dlls/krnl386.exe16/soundblaster.c

   1 /*
   2  * Soundblaster Emulation
   3  *
   4  * Copyright 2002 Christian Costa
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "dosexe.h"
  28 #include "wine/debug.h"
  29 #include "wingdi.h"
  30 #include "mmsystem.h"
  31 #include "dsound.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(sblaster);
  34
  35 /* Board Configuration */
  36 /* FIXME: Should be in a config file */
  37 #define SB_IRQ 5
  38 #define SB_IRQ_PRI 11
  39 #define SB_DMA 1
  40
  41 /* Soundblaster state */
  42 static int SampleMode;         /* Mono / Stereo */
  43 static int SampleRate;
  44 static int SamplesCount;
  45 static BYTE DSP_Command[256];  /* Store param numbers in bytes for each command */
  46 static BYTE DSP_InBuffer[10];  /* Store DSP command bytes parameters from host */
  47 static int InSize;             /* Nb of bytes in InBuffer */
  48 static BYTE DSP_OutBuffer[10]; /* Store DSP information bytes to host */
  49 static int OutSize;            /* Nb of bytes in InBuffer */
  50 static int command;            /* Current command */
  51 static int end_sound_loop = 0;
  52 static int dma_enable = 0;
  53
  54 /* The maximum size of a dma transfer can be 65536 */
  55 #define DMATRFSIZE 1024
  56
  57 /* DMA can perform 8 or 16-bit transfer */
  58 static BYTE dma_buffer[DMATRFSIZE*2];
  59
  60 /* Direct Sound buffer config */
  61 #define DSBUFLEN 4096 /* FIXME: Only this value seems to work */
  62
  63 /* Direct Sound playback stuff */
  64 static LPDIRECTSOUND lpdsound;
  65 static LPDIRECTSOUNDBUFFER lpdsbuf;
  66 static DSBUFFERDESC buf_desc;
  67 static WAVEFORMATEX wav_fmt;
  68 static HANDLE SB_Thread;
  69 static UINT buf_off;
  70 extern HWND vga_hwnd;
  71
  72 /* SB_Poll performs DMA transfers and fills the Direct Sound Buffer */
  73 static DWORD CALLBACK SB_Poll( void *dummy )
  74 {
  75     HRESULT result;
  76     LPBYTE lpbuf1 = NULL;
  77     LPBYTE lpbuf2 = NULL;
  78     DWORD dwsize1 = 0;
  79     DWORD dwsize2 = 0;
  80     DWORD dwbyteswritten1 = 0;
  81     DWORD dwbyteswritten2 = 0;
  82     int size;
  83
  84     /* FIXME: this loop must be improved */
  85     while(!end_sound_loop)
  86     {
  87         Sleep(10);
  88
  89         if (dma_enable) {
  90             size = DMA_Transfer(SB_DMA,min(DMATRFSIZE,SamplesCount),dma_buffer);
  91         } else
  92             continue;
  93
  94         result = IDirectSoundBuffer_Lock(lpdsbuf,buf_off,size,(LPVOID *)&lpbuf1,&dwsize1,(LPVOID *)&lpbuf2,&dwsize2,0);
  95         if (result != DS_OK) {
  96           ERR("Unable to lock sound buffer !\n");
  97           continue;
  98         }
  99
 100         dwbyteswritten1 = min(size,dwsize1);
 101         memcpy(lpbuf1,dma_buffer,dwbyteswritten1);
 102         if (size>dwsize1) {
 103             dwbyteswritten2 = min(size - dwbyteswritten1,dwsize2);
 104             memcpy(lpbuf2,dma_buffer+dwbyteswritten1,dwbyteswritten2);
 105         }
 106         buf_off = (buf_off + dwbyteswritten1 + dwbyteswritten2) % DSBUFLEN;
 107
 108         result = IDirectSoundBuffer_Unlock(lpdsbuf,lpbuf1,dwbyteswritten1,lpbuf2,dwbyteswritten2);
 109         if (result!=DS_OK)
 110             ERR("Unable to unlock sound buffer !\n");
 111
 112         SamplesCount -= size;
 113         if (!SamplesCount) {
 114             DOSVM_QueueEvent(SB_IRQ,SB_IRQ_PRI,NULL,NULL);
 115             dma_enable = 0;
 116         }
 117     }
 118     return 0;
 119 }
 120
 121 static BOOL SB_Init(void)
 122 {
 123     HRESULT result;
 124
 125     if (!lpdsound) {
 126         result = DirectSoundCreate(NULL,&lpdsound,NULL);
 127         if (result != DS_OK) {
 128             ERR("Unable to initialize Sound Subsystem err = %x !\n",result);
 129             return 0;
 130         }
 131
 132         /* FIXME: To uncomment when :
 133            - SetCooperative level is correctly implemented
 134            - an always valid and non changing handle to a windows  (vga_hwnd) is available
 135              (this surely needs some work in vga.c)
 136         result = IDirectSound_SetCooperativeLevel(lpdsound,vga_hwnd,DSSCL_EXCLUSIVE|DSSCL_PRIORITY);
 137         if (result != DS_OK) {
 138             ERR("Can't set cooperative level !\n");
 139             return 0;
 140         }
 141         */
 142
 143         /* Default format */
 144         wav_fmt.wFormatTag = WAVE_FORMAT_PCM;
 145         wav_fmt.nChannels = 1;
