]> git.sesse.net Git - ffmpeg/blobdiff - postproc/swscale.c
using the new rgb2rgb converters (the LQ ones are only used if -sws 0 or -sws 4)
[ffmpeg] / postproc / swscale.c
index b52ff1ee7ffc3f56a69724363d884a82800ef4ae..bb27b4f16765a804ffbb1fce38f0c01ee9b5519e 100644 (file)
 */
 
 /*
-  supported Input formats: YV12 (grayscale soon too)
-  supported output formats: YV12, BGR15, BGR16, BGR24, BGR32 (grayscale soon too)
+  supported Input formats: YV12, I420/IYUV, YUY2, BGR32, BGR24, BGR16, BGR15, RGB32, RGB24, Y8/Y800, YVU9/IF09
+  supported output formats: YV12, I420/IYUV, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09
+  {BGR,RGB}{1,4,8,15,16} support dithering
+  
+  unscaled special converters (YV12=I420=IYUV, Y800=Y8)
+  YV12 -> {BGR,RGB}{1,4,8,15,16,24,32}
+  x -> x
+  YUV9 -> YV12
+  YUV9/YV12 -> Y800
+  Y800 -> YUV9/YV12
+  BGR24 -> BGR32 & RGB24 -> RGB32
+  BGR32 -> BGR24 & RGB32 -> RGB24
+  BGR15 -> BGR16
+*/
+
+/* 
+tested special converters (most are tested actually but i didnt write it down ...)
+ YV12 -> BGR16
+ YV12 -> YV12
+ BGR15 -> BGR16
+ BGR16 -> BGR16
+ YVU9 -> YV12
+
+untested special converters
+  YV12/I420 -> BGR15/BGR24/BGR32 (its the yuv2rgb stuff, so it should be ok)
+  YV12/I420 -> YV12/I420
+  YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format
+  BGR24 -> BGR32 & RGB24 -> RGB32
+  BGR32 -> BGR24 & RGB32 -> RGB24
+  BGR24 -> YV12
 */
 
 #include <inttypes.h>
 #include <stdio.h>
 #include "../config.h"
 #include "../mangle.h"
+#include <assert.h>
 #ifdef HAVE_MALLOC_H
 #include <malloc.h>
+#else
+#include <stdlib.h>
 #endif
 #include "swscale.h"
 #include "../cpudetect.h"
+#include "../bswap.h"
 #include "../libvo/img_format.h"
+#include "rgb2rgb.h"
+#include "../libvo/fastmemcpy.h"
+#include "../mp_msg.h"
+
+#define MSG_WARN(args...) mp_msg(MSGT_SWS,MSGL_WARN, ##args )
+#define MSG_FATAL(args...) mp_msg(MSGT_SWS,MSGL_FATAL, ##args )
+#define MSG_ERR(args...) mp_msg(MSGT_SWS,MSGL_ERR, ##args )
+#define MSG_V(args...) mp_msg(MSGT_SWS,MSGL_V, ##args )
+#define MSG_DBG2(args...) mp_msg(MSGT_SWS,MSGL_DBG2, ##args )
+#define MSG_INFO(args...) mp_msg(MSGT_SWS,MSGL_INFO, ##args )
+
 #undef MOVNTQ
 #undef PAVGB
 
 //#define HAVE_3DNOW
 //#undef HAVE_MMX
 //#undef ARCH_X86
+//#define WORDS_BIGENDIAN
 #define DITHER1XBPP
 
-#define RET 0xC3 //near return opcode
+#define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
+
+#define RET 0xC3 //near return opcode for X86
 
 #ifdef MP_DEBUG
-#define ASSERT(x) if(!(x)) { printf("ASSERT " #x " failed\n"); *((int*)0)=0; }
+#define ASSERT(x) assert(x);
 #else
 #define ASSERT(x) ;
 #endif
 #define PI 3.14159265358979323846
 #endif
 
+//FIXME replace this with something faster
+#define isPlanarYUV(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420 || (x)==IMGFMT_YVU9)
+#define isYUV(x)       ((x)==IMGFMT_YUY2 || isPlanarYUV(x))
+#define isGray(x)      ((x)==IMGFMT_Y800)
+#define isRGB(x)       (((x)&IMGFMT_RGB_MASK)==IMGFMT_RGB)
+#define isBGR(x)       (((x)&IMGFMT_BGR_MASK)==IMGFMT_BGR)
+#define isSupportedIn(x)  ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420 || (x)==IMGFMT_YUY2 \
+                       || (x)==IMGFMT_BGR32|| (x)==IMGFMT_BGR24|| (x)==IMGFMT_BGR16|| (x)==IMGFMT_BGR15\
+                       || (x)==IMGFMT_RGB32|| (x)==IMGFMT_RGB24\
+                       || (x)==IMGFMT_Y800 || (x)==IMGFMT_YVU9)
+#define isSupportedOut(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420 \
+                       || isRGB(x) || isBGR(x)\
+                       || (x)==IMGFMT_Y800 || (x)==IMGFMT_YVU9)
+#define isPacked(x)    ((x)==IMGFMT_YUY2 || isRGB(x) || isBGR(x))
+
+#define RGB2YUV_SHIFT 16
+#define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
+#define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
+#define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
+#define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
+#define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
+#define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
+#define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
+#define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
+#define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
+
 extern int verbose; // defined in mplayer.c
 /*
 NOTES
-
-known BUGS with known cause (no bugreports please!, but patches are welcome :) )
-horizontal fast_bilinear MMX2 scaler reads 1-7 samples too much (might cause a sig11)
-
-Supported output formats BGR15 BGR16 BGR24 BGR32 YV12
-BGR15 & BGR16 MMX verions support dithering
 Special versions: fast Y 1:1 scaling (no interpolation in y direction)
 
 TODO
 more intelligent missalignment avoidance for the horizontal scaler
-dither in C
-change the distance of the u & v buffer
 write special vertical cubic upscale version
 Optimize C code (yv12 / minmax)
+add support for packed pixel yuv input & output
+add support for Y8 output
+optimize bgr24 & bgr32
+add BGR4 output support
+write special BGR->BGR scaler
+deglobalize yuv2rgb*.c
 */
 
 #define ABS(a) ((a) > 0 ? (a) : (-(a)))
@@ -98,6 +168,7 @@ static uint64_t __attribute__((aligned(8))) w02=       0x0002000200020002LL;
 static uint64_t __attribute__((aligned(8))) bm00001111=0x00000000FFFFFFFFLL;
 static uint64_t __attribute__((aligned(8))) bm00000111=0x0000000000FFFFFFLL;
 static uint64_t __attribute__((aligned(8))) bm11111000=0xFFFFFFFFFF000000LL;
+static uint64_t __attribute__((aligned(8))) bm01010101=0x00FF00FF00FF00FFLL;
 
 static volatile uint64_t __attribute__((aligned(8))) b5Dither;
 static volatile uint64_t __attribute__((aligned(8))) g5Dither;
@@ -123,36 +194,25 @@ static uint64_t __attribute__((aligned(8))) M24A=   0x00FF0000FF0000FFLL;
 static uint64_t __attribute__((aligned(8))) M24B=   0xFF0000FF0000FF00LL;
 static uint64_t __attribute__((aligned(8))) M24C=   0x0000FF0000FF0000LL;
 
-// FIXME remove
-static uint64_t __attribute__((aligned(8))) asm_yalpha1;
-static uint64_t __attribute__((aligned(8))) asm_uvalpha1;
+#ifdef FAST_BGR2YV12
+static const uint64_t bgr2YCoeff  __attribute__((aligned(8))) = 0x000000210041000DULL;
+static const uint64_t bgr2UCoeff  __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
+static const uint64_t bgr2VCoeff  __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
+#else
+static const uint64_t bgr2YCoeff  __attribute__((aligned(8))) = 0x000020E540830C8BULL;
+static const uint64_t bgr2UCoeff  __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
+static const uint64_t bgr2VCoeff  __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
+#endif
+static const uint64_t bgr2YOffset __attribute__((aligned(8))) = 0x1010101010101010ULL;
+static const uint64_t bgr2UVOffset __attribute__((aligned(8)))= 0x8080808080808080ULL;
+static const uint64_t w1111       __attribute__((aligned(8))) = 0x0001000100010001ULL;
 #endif
 
 // clipping helper table for C implementations:
 static unsigned char clip_table[768];
 
-static unsigned short clip_table16b[768];
-static unsigned short clip_table16g[768];
-static unsigned short clip_table16r[768];
-static unsigned short clip_table15b[768];
-static unsigned short clip_table15g[768];
-static unsigned short clip_table15r[768];
-
-// yuv->rgb conversion tables:
-static    int yuvtab_2568[256];
-static    int yuvtab_3343[256];
-static    int yuvtab_0c92[256];
-static    int yuvtab_1a1e[256];
-static    int yuvtab_40cf[256];
-// Needed for cubic scaler to catch overflows
-static    int clip_yuvtab_2568[768];
-static    int clip_yuvtab_3343[768];
-static    int clip_yuvtab_0c92[768];
-static    int clip_yuvtab_1a1e[768];
-static    int clip_yuvtab_40cf[768];
-
 //global sws_flags from the command line
-int sws_flags=0;
+int sws_flags=2;
 
 //global srcFilter
 SwsFilter src_filter= {NULL, NULL, NULL, NULL};
@@ -161,6 +221,8 @@ float sws_lum_gblur= 0.0;
 float sws_chr_gblur= 0.0;
 int sws_chr_vshift= 0;
 int sws_chr_hshift= 0;
+float sws_chr_sharpen= 0.0;
+float sws_lum_sharpen= 0.0;
 
 /* cpuCaps combined from cpudetect and whats actually compiled in
    (if there is no support for something compiled in it wont appear here) */
@@ -170,20 +232,161 @@ void (*swScale)(SwsContext *context, uint8_t* src[], int srcStride[], int srcSli
              int srcSliceH, uint8_t* dst[], int dstStride[])=NULL;
 
 static SwsVector *getConvVec(SwsVector *a, SwsVector *b);
+static inline void orderYUV(int format, uint8_t * sortedP[], int sortedStride[], uint8_t * p[], int stride[]);
+void *yuv2rgb_c_init (unsigned bpp, int mode, void *table_rV[256], void *table_gU[256], int table_gV[256], void *table_bU[256]);
+
+extern const uint8_t dither_2x2_4[2][8];
+extern const uint8_t dither_2x2_8[2][8];
+extern const uint8_t dither_8x8_32[8][8];
+extern const uint8_t dither_8x8_73[8][8];
+extern const uint8_t dither_8x8_220[8][8];
 
 #ifdef CAN_COMPILE_X86_ASM
 void in_asm_used_var_warning_killer()
 {
  volatile int i= yCoeff+vrCoeff+ubCoeff+vgCoeff+ugCoeff+bF8+bFC+w400+w80+w10+
- bm00001111+bm00000111+bm11111000+b16Mask+g16Mask+r16Mask+b15Mask+g15Mask+r15Mask+asm_yalpha1+ asm_uvalpha1+
- M24A+M24B+M24C+w02 + b5Dither+g5Dither+r5Dither+g6Dither+dither4[0]+dither8[0];
+ bm00001111+bm00000111+bm11111000+b16Mask+g16Mask+r16Mask+b15Mask+g15Mask+r15Mask+
+ M24A+M24B+M24C+w02 + b5Dither+g5Dither+r5Dither+g6Dither+dither4[0]+dither8[0]+bm01010101;
  if(i) i=0;
 }
 #endif
 
