dlls/winedos/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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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 HMODULE hmodule;
  65 typedef HRESULT (WINAPI* fnDirectSoundCreate) (LPGUID,LPDIRECTSOUND*,LPUNKNOWN);
  66 fnDirectSoundCreate lpDirectSoundCreate;
  67 static LPDIRECTSOUND lpdsound;
  68 static LPDIRECTSOUNDBUFFER lpdsbuf;
  69 static DSBUFFERDESC buf_desc;
  70 static WAVEFORMATEX wav_fmt;
  71 static HANDLE SB_Thread;
  72 static UINT buf_off;
  73 extern HWND vga_hwnd;
  74
  75 /* SB_Poll performs DMA transfers and fills the Direct Sound Buffer */
  76 static DWORD CALLBACK SB_Poll( void *dummy )
  77 {
  78     HRESULT result;
  79     LPBYTE lpbuf1 = NULL;
  80     LPBYTE lpbuf2 = NULL;
  81     DWORD dwsize1 = 0;
  82     DWORD dwsize2 = 0;
  83     DWORD dwbyteswritten1 = 0;
  84     DWORD dwbyteswritten2 = 0;
  85     int size;
  86
  87     /* FIXME: this loop must be improved */
  88     while(!end_sound_loop)
  89     {
  90         Sleep(10);
  91
  92         if (dma_enable) {
  93             size = DMA_Transfer(SB_DMA,min(DMATRFSIZE,SamplesCount),dma_buffer);
  94         } else
  95             continue;
  96
  97         result = IDirectSoundBuffer_Lock(lpdsbuf,buf_off,size,&lpbuf1,&dwsize1,&lpbuf2,&dwsize2,0);
  98         if (result != DS_OK) {
  99           ERR("Unable to lock sound buffer !\n");
 100           continue;
 101         }
 102
 103         dwbyteswritten1 = min(size,dwsize1);
 104         memcpy(lpbuf1,dma_buffer,dwbyteswritten1);
 105         if (size>dwsize1) {
 106             dwbyteswritten2 = min(size - dwbyteswritten1,dwsize2);
 107             memcpy(lpbuf2,dma_buffer+dwbyteswritten1,dwbyteswritten2);
 108         }
 109         buf_off = (buf_off + dwbyteswritten1 + dwbyteswritten2) % DSBUFLEN;
 110
 111         result = IDirectSoundBuffer_Unlock(lpdsbuf,lpbuf1,dwbyteswritten1,lpbuf2,dwbyteswritten2);
 112         if (result!=DS_OK)
 113             ERR("Unable to unlock sound buffer !\n");
 114
 115         SamplesCount -= size;
 116         if (!SamplesCount) {
 117             DOSVM_QueueEvent(SB_IRQ,SB_IRQ_PRI,NULL,NULL);
 118             dma_enable = 0;
 119         }
 120     }
 121     return 0;
 122 }
 123
 124 BOOL SB_Init()
 125 {
 126     HRESULT result;
 127
 128     if (!lpdsound) {
 129         hmodule = LoadLibraryA("dsound.dll");
 130         if (!hmodule) {
 131             ERR("Can't load dsound.dll !\n");
 132             return 0;
 133         }
 134         lpDirectSoundCreate = (fnDirectSoundCreate)GetProcAddress(hmodule,"DirectSoundCreate");
 135         if (!lpDirectSoundCreate) {
 136             /* CloseHandle(hmodule); */
 137             ERR("Can't find DirectSoundCreate function !\n");
 138             return 0;
 139         }
 140         result = (*lpDirectSoundCreate)(NULL,&lpdsound,NULL);
 141         if (result != DS_OK) {
 142             ERR("Unable to initialize Sound Subsystem err = %lx !\n",result);
 143             return 0;
 144         }
 145
 146         /* FIXME: To uncomment when :
 147            - SetCooperative level is correctly implemented
 148            - an always valid and non changing handle to a windows  (vga_hwnd) is available
 149              (this surely needs some work in vga.c)
 150         result = IDirectSound_SetCooperativeLevel(lpdsound,vga_hwnd,DSSCL_EXCLUSIVE|DSSCL_PRIORITY);
 151         if (result != DS_OK) {
 152             ERR("Can't set cooperative level !\n");
 153             return 0;
 154         }
 155         */
 156
 157         /* Default format */
 158         wav_fmt.wFormatTag = WAVE_FORMAT_PCM;
 159         wav_fmt.nChannels = 1;
 160         wav_fmt.nSamplesPerSec = 22050;
 161         wav_fmt.nAvgBytesPerSec = 22050;
 162         wav_fmt.nBlockAlign = 1;
 163         wav_fmt.wBitsPerSample = 8;
 164         wav_fmt.cbSize = 0;
 165
 166         memset(&buf_desc,0,sizeof(DSBUFFERDESC));
 167         buf_desc.dwSize = sizeof(DSBUFFERDESC);
 168         buf_desc.dwBufferBytes = DSBUFLEN;
 169         buf_desc.lpwfxFormat = &wav_fmt;
 170         result = IDirectSound_CreateSoundBuffer(lpdsound,&buf_desc,&lpdsbuf,NULL);
