/*
 * Copyright (c) 2015 Mark Harmstone
 *
 * 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 <stdarg.h>

#define COBJMACROS

#include "windef.h"
#include "winbase.h"
#include "winuser.h"

#include "ole2.h"
#include "rpcproxy.h"

#include "wine/debug.h"
#include "wine/list.h"
#include <propsys.h>
#include "initguid.h"

#include "mmsystem.h"
#include "xaudio2.h"

WINE_DEFAULT_DEBUG_CHANNEL(xaudio2);

static HINSTANCE instance;

static void dump_fmt(const WAVEFORMATEX *fmt)
{
    TRACE("wFormatTag: 0x%x (", fmt->wFormatTag);
    switch(fmt->wFormatTag){
#define DOCASE(x) case x: TRACE(#x); break;
    DOCASE(WAVE_FORMAT_PCM)
    DOCASE(WAVE_FORMAT_IEEE_FLOAT)
    DOCASE(WAVE_FORMAT_EXTENSIBLE)
#undef DOCASE
    default:
        TRACE("Unknown");
        break;
    }
    TRACE(")\n");

    TRACE("nChannels: %u\n", fmt->nChannels);
    TRACE("nSamplesPerSec: %u\n", fmt->nSamplesPerSec);
    TRACE("nAvgBytesPerSec: %u\n", fmt->nAvgBytesPerSec);
    TRACE("nBlockAlign: %u\n", fmt->nBlockAlign);
    TRACE("wBitsPerSample: %u\n", fmt->wBitsPerSample);
    TRACE("cbSize: %u\n", fmt->cbSize);

    if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE){
        WAVEFORMATEXTENSIBLE *fmtex = (void*)fmt;
        TRACE("dwChannelMask: %08x\n", fmtex->dwChannelMask);
        TRACE("Samples: %04x\n", fmtex->Samples.wReserved);
        TRACE("SubFormat: %s\n", wine_dbgstr_guid(&fmtex->SubFormat));
    }
}

BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD reason, void *pReserved)
{
    TRACE("(%p, %d, %p)\n", hinstDLL, reason, pReserved);

    switch (reason)
    {
    case DLL_WINE_PREATTACH:
        return FALSE;  /* prefer native version */
    case DLL_PROCESS_ATTACH:
        instance = hinstDLL;
        DisableThreadLibraryCalls( hinstDLL );
        break;
    }
    return TRUE;
}

HRESULT WINAPI DllCanUnloadNow(void)
{
    return S_FALSE;
}

HRESULT WINAPI DllRegisterServer(void)
{
    TRACE("\n");
    return __wine_register_resources(instance);
}

HRESULT WINAPI DllUnregisterServer(void)
{
    TRACE("\n");
    return __wine_unregister_resources(instance);
}

typedef struct _XA2SourceImpl {
    IXAudio27SourceVoice IXAudio27SourceVoice_iface;
    IXAudio2SourceVoice IXAudio2SourceVoice_iface;

    BOOL in_use;

    CRITICAL_SECTION lock;

    WAVEFORMATEX *fmt;

    IXAudio2VoiceCallback *cb;

    struct list entry;
} XA2SourceImpl;

XA2SourceImpl *impl_from_IXAudio2SourceVoice(IXAudio2SourceVoice *iface)
{
    return CONTAINING_RECORD(iface, XA2SourceImpl, IXAudio2SourceVoice_iface);
}

XA2SourceImpl *impl_from_IXAudio27SourceVoice(IXAudio27SourceVoice *iface)
{
    return CONTAINING_RECORD(iface, XA2SourceImpl, IXAudio27SourceVoice_iface);
}

typedef struct {
    IXAudio27 IXAudio27_iface;
    IXAudio2 IXAudio2_iface;
    IXAudio2MasteringVoice IXAudio2MasteringVoice_iface;

    LONG ref;

    CRITICAL_SECTION lock;

    DWORD version;

    struct list source_voices;
} IXAudio2Impl;

static inline IXAudio2Impl *impl_from_IXAudio2(IXAudio2 *iface)
{
    return CONTAINING_RECORD(iface, IXAudio2Impl, IXAudio2_iface);
}

static inline IXAudio2Impl *impl_from_IXAudio27(IXAudio27 *iface)
{
    return CONTAINING_RECORD(iface, IXAudio2Impl, IXAudio27_iface);
}

IXAudio2Impl *impl_from_IXAudio2MasteringVoice(IXAudio2MasteringVoice *iface)
{
    return CONTAINING_RECORD(iface, IXAudio2Impl, IXAudio2MasteringVoice_iface);
}

static void WINAPI XA2SRC_GetVoiceDetails(IXAudio2SourceVoice *iface,
        XAUDIO2_VOICE_DETAILS *pVoiceDetails)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p\n", This, pVoiceDetails);
}

static HRESULT WINAPI XA2SRC_SetOutputVoices(IXAudio2SourceVoice *iface,
        const XAUDIO2_VOICE_SENDS *pSendList)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p\n", This, pSendList);
    return S_OK;
}

static HRESULT WINAPI XA2SRC_SetEffectChain(IXAudio2SourceVoice *iface,
        const XAUDIO2_EFFECT_CHAIN *pEffectChain)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p\n", This, pEffectChain);
    return S_OK;
}

static HRESULT WINAPI XA2SRC_EnableEffect(IXAudio2SourceVoice *iface,
        UINT32 EffectIndex, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %u, 0x%x\n", This, EffectIndex, OperationSet);
    return S_OK;
}

static HRESULT WINAPI XA2SRC_DisableEffect(IXAudio2SourceVoice *iface,
        UINT32 EffectIndex, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %u, 0x%x\n", This, EffectIndex, OperationSet);
    return S_OK;
}

static void WINAPI XA2SRC_GetEffectState(IXAudio2SourceVoice *iface,
        UINT32 EffectIndex, BOOL *pEnabled)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %u, %p\n", This, EffectIndex, pEnabled);
}

