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/*
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* imgexam.c
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* Copyright (C) 2000-2004 A.J. van Os; Released under GNU GPL
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*
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* Description:
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* Functions to examine image headers
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*
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*================================================================
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* Part of this software is based on:
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* jpeg2ps - convert JPEG compressed images to PostScript Level 2
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* Copyright (C) 1994-99 Thomas Merz (tm@muc.de)
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*================================================================
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* The credit should go to him, but all the bugs are mine.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include "antiword.h"
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/* BMP compression types */
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#define BI_RGB 0
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#define BI_RLE8 1
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#define BI_RLE4 2
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/* PNG colortype bits */
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#define PNG_CB_PALETTE 0x01
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#define PNG_CB_COLOR 0x02
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#define PNG_CB_ALPHA 0x04
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/* Instance signature */
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#define MSOBI_WMF 0x0216
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#define MSOBI_EMF 0x03d4
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#define MSOBI_PICT 0x0542
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#define MSOBI_PNG 0x06e0
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#define MSOBI_JPEG 0x046a
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#define MSOBI_DIB 0x07a8
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/* The following enum is stolen from the IJG JPEG library */
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typedef enum { /* JPEG marker codes */
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M_SOF0 = 0xc0, /* baseline DCT */
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M_SOF1 = 0xc1, /* extended sequential DCT */
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M_SOF2 = 0xc2, /* progressive DCT */
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M_SOF3 = 0xc3, /* lossless (sequential) */
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M_SOF5 = 0xc5, /* differential sequential DCT */
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M_SOF6 = 0xc6, /* differential progressive DCT */
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M_SOF7 = 0xc7, /* differential lossless */
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M_JPG = 0xc8, /* JPEG extensions */
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M_SOF9 = 0xc9, /* extended sequential DCT */
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M_SOF10 = 0xca, /* progressive DCT */
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M_SOF11 = 0xcb, /* lossless (sequential) */
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M_SOF13 = 0xcd, /* differential sequential DCT */
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M_SOF14 = 0xce, /* differential progressive DCT */
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M_SOF15 = 0xcf, /* differential lossless */
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M_DHT = 0xc4, /* define Huffman tables */
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M_DAC = 0xcc, /* define arithmetic conditioning table */
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M_RST0 = 0xd0, /* restart */
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M_RST1 = 0xd1, /* restart */
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M_RST2 = 0xd2, /* restart */
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M_RST3 = 0xd3, /* restart */
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M_RST4 = 0xd4, /* restart */
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M_RST5 = 0xd5, /* restart */
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M_RST6 = 0xd6, /* restart */
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M_RST7 = 0xd7, /* restart */
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M_SOI = 0xd8, /* start of image */
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M_EOI = 0xd9, /* end of image */
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M_SOS = 0xda, /* start of scan */
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M_DQT = 0xdb, /* define quantization tables */
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M_DNL = 0xdc, /* define number of lines */
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M_DRI = 0xdd, /* define restart interval */
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M_DHP = 0xde, /* define hierarchical progression */
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M_EXP = 0xdf, /* expand reference image(s) */
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M_APP0 = 0xe0, /* application marker, used for JFIF */
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M_APP1 = 0xe1, /* application marker */
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M_APP2 = 0xe2, /* application marker */
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M_APP3 = 0xe3, /* application marker */
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M_APP4 = 0xe4, /* application marker */
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M_APP5 = 0xe5, /* application marker */
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M_APP6 = 0xe6, /* application marker */
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M_APP7 = 0xe7, /* application marker */
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M_APP8 = 0xe8, /* application marker */
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M_APP9 = 0xe9, /* application marker */
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M_APP10 = 0xea, /* application marker */
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M_APP11 = 0xeb, /* application marker */
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M_APP12 = 0xec, /* application marker */
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M_APP13 = 0xed, /* application marker */
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M_APP14 = 0xee, /* application marker, used by Adobe */
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M_APP15 = 0xef, /* application marker */
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M_JPG0 = 0xf0, /* reserved for JPEG extensions */
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M_JPG13 = 0xfd, /* reserved for JPEG extensions */
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M_COM = 0xfe, /* comment */
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M_TEM = 0x01 /* temporary use */
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} JPEG_MARKER;
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/*
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* bFillPaletteDIB - fill the palette part of the imagesdata
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*
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* returns TRUE if the images must be a color image, otherwise FALSE;
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*/
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static BOOL
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bFillPaletteDIB(FILE *pFile, imagedata_type *pImg, BOOL bNewFormat)
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{
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int iIndex;
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BOOL bIsColorPalette;
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fail(pFile == NULL);
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fail(pImg == NULL);
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if (pImg->uiBitsPerComponent > 8) {
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/* No palette, image uses more than 256 colors */
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return TRUE;
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}
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if (pImg->iColorsUsed <= 0) {
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/* Not specified, so compute the number of colors used */
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pImg->iColorsUsed = 1 << pImg->uiBitsPerComponent;
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}
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fail(pImg->iColorsUsed > 256);
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if (pImg->iColorsUsed > 256) {
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pImg->iColorsUsed = 256;
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}
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bIsColorPalette = FALSE;
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for (iIndex = 0; iIndex < pImg->iColorsUsed; iIndex++) {
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/* From BGR order to RGB order */
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pImg->aucPalette[iIndex][2] = (UCHAR)iNextByte(pFile);
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pImg->aucPalette[iIndex][1] = (UCHAR)iNextByte(pFile);
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pImg->aucPalette[iIndex][0] = (UCHAR)iNextByte(pFile);
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if (bNewFormat) {
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(void)iNextByte(pFile);
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}
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NO_DBG_PRINT_BLOCK(pImg->aucPalette[iIndex], 3);
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if (pImg->aucPalette[iIndex][0] !=
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pImg->aucPalette[iIndex][1] ||
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pImg->aucPalette[iIndex][1] !=
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pImg->aucPalette[iIndex][2]) {
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bIsColorPalette = TRUE;
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}
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}
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return bIsColorPalette;
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} /* end of bFillPaletteDIB */
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/*
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* bExamineDIB - Examine a DIB header
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*
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* return TRUE if successful, otherwise FALSE
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*/
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static BOOL
