/* * picttoppm.c -- convert a MacIntosh PICT file to PPM format. * * Copyright 1989,1992,1993 George Phillips * * 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. * * George Phillips * Department of Computer Science * University of British Columbia * * * 2003-02: Handling for DirectBitsRgn opcode (0x9b) added by * kabe@sra-tohoku.co.jp. * * 2004-03-27: Several bugs fixed by Steve Summit, scs@eskimo.com. * * $Id$ */ #define _XOPEN_SOURCE #include #include #include #include #include #include "pm_c_util.h" #include "ppm.h" #include "pbmfont.h" #include "mallocvar.h" #include "nstring.h" static bool const dump = FALSE; /* * Typical byte, 2 byte and 4 byte integers. */ typedef unsigned char byte; typedef char signed_byte; /* XXX */ typedef unsigned short word; typedef unsigned long longword; /* * Data structures for QuickDraw (and hence PICT) stuff. */ struct Rect { word top; word left; word bottom; word right; }; struct pixMap { struct Rect Bounds; word version; word packType; longword packSize; longword hRes; longword vRes; word pixelType; word pixelSize; word cmpCount; word cmpSize; longword planeBytes; longword pmTable; longword pmReserved; }; struct RGBColor { word red; word green; word blue; }; struct Point { word x; word y; }; struct Pattern { byte pix[64]; }; typedef void (*transfer_func) (struct RGBColor* src, struct RGBColor* dst); static const char* stage; static struct Rect picFrame; static word* red; static word* green; static word* blue; static word rowlen; static word collen; static longword planelen; static int verbose; static int fullres; static int recognize_comment; static struct RGBColor black = { 0, 0, 0 }; static struct RGBColor white = { 0xffff, 0xffff, 0xffff }; /* various bits of drawing state */ static struct RGBColor foreground = { 0, 0, 0 }; static struct RGBColor background = { 0xffff, 0xffff, 0xffff }; static struct RGBColor op_color; static struct Pattern bkpat; static struct Pattern fillpat; static struct Rect clip_rect; static struct Rect cur_rect; static struct Point current; static struct Pattern pen_pat; static word pen_width; static word pen_height; static word pen_mode; static transfer_func pen_trf; static word text_font; static byte text_face; static word text_mode; static transfer_func text_trf; static word text_size; static struct font* tfont; /* state for magic printer comments */ static int ps_text; static byte ps_just; static byte ps_flip; static word ps_rotation; static byte ps_linespace; static int ps_cent_x; static int ps_cent_y; static int ps_cent_set; struct opdef { const char* name; int len; void (*impl) (int); const char* description; }; struct blit_info { struct Rect srcRect; struct Rect srcBounds; int srcwid; byte* srcplane; int pixSize; struct Rect dstRect; struct RGBColor * color_map; int mode; struct blit_info * next; }; static struct blit_info* blit_list = 0; static struct blit_info** last_bl = &blit_list; #define WORD_LEN (-1) /* * a table of the first 194(?) opcodes. The table is too empty. * * Probably could use an entry specifying if the opcode is valid in version * 1, etc. */ /* for reserved opcodes of known length */ #define res(length) \ { "reserved", (length), NULL, "reserved for Apple use" } /* for reserved opcodes of length determined by a function */ #define resf(skipfunction) \ { "reserved", NA, (skipfunction), "reserved for Apple use" } /* seems like RGB colors are 6 bytes, but Apple says they're variable */ /* I'll use 6 for now as I don't care that much. */ #define RGB_LEN (6) static FILE* ifp; static int align = 0; static byte read_byte(void) { int c; if ((c = fgetc(ifp)) == EOF) pm_error("EOF / read error while %s", stage); ++align; return c & 255; } static word read_word(void) { byte b; b = read_byte(); return (b << 8) | read_byte(); } static void read_point(struct Point * const p) { p->y = read_word(); p->x = read_word(); } static longword read_long(void) { word i; i = read_word(); return (i << 16) | read_word(); } static signed_byte read_signed_byte(void) { return (signed_byte)read_byte(); } static void read_short_point(struct Point * const p) { p->x = read_signed_byte(); p->y = read_signed_byte(); } static void skip(int const byteCount) { static byte buf[1024]; int n; align += byteCount; for (n = byteCount; n > 0; n -= 1024) if (fread(buf, n > 1024 ? 1024 : n, 1, ifp) != 1) pm_error("EOF / read error while %s", stage); } struct const_name { int value; const char* name; }; struct const_name const transfer_name[] = { { 0, "srcCopy" }, { 1, "srcOr" }, { 2, "srcXor" }, { 3, "srcBic" }, { 4, "notSrcCopy" }, { 5, "notSrcOr" }, { 6, "notSrcXor" }, { 7, "notSrcBic" }, { 32, "blend" }, { 33, "addPin" }, { 34, "addOver" }, { 35, "subPin" }, { 36, "transparent" }, { 37, "adMax" }, { 38, "subOver" }, { 39, "adMin" }, { -1, 0 } }; struct const_name font_name[] = { { 0, "systemFont" }, { 1, "applFont" }, { 2, "newYork" }, { 3, "geneva" }, { 4, "monaco" }, { 5, "venice" }, { 6, "london" }, { 7, "athens" }, { 8, "sanFran" }, { 9, "toronto" }, { 11, "cairo" }, { 12, "losAngeles" }, { 20, "times" }, { 21, "helvetica" }, { 22, "courier" }, { 23, "symbol" }, { 24, "taliesin" }, { -1, 0 } }; struct const_name ps_just_name[] = { { 0, "no" }, { 1, "left" }, { 2, "center" }, { 3, "right" }, { 4, "full" }, { -1, 0 } }; struct const_name ps_flip_name[] = { { 0, "no" }, { 1, "horizontal" }, { 2, "vertical" }, { -1, 0 } }; static const char* const_name(const struct const_name * const table, int const ct) { static char numbuf[32]; int i; for (i = 0; table[i].name; i++) if (table[i].value == ct) return table[i].name; sprintf(numbuf, "%d", ct); return numbuf; } static void picComment(word const type, int const length) { unsigned int remainingLength; switch (type) { case 150: if (verbose) pm_message("TextBegin"); if (length >= 6) { ps_just = read_byte(); ps_flip = read_byte(); ps_rotation = read_word(); ps_linespace = read_byte(); remainingLength = length - 5; if (recognize_comment) ps_text = 1; ps_cent_set = 0; if (verbose) { pm_message("%s justification, %s flip, %d degree rotation, " "%d/2 linespacing", const_name(ps_just_name, ps_just), const_name(ps_flip_name, ps_flip), ps_rotation, ps_linespace); } } else remainingLength = length; break; case 151: if (verbose) pm_message("TextEnd"); ps_text = 0; remainingLength = length; break; case 152: if (verbose) pm_message("StringBegin"); remainingLength = length; break; case 153: if (verbose) pm_message("StringEnd"); remainingLength = length; break; case 154: if (verbose) pm_message("TextCenter"); if (length < 8) remainingLength = length; else { ps_cent_y = read_word(); if (ps_cent_y > 32767) ps_cent_y -= 65536; skip(2); /* ignore fractional part */ ps_cent_x = read_word(); if (ps_cent_x > 32767) ps_cent_x -= 65536; skip(2); /* ignore fractional part */ remainingLength = length - 8; if (verbose) pm_message("offset %d %d", ps_cent_x, ps_cent_y); } break; case 155: if (verbose) pm_message("LineLayoutOff"); remainingLength = length; break; case 156: if (verbose) pm_message("LineLayoutOn"); remainingLength = length; break; case 160: if (verbose) pm_message("PolyBegin"); remainingLength = length; break; case 161: if (verbose) pm_message("PolyEnd"); remainingLength = length; break; case 163: if (verbose) pm_message("PolyIgnore"); remainingLength = length; break; case 164: if (verbose) pm_message("PolySmooth"); remainingLength = length; break; case 165: if (verbose) pm_message("picPlyClo"); remainingLength = length; break; case 180: if (verbose) pm_message("DashedLine"); remainingLength = length; break; case 181: if (verbose) pm_message("DashedStop"); remainingLength = length; break; case 182: if (verbose) pm_message("SetLineWidth"); remainingLength = length; break; case 190: if (verbose) pm_message("PostScriptBegin"); remainingLength = length; break; case 191: if (verbose) pm_message("PostScriptEnd"); remainingLength = length; break; case 192: if (verbose) pm_message("PostScriptHandle"); remainingLength = length; break; case 