_ak_spatial_audio_8h

Wwise SDK 2025.1.0

 /*******************************************************************************
 The content of this file includes portions of the AUDIOKINETIC Wwise Technology
 released in source code form as part of the SDK installer package.
  
 Commercial License Usage
  
 Licensees holding valid commercial licenses to the AUDIOKINETIC Wwise Technology
 may use this file in accordance with the end user license agreement provided
 with the software or, alternatively, in accordance with the terms contained in a
 written agreement between you and Audiokinetic Inc.
  
 Apache License Usage
  
 Alternatively, this file may be used under the Apache License, Version 2.0 (the
 "Apache License"); you may not use this file except in compliance with the
 Apache License. You may obtain a copy of the Apache License at
 http://www.apache.org/licenses/LICENSE-2.0.
  
 Unless required by applicable law or agreed to in writing, software distributed
 under the Apache License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
 OR CONDITIONS OF ANY KIND, either express or implied. See the Apache License for
 the specific language governing permissions and limitations under the License.
  
   Copyright (c) 2025 Audiokinetic Inc.
 *******************************************************************************/
  
 /// \file 
 /// Spatial Audio interface.
  
 #pragma once
  
 #include <AK/SpatialAudio/Common/AkSpatialAudioTypes.h>
 #include <AK/Plugin/AkReflectGameData.h>
 #include <AK/SoundEngine/Common/AkSoundEngine.h>
  
 /// Audiokinetic namespace
 namespace AK
 {
     /// Audiokinetic spatial audio namespace
     namespace SpatialAudio
     {
         ////////////////////////////////////////////////////////////////////////
         /// @name Basic functions. 
         /// In order to use SpatialAudio, you need to initialize it using Init, and register the listeners that you plan on using with any of the services offered by SpatialAudio, using 
         /// RegisterListener respectively, _after_ having registered their corresponding game object to the sound engine.
         /// \akwarning At the moment, there can be only one Spatial Audio listener registered at any given time.
         //@{
  
         /// Initialize the SpatialAudio API.  
         AK_EXTERNAPIFUNC(AKRESULT, Init)(const AkSpatialAudioInitSettings& in_initSettings);
  
         /// Assign a game object as the Spatial Audio listener.  There can be only one Spatial Audio listener registered at any given time; in_gameObjectID will replace any previously set Spatial Audio listener.
         /// The game object passed in must be registered by the client, at some point, for sound to be heard.  It is not necessary to be registered at the time of calling this function.
         /// If no listener is explicitly registered to spatial audio, then a default listener (set via \c AK::SoundEngine::SetDefaultListeners()) is selected.  If there are no default listeners, or there are more than one
         /// default listeners, then it is necessary to call RegisterListener() to specify which listener to use with Spatial Audio.
         AK_EXTERNAPIFUNC(AKRESULT, RegisterListener)(
             AkGameObjectID in_gameObjectID              ///< Game object ID
             );
  
         /// Unregister a game object as a listener in the SpatialAudio API; clean up Spatial Audio listener data associated with in_gameObjectID.  
         /// If in_gameObjectID is the current registered listener, calling this function will clear the Spatial Audio listener and
         /// Spatial Audio features will be disabled until another listener is registered.
         /// This function is optional - listener are automatically unregistered when their game object is deleted in the sound engine.
         /// \sa 
         /// - \ref AK::SpatialAudio::RegisterListener
         AK_EXTERNAPIFUNC(AKRESULT, UnregisterListener)(
             AkGameObjectID in_gameObjectID              ///< Game object ID
             );
  
         /// Define an inner and outer radius around each sound position for a specified game object.
         /// If the radii are set to 0, the game object is a point source. Non-zero radii create a Radial Emitter.
         /// The radii are used in spread and distance calculations that simulates sound emitting from a spherical volume of space.
         /// When applying attenuation curves, the distance between the listener and the inner sphere (defined by the sound position and \c in_innerRadius) is used. 
         /// The spread for each sound position is calculated as follows:
         /// - If the listener is outside the outer radius, the spread is defined by the area that the sphere occupies in the listener field of view. Specifically, this angle is calculated as 2.0*asinf( \c in_outerRadius / distance ), where distance is the distance between the listener and the sound position.
         /// - When the listener intersects the outer radius (the listener is exactly \c in_outerRadius units away from the sound position), the spread is exactly 50%.
         /// - When the listener is between the inner and outer radii, the spread interpolates linearly from 50% to 100% as the listener transitions from the outer radius towards the inner radius.
         /// - If the listener is inside the inner radius, the spread is 100%.
         /// \aknote Transmission and diffraction calculations in Spatial Audio always use the center of the sphere (the position(s) passed into \c AK::SoundEngine::SetPosition or \c AK::SoundEngine::SetMultiplePositions) for raycasting. 
         /// To obtain accurate diffraction and transmission calculations for radial sources, where different parts of the volume may take different paths through or around geometry,
         /// it is necessary to pass multiple sound positions into \c AK::SoundEngine::SetMultiplePositions to allow the engine to 'sample' the area at different points.
         /// - \ref AK::SoundEngine::SetPosition
         /// - \ref AK::SoundEngine::SetMultiplePositions
         AK_EXTERNAPIFUNC(AKRESULT, SetGameObjectRadius)(
             AkGameObjectID in_gameObjectID,             ///< Game object ID
             AkReal32 in_outerRadius,                    ///< Outer radius around each sound position, defining 50% spread. Must satisfy \c in_innerRadius <= \c in outerRadius.
             AkReal32 in_innerRadius                     ///< Inner radius around each sound position, defining 100% spread and 0 attenuation distance. Must satisfy \c in_innerRadius <= \c in outerRadius.
             );
  
