Replace pitch_delay_int array with single variable.
[ffmpeg.git] / libavcodec / mpegvideo.c
index 8e4e4a2..35cde71 100644 (file)
@@ -1,8 +1,10 @@
 /*
  * The simplest mpeg encoder (well, it was the simplest!)
- * Copyright (c) 2000,2001 Fabrice Bellard.
+ * 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
  * 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>
  */
 
 /**
- * @file mpegvideo.c
+ * @file libavcodec/mpegvideo.c
  * The simplest mpeg encoder (well, it was the simplest!).
  */
 
 #include "avcodec.h"
 #include "dsputil.h"
 #include "mpegvideo.h"
+#include "mpegvideo_common.h"
 #include "mjpegenc.h"
 #include "msmpeg4.h"
 #include "faandct.h"
+#include "xvmc_internal.h"
 #include <limits.h>
 
 //#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,
@@ -55,22 +54,6 @@ 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... */
@@ -79,156 +62,29 @@ 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_FCODE+1][MAX_MV*2+1];
-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_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_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_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 than %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= av_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;
-    }
-}
+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,
+};
 
-#ifdef CONFIG_ENCODERS
-void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix){
-    int i;
+const enum PixelFormat ff_pixfmt_list_420[] = {
+    PIX_FMT_YUV420P,
+    PIX_FMT_NONE
+};
 
-    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 enum PixelFormat ff_hwaccel_pixfmt_list_420[] = {
+    PIX_FMT_VAAPI_VLD,
+    PIX_FMT_YUV420P,
+    PIX_FMT_NONE
+};
 
 const uint8_t *ff_find_start_code(const uint8_t * restrict p, const uint8_t *end, uint32_t * restrict state){
     int i;
@@ -255,13 +111,13 @@ 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)
+av_cold 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;
@@ -272,42 +128,22 @@ 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   HAVE_MMX
     MPV_common_init_mmx(s);
-#endif
-#ifdef ARCH_ALPHA
+#elif ARCH_ALPHA
     MPV_common_init_axp(s);
-#endif
-#ifdef HAVE_MLIB
+#elif CONFIG_MLIB
     MPV_common_init_mlib(s);
-#endif
-#ifdef HAVE_MMI
+#elif HAVE_MMI
     MPV_common_init_mmi(s);
-#endif
-#ifdef ARCH_ARMV4L
-    MPV_common_init_armv4l(s);
-#endif
-#ifdef ARCH_POWERPC
-    MPV_common_init_ppc(s);
-#endif
-#ifdef ARCH_BFIN
+#elif ARCH_ARM
+    MPV_common_init_arm(s);
+#elif HAVE_ALTIVEC
+    MPV_common_init_altivec(s);
+#elif ARCH_BFIN
     MPV_common_init_bfin(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
     */
@@ -324,88 +160,82 @@ int DCT_common_init(MpegEncContext *s)
     return 0;
 }
 
-static void copy_picture(Picture *dst, Picture *src){
+void ff_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);
+/**
+ * Releases a frame buffer
+ */
+static void free_frame_buffer(MpegEncContext *s, Picture *pic)
+{
+    s->avctx->release_buffer(s->avctx, (AVFrame*)pic);
+    av_freep(&pic->hwaccel_picture_private);
+}
 
-            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));
+/**
+ * Allocates a frame buffer
+ */
+static int alloc_frame_buffer(MpegEncContext *s, Picture *pic)
+{
+    int r;
+
+    if (s->avctx->hwaccel) {
+        assert(!pic->hwaccel_picture_private);
+        if (s->avctx->hwaccel->priv_data_size) {
+            pic->hwaccel_picture_private = av_mallocz(s->avctx->hwaccel->priv_data_size);
+            if (!pic->hwaccel_picture_private) {
+                av_log(s->avctx, AV_LOG_ERROR, "alloc_frame_buffer() failed (hwaccel private data allocation)\n");
+                return -1;
             }
         }
     }
+
+    r = s->avctx->get_buffer(s->avctx, (AVFrame*)pic);
+
+    if (r<0 || !pic->age || !pic->type || !pic->data[0]) {
+        av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %d %d %p)\n", r, pic->age, pic->type, pic->data[0]);
+        av_freep(&pic->hwaccel_picture_private);
+        return -1;
+    }
+
+    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");
+        free_frame_buffer(s, pic);
+        return -1;
+    }
+
+    if (pic->linesize[1] != pic->linesize[2]) {
+        av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (uv stride mismatch)\n");
+        free_frame_buffer(s, pic);
+        return -1;
+    }
+
+    return 0;
 }
-#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){
+int ff_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);
-
-        if(r<0 || !pic->age || !pic->type || !pic->data[0]){
-            av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %d %d %p)\n", r, pic->age, pic->type, pic->data[0]);
-            return -1;
-        }
-
-        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");
-            return -1;
-        }
-
-        if(pic->linesize[1] != pic->linesize[2]){
-            av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (uv stride mismatch)\n");
+        if (alloc_frame_buffer(s, pic) < 0)
             return -1;
-        }
 
         s->linesize  = pic->linesize[0];
         s->uvlinesize= pic->linesize[1];
@@ -420,8 +250,8 @@ 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))
@@ -447,12 +277,14 @@ static int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
     /* 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)
+    s->prev_pict_types[0]= s->dropable ? FF_B_TYPE : s->pict_type;
+    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)
+        free_frame_buffer(s, pic);
     return -1;
 }
 
@@ -463,7 +295,7 @@ static void free_picture(MpegEncContext *s, Picture *pic){
     int i;
 
     if(pic->data[0] && pic->type!=FF_BUFFER_TYPE_SHARED){
-        s->avctx->release_buffer(s->avctx, (AVFrame*)pic);
+        free_frame_buffer(s, pic);
     }
 
     av_freep(&pic->mb_var);
@@ -498,6 +330,7 @@ static int init_duplicate_context(MpegEncContext *s, MpegEncContext *base){
 