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bExamineDIB(FILE *pFile, imagedata_type *pImg)
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{
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size_t tHeaderSize;
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int iPlanes, iCompression;
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tHeaderSize = (size_t)ulNextLong(pFile);
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switch (tHeaderSize) {
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case 12:
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pImg->iWidth = (int)usNextWord(pFile);
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pImg->iHeight = (int)usNextWord(pFile);
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iPlanes = (int)usNextWord(pFile);
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pImg->uiBitsPerComponent = (UINT)usNextWord(pFile);
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iCompression = BI_RGB;
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pImg->iColorsUsed = 0;
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break;
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case 40:
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case 64:
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pImg->iWidth = (int)ulNextLong(pFile);
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pImg->iHeight = (int)ulNextLong(pFile);
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iPlanes = (int)usNextWord(pFile);
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pImg->uiBitsPerComponent = (UINT)usNextWord(pFile);
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iCompression = (int)ulNextLong(pFile);
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(void)tSkipBytes(pFile, 12);
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pImg->iColorsUsed = (int)ulNextLong(pFile);
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(void)tSkipBytes(pFile, tHeaderSize - 36);
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break;
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default:
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DBG_DEC(tHeaderSize);
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return FALSE;
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}
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DBG_DEC(pImg->iWidth);
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DBG_DEC(pImg->iHeight);
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DBG_DEC(pImg->uiBitsPerComponent);
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DBG_DEC(iCompression);
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DBG_DEC(pImg->iColorsUsed);
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/* Do some sanity checks with the parameters */
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if (iPlanes != 1) {
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DBG_DEC(iPlanes);
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return FALSE;
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}
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if (pImg->iWidth <= 0 || pImg->iHeight <= 0) {
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DBG_DEC(pImg->iWidth);
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DBG_DEC(pImg->iHeight);
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return FALSE;
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}
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if (pImg->uiBitsPerComponent != 1 && pImg->uiBitsPerComponent != 4 &&
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pImg->uiBitsPerComponent != 8 && pImg->uiBitsPerComponent != 24) {
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DBG_DEC(pImg->uiBitsPerComponent);
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return FALSE;
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}
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if (iCompression != BI_RGB &&
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(pImg->uiBitsPerComponent == 1 || pImg->uiBitsPerComponent == 24)) {
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return FALSE;
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}
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if (iCompression == BI_RLE8 && pImg->uiBitsPerComponent == 4) {
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return FALSE;
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}
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if (iCompression == BI_RLE4 && pImg->uiBitsPerComponent == 8) {
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return FALSE;
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}
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switch (iCompression) {
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case BI_RGB:
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pImg->eCompression = compression_none;
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break;
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case BI_RLE4:
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pImg->eCompression = compression_rle4;
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break;
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case BI_RLE8:
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pImg->eCompression = compression_rle8;
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break;
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default:
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DBG_DEC(iCompression);
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return FALSE;
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}
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pImg->bColorImage = bFillPaletteDIB(pFile, pImg, tHeaderSize > 12);
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if (pImg->uiBitsPerComponent <= 8) {
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pImg->iComponents = 1;
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} else {
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pImg->iComponents = (int)(pImg->uiBitsPerComponent / 8);
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}
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return TRUE;
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} /* end of bExamineDIB */
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/*
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* iNextMarker - read the next JPEG marker
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*/
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static int
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iNextMarker(FILE *pFile)
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{
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int iMarker;
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do {
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do {
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iMarker = iNextByte(pFile);
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} while (iMarker != 0xff && iMarker != EOF);
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if (iMarker == EOF) {
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return EOF;
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}
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do {
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iMarker = iNextByte(pFile);
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} while (iMarker == 0xff);
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} while (iMarker == 0x00); /* repeat if ff/00 */
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return iMarker;
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} /* end of iNextMarker */
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/*
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* bExamineJPEG - Examine a JPEG header
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*
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* return TRUE if successful, otherwise FALSE
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*/
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static BOOL
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bExamineJPEG(FILE *pFile, imagedata_type *pImg)
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{
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size_t tLength;
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int iMarker, iIndex;
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char appstring[10];
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BOOL bSOFDone;
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tLength = 0;
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bSOFDone = FALSE;
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/* process JPEG markers */
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while (!bSOFDone && (iMarker = iNextMarker(pFile)) != (int)M_EOI) {
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switch (iMarker) {
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case EOF:
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DBG_MSG("Error: unexpected end of JPEG file");
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return FALSE;
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/* The following are not officially supported in PostScript level 2 */
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case M_SOF2:
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case M_SOF3:
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case M_SOF5:
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case M_SOF6:
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case M_SOF7:
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case M_SOF9:
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case M_SOF10:
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case M_SOF11:
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case M_SOF13:
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case M_SOF14:
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case M_SOF15:
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DBG_HEX(iMarker);
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return FALSE;
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case M_SOF0:
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case M_SOF1:
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tLength = (size_t)usNextWordBE(pFile);
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pImg->uiBitsPerComponent = (UINT)iNextByte(pFile);
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pImg->iHeight = (int)usNextWordBE(pFile);
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pImg->iWidth = (int)usNextWordBE(pFile);
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pImg->iComponents = iNextByte(pFile);
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bSOFDone = TRUE;
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317 |
break;
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318 |
case M_APP14:
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/*
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320 |
* Check for Adobe application marker. It is known (per Adobe's
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321 |
* TN5116) to contain the string "Adobe" at the start of the
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* APP14 marker.
