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703 lines
28 KiB
703 lines
28 KiB
/* |
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* Copyright (C) 2001-2011 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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/avassert.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_128)[8][8] = { |
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{ 36, 68, 60, 92, 34, 66, 58, 90,}, |
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{ 100, 4,124, 28, 98, 2,122, 26,}, |
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{ 52, 84, 44, 76, 50, 82, 42, 74,}, |
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{ 116, 20,108, 12,114, 18,106, 10,}, |
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{ 32, 64, 56, 88, 38, 70, 62, 94,}, |
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{ 96, 0,120, 24,102, 6,126, 30,}, |
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{ 48, 80, 40, 72, 54, 86, 46, 78,}, |
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{ 112, 16,104, 8,118, 22,110, 14,}, |
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}; |
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DECLARE_ALIGNED(8, const uint8_t, ff_sws_pb_64)[8] = |
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{ 64, 64, 64, 64, 64, 64, 64, 64 }; |
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static av_always_inline void fillPlane(uint8_t* plane, int stride, |
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int width, int height, |
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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 hScale16To19_c(SwsContext *c, int16_t *_dst, int dstW, const uint8_t *_src, |
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const int16_t *filter, |
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const int32_t *filterPos, int filterSize) |
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{ |
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int i; |
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int32_t *dst = (int32_t *) _dst; |
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const uint16_t *src = (const uint16_t *) _src; |
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int bits = av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1; |
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int sh = bits - 4; |
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if((isAnyRGB(c->srcFormat) || c->srcFormat==PIX_FMT_PAL8) && av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1<15) |
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sh= 9; |
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for (i = 0; i < dstW; i++) { |
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int j; |
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int srcPos = filterPos[i]; |
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int val = 0; |
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for (j = 0; j < filterSize; j++) { |
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val += src[srcPos + j] * filter[filterSize * i + j]; |
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} |
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// filter=14 bit, input=16 bit, output=30 bit, >> 11 makes 19 bit |
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dst[i] = FFMIN(val >> sh, (1 << 19) - 1); |
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} |
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} |
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static void hScale16To15_c(SwsContext *c, int16_t *dst, int dstW, const uint8_t *_src, |
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const int16_t *filter, |
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const int32_t *filterPos, int filterSize) |
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{ |
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int i; |
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const uint16_t *src = (const uint16_t *) _src; |
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int sh = av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1; |
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if(sh<15) |
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sh= isAnyRGB(c->srcFormat) || c->srcFormat==PIX_FMT_PAL8 ? 13 : av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1; |
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for (i = 0; i < dstW; i++) { |
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int j; |
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int srcPos = filterPos[i]; |
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int val = 0; |
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for (j = 0; j < filterSize; j++) { |
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val += src[srcPos + j] * filter[filterSize * i + j]; |
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} |
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// filter=14 bit, input=16 bit, output=30 bit, >> 15 makes 15 bit |
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dst[i] = FFMIN(val >> sh, (1 << 15) - 1); |
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} |
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} |
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// bilinear / bicubic scaling |
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static void hScale8To15_c(SwsContext *c, int16_t *dst, int dstW, const uint8_t *src, |
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const int16_t *filter, const int32_t *filterPos, |
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int filterSize) |
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{ |
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int i; |
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for (i=0; i<dstW; i++) { |
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int j; |
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int srcPos= filterPos[i]; |
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int val=0; |
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for (j=0; j<filterSize; j++) { |
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val += ((int)src[srcPos + j])*filter[filterSize*i + j]; |
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} |
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//filter += hFilterSize; |
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dst[i] = FFMIN(val>>7, (1<<15)-1); // the cubic equation does overflow ... |
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//dst[i] = val>>7; |
