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961 lines
38 KiB
961 lines
38 KiB
/* |
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* Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <inttypes.h> |
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#include <string.h> |
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#include <math.h> |
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#include <stdio.h> |
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#include "config.h" |
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#include <assert.h> |
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#include "swscale.h" |
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#include "swscale_internal.h" |
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#include "rgb2rgb.h" |
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#include "libavutil/intreadwrite.h" |
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#include "libavutil/cpu.h" |
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#include "libavutil/avutil.h" |
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#include "libavutil/mathematics.h" |
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#include "libavutil/bswap.h" |
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#include "libavutil/pixdesc.h" |
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DECLARE_ALIGNED(8, const uint8_t, dither_8x8_1)[8][8] = { |
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{ 0, 1, 0, 1, 0, 1, 0, 1,}, |
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{ 1, 0, 1, 0, 1, 0, 1, 0,}, |
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{ 0, 1, 0, 1, 0, 1, 0, 1,}, |
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{ 1, 0, 1, 0, 1, 0, 1, 0,}, |
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{ 0, 1, 0, 1, 0, 1, 0, 1,}, |
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{ 1, 0, 1, 0, 1, 0, 1, 0,}, |
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{ 0, 1, 0, 1, 0, 1, 0, 1,}, |
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{ 1, 0, 1, 0, 1, 0, 1, 0,}, |
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}; |
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DECLARE_ALIGNED(8, const uint8_t, dither_8x8_3)[8][8] = { |
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{ 1, 2, 1, 2, 1, 2, 1, 2,}, |
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{ 3, 0, 3, 0, 3, 0, 3, 0,}, |
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{ 1, 2, 1, 2, 1, 2, 1, 2,}, |
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{ 3, 0, 3, 0, 3, 0, 3, 0,}, |
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{ 1, 2, 1, 2, 1, 2, 1, 2,}, |
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{ 3, 0, 3, 0, 3, 0, 3, 0,}, |
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{ 1, 2, 1, 2, 1, 2, 1, 2,}, |
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{ 3, 0, 3, 0, 3, 0, 3, 0,}, |
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}; |
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DECLARE_ALIGNED(8, const uint8_t, dither_8x8_64)[8][8] = { |
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{ 18, 34, 30, 46, 17, 33, 29, 45,}, |
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{ 50, 2, 62, 14, 49, 1, 61, 13,}, |
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{ 26, 42, 22, 38, 25, 41, 21, 37,}, |
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{ 58, 10, 54, 6, 57, 9, 53, 5,}, |
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{ 16, 32, 28, 44, 19, 35, 31, 47,}, |
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{ 48, 0, 60, 12, 51, 3, 63, 15,}, |
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{ 24, 40, 20, 36, 27, 43, 23, 39,}, |
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{ 56, 8, 52, 4, 59, 11, 55, 7,}, |
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}; |
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extern const uint8_t dither_8x8_128[8][8]; |
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DECLARE_ALIGNED(8, const uint8_t, dither_8x8_256)[8][8] = { |
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{ 72, 136, 120, 184, 68, 132, 116, 180,}, |
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{ 200, 8, 248, 56, 196, 4, 244, 52,}, |
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{ 104, 168, 88, 152, 100, 164, 84, 148,}, |
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{ 232, 40, 216, 24, 228, 36, 212, 20,}, |
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{ 64, 128, 102, 176, 76, 140, 124, 188,}, |
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{ 192, 0, 240, 48, 204, 12, 252, 60,}, |
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{ 96, 160, 80, 144, 108, 172, 92, 156,}, |
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{ 224, 32, 208, 16, 236, 44, 220, 28,}, |
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}; |
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#define RGB2YUV_SHIFT 15 |
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#define BY ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5)) |
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#define BV (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5)) |
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#define BU ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5)) |
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#define GY ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5)) |
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#define GV (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5)) |
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#define GU (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5)) |
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#define RY ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5)) |
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#define RV ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5)) |
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#define RU (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5)) |
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static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val) |
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{ |
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int i; |
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uint8_t *ptr = plane + stride*y; |
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for (i=0; i<height; i++) { |
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memset(ptr, val, width); |
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ptr += stride; |
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} |
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} |
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static void copyPlane(const uint8_t *src, int srcStride, |
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int srcSliceY, int srcSliceH, int width, |
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uint8_t *dst, int dstStride) |
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{ |
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dst += dstStride * srcSliceY; |