 146         wav_fmt.nSamplesPerSec = 22050;
 147         wav_fmt.nAvgBytesPerSec = 22050;
 148         wav_fmt.nBlockAlign = 1;
 149         wav_fmt.wBitsPerSample = 8;
 150         wav_fmt.cbSize = 0;
 151
 152         memset(&buf_desc,0,sizeof(DSBUFFERDESC));
 153         buf_desc.dwSize = sizeof(DSBUFFERDESC);
 154         buf_desc.dwBufferBytes = DSBUFLEN;
 155         buf_desc.lpwfxFormat = &wav_fmt;
 156         result = IDirectSound_CreateSoundBuffer(lpdsound,&buf_desc,&lpdsbuf,NULL);
 157         if (result != DS_OK) {
 158             ERR("Can't create sound buffer !\n");
 159             return 0;
 160         }
 161
 162         result = IDirectSoundBuffer_Play(lpdsbuf,0, 0, DSBPLAY_LOOPING);
 163         if (result != DS_OK) {
 164             ERR("Can't start playing !\n");
 165             return 0;
 166         }
 167
 168         buf_off = 0;
 169         end_sound_loop = 0;
 170         SB_Thread = CreateThread(NULL, 0, SB_Poll, NULL, 0, NULL);
 171         TRACE("thread\n");
 172         if (!SB_Thread) {
 173             ERR("Can't create thread !\n");
 174             return 0;
 175         }
 176     }
 177     return 1;
 178 }
 179
 180 static void SB_Reset(void)
 181 {
 182     int i;
 183
 184     for(i=0;i<256;i++)
 185         DSP_Command[i]=0;
 186
 187     /* Set Time Constant */
 188     DSP_Command[0x40]=1;
 189     /* Generate IRQ */
 190     DSP_Command[0xF2]=0;
 191     /* DMA DAC 8-bits */
 192     DSP_Command[0x14]=2;
 193     /* Generic DAC/ADC DMA (16-bit, 8-bit) */
 194     for(i=0xB0;i<=0xCF;i++)
 195         DSP_Command[i]=3;
 196     /* DSP Indentification */
 197     DSP_Command[0xE0]=1;
 198
 199     /* Clear command and input buffer */
 200     command = -1;
 201     InSize = 0;
 202
 203     /* Put a garbage value in the output buffer */
 204     OutSize = 1;
 205     if (SB_Init())
 206         /* All right, let's put the magic value for autodetection */
 207         DSP_OutBuffer[0] = 0xaa;
 208     else
 209         /* Something is wrong, put 0 to failed autodetection */
 210         DSP_OutBuffer[0] = 0x00;
 211 }
 212
 213 /* Find a standard sampling rate for DirectSound */
 214 static int SB_StdSampleRate(int SampleRate)
 215 {
 216   if (SampleRate>((44100+48000)/2)) return 48000;
 217   if (SampleRate>((32000+44100)/2)) return 44100;
 218   if (SampleRate>((24000+32000)/2)) return 32000;
 219   if (SampleRate>((22050+24000)/2)) return 24000;
 220   if (SampleRate>((16000+22050)/2)) return 22050;
 221   if (SampleRate>((12000+16000)/2)) return 16000;
 222   if (SampleRate>((11025+12000)/2)) return 12000;
 223   if (SampleRate>((8000+11025)/2))  return 11025;
 224   return 8000;
 225 }
 226
 227 void SB_ioport_out( WORD port, BYTE val )
 228 {
 229     switch(port)
 230     {
 231     /* DSP - Reset */
 232     case 0x226:
 233         TRACE("Resetting DSP.\n");
 234         SB_Reset();
 235         break;
 236     /* DSP - Write Data or Command */
 237     case 0x22c:
 238         TRACE("val=%x\n",val);
 239         if (command == -1) {
 240           /* Clear input buffer and set the current command */
 241           command = val;
 242           InSize = 0;
 243         }
 244         if (InSize!=DSP_Command[command])
 245            /* Fill the input buffer the command parameters if any */
 246            DSP_InBuffer[InSize++]=val;
 247         else {
 248             /* Process command */
 249             switch(command)
 250             {
 251             case 0x10: /* SB */
 252                 FIXME("Direct DAC (8-bit) - Not Implemented\n");
 253                 break;
 254             case 0x14: /* SB */
 255                 SamplesCount = DSP_InBuffer[1]+(val<<8)+1;
 256                 TRACE("DMA DAC (8-bit) for %x samples\n",SamplesCount);
 257                 dma_enable = 1;
 258                 break;
 259             case 0x20:
 260                 FIXME("Direct ADC (8-bit) - Not Implemented\n");
 261                 break;
 262             case 0x24: /* SB */
 263                 FIXME("DMA ADC (8-bit) - Not Implemented\n");
 264                 break;
 265             case 0x40: /* SB */
 266                 SampleRate = 1000000/(256-val);
 267                 TRACE("Set Time Constant (%d <-> %d Hz => %d Hz)\n",DSP_InBuffer[0],
 268                     SampleRate,SB_StdSampleRate(SampleRate));
 269                 SampleRate = SB_StdSampleRate(SampleRate);