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} |
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} |
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static void hScale8To19_c(SwsContext *c, int16_t *_dst, int dstW, const uint8_t *src, |
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const int16_t *filter, const int32_t *filterPos, |
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int filterSize) |
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{ |
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int i; |
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int32_t *dst = (int32_t *) _dst; |
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for (i=0; i<dstW; i++) { |
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int j; |
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int srcPos= filterPos[i]; |
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int val=0; |
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for (j=0; j<filterSize; j++) { |
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val += ((int)src[srcPos + j])*filter[filterSize*i + j]; |
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} |
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//filter += hFilterSize; |
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dst[i] = FFMIN(val>>3, (1<<19)-1); // the cubic equation does overflow ... |
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//dst[i] = val>>7; |
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} |
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} |
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//FIXME all pal and rgb srcFormats could do this convertion as well |
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//FIXME all scalers more complex than bilinear could do half of this transform |
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static void chrRangeToJpeg_c(int16_t *dstU, int16_t *dstV, int width) |
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{ |
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int i; |
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for (i = 0; i < width; i++) { |
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dstU[i] = (FFMIN(dstU[i],30775)*4663 - 9289992)>>12; //-264 |
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dstV[i] = (FFMIN(dstV[i],30775)*4663 - 9289992)>>12; //-264 |
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} |
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} |
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static void chrRangeFromJpeg_c(int16_t *dstU, int16_t *dstV, int width) |
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{ |
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int i; |
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for (i = 0; i < width; i++) { |
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dstU[i] = (dstU[i]*1799 + 4081085)>>11; //1469 |
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dstV[i] = (dstV[i]*1799 + 4081085)>>11; //1469 |
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} |
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} |
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static void lumRangeToJpeg_c(int16_t *dst, int width) |
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{ |
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int i; |
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for (i = 0; i < width; i++) |
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dst[i] = (FFMIN(dst[i],30189)*19077 - 39057361)>>14; |
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} |
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static void lumRangeFromJpeg_c(int16_t *dst, int width) |
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{ |
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int i; |
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for (i = 0; i < width; i++) |
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dst[i] = (dst[i]*14071 + 33561947)>>14; |
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} |
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static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width) |
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{ |
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int i; |
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int32_t *dstU = (int32_t *) _dstU; |
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int32_t *dstV = (int32_t *) _dstV; |
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for (i = 0; i < width; i++) { |
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dstU[i] = (FFMIN(dstU[i],30775<<4)*4663 - (9289992<<4))>>12; //-264 |
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dstV[i] = (FFMIN(dstV[i],30775<<4)*4663 - (9289992<<4))>>12; //-264 |
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} |
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} |
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static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width) |
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{ |
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int i; |
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int32_t *dstU = (int32_t *) _dstU; |
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int32_t *dstV = (int32_t *) _dstV; |
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for (i = 0; i < width; i++) { |
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dstU[i] = (dstU[i]*1799 + (4081085<<4))>>11; //1469 |
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dstV[i] = (dstV[i]*1799 + (4081085<<4))>>11; //1469 |
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} |
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} |
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static void lumRangeToJpeg16_c(int16_t *_dst, int width) |
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{ |
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int i; |
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int32_t *dst = (int32_t *) _dst; |
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for (i = 0; i < width; i++) |
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dst[i] = (FFMIN(dst[i],30189<<4)*4769 - (39057361<<2))>>12; |
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} |
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static void lumRangeFromJpeg16_c(int16_t *_dst, int width) |
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{ |
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int i; |
