dsound_main.c

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/*              DirectSound
 *
 * Copyright 1998 Marcus Meissner
 * Copyright 1998 Rob Riggs
 * Copyright 2000-2002 TransGaming Technologies, Inc.
 *
 * 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
 *
 * Most thread locking is complete. There may be a few race
 * conditions still lurking.
 *
 * TODO:
 *  Implement SetCooperativeLevel properly (need to address focus issues)
 *  Implement DirectSound3DBuffers (stubs in place)
 *  Use hardware 3D support if available
 *      Add critical section locking inside Release and AddRef methods
 *      Handle static buffers - put those in hardware, non-static not in hardware
 *      Hardware DuplicateSoundBuffer
 *      Proper volume calculation for 3d buffers
 *      Remove DS_HEL_FRAGS and use mixer fragment length for it
 */
 
#include "dsound_private.h"
 
#include <winreg.h>
#include <rpcproxy.h>
 
DirectSoundDevice*  DSOUND_renderer[MAXWAVEDRIVERS];
GUID                    DSOUND_renderer_guids[MAXWAVEDRIVERS];
GUID                    DSOUND_capture_guids[MAXWAVEDRIVERS];
 
HRESULT mmErr(UINT err)
{
    switch(err) {
    case MMSYSERR_NOERROR:
        return DS_OK;
    case MMSYSERR_ALLOCATED:
        return DSERR_ALLOCATED;
    case MMSYSERR_ERROR:
    case MMSYSERR_INVALHANDLE:
    case WAVERR_STILLPLAYING:
        return DSERR_GENERIC; /* FIXME */
    case MMSYSERR_BADDEVICEID:
    case MMSYSERR_NODRIVER:
        return DSERR_NODRIVER;
    case MMSYSERR_NOMEM:
        return DSERR_OUTOFMEMORY;
    case MMSYSERR_INVALPARAM:
    case WAVERR_BADFORMAT:
    case WAVERR_UNPREPARED:
        return DSERR_INVALIDPARAM;
    case MMSYSERR_NOTSUPPORTED:
        return DSERR_UNSUPPORTED;
    default:
        FIXME("Unknown MMSYS error %d\n",err);
        return DSERR_GENERIC;
    }
}
 
/* All default settings, you most likely don't want to touch these, see wiki on UsefulRegistryKeys */
int ds_emuldriver = 0;
int ds_hel_buflen = 32768 * 2;
int ds_snd_queue_max = 10;
int ds_snd_queue_min = 6;
int ds_snd_shadow_maxsize = 2;
int ds_hw_accel = DS_HW_ACCEL_FULL;
int ds_default_sample_rate = 44100;
int ds_default_bits_per_sample = 16;
static int ds_default_playback;
static int ds_default_capture;
static HINSTANCE instance;
 
/*
 * Get a config key from either the app-specific or the default config
 */
 
static inline DWORD get_config_key( HKEY defkey, HKEY appkey, const char *name,
                                    char *buffer, DWORD size )
{
    if (appkey && !RegQueryValueExA( appkey, name, 0, NULL, (LPBYTE)buffer, &size )) return 0;
    if (defkey && !RegQueryValueExA( defkey, name, 0, NULL, (LPBYTE)buffer, &size )) return 0;
    return ERROR_FILE_NOT_FOUND;
}
 
 
/*
 * Setup the dsound options.
 */
 
void setup_dsound_options(void)
{
    char buffer[MAX_PATH+16];
    HKEY hkey, appkey = 0;
    DWORD len;
 
    buffer[MAX_PATH]='\0';
 
    /* @@ Wine registry key: HKCU\Software\Wine\DirectSound */
    if (RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\DirectSound", &hkey )) hkey = 0;
 
    len = GetModuleFileNameA( 0, buffer, MAX_PATH );
    if (len && len < MAX_PATH)
    {
        HKEY tmpkey;
        /* @@ Wine registry key: HKCU\Software\Wine\AppDefaults\app.exe\DirectSound */
        if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\AppDefaults", &tmpkey ))
        {
            char *p, *appname = buffer;
            if ((p = strrchr( appname, '/' ))) appname = p + 1;
            if ((p = strrchr( appname, '\\' ))) appname = p + 1;
            strcat( appname, "\\DirectSound" );
            TRACE("appname = [%s]\n", appname);
            if (RegOpenKeyA( tmpkey, appname, &appkey )) appkey = 0;
            RegCloseKey( tmpkey );
        }
    }
 
