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libswscale/utils.c

a4388ebd	/* * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at> * * This file is part of FFmpeg. *
819ee683	* FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version.
a4388ebd	* * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of
819ee683	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details.
a4388ebd	*
819ee683	* You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software
a4388ebd	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
ef0ee7f6	#include "config.h"
26e8895b	#define _DEFAULT_SOURCE
ef0ee7f6	#define _SVID_SOURCE // needed for MAP_ANONYMOUS
262b6dba	#define _DARWIN_C_SOURCE // needed for MAP_ANON
a4388ebd	#include <inttypes.h> #include <math.h> #include <stdio.h>
ef0ee7f6	#include <string.h>
29ccc641	#if HAVE_MMAP
a4388ebd	#include <sys/mman.h> #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS) #define MAP_ANONYMOUS MAP_ANON #endif #endif #if HAVE_VIRTUALALLOC #define WIN32_LEAN_AND_MEAN #include <windows.h> #endif
ef0ee7f6
5a6e3c03	#include "libavutil/attributes.h"
367d9b29	#include "libavutil/avassert.h"
a4388ebd	#include "libavutil/avutil.h" #include "libavutil/bswap.h"
ef0ee7f6	#include "libavutil/cpu.h"
fba89461	#include "libavutil/imgutils.h"
ef0ee7f6	#include "libavutil/intreadwrite.h"
c8905e0d	#include "libavutil/libm.h"
5089ce1b	#include "libavutil/mathematics.h"
f34fcdc8	#include "libavutil/opt.h"
a4388ebd	#include "libavutil/pixdesc.h"
263eb76b	#include "libavutil/aarch64/cpu.h"
f61bece6	#include "libavutil/ppc/cpu.h"
c318626c	#include "libavutil/x86/asm.h"
e0c6cce4	#include "libavutil/x86/cpu.h"
3b905b9f	// We have to implement deprecated functions until they are removed, this is the // simplest way to prevent warnings #undef attribute_deprecated #define attribute_deprecated
ef0ee7f6	#include "rgb2rgb.h" #include "swscale.h" #include "swscale_internal.h"
a4388ebd
3b905b9f	#if !FF_API_SWS_VECTOR static SwsVector sws_getIdentityVec(void); static void sws_addVec(SwsVector a, SwsVector b); static void sws_shiftVec(SwsVector a, int shift); static void sws_printVec2(SwsVector a, AVClass log_ctx, int log_level); #endif
d5f5e516	static void handle_formats(SwsContext *c);
a4388ebd	unsigned swscale_version(void) {
0f91a577	av_assert0(LIBSWSCALE_VERSION_MICRO >= 100);
a4388ebd	return LIBSWSCALE_VERSION_INT; } const char *swscale_configuration(void) {
e528cdac	return FFMPEG_CONFIGURATION;
a4388ebd	} const char *swscale_license(void) { #define LICENSE_PREFIX "libswscale license: "
0cb88628	return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
a4388ebd	}
c899bedb	typedef struct FormatEntry {
c1eb3e7f	uint8_t is_supported_in :1; uint8_t is_supported_out :1; uint8_t is_supported_endianness :1;
c899bedb	} FormatEntry;
716d413c	static const FormatEntry format_entries[AV_PIX_FMT_NB] = { [AV_PIX_FMT_YUV420P] = { 1, 1 }, [AV_PIX_FMT_YUYV422] = { 1, 1 }, [AV_PIX_FMT_RGB24] = { 1, 1 }, [AV_PIX_FMT_BGR24] = { 1, 1 }, [AV_PIX_FMT_YUV422P] = { 1, 1 }, [AV_PIX_FMT_YUV444P] = { 1, 1 }, [AV_PIX_FMT_YUV410P] = { 1, 1 }, [AV_PIX_FMT_YUV411P] = { 1, 1 }, [AV_PIX_FMT_GRAY8] = { 1, 1 }, [AV_PIX_FMT_MONOWHITE] = { 1, 1 }, [AV_PIX_FMT_MONOBLACK] = { 1, 1 }, [AV_PIX_FMT_PAL8] = { 1, 0 }, [AV_PIX_FMT_YUVJ420P] = { 1, 1 },
a90baa63	[AV_PIX_FMT_YUVJ411P] = { 1, 1 },
716d413c	[AV_PIX_FMT_YUVJ422P] = { 1, 1 }, [AV_PIX_FMT_YUVJ444P] = { 1, 1 },
92b099da	[AV_PIX_FMT_YVYU422] = { 1, 1 },
716d413c	[AV_PIX_FMT_UYVY422] = { 1, 1 }, [AV_PIX_FMT_UYYVYY411] = { 0, 0 }, [AV_PIX_FMT_BGR8] = { 1, 1 }, [AV_PIX_FMT_BGR4] = { 0, 1 }, [AV_PIX_FMT_BGR4_BYTE] = { 1, 1 }, [AV_PIX_FMT_RGB8] = { 1, 1 }, [AV_PIX_FMT_RGB4] = { 0, 1 }, [AV_PIX_FMT_RGB4_BYTE] = { 1, 1 }, [AV_PIX_FMT_NV12] = { 1, 1 }, [AV_PIX_FMT_NV21] = { 1, 1 }, [AV_PIX_FMT_ARGB] = { 1, 1 }, [AV_PIX_FMT_RGBA] = { 1, 1 }, [AV_PIX_FMT_ABGR] = { 1, 1 }, [AV_PIX_FMT_BGRA] = { 1, 1 },
ac627b3d	[AV_PIX_FMT_0RGB] = { 1, 1 }, [AV_PIX_FMT_RGB0] = { 1, 1 }, [AV_PIX_FMT_0BGR] = { 1, 1 }, [AV_PIX_FMT_BGR0] = { 1, 1 },
de48710c	[AV_PIX_FMT_GRAY9BE] = { 1, 1 }, [AV_PIX_FMT_GRAY9LE] = { 1, 1 },
b5177c70	[AV_PIX_FMT_GRAY10BE] = { 1, 1 }, [AV_PIX_FMT_GRAY10LE] = { 1, 1 },
19be5fb7	[AV_PIX_FMT_GRAY12BE] = { 1, 1 }, [AV_PIX_FMT_GRAY12LE] = { 1, 1 },
716d413c	[AV_PIX_FMT_GRAY16BE] = { 1, 1 }, [AV_PIX_FMT_GRAY16LE] = { 1, 1 }, [AV_PIX_FMT_YUV440P] = { 1, 1 }, [AV_PIX_FMT_YUVJ440P] = { 1, 1 },
711d8812	[AV_PIX_FMT_YUV440P10LE] = { 1, 1 }, [AV_PIX_FMT_YUV440P10BE] = { 1, 1 }, [AV_PIX_FMT_YUV440P12LE] = { 1, 1 }, [AV_PIX_FMT_YUV440P12BE] = { 1, 1 },
716d413c	[AV_PIX_FMT_YUVA420P] = { 1, 1 },
ac627b3d	[AV_PIX_FMT_YUVA422P] = { 1, 1 }, [AV_PIX_FMT_YUVA444P] = { 1, 1 },
7658295b	[AV_PIX_FMT_YUVA420P9BE] = { 1, 1 }, [AV_PIX_FMT_YUVA420P9LE] = { 1, 1 }, [AV_PIX_FMT_YUVA422P9BE] = { 1, 1 }, [AV_PIX_FMT_YUVA422P9LE] = { 1, 1 }, [AV_PIX_FMT_YUVA444P9BE] = { 1, 1 }, [AV_PIX_FMT_YUVA444P9LE] = { 1, 1 }, [AV_PIX_FMT_YUVA420P10BE]= { 1, 1 }, [AV_PIX_FMT_YUVA420P10LE]= { 1, 1 }, [AV_PIX_FMT_YUVA422P10BE]= { 1, 1 }, [AV_PIX_FMT_YUVA422P10LE]= { 1, 1 }, [AV_PIX_FMT_YUVA444P10BE]= { 1, 1 }, [AV_PIX_FMT_YUVA444P10LE]= { 1, 1 }, [AV_PIX_FMT_YUVA420P16BE]= { 1, 1 }, [AV_PIX_FMT_YUVA420P16LE]= { 1, 1 }, [AV_PIX_FMT_YUVA422P16BE]= { 1, 1 }, [AV_PIX_FMT_YUVA422P16LE]= { 1, 1 }, [AV_PIX_FMT_YUVA444P16BE]= { 1, 1 }, [AV_PIX_FMT_YUVA444P16LE]= { 1, 1 },
716d413c	[AV_PIX_FMT_RGB48BE] = { 1, 1 }, [AV_PIX_FMT_RGB48LE] = { 1, 1 },
3428a9b8	[AV_PIX_FMT_RGBA64BE] = { 1, 1, 1 }, [AV_PIX_FMT_RGBA64LE] = { 1, 1, 1 },
716d413c	[AV_PIX_FMT_RGB565BE] = { 1, 1 }, [AV_PIX_FMT_RGB565LE] = { 1, 1 }, [AV_PIX_FMT_RGB555BE] = { 1, 1 }, [AV_PIX_FMT_RGB555LE] = { 1, 1 }, [AV_PIX_FMT_BGR565BE] = { 1, 1 }, [AV_PIX_FMT_BGR565LE] = { 1, 1 }, [AV_PIX_FMT_BGR555BE] = { 1, 1 }, [AV_PIX_FMT_BGR555LE] = { 1, 1 }, [AV_PIX_FMT_YUV420P16LE] = { 1, 1 }, [AV_PIX_FMT_YUV420P16BE] = { 1, 1 }, [AV_PIX_FMT_YUV422P16LE] = { 1, 1 }, [AV_PIX_FMT_YUV422P16BE] = { 1, 1 }, [AV_PIX_FMT_YUV444P16LE] = { 1, 1 }, [AV_PIX_FMT_YUV444P16BE] = { 1, 1 }, [AV_PIX_FMT_RGB444LE] = { 1, 1 }, [AV_PIX_FMT_RGB444BE] = { 1, 1 }, [AV_PIX_FMT_BGR444LE] = { 1, 1 }, [AV_PIX_FMT_BGR444BE] = { 1, 1 },
2778fdbe	[AV_PIX_FMT_YA8] = { 1, 1 },
f84a1b59	[AV_PIX_FMT_YA16BE] = { 1, 0 }, [AV_PIX_FMT_YA16LE] = { 1, 0 },
716d413c	[AV_PIX_FMT_BGR48BE] = { 1, 1 }, [AV_PIX_FMT_BGR48LE] = { 1, 1 },
37f69cd9	[AV_PIX_FMT_BGRA64BE] = { 1, 1, 1 }, [AV_PIX_FMT_BGRA64LE] = { 1, 1, 1 },
716d413c	[AV_PIX_FMT_YUV420P9BE] = { 1, 1 }, [AV_PIX_FMT_YUV420P9LE] = { 1, 1 }, [AV_PIX_FMT_YUV420P10BE] = { 1, 1 }, [AV_PIX_FMT_YUV420P10LE] = { 1, 1 },
ac627b3d	[AV_PIX_FMT_YUV420P12BE] = { 1, 1 }, [AV_PIX_FMT_YUV420P12LE] = { 1, 1 }, [AV_PIX_FMT_YUV420P14BE] = { 1, 1 }, [AV_PIX_FMT_YUV420P14LE] = { 1, 1 },
716d413c	[AV_PIX_FMT_YUV422P9BE] = { 1, 1 }, [AV_PIX_FMT_YUV422P9LE] = { 1, 1 }, [AV_PIX_FMT_YUV422P10BE] = { 1, 1 }, [AV_PIX_FMT_YUV422P10LE] = { 1, 1 },
ac627b3d	[AV_PIX_FMT_YUV422P12BE] = { 1, 1 }, [AV_PIX_FMT_YUV422P12LE] = { 1, 1 }, [AV_PIX_FMT_YUV422P14BE] = { 1, 1 }, [AV_PIX_FMT_YUV422P14LE] = { 1, 1 },
716d413c	[AV_PIX_FMT_YUV444P9BE] = { 1, 1 }, [AV_PIX_FMT_YUV444P9LE] = { 1, 1 }, [AV_PIX_FMT_YUV444P10BE] = { 1, 1 }, [AV_PIX_FMT_YUV444P10LE] = { 1, 1 },
ac627b3d	[AV_PIX_FMT_YUV444P12BE] = { 1, 1 }, [AV_PIX_FMT_YUV444P12LE] = { 1, 1 }, [AV_PIX_FMT_YUV444P14BE] = { 1, 1 }, [AV_PIX_FMT_YUV444P14LE] = { 1, 1 },
61884d19	[AV_PIX_FMT_GBRP] = { 1, 1 },
e4033d89	[AV_PIX_FMT_GBRP9LE] = { 1, 1 }, [AV_PIX_FMT_GBRP9BE] = { 1, 1 }, [AV_PIX_FMT_GBRP10LE] = { 1, 1 }, [AV_PIX_FMT_GBRP10BE] = { 1, 1 },
b828788d	[AV_PIX_FMT_GBRAP10LE] = { 1, 1 }, [AV_PIX_FMT_GBRAP10BE] = { 1, 1 },
e4033d89	[AV_PIX_FMT_GBRP12LE] = { 1, 1 }, [AV_PIX_FMT_GBRP12BE] = { 1, 1 },
2c7d8cbd	[AV_PIX_FMT_GBRAP12LE] = { 1, 1 }, [AV_PIX_FMT_GBRAP12BE] = { 1, 1 },
e4033d89	[AV_PIX_FMT_GBRP14LE] = { 1, 1 }, [AV_PIX_FMT_GBRP14BE] = { 1, 1 },
6427c9ff	[AV_PIX_FMT_GBRP16LE] = { 1, 1 }, [AV_PIX_FMT_GBRP16BE] = { 1, 1 },
5c057433	[AV_PIX_FMT_GBRAP] = { 1, 1 },
6427c9ff	[AV_PIX_FMT_GBRAP16LE] = { 1, 1 }, [AV_PIX_FMT_GBRAP16BE] = { 1, 1 },
02b63246	[AV_PIX_FMT_BAYER_BGGR8] = { 1, 0 }, [AV_PIX_FMT_BAYER_RGGB8] = { 1, 0 }, [AV_PIX_FMT_BAYER_GBRG8] = { 1, 0 }, [AV_PIX_FMT_BAYER_GRBG8] = { 1, 0 }, [AV_PIX_FMT_BAYER_BGGR16LE] = { 1, 0 }, [AV_PIX_FMT_BAYER_BGGR16BE] = { 1, 0 }, [AV_PIX_FMT_BAYER_RGGB16LE] = { 1, 0 }, [AV_PIX_FMT_BAYER_RGGB16BE] = { 1, 0 }, [AV_PIX_FMT_BAYER_GBRG16LE] = { 1, 0 }, [AV_PIX_FMT_BAYER_GBRG16BE] = { 1, 0 }, [AV_PIX_FMT_BAYER_GRBG16LE] = { 1, 0 }, [AV_PIX_FMT_BAYER_GRBG16BE] = { 1, 0 },
27513846	[AV_PIX_FMT_XYZ12BE] = { 1, 1, 1 }, [AV_PIX_FMT_XYZ12LE] = { 1, 1, 1 },
3cb8eee6	[AV_PIX_FMT_AYUV64LE] = { 1, 1},
99882d05	[AV_PIX_FMT_P010LE] = { 1, 1 }, [AV_PIX_FMT_P010BE] = { 1, 1 },
9d5aff09	[AV_PIX_FMT_P016LE] = { 1, 1 }, [AV_PIX_FMT_P016BE] = { 1, 1 },
c899bedb	};
716d413c	int sws_isSupportedInput(enum AVPixelFormat pix_fmt)
a4388ebd	{
716d413c	return (unsigned)pix_fmt < AV_PIX_FMT_NB ?