 270                 wav_fmt.nSamplesPerSec = SampleRate;
 271                 wav_fmt.nAvgBytesPerSec = SampleRate;
 272                 IDirectSoundBuffer_SetFormat(lpdsbuf,&wav_fmt);
 273                 break;
 274             /* case 0xBX/0xCX -> See below */
 275             case 0xD0: /* SB */
 276                 TRACE("Halt DMA operation (8-bit)\n");
 277                 dma_enable = 0;
 278                 break;
 279             case 0xD1: /* SB */
 280                 FIXME("Enable Speaker - Not Implemented\n");
 281                 break;
 282             case 0xD3: /* SB */
 283                 FIXME("Disable Speaker - Not Implemented\n");
 284                 break;
 285             case 0xD4: /* SB */
 286                 FIXME("Continue DMA operation (8-bit) - Not Implemented\n");
 287                 break;
 288             case 0xD8: /* SB */
 289                 FIXME("Speaker Status - Not Implemented\n");
 290                 break;
 291             case 0xE0: /* SB 2.0 */
 292                 TRACE("DSP Identification\n");
 293                 DSP_OutBuffer[OutSize++] = ~val;
 294                 break;
 295             case 0xE1: /* SB */
 296                TRACE("DSP Version\n");
 297                OutSize=2;
 298                DSP_OutBuffer[0]=0; /* returns version 1.0 */
 299                DSP_OutBuffer[1]=1;
 300                 break;
 301             case 0xF2: /* SB */
 302                 TRACE("IRQ Request (8-bit)\n");
 303                 DOSVM_QueueEvent(SB_IRQ,SB_IRQ_PRI,NULL,NULL);
 304                 break;
 305             default:
 306               if (((command&0xF0)==0xB0)||((DSP_InBuffer[0]&0xF0)==0xC0)) {
 307                     /* SB16 */
 308                     FIXME("Generic DAC/ADC DMA (16-bit, 8-bit) - %d % d\n",command,DSP_InBuffer[1]);
 309                     if (command&0x02)
 310                         FIXME("Generic DAC/ADC fifo mode not supported\n");
 311                     if (command&0x04)
 312                         FIXME("Generic DAC/ADC autoinit dma mode not supported\n");
 313                     if (command&0x08)
 314                         FIXME("Generic DAC/ADC adc mode not supported\n");
 315                     switch(command>>4) {
 316                     case 0xB:
 317                         FIXME("Generic DAC/ADC 8-bit not supported\n");
 318                         SampleMode = 0;
 319                         break;
 320                     case 0xC:
 321                         FIXME("Generic DAC/ADC 16-bit not supported\n");
 322                         SampleMode = 1;
 323                         break;
 324                     default:
 325                         ERR("Generic DAC/ADC resolution unknown\n");
 326                         break;
 327                     }
 328                     if (DSP_InBuffer[1]&0x010)
 329                         FIXME("Generic DAC/ADC signed sample mode not supported\n");
 330                     if (DSP_InBuffer[1]&0x020)
 331                         FIXME("Generic DAC/ADC stereo mode not supported\n");
 332                     SamplesCount = DSP_InBuffer[2]+(val<<8)+1;
 333                     TRACE("Generic DMA for %x samples\n",SamplesCount);
 334                     dma_enable = 1;
 335                 }
 336                 else
 337                     FIXME("DSP command %x not supported\n",val);
 338             }
 339             /* Empty the input buffer and end the command */
 340             InSize = 0;
 341             command = -1;
 342         }
 343     }
 344 }
 345
 346 BYTE SB_ioport_in( WORD port )
 347 {
 348     BYTE res = 0;
 349
 350     switch(port)
 351     {
 352     /* DSP Read Data */
 353     case 0x22a:
 354         /* Value in the read buffer */
 355       if (OutSize)
 356           res = DSP_OutBuffer[--OutSize];
 357       else
 358           /* return the last byte */
 359           res = DSP_OutBuffer[0];
 360       break;
 361     /* DSP - Write Buffer Status */
 362     case 0x22c:
 363         /* DSP always ready for writing */
 364         res = 0x00;
 365         break;
 366     /* DSP - Data Available Status */
 367     /* DSP - IRQ Acknowledge, 8-bit */
 368     case 0x22e:
 369         /* DSP data availability check */
 370         if (OutSize)
 371             res = 0x80;
 372         else
 373             res = 0x00;
 374         break;
 375     }
 376     return res;
 377 }