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WebSVN – planix.SVN – Blame – /os/branches/feature-vt/sys/src/cmd/aux/antiword/jpeg2sprt.c – Rev 2

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/*
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 * jpeg2sprt.c
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 * Copyright (C) 2000-2002 A.J. van Os; Released under GPL
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 *
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 * Description:
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 * Functions to translate jpeg pictures into sprites
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 */
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#include <stdio.h>
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#include "antiword.h"
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#if 0 /* defined(DEBUG) */
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static int iPicCounter = 0;
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#endif /* DEBUG */
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#if 0 /* defined(DEBUG) */
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static void
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vCopy2File(UCHAR *pucJpeg, size_t tJpegSize)
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{
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	FILE	*pOutFile;
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	size_t	tIndex;
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	char	szFilename[30];
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	sprintf(szFilename, "<Wimp$ScrapDir>.jpeg%04d", ++iPicCounter);
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	pOutFile = fopen(szFilename, "wb");
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	if (pOutFile == NULL) {
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		return;
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	}
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	DBG_MSG(szFilename);
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	for (tIndex = 0; tIndex < tJpegSize; tIndex++) {
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		if (putc(pucJpeg[tIndex], pOutFile) == EOF) {
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			break;
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		}
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	}
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	(void)fclose(pOutFile);
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	vSetFiletype(szFilename, FILETYPE_JPEG);
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} /* end of vCopy2File */
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#endif /* DEBUG */
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/*
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 * bSave2Draw - save the JPEG picture to the Draw file
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 *
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 * This function puts a JPEG picture in a Draw file
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 *
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 * return TRUE when sucessful, otherwise FALSE
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 */
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BOOL
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bSave2Draw(diagram_type *pDiag, FILE *pFile,
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	size_t tJpegSize, const imagedata_type *pImg)
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{
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	UCHAR	*pucJpeg, *pucTmp;
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	size_t	tLen;
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	int	iByte;
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	pucJpeg = xmalloc(tJpegSize);
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	for (pucTmp = pucJpeg, tLen = 0; tLen < tJpegSize; pucTmp++, tLen++) {
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		iByte = iNextByte(pFile);
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		if (iByte == EOF) {
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			return FALSE;
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		}
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		*pucTmp = (UCHAR)iByte;
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	}
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#if 0 /* defined(DEBUG) */
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	vCopy2File(pucJpeg, tJpegSize);
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#endif /* DEBUG */
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	/* Add the JPEG to the Draw file */
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	vImage2Diagram(pDiag, pImg, pucJpeg, tJpegSize);
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	xfree(pucJpeg);
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	return TRUE;
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} /* end of bSave2Draw */
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/*
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 * bTranslateJPEG - translate a JPEG picture
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 *
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 * This function translates a picture from jpeg to sprite
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 *
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 * return TRUE when sucessful, otherwise FALSE
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 */
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BOOL
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bTranslateJPEG(diagram_type *pDiag, FILE *pFile,
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	ULONG ulFileOffset, size_t tPictureLen, const imagedata_type *pImg)
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{
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  	/* Seek to start position of JPEG data */
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	if (!bSetDataOffset(pFile, ulFileOffset)) {
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		return FALSE;
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	}
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	if (iGetRiscOsVersion() >= 360) {
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		return bSave2Draw(pDiag, pFile, tPictureLen, pImg);
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	}
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  	/* JPEG is not supported until RISC OS 3.6 */
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	return bAddDummyImage(pDiag, pImg);
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} /* end of bTranslateJPEG */