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*/
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tLength = (size_t)usNextWordBE(pFile);
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325 |
if (tLength < 12) {
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(void)tSkipBytes(pFile, tLength - 2);
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} else {
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for (iIndex = 0; iIndex < 5; iIndex++) {
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appstring[iIndex] =
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(char)iNextByte(pFile);
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331 |
}
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332 |
appstring[5] = '\0';
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333 |
if (STREQ(appstring, "Adobe")) {
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pImg->bAdobe = TRUE;
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335 |
}
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336 |
(void)tSkipBytes(pFile, tLength - 7);
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}
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338 |
break;
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339 |
case M_SOI: /* ignore markers without parameters */
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case M_EOI:
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case M_TEM:
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342 |
case M_RST0:
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343 |
case M_RST1:
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344 |
case M_RST2:
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345 |
case M_RST3:
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346 |
case M_RST4:
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347 |
case M_RST5:
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348 |
case M_RST6:
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349 |
case M_RST7:
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350 |
break;
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351 |
default: /* skip variable length markers */
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|
352 |
tLength = (size_t)usNextWordBE(pFile);
|
|
|
353 |
(void)tSkipBytes(pFile, tLength - 2);
|
|
|
354 |
break;
|
|
|
355 |
}
|
|
|
356 |
}
|
|
|
357 |
|
|
|
358 |
DBG_DEC(pImg->iWidth);
|
|
|
359 |
DBG_DEC(pImg->iHeight);
|
|
|
360 |
DBG_DEC(pImg->uiBitsPerComponent);
|
|
|
361 |
DBG_DEC(pImg->iComponents);
|
|
|
362 |
|
|
|
363 |
/* Do some sanity checks with the parameters */
|
|
|
364 |
if (pImg->iHeight <= 0 ||
|
|
|
365 |
pImg->iWidth <= 0 ||
|
|
|
366 |
pImg->iComponents <= 0) {
|
|
|
367 |
DBG_DEC(pImg->iHeight);
|
|
|
368 |
DBG_DEC(pImg->iWidth);
|
|
|
369 |
DBG_DEC(pImg->iComponents);
|
|
|
370 |
return FALSE;
|
|
|
371 |
}
|
|
|
372 |
|
|
|
373 |
/* Some broken JPEG files have this but they print anyway... */
|
|
|
374 |
if (pImg->iComponents * 3 + 8 != (int)tLength) {
|
|
|
375 |
DBG_MSG("Warning: SOF marker has incorrect length - ignored");
|
|
|
376 |
}
|
|
|
377 |
|
|
|
378 |
if (pImg->uiBitsPerComponent != 8) {
|
|
|
379 |
DBG_DEC(pImg->uiBitsPerComponent);
|
|
|
380 |
DBG_MSG("Not supported in PostScript level 2");
|
|
|
381 |
return FALSE;
|
|
|
382 |
}
|
|
|
383 |
|
|
|
384 |
if (pImg->iComponents != 1 &&
|
|
|
385 |
pImg->iComponents != 3 &&
|
|
|
386 |
pImg->iComponents != 4) {
|
|
|
387 |
DBG_DEC(pImg->iComponents);
|
|
|
388 |
return FALSE;
|
|
|
389 |
}
|
|
|
390 |
|
|
|
391 |
pImg->bColorImage = pImg->iComponents >= 3;
|
|
|
392 |
pImg->iColorsUsed = 0;
|
|
|
393 |
pImg->eCompression = compression_jpeg;
|
|
|
394 |
|
|
|
395 |
return TRUE;
|
|
|
396 |
} /* end of bExamineJPEG */
|
|
|
397 |
|
|
|
398 |
/*
|
|
|
399 |
* bFillPalettePNG - fill the palette part of the imagesdata
|
|
|
400 |
*
|
|
|
401 |
* returns TRUE if sucessful, otherwise FALSE;
|
|
|
402 |
*/
|
|
|
403 |
static BOOL
|
|
|
404 |
bFillPalettePNG(FILE *pFile, imagedata_type *pImg, size_t tLength)
|
|
|
405 |
{
|
|
|
406 |
int iIndex, iEntries;
|
|
|
407 |
|
|
|
408 |
fail(pFile == NULL);
|
|
|
409 |
fail(pImg == NULL);
|
|
|
410 |
|
|
|
411 |
if (pImg->uiBitsPerComponent > 8) {
|
|
|
412 |
/* No palette, image uses more than 256 colors */
|
|
|
413 |
return TRUE;
|
|
|
414 |
}
|
|
|
415 |
|
|
|
416 |
if (!pImg->bColorImage) {
|
|
|
417 |