+static int testFormat[]={
+IMGFMT_YVU9,
+IMGFMT_YV12,
+//IMGFMT_IYUV,
+IMGFMT_I420,
+IMGFMT_BGR15,
+IMGFMT_BGR16,
+IMGFMT_BGR24,
+IMGFMT_BGR32,
+IMGFMT_RGB24,
+IMGFMT_RGB32,
+//IMGFMT_Y8,
+IMGFMT_Y800,
+//IMGFMT_YUY2,
+0
+};
+
+static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h){
+       int x,y;
+       uint64_t ssd=0;
+
+       for(y=0; y<h; y++){
+               for(x=0; x<w; x++){
+                       int d= src1[x + y*stride1] - src2[x + y*stride2];
+                       ssd+= d*d;
+               }
+       }
+       return ssd;
+}
+
+// test by ref -> src -> dst -> out & compare out against ref
+// ref & out are YV12
+static void doTest(uint8_t *ref[3], int refStride[3], int w, int h, int srcFormat, int dstFormat, 
+                   int srcW, int srcH, int dstW, int dstH, int flags){
+       uint8_t *src[3];
+       uint8_t *dst[3];
+       uint8_t *out[3];
+       int srcStride[3], dstStride[3];
+       int i;
+       uint64_t ssdY, ssdU, ssdV;
+       SwsContext *srcContext, *dstContext, *outContext;
+       
+       for(i=0; i<3; i++){
+               // avoid stride % bpp != 0
+               if(srcFormat==IMGFMT_RGB24 || srcFormat==IMGFMT_BGR24)
+                       srcStride[i]= srcW*3;
+               else
+                       srcStride[i]= srcW*4;
+               
+               if(dstFormat==IMGFMT_RGB24 || dstFormat==IMGFMT_BGR24)
+                       dstStride[i]= dstW*3;
+               else
+                       dstStride[i]= dstW*4;
+       
+               src[i]= malloc(srcStride[i]*srcH);
+               dst[i]= malloc(dstStride[i]*dstH);
+               out[i]= malloc(refStride[i]*h);
+       }
+
+       srcContext= getSwsContext(w, h, IMGFMT_YV12, srcW, srcH, srcFormat, flags, NULL, NULL);
+       dstContext= getSwsContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL);
+       outContext= getSwsContext(dstW, dstH, dstFormat, w, h, IMGFMT_YV12, flags, NULL, NULL);
+       if(srcContext==NULL ||dstContext==NULL ||outContext==NULL){
+               printf("Failed allocating swsContext\n");
+               goto end;
+       }
+//     printf("test %X %X %X -> %X %X %X\n", (int)ref[0], (int)ref[1], (int)ref[2],
+//             (int)src[0], (int)src[1], (int)src[2]);
+
+       srcContext->swScale(srcContext, ref, refStride, 0, h   , src, srcStride);
+       dstContext->swScale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
+       outContext->swScale(outContext, dst, dstStride, 0, dstH, out, refStride);
+            
+       ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
+       ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
+       ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
+       
+       if(isGray(srcFormat) || isGray(dstFormat)) ssdU=ssdV=0; //FIXME check that output is really gray
+       
+       ssdY/= w*h;
+       ssdU/= w*h/4;
+       ssdV/= w*h/4;
+       
+       if(ssdY>100 || ssdU>50 || ssdV>50){
+               printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5lld,%5lld,%5lld\n", 
+                       vo_format_name(srcFormat), srcW, srcH, 
+                       vo_format_name(dstFormat), dstW, dstH,
+                       flags,
+                       ssdY, ssdU, ssdV);
+       }
+
+       end:
+       
+       freeSwsContext(srcContext);
+       freeSwsContext(dstContext);
+       freeSwsContext(outContext);
+
+       for(i=0; i<3; i++){
+               free(src[i]);
+               free(dst[i]);
+               free(out[i]);
+       }
+}
+
+static void selfTest(uint8_t *src[3], int stride[3], int w, int h){
+       int srcFormat, dstFormat, srcFormatIndex, dstFormatIndex;
+       int srcW, srcH, dstW, dstH;
+       int flags;
+
+       for(srcFormatIndex=0; ;srcFormatIndex++){
+               srcFormat= testFormat[srcFormatIndex];
+               if(!srcFormat) break;
+               for(dstFormatIndex=0; ;dstFormatIndex++){
+                       dstFormat= testFormat[dstFormatIndex];
+                       if(!dstFormat) break;
+                       if(!isSupportedOut(dstFormat)) continue;
+printf("%s -> %s\n", 
+       vo_format_name(srcFormat),
+       vo_format_name(dstFormat));
+
+                       srcW= w+w/3;
+                       srcH= h+h/3;
+                       for(dstW=w; dstW<w*2; dstW+= dstW/3){
+                               for(dstH=h; dstH<h*2; dstH+= dstH/3){
+                                       for(flags=1; flags<33; flags*=2)
+                                               doTest(src, stride, w, h, srcFormat, dstFormat,
+                                                       srcW, srcH, dstW, dstH, flags);
+                               }
+                       }
+               }
+       }
+}
+
 static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
                                    int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
-                                   uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW)
+                                   uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)
 {
        //FIXME Optimize (just quickly writen not opti..)
        int i;
@@ -198,7 +401,7 @@ static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilt
        }
 
        if(uDest != NULL)
-               for(i=0; i<(dstW>>1); i++)
+               for(i=0; i<chrDstW; i++)
                {
                        int u=0;
                        int v=0;
@@ -214,166 +417,355 @@ static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilt
                }
 }
 
