/* * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include <inttypes.h> #include <string.h> #include <math.h> #include <stdio.h> #include "config.h" #include <assert.h> #include "swscale.h" #include "swscale_internal.h" #include "rgb2rgb.h" #include "libavutil/intreadwrite.h" #include "libavutil/cpu.h" #include "libavutil/avutil.h" #include "libavutil/mathematics.h" #include "libavutil/bswap.h" #include "libavutil/pixdesc.h" #define RGB2YUV_SHIFT 15 #define BY ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5)) #define BV (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5)) #define BU ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5)) #define GY ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5)) #define GV (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5)) #define GU (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5)) #define RY ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5)) #define RV ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5)) #define RU (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5)) static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val) { int i; uint8_t *ptr = plane + stride*y; for (i=0; i<height; i++) { memset(ptr, val, width); ptr += stride; } } static void copyPlane(const uint8_t *src, int srcStride, int srcSliceY, int srcSliceH, int width, uint8_t *dst, int dstStride) { dst += dstStride * srcSliceY; if (dstStride == srcStride && srcStride > 0) { memcpy(dst, src, srcSliceH * dstStride); } else { int i; for (i=0; i<srcSliceH; i++) { memcpy(dst, src, width); src += srcStride; dst += dstStride; } } } static int planarToNv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t* dstParam[], int dstStride[]) { uint8_t *dst = dstParam[1] + dstStride[1]*srcSliceY/2; copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW, dstParam[0], dstStride[0]); 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 yuyvToYuv420Wrapper(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 yuyvToYuv422Wrapper(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 uyvyToYuv420Wrapper(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 uyvyToYuv422Wrapper(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 void gray8aToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette) { int i; for (i=0; i<num_pixels; i++) ((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | (src[(i<<1)+1] << 24); } static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette) { int i; for (i=0; i<num_pixels; i++) ((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | src[(i<<1)+1]; } static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette) { int i; for (i=0; i<num_pixels; i++) { //FIXME slow? dst[0]= palette[src[i<<1]*4+0]; dst[1]= palette[src[i<<1]*4+1]; dst[2]= palette[src[i<<1]*4+2]; dst+= 3; } } static int palToRgbWrapper(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, int num_pixels, const uint8_t *palette)=NULL; int i; uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY; const uint8_t *srcPtr= src[0]; if (srcFormat == PIX_FMT_GRAY8A) { switch (dstFormat) { case PIX_FMT_RGB32 : conv = gray8aToPacked32; break; case PIX_FMT_BGR32 : conv = gray8aToPacked32; break; case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break; case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break; case PIX_FMT_RGB24 : conv = gray8aToPacked24; break; case PIX_FMT_BGR24 : conv = gray8aToPacked24; break; } } else if (usePal(srcFormat)) { switch (dstFormat) { case PIX_FMT_RGB32 : conv = sws_convertPalette8ToPacked32; break; case PIX_FMT_BGR32 : conv = sws_convertPalette8ToPacked32; break; case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break; case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break; case PIX_FMT_RGB24 : conv = sws_convertPalette8ToPacked24; break; case PIX_FMT_BGR24 : conv = sws_convertPalette8ToPacked24; break; } } if (!conv) av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n", av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat)); else { for (i=0; i<srcSliceH; i++) { conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb); srcPtr+= srcStride[0]; dstPtr+= dstStride[0]; } } return srcSliceH; } #define isRGBA32(x) ( \ (x) == PIX_FMT_ARGB \ || (x) == PIX_FMT_RGBA \ || (x) == PIX_FMT_BGRA \ || (x) == PIX_FMT_ABGR \ ) /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */ static int rgbToRgbWrapper(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= (c->srcFormatBpp + 7) >> 3; const int dstBpp= (c->dstFormatBpp + 7) >> 3; const int srcId= c->srcFormatBpp >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */ const int dstId= c->dstFormatBpp >> 2; void (*conv)(const uint8_t *src, uint8_t *dst, int