Category : C Source Code
Archive   : SBF2.ZIP
Filename : DRIVER.C

 
Output of file : DRIVER.C contained in archive : SBF2.ZIP
/*
Example code that uses CT-VOICE.DRV to access the Soundblaster
DAC channel.
*/

#include
#include
#include
#include
#include
#include

char far *driver_mem = NULL;
void far (*driver)(void) = NULL;

void LoadDriver(void)
{
FILE *f;
long length;
char *sp;
char sn[129];

strcpy(sn,"");
sp = getenv("SOUND");
if(sp)
{
strcpy(sn,sp);
if(sn[strlen(sn)-1] != '\\')
strcat(sn,"\\");
}
strcat(sn,"drv\\CT-VOICE.DRV");

f = fopen(sn,"rb");
if(!f)
return;
length = filelength(fileno(f));

driver_mem = (char far *)malloc((int)length + 16);
if(FP_SEG(driver_mem) != 0)
driver = MK_FP(FP_SEG(driver_mem)+1,0);
else
driver = driver_mem;

fread(driver,1,(int)length,f);

fclose(f);
}

int GetVersion(void)
{
_BX = 0;
(*driver)();
return _AX;
}

void SetIOAddr(int base)
{
_BX = 1;
_AX = base;
(*driver)();
}

void SetIRQ(int irq)
{
_BX = 2;
_AX = irq;
(*driver)();
}

int InitialiseDriver(void)
{
_BX = 3;
(*driver)();
return _AX;
}

void UninstallDriver(void)
{
_BX = 9;
(*driver)();
}

void SpeakerOnOff(int onoff)
{
_BX = 4;
_AX = onoff & 0x0001;
(*driver)();
}

void SetStatusWord(unsigned int *addr)
{
_BX = 5;
_ES = FP_SEG(addr);
_DI = FP_OFF(addr);
(*driver)();
}

void OutputVoice(char *buffer)
{
_BX = 6;
_ES = FP_SEG(buffer);
_DI = FP_OFF(buffer);
(*driver)();
}

void InputVoice(int sample_rate, char *buffer, long length)
{
_BX = 7;
_AX = sample_rate;
_ES = FP_SEG(buffer);
_DI = FP_OFF(buffer);
_DX = (unsigned)(length >> 16);
_CX = (unsigned)(length & 0x0000ffff);
(*driver)();
}

void StopVoiceProcess(void)
{
_BX = 8;
(*driver)();
}

int PauseOutputVoice(void)
{
_BX = 10;
(*driver)();
return _AX;
}

int ContinueOutputVoice(void)
{
_BX = 11;
(*driver)();
return _AX;
}

char *LoadVOC(char *name)
{
FILE *f;
char *buf;
long length;

f = fopen(name,"rb");
if(!f)
return NULL;

length = filelength(fileno(f)) - 0x1a;

buf = (char *)malloc((int)length);
fseek(f,0x1a,SEEK_SET);
fread(buf,1,length,f);

fclose(f);
return buf;
}

void main(int argc, char *argv[])
{
char *b;
int status;

LoadDriver();
if(driver == NULL)
{
printf("Could not load CT-VOICE.DRV\n");
exit(1);
}

printf("Voice version %d\n",GetVersion());

if(InitialiseDriver())
{
printf("Could not initialise driver.\n");
exit(1);
}
SetStatusWord(&status);

b = LoadVOC(argv[1]);

OutputVoice(b);

while(status)
;

free(b);

UninstallDriver();

free(driver_mem);

exit(0);
}


  3 Responses to “Category : C Source Code
Archive   : SBF2.ZIP
Filename : DRIVER.C
”

  1. Daniel says:
    January 27, 2013 at 3:59 pm

    Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. Joshie says:
    March 18, 2014 at 4:57 pm

    This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. DiskingRound says:
    January 14, 2015 at 10:57 pm

    But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/