         //@}
  
         ////////////////////////////////////////////////////////////////////////
         /// @name Helper functions for passing game data to the Reflect plug-in. 
         /// Use this API for detailed placement of reflection image sources.
         /// \aknote These functions are low-level and useful when your game engine already implements a geometrical approach to sound propagation such as an image-source or a ray tracing algorithm.
         /// Functions of Geometry are preferred and easier to use with the Reflect plug-in. \endaknote
         //@{
  
         /// Add or update an individual image source for processing via the AkReflect plug-in.  Use this API for detailed placement of
         /// reflection image sources, whose positions have been determined by the client, such as from the results of a ray cast, computation or by manual placement.  One possible
         /// use case is generating reflections that originate far enough away that they can be modeled as a static point source, for example, off of a distant mountain.
         /// The SpatialAudio API manages image sources added via SetImageSource() and sends them to the AkReflect plug-in that is on the aux bus with ID \c in_AuxBusID. 
         /// The image source applies all game objects that have a reflections aux send defined in the authoring tool, or only to a specific game object if \c in_gameObjectID is used.
         /// \aknote The \c AkImageSourceSettings struct passed in \c in_info must contain a unique image source ID to be able to identify this image source across frames and when updating and/or removing it later.  
         /// Each instance of AkReflect has its own set of data, so you may reuse ID, if desired, as long as \c in_gameObjectID and \c in_AuxBusID are different.
         /// \aknote It is possible for the AkReflect plugin to process reflections from both \c SetImageSource and the geometric reflections API on the same aux bus and game object, but be aware that image source ID collisions are possible.
         /// The image source IDs used by the geometric reflections API are generated from hashed data that uniquely identifies the reflecting surfaces. If a collision occurs, one of the reflections will not be heard.
         /// While collision are rare, to ensure that it never occurs use an aux bus for \c SetImageSource that is unique from the aux bus(es) defined in the authoring tool, and from those passed to \c SetEarlyReflectionsAuxSend.
         /// \endaknote
         /// \aknote For proper operation with AkReflect and the SpatialAudio API, any aux bus using AkReflect should have 'Listener Relative Routing' checked and the 3D Spatialization set to None in the Wwise authoring tool. See \ref spatial_audio_wwiseprojectsetup_businstances for more details. \endaknote
         /// \sa 
         /// - \ref AK::SpatialAudio::RemoveImageSource
         /// - \ref AK::SpatialAudio::ClearImageSources
         /// - \ref AK::SpatialAudio::SetGameObjectInRoom
         /// - \ref AK::SpatialAudio::SetEarlyReflectionsAuxSend
         AK_EXTERNAPIFUNC(AKRESULT, SetImageSource)(
             AkImageSourceID in_srcID,                               ///< The ID of the image source being added.
             const AkImageSourceSettings& in_info,                   ///< Image source information.
             const char* in_name,                                    ///< Name given to image source, can be used to identify the image source in the AK Reflect plugin UI.
             AkUniqueID in_AuxBusID = AK_INVALID_AUX_ID,             ///< Aux bus that has the AkReflect plug in for early reflection DSP. 
                                                                     ///< Pass AK_INVALID_AUX_ID to use the reflections aux bus defined in the authoring tool.
             AkGameObjectID in_gameObjectID = AK_INVALID_GAME_OBJECT ///< The ID of the emitter game object to which the image source applies. 
                                                                     ///< Pass AK_INVALID_GAME_OBJECT to apply to all game objects that have a reflections aux bus assigned in the authoring tool.
             );
  
         /// Remove an individual reflection image source that was previously added via \c SetImageSource.
         /// \sa 
         /// - \ref AK::SpatialAudio::SetImageSource
         /// - \ref AK::SpatialAudio::ClearImageSources
         AK_EXTERNAPIFUNC(AKRESULT, RemoveImageSource)(
             AkImageSourceID in_srcID,                                   ///< The ID of the image source to remove.
             AkUniqueID in_AuxBusID = AK_INVALID_AUX_ID,                 ///< Aux bus that was passed to SetImageSource.
             AkGameObjectID in_gameObjectID = AK_INVALID_GAME_OBJECT     ///< Game object ID that was passed to SetImageSource.
             );
  
         /// Remove all image sources matching \c in_AuxBusID and \c in_gameObjectID that were previously added via \c SetImageSource.
         /// Both \c in_AuxBusID and \c in_gameObjectID can be treated as wild cards matching all aux buses and/or all game object, by passing \c AK_INVALID_AUX_ID and/or \c AK_INVALID_GAME_OBJECT, respectively.
         /// \sa 
         /// - \ref AK::SpatialAudio::SetImageSource
         /// - \ref AK::SpatialAudio::RemoveImageSource
         AK_EXTERNAPIFUNC(AKRESULT, ClearImageSources)(
             AkUniqueID in_AuxBusID = AK_INVALID_AUX_ID,                         ///< Aux bus that was passed to SetImageSource, or AK_INVALID_AUX_ID to match all aux buses.
             AkGameObjectID in_gameObjectID = AK_INVALID_GAME_OBJECT             ///< Game object ID that was passed to SetImageSource, or AK_INVALID_GAME_OBJECT to match all game objects.
             );
  
