/**************************************************************************
*
* Copyright (c) Microsoft Corporation. All rights reserved.
*
* File: xaudio2.h
* Content: Declarations for the XAudio2 game audio API.
*
**************************************************************************/
#pragma once
#ifndef __XAUDIO2_INCLUDED__
#define __XAUDIO2_INCLUDED__
/**************************************************************************
*
* XAudio2 COM object class and interface IDs.
*
**************************************************************************/
#include <basetyps.h>
// XAudio 2.8
interface __declspec(uuid("60d8dac8-5aa1-4e8e-b597-2f5e2883d484")) IXAudio2;
// Ignore the rest of this header if only the GUID definitions were requested
#ifndef GUID_DEFS_ONLY
#include <objbase.h> // Windows COM declarations
#include <sal.h> // Markers for documenting API semantics
#include <mmreg.h> // Basic data types and constants for audio work
#include <audiosessiontypes.h> // For AUDIO_STREAM_CATEGORY
// All structures defined in this file use tight field packing
#pragma pack(push, 1)
/**************************************************************************
*
* XAudio2 constants, flags and error codes.
*
**************************************************************************/
// Numeric boundary values
#define XAUDIO2_MAX_BUFFER_BYTES 0x80000000 // Maximum bytes allowed in a source buffer
#define XAUDIO2_MAX_QUEUED_BUFFERS 64 // Maximum buffers allowed in a voice queue
#define XAUDIO2_MAX_BUFFERS_SYSTEM 2 // Maximum buffers allowed for system threads (Xbox 360 only)
#define XAUDIO2_MAX_AUDIO_CHANNELS 64 // Maximum channels in an audio stream
#define XAUDIO2_MIN_SAMPLE_RATE 1000 // Minimum audio sample rate supported
#define XAUDIO2_MAX_SAMPLE_RATE 200000 // Maximum audio sample rate supported
#define XAUDIO2_MAX_VOLUME_LEVEL 16777216.0f // Maximum acceptable volume level (2^24)
#define XAUDIO2_MIN_FREQ_RATIO (1/1024.0f) // Minimum SetFrequencyRatio argument
#define XAUDIO2_MAX_FREQ_RATIO 1024.0f // Maximum MaxFrequencyRatio argument
#define XAUDIO2_DEFAULT_FREQ_RATIO 2.0f // Default MaxFrequencyRatio argument
#define XAUDIO2_MAX_FILTER_ONEOVERQ 1.5f // Maximum XAUDIO2_FILTER_PARAMETERS.OneOverQ
#define XAUDIO2_MAX_FILTER_FREQUENCY 1.0f // Maximum XAUDIO2_FILTER_PARAMETERS.Frequency
#define XAUDIO2_MAX_LOOP_COUNT 254 // Maximum non-infinite XAUDIO2_BUFFER.LoopCount
#define XAUDIO2_MAX_INSTANCES 8 // Maximum simultaneous XAudio2 objects on Xbox 360
// For XMA voices on Xbox 360 there is an additional restriction on the MaxFrequencyRatio
// argument and the voice's sample rate: the product of these numbers cannot exceed 600000
// for one-channel voices or 300000 for voices with more than one channel.
#define XAUDIO2_MAX_RATIO_TIMES_RATE_XMA_MONO 600000
#define XAUDIO2_MAX_RATIO_TIMES_RATE_XMA_MULTICHANNEL 300000
// Numeric values with special meanings
#define XAUDIO2_COMMIT_NOW 0 // Used as an OperationSet argument
#define XAUDIO2_COMMIT_ALL 0 // Used in IXAudio2::CommitChanges
#define XAUDIO2_INVALID_OPSET (UINT32)(-1) // Not allowed for OperationSet arguments
#define XAUDIO2_NO_LOOP_REGION 0 // Used in XAUDIO2_BUFFER.LoopCount
#define XAUDIO2_LOOP_INFINITE 255 // Used in XAUDIO2_BUFFER.LoopCount
#define XAUDIO2_DEFAULT_CHANNELS 0 // Used in CreateMasteringVoice
#define XAUDIO2_DEFAULT_SAMPLERATE 0 // Used in CreateMasteringVoice
// Flags
#define XAUDIO2_DEBUG_ENGINE 0x0001 // Used in XAudio2Create
#define XAUDIO2_VOICE_NOPITCH 0x0002 // Used in IXAudio2::CreateSourceVoice
#define XAUDIO2_VOICE_NOSRC 0x0004 // Used in IXAudio2::CreateSourceVoice
#define XAUDIO2_VOICE_USEFILTER 0x0008 // Used in IXAudio2::CreateSource/SubmixVoice
#define XAUDIO2_PLAY_TAILS 0x0020 // Used in IXAudio2SourceVoice::Stop
#define XAUDIO2_END_OF_STREAM 0x0040 // Used in XAUDIO2_BUFFER.Flags
#define XAUDIO2_SEND_USEFILTER 0x0080 // Used in XAUDIO2_SEND_DESCRIPTOR.Flags
#define XAUDIO2_VOICE_NOSAMPLESPLAYED 0x0100 // Used in IXAudio2SourceVoice::GetState
#define XAUDIO2_STOP_ENGINE_WHEN_IDLE 0x2000 // Used in XAudio2Create to force the engine to Stop when no source voices are Started, and Start when a voice is Started
#define XAUDIO2_1024_QUANTUM 0x8000 // Used in XAudio2Create to specify nondefault processing quantum of 21.33 ms (1024 samples at 48KHz)
#define XAUDIO2_NO_VIRTUAL_AUDIO_CLIENT 0x10000 // Used in CreateMasteringVoice to create a virtual audio client
// Default parameters for the built-in filter
#define XAUDIO2_DEFAULT_FILTER_TYPE LowPassFilter
#define XAUDIO2_DEFAULT_FILTER_FREQUENCY XAUDIO2_MAX_FILTER_FREQUENCY
#define XAUDIO2_DEFAULT_FILTER_ONEOVERQ 1.0f
// Internal XAudio2 constants
// The audio frame quantum can be calculated by reducing the fraction:
// SamplesPerAudioFrame / SamplesPerSecond
#define XAUDIO2_QUANTUM_NUMERATOR 1 // On Windows, XAudio2 processes audio
#define XAUDIO2_QUANTUM_DENOMINATOR 100 // in 10ms chunks (= 1/100 seconds)
#define XAUDIO2_QUANTUM_MS (1000.0f * XAUDIO2_QUANTUM_NUMERATOR / XAUDIO2_QUANTUM_DENOMINATOR)
// XAudio2 error codes
#define FACILITY_XAUDIO2 0x896
#define XAUDIO2_E_INVALID_CALL 0x88960001 // An API call or one of its arguments was illegal
#define XAUDIO2_E_XMA_DECODER_ERROR 0x88960002 // The XMA hardware suffered an unrecoverable error
#define XAUDIO2_E_XAPO_CREATION_FAILED 0x88960003 // XAudio2 failed to initialize an XAPO effect
#define XAUDIO2_E_DEVICE_INVALIDATED 0x88960004 // An audio device became unusable (unplugged, etc)
/**************************************************************************
*
* Forward declarations for the XAudio2 interfaces.
*
**************************************************************************/
#ifdef __cplusplus
#define FWD_DECLARE(x) interface x
#else
#define FWD_DECLARE(x) typedef interface x x
#endif
FWD_DECLARE(IXAudio2);
FWD_DECLARE(IXAudio2Voice);
FWD_DECLARE(IXAudio2SourceVoice);
FWD_DECLARE(IXAudio2SubmixVoice);
FWD_DECLARE(IXAudio2MasteringVoice);
FWD_DECLARE(IXAudio2EngineCallback);
FWD_DECLARE(IXAudio2VoiceCallback);
/**************************************************************************
*
* XAudio2 structures and enumerations.