      //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->me.temp=         s->me.scratchpad;
     s->rd_scratchpad=   s->me.scratchpad;
     s->b_scratchpad=    s->me.scratchpad;
     s->obmc_scratchpad= s->me.scratchpad + 16;
@@ -512,7 +345,7 @@ static int init_duplicate_context(MpegEncContext *s, MpegEncContext *base){
     s->block= s->blocks[0];
 
     for(i=0;i<12;i++){
-        s->pblocks[i] = (short *)(&s->block[i]);
+        s->pblocks[i] = &s->block[i];
     }
     return 0;
 fail:
@@ -524,6 +357,7 @@ static void free_duplicate_context(MpegEncContext *s){
 
     av_freep(&s->allocated_edge_emu_buffer); s->edge_emu_buffer= NULL;
     av_freep(&s->me.scratchpad);
+    s->me.temp=
     s->rd_scratchpad=
     s->b_scratchpad=
     s->obmc_scratchpad= NULL;
@@ -540,6 +374,7 @@ static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src){
     COPY(allocated_edge_emu_buffer);
     COPY(edge_emu_buffer);
     COPY(me.scratchpad);
+    COPY(me.temp);
     COPY(rd_scratchpad);
     COPY(b_scratchpad);
     COPY(obmc_scratchpad);
@@ -566,35 +401,16 @@ void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src){
     memcpy(dst, src, sizeof(MpegEncContext));
     backup_duplicate_context(dst, &bak);
     for(i=0;i<12;i++){
-        dst->pblocks[i] = (short *)(&dst->block[i]);
+        dst->pblocks[i] = &dst->block[i];
     }
 //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;
@@ -620,33 +436,23 @@ 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){
-    int i;
-    MPV_common_defaults(s);
-
-    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)
+av_cold 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;
+    if(s->codec_id == CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
+        s->mb_height = (s->height + 31) / 32 * 2;
+    else
+        s->mb_height = (s->height + 15) / 16;
+
+    if(s->avctx->pix_fmt == PIX_FMT_NONE){
+        av_log(s->avctx, AV_LOG_ERROR, "decoding to PIX_FMT_NONE is not supported.\n");
+        return -1;
+    }
 
     if(s->avctx->thread_count > MAX_THREADS || (s->avctx->thread_count > s->mb_height && s->mb_height)){
         av_log(s->avctx, AV_LOG_ERROR, "too many threads\n");
@@ -657,7 +463,7 @@ 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;
@@ -748,6 +554,9 @@ int MPV_common_init(MpegEncContext *s)
         }
     }
     CHECKED_ALLOCZ(s->picture, MAX_PICTURE_COUNT * sizeof(Picture))
+    for(i = 0; i < MAX_PICTURE_COUNT; i++) {
+        avcodec_get_frame_defaults((AVFrame *)&s->picture[i]);
+    }
 
     CHECKED_ALLOCZ(s->error_status_table, mb_array_size*sizeof(uint8_t))
 
@@ -806,19 +615,21 @@ int MPV_common_init(MpegEncContext *s)
     s->parse_context.state= -1;
     if((s->avctx->debug&(FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) || (s->avctx->debug_mv)){
        s->visualization_buffer[0] = av_malloc((s->mb_width*16 + 2*EDGE_WIDTH) * s->mb_height*16 + 2*EDGE_WIDTH);
-       s->visualization_buffer[1] = av_malloc((s->mb_width*8 + EDGE_WIDTH) * s->mb_height*8 + EDGE_WIDTH);
-       s->visualization_buffer[2] = av_malloc((s->mb_width*8 + EDGE_WIDTH) * s->mb_height*8 + EDGE_WIDTH);
+       s->visualization_buffer[1] = av_malloc((s->mb_width*16 + 2*EDGE_WIDTH) * s->mb_height*16 + 2*EDGE_WIDTH);
+       s->visualization_buffer[2] = av_malloc((s->mb_width*16 + 2*EDGE_WIDTH) * s->mb_height*16 + 2*EDGE_WIDTH);
     }
 
     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;
@@ -915,679 +726,204 @@ void MPV_common_end(MpegEncContext *s)
     avcodec_default_free_buffers(s->avctx);
 }
 
-#ifdef CONFIG_ENCODERS
-
-/* init video encoder */
-int MPV_encode_init(AVCodecContext *avctx)
+void init_rl(RLTable *rl, uint8_t static_store[2][2*MAX_RUN + MAX_LEVEL + 3])
 {
-    MpegEncContext *s = avctx->priv_data;
-    int i;
-    int chroma_h_shift, chroma_v_shift;
+    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;
 
-    MPV_encode_defaults(s);
+    /* If table is static, we can quit if rl->max_level[0] is not NULL */
+    if(static_store && rl->max_level[0])
+        return;
 
-    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;
+    /* compute max_level[], max_run[] and index_run[] */
+    for(last=0;last<2;last++) {
+        if (last == 0) {
+            start = 0;
+            end = rl->last;
+        } else {
+            start = rl->last;
+            end = rl->n;
         }
-        break;
-    default:
-        if(avctx->pix_fmt != PIX_FMT_YUV420P){
-            av_log(avctx, AV_LOG_ERROR, "only YUV420 is supported\n");
-            return -1;
+
+        memset(max_level, 0, MAX_RUN + 1);
+        memset(max_run, 0, MAX_LEVEL + 1);
+        memset(index_run, rl->n, MAX_RUN + 1);
+        for(i=start;i<end;i++) {
+            run = rl->table_run[i];
+            level = rl->table_level[i];
+            if (index_run[run] == rl->n)
+                index_run[run] = i;
+            if (level > max_level[run])
+                max_level[run] = level;
+            if (run > max_run[level])
+                max_run[level] = run;
         }
+        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(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(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);
     }
+}
 