         //@}
  
         ////////////////////////////////////////////////////////////////////////
         /// @name Geometry 
         /// Geometry API for early reflection processing using Reflect.
         //@{
  
         /// Add or update a set of geometry from the \c SpatialAudio module for geometric reflection and diffraction processing. A geometry set is a logical set of vertices, triangles, and acoustic surfaces,
         /// which are referenced by the same \c AkGeometrySetID. The ID (\c in_GeomSetID) must be unique and is also chosen by the client in a manner similar to \c AkGameObjectID's.
         /// It is necessary to create at least one geometry instance for each geometry set that is to be used for diffraction and reflection simulation.
         /// \sa 
         /// - \ref AkGeometryParams
         /// - \ref AK::SpatialAudio::SetGeometryInstance
         /// - \ref AK::SpatialAudio::RemoveGeometry
         AK_EXTERNAPIFUNC(AKRESULT, SetGeometry)(
             AkGeometrySetID in_GeomSetID,       ///< Unique geometry set ID, chosen by client.
             const AkGeometryParams& in_params   ///< Geometry parameters to set.
             );
  
         /// Remove a set of geometry to the SpatialAudio API.
         /// Calling \c AK::SpatialAudio::RemoveGeometry will remove all instances of the geometry from the scene.
         /// \sa 
         /// - \ref AK::SpatialAudio::SetGeometry
         AK_EXTERNAPIFUNC(AKRESULT, RemoveGeometry)(
             AkGeometrySetID in_SetID        ///< ID of geometry set to be removed.
             );
  
         /// Add or update a geometry instance from the \c SpatialAudio module for geometric reflection and diffraction processing. 
         /// A geometry instance is a unique instance of a geometry set with a specified transform (position, rotation and scale). 
         /// It is necessary to create at least one geometry instance for each geometry set that is to be used for diffraction and reflection simulation.
         /// The ID (\c in_GeomSetInstanceID) must be unique amongst all geometry instances, including geometry instances referencing different geometry sets. The ID is chosen by the client in a manner similar to \c AkGameObjectID's.
         /// To update the transform of an existing geometry instance, call SetGeometryInstance again, passing the same \c AkGeometryInstanceID, with the updated transform. 
         /// \sa 
         /// - \ref AkGeometryInstanceParams
         /// - \ref AK::SpatialAudio::RemoveGeometryInstance
         AK_EXTERNAPIFUNC(AKRESULT, SetGeometryInstance)(
             AkGeometryInstanceID in_GeometryInstanceID, ///< Unique geometry set instance ID, chosen by client.
             const AkGeometryInstanceParams& in_params   ///< Geometry instance parameters to set.
             );
  
         /// Remove a geometry instance from the SpatialAudio API.
         /// \sa 
         /// - \ref AK::SpatialAudio::SetGeometryInstance
         AK_EXTERNAPIFUNC(AKRESULT, RemoveGeometryInstance)(
             AkGeometryInstanceID in_GeometryInstanceID  ///< ID of geometry set instance to be removed.
             );
  
         /// Query information about the reflection paths that have been calculated via geometric reflection processing in the SpatialAudio API. This function can be used for debugging purposes.
         /// This function must acquire the global sound engine lock and therefore, may block waiting for the lock.
         /// \sa
         /// - \ref AkReflectionPathInfo
         AK_EXTERNAPIFUNC(AKRESULT, QueryReflectionPaths)(
             AkGameObjectID in_gameObjectID, ///< The ID of the game object that the client wishes to query.
             AkUInt32 in_positionIndex,      ///< The index of the associated game object position.
             AkVector64& out_listenerPos,        ///< Returns the position of the listener game object that is associated with the game object \c in_gameObjectID.
             AkVector64& out_emitterPos,     ///< Returns the position of the emitter game object \c in_gameObjectID.
             AkReflectionPathInfo* out_aPaths,   ///< Pointer to an array of \c AkReflectionPathInfo's which will be filled after returning.
             AkUInt32& io_uArraySize         ///< The number of slots in \c out_aPaths, after returning the number of valid elements written.
             );
  
         //@}
  
         ////////////////////////////////////////////////////////////////////////
         /// @name Rooms and Portals
         /// Sound Propagation API using rooms and portals.
         //@{
  
         /// Add or update a room. Rooms are used to connect portals and define an orientation for oriented reverbs. This function may be called multiple times with the same ID to update the parameters of the room.
         /// \akwarning The ID (\c in_RoomID) must be chosen in the same manner as \c AkGameObjectID's, as they are in the same ID-space. The spatial audio lib manages the 
         /// registration/unregistration of internal game objects for rooms that use these IDs and, therefore, must not collide. 
         /// Also, the room ID must not be in the reserved range (AkUInt64)(-32) to (AkUInt64)(-2) inclusively. You may, however, explicitly add the default room ID AK::SpatialAudio::kOutdoorRoomID (-1) 
         /// in order to customize its AkRoomParams, to provide a valid auxiliary bus, for example.\endakwarning
         /// \sa
         /// - \ref AkRoomID
         /// - \ref AkRoomParams
         /// - \ref AK::SpatialAudio::RemoveRoom
         AK_EXTERNAPIFUNC(AKRESULT, SetRoom)(
             AkRoomID in_RoomID,             ///< Unique room ID, chosen by the client.
             const AkRoomParams& in_Params,  ///< Parameter for the room.
             const char* in_RoomName = nullptr   ///< Name used to identify room (optional)
             );
  