-static inline void yuv2rgbXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
+#define YSCALE_YUV_2_RGBX_C(type) \
+               for(i=0; i<(dstW>>1); i++){\
+                       int j;\
+                       int Y1=0;\
+                       int Y2=0;\
+                       int U=0;\
+                       int V=0;\
+                       type *r, *b, *g;\
+                       const int i2= 2*i;\
+                       \
+                       for(j=0; j<lumFilterSize; j++)\
+                       {\
+                               Y1 += lumSrc[j][i2] * lumFilter[j];\
+                               Y2 += lumSrc[j][i2+1] * lumFilter[j];\
+                       }\
+                       for(j=0; j<chrFilterSize; j++)\
+                       {\
+                               U += chrSrc[j][i] * chrFilter[j];\
+                               V += chrSrc[j][i+2048] * chrFilter[j];\
+                       }\
+                       Y1>>=19;\
+                       Y2>>=19;\
+                       U >>=19;\
+                       V >>=19;\
+                       if((Y1|Y2|U|V)&256)\
+                       {\
+                               if(Y1>255)   Y1=255;\
+                               else if(Y1<0)Y1=0;\
+                               if(Y2>255)   Y2=255;\
+                               else if(Y2<0)Y2=0;\
+                               if(U>255)    U=255;\
+                               else if(U<0) U=0;\
+                               if(V>255)    V=255;\
+                               else if(V<0) V=0;\
+                       }\
+                       r = c->table_rV[V];\
+                       g = c->table_gU[U] + c->table_gV[V];\
+                       b = c->table_bU[U];\
+
+#define YSCALE_YUV_2_RGB2_C(type) \
+               for(i=0; i<(dstW>>1); i++){\
+                       const int i2= 2*i;\
+                       int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>19;\
+                       int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19;\
+                       int U= (uvbuf0[i     ]*uvalpha1+uvbuf1[i     ]*uvalpha)>>19;\
+                       int V= (uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19;\
+                       type *r, *b, *g;\
+                       r = c->table_rV[V];\
+                       g = c->table_gU[U] + c->table_gV[V];\
+                       b = c->table_bU[U];\
+
+#define YSCALE_YUV_2_RGB1_C(type) \
+               for(i=0; i<(dstW>>1); i++){\
+                       const int i2= 2*i;\
+                       int Y1= buf0[i2  ]>>7;\
+                       int Y2= buf0[i2+1]>>7;\
+                       int U= (uvbuf1[i     ])>>7;\
+                       int V= (uvbuf1[i+2048])>>7;\
+                       type *r, *b, *g;\
+                       r = c->table_rV[V];\
+                       g = c->table_gU[U] + c->table_gV[V];\
+                       b = c->table_bU[U];\
+
+#define YSCALE_YUV_2_RGB1B_C(type) \
+               for(i=0; i<(dstW>>1); i++){\
+                       const int i2= 2*i;\
+                       int Y1= buf0[i2  ]>>7;\
+                       int Y2= buf0[i2+1]>>7;\
+                       int U= (uvbuf0[i     ] + uvbuf1[i     ])>>8;\
+                       int V= (uvbuf0[i+2048] + uvbuf1[i+2048])>>8;\
+                       type *r, *b, *g;\
+                       r = c->table_rV[V];\
+                       g = c->table_gU[U] + c->table_gV[V];\
+                       b = c->table_bU[U];\
+
+#define YSCALE_YUV_2_ANYRGB_C(func)\
+       switch(c->dstFormat)\
+       {\
+       case IMGFMT_BGR32:\
+       case IMGFMT_RGB32:\
+               func(uint32_t)\
+                       ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
+                       ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
+               }               \
+               break;\
+       case IMGFMT_RGB24:\
+               func(uint8_t)\
+                       ((uint8_t*)dest)[0]= r[Y1];\
+                       ((uint8_t*)dest)[1]= g[Y1];\
+                       ((uint8_t*)dest)[2]= b[Y1];\
+                       ((uint8_t*)dest)[3]= r[Y2];\
+                       ((uint8_t*)dest)[4]= g[Y2];\
+                       ((uint8_t*)dest)[5]= b[Y2];\
+                       ((uint8_t*)dest)+=6;\
+               }\
+               break;\
+       case IMGFMT_BGR24:\
+               func(uint8_t)\
+                       ((uint8_t*)dest)[0]= b[Y1];\
+                       ((uint8_t*)dest)[1]= g[Y1];\
+                       ((uint8_t*)dest)[2]= r[Y1];\
+                       ((uint8_t*)dest)[3]= b[Y2];\
+                       ((uint8_t*)dest)[4]= g[Y2];\
+                       ((uint8_t*)dest)[5]= r[Y2];\
+                       ((uint8_t*)dest)+=6;\
+               }\
+               break;\
+       case IMGFMT_RGB16:\
+       case IMGFMT_BGR16:\
+               {\
+                       const int dr1= dither_2x2_8[y&1    ][0];\
+                       const int dg1= dither_2x2_4[y&1    ][0];\
+                       const int db1= dither_2x2_8[(y&1)^1][0];\
+                       const int dr2= dither_2x2_8[y&1    ][1];\
+                       const int dg2= dither_2x2_4[y&1    ][1];\
+                       const int db2= dither_2x2_8[(y&1)^1][1];\
+                       func(uint16_t)\
+                               ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
+                               ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
+                       }\
+               }\
+               break;\
+       case IMGFMT_RGB15:\
+       case IMGFMT_BGR15:\
+               {\
+                       const int dr1= dither_2x2_8[y&1    ][0];\
+                       const int dg1= dither_2x2_8[y&1    ][1];\
+                       const int db1= dither_2x2_8[(y&1)^1][0];\
+                       const int dr2= dither_2x2_8[y&1    ][1];\
+                       const int dg2= dither_2x2_8[y&1    ][0];\
+                       const int db2= dither_2x2_8[(y&1)^1][1];\
+                       func(uint16_t)\
+                               ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
+                               ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
+                       }\
+               }\
+               break;\
+       case IMGFMT_RGB8:\
+       case IMGFMT_BGR8:\
+               {\
+                       const uint8_t * const d64= dither_8x8_73[y&7];\
+                       const uint8_t * const d32= dither_8x8_32[y&7];\
+                       func(uint8_t)\
+                               ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
+                               ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
+                       }\
+               }\
+               break;\
+       case IMGFMT_RGB4:\
+       case IMGFMT_BGR4:\
+               {\
+                       const uint8_t * const d64= dither_8x8_73 [y&7];\
+                       const uint8_t * const d128=dither_8x8_220[y&7];\
+                       func(uint8_t)\
+                               ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
+                               ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
+                       }\
+               }\
+               break;\
+       case IMGFMT_RGB1:\
+       case IMGFMT_BGR1:\
+               {\
+                       const uint8_t * const d128=dither_8x8_220[y&7];\
+                       uint8_t *g= c->table_gU[128] + c->table_gV[128];\
+                       for(i=0; i<dstW-7; i+=8){\
+                               int acc;\
+                               acc =       g[((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19) + d128[0]];\
+                               acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
+                               acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
+                               acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
+                               acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
+                               acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
+                               acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
+                               acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
+                               ((uint8_t*)dest)[0]= acc;\
+                               ((uint8_t*)dest)++;\
+                       }\
+\
+/*\
+((uint8_t*)dest)-= dstW>>4;\
+{\
+                       int acc=0;\
+                       int left=0;\
+                       static int top[1024];\
+                       static int last_new[1024][1024];\
+                       static int last_in3[1024][1024];\
+                       static int drift[1024][1024];\
+                       int topLeft=0;\
+                       int shift=0;\
+                       int count=0;\
+                       const uint8_t * const d128=dither_8x8_220[y&7];\
+                       int error_new=0;\
+                       int error_in3=0;\
+                       int f=0;\
+                       \
+                       for(i=dstW>>1; i<dstW; i++){\
+                               int in= ((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19);\
+                               int in2 = (76309 * (in - 16) + 32768) >> 16;\
+                               int in3 = (in2 < 0) ? 0 : ((in2 > 255) ? 255 : in2);\
+                               int old= (left*7 + topLeft + top[i]*5 + top[i+1]*3)/20 + in3\
+                                       + (last_new[y][i] - in3)*f/256;\
+                               int new= old> 128 ? 255 : 0;\
+\
+                               error_new+= ABS(last_new[y][i] - new);\
+                               error_in3+= ABS(last_in3[y][i] - in3);\
+                               f= error_new - error_in3*4;\
+                               if(f<0) f=0;\
+                               if(f>256) f=256;\
+\
+                               topLeft= top[i];\
+                               left= top[i]= old - new;\
+                               last_new[y][i]= new;\
+                               last_in3[y][i]= in3;\
+\
+                               acc+= acc + (new&1);\
+                               if((i&7)==6){\
+                                       ((uint8_t*)dest)[0]= acc;\
+                                       ((uint8_t*)dest)++;\
+                               }\
+                       }\
+}\
+*/\
+               }\
+               break;\
+       }\
+
+
+static inline void yuv2rgbXinC(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
                                    int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
-                                   uint8_t *dest, int dstW, int dstFormat)
+                                   uint8_t *dest, int dstW, int y)
 {
-       if(dstFormat==IMGFMT_BGR32)
+       int i;
+       switch(c->dstFormat)
        {
-               int i;
-               for(i=0; i<(dstW>>1); i++){
-                       int j;
-                       int Y1=0;
-                       int Y2=0;
-                       int U=0;
-                       int V=0;
-                       int Cb, Cr, Cg;
-                       for(j=0; j<lumFilterSize; j++)
-                       {
-                               Y1 += lumSrc[j][2*i] * lumFilter[j];
-                               Y2 += lumSrc[j][2*i+1] * lumFilter[j];
-                       }
-                       for(j=0; j<chrFilterSize; j++)
-                       {
-                               U += chrSrc[j][i] * chrFilter[j];
-                               V += chrSrc[j][i+2048] * chrFilter[j];
-                       }
-                       Y1= clip_yuvtab_2568[ (Y1>>19) + 256 ];
-                       Y2= clip_yuvtab_2568[ (Y2>>19) + 256 ];
-                       U >>= 19;
-                       V >>= 19;
-
-                       Cb= clip_yuvtab_40cf[U+ 256];
-                       Cg= clip_yuvtab_1a1e[V+ 256] + yuvtab_0c92[U+ 256];
-                       Cr= clip_yuvtab_3343[V+ 256];
-
-                       dest[8*i+0]=clip_table[((Y1 + Cb) >>13)];
-                       dest[8*i+1]=clip_table[((Y1 + Cg) >>13)];
-                       dest[8*i+2]=clip_table[((Y1 + Cr) >>13)];
-
-                       dest[8*i+4]=clip_table[((Y2 + Cb) >>13)];
-                       dest[8*i+5]=clip_table[((Y2 + Cg) >>13)];
-                       dest[8*i+6]=clip_table[((Y2 + Cr) >>13)];
+       case IMGFMT_RGB32:
+       case IMGFMT_BGR32:
+               YSCALE_YUV_2_RGBX_C(uint32_t)
+                       ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];
+                       ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];
                }
-       }
-       else if(dstFormat==IMGFMT_BGR24)
-       {
-               int i;
-               for(i=0; i<(dstW>>1); i++){
-                       int j;
-                       int Y1=0;
-                       int Y2=0;
-                       int U=0;
-                       int V=0;
-                       int Cb, Cr, Cg;
-                       for(j=0; j<lumFilterSize; j++)
-                       {
-                               Y1 += lumSrc[j][2*i] * lumFilter[j];
-                               Y2 += lumSrc[j][2*i+1] * lumFilter[j];
-                       }
-                       for(j=0; j<chrFilterSize; j++)
-                       {
-                               U += chrSrc[j][i] * chrFilter[j];
-                               V += chrSrc[j][i+2048] * chrFilter[j];
+               break;
+       case IMGFMT_RGB24:
+               YSCALE_YUV_2_RGBX_C(uint8_t)
+                       ((uint8_t*)dest)[0]= r[Y1];
+                       ((uint8_t*)dest)[1]= g[Y1];
+                       ((uint8_t*)dest)[2]= b[Y1];
+                       ((uint8_t*)dest)[3]= r[Y2];
+                       ((uint8_t*)dest)[4]= g[Y2];
+                       ((uint8_t*)dest)[5]= b[Y2];
+                       ((uint8_t*)dest)+=6;
+               }
+               break;
+       case IMGFMT_BGR24:
+               YSCALE_YUV_2_RGBX_C(uint8_t)
+                       ((uint8_t*)dest)[0]= b[Y1];
+                       ((uint8_t*)dest)[1]= g[Y1];
+                       ((uint8_t*)dest)[2]= r[Y1];
+                       ((uint8_t*)dest)[3]= b[Y2];
+                       ((uint8_t*)dest)[4]= g[Y2];
+                       ((uint8_t*)dest)[5]= r[Y2];
+                       ((uint8_t*)dest)+=6;
+               }
+               break;
+       case IMGFMT_RGB16:
+       case IMGFMT_BGR16:
+               {
+                       const int dr1= dither_2x2_8[y&1    ][0];
+                       const int dg1= dither_2x2_4[y&1    ][0];
+                       const int db1= dither_2x2_8[(y&1)^1][0];
+                       const int dr2= dither_2x2_8[y&1    ][1];
+                       const int dg2= dither_2x2_4[y&1    ][1];
+                       const int db2= dither_2x2_8[(y&1)^1][1];
+                       YSCALE_YUV_2_RGBX_C(uint16_t)
+                               ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
+                               ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
                        }
-                       Y1= clip_yuvtab_2568[ (Y1>>19) + 256 ];
-                       Y2= clip_yuvtab_2568[ (Y2>>19) + 256 ];
-                       U >>= 19;
-                       V >>= 19;
-
-                       Cb= clip_yuvtab_40cf[U+ 256];
-                       Cg= clip_yuvtab_1a1e[V+ 256] + yuvtab_0c92[U+ 256];
-                       Cr= clip_yuvtab_3343[V+ 256];
-
-                       dest[0]=clip_table[((Y1 + Cb) >>13)];
-                       dest[1]=clip_table[((Y1 + Cg) >>13)];
-                       dest[2]=clip_table[((Y1 + Cr) >>13)];
-
-                       dest[3]=clip_table[((Y2 + Cb) >>13)];
-                       dest[4]=clip_table[((Y2 + Cg) >>13)];
-                       dest[5]=clip_table[((Y2 + Cr) >>13)];
-                       dest+=6;
                }
-       }
-       else if(dstFormat==IMGFMT_BGR16)
-       {
-               int i;
-               for(i=0; i<(dstW>>1); i++){
-                       int j;
-                       int Y1=0;
-                       int Y2=0;
-                       int U=0;
-                       int V=0;
-                       int Cb, Cr, Cg;
-                       for(j=0; j<lumFilterSize; j++)
-                       {
-                               Y1 += lumSrc[j][2*i] * lumFilter[j];
-                               Y2 += lumSrc[j][2*i+1] * lumFilter[j];
+               break;
+       case IMGFMT_RGB15:
+       case IMGFMT_BGR15:
+               {
+                       const int dr1= dither_2x2_8[y&1    ][0];
+                       const int dg1= dither_2x2_8[y&1    ][1];
+                       const int db1= dither_2x2_8[(y&1)^1][0];
+                       const int dr2= dither_2x2_8[y&1    ][1];
+                       const int dg2= dither_2x2_8[y&1    ][0];
+                       const int db2= dither_2x2_8[(y&1)^1][1];
+                       YSCALE_YUV_2_RGBX_C(uint16_t)
+                               ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
+                               ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
                        }
-                       for(j=0; j<chrFilterSize; j++)
-                       {
-                               U += chrSrc[j][i] * chrFilter[j];
-                               V += chrSrc[j][i+2048] * chrFilter[j];
+               }
+               break;
+       case IMGFMT_RGB8:
+       case IMGFMT_BGR8:
+               {
+                       const uint8_t * const d64= dither_8x8_73[y&7];
+                       const uint8_t * const d32= dither_8x8_32[y&7];
+                       YSCALE_YUV_2_RGBX_C(uint8_t)
+                               ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];
+                               ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];
                        }
-                       Y1= clip_yuvtab_2568[ (Y1>>19) + 256 ];
-                       Y2= clip_yuvtab_2568[ (Y2>>19) + 256 ];
-                       U >>= 19;
-                       V >>= 19;
-
-                       Cb= clip_yuvtab_40cf[U+ 256];
-                       Cg= clip_yuvtab_1a1e[V+ 256] + yuvtab_0c92[U+ 256];
-                       Cr= clip_yuvtab_3343[V+ 256];
-
-                       ((uint16_t*)dest)[2*i] =
-                               clip_table16b[(Y1 + Cb) >>13] |
-                               clip_table16g[(Y1 + Cg) >>13] |
-                               clip_table16r[(Y1 + Cr) >>13];
-
-                       ((uint16_t*)dest)[2*i+1] =
-                               clip_table16b[(Y2 + Cb) >>13] |
-                               clip_table16g[(Y2 + Cg) >>13] |
-                               clip_table16r[(Y2 + Cr) >>13];
                }
-       }
-       else if(dstFormat==IMGFMT_BGR15)
-       {
-               int i;
-               for(i=0; i<(dstW>>1); i++){
-                       int j;
-                       int Y1=0;
-                       int Y2=0;
-                       int U=0;
-                       int V=0;
-                       int Cb, Cr, Cg;
-                       for(j=0; j<lumFilterSize; j++)
-                       {
-                               Y1 += lumSrc[j][2*i] * lumFilter[j];
-                               Y2 += lumSrc[j][2*i+1] * lumFilter[j];
+               break;
+       case IMGFMT_RGB4:
+       case IMGFMT_BGR4:
+               {
+                       const uint8_t * const d64= dither_8x8_73 [y&7];
+                       const uint8_t * const d128=dither_8x8_220[y&7];
+                       YSCALE_YUV_2_RGBX_C(uint8_t)
+                               ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];
+                               ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];
                        }
-                       for(j=0; j<chrFilterSize; j++)
-                       {
-                               U += chrSrc[j][i] * chrFilter[j];
-                               V += chrSrc[j][i+2048] * chrFilter[j];
+               }
+               break;
+       case IMGFMT_RGB1:
+       case IMGFMT_BGR1:
+               {
+                       const uint8_t * const d128=dither_8x8_220[y&7];
+                       uint8_t *g= c->table_gU[128] + c->table_gV[128];
+                       int acc=0;
+                       for(i=0; i<dstW-1; i+=2){
+                               int j;
+                               int Y1=0;
+                               int Y2=0;
+
+                               for(j=0; j<lumFilterSize; j++)
+                               {
+                                       Y1 += lumSrc[j][i] * lumFilter[j];
+                                       Y2 += lumSrc[j][i+1] * lumFilter[j];
+                               }
+                               Y1>>=19;
+                               Y2>>=19;
+                               if((Y1|Y2)&256)
+                               {
+                                       if(Y1>255)   Y1=255;
+                                       else if(Y1<0)Y1=0;
+                                       if(Y2>255)   Y2=255;
+                                       else if(Y2<0)Y2=0;
+                               }
+                               acc+= acc + g[Y1+d128[(i+0)&7]];
+                               acc+= acc + g[Y2+d128[(i+1)&7]];
+                               if((i&7)==6){
+                                       ((uint8_t*)dest)[0]= acc;
+                                       ((uint8_t*)dest)++;
+                               }
                        }
-                       Y1= clip_yuvtab_2568[ (Y1>>19) + 256 ];
-                       Y2= clip_yuvtab_2568[ (Y2>>19) + 256 ];
-                       U >>= 19;
-                       V >>= 19;
-
-                       Cb= clip_yuvtab_40cf[U+ 256];
-                       Cg= clip_yuvtab_1a1e[V+ 256] + yuvtab_0c92[U+ 256];
-                       Cr= clip_yuvtab_3343[V+ 256];
-
-                       ((uint16_t*)dest)[2*i] =
-                               clip_table15b[(Y1 + Cb) >>13] |
-                               clip_table15g[(Y1 + Cg) >>13] |
-                               clip_table15r[(Y1 + Cr) >>13];
-
-                       ((uint16_t*)dest)[2*i+1] =
-                               clip_table15b[(Y2 + Cb) >>13] |
-                               clip_table15g[(Y2 + Cg) >>13] |
-                               clip_table15r[(Y2 + Cr) >>13];
                }
+               break;
        }
 }
 
@@ -402,13 +794,11 @@ static inline void yuv2rgbXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilt
 #undef HAVE_MMX
 #undef HAVE_MMX2
 #undef HAVE_3DNOW
-#undef ARCH_X86
 
 #ifdef COMPILE_C
 #undef HAVE_MMX
 #undef HAVE_MMX2
 #undef HAVE_3DNOW
-#undef ARCH_X86
 #define RENAME(a) a ## _C
 #include "swscale_template.c"
 #endif
@@ -431,7 +821,6 @@ static inline void yuv2rgbXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilt
 #define HAVE_MMX
 #undef HAVE_MMX2
 #undef HAVE_3DNOW
-#define ARCH_X86
 #define RENAME(a) a ## _MMX
 #include "swscale_template.c"
 #endif
@@ -442,7 +831,6 @@ static inline void yuv2rgbXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilt
 #define HAVE_MMX
 #define HAVE_MMX2
 #undef HAVE_3DNOW
-#define ARCH_X86
 #define RENAME(a) a ## _MMX2
 #include "swscale_template.c"
 #endif
@@ -453,7 +841,6 @@ static inline void yuv2rgbXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilt
 #define HAVE_MMX
 #undef HAVE_MMX2
 #define HAVE_3DNOW
-#define ARCH_X86
 #define RENAME(a) a ## _3DNow
 #include "swscale_template.c"
 #endif
@@ -463,7 +850,7 @@ static inline void yuv2rgbXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilt
 // minor note: the HAVE_xyz is messed up after that line so dont use it
 