static HRESULT WINAPI XA2SRC_SetEffectParameters(IXAudio2SourceVoice *iface,
        UINT32 EffectIndex, const void *pParameters, UINT32 ParametersByteSize,
        UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %u, %p, 0x%x, 0x%x\n", This, EffectIndex, pParameters,
            ParametersByteSize, OperationSet);
    return S_OK;
}

static HRESULT WINAPI XA2SRC_GetEffectParameters(IXAudio2SourceVoice *iface,
        UINT32 EffectIndex, void *pParameters, UINT32 ParametersByteSize)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %u, %p, 0x%x\n", This, EffectIndex, pParameters,
            ParametersByteSize);
    return S_OK;
}

static HRESULT WINAPI XA2SRC_SetFilterParameters(IXAudio2SourceVoice *iface,
        const XAUDIO2_FILTER_PARAMETERS *pParameters, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p, 0x%x\n", This, pParameters, OperationSet);
    return S_OK;
}

static void WINAPI XA2SRC_GetFilterParameters(IXAudio2SourceVoice *iface,
        XAUDIO2_FILTER_PARAMETERS *pParameters)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p\n", This, pParameters);
}

static HRESULT WINAPI XA2SRC_SetOutputFilterParameters(IXAudio2SourceVoice *iface,
        IXAudio2Voice *pDestinationVoice,
        const XAUDIO2_FILTER_PARAMETERS *pParameters, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p, %p, 0x%x\n", This, pDestinationVoice, pParameters, OperationSet);
    return S_OK;
}

static void WINAPI XA2SRC_GetOutputFilterParameters(IXAudio2SourceVoice *iface,
        IXAudio2Voice *pDestinationVoice,
        XAUDIO2_FILTER_PARAMETERS *pParameters)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p, %p\n", This, pDestinationVoice, pParameters);
}

static HRESULT WINAPI XA2SRC_SetVolume(IXAudio2SourceVoice *iface, float Volume,
        UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %f, 0x%x\n", This, Volume, OperationSet);
    return S_OK;
}

static void WINAPI XA2SRC_GetVolume(IXAudio2SourceVoice *iface, float *pVolume)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p\n", This, pVolume);
}

static HRESULT WINAPI XA2SRC_SetChannelVolumes(IXAudio2SourceVoice *iface,
        UINT32 Channels, const float *pVolumes, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %u, %p, 0x%x\n", This, Channels, pVolumes, OperationSet);
    return S_OK;
}

static void WINAPI XA2SRC_GetChannelVolumes(IXAudio2SourceVoice *iface,
        UINT32 Channels, float *pVolumes)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %u, %p\n", This, Channels, pVolumes);
}

static HRESULT WINAPI XA2SRC_SetOutputMatrix(IXAudio2SourceVoice *iface,
        IXAudio2Voice *pDestinationVoice, UINT32 SourceChannels,
        UINT32 DestinationChannels, const float *pLevelMatrix,
        UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p, %u, %u, %p, 0x%x\n", This, pDestinationVoice,
            SourceChannels, DestinationChannels, pLevelMatrix, OperationSet);
    return S_OK;
}

static void WINAPI XA2SRC_GetOutputMatrix(IXAudio2SourceVoice *iface,
        IXAudio2Voice *pDestinationVoice, UINT32 SourceChannels,
        UINT32 DestinationChannels, float *pLevelMatrix)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p, %u, %u, %p\n", This, pDestinationVoice,
            SourceChannels, DestinationChannels, pLevelMatrix);
}

static void WINAPI XA2SRC_DestroyVoice(IXAudio2SourceVoice *iface)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);

    TRACE("%p\n", This);

    EnterCriticalSection(&This->lock);

    if(!This->in_use){
        LeaveCriticalSection(&This->lock);
        return;
    }

    This->in_use = FALSE;

    HeapFree(GetProcessHeap(), 0, This->fmt);

    LeaveCriticalSection(&This->lock);
}

static HRESULT WINAPI XA2SRC_Start(IXAudio2SourceVoice *iface, UINT32 Flags,
        UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, 0x%x, 0x%x\n", This, Flags, OperationSet);
    return S_OK;
}

static HRESULT WINAPI XA2SRC_Stop(IXAudio2SourceVoice *iface, UINT32 Flags,
        UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, 0x%x, 0x%x\n", This, Flags, OperationSet);
    return S_OK;
}

static HRESULT WINAPI XA2SRC_SubmitSourceBuffer(IXAudio2SourceVoice *iface,
        const XAUDIO2_BUFFER *pBuffer, const XAUDIO2_BUFFER_WMA *pBufferWMA)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p, %p\n", This, pBuffer, pBufferWMA);
    return S_OK;
}

static HRESULT WINAPI XA2SRC_FlushSourceBuffers(IXAudio2SourceVoice *iface)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p\n", This);
    return S_OK;
}

static HRESULT WINAPI XA2SRC_Discontinuity(IXAudio2SourceVoice *iface)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p\n", This);
    return S_OK;
}

static HRESULT WINAPI XA2SRC_ExitLoop(IXAudio2SourceVoice *iface, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, 0x%x\n", This, OperationSet);
    return S_OK;
}

static void WINAPI XA2SRC_GetState(IXAudio2SourceVoice *iface,
        XAUDIO2_VOICE_STATE *pVoiceState, UINT32 Flags)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p, 0x%x\n", This, pVoiceState, Flags);
}

static HRESULT WINAPI XA2SRC_SetFrequencyRatio(IXAudio2SourceVoice *iface,
        float Ratio, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %f, 0x%x\n", This, Ratio, OperationSet);
    return S_OK;
}

static void WINAPI XA2SRC_GetFrequencyRatio(IXAudio2SourceVoice *iface, float *pRatio)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %p\n", This, pRatio);
}