193: if (verbose) pm_message("PostScriptFile"); remainingLength = length; break; case 194: if (verbose) pm_message("TextIsPostScript"); remainingLength = length; break; case 195: if (verbose) pm_message("ResourcePS"); remainingLength = length; break; case 200: if (verbose) pm_message("RotateBegin"); remainingLength = length; break; case 201: if (verbose) pm_message("RotateEnd"); remainingLength = length; break; case 202: if (verbose) pm_message("RotateCenter"); remainingLength = length; break; case 210: if (verbose) pm_message("FormsPrinting"); remainingLength = length; break; case 211: if (verbose) pm_message("EndFormsPrinting"); remainingLength = length; break; default: if (verbose) pm_message("%d", type); remainingLength = length; break; } if (remainingLength > 0) skip(remainingLength); } static void ShortComment(int const version) { picComment(read_word(), 0); } static void LongComment(int const version) { word type; type = read_word(); picComment(type, read_word()); } static void skip_poly_or_region(int const version) { stage = "skipping polygon or region"; skip(read_word() - 2); } #define NA (0) #define FNT_BOLD (1) #define FNT_ITALIC (2) #define FNT_ULINE (4) #define FNT_OUTLINE (8) #define FNT_SHADOW (16) #define FNT_CONDENSE (32) #define FNT_EXTEND (64) /* Some font searching routines */ struct fontinfo { int font; int size; int style; char* filename; struct font* loaded; struct fontinfo* next; }; static struct fontinfo* fontlist = 0; static struct fontinfo** fontlist_ins = &fontlist; static int load_fontdir(const char * const dirfile) { FILE* fp; int n, nfont; char* arg[5], line[1024]; struct fontinfo* fontinfo; if (!(fp = fopen(dirfile, "rb"))) return -1; nfont = 0; while (fgets(line, 1024, fp)) { if ((n = mk_argvn(line, arg, 5)) == 0 || arg[0][0] == '#') continue; if (n != 4) continue; MALLOCVAR(fontinfo); if (fontinfo == NULL) pm_error("out of memory for font information"); MALLOCARRAY(fontinfo->filename, strlen(arg[3] + 1)); if (fontinfo->filename == NULL) pm_error("out of memory for font information file name"); fontinfo->font = atoi(arg[0]); fontinfo->size = atoi(arg[1]); fontinfo->style = atoi(arg[2]); strcpy(fontinfo->filename, arg[3]); fontinfo->loaded = 0; fontinfo->next = 0; *fontlist_ins = fontinfo; fontlist_ins = &fontinfo->next; nfont++; } return nfont; } static void read_rect(struct Rect * const r) { r->top = read_word(); r->left = read_word(); r->bottom = read_word(); r->right = read_word(); } static void dump_rect(const char * const s, struct Rect * const r) { pm_message("%s (%d,%d) (%d,%d)", s, r->left, r->top, r->right, r->bottom); } static int rectwidth(const struct Rect * const r) { return r->right - r->left; } static int rectheight(const struct Rect * const r) { return r->bottom - r->top; } static bool rectsamesize(const struct Rect * const r1, const struct Rect * const r2) { return r1->right - r1->left == r2->right - r2->left && r1->bottom - r1->top == r2->bottom - r2->top ; } static void rectinter(struct Rect * const r1, struct Rect * const r2, struct Rect * const r3) { r3->left = MAX(r1->left, r2->left); r3->top = MAX(r1->top, r2->top); r3->right = MIN(r1->right, r2->right); r3->bottom = MIN(r1->bottom, r2->bottom); } static void rectscale(struct Rect * const r, double const xscale, double const yscale) { r->left *= xscale; r->right *= xscale; r->top *= yscale; r->bottom *= yscale; } static struct blit_info* add_blit_list(void) { struct blit_info* bi; MALLOCVAR(bi); if (bi == NULL) pm_error("out of memory for blit list"); bi->next = 0; *last_bl = bi; last_bl = &(bi->next); return bi; } /* Various transfer functions for blits. * * Note src[Not]{Or,Xor,Copy} only work if the source pixmap was originally * a bitmap. * There's also a small bug that the foreground and background colors * are not used in a srcCopy; this wouldn't be hard to fix. * It IS a problem since the foreground and background colors CAN be changed. */ #define rgb_all_same(x, y) \ ((x)->red == (y) && (x)->green == (y) && (x)->blue == (y)) #define rgb_is_white(x) rgb_all_same((x), 0xffff) #define rgb_is_black(x) rgb_all_same((x), 0) static void srcCopy(struct RGBColor * const src, struct RGBColor * const dst) { if (rgb_is_black(src)) *dst = foreground; else *dst = background; } static void srcOr(struct RGBColor * const src, struct RGBColor * const dst) { if (rgb_is_black(src)) *dst = foreground; } static void srcXor(struct RGBColor * const src, struct RGBColor * const dst) { dst->red ^= ~src->red; dst->green ^= ~src->green; dst->blue ^= ~src->blue; } static void srcBic(struct RGBColor * const src, struct RGBColor * const dst) { if (rgb_is_black(src)) *dst = background; } static void notSrcCopy(struct RGBColor * const src, struct RGBColor * const dst) { if (rgb_is_white(src)) *dst = foreground; else if (rgb_is_black(src)) *dst = background; } static void notSrcOr(struct RGBColor * const src, struct RGBColor * const dst) { if (rgb_is_white(src)) *dst = foreground; } static void notSrcBic(struct RGBColor * const src, struct RGBColor * const dst) { if (rgb_is_white(src)) *dst = background; } static void notSrcXor(struct RGBColor * const src, struct RGBColor * const dst) { dst->red ^= src->red; dst->green ^= src->green; dst->blue ^= src->blue; } static void addOver(struct RGBColor * const src, struct RGBColor * const dst) { dst->red += src->red; dst->green += src->green; dst->blue += src->blue; } static void addPin(struct RGBColor * const src, struct RGBColor * const dst) { if ((long)dst->red + (long)src->red > (long)op_color.red) dst->red = op_color.red; else dst->red = dst->red + src->red; if ((long)dst->green + (long)src->green > (long)op_color.green) dst->green = op_color.green; else dst->green = dst->green + src->green; if ((long)dst->blue + (long)src->blue > (long)op_color.blue) dst->blue = op_color.blue; else dst->blue = dst->blue + src->blue; } static void subOver(struct RGBColor * const src, struct RGBColor * const dst) { dst->red -= src->red; dst->green -= src->green; dst->blue -= src->blue; } /* or maybe its src - dst; my copy of Inside Mac is unclear */ static void subPin(struct RGBColor * const src, struct RGBColor * const dst) { if ((long)dst->red - (long)src->red < (long)op_color.red) dst->red = op_color.red; else dst->red = dst->red - src->red; if ((long)dst->green - (long)src->green < (long)op_color.green) dst->green = op_color.green; else dst->green = dst->green - src->green; if ((long)dst->blue - (long)src->blue < (long)op_color.blue) dst->blue = op_color.blue; else dst->blue = dst->blue - src->blue; } static void adMax(struct RGBColor * const src, struct RGBColor * const dst) { if (src->red > dst->red) dst->red = src->red; if (src->green > dst->green) dst->green = src->green; if (src->blue > dst->blue) dst->blue = src->blue; } static void adMin(struct RGBColor * const src, struct RGBColor * const dst) { if (src->red < dst->red) dst->red = src->red; if (src->green < dst->green) dst->green = src->green; if (src->blue < dst->blue) dst->blue = src->blue; } static void blend(struct RGBColor * const src, struct RGBColor * const dst) { #define blend_component(cmp) \ ((long)src->cmp * (long)op_color.cmp) / 65536 + \ ((long)dst->cmp * (long)(65536 - op_color.cmp) / 65536) dst->red = blend_component(red); dst->green = blend_component(green); dst->blue = blend_component(blue); } static void transparent(struct RGBColor * const src, struct RGBColor * const dst) { if (src->red != background.red || src->green != background.green || src->blue != background.blue) { *dst = *src; } } static transfer_func transfer(int const mode) { switch (mode) { case 0: return srcCopy; case 1: return srcOr; case 2: return srcXor; case 3: return srcBic; case 4: return notSrcCopy; case 5: return notSrcOr; case 6: return notSrcXor; case 7: return notSrcBic; case 32: return blend; case 33: return addPin; case 34: return addOver; case 35: return subPin; case 36: return transparent; case 37: return adMax; case 38: return subOver; case 39: