ULONG
gw_DevOpen( void )
{
ULONG unit = (ULONG) REG_D0;
ULONG flags = (ULONG) REG_D1;
struct AHIRequest* ioreq = (struct AHIRequest*) REG_A1;
struct AHIBase* AHIBase = (struct AHIBase*) REG_A6;
return DevOpen( unit, flags, ioreq, AHIBase );
}
void grabber( LPSTR lpExtName, int port, HINSTANCE hInstance, HWND hWindow )
{
HWND hWnd;
/*
special conditions:
hand scan interface --
with hand scanners the dialog box has a scan
frame which gets filled with image data. the
dialog box must remain up during reads, so we
use the exported frame_open, cacheptr, and
frame_close to create the frame instead of
device reads. Devopen just returns devcaps,
devstart does everything else.
special willow gs --
the gs board has 4 different buffers, which
contain the following: 0-even pix/even lines,
1-odd pix/even lines, 2-even pix/odd lines,
3-odd pix/odd lines.
each call to devread will layer the data so
that the buffers will be combined correctly.
Device Requirements Byte Decoding:
XXXXXXX1b = need to take over display
XXXXXXX0b = no need to take over display
XXXXXX1Xb = special willow gs read
XXXXXX0Xb = no special read
XXXX00XXb = image depth, special case palette color 8-bit
XXXX01XXb = depth == 1
XXXX10XXb = depth == 2
XXXX11XXb = depth == 3
X1XXXXXXb = special hand scan i/f
X0XXXXXXb = standard grab i/f
XX1XXXXXb = don't free DLL after exit
XX0XXXXXb = free DLL after exit
1XXXXXXXb = putting data from cache to external device
0XXXXXXXb = putting data from external device into cache
*/
BYTE devreq; // device requirements
LPFRAME lpFrame, lpOldFrame;
BYTE depth;
int lncnt,Datatype;
HMODULE hDLL;
LPIMAGE lpImage;
if ( !(hDLL = (HMODULE)LoadGrabberLibrary(lpExtName)) ) {
Message( IDS_EBADDRIVER, NULL );
return;
}
if ( !(lpImage = GetActiveImage()))
lpFrame = NULL;
else
lpFrame = ImgGetBaseEditFrame(lpImage);
lpfnDevName = (DEVNAMEPROC)GetProcAddress(hDLL, MAKEINTRESOURCE(301));
lpfnDevOpen = (DEVOPENPROC)GetProcAddress(hDLL, MAKEINTRESOURCE(302));
lpfnDevCall = (DEVCALLPROC)GetProcAddress(hDLL, MAKEINTRESOURCE(303));
lpfnDevClose = (DEVCLOSEPROC)GetProcAddress(hDLL, MAKEINTRESOURCE(304));
lpfnAcquireProc = (DLGPROC)GetProcAddress(hDLL, MAKEINTRESOURCE(305));
/* get device's intentions -- is this a put to or read from cache */
DevInfo.hInst = hInstance; /* set the data structures */
DevInfo.hPw = hWindow;
DevInfo.bFile_is_open = ( lpFrame != NULL );
if(DevInfo.bFile_is_open)
{
DevInfo.bImg_type = (lpImage->DataType==IDC_SAVECT ? TRUE : FALSE);
/* pass the current filename */
lstrcpy(DevInfo.cfname, lpImage->CurFile);
}
if(!DevOpen(&DevInfo)) {
DevCall(DEV_MSG, (LPTR)&DevMsg);
/* if MsgNo == 0, then user cancelled */
if(DevMsg.MsgNo) {
if(DevMsg.MsgNo > 0) {
Message( DevMsg.MsgNo );
} else {
/* print the driver's message */
Print("%ls", (LPTR)DevMsg.szMsg);
}
}
return;
}
bKeepDLL = (DevInfo.device_caps & 0x20);
devreq = DevInfo.device_caps;
/* doing a put cache to an external device */
if(!(devreq & 0x80)) {
/* fill up the device info data structure */
DevInfo.npix = FrameXSize( lpFrame );
DevInfo.nlin = FrameYSize( lpFrame );
DevInfo.bpl = FrameXSize( lpFrame );
DevInfo.xres = DevInfo.yres = FrameResolution( lpFrame );
DevInfo.bpp = 8;
} else {
DevInfo.port = port; /* set the port for devices which require it */
#ifndef WIN32
DevInfo.vgaaddr = GetA000H(); /* set the VGA buffer address */
#endif
}
/* see if we need to take over display */
