| 1 | /* $Id: cvtbitmap.cpp,v 1.2 1999-09-04 12:41:45 sandervl Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * PE2LX bitmap conversion code
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| 5 | *
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| 6 | * Copyright 1998 Sander van Leeuwen (sandervl@xs4all.nl)
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| 7 | * Copyright 1998 Knut St. Osmundsen
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| 8 | *
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| 9 | *
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| 10 | * Project Odin Software License can be found in LICENSE.TXT
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| 11 | *
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| 12 | */
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| 13 | #define INCL_GPIBITMAPS
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| 14 | #define INCL_BITMAPFILEFORMAT
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| 15 | #define INCL_DOSFILEMGR /* File Manager values */
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| 16 | #define INCL_DOSERRORS /* DOS Error values */
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| 17 | #define INCL_DOSPROCESS /* DOS Process values */
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| 18 | #define INCL_DOSMISC /* DOS Miscellanous values */
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| 19 | #define INCL_WIN
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| 20 | #include <os2wrap.h>
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| 21 | #include <stdio.h>
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| 22 | #include <string.h>
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| 23 | #include <stdlib.h>
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| 24 | #include <string.h>
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| 25 | #include <assert.h>
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| 26 | #include <win32type.h>
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| 27 | #include <winicon.h>
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| 28 | #include <misc.h>
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| 29 | #include "cvtresource.h"
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| 30 |
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| 31 | #define __StackToFlat(a) a
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| 32 | #define ltassert(a)
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| 33 | #define MAXPTR
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| 34 | #define MINPTR
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| 35 |
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| 36 | /**********/
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| 37 | /* Macros */
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| 38 | /**********/
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| 39 | #define Need1BitTo4BitConvertWIN(pBHdr) \
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| 40 | ( \
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| 41 | pBHdr->biBitCount == 1 \
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| 42 | && !( \
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| 43 | (((PULONG)pBHdr)[10] == 0x00000000 && (pBHdr->biClrUsed == 1 || ((PULONG)pBHdr)[11] == 0x00ffffff)) /*black and white*/ \
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| 44 | || (((PULONG)pBHdr)[10] == 0x00ffffff && (pBHdr->biClrUsed == 1 || ((PULONG)pBHdr)[11] == 0x00000000)) /*white and black*/ \
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| 45 | ) \
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| 46 | )
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| 47 |
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| 48 | #define Need1BitTo4BitConvertOS2(pBIH) \
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| 49 | ( \
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| 50 | pBIH->cBitCount == 1 \
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| 51 | && !( \
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| 52 | (((PULONG)pBIH)[3] == 0x0ff00000 && ((PUSHORT)pBIH)[8] == 0xffff) /*black and white*/ \
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| 53 | || (((PULONG)pBIH)[3] == 0x00ffffff && ((PUSHORT)pBIH)[8] == 0x0000) /*white and black*/ \
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| 54 | ) \
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| 55 | )
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| 56 |
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| 57 | static ULONG Convert1BitTo4Bit(void *pNewData, PBYTE pbOldData, LONG cx, LONG cy);
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| 58 | static ULONG QueryPaletteSize(WINBITMAPINFOHEADER *pBHdr);
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| 59 | static ULONG QueryPaletteSize(BITMAPINFOHEADER *pBHdr);
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| 60 | static ULONG QueryPaletteSize(BITMAPINFOHEADER2 *pBHdr);
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| 61 | static ULONG CalcBitmapSize(ULONG cBits, LONG cx, LONG cy);
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| 62 |
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| 63 | //******************************************************************************
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| 64 | //******************************************************************************
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| 65 | void *ConvertBitmap(WINBITMAPINFOHEADER *pBHdr, ULONG ulSize, PULONG pulSize)
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| 66 | {
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| 67 | ltassert((ULONG)pBHdr > MINPTR && (ULONG)pBHdr+ulSize < MAXPTR);
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| 68 |
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| 69 | switch (pBHdr->biSize)
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| 70 | {
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| 71 | /**************************************/
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| 72 | /* Windows v3.0 bitmap */
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| 73 | /**************************************/
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| 74 | case sizeof(WINBITMAPINFOHEADER):
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| 75 | {//convert to OS/2 v2.0 bitmap
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| 76 | PBITMAPFILEHEADER2 pBFH;
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| 77 | ULONG cbPalette;
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| 78 | ULONG cbImage;
