swscale: remove duplicate code in ppc/ subdirectory.

1 files changed, 2 insertions, 791 deletions

diff --git a/libswscale/ppc/swscale_template.c b/libswscale/ppc/swscale_template.c
index 3a569f1b78..7968177b52 100644
--- a/libswscale/ppc/swscale_template.c
+++ b/libswscale/ppc/swscale_template.c
@@ -23,69 +23,16 @@
 #include "swscale_altivec_template.c"
 #endif
 
+#if COMPILE_TEMPLATE_ALTIVEC
 static inline void RENAME(yuv2yuvX)(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize, const int16_t **alpSrc,
                                     uint8_t *dest, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, long dstW, long chrDstW)
 {
-#if COMPILE_TEMPLATE_ALTIVEC
     yuv2yuvX_altivec_real(lumFilter, lumSrc, lumFilterSize,
                           chrFilter, chrSrc, chrFilterSize,
                           dest, uDest, vDest, dstW, chrDstW);
-#else //COMPILE_TEMPLATE_ALTIVEC
-    yuv2yuvXinC(lumFilter, lumSrc, lumFilterSize,
-                chrFilter, chrSrc, chrFilterSize,
-                alpSrc, dest, uDest, vDest, aDest, dstW, chrDstW);
-#endif //!COMPILE_TEMPLATE_ALTIVEC
-}
-
-static inline void RENAME(yuv2nv12X)(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
-                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
-                                     uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, enum PixelFormat dstFormat)
-{
-    yuv2nv12XinC(lumFilter, lumSrc, lumFilterSize,
-                 chrFilter, chrSrc, chrFilterSize,
-                 dest, uDest, dstW, chrDstW, dstFormat);
 }
 
-static inline void RENAME(yuv2yuv1)(SwsContext *c, const int16_t *lumSrc, const int16_t *chrSrc, const int16_t *alpSrc,
-                                    uint8_t *dest, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, long dstW, long chrDstW)
-{
-    int i;
-    for (i=0; i<dstW; i++) {
-        int val= (lumSrc[i]+64)>>7;
-
-        if (val&256) {
-            if (val<0) val=0;
-            else       val=255;
-        }
-
-        dest[i]= val;
-    }
-
-    if (uDest)
-        for (i=0; i<chrDstW; i++) {
-            int u=(chrSrc[i       ]+64)>>7;
-            int v=(chrSrc[i + VOFW]+64)>>7;
-
-            if ((u|v)&256) {
-                if (u<0)        u=0;
-                else if (u>255) u=255;
-                if (v<0)        v=0;
-                else if (v>255) v=255;
-            }
-
-            uDest[i]= u;
-            vDest[i]= v;
-        }
-
-    if (CONFIG_SWSCALE_ALPHA && aDest)
-        for (i=0; i<dstW; i++) {
-            int val= (alpSrc[i]+64)>>7;
-            aDest[i]= av_clip_uint8(val);
-        }
-}
-
-
 /**
  * vertical scale YV12 to RGB
  */
@@ -93,7 +40,6 @@ static inline void RENAME(yuv2packedX)(SwsContext *c, const int16_t *lumFilter,
                                        const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
                                        const int16_t **alpSrc, uint8_t *dest, long dstW, long dstY)
 {
-#if COMPILE_TEMPLATE_ALTIVEC
     /* The following list of supported dstFormat values should
        match what's found in the body of ff_yuv2packedX_altivec() */
     if (!(c->flags & SWS_BITEXACT) && !c->alpPixBuf &&
@@ -104,751 +50,16 @@ static inline void RENAME(yuv2packedX)(SwsContext *c, const int16_t *lumFilter,
                                    chrFilter, chrSrc, chrFilterSize,
                                    dest, dstW, dstY);
     else
-#endif
         yuv2packedXinC(c, lumFilter, lumSrc, lumFilterSize,
                        chrFilter, chrSrc, chrFilterSize,
                        alpSrc, dest, dstW, dstY);
 }
-
-/**
- * vertical bilinear scale YV12 to RGB
- */
-static inline void RENAME(yuv2packed2)(SwsContext *c, const uint16_t *buf0, const uint16_t *buf1, const uint16_t *uvbuf0, const uint16_t *uvbuf1,
-                          const uint16_t *abuf0, const uint16_t *abuf1, uint8_t *dest, int dstW, int yalpha, int uvalpha, int y)
-{
-    int  yalpha1=4095- yalpha;
-    int uvalpha1=4095-uvalpha;
-    int i;
-
-    YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB2_C, YSCALE_YUV_2_PACKED2_C(void,0), YSCALE_YUV_2_GRAY16_2_C, YSCALE_YUV_2_MONO2_C)
-}
-
-/**
- * YV12 to RGB without scaling or interpolating
- */
-static inline void RENAME(yuv2packed1)(SwsContext *c, const uint16_t *buf0, const uint16_t *uvbuf0, const uint16_t *uvbuf1,
-                          const uint16_t *abuf0, uint8_t *dest, int dstW, int uvalpha, enum PixelFormat dstFormat, int flags, int y)
-{
-    const int yalpha1=0;
-    int i;
-
-    const uint16_t *buf1= buf0; //FIXME needed for RGB1/BGR1
-    const int yalpha= 4096; //FIXME ...