static HRESULT WINAPI XA2SRC_SetSourceSampleRate(
    IXAudio2SourceVoice *iface,
    UINT32 NewSourceSampleRate)
{
    XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
    TRACE("%p, %u\n", This, NewSourceSampleRate);
    return S_OK;
}

static const IXAudio2SourceVoiceVtbl XAudio2SourceVoice_Vtbl = {
    XA2SRC_GetVoiceDetails,
    XA2SRC_SetOutputVoices,
    XA2SRC_SetEffectChain,
    XA2SRC_EnableEffect,
    XA2SRC_DisableEffect,
    XA2SRC_GetEffectState,
    XA2SRC_SetEffectParameters,
    XA2SRC_GetEffectParameters,
    XA2SRC_SetFilterParameters,
    XA2SRC_GetFilterParameters,
    XA2SRC_SetOutputFilterParameters,
    XA2SRC_GetOutputFilterParameters,
    XA2SRC_SetVolume,
    XA2SRC_GetVolume,
    XA2SRC_SetChannelVolumes,
    XA2SRC_GetChannelVolumes,
    XA2SRC_SetOutputMatrix,
    XA2SRC_GetOutputMatrix,
    XA2SRC_DestroyVoice,
    XA2SRC_Start,
    XA2SRC_Stop,
    XA2SRC_SubmitSourceBuffer,
    XA2SRC_FlushSourceBuffers,
    XA2SRC_Discontinuity,
    XA2SRC_ExitLoop,
    XA2SRC_GetState,
    XA2SRC_SetFrequencyRatio,
    XA2SRC_GetFrequencyRatio,
    XA2SRC_SetSourceSampleRate
};

static void WINAPI XA27SRC_GetVoiceDetails(IXAudio27SourceVoice *iface,
        XAUDIO2_VOICE_DETAILS *pVoiceDetails)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_GetVoiceDetails(&This->IXAudio2SourceVoice_iface, pVoiceDetails);
}

static HRESULT WINAPI XA27SRC_SetOutputVoices(IXAudio27SourceVoice *iface,
        const XAUDIO2_VOICE_SENDS *pSendList)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_SetOutputVoices(&This->IXAudio2SourceVoice_iface, pSendList);
}

static HRESULT WINAPI XA27SRC_SetEffectChain(IXAudio27SourceVoice *iface,
        const XAUDIO2_EFFECT_CHAIN *pEffectChain)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_SetEffectChain(&This->IXAudio2SourceVoice_iface, pEffectChain);
}

static HRESULT WINAPI XA27SRC_EnableEffect(IXAudio27SourceVoice *iface,
        UINT32 EffectIndex, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_EnableEffect(&This->IXAudio2SourceVoice_iface, EffectIndex, OperationSet);
}

static HRESULT WINAPI XA27SRC_DisableEffect(IXAudio27SourceVoice *iface,
        UINT32 EffectIndex, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_DisableEffect(&This->IXAudio2SourceVoice_iface, EffectIndex, OperationSet);
}

static void WINAPI XA27SRC_GetEffectState(IXAudio27SourceVoice *iface,
        UINT32 EffectIndex, BOOL *pEnabled)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    XA2SRC_GetEffectState(&This->IXAudio2SourceVoice_iface, EffectIndex, pEnabled);
}

static HRESULT WINAPI XA27SRC_SetEffectParameters(IXAudio27SourceVoice *iface,
        UINT32 EffectIndex, const void *pParameters, UINT32 ParametersByteSize,
        UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_SetEffectParameters(&This->IXAudio2SourceVoice_iface,
            EffectIndex, pParameters, ParametersByteSize, OperationSet);
}

static HRESULT WINAPI XA27SRC_GetEffectParameters(IXAudio27SourceVoice *iface,
        UINT32 EffectIndex, void *pParameters, UINT32 ParametersByteSize)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_GetEffectParameters(&This->IXAudio2SourceVoice_iface,
            EffectIndex, pParameters, ParametersByteSize);
}

static HRESULT WINAPI XA27SRC_SetFilterParameters(IXAudio27SourceVoice *iface,
        const XAUDIO2_FILTER_PARAMETERS *pParameters, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_SetFilterParameters(&This->IXAudio2SourceVoice_iface,
            pParameters, OperationSet);
}

static void WINAPI XA27SRC_GetFilterParameters(IXAudio27SourceVoice *iface,
        XAUDIO2_FILTER_PARAMETERS *pParameters)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    XA2SRC_GetFilterParameters(&This->IXAudio2SourceVoice_iface, pParameters);
}

static HRESULT WINAPI XA27SRC_SetOutputFilterParameters(IXAudio27SourceVoice *iface,
        IXAudio2Voice *pDestinationVoice,
        const XAUDIO2_FILTER_PARAMETERS *pParameters, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_SetOutputFilterParameters(&This->IXAudio2SourceVoice_iface,
            pDestinationVoice, pParameters, OperationSet);
}

static void WINAPI XA27SRC_GetOutputFilterParameters(IXAudio27SourceVoice *iface,
        IXAudio2Voice *pDestinationVoice,
        XAUDIO2_FILTER_PARAMETERS *pParameters)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    XA2SRC_GetOutputFilterParameters(&This->IXAudio2SourceVoice_iface,
            pDestinationVoice, pParameters);
}

static HRESULT WINAPI XA27SRC_SetVolume(IXAudio27SourceVoice *iface, float Volume,
        UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_SetVolume(&This->IXAudio2SourceVoice_iface, Volume,
            OperationSet);
}

static void WINAPI XA27SRC_GetVolume(IXAudio27SourceVoice *iface, float *pVolume)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    XA2SRC_GetVolume(&This->IXAudio2SourceVoice_iface, pVolume);
}

static HRESULT WINAPI XA27SRC_SetChannelVolumes(IXAudio27SourceVoice *iface,
        UINT32 Channels, const float *pVolumes, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_SetChannelVolumes(&This->IXAudio2SourceVoice_iface, Channels,
            pVolumes, OperationSet);
}

