162 lines
6.4 KiB
C++
162 lines
6.4 KiB
C++
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/*
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** Command & Conquer Red Alert(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/***************************************************************************
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** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S **
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***************************************************************************
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* *
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* Project Name : Temp timer for 32bit lib *
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* *
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* File Name : TIMERINI.CPP *
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* *
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* Programmer : Scott K. Bowen *
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* *
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* Start Date : July 6, 1994 *
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* *
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* Last Update : July 6, 1994 [SKB] *
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* *
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*-------------------------------------------------------------------------*
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* Functions: *
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* Init_Timer_System -- Initialize the WW timer system. *
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* Remove_Timer_System -- Removes the timer system. *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#include <wwstd.h>
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#include <descmgmt.h>
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#include "timer.H"
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////// Defines /////////////////////////////////////
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#define COPY_FROM_MEM TRUE
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/////////////////////////////////////////////////////////////////////////////////
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////////////////////////////// timera.asm functions//////////////////////////////
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern VOID *Get_RM_Timer_Address(VOID);
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extern ULONG Get_RM_Timer_Size(VOID);
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extern BOOL Install_Timer_Interrupt(VOID *bin_ptr, UINT rm_size, UINT freq, BOOL partial);
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extern BOOL Remove_Timer_Interrupt(VOID);
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#ifdef __cplusplus
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}
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#endif
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////// Global Data /////////////////////////////////////
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BOOL TimerSystemOn = FALSE;
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// Global timers that the library or user can count on existing.
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TimerClass TickCount(BT_SYSTEM);
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CountDownTimerClass CountDown(BT_SYSTEM, 0);
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////// Code ////////////////////////////////////////
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/***************************************************************************
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* INIT_TIMER_SYSTEM -- Initialize the WW timer system. *
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* *
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* *
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* INPUT: UINT : user timer frequency. *
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* *
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* OUTPUT: BOOL success? *
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* *
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* WARNINGS: *
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* *
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* HISTORY: *
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* 07/06/1994 SKB : Created. *
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*=========================================================================*/
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BOOL Init_Timer_System(UINT freq, BOOL partial)
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{
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VOID *binary;
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UINT binsize;
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BOOL success;
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#if COPY_FROM_MEM
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// The binary is stuffed in an ASM module.
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// Get it's address and size.
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binary = Get_RM_Timer_Address();
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binsize = Get_RM_Timer_Size();
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#else
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WORD fd;
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VOID *mem;
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//
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// Open binary image of real mode timer code.
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// get its size and allocate a temp block for it.
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// Copy the file into the block and close the file
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//
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fd = Open("timer.ibn", READ);
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binsize = File_Size(fd);
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binary = Alloc(binsize, MEM_NORMAL);
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Read_File(fd, binary, binsize);
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Close_File(fd);
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#endif // COPY_FROM_MEM
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// If no size, size too big or no address, then it's a bug.
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if (!binsize || (binsize > 0xFFFFL) || !binary) {
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return (FALSE);
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}
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TimerSystemOn = success = Install_Timer_Interrupt(binary, binsize, freq, partial);
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#if !COPY_FROM_MEM
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// Free up the temp pointer.
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Free(mem);
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#endif // !COPY_FROM_MEM
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if (success) {
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if (!partial)
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TickCount.Start();
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return (TRUE);
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} else {
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Remove_Timer_Interrupt();
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return (FALSE);
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}
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}
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/***************************************************************************
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* REMOVE_TIMER_SYSTEM -- Removes the timer system. *
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* *
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* *
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* INPUT: NONE. *
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* *
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* OUTPUT: BOOL was it removed successfuly *
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* *
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* WARNINGS: *
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* *
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* HISTORY: *
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* 07/06/1994 SKB : Created. *
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*=========================================================================*/
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BOOL Remove_Timer_System(VOID)
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{
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TimerSystemOn = FALSE;
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return(Remove_Timer_Interrupt());
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}
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