-    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;
-    }
+void init_vlc_rl(RLTable *rl)
+{
+    int i, q;
 
-    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;
+    for(q=0; q<32; q++){
+        int qmul= q*2;
+        int qadd= (q-1)|1;
+
+        if(q==0){
+            qmul=1;
+            qadd=0;
+        }
+        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;
+        }
     }
+}
 
-    s->me_method = avctx->me_method;
+int ff_find_unused_picture(MpegEncContext *s, int shared){
+    int i;
 
-    /* Fixed QSCALE */
-    s->fixed_qscale = !!(avctx->flags & CODEC_FLAG_QSCALE);
+    if(shared){
+        for(i=0; i<MAX_PICTURE_COUNT; i++){
+            if(s->picture[i].data[0]==NULL && s->picture[i].type==0) return i;
+        }
+    }else{
+        for(i=0; i<MAX_PICTURE_COUNT; i++){
+            if(s->picture[i].data[0]==NULL && s->picture[i].type!=0) return i; //FIXME
+        }
+        for(i=0; i<MAX_PICTURE_COUNT; i++){
+            if(s->picture[i].data[0]==NULL) return i;
+        }
+    }
 
-    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;
+    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;
+}
 
-    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);
-    s->q_scale_type= !!(s->flags2 & CODEC_FLAG2_NON_LINEAR_QUANT);
+static void update_noise_reduction(MpegEncContext *s){
+    int intra, i;
 
-    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;
-    }
+    for(intra=0; intra<2; intra++){
+        if(s->dct_count[intra] > (1<<16)){
+            for(i=0; i<64; i++){
+                s->dct_error_sum[intra][i] >>=1;
+            }
+            s->dct_count[intra] >>= 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");
+        for(i=0; i<64; i++){
+            s->dct_offset[intra][i]= (s->avctx->noise_reduction * s->dct_count[intra] + s->dct_error_sum[intra][i]/2) / (s->dct_error_sum[intra][i]+1);
+        }
     }
+}
 
-    if(avctx->rc_min_rate && avctx->rc_min_rate > avctx->bit_rate){
-        av_log(avctx, AV_LOG_ERROR, "bitrate below min bitrate\n");
-        return -1;
-    }
+/**
+ * generic function for encode/decode called after coding/decoding the header and before a frame is coded/decoded
+ */
+int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
+{
+    int i;
+    Picture *pic;
+    s->mb_skipped = 0;
 
-    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;
-    }
+    assert(s->last_picture_ptr==NULL || s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3);
 
-    if(avctx->rc_buffer_size && avctx->bit_rate*av_q2d(avctx->time_base) > avctx->rc_buffer_size){
-        av_log(avctx, AV_LOG_ERROR, "VBV buffer too small for bitrate\n");
-        return -1;
-    }
+    /* mark&release old frames */
+    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){
+          free_frame_buffer(s, s->last_picture_ptr);
 
-    if(avctx->bit_rate*av_q2d(avctx->time_base) > avctx->bit_rate_tolerance){
-        av_log(avctx, AV_LOG_ERROR, "bitrate tolerance too small for bitrate\n");
-        return -1;
+        /* release forgotten pictures */
+        /* if(mpeg124/h263) */
+        if(!s->encoding){
+            for(i=0; i<MAX_PICTURE_COUNT; i++){
+                if(s->picture[i].data[0] && &s->picture[i] != s->next_picture_ptr && s->picture[i].reference){
+                    av_log(avctx, AV_LOG_ERROR, "releasing zombie picture\n");
+                    free_frame_buffer(s, &s->picture[i]);
+                }
+            }
+        }
+      }
     }
+alloc:
+    if(!s->encoding){
+        /* release non reference frames */
+        for(i=0; i<MAX_PICTURE_COUNT; i++){
+            if(s->picture[i].data[0] && !s->picture[i].reference /*&& s->picture[i].type!=FF_BUFFER_TYPE_SHARED*/){
+                free_frame_buffer(s, &s->picture[i]);
+            }
+        }
 
-    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){
+        if(s->current_picture_ptr && s->current_picture_ptr->data[0]==NULL)
+            pic= 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= &s->picture[i];
+        }
 
