linesize= s->current_picture.linesize[0]; //not s->linesize as this would be wrong for field pics
+        const int uvlinesize= s->current_picture.linesize[1];
+        const int readable= s->pict_type != FF_B_TYPE || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
+        const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
 
-        for(i=0; i<4; i++){
-            s->current_picture_ptr->error[i]= s->current_picture.error[i];
-            avctx->error[i] += s->current_picture_ptr->error[i];
-        }
+        /* avoid copy if macroblock skipped in last frame too */
+        /* skip only during decoding as we might trash the buffers during encoding a bit */
+        if(!s->encoding){
+            uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
+            const int age= s->current_picture.age;
 
-        if(s->flags&CODEC_FLAG_PASS1)
-            assert(avctx->header_bits + avctx->mv_bits + avctx->misc_bits + avctx->i_tex_bits + avctx->p_tex_bits == put_bits_count(&s->pb));
-        flush_put_bits(&s->pb);
-        s->frame_bits  = put_bits_count(&s->pb);
+            assert(age);
 
-        stuffing_count= ff_vbv_update(s, s->frame_bits);
-        if(stuffing_count){
-            if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < stuffing_count + 50){
-                av_log(s->avctx, AV_LOG_ERROR, "stuffing too large\n");
-                return -1;
-            }
+            if (s->mb_skipped) {
+                s->mb_skipped= 0;
+                assert(s->pict_type!=FF_I_TYPE);
 
-            switch(s->codec_id){
-            case CODEC_ID_MPEG1VIDEO:
-            case CODEC_ID_MPEG2VIDEO:
-                while(stuffing_count--){
-                    put_bits(&s->pb, 8, 0);
-                }
-            break;
-            case CODEC_ID_MPEG4:
-                put_bits(&s->pb, 16, 0);
-                put_bits(&s->pb, 16, 0x1C3);
-                stuffing_count -= 4;
-                while(stuffing_count--){
-                    put_bits(&s->pb, 8, 0xFF);
+                (*mbskip_ptr) ++; /* indicate that this time we skipped it */
+                if(*mbskip_ptr >99) *mbskip_ptr= 99;
+
+                /* if previous was skipped too, then nothing to do !  */
+                if (*mbskip_ptr >= age && s->current_picture.reference){
+                    return;
                 }
-            break;
-            default:
-                av_log(s->avctx, AV_LOG_ERROR, "vbv buffer overflow\n");
+            } else if(!s->current_picture.reference){
+                (*mbskip_ptr) ++; /* increase counter so the age can be compared cleanly */
+                if(*mbskip_ptr >99) *mbskip_ptr= 99;
+            } else{
+                *mbskip_ptr = 0; /* not skipped */
             }
-            flush_put_bits(&s->pb);
-            s->frame_bits  = put_bits_count(&s->pb);
         }
 
-        /* update mpeg1/2 vbv_delay for CBR */
-        if(s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate && s->out_format == FMT_MPEG1
-           && 90000LL * (avctx->rc_buffer_size-1) <= s->avctx->rc_max_rate*0xFFFFLL){
-            int vbv_delay;
-
-            assert(s->repeat_first_field==0);
-
-            vbv_delay= lrintf(90000 * s->rc_context.buffer_index / s->avctx->rc_max_rate);
-            assert(vbv_delay < 0xFFFF);
+        dct_linesize = linesize << s->interlaced_dct;
+        dct_offset =(s->interlaced_dct)? linesize : linesize*block_size;
 
-            s->vbv_delay_ptr[0] &= 0xF8;
-            s->vbv_delay_ptr[0] |= vbv_delay>>13;
-            s->vbv_delay_ptr[1]  = vbv_delay>>5;
-            s->vbv_delay_ptr[2] &= 0x07;
-            s->vbv_delay_ptr[2] |= vbv_delay<<3;
+        if(readable){
+            dest_y=  s->dest[0];
+            dest_cb= s->dest[1];
+            dest_cr= s->dest[2];
+        }else{
+            dest_y = s->b_scratchpad;
+            dest_cb= s->b_scratchpad+16*linesize;
+            dest_cr= s->b_scratchpad+32*linesize;
         }
-        s->total_bits += s->frame_bits;
-        avctx->frame_bits  = s->frame_bits;
-    }else{
-        assert((pbBufPtr(&s->pb) == s->pb.buf));
-        s->frame_bits=0;
-    }
-    assert((s->frame_bits&7)==0);
 
-    return s->frame_bits/8;
-}
+        if (!s->mb_intra) {
+            /* motion handling */
+            /* decoding or more than one mb_type (MC was already done otherwise) */
+            if(!s->encoding){
+                if(lowres_flag){
+                    h264_chroma_mc_func *op_pix = s->dsp.put_h264_chroma_pixels_tab;
 