*
**************************************************************************/
// Used in XAudio2Create, specifies which CPU(s) to use.
typedef UINT32 XAUDIO2_PROCESSOR;
#define Processor1 0x00000001
#define Processor2 0x00000002
#define Processor3 0x00000004
#define Processor4 0x00000008
#define Processor5 0x00000010
#define Processor6 0x00000020
#define Processor7 0x00000040
#define Processor8 0x00000080
#define Processor9 0x00000100
#define Processor10 0x00000200
#define Processor11 0x00000400
#define Processor12 0x00000800
#define Processor13 0x00001000
#define Processor14 0x00002000
#define Processor15 0x00004000
#define Processor16 0x00008000
#define Processor17 0x00010000
#define Processor18 0x00020000
#define Processor19 0x00040000
#define Processor20 0x00080000
#define Processor21 0x00100000
#define Processor22 0x00200000
#define Processor23 0x00400000
#define Processor24 0x00800000
#define Processor25 0x01000000
#define Processor26 0x02000000
#define Processor27 0x04000000
#define Processor28 0x08000000
#define Processor29 0x10000000
#define Processor30 0x20000000
#define Processor31 0x40000000
#define Processor32 0x80000000
#define XAUDIO2_ANY_PROCESSOR 0xffffffff
#define XAUDIO2_DEFAULT_PROCESSOR Processor1
// Returned by IXAudio2Voice::GetVoiceDetails
typedef struct XAUDIO2_VOICE_DETAILS
{
UINT32 CreationFlags; // Flags the voice was created with.
UINT32 ActiveFlags; // Flags currently active.
UINT32 InputChannels; // Channels in the voice's input audio.
UINT32 InputSampleRate; // Sample rate of the voice's input audio.
} XAUDIO2_VOICE_DETAILS;
// Used in XAUDIO2_VOICE_SENDS below
typedef struct XAUDIO2_SEND_DESCRIPTOR
{
UINT32 Flags; // Either 0 or XAUDIO2_SEND_USEFILTER.
IXAudio2Voice* pOutputVoice; // This send's destination voice.
} XAUDIO2_SEND_DESCRIPTOR;
// Used in the voice creation functions and in IXAudio2Voice::SetOutputVoices
typedef struct XAUDIO2_VOICE_SENDS
{
UINT32 SendCount; // Number of sends from this voice.
XAUDIO2_SEND_DESCRIPTOR* pSends; // Array of SendCount send descriptors.
} XAUDIO2_VOICE_SENDS;
// Used in XAUDIO2_EFFECT_CHAIN below
typedef struct XAUDIO2_EFFECT_DESCRIPTOR
{
IUnknown* pEffect; // Pointer to the effect object's IUnknown interface.
BOOL InitialState; // TRUE if the effect should begin in the enabled state.
UINT32 OutputChannels; // How many output channels the effect should produce.
} XAUDIO2_EFFECT_DESCRIPTOR;
// Used in the voice creation functions and in IXAudio2Voice::SetEffectChain
typedef struct XAUDIO2_EFFECT_CHAIN
{
UINT32 EffectCount; // Number of effects in this voice's effect chain.
XAUDIO2_EFFECT_DESCRIPTOR* pEffectDescriptors; // Array of effect descriptors.
} XAUDIO2_EFFECT_CHAIN;
// Used in XAUDIO2_FILTER_PARAMETERS below
typedef enum XAUDIO2_FILTER_TYPE
{
LowPassFilter, // Attenuates frequencies above the cutoff frequency (state-variable filter).
BandPassFilter, // Attenuates frequencies outside a given range (state-variable filter).
HighPassFilter, // Attenuates frequencies below the cutoff frequency (state-variable filter).
NotchFilter, // Attenuates frequencies inside a given range (state-variable filter).
LowPassOnePoleFilter, // Attenuates frequencies above the cutoff frequency (one-pole filter, XAUDIO2_FILTER_PARAMETERS.OneOverQ has no effect)
HighPassOnePoleFilter // Attenuates frequencies below the cutoff frequency (one-pole filter, XAUDIO2_FILTER_PARAMETERS.OneOverQ has no effect)
} XAUDIO2_FILTER_TYPE;
// Used in IXAudio2Voice::Set/GetFilterParameters and Set/GetOutputFilterParameters
typedef struct XAUDIO2_FILTER_PARAMETERS
{
XAUDIO2_FILTER_TYPE Type; // Filter type.
float Frequency; // Filter coefficient.
// must be >= 0 and <= XAUDIO2_MAX_FILTER_FREQUENCY
// See XAudio2CutoffFrequencyToRadians() for state-variable filter types and
// XAudio2CutoffFrequencyToOnePoleCoefficient() for one-pole filter types.
float OneOverQ; // Reciprocal of the filter's quality factor Q;
// must be > 0 and <= XAUDIO2_MAX_FILTER_ONEOVERQ.
// Has no effect for one-pole filters.
} XAUDIO2_FILTER_PARAMETERS;
// Used in IXAudio2SourceVoice::SubmitSourceBuffer
typedef struct XAUDIO2_BUFFER
{
UINT32 Flags; // Either 0 or XAUDIO2_END_OF_STREAM.
UINT32 AudioBytes; // Size of the audio data buffer in bytes.
const BYTE* pAudioData; // Pointer to the audio data buffer.
UINT32 PlayBegin; // First sample in this buffer to be played.
UINT32 PlayLength; // Length of the region to be played in samples,
// or 0 to play the whole buffer.
UINT32 LoopBegin; // First sample of the region to be looped.
UINT32 LoopLength; // Length of the desired loop region in samples,
// or 0 to loop the entire buffer.
UINT32 LoopCount; // Number of times to repeat the loop region,
// or XAUDIO2_LOOP_INFINITE to loop forever.
void* pContext; // Context value to be passed back in callbacks.
} XAUDIO2_BUFFER;
// Used in IXAudio2SourceVoice::SubmitSourceBuffer when submitting XWMA data.
// NOTE: If an XWMA sound is submitted in more than one buffer, each buffer's
// pDecodedPacketCumulativeBytes[PacketCount-1] value must be subtracted from
// all the entries in the next buffer's pDecodedPacketCumulativeBytes array.
// And whether a sound is submitted in more than one buffer or not, the final
// buffer of the sound should use the XAUDIO2_END_OF_STREAM flag, or else the
// client must call IXAudio2SourceVoice::Discontinuity after submitting it.
typedef struct XAUDIO2_BUFFER_WMA
{
const UINT32* pDecodedPacketCumulativeBytes; // Decoded packet's cumulative size array.
// Each element is the number of bytes accumulated
// when the corresponding XWMA packet is decoded in
// order. The array must have PacketCount elements.
UINT32 PacketCount; // Number of XWMA packets submitted. Must be >= 1 and
// divide evenly into XAUDIO2_BUFFER.AudioBytes.
} XAUDIO2_BUFFER_WMA;
// Returned by IXAudio2SourceVoice::GetState
typedef struct XAUDIO2_VOICE_STATE
{
void* pCurrentBufferContext; // The pContext value provided in the XAUDIO2_BUFFER
// that is currently being processed, or NULL if
// there are no buffers in the queue.
UINT32 BuffersQueued; // Number of buffers currently queued on the voice
// (including the one that is being processed).
UINT64 SamplesPlayed; // Total number of samples produced by the voice since
// it began processing the current audio stream.
// If XAUDIO2_VOICE_NOSAMPLESPLAYED is specified
// in the call to IXAudio2SourceVoice::GetState,
// this member will not be calculated, saving CPU.
} XAUDIO2_VOICE_STATE;
// Returned by IXAudio2::GetPerformanceData
typedef struct XAUDIO2_PERFORMANCE_DATA
{
// CPU usage information
UINT64 AudioCyclesSinceLastQuery; // CPU cycles spent on audio processing since the
// last call to StartEngine or GetPerformanceData.
UINT64 TotalCyclesSinceLastQuery; // Total CPU cycles elapsed since the last call
// (only counts the CPU XAudio2 is running on).
UINT32 MinimumCyclesPerQuantum; // Fewest CPU cycles spent processing any one
// audio quantum since the last call.
UINT32 MaximumCyclesPerQuantum; // Most CPU cycles spent processing any one
// audio quantum since the last call.