-        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, set threshold to 1000000000\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->q_scale_type == 1){
-        if(s->codec_id != CODEC_ID_MPEG2VIDEO){
-            av_log(avctx, AV_LOG_ERROR, "non linear quant is only available for mpeg2\n");
-            return -1;
-        }
-        if(avctx->qmax > 12){
-            av_log(avctx, AV_LOG_ERROR, "non linear quant only supports qmax <= 12 currently\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_MJPEG:
-        s->out_format = FMT_MJPEG;
-        s->intra_only = 1; /* force intra only for jpeg */
-        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 (!(ENABLE_MJPEG_ENCODER || ENABLE_LJPEG_ENCODER)
-            || ff_mjpeg_encode_init(s) < 0)
-            return -1;
-        avctx->delay=0;
-        s->low_delay=1;
-        break;
-    case CODEC_ID_H261:
-        if (!ENABLE_H261_ENCODER)  return -1;
-        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_AC_PRED) ? 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);
-
-    if (ENABLE_H261_ENCODER && s->out_format == FMT_H261)
-        ff_h261_encode_init(s);
-    if (s->out_format == FMT_H263)
-        h263_encode_init(s);
-    if (ENABLE_MSMPEG4_ENCODER && 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 ((ENABLE_MJPEG_ENCODER || ENABLE_LJPEG_ENCODER) && s->out_format == FMT_MJPEG)
-        ff_mjpeg_encode_close(s);
-
-    av_freep(&avctx->extradata);
-
-    return 0;
-}
-
-#endif //CONFIG_ENCODERS
-
-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(static_store && rl->max_level[0])
-        return;
-
-    /* compute max_level[], max_run[] and index_run[] */
-    for(last=0;last<2;last++) {
-        if (last == 0) {
-            start = 0;
-            end = rl->last;
-        } else {
-            start = rl->last;
-            end = rl->n;
-        }
-
-        memset(max_level, 0, MAX_RUN + 1);
-        memset(max_run, 0, MAX_LEVEL + 1);
-        memset(index_run, rl->n, MAX_RUN + 1);
-        for(i=start;i<end;i++) {
-            run = rl->table_run[i];
-            level = rl->table_level[i];
-            if (index_run[run] == rl->n)
-                index_run[run] = i;
-            if (level > max_level[run])
-                max_level[run] = level;
-            if (run > max_run[level])
-                max_run[level] = run;
-        }
-        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(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(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)
-{
-    uint8_t *ptr, *last_line;
-    int i;
-
-    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 */
-    }
-}
-
-int ff_find_unused_picture(MpegEncContext *s, int shared){
-    int i;
-
-    if(shared){
-        for(i=0; i<MAX_PICTURE_COUNT; i++){
-            if(s->picture[i].data[0]==NULL && s->picture[i].type==0) return i;
-        }
-    }else{
-        for(i=0; i<MAX_PICTURE_COUNT; i++){
-            if(s->picture[i].data[0]==NULL && s->picture[i].type!=0) return i; //FIXME
-        }
-        for(i=0; i<MAX_PICTURE_COUNT; i++){
-            if(s->picture[i].data[0]==NULL) return i;
-        }
-    }
-
-    assert(0);
-    return -1;
-}
-
-static void update_noise_reduction(MpegEncContext *s){
-    int intra, i;
-
-    for(intra=0; intra<2; intra++){
-        if(s->dct_count[intra] > (1<<16)){
-            for(i=0; i<64; i++){
-                s->dct_error_sum[intra][i] >>=1;
-            }
-            s->dct_count[intra] >>= 1;
-        }
-
-        for(i=0; i<64; i++){
-            s->dct_offset[intra][i]= (s->avctx->noise_reduction * s->dct_count[intra] + s->dct_error_sum[intra][i]/2) / (s->dct_error_sum[intra][i]+1);
-        }
-    }
-}
-
-/**
- * generic function for encode/decode called after coding/decoding the header and before a frame is coded/decoded
- */
-int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
-{
-    int i;
-    AVFrame *pic;
-    s->mb_skipped = 0;
-
-    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->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3){
-        avctx->release_buffer(avctx, (AVFrame*)s->last_picture_ptr);
-
-        /* release forgotten pictures */
-        /* if(mpeg124/h263) */
-        if(!s->encoding){
-            for(i=0; i<MAX_PICTURE_COUNT; i++){
-                if(s->picture[i].data[0] && &s->picture[i] != s->next_picture_ptr && s->picture[i].reference){
-                    av_log(avctx, AV_LOG_ERROR, "releasing zombie picture\n");
-                    avctx->release_buffer(avctx, (AVFrame*)&s->picture[i]);
-                }
-            }
-        }
-      }
-    }
-alloc:
-    if(!s->encoding){
-        /* release non reference frames */
-        for(i=0; i<MAX_PICTURE_COUNT; i++){
-            if(s->picture[i].data[0] && !s->picture[i].reference /*&& s->picture[i].type!=FF_BUFFER_TYPE_SHARED*/){
-                s->avctx->release_buffer(s->avctx, (AVFrame*)&s->picture[i]);
-            }
-        }
-
-        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)
-        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++;
 
-        if( alloc_picture(s, (Picture*)pic, 0) < 0)
+        if(ff_alloc_picture(s, pic, 0) < 0)
             return -1;
 
-        s->current_picture_ptr= (Picture*)pic;
+        s->current_picture_ptr= pic;
         s->current_picture_ptr->top_field_first= s->top_field_first; //FIXME use only the vars from current_pic
         s->current_picture_ptr->interlaced_frame= !s->progressive_frame && !s->progressive_sequence;
     }
@@ -1595,11 +931,11 @@ 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);
+    ff_copy_picture(&s->current_picture, s->current_picture_ptr);
 
-    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;
@@ -1610,18 +946,18 @@ alloc:
         s->current_picture_ptr ? s->current_picture_ptr->data[0] : NULL,
         s->pict_type, s->dropable);*/
 
-    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->last_picture_ptr) ff_copy_picture(&s->last_picture, s->last_picture_ptr);
+    if(s->next_picture_ptr) ff_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) && !s->dropable){
+    if(s->pict_type != FF_I_TYPE && (s->last_picture_ptr==NULL || s->last_picture_ptr->data[0]==NULL) && !s->dropable && s->codec_id != CODEC_ID_H264){
         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){
@@ -1634,7 +970,7 @@ alloc:
     }
 
     s->hurry_up= s->avctx->hurry_up;
-    s->error_resilience= avctx->error_resilience;
+    s->error_recognition= avctx->error_recognition;
 
     /* 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 is not called for mpeg4 there yet */
@@ -1655,10 +991,9 @@ alloc:
         update_noise_reduction(s);
     }
 
-#ifdef HAVE_XVMC
-    if(s->avctx->xvmc_acceleration)
-        return XVMC_field_start(s, avctx);
-#endif
+    if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
+        return ff_xvmc_field_start(s, avctx);
+
     return 0;
 }
 
