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/*-----------------------------------------------------------------
LOG
GEM - Graphics Environment for Multimedia
helper stuff for ports of Pete's Plugins
http://www.petewarden.com
Copyright (c) 2004-2011 IOhannes m zmölnig. forum::für::umläute. IEM. zmoelnig@iem.at
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
-----------------------------------------------------------------*/
#ifndef _INCLUDE__GEM_UTILS_PIXPETE_H_
#define _INCLUDE__GEM_UTILS_PIXPETE_H_
#include <stdlib.h>
// utility functions from PeteHelpers.h
#ifndef _MSC_VER
# include <stdint.h>
typedef uint32_t U32;
typedef uint16_t U16;
typedef uint8_t U8;
#else
typedef unsigned long U32;
typedef unsigned short U16;
typedef unsigned char U8;
#endif
/* is this only on my system ?
i thought Gem's YUV is UYVY and not YVYU
seems weird... (jmz)
*/
#ifdef __APPLE__
# define SHIFT_ALPHA (24)
# define SHIFT_RED (16)
# define SHIFT_GREEN (8)
# define SHIFT_BLUE (0)
# define SHIFT_U (24)
# define SHIFT_Y1 (16)
# define SHIFT_V (8)
# define SHIFT_Y2 (0)
#else
# define SHIFT_ALPHA (24)
# define SHIFT_RED (16)
# define SHIFT_GREEN (8)
# define SHIFT_BLUE (0)
# define SHIFT_U (0)
# define SHIFT_Y1 (8)
# define SHIFT_V (16)
# define SHIFT_Y2 (24)
#endif
const float Pete_Pi=3.141582f;
const float Pete_TwoPi=(2.0f*Pete_Pi);
const float Pete_HalfPi=(0.5f*Pete_Pi);
static inline void Pete_ZeroMemory(void* pMemory,int nCount) {
char* pCurrent=(char*)pMemory;
char* pEnd=(pCurrent+nCount);
// while (pCurrent<pEnd) *pCurrent=0;
// pCurrent+=1;
// }
while(pCurrent<pEnd)*pCurrent++=0;
// memset(pMemory,0,nCount);
}
typedef U32 PETE_PIXELDATA32;
#define SIZEOF_PETE_PIXELDATA32 (4)
typedef U32 PETE_PIXELDATA24;
#define SIZEOF_PETE_PIXELDATA24 (3)
typedef U16 PETE_PIXELDATA16;
#define SIZEOF_PETE_PIXELDATA16 (2)
static inline void Pete_CopyAndConvert24BitTo32Bit(PETE_PIXELDATA24* pSource,PETE_PIXELDATA32* pOutput,int nPixelCount) {
char* pSourceEnd=((char*)pSource)+(nPixelCount*SIZEOF_PETE_PIXELDATA24);
char* pCurrentSource=((char*)pSource);
char* pCurrentOutput=((char*)pOutput);
while (pCurrentSource<pSourceEnd) {
*((PETE_PIXELDATA32*)pCurrentOutput)=
*((PETE_PIXELDATA24*)pCurrentSource);
pCurrentSource+=SIZEOF_PETE_PIXELDATA24;
pCurrentOutput+=SIZEOF_PETE_PIXELDATA32;
}
}
static inline void Pete_CopyAndConvert32BitTo24Bit(PETE_PIXELDATA32* pSource,PETE_PIXELDATA24* pOutput,int nPixelCount) {
char* pSourceEnd=((char*)pSource)+(nPixelCount*SIZEOF_PETE_PIXELDATA32);
char* pCurrentSource=((char*)pSource);
char* pCurrentOutput=((char*)pOutput);
while (pCurrentSource<pSourceEnd) {
*((PETE_PIXELDATA24*)pCurrentOutput)=
*((PETE_PIXELDATA32*)pCurrentSource);
pCurrentSource+=SIZEOF_PETE_PIXELDATA32;
pCurrentOutput+=SIZEOF_PETE_PIXELDATA24;
}
}
static inline void Pete_InPlaceConvert24BitTo32Bit(PETE_PIXELDATA24* pBuffer,int nPixelCount) {
char* pBufferStart=(char*)pBuffer;
char* pBuffer32Current=(pBufferStart+((nPixelCount-1)*SIZEOF_PETE_PIXELDATA32));
