-#endif /* COMPILE_MMX2 */
-
-static SwsFunc getSwsFunc(SwsContext *c)
-{
-#if CONFIG_RUNTIME_CPUDETECT
- int flags = c->flags;
-
-#if ARCH_X86 && CONFIG_GPL
- // ordered per speed fastest first
- if (flags & SWS_CPU_CAPS_MMX2) {
- sws_init_swScale_MMX2(c);
- return swScale_MMX2;
- } else if (flags & SWS_CPU_CAPS_3DNOW) {
- sws_init_swScale_3DNow(c);
- return swScale_3DNow;
- } else if (flags & SWS_CPU_CAPS_MMX) {
- sws_init_swScale_MMX(c);
- return swScale_MMX;
- } else {
- sws_init_swScale_C(c);
- return swScale_C;
- }
-
-#else
-#if ARCH_PPC
- if (flags & SWS_CPU_CAPS_ALTIVEC) {
- sws_init_swScale_altivec(c);
- return swScale_altivec;
- } else {
- sws_init_swScale_C(c);
- return swScale_C;
- }
-#endif
- sws_init_swScale_C(c);
- return swScale_C;
-#endif /* ARCH_X86 && CONFIG_GPL */
-#else //CONFIG_RUNTIME_CPUDETECT
-#if COMPILE_TEMPLATE_MMX2
- sws_init_swScale_MMX2(c);
- return swScale_MMX2;
-#elif COMPILE_TEMPLATE_AMD3DNOW
- sws_init_swScale_3DNow(c);
- return swScale_3DNow;
-#elif COMPILE_TEMPLATE_MMX
- sws_init_swScale_MMX(c);
- return swScale_MMX;
-#elif COMPILE_TEMPLATE_ALTIVEC
- sws_init_swScale_altivec(c);
- return swScale_altivec;
-#else
- sws_init_swScale_C(c);
- return swScale_C;
-#endif
-#endif //!CONFIG_RUNTIME_CPUDETECT
-}
-
-static int PlanarToNV12Wrapper(SwsContext *c, const 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] && srcStride[0] > 0)
- memcpy(dst, src[0], srcSliceH*dstStride[0]);
- else {
- int i;
- const uint8_t *srcPtr= src[0];
- uint8_t *dstPtr= dst;
- for (i=0; i<srcSliceH; i++) {
- memcpy(dstPtr, srcPtr, c->srcW);
- srcPtr+= srcStride[0];
- dstPtr+= dstStride[0];
- }
- }
- dst = dstParam[1] + dstStride[1]*srcSliceY/2;
- if (c->dstFormat == PIX_FMT_NV12)
- interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);
- else
- interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);
-
- return srcSliceH;
-}
-
-static int PlanarToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dstParam[], int dstStride[])
-{
- uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
-
- yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
-
- return srcSliceH;
-}
-
-static int PlanarToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dstParam[], int dstStride[])
-{
- uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
-
- yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
-
- return srcSliceH;
-}
-
-static int YUV422PToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dstParam[], int dstStride[])
-{
- uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
-
- yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
-
- return srcSliceH;
-}
-
-static int YUV422PToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dstParam[], int dstStride[])
-{
- uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
-
- yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
-
- return srcSliceH;
-}
-
-static int YUYV2YUV420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dstParam[], int dstStride[])
-{
- uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
- uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;
- uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;
-
- yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
-
- if (dstParam[3])
- fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
-
- return srcSliceH;
-}
-
-static int YUYV2YUV422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dstParam[], int dstStride[])
-{
- uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
- uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;
- uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;
-
- yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
-
- return srcSliceH;
-}
-
-static int UYVY2YUV420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dstParam[], int dstStride[])
-{
- uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
- uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;
- uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;
-
- uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
-
- if (dstParam[3])
- fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
-
- return srcSliceH;
-}
-
-static int UYVY2YUV422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dstParam[], int dstStride[])
-{
- uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
- uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;
- uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;
-
- uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
-
- return srcSliceH;
-}
-
-static int pal2rgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[])
-{
- const enum PixelFormat srcFormat= c->srcFormat;
- const enum PixelFormat dstFormat= c->dstFormat;
- void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,
- const uint8_t *palette)=NULL;
- int i;
- uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
- const uint8_t *srcPtr= src[0];
-
- if (!usePal(srcFormat))
- av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
- sws_format_name(srcFormat), sws_format_name(dstFormat));
-
- switch(dstFormat) {
- case PIX_FMT_RGB32 : conv = palette8topacked32; break;
- case PIX_FMT_BGR32 : conv = palette8topacked32; break;
- case PIX_FMT_BGR32_1: conv = palette8topacked32; break;
- case PIX_FMT_RGB32_1: conv = palette8topacked32; break;
- case PIX_FMT_RGB24 : conv = palette8topacked24; break;
- case PIX_FMT_BGR24 : conv = palette8topacked24; break;
- default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
- sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
- }
-
-
- for (i=0; i<srcSliceH; i++) {
- conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
- srcPtr+= srcStride[0];
- dstPtr+= dstStride[0];
- }
-
- return srcSliceH;
-}
-
-/* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
-static int rgb2rgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[])
-{
- const enum PixelFormat srcFormat= c->srcFormat;
