418 lines
13 KiB
C
418 lines
13 KiB
C
/**
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* OpenAL cross platform audio library
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* Copyright (C) 1999-2007 by authors.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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* Or go to http://www.gnu.org/copyleft/lgpl.html
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*/
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#include "config.h"
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#define _WIN32_WINNT 0x0500
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#define INITGUID
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#include <stdlib.h>
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#include <stdio.h>
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#include <memory.h>
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#include <dsound.h>
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#include <mmreg.h>
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#include "alMain.h"
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#include "AL/al.h"
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#include "AL/alc.h"
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#ifndef DSSPEAKER_7POINT1
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#define DSSPEAKER_7POINT1 7
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#endif
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DEFINE_GUID(KSDATAFORMAT_SUBTYPE_PCM, 0x00000001, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
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// Since DSound doesn't report the fragment size, just assume 4 fragments
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#define DS_FRAGS 4
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typedef struct {
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// DirectSound Playback Device
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LPDIRECTSOUND lpDS;
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LPDIRECTSOUNDBUFFER DSpbuffer;
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LPDIRECTSOUNDBUFFER DSsbuffer;
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int killNow;
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ALvoid *thread;
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} DSoundData;
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typedef struct {
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ALCchar *name;
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GUID guid;
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} DevMap;
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static DevMap DeviceList[16];
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static ALuint DSoundProc(ALvoid *ptr)
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{
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ALCdevice *pDevice = (ALCdevice*)ptr;
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DSoundData *pData = (DSoundData*)pDevice->ExtraData;
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DWORD LastCursor = 0;
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DWORD PlayCursor;
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VOID *WritePtr1, *WritePtr2;
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DWORD WriteCnt1, WriteCnt2;
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DWORD BufferSize;
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DWORD avail;
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HRESULT err;
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BufferSize = pDevice->UpdateSize * DS_FRAGS *
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aluBytesFromFormat(pDevice->Format) *
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aluChannelsFromFormat(pDevice->Format);
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while(!pData->killNow)
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{
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// Get current play and write cursors
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IDirectSoundBuffer_GetCurrentPosition(pData->DSsbuffer, &PlayCursor, NULL);
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avail = (PlayCursor-LastCursor+BufferSize) % BufferSize;
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if(avail == 0)
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{
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Sleep(1);
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continue;
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}
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// Lock output buffer
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WriteCnt1 = 0;
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WriteCnt2 = 0;
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err = IDirectSoundBuffer_Lock(pData->DSsbuffer, LastCursor, avail, &WritePtr1, &WriteCnt1, &WritePtr2, &WriteCnt2, 0);
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// If the buffer is lost, restore it, play and lock
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if(err == DSERR_BUFFERLOST)
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{
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err = IDirectSoundBuffer_Restore(pData->DSsbuffer);
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if(SUCCEEDED(err))
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err = IDirectSoundBuffer_Play(pData->DSsbuffer, 0, 0, DSBPLAY_LOOPING);
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if(SUCCEEDED(err))
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err = IDirectSoundBuffer_Lock(pData->DSsbuffer, LastCursor, avail, &WritePtr1, &WriteCnt1, &WritePtr2, &WriteCnt2, 0);
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}
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// Successfully locked the output buffer
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if(SUCCEEDED(err))
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{
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// If we have an active context, mix data directly into output buffer otherwise fill with silence
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SuspendContext(NULL);
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aluMixData(pDevice->Context, WritePtr1, WriteCnt1, pDevice->Format);
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aluMixData(pDevice->Context, WritePtr2, WriteCnt2, pDevice->Format);
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ProcessContext(NULL);
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// Unlock output buffer only when successfully locked
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IDirectSoundBuffer_Unlock(pData->DSsbuffer, WritePtr1, WriteCnt1, WritePtr2, WriteCnt2);
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}
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else
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AL_PRINT("Buffer lock error: %#lx\n", err);
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// Update old write cursor location
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LastCursor += WriteCnt1+WriteCnt2;
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LastCursor %= BufferSize;
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}
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return 0;
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}
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static ALCboolean DSoundOpenPlayback(ALCdevice *device, const ALCchar *deviceName)
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{
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DSBUFFERDESC DSBDescription;
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DSoundData *pData = NULL;
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WAVEFORMATEXTENSIBLE OutputType;
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DWORD frameSize = 0;
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LPGUID guid = NULL;
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DWORD speakers;
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HRESULT hr;
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if(deviceName)
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{
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int i;
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for(i = 0;DeviceList[i].name;i++)
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{
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if(strcmp(deviceName, DeviceList[i].name) == 0)
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{
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device->szDeviceName = DeviceList[i].name;
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if(i > 0)
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guid = &DeviceList[i].guid;
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break;
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}
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}
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if(!DeviceList[i].name)
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return ALC_FALSE;
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}
