/* pm.h - interface to format-independent part of libpbm. ** ** Copyright (C) 1988, 1989, 1991 by Jef Poskanzer. ** ** Permission to use, copy, modify, and distribute this software and its ** documentation for any purpose and without fee is hereby granted, provided ** that the above copyright notice appear in all copies and that both that ** copyright notice and this permission notice appear in supporting ** documentation. This software is provided "as is" without express or ** implied warranty. */ #ifndef PM_H_INCLUDED #define PM_H_INCLUDED #include #include #include #include #include #include #include #include #ifdef __cplusplus extern "C" { #endif #if 0 } /* to fake out automatic code indenters */ #endif /* Definitions to make Netpbm programs work with either ANSI C or C Classic. This is obsolete, as all compilers recognize the ANSI syntax now. We are slowly removing all the ARGS invocations from the programs (and replacing them with explicit ANSI syntax), but we have a lot of programs where we have removed ARGS from the definition but not the prototype, and we have discovered that the Sun compiler considers the resulting mismatch between definition and prototype to be an error. So we make ARGS create the ANSI syntax unconditionally to avoid having to fix all those mismatches. */ #if 0 #if __STDC__ #define ARGS(alist) alist #else /*__STDC__*/ #define ARGS(alist) () #define const #endif /*__STDC__*/ #endif #define ARGS(alist) alist /* PM_GNU_PRINTF_ATTR lets the GNU compiler check pm_message() and pm_error() calls to be sure the arguments match the format string, thus preventing runtime segmentation faults and incorrect messages. */ #ifdef __GNUC__ #define PM_GNU_PRINTF_ATTR(a,b) __attribute__ ((format (printf, a, b))) #else #define PM_GNU_PRINTF_ATTR(a,b) #endif /* PURE_FN_ATTR is the attribute you add to a function declaration that indicates it's a true function -- has no side effects and return value is not influenced by anything except its arguments. */ #ifdef __GNUC__ #define PURE_FN_ATTR __attribute__ ((const)) #else #define PURE_FN_ATTR #endif /* S_IRUSR is POSIX, defined in Some old BSD systems and Windows systems have S_IREAD instead. Most Unix today (2011) has both. In 2011, Android has S_IRUSR and not S_IREAD. Some Windows has _S_IREAD. We're ignoring S_IREAD now to see if anyone misses it. If there are still users that need it, we can handle it here. */ #if MSVCRT #define PM_S_IWUSR _S_IWRITE #define PM_S_IRUSR _S_IREAD #else #define PM_S_IWUSR S_IWUSR #define PM_S_IRUSR S_IRUSR #endif typedef struct { /* Coordinates of a pixel within an image. Row 0 is the top row. Column 0 is the left column. */ unsigned int row; unsigned int col; } pm_pixelcoord; extern int pm_plain_output; /* Output functions are to produce plain (as opposed to raw) format regardless of their 'plainformat' arguments. */ extern const char * pm_progname; void pm_init(const char * const progname, unsigned int const flags); void pm_proginit(int * const argcP, const char ** const argv); void pm_setMessage(int const newState, int * const oldStateP); int pm_getMessage(void); FILE * pm_tmpfile(void); int pm_tmpfile_fd(void); void pm_make_tmpfile(FILE ** const filePP, const char ** const filenameP); void pm_make_tmpfile_fd(int * const fdP, const char ** const filenameP); void pm_nextimage(FILE * const file, int * const eofP); /* Variable-sized arrays definitions. */ char** pm_allocarray (int const cols, int const rows, int const size ); void * pm_allocrow(unsigned int const cols, unsigned int const size); void pm_freearray (char ** const its, int const rows); void pm_freerow(void * const row); /* Obsolete -- use shhopt instead */ int pm_keymatch(const char * const str, const char * const keyword, int const minchars); int PURE_FN_ATTR pm_maxvaltobits(int const maxval); int PURE_FN_ATTR pm_bitstomaxval(int const bits); unsigned int PURE_FN_ATTR pm_lcm (unsigned int const x, unsigned int const y, unsigned int const z, unsigned int const limit); void pm_setjmpbuf(jmp_buf * const jmpbufP); void pm_setjmpbufsave(jmp_buf * const jmpbufP, jmp_buf ** const oldJmpbufPP); void pm_longjmp(void); void pm_fork(int * const iAmParentP, pid_t * const childPidP, const char ** const errorP); void pm_waitpid(pid_t const pid, int * const statusP, int const options, pid_t * const exitedPidP, const char ** const errorP); void pm_waitpidSimple(pid_t const pid); typedef void