ef0ee7f6	format_entries[pix_fmt].is_supported_in : 0;
a4388ebd	}
716d413c	int sws_isSupportedOutput(enum AVPixelFormat pix_fmt)
a4388ebd	{
716d413c	return (unsigned)pix_fmt < AV_PIX_FMT_NB ?
ef0ee7f6	format_entries[pix_fmt].is_supported_out : 0;
a4388ebd	}
c1eb3e7f	int sws_isSupportedEndiannessConversion(enum AVPixelFormat pix_fmt) { return (unsigned)pix_fmt < AV_PIX_FMT_NB ? format_entries[pix_fmt].is_supported_endianness : 0; }
ef0ee7f6	static double getSplineCoeff(double a, double b, double c, double d, double dist)
a4388ebd	{
ef0ee7f6	if (dist <= 1.0) return ((d * dist + c) * dist + b) * dist + a; else return getSplineCoeff(0.0, b + 2.0 * c + 3.0 * d, c + 3.0 * d, -b - 3.0 * c - 6.0 * d, dist - 1.0);
a4388ebd	}
b405f4e9	static av_cold int get_local_pos(SwsContext *s, int chr_subsample, int pos, int dir) {
61af6beb	if (pos == -1 \|\| pos <= -513) {
b405f4e9	pos = (128 << chr_subsample) - 128; } pos += 128; // relative to ideal left edge return pos >> chr_subsample; }
2a6c95d8	typedef struct { int flag; ///< flag associated to the algorithm const char description; ///< human-readable description int size_factor; ///< size factor used when initing the filters } ScaleAlgorithm; static const ScaleAlgorithm scale_algorithms[] = { { SWS_AREA, "area averaging", 1 / downscale only, for upscale it is bilinear / }, { SWS_BICUBIC, "bicubic", 4 }, { SWS_BICUBLIN, "luma bicubic / chroma bilinear", -1 }, { SWS_BILINEAR, "bilinear", 2 }, { SWS_FAST_BILINEAR, "fast bilinear", -1 }, { SWS_GAUSS, "Gaussian", 8 / infinite ;) / }, { SWS_LANCZOS, "Lanczos", -1 / custom / }, { SWS_POINT, "nearest neighbor / point", -1 }, { SWS_SINC, "sinc", 20 / infinite ;) / }, { SWS_SPLINE, "bicubic spline", 20 / infinite :)*/ }, { SWS_X, "experimental", 8 }, };
2b677ffc	static av_cold int initFilter(int16_t outFilter, int32_t filterPos, int outFilterSize, int xInc, int srcW, int dstW, int filterAlign, int one, int flags, int cpu_flags, SwsVector srcFilter, SwsVector *dstFilter,
b405f4e9	double param[2], int srcPos, int dstPos)
a4388ebd	{ int i; int filterSize; int filter2Size; int minFilterSize;
ef0ee7f6	int64_t filter = NULL; int64_t filter2 = NULL;
7de21960	const int64_t fone = 1LL << (54 - FFMIN(av_log2(srcW/dstW), 8));
ef0ee7f6	int ret = -1;
e66149e7
ef0ee7f6	emms_c(); // FIXME should not be required but IS (even for non-MMX versions)
a4388ebd
ef0ee7f6	// NOTE: the +3 is for the MMX(+1) / SSE(+3) scaler which reads over the end
656fe7ec	FF_ALLOC_ARRAY_OR_GOTO(NULL, filterPos, (dstW + 3), sizeof(*filterPos), fail);
a4388ebd
b405f4e9	if (FFABS(xInc - 0x10000) < 10 && srcPos == dstPos) { // unscaled
a4388ebd	int i;
ef0ee7f6	filterSize = 1;
656fe7ec	FF_ALLOCZ_ARRAY_OR_GOTO(NULL, filter, dstW, sizeof(filter) filterSize, fail);
a4388ebd
ef0ee7f6	for (i = 0; i < dstW; i++) { filter[i * filterSize] = fone; (*filterPos)[i] = i;
a4388ebd	}
ef0ee7f6	} else if (flags & SWS_POINT) { // lame looking point sampling mode
a4388ebd	int i;
90cad5ed	int64_t xDstInSrc;
ef0ee7f6	filterSize = 1;
656fe7ec	FF_ALLOC_ARRAY_OR_GOTO(NULL, filter, dstW, sizeof(filter) filterSize, fail);
a4388ebd
8d745281	xDstInSrc = ((dstPos(int64_t)xInc)>>8) - ((srcPos0x8000LL)>>7);
ef0ee7f6	for (i = 0; i < dstW; i++) { int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
a4388ebd
ef0ee7f6	(*filterPos)[i] = xx; filter[i] = fone; xDstInSrc += xInc;
a4388ebd	}
ef0ee7f6	} else if ((xInc <= (1 << 16) && (flags & SWS_AREA)) \|\| (flags & SWS_FAST_BILINEAR)) { // bilinear upscale
a4388ebd	int i;
90cad5ed	int64_t xDstInSrc;
ef0ee7f6	filterSize = 2;
656fe7ec	FF_ALLOC_ARRAY_OR_GOTO(NULL, filter, dstW, sizeof(filter) filterSize, fail);
a4388ebd
8d745281	xDstInSrc = ((dstPos(int64_t)xInc)>>8) - ((srcPos0x8000LL)>>7);
ef0ee7f6	for (i = 0; i < dstW; i++) { int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
a4388ebd	int j;
ef0ee7f6	(*filterPos)[i] = xx; // bilinear upscale / linear interpolate / area averaging for (j = 0; j < filterSize; j++) {
90cad5ed	int64_t coeff= fone - FFABS(((int64_t)xx<<16) - xDstInSrc)*(fone>>16);
ef0ee7f6	if (coeff < 0) coeff = 0; filter[i * filterSize + j] = coeff;
a4388ebd	xx++; }
ef0ee7f6	xDstInSrc += xInc;
a4388ebd	} } else {
90cad5ed	int64_t xDstInSrc;
2a6c95d8	int sizeFactor = -1; for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) {
e6fe804b	if (flags & scale_algorithms[i].flag && scale_algorithms[i].size_factor > 0) {
2a6c95d8	sizeFactor = scale_algorithms[i].size_factor; break; }
a4388ebd	}
2a6c95d8	if (flags & SWS_LANCZOS) sizeFactor = param[0] != SWS_PARAM_DEFAULT ? ceil(2 * param[0]) : 6; av_assert0(sizeFactor > 0);
a4388ebd
ef0ee7f6	if (xInc <= 1 << 16) filterSize = 1 + sizeFactor; // upscale else filterSize = 1 + (sizeFactor * srcW + dstW - 1) / dstW;
a4388ebd
1254022e	filterSize = FFMIN(filterSize, srcW - 2); filterSize = FFMAX(filterSize, 1);
a4388ebd
656fe7ec	FF_ALLOC_ARRAY_OR_GOTO(NULL, filter, dstW, sizeof(filter) filterSize, fail);
a4388ebd
8d745281	xDstInSrc = ((dstPos(int64_t)xInc)>>7) - ((srcPos0x10000LL)>>7);
ef0ee7f6	for (i = 0; i < dstW; i++) {
325b5936	int xx = (xDstInSrc - (filterSize - 2) * (1LL<<16)) / (1 << 17);
a4388ebd	int j;
ef0ee7f6	(*filterPos)[i] = xx; for (j = 0; j < filterSize; j++) {
fa74058d	int64_t d = (FFABS(((int64_t)xx * (1 << 17)) - xDstInSrc)) << 13;
a4388ebd	double floatd; int64_t coeff;
ef0ee7f6	if (xInc > 1 << 16) d = d * dstW / srcW; floatd = d * (1.0 / (1 << 30));
a4388ebd	if (flags & SWS_BICUBIC) {
ef0ee7f6	int64_t B = (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1 << 24); int64_t C = (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1 << 24);
a4388ebd
ef0ee7f6	if (d >= 1LL << 31) {
8305041e	coeff = 0.0; } else { int64_t dd = (d * d) >> 30; int64_t ddd = (dd * d) >> 30;
ef0ee7f6	if (d < 1LL << 30) coeff = (12 * (1 << 24) - 9 * B - 6 * C) * ddd + (-18 * (1 << 24) + 12 * B + 6 * C) * dd + (6 * (1 << 24) - 2 * B) * (1 << 30);
8305041e	else
ef0ee7f6	coeff = (-B - 6 * C) * ddd + (6 * B + 30 * C) * dd + (-12 * B - 48 * C) * d + (8 * B + 24 * C) * (1 << 30);
8305041e	}
7de21960	coeff /= (1LL<<54)/fone;
8e950c9b	} else if (flags & SWS_X) {
ef0ee7f6	double A = param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
a4388ebd	double c;
ef0ee7f6	if (floatd < 1.0) c = cos(floatd * M_PI);
a4388ebd	else
ef0ee7f6	c = -1.0; if (c < 0.0) c = -pow(-c, A);
a4388ebd	else
ef0ee7f6	c = pow(c, A); coeff = (c * 0.5 + 0.5) * fone;
a4388ebd	} else if (flags & SWS_AREA) {
ef0ee7f6	int64_t d2 = d - (1 << 29); if (d2 * xInc < -(1LL << (29 + 16))) coeff = 1.0 * (1LL << (30 + 16)); else if (d2 * xInc < (1LL << (29 + 16))) coeff = -d2 * xInc + (1LL << (29 + 16)); else coeff = 0.0; coeff *= fone >> (30 + 16);
a4388ebd	} else if (flags & SWS_GAUSS) {
ef0ee7f6	double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
c8905e0d	coeff = exp2(-p * floatd * floatd) * fone;
a4388ebd	} else if (flags & SWS_SINC) {
ef0ee7f6	coeff = (d ? sin(floatd * M_PI) / (floatd * M_PI) : 1.0) * fone;
a4388ebd	} else if (flags & SWS_LANCZOS) {
ef0ee7f6	double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0; coeff = (d ? sin(floatd * M_PI) * sin(floatd * M_PI / p) / (floatd * floatd * M_PI * M_PI / p) : 1.0) * fone; if (floatd > p) coeff = 0;
a4388ebd	} else if (flags & SWS_BILINEAR) {
ef0ee7f6	coeff = (1 << 30) - d; if (coeff < 0) coeff = 0;
a4388ebd	coeff *= fone >> 30; } else if (flags & SWS_SPLINE) {
ef0ee7f6	double p = -2.196152422706632; coeff = getSplineCoeff(1.0, 0.0, p, -p - 1.0, floatd) * fone;
a4388ebd	} else {
e003da71	av_assert0(0);
a4388ebd	}
ef0ee7f6	filter[i * filterSize + j] = coeff;
a4388ebd	xx++; }
ef0ee7f6	xDstInSrc += 2 * xInc;
a4388ebd	} } /* apply src & dst Filter to filter -> filter2
ef0ee7f6	* av_free(filter); */
e003da71	av_assert0(filterSize > 0);
ef0ee7f6	filter2Size = filterSize; if (srcFilter) filter2Size += srcFilter->length - 1; if (dstFilter) filter2Size += dstFilter->length - 1;
e003da71	av_assert0(filter2Size > 0);
656fe7ec	FF_ALLOCZ_ARRAY_OR_GOTO(NULL, filter2, dstW, filter2Size * sizeof(*filter2), fail);
ef0ee7f6	for (i = 0; i < dstW; i++) {
a4388ebd	int j, k;
ef0ee7f6	if (srcFilter) { for (k = 0; k < srcFilter->length; k++) { for (j = 0; j < filterSize; j++) filter2[i * filter2Size + k + j] += srcFilter->coeff[k] * filter[i * filterSize + j];
a4388ebd	} } else {
ef0ee7f6	for (j = 0; j < filterSize; j++) filter2[i * filter2Size + j] = filter[i * filterSize + j];
a4388ebd	}
ef0ee7f6	// FIXME dstFilter
a4388ebd
ef0ee7f6	(*filterPos)[i] += (filterSize - 1) / 2 - (filter2Size - 1) / 2;
a4388ebd	} av_freep(&filter); /* try to reduce the filter-size (step1 find size and shift left) / // Assume it is near normalized (0.5 or 2.0 is OK but 0.001 is not).