/* Only color images can have a palette */
|
|
|
418 |
return FALSE;
|
|
|
419 |
}
|
|
|
420 |
|
|
|
421 |
if (tLength % 3 != 0) {
|
|
|
422 |
/* Each palette entry takes three bytes */
|
|
|
423 |
DBG_DEC(tLength);
|
|
|
424 |
return FALSE;
|
|
|
425 |
}
|
|
|
426 |
|
|
|
427 |
iEntries = (int)(tLength / 3);
|
|
|
428 |
DBG_DEC(iEntries);
|
|
|
429 |
pImg->iColorsUsed = 1 << pImg->uiBitsPerComponent;
|
|
|
430 |
DBG_DEC(pImg->iColorsUsed);
|
|
|
431 |
|
|
|
432 |
if (iEntries > 256) {
|
|
|
433 |
DBG_DEC(iEntries);
|
|
|
434 |
return FALSE;
|
|
|
435 |
}
|
|
|
436 |
|
|
|
437 |
for (iIndex = 0; iIndex < iEntries; iIndex++) {
|
|
|
438 |
pImg->aucPalette[iIndex][0] = (UCHAR)iNextByte(pFile);
|
|
|
439 |
pImg->aucPalette[iIndex][1] = (UCHAR)iNextByte(pFile);
|
|
|
440 |
pImg->aucPalette[iIndex][2] = (UCHAR)iNextByte(pFile);
|
|
|
441 |
NO_DBG_PRINT_BLOCK(pImg->aucPalette[iIndex], 3);
|
|
|
442 |
}
|
|
|
443 |
for (;iIndex < pImg->iColorsUsed; iIndex++) {
|
|
|
444 |
pImg->aucPalette[iIndex][0] = 0;
|
|
|
445 |
pImg->aucPalette[iIndex][1] = 0;
|
|
|
446 |
pImg->aucPalette[iIndex][2] = 0;
|
|
|
447 |
}
|
|
|
448 |
|
|
|
449 |
return TRUE;
|
|
|
450 |
} /* end of bFillPalettePNG */
|
|
|
451 |
|
|
|
452 |
/*
|
|
|
453 |
* bExaminePNG - Examine a PNG header
|
|
|
454 |
*
|
|
|
455 |
* return TRUE if successful, otherwise FALSE
|
|
|
456 |
*/
|
|
|
457 |
static BOOL
|
|
|
458 |
bExaminePNG(FILE *pFile, imagedata_type *pImg)
|
|
|
459 |
{
|
|
|
460 |
size_t tLength;
|
|
|
461 |
ULONG ulLong1, ulLong2, ulName;
|
|
|
462 |
int iIndex, iTmp;
|
|
|
463 |
int iCompressionMethod, iFilterMethod, iInterlaceMethod;
|
|
|
464 |
int iColor, iIncrement;
|
|
|
465 |
BOOL bHasPalette, bHasAlpha;
|
|
|
466 |
UCHAR aucBuf[4];
|
|
|
467 |
|
|
|
468 |
/* Check signature */
|
|
|
469 |
ulLong1 = ulNextLongBE(pFile);
|
|
|
470 |
ulLong2 = ulNextLongBE(pFile);
|
|
|
471 |
if (ulLong1 != 0x89504e47UL || ulLong2 != 0x0d0a1a0aUL) {
|
|
|
472 |
DBG_HEX(ulLong1);
|
|
|
473 |
DBG_HEX(ulLong2);
|
|
|
474 |
return FALSE;
|
|
|
475 |
}
|
|
|
476 |
|
|
|
477 |
ulName = 0x00;
|
|
|
478 |
bHasPalette = FALSE;
|
|
|
479 |
|
|
|
480 |
/* Examine chunks */
|
|
|
481 |
while (ulName != PNG_CN_IEND) {
|
|
|
482 |
tLength = (size_t)ulNextLongBE(pFile);
|
|
|
483 |
ulName = 0x00;
|
|
|
484 |
for (iIndex = 0; iIndex < (int)elementsof(aucBuf); iIndex++) {
|
|
|
485 |
aucBuf[iIndex] = (UCHAR)iNextByte(pFile);
|
|
|
486 |
if (!isalpha(aucBuf[iIndex])) {
|
|
|
487 |
DBG_HEX(aucBuf[iIndex]);
|
|
|
488 |
return FALSE;
|
|
|
489 |
}
|
|
|
490 |
ulName <<= 8;
|
|
|
491 |
ulName |= aucBuf[iIndex];
|
|
|
492 |
}
|
|
|
493 |
|
|
|
494 |
switch (ulName) {
|
|
|
495 |
case PNG_CN_IHDR:
|
|
|
496 |
/* Header chunck */
|
|
|
497 |
if (tLength < 13) {
|
|
|
498 |
DBG_DEC(tLength);
|
|
|
499 |
return FALSE;
|
|
|
500 |
}
|
|
|
501 |
pImg->iWidth = (int)ulNextLongBE(pFile);
|
|
|
502 |
pImg->iHeight = (int)ulNextLongBE(pFile);
|
|
|
503 |
pImg->uiBitsPerComponent = (UINT)iNextByte(pFile);
|
|
|
504 |
iTmp = iNextByte(pFile);
|
|
|
505 |
NO_DBG_HEX(iTmp);
|
|
|
506 |
pImg->bColorImage = (iTmp & PNG_CB_COLOR) != 0;
|
|
|
507 |
bHasPalette = (iTmp & PNG_CB_PALETTE) != 0;
|
|
|
508 |
bHasAlpha = (iTmp & PNG_CB_ALPHA) != 0;
|
|
|
509 |
if (bHasPalette && pImg->uiBitsPerComponent > 8) {
|
|
|
510 |
/* This should not happen */
|
|
|
511 |
return FALSE;
|
|
|
512 |
}
|
|
|
513 |
pImg->iComponents =
|
|
|
514 |
(bHasPalette || !pImg->bColorImage) ? 1 : 3;
|
|
|
515 |
if (bHasAlpha) {
|
|
|
516 |
pImg->iComponents++;
|
|
|
517 |
}
|
|
|
518 |
iCompressionMethod = iNextByte(pFile);
|
|
|
519 |
if (iCompressionMethod != 0) {
|
|
|
520 |
DBG_DEC(iCompressionMethod);
|
|
|
521 |
return FALSE;
|
|
|
522 |
}
|
|
|
523 |
iFilterMethod = iNextByte(pFile);
|
|
|
524 |
if (iFilterMethod != 0) {
|
|
|
525 |
DBG_DEC(iFilterMethod);
|
|
|
526 |
return FALSE;
|
|
|
527 |
}
|
|
|
528 |
iInterlaceMethod = iNextByte(pFile);
|
|
|
529 |
if (iInterlaceMethod != 0) {
|
|
|
530 |
DBG_DEC(iInterlaceMethod);
|
|
|
531 |
return FALSE;
|
|
|
532 |
}
|
|
|
533 |
pImg->iColorsUsed = 0;
|
|
|
534 |
(void)tSkipBytes(pFile, tLength - 13 + 4);
|
|
|
535 |
break;
|
|
|
536 |
case PNG_CN_PLTE:
|
|
|
537 |
if (!bHasPalette) {
|
|
|
538 |
return FALSE;
|
|
|
539 |
}
|
|
|
540 |
if (!bFillPalettePNG(pFile, pImg, tLength)) {
|
|
|
541 |
return FALSE;
|
|
|
542 |
}
|
|
|
543 |
(void)tSkipBytes(pFile, 4);
|
|
|
544 |
break;
|
|
|
545 |
default:
|
|
|
546 |
(void)tSkipBytes(pFile, tLength + 4);
