jpeg2eps.c

   1 /*
   2  * jpeg2eps.c
   3  * Copyright (C) 2000-2002 A.J. van Os; Released under GPL
   4  *
   5  * Description:
   6  * Functions to translate jpeg pictures into eps
   7  *
   8  */
   9
  10 #include <stdio.h>
  11 #include "antiword.h"
  12
  13 #if defined(DEBUG)
  14 static int      iPicCounter = 0;
  15 #endif /* DEBUG */
  16
  17
  18 #if defined(DEBUG)
  19 /*
  20  * vCopy2File
  21  */
  22 static void
  23 vCopy2File(FILE *pFile, ULONG ulFileOffset, size_t tPictureLen)
  24 {
  25         FILE    *pOutFile;
  26         size_t  tIndex;
  27         int     iTmp;
  28         char    szFilename[30];
  29
  30         if (!bSetDataOffset(pFile, ulFileOffset)) {
  31                 return;
  32         }
  33
  34         sprintf(szFilename, "/tmp/pic/pic%04d.jpg", ++iPicCounter);
  35         pOutFile = fopen(szFilename, "wb");
  36         if (pOutFile == NULL) {
  37                 return;
  38         }
  39         for (tIndex = 0; tIndex < tPictureLen; tIndex++) {
  40                 iTmp = iNextByte(pFile);
  41                 if (putc(iTmp, pOutFile) == EOF) {
  42                         break;
  43                 }
  44         }
  45         (void)fclose(pOutFile);
  46 } /* end of vCopy2File */
  47 #endif /* DEBUG */
  48
  49 /*
  50  * bTranslateJPEG - translate a JPEG picture
  51  *
  52  * This function translates a picture from jpeg to eps
  53  *
  54  * return TRUE when sucessful, otherwise FALSE
  55  */
  56 BOOL
  57 bTranslateJPEG(diagram_type *pDiag, FILE *pFile,
  58         ULONG ulFileOffset, size_t tPictureLen, const imagedata_type *pImg)
  59 {
  60 #if defined(DEBUG)
  61         vCopy2File(pFile, ulFileOffset, tPictureLen);
  62 #endif /* DEBUG */
  63
  64         /* Seek to start position of JPEG data */
  65         if (!bSetDataOffset(pFile, ulFileOffset)) {
  66                 return FALSE;
  67         }
  68
  69         vImagePrologue(pDiag, pImg);
  70         vASCII85EncodeFile(pFile, pDiag->pOutFile, tPictureLen);
  71         vImageEpilogue(pDiag);
  72
  73         return TRUE;
  74 } /* end of bTranslateJPEG */