- const enum PixelFormat dstFormat= c->dstFormat;
- const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;
- const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;
- const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */
- const int dstId= fmt_depth(dstFormat) >> 2;
- void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;
-
- /* BGR -> BGR */
- if ( (isBGR(srcFormat) && isBGR(dstFormat))
- || (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;
- }
- } else if ( (isBGR(srcFormat) && isRGB(dstFormat))
- || (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;
- }
- }
-
- if (!conv) {
- av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
- sws_format_name(srcFormat), sws_format_name(dstFormat));
- } else {
- const uint8_t *srcPtr= src[0];
- if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)
- srcPtr += ALT32_CORR;
-
- if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)
- conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
- else {
- int i;
- 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];
- }
- }
- }
- return srcSliceH;
-}
-
-static int bgr24toyv12Wrapper(SwsContext *c, const 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]);
- if (dst[3])
- fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
- return srcSliceH;
-}
-
-static int yvu9toyv12Wrapper(SwsContext *c, const const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[])
-{
- int i;
-
- /* copy Y */
- if (srcStride[0]==dstStride[0] && srcStride[0] > 0)
- memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
- else {
- const 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==PIX_FMT_YUV420P || c->dstFormat==PIX_FMT_YUVA420P) {
- planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,
- srcSliceH >> 2, srcStride[1], dstStride[1]);
- planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,
- srcSliceH >> 2, srcStride[2], dstStride[2]);
- } else {
- planar2x(src[1], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,
- srcSliceH >> 2, srcStride[1], dstStride[2]);
- planar2x(src[2], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,
- srcSliceH >> 2, srcStride[2], dstStride[1]);
- }
- if (dst[3])
- fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
- return srcSliceH;
-}
-
-/* unscaled copy like stuff (assumes nearly identical formats) */
-static int packedCopy(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[])
-{
- if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
- memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
- else {
- int i;
- const uint8_t *srcPtr= src[0];
- uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
- int length=0;
-
- /* universal length finder */
- while(length+c->srcW <= FFABS(dstStride[0])
- && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;
- assert(length!=0);
-
- for (i=0; i<srcSliceH; i++) {
- memcpy(dstPtr, srcPtr, length);
- srcPtr+= srcStride[0];
- dstPtr+= dstStride[0];
- }
- }
- return srcSliceH;
-}
-
-static int planarCopy(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[])
-{
- int plane, i, j;
- for (plane=0; plane<4; plane++) {
- int length= (plane==0 || plane==3) ? c->srcW : -((-c->srcW )>>c->chrDstHSubSample);
- int y= (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
- int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
- const uint8_t *srcPtr= src[plane];
- uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
-
- if (!dst[plane]) continue;
- // ignore palette for GRAY8
- if (plane == 1 && !dst[2]) continue;
- if (!src[plane] || (plane == 1 && !src[2])) {
- if(is16BPS(c->dstFormat))
- length*=2;
- fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);
- } else {
- if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {
- if (!isBE(c->srcFormat)) srcPtr++;
- for (i=0; i<height; i++) {
- for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];
- srcPtr+= srcStride[plane];
- dstPtr+= dstStride[plane];
- }
- } else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {
- for (i=0; i<height; i++) {
- for (j=0; j<length; j++) {
- dstPtr[ j<<1 ] = srcPtr[j];
- dstPtr[(j<<1)+1] = srcPtr[j];
- }
- srcPtr+= srcStride[plane];
- dstPtr+= dstStride[plane];
- }
- } else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)
- && isBE(c->srcFormat) != isBE(c->dstFormat)) {
-
- for (i=0; i<height; i++) {
- for (j=0; j<length; j++)
- ((uint16_t*)dstPtr)[j] = bswap_16(((const uint16_t*)srcPtr)[j]);
- srcPtr+= srcStride[plane];
- dstPtr+= dstStride[plane];
- }
- } else if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)
- memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
- else {
- if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
- length*=2;
- for (i=0; i<height; i++) {
- memcpy(dstPtr, srcPtr, length);
- srcPtr+= srcStride[plane];
- dstPtr+= dstStride[plane];
- }
- }
- }
- }
- return srcSliceH;
-}
-
-
-static void getSubSampleFactors(int *h, int *v, enum PixelFormat format)
-{
- *h = av_pix_fmt_descriptors[format].log2_chroma_w;
- *v = av_pix_fmt_descriptors[format].log2_chroma_h;
-}
-
-static uint16_t roundToInt16(int64_t f)
-{
- int r= (f + (1<<15))>>16;
- if (r<-0x7FFF) return 0x8000;
- else if (r> 0x7FFF) return 0x7FFF;
- else return r;
-}
-
-int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation)
-{
- int64_t crv = inv_table[0];
- int64_t cbu = inv_table[1];
- int64_t cgu = -inv_table[2];
- int64_t cgv = -inv_table[3];
- int64_t cy = 1<<16;
- int64_t oy = 0;
-
- memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);
- memcpy(c->dstColorspaceTable, table, sizeof(int)*4);
-
- c->brightness= brightness;
- c->contrast = contrast;
- c->saturation= saturation;
- c->srcRange = srcRange;
- c->dstRange = dstRange;
- if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
-
- c->uOffset= 0x0400040004000400LL;
- c->vOffset= 0x0400040004000400LL;
-
- if (!srcRange) {
- cy= (cy*255) / 219;
- oy= 16<<16;
- } else {
- crv= (crv*224) / 255;
- cbu= (cbu*224) / 255;
