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135 lines
4.1 KiB
135 lines
4.1 KiB
/* |
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Copyright (C) 2001-2002 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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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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//the following 4 flags are not completly implemented |
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//internal chrominace subsamling info |
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#define SWS_FULL_CHR_V 0x100 |
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#define SWS_FULL_CHR_H_INT 0x200 |
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//input subsampling info |
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#define SWS_FULL_CHR_H_INP 0x400 |
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#define SWS_DIRECT_BGR 0x800 |
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#define SWS_PRINT_INFO 0x1000 |
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#define SWS_MAX_REDUCE_CUTOFF 0.002 |
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/* this struct should be aligned on at least 32-byte boundary */ |
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typedef struct SwsContext{ |
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int srcW, srcH, dstW, dstH; |
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int chrSrcW, chrSrcH, chrDstW, chrDstH; |
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int lumXInc, chrXInc; |
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int lumYInc, chrYInc; |
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int dstFormat, srcFormat; |
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int16_t **lumPixBuf; |
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int16_t **chrPixBuf; |
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int16_t *hLumFilter; |
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int16_t *hLumFilterPos; |
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int16_t *hChrFilter; |
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int16_t *hChrFilterPos; |
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int16_t *vLumFilter; |
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int16_t *vLumFilterPos; |
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int16_t *vChrFilter; |
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int16_t *vChrFilterPos; |
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// Contain simply the values from v(Lum|Chr)Filter just nicely packed for mmx |
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int16_t *lumMmxFilter; |
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int16_t *chrMmxFilter; |
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uint8_t formatConvBuffer[4000]; //FIXME dynamic alloc, but we have to change alot of code for this to be usefull |
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int hLumFilterSize; |
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int hChrFilterSize; |
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int vLumFilterSize; |
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int vChrFilterSize; |
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int vLumBufSize; |
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int vChrBufSize; |
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uint8_t __attribute__((aligned(32))) funnyYCode[10000]; |
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uint8_t __attribute__((aligned(32))) funnyUVCode[10000]; |
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int canMMX2BeUsed; |
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int lastInLumBuf; |
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int lastInChrBuf; |
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int lumBufIndex; |
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int chrBufIndex; |
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int dstY; |
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int flags; |
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void (*swScale)(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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} SwsContext; |
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//FIXME check init (where 0) |
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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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// *** bilinear scaling and yuv->rgb & yuv->yuv conversion of yv12 slices: |
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// *** Note: it's called multiple times while decoding a frame, first time y==0 |
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// dstbpp == 12 -> yv12 output |
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// will use sws_flags |
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void SwScale_YV12slice(unsigned char* src[],int srcStride[], int srcSliceY, |
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int srcSliceH, uint8_t* dst[], int dstStride, int dstbpp, |
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int srcW, int srcH, int dstW, int dstH); |
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// Obsolete, will be removed soon |
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void SwScale_Init(); |
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void freeSwsContext(SwsContext *swsContext); |
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SwsContext *getSwsContextFromCmdLine(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat); |
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SwsContext *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags, |
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SwsFilter *srcFilter, SwsFilter *dstFilter); |
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SwsVector *getGaussianVec(double variance, double quality); |
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SwsVector *getConstVec(double c, int length); |
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SwsVector *getIdentityVec(void); |
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void scaleVec(SwsVector *a, double scalar); |
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void normalizeVec(SwsVector *a, double height); |
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void convVec(SwsVector *a, SwsVector *b); |
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void addVec(SwsVector *a, SwsVector *b); |
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void subVec(SwsVector *a, SwsVector *b); |
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void shiftVec(SwsVector *a, int shift); |
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SwsVector *cloneVec(SwsVector *a); |
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void printVec(SwsVector *a); |
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void freeVec(SwsVector *a); |
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