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| 79 | BOOL fConvert1Bit = FALSE;
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| 80 |
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| 81 | dprintf(("Windows v3.0 bitmap"));
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| 82 | dprintf((" Size: %d", pBHdr->biSizeImage));
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| 83 | dprintf((" Width: %d", pBHdr->biWidth));
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| 84 | dprintf((" Height: %d", pBHdr->biHeight));
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| 85 | dprintf((" Bitcount: %d", pBHdr->biBitCount));
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| 86 | dprintf((" Compress: %d", pBHdr->biCompression));
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| 87 |
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| 88 | fConvert1Bit = Need1BitTo4BitConvertWIN(pBHdr);
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| 89 |
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| 90 | cbPalette = QueryPaletteSize(pBHdr);
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| 91 | ltassert(cbPalette != -1);
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| 92 | dprintf((" PaletteSize: %d", cbPalette));
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| 93 |
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| 94 | /* calc bitmap size and allocate */
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| 95 | #ifdef BITFIELDS
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| 96 | if (pBHdr->biCompression == BI_RGB || pBHdr->biCompression == BI_BITFIELDS)
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| 97 | #else
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| 98 | if (pBHdr->biCompression == BI_RGB)
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| 99 | #endif
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| 100 | {
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| 101 | /* recalc for non-compressed images */
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| 102 | if (fConvert1Bit)
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| 103 | cbImage = CalcBitmapSize(4, pBHdr->biWidth, pBHdr->biHeight);
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| 104 | else cbImage = CalcBitmapSize(pBHdr->biBitCount, pBHdr->biWidth, pBHdr->biHeight);
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| 105 | }
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| 106 | else
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| 107 | {
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| 108 | ltassert(!fConvert1Bit);
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| 109 | cbImage = pBHdr->biSizeImage;
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| 110 | if (cbImage == 0)
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| 111 | cbImage = ulSize - sizeof(WINBITMAPINFOHEADER) + sizeof(BITMAPFILEHEADER2);
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| 112 | }
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| 113 | ltassert(cbImage != 0);
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| 114 |
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| 115 | //bounds checking
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| 116 | if (!fConvert1Bit)
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| 117 | { /* brackets must not be removed! */
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| 118 | ltassert(cbImage <= ulSize - sizeof(WINBITMAPINFOHEADER) - cbPalette);
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| 119 | }
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| 120 | else ltassert(CalcBitmapSize(pBHdr->biBitCount, pBHdr->biWidth, pBHdr->biHeight) <= ulSize - sizeof(WINBITMAPINFOHEADER) - cbPalette);
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| 121 |
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| 122 | *pulSize = sizeof(BITMAPFILEHEADER2) + cbPalette + cbImage;
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| 123 |
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| 124 | dprintf((" Debug: Size(recalced): %d", cbImage));
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| 125 | dprintf((" Debug: Size in : %d", ulSize));
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| 126 | dprintf((" Debug: Size out : %D", *pulSize));
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| 127 |
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| 128 | pBFH = (PBITMAPFILEHEADER2)malloc(*pulSize + 0x10);//allocate more than we need!
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| 129 | ltassert(pBFH);
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| 130 |
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| 131 | /* file header */
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| 132 | pBFH->usType = BFT_BMAP;
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| 133 | pBFH->cbSize = sizeof(BITMAPFILEHEADER2);
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| 134 | pBFH->xHotspot = 0;
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| 135 | pBFH->yHotspot = 0;
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| 136 | pBFH->offBits = sizeof(BITMAPFILEHEADER2) + cbPalette;
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| 137 |
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| 138 | /* info header*/
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| 139 | memset((void*)&pBFH->bmp2, 0, sizeof(BITMAPINFOHEADER2));
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| 140 | memcpy((void*)&pBFH->bmp2, (void*)pBHdr, sizeof(WINBITMAPINFOHEADER));
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| 141 | pBFH->bmp2.cbFix = sizeof(BITMAPINFOHEADER2);
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| 142 |
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| 143 | /* bitfields */
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| 144 | if (pBFH->bmp2.ulCompression == BI_BITFIELDS)
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| 145 | {//TODO: Identical except for BI_BITFIELDS (3L) type! - cast a warning note
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| 146 | /* KSO: I need files to test it on */
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| 147 | #ifndef BITFIELDS
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| 148 | dprintf(("Warning: ulCompression = BI_BITFIELDS"));
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| 149 | pBFH->bmp2.ulCompression = BCA_UNCOMP; //since BI_BITFIELDS == BCA_RLE24
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| 150 | #else
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| 151 | #error("Sorry, BITFIELDS are not implmented yet.")
