/* 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 /* ANSI-C stuff */ #if defined(__STDC__) #if !defined(_ArgProto) #define _ArgProto(ARGS) ARGS #endif #include #else /* !__STDC__ */ #if !defined(const) /* "const" is an ANSI thing */ #define const #endif #if !defined(_ArgProto) #define _ArgProto(ARGS) () #endif #endif /* !__STDC__ */ /* handle strings stuff that varies between BSD and ANSI/SYSV */ #if defined(IS_BSD) && !defined(__STDC__) #include #if !defined(strchr) && !defined(index) #define strchr index #endif #if !defined(strrchr) && !defined(rindex) #define strrchr rindex #endif #if !defined(memcpy) && !defined(bcopy) #define memcpy(D,S,L) bcopy((char *)(S),(char *)(D),(L)) #endif #if !defined(memset) && !defined(bzero) /* #define memset(D,V,L) bzero(D,L) */ #endif #else /* !IS_BSD || __STDC__ */ #include #if !defined(index) && !defined(strchr) #define index strchr #endif #if !defined(rindex) && !defined(strrchr) #define rindex strrchr #endif #if !defined(bcopy) && !defined(memcpy) #define bcopy(S,D,L) memcpy((void *)(D),(void *)(S),(L)) #endif #if !defined(bzero) && !defined(memset) #define bzero(D,L) memset((void *)(D),0,(L)) #endif #endif /* !IS_BSD || __STDC__ */ #ifdef VMS #define R_OK 4 #define NO_UNCOMPRESS #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 */ /* filter/extension pair for user-defined filters */ struct filter { char *extension; /* extension to match */ char *filter; /* filter to invoke */ struct filter *next; }; struct cache { int len; char buf[BUFSIZ]; struct cache *next; }; typedef struct { unsigned int type; /* ZIO file type */ unsigned int 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 */ int bufptr; /* ptr within current cache block */ } 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 */ float gamma; /* gamma of display the image is adjusted for */ byte *data; /* data rounded to full byte for each row */ } Image; #define IBAD 0 /* invalid image (used when freeing) */ #define IBITMAP 1 /* image is a bitmap */ #define IRGB 2 /* image is RGB */ #define ITRUE 3 /* 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) \ (((unsigned int)((R) & 0xff00) << 8) | ((unsigned int)(G) & 0xff00) | \ ((unsigned int)(B) >> 8)) #ifdef NO_INLINE /* only inline 1-byte transfers. this is provided for systems whose C * compilers can't hash the complexity of the inlined functions. */ #define memToVal(PTR,LEN) ((LEN) == 1 ? (unsigned long)(*(PTR)) : \ doMemToVal(PTR,LEN)) #define memToValLSB(PTR,LEN) ((LEN) == 1 ? (unsigned long)(*(PTR)) : \ doMemToValLSB(PTR,LEN)) #define valToMem(VAL,PTR,LEN) ((LEN) == 1 ? \ (unsigned long)(*(PTR) = (byte)(VAL)) : \ doValToMem(VAL,PTR,LEN)) #define valToMemLSB(VAL,PTR,LEN) ((LEN) == 1 ? \ (unsigned long)(*(PTR) = (byte)(VAL)) : \ (int)doValToMemLSB(VAL,PTR,LEN)) #else /* !NO_INLINE */ /* inline these functions for speed. these only work for {len : 1,2,3,4}. */ #define memToVal(PTR,LEN) \ ((LEN) == 1 ? ((unsigned long)(*((byte *)PTR))) : \ ((LEN) == 3 ? ((unsigned long) \ (*(byte *)(PTR) << 16) | \ (*((byte *)(PTR) + 1) << 8) | \ (*((byte *)(PTR) + 2))) : \ ((LEN) == 2 ? ((unsigned long) \ (*(byte *)(PTR) << 8) | \ (*((byte *)(PTR) + 1))) : \ ((unsigned long)((*(byte *)(PTR) << 24) | \ (*((byte *)(PTR) + 1) << 16) | \ (*((byte *)(PTR) + 2) << 8) | \ (*((byte *)(PTR) + 3))))))) #define memToValLSB(PTR,LEN) \ ((LEN) == 1 ? ((unsigned long)(*(byte *)(PTR))) : \ ((LEN) == 3 ? ((unsigned long) \ (*(byte *)(PTR)) | \ (*((byte *)(PTR) + 1) << 8) | \ (*((byte *)(PTR) + 2) << 16)) : \ ((LEN) == 2 ? ((unsigned long) \ (*(byte *)(PTR)) | (*((byte *)(PTR) + 1) << 8)) : \ ((unsigned long)((*(byte *)(PTR)) | \ (*((byte *)(PTR) + 1) << 8) | \ (*((byte *)(PTR) + 2) << 16) | \ (*((byte *)(PTR) + 3) << 24)))))) #define valToMem(VAL,PTR,LEN) \ ((LEN) == 1 ? (*(byte *)(PTR) = ((unsigned int)(VAL) & 0xff)) : \ ((LEN) == 3 ? (((*(byte *)(PTR)) = ((unsigned int)(VAL) & 0xff0000) >> 16), \ ((*((byte *)(PTR) + 1)) = ((unsigned int)(VAL) & 0xff00) >> 8), \ ((*((byte *)(PTR) + 2)) = ((unsigned int)(VAL) & 0xff))) : \ ((LEN) == 2 ? (((*(byte *)(PTR)) = ((unsigned int)(VAL) & 0xff00) >> 8), \ ((*((byte *)(PTR) + 1)) = ((unsigned int)(VAL) & 0xff))) : \ (((*(byte *)(PTR)) = ((unsigned int)(VAL) & 0xff000000) >> 24), \ ((*((byte *)(PTR) + 1)) = ((unsigned int)(VAL) & 0xff0000) >> 16), \ ((*((byte *)(PTR) + 2)) = ((unsigned int)(VAL) & 0xff00) >> 8), \ ((*((byte *)(PTR) + 