-#endif //CONFIG_ENCODERS
-
-static inline void gmc1_motion(MpegEncContext *s,
-                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                               uint8_t **ref_picture)
-{
-    uint8_t *ptr;
-    int offset, src_x, src_y, linesize, uvlinesize;
-    int motion_x, motion_y;
-    int emu=0;
-
-    motion_x= s->sprite_offset[0][0];
-    motion_y= s->sprite_offset[0][1];
-    src_x = s->mb_x * 16 + (motion_x >> (s->sprite_warping_accuracy+1));
-    src_y = s->mb_y * 16 + (motion_y >> (s->sprite_warping_accuracy+1));
-    motion_x<<=(3-s->sprite_warping_accuracy);
-    motion_y<<=(3-s->sprite_warping_accuracy);
-    src_x = clip(src_x, -16, s->width);
-    if (src_x == s->width)
-        motion_x =0;
-    src_y = clip(src_y, -16, s->height);
-    if (src_y == s->height)
-        motion_y =0;
-
-    linesize = s->linesize;
-    uvlinesize = s->uvlinesize;
-
-    ptr = ref_picture[0] + (src_y * linesize) + src_x;
-
-    if(s->flags&CODEC_FLAG_EMU_EDGE){
-        if(   (unsigned)src_x >= s->h_edge_pos - 17
-           || (unsigned)src_y >= s->v_edge_pos - 17){
-            ff_emulated_edge_mc(s->edge_emu_buffer, ptr, linesize, 17, 17, src_x, src_y, s->h_edge_pos, s->v_edge_pos);
-            ptr= s->edge_emu_buffer;
-        }
-    }
-
-    if((motion_x|motion_y)&7){
-        s->dsp.gmc1(dest_y  , ptr  , linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
-        s->dsp.gmc1(dest_y+8, ptr+8, linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
-    }else{
-        int dxy;
-
-        dxy= ((motion_x>>3)&1) | ((motion_y>>2)&2);
-        if (s->no_rounding){
-            s->dsp.put_no_rnd_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);
-        }else{
-            s->dsp.put_pixels_tab       [0][dxy](dest_y, ptr, linesize, 16);
-        }
-    }
-
-    if(s->flags&CODEC_FLAG_GRAY) return;
-
-    motion_x= s->sprite_offset[1][0];
-    motion_y= s->sprite_offset[1][1];
-    src_x = s->mb_x * 8 + (motion_x >> (s->sprite_warping_accuracy+1));
-    src_y = s->mb_y * 8 + (motion_y >> (s->sprite_warping_accuracy+1));
-    motion_x<<=(3-s->sprite_warping_accuracy);
-    motion_y<<=(3-s->sprite_warping_accuracy);
-    src_x = clip(src_x, -8, s->width>>1);
-    if (src_x == s->width>>1)
-        motion_x =0;
-    src_y = clip(src_y, -8, s->height>>1);
-    if (src_y == s->height>>1)
-        motion_y =0;
-
-    offset = (src_y * uvlinesize) + src_x;
-    ptr = ref_picture[1] + offset;
-    if(s->flags&CODEC_FLAG_EMU_EDGE){
-        if(   (unsigned)src_x >= (s->h_edge_pos>>1) - 9
-           || (unsigned)src_y >= (s->v_edge_pos>>1) - 9){
-            ff_emulated_edge_mc(s->edge_emu_buffer, ptr, uvlinesize, 9, 9, src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
-            ptr= s->edge_emu_buffer;
-            emu=1;
-        }
-    }
-    s->dsp.gmc1(dest_cb, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
-
-    ptr = ref_picture[2] + offset;
-    if(emu){
-        ff_emulated_edge_mc(s->edge_emu_buffer, ptr, uvlinesize, 9, 9, src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
-        ptr= s->edge_emu_buffer;
-    }
-    s->dsp.gmc1(dest_cr, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
-
-    return;
-}
-
-static inline void gmc_motion(MpegEncContext *s,
-                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                               uint8_t **ref_picture)
-{
-    uint8_t *ptr;
-    int linesize, uvlinesize;
-    const int a= s->sprite_warping_accuracy;
-    int ox, oy;
-
-    linesize = s->linesize;
-    uvlinesize = s->uvlinesize;
-
-    ptr = ref_picture[0];
-
-    ox= s->sprite_offset[0][0] + s->sprite_delta[0][0]*s->mb_x*16 + s->sprite_delta[0][1]*s->mb_y*16;
-    oy= s->sprite_offset[0][1] + s->sprite_delta[1][0]*s->mb_x*16 + s->sprite_delta[1][1]*s->mb_y*16;
-
-    s->dsp.gmc(dest_y, ptr, linesize, 16,
-           ox,
-           oy,
-           s->sprite_delta[0][0], s->sprite_delta[0][1],
-           s->sprite_delta[1][0], s->sprite_delta[1][1],
-           a+1, (1<<(2*a+1)) - s->no_rounding,
-           s->h_edge_pos, s->v_edge_pos);
-    s->dsp.gmc(dest_y+8, ptr, linesize, 16,
-           ox + s->sprite_delta[0][0]*8,
-           oy + s->sprite_delta[1][0]*8,
-           s->sprite_delta[0][0], s->sprite_delta[0][1],
-           s->sprite_delta[1][0], s->sprite_delta[1][1],
-           a+1, (1<<(2*a+1)) - s->no_rounding,
-           s->h_edge_pos, s->v_edge_pos);
-
-    if(s->flags&CODEC_FLAG_GRAY) return;
-
-    ox= s->sprite_offset[1][0] + s->sprite_delta[0][0]*s->mb_x*8 + s->sprite_delta[0][1]*s->mb_y*8;
-    oy= s->sprite_offset[1][1] + s->sprite_delta[1][0]*s->mb_x*8 + s->sprite_delta[1][1]*s->mb_y*8;
-
-    ptr = ref_picture[1];
-    s->dsp.gmc(dest_cb, ptr, uvlinesize, 8,
-           ox,
-           oy,
-           s->sprite_delta[0][0], s->sprite_delta[0][1],
-           s->sprite_delta[1][0], s->sprite_delta[1][1],
-           a+1, (1<<(2*a+1)) - s->no_rounding,
-           s->h_edge_pos>>1, s->v_edge_pos>>1);
-
-    ptr = ref_picture[2];
-    s->dsp.gmc(dest_cr, ptr, uvlinesize, 8,
-           ox,
-           oy,
-           s->sprite_delta[0][0], s->sprite_delta[0][1],
-           s->sprite_delta[1][0], s->sprite_delta[1][1],
-           a+1, (1<<(2*a+1)) - s->no_rounding,
-           s->h_edge_pos>>1, s->v_edge_pos>>1);
-}
-
-/**
- * Copies a rectangular area of samples to a temporary buffer and replicates the boarder samples.
- * @param buf destination buffer
- * @param src source buffer
- * @param linesize number of bytes between 2 vertically adjacent samples in both the source and destination buffers
- * @param block_w width of block
- * @param block_h height of block
- * @param src_x x coordinate of the top left sample of the block in the source buffer
- * @param src_y y coordinate of the top left sample of the block in the source buffer
- * @param w width of the source buffer
- * @param h height of the source buffer
- */
-void ff_emulated_edge_mc(uint8_t *buf, uint8_t *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;
-
-    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= FFMAX(0, -src_y);
-    start_x= FFMAX(0, -src_x);
-    end_y= FFMIN(block_h, h-src_y);
-    end_x= FFMIN(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];
-        }
-    }
-}
-
-static inline int hpel_motion(MpegEncContext *s,
-                                  uint8_t *dest, uint8_t *src,
-                                  int field_based, int field_select,
-                                  int src_x, int src_y,
-                                  int width, int height, int stride,
-                                  int h_edge_pos, int v_edge_pos,
-                                  int w, int h, op_pixels_func *pix_op,
-                                  int motion_x, int motion_y)
-{
-    int dxy;
-    int emu=0;
-
-    dxy = ((motion_y & 1) << 1) | (motion_x & 1);
-    src_x += motion_x >> 1;
-    src_y += motion_y >> 1;
-
-    /* WARNING: do no forget half pels */
-    src_x = clip(src_x, -16, width); //FIXME unneeded for emu?
-    if (src_x == width)
-        dxy &= ~1;
-    src_y = clip(src_y, -16, height);
-    if (src_y == height)
-        dxy &= ~2;
-    src += src_y * stride + src_x;
-
-    if(s->unrestricted_mv && (s->flags&CODEC_FLAG_EMU_EDGE)){
-        if(   (unsigned)src_x > h_edge_pos - (motion_x&1) - w
-           || (unsigned)src_y > v_edge_pos - (motion_y&1) - h){
-            ff_emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, w+1, (h+1)<<field_based,
-                             src_x, src_y<<field_based, h_edge_pos, s->v_edge_pos);
-            src= s->edge_emu_buffer;
-            emu=1;
-        }
-    }
-    if(field_select)
-        src += s->linesize;
-    pix_op[dxy](dest, src, stride, h);
-    return emu;
-}
-
-static inline int hpel_motion_lowres(MpegEncContext *s,
-                                  uint8_t *dest, uint8_t *src,
-                                  int field_based, int field_select,
-                                  int src_x, int src_y,
-                                  int width, int height, int stride,
-                                  int h_edge_pos, int v_edge_pos,
-                                  int w, int h, h264_chroma_mc_func *pix_op,
-                                  int motion_x, int motion_y)
-{
-    const int lowres= s->avctx->lowres;
-    const int s_mask= (2<<lowres)-1;
-    int emu=0;
-    int sx, sy;
-
-    if(s->quarter_sample){
-        motion_x/=2;
-        motion_y/=2;
-    }
-
-    sx= motion_x & s_mask;
-    sy= motion_y & s_mask;
-    src_x += motion_x >> (lowres+1);
-    src_y += motion_y >> (lowres+1);
-
-    src += src_y * stride + src_x;
-
-    if(   (unsigned)src_x > h_edge_pos                 - (!!sx) - w
-       || (unsigned)src_y >(v_edge_pos >> field_based) - (!!sy) - h){
-        ff_emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, w+1, (h+1)<<field_based,
-                            src_x, src_y<<field_based, h_edge_pos, v_edge_pos);
-        src= s->edge_emu_buffer;
-        emu=1;
-    }
-
-    sx <<= 2 - lowres;
-    sy <<= 2 - lowres;
-    if(field_select)
-        src += s->linesize;
-    pix_op[lowres](dest, src, stride, h, sx, sy);
-    return emu;
-}
-
-/* apply one mpeg motion vector to the three components */
-static always_inline void mpeg_motion(MpegEncContext *s,
-                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                               int field_based, int bottom_field, int field_select,
-                               uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
-                               int motion_x, int motion_y, int h)
-{
-    uint8_t *ptr_y, *ptr_cb, *ptr_cr;
-    int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos, uvlinesize, linesize;
-
-#if 0
-if(s->quarter_sample)
-{
-    motion_x>>=1;
-    motion_y>>=1;
-}
-#endif
-
-    v_edge_pos = s->v_edge_pos >> field_based;
-    linesize   = s->current_picture.linesize[0] << field_based;
-    uvlinesize = s->current_picture.linesize[1] << field_based;
-
-    dxy = ((motion_y & 1) << 1) | (motion_x & 1);
-    src_x = s->mb_x* 16               + (motion_x >> 1);
-    src_y =(s->mb_y<<(4-field_based)) + (motion_y >> 1);
-
-    if (s->out_format == FMT_H263) {
-        if((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based){
-            mx = (motion_x>>1)|(motion_x&1);
-            my = motion_y >>1;
-            uvdxy = ((my & 1) << 1) | (mx & 1);
-            uvsrc_x = s->mb_x* 8               + (mx >> 1);
-            uvsrc_y = (s->mb_y<<(3-field_based)) + (my >> 1);
-        }else{
-            uvdxy = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
-            uvsrc_x = src_x>>1;
-            uvsrc_y = src_y>>1;
-        }
-    }else if(s->out_format == FMT_H261){//even chroma mv's are full pel in H261
-        mx = motion_x / 4;
-        my = motion_y / 4;
-        uvdxy = 0;
-        uvsrc_x = s->mb_x*8 + mx;
-        uvsrc_y = s->mb_y*8 + my;
-    } else {
-        if(s->chroma_y_shift){
-            mx = motion_x / 2;
-            my = motion_y / 2;
-            uvdxy = ((my & 1) << 1) | (mx & 1);
-            uvsrc_x = s->mb_x* 8               + (mx >> 1);
-            uvsrc_y = (s->mb_y<<(3-field_based)) + (my >> 1);
-        } else {
-            if(s->chroma_x_shift){
-            //Chroma422
-                mx = motion_x / 2;
-                uvdxy = ((motion_y & 1) << 1) | (mx & 1);
-                uvsrc_x = s->mb_x* 8           + (mx >> 1);
-                uvsrc_y = src_y;
-            } else {
-            //Chroma444
-                uvdxy = dxy;
-                uvsrc_x = src_x;
-                uvsrc_y = src_y;
-            }
-        }
-    }
-
-    ptr_y  = ref_picture[0] + src_y * linesize + src_x;
-    ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
-    ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
-
-    if(   (unsigned)src_x > s->h_edge_pos - (motion_x&1) - 16
-       || (unsigned)src_y >    v_edge_pos - (motion_y&1) - h){
-            if(s->codec_id == CODEC_ID_MPEG2VIDEO ||
-               s->codec_id == CODEC_ID_MPEG1VIDEO){
-                av_log(s->avctx,AV_LOG_DEBUG,"MPEG motion vector out of boundary\n");
-                return ;
-            }
-            ff_emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize, 17, 17+field_based,
-                             src_x, src_y<<field_based, s->h_edge_pos, s->v_edge_pos);
-            ptr_y = s->edge_emu_buffer;
-            if(!(s->flags&CODEC_FLAG_GRAY)){
-                uint8_t *uvbuf= s->edge_emu_buffer+18*s->linesize;
-                ff_emulated_edge_mc(uvbuf  , ptr_cb, s->uvlinesize, 9, 9+field_based,
-                                 uvsrc_x, uvsrc_y<<field_based, s->h_edge_pos>>1, s->v_edge_pos>>1);
-                ff_emulated_edge_mc(uvbuf+16, ptr_cr, s->uvlinesize, 9, 9+field_based,
-                                 uvsrc_x, uvsrc_y<<field_based, s->h_edge_pos>>1, s->v_edge_pos>>1);
-                ptr_cb= uvbuf;
-                ptr_cr= uvbuf+16;
-            }
-    }
-
-    if(bottom_field){ //FIXME use this for field pix too instead of the obnoxious hack which changes picture.data
-        dest_y += s->linesize;
-        dest_cb+= s->uvlinesize;
-        dest_cr+= s->uvlinesize;
-    }
-
-    if(field_select){
-        ptr_y += s->linesize;
-        ptr_cb+= s->uvlinesize;
-        ptr_cr+= s->uvlinesize;
-    }
-
-    pix_op[0][dxy](dest_y, ptr_y, linesize, h);
-
-    if(!(s->flags&CODEC_FLAG_GRAY)){
-        pix_op[s->chroma_x_shift][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift);
-        pix_op[s->chroma_x_shift][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);
-    }
-#if defined(CONFIG_H261_ENCODER) || defined(CONFIG_H261_DECODER)
-    if(s->out_format == FMT_H261){
-        ff_h261_loop_filter(s);
-    }
-#endif
-}
-
-/* apply one mpeg motion vector to the three components */
-static always_inline void mpeg_motion_lowres(MpegEncContext *s,
-                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                               int field_based, int bottom_field, int field_select,
-                               uint8_t **ref_picture, h264_chroma_mc_func *pix_op,
-                               int motion_x, int motion_y, int h)
-{
-    uint8_t *ptr_y, *ptr_cb, *ptr_cr;
-    int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, uvlinesize, linesize, sx, sy, uvsx, uvsy;
-    const int lowres= s->avctx->lowres;
-    const int block_s= 8>>lowres;
-    const int s_mask= (2<<lowres)-1;
-    const int h_edge_pos = s->h_edge_pos >> lowres;
-    const int v_edge_pos = s->v_edge_pos >> lowres;
-    linesize   = s->current_picture.linesize[0] << field_based;
-    uvlinesize = s->current_picture.linesize[1] << field_based;
-
-    if(s->quarter_sample){ //FIXME obviously not perfect but qpel wont work in lowres anyway
-        motion_x/=2;
-        motion_y/=2;
-    }
-
-    if(field_based){
-        motion_y += (bottom_field - field_select)*((1<<lowres)-1);
-    }
-
-    sx= motion_x & s_mask;
-    sy= motion_y & s_mask;
-    src_x = s->mb_x*2*block_s               + (motion_x >> (lowres+1));
-    src_y =(s->mb_y*2*block_s>>field_based) + (motion_y >> (lowres+1));
-
-    if (s->out_format == FMT_H263) {
-        uvsx = ((motion_x>>1) & s_mask) | (sx&1);
-        uvsy = ((motion_y>>1) & s_mask) | (sy&1);
-        uvsrc_x = src_x>>1;
-        uvsrc_y = src_y>>1;
-    }else if(s->out_format == FMT_H261){//even chroma mv's are full pel in H261
-        mx = motion_x / 4;
-        my = motion_y / 4;
-        uvsx = (2*mx) & s_mask;
-        uvsy = (2*my) & s_mask;
-        uvsrc_x = s->mb_x*block_s               + (mx >> lowres);
-        uvsrc_y = s->mb_y*block_s               + (my >> lowres);
-    } else {
-        mx = motion_x / 2;
-        my = motion_y / 2;
-        uvsx = mx & s_mask;
-        uvsy = my & s_mask;
-        uvsrc_x = s->mb_x*block_s               + (mx >> (lowres+1));
-        uvsrc_y =(s->mb_y*block_s>>field_based) + (my >> (lowres+1));
-    }
-
-    ptr_y  = ref_picture[0] + src_y * linesize + src_x;
-    ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
-    ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
-
-    if(   (unsigned)src_x > h_edge_pos                 - (!!sx) - 2*block_s
-       || (unsigned)src_y >(v_edge_pos >> field_based) - (!!sy) - h){
-            ff_emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize, 17, 17+field_based,
-                             src_x, src_y<<field_based, h_edge_pos, v_edge_pos);
-            ptr_y = s->edge_emu_buffer;
-            if(!(s->flags&CODEC_FLAG_GRAY)){
-                uint8_t *uvbuf= s->edge_emu_buffer+18*s->linesize;
-                ff_emulated_edge_mc(uvbuf  , ptr_cb, s->uvlinesize, 9, 9+field_based,
-                                 uvsrc_x, uvsrc_y<<field_based, h_edge_pos>>1, v_edge_pos>>1);
-                ff_emulated_edge_mc(uvbuf+16, ptr_cr, s->uvlinesize, 9, 9+field_based,
-                                 uvsrc_x, uvsrc_y<<field_based, h_edge_pos>>1, v_edge_pos>>1);
-                ptr_cb= uvbuf;
-                ptr_cr= uvbuf+16;
-            }
-    }
-
-    if(bottom_field){ //FIXME use this for field pix too instead of the obnoxious hack which changes picture.data
-        dest_y += s->linesize;
-        dest_cb+= s->uvlinesize;
-        dest_cr+= s->uvlinesize;
-    }
-
-    if(field_select){
-        ptr_y += s->linesize;
-        ptr_cb+= s->uvlinesize;
-        ptr_cr+= s->uvlinesize;
-    }
-
-    sx <<= 2 - lowres;
-    sy <<= 2 - lowres;
-    pix_op[lowres-1](dest_y, ptr_y, linesize, h, sx, sy);
-
-    if(!(s->flags&CODEC_FLAG_GRAY)){
-        uvsx <<= 2 - lowres;
-        uvsy <<= 2 - lowres;
-        pix_op[lowres](dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
-        pix_op[lowres](dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
-    }
-    //FIXME h261 lowres loop filter
-}
-
-//FIXME move to dsputil, avg variant, 16x16 version
-static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride){
-    int x;
-    uint8_t * const top   = src[1];
-    uint8_t * const left  = src[2];
-    uint8_t * const mid   = src[0];
-    uint8_t * const right = src[3];
-    uint8_t * const bottom= src[4];
-#define OBMC_FILTER(x, t, l, m, r, b)\
-    dst[x]= (t*top[x] + l*left[x] + m*mid[x] + r*right[x] + b*bottom[x] + 4)>>3
-#define OBMC_FILTER4(x, t, l, m, r, b)\
-    OBMC_FILTER(x         , t, l, m, r, b);\
-    OBMC_FILTER(x+1       , t, l, m, r, b);\
-    OBMC_FILTER(x  +stride, t, l, m, r, b);\
-    OBMC_FILTER(x+1+stride, t, l, m, r, b);
-
-    x=0;
-    OBMC_FILTER (x  , 2, 2, 4, 0, 0);
-    OBMC_FILTER (x+1, 2, 1, 5, 0, 0);
-    OBMC_FILTER4(x+2, 2, 1, 5, 0, 0);
-    OBMC_FILTER4(x+4, 2, 0, 5, 1, 0);
-    OBMC_FILTER (x+6, 2, 0, 5, 1, 0);
-    OBMC_FILTER (x+7, 2, 0, 4, 2, 0);
-    x+= stride;
-    OBMC_FILTER (x  , 1, 2, 5, 0, 0);
-    OBMC_FILTER (x+1, 1, 2, 5, 0, 0);
-    OBMC_FILTER (x+6, 1, 0, 5, 2, 0);
-    OBMC_FILTER (x+7, 1, 0, 5, 2, 0);
-    x+= stride;
-    OBMC_FILTER4(x  , 1, 2, 5, 0, 0);
-    OBMC_FILTER4(x+2, 1, 1, 6, 0, 0);
-    OBMC_FILTER4(x+4, 1, 0, 6, 1, 0);
-    OBMC_FILTER4(x+6, 1, 0, 5, 2, 0);
-    x+= 2*stride;
-    OBMC_FILTER4(x  , 0, 2, 5, 0, 1);
-    OBMC_FILTER4(x+2, 0, 1, 6, 0, 1);
-    OBMC_FILTER4(x+4, 0, 0, 6, 1, 1);
-    OBMC_FILTER4(x+6, 0, 0, 5, 2, 1);
-    x+= 2*stride;
-    OBMC_FILTER (x  , 0, 2, 5, 0, 1);
-    OBMC_FILTER (x+1, 0, 2, 5, 0, 1);
-    OBMC_FILTER4(x+2, 0, 1, 5, 0, 2);
-    OBMC_FILTER4(x+4, 0, 0, 5, 1, 2);
-    OBMC_FILTER (x+6, 0, 0, 5, 2, 1);
-    OBMC_FILTER (x+7, 0, 0, 5, 2, 1);
-    x+= stride;
-    OBMC_FILTER (x  , 0, 2, 4, 0, 2);
-    OBMC_FILTER (x+1, 0, 1, 5, 0, 2);
-    OBMC_FILTER (x+6, 0, 0, 5, 1, 2);
-    OBMC_FILTER (x+7, 0, 0, 4, 2, 2);
-}
-
-/* obmc for 1 8x8 luma block */
-static inline void obmc_motion(MpegEncContext *s,
-                               uint8_t *dest, uint8_t *src,
-                               int src_x, int src_y,
-                               op_pixels_func *pix_op,
-                               int16_t mv[5][2]/* mid top left right bottom*/)
-#define MID    0
-{
-    int i;
-    uint8_t *ptr[5];
-
-    assert(s->quarter_sample==0);
-
-    for(i=0; i<5; i++){
-        if(i && mv[i][0]==mv[MID][0] && mv[i][1]==mv[MID][1]){
-            ptr[i]= ptr[MID];
-        }else{
-            ptr[i]= s->obmc_scratchpad + 8*(i&1) + s->linesize*8*(i>>1);
-            hpel_motion(s, ptr[i], src, 0, 0,
-                        src_x, src_y,
-                        s->width, s->height, s->linesize,
-                        s->h_edge_pos, s->v_edge_pos,
-                        8, 8, pix_op,
-                        mv[i][0], mv[i][1]);
-        }
-    }
-
-    put_obmc(dest, ptr, s->linesize);
-}
-
-static inline void qpel_motion(MpegEncContext *s,
-                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                               int field_based, int bottom_field, int field_select,
-                               uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
-                               qpel_mc_func (*qpix_op)[16],
-                               int motion_x, int motion_y, int h)
-{
-    uint8_t *ptr_y, *ptr_cb, *ptr_cr;
-    int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos, linesize, uvlinesize;
-
-    dxy = ((motion_y & 3) << 2) | (motion_x & 3);
-    src_x = s->mb_x *  16                 + (motion_x >> 2);
-    src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
-
-    v_edge_pos = s->v_edge_pos >> field_based;
-    linesize = s->linesize << field_based;
-    uvlinesize = s->uvlinesize << field_based;
-
-    if(field_based){
-        mx= motion_x/2;
-        my= motion_y>>1;
-    }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA2){
-        static const int rtab[8]= {0,0,1,1,0,0,0,1};
-        mx= (motion_x>>1) + rtab[motion_x&7];
-        my= (motion_y>>1) + rtab[motion_y&7];
-    }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA){
-        mx= (motion_x>>1)|(motion_x&1);
-        my= (motion_y>>1)|(motion_y&1);
-    }else{
-        mx= motion_x/2;
-        my= motion_y/2;
-    }
-    mx= (mx>>1)|(mx&1);
-    my= (my>>1)|(my&1);
-
-    uvdxy= (mx&1) | ((my&1)<<1);
-    mx>>=1;
-    my>>=1;
-
-    uvsrc_x = s->mb_x *  8                 + mx;
-    uvsrc_y = s->mb_y * (8 >> field_based) + my;
-
-    ptr_y  = ref_picture[0] +   src_y *   linesize +   src_x;
-    ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
-    ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
-
-    if(   (unsigned)src_x > s->h_edge_pos - (motion_x&3) - 16
-       || (unsigned)src_y >    v_edge_pos - (motion_y&3) - h  ){
-        ff_emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize, 17, 17+field_based,
-                         src_x, src_y<<field_based, s->h_edge_pos, s->v_edge_pos);
-        ptr_y= s->edge_emu_buffer;
-        if(!(s->flags&CODEC_FLAG_GRAY)){
-            uint8_t *uvbuf= s->edge_emu_buffer + 18*s->linesize;
-            ff_emulated_edge_mc(uvbuf, ptr_cb, s->uvlinesize, 9, 9 + field_based,
-                             uvsrc_x, uvsrc_y<<field_based, s->h_edge_pos>>1, s->v_edge_pos>>1);
-            ff_emulated_edge_mc(uvbuf + 16, ptr_cr, s->uvlinesize, 9, 9 + field_based,
-                             uvsrc_x, uvsrc_y<<field_based, s->h_edge_pos>>1, s->v_edge_pos>>1);
-            ptr_cb= uvbuf;
-            ptr_cr= uvbuf + 16;
-        }
-    }
-
-    if(!field_based)
-        qpix_op[0][dxy](dest_y, ptr_y, linesize);
-    else{
-        if(bottom_field){
-            dest_y += s->linesize;
-            dest_cb+= s->uvlinesize;
-            dest_cr+= s->uvlinesize;
-        }
-
-        if(field_select){
-            ptr_y  += s->linesize;
-            ptr_cb += s->uvlinesize;
-            ptr_cr += s->uvlinesize;
-        }
-        //damn interlaced mode
-        //FIXME boundary mirroring is not exactly correct here
-        qpix_op[1][dxy](dest_y  , ptr_y  , linesize);
-        qpix_op[1][dxy](dest_y+8, ptr_y+8, linesize);
-    }
-    if(!(s->flags&CODEC_FLAG_GRAY)){
-        pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1);
-        pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1);
-    }
-}
-
-inline int ff_h263_round_chroma(int x){
-    if (x >= 0)
-        return  (h263_chroma_roundtab[x & 0xf] + ((x >> 3) & ~1));
-    else {
-        x = -x;
-        return -(h263_chroma_roundtab[x & 0xf] + ((x >> 3) & ~1));
-    }
-}
-
-/**
- * h263 chorma 4mv motion compensation.
- */
-static inline void chroma_4mv_motion(MpegEncContext *s,
-                                     uint8_t *dest_cb, uint8_t *dest_cr,
-                                     uint8_t **ref_picture,
-                                     op_pixels_func *pix_op,
-                                     int mx, int my){
-    int dxy, emu=0, src_x, src_y, offset;
-    uint8_t *ptr;
-
-    /* In case of 8X8, we construct a single chroma motion vector
-       with a special rounding */
-    mx= ff_h263_round_chroma(mx);
-    my= ff_h263_round_chroma(my);
-
-    dxy = ((my & 1) << 1) | (mx & 1);
-    mx >>= 1;
-    my >>= 1;
-
-    src_x = s->mb_x * 8 + mx;
-    src_y = s->mb_y * 8 + my;
-    src_x = clip(src_x, -8, s->width/2);
-    if (src_x == s->width/2)
-        dxy &= ~1;
-    src_y = clip(src_y, -8, s->height/2);
-    if (src_y == s->height/2)
-        dxy &= ~2;
-
-    offset = (src_y * (s->uvlinesize)) + src_x;
-    ptr = ref_picture[1] + offset;
-    if(s->flags&CODEC_FLAG_EMU_EDGE){
-        if(   (unsigned)src_x > (s->h_edge_pos>>1) - (dxy &1) - 8
-           || (unsigned)src_y > (s->v_edge_pos>>1) - (dxy>>1) - 8){
-            ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
-            ptr= s->edge_emu_buffer;
-            emu=1;
-        }
-    }
-    pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);
-
-    ptr = ref_picture[2] + offset;
-    if(emu){
-        ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
-        ptr= s->edge_emu_buffer;
-    }
-    pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
-}
-
-static inline void chroma_4mv_motion_lowres(MpegEncContext *s,
-                                     uint8_t *dest_cb, uint8_t *dest_cr,
-                                     uint8_t **ref_picture,
-                                     h264_chroma_mc_func *pix_op,
-                                     int mx, int my){
-    const int lowres= s->avctx->lowres;
-    const int block_s= 8>>lowres;
-    const int s_mask= (2<<lowres)-1;
-    const int h_edge_pos = s->h_edge_pos >> (lowres+1);
-    const int v_edge_pos = s->v_edge_pos >> (lowres+1);
-    int emu=0, src_x, src_y, offset, sx, sy;
-    uint8_t *ptr;
-
-    if(s->quarter_sample){
-        mx/=2;
-        my/=2;
-    }
-
-    /* In case of 8X8, we construct a single chroma motion vector
-       with a special rounding */
-    mx= ff_h263_round_chroma(mx);
-    my= ff_h263_round_chroma(my);
-
-    sx= mx & s_mask;
-    sy= my & s_mask;
-    src_x = s->mb_x*block_s + (mx >> (lowres+1));
-    src_y = s->mb_y*block_s + (my >> (lowres+1));
-
-    offset = src_y * s->uvlinesize + src_x;
-    ptr = ref_picture[1] + offset;
-    if(s->flags&CODEC_FLAG_EMU_EDGE){
-        if(   (unsigned)src_x > h_edge_pos - (!!sx) - block_s
-           || (unsigned)src_y > v_edge_pos - (!!sy) - block_s){
-            ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, src_x, src_y, h_edge_pos, v_edge_pos);
-            ptr= s->edge_emu_buffer;
-            emu=1;
-        }
-    }
-    sx <<= 2 - lowres;
-    sy <<= 2 - lowres;
-    pix_op[lowres](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
-
-    ptr = ref_picture[2] + offset;
-    if(emu){
-        ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, src_x, src_y, h_edge_pos, v_edge_pos);
-        ptr= s->edge_emu_buffer;
-    }
-    pix_op[lowres](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
-}
-
-static inline void prefetch_motion(MpegEncContext *s, uint8_t **pix, int dir){
-    /* fetch pixels for estimated mv 4 macroblocks ahead
-     * optimized for 64byte cache lines */
-    const int shift = s->quarter_sample ? 2 : 1;
-    const int mx= (s->mv[dir][0][0]>>shift) + 16*s->mb_x + 8;
-    const int my= (s->mv[dir][0][1]>>shift) + 16*s->mb_y;
-    int off= mx + (my + (s->mb_x&3)*4)*s->linesize + 64;
-    s->dsp.prefetch(pix[0]+off, s->linesize, 4);
-    off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
-    s->dsp.prefetch(pix[1]+off, pix[2]-pix[1], 2);
-}
-
-/**
- * motion compensation of a single macroblock
- * @param s context
- * @param dest_y luma destination pointer
- * @param dest_cb chroma cb/u destination pointer
- * @param dest_cr chroma cr/v destination pointer
- * @param dir direction (0->forward, 1->backward)
- * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
- * @param pic_op halfpel motion compensation function (average or put normally)
- * @param pic_op qpel motion compensation function (average or put normally)
- * the motion vectors are taken from s->mv and the MV type from s->mv_type
- */
-static inline void MPV_motion(MpegEncContext *s,
-                              uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                              int dir, uint8_t **ref_picture,
-                              op_pixels_func (*pix_op)[4], qpel_mc_func (*qpix_op)[16])
-{
-    int dxy, mx, my, src_x, src_y, motion_x, motion_y;
-    int mb_x, mb_y, i;
-    uint8_t *ptr, *dest;
-
-    mb_x = s->mb_x;
-    mb_y = s->mb_y;
-
-    prefetch_motion(s, ref_picture, dir);
-
-    if(s->obmc && s->pict_type != B_TYPE){
-        int16_t mv_cache[4][4][2];
-        const int xy= s->mb_x + s->mb_y*s->mb_stride;
-        const int mot_stride= s->b8_stride;
-        const int mot_xy= mb_x*2 + mb_y*2*mot_stride;
-
-        assert(!s->mb_skipped);
-
-        memcpy(mv_cache[1][1], s->current_picture.motion_val[0][mot_xy           ], sizeof(int16_t)*4);
-        memcpy(mv_cache[2][1], s->current_picture.motion_val[0][mot_xy+mot_stride], sizeof(int16_t)*4);
-        memcpy(mv_cache[3][1], s->current_picture.motion_val[0][mot_xy+mot_stride], sizeof(int16_t)*4);
-
-        if(mb_y==0 || IS_INTRA(s->current_picture.mb_type[xy-s->mb_stride])){
-            memcpy(mv_cache[0][1], mv_cache[1][1], sizeof(int16_t)*4);
-        }else{
-            memcpy(mv_cache[0][1], s->current_picture.motion_val[0][mot_xy-mot_stride], sizeof(int16_t)*4);
-        }
-
-        if(mb_x==0 || IS_INTRA(s->current_picture.mb_type[xy-1])){
-            *(int32_t*)mv_cache[1][0]= *(int32_t*)mv_cache[1][1];
-            *(int32_t*)mv_cache[2][0]= *(int32_t*)mv_cache[2][1];
-        }else{
-            *(int32_t*)mv_cache[1][0]= *(int32_t*)s->current_picture.motion_val[0][mot_xy-1];
-            *(int32_t*)mv_cache[2][0]= *(int32_t*)s->current_picture.motion_val[0][mot_xy-1+mot_stride];
-        }
-
-        if(mb_x+1>=s->mb_width || IS_INTRA(s->current_picture.mb_type[xy+1])){
-            *(int32_t*)mv_cache[1][3]= *(int32_t*)mv_cache[1][2];
-            *(int32_t*)mv_cache[2][3]= *(int32_t*)mv_cache[2][2];
-        }else{
-            *(int32_t*)mv_cache[1][3]= *(int32_t*)s->current_picture.motion_val[0][mot_xy+2];
-            *(int32_t*)mv_cache[2][3]= *(int32_t*)s->current_picture.motion_val[0][mot_xy+2+mot_stride];
-        }
-
-        mx = 0;
-        my = 0;
-        for(i=0;i<4;i++) {
-            const int x= (i&1)+1;
-            const int y= (i>>1)+1;
-            int16_t mv[5][2]= {
-                {mv_cache[y][x  ][0], mv_cache[y][x  ][1]},
-                {mv_cache[y-1][x][0], mv_cache[y-1][x][1]},
-                {mv_cache[y][x-1][0], mv_cache[y][x-1][1]},
-                {mv_cache[y][x+1][0], mv_cache[y][x+1][1]},
-                {mv_cache[y+1][x][0], mv_cache[y+1][x][1]}};
-            //FIXME cleanup
-            obmc_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
-                        ref_picture[0],
-                        mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
-                        pix_op[1],
-                        mv);
-
-            mx += mv[0][0];
-            my += mv[0][1];
-        }
-        if(!(s->flags&CODEC_FLAG_GRAY))
-            chroma_4mv_motion(s, dest_cb, dest_cr, ref_picture, pix_op[1], mx, my);
-
-        return;
-    }
-
-    switch(s->mv_type) {
-    case MV_TYPE_16X16:
-        if(s->mcsel){
-            if(s->real_sprite_warping_points==1){
-                gmc1_motion(s, dest_y, dest_cb, dest_cr,
-                            ref_picture);
-            }else{
-                gmc_motion(s, dest_y, dest_cb, dest_cr,
-                            ref_picture);
-            }
-        }else if(s->quarter_sample){
-            qpel_motion(s, dest_y, dest_cb, dest_cr,
-                        0, 0, 0,
-                        ref_picture, pix_op, qpix_op,
-                        s->mv[dir][0][0], s->mv[dir][0][1], 16);
-        }else if(s->mspel){
-            ff_mspel_motion(s, dest_y, dest_cb, dest_cr,
-                        ref_picture, pix_op,
-                        s->mv[dir][0][0], s->mv[dir][0][1], 16);
-        }else
-        {
-            mpeg_motion(s, dest_y, dest_cb, dest_cr,
-                        0, 0, 0,
-                        ref_picture, pix_op,
-                        s->mv[dir][0][0], s->mv[dir][0][1], 16);
-        }
-        break;
-    case MV_TYPE_8X8:
-        mx = 0;
-        my = 0;
-        if(s->quarter_sample){
-            for(i=0;i<4;i++) {
-                motion_x = s->mv[dir][i][0];
-                motion_y = s->mv[dir][i][1];
-
-                dxy = ((motion_y & 3) << 2) | (motion_x & 3);
-                src_x = mb_x * 16 + (motion_x >> 2) + (i & 1) * 8;
-                src_y = mb_y * 16 + (motion_y >> 2) + (i >>1) * 8;
-
-                /* WARNING: do no forget half pels */
-                src_x = clip(src_x, -16, s->width);
-                if (src_x == s->width)
-                    dxy &= ~3;
-                src_y = clip(src_y, -16, s->height);
-                if (src_y == s->height)
-                    dxy &= ~12;
-
-                ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
-                if(s->flags&CODEC_FLAG_EMU_EDGE){
-                    if(   (unsigned)src_x > s->h_edge_pos - (motion_x&3) - 8
-                       || (unsigned)src_y > s->v_edge_pos - (motion_y&3) - 8 ){
-                        ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->linesize, 9, 9, src_x, src_y, s->h_edge_pos, s->v_edge_pos);
-                        ptr= s->edge_emu_buffer;
-                    }
-                }
-                dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
-                qpix_op[1][dxy](dest, ptr, s->linesize);
-
-                mx += s->mv[dir][i][0]/2;
-                my += s->mv[dir][i][1]/2;
-            }
-        }else{
-            for(i=0;i<4;i++) {
-                hpel_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
-                            ref_picture[0], 0, 0,
-                            mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
-                            s->width, s->height, s->linesize,
-                            s->h_edge_pos, s->v_edge_pos,
-                            8, 8, pix_op[1],
-                            s->mv[dir][i][0], s->mv[dir][i][1]);
-
-                mx += s->mv[dir][i][0];
-                my += s->mv[dir][i][1];
-            }
-        }
-
-        if(!(s->flags&CODEC_FLAG_GRAY))
-            chroma_4mv_motion(s, dest_cb, dest_cr, ref_picture, pix_op[1], mx, my);
-        break;
-    case MV_TYPE_FIELD:
-        if (s->picture_structure == PICT_FRAME) {
-            if(s->quarter_sample){
-                for(i=0; i<2; i++){
-                    qpel_motion(s, dest_y, dest_cb, dest_cr,
-                                1, i, s->field_select[dir][i],
-                                ref_picture, pix_op, qpix_op,
-                                s->mv[dir][i][0], s->mv[dir][i][1], 8);
-                }
-            }else{
-                /* top field */
-                mpeg_motion(s, dest_y, dest_cb, dest_cr,
-                            1, 0, s->field_select[dir][0],
-                            ref_picture, pix_op,
-                            s->mv[dir][0][0], s->mv[dir][0][1], 8);
-                /* bottom field */
-                mpeg_motion(s, dest_y, dest_cb, dest_cr,
-                            1, 1, s->field_select[dir][1],
-                            ref_picture, pix_op,
-                            s->mv[dir][1][0], s->mv[dir][1][1], 8);
-            }
-        } else {
-            if(s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != B_TYPE && !s->first_field){
-                ref_picture= s->current_picture_ptr->data;
-            }
-
-            mpeg_motion(s, dest_y, dest_cb, dest_cr,
-                        0, 0, s->field_select[dir][0],
-                        ref_picture, pix_op,
-                        s->mv[dir][0][0], s->mv[dir][0][1], 16);
-        }
-        break;
-    case MV_TYPE_16X8:
-        for(i=0; i<2; i++){
-            uint8_t ** ref2picture;
-