    /* get options */
 
    if (!get_config_key( hkey, appkey, "EmulDriver", buffer, MAX_PATH ))
        ds_emuldriver = strcmp(buffer, "N");
 
    if (!get_config_key( hkey, appkey, "HelBuflen", buffer, MAX_PATH ))
        ds_hel_buflen = atoi(buffer);
 
    if (!get_config_key( hkey, appkey, "SndQueueMax", buffer, MAX_PATH ))
        ds_snd_queue_max = atoi(buffer);
 
    if (!get_config_key( hkey, appkey, "SndQueueMin", buffer, MAX_PATH ))
        ds_snd_queue_min = atoi(buffer);
 
    if (!get_config_key( hkey, appkey, "HardwareAcceleration", buffer, MAX_PATH )) {
    if (strcmp(buffer, "Full") == 0)
        ds_hw_accel = DS_HW_ACCEL_FULL;
    else if (strcmp(buffer, "Standard") == 0)
        ds_hw_accel = DS_HW_ACCEL_STANDARD;
    else if (strcmp(buffer, "Basic") == 0)
        ds_hw_accel = DS_HW_ACCEL_BASIC;
    else if (strcmp(buffer, "Emulation") == 0)
        ds_hw_accel = DS_HW_ACCEL_EMULATION;
    }
 
    if (!get_config_key( hkey, appkey, "DefaultPlayback", buffer, MAX_PATH ))
        ds_default_playback = atoi(buffer);
 
    if (!get_config_key( hkey, appkey, "MaxShadowSize", buffer, MAX_PATH ))
        ds_snd_shadow_maxsize = atoi(buffer);
 
    if (!get_config_key( hkey, appkey, "DefaultCapture", buffer, MAX_PATH ))
        ds_default_capture = atoi(buffer);
 
    if (!get_config_key( hkey, appkey, "DefaultSampleRate", buffer, MAX_PATH ))
        ds_default_sample_rate = atoi(buffer);
 
    if (!get_config_key( hkey, appkey, "DefaultBitsPerSample", buffer, MAX_PATH ))
        ds_default_bits_per_sample = atoi(buffer);
 
    if (appkey) RegCloseKey( appkey );
    if (hkey) RegCloseKey( hkey );
 
    TRACE("ds_emuldriver = %d\n", ds_emuldriver);
    TRACE("ds_hel_buflen = %d\n", ds_hel_buflen);
    TRACE("ds_snd_queue_max = %d\n", ds_snd_queue_max);
    TRACE("ds_snd_queue_min = %d\n", ds_snd_queue_min);
    TRACE("ds_hw_accel = %s\n",
        ds_hw_accel==DS_HW_ACCEL_FULL ? "Full" :
        ds_hw_accel==DS_HW_ACCEL_STANDARD ? "Standard" :
        ds_hw_accel==DS_HW_ACCEL_BASIC ? "Basic" :
        ds_hw_accel==DS_HW_ACCEL_EMULATION ? "Emulation" :
        "Unknown");
    TRACE("ds_default_playback = %d\n", ds_default_playback);
    TRACE("ds_default_capture = %d\n", ds_default_playback);
    TRACE("ds_default_sample_rate = %d\n", ds_default_sample_rate);
    TRACE("ds_default_bits_per_sample = %d\n", ds_default_bits_per_sample);
    TRACE("ds_snd_shadow_maxsize = %d\n", ds_snd_shadow_maxsize);
}
 
static const char * get_device_id(LPCGUID pGuid)
{
    if (IsEqualGUID(&DSDEVID_DefaultPlayback, pGuid))
        return "DSDEVID_DefaultPlayback";
    else if (IsEqualGUID(&DSDEVID_DefaultVoicePlayback, pGuid))
        return "DSDEVID_DefaultVoicePlayback";
    else if (IsEqualGUID(&DSDEVID_DefaultCapture, pGuid))
        return "DSDEVID_DefaultCapture";
    else if (IsEqualGUID(&DSDEVID_DefaultVoiceCapture, pGuid))
        return "DSDEVID_DefaultVoiceCapture";
    return debugstr_guid(pGuid);
}
 