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int32_t *dst = (int32_t *) _dst; |
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for (i = 0; i < width; i++) |
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dst[i] = (dst[i]*(14071/4) + (33561947<<4)/4)>>12; |
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} |
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static void hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth, |
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const uint8_t *src, int srcW, int xInc) |
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{ |
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int i; |
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unsigned int xpos=0; |
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for (i=0;i<dstWidth;i++) { |
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register unsigned int xx=xpos>>16; |
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register unsigned int xalpha=(xpos&0xFFFF)>>9; |
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dst[i]= (src[xx]<<7) + (src[xx+1] - src[xx])*xalpha; |
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xpos+=xInc; |
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} |
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for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--) |
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dst[i] = src[srcW-1]*128; |
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} |
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// *** horizontal scale Y line to temp buffer |
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static av_always_inline void hyscale(SwsContext *c, int16_t *dst, int dstWidth, |
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const uint8_t *src_in[4], int srcW, int xInc, |
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const int16_t *hLumFilter, |
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const int32_t *hLumFilterPos, int hLumFilterSize, |
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uint8_t *formatConvBuffer, |
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uint32_t *pal, int isAlpha) |
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{ |
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void (*toYV12)(uint8_t *, const uint8_t *, const uint8_t *, const uint8_t *, int, uint32_t *) = isAlpha ? c->alpToYV12 : c->lumToYV12; |
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void (*convertRange)(int16_t *, int) = isAlpha ? NULL : c->lumConvertRange; |
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const uint8_t *src = src_in[isAlpha ? 3 : 0]; |
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if (toYV12) { |
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toYV12(formatConvBuffer, src, src_in[1], src_in[2], srcW, pal); |
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src= formatConvBuffer; |
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} else if (c->readLumPlanar && !isAlpha) { |
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c->readLumPlanar(formatConvBuffer, src_in, srcW); |
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src = formatConvBuffer; |
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} |
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if (!c->hyscale_fast) { |
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c->hyScale(c, dst, dstWidth, src, hLumFilter, hLumFilterPos, hLumFilterSize); |
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} else { // fast bilinear upscale / crap downscale |
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c->hyscale_fast(c, dst, dstWidth, src, srcW, xInc); |
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} |
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if (convertRange) |
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convertRange(dst, dstWidth); |
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} |
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static void hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2, |
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int dstWidth, const uint8_t *src1, |
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const uint8_t *src2, int srcW, int xInc) |
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{ |
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int i; |
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unsigned int xpos=0; |
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for (i=0;i<dstWidth;i++) { |
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register unsigned int xx=xpos>>16; |
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register unsigned int xalpha=(xpos&0xFFFF)>>9; |
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dst1[i]=(src1[xx]*(xalpha^127)+src1[xx+1]*xalpha); |
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dst2[i]=(src2[xx]*(xalpha^127)+src2[xx+1]*xalpha); |
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xpos+=xInc; |
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} |
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for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--) { |
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dst1[i] = src1[srcW-1]*128; |
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dst2[i] = src2[srcW-1]*128; |
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} |
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} |
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static av_always_inline void hcscale(SwsContext *c, int16_t *dst1, int16_t *dst2, int dstWidth, |
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const uint8_t *src_in[4], |
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int srcW, int xInc, const int16_t *hChrFilter, |
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const int32_t *hChrFilterPos, int hChrFilterSize, |
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uint8_t *formatConvBuffer, uint32_t *pal) |
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{ |
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const uint8_t *src1 = src_in[1], *src2 = src_in[2]; |
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if (c->chrToYV12) { |
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uint8_t *buf2 = formatConvBuffer + FFALIGN(srcW*2+78, 16); |
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c->chrToYV12(formatConvBuffer, buf2, src_in[0], src1, src2, srcW, pal); |
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src1= formatConvBuffer; |
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src2= buf2; |