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else
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device->szDeviceName = DeviceList[0].name;
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memset(&OutputType, 0, sizeof(OutputType));
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//Initialise requested device
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pData = calloc(1, sizeof(DSoundData));
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if(!pData)
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{
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SetALCError(ALC_OUT_OF_MEMORY);
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return ALC_FALSE;
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}
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//DirectSound Init code
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hr = DirectSoundCreate(guid, &pData->lpDS, NULL);
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if(SUCCEEDED(hr))
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hr = IDirectSound_SetCooperativeLevel(pData->lpDS, GetForegroundWindow(), DSSCL_PRIORITY);
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if(SUCCEEDED(hr))
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{
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if(*(GetConfigValue(NULL, "format", "")) != 0)
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hr = IDirectSound_GetSpeakerConfig(pData->lpDS, &speakers);
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else
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{
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if(device->Format == AL_FORMAT_MONO8 || device->Format == AL_FORMAT_MONO16)
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speakers = DSSPEAKER_COMBINED(DSSPEAKER_MONO, 0);
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else if(device->Format == AL_FORMAT_STEREO8 || device->Format == AL_FORMAT_STEREO16)
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speakers = DSSPEAKER_COMBINED(DSSPEAKER_STEREO, 0);
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else if(device->Format == AL_FORMAT_QUAD8 || device->Format == AL_FORMAT_QUAD16)
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speakers = DSSPEAKER_COMBINED(DSSPEAKER_QUAD, 0);
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else if(device->Format == AL_FORMAT_51CHN8 || device->Format == AL_FORMAT_51CHN16)
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speakers = DSSPEAKER_COMBINED(DSSPEAKER_5POINT1, 0);
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else if(device->Format == AL_FORMAT_71CHN8 || device->Format == AL_FORMAT_71CHN16)
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speakers = DSSPEAKER_COMBINED(DSSPEAKER_7POINT1, 0);
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else
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hr = IDirectSound_GetSpeakerConfig(pData->lpDS, &speakers);
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}
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}
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if(SUCCEEDED(hr))
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{
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speakers = DSSPEAKER_CONFIG(speakers);
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if(speakers == DSSPEAKER_MONO)
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{
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if(aluBytesFromFormat(device->Format) == 1)
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device->Format = AL_FORMAT_MONO8;
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else
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device->Format = AL_FORMAT_MONO16;
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}
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else if(speakers == DSSPEAKER_STEREO)
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{
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if(aluBytesFromFormat(device->Format) == 1)
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device->Format = AL_FORMAT_STEREO8;
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else
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device->Format = AL_FORMAT_STEREO16;
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}
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else if(speakers == DSSPEAKER_QUAD)
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{
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if(aluBytesFromFormat(device->Format) == 1)
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device->Format = AL_FORMAT_QUAD8;
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else
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device->Format = AL_FORMAT_QUAD16;
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OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
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SPEAKER_FRONT_RIGHT |
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SPEAKER_BACK_LEFT |
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SPEAKER_BACK_RIGHT;
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}
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else if(speakers == DSSPEAKER_5POINT1)
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{
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if(aluBytesFromFormat(device->Format) == 1)
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device->Format = AL_FORMAT_51CHN8;
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else
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device->Format = AL_FORMAT_51CHN16;
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OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
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SPEAKER_FRONT_RIGHT |
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SPEAKER_FRONT_CENTER |
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SPEAKER_LOW_FREQUENCY |
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SPEAKER_BACK_LEFT |
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SPEAKER_BACK_RIGHT;
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}
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else if(speakers == DSSPEAKER_7POINT1)
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{
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if(aluBytesFromFormat(device->Format) == 1)
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device->Format = AL_FORMAT_71CHN8;
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else
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device->Format = AL_FORMAT_71CHN16;
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OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
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SPEAKER_FRONT_RIGHT |
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SPEAKER_FRONT_CENTER |
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SPEAKER_LOW_FREQUENCY |
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SPEAKER_BACK_LEFT |
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SPEAKER_BACK_RIGHT |
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SPEAKER_SIDE_LEFT |
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SPEAKER_SIDE_RIGHT;
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}
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frameSize = aluBytesFromFormat(device->Format) *
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aluChannelsFromFormat(device->Format);
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OutputType.Format.wFormatTag = WAVE_FORMAT_PCM;
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OutputType.Format.nChannels = aluChannelsFromFormat(device->Format);
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OutputType.Format.wBitsPerSample = aluBytesFromFormat(device->Format) * 8;
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OutputType.Format.nBlockAlign = OutputType.Format.nChannels*OutputType.Format.wBitsPerSample/8;
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OutputType.Format.nSamplesPerSec = device->Frequency;
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OutputType.Format.nAvgBytesPerSec = OutputType.Format.nSamplesPerSec*OutputType.Format.nBlockAlign;
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OutputType.Format.cbSize = 0;
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device->UpdateSize /= DS_FRAGS;
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}
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if(OutputType.Format.nChannels > 2)
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{
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OutputType.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
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OutputType.Samples.wValidBitsPerSample = OutputType.Format.wBitsPerSample;
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OutputType.Format.cbSize = 22;
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OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
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}
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else
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{
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if(SUCCEEDED(hr))