-
-    if (flags&SWS_FULL_CHR_H_INT) {
-        c->yuv2packed2(c, buf0, buf0, uvbuf0, uvbuf1, abuf0, abuf0, dest, dstW, 0, uvalpha, y);
-        return;
-    }
-
-    if (uvalpha < 2048) {
-        YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1_C, YSCALE_YUV_2_PACKED1_C(void,0), YSCALE_YUV_2_GRAY16_1_C, YSCALE_YUV_2_MONO2_C)
-    } else {
-        YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1B_C, YSCALE_YUV_2_PACKED1B_C(void,0), YSCALE_YUV_2_GRAY16_1_C, YSCALE_YUV_2_MONO2_C)
-    }
-}
-
-//FIXME yuy2* can read up to 7 samples too much
-
-static inline void RENAME(yuy2ToY)(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
-{
-    int i;
-    for (i=0; i<width; i++)
-        dst[i]= src[2*i];
-}
-
-static inline void RENAME(yuy2ToUV)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
-{
-    int i;
-    for (i=0; i<width; i++) {
-        dstU[i]= src1[4*i + 1];
-        dstV[i]= src1[4*i + 3];
-    }
-    assert(src1 == src2);
-}
-
-static inline void RENAME(LEToUV)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
-{
-    int i;
-    for (i=0; i<width; i++) {
-        dstU[i]= src1[2*i + 1];
-        dstV[i]= src2[2*i + 1];
-    }
-}
-
-/* This is almost identical to the previous, end exists only because
- * yuy2ToY/UV)(dst, src+1, ...) would have 100% unaligned accesses. */
-static inline void RENAME(uyvyToY)(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
-{
-    int i;
-    for (i=0; i<width; i++)
-        dst[i]= src[2*i+1];
-}
-
-static inline void RENAME(uyvyToUV)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
-{
-    int i;
-    for (i=0; i<width; i++) {
-        dstU[i]= src1[4*i + 0];
-        dstV[i]= src1[4*i + 2];
-    }
-    assert(src1 == src2);
-}
-
-static inline void RENAME(BEToUV)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
-{
-    int i;
-    for (i=0; i<width; i++) {
-        dstU[i]= src1[2*i];
-        dstV[i]= src2[2*i];
-    }
-}
-
-static inline void RENAME(nvXXtoUV)(uint8_t *dst1, uint8_t *dst2,
-                                    const uint8_t *src, long width)
-{
-    int i;
-    for (i = 0; i < width; i++) {
-        dst1[i] = src[2*i+0];
-        dst2[i] = src[2*i+1];
-    }
-}
-
-static inline void RENAME(nv12ToUV)(uint8_t *dstU, uint8_t *dstV,
-                                    const uint8_t *src1, const uint8_t *src2,
-                                    long width, uint32_t *unused)
-{
-    RENAME(nvXXtoUV)(dstU, dstV, src1, width);
-}
-
-static inline void RENAME(nv21ToUV)(uint8_t *dstU, uint8_t *dstV,
-                                    const uint8_t *src1, const uint8_t *src2,
-                                    long width, uint32_t *unused)
-{
-    RENAME(nvXXtoUV)(dstV, dstU, src1, width);
-}
-
-
-static inline void RENAME(bgr24ToY)(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
-{
-    int i;
-    for (i=0; i<width; i++) {
-        int b= src[i*3+0];
-        int g= src[i*3+1];
-        int r= src[i*3+2];
-
-        dst[i]= ((RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
-    }
-}
-
-static inline void RENAME(bgr24ToUV)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
-{
-    int i;
-    for (i=0; i<width; i++) {
-        int b= src1[3*i + 0];
-        int g= src1[3*i + 1];
-        int r= src1[3*i + 2];
-
-        dstU[i]= (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT;
-        dstV[i]= (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT;
-    }
-    assert(src1 == src2);
-}
-
-static inline void RENAME(bgr24ToUV_half)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
-{
-    int i;
-    for (i=0; i<width; i++) {
-        int b= src1[6*i + 0] + src1[6*i + 3];
-        int g= src1[6*i + 1] + src1[6*i + 4];
-        int r= src1[6*i + 2] + src1[6*i + 5];
-
-        dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT))>>(RGB2YUV_SHIFT+1);
-        dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT))>>(RGB2YUV_SHIFT+1);
-    }
-    assert(src1 == src2);
-}
-
-static inline void RENAME(rgb24ToY)(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
-{
-    int i;
-    for (i=0; i<width; i++) {
-        int r= src[i*3+0];
-        int g= src[i*3+1];
-        int b= src[i*3+2];
-
-        dst[i]= ((RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
-    }
-}
-
-static inline void RENAME(rgb24ToUV)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
-{
-    int i;
-    assert(src1==src2);
-    for (i=0; i<width; i++) {
-        int r= src1[3*i + 0];