-            if(s->picture_structure == s->field_select[dir][i] + 1 || s->pict_type == B_TYPE || s->first_field){
-                ref2picture= ref_picture;
-            }else{
-                ref2picture= s->current_picture_ptr->data;
-            }
-
-            mpeg_motion(s, dest_y, dest_cb, dest_cr,
-                        0, 0, s->field_select[dir][i],
-                        ref2picture, pix_op,
-                        s->mv[dir][i][0], s->mv[dir][i][1] + 16*i, 8);
-
-            dest_y += 16*s->linesize;
-            dest_cb+= (16>>s->chroma_y_shift)*s->uvlinesize;
-            dest_cr+= (16>>s->chroma_y_shift)*s->uvlinesize;
-        }
-        break;
-    case MV_TYPE_DMV:
-        if(s->picture_structure == PICT_FRAME){
-            for(i=0; i<2; i++){
-                int j;
-                for(j=0; j<2; j++){
-                    mpeg_motion(s, dest_y, dest_cb, dest_cr,
-                                1, j, j^i,
-                                ref_picture, pix_op,
-                                s->mv[dir][2*i + j][0], s->mv[dir][2*i + j][1], 8);
-                }
-                pix_op = s->dsp.avg_pixels_tab;
-            }
-        }else{
-            for(i=0; i<2; i++){
-                mpeg_motion(s, dest_y, dest_cb, dest_cr,
-                            0, 0, s->picture_structure != i+1,
-                            ref_picture, pix_op,
-                            s->mv[dir][2*i][0],s->mv[dir][2*i][1],16);
-
-                // after put we make avg of the same block
-                pix_op=s->dsp.avg_pixels_tab;
-
-                //opposite parity is always in the same frame if this is second field
-                if(!s->first_field){
-                    ref_picture = s->current_picture_ptr->data;
-                }
-            }
-        }
-    break;
-    default: assert(0);
-    }
-}
-
-/**
- * motion compensation of a single macroblock
- * @param s context
- * @param dest_y luma destination pointer
- * @param dest_cb chroma cb/u destination pointer
- * @param dest_cr chroma cr/v destination pointer
- * @param dir direction (0->forward, 1->backward)
- * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
- * @param pic_op halfpel motion compensation function (average or put normally)
- * the motion vectors are taken from s->mv and the MV type from s->mv_type
- */
-static inline void MPV_motion_lowres(MpegEncContext *s,
-                              uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                              int dir, uint8_t **ref_picture,
-                              h264_chroma_mc_func *pix_op)
-{
-    int mx, my;
-    int mb_x, mb_y, i;
-    const int lowres= s->avctx->lowres;
-    const int block_s= 8>>lowres;
-
-    mb_x = s->mb_x;
-    mb_y = s->mb_y;
-
-    switch(s->mv_type) {
-    case MV_TYPE_16X16:
-        mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
-                    0, 0, 0,
-                    ref_picture, pix_op,
-                    s->mv[dir][0][0], s->mv[dir][0][1], 2*block_s);
-        break;
-    case MV_TYPE_8X8:
-        mx = 0;
-        my = 0;
-            for(i=0;i<4;i++) {
-                hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) * s->linesize)*block_s,
-                            ref_picture[0], 0, 0,
-                            (2*mb_x + (i & 1))*block_s, (2*mb_y + (i >>1))*block_s,
-                            s->width, s->height, s->linesize,
-                            s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
-                            block_s, block_s, pix_op,
-                            s->mv[dir][i][0], s->mv[dir][i][1]);
-
-                mx += s->mv[dir][i][0];
-                my += s->mv[dir][i][1];
-            }
-
-        if(!(s->flags&CODEC_FLAG_GRAY))
-            chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture, pix_op, mx, my);
-        break;
-    case MV_TYPE_FIELD:
-        if (s->picture_structure == PICT_FRAME) {
-            /* top field */
-            mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
-                        1, 0, s->field_select[dir][0],
-                        ref_picture, pix_op,
-                        s->mv[dir][0][0], s->mv[dir][0][1], block_s);
-            /* bottom field */
-            mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
-                        1, 1, s->field_select[dir][1],
-                        ref_picture, pix_op,
-                        s->mv[dir][1][0], s->mv[dir][1][1], block_s);
-        } else {
-            if(s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != B_TYPE && !s->first_field){
-                ref_picture= s->current_picture_ptr->data;
-            }
-
-            mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
-                        0, 0, s->field_select[dir][0],
-                        ref_picture, pix_op,
-                        s->mv[dir][0][0], s->mv[dir][0][1], 2*block_s);
-        }
-        break;
-    case MV_TYPE_16X8:
-        for(i=0; i<2; i++){
-            uint8_t ** ref2picture;
-
-            if(s->picture_structure == s->field_select[dir][i] + 1 || s->pict_type == B_TYPE || s->first_field){
-                ref2picture= ref_picture;
-            }else{
-                ref2picture= s->current_picture_ptr->data;
-            }
-
-            mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
-                        0, 0, s->field_select[dir][i],
-                        ref2picture, pix_op,
-                        s->mv[dir][i][0], s->mv[dir][i][1] + 2*block_s*i, block_s);
-
-            dest_y += 2*block_s*s->linesize;
-            dest_cb+= (2*block_s>>s->chroma_y_shift)*s->uvlinesize;
-            dest_cr+= (2*block_s>>s->chroma_y_shift)*s->uvlinesize;
-        }
-        break;
-    case MV_TYPE_DMV:
-        if(s->picture_structure == PICT_FRAME){
-            for(i=0; i<2; i++){
-                int j;
-                for(j=0; j<2; j++){
-                    mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
-                                1, j, j^i,
-                                ref_picture, pix_op,
-                                s->mv[dir][2*i + j][0], s->mv[dir][2*i + j][1], block_s);
-                }
-                pix_op = s->dsp.avg_h264_chroma_pixels_tab;
-            }
-        }else{
-            for(i=0; i<2; i++){
-                mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
-                            0, 0, s->picture_structure != i+1,
-                            ref_picture, pix_op,
-                            s->mv[dir][2*i][0],s->mv[dir][2*i][1],2*block_s);
-
-                // after put we make avg of the same block
-                pix_op = s->dsp.avg_h264_chroma_pixels_tab;
-
-                //opposite parity is always in the same frame if this is second field
-                if(!s->first_field){
-                    ref_picture = s->current_picture_ptr->data;
-                }
-            }
-        }
-    break;
-    default: assert(0);
-    }
-}
-
-/* put block[] to dest[] */
-static inline void put_dct(MpegEncContext *s,
-                           DCTELEM *block, int i, uint8_t *dest, int line_size, int qscale)
-{
-    s->dct_unquantize_intra(s, block, i, qscale);
-    s->dsp.idct_put (dest, line_size, block);
-}
-
-/* add block[] to dest[] */
-static inline void add_dct(MpegEncContext *s,
-                           DCTELEM *block, int i, uint8_t *dest, int line_size)
-{
-    if (s->block_last_index[i] >= 0) {
-        s->dsp.idct_add (dest, line_size, block);
-    }
-}
-
-static inline void add_dequant_dct(MpegEncContext *s,
-                           DCTELEM *block, int i, uint8_t *dest, int line_size, int qscale)
-{
-    if (s->block_last_index[i] >= 0) {
-        s->dct_unquantize_inter(s, block, i, qscale);
-
-        s->dsp.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->b8_stride;
-    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_t));
-    memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
-    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->mb_stride;
-    xy = s->mb_x + s->mb_y * wrap;
-    s->dc_val[1][xy] =
-    s->dc_val[2][xy] = 1024;
-    /* ac pred */
-    memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
-    memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
-
-    s->mbintra_table[xy]= 0;
-}
-
-/* generic function called after a macroblock has been parsed by the
-   decoder or after it has been encoded by the encoder.
-
-   Important variables used:
-   s->mb_intra : true if intra macroblock
-   s->mv_dir   : motion vector direction
-   s->mv_type  : motion vector type
-   s->mv       : motion vector
-   s->interlaced_dct : true if interlaced dct used (mpeg2)
- */
-static always_inline void MPV_decode_mb_internal(MpegEncContext *s, DCTELEM block[12][64], int lowres_flag)
-{
-    int mb_x, mb_y;
-    const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
-#ifdef HAVE_XVMC
-    if(s->avctx->xvmc_acceleration){
-        XVMC_decode_mb(s);//xvmc uses pblocks
-        return;
-    }
-#endif
-
-    mb_x = s->mb_x;
-    mb_y = s->mb_y;
-
-    if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
-       /* save DCT coefficients */
-       int i,j;
-       DCTELEM *dct = &s->current_picture.dct_coeff[mb_xy*64*6];
-       for(i=0; i<6; i++)
-           for(j=0; j<64; j++)
-               *dct++ = block[i][s->dsp.idct_permutation[j]];
-    }
-
-    s->current_picture.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_xy])
-                ff_clean_intra_table_entries(s);
-        } else {
-            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_xy]=1;
-
-    if ((s->flags&CODEC_FLAG_PSNR) || !(s->encoding && (s->intra_only || s->pict_type==B_TYPE))) { //FIXME precalc
-        uint8_t *dest_y, *dest_cb, *dest_cr;
-        int dct_linesize, dct_offset;
-        op_pixels_func (*op_pix)[4];
-        qpel_mc_func (*op_qpix)[16];
-        const int linesize= s->current_picture.linesize[0]; //not s->linesize as this would be wrong for field pics
-        const int uvlinesize= s->current_picture.linesize[1];
-        const int readable= s->pict_type != B_TYPE || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
-        const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
-
-        /* avoid copy if macroblock skipped in last frame too */
-        /* skip only during decoding as we might trash the buffers during encoding a bit */
-        if(!s->encoding){
-            uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
-            const int age= s->current_picture.age;
-
-            assert(age);
-
-            if (s->mb_skipped) {
-                s->mb_skipped= 0;
-                assert(s->pict_type!=I_TYPE);
-
-                (*mbskip_ptr) ++; /* indicate that this time we skipped it */
-                if(*mbskip_ptr >99) *mbskip_ptr= 99;
-
-                /* if previous was skipped too, then nothing to do !  */
-                if (*mbskip_ptr >= age && s->current_picture.reference){
-                    return;
-                }
-            } else if(!s->current_picture.reference){
-                (*mbskip_ptr) ++; /* increase counter so the age can be compared cleanly */
-                if(*mbskip_ptr >99) *mbskip_ptr= 99;
-            } else{
-                *mbskip_ptr = 0; /* not skipped */
-            }
-        }
-
-        dct_linesize = linesize << s->interlaced_dct;
-        dct_offset =(s->interlaced_dct)? linesize : linesize*block_size;
-
-        if(readable){
-            dest_y=  s->dest[0];
-            dest_cb= s->dest[1];
-            dest_cr= s->dest[2];
-        }else{
-            dest_y = s->b_scratchpad;
-            dest_cb= s->b_scratchpad+16*linesize;
-            dest_cr= s->b_scratchpad+32*linesize;
-        }
-
-        if (!s->mb_intra) {
-            /* motion handling */
-            /* decoding or more than one mb_type (MC was already done otherwise) */
-            if(!s->encoding){
-                if(lowres_flag){
-                    h264_chroma_mc_func *op_pix = s->dsp.put_h264_chroma_pixels_tab;
-
-                    if (s->mv_dir & MV_DIR_FORWARD) {
-                        MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix);
-                        op_pix = s->dsp.avg_h264_chroma_pixels_tab;
-                    }
-                    if (s->mv_dir & MV_DIR_BACKWARD) {
-                        MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix);
-                    }
-                }else{
-                    op_qpix= s->me.qpel_put;
-                    if ((!s->no_rounding) || s->pict_type==B_TYPE){
-                        op_pix = s->dsp.put_pixels_tab;
-                    }else{
-                        op_pix = s->dsp.put_no_rnd_pixels_tab;
-                    }
-                    if (s->mv_dir & MV_DIR_FORWARD) {
-                        MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix, op_qpix);
-                        op_pix = s->dsp.avg_pixels_tab;
-                        op_qpix= s->me.qpel_avg;
-                    }
-                    if (s->mv_dir & MV_DIR_BACKWARD) {
-                        MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix, op_qpix);
-                    }
-                }
-            }
-
-            /* skip dequant / idct if we are really late ;) */
-            if(s->hurry_up>1) goto skip_idct;
-            if(s->avctx->skip_idct){
-                if(  (s->avctx->skip_idct >= AVDISCARD_NONREF && s->pict_type == B_TYPE)
-                   ||(s->avctx->skip_idct >= AVDISCARD_NONKEY && s->pict_type != I_TYPE)
-                   || s->avctx->skip_idct >= AVDISCARD_ALL)
-                    goto skip_idct;
-            }
-
-            /* add dct residue */
-            if(s->encoding || !(   s->h263_msmpeg4 || s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO
-                                || (s->codec_id==CODEC_ID_MPEG4 && !s->mpeg_quant))){
-                add_dequant_dct(s, block[0], 0, dest_y                          , dct_linesize, s->qscale);
-                add_dequant_dct(s, block[1], 1, dest_y              + block_size, dct_linesize, s->qscale);
-                add_dequant_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize, s->qscale);
-                add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
-
-                if(!(s->flags&CODEC_FLAG_GRAY)){
-                    if (s->chroma_y_shift){
-                        add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
-                        add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
-                    }else{
-                        dct_linesize >>= 1;
-                        dct_offset >>=1;
-                        add_dequant_dct(s, block[4], 4, dest_cb,              dct_linesize, s->chroma_qscale);
-                        add_dequant_dct(s, block[5], 5, dest_cr,              dct_linesize, s->chroma_qscale);
-                        add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
-                        add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
-                    }
-                }
-            } else if(s->codec_id != CODEC_ID_WMV2){
-                add_dct(s, block[0], 0, dest_y                          , dct_linesize);
-                add_dct(s, block[1], 1, dest_y              + block_size, dct_linesize);
-                add_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize);
-                add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
-
-                if(!(s->flags&CODEC_FLAG_GRAY)){
-                    if(s->chroma_y_shift){//Chroma420
-                        add_dct(s, block[4], 4, dest_cb, uvlinesize);
-                        add_dct(s, block[5], 5, dest_cr, uvlinesize);
-                    }else{
-                        //chroma422
-                        dct_linesize = uvlinesize << s->interlaced_dct;
-                        dct_offset =(s->interlaced_dct)? uvlinesize : uvlinesize*8;
-
-                        add_dct(s, block[4], 4, dest_cb, dct_linesize);
-                        add_dct(s, block[5], 5, dest_cr, dct_linesize);
-                        add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
-                        add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
-                        if(!s->chroma_x_shift){//Chroma444
-                            add_dct(s, block[8], 8, dest_cb+8, dct_linesize);
-                            add_dct(s, block[9], 9, dest_cr+8, dct_linesize);
-                            add_dct(s, block[10], 10, dest_cb+8+dct_offset, dct_linesize);
-                            add_dct(s, block[11], 11, dest_cr+8+dct_offset, dct_linesize);
-                        }
-                    }
-                }//fi gray
-            }
-            else{
-                ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
-            }
-        } else {
-            /* dct only in intra block */
-            if(s->encoding || !(s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO)){
-                put_dct(s, block[0], 0, dest_y                          , dct_linesize, s->qscale);
-                put_dct(s, block[1], 1, dest_y              + block_size, dct_linesize, s->qscale);
-                put_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize, s->qscale);
-                put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
-
-                if(!(s->flags&CODEC_FLAG_GRAY)){
-                    if(s->chroma_y_shift){
-                        put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
-                        put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
-                    }else{
-                        dct_offset >>=1;
-                        dct_linesize >>=1;
-                        put_dct(s, block[4], 4, dest_cb,              dct_linesize, s->chroma_qscale);
-                        put_dct(s, block[5], 5, dest_cr,              dct_linesize, s->chroma_qscale);
-                        put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
-                        put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
-                    }
-                }
-            }else{
-                s->dsp.idct_put(dest_y                          , dct_linesize, block[0]);
-                s->dsp.idct_put(dest_y              + block_size, dct_linesize, block[1]);
-                s->dsp.idct_put(dest_y + dct_offset             , dct_linesize, block[2]);
-                s->dsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
-
-                if(!(s->flags&CODEC_FLAG_GRAY)){
-                    if(s->chroma_y_shift){
-                        s->dsp.idct_put(dest_cb, uvlinesize, block[4]);
-                        s->dsp.idct_put(dest_cr, uvlinesize, block[5]);
-                    }else{
-
-                        dct_linesize = uvlinesize << s->interlaced_dct;
-                        dct_offset =(s->interlaced_dct)? uvlinesize : uvlinesize*8;
-
-                        s->dsp.idct_put(dest_cb,              dct_linesize, block[4]);
-                        s->dsp.idct_put(dest_cr,              dct_linesize, block[5]);
-                        s->dsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
-                        s->dsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
-                        if(!s->chroma_x_shift){//Chroma444
-                            s->dsp.idct_put(dest_cb + 8,              dct_linesize, block[8]);
-                            s->dsp.idct_put(dest_cr + 8,              dct_linesize, block[9]);
-                            s->dsp.idct_put(dest_cb + 8 + dct_offset, dct_linesize, block[10]);
-                            s->dsp.idct_put(dest_cr + 8 + dct_offset, dct_linesize, block[11]);
-                        }
-                    }
-                }//gray
-            }
-        }
-skip_idct:
-        if(!readable){
-            s->dsp.put_pixels_tab[0][0](s->dest[0], dest_y ,   linesize,16);
-            s->dsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
-            s->dsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
-        }
-    }
-}
-
-void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]){
-    if(s->avctx->lowres) MPV_decode_mb_internal(s, block, 1);
-    else                  MPV_decode_mb_internal(s, block, 0);
-}
-
-#ifdef CONFIG_ENCODERS
-
-static inline void dct_single_coeff_elimination(MpegEncContext *s, int n, int threshold)
-{
-    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];
-    int skip_dc;
-
-    if(threshold<0){
-        skip_dc=0;
-        threshold= -threshold;
-    }else
-        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 = s->intra_scantable.permutated[i];
-        const int level = FFABS(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 = s->intra_scantable.permutated[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;
-    const int maxlevel= s->max_qcoeff;
-    const int minlevel= s->min_qcoeff;
-    int overflow=0;
-
-    if(s->mb_intra){
-        i=1; //skip clipping of intra dc
-    }else
-        i=0;
-
-    for(;i<=last_index; i++){
-        const int j= s->intra_scantable.permutated[i];
-        int level = block[j];
-
-        if     (level>maxlevel){
-            level=maxlevel;
-            overflow++;
-        }else if(level<minlevel){
-            level=minlevel;
-            overflow++;
-        }
-
-        block[j]= level;
-    }
-
-    if(overflow && s->avctx->mb_decision == FF_MB_DECISION_SIMPLE)
-        av_log(s->avctx, AV_LOG_INFO, "warning, clipping %d dct coefficients to %d..%d\n", overflow, minlevel, maxlevel);
-}
-
-#endif //CONFIG_ENCODERS
-
-/**
- *
- * @param h is the normal height, this will be reduced automatically if needed for the last row
- */
-void ff_draw_horiz_band(MpegEncContext *s, int y, int h){
-    if (s->avctx->draw_horiz_band) {
-        AVFrame *src;
-        int offset[4];
-
-        if(s->picture_structure != PICT_FRAME){
-            h <<= 1;
-            y <<= 1;
-            if(s->first_field  && !(s->avctx->slice_flags&SLICE_FLAG_ALLOW_FIELD)) return;
-        }
-
-        h= FFMIN(h, s->avctx->height - y);
-
-        if(s->pict_type==B_TYPE || s->low_delay || (s->avctx->slice_flags&SLICE_FLAG_CODED_ORDER))
-            src= (AVFrame*)s->current_picture_ptr;
-        else if(s->last_picture_ptr)
-            src= (AVFrame*)s->last_picture_ptr;
-        else
-            return;
-
-        if(s->pict_type==B_TYPE && s->picture_structure == PICT_FRAME && s->out_format != FMT_H264){
-            offset[0]=
-            offset[1]=
-            offset[2]=
-            offset[3]= 0;
-        }else{
-            offset[0]= y * s->linesize;;
-            offset[1]=
-            offset[2]= (y >> s->chroma_y_shift) * s->uvlinesize;
-            offset[3]= 0;
-        }
-
-        emms_c();
-
-        s->avctx->draw_horiz_band(s->avctx, src, offset,
-                                  y, s->picture_structure, h);
-    }
-}
-
-void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
-    const int linesize= s->current_picture.linesize[0]; //not s->linesize as this would be wrong for field pics
-    const int uvlinesize= s->current_picture.linesize[1];
-    const int mb_size= 4 - s->avctx->lowres;
-
-    s->block_index[0]= s->b8_stride*(s->mb_y*2    ) - 2 + s->mb_x*2;
-    s->block_index[1]= s->b8_stride*(s->mb_y*2    ) - 1 + s->mb_x*2;
-    s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
-    s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
-    s->block_index[4]= s->mb_stride*(s->mb_y + 1)                + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
-    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;
-    //block_index is not used by mpeg2, so it is not affected by chroma_format
-
-    s->dest[0] = s->current_picture.data[0] + ((s->mb_x - 1) << mb_size);
-    s->dest[1] = s->current_picture.data[1] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
-    s->dest[2] = s->current_picture.data[2] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
-
-    if(!(s->pict_type==B_TYPE && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME))
-    {
-        s->dest[0] += s->mb_y *   linesize << mb_size;
-        s->dest[1] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
-        s->dest[2] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
-    }
-}
-
-#ifdef CONFIG_ENCODERS
-
-static void get_vissual_weight(int16_t *weight, uint8_t *ptr, int stride){
-    int x, y;
-//FIXME optimize
-    for(y=0; y<8; y++){
-        for(x=0; x<8; x++){
-            int x2, y2;
-            int sum=0;
-            int sqr=0;
-            int count=0;
-
-            for(y2= FFMAX(y-1, 0); y2 < FFMIN(8, y+2); y2++){
-                for(x2= FFMAX(x-1, 0); x2 < FFMIN(8, x+2); x2++){
-                    int v= ptr[x2 + y2*stride];
-                    sum += v;
-                    sqr += v*v;
-                    count++;
-                }
-            }
-            weight[x + 8*y]= (36*ff_sqrt(count*sqr - sum*sum)) / count;
-        }
-    }
-}
-
-static always_inline void encode_mb_internal(MpegEncContext *s, int motion_x, int motion_y, int mb_block_height, int mb_block_count)
-{
-    int16_t weight[8][64];
-    DCTELEM orig[8][64];
-    const int mb_x= s->mb_x;
-    const int mb_y= s->mb_y;
-    int i;
-    int skip_dct[8];
-    int dct_offset   = s->linesize*8; //default for progressive frames
-    uint8_t *ptr_y, *ptr_cb, *ptr_cr;
-    int wrap_y, wrap_c;
-
-    for(i=0; i<mb_block_count; i++) skip_dct[i]=0;
-
-    if(s->adaptive_quant){
-        const int last_qp= s->qscale;
-        const int mb_xy= mb_x + mb_y*s->mb_stride;
-
-        s->lambda= s->lambda_table[mb_xy];
-        update_qscale(s);
-
-        if(!(s->flags&CODEC_FLAG_QP_RD)){
-            s->dquant= s->qscale - last_qp;
-
-            if(s->out_format==FMT_H263){
-                s->dquant= clip(s->dquant, -2, 2); //FIXME RD
-
-                if(s->codec_id==CODEC_ID_MPEG4){
-                    if(!s->mb_intra){
-                        if(s->pict_type == B_TYPE){
-                            if(s->dquant&1)
-                                s->dquant= (s->dquant/2)*2;
-                            if(s->mv_dir&MV_DIRECT)
-                                s->dquant= 0;
-                        }
-                        if(s->mv_type==MV_TYPE_8X8)
-                            s->dquant=0;
-                    }
-                }
-            }
-        }
-        ff_set_qscale(s, last_qp + s->dquant);
-    }else if(s->flags&CODEC_FLAG_QP_RD)
-        ff_set_qscale(s, s->qscale + s->dquant);
-
-    wrap_y = s->linesize;
-    wrap_c = s->uvlinesize;
-    ptr_y = s->new_picture.data[0] + (mb_y * 16 * wrap_y) + mb_x * 16;
-    ptr_cb = s->new_picture.data[1] + (mb_y * mb_block_height * wrap_c) + mb_x * 8;
-    ptr_cr = s->new_picture.data[2] + (mb_y * mb_block_height * wrap_c) + mb_x * 8;
-
-    if(mb_x*16+16 > s->width || mb_y*16+16 > s->height){
-        uint8_t *ebuf= s->edge_emu_buffer + 32;
-        ff_emulated_edge_mc(ebuf            , ptr_y , wrap_y,16,16,mb_x*16,mb_y*16, s->width   , s->height);
-        ptr_y= ebuf;
-        ff_emulated_edge_mc(ebuf+18*wrap_y  , ptr_cb, wrap_c, 8, mb_block_height, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
-        ptr_cb= ebuf+18*wrap_y;
-        ff_emulated_edge_mc(ebuf+18*wrap_y+8, ptr_cr, wrap_c, 8, mb_block_height, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
-        ptr_cr= ebuf+18*wrap_y+8;
-    }
-
-    if (s->mb_intra) {
-        if(s->flags&CODEC_FLAG_INTERLACED_DCT){
-            int progressive_score, interlaced_score;
-
-            s->interlaced_dct=0;
-            progressive_score= s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y, 8)
-                              +s->dsp.ildct_cmp[4](s, ptr_y + wrap_y*8, NULL, wrap_y, 8) - 400;
-
-            if(progressive_score > 0){
-                interlaced_score = s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y*2, 8)
-                                  +s->dsp.ildct_cmp[4](s, ptr_y + wrap_y  , NULL, wrap_y*2, 8);
-                if(progressive_score > interlaced_score){
-                    s->interlaced_dct=1;
-
-                    dct_offset= wrap_y;
-                    wrap_y<<=1;
-                    if (s->chroma_format == CHROMA_422)
-                        wrap_c<<=1;
-                }
-            }
-        }
-
-        s->dsp.get_pixels(s->block[0], ptr_y                 , wrap_y);
-        s->dsp.get_pixels(s->block[1], ptr_y              + 8, wrap_y);
-        s->dsp.get_pixels(s->block[2], ptr_y + dct_offset    , wrap_y);
-        s->dsp.get_pixels(s->block[3], ptr_y + dct_offset + 8, wrap_y);
-
-        if(s->flags&CODEC_FLAG_GRAY){
-            skip_dct[4]= 1;
-            skip_dct[5]= 1;
-        }else{
-            s->dsp.get_pixels(s->block[4], ptr_cb, wrap_c);
-            s->dsp.get_pixels(s->block[5], ptr_cr, wrap_c);
-            if(!s->chroma_y_shift){ /* 422 */
-                s->dsp.get_pixels(s->block[6], ptr_cb + (dct_offset>>1), wrap_c);
-                s->dsp.get_pixels(s->block[7], ptr_cr + (dct_offset>>1), wrap_c);
-            }
-        }
-    }else{
-        op_pixels_func (*op_pix)[4];
-        qpel_mc_func (*op_qpix)[16];
-        uint8_t *dest_y, *dest_cb, *dest_cr;
-
-        dest_y  = s->dest[0];
-        dest_cb = s->dest[1];
-        dest_cr = s->dest[2];
-
-        if ((!s->no_rounding) || s->pict_type==B_TYPE){
-            op_pix = s->dsp.put_pixels_tab;
-            op_qpix= s->dsp.put_qpel_pixels_tab;
-        }else{
-            op_pix = s->dsp.put_no_rnd_pixels_tab;
-            op_qpix= s->dsp.put_no_rnd_qpel_pixels_tab;
-        }
-
-        if (s->mv_dir & MV_DIR_FORWARD) {
-            MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix, op_qpix);
-            op_pix = s->dsp.avg_pixels_tab;
-            op_qpix= s->dsp.avg_qpel_pixels_tab;
-        }
-        if (s->mv_dir & MV_DIR_BACKWARD) {
-            MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix, op_qpix);
-        }
-
-        if(s->flags&CODEC_FLAG_INTERLACED_DCT){
-            int progressive_score, interlaced_score;
-
-            s->interlaced_dct=0;
-            progressive_score= s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y, 8)
-                              +s->dsp.ildct_cmp[0](s, dest_y + wrap_y*8, ptr_y + wrap_y*8, wrap_y, 8) - 400;
-
-            if(s->avctx->ildct_cmp == FF_CMP_VSSE) progressive_score -= 400;
-
-            if(progressive_score>0){
-                interlaced_score = s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y*2, 8)
-                                  +s->dsp.ildct_cmp[0](s, dest_y + wrap_y  , ptr_y + wrap_y  , wrap_y*2, 8);
-
-                if(progressive_score > interlaced_score){
-                    s->interlaced_dct=1;
-
-                    dct_offset= wrap_y;
-                    wrap_y<<=1;
-                    if (s->chroma_format == CHROMA_422)
-                        wrap_c<<=1;
-                }
-            }
-        }
-
-        s->dsp.diff_pixels(s->block[0], ptr_y                 , dest_y                 , wrap_y);
-        s->dsp.diff_pixels(s->block[1], ptr_y              + 8, dest_y              + 8, wrap_y);
-        s->dsp.diff_pixels(s->block[2], ptr_y + dct_offset    , dest_y + dct_offset    , wrap_y);
-        s->dsp.diff_pixels(s->block[3], ptr_y + dct_offset + 8, dest_y + dct_offset + 8, wrap_y);
-
-        if(s->flags&CODEC_FLAG_GRAY){
-            skip_dct[4]= 1;
-            skip_dct[5]= 1;
-        }else{
-            s->dsp.diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
-            s->dsp.diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
-            if(!s->chroma_y_shift){ /* 422 */
-                s->dsp.diff_pixels(s->block[6], ptr_cb + (dct_offset>>1), dest_cb + (dct_offset>>1), wrap_c);
-                s->dsp.diff_pixels(s->block[7], ptr_cr + (dct_offset>>1), dest_cr + (dct_offset>>1), wrap_c);
-            }
-        }
-        /* pre quantization */
-        if(s->current_picture.mc_mb_var[s->mb_stride*mb_y+ mb_x]<2*s->qscale*s->qscale){
-            //FIXME optimize
-            if(s->dsp.sad[1](NULL, ptr_y               , dest_y               , wrap_y, 8) < 20*s->qscale) skip_dct[0]= 1;
-            if(s->dsp.sad[1](NULL, ptr_y            + 8, dest_y            + 8, wrap_y, 8) < 20*s->qscale) skip_dct[1]= 1;
-            if(s->dsp.sad[1](NULL, ptr_y +dct_offset   , dest_y +dct_offset   , wrap_y, 8) < 20*s->qscale) skip_dct[2]= 1;
-            if(s->dsp.sad[1](NULL, ptr_y +dct_offset+ 8, dest_y +dct_offset+ 8, wrap_y, 8) < 20*s->qscale) skip_dct[3]= 1;
-            if(s->dsp.sad[1](NULL, ptr_cb              , dest_cb              , wrap_c, 8) < 20*s->qscale) skip_dct[4]= 1;
-            if(s->dsp.sad[1](NULL, ptr_cr              , dest_cr              , wrap_c, 8) < 20*s->qscale) skip_dct[5]= 1;
-            if(!s->chroma_y_shift){ /* 422 */
-                if(s->dsp.sad[1](NULL, ptr_cb +(dct_offset>>1), dest_cb +(dct_offset>>1), wrap_c, 8) < 20*s->qscale) skip_dct[6]= 1;
-                if(s->dsp.sad[1](NULL, ptr_cr +(dct_offset>>1), dest_cr +(dct_offset>>1), wrap_c, 8) < 20*s->qscale) skip_dct[7]= 1;
-            }
-        }
-    }
-
-    if(s->avctx->quantizer_noise_shaping){
-        if(!skip_dct[0]) get_vissual_weight(weight[0], ptr_y                 , wrap_y);
-        if(!skip_dct[1]) get_vissual_weight(weight[1], ptr_y              + 8, wrap_y);
-        if(!skip_dct[2]) get_vissual_weight(weight[2], ptr_y + dct_offset    , wrap_y);
-        if(!skip_dct[3]) get_vissual_weight(weight[3], ptr_y + dct_offset + 8, wrap_y);
-        if(!skip_dct[4]) get_vissual_weight(weight[4], ptr_cb                , wrap_c);
-        if(!skip_dct[5]) get_vissual_weight(weight[5], ptr_cr                , wrap_c);
-        if(!s->chroma_y_shift){ /* 422 */
-            if(!skip_dct[6]) get_vissual_weight(weight[6], ptr_cb + (dct_offset>>1), wrap_c);
-            if(!skip_dct[7]) get_vissual_weight(weight[7], ptr_cr + (dct_offset>>1), wrap_c);
-        }
-        memcpy(orig[0], s->block[0], sizeof(DCTELEM)*64*mb_block_count);
-    }
-
-    /* DCT & quantize */
-    assert(s->out_format!=FMT_MJPEG || s->qscale==8);
-    {
-        for(i=0;i<mb_block_count;i++) {
-            if(!skip_dct[i]){
-                int overflow;
-                s->block_last_index[i] = s->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]);
-            }else
-                s->block_last_index[i]= -1;
-        }
-        if(s->avctx->quantizer_noise_shaping){
-            for(i=0;i<mb_block_count;i++) {
-                if(!skip_dct[i]){
-                    s->block_last_index[i] = dct_quantize_refine(s, s->block[i], weight[i], orig[i], i, s->qscale);
-                }
-            }
-        }
-
-        if(s->luma_elim_threshold && !s->mb_intra)
-            for(i=0; i<4; i++)
-                dct_single_coeff_elimination(s, i, s->luma_elim_threshold);
-        if(s->chroma_elim_threshold && !s->mb_intra)
-            for(i=4; i<mb_block_count; i++)
-                dct_single_coeff_elimination(s, i, s->chroma_elim_threshold);
-
-        if(s->flags & CODEC_FLAG_CBP_RD){
-            for(i=0;i<mb_block_count;i++) {
-                if(s->block_last_index[i] == -1)
-                    s->coded_score[i]= INT_MAX/256;
-            }
-        }
-    }
-
-    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]= (1024 + s->c_dc_scale/2)/ s->c_dc_scale;
-    }
-
-    //non c quantize code returns incorrect block_last_index FIXME
-    if(s->alternate_scan && s->dct_quantize != dct_quantize_c){
-        for(i=0; i<mb_block_count; i++){
-            int j;
-            if(s->block_last_index[i]>0){
-                for(j=63; j>0; j--){
-                    if(s->block[i][ s->intra_scantable.permutated[j] ]) break;
-                }
-                s->block_last_index[i]= j;
-            }
-        }
-    }
-
-    /* huffman encode */
-    switch(s->codec_id){ //FIXME funct ptr could be slightly faster
-    case CODEC_ID_MPEG1VIDEO:
-    case CODEC_ID_MPEG2VIDEO:
-        mpeg1_encode_mb(s, s->block, motion_x, motion_y); break;
-    case CODEC_ID_MPEG4:
-        mpeg4_encode_mb(s, s->block, motion_x, motion_y); break;
-    case CODEC_ID_MSMPEG4V2:
-    case CODEC_ID_MSMPEG4V3:
-    case CODEC_ID_WMV1:
-        msmpeg4_encode_mb(s, s->block, motion_x, motion_y); break;
-    case CODEC_ID_WMV2:
-         ff_wmv2_encode_mb(s, s->block, motion_x, motion_y); break;
-#ifdef CONFIG_H261_ENCODER
-    case CODEC_ID_H261:
-        ff_h261_encode_mb(s, s->block, motion_x, motion_y); break;
-#endif
-    case CODEC_ID_H263:
-    case CODEC_ID_H263P:
-    case CODEC_ID_FLV1:
-    case CODEC_ID_RV10:
-    case CODEC_ID_RV20:
-        h263_encode_mb(s, s->block, motion_x, motion_y); break;
-    case CODEC_ID_MJPEG:
-        mjpeg_encode_mb(s, s->block); break;
-    default:
-        assert(0);
-    }
-}
-
-static always_inline void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
-{
-    if (s->chroma_format == CHROMA_420) encode_mb_internal(s, motion_x, motion_y,  8, 6);