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if (dstStride == srcStride && srcStride > 0) { |
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memcpy(dst, src, srcSliceH * dstStride); |
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} else { |
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int i; |
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for (i=0; i<srcSliceH; i++) { |
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memcpy(dst, src, width); |
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src += srcStride; |
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dst += dstStride; |
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} |
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} |
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} |
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static int planarToNv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dstParam[], int dstStride[]) |
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{ |
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uint8_t *dst = dstParam[1] + dstStride[1]*srcSliceY/2; |
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copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW, |
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dstParam[0], dstStride[0]); |
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if (c->dstFormat == PIX_FMT_NV12) |
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interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]); |
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else |
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interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]); |
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return srcSliceH; |
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} |
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static int planarToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dstParam[], int dstStride[]) |
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{ |
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uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY; |
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yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]); |
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return srcSliceH; |
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} |
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static int planarToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dstParam[], int dstStride[]) |
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{ |
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uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY; |
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yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]); |
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return srcSliceH; |
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} |
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static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dstParam[], int dstStride[]) |
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{ |
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uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY; |
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yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]); |
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return srcSliceH; |
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} |
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static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dstParam[], int dstStride[]) |
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{ |
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uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY; |
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yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]); |
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return srcSliceH; |
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} |
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static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dstParam[], int dstStride[]) |
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{ |
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uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY; |
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uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2; |
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uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2; |
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yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]); |
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if (dstParam[3]) |
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fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255); |
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return srcSliceH; |
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} |
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static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dstParam[], int dstStride[]) |
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{ |
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uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY; |
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uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY; |
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uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY; |
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yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]); |
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return srcSliceH; |
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} |
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static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dstParam[], int dstStride[]) |
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{ |
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uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY; |
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uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2; |
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uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2; |
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uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]); |
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if (dstParam[3]) |
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fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255); |
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return srcSliceH; |
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} |
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static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dstParam[], int dstStride[]) |
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{ |
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uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY; |
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uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY; |
