void midi_out(int v)
{
/*
char b[80] ;
sprintf(b,"midi out %2x",v&0xff) ;
OUTDEBUG(b) ;
*/
SbDspWrite(0x38) ;
SbDspWrite(v&0xff) ;
}
NTSTATUS
SbDspGetVersion(
IN PUCHAR BasePort,
OUT PUCHAR MajorVersion,
OUT PUCHAR MinorVersion,
IN ULONG Timeout)
{
NTSTATUS Status;
/* Make sure our parameters are sane */
if ( ! MajorVersion )
return STATUS_INVALID_PARAMETER_2;
if ( ! MinorVersion )
return STATUS_INVALID_PARAMETER_3;
/* Send version request */
Status = SbDspWrite(BasePort, SB_DSP_VERSION, Timeout);
if ( Status != STATUS_SUCCESS )
return Status;
/* Get the major version */
Status = SbDspRead(BasePort, MajorVersion, Timeout);
if ( Status != STATUS_SUCCESS )
return FALSE;
/* Get the minor version */
Status = SbDspRead(BasePort, MinorVersion, Timeout);
return Status;
}
// [fold] [
int SbDetect(void)
{
int old;
if (!SbDspReset())
return FALSE ;
// Detecte la puce MIXER.
audio.mixer = FALSE;
old=SbMixerRead(0x22);
SbMixerWrite(0x22,243);
if (SbMixerRead(0x22)==243) {
SbMixerWrite(0x22,old);
audio.mixer = TRUE;
}
// Detecte la version du DSP sur la carte
audio.dspversion=0;
SbDspWrite(0xe1); // Get version number.
audio.dspversion = SbDspRead()<<8;
audio.dspversion |= SbDspRead();
// Determine le type de carte (8,PRO ou 16)
if (!audio.mixer) audio.type=SB8;
else {
if (audio.dspversion<0x0400) audio.type=SBPRO;
else audio.type=SB16;
}
// DEBUG: Pour l'instant on sucre la SB-PRO !!
if (audio.type==SBPRO) {
audio.type=SB8;
audio.mixer=FALSE;
}
return TRUE ;
}
//---------------------------------------------------- play sample with DMA
void dma_play(void)
{
if (!AudioDevice) return ;
outp(0x0a,4+audio.dma) ; // set mask bit channel
outp(0x0c,0) ; // clear byte ptr
outp(0x0b,0x48+audio.dma) ; // set DMA transfer mode
outp(dmaports[audio.dma].offset,((int)audio_buffer1)&0xff) ;
outp(dmaports[audio.dma].offset,((int)audio_buffer1>>8)&0xff) ;
outp(dmaports[audio.dma].page,((int)audio_buffer1>>16)&0xf) ;
outp(dmaports[audio.dma].length,(samples_to_generate-1)&0xff) ;
outp(dmaports[audio.dma].length,((samples_to_generate-1)>>8)&0xff) ;
outp(0x0a,audio.dma) ; // clear DMA mask bit
switch(AudioDevice) {
case AUDIODEVICE_NONE :
return ;
case AUDIODEVICE_SOUNDBLASTER :
switch (audio.type) {
case SB8:
SbDspWrite(0x14);
SbDspWrite(samples_to_generate-1);
SbDspWrite((samples_to_generate-1)>>8);
break;
case SBPRO:
SbDspWrite(0x48);
SbDspWrite(samples_to_generate-1);
SbDspWrite((samples_to_generate-1)>>8);
SbDspWrite(0x91);
break;
case SB16:
SbDspWrite(0x45); // DMA continue.
break;
}
/* senddsp(audio.port,0x14) ; // DSP func 8 bit DAC
senddsp(audio.port,(samples_to_generate)&0xff) ;
senddsp(audio.port,(samples_to_generate>>8)&0xff) ;
*/
break ;
}
}
void init_soundcard()
{
switch(AudioDevice) {
case AUDIODEVICE_NONE :
break ;
case AUDIODEVICE_SOUNDBLASTER: ;
outp(0x0a,4+audio.dma);
outp(0x0c,0x00);
outp(0x0b,0x48 + audio.dma);
outp(dmaports[audio.dma].offset,((int)audio_buffer1)&0xff) ;
outp(dmaports[audio.dma].offset,((int)audio_buffer1>>8)&0xff) ;
outp(dmaports[audio.dma].page,((int)audio_buffer1>>16)&0xf) ;
outp(dmaports[audio.dma].length,(samples_to_generate-1)&0xff) ;
outp(dmaports[audio.dma].length,((samples_to_generate-1)>>8)&0xff) ;
outp(0x0a,audio.dma) ; // clear DMA mask bit
SbDspWrite(0x40);
SbDspWrite(256-1000000L/RENDITIONFREQ); //playback rate
switch (audio.type)
{
case SB8:
SbDspWrite(0x14);
SbDspWrite(samples_to_generate-1);
SbDspWrite((samples_to_generate-1)>>8);
break;
case SBPRO:
SbDspWrite(0x48);
SbDspWrite(samples_to_generate-1);
SbDspWrite((samples_to_generate-1)>>8);
SbDspWrite(0x91);
break;
case SB16:
SbDspWrite(0xc6); // Play DMA 8 bits AUTO-LOOP (0xb6 pour 16bits)
SbDspWrite(0x00); // 0x20 si STEREO
SbDspWrite(samples_to_generate-1);
SbDspWrite((samples_to_generate-1)>>8);
break;
}
// Autorise sortie son.
SbDspSpeakOn();
// senddsp(audio.port,0xd1) ; // turn on speaker ;
// senddsp(audio.port,0x40) ; // set playback rate
// senddsp(audio.port,211) ;
break ;
case AUDIODEVICE_GUS :
if (init_gus())
printf("GUS seems OK...Cheers! ^_^\n\n") ;
else {
printf("GUS problem. :(\n\n") ;
AudioDevice=AUDIODEVICE_NONE ;
}
break ;
}
}
void SbDspDmaStop(void)
{
SbDspWrite(0xd0);
}
void SbDspDmaContinue(void)
{
SbDspWrite(0xd4);
}
void SbDspSpeakOff(void)
{
SbDspWrite(0xd3);
}
void SbDspSpeakOn(void)
{
SbDspWrite(0xd1);
}