// Memory usage information
UINT32 MemoryUsageInBytes; // Total heap space currently in use.
// Audio latency and glitching information
UINT32 CurrentLatencyInSamples; // Minimum delay from when a sample is read from a
// source buffer to when it reaches the speakers.
UINT32 GlitchesSinceEngineStarted; // Audio dropouts since the engine was started.
// Data about XAudio2's current workload
UINT32 ActiveSourceVoiceCount; // Source voices currently playing.
UINT32 TotalSourceVoiceCount; // Source voices currently existing.
UINT32 ActiveSubmixVoiceCount; // Submix voices currently playing/existing.
UINT32 ActiveResamplerCount; // Resample xAPOs currently active.
UINT32 ActiveMatrixMixCount; // MatrixMix xAPOs currently active.
// Usage of the hardware XMA decoder (Xbox 360 only)
UINT32 ActiveXmaSourceVoices; // Number of source voices decoding XMA data.
UINT32 ActiveXmaStreams; // A voice can use more than one XMA stream.
} XAUDIO2_PERFORMANCE_DATA;
// Used in IXAudio2::SetDebugConfiguration
typedef struct XAUDIO2_DEBUG_CONFIGURATION
{
UINT32 TraceMask; // Bitmap of enabled debug message types.
UINT32 BreakMask; // Message types that will break into the debugger.
BOOL LogThreadID; // Whether to log the thread ID with each message.
BOOL LogFileline; // Whether to log the source file and line number.
BOOL LogFunctionName; // Whether to log the function name.
BOOL LogTiming; // Whether to log message timestamps.
} XAUDIO2_DEBUG_CONFIGURATION;
// Values for the TraceMask and BreakMask bitmaps. Only ERRORS and WARNINGS
// are valid in BreakMask. WARNINGS implies ERRORS, DETAIL implies INFO, and
// FUNC_CALLS implies API_CALLS. By default, TraceMask is ERRORS and WARNINGS
// and all the other settings are zero.
#define XAUDIO2_LOG_ERRORS 0x0001 // For handled errors with serious effects.
#define XAUDIO2_LOG_WARNINGS 0x0002 // For handled errors that may be recoverable.
#define XAUDIO2_LOG_INFO 0x0004 // Informational chit-chat (e.g. state changes).
#define XAUDIO2_LOG_DETAIL 0x0008 // More detailed chit-chat.
#define XAUDIO2_LOG_API_CALLS 0x0010 // Public API function entries and exits.
#define XAUDIO2_LOG_FUNC_CALLS 0x0020 // Internal function entries and exits.
#define XAUDIO2_LOG_TIMING 0x0040 // Delays detected and other timing data.
#define XAUDIO2_LOG_LOCKS 0x0080 // Usage of critical sections and mutexes.
#define XAUDIO2_LOG_MEMORY 0x0100 // Memory heap usage information.
#define XAUDIO2_LOG_STREAMING 0x1000 // Audio streaming information.
/**************************************************************************
*
* IXAudio2: Top-level XAudio2 COM interface.
*
**************************************************************************/
// Use default arguments if compiling as C++
#ifdef __cplusplus
#define X2DEFAULT(x) =x
#else
#define X2DEFAULT(x)
#endif
#undef INTERFACE
#define INTERFACE IXAudio2
DECLARE_INTERFACE_(IXAudio2, IUnknown)
{
// NAME: IXAudio2::QueryInterface
// DESCRIPTION: Queries for a given COM interface on the XAudio2 object.
// Only IID_IUnknown and IID_IXAudio2 are supported.
//
// ARGUMENTS:
// riid - IID of the interface to be obtained.
// ppvInterface - Returns a pointer to the requested interface.
//
STDMETHOD(QueryInterface) (THIS_ REFIID riid, _Outptr_ void** ppvInterface) PURE;
// NAME: IXAudio2::AddRef
// DESCRIPTION: Adds a reference to the XAudio2 object.
//
STDMETHOD_(ULONG, AddRef) (THIS) PURE;
// NAME: IXAudio2::Release
// DESCRIPTION: Releases a reference to the XAudio2 object.
//
STDMETHOD_(ULONG, Release) (THIS) PURE;
// NAME: IXAudio2::RegisterForCallbacks
// DESCRIPTION: Adds a new client to receive XAudio2's engine callbacks.
//
// ARGUMENTS:
// pCallback - Callback interface to be called during each processing pass.
//
STDMETHOD(RegisterForCallbacks) (_In_ IXAudio2EngineCallback* pCallback) PURE;
// NAME: IXAudio2::UnregisterForCallbacks
// DESCRIPTION: Removes an existing receiver of XAudio2 engine callbacks.
//
// ARGUMENTS:
// pCallback - Previously registered callback interface to be removed.
//
STDMETHOD_(void, UnregisterForCallbacks) (_In_ IXAudio2EngineCallback* pCallback) PURE;
// NAME: IXAudio2::CreateSourceVoice
// DESCRIPTION: Creates and configures a source voice.
//
// ARGUMENTS:
// ppSourceVoice - Returns the new object's IXAudio2SourceVoice interface.
// pSourceFormat - Format of the audio that will be fed to the voice.
// Flags - XAUDIO2_VOICE flags specifying the source voice's behavior.
// MaxFrequencyRatio - Maximum SetFrequencyRatio argument to be allowed.
// pCallback - Optional pointer to a client-provided callback interface.
// pSendList - Optional list of voices this voice should send audio to.
// pEffectChain - Optional list of effects to apply to the audio data.
//
STDMETHOD(CreateSourceVoice) (THIS_ _Outptr_ IXAudio2SourceVoice** ppSourceVoice,
_In_ const WAVEFORMATEX* pSourceFormat,
UINT32 Flags X2DEFAULT(0),
float MaxFrequencyRatio X2DEFAULT(XAUDIO2_DEFAULT_FREQ_RATIO),
_In_opt_ IXAudio2VoiceCallback* pCallback X2DEFAULT(NULL),
_In_opt_ const XAUDIO2_VOICE_SENDS* pSendList X2DEFAULT(NULL),
_In_opt_ const XAUDIO2_EFFECT_CHAIN* pEffectChain X2DEFAULT(NULL)) PURE;
// NAME: IXAudio2::CreateSubmixVoice
// DESCRIPTION: Creates and configures a submix voice.
//
// ARGUMENTS:
// ppSubmixVoice - Returns the new object's IXAudio2SubmixVoice interface.
// InputChannels - Number of channels in this voice's input audio data.
// InputSampleRate - Sample rate of this voice's input audio data.
// Flags - XAUDIO2_VOICE flags specifying the submix voice's behavior.
// ProcessingStage - Arbitrary number that determines the processing order.
// pSendList - Optional list of voices this voice should send audio to.
// pEffectChain - Optional list of effects to apply to the audio data.
//
STDMETHOD(CreateSubmixVoice) (THIS_ _Outptr_ IXAudio2SubmixVoice** ppSubmixVoice,
UINT32 InputChannels, UINT32 InputSampleRate,
UINT32 Flags X2DEFAULT(0), UINT32 ProcessingStage X2DEFAULT(0),
_In_opt_ const XAUDIO2_VOICE_SENDS* pSendList X2DEFAULT(NULL),
_In_opt_ const XAUDIO2_EFFECT_CHAIN* pEffectChain X2DEFAULT(NULL)) PURE;
// NAME: IXAudio2::CreateMasteringVoice
// DESCRIPTION: Creates and configures a mastering voice.
//
// ARGUMENTS:
// ppMasteringVoice - Returns the new object's IXAudio2MasteringVoice interface.
// InputChannels - Number of channels in this voice's input audio data.
// InputSampleRate - Sample rate of this voice's input audio data.
// Flags - XAUDIO2_VOICE flags specifying the mastering voice's behavior.
// szDeviceId - Identifier of the device to receive the output audio.
// pEffectChain - Optional list of effects to apply to the audio data.
