254 lines
8.4 KiB
C
254 lines
8.4 KiB
C
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/*
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* (c) Copyright 1993, Silicon Graphics, Inc.
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* ALL RIGHTS RESERVED
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* Permission to use, copy, modify, and distribute this software for
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* any purpose and without fee is hereby granted, provided that the above
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* copyright notice appear in all copies and that both the copyright notice
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* and this permission notice appear in supporting documentation, and that
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* the name of Silicon Graphics, Inc. not be used in advertising
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* or publicity pertaining to distribution of the software without specific,
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* written prior permission.
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*
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* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
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* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
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* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
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* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
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* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
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* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
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* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
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* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
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* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
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* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* US Government Users Restricted Rights
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* Use, duplication, or disclosure by the Government is subject to
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* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
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* (c)(1)(ii) of the Rights in Technical Data and Computer Software
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* clause at DFARS 252.227-7013 and/or in similar or successor
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* clauses in the FAR or the DOD or NASA FAR Supplement.
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* Unpublished-- rights reserved under the copyright laws of the
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* United States. Contractor/manufacturer is Silicon Graphics,
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* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
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*
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* OpenGL(TM) is a trademark of Silicon Graphics, Inc.
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*/
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#include <windows.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "tk.h"
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#define static
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#define IMAGIC 0x01da
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#define IMAGIC_SWAP 0xda01
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#define SWAP_SHORT_BYTES(x) ((((x) & 0xff) << 8) | (((x) & 0xff00) >> 8))
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#define SWAP_LONG_BYTES(x) (((((x) & 0xff) << 24) | (((x) & 0xff00) << 8)) | \
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((((x) & 0xff0000) >> 8) | (((x) & 0xff000000) >> 24)))
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typedef struct _rawImageRec {
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unsigned short imagic;
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unsigned short type;
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unsigned short dim;
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unsigned short sizeX, sizeY, sizeZ;
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unsigned long min, max;
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unsigned long wasteBytes;
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char name[80];
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unsigned long colorMap;
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HANDLE file;
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unsigned char *tmp, *tmpR, *tmpG, *tmpB;
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unsigned long rleEnd;
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unsigned long *rowStart;
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long *rowSize;
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} rawImageRec;
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static void RawImageClose(rawImageRec *raw);
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static rawImageRec *RawImageOpenAW(char *fileName, BOOL bUnicode)
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{
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rawImageRec *raw;
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unsigned long *rowStart, *rowSize, ulTmp;
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int x;
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DWORD dwBytesRead;
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raw = (rawImageRec *)malloc(sizeof(rawImageRec));
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if (raw == NULL) {
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MESSAGEBOX(GetFocus(), "Out of memory.", "Error", MB_OK);
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return NULL;
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}
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raw->file = bUnicode ? CreateFileW((LPWSTR) fileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0) :
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CreateFileA((LPSTR) fileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
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if (raw->file == INVALID_HANDLE_VALUE) {
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char ach[256];
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bUnicode ? wsprintf(ach, "Failed to open image file %ws.\n", fileName) :
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wsprintf(ach, "Failed to open image file %s.\n", fileName);
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MESSAGEBOX(GetFocus(), ach, "Error", MB_OK);
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free( raw );
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return NULL;
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}
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ReadFile(raw->file, (LPVOID) raw, 12, &dwBytesRead, (LPOVERLAPPED) NULL);
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if (raw->imagic == IMAGIC_SWAP) {
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raw->type = SWAP_SHORT_BYTES(raw->type);
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raw->dim = SWAP_SHORT_BYTES(raw->dim);
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raw->sizeX = SWAP_SHORT_BYTES(raw->sizeX);
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raw->sizeY = SWAP_SHORT_BYTES(raw->sizeY);
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raw->sizeZ = SWAP_SHORT_BYTES(raw->sizeZ);
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} else if (raw->imagic != IMAGIC) {
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// magic number is absent - conclude file is invalid (?)
