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bca11e75fb
the +-1 issue is limited to >2tap vertical filters, so bilinear upscale was unaffected the new code is sometime faster sometimes slower but the difference is significant (~20%) so its optional and enabled with arnd=1 Originally committed as revision 19177 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
140 lines
4.3 KiB
C
140 lines
4.3 KiB
C
/*
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Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef SWSCALE_H
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#define SWSCALE_H
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/**
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* @file swscale.h
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* @brief
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* external api for the swscale stuff
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define AV_STRINGIFY(s) AV_TOSTRING(s)
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#define AV_TOSTRING(s) #s
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#define LIBSWSCALE_VERSION_INT ((0<<16)+(5<<8)+0)
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#define LIBSWSCALE_VERSION 0.5.0
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#define LIBSWSCALE_BUILD LIBSWSCALE_VERSION_INT
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#define LIBSWSCALE_IDENT "SwS" AV_STRINGIFY(LIBSWSCALE_VERSION)
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/* values for the flags, the stuff on the command line is different */
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#define SWS_FAST_BILINEAR 1
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#define SWS_BILINEAR 2
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#define SWS_BICUBIC 4
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#define SWS_X 8
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#define SWS_POINT 0x10
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#define SWS_AREA 0x20
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#define SWS_BICUBLIN 0x40
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#define SWS_GAUSS 0x80
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#define SWS_SINC 0x100
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#define SWS_LANCZOS 0x200
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#define SWS_SPLINE 0x400
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#define SWS_SRC_V_CHR_DROP_MASK 0x30000
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#define SWS_SRC_V_CHR_DROP_SHIFT 16
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#define SWS_PARAM_DEFAULT 123456
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#define SWS_PRINT_INFO 0x1000
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//the following 3 flags are not completly implemented
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//internal chrominace subsamling info
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#define SWS_FULL_CHR_H_INT 0x2000
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//input subsampling info
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#define SWS_FULL_CHR_H_INP 0x4000
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#define SWS_DIRECT_BGR 0x8000
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#define SWS_ACCURATE_RND 0x40000
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#define SWS_CPU_CAPS_MMX 0x80000000
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#define SWS_CPU_CAPS_MMX2 0x20000000
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#define SWS_CPU_CAPS_3DNOW 0x40000000
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#define SWS_CPU_CAPS_ALTIVEC 0x10000000
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#define SWS_MAX_REDUCE_CUTOFF 0.002
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#define SWS_CS_ITU709 1
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#define SWS_CS_FCC 4
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#define SWS_CS_ITU601 5
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#define SWS_CS_ITU624 5
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#define SWS_CS_SMPTE170M 5
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#define SWS_CS_SMPTE240M 7
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#define SWS_CS_DEFAULT 5
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// when used for filters they must have an odd number of elements
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// coeffs cannot be shared between vectors
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typedef struct {
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double *coeff;
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int length;
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} SwsVector;
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// vectors can be shared
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typedef struct {
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SwsVector *lumH;
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SwsVector *lumV;
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SwsVector *chrH;
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SwsVector *chrV;
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} SwsFilter;
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struct SwsContext;
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void sws_freeContext(struct SwsContext *swsContext);
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struct SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,
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SwsFilter *srcFilter, SwsFilter *dstFilter, double *param);
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int sws_scale(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
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int srcSliceH, uint8_t* dst[], int dstStride[]);
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int sws_scale_ordered(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
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int srcSliceH, uint8_t* dst[], int dstStride[]);
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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);
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int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation);
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SwsVector *sws_getGaussianVec(double variance, double quality);
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SwsVector *sws_getConstVec(double c, int length);
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SwsVector *sws_getIdentityVec(void);
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void sws_scaleVec(SwsVector *a, double scalar);
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void sws_normalizeVec(SwsVector *a, double height);
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void sws_convVec(SwsVector *a, SwsVector *b);
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void sws_addVec(SwsVector *a, SwsVector *b);
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void sws_subVec(SwsVector *a, SwsVector *b);
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void sws_shiftVec(SwsVector *a, int shift);
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SwsVector *sws_cloneVec(SwsVector *a);
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void sws_printVec(SwsVector *a);
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void sws_freeVec(SwsVector *a);
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SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
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float lumaSarpen, float chromaSharpen,
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float chromaHShift, float chromaVShift,
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int verbose);
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void sws_freeFilter(SwsFilter *filter);
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#ifdef __cplusplus
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}
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#endif
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#endif
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