         /// Remove a room.
         /// \sa
         /// - \ref AkRoomID
         /// - \ref AK::SpatialAudio::SetRoom
         AK_EXTERNAPIFUNC(AKRESULT, RemoveRoom)(
             AkRoomID in_RoomID  ///< Room ID that was passed to \c SetRoom.
             );
  
         /// Add or update an acoustic portal. A portal is an opening that connects two or more rooms to simulate the transmission of reverberated (indirect) sound between the rooms. 
         /// This function may be called multiple times with the same ID to update the parameters of the portal. The ID (\c in_PortalID) must be chosen in the same manner as \c AkGameObjectID's, 
         /// as they are in the same ID-space. The spatial audio lib manages the registration/unregistration of internal game objects for portals that use these IDs, and therefore must not collide.
         /// \sa
         /// - \ref AkPortalID
         /// - \ref AkPortalParams
         /// - \ref AK::SpatialAudio::RemovePortal
         AK_EXTERNAPIFUNC(AKRESULT, SetPortal)(
             AkPortalID in_PortalID,     ///< Unique portal ID, chosen by the client.
             const AkPortalParams& in_Params,    ///< Parameter for the portal.
             const char* in_PortalName = nullptr   ///< Name used to identify portal (optional)
             );
  
         /// Remove a portal.
         /// \sa
         /// - \ref AkPortalID
         /// - \ref AK::SpatialAudio::SetPortal
         AK_EXTERNAPIFUNC(AKRESULT, RemovePortal)(
             AkPortalID in_PortalID      ///< ID of portal to be removed, which was originally passed to SetPortal.
             );
  
         /// Use a Room as a Reverb Zone.
         /// AK::SpatialAudio::SetReverbZone establishes a parent-child relationship between two Rooms and allows for sound propagation between them
         /// as if they were the same Room, without the need for a connecting Portal. Setting a Room as a Reverb Zone 
         /// is useful in situations where two or more acoustic environments are not easily modeled as closed rooms connected by portals.
         /// Possible uses for Reverb Zones include: a covered area with no walls, a forested area within an outdoor space, or any situation 
         /// where multiple reverb effects are desired within a common space. Reverb Zones have many advantages compared to standard Game-Defined
         /// Auxiliary Sends. They are part of the wet path, and form reverb chains with other Rooms; they are spatialized according to their 3D extent;  
         /// they are also subject to other acoustic phenomena simulated in Wwise Spatial Audio, such as diffraction and transmission.
         /// A parent Room may have multiple Reverb Zones, but a Reverb Zone can only have a single Parent. If a Room is already assigned 
         /// to a parent Room, it will first be removed from the old parent (exactly as if AK::SpatialAudio::RemoveReverbZone were called) 
         /// before then being assigned to the new parent Room. A Room can not be its own parent.
         /// The Reverb Zone and its parent are both Rooms, and as such, must be specified using AK::SpatialAudio::SetRoom.
         /// If AK::SpatialAudio::SetReverbZone is called before AK::SpatialAudio::SetRoom, and either of the two rooms do not yet exist,
         /// placeholder Rooms with default parameters are created. They should be subsequently parameteized with AK::SpatialAudio::SetRoom.
         /// 
         /// To set which Reverb Zone a Game Object is in, use the AK::SpatialAudio::SetGameObjectInRoom API, and pass the Reverb Zone's Room ID. 
         /// In Wwise Spatial Audio, a Game Object can only ever be inside a single room, and Reverb Zones are no different in this regard.
         /// \aknote
         /// The automatically created 'outdoors' Room is commonly used as a parent Room for Reverb Zones, since they often model open spaces. 
         /// To attach a Reverb zone to outdoors, pass AK::SpatialAudio::kOutdoorRoomID as the \c in_ParentRoom argument. Like all Rooms, the 'outdoors' Room
         /// can be parameterized (for example, to assign a reverb bus) by passing AK::SpatialAudio::kOutdoorRoomID to AK::SpatialAudio::SetRoom.
         /// \sa 
         /// - \ref AkRoomID
         /// - \ref AK::SpatialAudio::SetRoom
         /// - \ref AK::SpatialAudio::RemoveRoom
         /// - \ref AK::SpatialAudio::RemoveReverbZone
         /// - \ref AK::SpatialAudio::kOutdoorRoomID
         AK_EXTERNAPIFUNC(AKRESULT, SetReverbZone)(
             AkRoomID in_ReverbZone,  ///< ID of the Room which will be specified as a Reverb Zone. 
             AkRoomID in_ParentRoom, ///< ID of the parent Room.
             AkReal32 in_transitionRegionWidth ///< Width of the transition region between the Reverb Zone and its parent. The transition region is centered around the Reverb Zone geometry. It only applies where triangle transmission loss is set to 0.
             );
  
         /// Remove a Reverb Zone from its parent. 
         /// It will no longer be possible for sound to propagate between the two rooms, unless they are explicitly connected with a Portal.
         /// \sa 
         /// - \ref AK::SpatialAudio::SetReverbZone
         /// - \ref AK::SpatialAudio::RemoveRoom
         /// - \ref AK::SpatialAudio::RemoveReverbZone
         AK_EXTERNAPIFUNC(AKRESULT, RemoveReverbZone)(
             AkRoomID in_ReverbZone ///< ID of the Room which has been specified as a Reverb Zone. 
             );
  
