reactos/drivers/base/sound/wave.c

   1 /*
   2  * COPYRIGHT:        See COPYING in the top level directory
   3  * PROJECT:          ReactOS kernel
   4  * FILE:             mkernel/modules/sound/sound.c
   5  * PURPOSE:          SoundBlaster 16 Driver
   6  * PROGRAMMER:       Snatched from David Welch (welch@mcmail.com)
   7  *                   Modified for Soundblaster by Robert Bergkvist (fragdance@hotmail.com)
   8  * UPDATE HISTORY:
   9  *              ??/??/??: Created
  10  *
  11  */
  12
  13 /* FUNCTIONS **************************************************************/
  14
  15 #include <ntddk.h>
  16 #include <halfuncs.h>
  17 #include <string.h>
  18 #include <devices.h>
  19
  20 #include "sb16.h"
  21 #include "dsp.h"
  22 #include "mixer.h"
  23 #include "in.h"
  24 #include "wave.h"
  25
  26 #define NDEBUG
  27 #include <debug.h>
  28
  29 SB16 sb16;
  30
  31 ULONG OldIRQ;
  32 PKINTERRUPT IrqObject;
  33
  34 static BOOLEAN STDCALL DMAOutputISR(PKINTERRUPT Interrupt, PVOID ServiceContext)
  35 {
  36         DPRINT1("interrupt\n");
  37         return FALSE;
  38 }
  39
  40 void sb16_play(WAVE_HDR* wave)
  41 {
  42         ULONG MappedIrq;
  43         KIRQL Dirql;
  44         KAFFINITY Affinity;
  45         PKINTERRUPT IrqObject;
  46         unsigned int newmask;
  47
  48         unsigned int i;
  49         unsigned int tmp[255];
  50         i=0;
  51         dump_wav(wave);
  52         do
  53         {
  54 //              tmp[i++]=get_dma_page(0x0fffff);
  55 //                      DPRINT1("0x%x ",tmp[i-1]);
  56         }
  57         while((tmp[i-1]&0xffff)!=0);
  58                         // free_page((tmp[0]),i-1);
  59         sb16.buffer=((unsigned char*)tmp[i-1]);
  60
  61    /*
  62     * Because this is used by alomost every subsystem including irqs it
  63     * must be atomic. The following code sequence disables interrupts after
  64     * saving the previous state of the interrupt flag
  65     */
  66
  67         _disable();
  68
  69        memcpy(sb16.buffer,(&wave->data),wave->dLen);
  70
  71
  72                                 MappedIrq = HalGetInterruptVector(Internal,0,0,8+sb16.irq,&Dirql,&Affinity);
  73
  74
  75
  76                                 IoConnectInterrupt(&IrqObject,DMAOutputISR,0,NULL,MappedIrq,Dirql,Dirql,0,FALSE,Affinity,FALSE);
  77
  78         // mask=inb(0x21);
  79         newmask=((int)1<<sb16.irq);
  80         // outb(0x21,(mask&~newmask));
  81
  82        // Restore the interrupt flag
  83         _enable();
  84
  85
  86
  87         // disable_dma(sb16.dma8);
  88         //outb(0x0a,5);
  89         // clear_dma_ff(1);
  90         //outb(0xc,0);
  91         // set_dma_count(1,wave->dLen);
  92         //set_dma_mode(1,DMA_MODE_WRITE);
  93         //outb(0xb,0x49);
  94         //outb(0x3,(wave->dLen)&0xff);
  95         //outb(0x3,((unsigned int)(wave->dLen)>>8)&0xff);
  96         //set_dma_addr(sb16.dma8,(unsigned int)sb16.buffer);
  97         //outb(0x83,(((unsigned int)(sb16.buffer-IDMAP_BASE)>>16))&0xf);
  98         //outb(0x2,((unsigned int)sb16.buffer&0xff));
  99         //outb(0x2,(((unsigned int)(sb16.buffer-IDMAP_BASE)>>8))&0xff);
 100         //enable_dma(sb16.dma8);
 101         //outb(0xa,1);
 102
 103         write_dsp(sb16.base,0x00D1);
 104
 105         write_dsp(sb16.base,0x40);
 106         write_dsp(sb16.base,((unsigned char)256-(1000000/wave->nSamplesPerSec)));
 107
 108 //  outb(sb16.base + 4, (int) 0xa);
 109 //  outb(sb16.base + 5, (int) 0x00);
 110
 111 //  outb(sb16.base + 4, (int) 4);
 112 //  outb(sb16.base + 5, (int) 0xFF);
 113
 114 //  outb(sb16.base + 4, (int) 0x22);
 115 //  outb(sb16.base + 5, (int) 0xFF);
 116
 117         write_dsp(sb16.base,0x14);
 118         write_dsp(sb16.base,(wave->dLen&0x00ff));
 119         write_dsp(sb16.base,((wave->dLen)&0xff00)>>8);
 120
 121 //      write_dsp(sb16.base,0xc0);
 122 //      write_dsp(sb16.base,0x0);
 123 //      OldIRQ=HalGetInterruptVector(Internal,0,0,irq+8,&irql,&affinity);
 124 //      DPRINT1("OldIRQ: 0x%x\n",OldIRQ);
 125
 126 //  status=IoConnectInterrupt(&IrqObject,playRoutine,0,NULL,OldIRQ,irql,irql,0,FALSE,affinity,FALSE);
 127 //  if(status!=STATUS_SUCCESS) DPRINT1("Couldn't set irq\n");
 128 //  else DPRINT1("IRQ set\n");
 129
 130 }
 131
 132 void dump_wav(WAVE_HDR* wave)
 133 {
 134         DPRINT1("wave.rID: %c%c%c%c\n",wave->rID[0],wave->rID[1],wave->rID[2],wave->rID[3]);
 135         DPRINT1("wave.rLen: 0x%x\n",wave->rLen);
 136         DPRINT1("wave.wID: %c%c%c%c\n",wave->wID[0],wave->wID[1],wave->wID[2],wave->wID[3]);
 137         DPRINT1("wave.fID: %c%c%c%c\n",wave->fID[0],wave->fID[1],wave->fID[2],wave->fID[3]);
 138         DPRINT1("wave.fLen: 0x%x\n",wave->fLen);
 139         DPRINT1("wave.wFormatTag: 0x%x\n",wave->wFormatTag);
 140         DPRINT1("wave.nChannels: 0x%x\n",wave->nChannels);
 141         DPRINT1("wave.nSamplesPerSec: 0x%x\n",wave->nSamplesPerSec);
 142         DPRINT1("wave.nAvgBytesPerSec: 0x%x\n",wave->nAvgBytesPerSec);
 143         DPRINT1("wave.nBlockAlign: 0x%x\n",wave->nBlockAlign);
 144         DPRINT1("wave.FormatSpecific: 0x%x\n",wave->FormatSpecific);
 145         DPRINT1("wave.dID: %c%c%c%c\n",wave->dID[0],wave->dID[1],wave->dID[2],wave->dID[3]);
 146         DPRINT1("wave.dLen: 0x%x\n",wave->dLen);
 147 }
 148
 149 BOOLEAN playRoutine(PKINTERRUPT Interrupt,PVOID ServiceContext)
 150 {
 151         return FALSE;
 152 }