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| 152 | /* generate new palette */
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| 153 | /* convert bitmap data */
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| 154 | /* update fileheader */
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| 155 | #endif //#ifdef BITFIELDS
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| 156 | }
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| 157 |
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| 158 | /* palette */
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| 159 | if (cbPalette > 0)
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| 160 | memcpy((void*)((ULONG)pBFH + sizeof(BITMAPFILEHEADER2)), (void*)((ULONG)pBHdr + sizeof(WINBITMAPINFOHEADER)), cbPalette);
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| 161 |
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| 162 | /* bitmap data */
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| 163 | if (fConvert1Bit)
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| 164 | {
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| 165 | /* convert */
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| 166 | Convert1BitTo4Bit(
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| 167 | (PVOID)((ULONG)pBFH + sizeof(BITMAPFILEHEADER2) + cbPalette),
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| 168 | (PBYTE)((ULONG)pBHdr + sizeof(WINBITMAPINFOHEADER)+ cbPalette),
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| 169 | pBFH->bmp2.cx,
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| 170 | pBFH->bmp2.cy
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| 171 | );
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| 172 |
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| 173 | /* update some infoheader fields */
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| 174 | pBFH->bmp2.cBitCount = 4;
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| 175 | if (pBFH->bmp2.cclrUsed == 0)
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| 176 | pBFH->bmp2.cclrUsed = 2;
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| 177 | if (pBFH->bmp2.cbImage != 0)
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| 178 | pBFH->bmp2.cbImage = cbImage;
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| 179 | }
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| 180 | else memcpy((void*)((ULONG)pBFH + sizeof(BITMAPFILEHEADER2) + cbPalette), (void*)((ULONG)pBHdr + sizeof(WINBITMAPINFOHEADER) + cbPalette), cbImage);
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| 181 |
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| 182 | return pBFH;
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| 183 | }
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| 184 |
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| 185 | /**************************************/
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| 186 | /* Windows v4.0 bitmap */
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| 187 | /**************************************/
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| 188 | case sizeof(BITMAPV4HEADER):
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| 189 | {//convert to OS/2 v2.0 bitmap - some other day when I find the specs.