-    else                                encode_mb_internal(s, motion_x, motion_y, 16, 8);
-}
-
-#endif //CONFIG_ENCODERS
-
-void ff_mpeg_flush(AVCodecContext *avctx){
-    int i;
-    MpegEncContext *s = avctx->priv_data;
-
-    if(s==NULL || s->picture==NULL)
-        return;
-
-    for(i=0; i<MAX_PICTURE_COUNT; i++){
-       if(s->picture[i].data[0] && (   s->picture[i].type == FF_BUFFER_TYPE_INTERNAL
-                                    || s->picture[i].type == FF_BUFFER_TYPE_USER))
-        avctx->release_buffer(avctx, (AVFrame*)&s->picture[i]);
-    }
-    s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
-
-    s->mb_x= s->mb_y= 0;
-
-    s->parse_context.state= -1;
-    s->parse_context.frame_start_found= 0;
-    s->parse_context.overread= 0;
-    s->parse_context.overread_index= 0;
-    s->parse_context.index= 0;
-    s->parse_context.last_index= 0;
-    s->bitstream_buffer_size=0;
-}
-
-#ifdef CONFIG_ENCODERS
-void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length)
-{
-    const uint16_t *srcw= (uint16_t*)src;
-    int words= length>>4;
-    int bits= length&15;
-    int i;
-
-    if(length==0) return;
-
-    if(words < 16){
-        for(i=0; i<words; i++) put_bits(pb, 16, be2me_16(srcw[i]));
-    }else if(put_bits_count(pb)&7){
-        for(i=0; i<words; i++) put_bits(pb, 16, be2me_16(srcw[i]));
-    }else{
-        for(i=0; put_bits_count(pb)&31; i++)
-            put_bits(pb, 8, src[i]);
-        flush_put_bits(pb);
-        memcpy(pbBufPtr(pb), src+i, 2*words-i);
-        skip_put_bytes(pb, 2*words-i);
-    }
-
-    put_bits(pb, bits, be2me_16(srcw[words])>>(16-bits));
-}
-
-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?
-
-    /* mpeg1 */
-    d->mb_skip_run= s->mb_skip_run;
-    for(i=0; i<3; i++)
-        d->last_dc[i]= s->last_dc[i];
-
-    /* statistics */
-    d->mv_bits= s->mv_bits;
-    d->i_tex_bits= s->i_tex_bits;
-    d->p_tex_bits= s->p_tex_bits;
-    d->i_count= s->i_count;
-    d->f_count= s->f_count;
-    d->b_count= s->b_count;
-    d->skip_count= s->skip_count;
-    d->misc_bits= s->misc_bits;
-    d->last_bits= 0;
-
-    d->mb_skipped= 0;
-    d->qscale= s->qscale;
-    d->dquant= s->dquant;
-}
-
-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));
-    memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
-
-    /* mpeg1 */
-    d->mb_skip_run= s->mb_skip_run;
-    for(i=0; i<3; i++)
-        d->last_dc[i]= s->last_dc[i];
-
-    /* statistics */
-    d->mv_bits= s->mv_bits;
-    d->i_tex_bits= s->i_tex_bits;
-    d->p_tex_bits= s->p_tex_bits;
-    d->i_count= s->i_count;
-    d->f_count= s->f_count;
-    d->b_count= s->b_count;
-    d->skip_count= s->skip_count;
-    d->misc_bits= s->misc_bits;
-
-    d->mb_intra= s->mb_intra;
-    d->mb_skipped= s->mb_skipped;
-    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<8; i++)
-        d->block_last_index[i]= s->block_last_index[i];
-    d->interlaced_dct= s->interlaced_dct;
-    d->qscale= s->qscale;
-}
-
-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 score;
-    uint8_t *dest_backup[3];
-
-    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];
-    }
-
-    if(*next_block){
-        memcpy(dest_backup, s->dest, sizeof(s->dest));
-        s->dest[0] = s->rd_scratchpad;
-        s->dest[1] = s->rd_scratchpad + 16*s->linesize;
-        s->dest[2] = s->rd_scratchpad + 16*s->linesize + 8;
-        assert(s->linesize >= 32); //FIXME
-    }
-
-    encode_mb(s, motion_x, motion_y);
-
-    score= put_bits_count(&s->pb);
-    if(s->data_partitioning){
-        score+= put_bits_count(&s->pb2);
-        score+= put_bits_count(&s->tex_pb);
-    }
-
-    if(s->avctx->mb_decision == FF_MB_DECISION_RD){
-        MPV_decode_mb(s, s->block);
-
-        score *= s->lambda2;
-        score += sse_mb(s) << FF_LAMBDA_SHIFT;
-    }
-
-    if(*next_block){
-        memcpy(s->dest, dest_backup, sizeof(s->dest));
-    }
-
-    if(score<*dmin){
-        *dmin= score;
-        *next_block^=1;
-
-        copy_context_after_encode(best, s, type);
-    }
-}
-
-static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride){
-    uint32_t *sq = ff_squareTbl + 256;
-    int acc=0;
-    int x,y;
-
-    if(w==16 && h==16)
-        return s->dsp.sse[0](NULL, src1, src2, stride, 16);
-    else if(w==8 && h==8)
-        return s->dsp.sse[1](NULL, src1, src2, stride, 8);
-
-    for(y=0; y<h; y++){
-        for(x=0; x<w; x++){
-            acc+= sq[src1[x + y*stride] - src2[x + y*stride]];
-        }
-    }
-
-    assert(acc>=0);
-
-    return acc;
-}
-
-static int sse_mb(MpegEncContext *s){
-    int w= 16;
-    int h= 16;
-
-    if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
-    if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
-
-    if(w==16 && h==16)
-      if(s->avctx->mb_cmp == FF_CMP_NSSE){
-        return  s->dsp.nsse[0](s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], s->linesize, 16)
-               +s->dsp.nsse[1](s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], s->uvlinesize, 8)
-               +s->dsp.nsse[1](s, s->new_picture.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], s->uvlinesize, 8);
-      }else{
-        return  s->dsp.sse[0](NULL, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], s->linesize, 16)
-               +s->dsp.sse[1](NULL, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], s->uvlinesize, 8)
-               +s->dsp.sse[1](NULL, s->new_picture.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], s->uvlinesize, 8);
-      }
-    else
-        return  sse(s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], w, h, s->linesize)
-               +sse(s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], w>>1, h>>1, s->uvlinesize)
-               +sse(s, s->new_picture.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], w>>1, h>>1, s->uvlinesize);
-}
-
-static int pre_estimate_motion_thread(AVCodecContext *c, void *arg){
-    MpegEncContext *s= arg;
-
-
-    s->me.pre_pass=1;
-    s->me.dia_size= s->avctx->pre_dia_size;
-    s->first_slice_line=1;
-    for(s->mb_y= s->end_mb_y-1; s->mb_y >= s->start_mb_y; s->mb_y--) {
-        for(s->mb_x=s->mb_width-1; s->mb_x >=0 ;s->mb_x--) {
-            ff_pre_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
-        }
-        s->first_slice_line=0;
-    }
-
-    s->me.pre_pass=0;
-
-    return 0;
-}
-
-static int estimate_motion_thread(AVCodecContext *c, void *arg){
-    MpegEncContext *s= arg;
-
-    s->me.dia_size= s->avctx->dia_size;
-    s->first_slice_line=1;
-    for(s->mb_y= s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
-        s->mb_x=0; //for block init below
-        ff_init_block_index(s);
-        for(s->mb_x=0; s->mb_x < s->mb_width; s->mb_x++) {
-            s->block_index[0]+=2;
-            s->block_index[1]+=2;
-            s->block_index[2]+=2;
-            s->block_index[3]+=2;
-
-            /* compute motion vector & mb_type and store in context */
-            if(s->pict_type==B_TYPE)
-                ff_estimate_b_frame_motion(s, s->mb_x, s->mb_y);
-            else
-                ff_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
-        }
-        s->first_slice_line=0;
-    }
-    return 0;
-}
-
-static int mb_var_thread(AVCodecContext *c, void *arg){
-    MpegEncContext *s= arg;
-    int mb_x, mb_y;
-
-    for(mb_y=s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
-        for(mb_x=0; mb_x < s->mb_width; mb_x++) {
-            int xx = mb_x * 16;
-            int yy = mb_y * 16;
-            uint8_t *pix = s->new_picture.data[0] + (yy * s->linesize) + xx;
-            int varc;
-            int sum = s->dsp.pix_sum(pix, s->linesize);
-
-            varc = (s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)(sum*sum))>>8) + 500 + 128)>>8;
-
-            s->current_picture.mb_var [s->mb_stride * mb_y + mb_x] = varc;
-            s->current_picture.mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8;
-            s->me.mb_var_sum_temp    += varc;
-        }
-    }
-    return 0;
-}
-
-static void write_slice_end(MpegEncContext *s){
-    if(s->codec_id==CODEC_ID_MPEG4){
-        if(s->partitioned_frame){
-            ff_mpeg4_merge_partitions(s);
-        }
-
-        ff_mpeg4_stuffing(&s->pb);
-    }else if(s->out_format == FMT_MJPEG){
-        ff_mjpeg_stuffing(&s->pb);
-    }
-
-    align_put_bits(&s->pb);
-    flush_put_bits(&s->pb);
-
-    if((s->flags&CODEC_FLAG_PASS1) && !s->partitioned_frame)
-        s->misc_bits+= get_bits_diff(s);
-}
-
-static int encode_thread(AVCodecContext *c, void *arg){
-    MpegEncContext *s= arg;
-    int mb_x, mb_y, pdif = 0;
-    int i, j;
-    MpegEncContext best_s, backup_s;
-    uint8_t bit_buf[2][MAX_MB_BYTES];
-    uint8_t bit_buf2[2][MAX_MB_BYTES];
-    uint8_t bit_buf_tex[2][MAX_MB_BYTES];
-    PutBitContext pb[2], pb2[2], tex_pb[2];
-//printf("%d->%d\n", s->resync_mb_y, s->end_mb_y);
-
-    for(i=0; i<2; i++){
-        init_put_bits(&pb    [i], bit_buf    [i], MAX_MB_BYTES);
-        init_put_bits(&pb2   [i], bit_buf2   [i], MAX_MB_BYTES);
-        init_put_bits(&tex_pb[i], bit_buf_tex[i], MAX_MB_BYTES);
-    }
-
-    s->last_bits= put_bits_count(&s->pb);
-    s->mv_bits=0;
-    s->misc_bits=0;
-    s->i_tex_bits=0;
-    s->p_tex_bits=0;
-    s->i_count=0;
-    s->f_count=0;
-    s->b_count=0;
-    s->skip_count=0;
-
-    for(i=0; i<3; i++){
-        /* init last dc values */
-        /* note: quant matrix value (8) is implied here */
-        s->last_dc[i] = 128 << s->intra_dc_precision;
-
-        s->current_picture.error[i] = 0;
-    }
-    s->mb_skip_run = 0;
-    memset(s->last_mv, 0, sizeof(s->last_mv));
-
-    s->last_mv_dir = 0;
-
-    switch(s->codec_id){
-    case CODEC_ID_H263:
-    case CODEC_ID_H263P:
-    case CODEC_ID_FLV1:
-        s->gob_index = ff_h263_get_gob_height(s);
-        break;
-    case CODEC_ID_MPEG4:
-        if(s->partitioned_frame)
-            ff_mpeg4_init_partitions(s);
-        break;
-    }
-
-    s->resync_mb_x=0;
-    s->resync_mb_y=0;
-    s->first_slice_line = 1;
-    s->ptr_lastgob = s->pb.buf;
-    for(mb_y= s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
-//    printf("row %d at %X\n", s->mb_y, (int)s);
-        s->mb_x=0;
-        s->mb_y= mb_y;
-
-        ff_set_qscale(s, s->qscale);
-        ff_init_block_index(s);
-
-        for(mb_x=0; mb_x < s->mb_width; mb_x++) {
-            int xy= mb_y*s->mb_stride + mb_x; // removed const, H261 needs to adjust this
-            int mb_type= s->mb_type[xy];
-//            int d;
-            int dmin= INT_MAX;
-            int dir;
-
-            if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < MAX_MB_BYTES){
-                av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
-                return -1;
-            }
-            if(s->data_partitioning){
-                if(   s->pb2   .buf_end - s->pb2   .buf - (put_bits_count(&s->    pb2)>>3) < MAX_MB_BYTES
-                   || s->tex_pb.buf_end - s->tex_pb.buf - (put_bits_count(&s->tex_pb )>>3) < MAX_MB_BYTES){
-                    av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
-                    return -1;
-                }
-            }
-
-            s->mb_x = mb_x;
-            s->mb_y = mb_y;  // moved into loop, can get changed by H.261
-            ff_update_block_index(s);
-
-#ifdef CONFIG_H261_ENCODER
-            if(s->codec_id == CODEC_ID_H261){
-                ff_h261_reorder_mb_index(s);
-                xy= s->mb_y*s->mb_stride + s->mb_x;
-                mb_type= s->mb_type[xy];
-            }
-#endif
-
-            /* write gob / video packet header  */
-            if(s->rtp_mode){
-                int current_packet_size, is_gob_start;
-
-                current_packet_size= ((put_bits_count(&s->pb)+7)>>3) - (s->ptr_lastgob - s->pb.buf);
-
-                is_gob_start= s->avctx->rtp_payload_size && current_packet_size >= s->avctx->rtp_payload_size && mb_y + mb_x>0;
-
-                if(s->start_mb_y == mb_y && mb_y > 0 && mb_x==0) is_gob_start=1;
-
-                switch(s->codec_id){
-                case CODEC_ID_H263:
-                case CODEC_ID_H263P:
-                    if(!s->h263_slice_structured)
-                        if(s->mb_x || s->mb_y%s->gob_index) is_gob_start=0;
-                    break;
-                case CODEC_ID_MPEG2VIDEO:
-                    if(s->mb_x==0 && s->mb_y!=0) is_gob_start=1;
-                case CODEC_ID_MPEG1VIDEO:
-                    if(s->mb_skip_run) is_gob_start=0;
-                    break;
-                }
-
-                if(is_gob_start){
-                    if(s->start_mb_y != mb_y || mb_x!=0){
-                        write_slice_end(s);
-
-                        if(s->codec_id==CODEC_ID_MPEG4 && s->partitioned_frame){
-                            ff_mpeg4_init_partitions(s);
-                        }
-                    }
-
-                    assert((put_bits_count(&s->pb)&7) == 0);
-                    current_packet_size= pbBufPtr(&s->pb) - s->ptr_lastgob;
-
-                    if(s->avctx->error_rate && s->resync_mb_x + s->resync_mb_y > 0){
-                        int r= put_bits_count(&s->pb)/8 + s->picture_number + 16 + s->mb_x + s->mb_y;
-                        int d= 100 / s->avctx->error_rate;
-                        if(r % d == 0){
-                            current_packet_size=0;
-#ifndef ALT_BITSTREAM_WRITER
-                            s->pb.buf_ptr= s->ptr_lastgob;
-#endif
-                            assert(pbBufPtr(&s->pb) == s->ptr_lastgob);
-                        }
-                    }
-
-                    if (s->avctx->rtp_callback){
-                        int number_mb = (mb_y - s->resync_mb_y)*s->mb_width + mb_x - s->resync_mb_x;
-                        s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, current_packet_size, number_mb);
-                    }
-
-                    switch(s->codec_id){
-                    case CODEC_ID_MPEG4:
-                        ff_mpeg4_encode_video_packet_header(s);
-                        ff_mpeg4_clean_buffers(s);
-                    break;
-                    case CODEC_ID_MPEG1VIDEO:
-                    case CODEC_ID_MPEG2VIDEO:
-                        ff_mpeg1_encode_slice_header(s);
-                        ff_mpeg1_clean_buffers(s);
-                    break;
-                    case CODEC_ID_H263:
-                    case CODEC_ID_H263P:
-                        h263_encode_gob_header(s, mb_y);
-                    break;
-                    }
-
-                    if(s->flags&CODEC_FLAG_PASS1){
-                        int bits= put_bits_count(&s->pb);
-                        s->misc_bits+= bits - s->last_bits;
-                        s->last_bits= bits;
-                    }
-
-                    s->ptr_lastgob += current_packet_size;
-                    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;
-            }
-
-            s->mb_skipped=0;
-            s->dquant=0; //only for QP_RD
-
-            if(mb_type & (mb_type-1) || (s->flags & CODEC_FLAG_QP_RD)){ // more than 1 MB type possible or CODEC_FLAG_QP_RD
-                int next_block=0;
-                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;
-                best_s.partitioned_frame= s->partitioned_frame;
-                if(s->data_partitioning){
-                    backup_s.pb2= s->pb2;
-                    backup_s.tex_pb= s->tex_pb;
-                }
-
-                if(mb_type&CANDIDATE_MB_TYPE_INTER){
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mv_type = MV_TYPE_16X16;
-                    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];
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER, pb, pb2, tex_pb,
-                                 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
-                }
-                if(mb_type&CANDIDATE_MB_TYPE_INTER_I){
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mv_type = MV_TYPE_FIELD;
-                    s->mb_intra= 0;
-                    for(i=0; i<2; i++){
-                        j= s->field_select[0][i] = s->p_field_select_table[i][xy];
-                        s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
-                        s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
-                    }
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER_I, pb, pb2, tex_pb,
-                                 &dmin, &next_block, 0, 0);
-                }
-                if(mb_type&CANDIDATE_MB_TYPE_SKIPPED){
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mv_type = MV_TYPE_16X16;
-                    s->mb_intra= 0;
-                    s->mv[0][0][0] = 0;
-                    s->mv[0][0][1] = 0;
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_SKIPPED, pb, pb2, tex_pb,
-                                 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
-                }
-                if(mb_type&CANDIDATE_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->current_picture.motion_val[0][s->block_index[i]][0];
-                        s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
-                    }
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER4V, pb, pb2, tex_pb,
-                                 &dmin, &next_block, 0, 0);
-                }
-                if(mb_type&CANDIDATE_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];
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD, pb, pb2, tex_pb,
-                                 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
-                }
-                if(mb_type&CANDIDATE_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];
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD, pb, pb2, tex_pb,
-                                 &dmin, &next_block, s->mv[1][0][0], s->mv[1][0][1]);
-                }
-                if(mb_type&CANDIDATE_MB_TYPE_BIDIR){
-                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
-                    s->mv_type = MV_TYPE_16X16;
-                    s->mb_intra= 0;
-                    s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
-                    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];
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR, pb, pb2, tex_pb,
-                                 &dmin, &next_block, 0, 0);
-                }
-                if(mb_type&CANDIDATE_MB_TYPE_DIRECT){
-                    int mx= s->b_direct_mv_table[xy][0];
-                    int my= s->b_direct_mv_table[xy][1];
-
-                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
-                    s->mb_intra= 0;
-                    ff_mpeg4_set_direct_mv(s, mx, my);
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
-                                 &dmin, &next_block, mx, my);
-                }
-                if(mb_type&CANDIDATE_MB_TYPE_FORWARD_I){
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mv_type = MV_TYPE_FIELD;
-                    s->mb_intra= 0;
-                    for(i=0; i<2; i++){
-                        j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
-                        s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
-                        s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
-                    }
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD_I, pb, pb2, tex_pb,
-                                 &dmin, &next_block, 0, 0);
-                }
-                if(mb_type&CANDIDATE_MB_TYPE_BACKWARD_I){
-                    s->mv_dir = MV_DIR_BACKWARD;
-                    s->mv_type = MV_TYPE_FIELD;
-                    s->mb_intra= 0;
-                    for(i=0; i<2; i++){
-                        j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
-                        s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
-                        s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
-                    }
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD_I, pb, pb2, tex_pb,
-                                 &dmin, &next_block, 0, 0);
-                }
-                if(mb_type&CANDIDATE_MB_TYPE_BIDIR_I){
-                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
-                    s->mv_type = MV_TYPE_FIELD;
-                    s->mb_intra= 0;
-                    for(dir=0; dir<2; dir++){
-                        for(i=0; i<2; i++){
-                            j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
-                            s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
-                            s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
-                        }
-                    }
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR_I, pb, pb2, tex_pb,
-                                 &dmin, &next_block, 0, 0);
-                }
-                if(mb_type&CANDIDATE_MB_TYPE_INTRA){
-                    s->mv_dir = 0;
-                    s->mv_type = MV_TYPE_16X16;
-                    s->mb_intra= 1;
-                    s->mv[0][0][0] = 0;
-                    s->mv[0][0][1] = 0;
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTRA, pb, pb2, tex_pb,
-                                 &dmin, &next_block, 0, 0);
-                    if(s->h263_pred || s->h263_aic){
-                        if(best_s.mb_intra)
-                            s->mbintra_table[mb_x + mb_y*s->mb_stride]=1;
-                        else
-                            ff_clean_intra_table_entries(s); //old mode?
-                    }
-                }
-
-                if(s->flags & CODEC_FLAG_QP_RD){
-                    if(best_s.mv_type==MV_TYPE_16X16 && !(best_s.mv_dir&MV_DIRECT)){
-                        const int last_qp= backup_s.qscale;
-                        int qpi, qp, dc[6];
-                        DCTELEM ac[6][16];
-                        const int mvdir= (best_s.mv_dir&MV_DIR_BACKWARD) ? 1 : 0;
-                        static const int dquant_tab[4]={-1,1,-2,2};
-
-                        assert(backup_s.dquant == 0);
-
-                        //FIXME intra
-                        s->mv_dir= best_s.mv_dir;
-                        s->mv_type = MV_TYPE_16X16;
-                        s->mb_intra= best_s.mb_intra;
-                        s->mv[0][0][0] = best_s.mv[0][0][0];
-                        s->mv[0][0][1] = best_s.mv[0][0][1];
-                        s->mv[1][0][0] = best_s.mv[1][0][0];
-                        s->mv[1][0][1] = best_s.mv[1][0][1];
-
-                        qpi = s->pict_type == B_TYPE ? 2 : 0;
-                        for(; qpi<4; qpi++){
-                            int dquant= dquant_tab[qpi];
-                            qp= last_qp + dquant;
-                            if(qp < s->avctx->qmin || qp > s->avctx->qmax)
-                                continue;
-                            backup_s.dquant= dquant;
-                            if(s->mb_intra && s->dc_val[0]){
-                                for(i=0; i<6; i++){
-                                    dc[i]= s->dc_val[0][ s->block_index[i] ];
-                                    memcpy(ac[i], s->ac_val[0][s->block_index[i]], sizeof(DCTELEM)*16);
-                                }
-                            }
-
-                            encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
-                                         &dmin, &next_block, s->mv[mvdir][0][0], s->mv[mvdir][0][1]);
-                            if(best_s.qscale != qp){
-                                if(s->mb_intra && s->dc_val[0]){
-                                    for(i=0; i<6; i++){
-                                        s->dc_val[0][ s->block_index[i] ]= dc[i];
-                                        memcpy(s->ac_val[0][s->block_index[i]], ac[i], sizeof(DCTELEM)*16);
-                                    }
-                                }
-                            }
-                        }
-                        qp= best_s.qscale;
-                        s->current_picture.qscale_table[xy]= qp;
-                    }
-                }
-
-                copy_context_after_encode(s, &best_s, -1);
-
-                pb_bits_count= put_bits_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= put_bits_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= put_bits_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= put_bits_count(&s->pb);
-
-                if (s->out_format == FMT_H263 && s->pict_type!=B_TYPE)
-                    ff_h263_update_motion_val(s);
-
-                if(next_block==0){ //FIXME 16 vs linesize16
-                    s->dsp.put_pixels_tab[0][0](s->dest[0], s->rd_scratchpad                     , s->linesize  ,16);
-                    s->dsp.put_pixels_tab[1][0](s->dest[1], s->rd_scratchpad + 16*s->linesize    , s->uvlinesize, 8);
-                    s->dsp.put_pixels_tab[1][0](s->dest[2], s->rd_scratchpad + 16*s->linesize + 8, s->uvlinesize, 8);
-                }
-
-                if(s->avctx->mb_decision == FF_MB_DECISION_BITS)
-                    MPV_decode_mb(s, s->block);
-            } else {
-                int motion_x, motion_y;
-                s->mv_type=MV_TYPE_16X16;
-                // only one MB-Type possible
-
-                switch(mb_type){
-                case CANDIDATE_MB_TYPE_INTRA:
-                    s->mv_dir = 0;
-                    s->mb_intra= 1;
-                    motion_x= s->mv[0][0][0] = 0;
-                    motion_y= s->mv[0][0][1] = 0;
-                    break;
-                case CANDIDATE_MB_TYPE_INTER:
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mb_intra= 0;
-                    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 CANDIDATE_MB_TYPE_INTER_I:
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mv_type = MV_TYPE_FIELD;
-                    s->mb_intra= 0;
-                    for(i=0; i<2; i++){
-                        j= s->field_select[0][i] = s->p_field_select_table[i][xy];
-                        s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
-                        s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
+                    if (s->mv_dir & MV_DIR_FORWARD) {
+                        MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix);
+                        op_pix = s->dsp.avg_h264_chroma_pixels_tab;
                     }
-                    motion_x = motion_y = 0;
-                    break;
-                case CANDIDATE_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->current_picture.motion_val[0][s->block_index[i]][0];
-                        s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
+                    if (s->mv_dir & MV_DIR_BACKWARD) {
+                        MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix);
                     }
-                    motion_x= motion_y= 0;
-                    break;
-                case CANDIDATE_MB_TYPE_DIRECT:
-                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
-                    s->mb_intra= 0;
-                    motion_x=s->b_direct_mv_table[xy][0];
-                    motion_y=s->b_direct_mv_table[xy][1];
-                    ff_mpeg4_set_direct_mv(s, motion_x, motion_y);
-                    break;
-                case CANDIDATE_MB_TYPE_BIDIR:
-                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
-                    s->mb_intra= 0;
-                    motion_x=0;
-                    motion_y=0;
-                    s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
-                    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];
-                    break;
-                case CANDIDATE_MB_TYPE_BACKWARD:
-                    s->mv_dir = MV_DIR_BACKWARD;
-                    s->mb_intra= 0;
-                    motion_x= s->mv[1][0][0] = s->b_back_mv_table[xy][0];
-                    motion_y= s->mv[1][0][1] = s->b_back_mv_table[xy][1];
-                    break;
-                case CANDIDATE_MB_TYPE_FORWARD:
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mb_intra= 0;
-                    motion_x= s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
-                    motion_y= s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
-//                    printf(" %d %d ", motion_x, motion_y);
-                    break;
-                case CANDIDATE_MB_TYPE_FORWARD_I:
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mv_type = MV_TYPE_FIELD;
-                    s->mb_intra= 0;
-                    for(i=0; i<2; i++){
-                        j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
-                        s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
-                        s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
+                }else{
+                    op_qpix= s->me.qpel_put;
+                    if ((!s->no_rounding) || s->pict_type==FF_B_TYPE){
+                        op_pix = s->dsp.put_pixels_tab;
+                    }else{
+                        op_pix = s->dsp.put_no_rnd_pixels_tab;
                     }
-                    motion_x=motion_y=0;
-                    break;
-                case CANDIDATE_MB_TYPE_BACKWARD_I:
-                    s->mv_dir = MV_DIR_BACKWARD;
-                    s->mv_type = MV_TYPE_FIELD;
-                    s->mb_intra= 0;
-                    for(i=0; i<2; i++){
-                        j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
-                        s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
-                        s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
+                    if (s->mv_dir & MV_DIR_FORWARD) {
+                        MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix, op_qpix);
+                        op_pix = s->dsp.avg_pixels_tab;
+                        op_qpix= s->me.qpel_avg;
                     }
-                    motion_x=motion_y=0;
-                    break;
-                case CANDIDATE_MB_TYPE_BIDIR_I:
-                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
-                    s->mv_type = MV_TYPE_FIELD;
-                    s->mb_intra= 0;
-                    for(dir=0; dir<2; dir++){
-                        for(i=0; i<2; i++){
-                            j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
-                            s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
-                            s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
-                        }
+                    if (s->mv_dir & MV_DIR_BACKWARD) {
+                        MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix, op_qpix);
                     }
-                    motion_x=motion_y=0;
-                    break;
-                default:
-                    motion_x=motion_y=0; //gcc warning fix
-                    av_log(s->avctx, AV_LOG_ERROR, "illegal MB type\n");
                 }
-
-                encode_mb(s, motion_x, motion_y);
-
-                // RAL: Update last macroblock type
-                s->last_mv_dir = s->mv_dir;
-
-                if (s->out_format == FMT_H263 && s->pict_type!=B_TYPE)
-                    ff_h263_update_motion_val(s);
-
-                MPV_decode_mb(s, s->block);
-            }
-
-            /* clean the MV table in IPS frames for direct mode in B frames */
-            if(s->mb_intra /* && I,P,S_TYPE */){
-                s->p_mv_table[xy][0]=0;
-                s->p_mv_table[xy][1]=0;
-            }
-
-            if(s->flags&CODEC_FLAG_PSNR){
-                int w= 16;
-                int h= 16;
-
-                if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
-                if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
-
-                s->current_picture.error[0] += sse(
-                    s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16,
-                    s->dest[0], w, h, s->linesize);
-                s->current_picture.error[1] += sse(
-                    s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,
-                    s->dest[1], w>>1, h>>1, s->uvlinesize);
-                s->current_picture.error[2] += sse(
-                    s, s->new_picture    .data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,
-                    s->dest[2], w>>1, h>>1, s->uvlinesize);
-            }
-            if(s->loop_filter){
-                if(s->out_format == FMT_H263)
-                    ff_h263_loop_filter(s);
             }
-//printf("MB %d %d bits\n", s->mb_x+s->mb_y*s->mb_stride, put_bits_count(&s->pb));
-        }
-    }
-
-    //not beautiful here but we must write it before flushing so it has to be here
-    if (s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type == I_TYPE)
-        msmpeg4_encode_ext_header(s);
-
-    write_slice_end(s);
-
-    /* Send the last GOB if RTP */
-    if (s->avctx->rtp_callback) {
-        int number_mb = (mb_y - s->resync_mb_y)*s->mb_width - s->resync_mb_x;
-        pdif = pbBufPtr(&s->pb) - s->ptr_lastgob;
-        /* Call the RTP callback to send the last GOB */
-        emms_c();
-        s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, pdif, number_mb);
-    }
-
-    return 0;
-}
-
-#define MERGE(field) dst->field += src->field; src->field=0
-static void merge_context_after_me(MpegEncContext *dst, MpegEncContext *src){
-    MERGE(me.scene_change_score);
-    MERGE(me.mc_mb_var_sum_temp);
-    MERGE(me.mb_var_sum_temp);
-}
-
-static void merge_context_after_encode(MpegEncContext *dst, MpegEncContext *src){
-    int i;
-
-    MERGE(dct_count[0]); //note, the other dct vars are not part of the context
-    MERGE(dct_count[1]);
-    MERGE(mv_bits);
-    MERGE(i_tex_bits);
-    MERGE(p_tex_bits);
-    MERGE(i_count);
-    MERGE(f_count);
-    MERGE(b_count);
-    MERGE(skip_count);
-    MERGE(misc_bits);
-    MERGE(error_count);
-    MERGE(padding_bug_score);
-    MERGE(current_picture.error[0]);
-    MERGE(current_picture.error[1]);
-    MERGE(current_picture.error[2]);
-
-    if(dst->avctx->noise_reduction){
-        for(i=0; i<64; i++){
-            MERGE(dct_error_sum[0][i]);
-            MERGE(dct_error_sum[1][i]);
-        }
-    }
-
-    assert(put_bits_count(&src->pb) % 8 ==0);
-    assert(put_bits_count(&dst->pb) % 8 ==0);
-    ff_copy_bits(&dst->pb, src->pb.buf, put_bits_count(&src->pb));
-    flush_put_bits(&dst->pb);
-}
-
-static int estimate_qp(MpegEncContext *s, int dry_run){
-    if (s->next_lambda){
-        s->current_picture_ptr->quality=
-        s->current_picture.quality = s->next_lambda;
-        if(!dry_run) s->next_lambda= 0;
-    } else if (!s->fixed_qscale) {
-        s->current_picture_ptr->quality=
-        s->current_picture.quality = ff_rate_estimate_qscale(s, dry_run);
-        if (s->current_picture.quality < 0)
-            return -1;
-    }
-
-    if(s->adaptive_quant){
-        switch(s->codec_id){
-        case CODEC_ID_MPEG4:
-            ff_clean_mpeg4_qscales(s);
-            break;
-        case CODEC_ID_H263:
-        case CODEC_ID_H263P:
-        case CODEC_ID_FLV1:
-            ff_clean_h263_qscales(s);
-            break;
-        }
-
-        s->lambda= s->lambda_table[0];
-        //FIXME broken
-    }else
-        s->lambda= s->current_picture.quality;
-//printf("%d %d\n", s->avctx->global_quality, s->current_picture.quality);
-    update_qscale(s);
-    return 0;
-}
-
-static int encode_picture(MpegEncContext *s, int picture_number)
-{
-    int i;
-    int bits;
-
-    s->picture_number = picture_number;
-
-    /* Reset the average MB variance */
-    s->me.mb_var_sum_temp    =
-    s->me.mc_mb_var_sum_temp = 0;
-
-    /* we need to initialize some time vars before we can encode b-frames */
-    // RAL: Condition added for MPEG1VIDEO
-    if (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO || (s->h263_pred && !s->h263_msmpeg4))
-        ff_set_mpeg4_time(s, s->picture_number);  //FIXME rename and use has_b_frames or similar
-
-    s->me.scene_change_score=0;
-
-//    s->lambda= s->current_picture_ptr->quality; //FIXME qscale / ... stuff for ME ratedistoration
-
-    if(s->pict_type==I_TYPE){
-        if(s->msmpeg4_version >= 3) s->no_rounding=1;
-        else                        s->no_rounding=0;
-    }else if(s->pict_type!=B_TYPE){
-        if(s->flipflop_rounding || s->codec_id == CODEC_ID_H263P || s->codec_id == CODEC_ID_MPEG4)
-            s->no_rounding ^= 1;
-    }
-
-    if(s->flags & CODEC_FLAG_PASS2){
-        if (estimate_qp(s,1) < 0)
-            return -1;
-        ff_get_2pass_fcode(s);
-    }else if(!(s->flags & CODEC_FLAG_QSCALE)){
-        if(s->pict_type==B_TYPE)
-            s->lambda= s->last_lambda_for[s->pict_type];
-        else
-            s->lambda= s->last_lambda_for[s->last_non_b_pict_type];
-        update_qscale(s);
-    }
-
-    s->mb_intra=0; //for the rate distortion & bit compare functions
-    for(i=1; i<s->avctx->thread_count; i++){
-        ff_update_duplicate_context(s->thread_context[i], s);
-    }
 
