mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
146 lines
4.4 KiB
146 lines
4.4 KiB
/* |
|
Copyright (C) 2001-2002 Michael Niedermayer <michaelni@gmx.at> |
|
|
|
This program is free software; you can redistribute it and/or modify |
|
it under the terms of the GNU General Public License as published by |
|
the Free Software Foundation; either version 2 of the License, or |
|
(at your option) any later version. |
|
|
|
This program 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 General Public License for more details. |
|
|
|
You should have received a copy of the GNU General Public License |
|
along with this program; if not, write to the Free Software |
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
|
*/ |
|
|
|
/* 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_SRC_V_CHR_DROP_MASK 0x300 |
|
#define SWS_SRC_V_CHR_DROP_SHIFT 8 |
|
|
|
//the following 4 flags are not completly implemented |
|
//internal chrominace subsamling 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_PRINT_INFO 0x1000 |
|
|
|
#define SWS_MAX_REDUCE_CUTOFF 0.002 |
|
|
|
/* this struct should be aligned on at least 32-byte boundary */ |
|
typedef struct SwsContext{ |
|
int srcW, srcH, dstW, dstH; |
|
int chrSrcW, chrSrcH, chrDstW, chrDstH; |
|
int lumXInc, chrXInc; |
|
int lumYInc, chrYInc; |
|
int dstFormat, srcFormat; |
|
int chrSrcHSubSample, chrSrcVSubSample; |
|
int chrIntHSubSample, chrIntVSubSample; |
|
int chrDstHSubSample, chrDstVSubSample; |
|
int vChrDrop; |
|
|
|
int16_t **lumPixBuf; |
|
int16_t **chrPixBuf; |
|
int16_t *hLumFilter; |
|
int16_t *hLumFilterPos; |
|
int16_t *hChrFilter; |
|
int16_t *hChrFilterPos; |
|
int16_t *vLumFilter; |
|
int16_t *vLumFilterPos; |
|
int16_t *vChrFilter; |
|
int16_t *vChrFilterPos; |
|
|
|
// Contain simply the values from v(Lum|Chr)Filter just nicely packed for mmx |
|
int16_t *lumMmxFilter; |
|
int16_t *chrMmxFilter; |
|
uint8_t formatConvBuffer[4000]; //FIXME dynamic alloc, but we have to change alot of code for this to be usefull |
|
|
|
int hLumFilterSize; |
|
int hChrFilterSize; |
|
int vLumFilterSize; |
|
int vChrFilterSize; |
|
int vLumBufSize; |
|
int vChrBufSize; |
|
|
|
uint8_t __attribute__((aligned(32))) funnyYCode[10000]; |
|
uint8_t __attribute__((aligned(32))) funnyUVCode[10000]; |
|
int32_t *lumMmx2FilterPos; |
|
int32_t *chrMmx2FilterPos; |
|
int16_t *lumMmx2Filter; |
|
int16_t *chrMmx2Filter; |
|
|
|
int canMMX2BeUsed; |
|
|
|
int lastInLumBuf; |
|
int lastInChrBuf; |
|
int lumBufIndex; |
|
int chrBufIndex; |
|
int dstY; |
|
int flags; |
|
|
|
void (*swScale)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY, |
|
int srcSliceH, uint8_t* dst[], int dstStride[]); |
|
} SwsContext; |
|
//FIXME check init (where 0) |
|
|
|
// 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; |
|
|
|
|
|
// *** bilinear scaling and yuv->rgb & yuv->yuv conversion of yv12 slices: |
|
// *** Note: it's called multiple times while decoding a frame, first time y==0 |
|
// dstbpp == 12 -> yv12 output |
|
// will use sws_flags |
|
void SwScale_YV12slice(unsigned char* src[],int srcStride[], int srcSliceY, |
|
int srcSliceH, uint8_t* dst[], int dstStride, int dstbpp, |
|
int srcW, int srcH, int dstW, int dstH); |
|
|
|
// Obsolete, will be removed soon |
|
void SwScale_Init(); |
|
|
|
|
|
|
|
void freeSwsContext(SwsContext *swsContext); |
|
|
|
SwsContext *getSwsContextFromCmdLine(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat); |
|
SwsContext *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags, |
|
SwsFilter *srcFilter, SwsFilter *dstFilter); |
|
void swsGetFlagsAndFilterFromCmdLine(int *flags, SwsFilter **srcFilterParam, SwsFilter **dstFilterParam); |
|
|
|
SwsVector *getGaussianVec(double variance, double quality); |
|
SwsVector *getConstVec(double c, int length); |
|
SwsVector *getIdentityVec(void); |
|
void scaleVec(SwsVector *a, double scalar); |
|
void normalizeVec(SwsVector *a, double height); |
|
void convVec(SwsVector *a, SwsVector *b); |
|
void addVec(SwsVector *a, SwsVector *b); |
|
void subVec(SwsVector *a, SwsVector *b); |
|
void shiftVec(SwsVector *a, int shift); |
|
SwsVector *cloneVec(SwsVector *a); |
|
|
|
void printVec(SwsVector *a); |
|
void freeVec(SwsVector *a); |
|
|
|
|