|
|
|
547 |
break;
|
|
|
548 |
}
|
|
|
549 |
}
|
|
|
550 |
|
|
|
551 |
DBG_DEC(pImg->iWidth);
|
|
|
552 |
DBG_DEC(pImg->iHeight);
|
|
|
553 |
DBG_DEC(pImg->uiBitsPerComponent);
|
|
|
554 |
DBG_DEC(pImg->iColorsUsed);
|
|
|
555 |
DBG_DEC(pImg->iComponents);
|
|
|
556 |
|
|
|
557 |
/* Do some sanity checks with the parameters */
|
|
|
558 |
if (pImg->iWidth <= 0 || pImg->iHeight <= 0) {
|
|
|
559 |
return FALSE;
|
|
|
560 |
}
|
|
|
561 |
|
|
|
562 |
if (pImg->uiBitsPerComponent != 1 && pImg->uiBitsPerComponent != 2 &&
|
|
|
563 |
pImg->uiBitsPerComponent != 4 && pImg->uiBitsPerComponent != 8 &&
|
|
|
564 |
pImg->uiBitsPerComponent != 16) {
|
|
|
565 |
DBG_DEC(pImg->uiBitsPerComponent);
|
|
|
566 |
return FALSE;
|
|
|
567 |
}
|
|
|
568 |
|
|
|
569 |
if (pImg->iComponents != 1 && pImg->iComponents != 3) {
|
|
|
570 |
/* Not supported */
|
|
|
571 |
DBG_DEC(pImg->iComponents);
|
|
|
572 |
return FALSE;
|
|
|
573 |
}
|
|
|
574 |
|
|
|
575 |
if (pImg->uiBitsPerComponent > 8) {
|
|
|
576 |
/* Not supported */
|
|
|
577 |
DBG_DEC(pImg->uiBitsPerComponent);
|
|
|
578 |
return FALSE;
|
|
|
579 |
}
|
|
|
580 |
|
|
|
581 |
if (pImg->iColorsUsed == 0 &&
|
|
|
582 |
pImg->iComponents == 1 &&
|
|
|
583 |
pImg->uiBitsPerComponent <= 4) {
|
|
|
584 |
/*
|
|
|
585 |
* No palette is supplied, but PostScript needs one in these
|
|
|
586 |
* cases, so we add a default palette here
|
|
|
587 |
*/
|
|
|
588 |
pImg->iColorsUsed = 1 << pImg->uiBitsPerComponent;
|
|
|
589 |
iIncrement = 0xff / (pImg->iColorsUsed - 1);
|
|
|
590 |
for (iIndex = 0, iColor = 0x00;
|
|
|
591 |
iIndex < pImg->iColorsUsed;
|
|
|
592 |
iIndex++, iColor += iIncrement) {
|
|
|
593 |
pImg->aucPalette[iIndex][0] = (UCHAR)iColor;
|
|
|
594 |
pImg->aucPalette[iIndex][1] = (UCHAR)iColor;
|
|
|
595 |
pImg->aucPalette[iIndex][2] = (UCHAR)iColor;
|
|
|
596 |
}
|
|
|
597 |
/* Just to be sure */
|
|
|
598 |
pImg->bColorImage = FALSE;
|
|
|
599 |
}
|
|
|
600 |
|
|
|
601 |
pImg->eCompression = compression_zlib;
|
|
|
602 |
|
|
|
603 |
return TRUE;
|
|
|
604 |
} /* end of bExaminePNG */
|
|
|
605 |
|
|
|
606 |
/*
|
|
|
607 |
* bExamineWMF - Examine a WMF header
|
|
|
608 |
*
|
|
|
609 |
* return TRUE if successful, otherwise FALSE
|
|
|
610 |
*/
|
|
|
611 |
static BOOL
|
|
|
612 |
bExamineWMF(FILE *pFile, imagedata_type *pImg)
|
|
|
613 |
{
|
|
|
614 |
ULONG ulFileSize, ulMaxRecord, ulMagic;
|
|
|
615 |
USHORT usType, usHeaderSize, usVersion, usNoObjects;
|
|
|
616 |
|
|
|
617 |
usType = usNextWord(pFile);
|
|
|
618 |
usHeaderSize = usNextWord(pFile);
|
|
|
619 |
ulMagic = ((ULONG)usHeaderSize << 16) | (ULONG)usType;
|
|
|
620 |
usVersion = usNextWord(pFile);
|
|
|
621 |
ulFileSize = ulNextLong(pFile);
|
|
|
622 |
usNoObjects = usNextWord(pFile);
|
|
|
623 |
ulMaxRecord = ulNextLong(pFile);
|
|
|
624 |
|
|
|
625 |
DBG_HEX(ulMagic);
|
|
|
626 |
DBG_DEC(usType);
|
|
|
627 |
DBG_DEC(usHeaderSize);
|
|
|
628 |
DBG_HEX(usVersion);
|
|
|
629 |
DBG_DEC(ulFileSize);
|
|
|
630 |
DBG_DEC(usNoObjects);
|
|
|
631 |
DBG_DEC(ulMaxRecord);
|
|
|
632 |
|
|
|
633 |
return FALSE;
|
|
|
634 |
} /* end of bExamineWMF */
|
|
|
635 |
|
|
|
636 |
#if !defined(__riscos)
|
|
|
637 |
/*
|
|
|
638 |
* vImage2Papersize - make sure the image fits on the paper
|
|
|
639 |
*
|
|
|
640 |
* This function should not be needed if Word would do a proper job
|
|
|
641 |
*/
|
|
|
642 |
static void
|
|
|
643 |
vImage2Papersize(imagedata_type *pImg)
|
|
|
644 |
{
|
|
|
645 |
static int iNetPageHeight = -1;
|
|
|
646 |
static int iNetPageWidth = -1;
|
|
|
647 |
options_type tOptions;
|
|
|
648 |
double dVerFactor, dHorFactor, dFactor;
|
|
|
649 |
|
|
|
650 |
DBG_MSG("vImage2Papersize");
|
|
|
651 |
|
|
|
652 |
fail(pImg == NULL);
|
|
|
653 |
|
|
|
654 |
if (iNetPageHeight < 0 || iNetPageWidth < 0) {
|
|
|
655 |
/* Get the page dimensions from the options */
|
|
|
656 |
vGetOptions(&tOptions);
|
|
|
657 |
/* Add 999 to err on the save side */
|
|
|
658 |
iNetPageHeight = tOptions.iPageHeight -
|
|
|
659 |
(lDrawUnits2MilliPoints(
|
|
|
660 |
PS_TOP_MARGIN + PS_BOTTOM_MARGIN) +
|
|
|
661 |
999) / 1000;
|
|
|
662 |
iNetPageWidth = tOptions.iPageWidth -
|
|
|
663 |
(lDrawUnits2MilliPoints(
|
|
|
664 |
PS_LEFT_MARGIN + PS_RIGHT_MARGIN) +
|
|
|
665 |
999) / 1000;
|
|
|
666 |
DBG_DEC(iNetPageHeight);
|
|
|
667 |
DBG_DEC(iNetPageWidth);
|
|
|
668 |
}
|
|
|
669 |
|
|
|
670 |
if (pImg->iVerSizeScaled < iNetPageHeight &&
|
|
|
671 |
pImg->iHorSizeScaled < iNetPageWidth) {