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} else if (c->readChrPlanar) { |
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uint8_t *buf2 = formatConvBuffer + FFALIGN(srcW*2+78, 16); |
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c->readChrPlanar(formatConvBuffer, buf2, src_in, srcW); |
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src1= formatConvBuffer; |
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src2= buf2; |
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} |
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if (!c->hcscale_fast) { |
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c->hcScale(c, dst1, dstWidth, src1, hChrFilter, hChrFilterPos, hChrFilterSize); |
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c->hcScale(c, dst2, dstWidth, src2, hChrFilter, hChrFilterPos, hChrFilterSize); |
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} else { // fast bilinear upscale / crap downscale |
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c->hcscale_fast(c, dst1, dst2, dstWidth, src1, src2, srcW, xInc); |
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} |
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if (c->chrConvertRange) |
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c->chrConvertRange(dst1, dst2, dstWidth); |
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} |
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#define DEBUG_SWSCALE_BUFFERS 0 |
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#define DEBUG_BUFFERS(...) if (DEBUG_SWSCALE_BUFFERS) av_log(c, AV_LOG_DEBUG, __VA_ARGS__) |
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static int swScale(SwsContext *c, const uint8_t* src[], |
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int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dst[], int dstStride[]) |
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{ |
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/* load a few things into local vars to make the code more readable? and faster */ |
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const int srcW= c->srcW; |
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const int dstW= c->dstW; |
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const int dstH= c->dstH; |
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const int chrDstW= c->chrDstW; |
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const int chrSrcW= c->chrSrcW; |
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const int lumXInc= c->lumXInc; |
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const int chrXInc= c->chrXInc; |
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const enum PixelFormat dstFormat= c->dstFormat; |
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const int flags= c->flags; |
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int32_t *vLumFilterPos= c->vLumFilterPos; |
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int32_t *vChrFilterPos= c->vChrFilterPos; |
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int32_t *hLumFilterPos= c->hLumFilterPos; |
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int32_t *hChrFilterPos= c->hChrFilterPos; |
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int16_t *hLumFilter= c->hLumFilter; |
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int16_t *hChrFilter= c->hChrFilter; |
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int32_t *lumMmxFilter= c->lumMmxFilter; |
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int32_t *chrMmxFilter= c->chrMmxFilter; |
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const int vLumFilterSize= c->vLumFilterSize; |
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const int vChrFilterSize= c->vChrFilterSize; |
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const int hLumFilterSize= c->hLumFilterSize; |
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const int hChrFilterSize= c->hChrFilterSize; |
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int16_t **lumPixBuf= c->lumPixBuf; |
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int16_t **chrUPixBuf= c->chrUPixBuf; |
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int16_t **chrVPixBuf= c->chrVPixBuf; |
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int16_t **alpPixBuf= c->alpPixBuf; |
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const int vLumBufSize= c->vLumBufSize; |
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const int vChrBufSize= c->vChrBufSize; |
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uint8_t *formatConvBuffer= c->formatConvBuffer; |
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const int chrSrcSliceY= srcSliceY >> c->chrSrcVSubSample; |
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const int chrSrcSliceH= -((-srcSliceH) >> c->chrSrcVSubSample); |
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int lastDstY; |
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uint32_t *pal=c->pal_yuv; |
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int should_dither= isNBPS(c->srcFormat) || is16BPS(c->srcFormat); |
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yuv2planar1_fn yuv2plane1 = c->yuv2plane1; |
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yuv2planarX_fn yuv2planeX = c->yuv2planeX; |
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yuv2interleavedX_fn yuv2nv12cX = c->yuv2nv12cX; |
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yuv2packed1_fn yuv2packed1 = c->yuv2packed1; |
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yuv2packed2_fn yuv2packed2 = c->yuv2packed2; |
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yuv2packedX_fn yuv2packedX = c->yuv2packedX; |
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/* vars which will change and which we need to store back in the context */ |
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int dstY= c->dstY; |
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int lumBufIndex= c->lumBufIndex; |
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int chrBufIndex= c->chrBufIndex; |
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int lastInLumBuf= c->lastInLumBuf; |
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int lastInChrBuf= c->lastInChrBuf; |
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if (isPacked(c->srcFormat)) { |
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src[0]= |
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src[1]= |
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src[2]= |
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src[3]= src[0]; |