char* pBuffer24Current=(pBufferStart+((nPixelCount-1)*SIZEOF_PETE_PIXELDATA24));
while (pBuffer32Current>=pBufferStart) {
*((PETE_PIXELDATA32*)pBuffer32Current)=
*((PETE_PIXELDATA24*)pBuffer24Current);
pBuffer32Current-=SIZEOF_PETE_PIXELDATA32;
pBuffer24Current-=SIZEOF_PETE_PIXELDATA24;
}
}
static inline void Pete_CopyAndConvert16Bit565To32Bit(PETE_PIXELDATA16* pSource,PETE_PIXELDATA32* pOutput,int nPixelCount) {
char* pSourceEnd=((char*)pSource)+(nPixelCount*SIZEOF_PETE_PIXELDATA16);
char* pCurrentSource=((char*)pSource);
char* pCurrentOutput=((char*)pOutput);
while (pCurrentSource<pSourceEnd) {
PETE_PIXELDATA16 SourceColour=
*((PETE_PIXELDATA16*)pCurrentSource);
const int nMaskedRed=(SourceColour>>11)&31;
const int nMaskedGreen=(SourceColour>>5)&63;
const int nMaskedBlue=(SourceColour>>0)&31;
const int nNormalizedRed=(nMaskedRed<<3)|(nMaskedRed>>2);
const int nNormalizedGreen=(nMaskedGreen<<2)|(nMaskedGreen>>4);
const int nNormalizedBlue=(nMaskedBlue<<3)|(nMaskedBlue>>2);
const PETE_PIXELDATA32 OutputColour=
(nNormalizedRed<<16)|
(nNormalizedGreen<<8)|
(nNormalizedBlue<<0);
*((PETE_PIXELDATA32*)pCurrentOutput)=OutputColour;
pCurrentSource+=SIZEOF_PETE_PIXELDATA16;
pCurrentOutput+=SIZEOF_PETE_PIXELDATA32;
}
}
static inline void Pete_CopyAndConvert32BitTo16Bit565(PETE_PIXELDATA32* pSource,PETE_PIXELDATA16* pOutput,int nPixelCount) {
char* pSourceEnd=((char*)pSource)+(nPixelCount*SIZEOF_PETE_PIXELDATA32);
char* pCurrentSource=((char*)pSource);
char* pCurrentOutput=((char*)pOutput);
while (pCurrentSource<pSourceEnd) {
PETE_PIXELDATA32 SourceColour=
*((PETE_PIXELDATA32*)pCurrentSource);
const int nSourceRed=(SourceColour>>16)&0xff;
const int nSourceGreen=(SourceColour>>8)&0xff;
const int nSourceBlue=(SourceColour>>0)&0xff;
const int nMaskedRed=(nSourceRed>>3);
const int nMaskedGreen=(nSourceGreen>>2);
const int nMaskedBlue=(nSourceBlue>>3);
PETE_PIXELDATA16 OutputColour=
(nMaskedRed<<11)|
(nMaskedGreen<<5)|
(nMaskedBlue<<0);
*((PETE_PIXELDATA16*)pCurrentOutput)=OutputColour;
pCurrentSource+=SIZEOF_PETE_PIXELDATA32;
pCurrentOutput+=SIZEOF_PETE_PIXELDATA16;
}
}
typedef void* SPete_MemHandle;
inline SPete_MemHandle Pete_NewHandle(int nBytesToAlloc) {
return malloc(nBytesToAlloc);
}
inline void Pete_FreeHandle(SPete_MemHandle InHandle) {
free(InHandle);
}
inline void* Pete_LockHandle(SPete_MemHandle InHandle) {
return InHandle;
}
inline void Pete_UnLockHandle(SPete_MemHandle InHandle) {
// do nothing
}
const int cnBiggestSignedInt=0x7fffffff;
inline int GetLuminance(const U32 inColour) {
const int nRed=(inColour&(0xff<<SHIFT_RED))>>16;
const int nGreen=(inColour&(0xff<<SHIFT_GREEN))>>8;
const int nBlue=(inColour&(0xff<<SHIFT_BLUE))>>0;
const int nLuminance =
((77 * nRed)+
(150* nGreen)+ // used to be 50 which is plain wrong
(29 * nBlue));
return nLuminance;
}
#endif /* _INCLUDE__GEM_UTILS_PIXPETE_H_ */
// end of PeteHelpers.h stuff
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