// StreamCategory - The audio stream category to use for this mastering voice
//
STDMETHOD(CreateMasteringVoice) (THIS_ _Outptr_ IXAudio2MasteringVoice** ppMasteringVoice,
UINT32 InputChannels X2DEFAULT(XAUDIO2_DEFAULT_CHANNELS),
UINT32 InputSampleRate X2DEFAULT(XAUDIO2_DEFAULT_SAMPLERATE),
UINT32 Flags X2DEFAULT(0), _In_opt_z_ LPCWSTR szDeviceId X2DEFAULT(NULL),
_In_opt_ const XAUDIO2_EFFECT_CHAIN* pEffectChain X2DEFAULT(NULL),
_In_ AUDIO_STREAM_CATEGORY StreamCategory X2DEFAULT(AudioCategory_GameEffects)) PURE;
// NAME: IXAudio2::StartEngine
// DESCRIPTION: Creates and starts the audio processing thread.
//
STDMETHOD(StartEngine) (THIS) PURE;
// NAME: IXAudio2::StopEngine
// DESCRIPTION: Stops and destroys the audio processing thread.
//
STDMETHOD_(void, StopEngine) (THIS) PURE;
// NAME: IXAudio2::CommitChanges
// DESCRIPTION: Atomically applies a set of operations previously tagged
// with a given identifier.
//
// ARGUMENTS:
// OperationSet - Identifier of the set of operations to be applied.
//
STDMETHOD(CommitChanges) (THIS_ UINT32 OperationSet) PURE;
// NAME: IXAudio2::GetPerformanceData
// DESCRIPTION: Returns current resource usage details: memory, CPU, etc.
//
// ARGUMENTS:
// pPerfData - Returns the performance data structure.
//
STDMETHOD_(void, GetPerformanceData) (THIS_ _Out_ XAUDIO2_PERFORMANCE_DATA* pPerfData) PURE;
// NAME: IXAudio2::SetDebugConfiguration
// DESCRIPTION: Configures XAudio2's debug output (in debug builds only).
//
// ARGUMENTS:
// pDebugConfiguration - Structure describing the debug output behavior.
// pReserved - Optional parameter; must be NULL.
//
STDMETHOD_(void, SetDebugConfiguration) (THIS_ _In_opt_ const XAUDIO2_DEBUG_CONFIGURATION* pDebugConfiguration,
_Reserved_ void* pReserved X2DEFAULT(NULL)) PURE;
};
/**************************************************************************
*
* IXAudio2Voice: Base voice management interface.
*
**************************************************************************/
#undef INTERFACE
#define INTERFACE IXAudio2Voice
DECLARE_INTERFACE(IXAudio2Voice)
{
// These methods are declared in a macro so that the same declarations
// can be used in the derived voice types (IXAudio2SourceVoice, etc).
#define Declare_IXAudio2Voice_Methods() \
\
/* NAME: IXAudio2Voice::GetVoiceDetails
// DESCRIPTION: Returns the basic characteristics of this voice.
//
// ARGUMENTS:
// pVoiceDetails - Returns the voice's details.
*/\
STDMETHOD_(void, GetVoiceDetails) (THIS_ _Out_ XAUDIO2_VOICE_DETAILS* pVoiceDetails) PURE; \
\
/* NAME: IXAudio2Voice::SetOutputVoices
// DESCRIPTION: Replaces the set of submix/mastering voices that receive
// this voice's output.
//
// ARGUMENTS:
// pSendList - Optional list of voices this voice should send audio to.
*/\
STDMETHOD(SetOutputVoices) (THIS_ _In_opt_ const XAUDIO2_VOICE_SENDS* pSendList) PURE; \
\
/* NAME: IXAudio2Voice::SetEffectChain
// DESCRIPTION: Replaces this voice's current effect chain with a new one.
//
// ARGUMENTS:
// pEffectChain - Structure describing the new effect chain to be used.
*/\
STDMETHOD(SetEffectChain) (THIS_ _In_opt_ const XAUDIO2_EFFECT_CHAIN* pEffectChain) PURE; \
\
/* NAME: IXAudio2Voice::EnableEffect
// DESCRIPTION: Enables an effect in this voice's effect chain.
//
// ARGUMENTS:
// EffectIndex - Index of an effect within this voice's effect chain.
// OperationSet - Used to identify this call as part of a deferred batch.
*/\
STDMETHOD(EnableEffect) (THIS_ UINT32 EffectIndex, \
UINT32 OperationSet X2DEFAULT(XAUDIO2_COMMIT_NOW)) PURE; \
\
/* NAME: IXAudio2Voice::DisableEffect
// DESCRIPTION: Disables an effect in this voice's effect chain.
//
// ARGUMENTS:
// EffectIndex - Index of an effect within this voice's effect chain.
// OperationSet - Used to identify this call as part of a deferred batch.
*/\
STDMETHOD(DisableEffect) (THIS_ UINT32 EffectIndex, \
UINT32 OperationSet X2DEFAULT(XAUDIO2_COMMIT_NOW)) PURE; \
\
/* NAME: IXAudio2Voice::GetEffectState
// DESCRIPTION: Returns the running state of an effect.
//
// ARGUMENTS:
// EffectIndex - Index of an effect within this voice's effect chain.
// pEnabled - Returns the enabled/disabled state of the given effect.
*/\
STDMETHOD_(void, GetEffectState) (THIS_ UINT32 EffectIndex, _Out_ BOOL* pEnabled) PURE; \
\
/* NAME: IXAudio2Voice::SetEffectParameters
// DESCRIPTION: Sets effect-specific parameters.
//
// REMARKS: Unlike IXAPOParameters::SetParameters, this method may
// be called from any thread. XAudio2 implements
// appropriate synchronization to copy the parameters to the
// realtime audio processing thread.
//
// ARGUMENTS:
// EffectIndex - Index of an effect within this voice's effect chain.
// pParameters - Pointer to an effect-specific parameters block.
// ParametersByteSize - Size of the pParameters array in bytes.
// OperationSet - Used to identify this call as part of a deferred batch.
*/\
STDMETHOD(SetEffectParameters) (THIS_ UINT32 EffectIndex, \
_In_reads_bytes_(ParametersByteSize) const void* pParameters, \
UINT32 ParametersByteSize, \
UINT32 OperationSet X2DEFAULT(XAUDIO2_COMMIT_NOW)) PURE; \
\
/* NAME: IXAudio2Voice::GetEffectParameters
// DESCRIPTION: Obtains the current effect-specific parameters.
//
// ARGUMENTS:
// EffectIndex - Index of an effect within this voice's effect chain.
// pParameters - Returns the current values of the effect-specific parameters.
// ParametersByteSize - Size of the pParameters array in bytes.
*/\
STDMETHOD(GetEffectParameters) (THIS_ UINT32 EffectIndex, \
_Out_writes_bytes_(ParametersByteSize) void* pParameters, \
UINT32 ParametersByteSize) PURE; \
\
/* NAME: IXAudio2Voice::SetFilterParameters
// DESCRIPTION: Sets this voice's filter parameters.
//
// ARGUMENTS:
// pParameters - Pointer to the filter's parameter structure.
// OperationSet - Used to identify this call as part of a deferred batch.
*/\
STDMETHOD(SetFilterParameters) (THIS_ _In_ const XAUDIO2_FILTER_PARAMETERS* pParameters, \
UINT32 OperationSet X2DEFAULT(XAUDIO2_COMMIT_NOW)) PURE; \
\
/* NAME: IXAudio2Voice::GetFilterParameters
// DESCRIPTION: Returns this voice's current filter parameters.
//
// ARGUMENTS:
// pParameters - Returns the filter parameters.
*/\
STDMETHOD_(void, GetFilterParameters) (THIS_ _Out_ XAUDIO2_FILTER_PARAMETERS* pParameters) PURE; \
\
/* NAME: IXAudio2Voice::SetOutputFilterParameters
// DESCRIPTION: Sets the filter parameters on one of this voice's sends.
//
// ARGUMENTS:
// pDestinationVoice - Destination voice of the send whose filter parameters will be set.
