Subversion Repositories planix.SVN

/*
 * jpeg2sprt.c
 * Copyright (C) 2000-2002 A.J. van Os; Released under GPL
 *
 * Description:
 * Functions to translate jpeg pictures into sprites
 */

#include <stdio.h>
#include "antiword.h"

#if 0 /* defined(DEBUG) */
static int iPicCounter = 0;
#endif /* DEBUG */


#if 0 /* defined(DEBUG) */
static void
vCopy2File(UCHAR *pucJpeg, size_t tJpegSize)
{
        FILE    *pOutFile;
        size_t  tIndex;
        char    szFilename[30];

        sprintf(szFilename, "<Wimp$ScrapDir>.jpeg%04d", ++iPicCounter);
        pOutFile = fopen(szFilename, "wb");
        if (pOutFile == NULL) {
                return;
        }
        DBG_MSG(szFilename);
        for (tIndex = 0; tIndex < tJpegSize; tIndex++) {
                if (putc(pucJpeg[tIndex], pOutFile) == EOF) {
                        break;
                }
        }
        (void)fclose(pOutFile);
        vSetFiletype(szFilename, FILETYPE_JPEG);
} /* end of vCopy2File */
#endif /* DEBUG */

/*
 * bSave2Draw - save the JPEG picture to the Draw file
 *
 * This function puts a JPEG picture in a Draw file
 *
 * return TRUE when sucessful, otherwise FALSE
 */
BOOL
bSave2Draw(diagram_type *pDiag, FILE *pFile,
        size_t tJpegSize, const imagedata_type *pImg)
{
        UCHAR   *pucJpeg, *pucTmp;
        size_t  tLen;
        int     iByte;

        pucJpeg = xmalloc(tJpegSize);
        for (pucTmp = pucJpeg, tLen = 0; tLen < tJpegSize; pucTmp++, tLen++) {
                iByte = iNextByte(pFile);
                if (iByte == EOF) {
                        return FALSE;
                }
                *pucTmp = (UCHAR)iByte;
        }

#if 0 /* defined(DEBUG) */
        vCopy2File(pucJpeg, tJpegSize);
#endif /* DEBUG */

        /* Add the JPEG to the Draw file */
        vImage2Diagram(pDiag, pImg, pucJpeg, tJpegSize);

        xfree(pucJpeg);
        return TRUE;
} /* end of bSave2Draw */

/*
 * bTranslateJPEG - translate a JPEG picture
 *
 * This function translates a picture from jpeg to sprite
 *
 * return TRUE when sucessful, otherwise FALSE
 */
BOOL
bTranslateJPEG(diagram_type *pDiag, FILE *pFile,
        ULONG ulFileOffset, size_t tPictureLen, const imagedata_type *pImg)
{
        /* Seek to start position of JPEG data */
        if (!bSetDataOffset(pFile, ulFileOffset)) {
                return FALSE;
        }

        if (iGetRiscOsVersion() >= 360) {
                return bSave2Draw(pDiag, pFile, tPictureLen, pImg);
        }
        /* JPEG is not supported until RISC OS 3.6 */
        return bAddDummyImage(pDiag, pImg);
} /* end of bTranslateJPEG */