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uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY; |
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uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]); |
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return srcSliceH; |
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} |
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static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette) |
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{ |
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int i; |
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for (i=0; i<num_pixels; i++) |
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((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | (src[(i<<1)+1] << 24); |
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} |
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static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette) |
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{ |
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int i; |
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for (i=0; i<num_pixels; i++) |
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((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | src[(i<<1)+1]; |
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} |
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static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette) |
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{ |
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int i; |
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for (i=0; i<num_pixels; i++) { |
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//FIXME slow? |
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dst[0]= palette[src[i<<1]*4+0]; |
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dst[1]= palette[src[i<<1]*4+1]; |
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dst[2]= palette[src[i<<1]*4+2]; |
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dst+= 3; |
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} |
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} |
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static int palToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dst[], int dstStride[]) |
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{ |
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const enum PixelFormat srcFormat= c->srcFormat; |
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const enum PixelFormat dstFormat= c->dstFormat; |
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void (*conv)(const uint8_t *src, uint8_t *dst, int num_pixels, |
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const uint8_t *palette)=NULL; |
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int i; |
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uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY; |
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const uint8_t *srcPtr= src[0]; |
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if (srcFormat == PIX_FMT_Y400A) { |
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switch (dstFormat) { |
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case PIX_FMT_RGB32 : conv = gray8aToPacked32; break; |
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case PIX_FMT_BGR32 : conv = gray8aToPacked32; break; |
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case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break; |
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case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break; |
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case PIX_FMT_RGB24 : conv = gray8aToPacked24; break; |
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case PIX_FMT_BGR24 : conv = gray8aToPacked24; break; |
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} |
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} else if (usePal(srcFormat)) { |
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switch (dstFormat) { |
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case PIX_FMT_RGB32 : conv = sws_convertPalette8ToPacked32; break; |
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case PIX_FMT_BGR32 : conv = sws_convertPalette8ToPacked32; break; |
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case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break; |
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case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break; |
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case PIX_FMT_RGB24 : conv = sws_convertPalette8ToPacked24; break; |
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case PIX_FMT_BGR24 : conv = sws_convertPalette8ToPacked24; break; |
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} |
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} |
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if (!conv) |
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av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n", |
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sws_format_name(srcFormat), sws_format_name(dstFormat)); |
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else { |
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for (i=0; i<srcSliceH; i++) { |
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conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb); |
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srcPtr+= srcStride[0]; |
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dstPtr+= dstStride[0]; |
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} |
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} |
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return srcSliceH; |
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} |
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#define isRGBA32(x) ( \ |
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(x) == PIX_FMT_ARGB \ |
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|| (x) == PIX_FMT_RGBA \ |
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|| (x) == PIX_FMT_BGRA \ |
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|| (x) == PIX_FMT_ABGR \ |
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) |
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/* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */ |
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static int rgbToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dst[], int dstStride[]) |
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{ |
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const enum PixelFormat srcFormat= c->srcFormat; |
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const enum PixelFormat dstFormat= c->dstFormat; |
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const int srcBpp= (c->srcFormatBpp + 7) >> 3; |
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const int dstBpp= (c->dstFormatBpp + 7) >> 3; |
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const int srcId= c->srcFormatBpp >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */ |
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const int dstId= c->dstFormatBpp >> 2; |
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void (*conv)(const uint8_t *src, uint8_t *dst, int src_size)=NULL; |
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#define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst) |
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if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) { |
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if ( CONV_IS(ABGR, RGBA) |
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|| CONV_IS(ARGB, BGRA) |
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|| CONV_IS(BGRA, ARGB) |
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|| CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210; |
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else if (CONV_IS(ABGR, ARGB) |
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|| CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321; |
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else if (CONV_IS(ABGR, BGRA) |
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|| CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230; |
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else if (CONV_IS(BGRA, RGBA) |
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|| CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103; |
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else if (CONV_IS(BGRA, ABGR) |
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|| CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012; |
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} else |
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/* BGR -> BGR */ |
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if ( (isBGRinInt(srcFormat) && isBGRinInt(dstFormat)) |
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|| (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) { |
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switch(srcId | (dstId<<4)) { |
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case 0x34: conv= rgb16to15; break; |
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case 0x36: conv= rgb24to15; break; |
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case 0x38: conv= rgb32to15; break; |
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case 0x43: conv= rgb15to16; break; |
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case 0x46: conv= rgb24to16; break; |
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case 0x48: conv= rgb32to16; break; |
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case 0x63: conv= rgb15to24; break; |
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case 0x64: conv= rgb16to24; break; |
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case 0x68: conv= rgb32to24; break; |
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case 0x83: conv= rgb15to32; break; |
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case 0x84: conv= rgb16to32; break; |
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case 0x86: conv= rgb24to32; break; |
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} |
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} else if ( (isBGRinInt(srcFormat) && isRGBinInt(dstFormat)) |
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|| (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) { |
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switch(srcId | (dstId<<4)) { |
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case 0x33: conv= rgb15tobgr15; break; |
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case 0x34: conv= rgb16tobgr15; break; |
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case 0x36: conv= rgb24tobgr15; break; |
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case 0x38: conv= rgb32tobgr15; break; |
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case 0x43: conv= rgb15tobgr16; break; |
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case 0x44: conv= rgb16tobgr16; break; |
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case 0x46: conv= rgb24tobgr16; break; |
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case 0x48: conv= rgb32tobgr16; break; |
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case 0x63: conv= rgb15tobgr24; break; |
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case 0x64: conv= rgb16tobgr24; break; |
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case 0x66: conv= rgb24tobgr24; break; |
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case 0x68: conv= rgb32tobgr24; break; |
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case 0x83: conv= rgb15tobgr32; break; |
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case 0x84: conv= rgb16tobgr32; break; |
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case 0x86: conv= rgb24tobgr32; break; |
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} |
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} |
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|
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if (!conv) { |
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av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n", |
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sws_format_name(srcFormat), sws_format_name(dstFormat)); |
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} else { |
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const uint8_t *srcPtr= src[0]; |
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uint8_t *dstPtr= dst[0]; |
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if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) && !isRGBA32(dstFormat)) |
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srcPtr += ALT32_CORR; |
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|
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if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) && !isRGBA32(srcFormat)) |
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dstPtr += ALT32_CORR; |
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|
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if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0 && !(srcStride[0] % srcBpp)) |
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conv(srcPtr, dstPtr + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]); |
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else { |
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int i; |
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dstPtr += dstStride[0]*srcSliceY; |
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|
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for (i=0; i<srcSliceH; i++) { |
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conv(srcPtr, dstPtr, c->srcW*srcBpp); |
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srcPtr+= srcStride[0]; |
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dstPtr+= dstStride[0]; |
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} |
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} |
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} |
