| /* | 
 |  * 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 | 
 |  */ | 
 |  | 
 | import "unknwn.idl"; | 
 | import "mmdeviceapi.idl"; | 
 |  | 
 | import "audiosessiontypes.h"; | 
 |  | 
 | cpp_quote("#include <pshpack1.h>") | 
 |  | 
 | [ | 
 |     uuid(fac23f48-31f5-45a8-b49b-5225d61401aa) | 
 | ] | 
 | coclass XAudio20 { | 
 |     interface IUnknown; | 
 | } | 
 |  | 
 | [ | 
 |     uuid(e21a7345-eb21-468e-be50-804db97cf708) | 
 | ] | 
 | coclass XAudio21 { | 
 |     interface IUnknown; | 
 | } | 
 |  | 
 | [ | 
 |     uuid(b802058a-464a-42db-bc10-b650d6f2586a) | 
 | ] | 
 | coclass XAudio22 { | 
 |     interface IUnknown; | 
 | } | 
 |  | 
 | [ | 
 |     uuid(4c5e637a-16c7-4de3-9c46-5ed22181962d) | 
 | ] | 
 | coclass XAudio23 { | 
 |     interface IUnknown; | 
 | } | 
 |  | 
 | [ | 
 |     uuid(03219e78-5bc3-44d1-b92e-f63d89cc6526) | 
 | ] | 
 | coclass XAudio24 { | 
 |     interface IUnknown; | 
 | } | 
 |  | 
 | [ | 
 |     uuid(4c9b6dde-6809-46e6-a278-9b6a97588670) | 
 | ] | 
 | coclass XAudio25 { | 
 |     interface IUnknown; | 
 | } | 
 |  | 
 | [ | 
 |     uuid(3eda9b49-2085-498b-9bb2-39a6778493de) | 
 | ] | 
 | coclass XAudio26 { | 
 |     interface IUnknown; | 
 | } | 
 |  | 
 | [ | 
 |     uuid(5a508685-a254-4fba-9b82-9a24b00306af) | 
 | ] | 
 | coclass XAudio27 { | 
 |     interface IUnknown; | 
 | } | 
 |  | 
 | [ | 
 |     uuid(db05ea35-0329-4d4b-a53a-6dead03d3852) | 
 | ] | 
 | coclass XAudio2Debug { | 
 |     interface IUnknown; | 
 | } | 
 |  | 
 | cpp_quote("#if 0") | 
 | typedef struct WAVEFORMATEX | 
 | { | 
 |     WORD wFormatTag; | 
 |     WORD nChannels; | 
 |     DWORD nSamplesPerSec; | 
 |     DWORD nAvgBytesPerSec; | 
 |     WORD nBlockAlign; | 
 |     WORD wBitsPerSample; | 
 |     WORD cbSize; | 
 | } WAVEFORMATEX; | 
 |  | 
 | typedef struct { | 
 |     WAVEFORMATEX    Format; | 
 |     union { | 
 |         WORD        wValidBitsPerSample; | 
 |         WORD        wSamplesPerBlock; | 
 |         WORD        wReserved; | 
 |     } Samples; | 
 |     DWORD           dwChannelMask; | 
 |     GUID            SubFormat; | 
 | } WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE; | 
 | cpp_quote("#else") | 
 | cpp_quote("#include <mmreg.h>") | 
 | cpp_quote("#endif") | 
 |  | 
 | interface IXAudio2Voice; | 
 |  | 
 | typedef enum XAUDIO2_WINDOWS_PROCESSOR_SPECIFIER | 
 | { | 
 |     Processor1  = 0x00000001, | 
 |     Processor2  = 0x00000002, | 
 |     Processor3  = 0x00000004, | 
 |     Processor4  = 0x00000008, | 
 |     Processor5  = 0x00000010, | 
 |     Processor6  = 0x00000020, | 
 |     Processor7  = 0x00000040, | 
 |     Processor8  = 0x00000080, | 
 |     Processor9  = 0x00000100, | 
 |     Processor10 = 0x00000200, | 
 |     Processor11 = 0x00000400, | 
 |     Processor12 = 0x00000800, | 
 |     Processor13 = 0x00001000, | 
 |     Processor14 = 0x00002000, | 
 |     Processor15 = 0x00004000, | 
 |     Processor16 = 0x00008000, | 
 |     Processor17 = 0x00010000, | 
 |     Processor18 = 0x00020000, | 
 |     Processor19 = 0x00040000, | 
 |     Processor20 = 0x00080000, | 
 |     Processor21 = 0x00100000, | 
 |     Processor22 = 0x00200000, | 
 |     Processor23 = 0x00400000, | 
 |     Processor24 = 0x00800000, | 
 |     Processor25 = 0x01000000, | 
 |     Processor26 = 0x02000000, | 
 |     Processor27 = 0x04000000, | 
 |     Processor28 = 0x08000000, | 
 |     Processor29 = 0x10000000, | 
 |     Processor30 = 0x20000000, | 
 |     Processor31 = 0x40000000, | 
 |     Processor32 = 0x80000000, | 
 |     XAUDIO2_ANY_PROCESSOR = 0xffffffff, | 
 |     XAUDIO2_DEFAULT_PROCESSOR = XAUDIO2_ANY_PROCESSOR | 
 | } XAUDIO2_WINDOWS_PROCESSOR_SPECIFIER, XAUDIO2_PROCESSOR; | 
 |  | 
 | typedef struct XAUDIO2_PERFORMANCE_DATA | 
 | { | 
 |     UINT64 AudioCyclesSinceLastQuery; | 
 |     UINT64 TotalCyclesSinceLastQuery; | 
 |     UINT32 MinimumCyclesPerQuantum; | 
 |     UINT32 MaximumCyclesPerQuantum; | 
 |     UINT32 MemoryUsageInBytes; | 
 |     UINT32 CurrentLatencyInSamples; | 
 |     UINT32 GlitchesSinceEngineStarted; | 
 |     UINT32 ActiveSourceVoiceCount; | 
 |     UINT32 TotalSourceVoiceCount; | 
 |     UINT32 ActiveSubmixVoiceCount; | 
 |     UINT32 ActiveResamplerCount; | 
 |     UINT32 ActiveMatrixMixCount; | 
 |     UINT32 ActiveXmaSourceVoices; | 
 |     UINT32 ActiveXmaStreams; | 
 | } XAUDIO2_PERFORMANCE_DATA; | 
 |  | 
 | typedef struct XAUDIO22_PERFORMANCE_DATA | 
 | { | 
 |     UINT64 AudioCyclesSinceLastQuery; | 
 |     UINT64 TotalCyclesSinceLastQuery; | 
 |     UINT32 MinimumCyclesPerQuantum; | 
 |     UINT32 MaximumCyclesPerQuantum; | 
 |     UINT32 MemoryUsageInBytes; | 
 |     UINT32 CurrentLatencyInSamples; | 
 |     UINT32 GlitchesSinceEngineStarted; | 
 |     UINT32 ActiveSourceVoiceCount; | 
 |     UINT32 TotalSourceVoiceCount; | 
 |     UINT32 ActiveSubmixVoiceCount; | 
 |     UINT32 TotalSubmixVoiceCount; | 
 |     UINT32 ActiveXmaSourceVoices; | 
 |     UINT32 ActiveXmaStreams; | 
 | } XAUDIO22_PERFORMANCE_DATA; | 
 |  | 
 | typedef struct XAUDIO20_PERFORMANCE_DATA | 
 | { | 
 |     UINT64 AudioCyclesSinceLastQuery; | 
 |     UINT64 TotalCyclesSinceLastQuery; | 
 |     UINT32 MinimumCyclesPerQuantum; | 
 |     UINT32 MaximumCyclesPerQuantum; | 
 |     UINT32 MemoryUsageInBytes; | 
 |     UINT32 CurrentLatencyInSamples; | 