-        int g= src1[3*i + 1];
-        int b= src1[3*i + 2];
-
-        dstU[i]= (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT;
-        dstV[i]= (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT;
-    }
-}
-
-static inline void RENAME(rgb24ToUV_half)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
-{
-    int i;
-    assert(src1==src2);
-    for (i=0; i<width; i++) {
-        int r= src1[6*i + 0] + src1[6*i + 3];
-        int g= src1[6*i + 1] + src1[6*i + 4];
-        int b= src1[6*i + 2] + src1[6*i + 5];
-
-        dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT))>>(RGB2YUV_SHIFT+1);
-        dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT))>>(RGB2YUV_SHIFT+1);
-    }
-}
-
-
-// bilinear / bicubic scaling
-static inline void RENAME(hScale)(int16_t *dst, int dstW, const uint8_t *src, int srcW, int xInc,
-                                  const int16_t *filter, const int16_t *filterPos, long filterSize)
-{
-#if COMPILE_TEMPLATE_ALTIVEC
-    hScale_altivec_real(dst, dstW, src, srcW, xInc, filter, filterPos, filterSize);
-#else
-    int i;
-    for (i=0; i<dstW; i++) {
-        int j;
-        int srcPos= filterPos[i];
-        int val=0;
-        //printf("filterPos: %d\n", filterPos[i]);
-        for (j=0; j<filterSize; j++) {
-            //printf("filter: %d, src: %d\n", filter[i], src[srcPos + j]);
-            val += ((int)src[srcPos + j])*filter[filterSize*i + j];
-        }
-        //filter += hFilterSize;
-        dst[i] = FFMIN(val>>7, (1<<15)-1); // the cubic equation does overflow ...
-        //dst[i] = val>>7;
-    }
-#endif /* COMPILE_TEMPLATE_ALTIVEC */
-}
-
-//FIXME all pal and rgb srcFormats could do this convertion as well
-//FIXME all scalers more complex than bilinear could do half of this transform
-static void RENAME(chrRangeToJpeg)(uint16_t *dst, int width)
-{
-    int i;
-    for (i = 0; i < width; i++) {
-        dst[i     ] = (FFMIN(dst[i     ],30775)*4663 - 9289992)>>12; //-264
-        dst[i+VOFW] = (FFMIN(dst[i+VOFW],30775)*4663 - 9289992)>>12; //-264
-    }
-}
-static void RENAME(chrRangeFromJpeg)(uint16_t *dst, int width)
-{
-    int i;
-    for (i = 0; i < width; i++) {
-        dst[i     ] = (dst[i     ]*1799 + 4081085)>>11; //1469
-        dst[i+VOFW] = (dst[i+VOFW]*1799 + 4081085)>>11; //1469
-    }
-}
-static void RENAME(lumRangeToJpeg)(uint16_t *dst, int width)
-{
-    int i;
-    for (i = 0; i < width; i++)
-        dst[i] = (FFMIN(dst[i],30189)*19077 - 39057361)>>14;
-}
-static void RENAME(lumRangeFromJpeg)(uint16_t *dst, int width)
-{
-    int i;
-    for (i = 0; i < width; i++)
-        dst[i] = (dst[i]*14071 + 33561947)>>14;
-}
-
-static inline void RENAME(hyscale_fast)(SwsContext *c, int16_t *dst,
-                                        long dstWidth, const uint8_t *src, int srcW,
-                                        int xInc)
-{
-    int i;
-    unsigned int xpos=0;
-    for (i=0;i<dstWidth;i++) {
-        register unsigned int xx=xpos>>16;
-        register unsigned int xalpha=(xpos&0xFFFF)>>9;
-        dst[i]= (src[xx]<<7) + (src[xx+1] - src[xx])*xalpha;
-        xpos+=xInc;
-    }
-}
-
-      // *** horizontal scale Y line to temp buffer
-static inline void RENAME(hyscale)(SwsContext *c, uint16_t *dst, long dstWidth, const uint8_t *src, int srcW, int xInc,
-                                   const int16_t *hLumFilter,
-                                   const int16_t *hLumFilterPos, int hLumFilterSize,
-                                   uint8_t *formatConvBuffer,
-                                   uint32_t *pal, int isAlpha)
-{
-    void (*toYV12)(uint8_t *, const uint8_t *, long, uint32_t *) = isAlpha ? c->alpToYV12 : c->lumToYV12;
-    void (*convertRange)(uint16_t *, int) = isAlpha ? NULL : c->lumConvertRange;
-
-    src += isAlpha ? c->alpSrcOffset : c->lumSrcOffset;
-
-    if (toYV12) {
-        toYV12(formatConvBuffer, src, srcW, pal);
-        src= formatConvBuffer;
-    }
-
-    if (!c->hyscale_fast) {
-        c->hScale(dst, dstWidth, src, srcW, xInc, hLumFilter, hLumFilterPos, hLumFilterSize);
-    } else { // fast bilinear upscale / crap downscale
-        c->hyscale_fast(c, dst, dstWidth, src, srcW, xInc);
-    }
-
-    if (convertRange)
-        convertRange(dst, dstWidth);
-}
-
-static inline void RENAME(hcscale_fast)(SwsContext *c, int16_t *dst,
-                                        long dstWidth, const uint8_t *src1,