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| 190 | dprintf(("Windows v4.0 bitmap"));
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| 191 | dprintf((" Not supported yet!"));
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| 192 | ltassert(FALSE && "Windows v4.0 bitmap");
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| 193 | break;
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| 194 | }
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| 195 |
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| 196 | /**************************************/
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| 197 | /* OS/2 v1.x bitmap */
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| 198 | /**************************************/
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| 199 | case sizeof(BITMAPINFOHEADER):
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| 200 | {//no conversion needed - only build fileheader
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| 201 | PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER)pBHdr;
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| 202 | PBITMAPFILEHEADER pBFH ;
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| 203 | BOOL fConvert1Bit;
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| 204 | ULONG cbPalette;
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| 205 |
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| 206 | cbPalette = QueryPaletteSize(pBIH);
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| 207 | ltassert(cbPalette != -1);
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| 208 | *pulSize = ulSize + sizeof(BITMAPFILEHEADER) - sizeof(BITMAPINFOHEADER);
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| 209 |
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| 210 | fConvert1Bit = Need1BitTo4BitConvertOS2(pBIH);
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| 211 | if (fConvert1Bit)
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| 212 | *pulSize += (ulSize - cbPalette - sizeof(BITMAPINFOHEADER))*3 + 14 * sizeof(RGB);
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| 213 |
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| 214 | pBFH = (PBITMAPFILEHEADER)malloc(*pulSize);
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| 215 | ltassert(pBFH != NULL);
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| 216 |
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| 217 | if (fConvert1Bit)
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| 218 | {
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| 219 | /* copy infoheader */
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| 220 | memcpy(&pBFH->bmp, pBIH, sizeof(pBFH->bmp));
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| 221 | memset((void*)((ULONG)pBFH + sizeof(*pBFH)), 0, 16*sizeof(RGB));
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| 222 | memcpy((void*)((ULONG)pBFH + sizeof(*pBFH)), (void*)((ULONG)pBIH + sizeof(*pBIH)), 2*sizeof(RGB));
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| 223 | *pulSize = Convert1BitTo4Bit(
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| 224 | (PVOID)((ULONG)pBFH + sizeof(BITMAPFILEHEADER) + 16 * sizeof(RGB)),
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| 225 | (PBYTE)((ULONG)pBHdr + sizeof(BITMAPINFOHEADER) + cbPalette),
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| 226 | pBFH->bmp.cx,
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| 227 | pBFH->bmp.cy
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| 228 | );
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| 229 |
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| 230 | /* update infoheader */
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| 231 | pBFH->bmp.cBitCount = 4;
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| 232 | cbPalette = 16 * sizeof(RGB); //used in fileheader
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| 233 | }
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| 234 | else
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| 235 | {
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| 236 | /* copy entire bitmap from infoheader */
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| 237 | memcpy(&pBFH->bmp, pBIH, ulSize);
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| 238 | *pulSize = CalcBitmapSize(pBIH->cBitCount, pBIH->cx, pBIH->cy);
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| 239 | ltassert(*pulSize != 0);
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| 240 | }
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| 241 | *pulSize += sizeof(BITMAPFILEHEADER) + cbPalette;
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| 242 |
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| 243 | /* fileheader */
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| 244 | pBFH->usType = BFT_BMAP;
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| 245 | pBFH->cbSize = sizeof(BITMAPFILEHEADER);
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| 246 | pBFH->xHotspot = 0;
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| 247 | pBFH->yHotspot = 0;
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| 248 | pBFH->offBits = sizeof(BITMAPFILEHEADER) + cbPalette;
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| 249 |
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| 250 | /* log info */
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| 251 | dprintf(("OS/2 v1.x bitmap"));
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| 252 | dprintf((" Width: %d", pBFH->bmp.cx));
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| 253 | dprintf((" Height: %d", pBFH->bmp.cy));
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| 254 | dprintf((" Bitcount: %d", pBFH->bmp.cBitCount));
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| 255 | dprintf((" PaletteSize: %d", cbPalette));
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| 256 | dprintf(("debug 1"));
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| 257 |
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| 258 | return (void*)pBFH;
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| 259 | }
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| 260 |
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| 261 | /**************************************/
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| 262 | /* OS/2 v2.0 bitmap - highly unlikely!*/
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| 263 | /**************************************/
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| 264 | case sizeof(BITMAPINFOHEADER2):
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| 265 | {//no conversion needed - only build fileheader
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| 266 | PBITMAPFILEHEADER2 pBFH;
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| 267 |
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| 268 | pBFH = (PBITMAPFILEHEADER2)malloc(ulSize + sizeof(BITMAPFILEHEADER2) - sizeof(BITMAPINFOHEADER2));
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| 269 | ltassert(pBFH != NULL);
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| 270 |
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| 271 | memcpy(&pBFH->bmp2, pBHdr, ulSize);
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| 272 |
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| 273 | pBFH->usType = BFT_BMAP;
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| 274 | pBFH->cbSize = sizeof(BITMAPFILEHEADER2);
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| 275 | pBFH->xHotspot = 0;
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| 276 | pBFH->yHotspot = 0;