@@ -1667,22 +1002,24 @@ void MPV_frame_end(MpegEncContext *s)
 {
     int i;
     /* draw edge for correct motion prediction if outside */
-#ifdef HAVE_XVMC
-//just to make sure that all data is rendered.
-    if(s->avctx->xvmc_acceleration){
-        XVMC_field_end(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);
+    //just to make sure that all data is rendered.
+    if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration){
+        ff_xvmc_field_end(s);
+    }else if(!s->avctx->hwaccel
+       && !(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
+       && s->unrestricted_mv
+       && s->current_picture.reference
+       && !s->intra_only
+       && !(s->flags&CODEC_FLAG_EMU_EDGE)) {
+            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
@@ -1700,7 +1037,7 @@ void MPV_frame_end(MpegEncContext *s)
         /* release non-reference frames */
         for(i=0; i<MAX_PICTURE_COUNT; i++){
             if(s->picture[i].data[0] && !s->picture[i].reference /*&& s->picture[i].type!=FF_BUFFER_TYPE_SHARED*/){
-                s->avctx->release_buffer(s->avctx, (AVFrame*)&s->picture[i]);
+                free_frame_buffer(s, &s->picture[i]);
             }
         }
     }
@@ -1756,8 +1093,8 @@ 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;
         }
     }
 }
@@ -1800,7 +1137,7 @@ static void draw_arrow(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int
  */
 void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){
 
-    if(!pict || !pict->mb_type) return;
+    if(s->avctx->hwaccel || !pict || !pict->mb_type) return;
 
     if(s->avctx->debug&(FF_DEBUG_SKIP | FF_DEBUG_QP | FF_DEBUG_MB_TYPE)){
         int x,y;
@@ -1883,7 +1220,7 @@ void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){
         int mb_y;
         uint8_t *ptr;
         int i;
-        int h_chroma_shift, v_chroma_shift;
+        int h_chroma_shift, v_chroma_shift, block_height;
         const int width = s->avctx->width;
         const int height= s->avctx->height;
         const int mv_sample_log2= 4 - pict->motion_subsample_log2;
@@ -1897,6 +1234,7 @@ void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){
         }
         pict->type= FF_BUFFER_TYPE_COPY;
         ptr= pict->data[0];
+        block_height = 16>>v_chroma_shift;
 
         for(mb_y=0; mb_y<s->mb_height; mb_y++){
             int mb_x;
@@ -1974,9 +1312,9 @@ void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){
                 if((s->avctx->debug&FF_DEBUG_VIS_QP) && pict->motion_val){
                     uint64_t c= (pict->qscale_table[mb_index]*128/31) * 0x0101010101010101ULL;
                     int y;
-                    for(y=0; y<8; y++){
-                        *(uint64_t*)(pict->data[1] + 8*mb_x + (8*mb_y + y)*pict->linesize[1])= c;
-                        *(uint64_t*)(pict->data[2] + 8*mb_x + (8*mb_y + y)*pict->linesize[2])= c;
+                    for(y=0; y<block_height; y++){
+                        *(uint64_t*)(pict->data[1] + 8*mb_x + (block_height*mb_y + y)*pict->linesize[1])= c;
+                        *(uint64_t*)(pict->data[2] + 8*mb_x + (block_height*mb_y + y)*pict->linesize[2])= c;
                     }
                 }
                 if((s->avctx->debug&FF_DEBUG_VIS_MB_TYPE) && pict->motion_val){
@@ -2016,9 +1354,9 @@ v= (int)(128 + r*sin(theta*3.141592/180));
 
                     u*= 0x0101010101010101ULL;
                     v*= 0x0101010101010101ULL;
-                    for(y=0; y<8; y++){
-                        *(uint64_t*)(pict->data[1] + 8*mb_x + (8*mb_y + y)*pict->linesize[1])= u;
-                        *(uint64_t*)(pict->data[2] + 8*mb_x + (8*mb_y + y)*pict->linesize[2])= v;
+                    for(y=0; y<block_height; y++){
+                        *(uint64_t*)(pict->data[1] + 8*mb_x + (block_height*mb_y + y)*pict->linesize[1])= u;
+                        *(uint64_t*)(pict->data[2] + 8*mb_x + (block_height*mb_y + y)*pict->linesize[2])= v;
                     }
 