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srcStride[0]= |
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srcStride[1]= |
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srcStride[2]= |
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srcStride[3]= srcStride[0]; |
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} |
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srcStride[1]<<= c->vChrDrop; |
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srcStride[2]<<= c->vChrDrop; |
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DEBUG_BUFFERS("swScale() %p[%d] %p[%d] %p[%d] %p[%d] -> %p[%d] %p[%d] %p[%d] %p[%d]\n", |
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src[0], srcStride[0], src[1], srcStride[1], src[2], srcStride[2], src[3], srcStride[3], |
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dst[0], dstStride[0], dst[1], dstStride[1], dst[2], dstStride[2], dst[3], dstStride[3]); |
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DEBUG_BUFFERS("srcSliceY: %d srcSliceH: %d dstY: %d dstH: %d\n", |
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srcSliceY, srcSliceH, dstY, dstH); |
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DEBUG_BUFFERS("vLumFilterSize: %d vLumBufSize: %d vChrFilterSize: %d vChrBufSize: %d\n", |
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vLumFilterSize, vLumBufSize, vChrFilterSize, vChrBufSize); |
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if (dstStride[0]%16 !=0 || dstStride[1]%16 !=0 || dstStride[2]%16 !=0 || dstStride[3]%16 != 0) { |
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static int warnedAlready=0; //FIXME move this into the context perhaps |
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if (flags & SWS_PRINT_INFO && !warnedAlready) { |
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av_log(c, AV_LOG_WARNING, "Warning: dstStride is not aligned!\n" |
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" ->cannot do aligned memory accesses anymore\n"); |
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warnedAlready=1; |
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} |
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} |
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if ((int)dst[0]%16 || (int)dst[1]%16 || (int)dst[2]%16 || (int)src[0]%16 || (int)src[1]%16 || (int)src[2]%16 |
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|| dstStride[0]%16 || dstStride[1]%16 || dstStride[2]%16 || dstStride[3]%16 |
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|| srcStride[0]%16 || srcStride[1]%16 || srcStride[2]%16 || srcStride[3]%16 |
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) { |
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static int warnedAlready=0; |
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int cpu_flags = av_get_cpu_flags(); |
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if (HAVE_MMX2 && (cpu_flags & AV_CPU_FLAG_SSE2) && !warnedAlready){ |
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av_log(c, AV_LOG_WARNING, "Warning: data is not aligned! This can lead to a speedloss\n"); |
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warnedAlready=1; |
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} |
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} |
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/* Note the user might start scaling the picture in the middle so this |
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will not get executed. This is not really intended but works |
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currently, so people might do it. */ |
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if (srcSliceY ==0) { |
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lumBufIndex=-1; |
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chrBufIndex=-1; |
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dstY=0; |
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lastInLumBuf= -1; |
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lastInChrBuf= -1; |
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} |
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if (!should_dither) { |
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c->chrDither8 = c->lumDither8 = ff_sws_pb_64; |
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} |
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lastDstY= dstY; |
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|
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for (;dstY < dstH; dstY++) { |
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const int chrDstY= dstY>>c->chrDstVSubSample; |
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uint8_t *dest[4] = { |
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dst[0] + dstStride[0] * dstY, |
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dst[1] + dstStride[1] * chrDstY, |
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dst[2] + dstStride[2] * chrDstY, |
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(CONFIG_SWSCALE_ALPHA && alpPixBuf) ? dst[3] + dstStride[3] * dstY : NULL, |
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}; |
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int use_mmx_vfilter= c->use_mmx_vfilter; |
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|
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const int firstLumSrcY= FFMAX(1 - vLumFilterSize, vLumFilterPos[dstY]); //First line needed as input |
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const int firstLumSrcY2= FFMAX(1 - vLumFilterSize, vLumFilterPos[FFMIN(dstY | ((1<<c->chrDstVSubSample) - 1), dstH-1)]); |
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const int firstChrSrcY= FFMAX(1 - vChrFilterSize, vChrFilterPos[chrDstY]); //First line needed as input |
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|
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// Last line needed as input |
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int lastLumSrcY = FFMIN(c->srcH, firstLumSrcY + vLumFilterSize) - 1; |
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int lastLumSrcY2 = FFMIN(c->srcH, firstLumSrcY2 + vLumFilterSize) - 1; |
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int lastChrSrcY = FFMIN(c->chrSrcH, firstChrSrcY + vChrFilterSize) - 1; |
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int enough_lines; |
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|
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//handle holes (FAST_BILINEAR & weird filters) |
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if (firstLumSrcY > lastInLumBuf) lastInLumBuf= firstLumSrcY-1; |