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| 277 | pBFH->offBits = sizeof(BITMAPFILEHEADER2);
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| 278 |
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| 279 | dprintf(("OS/2 v2.0 bitmap"));
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| 280 | dprintf((" Width: %d", pBFH->bmp2.cx));
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| 281 | dprintf((" Height: %d", pBFH->bmp2.cy));
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| 282 | dprintf((" Bitcount: %d", pBFH->bmp2.cBitCount));
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| 283 |
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| 284 | if (pBFH->bmp2.cBitCount < 24)
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| 285 | pBFH->offBits += ( 1, pBFH->bmp2.cBitCount ) * sizeof(RGB2);
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| 286 | else pBFH->offBits += pBFH->bmp2.cclrUsed;
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| 287 |
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| 288 | return pBFH;
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| 289 | }
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| 290 |
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| 291 |
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| 292 | /**************************************/
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| 293 | /* Unknown */
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| 294 | /**************************************/
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| 295 | default: //fail
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| 296 | dprintf(("ConvertBitmap - default - fail!"));
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| 297 | return NULL;
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| 298 | }
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| 299 |
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| 300 | return NULL;
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| 301 | }
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| 302 | //******************************************************************************
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| 303 | //******************************************************************************
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| 304 | /* Converting 1 bit bitmaps to 4 bit bitmaps
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| 305 | */
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| 306 | //******************************************************************************
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| 307 | //******************************************************************************
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| 308 | static ULONG Convert1BitTo4Bit(void *pNewData, PBYTE pbOldData, LONG cx, LONG cy)
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| 309 | {
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| 310 | PBYTE pbNewData = (PBYTE)pNewData;
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| 311 |
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| 312 | dprintf((" 1->4 convert"));
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| 313 |
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| 314 | //negative height
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| 315 | cy = cy < 0 ? -cy : cy;
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| 316 |
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| 317 | *pbNewData = 0;
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| 318 | for (int y = 0; y < cy; y++)
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| 319 | {//outer loop: lines
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| 320 | int x;
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| 321 |
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| 322 | for (x = 0; x < cx; x++)
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| 323 | {//inner loop: scanline
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| 324 | int iBit = 7-(x%8);
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| 325 | *pbNewData |= (((0x1, iBit) & *pbOldData) >> iBit), (iBit%2)*4;
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| 326 |
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| 327 | if (x % 2)
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| 328 | {
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| 329 | pbNewData++;
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| 330 | *pbNewData = 0;
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| 331 | }
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| 332 |
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| 333 | if ((x+1) % 8 == 0)
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| 334 | pbOldData++;
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| 335 | }
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| 336 |
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| 337 | //next byte
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| 338 | if (x % 2)
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| 339 | {
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| 340 | pbNewData++;
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| 341 | *pbNewData = 0;
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| 342 | }
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| 343 | if ((x+1) % 8 == 0)
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| 344 | pbOldData++;
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| 345 |
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| 346 | //aligning
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| 347 | for (int a = ((x+1)/2)%4; a < 4 && a != 0; a++)
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| 348 | {
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| 349 | pbNewData++;
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| 350 | *pbNewData = 0;
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| 351 | }
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| 352 | for (int b = ((x+7)/8)%4; b < 4 && b != 0; b++)
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| 353 | pbOldData++;
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| 354 | }
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| 355 |
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| 356 | return (int)pbNewData - (int)pNewData;
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| 357 | }
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| 358 | //******************************************************************************
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| 359 | //******************************************************************************
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| 360 | static ULONG QueryPaletteSize(WINBITMAPINFOHEADER *pBHdr)
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| 361 | {
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| 362 | ULONG cbPalette;
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| 363 |
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| 364 | switch (pBHdr->biBitCount)
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| 365 | {
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| 366 | case 1:
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| 367 | case 4:
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| 368 | case 8:
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| 369 | /* Windows Bitmaps seems to have a full palette even when it don't use all of it - OS/2 does not...