                     //segmentation
@@ -2056,4560 +1394,734 @@ 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;
-
-    for(y=0; y<16; y++){
-        for(x=0; x<16; x++){
-            acc+= FFABS(src[x+y*stride] - ref);
-        }
-    }
-
-    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;
-
-    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);
-
-            acc+= sae + 500 < sad;
-        }
-    }
-    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++;
-
-        if(pts != AV_NOPTS_VALUE){
-            if(s->user_specified_pts != AV_NOPTS_VALUE){
-                int64_t time= pts;
-                int64_t last= s->user_specified_pts;
-
-                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(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;
-
-        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);
-
-        pic= (AVFrame*)&s->picture[i];
-        pic->reference= 3;
-
-        alloc_picture(s, (Picture*)pic, 0);
-
-        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;
-                    }
-                }
-            }
-        }
-    }
-    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;
-}
-
-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(score) score64= score;
-
-    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;
-}
-
-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;
-
-        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(pre_input_ptr && (!i || s->input_picture[i-1])) {
-            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;
-            }
-
-            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);
-        }
-    }
-
-    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);
-        }
-
-        rd += c->error[0] + c->error[1] + c->error[2];
-
-        if(rd < best_rd){
-            best_rd= rd;
-            best_b_count= j;
-        }
-    }
-
-    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]);
-    }
-
-    return best_b_count;
-}
-
-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]);
-                    }
-
-                    emms_c();
-                    ff_vbv_update(s, 0);
-
-                    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;
-                    }
-
-                    s->input_picture[i]->pict_type=
-                        s->rc_context.entry[pict_num].new_pict_type;
-                }
-            }
-
-            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;
-                }
-
-                b_frames= FFMAX(0, i-1);
-
-                /* 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);
-            }else{
-                av_log(s->avctx, AV_LOG_ERROR, "illegal b frame strategy\n");
-                b_frames=0;
-            }
-
-            emms_c();
-//static int b_count=0;
-//b_count+= b_frames;
-//av_log(s->avctx, AV_LOG_DEBUG, "b_frames: %d\n", b_count);
-
-            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");
-            }
-
-            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;
-              }
-            }
-
-            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++;
-            }
-        }
-    }
-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
-
-            assert(   s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_USER
-                   || s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
-
-            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);
-
-        s->picture_number= s->new_picture.display_picture_number;
-//printf("dpn:%d\n", s->picture_number);
-    }else{
-       memset(&s->new_picture, 0, sizeof(Picture));
-    }
-}
-
-int MPV_encode_picture(AVCodecContext *avctx,
-                       unsigned char *buf, int buf_size, void *data)
-{
-    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);
-
-        init_put_bits(&s->thread_context[i]->pb, start, end - start);
-    }
-
-    s->picture_in_gop_number++;
-
-    if(load_input_picture(s, pic_arg) < 0)
-        return -1;
-
-    select_input_picture(s);
-
-    /* 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;
-
-        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 (ENABLE_MJPEG_ENCODER && s->out_format == FMT_MJPEG)
-            ff_mjpeg_encode_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_stride; 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;
-            }
-
-            assert(s->avctx->rc_max_rate);
-        }
-
-        if(s->flags&CODEC_FLAG_PASS1)
-            ff_write_pass1_stats(s);
-
-        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];
-        }
-
-        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);
-
-        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;
-            }
-
-            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);
-                }
-            break;
-            default:
-                av_log(s->avctx, AV_LOG_ERROR, "vbv buffer overflow\n");
-            }
-            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);
-
-            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;
-        }
-        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;
-}
-
-#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 = av_clip(src_x, -16, s->width);
-    if (src_x == s->width)
-        motion_x =0;
-    src_y = av_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 = av_clip(src_x, -8, s->width>>1);
-    if (src_x == s->width>>1)
-        motion_x =0;
-    src_y = av_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 = av_clip(src_x, -16, width); //FIXME unneeded for emu?
-    if (src_x == width)
-        dxy &= ~1;
-    src_y = av_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 av_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((ENABLE_H261_ENCODER || ENABLE_H261_DECODER) && s->out_format == FMT_H261){
-        ff_h261_loop_filter(s);
-    }
-}
-
-/* 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(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 = av_clip(src_x, -8, s->width/2);
-    if (src_x == s->width/2)
-        dxy &= ~1;
-    src_y = av_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(ENABLE_WMV2 && 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 = av_clip(src_x, -16, s->width);
-                if (src_x == s->width)
-                    dxy &= ~3;
-                src_y = av_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 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
-
-    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) && 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 != 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 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->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 av_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]=s->skipdct;
-
-    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->qscale= s->current_picture_ptr->qscale_table[mb_xy];
-            s->dquant= s->qscale - last_qp;
-
-            if(s->out_format==FMT_H263){
-                s->dquant= av_clip(s->dquant, -2, 2);
-
-                if(s->codec_id==CODEC_ID_MPEG4){
-                    if(!s->mb_intra){
-                        if(s->pict_type == B_TYPE){
-                            if(s->dquant&1 || 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:
-        if (ENABLE_MSMPEG4_ENCODER)
-            msmpeg4_encode_mb(s, s->block, motion_x, motion_y);
-        break;
-    case CODEC_ID_WMV2:
-        if (ENABLE_WMV2_ENCODER)
-            ff_wmv2_encode_mb(s, s->block, motion_x, motion_y);
-        break;
-    case CODEC_ID_H261:
-        if (ENABLE_H261_ENCODER)
-            ff_h261_encode_mb(s, s->block, motion_x, motion_y);
-        break;
-    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:
-        if (ENABLE_MJPEG_ENCODER)
-            ff_mjpeg_encode_mb(s, s->block);
-        break;
-    default:
-        assert(0);
-    }
-}
-
-static av_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;
-    s->pp_time=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;
-
-    ff_check_alignment();
-
-    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;
-
-    ff_check_alignment();
-
-    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(ENABLE_MJPEG_ENCODER && s->out_format == FMT_MJPEG){
-        ff_mjpeg_encode_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);
-
-    ff_check_alignment();
-
-    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);
-
-            if(ENABLE_H261_ENCODER && 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];
-            }
-
-            /* 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_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) && dmin < INT_MAX){
-                    if(best_s.mv_type==MV_TYPE_16X16){ //FIXME move 4mv after QPRD
-                        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);
-                                    }
-                                }
-                            }
-                        }
-                    }
-                }
-                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];
-
-                    backup_s.dquant = 0;
-                    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_DIRECT0){
-                    backup_s.dquant = 0;
-                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
-                    s->mb_intra= 0;
-                    ff_mpeg4_set_direct_mv(s, 0, 0);
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
-                                 &dmin, &next_block, 0, 0);
-                }
-                if(!best_s.mb_intra && s->flags2&CODEC_FLAG2_SKIP_RD){
-                    int coded=0;
-                    for(i=0; i<6; i++)
-                        coded |= s->block_last_index[i];
-                    if(coded){
-                        int mx,my;
-                        memcpy(s->mv, best_s.mv, sizeof(s->mv));
-                        if(best_s.mv_dir & MV_DIRECT){
-                            mx=my=0; //FIXME find the one we actually used
-                            ff_mpeg4_set_direct_mv(s, mx, my);
-                        }else if(best_s.mv_dir&MV_DIR_BACKWARD){
-                            mx= s->mv[1][0][0];
-                            my= s->mv[1][0][1];
-                        }else{
-                            mx= s->mv[0][0][0];
-                            my= s->mv[0][0][1];
-                        }
-
-                        s->mv_dir= best_s.mv_dir;
-                        s->mv_type = best_s.mv_type;
-                        s->mb_intra= 0;
-/*                        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];*/
-                        backup_s.dquant= 0;
-                        s->skipdct=1;
-                        encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
-                                        &dmin, &next_block, mx, my);
-                        s->skipdct=0;
-                    }
-                }
-
-                s->current_picture.qscale_table[xy]= best_s.qscale;
-
-                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 = 0, motion_y = 0;
-                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];
-                    }
-                    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];
-                    }
-                    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_DIRECT0:
-                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
-                    s->mb_intra= 0;
-                    ff_mpeg4_set_direct_mv(s, 0, 0);
-                    break;
-                case CANDIDATE_MB_TYPE_BIDIR:
-                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
-                    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];
-                    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];
-                    }
-                    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];
-                    }
-                    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];
-                        }
-                    }
-                    break;
-                default:
-                    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 (ENABLE_MSMPEG4_ENCODER && s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type == I_TYPE)
-        msmpeg4_encode_ext_header(s);
-
-    write_slice_end(s);
+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;
 