return adMin; default: if (mode != 0) pm_message("no transfer function for code %s, using srcCopy", const_name(transfer_name, mode)); return srcCopy; } } #ifdef VMS unlink(p) char *p; {delete(p);} #endif static void doDiffSize(struct Rect const clipsrc, struct Rect const clipdst, int const pixSize, int const xsize, int const ysize, struct RGBColor * const ctArg, int const srcaddArg, int const dstadd, int const srcwid, transfer_func const trf, struct RGBColor * const color_map, byte * const srcArg, word * const reddstArg, word * const greendstArg, word * const bluedstArg ) { FILE * pnmscalePipeP; const char * command; byte * redsrc; byte * greensrc; byte * bluesrc; int greenpix; FILE * scaled; int cols, rows, format; pixval maxval; pixel * row; pixel * rowp; FILE * tempFileP; const char * tempFilename; struct RGBColor * ct; byte * src; int srcadd; word * reddst; word * greendst; word * bluedst; struct RGBColor src_c; struct RGBColor dst_c; ct = ctArg; /* initial value */ src = srcArg; /* initial value */ srcadd = srcaddArg; /* intial value */ reddst = reddstArg; greendst = greendstArg; bluedst = bluedstArg; pm_make_tmpfile(&tempFileP, &tempFilename); pm_close(tempFileP); asprintfN(&command, "pnmscale -xsize %d -ysize %d > %s", rectwidth(&clipdst), rectheight(&clipdst), tempFilename); pm_message("running command '%s'", command); pnmscalePipeP = popen(command, "w"); if (pnmscalePipeP == NULL) pm_error("cannot execute command '%s' popen() errno = %s (%d)", command, strerror(errno), errno); strfree(command); fprintf(pnmscalePipeP, "P6\n%d %d\n%d\n", rectwidth(&clipsrc), rectheight(&clipsrc), PPM_MAXMAXVAL); #define REDEPTH(c, oldmax) ((c) * ((PPM_MAXMAXVAL) + 1) / (oldmax + 1)) switch (pixSize) { case 8: { unsigned int i; for (i = 0; i < ysize; ++i) { unsigned int j; for (j = 0; j < xsize; ++j) { ct = color_map + *src++; fputc(REDEPTH(ct->red, 65535L), pnmscalePipeP); fputc(REDEPTH(ct->green, 65535L), pnmscalePipeP); fputc(REDEPTH(ct->blue, 65535L), pnmscalePipeP); } src += srcadd; } } break; case 16: { unsigned int i; for (i = 0; i < ysize; ++i) { unsigned int j; for (j = 0; j < xsize; ++j) { fputc(REDEPTH((*src & 0x7c) >> 2, 32), pnmscalePipeP); greenpix = (*src++ & 3) << 3; greenpix |= (*src & 0xe0) >> 5; fputc(REDEPTH(greenpix, 32), pnmscalePipeP); fputc(REDEPTH((*src++ & 0x1f) << 11, 32), pnmscalePipeP); } src += srcadd; } } break; case 32: { unsigned int i; srcadd = srcwid - xsize; redsrc = src; greensrc = src + (srcwid / 3); bluesrc = greensrc + (srcwid / 3); for (i = 0; i < ysize; ++i) { unsigned int j; for (j = 0; j < xsize; ++j) { fputc(REDEPTH(*redsrc++, 256), pnmscalePipeP); fputc(REDEPTH(*greensrc++, 256), pnmscalePipeP); fputc(REDEPTH(*bluesrc++, 256), pnmscalePipeP); } redsrc += srcadd; greensrc += srcadd; bluesrc += srcadd; } } break; } if (pclose(pnmscalePipeP)) { pm_error("pnmscale failed. pclose() returned Errno %s (%d)", strerror(errno), errno); } ppm_readppminit(scaled = pm_openr(tempFilename), &cols, &rows, &maxval, &format); row = ppm_allocrow(cols); /* couldn't hurt to assert cols, rows and maxval... */ if (trf == 0) { while (rows-- > 0) { unsigned int i; ppm_readppmrow(scaled, row, cols, maxval, format); for (i = 0, rowp = row; i < cols; ++i, ++rowp) { *reddst++ = PPM_GETR(*rowp) * 65536L / (maxval + 1); *greendst++ = PPM_GETG(*rowp) * 65536L / (maxval + 1); *bluedst++ = PPM_GETB(*rowp) * 65536L / (maxval + 1); } reddst += dstadd; greendst += dstadd; bluedst += dstadd; } } else { while (rows-- > 0) { unsigned int i; ppm_readppmrow(scaled, row, cols, maxval, format); for (i = 0, rowp = row; i < cols; i++, rowp++) { dst_c.red = *reddst; dst_c.green = *greendst; dst_c.blue = *bluedst; src_c.red = PPM_GETR(*rowp) * 65536L / (maxval + 1); src_c.green = PPM_GETG(*rowp) * 65536L / (maxval + 1); src_c.blue = PPM_GETB(*rowp) * 65536L / (maxval + 1); (*trf)(&src_c, &dst_c); *reddst++ = dst_c.red; *greendst++ = dst_c.green; *bluedst++ = dst_c.blue; } reddst += dstadd; greendst += dstadd; bluedst += dstadd; } } pm_close(scaled); ppm_freerow(row); strfree(tempFilename); unlink(tempFilename); } static int blit(struct Rect * const srcRect, struct Rect * const srcBounds, int const srcwid, byte * const srcplane, int const pixSize, struct Rect * const dstRect, struct Rect * const dstBounds, int const dstwid, struct RGBColor * const color_map, int const mode) { /* I can't tell what the result value of this function is supposed to mean, but I found several return statements that did not set it to anything, and several calls that examine it. I'm guessing that "1" is the appropriate thing to return in those cases, so I made it so. -Bryan 00.03.02 */ struct Rect clipsrc; struct Rect clipdst; register byte* src; register word* reddst; register word* greendst; register word* bluedst; register int i; register int j; int dstoff; int xsize; int ysize; int srcadd; int dstadd; struct RGBColor* ct; int pkpixsize; struct blit_info* bi; struct RGBColor src_c, dst_c; transfer_func trf; if (ps_text) return(1); /* almost got it. clip source rect with source bounds. * clip dest rect with dest bounds. if source and * destination are not the same size, use pnmscale * to get a nicely sized rectangle. */ rectinter(srcBounds, srcRect, &clipsrc); rectinter(dstBounds, dstRect, &clipdst); if (fullres) { bi = add_blit_list(); bi->srcRect = clipsrc; bi->srcBounds = *srcBounds; bi->srcwid = srcwid; bi->srcplane = srcplane; bi->pixSize = pixSize; bi->dstRect = clipdst; bi->color_map = color_map; bi->mode = mode; return(0); } if (verbose) { dump_rect("copying from:", &clipsrc); dump_rect("to: ", &clipdst); pm_message("a %d x %d area to a %d x %d area", rectwidth(&clipsrc), rectheight(&clipsrc), rectwidth(&clipdst), rectheight(&clipdst)); } pkpixsize = 1; if (pixSize == 16) pkpixsize = 2; src = srcplane + (clipsrc.top - srcBounds->top) * srcwid + (clipsrc.left - srcBounds->left) * pkpixsize; xsize = clipsrc.right - clipsrc.left; ysize = clipsrc.bottom - clipsrc.top; srcadd = srcwid - xsize * pkpixsize; dstoff = (clipdst.top - dstBounds->top) * dstwid + (clipdst.left - dstBounds->left); reddst = red + dstoff; greendst = green + dstoff; bluedst = blue + dstoff; dstadd = dstwid - (clipdst.right - clipdst.left); /* get rid of Text mask mode bit, if (erroneously) set */ if ((mode & ~64) == 0) trf = 0; /* optimized srcCopy */ else trf = transfer(mode & ~64); if (!rectsamesize(&clipsrc, &clipdst)) { doDiffSize(clipsrc, clipdst, pixSize, xsize, ysize, ct, srcadd, dstadd, srcwid, trf, color_map, src, reddst, greendst, bluedst); return 1; } if (trf == 0) { /* optimized srcCopy blit ('cause it was implemented first) */ switch (pixSize) { case 8: for (i = 0; i < ysize; ++i) { for (j = 0; j < xsize; ++j) { ct = color_map + *src++; *reddst++ = ct->red; *greendst++ = ct->green; *bluedst++ = ct->blue; } src += srcadd; reddst += dstadd; greendst += dstadd; bluedst += dstadd; } break; case 16: for (i = 0; i < ysize; ++i) { for (j = 0; j < xsize; ++j) { *reddst++ = (*src & 0x7c) << 9; *greendst = (*src++ & 3) << 14; *greendst++ |= (*src & 0xe0) << 6; *bluedst++ = (*src++ & 0x1f) << 11; } src += srcadd; reddst += dstadd; greendst += dstadd; bluedst += dstadd; } break; case 32: srcadd = (srcwid / 3) - xsize; for (i = 0; i < ysize; ++i) { for (j = 0; j < xsize; ++j) *reddst++ = *src++ << 8; reddst += dstadd; src += srcadd; for (j = 0; j < xsize; ++j) *greendst++ = *src++ << 8; greendst += dstadd; src += srcadd; for (j = 0; j < xsize; ++j) *bluedst++ = *src++ << 8; bluedst += dstadd; src += srcadd; } } } else { #define grab_destination() \ dst_c.red = *reddst; \ dst_c.green = *greendst; \ dst_c.blue = *bluedst #define put_destination() \ *reddst++ = dst_c.red; \ *greendst++ = dst_c.green; \ *bluedst++ = dst_c.blue /* generalized (but slow) blit */ switch (pixSize) { case 8: for (i = 0; i < ysize; ++i) { for (j = 0; j < xsize; ++j) { grab_destination(); (*trf)(color_map + *src++, &dst_c); put_destination(); } src += srcadd; reddst += dstadd; greendst += dstadd; bluedst += dstadd; } break; case 16: for (i = 0; i < ysize; ++i) { for (j = 0; j < xsize; ++j) { grab_destination(); src_c.red = (*src & 0x7c) << 9; src_c.green = (*src++ & 3) << 14; src_c.green |= (*src & 0xe0) << 6; src_c.blue = (*src++ & 0x1f) << 11; (*trf)(&src_c, &dst_c); put_destination(); } src += srcadd; reddst += dstadd; greendst += dstadd; bluedst += dstadd; } break; case 32: srcadd = srcwid / 3; for (i = 0; i < ysize; i++) { for (j = 0; j < xsize; j++) { grab_destination(); src_c.red = *src << 8; src_c.green = src[srcadd] << 8; src_c.blue = src[srcadd * 2] << 8; (*trf)(&src_c, &dst_c); put_destination(); src++; } src += srcwid - xsize; reddst += dstadd; greendst += dstadd; bluedst += dstadd; } } } return(1); } /* allocation is same for version 1 or version 2. We are super-duper * wasteful of memory for version 1 picts. Someday, we'll separate * things and only allocate a byte per pixel for version 1 (or heck, * even only a bit, but that would require even more extra work). */ static void alloc_planes(void) { rowlen = picFrame.right - picFrame.left; collen = picFrame.bottom - picFrame.top; clip_rect.top = picFrame.top; clip_rect.left = picFrame.left; clip_rect.bottom = picFrame.bottom; clip_rect.top = picFrame.top; planelen = rowlen * collen; MALLOCARRAY(red, planelen); MALLOCARRAY(green, planelen); MALLOCARRAY(blue, planelen); if (red == NULL || green == NULL || blue == NULL) pm_error("not enough memory to hold picture"); /* initialize background to white */ memset(red, 255, planelen * sizeof(word)); memset(green, 255, planelen * sizeof(word)); memset(blue, 255, planelen * sizeof(word)); } static void compact_plane(word * const plane, int const planelen) { unsigned int i; for (i = 0; i < planelen; ++i) plane[i] = (plane[i] >> 8) & 255; } static void do_blits(void) { struct blit_info* bi; int srcwidth, dstwidth, srcheight, dstheight; double scale, scalelow, scalehigh; double xscale = 1.0; double yscale = 1.0; double lowxscale, highxscale, lowyscale, highyscale; int xscalecalc = 0, yscalecalc = 0; if (!blit_list) return; fullres = 0; for (bi = blit_list; bi; bi = bi->next) { srcwidth = rectwidth(&bi->srcRect); dstwidth = rectwidth(&bi->dstRect); srcheight = rectheight(&bi->srcRect); dstheight = rectheight(&bi->dstRect); if (srcwidth > dstwidth) { scalelow = (double)(srcwidth ) / (double)dstwidth; scalehigh = (double)(srcwidth + 1.0) / (double)dstwidth; switch (xscalecalc) { case 0: lowxscale = scalelow; highxscale = scalehigh; xscalecalc = 1; break; case 1: if (scalelow < highxscale && scalehigh > lowxscale) { if (scalelow > lowxscale) lowxscale = scalelow; if (scalehigh < highxscale) highxscale = scalehigh; } else { scale = (lowxscale + highxscale) / 2.0; xscale = (double)srcwidth / (double)dstwidth; if (scale > xscale) xscale = scale; xscalecalc = 2; } break; case 2: scale = (double)srcwidth / (double)dstwidth; if (scale > xscale) xscale = scale; break; } } if (srcheight > dstheight) { scalelow = (double)(srcheight ) / (double)dstheight; scalehigh = (double)(srcheight + 1.0) / (double)dstheight; switch (yscalecalc) { case 0: lowyscale = scalelow; highyscale = scalehigh; yscalecalc = 1; break; case 1: if (scalelow < highyscale && scalehigh > lowyscale) { if (scalelow > lowyscale) lowyscale = scalelow; if (scalehigh < highyscale) highyscale = scalehigh; } else { scale = (lowyscale + highyscale) / 2.0; yscale = (double)srcheight / (double)dstheight; if (scale > yscale) yscale = scale; yscalecalc = 2; } break; case 2: scale = (double)srcheight / (double)dstheight; if (scale > yscale) yscale = scale; break; } } } if (xscalecalc == 1) { if (1.0 >= lowxscale && 1.0 <= highxscale) xscale = 1.0; else xscale = lowxscale; } if (yscalecalc == 1) { if (1.0 >= lowyscale && 1.0 <= lowyscale) yscale = 1.0; else yscale = lowyscale; } if (xscale != 1.0 || yscale != 1.0) { for (bi = blit_list; bi; bi = bi->next) rectscale(&bi->dstRect, xscale, yscale); pm_message("Scaling output by %f in X and %f in Y", xscale, yscale); rectscale(&picFrame, xscale, yscale); } alloc_planes(); for (bi = blit_list; bi; bi = bi->next) { blit(&bi->srcRect, &bi->srcBounds, bi->srcwid, bi->srcplane, bi->pixSize, &bi->dstRect, &picFrame, rowlen, bi->color_map, bi->mode); } } static void output_ppm(word red[], word grn[], word blu[]) { int width; int height; pixel* pixelrow; int row; if (fullres) do_blits(); stage = "writing PPM"; width = picFrame.right - picFrame.left; height = picFrame.bottom - picFrame.top; compact_plane(red, width * height); compact_plane(grn, width * height); compact_plane(blu, width * height); ppm_writeppminit(stdout, width, height, PPM_MAXMAXVAL, 0 ); pixelrow = ppm_allocrow(width); for (row = 0; row < height; ++row) { unsigned int col; for (col = 0; col < width; ++col) PPM_ASSIGN(pixelrow[col], *red++, *grn++, *blu++); ppm_writeppmrow(stdout, pixelrow, width, PPM_MAXMAXVAL, 0 ); } pm_close(stdout); } /* * All data in version 2 is 2-byte word aligned. Odd size data * is padded with a null. */ static word get_op(int const version) { if ((align & 1) && version == 2) { stage = "aligning for opcode"; read_byte(); } stage = "reading opcode"; if (version == 1) return read_byte(); else return read_word(); } static void Clip(int const version) { word len; len = read_word(); if (len == 0x000a) { /* null rgn */ read_rect(&clip_rect); /* XXX should clip this by picFrame */ if (verbose) dump_rect("clipping to", &clip_rect); } else skip(len - 2); } static void OpColor(int const version) { op_color.red = read_word(); op_color.green = read_word(); op_color.blue = read_word(); } static void read_pixmap(struct pixMap * const p, word * const rowBytes) { stage = "getting pixMap header"; if (rowBytes != NULL) *rowBytes = read_word(); read_rect(&p->Bounds); p->version = read_word(); p->packType = read_word(); p->packSize = read_long(); p->hRes = read_long(); p->vRes = read_long(); p->pixelType = read_word(); p->pixelSize = read_word(); p->cmpCount = read_word(); p->cmpSize = read_word(); p->planeBytes = read_long(); p->pmTable = read_long(); p->pmReserved = read_long(); if (verbose) { pm_message("pixelType: %d", p->pixelType); pm_message("pixelSize: %d", p->pixelSize); pm_message("cmpCount: %d", p->cmpCount); pm_message("cmpSize: %d", p->cmpSize); } if (p->pixelType != 0) pm_error("sorry, I only do chunky format"); if (p->cmpCount != 1) pm_error("sorry, cmpCount != 1"); if (p->pixelSize != p->cmpSize) pm_error("oops, pixelSize != cmpSize"); } static struct RGBColor* read_color_table(void) { longword ctSeed; word ctFlags; word ctSize; word val; int i; struct RGBColor* color_table; stage = "getting color table info"; ctSeed = read_long(); ctFlags = read_word(); ctSize = read_word(); if (verbose) { pm_message("ctSeed: %ld", ctSeed); pm_message("ctFlags: %d", ctFlags); pm_message("ctSize: %d", ctSize); } stage = "reading color table"; MALLOCARRAY(color_table, ctSize + 1); if (color_table == NULL) pm_error("no memory for color table"); for (i = 0; i <= ctSize; i++) { val = read_word(); /* The indicies in a device color table are bogus and usually == 0. * so I assume we allocate up the list of colors in order. */ if (ctFlags & 0x8000) val = i; if (val > ctSize) pm_error("pixel value greater than color table size"); color_table[val].red = read_word(); color_table[val].green = read_word(); color_table[val].blue = read_word(); if (verbose > 1) pm_message("%d: [%d,%d,%d]", val, color_table[val].red, color_table[val].green, color_table[val].blue); } return color_table; } static void read_n(int const n, char * const buf) { align += n; if (fread(buf, n, 1, ifp) != 1) pm_error("EOF / read error while %s", stage); } static byte* expand_buf(byte * const buf, int * const len, int const bits_per_pixel) { static byte pixbuf[256 * 8]; register byte* src; register byte* dst; register int i; src = buf; dst = pixbuf; switch (bits_per_pixel) { case 8: case 16: case 32: return buf; case 4: assert(*len * 2 <= sizeof(pixbuf)); for (i = 0; i < *len; i++) { *dst++ = (*src >> 4) & 15; *dst++ = *src++ & 15; } *len *= 2; break; case 2: assert(*len * 4 <= sizeof(pixbuf)); for (i = 0; i < *len; i++) { *dst++ = (*src >> 6) & 3; *dst++ = (*src >> 4) & 3; *dst++ = (*src >> 2) & 3; *dst++ = *src++ & 3; } *len *= 4; break; case 1: assert(*len * 8 <= sizeof(pixbuf)); for (i = 0; i < *len; i++) { *dst++ = (*src >> 7) & 1; *dst++ = (*src >> 6) & 1; *dst++ = (*src >> 5) & 1; *dst++ = (*src >> 4) & 1; *dst++ = (*src >> 3) & 1; *dst++ = (*src >> 2) & 1; *dst++ = (*src >> 1) & 1; *dst++ = *src++ & 1; } *len *= 8; break; default: pm_error("bad bits per pixel in expand_buf"); } return pixbuf; } static byte* unpackbits(struct Rect* const bounds, word const rowBytesArg, int const pixelSize) { byte* linebuf; byte* pm; byte* pm_ptr; register int i,j,k,l; word pixwidth; int llsize = 1; int linelen; int uselen; int len; byte* bytepixels; int buflen; int pkpixsize; int rowsize; word rowBytes; if (pixelSize <= 8) rowBytes = rowBytesArg & 0x7fff; else rowBytes = rowBytesArg; if (rowBytes == 0) rowBytes = pixwidth; stage = "unpacking packbits"; pixwidth = bounds->right - bounds->left; pkpixsize = 1; if (pixelSize == 16) { pkpixsize = 2; pixwidth *= 2; } else if (pixelSize == 32) pixwidth *= 3; if (verbose) pm_message("rowBytes = %d, pixelSize = %d", rowBytes, pixelSize); #ifdef OLD_WAY if (rowBytes > 250 || pixelSize > 8) llsize = 2; #endif #define TEMPORARY_JUST_MADE_THIS_UP #ifdef TEMPORARY_JUST_MADE_THIS_UP if (rowBytes > 200) llsize = 2; #endif rowsize = pixwidth; if (rowBytes < 8) rowsize = 8 * rowBytes; /* worst case expansion factor */ if (verbose) pm_message("pixwidth: %d", pixwidth); /* we're sloppy and allocate some extra space because we can overshoot * by as many as 8 bytes when we unpack the raster lines. Really, I * should be checking to see if we go over the scan line (it is * possible) and complain of a corrupt file. That fix is more complex * (and probably costly in CPU cycles) and will have to come later. */ MALLOCARRAY(pm, rowsize * (bounds->bottom - bounds->top) + 8); if (pm == NULL) pm_error("no mem for packbits rectangle"); /* Sometimes we get rows with length > rowBytes. I'll allocate some * extra for slop and only die if the size is _way_ out of wack. */ MALLOCARRAY(linebuf, rowBytes + 100); if (linebuf == NULL) pm_error("can't allocate memory for line buffer"); if (rowBytes < 8) { /* ah-ha! The bits aren't actually packed. This will be easy */ for (i = 0; i < bounds->bottom - bounds->top; i++) { pm_ptr = pm + i * pixwidth; read_n(buflen = rowBytes, (char*) linebuf); bytepixels = expand_buf(linebuf, &buflen, pixelSize); for (j = 0; j < buflen; j++) *pm_ptr++ = *bytepixels++; } } else { for (i = 0; i < bounds->bottom - bounds->top; i++) { pm_ptr = pm + i * pixwidth; if (llsize == 2) linelen = read_word(); else linelen = read_byte(); if (verbose > 1) pm_message("linelen: %d", linelen); uselen = linelen; if (linelen > rowBytes) { pm_message("linelen > rowbytes! (%d > %d) at line %d", linelen, rowBytes, i); uselen = rowBytes; } read_n(uselen, (char*) linebuf); if(uselen < linelen) skip(linelen - uselen); for (j = 0; j < uselen; ) { if (linebuf[j] & 0x80) { len = ((linebuf[j] ^ 255) & 255) + 2; buflen = pkpixsize; bytepixels = expand_buf(linebuf + j+1, &buflen, pixelSize); for (k = 0; k < len; k++) { for (l = 0; l < buflen; l++) *pm_ptr++ = *bytepixels++; bytepixels -= buflen; } j += 1 + pkpixsize; } else { len = (linebuf[j] & 255) + 1; buflen = len * pkpixsize; bytepixels = expand_buf(linebuf + j+1, &buflen, pixelSize); for (k = 0; k < buflen; k++) *pm_ptr++ = *bytepixels++; j += len * pkpixsize + 1; } } if (verbose > 1) pm_message("row %d: got %d", i, (int)(pm_ptr - (pm + i * pixwidth))); } } free(linebuf); return pm; } /* this just skips over a version 2 pattern. Probabaly will return * a pattern in the fabled complete version. */ static void read_pattern(void) { word PatType; word rowBytes; struct pixMap p; byte* pm; struct RGBColor* ct; stage = "Reading a pattern"; PatType = read_word(); switch (PatType) { case 2: skip(8); /* old pattern data */ skip(5); /* RGB for pattern */ break; case 1: skip(8); /* old pattern data */ read_pixmap(&p, &rowBytes); ct = read_color_table(); pm = unpackbits(&p.Bounds, rowBytes, p.pixelSize); free(pm); free(ct); break; default: pm_error("unknown pattern type in read_pattern"); } } /* these 3 do nothing but skip over their data! */ static void BkPixPat(int const version) { read_pattern(); } static void PnPixPat(int const version) { read_pattern(); } static void FillPixPat(int const version) { read_pattern(); } static void read_8x8_pattern(struct Pattern * const pat) { byte buf[8], *exp; int len, i; read_n(len = 8, (char*)buf); if (verbose) { pm_message("pattern: %02x%02x%02x%02x", buf[0], buf[1], buf[2], buf[3]); pm_message("pattern: %02x%02x%02x%02x", buf[4], buf[5], buf[6], buf[7]); } exp = expand_buf(buf, &len, 1); for (i = 0; i < 64; i++) pat->pix[i] = *exp++; } static void BkPat(int const version) { read_8x8_pattern(&bkpat); } static void PnPat(int const version) { read_8x8_pattern(&pen_pat); } static void FillPat(int const version) { read_8x8_pattern(&fillpat); } static void PnSize(int const version) { pen_height = read_word(); pen_width = read_word(); if (verbose) pm_message("pen size %d x %d", pen_width, pen_height); } static void PnMode(int const version) { pen_mode = read_word(); if (pen_mode >= 8 && pen_mode < 15) pen_mode -= 8; if (verbose) pm_message("pen transfer mode = %s", const_name(transfer_name, pen_mode)); pen_trf = transfer(pen_mode); } static void read_rgb(struct RGBColor * const rgb) { rgb->red = read_word(); rgb->green = read_word(); rgb->blue = read_word(); } static void RGBFgCol(int const v) { read_rgb(&foreground); if (verbose) pm_message("foreground now [%d,%d,%d]", foreground.red, foreground.green, foreground.blue); } static void RGBBkCol(int const v) { read_rgb(&background); if (verbose) pm_message("background now [%d,%d,%d]", background.red, background.green, background.blue); } #define PIXEL_INDEX(x,y) ((y) - picFrame.top) * rowlen + (x) - picFrame.left static void draw_pixel(int const x, int const y, struct RGBColor * const clr, transfer_func trf) { int i; struct RGBColor dst; if (x < clip_rect.left || x >= clip_rect.right || y < clip_rect.top || y >= clip_rect.bottom) { return; } i = PIXEL_INDEX(x, y); dst.red = red[i]; dst.green = green[i]; dst.blue = blue[i]; (*trf)(clr, &dst); red[i] = dst.red; green[i] = dst.green; blue[i] = dst.blue; } static void draw_pen_rect(struct Rect * const r) { int const rowadd = rowlen - (r->right - r->left); int i; int x, y; struct RGBColor dst; i = PIXEL_INDEX(r->left, r->top); /* initial value */ for (y = r->top; y < r->bottom; y++) { for (x = r->left; x < r->right; x++) { dst.red = red[i]; dst.green = green[i]; dst.blue = blue[i]; if (pen_pat.pix[(x & 7) + (y & 7) * 8]) (*pen_trf)(&black, &dst); else (*pen_trf)(&white, &dst); red[i] = dst.red; green[i] = dst.green; blue[i] = dst.blue; i++; } i += rowadd; } } static void draw_pen(int const x, int const y) { struct Rect penrect; penrect.left = x; penrect.right = x + pen_width; penrect.top = y; penrect.bottom = y + pen_height; rectinter(&penrect, &clip_rect, &penrect); draw_pen_rect(&penrect); } /* * Digital Line Drawing * by Paul Heckbert * from "Graphics Gems", Academic Press, 1990 */ /* * digline: draw digital line from (x1,y1) to (x2,y2), * calling a user-supplied procedure at each pixel. * Does no clipping. Uses Bresenham's algorithm. * * Paul Heckbert 3 Sep 85 */ static void scan_line(short const x1, short const y1, short const x2, short const y2) { int d, x, y, ax, ay, sx, sy, dx, dy; if (!