-                                        const uint8_t *src2, int srcW, int xInc)
-{
-    int i;
-    unsigned int xpos=0;
-    for (i=0;i<dstWidth;i++) {
-        register unsigned int xx=xpos>>16;
-        register unsigned int xalpha=(xpos&0xFFFF)>>9;
-        dst[i]=(src1[xx]*(xalpha^127)+src1[xx+1]*xalpha);
-        dst[i+VOFW]=(src2[xx]*(xalpha^127)+src2[xx+1]*xalpha);
-        /* slower
-        dst[i]= (src1[xx]<<7) + (src1[xx+1] - src1[xx])*xalpha;
-        dst[i+VOFW]=(src2[xx]<<7) + (src2[xx+1] - src2[xx])*xalpha;
-        */
-        xpos+=xInc;
-    }
-}
-
-inline static void RENAME(hcscale)(SwsContext *c, uint16_t *dst, long dstWidth, const uint8_t *src1, const uint8_t *src2,
-                                   int srcW, int xInc, const int16_t *hChrFilter,
-                                   const int16_t *hChrFilterPos, int hChrFilterSize,
-                                   uint8_t *formatConvBuffer,
-                                   uint32_t *pal)
-{
-
-    src1 += c->chrSrcOffset;
-    src2 += c->chrSrcOffset;
-
-    if (c->chrToYV12) {
-        c->chrToYV12(formatConvBuffer, formatConvBuffer+VOFW, src1, src2, srcW, pal);
-        src1= formatConvBuffer;
-        src2= formatConvBuffer+VOFW;
-    }
-
-    if (!c->hcscale_fast) {
-        c->hScale(dst     , dstWidth, src1, srcW, xInc, hChrFilter, hChrFilterPos, hChrFilterSize);
-        c->hScale(dst+VOFW, dstWidth, src2, srcW, xInc, hChrFilter, hChrFilterPos, hChrFilterSize);
-    } else { // fast bilinear upscale / crap downscale
-        c->hcscale_fast(c, dst, dstWidth, src1, src2, srcW, xInc);
-    }
-
-    if (c->chrConvertRange)
-        c->chrConvertRange(dst, dstWidth);
-}
-
-#define DEBUG_SWSCALE_BUFFERS 0
-#define DEBUG_BUFFERS(...) if (DEBUG_SWSCALE_BUFFERS) av_log(c, AV_LOG_DEBUG, __VA_ARGS__)
-
-static int RENAME(swScale)(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
-                           int srcSliceH, uint8_t* dst[], int dstStride[])
-{
-    /* load a few things into local vars to make the code more readable? and faster */
-    const int srcW= c->srcW;
-    const int dstW= c->dstW;
-    const int dstH= c->dstH;
-    const int chrDstW= c->chrDstW;
-    const int chrSrcW= c->chrSrcW;
-    const int lumXInc= c->lumXInc;
-    const int chrXInc= c->chrXInc;
-    const enum PixelFormat dstFormat= c->dstFormat;
-    const int flags= c->flags;
-    int16_t *vLumFilterPos= c->vLumFilterPos;
-    int16_t *vChrFilterPos= c->vChrFilterPos;
-    int16_t *hLumFilterPos= c->hLumFilterPos;
-    int16_t *hChrFilterPos= c->hChrFilterPos;
-    int16_t *vLumFilter= c->vLumFilter;
-    int16_t *vChrFilter= c->vChrFilter;
-    int16_t *hLumFilter= c->hLumFilter;
-    int16_t *hChrFilter= c->hChrFilter;
-    int32_t *lumMmxFilter= c->lumMmxFilter;
-    int32_t *chrMmxFilter= c->chrMmxFilter;
-    int32_t av_unused *alpMmxFilter= c->alpMmxFilter;
-    const int vLumFilterSize= c->vLumFilterSize;
-    const int vChrFilterSize= c->vChrFilterSize;
-    const int hLumFilterSize= c->hLumFilterSize;
-    const int hChrFilterSize= c->hChrFilterSize;
-    int16_t **lumPixBuf= c->lumPixBuf;
-    int16_t **chrPixBuf= c->chrPixBuf;
-    int16_t **alpPixBuf= c->alpPixBuf;
-    const int vLumBufSize= c->vLumBufSize;
-    const int vChrBufSize= c->vChrBufSize;
-    uint8_t *formatConvBuffer= c->formatConvBuffer;
-    const int chrSrcSliceY= srcSliceY >> c->chrSrcVSubSample;
-    const int chrSrcSliceH= -((-srcSliceH) >> c->chrSrcVSubSample);
-    int lastDstY;
-    uint32_t *pal=c->pal_yuv;
-
-    /* vars which will change and which we need to store back in the context */
-    int dstY= c->dstY;
-    int lumBufIndex= c->lumBufIndex;
-    int chrBufIndex= c->chrBufIndex;
-    int lastInLumBuf= c->lastInLumBuf;
-    int lastInChrBuf= c->lastInChrBuf;
-
-    if (isPacked(c->srcFormat)) {
-        src[0]=
-        src[1]=
-        src[2]=
-        src[3]= src[0];
-        srcStride[0]=
-        srcStride[1]=
-        srcStride[2]=
-        srcStride[3]= srcStride[0];
-    }
-    srcStride[1]<<= c->vChrDrop;
-    srcStride[2]<<= c->vChrDrop;
-
-    DEBUG_BUFFERS("swScale() %p[%d] %p[%d] %p[%d] %p[%d] -> %p[%d] %p[%d] %p[%d] %p[%d]\n",
-                  src[0], srcStride[0], src[1], srcStride[1], src[2], srcStride[2], src[3], srcStride[3],
-                  dst[0], dstStride[0], dst[1], dstStride[1], dst[2], dstStride[2], dst[3], dstStride[3]);
-    DEBUG_BUFFERS("srcSliceY: %d srcSliceH: %d dstY: %d dstH: %d\n",