|
|
|
672 |
/* The image fits on the paper */
|
|
|
673 |
return;
|
|
|
674 |
}
|
|
|
675 |
|
|
|
676 |
dVerFactor = (double)iNetPageHeight / (double)pImg->iVerSizeScaled;
|
|
|
677 |
dHorFactor = (double)iNetPageWidth / (double)pImg->iHorSizeScaled;
|
|
|
678 |
dFactor = min(dVerFactor, dHorFactor);
|
|
|
679 |
DBG_FLT(dFactor);
|
|
|
680 |
/* Round down, just to be on the save side */
|
|
|
681 |
pImg->iVerSizeScaled = (int)(pImg->iVerSizeScaled * dFactor);
|
|
|
682 |
pImg->iHorSizeScaled = (int)(pImg->iHorSizeScaled * dFactor);
|
|
|
683 |
} /* end of vImage2Papersize */
|
|
|
684 |
#endif /* !__riscos */
|
|
|
685 |
|
|
|
686 |
/*
|
|
|
687 |
* tFind6Image - skip until the image is found
|
|
|
688 |
*
|
|
|
689 |
* Find the image in Word 6/7 files
|
|
|
690 |
*
|
|
|
691 |
* returns the new position when a image is found, otherwise -1
|
|
|
692 |
*/
|
|
|
693 |
static size_t
|
|
|
694 |
tFind6Image(FILE *pFile, size_t tPosition, size_t tLength,
|
|
|
695 |
imagetype_enum *peImageType)
|
|
|
696 |
{
|
|
|
697 |
ULONG ulMarker;
|
|
|
698 |
size_t tRecordLength, tToSkip;
|
|
|
699 |
USHORT usMarker;
|
|
|
700 |
|
|
|
701 |
fail(pFile == NULL);
|
|
|
702 |
fail(peImageType == NULL);
|
|
|
703 |
|
|
|
704 |
*peImageType = imagetype_is_unknown;
|
|
|
705 |
if (tPosition + 18 >= tLength) {
|
|
|
706 |
return (size_t)-1;
|
|
|
707 |
}
|
|
|
708 |
|
|
|
709 |
ulMarker = ulNextLong(pFile);
|
|
|
710 |
if (ulMarker != 0x00090001) {
|
|
|
711 |
DBG_HEX(ulMarker);
|
|
|
712 |
return (size_t)-1;
|
|
|
713 |
}
|
|
|
714 |
usMarker = usNextWord(pFile);
|
|
|
715 |
if (usMarker != 0x0300) {
|
|
|
716 |
DBG_HEX(usMarker);
|
|
|
717 |
return (size_t)-1;
|
|
|
718 |
}
|
|
|
719 |
(void)tSkipBytes(pFile, 10);
|
|
|
720 |
usMarker = usNextWord(pFile);
|
|
|
721 |
if (usMarker != 0x0000) {
|
|
|
722 |
DBG_HEX(usMarker);
|
|
|
723 |
return (size_t)-1;
|
|
|
724 |
}
|
|
|
725 |
tPosition += 18;
|
|
|
726 |
|
|
|
727 |
while (tPosition + 6 <= tLength) {
|
|
|
728 |
tRecordLength = (size_t)ulNextLong(pFile);
|
|
|
729 |
usMarker = usNextWord(pFile);
|
|
|
730 |
tPosition += 6;
|
|
|
731 |
NO_DBG_DEC(tRecordLength);
|
|
|
732 |
NO_DBG_HEX(usMarker);
|
|
|
733 |
switch (usMarker) {
|
|
|
734 |
case 0x0000:
|
|
|
735 |
DBG_HEX(ulGetDataOffset(pFile));
|
|
|
736 |
return (size_t)-1;
|
|
|
737 |
case 0x0b41:
|
|
|
738 |
DBG_MSG("DIB");
|
|
|
739 |
*peImageType = imagetype_is_dib;
|
|
|
740 |
tPosition += tSkipBytes(pFile, 20);
|
|
|
741 |
return tPosition;
|
|
|
742 |
case 0x0f43:
|
|
|
743 |
DBG_MSG("DIB");
|
|
|
744 |
*peImageType = imagetype_is_dib;
|
|
|
745 |
tPosition += tSkipBytes(pFile, 22);
|
|
|
746 |
return tPosition;
|
|
|
747 |
default:
|
|
|
748 |
if (tRecordLength < 3) {
|
|
|
749 |
break;
|
|
|
750 |
}
|
|
|
751 |
if (tRecordLength > SIZE_T_MAX / 2) {
|
|
|
752 |
/*
|
|
|
753 |
* No need to compute the number of bytes
|
|
|
754 |
* to skip
|
|
|
755 |
*/
|
|
|
756 |
DBG_DEC(tRecordLength);
|
|
|
757 |
DBG_HEX(tRecordLength);
|
|
|
758 |
DBG_FIXME();
|
|
|
759 |
return (size_t)-1;
|
|
|
760 |
}
|
|
|
761 |
tToSkip = tRecordLength * 2 - 6;
|
|
|
762 |
if (tToSkip > tLength - tPosition) {
|
|
|
763 |
/* You can't skip this number of bytes */
|
|
|
764 |
DBG_DEC(tToSkip);
|
|
|
765 |
DBG_DEC(tLength - tPosition);
|
|
|
766 |
return (size_t)-1;
|
|
|
767 |
}
|
|
|
768 |
tPosition += tSkipBytes(pFile, tToSkip);
|
|
|
769 |
break;
|
|
|
770 |
}
|
|
|
771 |
}
|
|
|
772 |
|
|
|
773 |
return (size_t)-1;
|
|
|
774 |
} /* end of tFind6Image */
|
|
|
775 |
|
|
|
776 |
/*
|
|
|
777 |
* tFind8Image - skip until the image is found
|
|
|
778 |
*
|
|
|
779 |
* Find the image in Word 8/9/10 files
|
|
|
780 |
*
|
|
|
781 |
* returns the new position when a image is found, otherwise -1
|
|
|
782 |
*/
|
|
|
783 |
static size_t
|
|
|
784 |
tFind8Image(FILE *pFile, size_t tPosition, size_t tLength,
|
|
|
785 |
imagetype_enum *peImageType)
|
|
|
786 |
{
|
|
|
787 |
size_t tRecordLength, tNameLen;
|
|
|
788 |
USHORT usRecordVersion, usRecordType, usRecordInstance;
|
|
|
789 |
USHORT usTmp;
|
|
|
790 |
|
|
|
791 |
fail(pFile == NULL);
|
|
|
792 |
fail(peImageType == NULL);
|
|
|
793 |
|
|
|
794 |
*peImageType = imagetype_is_unknown;
|
|
|
795 |
while (tPosition + 8 <= tLength) {
|
|
|
796 |
usTmp = usNextWord(pFile);
|
|
|
797 |
usRecordVersion = usTmp & 0x000f;
|
|
|
798 |
usRecordInstance = usTmp >> 4;
|
|
|
799 |
usRecordType = usNextWord(pFile);
|
|
|
800 |
