124 lines
2.8 KiB
C
124 lines
2.8 KiB
C
/*──────────────────────────────────────────────────────────────────────────*
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SAMP.C 386
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(c) Adeline 1993
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*──────────────────────────────────────────────────────────────────────────*/
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#include "\projet\lib386\lib_sys\adeline.h"
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#include "\projet\lib386\lib_sys\lib_sys.h"
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#include "\projet\lib386\lib_samp\lib_wave.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <dos.h>
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#include <i86.h>
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char *WaveError = "Error WaveDriver:";
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extern void *Wave_listfcts;
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extern LONG Wave_Driver_Enable;
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ULONG _InitCard( void *Buffer );
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void _ClearCard( void );
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ULONG _GetBufferSize( void );
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void *BUFFER_DMA;
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void *END_BUFFER_DMA;
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/*-------------------------------------------------------------------------*/
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LONG WaveInitDLL(char *driverpathname)
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{
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char *dll, *drvr;
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//
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// Load driver file
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//
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dll = FILE_read( driverpathname, NULL);
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if (dll==NULL)
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{
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printf("%s Could not load driver '%s'.\n", WaveError, driverpathname );
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return FALSE ;
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}
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drvr=DLL_load(dll,DLLMEM_ALLOC | DLLSRC_MEM,NULL);
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if (drvr==NULL)
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{
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printf("%s Invalid DLL image.\n", WaveError );
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return FALSE ;
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}
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Free(dll);
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Wave_listfcts = *(void **)drvr;
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printf("%s", drvr+4);
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return (Wave_Driver_Enable = TRUE);
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}
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/*-------------------------------------------------------------------------*/
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ULONG InitWave()
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{
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union REGS r;
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struct SREGS sr;
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void far *fh;
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int i;
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int IRQ_number;
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int kilo_buffer;
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ULONG bad_handle[10];
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kilo_buffer = _GetBufferSize();
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/*- Reserve some space for a sound buffer that doesn't cross a 64K page -*/
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// for(i=0; i<10; i++)
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// bad_handle[i]=NULL;
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i = 0;
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do
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{
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if (!(BUFFER_DMA = DosMalloc( kilo_buffer, &bad_handle[i] )))
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{
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BUFFER_DMA = NULL;
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i+=2;
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break;
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}
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END_BUFFER_DMA = (void *)((ULONG)BUFFER_DMA + kilo_buffer - 1);
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if (((LONG)BUFFER_DMA & 0xFFFF0000) != ((LONG)END_BUFFER_DMA & 0xFFFF0000))
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{
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BUFFER_DMA = NULL;
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}
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i++;
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} while ((BUFFER_DMA == NULL) && (i<=10));
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// for(i-=2; i>=0; i--)
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// DosFree( bad_handle[i] );
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if (BUFFER_DMA == NULL)
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{
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printf("%s Couldn't allocate a contiguous buffer in DOS memory.\n", WaveError);
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return 0;
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}
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/*----- Init Sound Card (and IRQ controller) ---*/
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Wave_Driver_Enable = _InitCard(BUFFER_DMA);
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if (!Wave_Driver_Enable)
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{
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printf("%s Sound card not found.\n", WaveError);
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}
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return Wave_Driver_Enable;
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}
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void ClearWave()
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{
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union REGS r;
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struct SREGS sr;
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if (!Wave_Driver_Enable)
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return;
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/*----- Reset Sound Card (and IRQ controller) ---*/
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_ClearCard();
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}
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/*-------------------------------------------------------------------------*/
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