-    ff_init_me(s);
-
-    /* Estimate motion for every MB */
-    if(s->pict_type != I_TYPE){
-        s->lambda = (s->lambda * s->avctx->me_penalty_compensation + 128)>>8;
-        s->lambda2= (s->lambda2* (int64_t)s->avctx->me_penalty_compensation + 128)>>8;
-        if(s->pict_type != B_TYPE && s->avctx->me_threshold==0){
-            if((s->avctx->pre_me && s->last_non_b_pict_type==I_TYPE) || s->avctx->pre_me==2){
-                s->avctx->execute(s->avctx, pre_estimate_motion_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
-            }
-        }
-
-        s->avctx->execute(s->avctx, estimate_motion_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
-    }else /* if(s->pict_type == I_TYPE) */{
-        /* I-Frame */
-        for(i=0; i<s->mb_stride*s->mb_height; i++)
-            s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
-
-        if(!s->fixed_qscale){
-            /* finding spatial complexity for I-frame rate control */
-            s->avctx->execute(s->avctx, mb_var_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
-        }
-    }
-    for(i=1; i<s->avctx->thread_count; i++){
-        merge_context_after_me(s, s->thread_context[i]);
-    }
-    s->current_picture.mc_mb_var_sum= s->current_picture_ptr->mc_mb_var_sum= s->me.mc_mb_var_sum_temp;
-    s->current_picture.   mb_var_sum= s->current_picture_ptr->   mb_var_sum= s->me.   mb_var_sum_temp;
-    emms_c();
-
-    if(s->me.scene_change_score > s->avctx->scenechange_threshold && s->pict_type == P_TYPE){
-        s->pict_type= I_TYPE;
-        for(i=0; i<s->mb_stride*s->mb_height; i++)
-            s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
-//printf("Scene change detected, encoding as I Frame %d %d\n", s->current_picture.mb_var_sum, s->current_picture.mc_mb_var_sum);
-    }
-
-    if(!s->umvplus){
-        if(s->pict_type==P_TYPE || s->pict_type==S_TYPE) {
-            s->f_code= ff_get_best_fcode(s, s->p_mv_table, CANDIDATE_MB_TYPE_INTER);
-
-            if(s->flags & CODEC_FLAG_INTERLACED_ME){
-                int a,b;
-                a= ff_get_best_fcode(s, s->p_field_mv_table[0][0], CANDIDATE_MB_TYPE_INTER_I); //FIXME field_select
-                b= ff_get_best_fcode(s, s->p_field_mv_table[1][1], CANDIDATE_MB_TYPE_INTER_I);
-                s->f_code= FFMAX(s->f_code, FFMAX(a,b));
+            /* skip dequant / idct if we are really late ;) */
+            if(s->hurry_up>1) goto skip_idct;
+            if(s->avctx->skip_idct){
+                if(  (s->avctx->skip_idct >= AVDISCARD_NONREF && s->pict_type == FF_B_TYPE)
+                   ||(s->avctx->skip_idct >= AVDISCARD_NONKEY && s->pict_type != FF_I_TYPE)
+                   || s->avctx->skip_idct >= AVDISCARD_ALL)
+                    goto skip_idct;
             }
 