// pParameters - Pointer to the filter's parameter structure.
// OperationSet - Used to identify this call as part of a deferred batch.
*/\
STDMETHOD(SetOutputFilterParameters) (THIS_ _In_opt_ IXAudio2Voice* pDestinationVoice, \
_In_ const XAUDIO2_FILTER_PARAMETERS* pParameters, \
UINT32 OperationSet X2DEFAULT(XAUDIO2_COMMIT_NOW)) PURE; \
\
/* NAME: IXAudio2Voice::GetOutputFilterParameters
// DESCRIPTION: Returns the filter parameters from one of this voice's sends.
//
// ARGUMENTS:
// pDestinationVoice - Destination voice of the send whose filter parameters will be read.
// pParameters - Returns the filter parameters.
*/\
STDMETHOD_(void, GetOutputFilterParameters) (THIS_ _In_opt_ IXAudio2Voice* pDestinationVoice, \
_Out_ XAUDIO2_FILTER_PARAMETERS* pParameters) PURE; \
\
/* NAME: IXAudio2Voice::SetVolume
// DESCRIPTION: Sets this voice's overall volume level.
//
// ARGUMENTS:
// Volume - New overall volume level to be used, as an amplitude factor.
// OperationSet - Used to identify this call as part of a deferred batch.
*/\
STDMETHOD(SetVolume) (THIS_ float Volume, \
UINT32 OperationSet X2DEFAULT(XAUDIO2_COMMIT_NOW)) PURE; \
\
/* NAME: IXAudio2Voice::GetVolume
// DESCRIPTION: Obtains this voice's current overall volume level.
//
// ARGUMENTS:
// pVolume: Returns the voice's current overall volume level.
*/\
STDMETHOD_(void, GetVolume) (THIS_ _Out_ float* pVolume) PURE; \
\
/* NAME: IXAudio2Voice::SetChannelVolumes
// DESCRIPTION: Sets this voice's per-channel volume levels.
//
// ARGUMENTS:
// Channels - Used to confirm the voice's channel count.
// pVolumes - Array of per-channel volume levels to be used.
// OperationSet - Used to identify this call as part of a deferred batch.
*/\
STDMETHOD(SetChannelVolumes) (THIS_ UINT32 Channels, _In_reads_(Channels) const float* pVolumes, \
UINT32 OperationSet X2DEFAULT(XAUDIO2_COMMIT_NOW)) PURE; \
\
/* NAME: IXAudio2Voice::GetChannelVolumes
// DESCRIPTION: Returns this voice's current per-channel volume levels.
//
// ARGUMENTS:
// Channels - Used to confirm the voice's channel count.
// pVolumes - Returns an array of the current per-channel volume levels.
*/\
STDMETHOD_(void, GetChannelVolumes) (THIS_ UINT32 Channels, _Out_writes_(Channels) float* pVolumes) PURE; \
\
/* NAME: IXAudio2Voice::SetOutputMatrix
// DESCRIPTION: Sets the volume levels used to mix from each channel of this
// voice's output audio to each channel of a given destination
// voice's input audio.
//
// ARGUMENTS:
// pDestinationVoice - The destination voice whose mix matrix to change.
// SourceChannels - Used to confirm this voice's output channel count
// (the number of channels produced by the last effect in the chain).
// DestinationChannels - Confirms the destination voice's input channels.
// pLevelMatrix - Array of [SourceChannels * DestinationChannels] send
// levels. The level used to send from source channel S to destination
// channel D should be in pLevelMatrix[S + SourceChannels * D].
// OperationSet - Used to identify this call as part of a deferred batch.
*/\
STDMETHOD(SetOutputMatrix) (THIS_ _In_opt_ IXAudio2Voice* pDestinationVoice, \
UINT32 SourceChannels, UINT32 DestinationChannels, \
_In_reads_(SourceChannels * DestinationChannels) const float* pLevelMatrix, \
UINT32 OperationSet X2DEFAULT(XAUDIO2_COMMIT_NOW)) PURE; \
\
/* NAME: IXAudio2Voice::GetOutputMatrix
// DESCRIPTION: Obtains the volume levels used to send each channel of this
// voice's output audio to each channel of a given destination
// voice's input audio.
//
// ARGUMENTS:
// pDestinationVoice - The destination voice whose mix matrix to obtain.
// SourceChannels - Used to confirm this voice's output channel count
// (the number of channels produced by the last effect in the chain).
// DestinationChannels - Confirms the destination voice's input channels.
// pLevelMatrix - Array of send levels, as above.
*/\
STDMETHOD_(void, GetOutputMatrix) (THIS_ _In_opt_ IXAudio2Voice* pDestinationVoice, \
UINT32 SourceChannels, UINT32 DestinationChannels, \
_Out_writes_(SourceChannels * DestinationChannels) float* pLevelMatrix) PURE; \
\
/* NAME: IXAudio2Voice::DestroyVoice
// DESCRIPTION: Destroys this voice, stopping it if necessary and removing
// it from the XAudio2 graph.
*/\
STDMETHOD_(void, DestroyVoice) (THIS) PURE
Declare_IXAudio2Voice_Methods();
};
/**************************************************************************
*
* IXAudio2SourceVoice: Source voice management interface.
*
**************************************************************************/
#undef INTERFACE
#define INTERFACE IXAudio2SourceVoice
DECLARE_INTERFACE_(IXAudio2SourceVoice, IXAudio2Voice)
{
// Methods from IXAudio2Voice base interface
Declare_IXAudio2Voice_Methods();
// NAME: IXAudio2SourceVoice::Start
// DESCRIPTION: Makes this voice start consuming and processing audio.
//
// ARGUMENTS:
// Flags - Flags controlling how the voice should be started.
// OperationSet - Used to identify this call as part of a deferred batch.
//
STDMETHOD(Start) (THIS_ UINT32 Flags X2DEFAULT(0), UINT32 OperationSet X2DEFAULT(XAUDIO2_COMMIT_NOW)) PURE;
// NAME: IXAudio2SourceVoice::Stop
// DESCRIPTION: Makes this voice stop consuming audio.
//
// ARGUMENTS:
// Flags - Flags controlling how the voice should be stopped.
// OperationSet - Used to identify this call as part of a deferred batch.
//
STDMETHOD(Stop) (THIS_ UINT32 Flags X2DEFAULT(0), UINT32 OperationSet X2DEFAULT(XAUDIO2_COMMIT_NOW)) PURE;
// NAME: IXAudio2SourceVoice::SubmitSourceBuffer
// DESCRIPTION: Adds a new audio buffer to this voice's input queue.
//
// ARGUMENTS:
// pBuffer - Pointer to the buffer structure to be queued.
// pBufferWMA - Additional structure used only when submitting XWMA data.
//
STDMETHOD(SubmitSourceBuffer) (THIS_ _In_ const XAUDIO2_BUFFER* pBuffer, _In_opt_ const XAUDIO2_BUFFER_WMA* pBufferWMA X2DEFAULT(NULL)) PURE;
// NAME: IXAudio2SourceVoice::FlushSourceBuffers
// DESCRIPTION: Removes all pending audio buffers from this voice's queue.
//
STDMETHOD(FlushSourceBuffers) (THIS) PURE;
// NAME: IXAudio2SourceVoice::Discontinuity
// DESCRIPTION: Notifies the voice of an intentional break in the stream of
// audio buffers (e.g. the end of a sound), to prevent XAudio2
// from interpreting an empty buffer queue as a glitch.
//
STDMETHOD(Discontinuity) (THIS) PURE;
// NAME: IXAudio2SourceVoice::ExitLoop
// DESCRIPTION: Breaks out of the current loop when its end is reached.
//
// ARGUMENTS:
// OperationSet - Used to identify this call as part of a deferred batch.
//
STDMETHOD(ExitLoop) (THIS_ UINT32 OperationSet X2DEFAULT(XAUDIO2_COMMIT_NOW)) PURE;
// NAME: IXAudio2SourceVoice::GetState
// DESCRIPTION: Returns the number of buffers currently queued on this voice,
// the pContext value associated with the currently processing
// buffer (if any), and other voice state information.