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{
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memset(&DSBDescription,0,sizeof(DSBUFFERDESC));
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DSBDescription.dwSize=sizeof(DSBUFFERDESC);
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DSBDescription.dwFlags=DSBCAPS_PRIMARYBUFFER;
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hr = IDirectSound_CreateSoundBuffer(pData->lpDS, &DSBDescription, &pData->DSpbuffer, NULL);
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}
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if(SUCCEEDED(hr))
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hr = IDirectSoundBuffer_SetFormat(pData->DSpbuffer,&OutputType.Format);
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}
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if(SUCCEEDED(hr))
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{
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memset(&DSBDescription,0,sizeof(DSBUFFERDESC));
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DSBDescription.dwSize=sizeof(DSBUFFERDESC);
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DSBDescription.dwFlags=DSBCAPS_GLOBALFOCUS|DSBCAPS_GETCURRENTPOSITION2;
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DSBDescription.dwBufferBytes=device->UpdateSize * DS_FRAGS * frameSize;
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DSBDescription.lpwfxFormat=&OutputType.Format;
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hr = IDirectSound_CreateSoundBuffer(pData->lpDS, &DSBDescription, &pData->DSsbuffer, NULL);
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}
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if(SUCCEEDED(hr))
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hr = IDirectSoundBuffer_Play(pData->DSsbuffer, 0, 0, DSBPLAY_LOOPING);
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if(SUCCEEDED(hr))
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{
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device->ExtraData = pData;
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pData->thread = StartThread(DSoundProc, device);
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if(!pData->thread)
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hr = E_FAIL;
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}
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if(FAILED(hr))
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{
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if (pData->DSsbuffer)
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IDirectSoundBuffer_Release(pData->DSsbuffer);
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if (pData->DSpbuffer)
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IDirectSoundBuffer_Release(pData->DSpbuffer);
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if (pData->lpDS)
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IDirectSound_Release(pData->lpDS);
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free(pData);
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return ALC_FALSE;
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}
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return ALC_TRUE;
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}
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static void DSoundClosePlayback(ALCdevice *device)
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{
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DSoundData *pData = device->ExtraData;
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pData->killNow = 1;
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StopThread(pData->thread);
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IDirectSoundBuffer_Release(pData->DSsbuffer);
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if (pData->DSpbuffer)
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IDirectSoundBuffer_Release(pData->DSpbuffer);
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IDirectSound_Release(pData->lpDS);
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free(pData);
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device->ExtraData = NULL;
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}
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static ALCboolean DSoundOpenCapture(ALCdevice *pDevice, const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize)
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{
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(void)pDevice;
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(void)deviceName;
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(void)frequency;
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(void)format;
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(void)SampleSize;
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return ALC_FALSE;
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}
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static void DSoundCloseCapture(ALCdevice *pDevice)
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{
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(void)pDevice;
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}
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static void DSoundStartCapture(ALCdevice *pDevice)
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{
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(void)pDevice;
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}
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static void DSoundStopCapture(ALCdevice *pDevice)
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{
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(void)pDevice;
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}
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static void DSoundCaptureSamples(ALCdevice *pDevice, ALCvoid *pBuffer, ALCuint lSamples)
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{
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(void)pDevice;
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(void)pBuffer;
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(void)lSamples;
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}
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static ALCuint DSoundAvailableSamples(ALCdevice *pDevice)
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{
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(void)pDevice;
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return 0;
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}
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BackendFuncs DSoundFuncs = {
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DSoundOpenPlayback,
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DSoundClosePlayback,
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DSoundOpenCapture,
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DSoundCloseCapture,
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DSoundStartCapture,
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DSoundStopCapture,
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DSoundCaptureSamples,
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DSoundAvailableSamples
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};
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static BOOL CALLBACK DSoundEnumDevices(LPGUID guid, LPCSTR desc, LPCSTR drvname, LPVOID data)
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{
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size_t *iter = data;
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(void)drvname;
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if(guid)
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{
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char str[128];
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snprintf(str, sizeof(str), "DirectSound Software on %s", desc);
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DeviceList[*iter].name = AppendAllDeviceList(str);
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DeviceList[*iter].guid = *guid;
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(*iter)++;
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}
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else
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DeviceList[0].name = AppendDeviceList("DirectSound Software");
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return TRUE;
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}
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void alcDSoundInit(BackendFuncs *FuncList)
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{
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size_t iter = 1;
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HRESULT hr;
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*FuncList = DSoundFuncs;
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hr = DirectSoundEnumerate(DSoundEnumDevices, &iter);
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if(FAILED(hr))
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AL_PRINT("Error enumerating DirectSound devices (%#x)!\n", (unsigned int)hr);
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}
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