 171         if (result != DS_OK) {
 172             ERR("Can't create sound buffer !\n");
 173             return 0;
 174         }
 175
 176         result = IDirectSoundBuffer_Play(lpdsbuf,0, 0, DSBPLAY_LOOPING);
 177         if (result != DS_OK) {
 178             ERR("Can't start playing !\n");
 179             return 0;
 180         }
 181
 182         buf_off = 0;
 183         end_sound_loop = 0;
 184         SB_Thread = CreateThread(NULL, 0, SB_Poll, NULL, 0, NULL);
 185         TRACE("thread\n");
 186         if (!SB_Thread) {
 187             ERR("Can't create thread !\n");
 188             return 0;
 189         }
 190     }
 191     return 1;
 192 }
 193
 194 void SB_Reset()
 195 {
 196     int i;
 197
 198     for(i=0;i<256;i++)
 199         DSP_Command[i]=0;
 200
 201     /* Set Time Constant */
 202     DSP_Command[0x40]=1;
 203     /* Generate IRQ */
 204     DSP_Command[0xF2]=0;
 205     /* DMA DAC 8-bits */
 206     DSP_Command[0x14]=2;
 207     /* Generic DAC/ADC DMA (16-bit, 8-bit) */
 208     for(i=0xB0;i<=0xCF;i++)
 209         DSP_Command[i]=3;
 210     /* DSP Indentification */
 211     DSP_Command[0xE0]=1;
 212
 213     /* Clear command and input buffer */
 214     command = -1;
 215     InSize = 0;
 216
 217     /* Put a garbage value in the output buffer */
 218     OutSize = 1;
 219     if (SB_Init())
 220         /* All right, let's put the magic value for autodetection */
 221         DSP_OutBuffer[0] = 0xaa;
 222     else
 223         /* Something is wrong, put 0 to failed audetection */
 224         DSP_OutBuffer[0] = 0x00;
 225 }
 226
 227 /* Find a standard sampling rate for DirectSound */
 228 int SB_StdSampleRate(int SampleRate)
 229 {
 230   if (SampleRate>((44100+48000)/2)) return 48000;
 231   if (SampleRate>((32000+44100)/2)) return 44100;
 232   if (SampleRate>((24000+32000)/2)) return 32000;
 233   if (SampleRate>((22050+24000)/2)) return 24000;
 234   if (SampleRate>((16000+22050)/2)) return 22050;
 235   if (SampleRate>((12000+16000)/2)) return 16000;
 236   if (SampleRate>((11025+12000)/2)) return 12000;
 237   if (SampleRate>((8000+11025)/2))  return 11025;
 238   return 8000;
 239 }
 240
 241 void SB_ioport_out( WORD port, BYTE val )
 242 {
 243     switch(port)
 244     {
 245     /* DSP - Reset */
 246     case 0x226:
 247         TRACE("Resetting DSP.\n");
 248         SB_Reset();
 249         break;
 250     /* DSP - Write Data or Command */
 251     case 0x22c:
 252         TRACE("val=%x\n",val);
 253         if (command == -1) {
 254           /* Clear input buffer and set the current command */
 255           command = val;
 256           InSize = 0;
 257         }
 258         if (InSize!=DSP_Command[command])
 259            /* Fill the input buffer the command parameters if any */
 260            DSP_InBuffer[InSize++]=val;
 261         else {
 262             /* Process command */
 263             switch(command)
 264             {
 265             case 0x10: /* SB */
 266                 FIXME("Direct DAC (8-bit) - Not Implemented\n");
 267                 break;
 268             case 0x14: /* SB */
 269                 SamplesCount = DSP_InBuffer[1]+(val<<8)+1;
 270                 TRACE("DMA DAC (8-bit) for %x samples\n",SamplesCount);
 271                 dma_enable = 1;
 272                 break;
 273             case 0x20:
 274                 FIXME("Direct ADC (8-bit) - Not Implemented\n");
 275                 break;
 276             case 0x24: /* SB */
 277                 FIXME("DMA ADC (8-bit) - Not Implemented\n");
 278                 break;
 279             case 0x40: /* SB */
 280                 SampleRate = 1000000/(256-val);
 281                 TRACE("Set Time Constant (%d <-> %d Hz => %d Hz)\n",DSP_InBuffer[0],
 282                     SampleRate,SB_StdSampleRate(SampleRate));
 283                 SampleRate = SB_StdSampleRate(SampleRate);
 284                 wav_fmt.nSamplesPerSec = SampleRate;
 285                 wav_fmt.nAvgBytesPerSec = SampleRate;
 286                 IDirectSoundBuffer_SetFormat(lpdsbuf,&wav_fmt);
 287                 break;
 288             /* case 0xBX/0xCX -> See below */