- cgu= (cgu*224) / 255;
- cgv= (cgv*224) / 255;
- }
-
- cy = (cy *contrast )>>16;
- crv= (crv*contrast * saturation)>>32;
- cbu= (cbu*contrast * saturation)>>32;
- cgu= (cgu*contrast * saturation)>>32;
- cgv= (cgv*contrast * saturation)>>32;
-
- oy -= 256*brightness;
-
- c->yCoeff= roundToInt16(cy *8192) * 0x0001000100010001ULL;
- c->vrCoeff= roundToInt16(crv*8192) * 0x0001000100010001ULL;
- c->ubCoeff= roundToInt16(cbu*8192) * 0x0001000100010001ULL;
- c->vgCoeff= roundToInt16(cgv*8192) * 0x0001000100010001ULL;
- c->ugCoeff= roundToInt16(cgu*8192) * 0x0001000100010001ULL;
- c->yOffset= roundToInt16(oy * 8) * 0x0001000100010001ULL;
-
- c->yuv2rgb_y_coeff = (int16_t)roundToInt16(cy <<13);
- c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);
- c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);
- c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);
- c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);
- c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);
-
- ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);
- //FIXME factorize
-
-#ifdef COMPILE_ALTIVEC
- if (c->flags & SWS_CPU_CAPS_ALTIVEC)
- ff_yuv2rgb_init_tables_altivec(c, inv_table, brightness, contrast, saturation);
-#endif
- return 0;
-}
-
-int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation)
-{
- if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
-
- *inv_table = c->srcColorspaceTable;
- *table = c->dstColorspaceTable;
- *srcRange = c->srcRange;
- *dstRange = c->dstRange;
- *brightness= c->brightness;
- *contrast = c->contrast;
- *saturation= c->saturation;
-
- return 0;
-}
-
-static int handle_jpeg(enum PixelFormat *format)
-{
- switch (*format) {
- case PIX_FMT_YUVJ420P:
- *format = PIX_FMT_YUV420P;
- return 1;
- case PIX_FMT_YUVJ422P:
- *format = PIX_FMT_YUV422P;
- return 1;
- case PIX_FMT_YUVJ444P:
- *format = PIX_FMT_YUV444P;
- return 1;
- case PIX_FMT_YUVJ440P:
- *format = PIX_FMT_YUV440P;
- return 1;
- default:
- return 0;
- }
-}
-
-SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,
- SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
-{
-
- SwsContext *c;
- int i;
- int usesVFilter, usesHFilter;
- int unscaled, needsDither;
- int srcRange, dstRange;
- SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
-#if ARCH_X86
- if (flags & SWS_CPU_CAPS_MMX)
- __asm__ volatile("emms\n\t"::: "memory");
-#endif
-
-#if !CONFIG_RUNTIME_CPUDETECT //ensure that the flags match the compiled variant if cpudetect is off
- flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);
-#if COMPILE_TEMPLATE_MMX2
- flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
-#elif COMPILE_TEMPLATE_AMD3DNOW
- flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;
-#elif COMPILE_TEMPLATE_MMX
- flags |= SWS_CPU_CAPS_MMX;
-#elif COMPILE_TEMPLATE_ALTIVEC
- flags |= SWS_CPU_CAPS_ALTIVEC;
-#elif ARCH_BFIN
- flags |= SWS_CPU_CAPS_BFIN;
-#endif
-#endif /* CONFIG_RUNTIME_CPUDETECT */
- if (!rgb15to16) sws_rgb2rgb_init(flags);
-
- unscaled = (srcW == dstW && srcH == dstH);
- needsDither= (isBGR(dstFormat) || isRGB(dstFormat))
- && (fmt_depth(dstFormat))<24
- && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));
-
- srcRange = handle_jpeg(&srcFormat);
- dstRange = handle_jpeg(&dstFormat);
-
- if (!isSupportedIn(srcFormat)) {
- av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));
- return NULL;
- }
- if (!isSupportedOut(dstFormat)) {
- av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));
- return NULL;
- }
-
- i= flags & ( SWS_POINT
- |SWS_AREA
- |SWS_BILINEAR
- |SWS_FAST_BILINEAR
- |SWS_BICUBIC
- |SWS_X
- |SWS_GAUSS
- |SWS_LANCZOS
- |SWS_SINC
- |SWS_SPLINE
- |SWS_BICUBLIN);
- if(!i || (i & (i-1))) {
- av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be chosen\n");
- return NULL;
- }
-
- /* sanity check */
- 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
- av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",
- srcW, srcH, dstW, dstH);
- return NULL;
- }
- if(srcW > VOFW || dstW > VOFW) {
- av_log(NULL, AV_LOG_ERROR, "swScaler: Compile-time maximum width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");
- return NULL;
- }
-
- if (!dstFilter) dstFilter= &dummyFilter;
- if (!srcFilter) srcFilter= &dummyFilter;
-
- FF_ALLOCZ_OR_GOTO(NULL, c, sizeof(SwsContext), fail);
-
- c->av_class = &sws_context_class;
- c->srcW= srcW;
- c->srcH= srcH;
- c->dstW= dstW;
- c->dstH= dstH;
- c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
- c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
- c->flags= flags;
- c->dstFormat= dstFormat;
- c->srcFormat= srcFormat;
- c->vRounder= 4* 0x0001000100010001ULL;
-
- usesHFilter= usesVFilter= 0;
- if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;
- if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;
- if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;
- if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;
- if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;
- if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;
- if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;
- if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;
-
- getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);
- getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);
-
- // reuse chroma for 2 pixels 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 other pixel for chroma calculation unless user wants full chroma
- if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)
- && srcFormat!=PIX_FMT_RGB8 && srcFormat!=PIX_FMT_BGR8
- && srcFormat!=PIX_FMT_RGB4 && srcFormat!=PIX_FMT_BGR4
- && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE
- && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))
- c->chrSrcHSubSample=1;
-
- if (param) {
- c->param[0] = param[0];
- c->param[1] = param[1];
- } else {
- c->param[0] =
- c->param[1] = SWS_PARAM_DEFAULT;
- }
-
- // Note the -((-x)>>y) is so that we always round toward +inf.
