| /* |
| * Soundblaster Emulation |
| * |
| * Copyright 2002 Christian Costa |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| #include "config.h" |
| |
| #include <stdarg.h> |
| |
| #include "windef.h" |
| #include "winbase.h" |
| #include "dosexe.h" |
| #include "wine/debug.h" |
| #include "wingdi.h" |
| #include "mmsystem.h" |
| #include "dsound.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(sblaster); |
| |
| /* Board Configuration */ |
| /* FIXME: Should be in a config file */ |
| #define SB_IRQ 5 |
| #define SB_IRQ_PRI 11 |
| #define SB_DMA 1 |
| |
| /* Soundblaster state */ |
| static int SampleMode; /* Mono / Stereo */ |
| static int SampleRate; |
| static int SamplesCount; |
| static BYTE DSP_Command[256]; /* Store param numbers in bytes for each command */ |
| static BYTE DSP_InBuffer[10]; /* Store DSP command bytes parameters from host */ |
| static int InSize; /* Nb of bytes in InBuffer */ |
| static BYTE DSP_OutBuffer[10]; /* Store DSP information bytes to host */ |
| static int OutSize; /* Nb of bytes in InBuffer */ |
| static int command; /* Current command */ |
| static BOOL end_sound_loop = FALSE; |
| static BOOL dma_enable = FALSE; |
| |
| /* The maximum size of a dma transfer can be 65536 */ |
| #define DMATRFSIZE 1024 |
| |
| /* DMA can perform 8 or 16-bit transfer */ |
| static BYTE dma_buffer[DMATRFSIZE*2]; |
| |
| /* Direct Sound buffer config */ |
| #define DSBUFLEN 4096 /* FIXME: Only this value seems to work */ |
| |
| /* Direct Sound playback stuff */ |
| static LPDIRECTSOUND lpdsound; |
| static LPDIRECTSOUNDBUFFER lpdsbuf; |
| static DSBUFFERDESC buf_desc; |
| static WAVEFORMATEX wav_fmt; |
| static HANDLE SB_Thread; |
| static UINT buf_off; |
| extern HWND vga_hwnd; |
| |
| /* SB_Poll performs DMA transfers and fills the Direct Sound Buffer */ |
| static DWORD CALLBACK SB_Poll( void *dummy ) |
| { |
| HRESULT result; |
| LPBYTE lpbuf1 = NULL; |
| LPBYTE lpbuf2 = NULL; |
| DWORD dwsize1 = 0; |
| DWORD dwsize2 = 0; |
| DWORD dwbyteswritten1 = 0; |
| DWORD dwbyteswritten2 = 0; |
| int size; |
| |
| /* FIXME: this loop must be improved */ |
| while(!end_sound_loop) |
| { |
| Sleep(10); |
| |
| if (dma_enable) { |
| size = DMA_Transfer(SB_DMA,min(DMATRFSIZE,SamplesCount),dma_buffer); |
| } else |
| continue; |
| |
| result = IDirectSoundBuffer_Lock(lpdsbuf,buf_off,size,(LPVOID *)&lpbuf1,&dwsize1,(LPVOID *)&lpbuf2,&dwsize2,0); |
| if (result != DS_OK) { |
| ERR("Unable to lock sound buffer !\n"); |
| continue; |
| } |
| |
| dwbyteswritten1 = min(size,dwsize1); |
| memcpy(lpbuf1,dma_buffer,dwbyteswritten1); |
| if (size>dwsize1) { |
| dwbyteswritten2 = min(size - dwbyteswritten1,dwsize2); |
| memcpy(lpbuf2,dma_buffer+dwbyteswritten1,dwbyteswritten2); |
| } |
| buf_off = (buf_off + dwbyteswritten1 + dwbyteswritten2) % DSBUFLEN; |
| |
| result = IDirectSoundBuffer_Unlock(lpdsbuf,lpbuf1,dwbyteswritten1,lpbuf2,dwbyteswritten2); |
| if (result!=DS_OK) |
| ERR("Unable to unlock sound buffer !\n"); |
| |
| SamplesCount -= size; |
| if (!SamplesCount) { |
| DOSVM_QueueEvent(SB_IRQ,SB_IRQ_PRI,NULL,NULL); |
| dma_enable = FALSE; |
| } |
| } |
| return 0; |
| } |
| |
| static BOOL SB_Init(void) |
| { |
| HRESULT result; |
| |
| if (!lpdsound) { |
| result = DirectSoundCreate(NULL,&lpdsound,NULL); |
| if (result != DS_OK) { |
| ERR("Unable to initialize Sound Subsystem err = %x !\n",result); |
| return FALSE; |
| } |
| |