ef0ee7f6	minFilterSize = 0; for (i = dstW - 1; i >= 0; i--) { int min = filter2Size;
a4388ebd	int j;
ef0ee7f6	int64_t cutOff = 0.0;
a4388ebd	/* get rid of near zero elements on the left by shifting left */
ef0ee7f6	for (j = 0; j < filter2Size; j++) {
a4388ebd	int k;
ef0ee7f6	cutOff += FFABS(filter2[i * filter2Size]);
a4388ebd
ef0ee7f6	if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone) break;
a4388ebd
ef0ee7f6	/* preserve monotonicity because the core can't handle the * filter otherwise / if (i < dstW - 1 && (filterPos)[i] >= (*filterPos)[i + 1]) break;
a4388ebd	// move filter coefficients left
ef0ee7f6	for (k = 1; k < filter2Size; k++) filter2[i * filter2Size + k - 1] = filter2[i * filter2Size + k]; filter2[i * filter2Size + k - 1] = 0;
a4388ebd	(*filterPos)[i]++; }
ef0ee7f6	cutOff = 0;
a4388ebd	/* count near zeros on the right */
ef0ee7f6	for (j = filter2Size - 1; j > 0; j--) { cutOff += FFABS(filter2[i * filter2Size + j]);
a4388ebd
ef0ee7f6	if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone) break;
a4388ebd	min--; }
ef0ee7f6	if (min > minFilterSize) minFilterSize = min;
a4388ebd	}
f61bece6	if (PPC_ALTIVEC(cpu_flags)) {
ef0ee7f6	// we can handle the special case 4, so we don't want to go the full 8
a4388ebd	if (minFilterSize < 5) filterAlign = 4;
ef0ee7f6	/* We really don't want to waste our time doing useless computation, so * fall back on the scalar C code for very small filters. * Vectorizing is worth it only if you have a decent-sized vector. */
a4388ebd	if (minFilterSize < 3) filterAlign = 1; }
7cdf574c	if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) {
a4388ebd	// special case for unscaled vertical filtering if (minFilterSize == 1 && filterAlign == 2)
ef0ee7f6	filterAlign = 1;
a4388ebd	}
e003da71	av_assert0(minFilterSize > 0);
ef0ee7f6	filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1));
e003da71	av_assert0(filterSize > 0);
656fe7ec	filter = av_malloc_array(dstW, filterSize * sizeof(*filter));
7b2b06eb	if (!filter) goto fail;
ef0ee7f6	if (filterSize >= MAX_FILTER_SIZE * 16 /
7b2b06eb	((flags & SWS_ACCURATE_RND) ? APCK_SIZE : 16)) {
fba89461	ret = RETCODE_USE_CASCADE;
a4388ebd	goto fail;
733f85b7	}
ef0ee7f6	*outFilterSize = filterSize;
a4388ebd
ef0ee7f6	if (flags & SWS_PRINT_INFO) av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);
a4388ebd	/* try to reduce the filter-size (step2 reduce it) */
ef0ee7f6	for (i = 0; i < dstW; i++) {
a4388ebd	int j;
ef0ee7f6	for (j = 0; j < filterSize; j++) { if (j >= filter2Size) filter[i * filterSize + j] = 0; else filter[i * filterSize + j] = filter2[i * filter2Size + j]; if ((flags & SWS_BITEXACT) && j >= minFilterSize) filter[i * filterSize + j] = 0;
a4388ebd	} }
ef0ee7f6	// FIXME try to align filterPos if possible
a4388ebd
ef0ee7f6	// fix borders
367d9b29	for (i = 0; i < dstW; i++) {
a4388ebd	int j; if ((*filterPos)[i] < 0) { // move filter coefficients left to compensate for filterPos
367d9b29	for (j = 1; j < filterSize; j++) { int left = FFMAX(j + (filterPos)[i], 0); filter[i filterSize + left] += filter[i * filterSize + j]; filter[i * filterSize + j] = 0;
a4388ebd	} (filterPos)[i]= 0; } if ((filterPos)[i] + filterSize > srcW) {
692b2262	int shift = (*filterPos)[i] + FFMIN(filterSize - srcW, 0);
1895d414	int64_t acc = 0;
692b2262
1895d414	for (j = filterSize - 1; j >= 0; j--) { if ((filterPos)[i] + j >= srcW) { acc += filter[i filterSize + j]; filter[i * filterSize + j] = 0; }
a4388ebd	}
1895d414	for (j = filterSize - 1; j >= 0; j--) { if (j < shift) { filter[i * filterSize + j] = 0; } else { filter[i * filterSize + j] = filter[i * filterSize + j - shift]; } }
692b2262	(*filterPos)[i]-= shift;
1895d414	filter[i * filterSize + srcW - 1 - (*filterPos)[i]] += acc;
a4388ebd	}
fb8e5044	av_assert0((filterPos)[i] >= 0); av_assert0((filterPos)[i] < srcW); if ((filterPos)[i] + filterSize > srcW) { for (j = 0; j < filterSize; j++) { av_assert0((filterPos)[i] + j < srcW \|\| !filter[i * filterSize + j]); } }
a4388ebd	} // Note the +1 is for the MMX scaler which reads over the end /* align at 16 for AltiVec (needed by hScale_altivec_real) */
656fe7ec	FF_ALLOCZ_ARRAY_OR_GOTO(NULL, outFilter, (dstW + 3), outFilterSize * sizeof(int16_t), fail);
a4388ebd	/* normalize & store in outFilter */
ef0ee7f6	for (i = 0; i < dstW; i++) {
a4388ebd	int j;
ef0ee7f6	int64_t error = 0; int64_t sum = 0;
a4388ebd
ef0ee7f6	for (j = 0; j < filterSize; j++) { sum += filter[i * filterSize + j];
a4388ebd	}
ef0ee7f6	sum = (sum + one / 2) / one;
2e2a2d88	if (!sum) { av_log(NULL, AV_LOG_WARNING, "SwScaler: zero vector in scaling\n"); sum = 1; }
ef0ee7f6	for (j = 0; j < outFilterSize; j++) { int64_t v = filter[i filterSize + j] + error; int intV = ROUNDED_DIV(v, sum); (outFilter)[i (outFilterSize) + j] = intV; error = v - intV sum;
a4388ebd	} }
ef0ee7f6	(filterPos)[dstW + 0] = (filterPos)[dstW + 1] = (filterPos)[dstW + 2] = (filterPos)[dstW - 1]; /* the MMX/SSE scaler will * read over the end / for (i = 0; i < outFilterSize; i++) { int k = (dstW - 1) * (*outFilterSize) + i;
ea540401	(outFilter)[k + 1 (outFilterSize)] = (outFilter)[k + 2 * (outFilterSize)] = (outFilter)[k + 3 * (outFilterSize)] = (outFilter)[k];
a4388ebd	}
ef0ee7f6	ret = 0;
a4388ebd	fail:
733f85b7	if(ret < 0)
fba89461	av_log(NULL, ret == RETCODE_USE_CASCADE ? AV_LOG_DEBUG : AV_LOG_ERROR, "sws: initFilter failed\n");
a4388ebd	av_free(filter); av_free(filter2); return ret; }
9aafb95a	static void fill_rgb2yuv_table(SwsContext *c, const int table[4], int dstRange) {
bcf64348	int64_t W, V, Z, Cy, Cu, Cv;
9aafb95a	int64_t vr = table[0]; int64_t ub = table[1]; int64_t ug = -table[2]; int64_t vg = -table[3]; int64_t ONE = 65536; int64_t cy = ONE;
17ad06c7	uint8_t p = (uint8_t)c->input_rgb2yuv_table; int i; static const int8_t map[] = { BY_IDX, GY_IDX, -1 , BY_IDX, BY_IDX, GY_IDX, -1 , BY_IDX, RY_IDX, -1 , GY_IDX, RY_IDX, RY_IDX, -1 , GY_IDX, RY_IDX, RY_IDX, GY_IDX, -1 , RY_IDX, RY_IDX, GY_IDX, -1 , RY_IDX, BY_IDX, -1 , GY_IDX, BY_IDX, BY_IDX, -1 , GY_IDX, BY_IDX, BU_IDX, GU_IDX, -1 , BU_IDX, BU_IDX, GU_IDX, -1 , BU_IDX, RU_IDX, -1 , GU_IDX, RU_IDX, RU_IDX, -1 , GU_IDX, RU_IDX, RU_IDX, GU_IDX, -1 , RU_IDX, RU_IDX, GU_IDX, -1 , RU_IDX, BU_IDX, -1 , GU_IDX, BU_IDX, BU_IDX, -1 , GU_IDX, BU_IDX, BV_IDX, GV_IDX, -1 , BV_IDX, BV_IDX, GV_IDX, -1 , BV_IDX, RV_IDX, -1 , GV_IDX, RV_IDX, RV_IDX, -1 , GV_IDX, RV_IDX, RV_IDX, GV_IDX, -1 , RV_IDX, RV_IDX, GV_IDX, -1 , RV_IDX, BV_IDX, -1 , GV_IDX, BV_IDX, BV_IDX, -1 , GV_IDX, BV_IDX,
2a5d1cb2	RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, BY_IDX, RY_IDX, GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, -1 , GY_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, BU_IDX, RU_IDX, GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, -1 , GU_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, BV_IDX, RV_IDX, GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 ,
39502363	-1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, -1 , GV_IDX, //23 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //24 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //25 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //26 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //27 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //28 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //29 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //30 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 , //31 BY_IDX, GY_IDX, RY_IDX, -1 , -1 , -1 , -1 , -1 , //32 BU_IDX, GU_IDX, RU_IDX, -1 , -1 , -1 , -1 , -1 , //33 BV_IDX, GV_IDX, RV_IDX, -1 , -1 , -1 , -1 , -1 , //34
17ad06c7	};
9aafb95a	dstRange = 0; //FIXME range = 1 is handled elsewhere if (!dstRange) { cy = cy * 255 / 219; } else { vr = vr * 224 / 255; ub = ub * 224 / 255; ug = ug * 224 / 255; vg = vg * 224 / 255; }
f05cfb65	W = ROUNDED_DIV(ONEONEug, ub); V = ROUNDED_DIV(ONEONEvg, vr);
bcf64348	Z = ONE*ONE-W-V;
9aafb95a
f05cfb65	Cy = ROUNDED_DIV(cyZ, ONE); Cu = ROUNDED_DIV(ubZ, ONE); Cv = ROUNDED_DIV(vr*Z, ONE);
9aafb95a
f05cfb65	c->input_rgb2yuv_table[RY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)V , Cy); c->input_rgb2yuv_table[GY_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)ONEONE , Cy); c->input_rgb2yuv_table[BY_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)W , Cy);
9aafb95a
f05cfb65	c->input_rgb2yuv_table[RU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)V , Cu); c->input_rgb2yuv_table[GU_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)ONEONE , Cu); c->input_rgb2yuv_table[BU_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)(Z+W) , Cu);
bcf64348
f05cfb65	c->input_rgb2yuv_table[RV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)(V+Z) , Cv); c->input_rgb2yuv_table[GV_IDX] = -ROUNDED_DIV((1 << RGB2YUV_SHIFT)ONEONE , Cv); c->input_rgb2yuv_table[BV_IDX] = ROUNDED_DIV((1 << RGB2YUV_SHIFT)W , Cv);
9aafb95a