- c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);
- c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);
- c->chrDstW= -((-dstW) >> c->chrDstHSubSample);
- c->chrDstH= -((-dstH) >> c->chrDstVSubSample);
-
- sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);
-
- /* unscaled special cases */
- if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat))) {
- /* yv12_to_nv12 */
- if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {
- c->swScale= PlanarToNV12Wrapper;
- }
- /* yuv2bgr */
- if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && (isBGR(dstFormat) || isRGB(dstFormat))
- && !(flags & SWS_ACCURATE_RND) && !(dstH&1)) {
- c->swScale= ff_yuv2rgb_get_func_ptr(c);
- }
-
- if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT)) {
- c->swScale= yvu9toyv12Wrapper;
- }
-
- /* bgr24toYV12 */
- if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))
- c->swScale= bgr24toyv12Wrapper;
-
- /* RGB/BGR -> RGB/BGR (no dither needed forms) */
- if ( (isBGR(srcFormat) || isRGB(srcFormat))
- && (isBGR(dstFormat) || isRGB(dstFormat))
- && srcFormat != PIX_FMT_BGR8 && dstFormat != PIX_FMT_BGR8
- && srcFormat != PIX_FMT_RGB8 && dstFormat != PIX_FMT_RGB8
- && srcFormat != PIX_FMT_BGR4 && dstFormat != PIX_FMT_BGR4
- && srcFormat != PIX_FMT_RGB4 && dstFormat != PIX_FMT_RGB4
- && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE
- && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE
- && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK
- && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE
- && dstFormat != PIX_FMT_RGB32_1
- && dstFormat != PIX_FMT_BGR32_1
- && srcFormat != PIX_FMT_RGB48LE && dstFormat != PIX_FMT_RGB48LE
- && srcFormat != PIX_FMT_RGB48BE && dstFormat != PIX_FMT_RGB48BE
- && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
- c->swScale= rgb2rgbWrapper;
-
- if ((usePal(srcFormat) && (
- dstFormat == PIX_FMT_RGB32 ||
- dstFormat == PIX_FMT_RGB32_1 ||
- dstFormat == PIX_FMT_RGB24 ||
- dstFormat == PIX_FMT_BGR32 ||
- dstFormat == PIX_FMT_BGR32_1 ||
- dstFormat == PIX_FMT_BGR24)))
- c->swScale= pal2rgbWrapper;
-
- if (srcFormat == PIX_FMT_YUV422P) {
- if (dstFormat == PIX_FMT_YUYV422)
- c->swScale= YUV422PToYuy2Wrapper;
- else if (dstFormat == PIX_FMT_UYVY422)
- c->swScale= YUV422PToUyvyWrapper;
- }
-
- /* LQ converters if -sws 0 or -sws 4*/
- if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {
- /* yv12_to_yuy2 */
- if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {
- if (dstFormat == PIX_FMT_YUYV422)
- c->swScale= PlanarToYuy2Wrapper;
- else if (dstFormat == PIX_FMT_UYVY422)
- c->swScale= PlanarToUyvyWrapper;
- }
- }
- if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
- c->swScale= YUYV2YUV420Wrapper;
- if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
- c->swScale= UYVY2YUV420Wrapper;
- if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)
- c->swScale= YUYV2YUV422Wrapper;
- if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)
- c->swScale= UYVY2YUV422Wrapper;
-
-#ifdef COMPILE_ALTIVEC
- if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&
- !(c->flags & SWS_BITEXACT) &&
- srcFormat == PIX_FMT_YUV420P) {
- // unscaled YV12 -> packed YUV, we want speed
- if (dstFormat == PIX_FMT_YUYV422)
- c->swScale= yv12toyuy2_unscaled_altivec;
- else if (dstFormat == PIX_FMT_UYVY422)
- c->swScale= yv12touyvy_unscaled_altivec;
- }
-#endif
-
- /* simple copy */
- if ( srcFormat == dstFormat
- || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)
- || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)
- || (isPlanarYUV(srcFormat) && isGray(dstFormat))
- || (isPlanarYUV(dstFormat) && isGray(srcFormat))
- || (isGray(dstFormat) && isGray(srcFormat))
- || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)
- && c->chrDstHSubSample == c->chrSrcHSubSample
- && c->chrDstVSubSample == c->chrSrcVSubSample
- && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21
- && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))
- {
- if (isPacked(c->srcFormat))
- c->swScale= packedCopy;
- else /* Planar YUV or gray */
- c->swScale= planarCopy;
- }
-#if ARCH_BFIN
- if (flags & SWS_CPU_CAPS_BFIN)
- ff_bfin_get_unscaled_swscale (c);
-#endif
-
- if (c->swScale) {
- if (flags&SWS_PRINT_INFO)
- av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",
- sws_format_name(srcFormat), sws_format_name(dstFormat));
- return c;
- }
- }
-
- if (flags & SWS_CPU_CAPS_MMX2) {
- 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)
- av_log(c, AV_LOG_INFO, "output width is not a multiple of 32 -> no MMX2 scaler\n");
- }
- if (usesHFilter) c->canMMX2BeUsed=0;
- }
- 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
- // this is not perfect, but no one should notice the difference, the more correct variant
- // would be like the vertical one, but that would require some special code for the
- // first and last pixel
- if (flags&SWS_FAST_BILINEAR) {
- if (c->canMMX2BeUsed) {
- c->lumXInc+= 20;
- c->chrXInc+= 20;
- }
- //we don't use the x86 asm scaler if MMX is available
- else if (flags & SWS_CPU_CAPS_MMX) {
- c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
- c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;
- }
- }
-
- /* precalculate horizontal scaler filter coefficients */
- {
-#if defined(COMPILE_MMX2)
-// can't downscale !!!
