/* #ident "@(#)x11:contrib/clients/xloadimage/image.h 6.11 91/12/19 Labtam" */ /* image.h: * * portable image type declarations * * jim frost 10.02.89 * * Copyright 1989 Jim Frost. See included file "copyright.h" for complete * copyright information. */ #include "copyright.h" #include #if defined(SYSV) || defined(VMS) #include #ifndef index /* some SysV's do this for you */ #define index strchr #endif #ifndef rindex #define rindex strrchr #endif #ifndef HAS_MEMCPY #define HAS_MEMCPY #endif #else /* !SYSV && !VMS */ #include #endif /* !SYSV && !VMS */ #ifdef VMS #define R_OK 4 #define NO_UNCOMPRESS #endif #ifdef HAS_MEMCPY /* equate bcopy w/ memcpy and bzero w/ memset where appropriate. */ #ifndef bcopy #define bcopy(S,D,N) memcpy((char *)(D),(char *)(S),(N)) #endif #ifndef bzero #define bzero(P,N) memset((P),'\0',(N)) #endif #ifndef bfill #define bfill(P,N,C) memset((P),(C),(N)) #endif #else /* not HAS_MEMCPY */ void bfill(); #endif /* not HAS_MEMCPY */ #ifndef TRUE typedef int boolean; #define FALSE 0 #define TRUE (!FALSE) #endif typedef unsigned long Pixel; /* what X thinks a pixel is */ typedef unsigned short Intensity; /* what X thinks an RGB intensity is */ typedef unsigned char byte; /* byte type */ struct cache { byte *end; byte buf[BUFSIZ]; struct cache *next; boolean eof; }; typedef struct { unsigned int type; /* ZIO file type */ boolean nocache; /* TRUE if caching has been disabled */ FILE *stream; /* file input stream */ char *filename; /* filename */ struct cache *data; /* data cache */ struct cache *dataptr; /* ptr to current cache block */ byte *bufptr; /* ptr within current cache block */ byte *endptr; /* ptr to end of current cache block */ byte *auxb; /* non NULL if auxiliary buffer in use */ byte *oldbufptr; /* save bufptr here when aux buffer is in use */ byte *oldendptr; /* save endptr here when aux buffer is in use */ boolean eof; /* TRUE if we are at encountered EOF */ byte buf[BUFSIZ]; /* getc buffer when un-cached */ } ZFILE; #define ZSTANDARD 0 /* standard file */ #define ZPIPE 1 /* file is a pipe (ie uncompress) */ #define ZSTDIN 2 /* file is stdin */ typedef struct rgbmap { unsigned int size; /* size of RGB map */ unsigned int used; /* number of colors used in RGB map */ unsigned int compressed; /* image uses colormap fully */ Intensity *red; /* color values in X style */ Intensity *green; Intensity *blue; } RGBMap; /* image structure */ typedef struct { char *title; /* name of image */ unsigned int type; /* type of image */ RGBMap rgb; /* RGB map of image if IRGB type */ unsigned int width; /* width of image in pixels */ unsigned int height; /* height of image in pixels */ unsigned int depth; /* depth of image in bits if IRGB type */ unsigned int pixlen; /* length of pixel if IRGB type */ byte *data; /* data rounded to full byte for each row */ float gamma; /* gamma of display the image is adjusted for */ } Image; #define IBITMAP 0 /* image is a bitmap */ #define IRGB 1 /* image is RGB */ #define ITRUE 2 /* image is true color */ #define BITMAPP(IMAGE) ((IMAGE)->type == IBITMAP) #define RGBP(IMAGE) ((IMAGE)->type == IRGB) #define TRUEP(IMAGE) ((IMAGE)->type == ITRUE) #define TRUE_RED(PIXVAL) (((PIXVAL) & 0xff0000) >> 16) #define TRUE_GREEN(PIXVAL) (((PIXVAL) & 0xff00) >> 8) #define TRUE_BLUE(PIXVAL) ( (PIXVAL) & 0xff) #define RGB_TO_TRUE(R,G,B) \ ((((R) & 0xff00) << 8) | ((G) & 0xff00) | ((B) >> 8)) /* special case 1-byte transfers so they're inline */ #define memToVal(PTR,LEN) ( \ (LEN) == 1 ? (unsigned long)( *( (byte *)(PTR)) ) : \ (LEN) == 2 ? (unsigned long)((*( (byte *)(PTR)) )<< 8) \ + ( *(((byte *)(PTR))+1) ) : \ (LEN) == 3 ? (unsigned