-    /* 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);
+    if(s->quarter_sample){
+        motion_x/=2;
+        motion_y/=2;
     }
 
-    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]);
-        }
-    }
+    sx= motion_x & s_mask;
+    sy= motion_y & s_mask;
+    src_x += motion_x >> (lowres+1);
+    src_y += motion_y >> (lowres+1);
 
-    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);
-}
+    src += src_y * stride + src_x;
 
-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(   (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;
     }
 
-    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;
+    sx <<= 2 - lowres;
+    sy <<= 2 - lowres;
+    if(field_select)
+        src += s->linesize;
+    pix_op[lowres](dest, src, stride, h, sx, sy);
+    return emu;
 }
 
-static int encode_picture(MpegEncContext *s, int picture_number)
+/* 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)
 {
-    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
+    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->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->quarter_sample){ //FIXME obviously not perfect but qpel will not work in lowres anyway
+        motion_x/=2;
+        motion_y/=2;
     }
 
-    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);
+    if(field_based){
+        motion_y += (bottom_field - field_select)*((1<<lowres)-1);
     }
 
-    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);
+    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));
     }
 
-    ff_init_me(s);
+    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;
 
-    /* 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);
+    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(!CONFIG_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;
             }
-        }
-
-        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(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(!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));
-            }
-
-            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);
-                }
-            }
-        }
-
-        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(field_select){
+        ptr_y += s->linesize;
+        ptr_cb+= s->uvlinesize;
+        ptr_cr+= s->uvlinesize;
     }
 
-    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];
+    sx <<= 2 - lowres;
+    sy <<= 2 - lowres;
+    pix_op[lowres-1](dest_y, ptr_y, linesize, h, sx, sy);
 
-            s->intra_matrix[j] = av_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;
+    if(!CONFIG_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
+}
 
-    //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:
-        if (ENABLE_MJPEG_ENCODER)
-            ff_mjpeg_encode_picture_header(s);
-        break;
-    case FMT_H261:
-        if (ENABLE_H261_ENCODER)
-            ff_h261_encode_picture_header(s, picture_number);
-        break;
-    case FMT_H263:
-        if (ENABLE_WMV2_ENCODER && s->codec_id == CODEC_ID_WMV2)
-            ff_wmv2_encode_picture_header(s, picture_number);
-        else if (ENABLE_MSMPEG4_ENCODER && s->h263_msmpeg4)
-            msmpeg4_encode_picture_header(s, picture_number);
-        else if (s->h263_pred)
-            mpeg4_encode_picture_header(s, picture_number);
-        else if (ENABLE_RV10_ENCODER && s->codec_id == CODEC_ID_RV10)
-            rv10_encode_picture_header(s, picture_number);
-        else if (ENABLE_RV20_ENCODER && s->codec_id == CODEC_ID_RV20)
-            rv20_encode_picture_header(s, picture_number);
-        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;
+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;
 
-    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]);
+    if(s->quarter_sample){
+        mx/=2;
+        my/=2;
     }
-    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]++;
+    /* 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);
 
-    for(i=0; i<64; i++){
-        int level= block[i];
+    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(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;
+    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;
         }
     }
-}
-
-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;
-        }
+    sx <<= 2 - lowres;
+    sy <<= 2 - lowres;
+    pix_op[lowres](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
 
-        /* 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;
+    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;
     }
-    last_i= start_i;
+    pix_op[lowres](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
+}
 
-    threshold1= (1<<QMAT_SHIFT) - bias - 1;
-    threshold2= (threshold1<<1);
+/**
+ * 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;
 
-    for(i=63; i>=start_i; i--) {
-        const int j = scantable[i];
-        int level = block[j] * qmat[j];
+    mb_x = s->mb_x;
+    mb_y = s->mb_y;
 
-        if(((unsigned)(level+threshold1))>threshold2){
-            last_non_zero = i;
-            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]);
 
-    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;
+                mx += s->mv[dir][i][0];
+                my += s->mv[dir][i][1];
             }
-            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;
+        if(!CONFIG_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;
             }
 
-            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;
-                    }
-                }
+            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->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;
-                        }
-                    }
-                }
+            if(s->picture_structure == s->field_select[dir][i] + 1 || s->pict_type == FF_B_TYPE || s->first_field){
+                ref2picture= ref_picture;
             }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;
-                    }
-                }
-
-                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;
-                        }
-                    }
-                }
+                ref2picture= s->current_picture_ptr->data;
             }
-        }
 
-        score_tab[i+1]= best_score;
+            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);
 
-        //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;
+            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(; survivor_count; survivor_count--){
-                if(score_tab[ survivor[survivor_count-1] ] <= best_score + lambda)
-                    break;
-            }
-        }
+            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);
 