if(devreq & 1) {
/* Hide the Cursor */
ShowCursor( FALSE );
/* Create the acquire window: it doesn't have the visable bit set */
AstralDlg( YES, hInstance, hWindow, IDD_GRAB, AcquireProc);
AstralDlgShow( IDD_GRAB );
/* Enter the picture window command processor */
SetCapture( AstralDlgGet( IDD_GRAB ) );
/* set the data structures */
DevInfo.hInst = hInstance;
DevInfo.hPw = AstralDlgGet( IDD_GRAB );
/* call display driver disable */
#ifndef WIN32
PicwinOn((LPSTR)palette1);
#endif
}
if(devreq & 0x40) { // devstart does everything
DevInfo.FpPtr = (LPTRPROC)MakeProcInstance(
(FARPROC)grabber_frame_ptr, DevInfo.hInst);
DevInfo.FoPtr = (LPTRPROC)MakeProcInstance(
(FARPROC)grabber_frame_open, DevInfo.hInst);
DevInfo.FsPtr = (LPTRPROC)MakeProcInstance(
(FARPROC)grabber_frame_set, DevInfo.hInst);
DevInfo.FcPtr = (LPROC)MakeProcInstance(
(FARPROC)grabber_frame_close, DevInfo.hInst);
DevInfo.CcPtr = (LPROC)MakeProcInstance(
(FARPROC)grabber_AstralClockCursor, DevInfo.hInst);
}
DevInfo.bLineArtAsGray = Control.LineArtAsGray;
if(!DevCall(DEV_START, (LPTR)&DevInfo)) { /* if get, fill struct */
back_to_windows(devreq & 1); /* restore if true */
DevCall(DEV_MSG, (LPTR)&DevMsg);
/* if MsgNo == 0, then user cancelled */
if(DevMsg.MsgNo) {
if(DevMsg.MsgNo > 0) {
Message( DevMsg.MsgNo );
} else {
/* print the driver's message */
Print("%ls", (LPTR)DevMsg.szMsg);
}
}
if(devreq & 0x40) { // devstart does everything
FreeProcInstance((FARPROC)DevInfo.FpPtr);
FreeProcInstance((FARPROC)DevInfo.FoPtr);
FreeProcInstance((FARPROC)DevInfo.FsPtr);
FreeProcInstance((FARPROC)DevInfo.FcPtr);
FreeProcInstance((FARPROC)DevInfo.CcPtr);
}
DevClose(); /* close the device */
return;
}
/* DEV_START returned ok, now get or put image data if not done */
if((devreq & 0xc0) == 0x80) { // putting data into the cache with devreads
if(((devreq & 4) == 4) || ((devreq & 0x0c) == 0)) {
depth = 1;
} else {
if((devreq & 8) == 8) {
depth = 2;
} else {
if((devreq & 0x0c) == 0x0c) {
depth = 3;
}
}
}
lpOldFrame = frame_set( NULL );
if(!(lpFrame = FrameOpen(
(FRMDATATYPE)depth,DevInfo.npix,DevInfo.nlin,DevInfo.xres))) {
back_to_windows(devreq & 1); /* Restore if true */
FrameError(IDS_EIMAGEOPEN);
return;
}
frame_set(lpFrame);
if(!(devreq & 2)) {
for ( lncnt=0; lncnt<DevInfo.nlin; lncnt++ ) {
DevData.ImageAddress = FramePointer(lpFrame, 0, lncnt, YES);
if(!DevCall(DEV_READ, (LPTR)&DevData)) {
back_to_windows(devreq & 1); /* Restore if true */
DevCall(DEV_MSG, (LPTR)&DevMsg);
/* if MsgNo == 0, then user cancelled */
if(DevMsg.MsgNo) {
Print("Unable to get data from device");
} else {
DevInfo.nlin = lncnt; // hand scanner, get total lines
}
return;
}
}
} else { /* special willow gs reader */
/* read even bytes, even lines */
for ( lncnt=0; lncnt<DevInfo.nlin; lncnt+=2 ) {
DevData.ImageAddress = FramePointer(lpFrame, 0, lncnt, YES);
if(!DevCall(DEV_READ0, (LPTR)&DevData)) {
back_to_windows(devreq & 1); /* Restore if true */
Print("Unable to get data from device");
return;
}
}
/* read odd bytes, even lines */
for ( lncnt=0; lncnt<DevInfo.nlin; lncnt+=2 ) {
DevData.ImageAddress = FramePointer(lpFrame, 1, lncnt, YES);
if(!DevCall(DEV_READ1, (LPTR)&DevData)) {
back_to_windows(devreq & 1); /* Restore if true */
Print("Unable to get data from device");
return;
}
}
/* read even bytes, odd lines */
for ( lncnt=1; lncnt<DevInfo.nlin; lncnt+=2 ) {