 |     UINT32 GlitchesSinceLastQuery; | 
 |     UINT32 ActiveSourceVoiceCount; | 
 |     UINT32 TotalSourceVoiceCount; | 
 |     UINT32 ActiveSubmixVoiceCount; | 
 |     UINT32 TotalSubmixVoiceCount; | 
 |     UINT32 ActiveXmaSourceVoices; | 
 |     UINT32 ActiveXmaStreams; | 
 | } XAUDIO20_PERFORMANCE_DATA; | 
 |  | 
 | typedef enum XAUDIO2_DEVICE_ROLE | 
 | { | 
 |     NotDefaultDevice            = 0x0, | 
 |     DefaultConsoleDevice        = 0x1, | 
 |     DefaultMultimediaDevice     = 0x2, | 
 |     DefaultCommunicationsDevice = 0x4, | 
 |     DefaultGameDevice           = 0x8, | 
 |     GlobalDefaultDevice         = 0xf, | 
 |     InvalidDeviceRole = ~GlobalDefaultDevice | 
 | } XAUDIO2_DEVICE_ROLE; | 
 |  | 
 | typedef struct XAUDIO2_DEVICE_DETAILS | 
 | { | 
 |     WCHAR DeviceID[256]; | 
 |     WCHAR DisplayName[256]; | 
 |     XAUDIO2_DEVICE_ROLE Role; | 
 |     WAVEFORMATEXTENSIBLE OutputFormat; | 
 | } XAUDIO2_DEVICE_DETAILS; | 
 |  | 
 | typedef struct XAUDIO27_VOICE_DETAILS | 
 | { | 
 |     UINT32 CreationFlags; | 
 |     UINT32 InputChannels; | 
 |     UINT32 InputSampleRate; | 
 | } XAUDIO27_VOICE_DETAILS; | 
 |  | 
 | typedef struct XAUDIO2_VOICE_DETAILS | 
 | { | 
 |     UINT32 CreationFlags; | 
 |     UINT32 ActiveFlags; | 
 |     UINT32 InputChannels; | 
 |     UINT32 InputSampleRate; | 
 | } XAUDIO2_VOICE_DETAILS; | 
 |  | 
 | typedef struct XAUDIO2_SEND_DESCRIPTOR | 
 | { | 
 |     UINT32 Flags; | 
 |     IXAudio2Voice* pOutputVoice; | 
 | } XAUDIO2_SEND_DESCRIPTOR; | 
 |  | 
 | /* XAudio2 2.3's XAUDIO2_VOICE_SENDS struct */ | 
 | typedef struct XAUDIO23_VOICE_SENDS | 
 | { | 
 |     UINT32 OutputCount; | 
 |     IXAudio2Voice **pOutputVoices; | 
 | } XAUDIO23_VOICE_SENDS; | 
 |  | 
 | typedef struct XAUDIO2_VOICE_SENDS | 
 | { | 
 |     UINT32 SendCount; | 
 |     XAUDIO2_SEND_DESCRIPTOR* pSends; | 
 | } XAUDIO2_VOICE_SENDS; | 
 |  | 
 | typedef struct XAUDIO2_EFFECT_DESCRIPTOR | 
 | { | 
 |     IUnknown* pEffect; | 
 |     BOOL InitialState; | 
 |     UINT32 OutputChannels; | 
 | } XAUDIO2_EFFECT_DESCRIPTOR; | 
 |  | 
 | typedef struct XAUDIO2_EFFECT_CHAIN | 
 | { | 
 |     UINT32 EffectCount; | 
 |     XAUDIO2_EFFECT_DESCRIPTOR* pEffectDescriptors; | 
 | } XAUDIO2_EFFECT_CHAIN; | 
 |  | 
 | const UINT32 XAUDIO2_MAX_BUFFER_BYTES = 0x80000000; | 
 | const UINT32 XAUDIO2_MAX_QUEUED_BUFFERS = 64; | 
 | const UINT32 XAUDIO2_MAX_BUFFERS_SYSTEM = 2; | 
 | const UINT32 XAUDIO2_MAX_AUDIO_CHANNELS = 64; | 
 | const UINT32 XAUDIO2_MIN_SAMPLE_RATE = 1000; | 
 | const UINT32 XAUDIO2_MAX_SAMPLE_RATE = 200000; | 
 | const float XAUDIO2_MAX_VOLUME_LEVEL = 16777216.0; | 
 | const float XAUDIO2_MIN_FREQ_RATIO = (1/1024.0); | 
 | const float XAUDIO2_MAX_FREQ_RATIO = 1024.0; | 
 | const float XAUDIO2_DEFAULT_FREQ_RATIO = 2.0; | 
 | const float XAUDIO2_MAX_FILTER_ONEOVERQ = 1.5; | 
 | const float XAUDIO2_MAX_FILTER_FREQUENCY = 1.0; | 
 | const UINT32 XAUDIO2_MAX_LOOP_COUNT = 254; | 
 | const UINT32 XAUDIO20_MAX_LOOP_COUNT = 0x100000; /* xaudio 2.0 */ | 
 |  | 
 | const UINT32 XAUDIO2_COMMIT_NOW = 0; | 
 | const UINT32 XAUDIO2_COMMIT_ALL = 0; | 
 | const UINT32 XAUDIO2_INVALID_OPSET = 0xffffffff; | 
 | const UINT32 XAUDIO2_NO_LOOP_REGION = 0; | 
 | const UINT32 XAUDIO2_LOOP_INFINITE = 255; | 
 | const UINT32 XAUDIO20_LOOP_INFINITE = ((UINT)-1); /* xaudio 2.0 */ | 
 | const UINT32 XAUDIO2_DEFAULT_CHANNELS = 0; | 
 | const UINT32 XAUDIO2_DEFAULT_SAMPLERATE = 0; | 
 |  | 
 | [ | 
 |     object, | 
 |     local | 
 | ] | 
 | interface IXAudio2EngineCallback | 
 | { | 
 |     void OnProcessingPassStart(); | 
 |  | 
 |     void OnProcessingPassEnd(); | 
 |  | 
 |     void OnCriticalError([in] HRESULT Error); | 
 | } | 
 |  | 
 | typedef enum XAUDIO2_FILTER_TYPE | 
 | { | 
 |     LowPassFilter, | 
 |     BandPassFilter, | 
 |     HighPassFilter, | 
 |     NotchFilter | 
 | } XAUDIO2_FILTER_TYPE; | 
 |  | 
 | typedef struct XAUDIO2_FILTER_PARAMETERS | 
 | { | 
 |     XAUDIO2_FILTER_TYPE Type; | 
 |     float Frequency; | 
 |     float OneOverQ; | 
 | } XAUDIO2_FILTER_PARAMETERS; | 
 |  | 
 | /* XAudio 2.0's IXAudio2Voice */ | 
 | /* XAudio2 2.0's IXAudio2Voice interface. Actually called | 
 |  * IXAudio2Voice in the Mar 2008 DX SDK */ | 
 | [ | 
 |     object, | 
 |     local | 
 | ] | 
 | interface IXAudio20Voice | 
 | { | 
 |     void GetVoiceDetails([out] XAUDIO27_VOICE_DETAILS* pVoiceDetails); | 
 |  | 
 |     HRESULT SetOutputVoices([in] const XAUDIO23_VOICE_SENDS* pSendList); | 
 |  | 
 |     HRESULT SetEffectChain([in] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT EnableEffect( | 
 |         [in] UINT32 EffectIndex, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT DisableEffect( | 
 |         [in] UINT32 EffectIndex, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetEffectState( | 
 |         [in] UINT32 EffectIndex, | 
 |         [out] BOOL* pEnabled); | 
 |  | 
 |     HRESULT SetEffectParameters( | 
 |         [in] UINT32 EffectIndex, | 
 |         [in] const void* pParameters, | 
 |         [in] UINT32 ParametersByteSize, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT GetEffectParameters( | 
 |         [in] UINT32 EffectIndex, | 
 |         [out] void* pParameters, | 
 |         [in] UINT32 ParametersByteSize); | 
 |  | 
 |     HRESULT SetFilterParameters( | 