 
-// old global scaler, dont use for new code, unless it uses only the stuff from the command line
+// old global scaler, dont use for new code
 // will use sws_flags from the command line
 void SwScale_YV12slice(unsigned char* src[], int srcStride[], int srcSliceY ,
                             int srcSliceH, uint8_t* dst[], int dstStride, int dstbpp,
@@ -471,44 +858,8 @@ void SwScale_YV12slice(unsigned char* src[], int srcStride[], int srcSliceY ,
 
        static SwsContext *context=NULL;
        int dstFormat;
-       int flags=0;
-       static int firstTime=1;
        int dstStride3[3]= {dstStride, dstStride>>1, dstStride>>1};
 
-       if(firstTime)
-       {
-               flags= SWS_PRINT_INFO;
-               firstTime=0;
-
-               if(src_filter.lumH) freeVec(src_filter.lumH);
-               if(src_filter.lumV) freeVec(src_filter.lumV);
-               if(src_filter.chrH) freeVec(src_filter.chrH);
-               if(src_filter.chrV) freeVec(src_filter.chrV);
-
-               if(sws_lum_gblur!=0.0){
-                       src_filter.lumH= getGaussianVec(sws_lum_gblur, 3.0);
-                       src_filter.lumV= getGaussianVec(sws_lum_gblur, 3.0);
-               }else{
-                       src_filter.lumH= getIdentityVec();
-                       src_filter.lumV= getIdentityVec();
-               }
-
-               if(sws_chr_gblur!=0.0){
-                       src_filter.chrH= getGaussianVec(sws_chr_gblur, 3.0);
-                       src_filter.chrV= getGaussianVec(sws_chr_gblur, 3.0);
-               }else{
-                       src_filter.chrH= getIdentityVec();
-                       src_filter.chrV= getIdentityVec();
-               }
-
-               if(sws_chr_hshift)
-                       shiftVec(src_filter.chrH, sws_chr_hshift);
-
-               if(sws_chr_vshift)
-                       shiftVec(src_filter.chrV, sws_chr_vshift);
-
-       }
-
        switch(dstbpp)
        {
                case 8 : dstFormat= IMGFMT_Y8;          break;
@@ -520,21 +871,111 @@ void SwScale_YV12slice(unsigned char* src[], int srcStride[], int srcSliceY ,
                default: return;
        }
 
-       switch(sws_flags)
+       if(!context) context=getSwsContextFromCmdLine(srcW, srcH, IMGFMT_YV12, dstW, dstH, dstFormat);
+
+       context->swScale(context, src, srcStride, srcSliceY, srcSliceH, dst, dstStride3);
+}
+
+void swsGetFlagsAndFilterFromCmdLine(int *flags, SwsFilter **srcFilterParam, SwsFilter **dstFilterParam)
+{
+       static int firstTime=1;
+       *flags=0;
+
+#ifdef ARCH_X86
+       if(gCpuCaps.hasMMX)
+               asm volatile("emms\n\t"::: "memory"); //FIXME this shouldnt be required but it IS (even for non mmx versions)
+#endif
+       if(firstTime)
        {
-               case 0: flags|= SWS_FAST_BILINEAR; break;
-               case 1: flags|= SWS_BILINEAR; break;
-               case 2: flags|= SWS_BICUBIC; break;
-               case 3: flags|= SWS_X; break;
-               default:flags|= SWS_BILINEAR; break;
+               firstTime=0;
+               *flags= SWS_PRINT_INFO;
+       }
+       else if(verbose>1) *flags= SWS_PRINT_INFO;
+
+       if(src_filter.lumH) freeVec(src_filter.lumH);
+       if(src_filter.lumV) freeVec(src_filter.lumV);
+       if(src_filter.chrH) freeVec(src_filter.chrH);
+       if(src_filter.chrV) freeVec(src_filter.chrV);
+
+       if(sws_lum_gblur!=0.0){
+               src_filter.lumH= getGaussianVec(sws_lum_gblur, 3.0);
+               src_filter.lumV= getGaussianVec(sws_lum_gblur, 3.0);
+       }else{
+               src_filter.lumH= getIdentityVec();
+               src_filter.lumV= getIdentityVec();
        }
 
-       if(!context) context=getSwsContext(srcW, srcH, IMGFMT_YV12, dstW, dstH, dstFormat, flags, &src_filter, NULL);
+       if(sws_chr_gblur!=0.0){
+               src_filter.chrH= getGaussianVec(sws_chr_gblur, 3.0);
+               src_filter.chrV= getGaussianVec(sws_chr_gblur, 3.0);
+       }else{
+               src_filter.chrH= getIdentityVec();
+               src_filter.chrV= getIdentityVec();
+       }
+
+       if(sws_chr_sharpen!=0.0){
+               SwsVector *g= getConstVec(-1.0, 3);
+               SwsVector *id= getConstVec(10.0/sws_chr_sharpen, 1);
+               g->coeff[1]=2.0;
+               addVec(id, g);
+               convVec(src_filter.chrH, id);
+               convVec(src_filter.chrV, id);
+               freeVec(g);
+               freeVec(id);
+       }
+
+       if(sws_lum_sharpen!=0.0){
+               SwsVector *g= getConstVec(-1.0, 3);
+               SwsVector *id= getConstVec(10.0/sws_lum_sharpen, 1);
+               g->coeff[1]=2.0;
+               addVec(id, g);
+               convVec(src_filter.lumH, id);
+               convVec(src_filter.lumV, id);
+               freeVec(g);
+               freeVec(id);
+       }
 
+       if(sws_chr_hshift)
+               shiftVec(src_filter.chrH, sws_chr_hshift);
 
-       swScale(context, src, srcStride, srcSliceY, srcSliceH, dst, dstStride3);
+       if(sws_chr_vshift)
+               shiftVec(src_filter.chrV, sws_chr_vshift);
+
+       normalizeVec(src_filter.chrH, 1.0);
+       normalizeVec(src_filter.chrV, 1.0);
+       normalizeVec(src_filter.lumH, 1.0);
+       normalizeVec(src_filter.lumV, 1.0);
+
+       if(verbose > 1) printVec(src_filter.chrH);
+       if(verbose > 1) printVec(src_filter.lumH);
+
+       switch(sws_flags)
+       {
+               case 0: *flags|= SWS_FAST_BILINEAR; break;
+               case 1: *flags|= SWS_BILINEAR; break;
+               case 2: *flags|= SWS_BICUBIC; break;
+               case 3: *flags|= SWS_X; break;
+               case 4: *flags|= SWS_POINT; break;
+               case 5: *flags|= SWS_AREA; break;
+               case 6: *flags|= SWS_BICUBLIN; break;
+               default:*flags|= SWS_BILINEAR; break;
+       }
+       
+       *srcFilterParam= &src_filter;
+       *dstFilterParam= NULL;
 }
 
+// will use sws_flags & src_filter (from cmd line)
+SwsContext *getSwsContextFromCmdLine(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat)
+{
+       int flags;
+       SwsFilter *dstFilterParam, *srcFilterParam;
+       swsGetFlagsAndFilterFromCmdLine(&flags, &srcFilterParam, &dstFilterParam);
+
+       return getSwsContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, srcFilterParam, dstFilterParam);
+}
+
+
 static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,
                              int srcW, int dstW, int filterAlign, int one, int flags,
                              SwsVector *srcFilter, SwsVector *dstFilter)
@@ -550,7 +991,8 @@ static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *out
                asm volatile("emms\n\t"::: "memory"); //FIXME this shouldnt be required but it IS (even for non mmx versions)
 #endif
 
-       *filterPos = (int16_t*)memalign(8, dstW*sizeof(int16_t));
+       // Note the +1 is for the MMXscaler which reads over the end
+       *filterPos = (int16_t*)memalign(8, (dstW+1)*sizeof(int16_t));
 
        if(ABS(xInc - 0x10000) <10) // unscaled
        {
@@ -566,20 +1008,36 @@ static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *out
                }
 
        }
+       else if(flags&SWS_POINT) // lame looking point sampling mode
+       {
+               int i;
+               int xDstInSrc;
+               filterSize= 1;
+               filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
+               
+               xDstInSrc= xInc/2 - 0x8000;
+               for(i=0; i<dstW; i++)
+               {
+                       int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
+
+                       (*filterPos)[i]= xx;
+                       filter[i]= 1.0;
+                       xDstInSrc+= xInc;
+               }
+       }
        else if(xInc <= (1<<16) || (flags&SWS_FAST_BILINEAR)) // upscale
        {
                int i;
                int xDstInSrc;
                if     (flags&SWS_BICUBIC) filterSize= 4;
                else if(flags&SWS_X      ) filterSize= 4;
-               else                       filterSize= 2;
-//             printf("%d %d %d\n", filterSize, srcW, dstW);
+               else                       filterSize= 2; // SWS_BILINEAR / SWS_AREA 
                filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
 
                xDstInSrc= xInc/2 - 0x8000;
                for(i=0; i<dstW; i++)
                {
-                       int xx= (xDstInSrc>>16) - (filterSize>>1) + 1;
+                       int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
                        int j;
 
                        (*filterPos)[i]= xx;
@@ -602,21 +1060,19 @@ static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *out
                                        y4 = (    -1.0*d           + 1.0*d*d*d)/6.0;
                                }
 
-//                             printf("%d %d %d \n", coeff, (int)d, xDstInSrc);
                                filter[i*filterSize + 0]= y1;
                                filter[i*filterSize + 1]= y2;
                                filter[i*filterSize + 2]= y3;
                                filter[i*filterSize + 3]= y4;
-//                             printf("%1.3f %1.3f %1.3f %1.3f %1.3f\n",d , y1, y2, y3, y4);
                        }
                        else
                        {
+                               //Bilinear upscale / linear interpolate / Area averaging
                                for(j=0; j<filterSize; j++)
                                {
                                        double d= ABS((xx<<16) - xDstInSrc)/(double)(1<<16);
                                        double coeff= 1.0 - d;
                                        if(coeff<0) coeff=0;
-       //                              printf("%d %d %d \n", coeff, (int)d, xDstInSrc);
                                        filter[i*filterSize + j]= coeff;
                                        xx++;
                                }
@@ -627,10 +1083,12 @@ static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *out
        else // downscale
        {
                int xDstInSrc;
-               if(flags&SWS_BICUBIC) filterSize= (int)ceil(1 + 4.0*srcW / (double)dstW);
-               else if(flags&SWS_X)  filterSize= (int)ceil(1 + 4.0*srcW / (double)dstW);
-               else                  filterSize= (int)ceil(1 + 2.0*srcW / (double)dstW);
-//             printf("%d %d %d\n", *filterSize, srcW, dstW);
+               ASSERT(dstW <= srcW)
+
+               if(flags&SWS_BICUBIC)   filterSize= (int)ceil(1 + 4.0*srcW / (double)dstW);
+               else if(flags&SWS_X)    filterSize= (int)ceil(1 + 4.0*srcW / (double)dstW);
+               else if(flags&SWS_AREA) filterSize= (int)ceil(1 + 1.0*srcW / (double)dstW);
+               else /* BILINEAR */     filterSize= (int)ceil(1 + 2.0*srcW / (double)dstW);
                filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
 
                xDstInSrc= xInc/2 - 0x8000;
@@ -655,15 +1113,18 @@ static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *out
                                        else
                                                coeff=0.0;
                                }
-/*                             else if(flags & SWS_X)
+                               else if(flags & SWS_AREA)
                                {
-                               }*/
+                                       double srcPixelSize= (1<<16)/(double)xInc;
+                                       if(d + srcPixelSize/2 < 0.5) coeff= 1.0;
+                                       else if(d - srcPixelSize/2 < 0.5) coeff= (0.5-d)/srcPixelSize + 0.5;
+                                       else coeff=0.0;
+                               }
                                else
                                {
                                        coeff= 1.0 - d;
                                        if(coeff<0) coeff=0;
                                }
-//                             printf("%1.3f %d %d \n", coeff, (int)d, xDstInSrc);
                                filter[i*filterSize + j]= coeff;
                                xx++;
                        }
@@ -674,9 +1135,11 @@ static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *out
        /* apply src & dst Filter to filter -> filter2
           free(filter);
        */
+       ASSERT(filterSize>0)
        filter2Size= filterSize;
        if(srcFilter) filter2Size+= srcFilter->length - 1;
        if(dstFilter) filter2Size+= dstFilter->length - 1;
+       ASSERT(filter2Size>0)
        filter2= (double*)memalign(8, filter2Size*dstW*sizeof(double));
 
        for(i=0; i<dstW; i++)
@@ -745,18 +1208,27 @@ static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *out
                if(min>minFilterSize) minFilterSize= min;
        }
 