/***************************************************************************
 * GetDeviceID  [DSOUND.9]
 *
 * Retrieves unique identifier of default device specified
 *
 * PARAMS
 *    pGuidSrc  [I] Address of device GUID.
 *    pGuidDest [O] Address to receive unique device GUID.
 *
 * RETURNS
 *    Success: DS_OK
 *    Failure: DSERR_INVALIDPARAM
 *
 * NOTES
 *    pGuidSrc is a valid device GUID or DSDEVID_DefaultPlayback,
 *    DSDEVID_DefaultCapture, DSDEVID_DefaultVoicePlayback, or
 *    DSDEVID_DefaultVoiceCapture.
 *    Returns pGuidSrc if pGuidSrc is a valid device or the device
 *    GUID for the specified constants.
 */
HRESULT WINAPI GetDeviceID(LPCGUID pGuidSrc, LPGUID pGuidDest)
{
    TRACE("(%s,%p)\n", get_device_id(pGuidSrc),pGuidDest);
 
    if ( pGuidSrc == NULL) {
    WARN("invalid parameter: pGuidSrc == NULL\n");
    return DSERR_INVALIDPARAM;
    }
 
    if ( pGuidDest == NULL ) {
    WARN("invalid parameter: pGuidDest == NULL\n");
    return DSERR_INVALIDPARAM;
    }
 
    if ( IsEqualGUID( &DSDEVID_DefaultPlayback, pGuidSrc ) ||
     IsEqualGUID( &DSDEVID_DefaultVoicePlayback, pGuidSrc ) ) {
    *pGuidDest = DSOUND_renderer_guids[ds_default_playback];
        TRACE("returns %s\n", get_device_id(pGuidDest));
    return DS_OK;
    }
 
    if ( IsEqualGUID( &DSDEVID_DefaultCapture, pGuidSrc ) ||
     IsEqualGUID( &DSDEVID_DefaultVoiceCapture, pGuidSrc ) ) {
    *pGuidDest = DSOUND_capture_guids[ds_default_capture];
        TRACE("returns %s\n", get_device_id(pGuidDest));
    return DS_OK;
    }
 
    *pGuidDest = *pGuidSrc;
    TRACE("returns %s\n", get_device_id(pGuidDest));
 
    return DS_OK;
}
 
struct morecontext
{
    LPDSENUMCALLBACKA callA;
    LPVOID data;
};
 
static BOOL CALLBACK a_to_w_callback(LPGUID guid, LPCWSTR descW, LPCWSTR modW, LPVOID data)
{
    struct morecontext *context = data;
    char descA[MAXPNAMELEN], modA[MAXPNAMELEN];
 
    WideCharToMultiByte(CP_ACP, 0, descW, -1, descA, sizeof(descA), NULL, NULL);
    WideCharToMultiByte(CP_ACP, 0, modW, -1, modA, sizeof(modA), NULL, NULL);
 
    return context->callA(guid, descA, modA, context->data);
}
 
/***************************************************************************
 * DirectSoundEnumerateA [DSOUND.2]
 *
 * Enumerate all DirectSound drivers installed in the system
 *
 * PARAMS
 *    lpDSEnumCallback  [I] Address of callback function.
 *    lpContext         [I] Address of user defined context passed to callback function.
 *
 * RETURNS
 *    Success: DS_OK
 *    Failure: DSERR_INVALIDPARAM
 */
HRESULT WINAPI DirectSoundEnumerateA(
    LPDSENUMCALLBACKA lpDSEnumCallback,
    LPVOID lpContext)
{
    struct morecontext context;
 
    if (lpDSEnumCallback == NULL) {
        WARN("invalid parameter: lpDSEnumCallback == NULL\n");
        return DSERR_INVALIDPARAM;
    }
 
    context.callA = lpDSEnumCallback;
    context.data = lpContext;
 
    return DirectSoundEnumerateW(a_to_w_callback, &context);
}
 
/***************************************************************************
 * DirectSoundEnumerateW [DSOUND.3]
 *
 * Enumerate all DirectSound drivers installed in the system
 *
 * PARAMS
 *    lpDSEnumCallback  [I] Address of callback function.
 *    lpContext         [I] Address of user defined context passed to callback function.
 *
 * RETURNS
 *    Success: DS_OK
 *    Failure: DSERR_INVALIDPARAM
 */
HRESULT WINAPI DirectSoundEnumerateW(
    LPDSENUMCALLBACKW lpDSEnumCallback,
    LPVOID lpContext )
{
    unsigned devs, wod;
    WAVEOUTCAPSW capsW;
    GUID guid;
    int err;
 