         /// Set the room that the game object is currently located in - usually the result of a containment test performed by the client. The room must have been registered with \c SetRoom.
         /// Setting the room for a game object provides the basis for the sound propagation service, and also sets which room's reverb aux bus to send to.  The sound propagation service traces the path
         /// of the sound from the emitter to the listener, and calculates the diffraction as the sound passes through each portal.  The portals are used to define the spatial location of the diffracted and reverberated
         /// audio.
         /// \sa 
         /// - \ref AK::SpatialAudio::SetRoom
         /// - \ref AK::SpatialAudio::RemoveRoom
         AK_EXTERNAPIFUNC(AKRESULT, SetGameObjectInRoom)(
             AkGameObjectID in_gameObjectID, ///< Game object ID 
             AkRoomID in_CurrentRoomID       ///< RoomID that was passed to \c AK::SpatialAudio::SetRoom
             );
  
         /// Unset the room that the game object is currently located in.
         /// When a game object has not been explicitly assigned to a room with \ref AK::SpatialAudio::SetGameObjectInRoom, the room is automatically computed.
         /// \sa 
         /// - \ref AK::SpatialAudio::SetRoom
         /// - \ref AK::SpatialAudio::RemoveRoom
         AK_EXTERNAPIFUNC(AKRESULT, UnsetGameObjectInRoom)(
             AkGameObjectID in_gameObjectID ///< Game object ID
             );
  
         /// Set a global scaling factor that manipulates reverb send values. AK::SpatialAudio::SetAdjacentRoomBleed affects the proportion of audio sent to adjacent rooms 
         /// versus the proportion sent to the emitter's current room. It updates the initialization setting specified in AkSpatialAudioInitSettings::fAdjacentRoomBleed.
         /// This value is multiplied by AkPortalParams::AdjacentRoomBleed, which is used to scale reverb bleed for individual portals.
         /// When calculating reverb send amounts, each portal's aperture is multiplied by fAdjacentRoomBleed, altering its perceived size:
         /// - 1.0 (default): Maintain portals at its true geometric size (no scaling).
         /// - > 1.0: Increases the perceived size of all portals, allowing more bleed into adjacent rooms.
         /// - < 1.0: Decreases the perceived size of all portals, reducing bleed into adjacent rooms.
         /// Valid range: (0.0 - infinity)
         /// Note: Values approaching 0 may result in abrupt portal transitions.
         AK_EXTERNAPIFUNC(AKRESULT, SetAdjacentRoomBleed)(
             AkReal32 in_fAdjacentRoomBleed
             );
  
         /// Set the early reflections order for reflection calculation. The reflections order indicates the number of times sound can bounce off of a surface. 
         /// A higher number requires more CPU resources but results in denser early reflections. Set to 0 to globally disable reflections processing.
         AK_EXTERNAPIFUNC(AKRESULT, SetReflectionsOrder)(
             AkUInt32 in_uReflectionsOrder,  ///< Number of reflections to calculate. Valid range [0,4]
             bool in_bUpdatePaths            ///< Set to true to clear existing higher-order paths and to force the re-computation of new paths. If false, existing paths will remain and new paths will be computed when the emitter or listener moves.
             );
  
         /// Set the diffraction order for geometric path calculation. The diffraction order indicates the number of edges a sound can diffract around. 
         /// A higher number requires more CPU resources but results in paths found around more complex geometry. Set to 0 to globally disable geometric diffraction processing.
         /// \sa
         /// - \ref AkSpatialAudioInitSettings::uMaxDiffractionOrder
         AK_EXTERNAPIFUNC(AKRESULT, SetDiffractionOrder)(
             AkUInt32 in_uDiffractionOrder,  ///< Number of diffraction edges to consider in path calculations. Valid range [0,8]
             bool in_bUpdatePaths            ///< Set to true to clear existing diffraction paths and to force the re-computation of new paths. If false, existing paths will remain and new paths will be computed when the emitter or listener moves.
             );
  
         /// Set the maximum number of computed reflection paths
         ///
         AK_EXTERNAPIFUNC(AKRESULT, SetMaxGlobalReflectionPaths)(
             AkUInt32 in_uMaxGlobalReflectionPaths   ///< Maximum number of reflection paths. Valid range [0..[
             );
  
         /// Set the maximum number of computed diffraction paths. 
         /// Pass a valid Game Object ID to to \c in_gameObjectID to affect a specific game object and override the value set in AkSpatialAudioInitSettings::uMaxDiffractionPaths. 
         /// Pass \c AK_INVALID_GAME_OBJECT to apply the same limit to all Game Objects (that have not previously been passed to SetMaxDiffractionPaths), 
         /// updating the value set for AkSpatialAudioInitSettings::uMaxDiffractionPaths.
         ///
         /// \sa
         /// - \ref AkSpatialAudioInitSettings::uMaxDiffractionPaths
         AK_EXTERNAPIFUNC(AKRESULT, SetMaxDiffractionPaths)(
             AkUInt32 in_uMaxDiffractionPaths,                       ///< Maximum number of reflection paths. Valid range [0..32]
             AkGameObjectID in_gameObjectID = AK_INVALID_GAME_OBJECT ///< Game Object ID. Pass AK_INVALID_GAME_OBJECT to affect all Game Objects, effectivly updating AkSpatialAudioInitSettings::uMaxDiffractionPaths. Pass a valid Game Object ID to override the init setting for a specific Game Object.
             );
  