8efe96ee	if(/!dstRange && /!memcmp(table, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], sizeof(ff_yuv2rgb_coeffs[SWS_CS_DEFAULT]))) {
9aafb95a	c->input_rgb2yuv_table[BY_IDX] = ((int)(0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); c->input_rgb2yuv_table[BV_IDX] = (-(int)(0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); c->input_rgb2yuv_table[BU_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); c->input_rgb2yuv_table[GY_IDX] = ((int)(0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); c->input_rgb2yuv_table[GV_IDX] = (-(int)(0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); c->input_rgb2yuv_table[GU_IDX] = (-(int)(0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); c->input_rgb2yuv_table[RY_IDX] = ((int)(0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); c->input_rgb2yuv_table[RV_IDX] = ((int)(0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); c->input_rgb2yuv_table[RU_IDX] = (-(int)(0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)); }
17ad06c7	for(i=0; i<FF_ARRAY_ELEMS(map); i++) AV_WL16(p + 164 + 2i, map[i] >= 0 ? c->input_rgb2yuv_table[map[i]] : 0);
9aafb95a	}
0c47c902	static void fill_xyztables(struct SwsContext *c) { int i; double xyzgamma = XYZ_GAMMA; double rgbgamma = 1.0 / RGB_GAMMA;
b9b1a2c3	double xyzgammainv = 1.0 / XYZ_GAMMA; double rgbgammainv = RGB_GAMMA;
0c47c902	static const int16_t xyz2rgb_matrix[3][4] = { {13270, -6295, -2041}, {-3969, 7682, 170}, { 228, -835, 4329} };
b9b1a2c3	static const int16_t rgb2xyz_matrix[3][4] = { {1689, 1464, 739}, { 871, 2929, 296}, { 79, 488, 3891} }; static int16_t xyzgamma_tab[4096], rgbgamma_tab[4096], xyzgammainv_tab[4096], rgbgammainv_tab[4096];
2514b800	memcpy(c->xyz2rgb_matrix, xyz2rgb_matrix, sizeof(c->xyz2rgb_matrix));
b9b1a2c3	memcpy(c->rgb2xyz_matrix, rgb2xyz_matrix, sizeof(c->rgb2xyz_matrix));
2514b800	c->xyzgamma = xyzgamma_tab; c->rgbgamma = rgbgamma_tab;
b9b1a2c3	c->xyzgammainv = xyzgammainv_tab; c->rgbgammainv = rgbgammainv_tab;
2514b800	if (rgbgamma_tab[4095]) return;
0c47c902	/* set gamma vectors */ for (i = 0; i < 4096; i++) {
2514b800	xyzgamma_tab[i] = lrint(pow(i / 4095.0, xyzgamma) * 4095.0); rgbgamma_tab[i] = lrint(pow(i / 4095.0, rgbgamma) * 4095.0);
b9b1a2c3	xyzgammainv_tab[i] = lrint(pow(i / 4095.0, xyzgammainv) * 4095.0); rgbgammainv_tab[i] = lrint(pow(i / 4095.0, rgbgammainv) * 4095.0);
0c47c902	} }
96c1e6d4	int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation)
a4388ebd	{
c75dde60	const AVPixFmtDescriptor desc_dst; const AVPixFmtDescriptor desc_src;
4959a4fc	int need_reinit = 0;
a4388ebd
c75dde60	handle_formats(c); desc_dst = av_pix_fmt_desc_get(c->dstFormat); desc_src = av_pix_fmt_desc_get(c->srcFormat);
8edf9b1f	if(!isYUV(c->dstFormat) && !isGray(c->dstFormat)) dstRange = 0; if(!isYUV(c->srcFormat) && !isGray(c->srcFormat)) srcRange = 0;
cc538e9d	if (c->srcRange != srcRange \|\| c->dstRange != dstRange \|\| c->brightness != brightness \|\| c->contrast != contrast \|\| c->saturation != saturation \|\| memcmp(c->srcColorspaceTable, inv_table, sizeof(int) * 4) \|\| memcmp(c->dstColorspaceTable, table, sizeof(int) * 4) ) need_reinit = 1; memmove(c->srcColorspaceTable, inv_table, sizeof(int) * 4); memmove(c->dstColorspaceTable, table, sizeof(int) * 4);
ef0ee7f6	c->brightness = brightness; c->contrast = contrast; c->saturation = saturation; c->srcRange = srcRange; c->dstRange = dstRange;
8edf9b1f
ce4d91ba	//The srcBpc check is possibly wrong but we seem to lack a definitive reference to test this //and what we have in ticket 2939 looks better with this check
b53bdae1	if (need_reinit && (c->srcBpc == 8 \|\| !isYUV(c->srcFormat)))
4959a4fc	ff_sws_init_range_convert(c);
1acd6311	c->dstFormatBpp = av_get_bits_per_pixel(desc_dst); c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
d730dd8c	if (c->cascaded_context[c->cascaded_mainindex]) return sws_setColorspaceDetails(c->cascaded_context[c->cascaded_mainindex],inv_table, srcRange,table, dstRange, brightness, contrast, saturation);
1acd6311
cc538e9d	if (!need_reinit) return 0;
8e05f921	if ((isYUV(c->dstFormat) \|\| isGray(c->dstFormat)) && (isYUV(c->srcFormat) \|\| isGray(c->srcFormat))) { if (!c->cascaded_context[0] && memcmp(c->dstColorspaceTable, c->srcColorspaceTable, sizeof(int) * 4) && c->srcW && c->srcH && c->dstW && c->dstH) { enum AVPixelFormat tmp_format; int tmp_width, tmp_height; int srcW = c->srcW; int srcH = c->srcH; int dstW = c->dstW; int dstH = c->dstH; int ret; av_log(c, AV_LOG_VERBOSE, "YUV color matrix differs for YUV->YUV, using intermediate RGB to convert\n"); if (isNBPS(c->dstFormat) \|\| is16BPS(c->dstFormat)) { if (isALPHA(c->srcFormat) && isALPHA(c->dstFormat)) { tmp_format = AV_PIX_FMT_BGRA64; } else { tmp_format = AV_PIX_FMT_BGR48; } } else { if (isALPHA(c->srcFormat) && isALPHA(c->dstFormat)) { tmp_format = AV_PIX_FMT_BGRA; } else { tmp_format = AV_PIX_FMT_BGR24; } } if (srcWsrcH > dstWdstH) { tmp_width = dstW; tmp_height = dstH; } else { tmp_width = srcW; tmp_height = srcH; } ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride, tmp_width, tmp_height, tmp_format, 64); if (ret < 0) return ret; c->cascaded_context[0] = sws_alloc_set_opts(srcW, srcH, c->srcFormat, tmp_width, tmp_height, tmp_format, c->flags, c->param); if (!c->cascaded_context[0]) return -1; c->cascaded_context[0]->alphablend = c->alphablend; ret = sws_init_context(c->cascaded_context[0], NULL , NULL); if (ret < 0) return ret; //we set both src and dst depending on that the RGB side will be ignored sws_setColorspaceDetails(c->cascaded_context[0], inv_table, srcRange, table, dstRange, brightness, contrast, saturation); c->cascaded_context[1] = sws_getContext(tmp_width, tmp_height, tmp_format, dstW, dstH, c->dstFormat, c->flags, NULL, NULL, c->param); if (!c->cascaded_context[1]) return -1; sws_setColorspaceDetails(c->cascaded_context[1], inv_table, srcRange, table, dstRange, 0, 1 << 16, 1 << 16); return 0; }
ef0ee7f6	return -1;
8e05f921	}
a4388ebd
13bbfb8f	if (!isYUV(c->dstFormat) && !isGray(c->dstFormat)) {
2db65472	ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation); // FIXME factorize
a4388ebd
2db65472	if (ARCH_PPC) ff_yuv2rgb_init_tables_ppc(c, inv_table, brightness, contrast, saturation);
13bbfb8f	}
9aafb95a	fill_rgb2yuv_table(c, table, dstRange);
a4388ebd	return 0; }
96c1e6d4	int sws_getColorspaceDetails(struct SwsContext c, int inv_table, int srcRange, int *table, int dstRange, int brightness, int contrast, int *saturation)
a4388ebd	{
a7e45cfa	if (!c )
ef0ee7f6	return -1;
a4388ebd
ef0ee7f6	inv_table = c->srcColorspaceTable; table = c->dstColorspaceTable; srcRange = c->srcRange; dstRange = c->dstRange; brightness = c->brightness; contrast = c->contrast; *saturation = c->saturation;
a4388ebd	return 0; }
716d413c	static int handle_jpeg(enum AVPixelFormat *format)
a4388ebd	{ switch (*format) {
716d413c	case AV_PIX_FMT_YUVJ420P: *format = AV_PIX_FMT_YUV420P;
ef0ee7f6	return 1;
a90baa63	case AV_PIX_FMT_YUVJ411P: *format = AV_PIX_FMT_YUV411P; return 1;
716d413c	case AV_PIX_FMT_YUVJ422P: *format = AV_PIX_FMT_YUV422P;
ef0ee7f6	return 1;
716d413c	case AV_PIX_FMT_YUVJ444P: *format = AV_PIX_FMT_YUV444P;
ef0ee7f6	return 1;
716d413c	case AV_PIX_FMT_YUVJ440P: *format = AV_PIX_FMT_YUV440P;
ef0ee7f6	return 1;
1ba01d3d	case AV_PIX_FMT_GRAY8:
319898bb	case AV_PIX_FMT_YA8:
de48710c	case AV_PIX_FMT_GRAY9LE: case AV_PIX_FMT_GRAY9BE:
c1616b45	case AV_PIX_FMT_GRAY10LE: case AV_PIX_FMT_GRAY10BE: case AV_PIX_FMT_GRAY12LE: case AV_PIX_FMT_GRAY12BE:
37c07d45	case AV_PIX_FMT_GRAY16LE: case AV_PIX_FMT_GRAY16BE:
319898bb	case AV_PIX_FMT_YA16BE: case AV_PIX_FMT_YA16LE:
1ba01d3d	return 1;
ef0ee7f6	default: return 0;
1c910d2f	} }
ac627b3d	static int handle_0alpha(enum AVPixelFormat *format)
1c910d2f	{ switch (*format) {
ac627b3d	case AV_PIX_FMT_0BGR : format = AV_PIX_FMT_ABGR ; return 1; case AV_PIX_FMT_BGR0 : format = AV_PIX_FMT_BGRA ; return 4; case AV_PIX_FMT_0RGB : format = AV_PIX_FMT_ARGB ; return 1; case AV_PIX_FMT_RGB0 : format = AV_PIX_FMT_RGBA ; return 4;
b8dbff33	default: return 0;
a4388ebd	} }
0c47c902	static int handle_xyz(enum AVPixelFormat format) { switch (format) { case AV_PIX_FMT_XYZ12BE : format = AV_PIX_FMT_RGB48BE; return 1; case AV_PIX_FMT_XYZ12LE : format = AV_PIX_FMT_RGB48LE; return 1; default: return 0; } }
d5f5e516	static void handle_formats(SwsContext *c) {
0fc11e7b	c->src0Alpha \|= handle_0alpha(&c->srcFormat); c->dst0Alpha \|= handle_0alpha(&c->dstFormat); c->srcXYZ \|= handle_xyz(&c->srcFormat); c->dstXYZ \|= handle_xyz(&c->dstFormat);
4d18060e	if (c->srcXYZ \|\| c->dstXYZ) fill_xyztables(c);
d5f5e516	}
c24b404b	SwsContext *sws_alloc_context(void) {
ef0ee7f6	SwsContext *c = av_mallocz(sizeof(SwsContext));
635d4aed
c3417ed7	av_assert0(offsetof(SwsContext, redDither) + DITHER32_INT == offsetof(SwsContext, dither32));
f73f76fd	if (c) {