    TRACE("lpDSEnumCallback = %p, lpContext = %p\n",
    lpDSEnumCallback, lpContext);
 
    if (lpDSEnumCallback == NULL) {
    WARN("invalid parameter: lpDSEnumCallback == NULL\n");
    return DSERR_INVALIDPARAM;
    }
 
    setup_dsound_options();
 
    devs = waveOutGetNumDevs();
    if (devs > 0) {
    if (GetDeviceID(&DSDEVID_DefaultPlayback, &guid) == DS_OK) {
        for (wod = 0; wod < devs; ++wod) {
                if (IsEqualGUID( &guid, &DSOUND_renderer_guids[wod] ) ) {
                    err = mmErr(waveOutGetDevCapsW(wod, &capsW, sizeof(WAVEOUTCAPSW)));
                    if (err == DS_OK) {
                        TRACE("calling lpDSEnumCallback(NULL,\"%ls\",\"%ls\",%p)\n",
                              capsW.szPname,L"Primary Sound Driver",lpContext);
                        if (lpDSEnumCallback(NULL, capsW.szPname, L"Primary Sound Driver", lpContext) == FALSE)
                            return DS_OK;
            }
        }
        }
    }
    }
 
    for (wod = 0; wod < devs; ++wod) {
        err = mmErr(waveOutGetDevCapsW(wod, &capsW, sizeof(WAVEOUTCAPSW)));
    if (err == DS_OK) {
            TRACE("calling lpDSEnumCallback(%s,\"%ls\",\"%ls\",%p)\n",
                  debugstr_guid(&DSOUND_renderer_guids[wod]),capsW.szPname,L"Primary Sound Driver",lpContext);
            if (lpDSEnumCallback(&DSOUND_renderer_guids[wod], capsW.szPname, L"Primary Sound Driver", lpContext) == FALSE)
                return DS_OK;
    }
    }
    return DS_OK;
}
 
/***************************************************************************
 * DirectSoundCaptureEnumerateA [DSOUND.7]
 *
 * Enumerate all DirectSound drivers installed in the system.
 *
 * PARAMS
 *    lpDSEnumCallback  [I] Address of callback function.
 *    lpContext         [I] Address of user defined context passed to callback function.
 *
 * RETURNS
 *    Success: DS_OK
 *    Failure: DSERR_INVALIDPARAM
 */
HRESULT WINAPI DirectSoundCaptureEnumerateA(
    LPDSENUMCALLBACKA lpDSEnumCallback,
    LPVOID lpContext)
{
    struct morecontext context;
 
    if (lpDSEnumCallback == NULL) {
        WARN("invalid parameter: lpDSEnumCallback == NULL\n");
        return DSERR_INVALIDPARAM;
    }
 
    context.callA = lpDSEnumCallback;
    context.data = lpContext;
 
    return DirectSoundCaptureEnumerateW(a_to_w_callback, &context);
}
 
/***************************************************************************
 * DirectSoundCaptureEnumerateW [DSOUND.8]
 *
 * Enumerate all DirectSound drivers installed in the system.
 *
 * PARAMS
 *    lpDSEnumCallback  [I] Address of callback function.
 *    lpContext         [I] Address of user defined context passed to callback function.
 *
 * RETURNS
 *    Success: DS_OK
 *    Failure: DSERR_INVALIDPARAM
 */
HRESULT WINAPI
DirectSoundCaptureEnumerateW(
    LPDSENUMCALLBACKW lpDSEnumCallback,
    LPVOID lpContext)
{
    unsigned devs, wid;
    WAVEINCAPSW capsW;
    GUID guid;
    int err;
 