tRecordLength = (size_t)ulNextLong(pFile);
|
|
|
801 |
tPosition += 8;
|
|
|
802 |
NO_DBG_HEX(usRecordVersion);
|
|
|
803 |
NO_DBG_HEX(usRecordInstance);
|
|
|
804 |
NO_DBG_HEX(usRecordType);
|
|
|
805 |
NO_DBG_DEC(tRecordLength);
|
|
|
806 |
switch (usRecordType) {
|
|
|
807 |
case 0xf000: case 0xf001: case 0xf002: case 0xf003:
|
|
|
808 |
case 0xf004: case 0xf005:
|
|
|
809 |
break;
|
|
|
810 |
case 0xf007:
|
|
|
811 |
tPosition += tSkipBytes(pFile, 33);
|
|
|
812 |
tNameLen = (size_t)iNextByte(pFile);
|
|
|
813 |
tPosition++;
|
|
|
814 |
DBG_DEC_C(tNameLen != 0, tNameLen);
|
|
|
815 |
tPosition += tSkipBytes(pFile, 2 + tNameLen * 2);
|
|
|
816 |
break;
|
|
|
817 |
case 0xf008:
|
|
|
818 |
tPosition += tSkipBytes(pFile, 8);
|
|
|
819 |
break;
|
|
|
820 |
case 0xf009:
|
|
|
821 |
tPosition += tSkipBytes(pFile, 16);
|
|
|
822 |
break;
|
|
|
823 |
case 0xf006: case 0xf00a: case 0xf00b: case 0xf00d:
|
|
|
824 |
case 0xf00e: case 0xf00f: case 0xf010: case 0xf011:
|
|
|
825 |
case 0xf122:
|
|
|
826 |
tPosition += tSkipBytes(pFile, tRecordLength);
|
|
|
827 |
break;
|
|
|
828 |
case 0xf01a:
|
|
|
829 |
DBG_MSG("EMF");
|
|
|
830 |
*peImageType = imagetype_is_emf;
|
|
|
831 |
tPosition += tSkipBytes(pFile, 50);
|
|
|
832 |
if ((usRecordInstance ^ MSOBI_EMF) == 1) {
|
|
|
833 |
tPosition += tSkipBytes(pFile, 16);
|
|
|
834 |
}
|
|
|
835 |
return tPosition;
|
|
|
836 |
case 0xf01b:
|
|
|
837 |
DBG_MSG("WMF");
|
|
|
838 |
*peImageType = imagetype_is_wmf;
|
|
|
839 |
tPosition += tSkipBytes(pFile, 50);
|
|
|
840 |
if ((usRecordInstance ^ MSOBI_WMF) == 1) {
|
|
|
841 |
tPosition += tSkipBytes(pFile, 16);
|
|
|
842 |
}
|
|
|
843 |
return tPosition;
|
|
|
844 |
case 0xf01c:
|
|
|
845 |
DBG_MSG("PICT");
|
|
|
846 |
*peImageType = imagetype_is_pict;
|
|
|
847 |
tPosition += tSkipBytes(pFile, 50);
|
|
|
848 |
if ((usRecordInstance ^ MSOBI_PICT) == 1) {
|
|
|
849 |
tPosition += tSkipBytes(pFile, 16);
|
|
|
850 |
}
|
|
|
851 |
return tPosition;
|
|
|
852 |
case 0xf01d:
|
|
|
853 |
DBG_MSG("JPEG");
|
|
|
854 |
*peImageType = imagetype_is_jpeg;
|
|
|
855 |
tPosition += tSkipBytes(pFile, 17);
|
|
|
856 |
if ((usRecordInstance ^ MSOBI_JPEG) == 1) {
|
|
|
857 |
tPosition += tSkipBytes(pFile, 16);
|
|
|
858 |
}
|
|
|
859 |
return tPosition;
|
|
|
860 |
case 0xf01e:
|
|
|
861 |
DBG_MSG("PNG");
|
|
|
862 |
*peImageType = imagetype_is_png;
|
|
|
863 |
tPosition += tSkipBytes(pFile, 17);
|
|
|
864 |
if ((usRecordInstance ^ MSOBI_PNG) == 1) {
|
|
|
865 |
tPosition += tSkipBytes(pFile, 16);
|
|
|
866 |
}
|
|
|
867 |
return tPosition;
|
|
|
868 |
case 0xf01f:
|
|
|
869 |
DBG_MSG("DIB");
|
|
|
870 |
/* DIB is a BMP minus its 14 byte header */
|
|
|
871 |
*peImageType = imagetype_is_dib;
|
|
|
872 |
tPosition += tSkipBytes(pFile, 17);
|
|
|
873 |
if ((usRecordInstance ^ MSOBI_DIB) == 1) {
|
|
|
874 |
tPosition += tSkipBytes(pFile, 16);
|
|
|
875 |
}
|
|
|
876 |
return tPosition;
|
|
|
877 |
case 0xf00c:
|
|
|
878 |
default:
|
|
|
879 |
DBG_HEX(usRecordType);
|
|
|
880 |
DBG_DEC_C(tRecordLength % 4 != 0, tRecordLength);
|
|
|
881 |
DBG_FIXME();
|
|
|
882 |
return (size_t)-1;
|
|
|
883 |
}
|
|
|
884 |
}
|
|
|
885 |
|
|
|
886 |
return (size_t)-1;
|
|
|
887 |
} /* end of tFind8Image */
|
|
|
888 |
|
|
|
889 |
/*
|
|
|
890 |
* eExamineImage - Examine the image
|
|
|
891 |
*
|
|
|
892 |
* Returns an indication of the amount of information found
|
|
|
893 |
*/
|
|
|
894 |
image_info_enum
|
|
|
895 |
eExamineImage(FILE *pFile, ULONG ulFileOffsetImage, imagedata_type *pImg)
|
|
|
896 |
{
|
|
|
897 |
long lTmp;
|
|
|
898 |
size_t tWordHeaderLen, tLength, tPos;
|
|
|
899 |
int iType, iHorSize, iVerSize;
|
|
|
900 |
USHORT usHorScalingFactor, usVerScalingFactor;
|
|
|
901 |
|
|
|
902 |
if (ulFileOffsetImage == FC_INVALID) {
|
|
|
903 |
return image_no_information;
|
|
|
904 |
}
|
|
|
905 |
DBG_HEX(ulFileOffsetImage);
|
|
|
906 |
|
|
|
907 |
if (!bSetDataOffset(pFile, ulFileOffsetImage)) {
|
|
|
908 |
return image_no_information;
|
|
|
909 |
}
|
|
|
910 |
|
|
|
911 |
tLength = (size_t)ulNextLong(pFile);
|
|
|
912 |
DBG_DEC(tLength);
|
|
|
913 |
if (tLength < 46) {
|
|
|
914 |
/* Smaller than the smallest known header */
|
|
|
915 |
DBG_FIXME();
|
|
|
916 |
return image_no_information;
|
|
|
917 |
}
|
|
|
918 |
tWordHeaderLen = (size_t)usNextWord(pFile);
|
|
|
919 |
DBG_DEC(tWordHeaderLen);
|
|
|
920 |
fail(tWordHeaderLen != 46 &&
|
|
|
921 |
tWordHeaderLen != 58 &&
|
|
|
922 |
tWordHeaderLen != 68);
|
|
|
923 |