8bfbc8c5	c->av_class = &ff_sws_context_class;
f73f76fd	av_opt_set_defaults(c); }
635d4aed	return c; }
2a7128f4	static uint16_t * alloc_gamma_tbl(double e) { int i = 0; uint16_t * tbl; tbl = (uint16_t)av_malloc(sizeof(uint16_t) 1 << 16); if (!tbl) return NULL; for (i = 0; i < 65536; ++i) { tbl[i] = pow(i / 65535.0, e) * 65535.0; } return tbl; }
d0e0757e	static enum AVPixelFormat alphaless_fmt(enum AVPixelFormat fmt) { switch(fmt) {
b7faa9d3	case AV_PIX_FMT_ARGB: return AV_PIX_FMT_RGB24; case AV_PIX_FMT_RGBA: return AV_PIX_FMT_RGB24; case AV_PIX_FMT_ABGR: return AV_PIX_FMT_BGR24; case AV_PIX_FMT_BGRA: return AV_PIX_FMT_BGR24; case AV_PIX_FMT_YA8: return AV_PIX_FMT_GRAY8;
0f9d46b7	case AV_PIX_FMT_YUVA420P: return AV_PIX_FMT_YUV420P; case AV_PIX_FMT_YUVA422P: return AV_PIX_FMT_YUV422P;
d0e0757e	case AV_PIX_FMT_YUVA444P: return AV_PIX_FMT_YUV444P; case AV_PIX_FMT_GBRAP: return AV_PIX_FMT_GBRP;
9d30690f	case AV_PIX_FMT_GBRAP10LE: return AV_PIX_FMT_GBRP10; case AV_PIX_FMT_GBRAP10BE: return AV_PIX_FMT_GBRP10;
4170a44b	case AV_PIX_FMT_GBRAP12LE: return AV_PIX_FMT_GBRP12; case AV_PIX_FMT_GBRAP12BE: return AV_PIX_FMT_GBRP12;
d0e0757e	case AV_PIX_FMT_GBRAP16LE: return AV_PIX_FMT_GBRP16; case AV_PIX_FMT_GBRAP16BE: return AV_PIX_FMT_GBRP16;
b7faa9d3	case AV_PIX_FMT_RGBA64LE: return AV_PIX_FMT_RGB48; case AV_PIX_FMT_RGBA64BE: return AV_PIX_FMT_RGB48; case AV_PIX_FMT_BGRA64LE: return AV_PIX_FMT_BGR48; case AV_PIX_FMT_BGRA64BE: return AV_PIX_FMT_BGR48;
d0e0757e
b7faa9d3	case AV_PIX_FMT_YA16BE: return AV_PIX_FMT_GRAY16; case AV_PIX_FMT_YA16LE: return AV_PIX_FMT_GRAY16;
d0e0757e
0f9d46b7	case AV_PIX_FMT_YUVA420P9BE: return AV_PIX_FMT_YUV420P9; case AV_PIX_FMT_YUVA422P9BE: return AV_PIX_FMT_YUV422P9;
d0e0757e	case AV_PIX_FMT_YUVA444P9BE: return AV_PIX_FMT_YUV444P9;
0f9d46b7	case AV_PIX_FMT_YUVA420P9LE: return AV_PIX_FMT_YUV420P9; case AV_PIX_FMT_YUVA422P9LE: return AV_PIX_FMT_YUV422P9;
d0e0757e	case AV_PIX_FMT_YUVA444P9LE: return AV_PIX_FMT_YUV444P9;
0f9d46b7	case AV_PIX_FMT_YUVA420P10BE: return AV_PIX_FMT_YUV420P10; case AV_PIX_FMT_YUVA422P10BE: return AV_PIX_FMT_YUV422P10;
d0e0757e	case AV_PIX_FMT_YUVA444P10BE: return AV_PIX_FMT_YUV444P10;
0f9d46b7	case AV_PIX_FMT_YUVA420P10LE: return AV_PIX_FMT_YUV420P10; case AV_PIX_FMT_YUVA422P10LE: return AV_PIX_FMT_YUV422P10;
d0e0757e	case AV_PIX_FMT_YUVA444P10LE: return AV_PIX_FMT_YUV444P10;
0f9d46b7	case AV_PIX_FMT_YUVA420P16BE: return AV_PIX_FMT_YUV420P16; case AV_PIX_FMT_YUVA422P16BE: return AV_PIX_FMT_YUV422P16;
d0e0757e	case AV_PIX_FMT_YUVA444P16BE: return AV_PIX_FMT_YUV444P16;
0f9d46b7	case AV_PIX_FMT_YUVA420P16LE: return AV_PIX_FMT_YUV420P16; case AV_PIX_FMT_YUVA422P16LE: return AV_PIX_FMT_YUV422P16;
d0e0757e	case AV_PIX_FMT_YUVA444P16LE: return AV_PIX_FMT_YUV444P16; // case AV_PIX_FMT_AYUV64LE: // case AV_PIX_FMT_AYUV64BE: // case AV_PIX_FMT_PAL8: default: return AV_PIX_FMT_NONE; } }
5a6e3c03	av_cold int sws_init_context(SwsContext c, SwsFilter srcFilter, SwsFilter *dstFilter)
c24b404b	{
c1690620	int i;
a4388ebd	int usesVFilter, usesHFilter; int unscaled;
ef0ee7f6	SwsFilter dummyFilter = { NULL, NULL, NULL, NULL }; int srcW = c->srcW; int srcH = c->srcH; int dstW = c->dstW; int dstH = c->dstH;
367d9b29	int dst_stride = FFALIGN(dstW * sizeof(int16_t) + 66, 16);
e66149e7	int flags, cpu_flags;
716d413c	enum AVPixelFormat srcFormat = c->srcFormat; enum AVPixelFormat dstFormat = c->dstFormat;
c75dde60	const AVPixFmtDescriptor desc_src; const AVPixFmtDescriptor desc_dst;
fba89461	int ret = 0;
2a7128f4	enum AVPixelFormat tmpFmt;
635d4aed
e66149e7	cpu_flags = av_get_cpu_flags(); flags = c->flags;
c4fd283a	emms_c();
ef0ee7f6	if (!rgb15to16)
e8c37160	ff_sws_rgb2rgb_init();
a4388ebd	unscaled = (srcW == dstW && srcH == dstH);
37f4aa13	c->srcRange \|= handle_jpeg(&c->srcFormat); c->dstRange \|= handle_jpeg(&c->dstFormat);
51fed95d	if(srcFormat!=c->srcFormat \|\| dstFormat!=c->dstFormat) av_log(c, AV_LOG_WARNING, "deprecated pixel format used, make sure you did set range correctly\n");
37f4aa13	if (!c->contrast && !c->saturation && !c->dstFormatBpp) sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], c->srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], c->dstRange, 0, 1 << 16, 1 << 16);
c75dde60	handle_formats(c); srcFormat = c->srcFormat; dstFormat = c->dstFormat; desc_src = av_pix_fmt_desc_get(srcFormat); desc_dst = av_pix_fmt_desc_get(dstFormat);
5bccb2d0
816cf518	// If the source has no alpha then disable alpha blendaway if (c->src0Alpha) c->alphablend = SWS_ALPHA_BLEND_NONE;
c1eb3e7f	if (!(unscaled && sws_isSupportedEndiannessConversion(srcFormat) && av_pix_fmt_swap_endianness(srcFormat) == dstFormat)) {
07f49ca1	if (!sws_isSupportedInput(srcFormat)) {
ef0ee7f6	av_log(c, AV_LOG_ERROR, "%s is not supported as input pixel format\n",
367d9b29	av_get_pix_fmt_name(srcFormat));
635d4aed	return AVERROR(EINVAL);
a4388ebd	}
07f49ca1	if (!sws_isSupportedOutput(dstFormat)) {
ef0ee7f6	av_log(c, AV_LOG_ERROR, "%s is not supported as output pixel format\n",
367d9b29	av_get_pix_fmt_name(dstFormat));
635d4aed	return AVERROR(EINVAL);
a4388ebd	}
c1eb3e7f	}
ae0148ff	av_assert2(desc_src && desc_dst);
a4388ebd
ef0ee7f6	i = flags & (SWS_POINT \| SWS_AREA \| SWS_BILINEAR \| SWS_FAST_BILINEAR \| SWS_BICUBIC \| SWS_X \| SWS_GAUSS \| SWS_LANCZOS \| SWS_SINC \| SWS_SPLINE \| SWS_BICUBLIN);
6b3ff6f9	/* provide a default scaler if not set by caller */ if (!i) { if (dstW < srcW && dstH < srcH)
5710f55e	flags \|= SWS_BICUBIC;
6b3ff6f9	else if (dstW > srcW && dstH > srcH)
5710f55e	flags \|= SWS_BICUBIC;
6b3ff6f9	else
5710f55e	flags \|= SWS_BICUBIC;
6b3ff6f9	c->flags = flags; } else if (i & (i - 1)) {
ef0ee7f6	av_log(c, AV_LOG_ERROR,
5710f55e	"Exactly one scaler algorithm must be chosen, got %X\n", i);
635d4aed	return AVERROR(EINVAL);
a4388ebd	} /* sanity check */
425c30dd	if (srcW < 1 \|\| srcH < 1 \|\| dstW < 1 \|\| dstH < 1) {
ef0ee7f6	/* FIXME check if these are enough and try to lower them after * fixing the relevant parts of the code */
3636e791	av_log(c, AV_LOG_ERROR, "%dx%d -> %dx%d is invalid scaling dimension\n",
a4388ebd	srcW, srcH, dstW, dstH);
635d4aed	return AVERROR(EINVAL);
a4388ebd	}
1edf129c	if (flags & SWS_FAST_BILINEAR) { if (srcW < 8 \|\| dstW < 8) { flags ^= SWS_FAST_BILINEAR \| SWS_BILINEAR; c->flags = flags; } }
a4388ebd
ef0ee7f6	if (!dstFilter) dstFilter = &dummyFilter; if (!srcFilter) srcFilter = &dummyFilter;
a4388ebd
ef0ee7f6	c->lumXInc = (((int64_t)srcW << 16) + (dstW >> 1)) / dstW; c->lumYInc = (((int64_t)srcH << 16) + (dstH >> 1)) / dstH;
0a7068fa	c->dstFormatBpp = av_get_bits_per_pixel(desc_dst); c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
ef0ee7f6	c->vRounder = 4 * 0x0001000100010001ULL;
a4388ebd
ef0ee7f6	usesVFilter = (srcFilter->lumV && srcFilter->lumV->length > 1) \|\| (srcFilter->chrV && srcFilter->chrV->length > 1) \|\| (dstFilter->lumV && dstFilter->lumV->length > 1) \|\| (dstFilter->chrV && dstFilter->chrV->length > 1); usesHFilter = (srcFilter->lumH && srcFilter->lumH->length > 1) \|\| (srcFilter->chrH && srcFilter->chrH->length > 1) \|\| (dstFilter->lumH && dstFilter->lumH->length > 1) \|\| (dstFilter->chrH && dstFilter->chrH->length > 1);
a4388ebd
ff9d11f9	av_pix_fmt_get_chroma_sub_sample(srcFormat, &c->chrSrcHSubSample, &c->chrSrcVSubSample); av_pix_fmt_get_chroma_sub_sample(dstFormat, &c->chrDstHSubSample, &c->chrDstVSubSample);
a4388ebd
ba6e36f9	if (isAnyRGB(dstFormat) && !(flags&SWS_FULL_CHR_H_INT)) { if (dstW&1) { av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to odd output size\n"); flags \|= SWS_FULL_CHR_H_INT; c->flags = flags;
87a72b91	}
a830915b	if ( c->chrSrcHSubSample == 0 && c->chrSrcVSubSample == 0 && c->dither != SWS_DITHER_BAYER //SWS_FULL_CHR_H_INT is currently not supported with SWS_DITHER_BAYER && !(c->flags & SWS_FAST_BILINEAR) ) { av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to input having non subsampled chroma\n"); flags \|= SWS_FULL_CHR_H_INT; c->flags = flags; }
87a72b91	}
2dc2e4f5
1e0e1932	if (c->dither == SWS_DITHER_AUTO) { if (flags & SWS_ERROR_DIFFUSION) c->dither = SWS_DITHER_ED; }
aef5c0b6	if(dstFormat == AV_PIX_FMT_BGR4_BYTE \|\| dstFormat == AV_PIX_FMT_RGB4_BYTE \|\| dstFormat == AV_PIX_FMT_BGR8 \|\| dstFormat == AV_PIX_FMT_RGB8) {
8c50ea22	if (c->dither == SWS_DITHER_AUTO) c->dither = (flags & SWS_FULL_CHR_H_INT) ? SWS_DITHER_ED : SWS_DITHER_BAYER;
23b31412	if (!(flags & SWS_FULL_CHR_H_INT)) {
3e601662	if (c->dither == SWS_DITHER_ED \|\| c->dither == SWS_DITHER_A_DITHER \|\| c->dither == SWS_DITHER_X_DITHER) {
23b31412	av_log(c, AV_LOG_DEBUG, "Desired dithering only supported in full chroma interpolation for destination format '%s'\n", av_get_pix_fmt_name(dstFormat)); flags \|= SWS_FULL_CHR_H_INT; c->flags = flags; }
2dc2e4f5	}
23b31412	if (flags & SWS_FULL_CHR_H_INT) { if (c->dither == SWS_DITHER_BAYER) { av_log(c, AV_LOG_DEBUG, "Ordered dither is not supported in full chroma interpolation for destination format '%s'\n", av_get_pix_fmt_name(dstFormat)); c->dither = SWS_DITHER_ED; }