static void WINAPI XA27SRC_GetChannelVolumes(IXAudio27SourceVoice *iface,
        UINT32 Channels, float *pVolumes)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    XA2SRC_GetChannelVolumes(&This->IXAudio2SourceVoice_iface, Channels,
            pVolumes);
}

static HRESULT WINAPI XA27SRC_SetOutputMatrix(IXAudio27SourceVoice *iface,
        IXAudio2Voice *pDestinationVoice, UINT32 SourceChannels,
        UINT32 DestinationChannels, const float *pLevelMatrix,
        UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_SetOutputMatrix(&This->IXAudio2SourceVoice_iface,
            pDestinationVoice, SourceChannels, DestinationChannels,
            pLevelMatrix, OperationSet);
}

static void WINAPI XA27SRC_GetOutputMatrix(IXAudio27SourceVoice *iface,
        IXAudio2Voice *pDestinationVoice, UINT32 SourceChannels,
        UINT32 DestinationChannels, float *pLevelMatrix)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    XA2SRC_GetOutputMatrix(&This->IXAudio2SourceVoice_iface, pDestinationVoice,
            SourceChannels, DestinationChannels, pLevelMatrix);
}

static void WINAPI XA27SRC_DestroyVoice(IXAudio27SourceVoice *iface)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    XA2SRC_DestroyVoice(&This->IXAudio2SourceVoice_iface);
}

static HRESULT WINAPI XA27SRC_Start(IXAudio27SourceVoice *iface, UINT32 Flags,
        UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_Start(&This->IXAudio2SourceVoice_iface, Flags, OperationSet);
}

static HRESULT WINAPI XA27SRC_Stop(IXAudio27SourceVoice *iface, UINT32 Flags,
        UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_Stop(&This->IXAudio2SourceVoice_iface, Flags, OperationSet);
}

static HRESULT WINAPI XA27SRC_SubmitSourceBuffer(IXAudio27SourceVoice *iface,
        const XAUDIO2_BUFFER *pBuffer, const XAUDIO2_BUFFER_WMA *pBufferWMA)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_SubmitSourceBuffer(&This->IXAudio2SourceVoice_iface, pBuffer,
            pBufferWMA);
}

static HRESULT WINAPI XA27SRC_FlushSourceBuffers(IXAudio27SourceVoice *iface)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_FlushSourceBuffers(&This->IXAudio2SourceVoice_iface);
}

static HRESULT WINAPI XA27SRC_Discontinuity(IXAudio27SourceVoice *iface)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_Discontinuity(&This->IXAudio2SourceVoice_iface);
}

static HRESULT WINAPI XA27SRC_ExitLoop(IXAudio27SourceVoice *iface, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_ExitLoop(&This->IXAudio2SourceVoice_iface, OperationSet);
}

static void WINAPI XA27SRC_GetState(IXAudio27SourceVoice *iface,
        XAUDIO2_VOICE_STATE *pVoiceState)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_GetState(&This->IXAudio2SourceVoice_iface, pVoiceState, 0);
}

static HRESULT WINAPI XA27SRC_SetFrequencyRatio(IXAudio27SourceVoice *iface,
        float Ratio, UINT32 OperationSet)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_SetFrequencyRatio(&This->IXAudio2SourceVoice_iface, Ratio, OperationSet);
}

static void WINAPI XA27SRC_GetFrequencyRatio(IXAudio27SourceVoice *iface, float *pRatio)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_GetFrequencyRatio(&This->IXAudio2SourceVoice_iface, pRatio);
}

static HRESULT WINAPI XA27SRC_SetSourceSampleRate(
    IXAudio27SourceVoice *iface,
    UINT32 NewSourceSampleRate)
{
    XA2SourceImpl *This = impl_from_IXAudio27SourceVoice(iface);
    return XA2SRC_SetSourceSampleRate(&This->IXAudio2SourceVoice_iface, NewSourceSampleRate);
}

static const IXAudio27SourceVoiceVtbl XAudio27SourceVoice_Vtbl = {
    XA27SRC_GetVoiceDetails,
    XA27SRC_SetOutputVoices,
    XA27SRC_SetEffectChain,
    XA27SRC_EnableEffect,
    XA27SRC_DisableEffect,
    XA27SRC_GetEffectState,
    XA27SRC_SetEffectParameters,
    XA27SRC_GetEffectParameters,
    XA27SRC_SetFilterParameters,
    XA27SRC_GetFilterParameters,
    XA27SRC_SetOutputFilterParameters,
    XA27SRC_GetOutputFilterParameters,
    XA27SRC_SetVolume,
    XA27SRC_GetVolume,
    XA27SRC_SetChannelVolumes,
    XA27SRC_GetChannelVolumes,
    XA27SRC_SetOutputMatrix,
    XA27SRC_GetOutputMatrix,
    XA27SRC_DestroyVoice,
    XA27SRC_Start,
    XA27SRC_Stop,
    XA27SRC_SubmitSourceBuffer,
    XA27SRC_FlushSourceBuffers,
    XA27SRC_Discontinuity,
    XA27SRC_ExitLoop,
    XA27SRC_GetState,
    XA27SRC_SetFrequencyRatio,
    XA27SRC_GetFrequencyRatio,
    XA27SRC_SetSourceSampleRate
};

static void WINAPI XA2M_GetVoiceDetails(IXAudio2MasteringVoice *iface,
        XAUDIO2_VOICE_DETAILS *pVoiceDetails)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %p\n", This, pVoiceDetails);
}

static HRESULT WINAPI XA2M_SetOutputVoices(IXAudio2MasteringVoice *iface,
        const XAUDIO2_VOICE_SENDS *pSendList)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %p\n", This, pSendList);
    return S_OK;
}