| /* FIXME: To uncomment when : |
| - SetCooperative level is correctly implemented |
| - an always valid and non changing handle to a windows (vga_hwnd) is available |
| (this surely needs some work in vga.c) |
| result = IDirectSound_SetCooperativeLevel(lpdsound,vga_hwnd,DSSCL_EXCLUSIVE|DSSCL_PRIORITY); |
| if (result != DS_OK) { |
| ERR("Can't set cooperative level !\n"); |
| return FALSE; |
| } |
| */ |
| |
| /* Default format */ |
| wav_fmt.wFormatTag = WAVE_FORMAT_PCM; |
| wav_fmt.nChannels = 1; |
| wav_fmt.nSamplesPerSec = 22050; |
| wav_fmt.nAvgBytesPerSec = 22050; |
| wav_fmt.nBlockAlign = 1; |
| wav_fmt.wBitsPerSample = 8; |
| wav_fmt.cbSize = 0; |
| |
| memset(&buf_desc,0,sizeof(DSBUFFERDESC)); |
| buf_desc.dwSize = sizeof(DSBUFFERDESC); |
| buf_desc.dwBufferBytes = DSBUFLEN; |
| buf_desc.lpwfxFormat = &wav_fmt; |
| result = IDirectSound_CreateSoundBuffer(lpdsound,&buf_desc,&lpdsbuf,NULL); |
| if (result != DS_OK) { |
| ERR("Can't create sound buffer !\n"); |
| return FALSE; |
| } |
| |
| result = IDirectSoundBuffer_Play(lpdsbuf,0, 0, DSBPLAY_LOOPING); |
| if (result != DS_OK) { |
| ERR("Can't start playing !\n"); |
| return FALSE; |
| } |
| |
| buf_off = 0; |
| end_sound_loop = FALSE; |
| SB_Thread = CreateThread(NULL, 0, SB_Poll, NULL, 0, NULL); |
| TRACE("thread\n"); |
| if (!SB_Thread) { |
| ERR("Can't create thread !\n"); |
| return FALSE; |
| } |
| } |
| return TRUE; |
| } |
| |
| static void SB_Reset(void) |
| { |
| int i; |
| |
| for(i=0;i<256;i++) |
| DSP_Command[i]=0; |
| |
| /* Set Time Constant */ |
| DSP_Command[0x40]=1; |
| /* Generate IRQ */ |
| DSP_Command[0xF2]=0; |
| /* DMA DAC 8-bits */ |
| DSP_Command[0x14]=2; |
| /* Generic DAC/ADC DMA (16-bit, 8-bit) */ |
| for(i=0xB0;i<=0xCF;i++) |
| DSP_Command[i]=3; |
| /* DSP Identification */ |
| DSP_Command[0xE0]=1; |
| |
| /* Clear command and input buffer */ |
| command = -1; |
| InSize = 0; |
| |
| /* Put a garbage value in the output buffer */ |
| OutSize = 1; |
| if (SB_Init()) |
| /* All right, let's put the magic value for autodetection */ |
| DSP_OutBuffer[0] = 0xaa; |
| else |
| /* Something is wrong, put 0 to failed autodetection */ |
| DSP_OutBuffer[0] = 0x00; |
| } |
| |
| /* Find a standard sampling rate for DirectSound */ |
| static int SB_StdSampleRate(int SampleRate) |
| { |
| if (SampleRate>((44100+48000)/2)) return 48000; |
| if (SampleRate>((32000+44100)/2)) return 44100; |
| if (SampleRate>((24000+32000)/2)) return 32000; |
| if (SampleRate>((22050+24000)/2)) return 24000; |
| if (SampleRate>((16000+22050)/2)) return 22050; |
| if (SampleRate>((12000+16000)/2)) return 16000; |
| if (SampleRate>((11025+12000)/2)) return 12000; |
| if (SampleRate>((8000+11025)/2)) return 11025; |
| return 8000; |
| } |
| |
| void SB_ioport_out( WORD port, BYTE val ) |
| { |
| switch(port) |
| { |
| /* DSP - Reset */ |
| case 0x226: |
| TRACE("Resetting DSP.\n"); |
| SB_Reset(); |
| break; |
| /* DSP - Write Data or Command */ |
| case 0x22c: |
| TRACE("val=%x\n",val); |
| if (command == -1) { |
| /* Clear input buffer and set the current command */ |
| command = val; |
| InSize = 0; |
| } |
| if (InSize!=DSP_Command[command]) |
| /* Fill the input buffer the command parameters if any */ |
| DSP_InBuffer[InSize++]=val; |
| else { |
| /* Process command */ |
| switch(command) |
| { |
| case 0x10: /* SB */ |
| FIXME("Direct DAC (8-bit) - Not Implemented\n"); |
| break; |
| case 0x14: /* SB */ |