-            ff_fix_long_p_mvs(s);
-            ff_fix_long_mvs(s, NULL, 0, s->p_mv_table, s->f_code, CANDIDATE_MB_TYPE_INTER, 0);
-            if(s->flags & CODEC_FLAG_INTERLACED_ME){
-                int j;
-                for(i=0; i<2; i++){
-                    for(j=0; j<2; j++)
-                        ff_fix_long_mvs(s, s->p_field_select_table[i], j,
-                                        s->p_field_mv_table[i][j], s->f_code, CANDIDATE_MB_TYPE_INTER_I, 0);
-                }
-            }
-        }
+            /* add dct residue */
+            if(s->encoding || !(   s->h263_msmpeg4 || s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO
+                                || (s->codec_id==CODEC_ID_MPEG4 && !s->mpeg_quant))){
+                add_dequant_dct(s, block[0], 0, dest_y                          , dct_linesize, s->qscale);
+                add_dequant_dct(s, block[1], 1, dest_y              + block_size, dct_linesize, s->qscale);
+                add_dequant_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize, s->qscale);
+                add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
 
-        if(s->pict_type==B_TYPE){
-            int a, b;
-
-            a = ff_get_best_fcode(s, s->b_forw_mv_table, CANDIDATE_MB_TYPE_FORWARD);
-            b = ff_get_best_fcode(s, s->b_bidir_forw_mv_table, CANDIDATE_MB_TYPE_BIDIR);
-            s->f_code = FFMAX(a, b);
-
-            a = ff_get_best_fcode(s, s->b_back_mv_table, CANDIDATE_MB_TYPE_BACKWARD);
-            b = ff_get_best_fcode(s, s->b_bidir_back_mv_table, CANDIDATE_MB_TYPE_BIDIR);
-            s->b_code = FFMAX(a, b);
-
-            ff_fix_long_mvs(s, NULL, 0, s->b_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_FORWARD, 1);
-            ff_fix_long_mvs(s, NULL, 0, s->b_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BACKWARD, 1);
-            ff_fix_long_mvs(s, NULL, 0, s->b_bidir_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_BIDIR, 1);
-            ff_fix_long_mvs(s, NULL, 0, s->b_bidir_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BIDIR, 1);
-            if(s->flags & CODEC_FLAG_INTERLACED_ME){
-                int dir, j;
-                for(dir=0; dir<2; dir++){
-                    for(i=0; i<2; i++){
-                        for(j=0; j<2; j++){
-                            int type= dir ? (CANDIDATE_MB_TYPE_BACKWARD_I|CANDIDATE_MB_TYPE_BIDIR_I)
-                                          : (CANDIDATE_MB_TYPE_FORWARD_I |CANDIDATE_MB_TYPE_BIDIR_I);
-                            ff_fix_long_mvs(s, s->b_field_select_table[dir][i], j,
-                                            s->b_field_mv_table[dir][i][j], dir ? s->b_code : s->f_code, type, 1);
-                        }
+                if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
+                    if (s->chroma_y_shift){
+                        add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
+                        add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
+                    }else{
+                        dct_linesize >>= 1;
+                        dct_offset >>=1;
+                        add_dequant_dct(s, block[4], 4, dest_cb,              dct_linesize, s->chroma_qscale);
+                        add_dequant_dct(s, block[5], 5, dest_cr,              dct_linesize, s->chroma_qscale);
+                        add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
+                        add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
                     }
                 }
-            }
-        }
-    }
-
-    if (estimate_qp(s, 0) < 0)
-        return -1;
-
-    if(s->qscale < 3 && s->max_qcoeff<=128 && s->pict_type==I_TYPE && !(s->flags & CODEC_FLAG_QSCALE))
-        s->qscale= 3; //reduce clipping problems
-
-    if (s->out_format == FMT_MJPEG) {
-        /* for mjpeg, we do include qscale in the matrix */
-        s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0];
-        for(i=1;i<64;i++){
-            int j= s->dsp.idct_permutation[i];
-
-            s->intra_matrix[j] = clip_uint8((ff_mpeg1_default_intra_matrix[i] * s->qscale) >> 3);
-        }
-        convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
-                       s->intra_matrix, s->intra_quant_bias, 8, 8, 1);
-        s->qscale= 8;
-    }
-
-    //FIXME var duplication
-    s->current_picture_ptr->key_frame=
-    s->current_picture.key_frame= s->pict_type == I_TYPE; //FIXME pic_ptr
-    s->current_picture_ptr->pict_type=
-    s->current_picture.pict_type= s->pict_type;
-
-    if(s->current_picture.key_frame)
-        s->picture_in_gop_number=0;
-
-    s->last_bits= put_bits_count(&s->pb);
-    switch(s->out_format) {
-    case FMT_MJPEG:
-        mjpeg_picture_header(s);
-        break;
-#ifdef CONFIG_H261_ENCODER
-    case FMT_H261:
-        ff_h261_encode_picture_header(s, picture_number);
-        break;
-#endif
-    case FMT_H263:
-        if (s->codec_id == CODEC_ID_WMV2)
-            ff_wmv2_encode_picture_header(s, picture_number);
-        else if (s->h263_msmpeg4)
-            msmpeg4_encode_picture_header(s, picture_number);
-        else if (s->h263_pred)
-            mpeg4_encode_picture_header(s, picture_number);
-#ifdef CONFIG_RV10_ENCODER
-        else if (s->codec_id == CODEC_ID_RV10)
-            rv10_encode_picture_header(s, picture_number);
-#endif
-#ifdef CONFIG_RV20_ENCODER
-        else if (s->codec_id == CODEC_ID_RV20)
-            rv20_encode_picture_header(s, picture_number);
-#endif
-        else if (s->codec_id == CODEC_ID_FLV1)
-            ff_flv_encode_picture_header(s, picture_number);
-        else
-            h263_encode_picture_header(s, picture_number);
-        break;
-    case FMT_MPEG1:
-        mpeg1_encode_picture_header(s, picture_number);
-        break;
-    case FMT_H264:
-        break;
-    default:
-        assert(0);
-    }
-    bits= put_bits_count(&s->pb);
-    s->header_bits= bits - s->last_bits;
-
-    for(i=1; i<s->avctx->thread_count; i++){
-        update_duplicate_context_after_me(s->thread_context[i], s);
-    }
-    s->avctx->execute(s->avctx, encode_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
-    for(i=1; i<s->avctx->thread_count; i++){
-        merge_context_after_encode(s, s->thread_context[i]);
-    }
-    emms_c();
-    return 0;
-}
-
-static void  denoise_dct_c(MpegEncContext *s, DCTELEM *block){
-    const int intra= s->mb_intra;
-    int i;
-
-    s->dct_count[intra]++;
-
-    for(i=0; i<64; i++){
-        int level= block[i];
-
-        if(level){
-            if(level>0){
-                s->dct_error_sum[intra][i] += level;
-                level -= s->dct_offset[intra][i];
-                if(level<0) level=0;
-            }else{
-                s->dct_error_sum[intra][i] -= level;
-                level += s->dct_offset[intra][i];
-                if(level>0) level=0;
-            }
-            block[i]= level;
-        }
-    }
-}
-
-static int dct_quantize_trellis_c(MpegEncContext *s,
-                        DCTELEM *block, int n,
-                        int qscale, int *overflow){
-    const int *qmat;
-    const uint8_t *scantable= s->intra_scantable.scantable;
-    const uint8_t *perm_scantable= s->intra_scantable.permutated;
-    int max=0;
-    unsigned int threshold1, threshold2;
-    int bias=0;
-    int run_tab[65];
-    int level_tab[65];
-    int score_tab[65];
-    int survivor[65];
-    int survivor_count;
-    int last_run=0;
-    int last_level=0;
-    int last_score= 0;
-    int last_i;
-    int coeff[2][64];
-    int coeff_count[64];
-    int qmul, qadd, start_i, last_non_zero, i, dc;
-    const int esc_length= s->ac_esc_length;
-    uint8_t * length;
-    uint8_t * last_length;
-    const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
-
-    s->dsp.fdct (block);
-
-    if(s->dct_error_sum)
-        s->denoise_dct(s, block);
-    qmul= qscale*16;
-    qadd= ((qscale-1)|1)*8;
-
-    if (s->mb_intra) {
-        int q;
-        if (!s->h263_aic) {
-            if (n < 4)
-                q = s->y_dc_scale;
-            else
-                q = s->c_dc_scale;
-            q = q << 3;
-        } else{
-            /* For AIC we skip quant/dequant of INTRADC */
-            q = 1 << 3;
-            qadd=0;
-        }
-
-        /* note: block[0] is assumed to be positive */
-        block[0] = (block[0] + (q >> 1)) / q;
-        start_i = 1;
-        last_non_zero = 0;
-        qmat = s->q_intra_matrix[qscale];
-        if(s->mpeg_quant || s->out_format == FMT_MPEG1)
-            bias= 1<<(QMAT_SHIFT-1);
-        length     = s->intra_ac_vlc_length;
-        last_length= s->intra_ac_vlc_last_length;
-    } else {
-        start_i = 0;
-        last_non_zero = -1;
-        qmat = s->q_inter_matrix[qscale];
-        length     = s->inter_ac_vlc_length;
-        last_length= s->inter_ac_vlc_last_length;
-    }
-    last_i= start_i;
-
-    threshold1= (1<<QMAT_SHIFT) - bias - 1;
-    threshold2= (threshold1<<1);
-
-    for(i=63; i>=start_i; i--) {
-        const int j = scantable[i];
-        int level = block[j] * qmat[j];
-
-        if(((unsigned)(level+threshold1))>threshold2){
-            last_non_zero = i;
-            break;
-        }
-    }
-
-    for(i=start_i; i<=last_non_zero; i++) {
-        const int j = scantable[i];
-        int level = block[j] * qmat[j];
-
-//        if(   bias+level >= (1<<(QMAT_SHIFT - 3))
-//           || bias-level >= (1<<(QMAT_SHIFT - 3))){
-        if(((unsigned)(level+threshold1))>threshold2){
-            if(level>0){
-                level= (bias + level)>>QMAT_SHIFT;
-                coeff[0][i]= level;
-                coeff[1][i]= level-1;
-//                coeff[2][k]= level-2;
-            }else{
-                level= (bias - level)>>QMAT_SHIFT;
-                coeff[0][i]= -level;
-                coeff[1][i]= -level+1;
-//                coeff[2][k]= -level+2;
-            }
-            coeff_count[i]= FFMIN(level, 2);
-            assert(coeff_count[i]);
-            max |=level;
-        }else{
-            coeff[0][i]= (level>>31)|1;
-            coeff_count[i]= 1;
-        }
-    }
-
-    *overflow= s->max_qcoeff < max; //overflow might have happened
-
-    if(last_non_zero < start_i){
-        memset(block + start_i, 0, (64-start_i)*sizeof(DCTELEM));
-        return last_non_zero;
-    }
-
-    score_tab[start_i]= 0;
-    survivor[0]= start_i;
-    survivor_count= 1;
-
-    for(i=start_i; i<=last_non_zero; i++){
-        int level_index, j;
-        const int dct_coeff= FFABS(block[ scantable[i] ]);
-        const int zero_distoration= dct_coeff*dct_coeff;
-        int best_score=256*256*256*120;
-        for(level_index=0; level_index < coeff_count[i]; level_index++){
-            int distoration;
-            int level= coeff[level_index][i];
-            const int alevel= FFABS(level);
-            int unquant_coeff;
-
-            assert(level);
-
-            if(s->out_format == FMT_H263){
-                unquant_coeff= alevel*qmul + qadd;
-            }else{ //MPEG1
-                j= s->dsp.idct_permutation[ scantable[i] ]; //FIXME optimize
-                if(s->mb_intra){
-                        unquant_coeff = (int)(  alevel  * qscale * s->intra_matrix[j]) >> 3;
-                        unquant_coeff =   (unquant_coeff - 1) | 1;
-                }else{
-                        unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[j])) >> 4;
-                        unquant_coeff =   (unquant_coeff - 1) | 1;
-                }
-                unquant_coeff<<= 3;
-            }
+            } else if(s->codec_id != CODEC_ID_WMV2){
+                add_dct(s, block[0], 0, dest_y                          , dct_linesize);
+                add_dct(s, block[1], 1, dest_y              + block_size, dct_linesize);
+                add_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize);
+                add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
 