//
// ARGUMENTS:
// pVoiceState - Returns the state information.
// Flags - Flags controlling what voice state is returned.
//
STDMETHOD_(void, GetState) (THIS_ _Out_ XAUDIO2_VOICE_STATE* pVoiceState, UINT32 Flags X2DEFAULT(0)) PURE;
// NAME: IXAudio2SourceVoice::SetFrequencyRatio
// DESCRIPTION: Sets this voice's frequency adjustment, i.e. its pitch.
//
// ARGUMENTS:
// Ratio - Frequency change, expressed as source frequency / target frequency.
// OperationSet - Used to identify this call as part of a deferred batch.
//
STDMETHOD(SetFrequencyRatio) (THIS_ float Ratio,
UINT32 OperationSet X2DEFAULT(XAUDIO2_COMMIT_NOW)) PURE;
// NAME: IXAudio2SourceVoice::GetFrequencyRatio
// DESCRIPTION: Returns this voice's current frequency adjustment ratio.
//
// ARGUMENTS:
// pRatio - Returns the frequency adjustment.
//
STDMETHOD_(void, GetFrequencyRatio) (THIS_ _Out_ float* pRatio) PURE;
// NAME: IXAudio2SourceVoice::SetSourceSampleRate
// DESCRIPTION: Reconfigures this voice to treat its source data as being
// at a different sample rate than the original one specified
// in CreateSourceVoice's pSourceFormat argument.
//
// ARGUMENTS:
// UINT32 - The intended sample rate of further submitted source data.
//
STDMETHOD(SetSourceSampleRate) (THIS_ UINT32 NewSourceSampleRate) PURE;
};
/**************************************************************************
*
* IXAudio2SubmixVoice: Submixing voice management interface.
*
**************************************************************************/
#undef INTERFACE
#define INTERFACE IXAudio2SubmixVoice
DECLARE_INTERFACE_(IXAudio2SubmixVoice, IXAudio2Voice)
{
// Methods from IXAudio2Voice base interface
Declare_IXAudio2Voice_Methods();
// There are currently no methods specific to submix voices.
};
/**************************************************************************
*
* IXAudio2MasteringVoice: Mastering voice management interface.
*
**************************************************************************/
#undef INTERFACE
#define INTERFACE IXAudio2MasteringVoice
DECLARE_INTERFACE_(IXAudio2MasteringVoice, IXAudio2Voice)
{
// Methods from IXAudio2Voice base interface
Declare_IXAudio2Voice_Methods();
// NAME: IXAudio2MasteringVoice::GetChannelMask
// DESCRIPTION: Returns the channel mask for this voice
//
// ARGUMENTS:
// pChannelMask - returns the channel mask for this voice. This corresponds
// to the dwChannelMask member of WAVEFORMATEXTENSIBLE.
//
STDMETHOD(GetChannelMask) (THIS_ _Out_ DWORD* pChannelmask) PURE;
};
/**************************************************************************
*
* IXAudio2EngineCallback: Client notification interface for engine events.
*
* REMARKS: Contains methods to notify the client when certain events happen
* in the XAudio2 engine. This interface should be implemented by
* the client. XAudio2 will call these methods via the interface
* pointer provided by the client when it calls
* IXAudio2::RegisterForCallbacks.
*
**************************************************************************/
#undef INTERFACE
#define INTERFACE IXAudio2EngineCallback
DECLARE_INTERFACE(IXAudio2EngineCallback)
{
// Called by XAudio2 just before an audio processing pass begins.
STDMETHOD_(void, OnProcessingPassStart) (THIS) PURE;
// Called just after an audio processing pass ends.
STDMETHOD_(void, OnProcessingPassEnd) (THIS) PURE;
// Called in the event of a critical system error which requires XAudio2
// to be closed down and restarted. The error code is given in Error.
STDMETHOD_(void, OnCriticalError) (THIS_ HRESULT Error) PURE;
};
/**************************************************************************
*
* IXAudio2VoiceCallback: Client notification interface for voice events.
*
* REMARKS: Contains methods to notify the client when certain events happen
* in an XAudio2 voice. This interface should be implemented by the
* client. XAudio2 will call these methods via an interface pointer
* provided by the client in the IXAudio2::CreateSourceVoice call.
*
**************************************************************************/
#undef INTERFACE
#define INTERFACE IXAudio2VoiceCallback
DECLARE_INTERFACE(IXAudio2VoiceCallback)
{
// Called just before this voice's processing pass begins.
STDMETHOD_(void, OnVoiceProcessingPassStart) (THIS_ UINT32 BytesRequired) PURE;
// Called just after this voice's processing pass ends.
STDMETHOD_(void, OnVoiceProcessingPassEnd) (THIS) PURE;
// Called when this voice has just finished playing a buffer stream
// (as marked with the XAUDIO2_END_OF_STREAM flag on the last buffer).
STDMETHOD_(void, OnStreamEnd) (THIS) PURE;
// Called when this voice is about to start processing a new buffer.
STDMETHOD_(void, OnBufferStart) (THIS_ void* pBufferContext) PURE;
// Called when this voice has just finished processing a buffer.
// The buffer can now be reused or destroyed.
STDMETHOD_(void, OnBufferEnd) (THIS_ void* pBufferContext) PURE;
// Called when this voice has just reached the end position of a loop.
STDMETHOD_(void, OnLoopEnd) (THIS_ void* pBufferContext) PURE;
// Called in the event of a critical error during voice processing,
// such as a failing xAPO or an error from the hardware XMA decoder.
// The voice may have to be destroyed and re-created to recover from
// the error. The callback arguments report which buffer was being
// processed when the error occurred, and its HRESULT code.
STDMETHOD_(void, OnVoiceError) (THIS_ void* pBufferContext, HRESULT Error) PURE;
};
/**************************************************************************
*
* Macros to make it easier to use the XAudio2 COM interfaces in C code.