| SamplesCount = DSP_InBuffer[1]+(val<<8)+1; |
| TRACE("DMA DAC (8-bit) for %x samples\n",SamplesCount); |
| dma_enable = TRUE; |
| break; |
| case 0x20: |
| FIXME("Direct ADC (8-bit) - Not Implemented\n"); |
| break; |
| case 0x24: /* SB */ |
| FIXME("DMA ADC (8-bit) - Not Implemented\n"); |
| break; |
| case 0x40: /* SB */ |
| SampleRate = 1000000/(256-val); |
| TRACE("Set Time Constant (%d <-> %d Hz => %d Hz)\n",DSP_InBuffer[0], |
| SampleRate,SB_StdSampleRate(SampleRate)); |
| SampleRate = SB_StdSampleRate(SampleRate); |
| wav_fmt.nSamplesPerSec = SampleRate; |
| wav_fmt.nAvgBytesPerSec = SampleRate; |
| IDirectSoundBuffer_SetFormat(lpdsbuf,&wav_fmt); |
| break; |
| /* case 0xBX/0xCX -> See below */ |
| case 0xD0: /* SB */ |
| TRACE("Halt DMA operation (8-bit)\n"); |
| dma_enable = FALSE; |
| break; |
| case 0xD1: /* SB */ |
| FIXME("Enable Speaker - Not Implemented\n"); |
| break; |
| case 0xD3: /* SB */ |
| FIXME("Disable Speaker - Not Implemented\n"); |
| break; |
| case 0xD4: /* SB */ |
| FIXME("Continue DMA operation (8-bit) - Not Implemented\n"); |
| break; |
| case 0xD8: /* SB */ |
| FIXME("Speaker Status - Not Implemented\n"); |
| break; |
| case 0xE0: /* SB 2.0 */ |
| TRACE("DSP Identification\n"); |
| DSP_OutBuffer[OutSize++] = ~val; |
| break; |
| case 0xE1: /* SB */ |
| TRACE("DSP Version\n"); |
| OutSize=2; |
| DSP_OutBuffer[0]=0; /* returns version 1.0 */ |
| DSP_OutBuffer[1]=1; |
| break; |
| case 0xF2: /* SB */ |
| TRACE("IRQ Request (8-bit)\n"); |
| DOSVM_QueueEvent(SB_IRQ,SB_IRQ_PRI,NULL,NULL); |
| break; |
| default: |
| if (((command&0xF0)==0xB0)||((DSP_InBuffer[0]&0xF0)==0xC0)) { |
| /* SB16 */ |
| FIXME("Generic DAC/ADC DMA (16-bit, 8-bit) - %d % d\n",command,DSP_InBuffer[1]); |
| if (command&0x02) |
| FIXME("Generic DAC/ADC fifo mode not supported\n"); |
| if (command&0x04) |
| FIXME("Generic DAC/ADC autoinit dma mode not supported\n"); |
| if (command&0x08) |
| FIXME("Generic DAC/ADC adc mode not supported\n"); |
| switch(command>>4) { |
| case 0xB: |
| FIXME("Generic DAC/ADC 8-bit not supported\n"); |
| SampleMode = 0; |
| break; |
| case 0xC: |
| FIXME("Generic DAC/ADC 16-bit not supported\n"); |
| SampleMode = 1; |
| break; |
| default: |
| ERR("Generic DAC/ADC resolution unknown\n"); |
| break; |
| } |
| if (DSP_InBuffer[1]&0x010) |
| FIXME("Generic DAC/ADC signed sample mode not supported\n"); |
| if (DSP_InBuffer[1]&0x020) |
| FIXME("Generic DAC/ADC stereo mode not supported\n"); |
| SamplesCount = DSP_InBuffer[2]+(val<<8)+1; |
| TRACE("Generic DMA for %x samples\n",SamplesCount); |
| dma_enable = TRUE; |
| } |
| else |
| FIXME("DSP command %x not supported\n",val); |
| } |
| /* Empty the input buffer and end the command */ |
| InSize = 0; |
| command = -1; |
| } |
| } |
| } |
| |
| BYTE SB_ioport_in( WORD port ) |
| { |
| BYTE res = 0; |
| |
| switch(port) |
| { |
| /* DSP Read Data */ |
| case 0x22a: |
| /* Value in the read buffer */ |
| if (OutSize) |
| res = DSP_OutBuffer[--OutSize]; |
| else |
| /* return the last byte */ |
| res = DSP_OutBuffer[0]; |
| break; |
| /* DSP - Write Buffer Status */ |
| case 0x22c: |
| /* DSP always ready for writing */ |
| res = 0x00; |
| break; |
| /* DSP - Data Available Status */ |
| /* DSP - IRQ Acknowledge, 8-bit */ |
| case 0x22e: |
| /* DSP data availability check */ |
| if (OutSize) |
| res = 0x80; |
| else |
| res = 0x00; |
| break; |
| } |
| return res; |
| } |