pm_usermessagefn(const char * msg); void pm_setusermessagefn(pm_usermessagefn * fn); typedef void pm_usererrormsgfn(const char * msg); void pm_setusererrormsgfn(pm_usererrormsgfn * fn); void PM_GNU_PRINTF_ATTR(1,2) pm_message (const char format[], ...); void PM_GNU_PRINTF_ATTR(1,2) pm_errormsg(const char format[], ...); void PM_GNU_PRINTF_ATTR(1,2) pm_error (const char reason[], ...); int pm_have_float_format(void); /* Obsolete - use shhopt and user's manual instead */ void pm_usage (const char usage[]); FILE* pm_openr (const char* const name); FILE* pm_openw (const char* const name); FILE * pm_openr_seekable(const char name[]); void pm_close (FILE* const f); void pm_closer (FILE* const f); void pm_closew (FILE* const f); void pm_readchar(FILE * const ifP, char * const cP); static __inline__ void pm_readcharu(FILE * const ifP, unsigned char * const cP) { pm_readchar(ifP, (char *) cP); } void pm_writechar(FILE * const ofP, char const c); static __inline__ void pm_writecharu(FILE * const ofP, unsigned char const c) { pm_writechar(ofP, (char) c); } int pm_readbigshort(FILE * const ifP, short * const sP); static __inline__ int pm_readbigshortu(FILE* const ifP, unsigned short * const sP) { return pm_readbigshort(ifP, (short *) sP); } int pm_writebigshort(FILE * const ofP, short const s); static __inline__ int pm_writebigshortu(FILE * const ofP, unsigned short const s) { return pm_writebigshort(ofP, (short) s); } int pm_readbiglong(FILE * const ifP, long * const lP); static __inline__ int pm_readbiglongu(FILE * const ifP, unsigned long * const lP) { return pm_readbiglong(ifP, (long *) lP); } int pm_readbiglong2(FILE * const ifP, int32_t * const lP); static __inline__ int pm_readbiglongu2(FILE * const ifP, uint32_t * const lP) { return pm_readbiglong2(ifP, (int32_t *) lP); } int pm_writebiglong(FILE * const ofP, long const l); static __inline__ int pm_writebiglongu(FILE * const ofP, unsigned long const l) { return pm_writebiglong(ofP, (long) l); } int pm_readlittleshort(FILE * const ifP, short * const sP); static __inline__ int pm_readlittleshortu(FILE * const ifP, unsigned short * const sP) { return pm_readlittleshort(ifP, (short *) sP); } int pm_writelittleshort(FILE * const ofP, short const s); static __inline__ int pm_writelittleshortu(FILE * const ofP, unsigned short const s) { return pm_writelittleshort(ofP, (short) s); } int pm_readlittlelong(FILE * const ifP, long * const lP); static __inline__ int pm_readlittlelongu(FILE * const ifP, unsigned long * const lP) { return pm_readlittlelong(ifP, (long *) lP); } int pm_readlittlelong2(FILE * const ifP, int32_t * const lP); static __inline__ int pm_readlittlelong2u(FILE * const ifP, uint32_t * const lP) { return pm_readlittlelong2(ifP, (int32_t *) lP); } int pm_writelittlelong(FILE * const ofP, long const l); static __inline__ int pm_writelittlelongu(FILE * const ofP, unsigned long const l) { return pm_writelittlelong(ofP, (long) l); } int pm_readmagicnumber(FILE * const ifP); char* pm_read_unknown_size(FILE * const ifP, long * const buf); void pm_getline(FILE * const ifP, char ** const bufferP, size_t * const bufferSzP, int * const eofP, size_t * const lineLenP); void pm_readfile(FILE * const fileP, const unsigned char ** const bytesP, size_t * const szP); void pm_writefile(FILE * const fileP, const unsigned char * const bytes, size_t const sz); short pm_bs_short(short const s); long pm_bs_long(long const l); int pm_is_seekable(FILE * const fileP); unsigned int pm_tell(FILE * const fileP); void pm_tell2(FILE * const fileP, void * const fileposP, unsigned int const fileposSize); void pm_seek2(FILE * const fileP, const pm_filepos * const fileposP, unsigned int const fileposSize); void pm_seek(FILE * const fileP, unsigned long const filepos); enum pm_check_code { PM_CHECK_OK, PM_CHECK_UNKNOWN_TYPE, PM_CHECK_TOO_LONG, PM_CHECK_UNCHECKABLE, PM_CHECK_TOO_SHORT }; enum pm_check_type { PM_CHECK_BASIC }; void pm_check(FILE * const file, enum pm_check_type const check_type, pm_filepos const need_raster_size, enum pm_check_code * const retval_p); void pm_drain(FILE * const fileP, unsigned int const limit, unsigned int * const bytesReadP); char * pm_arg0toprogname(const char arg0[]); unsigned int pm_randseed(void); unsigned int pm_parse_width(const char * const arg); unsigned int pm_parse_height(const char * const arg); unsigned int pm_parse_maxval(const char * const arg); #ifdef __cplusplus } #endif #endif