 |         [in] const XAUDIO2_FILTER_PARAMETERS* pParameters, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetFilterParameters([out] XAUDIO2_FILTER_PARAMETERS* pParameters); | 
 |  | 
 |     HRESULT SetVolume( | 
 |         [in] float Volume, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetVolume([out] float* pVolume); | 
 |  | 
 |     HRESULT SetChannelVolumes( | 
 |         [in] UINT32 Channels, | 
 |         [in, size_is(Channels)] const float* pVolumes, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetChannelVolumes( | 
 |         [in] UINT32 Channels, | 
 |         [out, size_is(Channels)] float* pVolumes); | 
 |  | 
 |     HRESULT SetOutputMatrix( | 
 |         [in] IXAudio2Voice* pDestinationVoice, | 
 |         [in] UINT32 SourceChannels, | 
 |         [in] UINT32 DestinationChannels, | 
 |         [in, size_is(SourceChannels * DestinationChannels)] const float* pLevelMatrix, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT GetOutputMatrix( | 
 |         [in] IXAudio2Voice* pDestinationVoice, | 
 |         [in] UINT32 SourceChannels, | 
 |         [in] UINT32 DestinationChannels, | 
 |         [out, size_is(SourceChannels * DestinationChannels)] float* pLevelMatrix); | 
 |  | 
 |     void DestroyVoice(); | 
 | } | 
 |  | 
 | /* XAudio 2.3's IXAudio2Voice */ | 
 | /* XAudio2 2.3's IXAudio2Voice interface. Actually called | 
 |  * IXAudio2Voice in the Nov 2008 DX SDK */ | 
 | [ | 
 |     object, | 
 |     local | 
 | ] | 
 | interface IXAudio23Voice | 
 | { | 
 |     void GetVoiceDetails([out] XAUDIO27_VOICE_DETAILS* pVoiceDetails); | 
 |  | 
 |     HRESULT SetOutputVoices([in] const XAUDIO23_VOICE_SENDS* pSendList); | 
 |  | 
 |     HRESULT SetEffectChain([in] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT EnableEffect( | 
 |         [in] UINT32 EffectIndex, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT DisableEffect( | 
 |         [in] UINT32 EffectIndex, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetEffectState( | 
 |         [in] UINT32 EffectIndex, | 
 |         [out] BOOL* pEnabled); | 
 |  | 
 |     HRESULT SetEffectParameters( | 
 |         [in] UINT32 EffectIndex, | 
 |         [in] const void* pParameters, | 
 |         [in] UINT32 ParametersByteSize, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT GetEffectParameters( | 
 |         [in] UINT32 EffectIndex, | 
 |         [out] void* pParameters, | 
 |         [in] UINT32 ParametersByteSize); | 
 |  | 
 |     HRESULT SetFilterParameters( | 
 |         [in] const XAUDIO2_FILTER_PARAMETERS* pParameters, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetFilterParameters([out] XAUDIO2_FILTER_PARAMETERS* pParameters); | 
 |  | 
 |     HRESULT SetVolume( | 
 |         [in] float Volume, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetVolume([out] float* pVolume); | 
 |  | 
 |     HRESULT SetChannelVolumes( | 
 |         [in] UINT32 Channels, | 
 |         [in, size_is(Channels)] const float* pVolumes, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetChannelVolumes( | 
 |         [in] UINT32 Channels, | 
 |         [out, size_is(Channels)] float* pVolumes); | 
 |  | 
 |     HRESULT SetOutputMatrix( | 
 |         [in] IXAudio2Voice* pDestinationVoice, | 
 |         [in] UINT32 SourceChannels, | 
 |         [in] UINT32 DestinationChannels, | 
 |         [in, size_is(SourceChannels * DestinationChannels)] const float* pLevelMatrix, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetOutputMatrix( | 
 |         [in] IXAudio2Voice* pDestinationVoice, | 
 |         [in] UINT32 SourceChannels, | 
 |         [in] UINT32 DestinationChannels, | 
 |         [out, size_is(SourceChannels * DestinationChannels)] float* pLevelMatrix); | 
 |  | 
 |     void DestroyVoice(); | 
 | } | 
 |  | 
 | /* XAudio 2.7's IXAudio2Voice */ | 
 | /* XAudio2 2.7's IXAudio2Voice interface. Actually called | 
 |  * IXAudio2Voice in the Jun 2010 DX SDK */ | 
 | [ | 
 |     object, | 
 |     local | 
 | ] | 
 | interface IXAudio27Voice | 
 | { | 
 |     void GetVoiceDetails([out] XAUDIO27_VOICE_DETAILS* pVoiceDetails); | 
 |  | 
 |     HRESULT SetOutputVoices([in] const XAUDIO2_VOICE_SENDS* pSendList); | 
 |  | 
 |     HRESULT SetEffectChain([in] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT EnableEffect( | 
 |         [in] UINT32 EffectIndex, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT DisableEffect( | 
 |         [in] UINT32 EffectIndex, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetEffectState( | 
 |         [in] UINT32 EffectIndex, | 
 |         [out] BOOL* pEnabled); | 
 |  | 
 |     HRESULT SetEffectParameters( | 
 |         [in] UINT32 EffectIndex, | 
 |         [in] const void* pParameters, | 
 |         [in] UINT32 ParametersByteSize, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT GetEffectParameters( | 
 |         [in] UINT32 EffectIndex, | 
 |         [out] void* pParameters, | 
 |         [in] UINT32 ParametersByteSize); | 
 |  | 
 |     HRESULT SetFilterParameters( | 
 |         [in] const XAUDIO2_FILTER_PARAMETERS* pParameters, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetFilterParameters([out] XAUDIO2_FILTER_PARAMETERS* pParameters); | 
 |  | 
 |     HRESULT SetOutputFilterParameters( | 
 |         [in] IXAudio2Voice* pDestinationVoice, | 