3)) = ((unsigned int)(VAL) & 0xff)))))) #define valToMemLSB(VAL,PTR,LEN) \ ((LEN) == 1 ? (*(byte *)(PTR) = ((unsigned int)(VAL) & 0xff)) : \ ((LEN) == 3 ? (((*(byte *)(PTR) + 2) = ((unsigned int)(VAL) & 0xff0000) >> 16), \ ((*((byte *)(PTR) + 1)) = ((unsigned int)(VAL) & 0xff00) >> 8), \ ((*(byte *)(PTR)) = ((unsigned int)(VAL) & 0xff))) : \ ((LEN) == 2 ? (((*((byte *)(PTR) + 1) = ((unsigned int)(VAL) & 0xff00) >> 8), \ ((*(byte *)(PTR)) = ((unsigned int)(VAL) & 0xff)))) : \ (((*((byte *)(PTR) + 3)) = ((unsigned int)(VAL) & 0xff000000) >> 24), \ ((*((byte *)(PTR) + 2)) = ((unsigned int)(VAL) & 0xff0000) >> 16), \ ((*((byte *)(PTR) + 1)) = ((unsigned int)(VAL) & 0xff00) >> 8), \ ((*(byte *)(PTR)) = ((unsigned int)(VAL) & 0xff)))))) #endif /* !NO_INLINE */ /* SUPPRESS 558 */ /* function declarations */ /* clip.c */ Image *clip _ArgProto((Image *image, unsigned int x, unsigned int y, unsigned int width, unsigned int height, unsigned int verbose)); /* bright.c */ void brighten _ArgProto((Image *image, unsigned int percent, unsigned int verbose)); void gammacorrect _ArgProto((Image *image, double disp_gam, unsigned int verbose)); void gray _ArgProto((Image *image, unsigned int verbose)); Image *normalize _ArgProto((Image *image, unsigned int verbose)); /* compress.c */ void compress _ArgProto((Image *image, unsigned int verbose)); /* dither.c */ Image *dither _ArgProto((Image *image, unsigned int verbose)); /* fill.c */ void fill _ArgProto((Image *image, unsigned int fx, unsigned int fy, unsigned int fw, unsigned int fh, Pixel pixval)); /* halftone.c */ Image *halftone _ArgProto((Image *image, unsigned int verbose)); /* imagetypes.c */ void goodImage _ArgProto((Image *image, char *where)); /* merge.c */ Image *merge _ArgProto((Image *dest, Image *src, int atx, int aty, unsigned int verbose)); Image *tile _ArgProto((Image *image, int x, int y, unsigned int width, unsigned int height, unsigned int verbose)); /* misc.c */ void memoryExhausted _ArgProto((void)); char *tail _ArgProto((char *)); void usage _ArgProto((void)); int errorHandler(); char *findstr _ArgProto((char *, char *)); /* new.c */ extern unsigned long DepthToColorsTable[]; unsigned long colorsToDepth(); char *dupString _ArgProto((char *s)); Image *newBitImage _ArgProto((unsigned int width, unsigned int height)); Image *newRGBImage _ArgProto((unsigned int width, unsigned int height, unsigned int depth)); Image *newTrueImage _ArgProto((unsigned int width, unsigned int height)); void freeImage _ArgProto((Image *image)); void freeImageData _ArgProto((Image *image)); void newRGBMapData _ArgProto((RGBMap *rgb, unsigned int size)); void freeRGBMapData _ArgProto((RGBMap *rgb)); byte *lcalloc _ArgProto((unsigned int size)); byte *lmalloc _ArgProto((unsigned int size)); void lfree _ArgProto((byte *area)); #define depthToColors(n) DepthToColorsTable[((n) < 32 ? (n) : 32)] /* reduce.c */ Image *reduce _ArgProto((Image *image, unsigned int n, unsigned int verbose)); Image *expand _ArgProto((Image *image)); Image *flatten _ArgProto((Image *image)); /* rotate.c */ Image *rotate _ArgProto((Image *image, unsigned int degrees, unsigned int verbose)); /* smooth.c */ Image *smooth _ArgProto((Image *image, int iterations, unsigned int verbose)); /* undither.c */ Image *undither _ArgProto((Image *oimage, unsigned int verbose)); /* 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. */ /* value.c */ unsigned long doMemToVal _ArgProto((byte *p, unsigned int len)); unsigned long doValToMem _ArgProto((unsigned long val, byte *p, unsigned int len)); unsigned long doMemToValLSB _ArgProto((byte *p, unsigned int len)); unsigned long doValToMemLSB _ArgProto((unsigned long val, byte *p, unsigned int len)); void flipBits _ArgProto((byte *p, unsigned int len)); /* zio.c */ ZFILE *zopen _ArgProto((char *name)); int zread _ArgProto((ZFILE *zf, byte *buf, unsigned int len)); int zgetc _ArgProto((ZFILE *zf)); char *zgets _ArgProto((byte *buf, unsigned int size, ZFILE *zf)); void zclose _ArgProto((ZFILE *zf)); void znocache _ArgProto((ZFILE *zf)); void zreset _ArgProto((char *filename)); /* zoom.c */ Image *zoom _ArgProto((Image *image, unsigned int x, unsigned int y, unsigned int verbose)); /* 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[]; #ifdef DEBUG extern int _Xdebug; #define debug(ARGS) if (_Xdebug) printf ARGS #else /* !DEBUG */ #define debug(ARGS) #endif /* !DEBUG */