-                   srcSliceY,    srcSliceH,    dstY,    dstH);
-    DEBUG_BUFFERS("vLumFilterSize: %d vLumBufSize: %d vChrFilterSize: %d vChrBufSize: %d\n",
-                   vLumFilterSize,    vLumBufSize,    vChrFilterSize,    vChrBufSize);
-
-    if (dstStride[0]%8 !=0 || dstStride[1]%8 !=0 || dstStride[2]%8 !=0 || dstStride[3]%8 != 0) {
-        static int warnedAlready=0; //FIXME move this into the context perhaps
-        if (flags & SWS_PRINT_INFO && !warnedAlready) {
-            av_log(c, AV_LOG_WARNING, "Warning: dstStride is not aligned!\n"
-                   "         ->cannot do aligned memory accesses anymore\n");
-            warnedAlready=1;
-        }
-    }
-
-    /* Note the user might start scaling the picture in the middle so this
-       will not get executed. This is not really intended but works
-       currently, so people might do it. */
-    if (srcSliceY ==0) {
-        lumBufIndex=-1;
-        chrBufIndex=-1;
-        dstY=0;
-        lastInLumBuf= -1;
-        lastInChrBuf= -1;
-    }
-
-    lastDstY= dstY;
-
-    for (;dstY < dstH; dstY++) {
-        unsigned char *dest =dst[0]+dstStride[0]*dstY;
-        const int chrDstY= dstY>>c->chrDstVSubSample;
-        unsigned char *uDest=dst[1]+dstStride[1]*chrDstY;
-        unsigned char *vDest=dst[2]+dstStride[2]*chrDstY;
-        unsigned char *aDest=(CONFIG_SWSCALE_ALPHA && alpPixBuf) ? dst[3]+dstStride[3]*dstY : NULL;
-
-        const int firstLumSrcY= vLumFilterPos[dstY]; //First line needed as input
-        const int firstLumSrcY2= vLumFilterPos[FFMIN(dstY | ((1<<c->chrDstVSubSample) - 1), dstH-1)];
-        const int firstChrSrcY= vChrFilterPos[chrDstY]; //First line needed as input
-        int lastLumSrcY= firstLumSrcY + vLumFilterSize -1; // Last line needed as input
-        int lastLumSrcY2=firstLumSrcY2+ vLumFilterSize -1; // Last line needed as input
-        int lastChrSrcY= firstChrSrcY + vChrFilterSize -1; // Last line needed as input
-        int enough_lines;
-
-        //handle holes (FAST_BILINEAR & weird filters)
-        if (firstLumSrcY > lastInLumBuf) lastInLumBuf= firstLumSrcY-1;
-        if (firstChrSrcY > lastInChrBuf) lastInChrBuf= firstChrSrcY-1;
-        assert(firstLumSrcY >= lastInLumBuf - vLumBufSize + 1);
-        assert(firstChrSrcY >= lastInChrBuf - vChrBufSize + 1);
-
-        DEBUG_BUFFERS("dstY: %d\n", dstY);
-        DEBUG_BUFFERS("\tfirstLumSrcY: %d lastLumSrcY: %d lastInLumBuf: %d\n",
-                         firstLumSrcY,    lastLumSrcY,    lastInLumBuf);
-        DEBUG_BUFFERS("\tfirstChrSrcY: %d lastChrSrcY: %d lastInChrBuf: %d\n",
-                         firstChrSrcY,    lastChrSrcY,    lastInChrBuf);
-
-        // Do we have enough lines in this slice to output the dstY line
-        enough_lines = lastLumSrcY2 < srcSliceY + srcSliceH && lastChrSrcY < -((-srcSliceY - srcSliceH)>>c->chrSrcVSubSample);
-
-        if (!enough_lines) {
-            lastLumSrcY = srcSliceY + srcSliceH - 1;
-            lastChrSrcY = chrSrcSliceY + chrSrcSliceH - 1;
-            DEBUG_BUFFERS("buffering slice: lastLumSrcY %d lastChrSrcY %d\n",
-                                            lastLumSrcY, lastChrSrcY);
-        }
-
-        //Do horizontal scaling
-        while(lastInLumBuf < lastLumSrcY) {
-            const uint8_t *src1= src[0]+(lastInLumBuf + 1 - srcSliceY)*srcStride[0];
-            const uint8_t *src2= src[3]+(lastInLumBuf + 1 - srcSliceY)*srcStride[3];
-            lumBufIndex++;
-            assert(lumBufIndex < 2*vLumBufSize);
-            assert(lastInLumBuf + 1 - srcSliceY < srcSliceH);
-            assert(lastInLumBuf + 1 - srcSliceY >= 0);
-            RENAME(hyscale)(c, lumPixBuf[ lumBufIndex ], dstW, src1, srcW, lumXInc,
-                            hLumFilter, hLumFilterPos, hLumFilterSize,
-                            formatConvBuffer,
-                            pal, 0);
-            if (CONFIG_SWSCALE_ALPHA && alpPixBuf)
-                RENAME(hyscale)(c, alpPixBuf[ lumBufIndex ], dstW, src2, srcW, lumXInc,
-                                hLumFilter, hLumFilterPos, hLumFilterSize,
-                                formatConvBuffer,
-                                pal, 1);
-            lastInLumBuf++;
-            DEBUG_BUFFERS("\t\tlumBufIndex %d: lastInLumBuf: %d\n",
-                               lumBufIndex,    lastInLumBuf);
-        }
-        while(lastInChrBuf < lastChrSrcY) {
-            const uint8_t *src1= src[1]+(lastInChrBuf + 1 - chrSrcSliceY)*srcStride[1];