 |         [in] const XAUDIO2_FILTER_PARAMETERS* pParameters, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetOutputFilterParameters( | 
 |         [in] IXAudio2Voice* pDestinationVoice, | 
 |         [out] XAUDIO2_FILTER_PARAMETERS* pParameters); | 
 |  | 
 |     HRESULT SetVolume( | 
 |         [in] float Volume, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetVolume([out] float* pVolume); | 
 |  | 
 |     HRESULT SetChannelVolumes( | 
 |         [in] UINT32 Channels, | 
 |         [in, size_is(Channels)] const float* pVolumes, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetChannelVolumes( | 
 |         [in] UINT32 Channels, | 
 |         [out, size_is(Channels)] float* pVolumes); | 
 |  | 
 |     HRESULT SetOutputMatrix( | 
 |         [in] IXAudio2Voice* pDestinationVoice, | 
 |         [in] UINT32 SourceChannels, | 
 |         [in] UINT32 DestinationChannels, | 
 |         [in, size_is(SourceChannels * DestinationChannels)] const float* pLevelMatrix, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetOutputMatrix( | 
 |         [in] IXAudio2Voice* pDestinationVoice, | 
 |         [in] UINT32 SourceChannels, | 
 |         [in] UINT32 DestinationChannels, | 
 |         [out, size_is(SourceChannels * DestinationChannels)] float* pLevelMatrix); | 
 |  | 
 |     void DestroyVoice(); | 
 | } | 
 |  | 
 | [ | 
 |     object, | 
 |     local | 
 | ] | 
 | interface IXAudio2Voice | 
 | { | 
 |     void GetVoiceDetails([out] XAUDIO2_VOICE_DETAILS* pVoiceDetails); | 
 |  | 
 |     HRESULT SetOutputVoices([in] const XAUDIO2_VOICE_SENDS* pSendList); | 
 |  | 
 |     HRESULT SetEffectChain([in] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT EnableEffect( | 
 |         [in] UINT32 EffectIndex, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT DisableEffect( | 
 |         [in] UINT32 EffectIndex, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetEffectState( | 
 |         [in] UINT32 EffectIndex, | 
 |         [out] BOOL* pEnabled); | 
 |  | 
 |     HRESULT SetEffectParameters( | 
 |         [in] UINT32 EffectIndex, | 
 |         [in] const void* pParameters, | 
 |         [in] UINT32 ParametersByteSize, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT GetEffectParameters( | 
 |         [in] UINT32 EffectIndex, | 
 |         [out] void* pParameters, | 
 |         [in] UINT32 ParametersByteSize); | 
 |  | 
 |     HRESULT SetFilterParameters( | 
 |         [in] const XAUDIO2_FILTER_PARAMETERS* pParameters, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetFilterParameters([out] XAUDIO2_FILTER_PARAMETERS* pParameters); | 
 |  | 
 |     HRESULT SetOutputFilterParameters( | 
 |         [in] IXAudio2Voice* pDestinationVoice, | 
 |         [in] const XAUDIO2_FILTER_PARAMETERS* pParameters, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetOutputFilterParameters( | 
 |         [in] IXAudio2Voice* pDestinationVoice, | 
 |         [out] XAUDIO2_FILTER_PARAMETERS* pParameters); | 
 |  | 
 |     HRESULT SetVolume( | 
 |         [in] float Volume, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetVolume([out] float* pVolume); | 
 |  | 
 |     HRESULT SetChannelVolumes( | 
 |         [in] UINT32 Channels, | 
 |         [in, size_is(Channels)] const float* pVolumes, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetChannelVolumes( | 
 |         [in] UINT32 Channels, | 
 |         [out, size_is(Channels)] float* pVolumes); | 
 |  | 
 |     HRESULT SetOutputMatrix( | 
 |         [in] IXAudio2Voice* pDestinationVoice, | 
 |         [in] UINT32 SourceChannels, | 
 |         [in] UINT32 DestinationChannels, | 
 |         [in, size_is(SourceChannels * DestinationChannels)] const float* pLevelMatrix, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetOutputMatrix( | 
 |         [in] IXAudio2Voice* pDestinationVoice, | 
 |         [in] UINT32 SourceChannels, | 
 |         [in] UINT32 DestinationChannels, | 
 |         [out, size_is(SourceChannels * DestinationChannels)] float* pLevelMatrix); | 
 |  | 
 |     void DestroyVoice(); | 
 | } | 
 |  | 
 | typedef struct XAUDIO2_BUFFER | 
 | { | 
 |     UINT32 Flags; | 
 |     UINT32 AudioBytes; | 
 |     const BYTE* pAudioData; | 
 |     UINT32 PlayBegin; | 
 |     UINT32 PlayLength; | 
 |     UINT32 LoopBegin; | 
 |     UINT32 LoopLength; | 
 |     UINT32 LoopCount; | 
 |     void* pContext; | 
 | } XAUDIO2_BUFFER; | 
 |  | 
 | typedef struct XAUDIO2_BUFFER_WMA | 
 | { | 
 |     const UINT32* pDecodedPacketCumulativeBytes; | 
 |     UINT32 PacketCount; | 
 | } XAUDIO2_BUFFER_WMA; | 
 |  | 
 | typedef struct XAUDIO2_VOICE_STATE | 
 | { | 
 |     void* pCurrentBufferContext; | 
 |     UINT32 BuffersQueued; | 
 |     UINT64 SamplesPlayed; | 
 | } XAUDIO2_VOICE_STATE; | 
 |  | 
 | [ | 
 |     local | 
 | ] | 
 | /* XAudio2 2.0's IXAudio2SourceVoice interface. Actually called | 
 |  * IXAudio2SourceVoice in the Mar 2008 DX SDK */ | 
 | interface IXAudio20SourceVoice : IXAudio20Voice | 
 | { | 
 |     HRESULT Start( | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT Stop( | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT SubmitSourceBuffer( | 
 |         [in] const XAUDIO2_BUFFER* pBuffer, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_BUFFER_WMA* pBufferWMA); | 
 |  | 
 |     HRESULT FlushSourceBuffers(); | 
 |  | 
 |     HRESULT Discontinuity(); | 
