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;
}