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return srcSliceH; |
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} |
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|
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static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dst[], int dstStride[]) |
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{ |
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rgb24toyv12( |
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src[0], |
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dst[0]+ srcSliceY *dstStride[0], |
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dst[1]+(srcSliceY>>1)*dstStride[1], |
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dst[2]+(srcSliceY>>1)*dstStride[2], |
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c->srcW, srcSliceH, |
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dstStride[0], dstStride[1], srcStride[0]); |
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if (dst[3]) |
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fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255); |
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return srcSliceH; |
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} |
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|
|
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 clip9(x) av_clip_uintp2(x, 9) |
|
#define clip10(x) av_clip_uintp2(x, 10) |
|
#define DITHER_COPY(dst, dstStride, wfunc, src, srcStride, rfunc, dithers, shift, clip) \ |
|
for (i = 0; i < height; i++) { \ |
|
const uint8_t *dither = dithers[i & 7]; \ |
|
for (j = 0; j < length - 7; j += 8) { \ |
|
wfunc(&dst[j + 0], clip((rfunc(&src[j + 0]) + dither[0]) >> shift)); \ |
|
wfunc(&dst[j + 1], clip((rfunc(&src[j + 1]) + dither[1]) >> shift)); \ |
|
wfunc(&dst[j + 2], clip((rfunc(&src[j + 2]) + dither[2]) >> shift)); \ |
|
wfunc(&dst[j + 3], clip((rfunc(&src[j + 3]) + dither[3]) >> shift)); \ |
|
wfunc(&dst[j + 4], clip((rfunc(&src[j + 4]) + dither[4]) >> shift)); \ |
|
wfunc(&dst[j + 5], clip((rfunc(&src[j + 5]) + dither[5]) >> shift)); \ |
|
wfunc(&dst[j + 6], clip((rfunc(&src[j + 6]) + dither[6]) >> shift)); \ |
|
wfunc(&dst[j + 7], clip((rfunc(&src[j + 7]) + dither[7]) >> shift)); \ |
|
} \ |
|
for (; j < length; j++) \ |
|
wfunc(&dst[j], (rfunc(&src[j]) + dither[j & 7]) >> 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(is9_OR_10BPS(c->srcFormat)) { |
|
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; |
|
|
|
if (is16BPS(c->dstFormat)) { |
|
uint16_t *dstPtr2 = (uint16_t*)dstPtr; |
|
#define COPY9_OR_10TO16(rfunc, wfunc) \ |
|
for (i = 0; i < height; i++) { \ |
|
for (j = 0; j < length; j++) { \ |
|
int srcpx = rfunc(&srcPtr2[j]); \ |
|
wfunc(&dstPtr2[j], (srcpx<<(16-src_depth)) | (srcpx>>(2*src_depth-16))); \ |
|
} \ |
|
dstPtr2 += dstStride[plane]/2; \ |
|
srcPtr2 += srcStride[plane]/2; \ |
|
} |
|
if (isBE(c->dstFormat)) { |
|
if (isBE(c->srcFormat)) { |
|
COPY9_OR_10TO16(AV_RB16, AV_WB16); |
|
} else { |
|
COPY9_OR_10TO16(AV_RL16, AV_WB16); |
|
} |
|
} else { |
|
if (isBE(c->srcFormat)) { |
|
COPY9_OR_10TO16(AV_RB16, AV_WL16); |
|
} else { |
|
COPY9_OR_10TO16(AV_RL16, AV_WL16); |
|
} |
|
} |
|
} else if (is9_OR_10BPS(c->dstFormat)) { |
|
uint16_t *dstPtr2 = (uint16_t*)dstPtr; |
|
#define COPY9_OR_10TO9_OR_10(loop) \ |
|
for (i = 0; i < height; i++) { \ |
|
for (j = 0; j < length; j++) { \ |
|
loop; \ |
|
} \ |
|
dstPtr2 += dstStride[plane]/2; \ |
|
srcPtr2 += srcStride[plane]/2; \ |
|
} |
|
#define COPY9_OR_10TO9_OR_10_2(rfunc, wfunc) \ |
|
if (dst_depth > src_depth) { \ |
|
COPY9_OR_10TO9_OR_10(int srcpx = rfunc(&srcPtr2[j]); \ |
|
wfunc(&dstPtr2[j], (srcpx << 1) | (srcpx >> 9))); \ |
|
} else if (dst_depth < src_depth) { \ |
|
DITHER_COPY(dstPtr2, dstStride[plane]/2, wfunc, \ |
|
srcPtr2, srcStride[plane]/2, rfunc, \ |
|
dither_8x8_1, 1, clip9); \ |
|
} else { \ |
|
COPY9_OR_10TO9_OR_10(wfunc(&dstPtr2[j], rfunc(&srcPtr2[j]))); \ |
|
} |
|
if (isBE(c->dstFormat)) { |
|
if (isBE(c->srcFormat)) { |
|
COPY9_OR_10TO9_OR_10_2(AV_RB16, AV_WB16); |
|
} else { |
|
COPY9_OR_10TO9_OR_10_2(AV_RL16, AV_WB16); |
|
} |
|
} else { |
|
if (isBE(c->srcFormat)) { |
|
COPY9_OR_10TO9_OR_10_2(AV_RB16, AV_WL16); |
|
} else { |
|
COPY9_OR_10TO9_OR_10_2(AV_RL16, AV_WL16); |
|
} |
|
} |
|
} else { |
|
#define W8(a, b) { *(a) = (b); } |
|
#define COPY9_OR_10TO8(rfunc) \ |
|
if (src_depth == 9) { \ |
|
DITHER_COPY(dstPtr, dstStride[plane], W8, \ |
|
srcPtr2, srcStride[plane]/2, rfunc, \ |
|
dither_8x8_1, 1, av_clip_uint8); \ |
|
} else { \ |
|
DITHER_COPY(dstPtr, dstStride[plane], W8, \ |
|
srcPtr2, srcStride[plane]/2, rfunc, \ |
|
dither_8x8_3, 2, av_clip_uint8); \ |
|
} |
|
if (isBE(c->srcFormat)) { |
|
COPY9_OR_10TO8(AV_RB16); |
|
} else { |
|
COPY9_OR_10TO8(AV_RL16); |
|
} |
|
} |
|
} else if(is9_OR_10BPS(c->dstFormat)) { |
|
const int dst_depth = av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1+1; |
|
uint16_t *dstPtr2 = (uint16_t*)dstPtr; |
|
|
|
if (is16BPS(c->srcFormat)) { |
|
const uint16_t *srcPtr2 = (const uint16_t*)srcPtr; |
|
#define COPY16TO9_OR_10(rfunc, wfunc) \ |
|
if (dst_depth == 9) { \ |
|
DITHER_COPY(dstPtr2, dstStride[plane]/2, wfunc, \ |
|
srcPtr2, srcStride[plane]/2, rfunc, \ |
|
dither_8x8_128, 7, clip9); \ |
|
} else { \ |
|
DITHER_COPY(dstPtr2, dstStride[plane]/2, wfunc, \ |
|
srcPtr2, srcStride[plane]/2, rfunc, \ |
|
dither_8x8_64, 6, clip10); \ |
|
} |
|
if (isBE(c->dstFormat)) { |
|
if (isBE(c->srcFormat)) { |
|
COPY16TO9_OR_10(AV_RB16, AV_WB16); |
|
} else { |
|
COPY16TO9_OR_10(AV_RL16, AV_WB16); |
|
} |
|
} else { |
|
if (isBE(c->srcFormat)) { |
|
COPY16TO9_OR_10(AV_RB16, AV_WL16); |
|
} else { |
|
COPY16TO9_OR_10(AV_RL16, AV_WL16); |
|
} |
|
} |
|
} else /* 8bit */ { |
|
#define COPY8TO9_OR_10(wfunc) \ |
|
for (i = 0; i < height; i++) { \ |
|
for (j = 0; j < length; j++) { \ |
|
const int srcpx = srcPtr[j]; \ |
|
wfunc(&dstPtr2[j], (srcpx<<(dst_depth-8)) | (srcpx >> (16-dst_depth))); \ |
|
} \ |
|
dstPtr2 += dstStride[plane]/2; \ |
|
srcPtr += srcStride[plane]; \ |
|
} |
|
if (isBE(c->dstFormat)) { |
|
COPY8TO9_OR_10(AV_WB16); |
|
} else { |
|
COPY8TO9_OR_10(AV_WL16); |
|
} |
|
} |
|
} else if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) { |
|
const uint16_t *srcPtr2 = (const uint16_t*)srcPtr; |
|
#define COPY16TO8(rfunc) \ |
|
DITHER_COPY(dstPtr, dstStride[plane], W8, \ |
|
srcPtr2, srcStride[plane]/2, rfunc, \ |
|
dither_8x8_256, 8, av_clip_uint8); |
|
if (isBE(c->srcFormat)) { |
|
COPY16TO8(AV_RB16); |
|
} else { |
|
COPY16TO8(AV_RL16); |
|
} |
|
} 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] = 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 (!isPlanar(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 attribute_align_arg 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; |
|
if(c->srcFormat == PIX_FMT_PAL8) { |
|
p=((const uint32_t*)(srcSlice[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 if(c->srcFormat == PIX_FMT_GRAY8 || c->srcFormat == PIX_FMT_Y400A) { |
|
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); |
|
|
|
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); |
|
} |
|
} |
|
|
|
/* 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; |
|
} |
|
}
|
|
|