+       ASSERT(minFilterSize > 0)
+       filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
+       ASSERT(filterSize > 0)
+       filter= (double*)memalign(8, filterSize*dstW*sizeof(double));
+       *outFilterSize= filterSize;
+
+       if(flags&SWS_PRINT_INFO)
+               MSG_INFO("SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);
        /* try to reduce the filter-size (step2 reduce it) */
        for(i=0; i<dstW; i++)
        {
                int j;
 
-               for(j=0; j<minFilterSize; j++)
-                       filter2[i*minFilterSize + j]= filter2[i*filter2Size + j];
+               for(j=0; j<filterSize; j++)
+               {
+                       if(j>=filter2Size) filter[i*filterSize + j]= 0.0;
+                       else               filter[i*filterSize + j]= filter2[i*filter2Size + j];
+               }
        }
-       if((flags&SWS_PRINT_INFO) && verbose)
-               printf("SwScaler: reducing filtersize %d -> %d\n", filter2Size, minFilterSize);
-       filter2Size= minFilterSize;
-       ASSERT(filter2Size > 0)
+       free(filter2); filter2=NULL;
+       
 
        //FIXME try to align filterpos if possible
 
@@ -767,33 +1239,32 @@ static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *out
                if((*filterPos)[i] < 0)
                {
                        // Move filter coeffs left to compensate for filterPos
-                       for(j=1; j<filter2Size; j++)
+                       for(j=1; j<filterSize; j++)
                        {
                                int left= MAX(j + (*filterPos)[i], 0);
-                               filter2[i*filter2Size + left] += filter2[i*filter2Size + j];
-                               filter2[i*filter2Size + j]=0;
+                               filter[i*filterSize + left] += filter[i*filterSize + j];
+                               filter[i*filterSize + j]=0;
                        }
                        (*filterPos)[i]= 0;
                }
 
-               if((*filterPos)[i] + filter2Size > srcW)
+               if((*filterPos)[i] + filterSize > srcW)
                {
-                       int shift= (*filterPos)[i] + filter2Size - srcW;
+                       int shift= (*filterPos)[i] + filterSize - srcW;
                        // Move filter coeffs right to compensate for filterPos
-                       for(j=filter2Size-2; j>=0; j--)
+                       for(j=filterSize-2; j>=0; j--)
                        {
-                               int right= MIN(j + shift, filter2Size-1);
-                               filter2[i*filter2Size +right] += filter2[i*filter2Size +j];
-                               filter2[i*filter2Size +j]=0;
+                               int right= MIN(j + shift, filterSize-1);
+                               filter[i*filterSize +right] += filter[i*filterSize +j];
+                               filter[i*filterSize +j]=0;
                        }
-                       (*filterPos)[i]= srcW - filter2Size;
+                       (*filterPos)[i]= srcW - filterSize;
                }
        }
 
-
-       *outFilterSize= (filter2Size +(filterAlign-1)) & (~(filterAlign-1));
-       *outFilter= (int16_t*)memalign(8, *outFilterSize*dstW*sizeof(int16_t));
-       memset(*outFilter, 0, *outFilterSize*dstW*sizeof(int16_t));
+       // Note the +1 is for the MMXscaler which reads over the end
+       *outFilter= (int16_t*)memalign(8, *outFilterSize*(dstW+1)*sizeof(int16_t));
+       memset(*outFilter, 0, *outFilterSize*(dstW+1)*sizeof(int16_t));
 
        /* Normalize & Store in outFilter */
        for(i=0; i<dstW; i++)
@@ -801,27 +1272,39 @@ static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *out
                int j;
                double sum=0;
                double scale= one;
-               for(j=0; j<filter2Size; j++)
+               for(j=0; j<filterSize; j++)
                {
-                       sum+= filter2[i*filter2Size + j];
+                       sum+= filter[i*filterSize + j];
                }
                scale/= sum;
-               for(j=0; j<filter2Size; j++)
+               for(j=0; j<filterSize; j++)
                {
-                       (*outFilter)[i*(*outFilterSize) + j]= (int)(filter2[i*filter2Size + j]*scale);
+                       (*outFilter)[i*(*outFilterSize) + j]= (int)(filter[i*filterSize + j]*scale);
                }
        }
+       
+       (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end
+       for(i=0; i<*outFilterSize; i++)
+       {
+               int j= dstW*(*outFilterSize);
+               (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];
+       }
 
-       free(filter2);
+       free(filter);
 }
 
 #ifdef ARCH_X86
-static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode)
+static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)
 {
-       uint8_t *fragment;
-       int imm8OfPShufW1;
-       int imm8OfPShufW2;
-       int fragmentLength;
+       uint8_t *fragmentA;
+       int imm8OfPShufW1A;
+       int imm8OfPShufW2A;
+       int fragmentLengthA;
+       uint8_t *fragmentB;
+       int imm8OfPShufW1B;
+       int imm8OfPShufW2B;
+       int fragmentLengthB;
+       int fragmentPos;
 
        int xpos, i;
 
@@ -833,22 +1316,18 @@ static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode)
                "jmp 9f                         \n\t"
        // Begin
                "0:                             \n\t"
-               "movq (%%esi), %%mm0            \n\t" //FIXME Alignment
-               "movq %%mm0, %%mm1              \n\t"
-               "psrlq $8, %%mm0                \n\t"
-               "punpcklbw %%mm7, %%mm1 \n\t"
-               "movq %%mm2, %%mm3              \n\t"
-               "punpcklbw %%mm7, %%mm0 \n\t"
-               "addw %%bx, %%cx                \n\t" //2*xalpha += (4*lumXInc)&0xFFFF
+               "movq (%%edx, %%eax), %%mm3     \n\t" 
+               "movd (%%ecx, %%esi), %%mm0     \n\t" 
+               "movd 1(%%ecx, %%esi), %%mm1    \n\t"
+               "punpcklbw %%mm7, %%mm1         \n\t"
+               "punpcklbw %%mm7, %%mm0         \n\t"
                "pshufw $0xFF, %%mm1, %%mm1     \n\t"
                "1:                             \n\t"
-               "adcl %%edx, %%esi              \n\t" //xx+= (4*lumXInc)>>16 + carry
                "pshufw $0xFF, %%mm0, %%mm0     \n\t"
                "2:                             \n\t"
-               "psrlw $9, %%mm3                \n\t"
                "psubw %%mm1, %%mm0             \n\t"
+               "movl 8(%%ebx, %%eax), %%esi    \n\t"
                "pmullw %%mm3, %%mm0            \n\t"
-               "paddw %%mm6, %%mm2             \n\t" // 2*alpha += xpos&0xFFFF
                "psllw $7, %%mm1                \n\t"
                "paddw %%mm1, %%mm0             \n\t"
 
@@ -867,13 +1346,54 @@ static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode)
                "subl %0, %2                    \n\t"
                "leal 9b, %3                    \n\t"
                "subl %0, %3                    \n\t"
-               :"=r" (fragment), "=r" (imm8OfPShufW1), "=r" (imm8OfPShufW2),
-               "=r" (fragmentLength)
+
+
+               :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),
+               "=r" (fragmentLengthA)
        );
 
-       xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
+       asm volatile(
+               "jmp 9f                         \n\t"
+       // Begin
+               "0:                             \n\t"
+               "movq (%%edx, %%eax), %%mm3     \n\t" 
+               "movd (%%ecx, %%esi), %%mm0     \n\t" 
+               "punpcklbw %%mm7, %%mm0         \n\t"
+               "pshufw $0xFF, %%mm0, %%mm1     \n\t"
+               "1:                             \n\t"
+               "pshufw $0xFF, %%mm0, %%mm0     \n\t"
+               "2:                             \n\t"
+               "psubw %%mm1, %%mm0             \n\t"
+               "movl 8(%%ebx, %%eax), %%esi    \n\t"
+               "pmullw %%mm3, %%mm0            \n\t"
+               "psllw $7, %%mm1                \n\t"
+               "paddw %%mm1, %%mm0             \n\t"
+
+               "movq %%mm0, (%%edi, %%eax)     \n\t"
+
+               "addl $8, %%eax                 \n\t"
+       // End
+               "9:                             \n\t"
+//             "int $3\n\t"
+               "leal 0b, %0                    \n\t"
+               "leal 1b, %1                    \n\t"
+               "leal 2b, %2                    \n\t"
+               "decl %1                        \n\t"
+               "decl %2                        \n\t"
+               "subl %0, %1                    \n\t"
+               "subl %0, %2                    \n\t"
+               "leal 9b, %3                    \n\t"
+               "subl %0, %3                    \n\t"
 
-       for(i=0; i<dstW/8; i++)
+
+               :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),
+               "=r" (fragmentLengthB)
+       );
+
+       xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
+       fragmentPos=0;
+       
+       for(i=0; i<dstW/numSplits; i++)
        {
                int xx=xpos>>16;
 
@@ -884,20 +1404,65 @@ static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode)
                        int c=((xpos+xInc*2)>>16) - xx;
                        int d=((xpos+xInc*3)>>16) - xx;
 
-                       memcpy(funnyCode + fragmentLength*i/4, fragment, fragmentLength);
+                       filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;
+                       filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;
+                       filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
+                       filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;
+                       filterPos[i/2]= xx;
+
+                       if(d+1<4)
+                       {
+                               int maxShift= 3-(d+1);
+                               int shift=0;
+
+                               memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);
+
+                               funnyCode[fragmentPos + imm8OfPShufW1B]=
+                                       (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);
+                               funnyCode[fragmentPos + imm8OfPShufW2B]=
+                                       a | (b<<2) | (c<<4) | (d<<6);
 
-                       funnyCode[fragmentLength*i/4 + imm8OfPShufW1]=
-                       funnyCode[fragmentLength*i/4 + imm8OfPShufW2]=
-                               a | (b<<2) | (c<<4) | (d<<6);
+                               if(i+3>=dstW) shift=maxShift; //avoid overread
+                               else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align
 
-                       // if we dont need to read 8 bytes than dont :), reduces the chance of
-                       // crossing a cache line
-                       if(d<3) funnyCode[fragmentLength*i/4 + 1]= 0x6E;
+                               if(shift && i>=shift)
+                               {
+                                       funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;
+                                       funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;
+                                       filterPos[i/2]-=shift;
+                               }
+
+                               fragmentPos+= fragmentLengthB;
+                       }
+                       else
+                       {
+                               int maxShift= 3-d;
+                               int shift=0;
 
-                       funnyCode[fragmentLength*(i+4)/4]= RET;
+                               memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);
+
+                               funnyCode[fragmentPos + imm8OfPShufW1A]=
+                               funnyCode[fragmentPos + imm8OfPShufW2A]=
+                                       a | (b<<2) | (c<<4) | (d<<6);
+
+                               if(i+4>=dstW) shift=maxShift; //avoid overread
+                               else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align
+
+                               if(shift && i>=shift)
+                               {
+                                       funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;
+                                       funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;
+                                       filterPos[i/2]-=shift;
+                               }
+
+                               fragmentPos+= fragmentLengthA;
+                       }
+
+                       funnyCode[fragmentPos]= RET;
                }
                xpos+=xInc;
        }
+       filterPos[i/2]= xpos>>16; // needed to jump to the next part
 }
 #endif // ARCH_X86
 
@@ -911,22 +1476,6 @@ static void globalInit(){
     for(i=0; i<768; i++){
        int c= MIN(MAX(i-256, 0), 255);
        clip_table[i]=c;
-       yuvtab_2568[c]= clip_yuvtab_2568[i]=(0x2568*(c-16))+(256<<13);
-       yuvtab_3343[c]= clip_yuvtab_3343[i]=0x3343*(c-128);
-       yuvtab_0c92[c]= clip_yuvtab_0c92[i]=-0x0c92*(c-128);
-       yuvtab_1a1e[c]= clip_yuvtab_1a1e[i]=-0x1a1e*(c-128);
-       yuvtab_40cf[c]= clip_yuvtab_40cf[i]=0x40cf*(c-128);
-    }
-
-    for(i=0; i<768; i++)
-    {
-       int v= clip_table[i];
-       clip_table16b[i]= v>>3;
-       clip_table16g[i]= (v<<3)&0x07E0;
-       clip_table16r[i]= (v<<8)&0xF800;
-       clip_table15b[i]= v>>3;
-       clip_table15g[i]= (v<<2)&0x03E0;
-       clip_table15r[i]= (v<<7)&0x7C00;
     }
 
 cpuCaps= gCpuCaps;
@@ -964,34 +1513,381 @@ cpuCaps= gCpuCaps;
 #endif //!RUNTIME_CPUDETECT
 }
 
