PeerStreamer

/*

 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>

 *

 * This file is part of FFmpeg.

 *

 * 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.

 *

 * FFmpeg is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with FFmpeg; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */

#ifndef FFMPEG_SWSCALE_H

#define FFMPEG_SWSCALE_H

/**

 * @file swscale.h

 * @brief

 *     external api for the swscale stuff

 */

#include "avutil.h"

#define LIBSWSCALE_VERSION_TRIPLET 0,5,0

#define LIBSWSCALE_VERSION_INT  AV_VERSION_INT(LIBSWSCALE_VERSION_TRIPLET)

#define LIBSWSCALE_VERSION      AV_VERSION(LIBSWSCALE_VERSION_TRIPLET)

#define LIBSWSCALE_BUILD        LIBSWSCALE_VERSION_INT

#define LIBSWSCALE_IDENT        "SwS" AV_STRINGIFY(LIBSWSCALE_VERSION)

/* values for the flags, the stuff on the command line is different */

#define SWS_FAST_BILINEAR     1

#define SWS_BILINEAR          2

#define SWS_BICUBIC           4

#define SWS_X                 8

#define SWS_POINT          0x10

#define SWS_AREA           0x20

#define SWS_BICUBLIN       0x40

#define SWS_GAUSS          0x80

#define SWS_SINC          0x100

#define SWS_LANCZOS       0x200

#define SWS_SPLINE        0x400

#define SWS_SRC_V_CHR_DROP_MASK     0x30000

#define SWS_SRC_V_CHR_DROP_SHIFT    16

#define SWS_PARAM_DEFAULT           123456

#define SWS_PRINT_INFO              0x1000

//the following 3 flags are not completely implemented

//internal chrominace subsampling info

#define SWS_FULL_CHR_H_INT    0x2000

//input subsampling info

#define SWS_FULL_CHR_H_INP    0x4000

#define SWS_DIRECT_BGR        0x8000

#define SWS_ACCURATE_RND      0x40000

#define SWS_CPU_CAPS_MMX      0x80000000

#define SWS_CPU_CAPS_MMX2     0x20000000

#define SWS_CPU_CAPS_3DNOW    0x40000000

#define SWS_CPU_CAPS_ALTIVEC  0x10000000

#define SWS_CPU_CAPS_BFIN     0x01000000

#define SWS_MAX_REDUCE_CUTOFF 0.002

#define SWS_CS_ITU709         1

#define SWS_CS_FCC            4

#define SWS_CS_ITU601         5

#define SWS_CS_ITU624         5

#define SWS_CS_SMPTE170M      5

#define SWS_CS_SMPTE240M      7

#define SWS_CS_DEFAULT        5

// when used for filters they must have an odd number of elements

// coeffs cannot be shared between vectors

typedef struct {

    double *coeff;

    int length;

} SwsVector;

// vectors can be shared

typedef struct {

    SwsVector *lumH;

    SwsVector *lumV;

    SwsVector *chrH;

    SwsVector *chrV;

} SwsFilter;

struct SwsContext;

void sws_freeContext(struct SwsContext *swsContext);

struct SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,

                                  SwsFilter *srcFilter, SwsFilter *dstFilter, double *param);

int sws_scale(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,

              int srcSliceH, uint8_t* dst[], int dstStride[]);

int sws_scale_ordered(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,

                      int srcSliceH, uint8_t* dst[], int dstStride[]) attribute_deprecated;

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);

int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation);

SwsVector *sws_getGaussianVec(double variance, double quality);

SwsVector *sws_getConstVec(double c, int length);

SwsVector *sws_getIdentityVec(void);

void sws_scaleVec(SwsVector *a, double scalar);

void sws_normalizeVec(SwsVector *a, double height);

void sws_convVec(SwsVector *a, SwsVector *b);

void sws_addVec(SwsVector *a, SwsVector *b);

void sws_subVec(SwsVector *a, SwsVector *b);

void sws_shiftVec(SwsVector *a, int shift);

SwsVector *sws_cloneVec(SwsVector *a);

void sws_printVec(SwsVector *a);

void sws_freeVec(SwsVector *a);

SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

                                float lumaSarpen, float chromaSharpen,

                                float chromaHShift, float chromaVShift,

                                int verbose);

void sws_freeFilter(SwsFilter *filter);

struct SwsContext *sws_getCachedContext(struct SwsContext *context,

                                        int srcW, int srcH, int srcFormat,

                                        int dstW, int dstH, int dstFormat, int flags,

                                        SwsFilter *srcFilter, SwsFilter *dstFilter, double *param);

#endif /* FFMPEG_SWSCALE_H */