-            const uint8_t *src2= src[2]+(lastInChrBuf + 1 - chrSrcSliceY)*srcStride[2];
-            chrBufIndex++;
-            assert(chrBufIndex < 2*vChrBufSize);
-            assert(lastInChrBuf + 1 - chrSrcSliceY < (chrSrcSliceH));
-            assert(lastInChrBuf + 1 - chrSrcSliceY >= 0);
-            //FIXME replace parameters through context struct (some at least)
-
-            if (c->needs_hcscale)
-                RENAME(hcscale)(c, chrPixBuf[ chrBufIndex ], chrDstW, src1, src2, chrSrcW, chrXInc,
-                                hChrFilter, hChrFilterPos, hChrFilterSize,
-                                formatConvBuffer,
-                                pal);
-            lastInChrBuf++;
-            DEBUG_BUFFERS("\t\tchrBufIndex %d: lastInChrBuf: %d\n",
-                               chrBufIndex,    lastInChrBuf);
-        }
-        //wrap buf index around to stay inside the ring buffer
-        if (lumBufIndex >= vLumBufSize) lumBufIndex-= vLumBufSize;
-        if (chrBufIndex >= vChrBufSize) chrBufIndex-= vChrBufSize;
-        if (!enough_lines)
-            break; //we can't output a dstY line so let's try with the next slice
-
-        if (dstY < dstH-2) {
-            const int16_t **lumSrcPtr= (const int16_t **) lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize;
-            const int16_t **chrSrcPtr= (const int16_t **) chrPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
-            const int16_t **alpSrcPtr= (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? (const int16_t **) alpPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize : NULL;
-            if (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21) {
-                const int chrSkipMask= (1<<c->chrDstVSubSample)-1;
-                if (dstY&chrSkipMask) uDest= NULL; //FIXME split functions in lumi / chromi
-                c->yuv2nv12X(c,
-                             vLumFilter+dstY*vLumFilterSize   , lumSrcPtr, vLumFilterSize,
-                             vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
-                             dest, uDest, dstW, chrDstW, dstFormat);
-            } else if (isPlanarYUV(dstFormat) || dstFormat==PIX_FMT_GRAY8) { //YV12 like
-                const int chrSkipMask= (1<<c->chrDstVSubSample)-1;
-                if ((dstY&chrSkipMask) || isGray(dstFormat)) uDest=vDest= NULL; //FIXME split functions in lumi / chromi
-                if (is16BPS(dstFormat) || is9_OR_10BPS(dstFormat)) {
-                    yuv2yuvX16inC(
-                                  vLumFilter+dstY*vLumFilterSize   , lumSrcPtr, vLumFilterSize,
-                                  vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
-                                  alpSrcPtr, (uint16_t *) dest, (uint16_t *) uDest, (uint16_t *) vDest, (uint16_t *) aDest, dstW, chrDstW,
-                                  dstFormat);
-                } else if (vLumFilterSize == 1 && vChrFilterSize == 1) { // unscaled YV12
-                    const int16_t *lumBuf = lumSrcPtr[0];
-                    const int16_t *chrBuf= chrSrcPtr[0];
-                    const int16_t *alpBuf= (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? alpSrcPtr[0] : NULL;
-                    c->yuv2yuv1(c, lumBuf, chrBuf, alpBuf, dest, uDest, vDest, aDest, dstW, chrDstW);
-                } else { //General YV12
-                    c->yuv2yuvX(c,
-                                vLumFilter+dstY*vLumFilterSize   , lumSrcPtr, vLumFilterSize,
-                                vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
-                                alpSrcPtr, dest, uDest, vDest, aDest, dstW, chrDstW);
-                }
-            } else {
-                assert(lumSrcPtr + vLumFilterSize - 1 < lumPixBuf + vLumBufSize*2);
-                assert(chrSrcPtr + vChrFilterSize - 1 < chrPixBuf + vChrBufSize*2);
-                if (vLumFilterSize == 1 && vChrFilterSize == 2) { //unscaled RGB
-                    int chrAlpha= vChrFilter[2*dstY+1];
-                    if(flags & SWS_FULL_CHR_H_INT) {
-                        yuv2rgbXinC_full(c, //FIXME write a packed1_full function
-                                         vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize,
-                                         vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
-                                         alpSrcPtr, dest, dstW, dstY);
-                    } else {