 |  | 
 |     HRESULT ExitLoop([in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetState([out] XAUDIO2_VOICE_STATE* pVoiceState); | 
 |  | 
 |     HRESULT SetFrequencyRatio( | 
 |         [in] float Ratio, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetFrequencyRatio([out] float* pRatio); | 
 | } | 
 |  | 
 | [ | 
 |     local | 
 | ] | 
 | /* XAudio2 2.3's IXAudio2SourceVoice interface. Actually called | 
 |  * IXAudio2SourceVoice in the Nov 2008 DX SDK */ | 
 | interface IXAudio23SourceVoice : IXAudio23Voice | 
 | { | 
 |     HRESULT Start( | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT Stop( | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT SubmitSourceBuffer( | 
 |         [in] const XAUDIO2_BUFFER* pBuffer, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_BUFFER_WMA* pBufferWMA); | 
 |  | 
 |     HRESULT FlushSourceBuffers(); | 
 |  | 
 |     HRESULT Discontinuity(); | 
 |  | 
 |     HRESULT ExitLoop([in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetState([out] XAUDIO2_VOICE_STATE* pVoiceState); | 
 |  | 
 |     HRESULT SetFrequencyRatio( | 
 |         [in] float Ratio, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetFrequencyRatio([out] float* pRatio); | 
 | } | 
 |  | 
 | [ | 
 |     local | 
 | ] | 
 | /* XAudio2 2.7's IXAudio2SourceVoice interface. Actually called | 
 |  * IXAudio2SourceVoice in the Jun 2010 DX SDK */ | 
 | interface IXAudio27SourceVoice : IXAudio27Voice | 
 | { | 
 |     HRESULT Start( | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT Stop( | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT SubmitSourceBuffer( | 
 |         [in] const XAUDIO2_BUFFER* pBuffer, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_BUFFER_WMA* pBufferWMA); | 
 |  | 
 |     HRESULT FlushSourceBuffers(); | 
 |  | 
 |     HRESULT Discontinuity(); | 
 |  | 
 |     HRESULT ExitLoop([in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetState([out] XAUDIO2_VOICE_STATE* pVoiceState); | 
 |  | 
 |     HRESULT SetFrequencyRatio( | 
 |         [in] float Ratio, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetFrequencyRatio([out] float* pRatio); | 
 |  | 
 |     HRESULT SetSourceSampleRate([in] UINT32 NewSourceSampleRate); | 
 | } | 
 |  | 
 | [ | 
 |     local | 
 | ] | 
 | /* XAudio2 2.8's IXAudio2SourceVoice interface. */ | 
 | interface IXAudio2SourceVoice : IXAudio2Voice | 
 | { | 
 |     HRESULT Start( | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT Stop( | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     HRESULT SubmitSourceBuffer( | 
 |         [in] const XAUDIO2_BUFFER* pBuffer, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_BUFFER_WMA* pBufferWMA); | 
 |  | 
 |     HRESULT FlushSourceBuffers(); | 
 |  | 
 |     HRESULT Discontinuity(); | 
 |  | 
 |     HRESULT ExitLoop([in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetState([out] XAUDIO2_VOICE_STATE* pVoiceState, [in, defaultvalue(0)] UINT32 Flags); | 
 |  | 
 |     HRESULT SetFrequencyRatio( | 
 |         [in] float Ratio, | 
 |         [in, defaultvalue(XAUDIO2_COMMIT_NOW)] UINT32 OperationSet); | 
 |  | 
 |     void GetFrequencyRatio([out] float* pRatio); | 
 |  | 
 |     HRESULT SetSourceSampleRate([in] UINT32 NewSourceSampleRate); | 
 | } | 
 |  | 
 | [ | 
 |     local | 
 | ] | 
 | /* XAudio2 2.0's IXAudio2SubmixVoice interface. Actually called | 
 |  * IXAudio2SubmixVoice in the Mar 2008 DX SDK */ | 
 | interface IXAudio20SubmixVoice : IXAudio20Voice | 
 | { | 
 | } | 
 |  | 
 | [ | 
 |     local | 
 | ] | 
 | /* XAudio2 2.3's IXAudio2SubmixVoice interface. Actually called | 
 |  * IXAudio2SubmixVoice in the Nov 2008 DX SDK */ | 
 | interface IXAudio23SubmixVoice : IXAudio23Voice | 
 | { | 
 | } | 
 |  | 
 | [ | 
 |     local | 
 | ] | 
 | /* XAudio2 2.7's IXAudio2SubmixVoice interface. Actually called | 
 |  * IXAudio2SubmixVoice in the Jun 2010 DX SDK */ | 
 | interface IXAudio27SubmixVoice : IXAudio27Voice | 
 | { | 
 | } | 
 |  | 
 | [ | 
 |     local | 
 | ] | 
 | interface IXAudio2SubmixVoice : IXAudio2Voice | 
 | { | 
 | } | 
 |  | 
 | [ | 
 |     local | 
 | ] | 
 | /* XAudio2 2.0's IXAudio2MasteringVoice interface. Actually called | 
 |  * IXAudio2MasteringVoice in the Mar 2008 DX SDK */ | 
 | interface IXAudio20MasteringVoice : IXAudio20Voice | 
 | { | 
 | } | 
 |  | 
 | [ | 
 |     local | 
 | ] | 
 | /* XAudio2 2.3's IXAudio2MasteringVoice interface. Actually called | 
 |  * IXAudio2MasteringVoice in the Nov 2008 DX SDK */ | 
 | interface IXAudio23MasteringVoice : IXAudio23Voice | 
 | { | 
 | } | 
 |  | 
 | [ | 
 |     local | 
 | ] | 
 | /* XAudio2 2.7's IXAudio2MasteringVoice interface. Actually called | 
 |  * IXAudio2MasteringVoice in the Jun 2010 DX SDK */ | 
 | interface IXAudio27MasteringVoice : IXAudio27Voice | 
 | { | 
 | } | 
 |  | 
 | [ | 
 |     local | 
 | ] | 
 | interface IXAudio2MasteringVoice : IXAudio2Voice | 
 | { | 
 |     /* not present in XAudio2 2.7 */ | 
 |     void GetChannelMask([out] DWORD *pChannelMask); | 
 | } | 
 |  | 
 | [ | 
 |     object, | 
 |     local | 
 | ] | 
 | interface IXAudio20VoiceCallback | 
 | { | 
 |     void OnVoiceProcessingPassStart(); | 
 |  | 
 |     void OnVoiceProcessingPassEnd(); | 
 |  | 
 |     void OnStreamEnd(); | 
 |  | 
 |     void OnBufferStart([in] void* pBufferContext); | 