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if (firstChrSrcY > lastInChrBuf) lastInChrBuf= firstChrSrcY-1; |
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assert(firstLumSrcY >= lastInLumBuf - vLumBufSize + 1); |
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assert(firstChrSrcY >= lastInChrBuf - vChrBufSize + 1); |
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|
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DEBUG_BUFFERS("dstY: %d\n", dstY); |
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DEBUG_BUFFERS("\tfirstLumSrcY: %d lastLumSrcY: %d lastInLumBuf: %d\n", |
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firstLumSrcY, lastLumSrcY, lastInLumBuf); |
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DEBUG_BUFFERS("\tfirstChrSrcY: %d lastChrSrcY: %d lastInChrBuf: %d\n", |
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firstChrSrcY, lastChrSrcY, lastInChrBuf); |
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|
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// Do we have enough lines in this slice to output the dstY line |
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enough_lines = lastLumSrcY2 < srcSliceY + srcSliceH && lastChrSrcY < -((-srcSliceY - srcSliceH)>>c->chrSrcVSubSample); |
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|
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if (!enough_lines) { |
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lastLumSrcY = srcSliceY + srcSliceH - 1; |
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lastChrSrcY = chrSrcSliceY + chrSrcSliceH - 1; |
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DEBUG_BUFFERS("buffering slice: lastLumSrcY %d lastChrSrcY %d\n", |
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lastLumSrcY, lastChrSrcY); |
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} |
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|
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//Do horizontal scaling |
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while(lastInLumBuf < lastLumSrcY) { |
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const uint8_t *src1[4] = { |
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src[0] + (lastInLumBuf + 1 - srcSliceY) * srcStride[0], |
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src[1] + (lastInLumBuf + 1 - srcSliceY) * srcStride[1], |
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src[2] + (lastInLumBuf + 1 - srcSliceY) * srcStride[2], |
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src[3] + (lastInLumBuf + 1 - srcSliceY) * srcStride[3], |
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}; |
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lumBufIndex++; |
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assert(lumBufIndex < 2*vLumBufSize); |
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assert(lastInLumBuf + 1 - srcSliceY < srcSliceH); |
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assert(lastInLumBuf + 1 - srcSliceY >= 0); |
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hyscale(c, lumPixBuf[ lumBufIndex ], dstW, src1, srcW, lumXInc, |
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hLumFilter, hLumFilterPos, hLumFilterSize, |
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formatConvBuffer, |
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pal, 0); |
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if (CONFIG_SWSCALE_ALPHA && alpPixBuf) |
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hyscale(c, alpPixBuf[ lumBufIndex ], dstW, src1, srcW, |
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lumXInc, hLumFilter, hLumFilterPos, hLumFilterSize, |
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formatConvBuffer, |
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pal, 1); |
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lastInLumBuf++; |
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DEBUG_BUFFERS("\t\tlumBufIndex %d: lastInLumBuf: %d\n", |
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lumBufIndex, lastInLumBuf); |
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} |
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while(lastInChrBuf < lastChrSrcY) { |
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const uint8_t *src1[4] = { |
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src[0] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[0], |
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src[1] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[1], |
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src[2] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[2], |
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src[3] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[3], |
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}; |
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chrBufIndex++; |
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assert(chrBufIndex < 2*vChrBufSize); |
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assert(lastInChrBuf + 1 - chrSrcSliceY < (chrSrcSliceH)); |
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assert(lastInChrBuf + 1 - chrSrcSliceY >= 0); |
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//FIXME replace parameters through context struct (some at least) |
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if (c->needs_hcscale) |
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hcscale(c, chrUPixBuf[chrBufIndex], chrVPixBuf[chrBufIndex], |
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chrDstW, src1, chrSrcW, chrXInc, |
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hChrFilter, hChrFilterPos, hChrFilterSize, |
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formatConvBuffer, pal); |
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lastInChrBuf++; |
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DEBUG_BUFFERS("\t\tchrBufIndex %d: lastInChrBuf: %d\n", |
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chrBufIndex, lastInChrBuf); |
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} |
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//wrap buf index around to stay inside the ring buffer |
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if (lumBufIndex >= vLumBufSize) lumBufIndex-= vLumBufSize; |
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if (chrBufIndex >= vChrBufSize) chrBufIndex-= vChrBufSize; |
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if (!enough_lines) |