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| 370 | Good for us, the fileheader holds the offset to the bitmap data - which means that this not should be a problem, luckily. */
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| 371 | //cbPalette = ((pBHdr->biClrUsed != 0) ? pBHdr->biClrUsed : 1, pBHdr->biBitCount) * sizeof(RGB2);
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| 372 | cbPalette = (1, pBHdr->biBitCount) * sizeof(RGB2);
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| 373 | break;
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| 374 |
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| 375 | case 16:
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| 376 | case 32:
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| 377 | #ifdef BITFIELDS
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| 378 | if (pBHdr->biCompression == BI_BITFIELDS)
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| 379 | {
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| 380 | cbPalette = 3* sizeof(DWORD);
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| 381 | break;
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| 382 | }
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| 383 | #endif
|
|---|
| 384 | case 24:
|
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| 385 | /* docs have it that there may be a palette used for optmizing processing of 16, 24 and 32 bits bitmaps */
|
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| 386 | /* the size of the palette is contained in biClrUsed - don't know if it stored as number of colors or as bytes... */
|
|---|
| 387 | cbPalette = pBHdr->biClrUsed; //size in bytes or in (*sizeof(RGB2))?
|
|---|
| 388 | break;
|
|---|
| 389 |
|
|---|
| 390 | default:
|
|---|
| 391 | dprintf(("QueryPaletteSize: error pBHdr->biBitCount = %d", pBHdr->biBitCount));
|
|---|
| 392 | cbPalette = -1;
|
|---|
| 393 | }
|
|---|
| 394 |
|
|---|
| 395 | return cbPalette;
|
|---|
| 396 | }
|
|---|
| 397 | //******************************************************************************
|
|---|
| 398 | //******************************************************************************
|
|---|
| 399 | static ULONG QueryPaletteSize(BITMAPINFOHEADER *pBHdr)
|
|---|
| 400 | {
|
|---|
| 401 | ULONG cbPalette;
|
|---|
| 402 |
|
|---|
| 403 | switch (pBHdr->cBitCount)
|
|---|
| 404 | {
|
|---|
| 405 | case 1:
|
|---|
| 406 | case 4:
|
|---|
| 407 | case 8:
|
|---|
| 408 | cbPalette = (1, pBHdr->cBitCount) * sizeof(RGB);
|
|---|
| 409 | break;
|
|---|
| 410 |
|
|---|
| 411 | case 16:
|
|---|
| 412 | case 24:
|
|---|
| 413 | case 32:
|
|---|
| 414 | cbPalette = 0;
|
|---|
| 415 | break;
|
|---|
| 416 |
|
|---|
| 417 | default:
|
|---|
| 418 | dprintf(("QueryPaletteSize: error pBHdr->biBitCount = %d", pBHdr->cBitCount));
|
|---|
| 419 | cbPalette = -1;
|
|---|
| 420 | }
|
|---|
| 421 |
|
|---|
| 422 | return cbPalette;
|
|---|
| 423 | }
|
|---|
| 424 | //******************************************************************************
|
|---|
| 425 | //******************************************************************************
|
|---|
| 426 | static ULONG QueryPaletteSize(BITMAPINFOHEADER2 *pBHdr)
|
|---|
| 427 | {
|
|---|
| 428 | ULONG cbPalette;
|
|---|
| 429 |
|
|---|
| 430 | switch (pBHdr->cBitCount)
|
|---|
| 431 | {
|
|---|
| 432 | case 1:
|
|---|
| 433 | case 4:
|
|---|
| 434 | case 8:
|
|---|
| 435 | cbPalette = ((pBHdr->cclrUsed != 0) ? pBHdr->cclrUsed : 1, pBHdr->cBitCount) * sizeof(RGB2);
|
|---|
| 436 | //cbPalette = (1, pBHdr->cBitCount) * sizeof(RGB2);
|
|---|
| 437 | break;
|
|---|
| 438 |
|
|---|
| 439 | case 16:
|
|---|
| 440 | case 32:
|
|---|
| 441 | case 24:
|
|---|
| 442 | /* docs have it that there may be a palette used for optmizing processing of 16, 24 and 32 bits bitmaps */
|
|---|
| 443 | /* the size of the palette is contained in biClrUsed - don't know if it stored as number of colors or as bytes... */
|
|---|
| 444 | cbPalette = pBHdr->cclrUsed; //size in bytes or in (*sizeof(RGB2))?
