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 BOOL end_sound_loop = FALSE;
  52 static BOOL dma_enable = FALSE;
  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) dma_enable = FALSE;
 114     }
 115     return 0;
 116 }
 117
 118 static BOOL SB_Init(void)
 119 {
 120     HRESULT result;
 121
 122     if (!lpdsound) {
 123         result = DirectSoundCreate(NULL,&lpdsound,NULL);
 124         if (result != DS_OK) {
 125             ERR("Unable to initialize Sound Subsystem err = %x !\n",result);
 126             return FALSE;
 127         }
 128
 129         /* FIXME: To uncomment when :
 130            - SetCooperative level is correctly implemented
 131            - an always valid and non changing handle to a windows  (vga_hwnd) is available
 132              (this surely needs some work in vga.c)
 133         result = IDirectSound_SetCooperativeLevel(lpdsound,vga_hwnd,DSSCL_EXCLUSIVE|DSSCL_PRIORITY);
 134         if (result != DS_OK) {
 135             ERR("Can't set cooperative level !\n");
 136             return FALSE;
 137         }
 138         */
 139
 140         /* Default format */
 141         wav_fmt.wFormatTag = WAVE_FORMAT_PCM;
 142         wav_fmt.nChannels = 1;
 143         wav_fmt.nSamplesPerSec = 22050;
 144         wav_fmt.nAvgBytesPerSec = 22050;
 145         wav_fmt.nBlockAlign = 1;
 146         wav_fmt.wBitsPerSample = 8;
 147         wav_fmt.cbSize = 0;
 148
 149         memset(&buf_desc,0,sizeof(DSBUFFERDESC));
 150         buf_desc.dwSize = sizeof(DSBUFFERDESC);
 151         buf_desc.dwBufferBytes = DSBUFLEN;
 152         buf_desc.lpwfxFormat = &wav_fmt;
 153         result = IDirectSound_CreateSoundBuffer(lpdsound,&buf_desc,&lpdsbuf,NULL);
 154         if (result != DS_OK) {
 155             ERR("Can't create sound buffer !\n");
 156             return FALSE;
 157         }
 158
 159         result = IDirectSoundBuffer_Play(lpdsbuf,0, 0, DSBPLAY_LOOPING);
 160         if (result != DS_OK) {
 161             ERR("Can't start playing !\n");
 162             return FALSE;
 163         }
 164
 165         buf_off = 0;
 166         end_sound_loop = FALSE;
 167         SB_Thread = CreateThread(NULL, 0, SB_Poll, NULL, 0, NULL);
 168         TRACE("thread\n");
 169         if (!SB_Thread) {
 170             ERR("Can't create thread !\n");
 171             return FALSE;
 172         }
 173     }
 174     return TRUE;
 175 }
 176
 177 static void SB_Reset(void)
 178 {
 179     int i;
 180
 181     for(i=0;i<256;i++)
 182         DSP_Command[i]=0;
 183
 184     /* Set Time Constant */
 185     DSP_Command[0x40]=1;
 186     /* Generate IRQ */
 187     DSP_Command[0xF2]=0;
 188     /* DMA DAC 8-bits */
 189     DSP_Command[0x14]=2;
 190     /* Generic DAC/ADC DMA (16-bit, 8-bit) */
 191     for(i=0xB0;i<=0xCF;i++)
 192         DSP_Command[i]=3;
 193     /* DSP Identification */
 194     DSP_Command[0xE0]=1;
 195
 196     /* Clear command and input buffer */
 197     command = -1;
 198     InSize = 0;
 199
 200     /* Put a garbage value in the output buffer */
 201     OutSize = 1;
 202     if (SB_Init())
 203         /* All right, let's put the magic value for autodetection */
 204         DSP_OutBuffer[0] = 0xaa;
 205     else
 206         /* Something is wrong, put 0 to failed autodetection */
 207         DSP_OutBuffer[0] = 0x00;
 208 }
 209
 210 /* Find a standard sampling rate for DirectSound */
 211 static int SB_StdSampleRate(int SampleRate)
 212 {
 213   if (SampleRate>((44100+48000)/2)) return 48000;
 214   if (SampleRate>((32000+44100)/2)) return 44100;
 215   if (SampleRate>((24000+32000)/2)) return 32000;
 216   if (SampleRate>((22050+24000)/2)) return 24000;
 217   if (SampleRate>((16000+22050)/2)) return 22050;
 218   if (SampleRate>((12000+16000)/2)) return 16000;
 219   if (SampleRate>((11025+12000)/2)) return 12000;
 220   if (SampleRate>((8000+11025)/2))  return 11025;
 221   return 8000;
 222 }
 223
 224 void SB_ioport_out( WORD port, BYTE val )
 225 {
 226     switch(port)
 227     {
 228     /* DSP - Reset */
 229     case 0x226:
 230         TRACE("Resetting DSP.\n");
 231         SB_Reset();
 232         break;
 233     /* DSP - Write Data or Command */
 234     case 0x22c:
 235         TRACE("val=%x\n",val);
 236         if (command == -1) {
 237           /* Clear input buffer and set the current command */
 238           command = val;
 239           InSize = 0;
 240         }
 241         if (InSize!=DSP_Command[command])
 242            /* Fill the input buffer the command parameters if any */
 243            DSP_InBuffer[InSize++]=val;
 244         else {
 245             /* Process command */
 246             switch(command)
 247             {
 248             case 0x10: /* SB */
 249                 FIXME("Direct DAC (8-bit) - Not Implemented\n");
 250                 break;
 251             case 0x14: /* SB */
 252                 SamplesCount = DSP_InBuffer[1]+(val<<8)+1;
 253                 TRACE("DMA DAC (8-bit) for %x samples\n",SamplesCount);