- if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR)) {
- c->lumMmx2FilterCodeSize = initMMX2HScaler( dstW, c->lumXInc, NULL, NULL, NULL, 8);
- c->chrMmx2FilterCodeSize = initMMX2HScaler(c->chrDstW, c->chrXInc, NULL, NULL, NULL, 4);
-
-#ifdef MAP_ANONYMOUS
- c->lumMmx2FilterCode = mmap(NULL, c->lumMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
- c->chrMmx2FilterCode = mmap(NULL, c->chrMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
-#elif HAVE_VIRTUALALLOC
- c->lumMmx2FilterCode = VirtualAlloc(NULL, c->lumMmx2FilterCodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
- c->chrMmx2FilterCode = VirtualAlloc(NULL, c->chrMmx2FilterCodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
-#else
- c->lumMmx2FilterCode = av_malloc(c->lumMmx2FilterCodeSize);
- c->chrMmx2FilterCode = av_malloc(c->chrMmx2FilterCodeSize);
-#endif
-
- FF_ALLOCZ_OR_GOTO(c, c->hLumFilter , (dstW /8+8)*sizeof(int16_t), fail);
- FF_ALLOCZ_OR_GOTO(c, c->hChrFilter , (c->chrDstW /4+8)*sizeof(int16_t), fail);
- FF_ALLOCZ_OR_GOTO(c, c->hLumFilterPos, (dstW /2/8+8)*sizeof(int32_t), fail);
- FF_ALLOCZ_OR_GOTO(c, c->hChrFilterPos, (c->chrDstW/2/4+8)*sizeof(int32_t), fail);
-
- initMMX2HScaler( dstW, c->lumXInc, c->lumMmx2FilterCode, c->hLumFilter, c->hLumFilterPos, 8);
- initMMX2HScaler(c->chrDstW, c->chrXInc, c->chrMmx2FilterCode, c->hChrFilter, c->hChrFilterPos, 4);
-
-#ifdef MAP_ANONYMOUS
- mprotect(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize, PROT_EXEC | PROT_READ);
- mprotect(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize, PROT_EXEC | PROT_READ);
-#endif
- } else
-#endif /* defined(COMPILE_MMX2) */
- {
- const int filterAlign=
- (flags & SWS_CPU_CAPS_MMX) ? 4 :
- (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
- 1;
-
- if (initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,
- srcW , dstW, filterAlign, 1<<14,
- (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
- srcFilter->lumH, dstFilter->lumH, c->param) < 0)
- goto fail;
- if (initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,
- c->chrSrcW, c->chrDstW, filterAlign, 1<<14,
- (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
- srcFilter->chrH, dstFilter->chrH, c->param) < 0)
- goto fail;
- }
- } // initialize horizontal stuff
-
-
-
- /* precalculate vertical scaler filter coefficients */
- {
- const int filterAlign=
- (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :
- (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
- 1;
-
- if (initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,
- srcH , dstH, filterAlign, (1<<12),
- (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
- srcFilter->lumV, dstFilter->lumV, c->param) < 0)
- goto fail;
- if (initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,
- c->chrSrcH, c->chrDstH, filterAlign, (1<<12),
- (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
- srcFilter->chrV, dstFilter->chrV, c->param) < 0)
- goto fail;
-
-#ifdef COMPILE_ALTIVEC
- FF_ALLOC_OR_GOTO(c, c->vYCoeffsBank, sizeof (vector signed short)*c->vLumFilterSize*c->dstH, fail);
- FF_ALLOC_OR_GOTO(c, c->vCCoeffsBank, sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH, fail);
-
- for (i=0;i<c->vLumFilterSize*c->dstH;i++) {
- int j;
- short *p = (short *)&c->vYCoeffsBank[i];
- for (j=0;j<8;j++)
- p[j] = c->vLumFilter[i];
- }
-
- for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {
- int j;
- short *p = (short *)&c->vCCoeffsBank[i];
- for (j=0;j<8;j++)
- p[j] = c->vChrFilter[i];
- }
-#endif
- }
-
- // calculate buffer sizes so that they won't run out while handling these damn slices
- c->vLumBufSize= c->vLumFilterSize;
- c->vChrBufSize= c->vChrFilterSize;
- for (i=0; i<dstH; i++) {
- int chrI= i*c->chrDstH / dstH;
- int nextSlice= FFMAX(c->vLumFilterPos[i ] + c->vLumFilterSize - 1,
- ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));
-
- nextSlice>>= c->chrSrcVSubSample;
- nextSlice<<= c->chrSrcVSubSample;
- if (c->vLumFilterPos[i ] + c->vLumBufSize < nextSlice)
- c->vLumBufSize= nextSlice - c->vLumFilterPos[i];
- 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)
- FF_ALLOC_OR_GOTO(c, c->lumPixBuf, c->vLumBufSize*2*sizeof(int16_t*), fail);
- FF_ALLOC_OR_GOTO(c, c->chrPixBuf, c->vChrBufSize*2*sizeof(int16_t*), fail);
- if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat))
- FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf, c->vLumBufSize*2*sizeof(int16_t*), fail);
- //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)
- /* align at 16 bytes for AltiVec */
- for (i=0; i<c->vLumBufSize; i++) {
- FF_ALLOCZ_OR_GOTO(c, c->lumPixBuf[i+c->vLumBufSize], VOF+1, fail);
- c->lumPixBuf[i] = c->lumPixBuf[i+c->vLumBufSize];
- }
- for (i=0; i<c->vChrBufSize; i++) {
- FF_ALLOC_OR_GOTO(c, c->chrPixBuf[i+c->vChrBufSize], (VOF+1)*2, fail);
- c->chrPixBuf[i] = c->chrPixBuf[i+c->vChrBufSize];
- }
- if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf)
- for (i=0; i<c->vLumBufSize; i++) {
- FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf[i+c->vLumBufSize], VOF+1, fail);
- c->alpPixBuf[i] = c->alpPixBuf[i+c->vLumBufSize];
- }
-
- //try to avoid drawing green stuff between the right end and the stride end
- for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);
-
- assert(2*VOFW == VOF);
-
- assert(c->chrDstH <= dstH);
-
- if (flags&SWS_PRINT_INFO) {
- if (flags&SWS_FAST_BILINEAR)
- av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");
- else if (flags&SWS_BILINEAR)
- av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");