    TRACE("(%p,%p)\n", lpDSEnumCallback, lpContext );
 
    if (lpDSEnumCallback == NULL) {
    WARN("invalid parameter: lpDSEnumCallback == NULL\n");
        return DSERR_INVALIDPARAM;
    }
 
    setup_dsound_options();
 
    devs = waveInGetNumDevs();
    if (devs > 0) {
    if (GetDeviceID(&DSDEVID_DefaultCapture, &guid) == DS_OK) {
        for (wid = 0; wid < devs; ++wid) {
                if (IsEqualGUID( &guid, &DSOUND_capture_guids[wid] ) ) {
                    err = mmErr(waveInGetDevCapsW(wid, &capsW, sizeof(WAVEINCAPSW)));
                    if (err == DS_OK) {
                        TRACE("calling lpDSEnumCallback(NULL,\"%ls\",\"%ls\",%p)\n",
                              capsW.szPname,L"Primary Sound Capture Driver",lpContext);
                        if (lpDSEnumCallback(NULL, capsW.szPname, L"Primary Sound Capture Driver", lpContext) == FALSE)
                            return DS_OK;
                    }
                }
        }
    }
    }
 
    for (wid = 0; wid < devs; ++wid) {
        err = mmErr(waveInGetDevCapsW(wid, &capsW, sizeof(WAVEINCAPSW)));
    if (err == DS_OK) {
            TRACE("calling lpDSEnumCallback(%s,\"%ls\",\"%ls\",%p)\n",
                  debugstr_guid(&DSOUND_capture_guids[wid]),capsW.szPname,L"Primary Sound Capture Driver",lpContext);
            if (lpDSEnumCallback(&DSOUND_capture_guids[wid], capsW.szPname, L"Primary Sound Capture Driver", lpContext) == FALSE)
                return DS_OK;
    }
    }
 
    return DS_OK;
}
 
/*******************************************************************************
 * DirectSound ClassFactory
 */
 
typedef  HRESULT (*FnCreateInstance)(REFIID riid, LPVOID *ppobj);
 
typedef struct {
    IClassFactory IClassFactory_iface;
    REFCLSID rclsid;
    FnCreateInstance pfnCreateInstance;
} IClassFactoryImpl;
 
static inline IClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
{
    return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
}
 
static HRESULT WINAPI
DSCF_QueryInterface(LPCLASSFACTORY iface, REFIID riid, LPVOID *ppobj)
{
    IClassFactoryImpl *This = impl_from_IClassFactory(iface);
    TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
    if (ppobj == NULL)
        return E_POINTER;
    if (IsEqualIID(riid, &IID_IUnknown) ||
        IsEqualIID(riid, &IID_IClassFactory))
    {
        *ppobj = iface;
        IUnknown_AddRef(iface);
        return S_OK;
    }
    *ppobj = NULL;
    return E_NOINTERFACE;
}
 
static ULONG WINAPI DSCF_AddRef(LPCLASSFACTORY iface)
{
    return 2;
}
 
static ULONG WINAPI DSCF_Release(LPCLASSFACTORY iface)
{
    /* static class, won't be freed */
    return 1;
}
 
static HRESULT WINAPI DSCF_CreateInstance(
    LPCLASSFACTORY iface,
    LPUNKNOWN pOuter,
    REFIID riid,
    LPVOID *ppobj)
{
    IClassFactoryImpl *This = impl_from_IClassFactory(iface);
    TRACE("(%p, %p, %s, %p)\n", This, pOuter, debugstr_guid(riid), ppobj);
 
    if (pOuter)
        return CLASS_E_NOAGGREGATION;
 
    if (ppobj == NULL) {
        WARN("invalid parameter\n");
        return DSERR_INVALIDPARAM;
    }
    *ppobj = NULL;
    return This->pfnCreateInstance(riid, ppobj);
}
 
static HRESULT WINAPI DSCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
{
    IClassFactoryImpl *This = impl_from_IClassFactory(iface);
    FIXME("(%p, %d) stub!\n", This, dolock);
    return S_OK;
}
 
static const IClassFactoryVtbl DSCF_Vtbl = {
    DSCF_QueryInterface,
    DSCF_AddRef,
    DSCF_Release,
    DSCF_CreateInstance,
    DSCF_LockServer
};
 
static IClassFactoryImpl DSOUND_CF[] = {
    { { &DSCF_Vtbl }, &CLSID_DirectSound, (FnCreateInstance)DSOUND_Create },
    { { &DSCF_Vtbl }, &CLSID_DirectSound8, (FnCreateInstance)DSOUND_Create8 },
    { { &DSCF_Vtbl }, &CLSID_DirectSoundCapture, (FnCreateInstance)DSOUND_CaptureCreate },
    { { &DSCF_Vtbl }, &CLSID_DirectSoundCapture8, (FnCreateInstance)DSOUND_CaptureCreate8 },
    { { &DSCF_Vtbl }, &CLSID_DirectSoundFullDuplex, (FnCreateInstance)DSOUND_FullDuplexCreate },
    { { &DSCF_Vtbl }, &CLSID_DirectSoundPrivate, (FnCreateInstance)IKsPrivatePropertySetImpl_Create },
    { { NULL }, NULL, NULL }
};
 
