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Diffstat (limited to 'libswscale/swscale_unscaled.c')
| -rw-r--r-- | libswscale/swscale_unscaled.c | 849 |
1 files changed, 849 insertions, 0 deletions
diff --git a/libswscale/swscale_unscaled.c b/libswscale/swscale_unscaled.c new file mode 100644 index 0000000000..e0c4b25846 --- /dev/null +++ b/libswscale/swscale_unscaled.c @@ -0,0 +1,849 @@ +/* + * 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; + + 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++) { + if(isBE(c->dstFormat)){ + for (j = 0; j < length; j++) + AV_WB16(&dstPtr2[j], (srcPtr[j]<<(dst_depth-8)) | + (srcPtr[j]>>(2*8-dst_depth))); + } else { + for (j = 0; j < length; j++) + AV_WL16(&dstPtr2[j], (srcPtr[j]<<(dst_depth-8)) | + (srcPtr[j]>>(2*8-dst_depth))); + } + dstPtr2 += dstStride[plane]/2; + srcPtr += srcStride[plane]; + } + } else if (src_depth <= dst_depth) { + for (i = 0; i < height; i++) { +#define COPY_UP(r,w) \ + 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(SwsContext *c, const uint8_t* const src[], const int srcStride[], int srcSliceY, + int srcSliceH, uint8_t* const dst[], const 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 (!check_image_pointers(src, 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*)(src[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); + } +} + +#if LIBSWSCALE_VERSION_MAJOR < 1 +int sws_scale_ordered(SwsContext *c, const uint8_t* const src[], int srcStride[], int srcSliceY, + int srcSliceH, uint8_t* dst[], int dstStride[]) +{ + return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride); +} +#endif + +/* 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; + } +} |