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42ba12888b
When converting RGB format to RGB format with the same bits per sample, unscaled path performs conversion on the whole buffer at once. For non-multiple-of-16 BGR24 to RGB24 conversion it means that padding at the end of line will be converted too. Since it may be of arbitrary length (e.g. 8 bytes), operating on the whole buffer produces obviously wrong results. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
962 lines
38 KiB
C
962 lines
38 KiB
C
/*
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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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if (!conv) {
|
|
av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
|
|
sws_format_name(srcFormat), sws_format_name(dstFormat));
|
|
} else {
|
|
const uint8_t *srcPtr= src[0];
|
|
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 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(!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;
|
|
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;
|
|
}
|
|
}
|