*
**************************************************************************/
#ifndef __cplusplus
// IXAudio2
#define IXAudio2_QueryInterface(This,riid,ppvInterface) ((This)->lpVtbl->QueryInterface(This,riid,ppvInterface))
#define IXAudio2_AddRef(This) ((This)->lpVtbl->AddRef(This))
#define IXAudio2_Release(This) ((This)->lpVtbl->Release(This))
#define IXAudio2_CreateSourceVoice(This,ppSourceVoice,pSourceFormat,Flags,MaxFrequencyRatio,pCallback,pSendList,pEffectChain) ((This)->lpVtbl->CreateSourceVoice(This,ppSourceVoice,pSourceFormat,Flags,MaxFrequencyRatio,pCallback,pSendList,pEffectChain))
#define IXAudio2_CreateSubmixVoice(This,ppSubmixVoice,InputChannels,InputSampleRate,Flags,ProcessingStage,pSendList,pEffectChain) ((This)->lpVtbl->CreateSubmixVoice(This,ppSubmixVoice,InputChannels,InputSampleRate,Flags,ProcessingStage,pSendList,pEffectChain))
#define IXAudio2_CreateMasteringVoice(This,ppMasteringVoice,InputChannels,InputSampleRate,Flags,DeviceId,pEffectChain,StreamCategory) ((This)->lpVtbl->CreateMasteringVoice(This,ppMasteringVoice,InputChannels,InputSampleRate,Flags,DeviceId,pEffectChain,StreamCategory))
#define IXAudio2_StartEngine(This) ((This)->lpVtbl->StartEngine(This))
#define IXAudio2_StopEngine(This) ((This)->lpVtbl->StopEngine(This))
#define IXAudio2_CommitChanges(This,OperationSet) ((This)->lpVtbl->CommitChanges(This,OperationSet))
#define IXAudio2_GetPerformanceData(This,pPerfData) ((This)->lpVtbl->GetPerformanceData(This,pPerfData))
#define IXAudio2_SetDebugConfiguration(This,pDebugConfiguration,pReserved) ((This)->lpVtbl->SetDebugConfiguration(This,pDebugConfiguration,pReserved))
// IXAudio2Voice
#define IXAudio2Voice_GetVoiceDetails(This,pVoiceDetails) ((This)->lpVtbl->GetVoiceDetails(This,pVoiceDetails))
#define IXAudio2Voice_SetOutputVoices(This,pSendList) ((This)->lpVtbl->SetOutputVoices(This,pSendList))
#define IXAudio2Voice_SetEffectChain(This,pEffectChain) ((This)->lpVtbl->SetEffectChain(This,pEffectChain))
#define IXAudio2Voice_EnableEffect(This,EffectIndex,OperationSet) ((This)->lpVtbl->EnableEffect(This,EffectIndex,OperationSet))
#define IXAudio2Voice_DisableEffect(This,EffectIndex,OperationSet) ((This)->lpVtbl->DisableEffect(This,EffectIndex,OperationSet))
#define IXAudio2Voice_GetEffectState(This,EffectIndex,pEnabled) ((This)->lpVtbl->GetEffectState(This,EffectIndex,pEnabled))
#define IXAudio2Voice_SetEffectParameters(This,EffectIndex,pParameters,ParametersByteSize, OperationSet) ((This)->lpVtbl->SetEffectParameters(This,EffectIndex,pParameters,ParametersByteSize,OperationSet))
#define IXAudio2Voice_GetEffectParameters(This,EffectIndex,pParameters,ParametersByteSize) ((This)->lpVtbl->GetEffectParameters(This,EffectIndex,pParameters,ParametersByteSize))
#define IXAudio2Voice_SetFilterParameters(This,pParameters,OperationSet) ((This)->lpVtbl->SetFilterParameters(This,pParameters,OperationSet))
#define IXAudio2Voice_GetFilterParameters(This,pParameters) ((This)->lpVtbl->GetFilterParameters(This,pParameters))
#define IXAudio2Voice_SetOutputFilterParameters(This,pDestinationVoice,pParameters,OperationSet) ((This)->lpVtbl->SetOutputFilterParameters(This,pDestinationVoice,pParameters,OperationSet))
#define IXAudio2Voice_GetOutputFilterParameters(This,pDestinationVoice,pParameters) ((This)->lpVtbl->GetOutputFilterParameters(This,pDestinationVoice,pParameters))
#define IXAudio2Voice_SetVolume(This,Volume,OperationSet) ((This)->lpVtbl->SetVolume(This,Volume,OperationSet))
#define IXAudio2Voice_GetVolume(This,pVolume) ((This)->lpVtbl->GetVolume(This,pVolume))
#define IXAudio2Voice_SetChannelVolumes(This,Channels,pVolumes,OperationSet) ((This)->lpVtbl->SetChannelVolumes(This,Channels,pVolumes,OperationSet))
#define IXAudio2Voice_GetChannelVolumes(This,Channels,pVolumes) ((This)->lpVtbl->GetChannelVolumes(This,Channels,pVolumes))
#define IXAudio2Voice_SetOutputMatrix(This,pDestinationVoice,SourceChannels,DestinationChannels,pLevelMatrix,OperationSet) ((This)->lpVtbl->SetOutputMatrix(This,pDestinationVoice,SourceChannels,DestinationChannels,pLevelMatrix,OperationSet))
#define IXAudio2Voice_GetOutputMatrix(This,pDestinationVoice,SourceChannels,DestinationChannels,pLevelMatrix) ((This)->lpVtbl->GetOutputMatrix(This,pDestinationVoice,SourceChannels,DestinationChannels,pLevelMatrix))
#define IXAudio2Voice_DestroyVoice(This) ((This)->lpVtbl->DestroyVoice(This))
// IXAudio2SourceVoice
#define IXAudio2SourceVoice_GetVoiceDetails IXAudio2Voice_GetVoiceDetails
#define IXAudio2SourceVoice_SetOutputVoices IXAudio2Voice_SetOutputVoices
#define IXAudio2SourceVoice_SetEffectChain IXAudio2Voice_SetEffectChain
#define IXAudio2SourceVoice_EnableEffect IXAudio2Voice_EnableEffect
#define IXAudio2SourceVoice_DisableEffect IXAudio2Voice_DisableEffect
#define IXAudio2SourceVoice_GetEffectState IXAudio2Voice_GetEffectState
#define IXAudio2SourceVoice_SetEffectParameters IXAudio2Voice_SetEffectParameters
#define IXAudio2SourceVoice_GetEffectParameters IXAudio2Voice_GetEffectParameters
#define IXAudio2SourceVoice_SetFilterParameters IXAudio2Voice_SetFilterParameters
#define IXAudio2SourceVoice_GetFilterParameters IXAudio2Voice_GetFilterParameters
#define IXAudio2SourceVoice_SetOutputFilterParameters IXAudio2Voice_SetOutputFilterParameters
#define IXAudio2SourceVoice_GetOutputFilterParameters IXAudio2Voice_GetOutputFilterParameters
#define IXAudio2SourceVoice_SetVolume IXAudio2Voice_SetVolume
#define IXAudio2SourceVoice_GetVolume IXAudio2Voice_GetVolume
#define IXAudio2SourceVoice_SetChannelVolumes IXAudio2Voice_SetChannelVolumes
#define IXAudio2SourceVoice_GetChannelVolumes IXAudio2Voice_GetChannelVolumes
#define IXAudio2SourceVoice_SetOutputMatrix IXAudio2Voice_SetOutputMatrix
#define IXAudio2SourceVoice_GetOutputMatrix IXAudio2Voice_GetOutputMatrix
#define IXAudio2SourceVoice_DestroyVoice IXAudio2Voice_DestroyVoice
#define IXAudio2SourceVoice_Start(This,Flags,OperationSet) ((This)->lpVtbl->Start(This,Flags,OperationSet))
#define IXAudio2SourceVoice_Stop(This,Flags,OperationSet) ((This)->lpVtbl->Stop(This,Flags,OperationSet))
#define IXAudio2SourceVoice_SubmitSourceBuffer(This,pBuffer,pBufferWMA) ((This)->lpVtbl->SubmitSourceBuffer(This,pBuffer,pBufferWMA))
#define IXAudio2SourceVoice_FlushSourceBuffers(This) ((This)->lpVtbl->FlushSourceBuffers(This))
#define IXAudio2SourceVoice_Discontinuity(This) ((This)->lpVtbl->Discontinuity(This))
#define IXAudio2SourceVoice_ExitLoop(This,OperationSet) ((This)->lpVtbl->ExitLoop(This,OperationSet))
#define IXAudio2SourceVoice_GetState(This,pVoiceState,Flags) ((This)->lpVtbl->GetState(This,pVoiceState,Flags))
#define IXAudio2SourceVoice_SetFrequencyRatio(This,Ratio,OperationSet) ((This)->lpVtbl->SetFrequencyRatio(This,Ratio,OperationSet))
#define IXAudio2SourceVoice_GetFrequencyRatio(This,pRatio) ((This)->lpVtbl->GetFrequencyRatio(This,pRatio))
#define IXAudio2SourceVoice_SetSourceSampleRate(This,NewSourceSampleRate) ((This)->lpVtbl->SetSourceSampleRate(This,NewSourceSampleRate))
// IXAudio2SubmixVoice