-        survivor[ survivor_count++ ]= i+1;
-    }
+                // after put we make avg of the same block
+                pix_op = s->dsp.avg_h264_chroma_pixels_tab;
 
-    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];
+                //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);
     }
+}
 
-    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;
+/* 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);
+}
 
-            if(score < best_score){
-                best_score= score;
-                best_level= level - 64;
-            }
-        }
-        block[0]= best_level;
-        s->coded_score[n] = best_score - dc*dc;
-        if(best_level == 0) return -1;
-        else                return last_non_zero;
+/* 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);
     }
+}
 
-    i= last_i;
-    assert(last_level);
-
-    block[ perm_scantable[last_non_zero] ]= last_level;
-    i -= last_run + 1;
+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);
 
-    for(; i>start_i; i -= run_tab[i] + 1){
-        block[ perm_scantable[i-1] ]= level_tab[i];
+        s->dsp.idct_add (dest, line_size, block);
     }
-
-    return last_non_zero;
 }
 
-//#define REFINE_STATS 1
-static int16_t basis[64][64];
+/**
+ * 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];
 
-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)));
-                }
-            }
-        }
+    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;
 }
 
-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 = 1, sum; //q is only used when s->mb_intra is true
-#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
+/* generic function called after a macroblock has been parsed by the
+   decoder or after it has been encoded by the encoder.
 
-    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;
-        }
-        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;
+   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 is_mpeg12)
+{
+    const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
+    if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration){
+        ff_xvmc_decode_mb(s);//xvmc uses pblocks
+        return;
     }
-    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[]
+    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]];
     }
-#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
-
-        weight[i] = w;
-//        w=weight[i] = (63*qns + (w/2)) / w;
+    s->current_picture.qscale_table[mb_xy]= s->qscale;
 
-        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);
-        }else{
-            run++;
+    /* update DC predictors for P macroblocks */
+    if (!s->mb_intra) {
+        if (!is_mpeg12 && (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;
         }
     }
-#ifdef REFINE_STATS
-if(last_non_zero>0){
-STOP_TIMER("init rem[]")
-}
-}
+    else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
+        s->mbintra_table[mb_xy]=1;
 
-{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 ((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;
 
-        if(analyze_gradient){
-#ifdef REFINE_STATS
-{START_TIMER
-#endif
-            for(i=0; i<64; i++){
-                int w= weight[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;
 
-                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
-        }
+            assert(age);
+
+            if (s->mb_skipped) {
+                s->mb_skipped= 0;
+                assert(s->pict_type!=FF_I_TYPE);
 
-        if(start_i){
-            const int level= block[0];
-            int change, old_coeff;
+                (*mbskip_ptr) ++; /* indicate that this time we skipped it */
+                if(*mbskip_ptr >99) *mbskip_ptr= 99;
 
-            assert(s->mb_intra);
+                /* 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 */
+            }
+        }
 
-            old_coeff= q*level;
+        dct_linesize = linesize << s->interlaced_dct;
+        dct_offset =(s->interlaced_dct)? linesize : linesize*block_size;
 
-            for(change=-1; change<=1; change+=2){
-                int new_level= level + change;
-                int score, new_coeff;
+        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;
+        }
 
-                new_coeff= q*new_level;
-                if(new_coeff >= 2048 || new_coeff < 0)
-                    continue;
+        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;
 
-                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;
+                    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==FF_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);
+                    }
                 }
             }
-        }
-
-        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 );
+            /* 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;
             }
 
-            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;
+            /* 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(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)];
-                        }
+                if(!CONFIG_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{
-                        assert(FFABS(new_level)==1);
+                        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(is_mpeg12 || (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(analyze_gradient){
-                            int g= d1[ scantable[i] ];
-                            if(g && (g^new_level) >= 0)
-                                continue;
-                        }
+                if(!CONFIG_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(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)];
-                            }
+                        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{
-                    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)];
+                }//fi gray
+            }
+            else if (CONFIG_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(!CONFIG_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{
-                        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)];
-                        }
+                        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]);
 
-                score *= lambda;
+                if(!CONFIG_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{
 
-                unquant_change= new_coeff - old_coeff;
-                assert((score < 100*lambda && score > -100*lambda) || lambda==0);
+                        dct_linesize = uvlinesize << s->interlaced_dct;
+                        dct_offset =(s->interlaced_dct)? uvlinesize : uvlinesize*8;
 
-                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++;
+                        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
             }
         }
-#ifdef REFINE_STATS
-STOP_TIMER("iterative step")}
-#endif
-
-        if(best_change){
-            int j= perm_scantable[ best_coeff ];
-
-            block[j] += best_change;
-
-            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++;
+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);
         }
-    }else{
-        from_zero++;
     }
-}else{
-    to_zero++;
 }
+
+void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]){
+#if !CONFIG_SMALL
+    if(s->out_format == FMT_MPEG1) {
+        if(s->avctx->lowres) MPV_decode_mb_internal(s, block, 1, 1);
+        else                 MPV_decode_mb_internal(s, block, 0, 1);
+    } else
 #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);
+    if(s->avctx->lowres) MPV_decode_mb_internal(s, block, 1, 0);
+    else                  MPV_decode_mb_internal(s, block, 0, 0);
 }
-#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);
+/**
+ *
+ * @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==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;
+
+        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{
-            break;
+            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);
     }
-#ifdef REFINE_STATS
-if(last_non_zero>0){
-STOP_TIMER("iterative search")
 }
-}
-#endif
 
-    return last_non_zero;
-}
+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;
 
-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;
-        }
+    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==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);
     }
-    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;
-        }
+}
+
+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))
+        free_frame_buffer(s, &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;
+    s->closed_gop= 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)
 {
@@ -6828,116 +2340,19 @@ 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},
-};
+/**
+ * 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 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},
-};
+    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 ];
+}