 254                 dma_enable = TRUE;
 255                 break;
 256             case 0x20:
 257                 FIXME("Direct ADC (8-bit) - Not Implemented\n");
 258                 break;
 259             case 0x24: /* SB */
 260                 FIXME("DMA ADC (8-bit) - Not Implemented\n");
 261                 break;
 262             case 0x40: /* SB */
 263                 SampleRate = 1000000/(256-val);
 264                 TRACE("Set Time Constant (%d <-> %d Hz => %d Hz)\n",DSP_InBuffer[0],
 265                     SampleRate,SB_StdSampleRate(SampleRate));
 266                 SampleRate = SB_StdSampleRate(SampleRate);
 267                 wav_fmt.nSamplesPerSec = SampleRate;
 268                 wav_fmt.nAvgBytesPerSec = SampleRate;
 269                 IDirectSoundBuffer_SetFormat(lpdsbuf,&wav_fmt);
 270                 break;
 271             /* case 0xBX/0xCX -> See below */
 272             case 0xD0: /* SB */
 273                 TRACE("Halt DMA operation (8-bit)\n");
 274                 dma_enable = FALSE;
 275                 break;
 276             case 0xD1: /* SB */
 277                 FIXME("Enable Speaker - Not Implemented\n");
 278                 break;
 279             case 0xD3: /* SB */
 280                 FIXME("Disable Speaker - Not Implemented\n");
 281                 break;
 282             case 0xD4: /* SB */
 283                 FIXME("Continue DMA operation (8-bit) - Not Implemented\n");
 284                 break;
 285             case 0xD8: /* SB */
 286                 FIXME("Speaker Status - Not Implemented\n");
 287                 break;
 288             case 0xE0: /* SB 2.0 */
 289                 TRACE("DSP Identification\n");
 290                 DSP_OutBuffer[OutSize++] = ~val;
 291                 break;
 292             case 0xE1: /* SB */
 293                TRACE("DSP Version\n");
 294                OutSize=2;
 295                DSP_OutBuffer[0]=0; /* returns version 1.0 */
 296                DSP_OutBuffer[1]=1;
 297                 break;
 298             case 0xF2: /* SB */
 299                 TRACE("IRQ Request (8-bit)\n");
 300                 break;
 301             default:
 302               if (((command&0xF0)==0xB0)||((DSP_InBuffer[0]&0xF0)==0xC0)) {
 303                     /* SB16 */
 304                     FIXME("Generic DAC/ADC DMA (16-bit, 8-bit) - %d % d\n",command,DSP_InBuffer[1]);
 305                     if (command&0x02)
 306                         FIXME("Generic DAC/ADC fifo mode not supported\n");
 307                     if (command&0x04)
 308                         FIXME("Generic DAC/ADC autoinit dma mode not supported\n");
 309                     if (command&0x08)
 310                         FIXME("Generic DAC/ADC adc mode not supported\n");
 311                     switch(command>>4) {
 312                     case 0xB:
 313                         FIXME("Generic DAC/ADC 8-bit not supported\n");
 314                         SampleMode = 0;
 315                         break;
 316                     case 0xC:
 317                         FIXME("Generic DAC/ADC 16-bit not supported\n");
 318                         SampleMode = 1;
 319                         break;
 320                     default:
 321                         ERR("Generic DAC/ADC resolution unknown\n");
 322                         break;
 323                     }
 324                     if (DSP_InBuffer[1]&0x010)
 325                         FIXME("Generic DAC/ADC signed sample mode not supported\n");
 326                     if (DSP_InBuffer[1]&0x020)
 327                         FIXME("Generic DAC/ADC stereo mode not supported\n");
 328                     SamplesCount = DSP_InBuffer[2]+(val<<8)+1;
 329                     TRACE("Generic DMA for %x samples\n",SamplesCount);
 330                     dma_enable = TRUE;
 331                 }
 332                 else
 333                     FIXME("DSP command %x not supported\n",val);
 334             }
 335             /* Empty the input buffer and end the command */
 336             InSize = 0;
 337             command = -1;
 338         }
 339     }
 340 }
 341
 342 BYTE SB_ioport_in( WORD port )
 343 {
 344     BYTE res = 0;
 345
 346     switch(port)
 347     {
 348     /* DSP Read Data */
 349     case 0x22a:
 350         /* Value in the read buffer */
 351       if (OutSize)
 352           res = DSP_OutBuffer[--OutSize];
 353       else
 354           /* return the last byte */
 355           res = DSP_OutBuffer[0];
 356       break;
 357     /* DSP - Write Buffer Status */
 358     case 0x22c:
 359         /* DSP always ready for writing */
 360         res = 0x00;
 361         break;
 362     /* DSP - Data Available Status */
 363     /* DSP - IRQ Acknowledge, 8-bit */
 364     case 0x22e:
 365         /* DSP data availability check */
 366         if (OutSize)
 367             res = 0x80;
 368         else
 369             res = 0x00;
 370         break;
 371     }
 372     return res;
 373 }