(pen_width == 0 && pen_height == 0)) { dx = x2-x1; ax = ABS(dx)<<1; sx = SGN(dx); dy = y2-y1; ay = ABS(dy)<<1; sy = SGN(dy); x = x1; y = y1; if (ax>ay) { /* x dominant */ d = ay-(ax>>1); for (;;) { draw_pen(x, y); if (x==x2) return; if ((x > rowlen) && (sx > 0)) return; if (d>=0) { y += sy; d -= ax; } x += sx; d += ay; } } else { /* y dominant */ d = ax-(ay>>1); for (;;) { draw_pen(x, y); if (y==y2) return; if ((y > collen) && (sy > 0)) return; if (d>=0) { x += sx; d -= ay; } y += sy; d += ax; } } } } static void Line(int const v) { struct Point p1; read_point(&p1); read_point(¤t); if (verbose) pm_message("(%d,%d) to (%d, %d)", p1.x,p1.y,current.x,current.y); scan_line(p1.x,p1.y,current.x,current.y); } static void LineFrom(int const v) { struct Point p1; read_point(&p1); if (verbose) pm_message("(%d,%d) to (%d, %d)", current.x,current.y,p1.x,p1.y); if (!fullres) scan_line(current.x,current.y,p1.x,p1.y); current.x = p1.x; current.y = p1.y; } static void ShortLine(int const v) { struct Point p1; read_point(&p1); read_short_point(¤t); if (verbose) pm_message("(%d,%d) delta (%d, %d)", p1.x,p1.y,current.x,current.y); current.x += p1.x; current.y += p1.y; if (!fullres) scan_line(p1.x,p1.y,current.x,current.y); } static void ShortLineFrom(int const v) { struct Point p1; read_short_point(&p1); if (verbose) pm_message("(%d,%d) delta (%d, %d)", current.x,current.y,p1.x,p1.y); p1.x += current.x; p1.y += current.y; if (!fullres) scan_line(current.x,current.y,p1.x,p1.y); current.x = p1.x; current.y = p1.y; } static void do_paintRect(struct Rect * const prect) { struct Rect rect; if (fullres) return; if (verbose) dump_rect("painting", prect); rectinter(&clip_rect, prect, &rect); draw_pen_rect(&rect); } static void paintRect(int const v) { read_rect(&cur_rect); do_paintRect(&cur_rect); } static void paintSameRect(int const v) { do_paintRect(&cur_rect); } static void do_frameRect(struct Rect * const rect) { int x, y; if (fullres) return; if (verbose) dump_rect("framing", rect); if (pen_width == 0 || pen_height == 0) return; for (x = rect->left; x <= rect->right - pen_width; x += pen_width) { draw_pen(x, rect->top); draw_pen(x, rect->bottom - pen_height); } for (y = rect->top; y <= rect->bottom - pen_height ; y += pen_height) { draw_pen(rect->left, y); draw_pen(rect->right - pen_width, y); } } static void frameRect(int const v) { read_rect(&cur_rect); do_frameRect(&cur_rect); } static void frameSameRect(int const v) { do_frameRect(&cur_rect); } /* a stupid shell sort - I'm so embarassed */ static void poly_sort(int const sort_index, struct Point points[]) { int d, i, j, temp; /* initialize and set up sort interval */ d = 4; while (d<=sort_index) d <<= 1; d -= 1; while (d > 1) { d >>= 1; for (j = 0; j <= (sort_index-d); j++) { for(i = j; i >= 0; i -= d) { if ((points[i+d].y < points[i].y) || ((points[i+d].y == points[i].y) && (points[i+d].x <= points[i].x))) { /* swap x1,y1 with x2,y2 */ temp = points[i].y; points[i].y = points[i+d].y; points[i+d].y = temp; temp = points[i].x; points[i].x = points[i+d].x; points[i+d].x = temp; } } } } } /* Watch out for the lack of error checking in the next two functions ... */ static void scan_poly(int const np, struct Point pts[]) { int dx,dy,dxabs,dyabs,i,scan_index,j,k,px,py; int sdx,sdy,x,y,toggle,old_sdy,sy0; /* This array needs to be at least as large as the largest dimension of the bounding box of the poly (but I don't check for overflows ...) */ struct Point coord[5000]; scan_index = 0; /* close polygon */ px = pts[np].x = pts[0].x; py = pts[np].y = pts[0].y; /* This section draws the polygon and stores all the line points * in an array. This doesn't work for concave or non-simple polys. */ /* are y levels same for first and second points? */ if (pts[1].y == pts[0].y) { coord[scan_index].x = px; coord[scan_index].y = py; scan_index++; } #define sign(x) ((x) > 0 ? 1 : ((x)==0 ? 0:(-1)) ) old_sdy = sy0 = sign(pts[1].y - pts[0].y); for (j=0; j= dyabs) { for (k=0; k < dxabs; k++) { y += dyabs; if (y >= dxabs) { y -= dxabs; py += sdy; if (old_sdy != sdy) { old_sdy = sdy; scan_index--; } coord[scan_index].x = px+sdx; coord[scan_index].y = py; scan_index++; } px += sdx; draw_pen(px, py); } } else { for (k=0; k < dyabs; k++) { x += dxabs; if (x >= dyabs) { x -= dyabs; px += sdx; } py += sdy; if (old_sdy != sdy) { old_sdy = sdy; if (sdy != 0) scan_index--; } draw_pen(px,py); coord[scan_index].x = px; coord[scan_index].y = py; scan_index++; } } } /* after polygon has been drawn now fill it */ scan_index--; if (sy0 + sdy == 0) scan_index--; poly_sort(scan_index, coord); toggle = 0; for (i = 0; i < scan_index; i++) { if ((coord[i].y == coord[i+1].y) && (toggle == 0)) { for (j = coord[i].x; j <= coord[i+1].x; j++) draw_pen(j, coord[i].y); toggle = 1; } else toggle = 0; } } static void paintPoly(int const v) { struct Rect bb; struct Point pts[100]; int i, np = (read_word() - 10) >> 2; read_rect(&bb); for (i=0; i= 8 && text_mode < 15) text_mode -= 8; if (verbose) pm_message("text transfer mode = %s", const_name(transfer_name, text_mode)); /* ignore the text mask bit 'cause we don't handle it yet */ text_trf = transfer(text_mode & ~64); } static void TxFont(int const version) { text_font = read_word(); if (verbose) pm_message("text font %s", const_name(font_name, text_font)); } static void TxFace(int const version) { text_face = read_byte(); if (verbose) pm_message("text face %d", text_face); } static void TxSize(int const version) { text_size = read_word(); if (verbose) pm_message("text size %d", text_size); } static void skip_text(void) { skip(read_byte()); } static int abs_value(int const x) { if (x < 0) return -x; else return x; } static struct font* get_font(int const font, int const size, int const style) { int closeness, bestcloseness; struct fontinfo* fi, *best; best = 0; for (fi = fontlist; fi; fi = fi->next) { closeness = abs_value(fi->font - font) * 10000 + abs_value(fi->size - size) * 100 + abs_value(fi->style - style); if (!best || closeness < bestcloseness) { best = fi; bestcloseness = closeness; } } if (best) { if (best->loaded) return best->loaded; if ((best->loaded = pbm_loadbdffont(best->filename))) return best->loaded; } /* It would be better to go looking for the nth best font, really */ return 0; } /* This only does 0, 90, 180 and 270 degree rotations */ static void rotate(int * const x, int * const y) { int tmp; if (ps_rotation >= 315 || ps_rotation <= 45) return; *x -= ps_cent_x; *y -= ps_cent_y; if (ps_rotation > 45 && ps_rotation < 135) { tmp = *x; *x = *y; *y = tmp; } else if (ps_rotation >= 135 && ps_rotation < 225) { *x = -*x; } else if (ps_rotation >= 225 && ps_rotation < 315) { tmp = *x; *x = *y; *y = -tmp; } *x += ps_cent_x; *y += ps_cent_y; } static void do_ps_text(word const tx, word const ty) { int len, width, i, w, h, x, y, rx, ry, o; byte str[256], ch; struct glyph* glyph; current.x = tx; current.y = ty; if (!ps_cent_set) { ps_cent_x += tx; ps_cent_y += ty; ps_cent_set = 1; } len = read_byte(); /* XXX this width calculation is not completely correct */ width = 0; for (i = 0; i < len; i++) { ch = str[i] = read_byte(); if (tfont->glyph[ch]) width += tfont->glyph[ch]->xadd; } if (verbose) { str[len] = '\0'; pm_message("ps text: %s", str); } /* XXX The width is calculated in order to do different justifications. * However, I need the width of original text to finish the job. * In other words, font metrics for Quickdraw fonts */ x = tx; for (i = 0; i < len; i++) { if (!(glyph = tfont->glyph[str[i]])) continue; y = ty - glyph->height - glyph->y; for (h = 0; h < glyph->height; h++) { for (w = 0; w < glyph->width; w++) { rx = x + glyph->x + w; ry = y; rotate(&rx, &ry); if ((rx >= picFrame.left) && (rx < picFrame.right) && (ry >= picFrame.top) && (ry < picFrame.bottom)) { o = PIXEL_INDEX(rx, ry); if (glyph->bmap[h * glyph->width + w]) { red[o] = foreground.red; green[o] = foreground.green; blue[o] = foreground.blue; } } } y++; } x += glyph->xadd; } } static void do_text(word const startx, word const starty) { if (fullres) skip_text(); else { if (!