/*******************************************************************************
 * DllGetClassObject [DSOUND.@]
 * Retrieves class object from a DLL object
 *
 * NOTES
 *    Docs say returns STDAPI
 *
 * PARAMS
 *    rclsid [I] CLSID for the class object
 *    riid   [I] Reference to identifier of interface for class object
 *    ppv    [O] Address of variable to receive interface pointer for riid
 *
 * RETURNS
 *    Success: S_OK
 *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 *             E_UNEXPECTED
 */
HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
{
    int i = 0;
    TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 
    if (ppv == NULL) {
        WARN("invalid parameter\n");
        return E_INVALIDARG;
    }
 
    *ppv = NULL;
 
    if (!IsEqualIID(riid, &IID_IClassFactory) &&
        !IsEqualIID(riid, &IID_IUnknown)) {
        WARN("no interface for %s\n", debugstr_guid(riid));
        return E_NOINTERFACE;
    }
 
    while (NULL != DSOUND_CF[i].rclsid) {
        if (IsEqualGUID(rclsid, DSOUND_CF[i].rclsid)) {
            DSCF_AddRef(&DSOUND_CF[i].IClassFactory_iface);
            *ppv = &DSOUND_CF[i];
            return S_OK;
        }
        i++;
    }
 
    WARN("(%s, %s, %p): no class found.\n", debugstr_guid(rclsid),
         debugstr_guid(riid), ppv);
    return CLASS_E_CLASSNOTAVAILABLE;
}
 
 
/*******************************************************************************
 * DllCanUnloadNow [DSOUND.4]
 * Determines whether the DLL is in use.
 *
 * RETURNS
 *    Can unload now: S_OK
 *    Cannot unload now (the DLL is still active): S_FALSE
 */
HRESULT WINAPI DllCanUnloadNow(void)
{
    return S_FALSE;
}
 
#define INIT_GUID(guid, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8)      \
        guid.Data1 = l; guid.Data2 = w1; guid.Data3 = w2;               \
        guid.Data4[0] = b1; guid.Data4[1] = b2; guid.Data4[2] = b3;     \
        guid.Data4[3] = b4; guid.Data4[4] = b5; guid.Data4[5] = b6;     \
        guid.Data4[6] = b7; guid.Data4[7] = b8;
 
/***********************************************************************
 *           DllMain (DSOUND.init)
 */
BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
    int i;
    TRACE("(%p %d %p)\n", hInstDLL, fdwReason, lpvReserved);
 
    switch (fdwReason) {
    case DLL_PROCESS_ATTACH:
        TRACE("DLL_PROCESS_ATTACH\n");
        for (i = 0; i < MAXWAVEDRIVERS; i++) {
            DSOUND_renderer[i] = NULL;
            DSOUND_capture[i] = NULL;
            INIT_GUID(DSOUND_renderer_guids[i], 0xbd6dd71a, 0x3deb, 0x11d1, 0xb1, 0x71, 0x00, 0xc0, 0x4f, 0xc2, 0x00, 0x00 + i);
            INIT_GUID(DSOUND_capture_guids[i],  0xbd6dd71b, 0x3deb, 0x11d1, 0xb1, 0x71, 0x00, 0xc0, 0x4f, 0xc2, 0x00, 0x00 + i);
        }
        instance = hInstDLL;
        DisableThreadLibraryCalls(hInstDLL);
        /* Increase refcount on dsound by 1 */
        GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS, (LPCWSTR)hInstDLL, &hInstDLL);
        break;
    case DLL_PROCESS_DETACH:
        TRACE("DLL_PROCESS_DETACH\n");
        break;
    default:
        TRACE("UNKNOWN REASON\n");
        break;
    }
    return TRUE;
}
 
/***********************************************************************
 *      DllRegisterServer (DSOUND.@)
 */
HRESULT WINAPI DllRegisterServer(void)
{
    return __wine_register_resources( instance );
}
 
/***********************************************************************
 *      DllUnregisterServer (DSOUND.@)
 */
HRESULT WINAPI DllUnregisterServer(void)
{
    return __wine_unregister_resources( instance );
}