DevData.ImageAddress = FramePointer(lpFrame, 0, lncnt, YES);
if(!DevCall(DEV_READ2, (LPTR)&DevData)) {
back_to_windows(devreq & 1); /* Restore if true */
Print("Unable to get data from device");
return;
}
}
/* read odd bytes, odd lines */
for ( lncnt=1; lncnt<DevInfo.nlin; lncnt+=2 ) {
DevData.ImageAddress = FramePointer(lpFrame, 1, lncnt, YES);
if(!DevCall(DEV_READ3, (LPTR)&DevData)) {
back_to_windows(devreq & 1); /* Restore if true */
Print("Unable to get data from device");
return;
}
}
}
FrameClose( lpOldFrame );
back_to_windows(devreq & 1); /* Restore if true */
if(DevInfo.bpp == 1) {
Datatype = IDC_SAVELA;
} else {
if(DevInfo.bpp == 8) {
Datatype = IDC_SAVECT;
} else {
Datatype = IDC_SAVE24BITCOLOR;
}
}
/* Setup the new image and bring up the new image window */
LPIMAGE lpNewImage = CreateImage(NULL, lpFrame, NULL,
NULL, Control.DefaultFileType, Datatype,
IMG_DOCUMENT, NULL);
if (lpNewImage)
{
if (PictPubApp.OpenDocumentFile((LPSTR)lpNewImage->CurFile,
lpNewImage))
{
/* only version of image is in the cache */
/* so insure user is asked about saving when done */
lpNewImage->fChanged = TRUE;
}
else
DestroyImage(lpNewImage);
}
DevClose(); /* close the device */
} else {
LPIMAGE lpNewImage = NULL;
/* enable the frame created by DevStart */
lpFrame = frame_set(NULL);
/* putting data to external device with DevWrites */
if((devreq & 0xc0) == 0) {
for ( lncnt=0; lncnt<DevInfo.nlin; lncnt++ ) {
AstralClockCursor( lncnt, DevInfo.nlin, NO );
DevData.ImageAddress = FramePointer(lpFrame, 0, lncnt, NO);
if(!DevCall(DEV_WRITE, (LPTR)&DevData)) {
Print("Unable to put data to device");
return;
}
}
} else {
/* devstart has created a frame with image data */
FreeProcInstance((FARPROC)DevInfo.FpPtr);
FreeProcInstance((FARPROC)DevInfo.FoPtr);
FreeProcInstance((FARPROC)DevInfo.FsPtr);
FreeProcInstance((FARPROC)DevInfo.FcPtr);
if(DevInfo.bpp == 1) {
Datatype = IDC_SAVELA;
} else {
if(DevInfo.bpp == 8) {
Datatype = IDC_SAVECT;
} else {
Datatype = IDC_SAVE24BITCOLOR;
}
}
back_to_windows(devreq & 1); /* Restore if true */
/* enable the frame created by DevStart */
lpFrame = frame_set(NULL);
/* DevInfo.nlin returns the actual line count */
if(FrameYSize(lpFrame) <= DevInfo.nlin) {
/* Setup the new image and bring up the new image window */
{
lpNewImage = CreateImage(NULL, lpFrame, NULL,
NULL, Control.DefaultFileType, Datatype,
IMG_DOCUMENT, NULL);
if (lpNewImage)
{
if (!PictPubApp.OpenDocumentFile((LPSTR)lpNewImage->CurFile,
lpNewImage))
{
DestroyImage(lpNewImage);
lpNewImage = NULL;
}
}
}
} else {
/* create a new frame of the right size and copy */
/* the right number of lines to it */
lpOldFrame = FrameOpen(
FrameType(lpFrame),
FrameXSize(lpFrame),
DevInfo.nlin,
FrameResolution(lpFrame));
AstralCursor( IDC_WAIT );
for(lncnt=0; lncnt<DevInfo.nlin; lncnt++) {
FrameCopyLine(lpFrame, lpOldFrame, lncnt);
}
FrameClose(lpFrame);
lpFrame = lpOldFrame;
AstralCursor( NULL );
/* Setup the new image and bring up the new image window */
lpNewImage = CreateImage(NULL, lpFrame, NULL,
NULL, Control.DefaultFileType, Datatype,
IMG_DOCUMENT, NULL);
if (lpNewImage)
{
if (!PictPubApp.OpenDocumentFile((LPSTR)lpNewImage->CurFile,
lpNewImage))
{
DestroyImage(lpNewImage);
lpNewImage = NULL;
}
}
}
/* only version of image is in the cache */
/* so insure user is asked about saving when done */
if (lpNewImage)
lpNewImage->fChanged = TRUE;
DevClose(); /* close the device */
}
}
}
