sys/src/cmd/aux/antiword/imgtrans.c

   1 /*
   2  * imgtrans.c
   3  * Copyright (C) 2000-2002 A.J. van Os; Released under GPL
   4  *
   5  * Description:
   6  * Generic functions to translate Word images
   7  */
   8
   9 #include <stdio.h>
  10 #include "antiword.h"
  11
  12
  13 /*
  14  * bTranslateImage - translate the image
  15  *
  16  * This function reads the type of the given image and and gets it translated.
  17  *
  18  * return TRUE when sucessful, otherwise FALSE
  19  */
  20 BOOL
  21 bTranslateImage(diagram_type *pDiag, FILE *pFile, BOOL bMinimalInformation,
  22         ULONG ulFileOffsetImage, const imagedata_type *pImg)
  23 {
  24         options_type    tOptions;
  25
  26         DBG_MSG("bTranslateImage");
  27
  28         fail(pDiag == NULL);
  29         fail(pFile == NULL);
  30         fail(ulFileOffsetImage == FC_INVALID);
  31         fail(pImg == NULL);
  32         fail(pImg->iHorSizeScaled <= 0);
  33         fail(pImg->iVerSizeScaled <= 0);
  34
  35         vGetOptions(&tOptions);
  36         fail(tOptions.eImageLevel == level_no_images);
  37
  38         if (bMinimalInformation) {
  39                 return bAddDummyImage(pDiag, pImg);
  40         }
  41
  42         switch (pImg->eImageType) {
  43         case imagetype_is_dib:
  44                 return bTranslateDIB(pDiag, pFile,
  45                                 ulFileOffsetImage + pImg->tPosition,
  46                                 pImg);
  47         case imagetype_is_jpeg:
  48                 return bTranslateJPEG(pDiag, pFile,
  49                                 ulFileOffsetImage + pImg->tPosition,
  50                                 pImg->tLength - pImg->tPosition,
  51                                 pImg);
  52         case imagetype_is_png:
  53                 if (tOptions.eImageLevel == level_ps_2) {
  54                         return bAddDummyImage(pDiag, pImg);
  55                 }
  56                 return bTranslatePNG(pDiag, pFile,
  57                                 ulFileOffsetImage + pImg->tPosition,
  58                                 pImg->tLength - pImg->tPosition,
  59                                 pImg);
  60         case imagetype_is_emf:
  61         case imagetype_is_wmf:
  62         case imagetype_is_pict:
  63         case imagetype_is_external:
  64                 /* FIXME */
  65                 return bAddDummyImage(pDiag, pImg);
  66         case imagetype_is_unknown:
  67         default:
  68                 DBG_DEC(pImg->eImageType);
  69                 return bAddDummyImage(pDiag, pImg);
  70         }
  71 } /* end of bTranslateImage */