static HRESULT WINAPI XA2M_SetEffectChain(IXAudio2MasteringVoice *iface,
        const XAUDIO2_EFFECT_CHAIN *pEffectChain)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %p\n", This, pEffectChain);
    return S_OK;
}

static HRESULT WINAPI XA2M_EnableEffect(IXAudio2MasteringVoice *iface, UINT32 EffectIndex,
        UINT32 OperationSet)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %u, 0x%x\n", This, EffectIndex, OperationSet);
    return S_OK;
}

static HRESULT WINAPI XA2M_DisableEffect(IXAudio2MasteringVoice *iface, UINT32 EffectIndex,
        UINT32 OperationSet)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %u, 0x%x\n", This, EffectIndex, OperationSet);
    return S_OK;
}

static void WINAPI XA2M_GetEffectState(IXAudio2MasteringVoice *iface, UINT32 EffectIndex,
        BOOL *pEnabled)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %u, %p\n", This, EffectIndex, pEnabled);
}

static HRESULT WINAPI XA2M_SetEffectParameters(IXAudio2MasteringVoice *iface,
        UINT32 EffectIndex, const void *pParameters, UINT32 ParametersByteSize,
        UINT32 OperationSet)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %u, %p, 0x%x, 0x%x\n", This, EffectIndex, pParameters,
            ParametersByteSize, OperationSet);
    return S_OK;
}

static HRESULT WINAPI XA2M_GetEffectParameters(IXAudio2MasteringVoice *iface,
        UINT32 EffectIndex, void *pParameters, UINT32 ParametersByteSize)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %u, %p, 0x%x\n", This, EffectIndex, pParameters,
            ParametersByteSize);
    return S_OK;
}

static HRESULT WINAPI XA2M_SetFilterParameters(IXAudio2MasteringVoice *iface,
        const XAUDIO2_FILTER_PARAMETERS *pParameters, UINT32 OperationSet)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %p, 0x%x\n", This, pParameters, OperationSet);
    return S_OK;
}

static void WINAPI XA2M_GetFilterParameters(IXAudio2MasteringVoice *iface,
        XAUDIO2_FILTER_PARAMETERS *pParameters)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %p\n", This, pParameters);
}

static HRESULT WINAPI XA2M_SetOutputFilterParameters(IXAudio2MasteringVoice *iface,
        IXAudio2Voice *pDestinationVoice,
        const XAUDIO2_FILTER_PARAMETERS *pParameters, UINT32 OperationSet)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %p, %p, 0x%x\n", This, pDestinationVoice, pParameters, OperationSet);
    return S_OK;
}

static void WINAPI XA2M_GetOutputFilterParameters(IXAudio2MasteringVoice *iface,
        IXAudio2Voice *pDestinationVoice,
        XAUDIO2_FILTER_PARAMETERS *pParameters)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %p, %p\n", This, pDestinationVoice, pParameters);
}

static HRESULT WINAPI XA2M_SetVolume(IXAudio2MasteringVoice *iface, float Volume,
        UINT32 OperationSet)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %f, 0x%x\n", This, Volume, OperationSet);
    return S_OK;
}

static void WINAPI XA2M_GetVolume(IXAudio2MasteringVoice *iface, float *pVolume)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %p\n", This, pVolume);
}

static HRESULT WINAPI XA2M_SetChannelVolumes(IXAudio2MasteringVoice *iface, UINT32 Channels,
        const float *pVolumes, UINT32 OperationSet)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %u, %p, 0x%x\n", This, Channels, pVolumes, OperationSet);
    return S_OK;
}

static void WINAPI XA2M_GetChannelVolumes(IXAudio2MasteringVoice *iface, UINT32 Channels,
        float *pVolumes)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %u, %p\n", This, Channels, pVolumes);
}

static HRESULT WINAPI XA2M_SetOutputMatrix(IXAudio2MasteringVoice *iface,
        IXAudio2Voice *pDestinationVoice, UINT32 SourceChannels,
        UINT32 DestinationChannels, const float *pLevelMatrix,
        UINT32 OperationSet)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %p, %u, %u, %p, 0x%x\n", This, pDestinationVoice,
            SourceChannels, DestinationChannels, pLevelMatrix, OperationSet);
    return S_OK;
}

static void WINAPI XA2M_GetOutputMatrix(IXAudio2MasteringVoice *iface,
        IXAudio2Voice *pDestinationVoice, UINT32 SourceChannels,
        UINT32 DestinationChannels, float *pLevelMatrix)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p, %p, %u, %u, %p\n", This, pDestinationVoice,
            SourceChannels, DestinationChannels, pLevelMatrix);
}

static void WINAPI XA2M_DestroyVoice(IXAudio2MasteringVoice *iface)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p\n", This);
}

/* not present in XAudio2 2.7 */
static void WINAPI XA2M_GetChannelMask(IXAudio2MasteringVoice *iface,
        DWORD *pChannelMask)
{
    IXAudio2Impl *This = impl_from_IXAudio2MasteringVoice(iface);
    TRACE("%p %p\n", This, pChannelMask);
}

struct IXAudio2MasteringVoiceVtbl XAudio2MasteringVoice_Vtbl = {
    XA2M_GetVoiceDetails,
    XA2M_SetOutputVoices,
    XA2M_SetEffectChain,
    XA2M_EnableEffect,
    XA2M_DisableEffect,
    XA2M_GetEffectState,
    XA2M_SetEffectParameters,
    XA2M_GetEffectParameters,
    XA2M_SetFilterParameters,
    XA2M_GetFilterParameters,
    XA2M_SetOutputFilterParameters,
    XA2M_GetOutputFilterParameters,
    XA2M_SetVolume,
    XA2M_GetVolume,
    XA2M_SetChannelVolumes,
    XA2M_GetChannelVolumes,
    XA2M_SetOutputMatrix,
    XA2M_GetOutputMatrix,
    XA2M_DestroyVoice,
    XA2M_GetChannelMask
};

static HRESULT WINAPI IXAudio2Impl_QueryInterface(IXAudio2 *iface, REFIID riid,
        void **ppvObject)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);

    TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), ppvObject);

    if(IsEqualGUID(riid, &IID_IUnknown) ||
            IsEqualGUID(riid, &IID_IXAudio2))
        *ppvObject = &This->IXAudio2_iface;
    else if(IsEqualGUID(riid, &IID_IXAudio27))
        *ppvObject = &This->IXAudio27_iface;
    else
        *ppvObject = NULL;

    if(*ppvObject){
        IUnknown_AddRef((IUnknown*)*ppvObject);
        return S_OK;
    }

    FIXME("(%p)->(%s,%p), not found\n", This,debugstr_guid(riid), ppvObject);

    return E_NOINTERFACE;
}

static ULONG WINAPI IXAudio2Impl_AddRef(IXAudio2 *iface)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);
    ULONG ref = InterlockedIncrement(&This->ref);
    TRACE("(%p)->(): Refcount now %u\n", This, ref);
    return ref;
}

static ULONG WINAPI IXAudio2Impl_Release(IXAudio2 *iface)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);
    ULONG ref = InterlockedDecrement(&This->ref);

    TRACE("(%p)->(): Refcount now %u\n", This, ref);

    if (!ref) {
        XA2SourceImpl *src, *src2;

        LIST_FOR_EACH_ENTRY_SAFE(src, src2, &This->source_voices, XA2SourceImpl, entry){
            IXAudio2SourceVoice_DestroyVoice(&src->IXAudio2SourceVoice_iface);
            DeleteCriticalSection(&src->lock);
            HeapFree(GetProcessHeap(), 0, src);
        }

        DeleteCriticalSection(&This->lock);

        HeapFree(GetProcessHeap(), 0, This);
    }
    return ref;
}

static HRESULT WINAPI IXAudio2Impl_RegisterForCallbacks(IXAudio2 *iface,
        IXAudio2EngineCallback *pCallback)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);

    FIXME("(%p)->(%p): stub!\n", This, pCallback);

    return E_NOTIMPL;
}

static void WINAPI IXAudio2Impl_UnregisterForCallbacks(IXAudio2 *iface,
        IXAudio2EngineCallback *pCallback)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);

    FIXME("(%p)->(%p): stub!\n", This, pCallback);
}

static WAVEFORMATEX *copy_waveformat(const WAVEFORMATEX *wfex)
{
    WAVEFORMATEX *pwfx;

    if(wfex->wFormatTag == WAVE_FORMAT_PCM){
        pwfx = HeapAlloc(GetProcessHeap(), 0, sizeof(WAVEFORMATEX));
        CopyMemory(pwfx, wfex, sizeof(PCMWAVEFORMAT));
        pwfx->cbSize = 0;
    }else{
        pwfx = HeapAlloc(GetProcessHeap(), 0, sizeof(WAVEFORMATEX) + wfex->cbSize);
        CopyMemory(pwfx, wfex, sizeof(WAVEFORMATEX) + wfex->cbSize);
    }

    return pwfx;
}

static HRESULT WINAPI IXAudio2Impl_CreateSourceVoice(IXAudio2 *iface,
        IXAudio2SourceVoice **ppSourceVoice, const WAVEFORMATEX *pSourceFormat,
        UINT32 flags, float maxFrequencyRatio,
        IXAudio2VoiceCallback *pCallback, const XAUDIO2_VOICE_SENDS *pSendList,
        const XAUDIO2_EFFECT_CHAIN *pEffectChain)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);
    XA2SourceImpl *src;

    TRACE("(%p)->(%p, %p, 0x%x, %f, %p, %p, %p)\n", This, ppSourceVoice,
            pSourceFormat, flags, maxFrequencyRatio, pCallback, pSendList,
            pEffectChain);

    dump_fmt(pSourceFormat);

    EnterCriticalSection(&This->lock);

    LIST_FOR_EACH_ENTRY(src, &This->source_voices, XA2SourceImpl, entry){
        if(!src->in_use)
            break;
    }

    if(&src->entry == &This->source_voices){
        src = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*src));
        if(!src){
            LeaveCriticalSection(&This->lock);
            return E_OUTOFMEMORY;
        }

        list_add_head(&This->source_voices, &src->entry);

        src->IXAudio27SourceVoice_iface.lpVtbl = &XAudio27SourceVoice_Vtbl;
        src->IXAudio2SourceVoice_iface.lpVtbl = &XAudio2SourceVoice_Vtbl;

        InitializeCriticalSection(&src->lock);
        src->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": XA2SourceImpl.lock");
    }

    src->in_use = TRUE;

    LeaveCriticalSection(&This->lock);

    src->cb = pCallback;

    src->fmt = copy_waveformat(pSourceFormat);

    if(This->version == 27)
        *ppSourceVoice = (IXAudio2SourceVoice*)&src->IXAudio27SourceVoice_iface;
    else
        *ppSourceVoice = &src->IXAudio2SourceVoice_iface;

    TRACE("Created source voice: %p\n", src);

    return S_OK;
}

static HRESULT WINAPI IXAudio2Impl_CreateSubmixVoice(IXAudio2 *iface,
        IXAudio2SubmixVoice **ppSubmixVoice, UINT32 inputChannels,
        UINT32 inputSampleRate, UINT32 flags, UINT32 processingStage,
        const XAUDIO2_VOICE_SENDS *pSendList,
        const XAUDIO2_EFFECT_CHAIN *pEffectChain)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);

    FIXME("(%p)->(%p, %u, %u, 0x%x, %u, %p, %p): stub!\n", This, ppSubmixVoice,
            inputChannels, inputSampleRate, flags, processingStage, pSendList,
            pEffectChain);

    return E_NOTIMPL;
}

static HRESULT WINAPI IXAudio2Impl_CreateMasteringVoice(IXAudio2 *iface,
        IXAudio2MasteringVoice **ppMasteringVoice, UINT32 inputChannels,
        UINT32 inputSampleRate, UINT32 flags, const WCHAR *deviceId,
        const XAUDIO2_EFFECT_CHAIN *pEffectChain,
        AUDIO_STREAM_CATEGORY streamCategory)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);