long)((*( (byte *)(PTR)) )<<16) \ + ((*(((byte *)(PTR))+1))<< 8) \ + ( *(((byte *)(PTR))+2) ) : \ (unsigned long)((*( (byte *)(PTR)) )<<24) \ + ((*(((byte *)(PTR))+1))<<16) \ + ((*(((byte *)(PTR))+2))<< 8) \ + ( *(((byte *)(PTR))+3) ) ) #define valToMem(VAL,PTR,LEN) ( \ (LEN) == 1 ? (*( (byte *)(PTR) ) = ( VAL ), (unsigned long)(VAL)) : \ (LEN) == 2 ? (*( (byte *)(PTR) ) = ((VAL)>> 8), \ *(((byte *)(PTR))+1) = ( VAL ), (unsigned long)(VAL)) : \ (LEN) == 3 ? (*( (byte *)(PTR) ) = ((VAL)>>16), \ *(((byte *)(PTR))+1) = ((VAL)>> 8), \ *(((byte *)(PTR))+2) = ( VAL ), (unsigned long)(VAL)) : \ (*( (byte *)(PTR) ) = ((VAL)>>24), \ *(((byte *)(PTR))+1) = ((VAL)>>16), \ *(((byte *)(PTR))+2) = ((VAL)>> 8), \ *(((byte *)(PTR))+3) = ( VAL ), (unsigned long)(VAL)) ) #define memToValLSB(PTR,LEN) ( \ (LEN) == 1 ? (unsigned long)( *( (byte *)(PTR)) ) : \ (LEN) == 2 ? (unsigned long)( *( (byte *)(PTR)) ) \ + ((*(((byte *)(PTR))+1))<< 8) : \ (LEN) == 3 ? (unsigned long)( *( (byte *)(PTR)) ) \ + ((*(((byte *)(PTR))+1))<< 8) \ + ((*(((byte *)(PTR))+2))<<16) : \ (unsigned long)( *( (byte *)(PTR)) ) \ + ((*(((byte *)(PTR))+1))<< 8) \ + ((*(((byte *)(PTR))+2))<<16) \ + ((*(((byte *)(PTR))+3))<<24) ) /* this is provided for orthagonality */ #define valToMemLSB(VAL,PTR,LEN) ( \ (LEN) == 1 ? (*( (byte *)(PTR) ) = ( VAL ), (unsigned long)(VAL)) : \ (LEN) == 2 ? (*( (byte *)(PTR) ) = ( VAL ), \ *(((byte *)(PTR))+1) = ((VAL)>> 8), (unsigned long)(VAL)) : \ (LEN) == 3 ? (*( (byte *)(PTR) ) = ( VAL ), \ *(((byte *)(PTR))+1) = ((VAL)>> 8), \ *(((byte *)(PTR))+2) = ((VAL)>>16), (unsigned long)(VAL)) : \ (*( (byte *)(PTR) ) = ( VAL ), \ *(((byte *)(PTR))+1) = ((VAL)>> 8), \ *(((byte *)(PTR))+2) = ((VAL)>>16), \ *(((byte *)(PTR))+3) = ((VAL)>>24), (unsigned long)(VAL)) ) /* SUPPRESS 558 */ /* function declarations */ Image *clip(); /* clip.c */ void brighten(); /* bright.c */ void equalize(); void gray(); Image *normalize(); void compress(); /* compress.c */ Image *dither(); /* dither.c */ void fill(); /* fill.c */ void fold(); /* fold.c */ Image *halftone(); /* halftone.c */ Image *loadImage(); /* imagetypes.c */ void identifyImage(); void goodImage(); Image *merge(); /* merge.c */ extern unsigned long DepthToColorsTable[]; /* new.c */ unsigned long colorsToDepth(); char *dupString(); Image *newBitImage(); Image *newRGBImage(); Image *newTrueImage(); void freeImage(); void freeImageData(); void newRGBMapData(); void freeRGBMapData(); byte *lcalloc(); byte *lmalloc(); void lfree(); #define depthToColors(n) DepthToColorsTable[((n) < 32 ? (n) : 32)] Image *reduce(); /* reduce.c */ Image *expand(); Image *rotate(); /* rotate.c */ Image *smooth(); /* smooth.c */ /* doMemToVal and doMemToValLSB used to be void type but some compilers * (particularly the 4.1.1 SunOS compiler) couldn't handle the * (void)(thing= value) conversion used in the macros. */ unsigned long doMemToVal(); /* value.c */ unsigned long doValToMem(); unsigned long doMemToValLSB(); unsigned long doValToMemLSB(); void flipBits(); ZFILE *zopen(); /* zio.c */ int zread(); void zunread(); char *zgets(); boolean zrewind(); void zclose(); void znocache(); void zreset(); int _zgetc(); boolean _zopen(); void _zreset(); boolean _zreopen(); #define zgetc(zf) (((zf)->bufptr < (zf)->endptr) ? *(zf)->bufptr++ : _zgetc(zf)) Image *zoom(); /* zoom.c */ /* this returns the (approximate) intensity of an RGB triple */ #define colorIntensity(R,G,B) \ (RedIntensity[(R) >> 8] + GreenIntensity[(G) >> 8] + BlueIntensity[(B) >> 8]) extern unsigned short RedIntensity[]; extern unsigned short GreenIntensity[]; extern unsigned short BlueIntensity[]; void gammacorrect();