aef5c0b6	}
2dc2e4f5	}
e4033d89	if (isPlanarRGB(dstFormat)) {
61884d19	if (!(flags & SWS_FULL_CHR_H_INT)) { av_log(c, AV_LOG_DEBUG,
4eb93bed	"%s output is not supported with half chroma resolution, switching to full\n", av_get_pix_fmt_name(dstFormat));
61884d19	flags \|= SWS_FULL_CHR_H_INT; c->flags = flags; } }
2dc2e4f5
ef0ee7f6	/* reuse chroma for 2 pixels RGB/BGR unless user wants full * chroma interpolation */
87a72b91	if (flags & SWS_FULL_CHR_H_INT &&
ef0ee7f6	isAnyRGB(dstFormat) &&
e4033d89	!isPlanarRGB(dstFormat) &&
e29d9961	dstFormat != AV_PIX_FMT_RGBA64LE && dstFormat != AV_PIX_FMT_RGBA64BE && dstFormat != AV_PIX_FMT_BGRA64LE && dstFormat != AV_PIX_FMT_BGRA64BE && dstFormat != AV_PIX_FMT_RGB48LE && dstFormat != AV_PIX_FMT_RGB48BE && dstFormat != AV_PIX_FMT_BGR48LE && dstFormat != AV_PIX_FMT_BGR48BE &&
716d413c	dstFormat != AV_PIX_FMT_RGBA && dstFormat != AV_PIX_FMT_ARGB && dstFormat != AV_PIX_FMT_BGRA && dstFormat != AV_PIX_FMT_ABGR && dstFormat != AV_PIX_FMT_RGB24 &&
ca447592	dstFormat != AV_PIX_FMT_BGR24 && dstFormat != AV_PIX_FMT_BGR4_BYTE && dstFormat != AV_PIX_FMT_RGB4_BYTE && dstFormat != AV_PIX_FMT_BGR8 && dstFormat != AV_PIX_FMT_RGB8 ) {
87a72b91	av_log(c, AV_LOG_WARNING, "full chroma interpolation for destination format '%s' not yet implemented\n",
367d9b29	av_get_pix_fmt_name(dstFormat));
ef0ee7f6	flags &= ~SWS_FULL_CHR_H_INT;
87a72b91	c->flags = flags;
ba6e36f9	}
ef0ee7f6	if (isAnyRGB(dstFormat) && !(flags & SWS_FULL_CHR_H_INT)) c->chrDstHSubSample = 1;
a4388ebd	// drop some chroma lines if the user wants it
ef0ee7f6	c->vChrDrop = (flags & SWS_SRC_V_CHR_DROP_MASK) >> SWS_SRC_V_CHR_DROP_SHIFT; c->chrSrcVSubSample += c->vChrDrop; /* drop every other pixel for chroma calculation unless user * wants full chroma */ if (isAnyRGB(srcFormat) && !(flags & SWS_FULL_CHR_H_INP) &&
716d413c	srcFormat != AV_PIX_FMT_RGB8 && srcFormat != AV_PIX_FMT_BGR8 && srcFormat != AV_PIX_FMT_RGB4 && srcFormat != AV_PIX_FMT_BGR4 && srcFormat != AV_PIX_FMT_RGB4_BYTE && srcFormat != AV_PIX_FMT_BGR4_BYTE &&
3c2ecfcc	srcFormat != AV_PIX_FMT_GBRP9BE && srcFormat != AV_PIX_FMT_GBRP9LE && srcFormat != AV_PIX_FMT_GBRP10BE && srcFormat != AV_PIX_FMT_GBRP10LE &&
9d30690f	srcFormat != AV_PIX_FMT_GBRAP10BE && srcFormat != AV_PIX_FMT_GBRAP10LE &&
3c2ecfcc	srcFormat != AV_PIX_FMT_GBRP12BE && srcFormat != AV_PIX_FMT_GBRP12LE &&
4170a44b	srcFormat != AV_PIX_FMT_GBRAP12BE && srcFormat != AV_PIX_FMT_GBRAP12LE &&
3c2ecfcc	srcFormat != AV_PIX_FMT_GBRP14BE && srcFormat != AV_PIX_FMT_GBRP14LE &&
7b41c24c	srcFormat != AV_PIX_FMT_GBRP16BE && srcFormat != AV_PIX_FMT_GBRP16LE &&
67e5bd0c	srcFormat != AV_PIX_FMT_GBRAP16BE && srcFormat != AV_PIX_FMT_GBRAP16LE &&
ef0ee7f6	((dstW >> c->chrDstHSubSample) <= (srcW >> 1) \|\| (flags & SWS_FAST_BILINEAR))) c->chrSrcHSubSample = 1;
a4388ebd
21f94684	// Note the AV_CEIL_RSHIFT is so that we always round toward +inf. c->chrSrcW = AV_CEIL_RSHIFT(srcW, c->chrSrcHSubSample); c->chrSrcH = AV_CEIL_RSHIFT(srcH, c->chrSrcVSubSample); c->chrDstW = AV_CEIL_RSHIFT(dstW, c->chrDstHSubSample); c->chrDstH = AV_CEIL_RSHIFT(dstH, c->chrDstVSubSample);
a4388ebd
007498fc	FF_ALLOCZ_OR_GOTO(c, c->formatConvBuffer, FFALIGN(srcW2+78, 16) 2, fail);
21d82554
2268db2c	c->srcBpc = desc_src->comp[0].depth;
28c1115a	if (c->srcBpc < 8) c->srcBpc = 8;
2268db2c	c->dstBpc = desc_dst->comp[0].depth;
28c1115a	if (c->dstBpc < 8) c->dstBpc = 8;
ac627b3d	if (isAnyRGB(srcFormat) \|\| srcFormat == AV_PIX_FMT_PAL8)
ca1dfea1	c->srcBpc = 16;
28c1115a	if (c->dstBpc == 16)
45f6ffe5	dst_stride <<= 1;
4b874fc4
77aedc77	if (INLINE_MMXEXT(cpu_flags) && c->srcBpc == 8 && c->dstBpc <= 14) {
554e913f	c->canMMXEXTBeUsed = dstW >= srcW && (dstW & 31) == 0 &&
037fc3b0	c->chrDstW >= c->chrSrcW &&
554e913f	(srcW & 15) == 0;
037fc3b0	if (!c->canMMXEXTBeUsed && dstW >= srcW && c->chrDstW >= c->chrSrcW && (srcW & 15) == 0
4b874fc4
ef0ee7f6	&& (flags & SWS_FAST_BILINEAR)) { if (flags & SWS_PRINT_INFO) av_log(c, AV_LOG_INFO,
652f5185	"output width is not a multiple of 32 -> no MMXEXT scaler\n");
a4388ebd	}
367d9b29	if (usesHFilter \|\| isNBPS(c->srcFormat) \|\| is16BPS(c->srcFormat) \|\| isAnyRGB(c->srcFormat))
a65bdceb	c->canMMXEXTBeUsed = 0;
ef0ee7f6	} else
a65bdceb	c->canMMXEXTBeUsed = 0;
ef0ee7f6	c->chrXInc = (((int64_t)c->chrSrcW << 16) + (c->chrDstW >> 1)) / c->chrDstW; c->chrYInc = (((int64_t)c->chrSrcH << 16) + (c->chrDstH >> 1)) / c->chrDstH; /* Match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src * to pixel n-2 of dst, but only for the FAST_BILINEAR mode otherwise do * correct scaling. * n-2 is the last chrominance sample available. * This is not perfect, but no one should notice the difference, the more * correct variant would be like the vertical one, but that would require * some special code for the first and last pixel */ if (flags & SWS_FAST_BILINEAR) {
a65bdceb	if (c->canMMXEXTBeUsed) {
ef0ee7f6	c->lumXInc += 20; c->chrXInc += 20;
a4388ebd	}
ef0ee7f6	// we don't use the x86 asm scaler if MMX is available
77aedc77	else if (INLINE_MMX(cpu_flags) && c->dstBpc <= 14) {
ef0ee7f6	c->lumXInc = ((int64_t)(srcW - 2) << 16) / (dstW - 2) - 20; c->chrXInc = ((int64_t)(c->chrSrcW - 2) << 16) / (c->chrDstW - 2) - 20;
a4388ebd	} }
2a7128f4	// hardcoded for now c->gamma_value = 2.2; tmpFmt = AV_PIX_FMT_RGBA64LE; if (!unscaled && c->gamma_flag && (srcFormat != tmpFmt \|\| dstFormat != tmpFmt)) {
b57f9f57	SwsContext *c2;
2a7128f4	c->cascaded_context[0] = NULL; ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride, srcW, srcH, tmpFmt, 64); if (ret < 0) return ret; c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat, srcW, srcH, tmpFmt, flags, NULL, NULL, c->param); if (!c->cascaded_context[0]) { return -1; } c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFmt, dstW, dstH, tmpFmt,
b57f9f57	flags, srcFilter, dstFilter, c->param);
2a7128f4	if (!c->cascaded_context[1]) return -1;
b57f9f57	c2 = c->cascaded_context[1]; c2->is_internal_gamma = 1; c2->gamma = alloc_gamma_tbl( c->gamma_value); c2->inv_gamma = alloc_gamma_tbl(1.f/c->gamma_value); if (!c2->gamma \|\| !c2->inv_gamma) return AVERROR(ENOMEM);
3059562a	// is_internal_flag is set after creating the context // to properly create the gamma convert FilterDescriptor // we have to re-initialize it ff_free_filters(c2); if (ff_init_filters(c2) < 0) { sws_freeContext(c2); return -1; }
2a7128f4	c->cascaded_context[2] = NULL; if (dstFormat != tmpFmt) { ret = av_image_alloc(c->cascaded1_tmp, c->cascaded1_tmpStride, dstW, dstH, tmpFmt, 64); if (ret < 0) return ret; c->cascaded_context[2] = sws_getContext(dstW, dstH, tmpFmt, dstW, dstH, dstFormat, flags, NULL, NULL, c->param); if (!c->cascaded_context[2]) return -1; } return 0; }
2f6bb86f	if (isBayer(srcFormat)) { if (!unscaled \|\| (dstFormat != AV_PIX_FMT_RGB24 && dstFormat != AV_PIX_FMT_YUV420P)) { enum AVPixelFormat tmpFormat = AV_PIX_FMT_RGB24; ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride, srcW, srcH, tmpFormat, 64); if (ret < 0) return ret; c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat, srcW, srcH, tmpFormat, flags, srcFilter, NULL, c->param); if (!c->cascaded_context[0]) return -1; c->cascaded_context[1] = sws_getContext(srcW, srcH, tmpFormat, dstW, dstH, dstFormat, flags, NULL, dstFilter, c->param); if (!c->cascaded_context[1]) return -1; return 0; } }
d0e0757e	if (CONFIG_SWSCALE_ALPHA && isALPHA(srcFormat) && !isALPHA(dstFormat)) { enum AVPixelFormat tmpFormat = alphaless_fmt(srcFormat); if (tmpFormat != AV_PIX_FMT_NONE && c->alphablend != SWS_ALPHA_BLEND_NONE) if (!unscaled \|\| dstFormat != tmpFormat \|\| usesHFilter \|\| usesVFilter \|\| c->srcRange != c->dstRange ) {
d730dd8c	c->cascaded_mainindex = 1;
d0e0757e	ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride, srcW, srcH, tmpFormat, 64); if (ret < 0) return ret; c->cascaded_context[0] = sws_alloc_set_opts(srcW, srcH, srcFormat, srcW, srcH, tmpFormat, flags, c->param); if (!c->cascaded_context[0]) return -1; c->cascaded_context[0]->alphablend = c->alphablend; ret = sws_init_context(c->cascaded_context[0], NULL , NULL); if (ret < 0) return ret;
21c72728	c->cascaded_context[1] = sws_alloc_set_opts(srcW, srcH, tmpFormat, dstW, dstH, dstFormat, flags, c->param);
d0e0757e	if (!c->cascaded_context[1]) return -1;
21c72728	c->cascaded_context[1]->srcRange = c->srcRange; c->cascaded_context[1]->dstRange = c->dstRange; ret = sws_init_context(c->cascaded_context[1], srcFilter , dstFilter); if (ret < 0) return ret;
d0e0757e	return 0; } }
add7b3bc	#if HAVE_MMAP && HAVE_MPROTECT && defined(MAP_ANONYMOUS) #define USE_MMAP 1 #else #define USE_MMAP 0 #endif
95cd815c
a4388ebd	/* precalculate horizontal scaler filter coefficients */ {
17337f54	#if HAVE_MMXEXT_INLINE
a4388ebd	// can't downscale !!!