         /// Set the maximum number of game-defined auxiliary sends that can originate from a single emitter. 
         /// Set to 1 to only allow emitters to send directly to their current room. Set to 0 to disable the limit.
         /// \sa
         /// - \ref AkSpatialAudioInitSettings::uMaxEmitterRoomAuxSends
         AK_EXTERNAPIFUNC(AKRESULT, SetMaxEmitterRoomAuxSends)(
             AkUInt32 in_uMaxEmitterRoomAuxSends ///< The maximum number of room aux send connections.
             );
  
         /// Set the number of rays cast from the listener by the stochastic ray casting engine.
         /// A higher number requires more CPU resources but provides more accurate results. Default value (35) should be good for most applications.
         ///
         AK_EXTERNAPIFUNC(AKRESULT, SetNumberOfPrimaryRays)(
             AkUInt32 in_uNbPrimaryRays      ///< Number of rays cast from the listener
             );
  
         /// Set the number of frames on which the path validation phase will be spread. Value between [1..[
         /// High values delay the validation of paths. A value of 1 indicates no spread at all.
         ///
         AK_EXTERNAPIFUNC(AKRESULT, SetLoadBalancingSpread)(
             AkUInt32 in_uNbFrames       ///< Number of spread frames
             );
  
         /// [\ref spatial_audio_experimental "Experimental"]  Enable parameter smoothing on the diffraction paths output from the Acoustics Engine, either globally or for a specific game object. Set fSmoothingConstantMs to a value greater than 0 to define the time constant (in milliseconds) for parameter smoothing. 
         /// \sa
         /// - \ref AkSpatialAudioInitSettings::fSmoothingConstantMs
         AK_EXTERNAPIFUNC(AKRESULT, SetSmoothingConstant)(
             AkReal32 in_fSmoothingConstantMs,                               ///< Smoothing constant (ms)
             AkGameObjectID in_gameObjectID = AK_INVALID_GAME_OBJECT         ///< Game Object ID. Pass AK_INVALID_GAME_OBJECT to set the global smoothing constant, affecting all Spatial Audio Emitters and Rooms.
             );
  
         /// Set an early reflections auxiliary bus for a particular game object. 
         /// Geometrical reflection calculation inside spatial audio is enabled for a game object if any sound playing on the game object has a valid early reflections aux bus specified in the authoring tool,
         /// or if an aux bus is specified via \c SetEarlyReflectionsAuxSend.
         /// The \c in_auxBusID parameter of SetEarlyReflectionsAuxSend applies to sounds playing on the game object \c in_gameObjectID which have not specified an early reflection bus in the authoring tool -
         /// the parameter specified on individual sounds' reflection bus takes priority over the value passed in to \c SetEarlyReflectionsAuxSend.
         /// \aknote 
         /// Users may apply this function to avoid duplicating sounds in the Containers hierarchy solely for the sake of specifying a unique early reflection bus, or in any situation where the same 
         /// sound should be played on different game objects with different early reflection aux buses (the early reflection bus must be left blank in the authoring tool if the user intends to specify it through the API). \endaknote
         AK_EXTERNAPIFUNC(AKRESULT, SetEarlyReflectionsAuxSend)(
             AkGameObjectID in_gameObjectID, ///< Game object ID 
             AkAuxBusID in_auxBusID          ///< Auxiliary bus ID. Applies only to sounds which have not specified an early reflection bus in the authoring tool. Pass \c AK_INVALID_AUX_ID to set only the send volume.
             );
  
         /// Set an early reflections send volume for a particular game object. 
         /// The \c in_fSendVolume parameter is used to control the volume of the early reflections send. It is combined with the early reflections volume specified in the authoring tool, and is applied to all sounds 
         /// playing on the game object.
         /// Setting \c in_fSendVolume to 0.f will disable all reflection processing for this game object.
         AK_EXTERNAPIFUNC(AKRESULT, SetEarlyReflectionsVolume)(
             AkGameObjectID in_gameObjectID, ///< Game object ID 
             AkReal32 in_fSendVolume         ///< Send volume (linear) for auxiliary send. Set 0.f to disable reflection processing. Valid range 0.f-1.f. 
             );
  
         /// Set the obstruction and occlusion value for a portal that has been registered with Spatial Audio.
         /// Portal obstruction simulates objects that block the direct sound path between the portal and the listener, but
         /// allows indirect sound to pass around the obstacle. For example, use portal obstruction 
         /// when a piece of furniture blocks the line of sight of the portal opening.
         /// Portal obstruction is applied to the connection between the emitter and the listener, and only affects the dry signal path.
         /// Portal occlusion simulates a complete blockage of both the direct and indirect sound through a portal. For example, use portal occlusion for 
         /// opening or closing a door or window.
         /// Portal occlusion is applied to the connection between the emitter and the first room in the chain, as well as the connection between the emitter and listener.
         /// Portal occlusion affects both the dry and wet (reverberant) signal paths.
         /// If you are using built-in game parameters to drive RTPCs, the obstruction and occlusion values set here 
         /// do not affect the RTPC values. This behavior is intentional and occurs because RTPCs only provide one 
         /// value per game object, but a single game object can have multiple paths through different Portals, 
         /// each with different obstruction and occlusion values.
         /// To apply detailed obstruction to specific sound paths but not others, use \c AK::SpatialAudio::SetGameObjectToPortalObstruction and \c AK::SpatialAudio::SetPortalToPortalObstruction.
         /// To apply occlusion and obstruction to the direct line of sight between the emitter and listener use \c AK::SoundEngine::SetObjectObstructionAndOcclusion.
         /// \sa
         /// - \ref AK::SpatialAudio::SetGameObjectToPortalObstruction
         /// - \ref AK::SpatialAudio::SetPortalToPortalObstruction
         /// - \ref AK::SoundEngine::SetObjectObstructionAndOcclusion
         AK_EXTERNAPIFUNC(AKRESULT, SetPortalObstructionAndOcclusion)(
             AkPortalID in_PortalID,             ///< Portal ID.
             AkReal32 in_fObstruction,           ///< Obstruction value.  Valid range 0.f-1.f
             AkReal32 in_fOcclusion,             ///< Occlusion value.  Valid range 0.f-1.f
             bool     in_bTransition = false     ///< Transition obstruction and occlusion through portals.  Default false
             );
  
