reactos/drivers/multimedia/audio/sound/wave.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* FILE: mkernel/modules/sound/sound.c
* PURPOSE: SoundBlaster 16 Driver
* PROGRAMMER: Snatched from David Welch (welch@mcmail.com)
* Modified for Soundblaster by Robert Bergkvist (fragdance@hotmail.com)
* UPDATE HISTORY:
* ??/??/??: Created
*
*/
/* FUNCTIONS **************************************************************/
#include <ntddk.h>
#include <string.h>
#include <devices.h>
#include "sb16.h"
#include "dsp.h"
#include "mixer.h"
#include "in.h"
#include "wave.h"
#define NDEBUG
#include <debug.h>
SB16 sb16;
ULONG OldIRQ;
PKINTERRUPT IrqObject;
static BOOLEAN NTAPI DMAOutputISR(PKINTERRUPT Interrupt, PVOID ServiceContext)
{
DPRINT1("interrupt\n");
return FALSE;
}
void sb16_play(WAVE_HDR* wave)
{
ULONG MappedIrq;
KIRQL Dirql;
KAFFINITY Affinity;
PKINTERRUPT IrqObject;
unsigned int newmask;
unsigned int i;
unsigned int tmp[255];
i=0;
dump_wav(wave);
do
{
// tmp[i++]=get_dma_page(0x0fffff);
// DPRINT1("0x%x ",tmp[i-1]);
}
while((tmp[i-1]&0xffff)!=0);
// free_page((tmp[0]),i-1);
sb16.buffer=((unsigned char*)tmp[i-1]);
/*
* Because this is used by alomost every subsystem including irqs it
* must be atomic. The following code sequence disables interrupts after
* saving the previous state of the interrupt flag
*/
_disable();
memcpy(sb16.buffer,(&wave->data),wave->dLen);
MappedIrq = HalGetInterruptVector(Internal,0,0,8+sb16.irq,&Dirql,&Affinity);
IoConnectInterrupt(&IrqObject,DMAOutputISR,0,NULL,MappedIrq,Dirql,Dirql,0,FALSE,Affinity,FALSE);
// mask=inb(0x21);
newmask=((int)1<<sb16.irq);
// outb(0x21,(mask&~newmask));
// Restore the interrupt flag
_enable();
// disable_dma(sb16.dma8);
//outb(0x0a,5);
// clear_dma_ff(1);
//outb(0xc,0);
// set_dma_count(1,wave->dLen);
//set_dma_mode(1,DMA_MODE_WRITE);
//outb(0xb,0x49);
//outb(0x3,(wave->dLen)&0xff);
//outb(0x3,((unsigned int)(wave->dLen)>>8)&0xff);
//set_dma_addr(sb16.dma8,(unsigned int)sb16.buffer);
//outb(0x83,(((unsigned int)(sb16.buffer-IDMAP_BASE)>>16))&0xf);
//outb(0x2,((unsigned int)sb16.buffer&0xff));
//outb(0x2,(((unsigned int)(sb16.buffer-IDMAP_BASE)>>8))&0xff);
//enable_dma(sb16.dma8);
//outb(0xa,1);
write_dsp(sb16.base,0x00D1);
write_dsp(sb16.base,0x40);
write_dsp(sb16.base,((unsigned char)256-(1000000/wave->nSamplesPerSec)));
// outb(sb16.base + 4, (int) 0xa);
// outb(sb16.base + 5, (int) 0x00);
// outb(sb16.base + 4, (int) 4);
// outb(sb16.base + 5, (int) 0xFF);
// outb(sb16.base + 4, (int) 0x22);
// outb(sb16.base + 5, (int) 0xFF);
write_dsp(sb16.base,0x14);
write_dsp(sb16.base,(wave->dLen&0x00ff));
write_dsp(sb16.base,((wave->dLen)&0xff00)>>8);
// write_dsp(sb16.base,0xc0);
// write_dsp(sb16.base,0x0);
// OldIRQ=HalGetInterruptVector(Internal,0,0,irq+8,&irql,&affinity);
// DPRINT1("OldIRQ: 0x%x\n",OldIRQ);
// status=IoConnectInterrupt(&IrqObject,playRoutine,0,NULL,OldIRQ,irql,irql,0,FALSE,affinity,FALSE);
// if(status!=STATUS_SUCCESS) DPRINT1("Couldn't set irq\n");
// else DPRINT1("IRQ set\n");
}
void dump_wav(WAVE_HDR* wave)
{
DPRINT1("wave.rID: %c%c%c%c\n",wave->rID[0],wave->rID[1],wave->rID[2],wave->rID[3]);
DPRINT1("wave.rLen: 0x%x\n",wave->rLen);
DPRINT1("wave.wID: %c%c%c%c\n",wave->wID[0],wave->wID[1],wave->wID[2],wave->wID[3]);
DPRINT1("wave.fID: %c%c%c%c\n",wave->fID[0],wave->fID[1],wave->fID[2],wave->fID[3]);
DPRINT1("wave.fLen: 0x%x\n",wave->fLen);
DPRINT1("wave.wFormatTag: 0x%x\n",wave->wFormatTag);
DPRINT1("wave.nChannels: 0x%x\n",wave->nChannels);
DPRINT1("wave.nSamplesPerSec: 0x%x\n",wave->nSamplesPerSec);
DPRINT1("wave.nAvgBytesPerSec: 0x%x\n",wave->nAvgBytesPerSec);
DPRINT1("wave.nBlockAlign: 0x%x\n",wave->nBlockAlign);
DPRINT1("wave.FormatSpecific: 0x%x\n",wave->FormatSpecific);
DPRINT1("wave.dID: %c%c%c%c\n",wave->dID[0],wave->dID[1],wave->dID[2],wave->dID[3]);
DPRINT1("wave.dLen: 0x%x\n",wave->dLen);
}
BOOLEAN playRoutine(PKINTERRUPT Interrupt,PVOID ServiceContext)
{
return FALSE;
}