mirror of
https://github.com/elliotnunn/supermario.git
synced 2024-11-22 04:31:30 +00:00
157 lines
4.0 KiB
C
157 lines
4.0 KiB
C
/*
|
|
File: VDigUtils.c
|
|
|
|
Contains: Utilities for the Video Digitizer Component.
|
|
|
|
Written by: Fernando Urbina
|
|
|
|
Copyright: © 1993 by Apple Computer, Inc. All rights reserved.
|
|
|
|
Change History (most recent first):
|
|
|
|
<1> 6/3/93 kc first checked in
|
|
<LW7> 4/14/93 fau Got rid of obsolete routines and made Enable/DisableVideo in to
|
|
do essentially nothing.
|
|
<LW6> 4/5/93 fau Changed the csCode to use the ones defined in DepVideo.h.
|
|
<LW5> 4/4/93 fau When checking the GetVidIn csMode, made sure to look at only bit
|
|
0 by anding with 0x01.
|
|
<LW4> 2/22/93 fau Changed the GetMaxVidMode routine to use the new
|
|
GetCompOutCapabilities call to the driver that will return the
|
|
maximum mode with video in. This fixes a bug when dynamically
|
|
switching video-in when the graphics bpp is too high.
|
|
<LW3> 2/17/93 fau Backed out the previous change because the driver reverted to
|
|
its original mode.
|
|
<LW2> 2/16/93 fau Updated the call to cscGetVideoIn to reflect the new interface
|
|
in the driver. (The enabled bit is bit 1, not bit 0).
|
|
<1> 1/4/93 fau first checked in
|
|
|
|
*/
|
|
|
|
#include <Palettes.h>
|
|
#include <Video.h>
|
|
#include <RomDefs.h>
|
|
#include <Slots.h>
|
|
#include <Video.h>
|
|
#include <DepVideo.h>
|
|
#include <ToolUtils.h>
|
|
#include <Devices.h>
|
|
#include "Cyclone.h"
|
|
|
|
/********************************************************************
|
|
*
|
|
* P R O T O T Y P E S
|
|
*
|
|
********************************************************************/
|
|
Boolean IsItRegisterRoutine();
|
|
unsigned long GetBaseAddress();
|
|
pascal OSErr EnableVideoIn(GDHandle gdh);
|
|
pascal OSErr DisableVideoIn(GDHandle gdh);
|
|
|
|
/********************************************************************
|
|
*
|
|
* IsItRegisterRoutine: Will return true if the "Doing an open component"
|
|
* for registering in the slot 0 PRAM vendor5 byte
|
|
* is true
|
|
*
|
|
********************************************************************/
|
|
Boolean IsItRegisterRoutine()
|
|
{
|
|
SpBlock aSpBlock;
|
|
OSErr result;
|
|
char spBytes[8];
|
|
Boolean itsRegistering = false;
|
|
|
|
aSpBlock.spSlot = 0;
|
|
aSpBlock.spResult = (long) spBytes;
|
|
result = SReadPRAMRec(&aSpBlock);
|
|
|
|
if (result == noErr)
|
|
{
|
|
/* Is bit 6 ON */
|
|
itsRegistering = (spBytes[6] &= (0x01 << spOpenComponent)) == 0 ? false : true ;
|
|
}
|
|
|
|
return (itsRegistering);
|
|
}
|
|
|
|
/********************************************************************
|
|
*
|
|
*
|
|
*
|
|
********************************************************************/
|
|
pascal OSErr EnableVideoIn(GDHandle gdh)
|
|
{
|
|
|
|
OSErr retstat = noErr;
|
|
VDFlag myFlag;
|
|
CntrlParam pb;
|
|
|
|
/* Check to see if video-in is not enabled */
|
|
/* Setup the Control Parameter block */
|
|
|
|
pb.ioCRefNum = (**gdh).gdRefNum;
|
|
pb.ioCompletion = nil;
|
|
pb.ioNamePtr = nil;
|
|
pb.ioVRefNum = 0;
|
|
pb.csCode = cscGetVideoIn;
|
|
* (Ptr *) &pb.csParam[0] = (Ptr) (&myFlag);
|
|
|
|
retstat = PBStatus((ParmBlkPtr) &pb,false);
|
|
|
|
return (retstat);
|
|
}
|
|
|
|
/********************************************************************
|
|
*
|
|
*
|
|
*
|
|
********************************************************************/
|
|
pascal OSErr DisableVideoIn(GDHandle gdh)
|
|
{
|
|
OSErr retstat = noErr;
|
|
VDFlag myFlag;
|
|
CntrlParam pb;
|
|
|
|
/* Check to see if video-in is not enabled */
|
|
/* Setup the Control Parameter block */
|
|
|
|
pb.ioCRefNum = (**gdh).gdRefNum;
|
|
pb.ioCompletion = nil;
|
|
pb.ioNamePtr = nil;
|
|
pb.ioVRefNum = 0;
|
|
pb.csCode = cscGetVideoIn;
|
|
* (Ptr *) &pb.csParam[0] = (Ptr) (&myFlag);
|
|
|
|
retstat = PBStatus((ParmBlkPtr) &pb,false);
|
|
|
|
return (retstat);
|
|
}
|
|
|
|
/********************************************************************
|
|
*
|
|
*
|
|
*
|
|
********************************************************************/
|
|
unsigned long GetBaseAddress()
|
|
{
|
|
SpBlock mySpBlock;
|
|
OSErr myError;
|
|
|
|
mySpBlock.spParamData = 1;
|
|
mySpBlock.spCategory = catDisplay;
|
|
mySpBlock.spCType = typeVideo;
|
|
mySpBlock.spDrvrSW = 0;
|
|
mySpBlock.spDrvrHW = 0;
|
|
mySpBlock.spTBMask = 3;
|
|
mySpBlock.spSlot = 0;
|
|
mySpBlock.spID = 0;
|
|
mySpBlock.spExtDev = 0;
|
|
|
|
myError = SNextTypeSRsrc(&mySpBlock);
|
|
myError = SFindDevBase(&mySpBlock);
|
|
|
|
return( (unsigned long) mySpBlock.spResult );
|
|
}
|
|
|
|
|
|
|