+static void PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
+             int srcSliceH, uint8_t* dstParam[], int dstStride[]){
+       uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
+       /* Copy Y plane */
+       if(dstStride[0]==srcStride[0])
+               memcpy(dst, src[0], srcSliceH*dstStride[0]);
+       else
+       {
+               int i;
+               uint8_t *srcPtr= src[0];
+               uint8_t *dstPtr= dst;
+               for(i=0; i<srcSliceH; i++)
+               {
+                       memcpy(dstPtr, srcPtr, srcStride[0]);
+                       srcPtr+= srcStride[0];
+                       dstPtr+= dstStride[0];
+               }
+       }
+       dst = dstParam[1] + dstStride[1]*srcSliceY;
+       if(c->srcFormat==IMGFMT_YV12)
+               interleaveBytes( src[1],src[2],dst,c->srcW,srcSliceH,srcStride[1],srcStride[2],dstStride[0] );
+       else /* I420 & IYUV */
+               interleaveBytes( src[2],src[1],dst,c->srcW,srcSliceH,srcStride[2],srcStride[1],dstStride[0] );
+}
+
+
+/* Warper functions for yuv2bgr */
+static void planarYuvToBgr(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
+             int srcSliceH, uint8_t* dstParam[], int dstStride[]){
+       uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
+
+       if(c->srcFormat==IMGFMT_YV12)
+               yuv2rgb( dst,src[0],src[1],src[2],c->srcW,srcSliceH,dstStride[0],srcStride[0],srcStride[1] );
+       else /* I420 & IYUV */
+               yuv2rgb( dst,src[0],src[2],src[1],c->srcW,srcSliceH,dstStride[0],srcStride[0],srcStride[1] );
+}
+
+static void PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
+             int srcSliceH, uint8_t* dstParam[], int dstStride[]){
+       uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
+
+       if(c->srcFormat==IMGFMT_YV12)
+               yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
+       else /* I420 & IYUV */
+               yv12toyuy2( src[0],src[2],src[1],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
+}
+
+/* {RGB,BGR}{15,16,24,32} -> {RGB,BGR}{15,16,24,32} */
+static void rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
+                          int srcSliceH, uint8_t* dst[], int dstStride[]){
+       const int srcFormat= c->srcFormat;
+       const int dstFormat= c->dstFormat;
+       const int srcBpp= ((srcFormat&0xFF) + 7)>>3;
+       const int dstBpp= ((dstFormat&0xFF) + 7)>>3;
+       const int srcId= (srcFormat&0xFF)>>2; // 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 
+       const int dstId= (dstFormat&0xFF)>>2;
+       void (*conv)(const uint8_t *src, uint8_t *dst, unsigned src_size)=NULL;
+
+       /* BGR -> BGR */
+       if(isBGR(srcFormat) && isBGR(dstFormat)){
+               switch(srcId | (dstId<<4)){
+               case 0x34: conv= rgb16to15; break;
+               case 0x36: conv= rgb24to15; break;
+               case 0x38: conv= rgb32to15; break;
+               case 0x43: conv= rgb15to16; break;
+               case 0x46: conv= rgb24to16; break;
+               case 0x48: conv= rgb32to16; break;
+               case 0x63: conv= rgb15to24; break;
+               case 0x64: conv= rgb16to24; break;
+               case 0x68: conv= rgb32to24; break;
+               case 0x83: conv= rgb15to32; break;
+               case 0x84: conv= rgb16to32; break;
+               case 0x86: conv= rgb24to32; break;
+               default: MSG_ERR("swScaler: internal error %s -> %s converter\n", 
+                                vo_format_name(srcFormat), vo_format_name(dstFormat)); break;
+               }
+       }else if(isBGR(srcFormat) && isRGB(dstFormat)){
+               switch(srcId | (dstId<<4)){
+               case 0x33: conv= rgb15tobgr15; break;
+               case 0x34: conv= rgb16tobgr15; break;
+               case 0x36: conv= rgb24tobgr15; break;
+               case 0x38: conv= rgb32tobgr15; break;
+               case 0x43: conv= rgb15tobgr16; break;
+               case 0x44: conv= rgb16tobgr16; break;
+               case 0x46: conv= rgb24tobgr16; break;
+               case 0x48: conv= rgb32tobgr16; break;
+               case 0x63: conv= rgb15tobgr24; break;
+               case 0x64: conv= rgb16tobgr24; break;
+               case 0x66: conv= rgb24tobgr24; break;
+               case 0x68: conv= rgb32tobgr24; break;
+               case 0x83: conv= rgb15tobgr32; break;
+               case 0x84: conv= rgb16tobgr32; break;
+               case 0x86: conv= rgb24tobgr32; break;
+               case 0x88: conv= rgb32tobgr32; break;
+               default: MSG_ERR("swScaler: internal error %s -> %s converter\n", 
+                                vo_format_name(srcFormat), vo_format_name(dstFormat)); break;
+               }
+       }else if(isRGB(srcFormat) && isRGB(dstFormat)){
+               switch(srcId | (dstId<<4)){
+               case 0x34: conv= rgb16to15; break;
+               case 0x36: conv= rgb24to15; break;
+               case 0x38: conv= rgb32to15; break;
+               case 0x43: conv= rgb15to16; break;
+               case 0x46: conv= rgb24to16; break;
+               case 0x48: conv= rgb32to16; break;
+               case 0x63: conv= rgb15to24; break;
+               case 0x64: conv= rgb16to24; break;
+               case 0x68: conv= rgb32to24; break;
+               case 0x83: conv= rgb15to32; break;
+               case 0x84: conv= rgb16to32; break;
+               case 0x86: conv= rgb24to32; break;
+               default: MSG_ERR("swScaler: internal error %s -> %s converter\n", 
+                                vo_format_name(srcFormat), vo_format_name(dstFormat)); break;
+               }
+       }else if(isRGB(srcFormat) && isBGR(dstFormat)){
+               switch(srcId | (dstId<<4)){
+               case 0x33: conv= rgb15tobgr15; break;
+               case 0x34: conv= rgb16tobgr15; break;
+               case 0x36: conv= rgb24tobgr15; break;
+               case 0x38: conv= rgb32tobgr15; break;
+               case 0x43: conv= rgb15tobgr16; break;
+               case 0x44: conv= rgb16tobgr16; break;
+               case 0x46: conv= rgb24tobgr16; break;
+               case 0x48: conv= rgb32tobgr16; break;
+               case 0x63: conv= rgb15tobgr24; break;
+               case 0x64: conv= rgb16tobgr24; break;
+               case 0x66: conv= rgb24tobgr24; break;
+               case 0x68: conv= rgb32tobgr24; break;
+               case 0x83: conv= rgb15tobgr32; break;
+               case 0x84: conv= rgb16tobgr32; break;
+               case 0x86: conv= rgb24tobgr32; break;
+               case 0x88: conv= rgb32tobgr32; break;
+               default: MSG_ERR("swScaler: internal error %s -> %s converter\n", 
+                                vo_format_name(srcFormat), vo_format_name(dstFormat)); break;
+               }
+       }
+       if(dstStride[0]*srcBpp == srcStride[0]*dstBpp)
+               conv(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
+       else
+       {
+               int i;
+               uint8_t *srcPtr= src[0];
+               uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
+
+               for(i=0; i<srcSliceH; i++)
+               {
+                       conv(srcPtr, dstPtr, c->srcW*srcBpp);
+                       srcPtr+= srcStride[0];
+                       dstPtr+= dstStride[0];
+               }
+       }     
+}
+
+static void bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
+             int srcSliceH, uint8_t* dst[], int dstStride[]){
+
+       rgb24toyv12(
+               src[0], 
+               dst[0]+ srcSliceY    *dstStride[0], 
+               dst[1]+(srcSliceY>>1)*dstStride[1], 
+               dst[2]+(srcSliceY>>1)*dstStride[2],
+               c->srcW, srcSliceH, 
+               dstStride[0], dstStride[1], srcStride[0]);
+}
+
+static void yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
+             int srcSliceH, uint8_t* dst[], int dstStride[]){
+       int i;
+
+       /* copy Y */
+       if(srcStride[0]==dstStride[0]) 
+               memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
+       else{
+               uint8_t *srcPtr= src[0];
+               uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
+
+               for(i=0; i<srcSliceH; i++)
+               {
+                       memcpy(dstPtr, srcPtr, c->srcW);
+                       srcPtr+= srcStride[0];
+                       dstPtr+= dstStride[0];
+               }
+       }
+
+       if(c->dstFormat==IMGFMT_YV12){
+               planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);
+               planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);
+       }else{
+               planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);
+               planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);
+       }
+}
+
+/**
+ * bring pointers in YUV order instead of YVU
+ */
+static inline void orderYUV(int format, uint8_t * sortedP[], int sortedStride[], uint8_t * p[], int stride[]){
+       if(format == IMGFMT_YV12 || format == IMGFMT_YVU9){
+               sortedP[0]= p[0];
+               sortedP[1]= p[1];
+               sortedP[2]= p[2];
+               sortedStride[0]= stride[0];
+               sortedStride[1]= stride[1];
+               sortedStride[2]= stride[2];
+       }
+       else if(isPacked(format) || isGray(format))
+       {
+               sortedP[0]= p[0];
+               sortedP[1]= 
+               sortedP[2]= NULL;
+               sortedStride[0]= stride[0];
+               sortedStride[1]= 
+               sortedStride[2]= 0;
+       }
+       else if(format == IMGFMT_I420)
+       {
+               sortedP[0]= p[0];
+               sortedP[1]= p[2];
+               sortedP[2]= p[1];
+               sortedStride[0]= stride[0];
+               sortedStride[1]= stride[2];
+               sortedStride[2]= stride[1];
+       }else{
+               MSG_ERR("internal error in orderYUV\n");
+       }
+}
+
+/* unscaled copy like stuff (assumes nearly identical formats) */
+static void simpleCopy(SwsContext *c, uint8_t* srcParam[], int srcStrideParam[], int srcSliceY,
+             int srcSliceH, uint8_t* dstParam[], int dstStrideParam[]){
+
+       int srcStride[3];
+       int dstStride[3];
+       uint8_t *src[3];
+       uint8_t *dst[3];
+
+       orderYUV(c->srcFormat, src, srcStride, srcParam, srcStrideParam);
+       orderYUV(c->dstFormat, dst, dstStride, dstParam, dstStrideParam);
+
+       if(isPacked(c->srcFormat))
+       {
+               if(dstStride[0]==srcStride[0])
+                       memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
+               else
+               {
+                       int i;
+                       uint8_t *srcPtr= src[0];
+                       uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
+                       int length=0;
+
+                       /* universal length finder */
+                       while(length+c->srcW <= ABS(dstStride[0]) 
+                          && length+c->srcW <= ABS(srcStride[0])) length+= c->srcW;
+                       ASSERT(length!=0);
+
+                       for(i=0; i<srcSliceH; i++)
+                       {
+                               memcpy(dstPtr, srcPtr, length);
+                               srcPtr+= srcStride[0];
+                               dstPtr+= dstStride[0];
+                       }
+               }
+       }
+       else 
+       { /* Planar YUV or gray */
+               int plane;
+               for(plane=0; plane<3; plane++)
+               {
+                       int length= plane==0 ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);
+                       int y=      plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
+                       int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
+
+                       if((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)
+                       {
+                               if(!isGray(c->dstFormat))
+                                       memset(dst[plane], 128, dstStride[plane]*height);
+                       }
+                       else
+                       {
+                               if(dstStride[plane]==srcStride[plane])
+                                       memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
+                               else
+                               {
+                                       int i;
+                                       uint8_t *srcPtr= src[plane];
+                                       uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
+                                       for(i=0; i<height; i++)
+                                       {
+                                               memcpy(dstPtr, srcPtr, length);
+                                               srcPtr+= srcStride[plane];
+                                               dstPtr+= dstStride[plane];
+                                       }
+                               }
+                       }
+               }
+       }
+}
+
+static int remove_dup_fourcc(int fourcc)
+{
+       switch(fourcc)
+       {
+           case IMGFMT_IYUV: return IMGFMT_I420;
+           case IMGFMT_Y8  : return IMGFMT_Y800;
+           case IMGFMT_IF09: return IMGFMT_YVU9;
+           default: return fourcc;
+       }
+}
+
+static void getSubSampleFactors(int *h, int *v, int format){
+       switch(format){
+       case IMGFMT_YUY2:
+               *h=1;
+               *v=0;
+               break;
+       case IMGFMT_YV12:
+       case IMGFMT_I420:
+       case IMGFMT_Y800: //FIXME remove after different subsamplings are fully implemented
+               *h=1;
+               *v=1;
+               break;
+       case IMGFMT_YVU9:
+               *h=2;
+               *v=2;
+               break;
+       default:
+               *h=0;
+               *v=0;
+               break;
+       }
+}
 
 SwsContext *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,
                          SwsFilter *srcFilter, SwsFilter *dstFilter){
 