         /// Set the obstruction value of the path between a game object and a portal that has been created by Spatial Audio.
         /// The obstruction value is applied on one of the path segments of the sound between the emitter and the listener.
         /// Diffraction must be enabled on the sound for a diffraction path to be created.
         /// Also, there should not be any portals between the provided game object and portal ID parameters.
         /// The obstruction value is used to simulate objects between the portal and the game object that are obstructing the sound.
         /// Send an obstruction value of 0 to ensure the value is removed from the internal data structure.
         /// \sa
         /// - \ref AK::SpatialAudio::SetPortalObstructionAndOcclusion
         AK_EXTERNAPIFUNC(AKRESULT, SetGameObjectToPortalObstruction)(
             AkGameObjectID in_gameObjectID,     ///< Game object ID
             AkPortalID in_PortalID,             ///< Portal ID
             AkReal32 in_fObstruction            ///< Obstruction value.  Valid range 0.f-1.f
             );
  
         /// Set the obstruction value of the path between two portals that has been created by Spatial Audio.
         /// The obstruction value is applied on one of the path segments of the sound between the emitter and the listener.
         /// Diffraction must be enabled on the sound for a diffraction path to be created.
         /// Also, there should not be any portals between the two provided ID parameters.
         /// The obstruction value is used to simulate objects between the portals that are obstructing the sound.
         /// Send an obstruction value of 0 to ensure the value is removed from the internal data structure.
         /// \sa
         /// - \ref AK::SpatialAudio::SetPortalObstructionAndOcclusion
         AK_EXTERNAPIFUNC(AKRESULT, SetPortalToPortalObstruction)(
             AkPortalID in_PortalID0,            ///< Portal ID
             AkPortalID in_PortalID1,            ///< Portal ID
             AkReal32 in_fObstruction            ///< Obstruction value.  Valid range 0.f-1.f
             );
  
         /// Query information about the wet diffraction amount for the portal \c in_portal, returned as a normalized value \c out_wetDiffraction in the range [0,1].  
         /// The wet diffraction is calculated from how far into the 'shadow region' the listener is from the portal.  Unlike dry diffraction, the 
         /// wet diffraction does not depend on the incident angle, but only the normal of the portal.
         /// This value is applied by spatial audio, to the Diffraction value and built-in game parameter of the room game object that is
         /// on the other side of the portal (relative to the listener).
         /// This function must acquire the global sound engine lock and therefore, may block waiting for the lock.
         /// \sa
         /// - \ref AkSpatialAudioInitSettings
         AK_EXTERNAPIFUNC(AKRESULT, QueryWetDiffraction)(
             AkPortalID in_portal,           ///< The ID of the game object that the client wishes to query.
             AkReal32& out_wetDiffraction    ///< The number of slots in \c out_aPaths, after returning the number of valid elements written.
             );
  
         /// Query information about the diffraction state for a particular listener and emitter, which has been calculated using the data provided via the spatial audio emitter API. This function can be used for debugging purposes.
         /// Returned in \c out_aPaths, this array contains the sound paths calculated from diffraction around a geometric edge and/or diffraction through portals connecting rooms.
         /// No paths will be returned in any of the following conditions: (1) the emitter game object has a direct line of sight to the listener game object, (2) the emitter and listener are in the same room, and the listener is completely outside the radius of the emitter, 
         /// or (3) The emitter and listener are in different rooms, but there are no paths found via portals between the emitter and the listener.
         /// A single path with zero diffraction nodes is returned when all of the following conditions are met: (1) the emitter and listener are in the same room, (2) there is no direct line of sight, and (3) either the Voice's Attenuation's curve max distance is exceeded or the accumulated diffraction coefficient exceeds 1.0.
         /// This function must acquire the global sound engine lock and, therefore, may block waiting for the lock.
         /// \sa
         /// - \ref AkDiffractionPathInfo
         AK_EXTERNAPIFUNC(AKRESULT, QueryDiffractionPaths)(
             AkGameObjectID in_gameObjectID,     ///< The ID of the game object that the client wishes to query.
             AkUInt32 in_positionIndex,          ///< The index of the associated game object position.
             AkVector64& out_listenerPos,        ///< Returns the position of the listener game object that is associated with the game object \c in_gameObjectID.
             AkVector64& out_emitterPos,         ///< Returns the position of the emitter game object \c in_gameObjectID.
             AkDiffractionPathInfo* out_aPaths,  ///< Pointer to an array of \c AkDiffractionPathInfo's which will be filled on return.
             AkUInt32& io_uArraySize             ///< The number of slots in \c out_aPaths, after returning the number of valid elements written.
             );
  