(tfont = get_font(text_font, text_size, text_face))) tfont = pbm_defaultfont("bdf"); if (ps_text) do_ps_text(startx, starty); else { int len; word x, y; x = startx; y = starty; for (len = read_byte(); len > 0; --len) { struct glyph* const glyph = tfont->glyph[read_byte()]; if (glyph) { int dy; int h; for (h = 0, dy = y - glyph->height - glyph->y; h < glyph->height; ++h, ++dy) { int w; for (w = 0; w < glyph->width; ++w) { struct RGBColor * const colorP = glyph->bmap[h * glyph->width + w] ? &black : &white; draw_pixel(x + w + glyph->x, dy, colorP, text_trf); } } x += glyph->xadd; } } current.x = x; current.y = y; } } } static void LongText(int const version) { struct Point p; read_point(&p); do_text(p.x, p.y); } static void DHText(int const version) { current.x += read_byte(); do_text(current.x, current.y); } static void DVText(int const version) { current.y += read_byte(); do_text(current.x, current.y); } static void DHDVText(int const version) { byte dh, dv; dh = read_byte(); dv = read_byte(); if (verbose) pm_message("dh, dv = %d, %d", dh, dv); current.x += dh; current.y += dv; do_text(current.x, current.y); } /* * This could use read_pixmap, but I'm too lazy to hack read_pixmap. */ static void directBits(int const version, bool const skipRegion) { if (dump) { FILE *fp = fopen("data", "wb"); int ch; if (fp == NULL) exit(1); while ((ch = fgetc(ifp)) != EOF) fputc(ch, fp); exit(0); } else { struct pixMap p; struct Rect srcRect; struct Rect dstRect; byte* pm; int pixwidth; word mode; /* skip fake len, and fake EOF */ skip(4); /* Ptr baseAddr == 0x000000ff */ read_word(); /* version */ read_rect(&p.Bounds); pixwidth = p.Bounds.right - p.Bounds.left; p.packType = read_word(); p.packSize = read_long(); p.hRes = read_long(); p.vRes = read_long(); p.pixelType = read_word(); p.pixelSize = read_word(); p.pixelSize = read_word(); /* XXX twice??? */ p.cmpCount = read_word(); p.cmpSize = read_word(); p.planeBytes = read_long(); p.pmTable = read_long(); p.pmReserved = read_long(); if (p.pixelSize == 16) pixwidth *= 2; else if (p.pixelSize == 32) pixwidth *= 3; read_rect(&srcRect); if (verbose) dump_rect("source rectangle:", &srcRect); read_rect(&dstRect); if (verbose) dump_rect("destination rectangle:", &dstRect); mode = read_word(); if (verbose) pm_message("transfer mode = %s", const_name(transfer_name, mode)); if (skipRegion) skip_poly_or_region(version); pm = unpackbits(&p.Bounds, 0, p.pixelSize); blit(&srcRect, &(p.Bounds), pixwidth, pm, p.pixelSize, &dstRect, &picFrame, rowlen, (struct RGBColor*)0, mode); free(pm); } } #define SKIP_REGION_TRUE TRUE #define SKIP_REGION_FALSE FALSE static void DirectBitsRect(int const version) { directBits(version, SKIP_REGION_FALSE); } static void DirectBitsRgn(int const version) { directBits(version, SKIP_REGION_TRUE); } static void do_pixmap(int const version, word const rowBytes, int const is_region) { word mode; struct pixMap p; word pixwidth; byte* pm; struct RGBColor* color_table; struct Rect srcRect; struct Rect dstRect; read_pixmap(&p, NULL); pixwidth = p.Bounds.right - p.Bounds.left; if (verbose) pm_message("%d x %d rectangle", pixwidth, p.Bounds.bottom - p.Bounds.top); color_table = read_color_table(); read_rect(&srcRect); if (verbose) dump_rect("source rectangle:", &srcRect); read_rect(&dstRect); if (verbose) dump_rect("destination rectangle:", &dstRect); mode = read_word(); if (verbose) pm_message("transfer mode = %s", const_name(transfer_name, mode)); if (is_region) skip_poly_or_region(version); stage = "unpacking rectangle"; pm = unpackbits(&p.Bounds, rowBytes, p.pixelSize); blit(&srcRect, &(p.Bounds), pixwidth, pm, 8, &dstRect, &picFrame, rowlen, color_table, mode); free(color_table); free(pm); } static void do_bitmap(int const version, int const rowBytes, int const is_region) { struct Rect Bounds; struct Rect srcRect; struct Rect dstRect; word mode; byte* pm; static struct RGBColor color_table[] = { {65535L, 65535L, 65535L}, {0, 0, 0} }; read_rect(&Bounds); read_rect(&srcRect); read_rect(&dstRect); mode = read_word(); if (verbose) pm_message("transfer mode = %s", const_name(transfer_name, mode)); if (is_region) skip_poly_or_region(version); stage = "unpacking rectangle"; pm = unpackbits(&Bounds, rowBytes, 1); blit(&srcRect, &Bounds, Bounds.right - Bounds.left, pm, 8, &dstRect, &picFrame, rowlen, color_table, mode); free(pm); } static void BitsRect(int const version) { word rowBytes; stage = "Reading rowBytes for bitsrect"; rowBytes = read_word(); if (verbose) pm_message("rowbytes = 0x%x (%d)", rowBytes, rowBytes & 0x7fff); if (rowBytes & 0x8000) do_pixmap(version, rowBytes, 0); else do_bitmap(version, rowBytes, 0); } static void BitsRegion(int const version) { word rowBytes; stage = "Reading rowBytes for bitsregion"; rowBytes = read_word(); if (rowBytes & 0x8000) do_pixmap(version, rowBytes, 1); else do_bitmap(version, rowBytes, 1); } /* * See http://developer.apple.com/techpubs/mac/QuickDraw/QuickDraw-461.html * for opcode description */ static struct opdef const optable[] = { /* 0x00 */ { "NOP", 0, NULL, "nop" }, /* 0x01 */ { "Clip", NA, Clip, "clip" }, /* 0x02 */ { "BkPat", 8, BkPat, "background pattern" }, /* 0x03 */ { "TxFont", 2, TxFont, "text font (word)" }, /* 0x04 */ { "TxFace", 1, TxFace, "text face (byte)" }, /* 0x05 */ { "TxMode", 2, TxMode, "text mode (word)" }, /* 0x06 */ { "SpExtra", 4, NULL, "space extra (fixed point)" }, /* 0x07 */ { "PnSize", 4, PnSize, "pen size (point)" }, /* 0x08 */ { "PnMode", 2, PnMode, "pen mode (word)" }, /* 0x09 */ { "PnPat", 8, PnPat, "pen pattern" }, /* 0x0a */ { "FillPat", 8, FillPat, "fill pattern" }, /* 0x0b */ { "OvSize", 4, NULL, "oval size (point)" }, /* 0x0c */ { "Origin", 4, NULL, "dh, dv (word)" }, /* 0x0d */ { "TxSize", 2, TxSize, "text size (word)" }, /* 0x0e */ { "FgColor", 4, NULL, "foreground color (longword)" }, /* 0x0f */ { "BkColor", 4, NULL, "background color (longword)" }, /* 0x10 */ { "TxRatio", 8, NULL, "numerator (point), denominator (point)" }, /* 0x11 */ { "Version", 1, NULL, "version (byte)" }, /* 0x12 */ { "BkPixPat", NA, BkPixPat, "color background pattern" }, /* 0x13 */ { "PnPixPat", NA, PnPixPat, "color pen pattern" }, /* 0x14 */ { "FillPixPat", NA, FillPixPat, "color fill pattern" }, /* 0x15 */ { "PnLocHFrac", 2, PnLocHFrac, "fractional pen position" }, /* 0x16 */ { "ChExtra", 2, NULL, "extra for each character" }, /* 0x17 */ res(0), /* 0x18 */ res(0), /* 0x19 */ res(0), /* 0x1a */ { "RGBFgCol", RGB_LEN, RGBFgCol, "RGB foreColor" }, /* 0x1b */ { "RGBBkCol", RGB_LEN, RGBBkCol, "RGB backColor" }, /* 0x1c */ { "HiliteMode", 0, NULL, "hilite mode flag" }, /* 0x1d */ { "HiliteColor", RGB_LEN, NULL, "RGB hilite color" }, /* 0x1e */ { "DefHilite", 0, NULL, "Use default hilite color" }, /* 0x1f */ { "OpColor", NA, OpColor, "RGB OpColor for arithmetic modes" }, /* 0x20 */ { "Line", 8, Line, "pnLoc (point), newPt (point)" }, /* 0x21 */ { "LineFrom", 4, LineFrom, "newPt (point)" }, /* 0x22 */ { "ShortLine", 6, ShortLine, "pnLoc (point, dh, dv (-128 .. 127))" }, /* 0x23 */ { "ShortLineFrom", 2, ShortLineFrom, "dh, dv (-128 .. 