    FIXME("(%p)->(%p, %u, %u, 0x%x, %s, %p, 0x%x): stub!\n", This,
            ppMasteringVoice, inputChannels, inputSampleRate, flags,
            wine_dbgstr_w(deviceId), pEffectChain, streamCategory);

    if(flags != 0)
        WARN("Unknown flags set: 0x%x\n", flags);

    if(pEffectChain)
        WARN("Effect chain is unimplemented\n");

    /* TODO: Initialize mmdevice */

    /* there can only be one Mastering Voice, so just build it into XA2 */
    *ppMasteringVoice = &This->IXAudio2MasteringVoice_iface;

    return S_OK;
}

static HRESULT WINAPI IXAudio2Impl_StartEngine(IXAudio2 *iface)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);

    FIXME("(%p)->(): stub!\n", This);

    return E_NOTIMPL;
}

static void WINAPI IXAudio2Impl_StopEngine(IXAudio2 *iface)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);

    FIXME("(%p)->(): stub!\n", This);
}

static HRESULT WINAPI IXAudio2Impl_CommitChanges(IXAudio2 *iface,
        UINT32 operationSet)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);

    FIXME("(%p)->(0x%x): stub!\n", This, operationSet);

    return E_NOTIMPL;
}

static void WINAPI IXAudio2Impl_GetPerformanceData(IXAudio2 *iface,
        XAUDIO2_PERFORMANCE_DATA *pPerfData)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);

    FIXME("(%p)->(%p): stub!\n", This, pPerfData);
}

static void WINAPI IXAudio2Impl_SetDebugConfiguration(IXAudio2 *iface,
        const XAUDIO2_DEBUG_CONFIGURATION *pDebugConfiguration,
        void *pReserved)
{
    IXAudio2Impl *This = impl_from_IXAudio2(iface);

    FIXME("(%p)->(%p, %p): stub!\n", This, pDebugConfiguration, pReserved);
}

/* XAudio2 2.8 */
static const IXAudio2Vtbl XAudio2_Vtbl =
{
    IXAudio2Impl_QueryInterface,
    IXAudio2Impl_AddRef,
    IXAudio2Impl_Release,
    IXAudio2Impl_RegisterForCallbacks,
    IXAudio2Impl_UnregisterForCallbacks,
    IXAudio2Impl_CreateSourceVoice,
    IXAudio2Impl_CreateSubmixVoice,
    IXAudio2Impl_CreateMasteringVoice,
    IXAudio2Impl_StartEngine,
    IXAudio2Impl_StopEngine,
    IXAudio2Impl_CommitChanges,
    IXAudio2Impl_GetPerformanceData,
    IXAudio2Impl_SetDebugConfiguration
};

static HRESULT WINAPI XA27_QueryInterface(IXAudio27 *iface, REFIID riid,
        void **ppvObject)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    return IXAudio2Impl_QueryInterface(&This->IXAudio2_iface, riid, ppvObject);
}

static ULONG WINAPI XA27_AddRef(IXAudio27 *iface)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    return IXAudio2Impl_AddRef(&This->IXAudio2_iface);
}

static ULONG WINAPI XA27_Release(IXAudio27 *iface)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    return IXAudio2Impl_Release(&This->IXAudio2_iface);
}

static HRESULT WINAPI XA27_GetDeviceCount(IXAudio27 *iface, UINT32 *pCount)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    TRACE("(%p)->(%p)\n", This, pCount);
    return E_NOTIMPL;
}

static HRESULT WINAPI XA27_GetDeviceDetails(IXAudio27 *iface, UINT32 index,
        XAUDIO2_DEVICE_DETAILS *pDeviceDetails)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    TRACE("(%p)->(%u, %p)\n", This, index, pDeviceDetails);
    return E_NOTIMPL;
}

static HRESULT WINAPI XA27_Initialize(IXAudio27 *iface, UINT32 flags,
        XAUDIO2_PROCESSOR processor)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    TRACE("(%p)->(0x%x, 0x%x)\n", This, flags, processor);
    return S_OK;
}

static HRESULT WINAPI XA27_RegisterForCallbacks(IXAudio27 *iface,
        IXAudio2EngineCallback *pCallback)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    return IXAudio2Impl_RegisterForCallbacks(&This->IXAudio2_iface, pCallback);
}

static void WINAPI XA27_UnregisterForCallbacks(IXAudio27 *iface,
        IXAudio2EngineCallback *pCallback)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    IXAudio2Impl_UnregisterForCallbacks(&This->IXAudio2_iface, pCallback);
}

static HRESULT WINAPI XA27_CreateSourceVoice(IXAudio27 *iface,
        IXAudio2SourceVoice **ppSourceVoice, const WAVEFORMATEX *pSourceFormat,
        UINT32 flags, float maxFrequencyRatio,
        IXAudio2VoiceCallback *pCallback, const XAUDIO2_VOICE_SENDS *pSendList,
        const XAUDIO2_EFFECT_CHAIN *pEffectChain)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    return IXAudio2Impl_CreateSourceVoice(&This->IXAudio2_iface, ppSourceVoice,
            pSourceFormat, flags, maxFrequencyRatio, pCallback, pSendList,
            pEffectChain);
}

static HRESULT WINAPI XA27_CreateSubmixVoice(IXAudio27 *iface,
        IXAudio2SubmixVoice **ppSubmixVoice, UINT32 inputChannels,
        UINT32 inputSampleRate, UINT32 flags, UINT32 processingStage,
        const XAUDIO2_VOICE_SENDS *pSendList,
        const XAUDIO2_EFFECT_CHAIN *pEffectChain)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    return IXAudio2Impl_CreateSubmixVoice(&This->IXAudio2_iface, ppSubmixVoice,
            inputChannels, inputSampleRate, flags, processingStage, pSendList,
            pEffectChain);
}