|
|
|
924 |
if (tLength < tWordHeaderLen) {
|
|
|
925 |
/* Smaller than the current header */
|
|
|
926 |
return image_no_information;
|
|
|
927 |
}
|
|
|
928 |
iType = (int)usNextWord(pFile);
|
|
|
929 |
DBG_DEC(iType);
|
|
|
930 |
(void)tSkipBytes(pFile, 28 - 8);
|
|
|
931 |
|
|
|
932 |
lTmp = lTwips2MilliPoints(usNextWord(pFile));
|
|
|
933 |
iHorSize = (int)(lTmp / 1000);
|
|
|
934 |
if (lTmp % 1000 != 0) {
|
|
|
935 |
iHorSize++;
|
|
|
936 |
}
|
|
|
937 |
DBG_DEC(iHorSize);
|
|
|
938 |
lTmp = lTwips2MilliPoints(usNextWord(pFile));
|
|
|
939 |
iVerSize = (int)(lTmp / 1000);
|
|
|
940 |
if (lTmp % 1000 != 0) {
|
|
|
941 |
iVerSize++;
|
|
|
942 |
}
|
|
|
943 |
DBG_DEC(iVerSize);
|
|
|
944 |
|
|
|
945 |
usHorScalingFactor = usNextWord(pFile);
|
|
|
946 |
DBG_DEC(usHorScalingFactor);
|
|
|
947 |
usVerScalingFactor = usNextWord(pFile);
|
|
|
948 |
DBG_DEC(usVerScalingFactor);
|
|
|
949 |
|
|
|
950 |
/* Sanity checks */
|
|
|
951 |
lTmp = (long)iHorSize * (long)usHorScalingFactor;
|
|
|
952 |
if (lTmp < 2835) {
|
|
|
953 |
/* This image would be less than 1 millimeter wide */
|
|
|
954 |
DBG_DEC(lTmp);
|
|
|
955 |
return image_no_information;
|
|
|
956 |
}
|
|
|
957 |
lTmp = (long)iVerSize * (long)usVerScalingFactor;
|
|
|
958 |
if (lTmp < 2835) {
|
|
|
959 |
/* This image would be less than 1 millimeter high */
|
|
|
960 |
DBG_DEC(lTmp);
|
|
|
961 |
return image_no_information;
|
|
|
962 |
}
|
|
|
963 |
|
|
|
964 |
/* Skip the rest of the header */
|
|
|
965 |
(void)tSkipBytes(pFile, tWordHeaderLen - 36);
|
|
|
966 |
tPos = tWordHeaderLen;
|
|
|
967 |
|
|
|
968 |
(void)memset(pImg, 0, sizeof(*pImg));
|
|
|
969 |
|
|
|
970 |
switch (iType) {
|
|
|
971 |
case 7:
|
|
|
972 |
case 8:
|
|
|
973 |
tPos = tFind6Image(pFile, tPos, tLength, &pImg->eImageType);
|
|
|
974 |
if (tPos == (size_t)-1) {
|
|
|
975 |
/* No image found */
|
|
|
976 |
return image_no_information;
|
|
|
977 |
}
|
|
|
978 |
DBG_HEX(tPos);
|
|
|
979 |
break;
|
|
|
980 |
case 94: /* Word 6/7, no image just a pathname */
|
|
|
981 |
pImg->eImageType = imagetype_is_external;
|
|
|
982 |
DBG_HEX(ulFileOffsetImage + tPos);
|
|
|
983 |
break;
|
|
|
984 |
case 100:
|
|
|
985 |
tPos = tFind8Image(pFile, tPos, tLength, &pImg->eImageType);
|
|
|
986 |
if (tPos == (size_t)-1) {
|
|
|
987 |
/* No image found */
|
|
|
988 |
return image_no_information;
|
|
|
989 |
}
|
|
|
990 |
DBG_HEX(tPos);
|
|
|
991 |
break;
|
|
|
992 |
case 102: /* Word 8/9/10, no image just a pathname or URL */
|
|
|
993 |
pImg->eImageType = imagetype_is_external;
|
|
|
994 |
DBG_HEX(ulFileOffsetImage + tPos);
|
|
|
995 |
break;
|
|
|
996 |
default:
|
|
|
997 |
DBG_DEC(iType);
|
|
|
998 |
DBG_HEX(ulFileOffsetImage + tPos);
|
|
|
999 |
DBG_FIXME();
|
|
|
1000 |
return image_no_information;
|
|
|
1001 |
}
|
|
|
1002 |
|
|
|
1003 |
/* Minimal information is now available */
|
|
|
1004 |
pImg->tLength = tLength;
|
|
|
1005 |
pImg->tPosition = tPos;
|
|
|
1006 |
pImg->iHorSizeScaled =
|
|
|
1007 |
(int)(((long)iHorSize * (long)usHorScalingFactor + 500) / 1000);
|
|
|
1008 |
pImg->iVerSizeScaled =
|
|
|
1009 |
(int)(((long)iVerSize * (long)usVerScalingFactor + 500) / 1000);
|
|
|
1010 |
#if !defined(__riscos)
|
|
|
1011 |
vImage2Papersize(pImg);
|
|
|
1012 |
#endif /* !__riscos */
|
|
|
1013 |
|
|
|
1014 |
/* Image type specific examinations */
|
|
|
1015 |
switch (pImg->eImageType) {
|
|
|
1016 |
case imagetype_is_dib:
|
|
|
1017 |
if (bExamineDIB(pFile, pImg)) {
|
|
|
1018 |
return image_full_information;
|
|
|
1019 |
}
|
|
|
1020 |
return image_minimal_information;
|
|
|
1021 |
case imagetype_is_jpeg:
|
|
|
1022 |
if (bExamineJPEG(pFile, pImg)) {
|
|
|
1023 |
return image_full_information;
|
|
|
1024 |
}
|
|
|
1025 |
return image_minimal_information;
|
|
|
1026 |
case imagetype_is_png:
|
|
|
1027 |
if (bExaminePNG(pFile, pImg)) {
|
|
|
1028 |
return image_full_information;
|
|
|
1029 |
}
|
|
|
1030 |
return image_minimal_information;
|
|
|
1031 |
case imagetype_is_wmf:
|
|
|
1032 |
if (bExamineWMF(pFile, pImg)) {
|
|
|
1033 |
return image_full_information;
|
|
|
1034 |
}
|
|
|
1035 |
return image_minimal_information;
|
|
|
1036 |
case imagetype_is_emf:
|
|
|
1037 |
case imagetype_is_pict:
|
|
|
1038 |
case imagetype_is_external:
|
|
|
1039 |
return image_minimal_information;
|
|
|
1040 |
case imagetype_is_unknown:
|
|
|
1041 |
default:
|
|
|
1042 |
return image_no_information;
|
|
|
1043 |
}
|
|
|
1044 |
} /* end of eExamineImage */
|