-                        c->yuv2packed1(c, *lumSrcPtr, *chrSrcPtr, *(chrSrcPtr+1),
-                                       alpPixBuf ? *alpSrcPtr : NULL,
-                                       dest, dstW, chrAlpha, dstFormat, flags, dstY);
-                    }
-                } else if (vLumFilterSize == 2 && vChrFilterSize == 2) { //bilinear upscale RGB
-                    int lumAlpha= vLumFilter[2*dstY+1];
-                    int chrAlpha= vChrFilter[2*dstY+1];
-                    lumMmxFilter[2]=
-                    lumMmxFilter[3]= vLumFilter[2*dstY   ]*0x10001;
-                    chrMmxFilter[2]=
-                    chrMmxFilter[3]= vChrFilter[2*chrDstY]*0x10001;
-                    if(flags & SWS_FULL_CHR_H_INT) {
-                        yuv2rgbXinC_full(c, //FIXME write a packed2_full function
-                                         vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize,
-                                         vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
-                                         alpSrcPtr, dest, dstW, dstY);
-                    } else {
-                        c->yuv2packed2(c, *lumSrcPtr, *(lumSrcPtr+1), *chrSrcPtr, *(chrSrcPtr+1),
-                                       alpPixBuf ? *alpSrcPtr : NULL, alpPixBuf ? *(alpSrcPtr+1) : NULL,
-                                       dest, dstW, lumAlpha, chrAlpha, dstY);
-                    }
-                } else { //general RGB
-                    if(flags & SWS_FULL_CHR_H_INT) {
-                        yuv2rgbXinC_full(c,
-                                         vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize,
-                                         vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
-                                         alpSrcPtr, dest, dstW, dstY);
-                    } else {
-                        c->yuv2packedX(c,
-                                       vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize,
-                                       vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
-                                       alpSrcPtr, dest, dstW, dstY);
-                    }
-                }
-            }
-        } else { // hmm looks like we can't use MMX here without overwriting this array's tail
-            const int16_t **lumSrcPtr= (const int16_t **)lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize;
-            const int16_t **chrSrcPtr= (const int16_t **)chrPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
-            const int16_t **alpSrcPtr= (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? (const int16_t **)alpPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize : NULL;
-            if (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21) {
-                const int chrSkipMask= (1<<c->chrDstVSubSample)-1;
-                if (dstY&chrSkipMask) uDest= NULL; //FIXME split functions in lumi / chromi
-                yuv2nv12XinC(
-                             vLumFilter+dstY*vLumFilterSize   , lumSrcPtr, vLumFilterSize,
-                             vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
-                             dest, uDest, dstW, chrDstW, dstFormat);
-            } else if (isPlanarYUV(dstFormat) || dstFormat==PIX_FMT_GRAY8) { //YV12
-                const int chrSkipMask= (1<<c->chrDstVSubSample)-1;
-                if ((dstY&chrSkipMask) || isGray(dstFormat)) uDest=vDest= NULL; //FIXME split functions in lumi / chromi
-                if (is16BPS(dstFormat) || is9_OR_10BPS(dstFormat)) {
-                    yuv2yuvX16inC(
-                                  vLumFilter+dstY*vLumFilterSize   , lumSrcPtr, vLumFilterSize,
-                                  vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
-                                  alpSrcPtr, (uint16_t *) dest, (uint16_t *) uDest, (uint16_t *) vDest, (uint16_t *) aDest, dstW, chrDstW,
-                                  dstFormat);
-                } else {
-                    yuv2yuvXinC(
-                                vLumFilter+dstY*vLumFilterSize   , lumSrcPtr, vLumFilterSize,
-                                vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
-                                alpSrcPtr, dest, uDest, vDest, aDest, dstW, chrDstW);
-                }
-            } else {
-                assert(lumSrcPtr + vLumFilterSize - 1 < lumPixBuf + vLumBufSize*2);