 |  | 
 |     void OnBufferEnd([in] void* pBufferContext); | 
 |  | 
 |     void OnLoopEnd([in] void* pBufferContext); | 
 |  | 
 |     void OnVoiceError( | 
 |         [in] void* pBuffercontext, | 
 |         [in] HRESULT Error); | 
 | } | 
 |  | 
 | [ | 
 |     object, | 
 |     local | 
 | ] | 
 | interface IXAudio2VoiceCallback | 
 | { | 
 |     void OnVoiceProcessingPassStart([in] UINT32 BytesRequired); | 
 |  | 
 |     void OnVoiceProcessingPassEnd(); | 
 |  | 
 |     void OnStreamEnd(); | 
 |  | 
 |     void OnBufferStart([in] void* pBufferContext); | 
 |  | 
 |     void OnBufferEnd([in] void* pBufferContext); | 
 |  | 
 |     void OnLoopEnd([in] void* pBufferContext); | 
 |  | 
 |     void OnVoiceError( | 
 |         [in] void* pBuffercontext, | 
 |         [in] HRESULT Error); | 
 | } | 
 |  | 
 | typedef struct XAUDIO2_DEBUG_CONFIGURATION | 
 | { | 
 |     UINT32 TraceMask; | 
 |     UINT32 BreakMask; | 
 |     BOOL LogThreadID; | 
 |     BOOL LogFileline; | 
 |     BOOL LogFunctionName; | 
 |     BOOL LogTiming; | 
 | } XAUDIO2_DEBUG_CONFIGURATION; | 
 |  | 
 | [ | 
 |     object, | 
 |     uuid(8bcf1f58-9fe7-4583-8ac6-e2adc465c8bb), /* all versions before 28 share IID_IXAudio */ | 
 | ] | 
 | /* XAudio2 2.0's IXAudio2 interface. Actually called IXAudio2 in the Mar 2008 | 
 |  * DX SDK */ | 
 | interface IXAudio20 : IUnknown | 
 | { | 
 |     HRESULT GetDeviceCount([out] UINT32* pCount); | 
 |  | 
 |     HRESULT GetDeviceDetails( | 
 |         [in] UINT32 Index, | 
 |         [out] XAUDIO2_DEVICE_DETAILS* pDeviceDetails); | 
 |  | 
 |     HRESULT Initialize( | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_PROCESSOR)] XAUDIO2_PROCESSOR XAudio2Processor); | 
 |  | 
 |     HRESULT RegisterForCallbacks([in] IXAudio2EngineCallback* pCallback); | 
 |  | 
 |     void UnregisterForCallbacks([in] IXAudio2EngineCallback* pCallback); | 
 |  | 
 |     HRESULT CreateSourceVoice( | 
 |         [out] IXAudio2SourceVoice** ppSourceVoice, | 
 |         [in] const WAVEFORMATEX* pSourceFormat, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_FREQ_RATIO)] float MaxFrequencyRatio, | 
 |         [in, defaultvalue(NULL)] IXAudio2VoiceCallback* pCallback, | 
 |         [in, defaultvalue(NULL)] const XAUDIO23_VOICE_SENDS* pSendList, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT CreateSubmixVoice( | 
 |         [out] IXAudio2SubmixVoice** ppSubmixVoice, | 
 |         [in] UINT32 InputChannels, | 
 |         [in] UINT32 InputSampleRate, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(0)] UINT32 ProcessingStage, | 
 |         [in, defaultvalue(NULL)] const XAUDIO23_VOICE_SENDS* pSendList, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT CreateMasteringVoice( | 
 |         [out] IXAudio2MasteringVoice** ppMasteringVoice, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_CHANNELS)] UINT32 InputChannels, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_SAMPLERATE)] UINT32 InputSampleRate, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(0)] UINT32 DeviceIndex, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT StartEngine(); | 
 |  | 
 |     void StopEngine(); | 
 |  | 
 |     HRESULT CommitChanges([in] UINT32 OperationSet); | 
 |  | 
 |     void GetPerformanceData([out] XAUDIO20_PERFORMANCE_DATA* pPerfData); | 
 |  | 
 |     [local] void SetDebugConfiguration( | 
 |         [in] const XAUDIO2_DEBUG_CONFIGURATION* pDebugConfiguration, | 
 |         [in, defaultvalue(NULL)] void* pReserved); | 
 | } | 
 |  | 
 | [ | 
 |     object, | 
 |     uuid(8bcf1f58-9fe7-4583-8ac6-e2adc465c8bb), /* all versions before 28 share IID_IXAudio */ | 
 | ] | 
 | /* XAudio2 2.2's IXAudio2 interface. Actually called IXAudio2 in the Jun 2010 | 
 |  * DX SDK */ | 
 | interface IXAudio22 : IUnknown | 
 | { | 
 |     HRESULT GetDeviceCount([out] UINT32* pCount); | 
 |  | 
 |     HRESULT GetDeviceDetails( | 
 |         [in] UINT32 Index, | 
 |         [out] XAUDIO2_DEVICE_DETAILS* pDeviceDetails); | 
 |  | 
 |     HRESULT Initialize( | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_PROCESSOR)] XAUDIO2_PROCESSOR XAudio2Processor); | 
 |  | 
 |     HRESULT RegisterForCallbacks([in] IXAudio2EngineCallback* pCallback); | 
 |  | 
 |     void UnregisterForCallbacks([in] IXAudio2EngineCallback* pCallback); | 
 |  | 
 |     HRESULT CreateSourceVoice( | 
 |         [out] IXAudio2SourceVoice** ppSourceVoice, | 
 |         [in] const WAVEFORMATEX* pSourceFormat, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_FREQ_RATIO)] float MaxFrequencyRatio, | 
 |         [in, defaultvalue(NULL)] IXAudio2VoiceCallback* pCallback, | 
 |         [in, defaultvalue(NULL)] const XAUDIO23_VOICE_SENDS* pSendList, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT CreateSubmixVoice( | 
 |         [out] IXAudio2SubmixVoice** ppSubmixVoice, | 
 |         [in] UINT32 InputChannels, | 
 |         [in] UINT32 InputSampleRate, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(0)] UINT32 ProcessingStage, | 
 |         [in, defaultvalue(NULL)] const XAUDIO23_VOICE_SENDS* pSendList, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT CreateMasteringVoice( | 