src_size)=NULL; #define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst) if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) { if ( CONV_IS(ABGR, RGBA) || CONV_IS(ARGB, BGRA) || CONV_IS(BGRA, ARGB) || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210; else if (CONV_IS(ABGR, ARGB) || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321; else if (CONV_IS(ABGR, BGRA) || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230; else if (CONV_IS(BGRA, RGBA) || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103; else if (CONV_IS(BGRA, ABGR) || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012; } else /* BGR -> BGR */ if ( (isBGRinInt(srcFormat) && isBGRinInt(dstFormat)) || (isRGBinInt(srcFormat) && isRGBinInt(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 ( (isBGRinInt(srcFormat) && isRGBinInt(dstFormat)) || (isRGBinInt(srcFormat) && isBGRinInt(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; } } if (!conv) { av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n", av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat)); } else { const uint8_t *srcPtr= src[0]; uint8_t *dstPtr= dst[0]; if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) && !isRGBA32(dstFormat)) srcPtr += ALT32_CORR; if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) && !isRGBA32(srcFormat)) dstPtr += ALT32_CORR; if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0 && !(srcStride[0] % srcBpp)) conv(srcPtr, dstPtr + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]); else { int i; dstPtr += 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 uint8_t* src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t* dst[], int dstStride[]) { copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW, dst[0], dstStride[0]); 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]); 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 packedCopyWrapper(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; } #define DITHER_COPY(dst, dstStride, src, srcStride, bswap, dbswap)\ uint16_t scale= dither_scale[dst_depth-1][src_depth-1];\ int shift= src_depth-dst_depth + dither_scale[src_depth-2][dst_depth-1];\ for (i = 0; i < height; i++) {\ const uint8_t *dither= dithers[src_depth-9][i&7];\ for (j = 0; j < length-7; j+=8){\ dst[j+0] = dbswap((bswap(src[j+0]) + dither[0])*scale>>shift);\ dst[j+1] = dbswap((bswap(src[j+1]) + dither[1])*scale>>shift);\ dst[j+2] = dbswap((bswap(src[j+2]) + dither[2])*scale>>shift);\ dst[j+3] = dbswap((bswap(src[j+3]) + dither[3])*scale>>shift);\ dst[j+4] = dbswap((bswap(src[j+4]) + dither[4])*scale>>shift);\ dst[j+5] = dbswap((bswap(src[j+5]) + dither[5])*scale>>shift);\ dst[j+6] = dbswap((bswap(src[j+6]) + dither[6])*scale>>shift);\ dst[j+7] = dbswap((bswap(src[j+7]) + dither[7])*scale>>shift);\ }\ for (; j < length; j++)\ dst[j] = dbswap((bswap(src[j]) + dither[j&7])*scale>>shift);\ dst += dstStride;\ src += srcStride;\ } static int planarCopyWrapper(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; int shiftonly= plane==1 || plane==2 || (!c->srcRange && plane==0); 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(isNBPS(c->srcFormat) || isNBPS(c->dstFormat) || (is16BPS(c->srcFormat) != is16BPS(c->dstFormat)) ) { const int src_depth = av_pix_fmt_descriptors[c->srcFormat].comp[plane].depth_minus1+1; const int dst_depth = av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1+1; const uint16_t *srcPtr2 = (const uint16_t*)srcPtr; uint16_t *dstPtr2 = (uint16_t*)dstPtr; if (dst_depth == 8) { if(isBE(c->srcFormat) == HAVE_BIGENDIAN){ DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, , ) } else { DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, av_bswap16, ) } } else if (src_depth == 8) { for (i = 0; i < height; i++) { #define COPY816(w)\ if(shiftonly){\ for (j = 0; j < length; j++)\ w(&dstPtr2[j], srcPtr[j]<<(dst_depth-8));\ }else{\ for (j = 0; j < length; j++)\ w(&dstPtr2[j], (srcPtr[j]<<(dst_depth-8)) |\ (srcPtr[j]>>(2*8-dst_depth)));\ } if(isBE(c->dstFormat)){ COPY816(AV_WB16) } else { COPY816(AV_WL16) } dstPtr2 += dstStride[plane]/2; srcPtr += srcStride[plane]; } } else if (src_depth <= dst_depth) { for (i = 0; i < height; i++) { #define COPY_UP(r,w) \ if(shiftonly){\ for (j = 0; j < length; j++){ \ unsigned int v= r(&srcPtr2[j]);\ w(&dstPtr2[j], v<<(dst_depth-src_depth));\ }\ }else{\ for (j = 0; j < length; j++){ \ unsigned int v= r(&srcPtr2[j]);\ w(&dstPtr2[j], (v<<(dst_depth-src_depth)) | \ (v>>(2*src_depth-dst_depth)));\ }\ } if(isBE(c->srcFormat)){ if(isBE(c->dstFormat)){ COPY_UP(AV_RB16, AV_WB16) } else { COPY_UP(AV_RB16, AV_WL16) } } else { if(isBE(c->dstFormat)){ COPY_UP(AV_RL16, AV_WB16) } else { COPY_UP(AV_RL16, AV_WL16) } } dstPtr2 += dstStride[plane]/2; srcPtr2 += srcStride[plane]/2; } } else { if(isBE(c->srcFormat) == HAVE_BIGENDIAN){ if(isBE(c->dstFormat) == HAVE_BIGENDIAN){ DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, , ) } else { DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, , av_bswap16) } }else{ if(isBE(c->dstFormat) == HAVE_BIGENDIAN){ DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, av_bswap16, ) } else { DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, av_bswap16, av_bswap16) } } } } 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] = av_bswap16(((const uint16_t*)srcPtr)[j]); srcPtr+= srcStride[plane]; dstPtr+= dstStride[plane]; } } else if (dstStride[plane] == srcStride[plane] && srcStride[plane] > 0 && srcStride[plane] == length) { 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; } void ff_get_unscaled_swscale(SwsContext *c) { const enum PixelFormat srcFormat = c->srcFormat; const enum PixelFormat dstFormat = c->dstFormat; const int flags = c->flags; const int dstH = c->dstH; int needsDither; needsDither= isAnyRGB(dstFormat) && c->dstFormatBpp < 24 && (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat))); /* 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) && isAnyRGB(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 ( isAnyRGB(srcFormat) && isAnyRGB(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 && srcFormat != PIX_FMT_RGB48LE && dstFormat != PIX_FMT_RGB48LE && srcFormat != PIX_FMT_RGB48BE && dstFormat != PIX_FMT_RGB48BE && srcFormat != PIX_FMT_BGR48LE && dstFormat != PIX_FMT_BGR48LE && srcFormat != PIX_FMT_BGR48BE && dstFormat != PIX_FMT_BGR48BE && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)))) c->swScale= rgbToRgbWrapper; 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= palToRgbWrapper; 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= yuyvToYuv420Wrapper; if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P)) c->swScale= uyvyToYuv420Wrapper; if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P) c->swScale= yuyvToYuv422Wrapper; if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P) c->swScale= uyvyToYuv422Wrapper; /* 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= packedCopyWrapper; else /* Planar YUV or gray */ c->swScale= planarCopyWrapper; } if (ARCH_BFIN) ff_bfin_get_unscaled_swscale(c); if (HAVE_ALTIVEC) ff_swscale_get_unscaled_altivec(c); } 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; } } static int check_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, const int linesizes[4]) { const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; int i; for (i = 0; i < 4; i++) { int plane = desc->comp[i].plane; if (!data[plane] || !linesizes[plane]) return 0; } return 1; } /** * 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(struct SwsContext *c, const uint8_t* const srcSlice[], const int srcStride[], int srcSliceY, int srcSliceH, uint8_t* const dst[], const int dstStride[]) { int i; const uint8_t* src2[4]= {srcSlice[0], srcSlice[1], srcSlice[2], srcSlice[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 (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) { av_log(c, AV_LOG_ERROR, "bad src image pointers\n"); return 0; } if (!check_image_pointers(dst, c->dstFormat, dstStride)) { av_log(c, AV_LOG_ERROR, "bad dst image pointers\n"); 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, a = 0xff; if(c->srcFormat == PIX_FMT_PAL8) { p=((const uint32_t*)(srcSlice[1]))[i]; a= (p>>24)&0xFF; 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 if(c->srcFormat == PIX_FMT_GRAY8 || c->srcFormat == PIX_FMT_GRAY8A) { r = g = b = i; } 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) + (a<<24); switch(c->dstFormat) { case PIX_FMT_BGR32: #if !HAVE_BIGENDIAN case PIX_FMT_RGB24: #endif c->pal_rgb[i]= r + (g<<8) + (b<<16) + (a<<24); break; case PIX_FMT_BGR32_1: #if HAVE_BIGENDIAN case PIX_FMT_BGR24: #endif c->pal_rgb[i]= a + (r<<8) + (g<<16) + (b<<24); break; case PIX_FMT_RGB32_1: #if HAVE_BIGENDIAN case PIX_FMT_RGB24: #endif c->pal_rgb[i]= a + (b<<8) + (g<<16) + (r<<24); break; case PIX_FMT_RGB32: #if !HAVE_BIGENDIAN case PIX_FMT_BGR24: #endif default: c->pal_rgb[i]= b + (g<<8) + (r<<16) + (a<<24); } } } // 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); } } /* Convert the palette to the same packed 32-bit format as the palette */ void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette) { int i; for (i=0; i<num_pixels; i++) ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]]; } /* Palette format: ABCD -> dst format: ABC */ void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette) { int i; for (i=0; i<num_pixels; i++) { //FIXME slow? dst[0]= palette[src[i]*4+0]; dst[1]= palette[src[i]*4+1]; dst[2]= palette[src[i]*4+2]; dst+= 3; } }