a65bdceb	if (c->canMMXEXTBeUsed && (flags & SWS_FAST_BILINEAR)) {
6532a1a8	c->lumMmxextFilterCodeSize = ff_init_hscaler_mmxext(dstW, c->lumXInc, NULL,
d8eda370	NULL, NULL, 8);
6532a1a8	c->chrMmxextFilterCodeSize = ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc,
d8eda370	NULL, NULL, NULL, 4);
a4388ebd
95cd815c	#if USE_MMAP
a65bdceb	c->lumMmxextFilterCode = mmap(NULL, c->lumMmxextFilterCodeSize, PROT_READ \| PROT_WRITE, MAP_PRIVATE \| MAP_ANONYMOUS, -1, 0); c->chrMmxextFilterCode = mmap(NULL, c->chrMmxextFilterCodeSize, PROT_READ \| PROT_WRITE, MAP_PRIVATE \| MAP_ANONYMOUS, -1, 0);
a4388ebd	#elif HAVE_VIRTUALALLOC
a65bdceb	c->lumMmxextFilterCode = VirtualAlloc(NULL, c->lumMmxextFilterCodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE); c->chrMmxextFilterCode = VirtualAlloc(NULL, c->chrMmxextFilterCodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
a4388ebd	#else
a65bdceb	c->lumMmxextFilterCode = av_malloc(c->lumMmxextFilterCodeSize); c->chrMmxextFilterCode = av_malloc(c->chrMmxextFilterCodeSize);
a4388ebd	#endif
2671ab39	#ifdef MAP_ANONYMOUS
4b874fc4	if (c->lumMmxextFilterCode == MAP_FAILED \|\| c->chrMmxextFilterCode == MAP_FAILED)
2671ab39	#else
a65bdceb	if (!c->lumMmxextFilterCode \|\| !c->chrMmxextFilterCode)
2671ab39	#endif
32a92d32	{ av_log(c, AV_LOG_ERROR, "Failed to allocate MMX2FilterCode\n");
635d4aed	return AVERROR(ENOMEM);
32a92d32	}
a4388ebd
ef0ee7f6	FF_ALLOCZ_OR_GOTO(c, c->hLumFilter, (dstW / 8 + 8) * sizeof(int16_t), fail); FF_ALLOCZ_OR_GOTO(c, c->hChrFilter, (c->chrDstW / 4 + 8) * sizeof(int16_t), fail); FF_ALLOCZ_OR_GOTO(c, c->hLumFilterPos, (dstW / 2 / 8 + 8) * sizeof(int32_t), fail); FF_ALLOCZ_OR_GOTO(c, c->hChrFilterPos, (c->chrDstW / 2 / 4 + 8) * sizeof(int32_t), fail);
a4388ebd
6532a1a8	ff_init_hscaler_mmxext( dstW, c->lumXInc, c->lumMmxextFilterCode,
add7513e	c->hLumFilter, (uint32_t*)c->hLumFilterPos, 8);
6532a1a8	ff_init_hscaler_mmxext(c->chrDstW, c->chrXInc, c->chrMmxextFilterCode,
add7513e	c->hChrFilter, (uint32_t*)c->hChrFilterPos, 4);
a4388ebd
95cd815c	#if USE_MMAP
eb4205cc	if ( mprotect(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize, PROT_EXEC \| PROT_READ) == -1 \|\| mprotect(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize, PROT_EXEC \| PROT_READ) == -1) { av_log(c, AV_LOG_ERROR, "mprotect failed, cannot use fast bilinear scaler\n"); goto fail; }
a4388ebd	#endif } else
17337f54	#endif /* HAVE_MMXEXT_INLINE */
a4388ebd	{
79aec43c	const int filterAlign = X86_MMX(cpu_flags) ? 4 :
263eb76b	PPC_ALTIVEC(cpu_flags) ? 8 :
04059821	have_neon(cpu_flags) ? 8 : 1;
a4388ebd
fba89461	if ((ret = initFilter(&c->hLumFilter, &c->hLumFilterPos,
ef0ee7f6	&c->hLumFilterSize, c->lumXInc, srcW, dstW, filterAlign, 1 << 14, (flags & SWS_BICUBLIN) ? (flags \| SWS_BICUBIC) : flags, cpu_flags, srcFilter->lumH, dstFilter->lumH,
b405f4e9	c->param, get_local_pos(c, 0, 0, 0),
fba89461	get_local_pos(c, 0, 0, 0))) < 0)
a4388ebd	goto fail;
fba89461	if ((ret = initFilter(&c->hChrFilter, &c->hChrFilterPos,
ef0ee7f6	&c->hChrFilterSize, c->chrXInc, c->chrSrcW, c->chrDstW, filterAlign, 1 << 14, (flags & SWS_BICUBLIN) ? (flags \| SWS_BILINEAR) : flags, cpu_flags, srcFilter->chrH, dstFilter->chrH,
b405f4e9	c->param, get_local_pos(c, c->chrSrcHSubSample, c->src_h_chr_pos, 0),
fba89461	get_local_pos(c, c->chrDstHSubSample, c->dst_h_chr_pos, 0))) < 0)
a4388ebd	goto fail; } } // initialize horizontal stuff /* precalculate vertical scaler filter coefficients */ {
79aec43c	const int filterAlign = X86_MMX(cpu_flags) ? 2 :
c921f4f6	PPC_ALTIVEC(cpu_flags) ? 8 : have_neon(cpu_flags) ? 2 : 1;
a4388ebd
fba89461	if ((ret = initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize,
ef0ee7f6	c->lumYInc, srcH, dstH, filterAlign, (1 << 12), (flags & SWS_BICUBLIN) ? (flags \| SWS_BICUBIC) : flags, cpu_flags, srcFilter->lumV, dstFilter->lumV,
b405f4e9	c->param, get_local_pos(c, 0, 0, 1),
fba89461	get_local_pos(c, 0, 0, 1))) < 0)
a4388ebd	goto fail;
fba89461	if ((ret = initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize,
ef0ee7f6	c->chrYInc, c->chrSrcH, c->chrDstH, filterAlign, (1 << 12), (flags & SWS_BICUBLIN) ? (flags \| SWS_BILINEAR) : flags, cpu_flags, srcFilter->chrV, dstFilter->chrV,
b405f4e9	c->param, get_local_pos(c, c->chrSrcVSubSample, c->src_v_chr_pos, 1),
fba89461	get_local_pos(c, c->chrDstVSubSample, c->dst_v_chr_pos, 1))) < 0)
b405f4e9
a4388ebd	goto fail;
f684f3c5	#if HAVE_ALTIVEC
ef0ee7f6	FF_ALLOC_OR_GOTO(c, c->vYCoeffsBank, sizeof(vector signed short) * c->vLumFilterSize * c->dstH, fail); FF_ALLOC_OR_GOTO(c, c->vCCoeffsBank, sizeof(vector signed short) * c->vChrFilterSize * c->chrDstH, fail);
a4388ebd
ef0ee7f6	for (i = 0; i < c->vLumFilterSize * c->dstH; i++) {
a4388ebd	int j; short p = (short )&c->vYCoeffsBank[i];
ef0ee7f6	for (j = 0; j < 8; j++)
a4388ebd	p[j] = c->vLumFilter[i]; }
ef0ee7f6	for (i = 0; i < c->vChrFilterSize * c->chrDstH; i++) {
a4388ebd	int j; short p = (short )&c->vCCoeffsBank[i];
ef0ee7f6	for (j = 0; j < 8; j++)
a4388ebd	p[j] = c->vChrFilter[i]; } #endif }
646ade76	for (i = 0; i < 4; i++) FF_ALLOCZ_OR_GOTO(c, c->dither_error[i], (c->dstW+2) * sizeof(int), fail);
6de58b49	c->needAlpha = (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat)) ? 1 : 0;
baba2eed	// 64 / c->scalingBpp is the same as 16 / sizeof(scaling_intermediate)
ca1dfea1	c->uv_off = (dst_stride>>1) + 64 / (c->dstBpc &~ 7);
042f9d62	c->uv_offx2 = dst_stride + 16;
a4388ebd
e003da71	av_assert0(c->chrDstH <= dstH);
a4388ebd
ef0ee7f6	if (flags & SWS_PRINT_INFO) {
2a6c95d8	const char scaler = NULL, cpucaps;
a4388ebd
2a6c95d8	for (i = 0; i < FF_ARRAY_ELEMS(scale_algorithms); i++) { if (flags & scale_algorithms[i].flag) { scaler = scale_algorithms[i].description; break; } } if (!scaler) scaler = "ehh flags invalid?!"; av_log(c, AV_LOG_INFO, "%s scaler, from %s to %s%s ",
9d052adb	scaler,
e1197b9e	av_get_pix_fmt_name(srcFormat),
a4388ebd	#ifdef DITHER1XBPP
716d413c	dstFormat == AV_PIX_FMT_BGR555 \|\| dstFormat == AV_PIX_FMT_BGR565 \|\| dstFormat == AV_PIX_FMT_RGB444BE \|\| dstFormat == AV_PIX_FMT_RGB444LE \|\| dstFormat == AV_PIX_FMT_BGR444BE \|\| dstFormat == AV_PIX_FMT_BGR444LE ?
ef0ee7f6	"dithered " : "",
a4388ebd	#else "", #endif
e1197b9e	av_get_pix_fmt_name(dstFormat));
a4388ebd
e0c6cce4	if (INLINE_MMXEXT(cpu_flags))
a446657d	cpucaps = "MMXEXT";
e0c6cce4	else if (INLINE_AMD3DNOW(cpu_flags))
a446657d	cpucaps = "3DNOW";
e0c6cce4	else if (INLINE_MMX(cpu_flags))
a446657d	cpucaps = "MMX";
f61bece6	else if (PPC_ALTIVEC(cpu_flags))
a446657d	cpucaps = "AltiVec";
ef0ee7f6	else
a446657d	cpucaps = "C"; av_log(c, AV_LOG_INFO, "using %s\n", cpucaps);
a4388ebd	av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
ef0ee7f6	av_log(c, AV_LOG_DEBUG, "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
a4388ebd	c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
ef0ee7f6	av_log(c, AV_LOG_DEBUG, "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n", c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);
a4388ebd	}
d0e0757e	/* alpha blend special case, note this has been split via cascaded contexts if its scaled */ if (unscaled && !usesHFilter && !usesVFilter && c->alphablend != SWS_ALPHA_BLEND_NONE && isALPHA(srcFormat) && (c->srcRange == c->dstRange \|\| isAnyRGB(dstFormat)) && alphaless_fmt(srcFormat) == dstFormat ) { c->swscale = ff_sws_alphablendaway; if (flags & SWS_PRINT_INFO) av_log(c, AV_LOG_INFO, "using alpha blendaway %s -> %s special converter\n", av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat)); return 0; }
fa98885b	/* unscaled special cases */ if (unscaled && !usesHFilter && !usesVFilter && (c->srcRange == c->dstRange \|\| isAnyRGB(dstFormat))) { ff_get_unscaled_swscale(c); if (c->swscale) { if (flags & SWS_PRINT_INFO) av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n", av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat)); return 0; } }
1909f6b1	c->swscale = ff_getSwsFunc(c);
e0a3173a	return ff_init_filters(c);
ef0ee7f6	fail: // FIXME replace things by appropriate error codes
fba89461	if (ret == RETCODE_USE_CASCADE) { int tmpW = sqrt(srcW * (int64_t)dstW); int tmpH = sqrt(srcH * (int64_t)dstH); enum AVPixelFormat tmpFormat = AV_PIX_FMT_YUV420P;
b83d8be6	if (isALPHA(srcFormat)) tmpFormat = AV_PIX_FMT_YUVA420P;
fba89461	if (srcW(int64_t)srcH <= 4LLdstW*dstH) return AVERROR(EINVAL); ret = av_image_alloc(c->cascaded_tmp, c->cascaded_tmpStride, tmpW, tmpH, tmpFormat, 64); if (ret < 0) return ret; c->cascaded_context[0] = sws_getContext(srcW, srcH, srcFormat, tmpW, tmpH, tmpFormat, flags, srcFilter, NULL, c->param); if (!c->cascaded_context[0]) return -1; c->cascaded_context[1] = sws_getContext(tmpW, tmpH, tmpFormat, dstW, dstH, dstFormat, flags, NULL, dstFilter, c->param); if (!c->cascaded_context[1]) return -1; return 0; }
635d4aed	return -1; }
a4388ebd
c382d9e8	SwsContext sws_alloc_set_opts(int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, const double param)
635d4aed	{ SwsContext *c;
ef0ee7f6	if (!(c = sws_alloc_context()))
635d4aed	return NULL;
ef0ee7f6	c->flags = flags; c->srcW = srcW; c->srcH = srcH; c->dstW = dstW; c->dstH = dstH; c->srcFormat = srcFormat; c->dstFormat = dstFormat;
635d4aed	if (param) { c->param[0] = param[0]; c->param[1] = param[1]; }
c382d9e8	return c; } SwsContext sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter srcFilter, SwsFilter dstFilter, const double param) { SwsContext *c; c = sws_alloc_set_opts(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, param); if (!c) return NULL;
ef0ee7f6	if (sws_init_context(c, srcFilter, dstFilter) < 0) {
635d4aed	sws_freeContext(c); return NULL; } return c;
a4388ebd	}
80b5a1e2	static int isnan_vec(SwsVector a) { int i; for (i=0; i<a->length; i++) if (isnan(a->coeff[i])) return 1; return 0; } static void makenan_vec(SwsVector a) { int i; for (i=0; i<a->length; i++) a->coeff[i] = NAN; }
a4388ebd	SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, float lumaSharpen, float chromaSharpen, float chromaHShift, float chromaVShift, int verbose) {
ef0ee7f6	SwsFilter *filter = av_malloc(sizeof(SwsFilter));
a4388ebd	if (!filter) return NULL;
ef0ee7f6	if (lumaGBlur != 0.0) { filter->lumH = sws_getGaussianVec(lumaGBlur, 3.0); filter->lumV = sws_getGaussianVec(lumaGBlur, 3.0);
a4388ebd	} else {
ef0ee7f6	filter->lumH = sws_getIdentityVec(); filter->lumV = sws_getIdentityVec();
a4388ebd	}
ef0ee7f6	if (chromaGBlur != 0.0) { filter->chrH = sws_getGaussianVec(chromaGBlur, 3.0); filter->chrV = sws_getGaussianVec(chromaGBlur, 3.0);
a4388ebd	} else {
ef0ee7f6	filter->chrH = sws_getIdentityVec(); filter->chrV = sws_getIdentityVec();
a4388ebd	}
7ebb3022	if (!filter->lumH \|\| !filter->lumV \|\| !filter->chrH \|\| !filter->chrV) goto fail;
e51f2212
ef0ee7f6	if (chromaSharpen != 0.0) { SwsVector *id = sws_getIdentityVec();
7ebb3022	if (!id) goto fail;
a4388ebd	sws_scaleVec(filter->chrH, -chromaSharpen); sws_scaleVec(filter->chrV, -chromaSharpen); sws_addVec(filter->chrH, id); sws_addVec(filter->chrV, id); sws_freeVec(id); }