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break; //we can't output a dstY line so let's try with the next slice |
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#if HAVE_MMX |
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updateMMXDitherTables(c, dstY, lumBufIndex, chrBufIndex, lastInLumBuf, lastInChrBuf); |
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#endif |
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if (should_dither) { |
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c->chrDither8 = dither_8x8_128[chrDstY & 7]; |
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c->lumDither8 = dither_8x8_128[dstY & 7]; |
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} |
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if (dstY >= dstH-2) { |
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// hmm looks like we can't use MMX here without overwriting this array's tail |
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ff_sws_init_output_funcs(c, &yuv2plane1, &yuv2planeX, &yuv2nv12cX, |
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&yuv2packed1, &yuv2packed2, &yuv2packedX); |
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use_mmx_vfilter= 0; |
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} |
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|
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{ |
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const int16_t **lumSrcPtr= (const int16_t **)(void*) lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize; |
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const int16_t **chrUSrcPtr= (const int16_t **)(void*) chrUPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize; |
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const int16_t **chrVSrcPtr= (const int16_t **)(void*) chrVPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize; |
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const int16_t **alpSrcPtr= (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? (const int16_t **)(void*) alpPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize : NULL; |
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int16_t *vLumFilter= c->vLumFilter; |
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int16_t *vChrFilter= c->vChrFilter; |
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|
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if (isPlanarYUV(dstFormat) || (isGray(dstFormat) && !isALPHA(dstFormat))) { //YV12 like |
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const int chrSkipMask= (1<<c->chrDstVSubSample)-1; |
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|
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vLumFilter += dstY * vLumFilterSize; |
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vChrFilter += chrDstY * vChrFilterSize; |
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|
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// av_assert0(use_mmx_vfilter != ( |
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// yuv2planeX == yuv2planeX_10BE_c |
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// || yuv2planeX == yuv2planeX_10LE_c |
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// || yuv2planeX == yuv2planeX_9BE_c |
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// || yuv2planeX == yuv2planeX_9LE_c |
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// || yuv2planeX == yuv2planeX_16BE_c |
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// || yuv2planeX == yuv2planeX_16LE_c |
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// || yuv2planeX == yuv2planeX_8_c) || !ARCH_X86); |
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if(use_mmx_vfilter){ |
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vLumFilter= c->lumMmxFilter; |
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vChrFilter= c->chrMmxFilter; |
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} |
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|
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if (vLumFilterSize == 1) { |
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yuv2plane1(lumSrcPtr[0], dest[0], dstW, c->lumDither8, 0); |
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} else { |
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yuv2planeX(vLumFilter, vLumFilterSize, |
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lumSrcPtr, dest[0], dstW, c->lumDither8, 0); |
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} |
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|
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if (!((dstY&chrSkipMask) || isGray(dstFormat))) { |
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if (yuv2nv12cX) { |
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yuv2nv12cX(c, vChrFilter, vChrFilterSize, chrUSrcPtr, chrVSrcPtr, dest[1], chrDstW); |
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} else if (vChrFilterSize == 1) { |
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yuv2plane1(chrUSrcPtr[0], dest[1], chrDstW, c->chrDither8, 0); |
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yuv2plane1(chrVSrcPtr[0], dest[2], chrDstW, c->chrDither8, 3); |
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} else { |
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yuv2planeX(vChrFilter, vChrFilterSize, |
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chrUSrcPtr, dest[1], chrDstW, c->chrDither8, 0); |
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yuv2planeX(vChrFilter, vChrFilterSize, |
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chrVSrcPtr, dest[2], chrDstW, c->chrDither8, use_mmx_vfilter ? (c->uv_offx2 >> 1) : 3); |
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} |
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} |
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|
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if (CONFIG_SWSCALE_ALPHA && alpPixBuf){ |
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if(use_mmx_vfilter){ |
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vLumFilter= c->alpMmxFilter; |
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} |
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if (vLumFilterSize == 1) { |
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yuv2plane1(alpSrcPtr[0], dest[3], dstW, c->lumDither8, 0); |
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} else { |
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yuv2planeX(vLumFilter, vLumFilterSize, |
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alpSrcPtr, dest[3], dstW, c->lumDither8, 0); |
