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/* 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_FULL_UV_IPOL 0x100
#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{
int srcW, srcH, dstW, dstH;
int chrDstW, chrDstH;
int lumXInc, chrXInc;
int lumYInc, chrYInc;
int dstFormat, srcFormat;
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;
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];
int canMMX2BeUsed;
int lastInLumBuf;
int lastInChrBuf;
int lumBufIndex;
int chrBufIndex;
int dstY;
int flags;
} 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 *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,
SwsFilter *srcFilter, SwsFilter *dstFilter);
extern void (*swScale)(SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[]);
SwsVector *getGaussianVec(double variance, double quality);
SwsVector *getIdentityVec(void);
void scaleVec(SwsVector *a, double scalar);
void normalizeVec(SwsVector *a, double height);
SwsVector *convVec(SwsVector *a, SwsVector *b);
SwsVector *sumVec(SwsVector *a, SwsVector *b);
SwsVector *diffVec(SwsVector *a, SwsVector *b);
SwsVector *shiftVec(SwsVector *a, int shift);
void printVec(SwsVector *a);
void freeVec(SwsVector *a);
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