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MESSAGEBOX(GetFocus(), "Invalid rgb file.", "Error", MB_OK);
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RawImageClose( raw );
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return NULL;
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}
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raw->tmp = (unsigned char *)malloc(raw->sizeX*256);
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raw->tmpR = (unsigned char *)malloc(raw->sizeX*256);
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raw->tmpG = (unsigned char *)malloc(raw->sizeX*256);
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raw->tmpB = (unsigned char *)malloc(raw->sizeX*256);
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if (raw->tmp == NULL || raw->tmpR == NULL || raw->tmpG == NULL ||
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raw->tmpB == NULL) {
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MESSAGEBOX(GetFocus(), "Out of memory.", "Error", MB_OK);
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RawImageClose( raw );
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return NULL;
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}
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if ((raw->type & 0xFF00) == 0x0100) {
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x = raw->sizeY * raw->sizeZ * sizeof(long);
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raw->rowStart = (unsigned long *)malloc(x);
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raw->rowSize = (long *)malloc(x);
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if (raw->rowStart == NULL || raw->rowSize == NULL) {
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MESSAGEBOX(GetFocus(), "Out of memory.", "Error", MB_OK);
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RawImageClose( raw );
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return NULL;
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}
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raw->rleEnd = 512 + (2 * x);
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SetFilePointer(raw->file, 512, NULL, FILE_BEGIN);
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ReadFile(raw->file, (LPVOID) raw->rowStart, x, &dwBytesRead,
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(LPOVERLAPPED) NULL);
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ReadFile(raw->file, (LPVOID) raw->rowSize, x, &dwBytesRead,
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(LPOVERLAPPED) NULL);
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if (raw->imagic == IMAGIC_SWAP) {
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x /= sizeof(long);
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rowStart = raw->rowStart;
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rowSize = raw->rowSize;
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while (x--) {
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ulTmp = *rowStart;
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*rowStart++ = SWAP_LONG_BYTES(ulTmp);
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ulTmp = *rowSize;
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*rowSize++ = SWAP_LONG_BYTES(ulTmp);
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}
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}
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}
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return raw;
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}
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static void RawImageClose(rawImageRec *raw)
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{
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if( !raw )
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return;
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CloseHandle(raw->file);
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if( raw->tmp ) free(raw->tmp);
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if( raw->tmpR ) free(raw->tmpR);
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if( raw->tmpG ) free(raw->tmpG);
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if( raw->tmpB ) free(raw->tmpB);
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free(raw);
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}
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static void RawImageGetRow(rawImageRec *raw, unsigned char *buf, int y, int z)
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{
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unsigned char *iPtr, *oPtr, pixel;
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int count;
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DWORD dwBytesRead;
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if ((raw->type & 0xFF00) == 0x0100) {
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SetFilePointer(raw->file, raw->rowStart[y+z*raw->sizeY], NULL, FILE_BEGIN);
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ReadFile(raw->file, (LPVOID) raw->tmp,
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(unsigned int)raw->rowSize[y+z*raw->sizeY], &dwBytesRead,
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(LPOVERLAPPED) NULL);
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iPtr = raw->tmp;
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oPtr = buf;
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while (1) {
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pixel = *iPtr++;
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count = (int)(pixel & 0x7F);
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if (!count) {
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return;
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}
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if (pixel & 0x80) {
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while (count--) {
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*oPtr++ = *iPtr++;
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}
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} else {
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pixel = *iPtr++;
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while (count--) {
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*oPtr++ = pixel;
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}
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}
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}
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} else {
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SetFilePointer(raw->file, 512+(y*raw->sizeX)+(z*raw->sizeX*raw->sizeY),
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NULL, FILE_BEGIN);
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ReadFile(raw->file, (LPVOID) buf, raw->sizeX, &dwBytesRead,
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(LPOVERLAPPED) NULL);
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}
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}
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static void RawImageGetData(rawImageRec *raw, TK_RGBImageRec *final)
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{
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unsigned char *ptr;
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int i, j;
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final->data = (unsigned char *)malloc((raw->sizeX+1)*(raw->sizeY+1)*4);
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if (final->data == NULL) {
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MESSAGEBOX(GetFocus(), "Out of memory.", "Error", MB_OK);
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return;
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}
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ptr = final->data;
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for (i = 0; i < raw->sizeY; i++) {
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RawImageGetRow(raw, raw->tmpR, i, 0);
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RawImageGetRow(raw, raw->tmpG, i, 1);
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RawImageGetRow(raw, raw->tmpB, i, 2);
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for (j = 0; j < raw->sizeX; j++) {
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*ptr++ = *(raw->tmpR + j);
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*ptr++ = *(raw->tmpG + j);
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*ptr++ = *(raw->tmpB + j);
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}
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}
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}
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TK_RGBImageRec *tkRGBImageLoad(char *fileName)
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{
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return tkRGBImageLoadAW(fileName, FALSE);
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}
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TK_RGBImageRec *tkRGBImageLoadAW(char *fileName, BOOL bUnicode)
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{
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rawImageRec *raw;
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TK_RGBImageRec *final;
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if( !(raw = RawImageOpenAW(fileName, bUnicode)) )
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return NULL;
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final = (TK_RGBImageRec *)malloc(sizeof(TK_RGBImageRec));
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if (final == NULL) {
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MESSAGEBOX(GetFocus(), "Out of memory.", "Error", MB_OK);
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RawImageClose(raw);
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return NULL;
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}
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final->sizeX = raw->sizeX;
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final->sizeY = raw->sizeY;
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RawImageGetData(raw, final);
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RawImageClose(raw);
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return final;
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}
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