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* Unpublished-- rights reserved under the copyright laws of the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