pdftops/ImageOutputDev.cxx

   1 //========================================================================
   2 //
   3 // ImageOutputDev.cc
   4 //
   5 // Copyright 1998 Derek B. Noonburg
   6 //
   7 //========================================================================
   8
   9 #ifdef __GNUC__
  10 #pragma implementation
  11 #endif
  12
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <stddef.h>
  16 #include <ctype.h>
  17 #include "gmem.h"
  18 #include "config.h"
  19 #include "Error.h"
  20 #include "GfxState.h"
  21 #include "Object.h"
  22 #include "Stream.h"
  23 #include "ImageOutputDev.h"
  24
  25 ImageOutputDev::ImageOutputDev(char *fileRoot1, GBool dumpJPEG1) {
  26   fileRoot = copyString(fileRoot1);
  27   fileName = (char *)gmalloc(strlen(fileRoot) + 20);
  28   dumpJPEG = dumpJPEG1;
  29   imgNum = 0;
  30   ok = gTrue;
  31 }
  32
  33 ImageOutputDev::~ImageOutputDev() {
  34   gfree(fileName);
  35   gfree(fileRoot);
  36 }
  37
  38 void ImageOutputDev::drawImageMask(GfxState *state, Stream *str,
  39                                    int width, int height, GBool invert,
  40                                    GBool inlineImg) {
  41   FILE *f;
  42   int c;
  43
  44   // dump JPEG file
  45   if (dumpJPEG && str->getKind() == strDCT) {
  46
  47     // open the image file
  48     sprintf(fileName, "%s-%03d.jpg", fileRoot, imgNum);
  49     ++imgNum;
  50     if (!(f = fopen(fileName, "wb"))) {
  51       error(-1, "Couldn't open image file '%s'", fileName);
  52       return;
  53     }
  54
  55     // initialize stream
  56     str = ((DCTStream *)str)->getRawStream();
  57     str->reset();
  58
  59     // copy the stream
  60     while ((c = str->getChar()) != EOF)
  61       fputc(c, f);
  62
  63     fclose(f);
  64
  65   // dump PBM file
  66   } else {
  67
  68     // open the image file and write the PBM header
  69     sprintf(fileName, "%s-%03d.pbm", fileRoot, imgNum);
  70     ++imgNum;
  71     if (!(f = fopen(fileName, "wb"))) {
  72       error(-1, "Couldn't open image file '%s'", fileName);
  73       return;
  74     }
  75     fprintf(f, "P4\n");
  76     fprintf(f, "%d %d\n", width, height);
  77
  78     // initialize stream
  79     str->reset();
  80
  81     // copy the stream
  82     while ((c = str->getChar()) != EOF)
  83       fputc(c, f);
  84
  85     fclose(f);
  86   }
  87 }
  88
  89 void ImageOutputDev::drawImage(GfxState *state, Stream *str, int width,
  90                                int height, GfxImageColorMap *colorMap,
  91                                GBool inlineImg) {
  92   FILE *f;
  93   ImageStream *imgStr;
  94   Guchar pixBuf[4];
  95   GfxColor color;
  96   int x, y;
  97   int c;
  98
  99   // dump JPEG file
 100   if (dumpJPEG && str->getKind() == strDCT) {
 101
 102     // open the image file
 103     sprintf(fileName, "%s-%03d.jpg", fileRoot, imgNum);
 104     ++imgNum;
 105     if (!(f = fopen(fileName, "wb"))) {
 106       error(-1, "Couldn't open image file '%s'", fileName);
 107       return;
 108     }
 109
 110     // initialize stream
 111     str = ((DCTStream *)str)->getRawStream();
 112     str->reset();
 113
 114     // copy the stream
 115     while ((c = str->getChar()) != EOF)
 116       fputc(c, f);
 117
 118     fclose(f);
 119
 120   // dump PPM file
 121   } else {
 122
 123     // open the image file and write the PPM header
 124     sprintf(fileName, "%s-%03d.ppm", fileRoot, imgNum);
 125     ++imgNum;
 126     if (!(f = fopen(fileName, "wb"))) {
 127       error(-1, "Couldn't open image file '%s'", fileName);
 128       return;
 129     }
 130     fprintf(f, "P6\n");
 131     fprintf(f, "%d %d\n", width, height);
 132     fprintf(f, "255\n");
 133
 134     // initialize stream
 135     imgStr = new ImageStream(str, width, colorMap->getNumPixelComps(),
 136                              colorMap->getBits());
 137     imgStr->reset();
 138
 139     // for each line...
 140     for (y = 0; y < height; ++y) {
 141
 142       // write the line
 143       for (x = 0; x < width; ++x) {
 144         imgStr->getPixel(pixBuf);
 145         colorMap->getColor(pixBuf, &color);
 146         fputc((int)(color.getR() * 255 + 0.5), f);
 147         fputc((int)(color.getG() * 255 + 0.5), f);
 148         fputc((int)(color.getB() * 255 + 0.5), f);
 149       }
 150     }
 151     delete imgStr;
 152
 153     fclose(f);
 154   }
 155 }