- else if (flags&SWS_BICUBIC)
- av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");
- else if (flags&SWS_X)
- av_log(c, AV_LOG_INFO, "Experimental scaler, ");
- else if (flags&SWS_POINT)
- av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");
- else if (flags&SWS_AREA)
- av_log(c, AV_LOG_INFO, "Area Averaging scaler, ");
- else if (flags&SWS_BICUBLIN)
- av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");
- else if (flags&SWS_GAUSS)
- av_log(c, AV_LOG_INFO, "Gaussian scaler, ");
- else if (flags&SWS_SINC)
- av_log(c, AV_LOG_INFO, "Sinc scaler, ");
- else if (flags&SWS_LANCZOS)
- av_log(c, AV_LOG_INFO, "Lanczos scaler, ");
- else if (flags&SWS_SPLINE)
- av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");
- else
- av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");
-
- av_log(c, AV_LOG_INFO, "from %s to %s%s ",
- sws_format_name(srcFormat),
-#ifdef DITHER1XBPP
- dstFormat == PIX_FMT_BGR555 || dstFormat == PIX_FMT_BGR565 ? "dithered " : "",
-#else
- "",
-#endif
- sws_format_name(dstFormat));
-
- if (flags & SWS_CPU_CAPS_MMX2)
- av_log(c, AV_LOG_INFO, "using MMX2\n");
- else if (flags & SWS_CPU_CAPS_3DNOW)
- av_log(c, AV_LOG_INFO, "using 3DNOW\n");
- else if (flags & SWS_CPU_CAPS_MMX)
- av_log(c, AV_LOG_INFO, "using MMX\n");
- else if (flags & SWS_CPU_CAPS_ALTIVEC)
- av_log(c, AV_LOG_INFO, "using AltiVec\n");
- else
- av_log(c, AV_LOG_INFO, "using C\n");
- }
-
- if (flags & SWS_PRINT_INFO) {
- if (flags & SWS_CPU_CAPS_MMX) {
- if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))
- av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
- else {
- if (c->hLumFilterSize==4)
- av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");
- else if (c->hLumFilterSize==8)
- av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");
- else
- av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");
-
- if (c->hChrFilterSize==4)
- av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");
- else if (c->hChrFilterSize==8)
- av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");
- else
- av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");
- }
- } else {
-#if ARCH_X86
- av_log(c, AV_LOG_VERBOSE, "using x86 asm scaler for horizontal scaling\n");
-#else
- if (flags & SWS_FAST_BILINEAR)
- av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");
- else
- av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");
-#endif
- }
- if (isPlanarYUV(dstFormat)) {
- if (c->vLumFilterSize==1)
- av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- else
- av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- } else {
- if (c->vLumFilterSize==1 && c->vChrFilterSize==2)
- av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
- " 2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)
- av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- else
- av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- }
-
- if (dstFormat==PIX_FMT_BGR24)
- av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 converter\n",
- (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));
- else if (dstFormat==PIX_FMT_RGB32)
- av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- else if (dstFormat==PIX_FMT_BGR565)
- av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- else if (dstFormat==PIX_FMT_BGR555)
- av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
-
- av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
- }
- if (flags & SWS_PRINT_INFO) {
- av_log(c, AV_LOG_DEBUG, "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);
- av_log(c, AV_LOG_DEBUG, "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= getSwsFunc(c);
- return c;
-
-fail:
- sws_freeContext(c);
- return NULL;
-}
-
-static void reset_ptr(const uint8_t* src[], int format)
-{
- if(!isALPHA(format))
- src[3]=NULL;
- if(!isPlanarYUV(format)) {
- src[3]=src[2]=NULL;
-
- if (!usePal(format))
- src[1]= NULL;
- }
-}
-
-/**
- * swscale wrapper, so we don't need to export the SwsContext.
- * Assumes planar YUV to be in YUV order instead of YVU.
- */
-int sws_scale(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[])
-{
- int i;
- const uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};
- uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};
-
- // do not mess up sliceDir if we have a "trailing" 0-size slice
- if (srcSliceH == 0)
- return 0;
-
- if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
- av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
- return 0;
- }
- if (c->sliceDir == 0) {
- if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
- }
-
- if (usePal(c->srcFormat)) {
- for (i=0; i<256; i++) {
- int p, r, g, b,y,u,v;
- if(c->srcFormat == PIX_FMT_PAL8) {
- p=((const uint32_t*)(src[1]))[i];
- r= (p>>16)&0xFF;
- g= (p>> 8)&0xFF;
- b= p &0xFF;
- } else if(c->srcFormat == PIX_FMT_RGB8) {
- r= (i>>5 )*36;
- g= ((i>>2)&7)*36;
- b= (i&3 )*85;
- } else if(c->srcFormat == PIX_FMT_BGR8) {
- b= (i>>6 )*85;
- g= ((i>>3)&7)*36;
- r= (i&7 )*36;
- } else if(c->srcFormat == PIX_FMT_RGB4_BYTE) {
- r= (i>>3 )*255;
- g= ((i>>1)&3)*85;
- b= (i&1 )*255;
- } else {
- assert(c->srcFormat == PIX_FMT_BGR4_BYTE);
- b= (i>>3 )*255;
- g= ((i>>1)&3)*85;
- r= (i&1 )*255;
- }
- y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
- u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
- v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
- c->pal_yuv[i]= y + (u<<8) + (v<<16);
-
-
- switch(c->dstFormat) {
- case PIX_FMT_BGR32:
-#if !HAVE_BIGENDIAN