-       const int widthAlign= dstFormat==IMGFMT_YV12 ? 16 : 8;
        SwsContext *c;
        int i;
+       int usesFilter;
+       int unscaled, needsDither;
        SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
-
 #ifdef ARCH_X86
        if(gCpuCaps.hasMMX)
                asm volatile("emms\n\t"::: "memory");
 #endif
-
        if(swScale==NULL) globalInit();
+//srcFormat= IMGFMT_Y800;
+//dstFormat= IMGFMT_Y800;
+       /* avoid dupplicate Formats, so we dont need to check to much */
+       srcFormat = remove_dup_fourcc(srcFormat);
+       dstFormat = remove_dup_fourcc(dstFormat);
+
+       unscaled = (srcW == dstW && srcH == dstH);
+       needsDither= (isBGR(dstFormat) || isRGB(dstFormat)) 
+                    && (dstFormat&0xFF)<24
+                    && ((dstFormat&0xFF)<(srcFormat&0xFF) || (!(isRGB(srcFormat) || isBGR(srcFormat))));
+
+       if(!isSupportedIn(srcFormat)) 
+       {
+               MSG_ERR("swScaler: %s is not supported as input format\n", vo_format_name(srcFormat));
+               return NULL;
+       }
+       if(!isSupportedOut(dstFormat))
+       {
+               MSG_ERR("swScaler: %s is not supported as output format\n", vo_format_name(dstFormat));
+               return NULL;
+       }
 
        /* sanity check */
-       if(srcW<1 || srcH<1 || dstW<1 || dstH<1) return NULL;
-
-/* FIXME
-       if(dstStride[0]%widthAlign !=0 )
+       if(srcW<4 || srcH<1 || dstW<8 || dstH<1) //FIXME check if these are enough and try to lowwer them after fixing the relevant parts of the code
        {
-               if(flags & SWS_PRINT_INFO)
-                       fprintf(stderr, "SwScaler: Warning: dstStride is not a multiple of %d!\n"
-                                       "SwScaler:          ->cannot do aligned memory acesses anymore\n",
-                                       widthAlign);
+                MSG_ERR("swScaler: %dx%d -> %dx%d is invalid scaling dimension\n", 
+                       srcW, srcH, dstW, dstH);
+               return NULL;
        }
-*/
+
        if(!dstFilter) dstFilter= &dummyFilter;
        if(!srcFilter) srcFilter= &dummyFilter;
 
@@ -1002,24 +1898,162 @@ SwsContext *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH,
        c->srcH= srcH;
        c->dstW= dstW;
        c->dstH= dstH;
-       c->lumXInc= ((srcW<<16) + (1<<15))/dstW;
-       c->lumYInc= ((srcH<<16) + (1<<15))/dstH;
+       c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
+       c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
        c->flags= flags;
        c->dstFormat= dstFormat;
        c->srcFormat= srcFormat;
 
+       usesFilter=0;
+       if(dstFilter->lumV!=NULL && dstFilter->lumV->length>1) usesFilter=1;
+       if(dstFilter->lumH!=NULL && dstFilter->lumH->length>1) usesFilter=1;
+       if(dstFilter->chrV!=NULL && dstFilter->chrV->length>1) usesFilter=1;
+       if(dstFilter->chrH!=NULL && dstFilter->chrH->length>1) usesFilter=1;
+       if(srcFilter->lumV!=NULL && srcFilter->lumV->length>1) usesFilter=1;
+       if(srcFilter->lumH!=NULL && srcFilter->lumH->length>1) usesFilter=1;
+       if(srcFilter->chrV!=NULL && srcFilter->chrV->length>1) usesFilter=1;
+       if(srcFilter->chrH!=NULL && srcFilter->chrH->length>1) usesFilter=1;
+
+       getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);
+       getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);
+
+       // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation
+       if((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;
+
+       // drop some chroma lines if the user wants it
+       c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;
+       c->chrSrcVSubSample+= c->vChrDrop;
+
+       // drop every 2. pixel for chroma calculation unless user wants full chroma
+       if((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)) 
+               c->chrSrcHSubSample=1;
+
+       c->chrIntHSubSample= c->chrDstHSubSample;
+       c->chrIntVSubSample= c->chrSrcVSubSample;
+       
+       // note the -((-x)>>y) is so that we allways round toward +inf
+       c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);
+       c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);
+       c->chrDstW= -((-dstW) >> c->chrDstHSubSample);
+       c->chrDstH= -((-dstH) >> c->chrDstVSubSample);
+       
+       if(isBGR(dstFormat))
+               c->yuvTable= yuv2rgb_c_init(dstFormat & 0xFF, MODE_RGB, c->table_rV, c->table_gU, c->table_gV, c->table_bU);
+       if(isRGB(dstFormat))
+               c->yuvTable= yuv2rgb_c_init(dstFormat & 0xFF, MODE_BGR, c->table_rV, c->table_gU, c->table_gV, c->table_bU);
+
+       /* unscaled special Cases */
+       if(unscaled && !usesFilter)
+       {
+               /* yv12_to_nv12 */
+               if((srcFormat == IMGFMT_YV12||srcFormat==IMGFMT_I420)&&dstFormat == IMGFMT_NV12)
+               {
+                       c->swScale= PlanarToNV12Wrapper;
+
+                       if(flags&SWS_PRINT_INFO)
+                               MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 
+                                       vo_format_name(srcFormat), vo_format_name(dstFormat));
+                       return c;
+               }
+               /* yv12_to_yuy2 */
+               if((srcFormat == IMGFMT_YV12||srcFormat==IMGFMT_I420)&&dstFormat == IMGFMT_YUY2)
+               {
+                       c->swScale= PlanarToYuy2Wrapper;
+
+                       if(flags&SWS_PRINT_INFO)
+                               MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 
+                                       vo_format_name(srcFormat), vo_format_name(dstFormat));
+                       return c;
+               }
+               /* yuv2bgr */
+               if((srcFormat==IMGFMT_YV12 || srcFormat==IMGFMT_I420) && isBGR(dstFormat))
+               {
+                       // FIXME multiple yuv2rgb converters wont work that way cuz that thing is full of globals&statics
+                       //FIXME rgb vs. bgr ? 
+#ifdef WORDS_BIGENDIAN
+                       if(dstFormat==IMGFMT_BGR32)
+                               yuv2rgb_init( dstFormat&0xFF /* =bpp */, MODE_BGR);
+                       else
+                               yuv2rgb_init( dstFormat&0xFF /* =bpp */, MODE_RGB);
+#else
+                       yuv2rgb_init( dstFormat&0xFF /* =bpp */, MODE_RGB);
+#endif
+                       c->swScale= planarYuvToBgr;
+
+                       if(flags&SWS_PRINT_INFO)
+                               MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 
+                                       vo_format_name(srcFormat), vo_format_name(dstFormat));
+                       return c;
+               }
+               
+               /* simple copy */
+               if(   srcFormat == dstFormat
+                  || (srcFormat==IMGFMT_YV12 && dstFormat==IMGFMT_I420)
+                  || (srcFormat==IMGFMT_I420 && dstFormat==IMGFMT_YV12)
+                  || (isPlanarYUV(srcFormat) && isGray(dstFormat))
+                  || (isPlanarYUV(dstFormat) && isGray(srcFormat))
+                 )
+               {
+                       c->swScale= simpleCopy;
+
+                       if(flags&SWS_PRINT_INFO)
+                               MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 
+                                       vo_format_name(srcFormat), vo_format_name(dstFormat));
+                       return c;
+               }
+               
+               if( srcFormat==IMGFMT_YVU9 && (dstFormat==IMGFMT_YV12 || dstFormat==IMGFMT_I420) )
+               {
+                       c->swScale= yvu9toyv12Wrapper;
+
+                       if(flags&SWS_PRINT_INFO)
+                               MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 
+                                       vo_format_name(srcFormat), vo_format_name(dstFormat));
+                       return c;
+               }
+
+               /* bgr24toYV12 */
+               if(srcFormat==IMGFMT_BGR24 && dstFormat==IMGFMT_YV12)
+                       c->swScale= bgr24toyv12Wrapper;
+               
+               /* rgb/bgr -> rgb/bgr (no dither needed forms) */
+               if(   (isBGR(srcFormat) || isRGB(srcFormat))
+                  && (isBGR(dstFormat) || isRGB(dstFormat)) 
+                  && !needsDither)
+                       c->swScale= rgb2rgbWrapper;
+
+               /* LQ converters if -sws 0 or -sws 4*/
+               if(c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){
+                       /* rgb/bgr -> rgb/bgr (dither needed forms) */
+                       if(  (isBGR(srcFormat) || isRGB(srcFormat))
+                         && (isBGR(dstFormat) || isRGB(dstFormat)) 
+                         && needsDither)
+                               c->swScale= rgb2rgbWrapper;
+               }
+
+               if(c->swScale){
+                       if(flags&SWS_PRINT_INFO)
+                               MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 
+                                       vo_format_name(srcFormat), vo_format_name(dstFormat));
+                       return c;
+               }
+       }
+
        if(cpuCaps.hasMMX2)
        {
                c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;
                if(!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))
                {
                        if(flags&SWS_PRINT_INFO)
-                               fprintf(stderr, "SwScaler: output Width is not a multiple of 32 -> no MMX2 scaler\n");
+                               MSG_INFO("SwScaler: output Width is not a multiple of 32 -> no MMX2 scaler\n");
                }
        }
        else
                c->canMMX2BeUsed=0;
 
+       c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;
+       c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;
+
        // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst
        // but only for the FAST_BILINEAR mode otherwise do correct scaling
        // n-2 is the last chrominance sample available
@@ -1028,38 +2062,43 @@ SwsContext *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH,
        // first and last pixel
        if(flags&SWS_FAST_BILINEAR)
        {
-               if(c->canMMX2BeUsed)    c->lumXInc+= 20;
+               if(c->canMMX2BeUsed)
+               {
+                       c->lumXInc+= 20;
+                       c->chrXInc+= 20;
+               }
                //we dont use the x86asm scaler if mmx is available
-               else if(cpuCaps.hasMMX) c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
+               else if(cpuCaps.hasMMX)
+               {
+                       c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
+                       c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;
+               }
        }
 
-       /* set chrXInc & chrDstW */
-       if((flags&SWS_FULL_UV_IPOL) && dstFormat!=IMGFMT_YV12)
-               c->chrXInc= c->lumXInc>>1, c->chrDstW= dstW;
-       else
-               c->chrXInc= c->lumXInc,    c->chrDstW= (dstW+1)>>1;
-
-       /* set chrYInc & chrDstH */
-       if(dstFormat==IMGFMT_YV12)      c->chrYInc= c->lumYInc,    c->chrDstH= (dstH+1)>>1;
-       else                            c->chrYInc= c->lumYInc>>1, c->chrDstH= dstH;
-
        /* precalculate horizontal scaler filter coefficients */
        {
                const int filterAlign= cpuCaps.hasMMX ? 4 : 1;
 
                initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,
-                                srcW      ,       dstW, filterAlign, 1<<14, flags,
+                                srcW      ,       dstW, filterAlign, 1<<14,
+                                (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,
                                 srcFilter->lumH, dstFilter->lumH);
                initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,
-                               (srcW+1)>>1, c->chrDstW, filterAlign, 1<<14, flags,
+                                c->chrSrcW, c->chrDstW, filterAlign, 1<<14,
+                                (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
                                 srcFilter->chrH, dstFilter->chrH);
 
 #ifdef ARCH_X86
 // cant downscale !!!
                if(c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))
                {
-                       initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode);
-                       initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode);
+                       c->lumMmx2Filter   = (int16_t*)memalign(8, (dstW        /8+8)*sizeof(int16_t));
+                       c->chrMmx2Filter   = (int16_t*)memalign(8, (c->chrDstW  /4+8)*sizeof(int16_t));
+                       c->lumMmx2FilterPos= (int32_t*)memalign(8, (dstW      /2/8+8)*sizeof(int32_t));
+                       c->chrMmx2FilterPos= (int32_t*)memalign(8, (c->chrDstW/2/4+8)*sizeof(int32_t));
+
+                       initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);
+                       initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
                }
 #endif
        } // Init Horizontal stuff
@@ -1068,11 +2107,13 @@ SwsContext *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH,
 
        /* precalculate vertical scaler filter coefficients */
        initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,
-                       srcH      ,        dstH, 1, (1<<12)-4, flags,
+                       srcH      ,        dstH, 1, (1<<12)-4,
+                       (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,
                        srcFilter->lumV, dstFilter->lumV);
        initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,
-                       (srcH+1)>>1, c->chrDstH, 1, (1<<12)-4, flags,
-                        srcFilter->chrV, dstFilter->chrV);
+                       c->chrSrcH, c->chrDstH, 1, (1<<12)-4,
+                       (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
+                       srcFilter->chrV, dstFilter->chrV);
 
        // Calculate Buffer Sizes so that they wont run out while handling these damn slices
        c->vLumBufSize= c->vLumFilterSize;
@@ -1081,18 +2122,18 @@ SwsContext *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH,
        {
                int chrI= i*c->chrDstH / dstH;
                int nextSlice= MAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,
-                                ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<1));
-               nextSlice&= ~1; // Slices start at even boundaries
+                                ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));
+               nextSlice&= ~3; // Slices start at boundaries which are divisable through 4
                if(c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)
                        c->vLumBufSize= nextSlice - c->vLumFilterPos[i   ];
-               if(c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>1))
-                       c->vChrBufSize= (nextSlice>>1) - c->vChrFilterPos[chrI];
+               if(c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))
+                       c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];
        }
 