 289             case 0xD0: /* SB */
 290                 TRACE("Halt DMA operation (8-bit)\n");
 291                 dma_enable = 0;
 292                 break;
 293             case 0xD1: /* SB */
 294                 FIXME("Enable Speaker - Not Implemented\n");
 295                 break;
 296             case 0xD3: /* SB */
 297                 FIXME("Disable Speaker - Not Implemented\n");
 298                 break;
 299             case 0xD4: /* SB */
 300                 FIXME("Continue DMA operation (8-bit) - Not Implemented\n");
 301                 break;
 302             case 0xD8: /* SB */
 303                 FIXME("Speaker Status - Not Implemented\n");
 304                 break;
 305             case 0xE0: /* SB 2.0 */
 306                 TRACE("DSP Identification\n");
 307                 DSP_OutBuffer[OutSize++] = ~val;
 308                 break;
 309             case 0xE1: /* SB */
 310                TRACE("DSP Version\n");
 311                OutSize=2;
 312                DSP_OutBuffer[0]=0; /* returns version 1.0 */
 313                DSP_OutBuffer[1]=1;
 314                 break;
 315             case 0xF2: /* SB */
 316                 TRACE("IRQ Request (8-bit)\n");
 317                 DOSVM_QueueEvent(SB_IRQ,SB_IRQ_PRI,NULL,NULL);
 318                 break;
 319             default:
 320               if (((command&0xF0)==0xB0)||((DSP_InBuffer[0]&0xF0)==0xC0)) {
 321                     /* SB16 */
 322                     FIXME("Generic DAC/ADC DMA (16-bit, 8-bit) - %d % d\n",command,DSP_InBuffer[1]);
 323                     if (command&0x02)
 324                         FIXME("Generic DAC/ADC fifo mode not supported\n");
 325                     if (command&0x04)
 326                         FIXME("Generic DAC/ADC autoinit dma mode not supported\n");
 327                     if (command&0x08)
 328                         FIXME("Generic DAC/ADC adc mode not supported\n");
 329                     switch(command>>4) {
 330                     case 0xB:
 331                         FIXME("Generic DAC/ADC 8-bit not supported\n");
 332                         SampleMode = 0;
 333                         break;
 334                     case 0xC:
 335                         FIXME("Generic DAC/ADC 16-bit not supported\n");
 336                         SampleMode = 1;
 337                         break;
 338                     default:
 339                         ERR("Generic DAC/ADC resolution unknown\n");
 340                         break;
 341                     }
 342                     if (DSP_InBuffer[1]&0x010)
 343                         FIXME("Generic DAC/ADC signed sample mode not supported\n");
 344                     if (DSP_InBuffer[1]&0x020)
 345                         FIXME("Generic DAC/ADC stereo mode not supported\n");
 346                     SamplesCount = DSP_InBuffer[2]+(val<<8)+1;
 347                     TRACE("Generic DMA for %x samples\n",SamplesCount);
 348                     dma_enable = 1;
 349                 }
 350                 else
 351                     FIXME("DSP command %x not supported\n",val);
 352             }
 353             /* Empty the input buffer and end the command */
 354             InSize = 0;
 355             command = -1;
 356         }
 357     }
 358 }
 359
 360 BYTE SB_ioport_in( WORD port )
 361 {
 362     BYTE res = 0;
 363
 364     switch(port)
 365     {
 366     /* DSP Read Data */
 367     case 0x22a:
 368         /* Value in the read buffer */
 369       if (OutSize)
 370           res = DSP_OutBuffer[--OutSize];
 371       else
 372           /* return the last byte */
 373           res = DSP_OutBuffer[0];
 374       break;
 375     /* DSP - Write Buffer Status */
 376     case 0x22c:
 377         /* DSP always ready for writing */
 378         res = 0x00;
 379         break;
 380     /* DSP - Data Available Status */
 381     /* DSP - IRQ Acknowledge, 8-bit */
 382     case 0x22e:
 383         /* DSP data availability check */
 384         if (OutSize)
 385             res = 0x80;
 386         else
 387             res = 0x00;
 388         break;
 389     }
 390     return res;
 391 }