- case PIX_FMT_RGB24:
-#endif
- c->pal_rgb[i]= r + (g<<8) + (b<<16);
- break;
- case PIX_FMT_BGR32_1:
-#if HAVE_BIGENDIAN
- case PIX_FMT_BGR24:
-#endif
- c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;
- break;
- case PIX_FMT_RGB32_1:
-#if HAVE_BIGENDIAN
- case PIX_FMT_RGB24:
-#endif
- c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;
- break;
- case PIX_FMT_RGB32:
-#if !HAVE_BIGENDIAN
- case PIX_FMT_BGR24:
-#endif
- default:
- c->pal_rgb[i]= b + (g<<8) + (r<<16);
- }
- }
- }
-
- // copy strides, so they can safely be modified
- if (c->sliceDir == 1) {
- // slices go from top to bottom
- int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};
- int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};
-
- reset_ptr(src2, c->srcFormat);
- reset_ptr((const uint8_t**)dst2, c->dstFormat);
-
- /* reset slice direction at end of frame */
- if (srcSliceY + srcSliceH == c->srcH)
- c->sliceDir = 0;
-
- return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);
- } else {
- // slices go from bottom to top => we flip the image internally
- int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};
- int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};
-
- src2[0] += (srcSliceH-1)*srcStride[0];
- if (!usePal(c->srcFormat))
- src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];
- src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];
- src2[3] += (srcSliceH-1)*srcStride[3];
- dst2[0] += ( c->dstH -1)*dstStride[0];
- dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];
- dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];
- dst2[3] += ( c->dstH -1)*dstStride[3];
-
- reset_ptr(src2, c->srcFormat);
- reset_ptr((const uint8_t**)dst2, c->dstFormat);
-
- /* reset slice direction at end of frame */
- if (!srcSliceY)
- c->sliceDir = 0;
-
- return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);
- }
-}
-
-#if LIBSWSCALE_VERSION_MAJOR < 1
-int sws_scale_ordered(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[])
-{
- return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);
-}
-#endif
-
-SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
- float lumaSharpen, float chromaSharpen,
- float chromaHShift, float chromaVShift,
- int verbose)
-{
- SwsFilter *filter= av_malloc(sizeof(SwsFilter));
- if (!filter)
- return NULL;
-
- if (lumaGBlur!=0.0) {
- filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);
- filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);
- } else {
- filter->lumH= sws_getIdentityVec();
- filter->lumV= sws_getIdentityVec();
- }
-
- if (chromaGBlur!=0.0) {
- filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);
- filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);
- } else {
- filter->chrH= sws_getIdentityVec();
- filter->chrV= sws_getIdentityVec();
- }
-
- if (chromaSharpen!=0.0) {
- SwsVector *id= sws_getIdentityVec();
- sws_scaleVec(filter->chrH, -chromaSharpen);
- sws_scaleVec(filter->chrV, -chromaSharpen);
- sws_addVec(filter->chrH, id);
- sws_addVec(filter->chrV, id);
- sws_freeVec(id);
- }
-
- if (lumaSharpen!=0.0) {
- SwsVector *id= sws_getIdentityVec();
- sws_scaleVec(filter->lumH, -lumaSharpen);
- sws_scaleVec(filter->lumV, -lumaSharpen);
- sws_addVec(filter->lumH, id);
- sws_addVec(filter->lumV, id);
- sws_freeVec(id);
- }
-
- if (chromaHShift != 0.0)
- sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));
-
- if (chromaVShift != 0.0)
- sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));
-
- sws_normalizeVec(filter->chrH, 1.0);
- sws_normalizeVec(filter->chrV, 1.0);
- sws_normalizeVec(filter->lumH, 1.0);
- sws_normalizeVec(filter->lumV, 1.0);
-
- if (verbose) sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);
- if (verbose) sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);
-
- return filter;
-}
-
-SwsVector *sws_allocVec(int length)
-{
- SwsVector *vec = av_malloc(sizeof(SwsVector));
- if (!vec)
- return NULL;
- vec->length = length;
- vec->coeff = av_malloc(sizeof(double) * length);
- if (!vec->coeff)
- av_freep(&vec);
- return vec;
-}
-
-SwsVector *sws_getGaussianVec(double variance, double quality)
-{
- const int length= (int)(variance*quality + 0.5) | 1;
- int i;
- double middle= (length-1)*0.5;
- SwsVector *vec= sws_allocVec(length);
-
- if (!vec)
- return NULL;
-
- for (i=0; i<length; i++) {
- double dist= i-middle;
- vec->coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);
- }
-
- sws_normalizeVec(vec, 1.0);
-
- return vec;
-}
-
-SwsVector *sws_getConstVec(double c, int length)
-{
- int i;
- SwsVector *vec= sws_allocVec(length);
-
- if (!vec)
- return NULL;
-
- for (i=0; i<length; i++)
- vec->coeff[i]= c;
-
- return vec;
-}
-
-
-SwsVector *sws_getIdentityVec(void)
-{
- return sws_getConstVec(1.0, 1);
-}
-
-double sws_dcVec(SwsVector *a)
-{
- int i;
- double sum=0;
-
- for (i=0; i<a->length; i++)
- sum+= a->coeff[i];
-
- return sum;
-}
-
-void sws_scaleVec(SwsVector *a, double scalar)
-{
- int i;
-
- for (i=0; i<a->length; i++)
- a->coeff[i]*= scalar;
-}
-
-void sws_normalizeVec(SwsVector *a, double height)
-{
- sws_scaleVec(a, height/sws_dcVec(a));
-}
-
-static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b)
-{
- int length= a->length + b->length - 1;
- int i, j;
- SwsVector *vec= sws_getConstVec(0.0, length);
-
- if (!vec)
- return NULL;
-
- for (i=0; i<a->length; i++) {
- for (j=0; j<b->length; j++) {
- vec->coeff[i+j]+= a->coeff[i]*b->coeff[j];
- }
- }
-
- return vec;
-}
-
-static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b)