 |         [out] IXAudio2MasteringVoice** ppMasteringVoice, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_CHANNELS)] UINT32 InputChannels, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_SAMPLERATE)] UINT32 InputSampleRate, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(0)] UINT32 DeviceIndex, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT StartEngine(); | 
 |  | 
 |     void StopEngine(); | 
 |  | 
 |     HRESULT CommitChanges([in] UINT32 OperationSet); | 
 |  | 
 |     void GetPerformanceData([out] XAUDIO22_PERFORMANCE_DATA* pPerfData); | 
 |  | 
 |     [local] void SetDebugConfiguration( | 
 |         [in] const XAUDIO2_DEBUG_CONFIGURATION* pDebugConfiguration, | 
 |         [in, defaultvalue(NULL)] void* pReserved); | 
 | } | 
 |  | 
 | [ | 
 |     object, | 
 |     uuid(8bcf1f58-9fe7-4583-8ac6-e2adc465c8bb), /* all versions before 28 share IID_IXAudio */ | 
 | ] | 
 | /* XAudio2 2.3's IXAudio2 interface. Actually called IXAudio2 in the Nov 2008 | 
 |  * DX SDK */ | 
 | interface IXAudio23 : IUnknown | 
 | { | 
 |     HRESULT GetDeviceCount([out] UINT32* pCount); | 
 |  | 
 |     HRESULT GetDeviceDetails( | 
 |         [in] UINT32 Index, | 
 |         [out] XAUDIO2_DEVICE_DETAILS* pDeviceDetails); | 
 |  | 
 |     HRESULT Initialize( | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_PROCESSOR)] XAUDIO2_PROCESSOR XAudio2Processor); | 
 |  | 
 |     HRESULT RegisterForCallbacks([in] IXAudio2EngineCallback* pCallback); | 
 |  | 
 |     void UnregisterForCallbacks([in] IXAudio2EngineCallback* pCallback); | 
 |  | 
 |     HRESULT CreateSourceVoice( | 
 |         [out] IXAudio2SourceVoice** ppSourceVoice, | 
 |         [in] const WAVEFORMATEX* pSourceFormat, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_FREQ_RATIO)] float MaxFrequencyRatio, | 
 |         [in, defaultvalue(NULL)] IXAudio2VoiceCallback* pCallback, | 
 |         [in, defaultvalue(NULL)] const XAUDIO23_VOICE_SENDS* pSendList, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT CreateSubmixVoice( | 
 |         [out] IXAudio2SubmixVoice** ppSubmixVoice, | 
 |         [in] UINT32 InputChannels, | 
 |         [in] UINT32 InputSampleRate, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(0)] UINT32 ProcessingStage, | 
 |         [in, defaultvalue(NULL)] const XAUDIO23_VOICE_SENDS* pSendList, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT CreateMasteringVoice( | 
 |         [out] IXAudio2MasteringVoice** ppMasteringVoice, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_CHANNELS)] UINT32 InputChannels, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_SAMPLERATE)] UINT32 InputSampleRate, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(0)] UINT32 DeviceIndex, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT StartEngine(); | 
 |  | 
 |     void StopEngine(); | 
 |  | 
 |     HRESULT CommitChanges([in] UINT32 OperationSet); | 
 |  | 
 |     void GetPerformanceData([out] XAUDIO2_PERFORMANCE_DATA* pPerfData); | 
 |  | 
 |     [local] void SetDebugConfiguration( | 
 |         [in] const XAUDIO2_DEBUG_CONFIGURATION* pDebugConfiguration, | 
 |         [in, defaultvalue(NULL)] void* pReserved); | 
 | } | 
 |  | 
 | [ | 
 |     object, | 
 |     uuid(8bcf1f58-9fe7-4583-8ac6-e2adc465c8bb), | 
 | ] | 
 | /* XAudio2 2.7's IXAudio2 interface. Actually called IXAudio2 in the Jun 2010 | 
 |  * DX SDK */ | 
 | interface IXAudio27 : IUnknown | 
 | { | 
 |     HRESULT GetDeviceCount([out] UINT32* pCount); | 
 |  | 
 |     HRESULT GetDeviceDetails( | 
 |         [in] UINT32 Index, | 
 |         [out] XAUDIO2_DEVICE_DETAILS* pDeviceDetails); | 
 |  | 
 |     HRESULT Initialize( | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_PROCESSOR)] XAUDIO2_PROCESSOR XAudio2Processor); | 
 |  | 
 |     HRESULT RegisterForCallbacks([in] IXAudio2EngineCallback* pCallback); | 
 |  | 
 |     void UnregisterForCallbacks([in] IXAudio2EngineCallback* pCallback); | 
 |  | 
 |     HRESULT CreateSourceVoice( | 
 |         [out] IXAudio2SourceVoice** ppSourceVoice, | 
 |         [in] const WAVEFORMATEX* pSourceFormat, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_FREQ_RATIO)] float MaxFrequencyRatio, | 
 |         [in, defaultvalue(NULL)] IXAudio2VoiceCallback* pCallback, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_VOICE_SENDS* pSendList, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT CreateSubmixVoice( | 
 |         [out] IXAudio2SubmixVoice** ppSubmixVoice, | 
 |         [in] UINT32 InputChannels, | 
 |         [in] UINT32 InputSampleRate, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(0)] UINT32 ProcessingStage, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_VOICE_SENDS* pSendList, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT CreateMasteringVoice( | 
 |         [out] IXAudio2MasteringVoice** ppMasteringVoice, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_CHANNELS)] UINT32 InputChannels, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_SAMPLERATE)] UINT32 InputSampleRate, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(0)] UINT32 DeviceIndex, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT StartEngine(); | 
 |  | 
 |     void StopEngine(); | 
 |  | 
 |     HRESULT CommitChanges([in] UINT32 OperationSet); | 
 |  | 
 |     void GetPerformanceData([out] XAUDIO2_PERFORMANCE_DATA* pPerfData); | 
 |  | 
 |     [local] void SetDebugConfiguration( | 
 |         [in] const XAUDIO2_DEBUG_CONFIGURATION* pDebugConfiguration, | 