|
|---|
| 445 | break;
|
|---|
| 446 |
|
|---|
| 447 | default:
|
|---|
| 448 | dprintf(("QueryPaletteSize: error pBHdr->biBitCount = %d", pBHdr->cBitCount));
|
|---|
| 449 | cbPalette = -1;
|
|---|
| 450 | }
|
|---|
| 451 |
|
|---|
| 452 | return cbPalette;
|
|---|
| 453 | }
|
|---|
| 454 | //******************************************************************************
|
|---|
| 455 | //******************************************************************************
|
|---|
| 456 | static ULONG CalcBitmapSize(ULONG cBits, LONG cx, LONG cy)
|
|---|
| 457 | {
|
|---|
| 458 | ULONG alignment;
|
|---|
| 459 | ULONG factor;
|
|---|
| 460 | BOOL flag = TRUE; //true: '*' false: '/'
|
|---|
| 461 |
|
|---|
| 462 | cy = cy < 0 ? -cy : cy;
|
|---|
| 463 |
|
|---|
| 464 | switch(cBits)
|
|---|
| 465 | {
|
|---|
| 466 | case 1:
|
|---|
| 467 | factor = 8;
|
|---|
| 468 | flag = FALSE;
|
|---|
| 469 | break;
|
|---|
| 470 |
|
|---|
| 471 | case 4:
|
|---|
| 472 | factor = 2;
|
|---|
| 473 | flag = FALSE;
|
|---|
| 474 | break;
|
|---|
| 475 |
|
|---|
| 476 | case 8:
|
|---|
| 477 | factor = 1;
|
|---|
| 478 | break;
|
|---|
| 479 |
|
|---|
| 480 | case 16:
|
|---|
| 481 | factor = 2;
|
|---|
| 482 | break;
|
|---|
| 483 |
|
|---|
| 484 | case 24:
|
|---|
| 485 | factor = 3;
|
|---|
| 486 | break;
|
|---|
| 487 |
|
|---|
| 488 | case 32:
|
|---|
| 489 | return cx*cy;
|
|---|
| 490 |
|
|---|
| 491 | default:
|
|---|
| 492 | return 0;
|
|---|
| 493 | }
|
|---|
| 494 |
|
|---|
| 495 | if (flag)
|
|---|
| 496 | alignment = (cx = (cx*factor)) % 4;
|
|---|
| 497 | else
|
|---|
| 498 | alignment = (cx = ((cx+factor-1)/factor)) % 4;
|
|---|
| 499 |
|
|---|
| 500 | if (alignment != 0)
|
|---|
| 501 | cx += 4 - alignment;
|
|---|
| 502 |
|
|---|
| 503 | return cx*cy;
|
|---|
| 504 | }
|
|---|
| 505 | //******************************************************************************
|
|---|
| 506 | //******************************************************************************
|
|---|
| 507 | ULONG QueryConvertedBitmapSize(WINBITMAPINFOHEADER *pBHdr, ULONG ulSize)
|
|---|
| 508 | {
|
|---|
| 509 | ULONG retSize;
|
|---|
| 510 | ltassert((ULONG)pBHdr > MINPTR && (ULONG)pBHdr+ulSize < MAXPTR);
|
|---|
| 511 |
|
|---|
| 512 | switch (pBHdr->biSize)
|
|---|
| 513 | {
|
|---|
| 514 | /**************************************/
|
|---|
| 515 | /* Windows v3.0 bitmap */
|
|---|
| 516 | /**************************************/
|
|---|
| 517 | case sizeof(WINBITMAPINFOHEADER):
|
|---|
| 518 | {//convert to OS/2 v2.0 bitmap
|
|---|
| 519 | #ifdef BITFIELDS
|
|---|
| 520 | if (pBHdr->biCompression == BI_RGB || pBHdr->biCompression == BI_BITFIELDS)
|
|---|
| 521 | #else
|
|---|
| 522 | if (pBHdr->biCompression == BI_RGB)
|
|---|
| 523 | #endif
|
|---|
| 524 | {
|
|---|
| 525 | if (Need1BitTo4BitConvertWIN(pBHdr))
|
|---|
| 526 | retSize = CalcBitmapSize(4, pBHdr->biWidth, pBHdr->biHeight);
|
|---|