        // allocate pixbufs (we use dynamic allocation because otherwise we would need to
-       // allocate several megabytes to handle all possible cases)
        c->lumPixBuf= (int16_t**)memalign(4, c->vLumBufSize*2*sizeof(int16_t*));
        c->chrPixBuf= (int16_t**)memalign(4, c->vChrBufSize*2*sizeof(int16_t*));
+       //Note we need at least one pixel more at the end because of the mmx code (just in case someone wanna replace the 4000/8000)
        for(i=0; i<c->vLumBufSize; i++)
                c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= (uint16_t*)memalign(8, 4000);
        for(i=0; i<c->vChrBufSize; i++)
@@ -1120,38 +2161,42 @@ SwsContext *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH,
        if(flags&SWS_PRINT_INFO)
        {
 #ifdef DITHER1XBPP
-               char *dither= cpuCaps.hasMMX ? " dithered" : "";
+               char *dither= " dithered";
+#else
+               char *dither= "";
 #endif
                if(flags&SWS_FAST_BILINEAR)
-                       fprintf(stderr, "\nSwScaler: FAST_BILINEAR scaler ");
+                       MSG_INFO("\nSwScaler: FAST_BILINEAR scaler, ");
                else if(flags&SWS_BILINEAR)
-                       fprintf(stderr, "\nSwScaler: BILINEAR scaler ");
+                       MSG_INFO("\nSwScaler: BILINEAR scaler, ");
                else if(flags&SWS_BICUBIC)
-                       fprintf(stderr, "\nSwScaler: BICUBIC scaler ");
+                       MSG_INFO("\nSwScaler: BICUBIC scaler, ");
+               else if(flags&SWS_X)
+                       MSG_INFO("\nSwScaler: Experimental scaler, ");
+               else if(flags&SWS_POINT)
+                       MSG_INFO("\nSwScaler: Nearest Neighbor / POINT scaler, ");
+               else if(flags&SWS_AREA)
+                       MSG_INFO("\nSwScaler: Area Averageing scaler, ");
+               else if(flags&SWS_BICUBLIN)
+                       MSG_INFO("\nSwScaler: luma BICUBIC / chroma BILINEAR, ");
                else
-                       fprintf(stderr, "\nSwScaler: ehh flags invalid?! ");
+                       MSG_INFO("\nSwScaler: ehh flags invalid?! ");
 
-               if(dstFormat==IMGFMT_BGR15)
-                       fprintf(stderr, "with%s BGR15 output ", dither);
-               else if(dstFormat==IMGFMT_BGR16)
-                       fprintf(stderr, "with%s BGR16 output ", dither);
-               else if(dstFormat==IMGFMT_BGR24)
-                       fprintf(stderr, "with BGR24 output ");
-               else if(dstFormat==IMGFMT_BGR32)
-                       fprintf(stderr, "with BGR32 output ");
-               else if(dstFormat==IMGFMT_YV12)
-                       fprintf(stderr, "with YV12 output ");
+               if(dstFormat==IMGFMT_BGR15 || dstFormat==IMGFMT_BGR16)
+                       MSG_INFO("from %s to%s %s ", 
+                               vo_format_name(srcFormat), dither, vo_format_name(dstFormat));
                else
-                       fprintf(stderr, "without output ");
+                       MSG_INFO("from %s to %s ", 
+                               vo_format_name(srcFormat), vo_format_name(dstFormat));
 
                if(cpuCaps.hasMMX2)
-                       fprintf(stderr, "using MMX2\n");
+                       MSG_INFO("using MMX2\n");
                else if(cpuCaps.has3DNow)
-                       fprintf(stderr, "using 3DNOW\n");
+                       MSG_INFO("using 3DNOW\n");
                else if(cpuCaps.hasMMX)
-                       fprintf(stderr, "using MMX\n");
+                       MSG_INFO("using MMX\n");
                else
-                       fprintf(stderr, "using C\n");
+                       MSG_INFO("using C\n");
        }
 
        if((flags & SWS_PRINT_INFO) && verbose)
@@ -1159,62 +2204,74 @@ SwsContext *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH,
                if(cpuCaps.hasMMX)
                {
                        if(c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))
-                               printf("SwScaler: using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
+                               MSG_V("SwScaler: using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
                        else
                        {
                                if(c->hLumFilterSize==4)
-                                       printf("SwScaler: using 4-tap MMX scaler for horizontal luminance scaling\n");
+                                       MSG_V("SwScaler: using 4-tap MMX scaler for horizontal luminance scaling\n");
                                else if(c->hLumFilterSize==8)
-                                       printf("SwScaler: using 8-tap MMX scaler for horizontal luminance scaling\n");
+                                       MSG_V("SwScaler: using 8-tap MMX scaler for horizontal luminance scaling\n");
                                else
-                                       printf("SwScaler: using n-tap MMX scaler for horizontal luminance scaling\n");
+                                       MSG_V("SwScaler: using n-tap MMX scaler for horizontal luminance scaling\n");
 
                                if(c->hChrFilterSize==4)
-                                       printf("SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling\n");
+                                       MSG_V("SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling\n");
                                else if(c->hChrFilterSize==8)
-                                       printf("SwScaler: using 8-tap MMX scaler for horizontal chrominance scaling\n");
+                                       MSG_V("SwScaler: using 8-tap MMX scaler for horizontal chrominance scaling\n");
                                else
-                                       printf("SwScaler: using n-tap MMX scaler for horizontal chrominance scaling\n");
+                                       MSG_V("SwScaler: using n-tap MMX scaler for horizontal chrominance scaling\n");
                        }
                }
                else
                {
 #ifdef ARCH_X86
-                       printf("SwScaler: using X86-Asm scaler for horizontal scaling\n");
+                       MSG_V("SwScaler: using X86-Asm scaler for horizontal scaling\n");
 #else
                        if(flags & SWS_FAST_BILINEAR)
-                               printf("SwScaler: using FAST_BILINEAR C scaler for horizontal scaling\n");
+                               MSG_V("SwScaler: using FAST_BILINEAR C scaler for horizontal scaling\n");
                        else
-                               printf("SwScaler: using C scaler for horizontal scaling\n");
+                               MSG_V("SwScaler: using C scaler for horizontal scaling\n");
 #endif
                }
-               if(dstFormat==IMGFMT_YV12)
+               if(isPlanarYUV(dstFormat))
                {
                        if(c->vLumFilterSize==1)
-                               printf("SwScaler: using 1-tap %s \"scaler\" for vertical scaling (YV12)\n", cpuCaps.hasMMX ? "MMX" : "C");
+                               MSG_V("SwScaler: using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", cpuCaps.hasMMX ? "MMX" : "C");
                        else
-                               printf("SwScaler: using n-tap %s scaler for vertical scaling (YV12)\n", cpuCaps.hasMMX ? "MMX" : "C");
+                               MSG_V("SwScaler: using n-tap %s scaler for vertical scaling (YV12 like)\n", cpuCaps.hasMMX ? "MMX" : "C");
                }
                else
                {
                        if(c->vLumFilterSize==1 && c->vChrFilterSize==2)
-                               printf("SwScaler: using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
+                               MSG_V("SwScaler: using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
                                       "SwScaler:       2-tap scaler for vertical chrominance scaling (BGR)\n",cpuCaps.hasMMX ? "MMX" : "C");
                        else if(c->vLumFilterSize==2 && c->vChrFilterSize==2)
-                               printf("SwScaler: using 2-tap linear %s scaler for vertical scaling (BGR)\n", cpuCaps.hasMMX ? "MMX" : "C");
+                               MSG_V("SwScaler: using 2-tap linear %s scaler for vertical scaling (BGR)\n", cpuCaps.hasMMX ? "MMX" : "C");
                        else
-                               printf("SwScaler: using n-tap %s scaler for vertical scaling (BGR)\n", cpuCaps.hasMMX ? "MMX" : "C");
+                               MSG_V("SwScaler: using n-tap %s scaler for vertical scaling (BGR)\n", cpuCaps.hasMMX ? "MMX" : "C");
                }
 
                if(dstFormat==IMGFMT_BGR24)
-                       printf("SwScaler: using %s YV12->BGR24 Converter\n",
+                       MSG_V("SwScaler: using %s YV12->BGR24 Converter\n",
                                cpuCaps.hasMMX2 ? "MMX2" : (cpuCaps.hasMMX ? "MMX" : "C"));
-               else
-                       printf("SwScaler: using %s YV12->BGR Converter\n", cpuCaps.hasMMX ? "MMX" : "C");//FIXME print format
+               else if(dstFormat==IMGFMT_BGR32)
+                       MSG_V("SwScaler: using %s YV12->BGR32 Converter\n", cpuCaps.hasMMX ? "MMX" : "C");
+               else if(dstFormat==IMGFMT_BGR16)
+                       MSG_V("SwScaler: using %s YV12->BGR16 Converter\n", cpuCaps.hasMMX ? "MMX" : "C");
+               else if(dstFormat==IMGFMT_BGR15)
+                       MSG_V("SwScaler: using %s YV12->BGR15 Converter\n", cpuCaps.hasMMX ? "MMX" : "C");
 
-               printf("SwScaler: %dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
+               MSG_V("SwScaler: %dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
+       }
+       if((flags & SWS_PRINT_INFO) && verbose>1)
+       {
+               MSG_DBG2("SwScaler:Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
+                       c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
+               MSG_DBG2("SwScaler:Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
+                       c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);
        }
 
+       c->swScale= swScale;
        return c;
 }
 
@@ -1244,6 +2301,21 @@ SwsVector *getGaussianVec(double variance, double quality){
        return vec;
 }
 
+SwsVector *getConstVec(double c, int length){
+       int i;
+       double *coeff= memalign(sizeof(double), length*sizeof(double));
+       SwsVector *vec= malloc(sizeof(SwsVector));
+
+       vec->coeff= coeff;
+       vec->length= length;
+
+       for(i=0; i<length; i++)
+               coeff[i]= c;
+
+       return vec;
+}
+
+
 SwsVector *getIdentityVec(void){
        double *coeff= memalign(sizeof(double), sizeof(double));
        SwsVector *vec= malloc(sizeof(SwsVector));
@@ -1336,7 +2408,7 @@ static SwsVector *diffVec(SwsVector *a, SwsVector *b){
 static SwsVector *getShiftedVec(SwsVector *a, int shift){
        int length= a->length + ABS(shift)*2;
        double *coeff= memalign(sizeof(double), length*sizeof(double));
-       int i, j;
+       int i;
        SwsVector *vec= malloc(sizeof(SwsVector));
 
        vec->coeff= coeff;
@@ -1414,9 +2486,9 @@ void printVec(SwsVector *a){
        for(i=0; i<a->length; i++)
        {
                int x= (int)((a->coeff[i]-min)*60.0/range +0.5);
-               printf("%1.3f ", a->coeff[i]);
-               for(;x>0; x--) printf(" ");
-               printf("|\n");
+               MSG_DBG2("%1.3f ", a->coeff[i]);
+               for(;x>0; x--) MSG_DBG2(" ");
+               MSG_DBG2("|\n");
        }
 }
 
@@ -1430,12 +2502,11 @@ void freeVec(SwsVector *a){
 
 void freeSwsContext(SwsContext *c){
        int i;
-
        if(!c) return;
 
        if(c->lumPixBuf)
        {
-               for(i=0; i<c->vLumBufSize*2; i++)
+               for(i=0; i<c->vLumBufSize; i++)
                {
                        if(c->lumPixBuf[i]) free(c->lumPixBuf[i]);
                        c->lumPixBuf[i]=NULL;
@@ -1446,7 +2517,7 @@ void freeSwsContext(SwsContext *c){
 
        if(c->chrPixBuf)
        {
-               for(i=0; i<c->vChrBufSize*2; i++)
+               for(i=0; i<c->vChrBufSize; i++)
                {
                        if(c->chrPixBuf[i]) free(c->chrPixBuf[i]);
                        c->chrPixBuf[i]=NULL;
@@ -1478,6 +2549,17 @@ void freeSwsContext(SwsContext *c){
        if(c->chrMmxFilter) free(c->chrMmxFilter);
        c->chrMmxFilter = NULL;
 
+       if(c->lumMmx2Filter) free(c->lumMmx2Filter);
+       c->lumMmx2Filter=NULL;
+       if(c->chrMmx2Filter) free(c->chrMmx2Filter);
+       c->chrMmx2Filter=NULL;
+       if(c->lumMmx2FilterPos) free(c->lumMmx2FilterPos);
+       c->lumMmx2FilterPos=NULL;
+       if(c->chrMmx2FilterPos) free(c->chrMmx2FilterPos);
+       c->chrMmx2FilterPos=NULL;
+       if(c->yuvTable) free(c->yuvTable);
+       c->yuvTable=NULL;
+
        free(c);
 }