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} |
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} |
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} else { |
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assert(lumSrcPtr + vLumFilterSize - 1 < lumPixBuf + vLumBufSize*2); |
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assert(chrUSrcPtr + vChrFilterSize - 1 < chrUPixBuf + vChrBufSize*2); |
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if (c->yuv2packed1 && vLumFilterSize == 1 && vChrFilterSize <= 2) { //unscaled RGB |
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int chrAlpha = vChrFilterSize == 1 ? 0 : vChrFilter[2 * dstY + 1]; |
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yuv2packed1(c, *lumSrcPtr, chrUSrcPtr, chrVSrcPtr, |
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alpPixBuf ? *alpSrcPtr : NULL, |
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dest[0], dstW, chrAlpha, dstY); |
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} else if (c->yuv2packed2 && vLumFilterSize == 2 && vChrFilterSize == 2) { //bilinear upscale RGB |
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int lumAlpha = vLumFilter[2 * dstY + 1]; |
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int chrAlpha = vChrFilter[2 * dstY + 1]; |
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lumMmxFilter[2] = |
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lumMmxFilter[3] = vLumFilter[2 * dstY ] * 0x10001; |
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chrMmxFilter[2] = |
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chrMmxFilter[3] = vChrFilter[2 * chrDstY] * 0x10001; |
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yuv2packed2(c, lumSrcPtr, chrUSrcPtr, chrVSrcPtr, |
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alpPixBuf ? alpSrcPtr : NULL, |
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dest[0], dstW, lumAlpha, chrAlpha, dstY); |
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} else { //general RGB |
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yuv2packedX(c, vLumFilter + dstY * vLumFilterSize, |
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lumSrcPtr, vLumFilterSize, |
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vChrFilter + dstY * vChrFilterSize, |
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chrUSrcPtr, chrVSrcPtr, vChrFilterSize, |
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alpSrcPtr, dest[0], dstW, dstY); |
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} |
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} |
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} |
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} |
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|
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if (isPlanar(dstFormat) && isALPHA(dstFormat) && !alpPixBuf) |
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fillPlane(dst[3], dstStride[3], dstW, dstY-lastDstY, lastDstY, 255); |
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|
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#if HAVE_MMX2 |
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if (av_get_cpu_flags() & AV_CPU_FLAG_MMX2) |
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__asm__ volatile("sfence":::"memory"); |
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#endif |
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emms_c(); |
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|
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/* store changed local vars back in the context */ |
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c->dstY= dstY; |
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c->lumBufIndex= lumBufIndex; |
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c->chrBufIndex= chrBufIndex; |
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c->lastInLumBuf= lastInLumBuf; |
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c->lastInChrBuf= lastInChrBuf; |
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|
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return dstY - lastDstY; |
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} |
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|
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static av_cold void sws_init_swScale_c(SwsContext *c) |
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{ |
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enum PixelFormat srcFormat = c->srcFormat; |
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|
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ff_sws_init_output_funcs(c, &c->yuv2plane1, &c->yuv2planeX, |
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&c->yuv2nv12cX, &c->yuv2packed1, |
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&c->yuv2packed2, &c->yuv2packedX); |
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|
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ff_sws_init_input_funcs(c); |
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|
|
|
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if (c->srcBpc == 8) { |
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if (c->dstBpc <= 10) { |
|
c->hyScale = c->hcScale = hScale8To15_c; |
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if (c->flags & SWS_FAST_BILINEAR) { |
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c->hyscale_fast = hyscale_fast_c; |
|
c->hcscale_fast = hcscale_fast_c; |
|
} |
|
} else { |
|
c->hyScale = c->hcScale = hScale8To19_c; |
|
} |
|
} else { |
|
c->hyScale = c->hcScale = c->dstBpc > 10 ? hScale16To19_c : hScale16To15_c; |
|
} |
|
|
|
if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) { |
|
if (c->dstBpc <= 10) { |
|
if (c->srcRange) { |
|
c->lumConvertRange = lumRangeFromJpeg_c; |
|
c->chrConvertRange = chrRangeFromJpeg_c; |
|
} else { |
|
c->lumConvertRange = lumRangeToJpeg_c; |
|
c->chrConvertRange = chrRangeToJpeg_c; |
|
} |
|
} else { |
|
if (c->srcRange) { |
|
c->lumConvertRange = lumRangeFromJpeg16_c; |
|
c->chrConvertRange = chrRangeFromJpeg16_c; |
|
} else { |
|
c->lumConvertRange = lumRangeToJpeg16_c; |
|
c->chrConvertRange = chrRangeToJpeg16_c; |
|
} |
|
} |
|
} |
|
|
|
if (!(isGray(srcFormat) || isGray(c->dstFormat) || |
|
srcFormat == PIX_FMT_MONOBLACK || srcFormat == PIX_FMT_MONOWHITE)) |
|
c->needs_hcscale = 1; |
|
} |
|
|
|
SwsFunc ff_getSwsFunc(SwsContext *c) |
|
{ |
|
sws_init_swScale_c(c); |
|
|
|
if (HAVE_MMX) |
|
ff_sws_init_swScale_mmx(c); |
|
if (HAVE_ALTIVEC) |
|
ff_sws_init_swScale_altivec(c); |
|
|
|
return swScale; |
|
}
|
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|