-                assert(chrSrcPtr + vChrFilterSize - 1 < chrPixBuf + vChrBufSize*2);
-                if(flags & SWS_FULL_CHR_H_INT) {
-                    yuv2rgbXinC_full(c,
-                                     vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize,
-                                     vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
-                                     alpSrcPtr, dest, dstW, dstY);
-                } else {
-                    yuv2packedXinC(c,
-                                   vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize,
-                                   vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
-                                   alpSrcPtr, dest, dstW, dstY);
-                }
-            }
-        }
-    }
-
-    if ((dstFormat == PIX_FMT_YUVA420P) && !alpPixBuf)
-        fillPlane(dst[3], dstStride[3], dstW, dstY-lastDstY, lastDstY, 255);
-
-    /* store changed local vars back in the context */
-    c->dstY= dstY;
-    c->lumBufIndex= lumBufIndex;
-    c->chrBufIndex= chrBufIndex;
-    c->lastInLumBuf= lastInLumBuf;
-    c->lastInChrBuf= lastInChrBuf;
-
-    return dstY - lastDstY;
-}
+#endif
 
 static void RENAME(sws_init_swScale)(SwsContext *c)
 {
     enum PixelFormat srcFormat = c->srcFormat;
 
-    c->yuv2nv12X    = RENAME(yuv2nv12X   );
-    c->yuv2yuv1     = RENAME(yuv2yuv1    );
     c->yuv2yuvX     = RENAME(yuv2yuvX    );
-    c->yuv2packed1  = RENAME(yuv2packed1 );
-    c->yuv2packed2  = RENAME(yuv2packed2 );
     c->yuv2packedX  = RENAME(yuv2packedX );
-
-    c->hScale       = RENAME(hScale      );
-
-    if (c->flags & SWS_FAST_BILINEAR)
-    {
-        c->hyscale_fast = RENAME(hyscale_fast);
-        c->hcscale_fast = RENAME(hcscale_fast);
-    }
-
-    switch(srcFormat) {
-        case PIX_FMT_YUYV422  : c->chrToYV12 = RENAME(yuy2ToUV); break;
-        case PIX_FMT_UYVY422  : c->chrToYV12 = RENAME(uyvyToUV); break;
-        case PIX_FMT_NV12     : c->chrToYV12 = RENAME(nv12ToUV); break;
-        case PIX_FMT_NV21     : c->chrToYV12 = RENAME(nv21ToUV); break;
-        case PIX_FMT_YUV420P16BE:
-        case PIX_FMT_YUV422P16BE:
-        case PIX_FMT_YUV444P16BE: c->chrToYV12 = RENAME(BEToUV); break;
-        case PIX_FMT_YUV420P16LE:
-        case PIX_FMT_YUV422P16LE:
-        case PIX_FMT_YUV444P16LE: c->chrToYV12 = RENAME(LEToUV); break;
-    }
-    if (c->chrSrcHSubSample) {
-        switch(srcFormat) {
-        case PIX_FMT_BGR24  : c->chrToYV12 = RENAME(bgr24ToUV_half); break;
-        case PIX_FMT_RGB24  : c->chrToYV12 = RENAME(rgb24ToUV_half); break;
-        }
-    } else {
-        switch(srcFormat) {
-        case PIX_FMT_BGR24  : c->chrToYV12 = RENAME(bgr24ToUV); break;
-        case PIX_FMT_RGB24  : c->chrToYV12 = RENAME(rgb24ToUV); break;
-        }
-    }
-
-    switch (srcFormat) {
-    case PIX_FMT_YUYV422  :
-    case PIX_FMT_YUV420P16BE:
-    case PIX_FMT_YUV422P16BE:
-    case PIX_FMT_YUV444P16BE:
-    case PIX_FMT_Y400A    :
-    case PIX_FMT_GRAY16BE : c->lumToYV12 = RENAME(yuy2ToY); break;
-    case PIX_FMT_UYVY422  :
-    case PIX_FMT_YUV420P16LE:
-    case PIX_FMT_YUV422P16LE:
-    case PIX_FMT_YUV444P16LE:
-    case PIX_FMT_GRAY16LE : c->lumToYV12 = RENAME(uyvyToY); break;
-    case PIX_FMT_BGR24    : c->lumToYV12 = RENAME(bgr24ToY); break;
-    case PIX_FMT_RGB24    : c->lumToYV12 = RENAME(rgb24ToY); break;
-    }
-    if (c->alpPixBuf) {
-        switch (srcFormat) {
-        case PIX_FMT_Y400A  : c->alpToYV12 = RENAME(yuy2ToY); break;
-        }
-    }
-
-    switch (srcFormat) {
-    case PIX_FMT_Y400A  :
-        c->alpSrcOffset = 1;
-        break;
-    case PIX_FMT_RGB32  :
-    case PIX_FMT_BGR32  :
-        c->alpSrcOffset = 3;
-        break;
-    case PIX_FMT_RGB48LE:
-        c->lumSrcOffset = 1;
-        c->chrSrcOffset = 1;
-        c->alpSrcOffset = 1;
-        break;
-    }
-
-    if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
-        if (c->srcRange) {
-            c->lumConvertRange = RENAME(lumRangeFromJpeg);
-            c->chrConvertRange = RENAME(chrRangeFromJpeg);
-        } else {
-            c->lumConvertRange = RENAME(lumRangeToJpeg);
-            c->chrConvertRange = RENAME(chrRangeToJpeg);
-        }
-    }
-
-    if (!(isGray(srcFormat) || isGray(c->dstFormat) ||
-          srcFormat == PIX_FMT_MONOBLACK || srcFormat == PIX_FMT_MONOWHITE))
-        c->needs_hcscale = 1;
 }