-            distoration= (unquant_coeff - dct_coeff) * (unquant_coeff - dct_coeff) - zero_distoration;
-            level+=64;
-            if((level&(~127)) == 0){
-                for(j=survivor_count-1; j>=0; j--){
-                    int run= i - survivor[j];
-                    int score= distoration + length[UNI_AC_ENC_INDEX(run, level)]*lambda;
-                    score += score_tab[i-run];
-
-                    if(score < best_score){
-                        best_score= score;
-                        run_tab[i+1]= run;
-                        level_tab[i+1]= level-64;
-                    }
-                }
+                if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
+                    if(s->chroma_y_shift){//Chroma420
+                        add_dct(s, block[4], 4, dest_cb, uvlinesize);
+                        add_dct(s, block[5], 5, dest_cr, uvlinesize);
+                    }else{
+                        //chroma422
+                        dct_linesize = uvlinesize << s->interlaced_dct;
+                        dct_offset =(s->interlaced_dct)? uvlinesize : uvlinesize*8;
 
-                if(s->out_format == FMT_H263){
-                    for(j=survivor_count-1; j>=0; j--){
-                        int run= i - survivor[j];
-                        int score= distoration + last_length[UNI_AC_ENC_INDEX(run, level)]*lambda;
-                        score += score_tab[i-run];
-                        if(score < last_score){
-                            last_score= score;
-                            last_run= run;
-                            last_level= level-64;
-                            last_i= i+1;
+                        add_dct(s, block[4], 4, dest_cb, dct_linesize);
+                        add_dct(s, block[5], 5, dest_cr, dct_linesize);
+                        add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
+                        add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
+                        if(!s->chroma_x_shift){//Chroma444
+                            add_dct(s, block[8], 8, dest_cb+8, dct_linesize);
+                            add_dct(s, block[9], 9, dest_cr+8, dct_linesize);
+                            add_dct(s, block[10], 10, dest_cb+8+dct_offset, dct_linesize);
+                            add_dct(s, block[11], 11, dest_cr+8+dct_offset, dct_linesize);
                         }
                     }
-                }
-            }else{
-                distoration += esc_length*lambda;
-                for(j=survivor_count-1; j>=0; j--){
-                    int run= i - survivor[j];
-                    int score= distoration + score_tab[i-run];
-
-                    if(score < best_score){
-                        best_score= score;
-                        run_tab[i+1]= run;
-                        level_tab[i+1]= level-64;
-                    }
-                }
+                }//fi gray
+            }
+            else if (ENABLE_WMV2) {
+                ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
+            }
+        } else {
+            /* dct only in intra block */
+            if(s->encoding || !(s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO)){
+                put_dct(s, block[0], 0, dest_y                          , dct_linesize, s->qscale);
+                put_dct(s, block[1], 1, dest_y              + block_size, dct_linesize, s->qscale);
+                put_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize, s->qscale);
+                put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
 
-                if(s->out_format == FMT_H263){
-                  for(j=survivor_count-1; j>=0; j--){
-                        int run= i - survivor[j];
-                        int score= distoration + score_tab[i-run];
-                        if(score < last_score){
-                            last_score= score;
-                            last_run= run;
-                            last_level= level-64;
-                            last_i= i+1;
-                        }
+                if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
+                    if(s->chroma_y_shift){
+                        put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
+                        put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
+                    }else{
+                        dct_offset >>=1;
+                        dct_linesize >>=1;
+                        put_dct(s, block[4], 4, dest_cb,              dct_linesize, s->chroma_qscale);
+                        put_dct(s, block[5], 5, dest_cr,              dct_linesize, s->chroma_qscale);
+                        put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
+                        put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
                     }
                 }
-            }
-        }
-
-        score_tab[i+1]= best_score;
+            }else{
+                s->dsp.idct_put(dest_y                          , dct_linesize, block[0]);
+                s->dsp.idct_put(dest_y              + block_size, dct_linesize, block[1]);
+                s->dsp.idct_put(dest_y + dct_offset             , dct_linesize, block[2]);
+                s->dsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
 
-        //Note: there is a vlc code in mpeg4 which is 1 bit shorter then another one with a shorter run and the same level
-        if(last_non_zero <= 27){
-            for(; survivor_count; survivor_count--){
-                if(score_tab[ survivor[survivor_count-1] ] <= best_score)
-                    break;
-            }
-        }else{
-            for(; survivor_count; survivor_count--){
-                if(score_tab[ survivor[survivor_count-1] ] <= best_score + lambda)
-                    break;
-            }
-        }
+                if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
+                    if(s->chroma_y_shift){
+                        s->dsp.idct_put(dest_cb, uvlinesize, block[4]);
+                        s->dsp.idct_put(dest_cr, uvlinesize, block[5]);
+                    }else{
 
-        survivor[ survivor_count++ ]= i+1;
-    }
+                        dct_linesize = uvlinesize << s->interlaced_dct;
+                        dct_offset =(s->interlaced_dct)? uvlinesize : uvlinesize*8;
 
-    if(s->out_format != FMT_H263){
-        last_score= 256*256*256*120;
-        for(i= survivor[0]; i<=last_non_zero + 1; i++){
-            int score= score_tab[i];
-            if(i) score += lambda*2; //FIXME exacter?
-
-            if(score < last_score){
-                last_score= score;
-                last_i= i;
-                last_level= level_tab[i];
-                last_run= run_tab[i];
+                        s->dsp.idct_put(dest_cb,              dct_linesize, block[4]);
+                        s->dsp.idct_put(dest_cr,              dct_linesize, block[5]);
+                        s->dsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
+                        s->dsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
+                        if(!s->chroma_x_shift){//Chroma444
+                            s->dsp.idct_put(dest_cb + 8,              dct_linesize, block[8]);
+                            s->dsp.idct_put(dest_cr + 8,              dct_linesize, block[9]);
+                            s->dsp.idct_put(dest_cb + 8 + dct_offset, dct_linesize, block[10]);
+                            s->dsp.idct_put(dest_cr + 8 + dct_offset, dct_linesize, block[11]);
+                        }
+                    }
+                }//gray
             }
         }
-    }
-
-    s->coded_score[n] = last_score;
-
-    dc= FFABS(block[0]);
-    last_non_zero= last_i - 1;
-    memset(block + start_i, 0, (64-start_i)*sizeof(DCTELEM));
-
-    if(last_non_zero < start_i)
-        return last_non_zero;
-
-    if(last_non_zero == 0 && start_i == 0){
-        int best_level= 0;
-        int best_score= dc * dc;
-
-        for(i=0; i<coeff_count[0]; i++){
-            int level= coeff[i][0];
-            int alevel= FFABS(level);
-            int unquant_coeff, score, distortion;
-
-            if(s->out_format == FMT_H263){
-                    unquant_coeff= (alevel*qmul + qadd)>>3;
-            }else{ //MPEG1
-                    unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[0])) >> 4;
-                    unquant_coeff =   (unquant_coeff - 1) | 1;
-            }
-            unquant_coeff = (unquant_coeff + 4) >> 3;
-            unquant_coeff<<= 3 + 3;
-
-            distortion= (unquant_coeff - dc) * (unquant_coeff - dc);
-            level+=64;
-            if((level&(~127)) == 0) score= distortion + last_length[UNI_AC_ENC_INDEX(0, level)]*lambda;
-            else                    score= distortion + esc_length*lambda;
-
-            if(score < best_score){
-                best_score= score;
-                best_level= level - 64;
-            }
+skip_idct:
+        if(!readable){
+            s->dsp.put_pixels_tab[0][0](s->dest[0], dest_y ,   linesize,16);
+            s->dsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
+            s->dsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
         }
-        block[0]= best_level;
-        s->coded_score[n] = best_score - dc*dc;
-        if(best_level == 0) return -1;
-        else                return last_non_zero;
-    }
-
-    i= last_i;
-    assert(last_level);
-
-    block[ perm_scantable[last_non_zero] ]= last_level;
-    i -= last_run + 1;
-
-    for(; i>start_i; i -= run_tab[i] + 1){
-        block[ perm_scantable[i-1] ]= level_tab[i];
     }
-
-    return last_non_zero;
 }
 
-//#define REFINE_STATS 1
-static int16_t basis[64][64];
-
-static void build_basis(uint8_t *perm){
-    int i, j, x, y;
-    emms_c();
-    for(i=0; i<8; i++){
-        for(j=0; j<8; j++){
-            for(y=0; y<8; y++){
-                for(x=0; x<8; x++){
-                    double s= 0.25*(1<<BASIS_SHIFT);
-                    int index= 8*i + j;
-                    int perm_index= perm[index];
-                    if(i==0) s*= sqrt(0.5);
-                    if(j==0) s*= sqrt(0.5);
-                    basis[perm_index][8*x + y]= lrintf(s * cos((M_PI/8.0)*i*(x+0.5)) * cos((M_PI/8.0)*j*(y+0.5)));
-                }
-            }
-        }
-    }
+void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]){
+    if(s->avctx->lowres) MPV_decode_mb_internal(s, block, 1);
+    else                  MPV_decode_mb_internal(s, block, 0);
 }
 
-static int dct_quantize_refine(MpegEncContext *s, //FIXME breaks denoise?
-                        DCTELEM *block, int16_t *weight, DCTELEM *orig,
-                        int n, int qscale){
-    int16_t rem[64];
-    DECLARE_ALIGNED_16(DCTELEM, d1[64]);
-    const int *qmat;
-    const uint8_t *scantable= s->intra_scantable.scantable;
-    const uint8_t *perm_scantable= s->intra_scantable.permutated;
-//    unsigned int threshold1, threshold2;
-//    int bias=0;
-    int run_tab[65];
-    int prev_run=0;
-    int prev_level=0;
-    int qmul, qadd, start_i, last_non_zero, i, dc;
-    uint8_t * length;
-    uint8_t * last_length;
-    int lambda;
-    int rle_index, run, q, sum;
-#ifdef REFINE_STATS
-static int count=0;
-static int after_last=0;
-static int to_zero=0;
-static int from_zero=0;
-static int raise=0;
-static int lower=0;
-static int messed_sign=0;
-#endif
+/**
+ *
+ * @param h is the normal height, this will be reduced automatically if needed for the last row
+ */
+void ff_draw_horiz_band(MpegEncContext *s, int y, int h){
+    if (s->avctx->draw_horiz_band) {
+        AVFrame *src;
+        int offset[4];
 