-{
- int length= FFMAX(a->length, b->length);
- int i;
- SwsVector *vec= sws_getConstVec(0.0, length);
-
- if (!vec)
- return NULL;
-
- for (i=0; i<a->length; i++) vec->coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
- for (i=0; i<b->length; i++) vec->coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];
-
- return vec;
-}
-
-static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b)
-{
- int length= FFMAX(a->length, b->length);
- int i;
- SwsVector *vec= sws_getConstVec(0.0, length);
-
- if (!vec)
- return NULL;
-
- for (i=0; i<a->length; i++) vec->coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
- for (i=0; i<b->length; i++) vec->coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];
-
- return vec;
-}
-
-/* shift left / or right if "shift" is negative */
-static SwsVector *sws_getShiftedVec(SwsVector *a, int shift)
-{
- int length= a->length + FFABS(shift)*2;
- int i;
- SwsVector *vec= sws_getConstVec(0.0, length);
-
- if (!vec)
- return NULL;
-
- for (i=0; i<a->length; i++) {
- vec->coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];
- }
-
- return vec;
-}
-
-void sws_shiftVec(SwsVector *a, int shift)
-{
- SwsVector *shifted= sws_getShiftedVec(a, shift);
- av_free(a->coeff);
- a->coeff= shifted->coeff;
- a->length= shifted->length;
- av_free(shifted);
-}
-
-void sws_addVec(SwsVector *a, SwsVector *b)
-{
- SwsVector *sum= sws_sumVec(a, b);
- av_free(a->coeff);
- a->coeff= sum->coeff;
- a->length= sum->length;
- av_free(sum);
-}
-
-void sws_subVec(SwsVector *a, SwsVector *b)
-{
- SwsVector *diff= sws_diffVec(a, b);
- av_free(a->coeff);
- a->coeff= diff->coeff;
- a->length= diff->length;
- av_free(diff);
-}
-
-void sws_convVec(SwsVector *a, SwsVector *b)
-{
- SwsVector *conv= sws_getConvVec(a, b);
- av_free(a->coeff);
- a->coeff= conv->coeff;
- a->length= conv->length;
- av_free(conv);
-}
-
-SwsVector *sws_cloneVec(SwsVector *a)
-{
- int i;
- SwsVector *vec= sws_allocVec(a->length);
-
- if (!vec)
- return NULL;
-
- for (i=0; i<a->length; i++) vec->coeff[i]= a->coeff[i];
-
- return vec;
-}
-
-void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)
-{
- int i;
- double max=0;
- double min=0;
- double range;
-
- for (i=0; i<a->length; i++)
- if (a->coeff[i]>max) max= a->coeff[i];
-
- for (i=0; i<a->length; i++)
- if (a->coeff[i]<min) min= a->coeff[i];
-
- range= max - min;
-
- for (i=0; i<a->length; i++) {
- int x= (int)((a->coeff[i]-min)*60.0/range +0.5);
- av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);
- for (;x>0; x--) av_log(log_ctx, log_level, " ");
- av_log(log_ctx, log_level, "|\n");
- }
-}
-
-#if LIBSWSCALE_VERSION_MAJOR < 1
-void sws_printVec(SwsVector *a)
-{
- sws_printVec2(a, NULL, AV_LOG_DEBUG);
-}
-#endif
-
-void sws_freeVec(SwsVector *a)
-{
- if (!a) return;
- av_freep(&a->coeff);
- a->length=0;
- av_free(a);
-}
-
-void sws_freeFilter(SwsFilter *filter)
-{
- if (!filter) return;
-
- if (filter->lumH) sws_freeVec(filter->lumH);
- if (filter->lumV) sws_freeVec(filter->lumV);
- if (filter->chrH) sws_freeVec(filter->chrH);
- if (filter->chrV) sws_freeVec(filter->chrV);
- av_free(filter);
-}
-
-
-void sws_freeContext(SwsContext *c)
-{
- int i;
- if (!c) return;
-
- if (c->lumPixBuf) {
- for (i=0; i<c->vLumBufSize; i++)
- av_freep(&c->lumPixBuf[i]);
- av_freep(&c->lumPixBuf);
- }
-
- if (c->chrPixBuf) {
- for (i=0; i<c->vChrBufSize; i++)
- av_freep(&c->chrPixBuf[i]);
- av_freep(&c->chrPixBuf);
- }
-
- if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
- for (i=0; i<c->vLumBufSize; i++)
- av_freep(&c->alpPixBuf[i]);
- av_freep(&c->alpPixBuf);
- }
-
- av_freep(&c->vLumFilter);
- av_freep(&c->vChrFilter);
- av_freep(&c->hLumFilter);
- av_freep(&c->hChrFilter);
-#ifdef COMPILE_ALTIVEC
- av_freep(&c->vYCoeffsBank);
- av_freep(&c->vCCoeffsBank);
-#endif
-
- av_freep(&c->vLumFilterPos);
- av_freep(&c->vChrFilterPos);
- av_freep(&c->hLumFilterPos);
- av_freep(&c->hChrFilterPos);
-
-#if ARCH_X86 && CONFIG_GPL
-#ifdef MAP_ANONYMOUS
- if (c->lumMmx2FilterCode) munmap(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize);
- if (c->chrMmx2FilterCode) munmap(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize);
-#elif HAVE_VIRTUALALLOC
- if (c->lumMmx2FilterCode) VirtualFree(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize, MEM_RELEASE);
- if (c->chrMmx2FilterCode) VirtualFree(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize, MEM_RELEASE);
-#else
- av_free(c->lumMmx2FilterCode);
- av_free(c->chrMmx2FilterCode);
-#endif
- c->lumMmx2FilterCode=NULL;
- c->chrMmx2FilterCode=NULL;
-#endif /* ARCH_X86 && CONFIG_GPL */
-
- av_freep(&c->yuvTable);
-
- av_free(c);
-}
-
-struct SwsContext *sws_getCachedContext(struct SwsContext *context,
- int srcW, int srcH, enum PixelFormat srcFormat,
- int dstW, int dstH, enum PixelFormat dstFormat, int flags,
- SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
-{
- static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};
-
- if (!param)
- param = default_param;
-
- if (context) {
- if (context->srcW != srcW || context->srcH != srcH ||
- context->srcFormat != srcFormat ||
- context->dstW != dstW || context->dstH != dstH ||
- context->dstFormat != dstFormat || context->flags != flags ||
- context->param[0] != param[0] || context->param[1] != param[1])
- {
- sws_freeContext(context);
- context = NULL;
- }
- }
- if (!context) {
- return sws_getContext(srcW, srcH, srcFormat,
- dstW, dstH, dstFormat, flags,
- srcFilter, dstFilter, param);
- }
- return context;
-}
-