 |         [in, defaultvalue(NULL)] void* pReserved); | 
 | } | 
 |  | 
 | /* XAudio2 2.8's IXAudio2 is identical to 2.9's */ | 
 | cpp_quote("DEFINE_GUID(IID_IXAudio28, 0x60d8dac8, 0x5aa1, 0x4e8e, 0xb5, 0x97, 0x2f, 0x5e, 0x28, 0x83, 0xd4, 0x84);") | 
 |  | 
 | [ | 
 |     object, | 
 |     uuid(2b02e3cf-2e0b-4ec3-be45-1b2a3fe7210d) | 
 | ] | 
 | /* XAudio2 2.9's IXAudio2 interface. */ | 
 | interface IXAudio2 : IUnknown | 
 | { | 
 |     HRESULT RegisterForCallbacks([in] IXAudio2EngineCallback* pCallback); | 
 |  | 
 |     void UnregisterForCallbacks([in] IXAudio2EngineCallback* pCallback); | 
 |  | 
 |     HRESULT CreateSourceVoice( | 
 |         [out] IXAudio2SourceVoice** ppSourceVoice, | 
 |         [in] const WAVEFORMATEX* pSourceFormat, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_FREQ_RATIO)] float MaxFrequencyRatio, | 
 |         [in, defaultvalue(NULL)] IXAudio2VoiceCallback* pCallback, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_VOICE_SENDS* pSendList, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT CreateSubmixVoice( | 
 |         [out] IXAudio2SubmixVoice** ppSubmixVoice, | 
 |         [in] UINT32 InputChannels, | 
 |         [in] UINT32 InputSampleRate, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(0)] UINT32 ProcessingStage, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_VOICE_SENDS* pSendList, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain); | 
 |  | 
 |     HRESULT CreateMasteringVoice( | 
 |         [out] IXAudio2MasteringVoice** ppMasteringVoice, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_CHANNELS)] UINT32 InputChannels, | 
 |         [in, defaultvalue(XAUDIO2_DEFAULT_SAMPLERATE)] UINT32 InputSampleRate, | 
 |         [in, defaultvalue(0)] UINT32 Flags, | 
 |         [in, defaultvalue(NULL)] LPCWSTR DeviceId, | 
 |         [in, defaultvalue(NULL)] const XAUDIO2_EFFECT_CHAIN* pEffectChain, | 
 |         [in, defaultvalue(AudioCategory_GameEffects)] AUDIO_STREAM_CATEGORY StreamCategory); | 
 |  | 
 |     HRESULT StartEngine(); | 
 |  | 
 |     void StopEngine(); | 
 |  | 
 |     HRESULT CommitChanges([in] UINT32 OperationSet); | 
 |  | 
 |     void GetPerformanceData([out] XAUDIO2_PERFORMANCE_DATA* pPerfData); | 
 |  | 
 |     [local] void SetDebugConfiguration( | 
 |         [in] const XAUDIO2_DEBUG_CONFIGURATION* pDebugConfiguration, | 
 |         [in, defaultvalue(NULL)] void* pReserved); | 
 | } | 
 |  | 
 | const UINT32 XAUDIO2_DEBUG_ENGINE = 1; | 
 | const UINT32 XAUDIO2_VOICE_NOPITCH = 2; | 
 | const UINT32 XAUDIO2_VOICE_NOSRC = 4; | 
 | const UINT32 XAUDIO2_VOICE_USEFILTER = 8; | 
 | const UINT32 XAUDIO2_VOICE_MUSIC = 16; | 
 | const UINT32 XAUDIO2_PLAY_TAILS = 32; | 
 | const UINT32 XAUDIO2_END_OF_STREAM = 64; | 
 | const UINT32 XAUDIO2_SEND_USEFILTER = 128; | 
 | const UINT32 XAUDIO2_VOICE_NOSAMPLESPLAYED = 256; | 
 |  | 
 | const XAUDIO2_FILTER_TYPE XAUDIO2_DEFAULT_FILTER_TYPE = LowPassFilter; | 
 | const float XAUDIO2_DEFAULT_FILTER_FREQUENCY = XAUDIO2_MAX_FILTER_FREQUENCY; | 
 | const float XAUDIO2_DEFAULT_FILTER_ONEOVERQ = 1.0; | 
 | const UINT32 XAUDIO2_QUANTUM_NUMERATOR = 1; | 
 | const UINT32 XAUDIO2_QUANTUM_DENOMINATOR = 100; | 
 | const float XAUDIO2_QUANTUM_MS = (1000.0 * XAUDIO2_QUANTUM_NUMERATOR / XAUDIO2_QUANTUM_DENOMINATOR); | 
 |  | 
 | /* use cpp_quote to retain the HRESULT type in header file */ | 
 | cpp_quote("#define XAUDIO2_E_INVALID_CALL ((HRESULT)0x88960001)") | 
 | cpp_quote("#define XAUDIO2_E_XMA_DECODER_ERROR ((HRESULT)0x88960002)") | 
 | cpp_quote("#define XAUDIO2_E_XAPO_CREATION_FAILED ((HRESULT)0x88960003)") | 
 | cpp_quote("#define XAUDIO2_E_DEVICE_INVALIDATED ((HRESULT)0x88960004)") | 
 |  | 
 | /* xaudio 2.0 error codes */ | 
 | cpp_quote("#define XAUDIO20_E_XMA_DECODER_ERROR ((HRESULT)0x88960001)") | 
 | cpp_quote("#define XAUDIO20_E_XAPO_CREATION_FAILED ((HRESULT)0x88960002)") | 
 | cpp_quote("#define XAUDIO20_E_DEVICE_INVALIDATED ((HRESULT)0x88960003)") | 
 |  | 
 | cpp_quote("#ifdef XAUDIO2_HELPER_FUNCTIONS") | 
 | cpp_quote("#define _USE_MATH_DEFINES") | 
 | cpp_quote("#include <math.h>") | 
 | cpp_quote("inline static float XAudio2DecibelsToAmplitudeRatio(float decibels) { return powf(10.0f, decibels/20.0f); }") | 
 | cpp_quote("inline static float XAudio2AmplitudeRatioToDecibels(float volume) { if (volume == 0) { return -3.402823466e+38f; } return 20.0f * log10f(volume); }") | 
 | cpp_quote("inline static float XAudio2SemitonesToFrequencyRatio(float semitones) { return powf(2.0f, semitones/12.0f); }") | 
 | cpp_quote("inline static float XAudio2FrequencyRatioToSemitones(float freqratio) { return 39.86313713864835f * log10f(freqratio); }") | 
 | cpp_quote("inline static float XAudio2CutoffFrequencyToRadians(float cutofffreq, UINT32 samplerate) { if ((UINT32)(cutofffreq * 6.0f) >= samplerate) { return XAUDIO2_MAX_FILTER_FREQUENCY; } return 2.0f * sinf((float)M_PI * cutofffreq / samplerate); }") | 
 | cpp_quote("inline static float XAudio2RadiansToCutoffFrequency(float radians, float samplerate) { return samplerate * asinf(radians/2.0f) / (float)M_PI; }") | 
 | cpp_quote("#endif") | 
 |  | 
 | cpp_quote("HRESULT WINAPI XAudio2Create(IXAudio2** pxaudio2, UINT32 flags, XAUDIO2_PROCESSOR processor);") | 
 |  | 
 | cpp_quote("#include <poppack.h>") |