-    if(basis[0][0] == 0)
-        build_basis(s->dsp.idct_permutation);
-
-    qmul= qscale*2;
-    qadd= (qscale-1)|1;
-    if (s->mb_intra) {
-        if (!s->h263_aic) {
-            if (n < 4)
-                q = s->y_dc_scale;
-            else
-                q = s->c_dc_scale;
-        } else{
-            /* For AIC we skip quant/dequant of INTRADC */
-            q = 1;
-            qadd=0;
+        if(s->picture_structure != PICT_FRAME){
+            h <<= 1;
+            y <<= 1;
+            if(s->first_field  && !(s->avctx->slice_flags&SLICE_FLAG_ALLOW_FIELD)) return;
         }
-        q <<= RECON_SHIFT-3;
-        /* note: block[0] is assumed to be positive */
-        dc= block[0]*q;
-//        block[0] = (block[0] + (q >> 1)) / q;
-        start_i = 1;
-        qmat = s->q_intra_matrix[qscale];
-//        if(s->mpeg_quant || s->out_format == FMT_MPEG1)
-//            bias= 1<<(QMAT_SHIFT-1);
-        length     = s->intra_ac_vlc_length;
-        last_length= s->intra_ac_vlc_last_length;
-    } else {
-        dc= 0;
-        start_i = 0;
-        qmat = s->q_inter_matrix[qscale];
-        length     = s->inter_ac_vlc_length;
-        last_length= s->inter_ac_vlc_last_length;
-    }
-    last_non_zero = s->block_last_index[n];
-
-#ifdef REFINE_STATS
-{START_TIMER
-#endif
-    dc += (1<<(RECON_SHIFT-1));
-    for(i=0; i<64; i++){
-        rem[i]= dc - (orig[i]<<RECON_SHIFT); //FIXME  use orig dirrectly instead of copying to rem[]
-    }
-#ifdef REFINE_STATS
-STOP_TIMER("memset rem[]")}
-#endif
-    sum=0;
-    for(i=0; i<64; i++){
-        int one= 36;
-        int qns=4;
-        int w;
 
-        w= FFABS(weight[i]) + qns*one;
-        w= 15 + (48*qns*one + w/2)/w; // 16 .. 63
+        h= FFMIN(h, s->avctx->height - y);
 
-        weight[i] = w;
-//        w=weight[i] = (63*qns + (w/2)) / w;
+        if(s->pict_type==FF_B_TYPE || s->low_delay || (s->avctx->slice_flags&SLICE_FLAG_CODED_ORDER))
+            src= (AVFrame*)s->current_picture_ptr;
+        else if(s->last_picture_ptr)
+            src= (AVFrame*)s->last_picture_ptr;
+        else
+            return;
 
-        assert(w>0);
-        assert(w<(1<<6));
-        sum += w*w;
-    }
-    lambda= sum*(uint64_t)s->lambda2 >> (FF_LAMBDA_SHIFT - 6 + 6 + 6 + 6);
-#ifdef REFINE_STATS
-{START_TIMER
-#endif
-    run=0;
-    rle_index=0;
-    for(i=start_i; i<=last_non_zero; i++){
-        int j= perm_scantable[i];
-        const int level= block[j];
-        int coeff;
-
-        if(level){
-            if(level<0) coeff= qmul*level - qadd;
-            else        coeff= qmul*level + qadd;
-            run_tab[rle_index++]=run;
-            run=0;
-
-            s->dsp.add_8x8basis(rem, basis[j], coeff);
+        if(s->pict_type==FF_B_TYPE && s->picture_structure == PICT_FRAME && s->out_format != FMT_H264){
+            offset[0]=
+            offset[1]=
+            offset[2]=
+            offset[3]= 0;
         }else{
-            run++;
-        }
-    }
-#ifdef REFINE_STATS
-if(last_non_zero>0){
-STOP_TIMER("init rem[]")
-}
-}
-
-{START_TIMER
-#endif
-    for(;;){
-        int best_score=s->dsp.try_8x8basis(rem, weight, basis[0], 0);
-        int best_coeff=0;
-        int best_change=0;
-        int run2, best_unquant_change=0, analyze_gradient;
-#ifdef REFINE_STATS
-{START_TIMER
-#endif
-        analyze_gradient = last_non_zero > 2 || s->avctx->quantizer_noise_shaping >= 3;
-
-        if(analyze_gradient){
-#ifdef REFINE_STATS
-{START_TIMER
-#endif
-            for(i=0; i<64; i++){
-                int w= weight[i];
-
-                d1[i] = (rem[i]*w*w + (1<<(RECON_SHIFT+12-1)))>>(RECON_SHIFT+12);
-            }
-#ifdef REFINE_STATS
-STOP_TIMER("rem*w*w")}
-{START_TIMER
-#endif
-            s->dsp.fdct(d1);
-#ifdef REFINE_STATS
-STOP_TIMER("dct")}
-#endif
-        }
-
-        if(start_i){
-            const int level= block[0];
-            int change, old_coeff;
-
-            assert(s->mb_intra);
-
-            old_coeff= q*level;
-
-            for(change=-1; change<=1; change+=2){
-                int new_level= level + change;
-                int score, new_coeff;
-
-                new_coeff= q*new_level;
-                if(new_coeff >= 2048 || new_coeff < 0)
-                    continue;
-
-                score= s->dsp.try_8x8basis(rem, weight, basis[0], new_coeff - old_coeff);
-                if(score<best_score){
-                    best_score= score;
-                    best_coeff= 0;
-                    best_change= change;
-                    best_unquant_change= new_coeff - old_coeff;
-                }
-            }
+            offset[0]= y * s->linesize;
+            offset[1]=
+            offset[2]= (y >> s->chroma_y_shift) * s->uvlinesize;
+            offset[3]= 0;
         }
 
-        run=0;
-        rle_index=0;
-        run2= run_tab[rle_index++];
-        prev_level=0;
-        prev_run=0;
-
-        for(i=start_i; i<64; i++){
-            int j= perm_scantable[i];
-            const int level= block[j];
-            int change, old_coeff;
-
-            if(s->avctx->quantizer_noise_shaping < 3 && i > last_non_zero + 1)
-                break;
-
-            if(level){
-                if(level<0) old_coeff= qmul*level - qadd;
-                else        old_coeff= qmul*level + qadd;
-                run2= run_tab[rle_index++]; //FIXME ! maybe after last
-            }else{
-                old_coeff=0;
-                run2--;
-                assert(run2>=0 || i >= last_non_zero );
-            }
-
-            for(change=-1; change<=1; change+=2){
-                int new_level= level + change;
-                int score, new_coeff, unquant_change;
-
-                score=0;
-                if(s->avctx->quantizer_noise_shaping < 2 && FFABS(new_level) > FFABS(level))
-                   continue;
-
-                if(new_level){
-                    if(new_level<0) new_coeff= qmul*new_level - qadd;
-                    else            new_coeff= qmul*new_level + qadd;
-                    if(new_coeff >= 2048 || new_coeff <= -2048)
-                        continue;
-                    //FIXME check for overflow
-
-                    if(level){
-                        if(level < 63 && level > -63){
-                            if(i < last_non_zero)
-                                score +=   length[UNI_AC_ENC_INDEX(run, new_level+64)]
-                                         - length[UNI_AC_ENC_INDEX(run, level+64)];
-                            else
-                                score +=   last_length[UNI_AC_ENC_INDEX(run, new_level+64)]
-                                         - last_length[UNI_AC_ENC_INDEX(run, level+64)];
-                        }
-                    }else{
-                        assert(FFABS(new_level)==1);
-
-                        if(analyze_gradient){
-                            int g= d1[ scantable[i] ];
-                            if(g && (g^new_level) >= 0)
-                                continue;
-                        }
-
-                        if(i < last_non_zero){
-                            int next_i= i + run2 + 1;
-                            int next_level= block[ perm_scantable[next_i] ] + 64;
-
-                            if(next_level&(~127))
-                                next_level= 0;
-
-                            if(next_i < last_non_zero)
-                                score +=   length[UNI_AC_ENC_INDEX(run, 65)]
-                                         + length[UNI_AC_ENC_INDEX(run2, next_level)]
-                                         - length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
-                            else
-                                score +=  length[UNI_AC_ENC_INDEX(run, 65)]
-                                        + last_length[UNI_AC_ENC_INDEX(run2, next_level)]
-                                        - last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
-                        }else{
-                            score += last_length[UNI_AC_ENC_INDEX(run, 65)];
-                            if(prev_level){
-                                score +=  length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
-                                        - last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
-                            }
-                        }
-                    }
-                }else{
-                    new_coeff=0;
-                    assert(FFABS(level)==1);
-
-                    if(i < last_non_zero){
-                        int next_i= i + run2 + 1;
-                        int next_level= block[ perm_scantable[next_i] ] + 64;
-
-                        if(next_level&(~127))
-                            next_level= 0;
-
-                        if(next_i < last_non_zero)
-                            score +=   length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
-                                     - length[UNI_AC_ENC_INDEX(run2, next_level)]
-                                     - length[UNI_AC_ENC_INDEX(run, 65)];
-                        else
-                            score +=   last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
-                                     - last_length[UNI_AC_ENC_INDEX(run2, next_level)]
-                                     - length[UNI_AC_ENC_INDEX(run, 65)];
-                    }else{
-                        score += -last_length[UNI_AC_ENC_INDEX(run, 65)];
-                        if(prev_level){
-                            score +=  last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
-                                    - length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
-                        }
-                    }
-                }
-
-                score *= lambda;
+        emms_c();
 
-                unquant_change= new_coeff - old_coeff;
-                assert((score < 100*lambda && score > -100*lambda) || lambda==0);
+        s->avctx->draw_horiz_band(s->avctx, src, offset,
+                                  y, s->picture_structure, h);
+    }
+}
 
-                score+= s->dsp.try_8x8basis(rem, weight, basis[j], unquant_change);
-                if(score<best_score){
-                    best_score= score;
-                    best_coeff= i;
-                    best_change= change;
-                    best_unquant_change= unquant_change;
-                }
-            }
-            if(level){
-                prev_level= level + 64;
-                if(prev_level&(~127))
-                    prev_level= 0;
-                prev_run= run;
-                run=0;
-            }else{
-                run++;
-            }
-        }
-#ifdef REFINE_STATS
-STOP_TIMER("iterative step")}
-#endif
+void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
+    const int linesize= s->current_picture.linesize[0]; //not s->linesize as this would be wrong for field pics
+    const int uvlinesize= s->current_picture.linesize[1];
+    const int mb_size= 4 - s->avctx->lowres;
 
-        if(best_change){
-            int j= perm_scantable[ best_coeff ];
+    s->block_index[0]= s->b8_stride*(s->mb_y*2    ) - 2 + s->mb_x*2;
+    s->block_index[1]= s->b8_stride*(s->mb_y*2    ) - 1 + s->mb_x*2;
+    s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
+    s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
+    s->block_index[4]= s->mb_stride*(s->mb_y + 1)                + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
+    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;
+    //block_index is not used by mpeg2, so it is not affected by chroma_format
 
-            block[j] += best_change;
+    s->dest[0] = s->current_picture.data[0] + ((s->mb_x - 1) << mb_size);
+    s->dest[1] = s->current_picture.data[1] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
+    s->dest[2] = s->current_picture.data[2] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
 
-            if(best_coeff > last_non_zero){
-                last_non_zero= best_coeff;
-                assert(block[j]);
-#ifdef REFINE_STATS
-after_last++;
-#endif
-            }else{
-#ifdef REFINE_STATS
-if(block[j]){
-    if(block[j] - best_change){
-        if(FFABS(block[j]) > FFABS(block[j] - best_change)){
-            raise++;
-        }else{
-            lower++;
-        }
-    }else{
-        from_zero++;
+    if(!(s->pict_type==FF_B_TYPE && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME))
+    {
+        s->dest[0] += s->mb_y *   linesize << mb_size;
+        s->dest[1] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
+        s->dest[2] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
     }
-}else{
-    to_zero++;
-}
-#endif
-                for(; last_non_zero>=start_i; last_non_zero--){
-                    if(block[perm_scantable[last_non_zero]])
-                        break;
-                }
-            }
-#ifdef REFINE_STATS
-count++;
-if(256*256*256*64 % count == 0){
-    printf("after_last:%d to_zero:%d from_zero:%d raise:%d lower:%d sign:%d xyp:%d/%d/%d\n", after_last, to_zero, from_zero, raise, lower, messed_sign, s->mb_x, s->mb_y, s->picture_number);
 }
-#endif
-            run=0;
-            rle_index=0;
-            for(i=start_i; i<=last_non_zero; i++){
-                int j= perm_scantable[i];
-                const int level= block[j];
-
-                 if(level){
-                     run_tab[rle_index++]=run;
-                     run=0;
-                 }else{
-                     run++;
-                 }
-            }
 
-            s->dsp.add_8x8basis(rem, basis[j], best_unquant_change);
-        }else{
-            break;
-        }
-    }
-#ifdef REFINE_STATS
-if(last_non_zero>0){
-STOP_TIMER("iterative search")
-}
-}
-#endif
+void ff_mpeg_flush(AVCodecContext *avctx){
+    int i;
+    MpegEncContext *s = avctx->priv_data;
 
-    return last_non_zero;
-}
+    if(s==NULL || s->picture==NULL)
+        return;
 
-static int dct_quantize_c(MpegEncContext *s,
-                        DCTELEM *block, int n,
-                        int qscale, int *overflow)
-{
-    int i, j, level, last_non_zero, q, start_i;
-    const int *qmat;
-    const uint8_t *scantable= s->intra_scantable.scantable;
-    int bias;
-    int max=0;
-    unsigned int threshold1, threshold2;
-
-    s->dsp.fdct (block);
-
-    if(s->dct_error_sum)
-        s->denoise_dct(s, block);
-
-    if (s->mb_intra) {
-        if (!s->h263_aic) {
-            if (n < 4)
-                q = s->y_dc_scale;
-            else
-                q = s->c_dc_scale;
-            q = q << 3;
-        } else
-            /* For AIC we skip quant/dequant of INTRADC */
-            q = 1 << 3;
-
-        /* note: block[0] is assumed to be positive */
-        block[0] = (block[0] + (q >> 1)) / q;
-        start_i = 1;
-        last_non_zero = 0;
-        qmat = s->q_intra_matrix[qscale];
-        bias= s->intra_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
-    } else {
-        start_i = 0;
-        last_non_zero = -1;
-        qmat = s->q_inter_matrix[qscale];
-        bias= s->inter_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
-    }
-    threshold1= (1<<QMAT_SHIFT) - bias - 1;
-    threshold2= (threshold1<<1);
-    for(i=63;i>=start_i;i--) {
-        j = scantable[i];
-        level = block[j] * qmat[j];
-
-        if(((unsigned)(level+threshold1))>threshold2){
-            last_non_zero = i;
-            break;
-        }else{
-            block[j]=0;
-        }
-    }
-    for(i=start_i; i<=last_non_zero; i++) {
-        j = scantable[i];
-        level = block[j] * qmat[j];
-
-//        if(   bias+level >= (1<<QMAT_SHIFT)
-//           || bias-level >= (1<<QMAT_SHIFT)){
-        if(((unsigned)(level+threshold1))>threshold2){
-            if(level>0){
-                level= (bias + level)>>QMAT_SHIFT;
-                block[j]= level;
-            }else{
-                level= (bias - level)>>QMAT_SHIFT;
-                block[j]= -level;
-            }
-            max |=level;
-        }else{
-            block[j]=0;
-        }
+    for(i=0; i<MAX_PICTURE_COUNT; i++){
+       if(s->picture[i].data[0] && (   s->picture[i].type == FF_BUFFER_TYPE_INTERNAL
+                                    || s->picture[i].type == FF_BUFFER_TYPE_USER))
+        avctx->release_buffer(avctx, (AVFrame*)&s->picture[i]);
     }
-    *overflow= s->max_qcoeff < max; //overflow might have happened
+    s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
 
-    /* we need this permutation so that we correct the IDCT, we only permute the !=0 elements */
-    if (s->dsp.idct_permutation_type != FF_NO_IDCT_PERM)
-        ff_block_permute(block, s->dsp.idct_permutation, scantable, last_non_zero);
+    s->mb_x= s->mb_y= 0;
 
-    return last_non_zero;
+    s->parse_context.state= -1;
+    s->parse_context.frame_start_found= 0;
+    s->parse_context.overread= 0;
+    s->parse_context.overread_index= 0;
+    s->parse_context.index= 0;
+    s->parse_context.last_index= 0;
+    s->bitstream_buffer_size=0;
+    s->pp_time=0;
 }
 
-#endif //CONFIG_ENCODERS
-
 static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
                                    DCTELEM *block, int n, int qscale)
 {
@@ -6775,127 +2293,19 @@ static void dct_unquantize_h263_inter_c(MpegEncContext *s,
     }
 }
 
-#ifdef CONFIG_ENCODERS
-AVCodec h263_encoder = {
-    "h263",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_H263,
-    sizeof(MpegEncContext),
-    MPV_encode_init,
-    MPV_encode_picture,
-    MPV_encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
-};
-
-AVCodec h263p_encoder = {
-    "h263p",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_H263P,
-    sizeof(MpegEncContext),
-    MPV_encode_init,
-    MPV_encode_picture,
-    MPV_encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
-};
-
-AVCodec flv_encoder = {
-    "flv",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_FLV1,
-    sizeof(MpegEncContext),
-    MPV_encode_init,
-    MPV_encode_picture,
-    MPV_encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
-};
-
-AVCodec rv10_encoder = {
-    "rv10",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_RV10,
-    sizeof(MpegEncContext),
-    MPV_encode_init,
-    MPV_encode_picture,
-    MPV_encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
-};
-
-AVCodec rv20_encoder = {
-    "rv20",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_RV20,
-    sizeof(MpegEncContext),
-    MPV_encode_init,
-    MPV_encode_picture,
-    MPV_encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
-};
-
-AVCodec mpeg4_encoder = {
-    "mpeg4",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_MPEG4,
-    sizeof(MpegEncContext),
-    MPV_encode_init,
-    MPV_encode_picture,
-    MPV_encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
-    .capabilities= CODEC_CAP_DELAY,
-};
-
-AVCodec msmpeg4v1_encoder = {
-    "msmpeg4v1",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_MSMPEG4V1,
-    sizeof(MpegEncContext),
-    MPV_encode_init,
-    MPV_encode_picture,
-    MPV_encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
-};
-
-AVCodec msmpeg4v2_encoder = {
-    "msmpeg4v2",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_MSMPEG4V2,
-    sizeof(MpegEncContext),
-    MPV_encode_init,
-    MPV_encode_picture,
-    MPV_encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
-};
-
-AVCodec msmpeg4v3_encoder = {
-    "msmpeg4",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_MSMPEG4V3,
-    sizeof(MpegEncContext),
-    MPV_encode_init,
-    MPV_encode_picture,
-    MPV_encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
-};
-
-AVCodec wmv1_encoder = {
-    "wmv1",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_WMV1,
-    sizeof(MpegEncContext),
-    MPV_encode_init,
-    MPV_encode_picture,
-    MPV_encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
-};
+/**
+ * set qscale and update qscale dependent variables.
+ */
+void ff_set_qscale(MpegEncContext * s, int qscale)
+{
+    if (qscale < 1)
+        qscale = 1;
+    else if (qscale > 31)
+        qscale = 31;
 
-AVCodec mjpeg_encoder = {
-    "mjpeg",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_MJPEG,
-    sizeof(MpegEncContext),
-    MPV_encode_init,
-    MPV_encode_picture,
-    MPV_encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, -1},
-};
+    s->qscale = qscale;
+    s->chroma_qscale= s->chroma_qscale_table[qscale];
 
-#endif //CONFIG_ENCODERS
+    s->y_dc_scale= s->y_dc_scale_table[ qscale ];
+    s->c_dc_scale= s->c_dc_scale_table[ s->chroma_qscale ];
+}