127)" }, /* 0x24 */ res(WORD_LEN), /* 0x25 */ res(WORD_LEN), /* 0x26 */ res(WORD_LEN), /* 0x27 */ res(WORD_LEN), /* 0x28 */ { "LongText", NA, LongText, "txLoc (point), count (0..255), text" }, /* 0x29 */ { "DHText", NA, DHText, "dh (0..255), count (0..255), text" }, /* 0x2a */ { "DVText", NA, DVText, "dv (0..255), count (0..255), text" }, /* 0x2b */ { "DHDVText", NA, DHDVText, "dh, dv (0..255), count (0..255), text" }, /* 0x2c */ res(WORD_LEN), /* 0x2d */ res(WORD_LEN), /* 0x2e */ res(WORD_LEN), /* 0x2f */ res(WORD_LEN), /* 0x30 */ { "frameRect", 8, frameRect, "rect" }, /* 0x31 */ { "paintRect", 8, paintRect, "rect" }, /* 0x32 */ { "eraseRect", 8, NULL, "rect" }, /* 0x33 */ { "invertRect", 8, NULL, "rect" }, /* 0x34 */ { "fillRect", 8, NULL, "rect" }, /* 0x35 */ res(8), /* 0x36 */ res(8), /* 0x37 */ res(8), /* 0x38 */ { "frameSameRect", 0, frameSameRect, "rect" }, /* 0x39 */ { "paintSameRect", 0, paintSameRect, "rect" }, /* 0x3a */ { "eraseSameRect", 0, NULL, "rect" }, /* 0x3b */ { "invertSameRect", 0, NULL, "rect" }, /* 0x3c */ { "fillSameRect", 0, NULL, "rect" }, /* 0x3d */ res(0), /* 0x3e */ res(0), /* 0x3f */ res(0), /* 0x40 */ { "frameRRect", 8, NULL, "rect" }, /* 0x41 */ { "paintRRect", 8, NULL, "rect" }, /* 0x42 */ { "eraseRRect", 8, NULL, "rect" }, /* 0x43 */ { "invertRRect", 8, NULL, "rect" }, /* 0x44 */ { "fillRRrect", 8, NULL, "rect" }, /* 0x45 */ res(8), /* 0x46 */ res(8), /* 0x47 */ res(8), /* 0x48 */ { "frameSameRRect", 0, NULL, "rect" }, /* 0x49 */ { "paintSameRRect", 0, NULL, "rect" }, /* 0x4a */ { "eraseSameRRect", 0, NULL, "rect" }, /* 0x4b */ { "invertSameRRect", 0, NULL, "rect" }, /* 0x4c */ { "fillSameRRect", 0, NULL, "rect" }, /* 0x4d */ res(0), /* 0x4e */ res(0), /* 0x4f */ res(0), /* 0x50 */ { "frameOval", 8, NULL, "rect" }, /* 0x51 */ { "paintOval", 8, NULL, "rect" }, /* 0x52 */ { "eraseOval", 8, NULL, "rect" }, /* 0x53 */ { "invertOval", 8, NULL, "rect" }, /* 0x54 */ { "fillOval", 8, NULL, "rect" }, /* 0x55 */ res(8), /* 0x56 */ res(8), /* 0x57 */ res(8), /* 0x58 */ { "frameSameOval", 0, NULL, "rect" }, /* 0x59 */ { "paintSameOval", 0, NULL, "rect" }, /* 0x5a */ { "eraseSameOval", 0, NULL, "rect" }, /* 0x5b */ { "invertSameOval", 0, NULL, "rect" }, /* 0x5c */ { "fillSameOval", 0, NULL, "rect" }, /* 0x5d */ res(0), /* 0x5e */ res(0), /* 0x5f */ res(0), /* 0x60 */ { "frameArc", 12, NULL, "rect, startAngle, arcAngle" }, /* 0x61 */ { "paintArc", 12, NULL, "rect, startAngle, arcAngle" }, /* 0x62 */ { "eraseArc", 12, NULL, "rect, startAngle, arcAngle" }, /* 0x63 */ { "invertArc", 12, NULL, "rect, startAngle, arcAngle" }, /* 0x64 */ { "fillArc", 12, NULL, "rect, startAngle, arcAngle" }, /* 0x65 */ res(12), /* 0x66 */ res(12), /* 0x67 */ res(12), /* 0x68 */ { "frameSameArc", 4, NULL, "rect, startAngle, arcAngle" }, /* 0x69 */ { "paintSameArc", 4, NULL, "rect, startAngle, arcAngle" }, /* 0x6a */ { "eraseSameArc", 4, NULL, "rect, startAngle, arcAngle" }, /* 0x6b */ { "invertSameArc", 4, NULL, "rect, startAngle, arcAngle" }, /* 0x6c */ { "fillSameArc", 4, NULL, "rect, startAngle, arcAngle" }, /* 0x6d */ res(4), /* 0x6e */ res(4), /* 0x6f */ res(4), /* 0x70 */ { "framePoly", NA, skip_poly_or_region, "poly" }, /* 0x71 */ { "paintPoly", NA, paintPoly, "poly" }, /* 0x72 */ { "erasePoly", NA, skip_poly_or_region, "poly" }, /* 0x73 */ { "invertPoly", NA, skip_poly_or_region, "poly" }, /* 0x74 */ { "fillPoly", NA, skip_poly_or_region, "poly" }, /* 0x75 */ resf(skip_poly_or_region), /* 0x76 */ resf(skip_poly_or_region), /* 0x77 */ resf(skip_poly_or_region), /* 0x78 */ { "frameSamePoly", 0, NULL, "poly (NYI)" }, /* 0x79 */ { "paintSamePoly", 0, NULL, "poly (NYI)" }, /* 0x7a */ { "eraseSamePoly", 0, NULL, "poly (NYI)" }, /* 0x7b */ { "invertSamePoly", 0, NULL, "poly (NYI)" }, /* 0x7c */ { "fillSamePoly", 0, NULL, "poly (NYI)" }, /* 0x7d */ res(0), /* 0x7e */ res(0), /* 0x7f */ res(0), /* 0x80 */ { "frameRgn", NA, skip_poly_or_region, "region" }, /* 0x81 */ { "paintRgn", NA, skip_poly_or_region, "region" }, /* 0x82 */ { "eraseRgn", NA, skip_poly_or_region, "region" }, /* 0x83 */ { "invertRgn", NA, skip_poly_or_region, "region" }, /* 0x84 */ { "fillRgn", NA, skip_poly_or_region, "region" }, /* 0x85 */ resf(skip_poly_or_region), /* 0x86 */ resf(skip_poly_or_region), /* 0x87 */ resf(skip_poly_or_region), /* 0x88 */ { "frameSameRgn", 0, NULL, "region (NYI)" }, /* 0x89 */ { "paintSameRgn", 0, NULL, "region (NYI)" }, /* 0x8a */ { "eraseSameRgn", 0, NULL, "region (NYI)" }, /* 0x8b */ { "invertSameRgn", 0, NULL, "region (NYI)" }, /* 0x8c */ { "fillSameRgn", 0, NULL, "region (NYI)" }, /* 0x8d */ res(0), /* 0x8e */ res(0), /* 0x8f */ res(0), /* 0x90 */ { "BitsRect", NA, BitsRect, "copybits, rect clipped" }, /* 0x91 */ { "BitsRgn", NA, BitsRegion, "copybits, rgn clipped" }, /* 0x92 */ res(WORD_LEN), /* 0x93 */ res(WORD_LEN), /* 0x94 */ res(WORD_LEN), /* 0x95 */ res(WORD_LEN), /* 0x96 */ res(WORD_LEN), /* 0x97 */ res(WORD_LEN), /* 0x98 */ { "PackBitsRect", NA, BitsRect, "packed copybits, rect clipped" }, /* 0x99 */ { "PackBitsRgn", NA, BitsRegion, "packed copybits, rgn clipped" }, /* 0x9a */ { "DirectBitsRect", NA, DirectBitsRect, "PixMap, srcRect, dstRect, int copymode, PixData" }, /* 0x9b */ { "DirectBitsRgn", NA, DirectBitsRgn, "PixMap, srcRect, dstRect, int copymode, maskRgn, PixData" }, /* 0x9c */ res(WORD_LEN), /* 0x9d */ res(WORD_LEN), /* 0x9e */ res(WORD_LEN), /* 0x9f */ res(WORD_LEN), /* 0xa0 */ { "ShortComment", 2, ShortComment, "kind (word)" }, /* 0xa1 */ { "LongComment", NA, LongComment, "kind (word), size (word), data" } }; static void interpret_pict(void) { byte ch; word picSize; word opcode; word len; int version; int i; for (i = 0; i < 64; i++) pen_pat.pix[i] = bkpat.pix[i] = fillpat.pix[i] = 1; pen_width = pen_height = 1; pen_mode = 0; /* srcCopy */ pen_trf = transfer(pen_mode); text_mode = 0; /* srcCopy */ text_trf = transfer(text_mode); stage = "Reading picture size"; picSize = read_word(); if (verbose) pm_message("picture size = %d (0x%x)", picSize, picSize); stage = "reading picture frame"; read_rect(&picFrame); if (verbose) { dump_rect("Picture frame:", &picFrame); pm_message("Picture size is %d x %d", picFrame.right - picFrame.left, picFrame.bottom - picFrame.top); } if (!fullres) alloc_planes(); while ((ch = read_byte()) == 0) ; if (ch != 0x11) pm_error("No version number"); switch (read_byte()) { case 1: version = 1; break; case 2: if (read_byte() != 0xff) pm_error("can only do version 2, subcode 0xff"); version = 2; break; default: pm_error("Unknown version"); } if (verbose) pm_message("PICT version %d", version); while((opcode = get_op(version)) != 0xff) { if (opcode < 0xa2) { stage = optable[opcode].name; if (verbose) { if (STREQ(stage, "reserved")) pm_message("reserved opcode=0x%x", opcode); else pm_message("%s", stage = optable[opcode].name); } if (optable[opcode].impl != NULL) (*optable[opcode].impl)(version); else if (optable[opcode].len >= 0) skip(optable[opcode].len); else switch (optable[opcode].len) { case WORD_LEN: len = read_word(); skip(len); break; default: pm_error("can't do length of %d", optable[opcode].len); } } else if (opcode == 0xc00) { if (verbose) pm_message("HeaderOp"); stage = "HeaderOp"; skip(24); } else if (opcode >= 0xa2 && opcode <= 0xaf) { stage = "skipping reserved"; if (verbose) pm_message("%s 0x%x", stage, opcode); skip(read_word()); } else if (opcode >= 0xb0 && opcode <= 0xcf) { /* just a reserved opcode, no data */ if (verbose) pm_message("reserved 0x%x", opcode); } else if (opcode >= 0xd0 && opcode <= 0xfe) { stage = "skipping reserved"; if (verbose) pm_message("%s 0x%x", stage, opcode); skip(read_long()); } else if (opcode >= 0x100 && opcode <= 0x7fff) { stage = "skipping reserved"; if (verbose) pm_message("%s 0x%x", stage, opcode); skip((opcode >> 7) & 255); } else if (opcode >= 0x8000 && opcode <= 0x80ff) { /* just a reserved opcode */ if (verbose) pm_message("reserved 0x%x", opcode); } else if (opcode >= 8100) { stage = "skipping reserved"; if (verbose) pm_message("%s 0x%x", stage, opcode); skip(read_long()); } else pm_error("can't handle opcode of %x", opcode); } output_ppm(red, green, blue); } int main(int argc, char * argv[]) { int argn; int header; const char* const usage = "[-verbose] [-fullres] [-noheader] [-quickdraw] [-fontdir file] [pictfile]"; ppm_init( &argc, argv ); argn = 1; verbose = 0; fullres = 0; header = 1; recognize_comment = 1; while (argn < argc && argv[argn][0] == '-' && argv[argn][1] != '\0') { if (pm_keymatch(argv[argn], "-verbose", 2)) verbose++; else if (pm_keymatch(argv[argn], "-fullres", 3)) fullres = 1; else if (pm_keymatch(argv[argn], "-noheader", 2)) header = 0; else if (pm_keymatch(argv[argn], "-quickdraw", 2)) recognize_comment = 0; else if (pm_keymatch(argv[argn], "-fontdir", 3)) { argn++; if (!argv[argn]) pm_usage(usage); else load_fontdir(argv[argn]); } else pm_usage(usage); ++argn; } if (load_fontdir("fontdir") < 0) pm_message("warning: can't load font directory 'fontdir'\n"); if (argn < argc) { ifp = pm_openr(argv[argn]); ++argn; } else ifp = stdin; if (argn != argc) pm_usage(usage); if (header) { stage = "Reading 512 byte header"; skip(512); } interpret_pict(); exit(0); }