#define IXAudio2SubmixVoice_GetVoiceDetails IXAudio2Voice_GetVoiceDetails
#define IXAudio2SubmixVoice_SetOutputVoices IXAudio2Voice_SetOutputVoices
#define IXAudio2SubmixVoice_SetEffectChain IXAudio2Voice_SetEffectChain
#define IXAudio2SubmixVoice_EnableEffect IXAudio2Voice_EnableEffect
#define IXAudio2SubmixVoice_DisableEffect IXAudio2Voice_DisableEffect
#define IXAudio2SubmixVoice_GetEffectState IXAudio2Voice_GetEffectState
#define IXAudio2SubmixVoice_SetEffectParameters IXAudio2Voice_SetEffectParameters
#define IXAudio2SubmixVoice_GetEffectParameters IXAudio2Voice_GetEffectParameters
#define IXAudio2SubmixVoice_SetFilterParameters IXAudio2Voice_SetFilterParameters
#define IXAudio2SubmixVoice_GetFilterParameters IXAudio2Voice_GetFilterParameters
#define IXAudio2SubmixVoice_SetOutputFilterParameters IXAudio2Voice_SetOutputFilterParameters
#define IXAudio2SubmixVoice_GetOutputFilterParameters IXAudio2Voice_GetOutputFilterParameters
#define IXAudio2SubmixVoice_SetVolume IXAudio2Voice_SetVolume
#define IXAudio2SubmixVoice_GetVolume IXAudio2Voice_GetVolume
#define IXAudio2SubmixVoice_SetChannelVolumes IXAudio2Voice_SetChannelVolumes
#define IXAudio2SubmixVoice_GetChannelVolumes IXAudio2Voice_GetChannelVolumes
#define IXAudio2SubmixVoice_SetOutputMatrix IXAudio2Voice_SetOutputMatrix
#define IXAudio2SubmixVoice_GetOutputMatrix IXAudio2Voice_GetOutputMatrix
#define IXAudio2SubmixVoice_DestroyVoice IXAudio2Voice_DestroyVoice
// IXAudio2MasteringVoice
#define IXAudio2MasteringVoice_GetVoiceDetails IXAudio2Voice_GetVoiceDetails
#define IXAudio2MasteringVoice_SetOutputVoices IXAudio2Voice_SetOutputVoices
#define IXAudio2MasteringVoice_SetEffectChain IXAudio2Voice_SetEffectChain
#define IXAudio2MasteringVoice_EnableEffect IXAudio2Voice_EnableEffect
#define IXAudio2MasteringVoice_DisableEffect IXAudio2Voice_DisableEffect
#define IXAudio2MasteringVoice_GetEffectState IXAudio2Voice_GetEffectState
#define IXAudio2MasteringVoice_SetEffectParameters IXAudio2Voice_SetEffectParameters
#define IXAudio2MasteringVoice_GetEffectParameters IXAudio2Voice_GetEffectParameters
#define IXAudio2MasteringVoice_SetFilterParameters IXAudio2Voice_SetFilterParameters
#define IXAudio2MasteringVoice_GetFilterParameters IXAudio2Voice_GetFilterParameters
#define IXAudio2MasteringVoice_SetOutputFilterParameters IXAudio2Voice_SetOutputFilterParameters
#define IXAudio2MasteringVoice_GetOutputFilterParameters IXAudio2Voice_GetOutputFilterParameters
#define IXAudio2MasteringVoice_SetVolume IXAudio2Voice_SetVolume
#define IXAudio2MasteringVoice_GetVolume IXAudio2Voice_GetVolume
#define IXAudio2MasteringVoice_SetChannelVolumes IXAudio2Voice_SetChannelVolumes
#define IXAudio2MasteringVoice_GetChannelVolumes IXAudio2Voice_GetChannelVolumes
#define IXAudio2MasteringVoice_SetOutputMatrix IXAudio2Voice_SetOutputMatrix
#define IXAudio2MasteringVoice_GetOutputMatrix IXAudio2Voice_GetOutputMatrix
#define IXAudio2MasteringVoice_DestroyVoice IXAudio2Voice_DestroyVoice
#define IXAudio2MasteringVoice_GetChannelMask(This,pChannelMask) ((This)->lpVtbl->GetChannelMask(This,pChannelMask))
#endif // #ifndef __cplusplus
/**************************************************************************
*
* Utility functions used to convert from pitch in semitones and volume
* in decibels to the frequency and amplitude ratio units used by XAudio2.
* These are only defined if the client #defines XAUDIO2_HELPER_FUNCTIONS
* prior to #including xaudio2.h.
*
**************************************************************************/
#ifdef XAUDIO2_HELPER_FUNCTIONS
#define _USE_MATH_DEFINES // Make math.h define M_PI
#include <math.h> // For powf, log10f, sinf and asinf
// Calculate the argument to SetVolume from a decibel value
__inline float XAudio2DecibelsToAmplitudeRatio(float Decibels)
{
return powf(10.0f, Decibels / 20.0f);
}
// Recover a volume in decibels from an amplitude factor
__inline float XAudio2AmplitudeRatioToDecibels(float Volume)
{
if (Volume == 0)
{
return -3.402823466e+38f; // Smallest float value (-FLT_MAX)
}
return 20.0f * log10f(Volume);
}
// Calculate the argument to SetFrequencyRatio from a semitone value
__inline float XAudio2SemitonesToFrequencyRatio(float Semitones)
{
// FrequencyRatio = 2 ^ Octaves
// = 2 ^ (Semitones / 12)
return powf(2.0f, Semitones / 12.0f);
}
// Recover a pitch in semitones from a frequency ratio
__inline float XAudio2FrequencyRatioToSemitones(float FrequencyRatio)
{
// Semitones = 12 * log2(FrequencyRatio)
// = 12 * log2(10) * log10(FrequencyRatio)
return 39.86313713864835f * log10f(FrequencyRatio);
}
// Convert from filter cutoff frequencies expressed in Hertz to the radian
// frequency values used in XAUDIO2_FILTER_PARAMETERS.Frequency, state-variable
// filter types only. Use XAudio2CutoffFrequencyToOnePoleCoefficient() for one-pole filter types.
// Note that the highest CutoffFrequency supported is SampleRate/6.
// Higher values of CutoffFrequency will return XAUDIO2_MAX_FILTER_FREQUENCY.
__inline float XAudio2CutoffFrequencyToRadians(float CutoffFrequency, UINT32 SampleRate)
{
if ((UINT32)(CutoffFrequency * 6.0f) >= SampleRate)
{
return XAUDIO2_MAX_FILTER_FREQUENCY;
}
return 2.0f * sinf((float)M_PI * CutoffFrequency / SampleRate);
}
// Convert from radian frequencies back to absolute frequencies in Hertz
__inline float XAudio2RadiansToCutoffFrequency(float Radians, float SampleRate)
{
return SampleRate * asinf(Radians / 2.0f) / (float)M_PI;
}
// Convert from filter cutoff frequencies expressed in Hertz to the filter
// coefficients used with XAUDIO2_FILTER_PARAMETERS.Frequency,
// LowPassOnePoleFilter and HighPassOnePoleFilter filter types only.
// Use XAudio2CutoffFrequencyToRadians() for state-variable filter types.
__inline float XAudio2CutoffFrequencyToOnePoleCoefficient(float CutoffFrequency, UINT32 SampleRate)
{
if ((UINT32)CutoffFrequency >= SampleRate)
{
return XAUDIO2_MAX_FILTER_FREQUENCY;
}
return ( 1.0f - powf(1.0f - 2.0f * CutoffFrequency / SampleRate, 2.0f) );
}
#endif // #ifdef XAUDIO2_HELPER_FUNCTIONS
/**************************************************************************
*
* XAudio2Create: Top-level function that creates an XAudio2 instance.
*
* ARGUMENTS:
*
* Flags - Flags specifying the XAudio2 object's behavior.
*
* XAudio2Processor - An XAUDIO2_PROCESSOR value that specifies the
* hardware threads (Xbox) or processors (Windows) that XAudio2
* will use. Note that XAudio2 supports concurrent processing on
* multiple threads, using any combination of XAUDIO2_PROCESSOR
* flags. The values are platform-specific; platform-independent
* code can use XAUDIO2_DEFAULT_PROCESSOR to use the default on
* each platform.
*
**************************************************************************/
typedef HRESULT(*XAudio2Create)(_Outptr_ IXAudio2** ppXAudio2, UINT32 Flags, XAUDIO2_PROCESSOR XAudio2Processor);
// Undo the #pragma pack(push, 1) directive at the top of this file
#pragma pack(pop)
#endif // #ifndef GUID_DEFS_ONLY
#endif // #ifndef __XAUDIO2_INCLUDED__