ef0ee7f6	if (lumaSharpen != 0.0) { SwsVector *id = sws_getIdentityVec();
7ebb3022	if (!id) goto fail;
a4388ebd	sws_scaleVec(filter->lumH, -lumaSharpen); sws_scaleVec(filter->lumV, -lumaSharpen); sws_addVec(filter->lumH, id); sws_addVec(filter->lumV, id); sws_freeVec(id); } if (chromaHShift != 0.0)
ef0ee7f6	sws_shiftVec(filter->chrH, (int)(chromaHShift + 0.5));
a4388ebd	if (chromaVShift != 0.0)
ef0ee7f6	sws_shiftVec(filter->chrV, (int)(chromaVShift + 0.5));
a4388ebd	sws_normalizeVec(filter->chrH, 1.0); sws_normalizeVec(filter->chrV, 1.0); sws_normalizeVec(filter->lumH, 1.0); sws_normalizeVec(filter->lumV, 1.0);
80b5a1e2	if (isnan_vec(filter->chrH) \|\| isnan_vec(filter->chrV) \|\| isnan_vec(filter->lumH) \|\| isnan_vec(filter->lumV)) goto fail;
ef0ee7f6	if (verbose) sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG); if (verbose) sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);
a4388ebd	return filter;
7ebb3022	fail: sws_freeVec(filter->lumH); sws_freeVec(filter->lumV); sws_freeVec(filter->chrH); sws_freeVec(filter->chrV); av_freep(&filter); return NULL;
a4388ebd	} SwsVector *sws_allocVec(int length) {
fe573d1a	SwsVector *vec; if(length <= 0 \|\| length > INT_MAX/ sizeof(double)) return NULL; vec = av_malloc(sizeof(SwsVector));
a4388ebd	if (!vec) return NULL; vec->length = length; vec->coeff = av_malloc(sizeof(double) * length); if (!vec->coeff) av_freep(&vec); return vec; } SwsVector *sws_getGaussianVec(double variance, double quality) {
ef0ee7f6	const int length = (int)(variance * quality + 0.5) \| 1;
a4388ebd	int i;
ef0ee7f6	double middle = (length - 1) * 0.5;
e823e736	SwsVector *vec; if(variance < 0 \|\| quality < 0) return NULL; vec = sws_allocVec(length);
a4388ebd	if (!vec) return NULL;
ef0ee7f6	for (i = 0; i < length; i++) { double dist = i - middle; vec->coeff[i] = exp(-dist * dist / (2 * variance * variance)) / sqrt(2 * variance * M_PI);
a4388ebd	} sws_normalizeVec(vec, 1.0); return vec; }
3b905b9f	/** * Allocate and return a vector with length coefficients, all * with the same value c. */ #if !FF_API_SWS_VECTOR static #endif
a4388ebd	SwsVector *sws_getConstVec(double c, int length) { int i;
ef0ee7f6	SwsVector *vec = sws_allocVec(length);
a4388ebd	if (!vec) return NULL;
ef0ee7f6	for (i = 0; i < length; i++) vec->coeff[i] = c;
a4388ebd	return vec; }
3b905b9f	/** * Allocate and return a vector with just one coefficient, with * value 1.0. */ #if !FF_API_SWS_VECTOR static #endif
a4388ebd	SwsVector *sws_getIdentityVec(void) { return sws_getConstVec(1.0, 1); }
627686e6	static double sws_dcVec(SwsVector *a)
a4388ebd	{ int i;
ef0ee7f6	double sum = 0;
a4388ebd
ef0ee7f6	for (i = 0; i < a->length; i++) sum += a->coeff[i];
a4388ebd	return sum; } void sws_scaleVec(SwsVector *a, double scalar) { int i;
ef0ee7f6	for (i = 0; i < a->length; i++) a->coeff[i] *= scalar;
a4388ebd	} void sws_normalizeVec(SwsVector *a, double height) {
ef0ee7f6	sws_scaleVec(a, height / sws_dcVec(a));
a4388ebd	}
3b905b9f	#if FF_API_SWS_VECTOR
a4388ebd	static SwsVector sws_getConvVec(SwsVector a, SwsVector *b) {
ef0ee7f6	int length = a->length + b->length - 1;
a4388ebd	int i, j;
ef0ee7f6	SwsVector *vec = sws_getConstVec(0.0, length);
a4388ebd	if (!vec) return NULL;
ef0ee7f6	for (i = 0; i < a->length; i++) { for (j = 0; j < b->length; j++) { vec->coeff[i + j] += a->coeff[i] * b->coeff[j];
a4388ebd	} } return vec; }
3b905b9f	#endif
a4388ebd	static SwsVector sws_sumVec(SwsVector a, SwsVector *b) {
ef0ee7f6	int length = FFMAX(a->length, b->length);
a4388ebd	int i;
ef0ee7f6	SwsVector *vec = sws_getConstVec(0.0, length);
a4388ebd	if (!vec) return NULL;
ef0ee7f6	for (i = 0; i < a->length; i++) vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i]; for (i = 0; i < b->length; i++) vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] += b->coeff[i];
a4388ebd	return vec; }
3b905b9f	#if FF_API_SWS_VECTOR
a4388ebd	static SwsVector sws_diffVec(SwsVector a, SwsVector *b) {
ef0ee7f6	int length = FFMAX(a->length, b->length);
a4388ebd	int i;
ef0ee7f6	SwsVector *vec = sws_getConstVec(0.0, length);
a4388ebd	if (!vec) return NULL;
ef0ee7f6	for (i = 0; i < a->length; i++) vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i]; for (i = 0; i < b->length; i++) vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] -= b->coeff[i];
a4388ebd	return vec; }
3b905b9f	#endif
a4388ebd	/* shift left / or right if "shift" is negative / static SwsVector sws_getShiftedVec(SwsVector *a, int shift) {
ef0ee7f6	int length = a->length + FFABS(shift) * 2;
a4388ebd	int i;
ef0ee7f6	SwsVector *vec = sws_getConstVec(0.0, length);
a4388ebd	if (!vec) return NULL;
ef0ee7f6	for (i = 0; i < a->length; i++) { vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2 - shift] = a->coeff[i];
a4388ebd	} return vec; }
3b905b9f	#if !FF_API_SWS_VECTOR static #endif
a4388ebd	void sws_shiftVec(SwsVector *a, int shift) {
ef0ee7f6	SwsVector *shifted = sws_getShiftedVec(a, shift);
80b5a1e2	if (!shifted) { makenan_vec(a); return; }
a4388ebd	av_free(a->coeff);
ef0ee7f6	a->coeff = shifted->coeff; a->length = shifted->length;
a4388ebd	av_free(shifted); }
3b905b9f	#if !FF_API_SWS_VECTOR static #endif
a4388ebd	void sws_addVec(SwsVector a, SwsVector b) {
ef0ee7f6	SwsVector *sum = sws_sumVec(a, b);
80b5a1e2	if (!sum) { makenan_vec(a); return; }
a4388ebd	av_free(a->coeff);
ef0ee7f6	a->coeff = sum->coeff; a->length = sum->length;
a4388ebd	av_free(sum); }
3b905b9f	#if FF_API_SWS_VECTOR
a4388ebd	void sws_subVec(SwsVector a, SwsVector b) {
ef0ee7f6	SwsVector *diff = sws_diffVec(a, b);
80b5a1e2	if (!diff) { makenan_vec(a); return; }
a4388ebd	av_free(a->coeff);
ef0ee7f6	a->coeff = diff->coeff; a->length = diff->length;
a4388ebd	av_free(diff); } void sws_convVec(SwsVector a, SwsVector b) {
ef0ee7f6	SwsVector *conv = sws_getConvVec(a, b);
80b5a1e2	if (!conv) { makenan_vec(a); return; }
a4388ebd	av_free(a->coeff);
ef0ee7f6	a->coeff = conv->coeff; a->length = conv->length;
a4388ebd	av_free(conv); } SwsVector sws_cloneVec(SwsVector a) {
ef0ee7f6	SwsVector *vec = sws_allocVec(a->length);
a4388ebd	if (!vec) return NULL;
c914c99d	memcpy(vec->coeff, a->coeff, a->length * sizeof(*a->coeff));
a4388ebd	return vec; }
3b905b9f	#endif
a4388ebd
3b905b9f	/** * Print with av_log() a textual representation of the vector a * if log_level <= av_log_level. */ #if !FF_API_SWS_VECTOR static #endif
a4388ebd	void sws_printVec2(SwsVector a, AVClass log_ctx, int log_level) { int i;
ef0ee7f6	double max = 0; double min = 0;
a4388ebd	double range;
ef0ee7f6	for (i = 0; i < a->length; i++) if (a->coeff[i] > max) max = a->coeff[i];
a4388ebd
ef0ee7f6	for (i = 0; i < a->length; i++) if (a->coeff[i] < min) min = a->coeff[i];
a4388ebd
ef0ee7f6	range = max - min;
a4388ebd
ef0ee7f6	for (i = 0; i < a->length; i++) { int x = (int)((a->coeff[i] - min) * 60.0 / range + 0.5);
a4388ebd	av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);
ef0ee7f6	for (; x > 0; x--) av_log(log_ctx, log_level, " ");
a4388ebd	av_log(log_ctx, log_level, "\|\n"); } } void sws_freeVec(SwsVector *a) {
ef0ee7f6	if (!a) return;
a4388ebd	av_freep(&a->coeff);
ef0ee7f6	a->length = 0;
a4388ebd	av_free(a); } void sws_freeFilter(SwsFilter *filter) {
ef0ee7f6	if (!filter) return;
2d28950d	sws_freeVec(filter->lumH); sws_freeVec(filter->lumV); sws_freeVec(filter->chrH); sws_freeVec(filter->chrV);
a4388ebd	av_free(filter); } void sws_freeContext(SwsContext *c) { int i;
ef0ee7f6	if (!c) return;
a4388ebd
646ade76	for (i = 0; i < 4; i++) av_freep(&c->dither_error[i]);
a4388ebd	av_freep(&c->vLumFilter); av_freep(&c->vChrFilter); av_freep(&c->hLumFilter); av_freep(&c->hChrFilter);
f684f3c5	#if HAVE_ALTIVEC
a4388ebd	av_freep(&c->vYCoeffsBank); av_freep(&c->vCCoeffsBank); #endif av_freep(&c->vLumFilterPos); av_freep(&c->vChrFilterPos); av_freep(&c->hLumFilterPos); av_freep(&c->hChrFilterPos);
17337f54	#if HAVE_MMX_INLINE
95cd815c	#if USE_MMAP
a65bdceb	if (c->lumMmxextFilterCode) munmap(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize); if (c->chrMmxextFilterCode) munmap(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize);
a4388ebd	#elif HAVE_VIRTUALALLOC
a65bdceb	if (c->lumMmxextFilterCode) VirtualFree(c->lumMmxextFilterCode, 0, MEM_RELEASE); if (c->chrMmxextFilterCode) VirtualFree(c->chrMmxextFilterCode, 0, MEM_RELEASE);
a4388ebd	#else
a65bdceb	av_free(c->lumMmxextFilterCode); av_free(c->chrMmxextFilterCode);
a4388ebd	#endif
a65bdceb	c->lumMmxextFilterCode = NULL; c->chrMmxextFilterCode = NULL;
17337f54	#endif /* HAVE_MMX_INLINE */
a4388ebd	av_freep(&c->yuvTable);
485d73ef	av_freep(&c->formatConvBuffer);
a4388ebd
fba89461	sws_freeContext(c->cascaded_context[0]); sws_freeContext(c->cascaded_context[1]);
2a7128f4	sws_freeContext(c->cascaded_context[2]);
fba89461	memset(c->cascaded_context, 0, sizeof(c->cascaded_context)); av_freep(&c->cascaded_tmp[0]);
2a7128f4	av_freep(&c->cascaded1_tmp[0]); av_freep(&c->gamma); av_freep(&c->inv_gamma);
e0a3173a	ff_free_filters(c);
fba89461
a4388ebd	av_free(c); }
ef0ee7f6	struct SwsContext sws_getCachedContext(struct SwsContext context, int srcW,
716d413c	int srcH, enum AVPixelFormat srcFormat,
ef0ee7f6	int dstW, int dstH,
716d413c	enum AVPixelFormat dstFormat, int flags,
ef0ee7f6	SwsFilter srcFilter, SwsFilter dstFilter, const double *param)
a4388ebd	{
ef0ee7f6	static const double default_param[2] = { SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT };
18982f08	int64_t src_h_chr_pos = -513, dst_h_chr_pos = -513, src_v_chr_pos = -513, dst_v_chr_pos = -513;
a4388ebd	if (!param) param = default_param;
5a011d8b	if (context &&
22b6a24c	(context->srcW != srcW \|\| context->srcH != srcH \|\| context->srcFormat != srcFormat \|\| context->dstW != dstW \|\| context->dstH != dstH \|\| context->dstFormat != dstFormat \|\| context->flags != flags \|\| context->param[0] != param[0] \|\|
b623d0cb	context->param[1] != param[1])) {
18982f08	av_opt_get_int(context, "src_h_chr_pos", 0, &src_h_chr_pos); av_opt_get_int(context, "src_v_chr_pos", 0, &src_v_chr_pos); av_opt_get_int(context, "dst_h_chr_pos", 0, &dst_h_chr_pos); av_opt_get_int(context, "dst_v_chr_pos", 0, &dst_v_chr_pos);
b623d0cb	sws_freeContext(context); context = NULL; }
5a011d8b
a4388ebd	if (!context) {
0810a584	if (!(context = sws_alloc_context())) return NULL; context->srcW = srcW; context->srcH = srcH; context->srcFormat = srcFormat;
12eef0d1	context->dstW = dstW; context->dstH = dstH;
0810a584	context->dstFormat = dstFormat; context->flags = flags; context->param[0] = param[0]; context->param[1] = param[1];
18982f08	av_opt_set_int(context, "src_h_chr_pos", src_h_chr_pos, 0); av_opt_set_int(context, "src_v_chr_pos", src_v_chr_pos, 0); av_opt_set_int(context, "dst_h_chr_pos", dst_h_chr_pos, 0); av_opt_set_int(context, "dst_v_chr_pos", dst_v_chr_pos, 0);
0810a584	if (sws_init_context(context, srcFilter, dstFilter) < 0) { sws_freeContext(context); return NULL; }
a4388ebd	} return context; }