| 527 | else retSize = CalcBitmapSize(pBHdr->biBitCount, pBHdr->biWidth, pBHdr->biHeight);
|
|---|
| 528 | }
|
|---|
| 529 | else
|
|---|
| 530 | {
|
|---|
| 531 | retSize = pBHdr->biSizeImage;
|
|---|
| 532 | if (retSize == 0)
|
|---|
| 533 | retSize = ulSize - sizeof(WINBITMAPINFOHEADER) + sizeof(BITMAPFILEHEADER2);
|
|---|
| 534 | }
|
|---|
| 535 | ltassert(retSize != 0);
|
|---|
| 536 |
|
|---|
| 537 | ULONG a = QueryPaletteSize(pBHdr);
|
|---|
| 538 | ltassert(a != -1);
|
|---|
| 539 | retSize += sizeof(BITMAPFILEHEADER2) + a;
|
|---|
| 540 | break;
|
|---|
| 541 | }
|
|---|
| 542 |
|
|---|
| 543 | /**************************************/
|
|---|
| 544 | /* Windows v4.0 bitmap */
|
|---|
| 545 | /**************************************/
|
|---|
| 546 | case sizeof(BITMAPV4HEADER):
|
|---|
| 547 | {//convert to OS/2 v2.0 bitmap - some other day when I find the specs.
|
|---|
| 548 | ltassert(FALSE && "Windows v4.0 bitmap");
|
|---|
| 549 | break;
|
|---|
| 550 | }
|
|---|
| 551 |
|
|---|
| 552 | /**************************************/
|
|---|
| 553 | /* OS/2 v1.x bitmap */
|
|---|
| 554 | /**************************************/
|
|---|
| 555 | case sizeof(BITMAPINFOHEADER):
|
|---|
| 556 | {//no conversion needed - only build fileheader
|
|---|
| 557 | PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER)pBHdr;
|
|---|
| 558 |
|
|---|
| 559 | if (Need1BitTo4BitConvertOS2(pBIH))
|
|---|
| 560 | {
|
|---|
| 561 | retSize = CalcBitmapSize(4, pBIH->cx, pBIH->cy);
|
|---|
| 562 | ltassert(retSize != 0);
|
|---|
| 563 |
|
|---|
| 564 | retSize += sizeof(RGB)*16; //palette
|
|---|
| 565 | }
|
|---|
| 566 | else
|
|---|
| 567 | {
|
|---|
| 568 | retSize = CalcBitmapSize(pBIH->cBitCount, pBIH->cx, pBIH->cy);
|
|---|
| 569 | ltassert(retSize != 0);
|
|---|
| 570 |
|
|---|
| 571 | ULONG a = QueryPaletteSize(pBIH);
|
|---|
| 572 | ltassert(a != -1);
|
|---|
| 573 | retSize += a;
|
|---|
| 574 | }
|
|---|
| 575 |
|
|---|
| 576 | retSize += sizeof(BITMAPFILEHEADER);
|
|---|
| 577 | }
|
|---|
| 578 |
|
|---|
| 579 | /**************************************/
|
|---|
| 580 | /* OS/2 v2.0 bitmap - highly unlikely!*/
|
|---|
| 581 | /**************************************/
|
|---|
| 582 | case sizeof(BITMAPINFOHEADER2):
|
|---|
| 583 | {//no conversion needed - only build fileheader
|
|---|
| 584 | return ulSize + sizeof(BITMAPFILEHEADER2) - sizeof(BITMAPINFOHEADER2);
|
|---|
| 585 | }
|
|---|
| 586 |
|
|---|
| 587 | /**************************************/
|
|---|
| 588 | /* Unknown */
|
|---|
| 589 | /**************************************/
|
|---|
| 590 | default: //fail
|
|---|
| 591 | dprintf(("QueryConvertedBitmapSize - default - fail!"));
|
|---|
| 592 | return 0;
|
|---|
| 593 | }
|
|---|
| 594 |
|
|---|
| 595 | return retSize;
|
|---|
| 596 | }
|
|---|
| 597 | //******************************************************************************
|
|---|
| 598 | //******************************************************************************
|
|---|