static HRESULT WINAPI XA27_CreateMasteringVoice(IXAudio27 *iface,
        IXAudio2MasteringVoice **ppMasteringVoice, UINT32 inputChannels,
        UINT32 inputSampleRate, UINT32 flags, UINT32 deviceIndex,
        const XAUDIO2_EFFECT_CHAIN *pEffectChain)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    TRACE("(%p)->(%p, %u, %u, 0x%x, %u, %p)\n", This, ppMasteringVoice,
            inputChannels, inputSampleRate, flags, deviceIndex,
            pEffectChain);
    /* TODO: Convert DeviceIndex to DeviceId */
    return IXAudio2Impl_CreateMasteringVoice(&This->IXAudio2_iface,
            ppMasteringVoice, inputChannels, inputSampleRate, flags, 0,
            pEffectChain, AudioCategory_GameEffects);
}

static HRESULT WINAPI XA27_StartEngine(IXAudio27 *iface)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    return IXAudio2Impl_StartEngine(&This->IXAudio2_iface);
}

static void WINAPI XA27_StopEngine(IXAudio27 *iface)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    return IXAudio2Impl_StopEngine(&This->IXAudio2_iface);
}

static HRESULT WINAPI XA27_CommitChanges(IXAudio27 *iface, UINT32 operationSet)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    return IXAudio2Impl_CommitChanges(&This->IXAudio2_iface, operationSet);
}

static void WINAPI XA27_GetPerformanceData(IXAudio27 *iface,
        XAUDIO2_PERFORMANCE_DATA *pPerfData)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    return IXAudio2Impl_GetPerformanceData(&This->IXAudio2_iface, pPerfData);
}

static void WINAPI XA27_SetDebugConfiguration(IXAudio27 *iface,
        const XAUDIO2_DEBUG_CONFIGURATION *pDebugConfiguration,
        void *pReserved)
{
    IXAudio2Impl *This = impl_from_IXAudio27(iface);
    return IXAudio2Impl_SetDebugConfiguration(&This->IXAudio2_iface,
            pDebugConfiguration, pReserved);
}

static const IXAudio27Vtbl XAudio27_Vtbl = {
    XA27_QueryInterface,
    XA27_AddRef,
    XA27_Release,
    XA27_GetDeviceCount,
    XA27_GetDeviceDetails,
    XA27_Initialize,
    XA27_RegisterForCallbacks,
    XA27_UnregisterForCallbacks,
    XA27_CreateSourceVoice,
    XA27_CreateSubmixVoice,
    XA27_CreateMasteringVoice,
    XA27_StartEngine,
    XA27_StopEngine,
    XA27_CommitChanges,
    XA27_GetPerformanceData,
    XA27_SetDebugConfiguration
};

static HRESULT WINAPI XAudio2CF_QueryInterface(IClassFactory *iface, REFIID riid, void **ppobj)
{
    if(IsEqualGUID(riid, &IID_IUnknown)
            || IsEqualGUID(riid, &IID_IClassFactory))
    {
        IClassFactory_AddRef(iface);
        *ppobj = iface;
        return S_OK;
    }

    *ppobj = NULL;
    WARN("(%p)->(%s, %p): interface not found\n", iface, debugstr_guid(riid), ppobj);
    return E_NOINTERFACE;
}

static ULONG WINAPI XAudio2CF_AddRef(IClassFactory *iface)
{
    return 2;
}

static ULONG WINAPI XAudio2CF_Release(IClassFactory *iface)
{
    return 1;
}

static HRESULT WINAPI XAudio2CF_CreateInstance(IClassFactory *iface, IUnknown *pOuter,
                                               REFIID riid, void **ppobj)
{
    HRESULT hr;
    IXAudio2Impl *object;

    TRACE("(static)->(%p,%s,%p)\n", pOuter, debugstr_guid(riid), ppobj);

    *ppobj = NULL;

    if(pOuter)
        return CLASS_E_NOAGGREGATION;

    object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
    if(!object)
        return E_OUTOFMEMORY;

    object->IXAudio27_iface.lpVtbl = &XAudio27_Vtbl;
    object->IXAudio2_iface.lpVtbl = &XAudio2_Vtbl;
    object->IXAudio2MasteringVoice_iface.lpVtbl = &XAudio2MasteringVoice_Vtbl;

    if(IsEqualGUID(riid, &IID_IXAudio27))
        object->version = 27;
    else
        object->version = 28;

    list_init(&object->source_voices);

    InitializeCriticalSection(&object->lock);
    object->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": IXAudio2Impl.lock");

    hr = IXAudio2_QueryInterface(&object->IXAudio2_iface, riid, ppobj);
    if(FAILED(hr))
        HeapFree(GetProcessHeap(), 0, object);
    return hr;
}

static HRESULT WINAPI XAudio2CF_LockServer(IClassFactory *iface, BOOL dolock)
{
    FIXME("(static)->(%d): stub!\n", dolock);
    return S_OK;
}

static const IClassFactoryVtbl XAudio2CF_Vtbl =
{
    XAudio2CF_QueryInterface,
    XAudio2CF_AddRef,
    XAudio2CF_Release,
    XAudio2CF_CreateInstance,
    XAudio2CF_LockServer
};

static IClassFactory xaudio2_cf = { &XAudio2CF_Vtbl };

HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, void **ppv)
{
    IClassFactory *factory = NULL;

    TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);

    if(IsEqualGUID(rclsid, &CLSID_XAudio2)) {
        factory = &xaudio2_cf;
    }
    if(!factory) return CLASS_E_CLASSNOTAVAILABLE;

    return IClassFactory_QueryInterface(factory, riid, ppv);
}