         /// Set the operation used to calculate transmission loss on a direct path between emitter and listener.
         /// 
         AK_EXTERNAPIFUNC(AKRESULT, SetTransmissionOperation)(
             AkTransmissionOperation in_eOperation       ///< The operation to be used on all transmission paths.
             );
  
         /// Reset the stochastic engine state by re-initializing the random seeds.
         ///
         AK_EXTERNAPIFUNC(AKRESULT, ResetStochasticEngine)();
  
         //@}
     }
 };

AkSpatialAudioTypes.h

AK::SpatialAudio::QueryWetDiffraction

AKSOUNDENGINE_API AKRESULT QueryWetDiffraction(AkPortalID in_portal, AkReal32 &out_wetDiffraction)

AK::SpatialAudio::UnregisterListener

AKSOUNDENGINE_API AKRESULT UnregisterListener(AkGameObjectID in_gameObjectID)

AkPortalParams

Parameters passed to SetPortal.

Definition: AkSpatialAudioTypes.h:605

AkSoundEngine.h

Definition of data structures for AkAudioObject.

Definition: AkWwiseSDKVersion.cs:31

AK::SpatialAudio::RemovePortal

AKSOUNDENGINE_API AKRESULT RemovePortal(AkPortalID in_PortalID)

AK::SpatialAudio::SetGameObjectInRoom

AKSOUNDENGINE_API AKRESULT SetGameObjectInRoom(AkGameObjectID in_gameObjectID, AkRoomID in_CurrentRoomID)

AK::SpatialAudio::SetMaxEmitterRoomAuxSends

AKSOUNDENGINE_API AKRESULT SetMaxEmitterRoomAuxSends(AkUInt32 in_uMaxEmitterRoomAuxSends)

AK::SpatialAudio::Init

AKSOUNDENGINE_API AKRESULT Init(const AkSpatialAudioInitSettings &in_initSettings)

Initialize the SpatialAudio API.

AkTransmissionOperation

Definition: AkSpatialAudioTypes.h:62

AK::SpatialAudio::SetReverbZone

AKSOUNDENGINE_API AKRESULT SetReverbZone(AkRoomID in_ReverbZone, AkRoomID in_ParentRoom, AkReal32 in_transitionRegionWidth)

AK::SpatialAudio::SetMaxDiffractionPaths

AKSOUNDENGINE_API AKRESULT SetMaxDiffractionPaths(AkUInt32 in_uMaxDiffractionPaths, AkGameObjectID in_gameObjectID=AK_INVALID_GAME_OBJECT)

AK::SpatialAudio::SetTransmissionOperation

AKSOUNDENGINE_API AKRESULT SetTransmissionOperation(AkTransmissionOperation in_eOperation)

AkGameObjectID

AkUInt64 AkGameObjectID

Game object ID.

Definition: AkTypedefs.h:47

AK::SpatialAudio::QueryDiffractionPaths

AKSOUNDENGINE_API AKRESULT QueryDiffractionPaths(AkGameObjectID in_gameObjectID, AkUInt32 in_positionIndex, AkVector64 &out_listenerPos, AkVector64 &out_emitterPos, AkDiffractionPathInfo *out_aPaths, AkUInt32 &io_uArraySize)

AK::SpatialAudio::SetSmoothingConstant

AKSOUNDENGINE_API AKRESULT SetSmoothingConstant(AkReal32 in_fSmoothingConstantMs, AkGameObjectID in_gameObjectID=AK_INVALID_GAME_OBJECT)

AK_EXTERNAPIFUNC

#define AK_EXTERNAPIFUNC(_type, _name)

Definition: AkSoundEngineExport.h:81

AK::SpatialAudio::SetEarlyReflectionsAuxSend

AKSOUNDENGINE_API AKRESULT SetEarlyReflectionsAuxSend(AkGameObjectID in_gameObjectID, AkAuxBusID in_auxBusID)

AkImageSourceID

AkUInt32 AkImageSourceID

Image Source ID.

Definition: AkTypedefs.h:71

AK_INVALID_GAME_OBJECT

static const AkGameObjectID AK_INVALID_GAME_OBJECT

Invalid game object (may also mean all game objects)

Definition: AkConstants.h:33

AkReflectGameData.h

AK::SpatialAudio::QueryReflectionPaths

AKSOUNDENGINE_API AKRESULT QueryReflectionPaths(AkGameObjectID in_gameObjectID, AkUInt32 in_positionIndex, AkVector64 &out_listenerPos, AkVector64 &out_emitterPos, AkReflectionPathInfo *out_aPaths, AkUInt32 &io_uArraySize)

AkUniqueID

AkUInt32 AkUniqueID

Unique 32-bit ID.

Definition: AkTypedefs.h:39

AkAuxBusID

AkUInt32 AkAuxBusID

Auxilliary bus ID.

Definition: AkTypedefs.h:52

AK::SpatialAudio::RemoveGeometryInstance

AKSOUNDENGINE_API AKRESULT RemoveGeometryInstance(AkGeometryInstanceID in_GeometryInstanceID)

AkReal32

float AkReal32

32-bit floating point

Definition: AkNumeralTypes.h:43

AK::SpatialAudio::SetImageSource

AKSOUNDENGINE_API AKRESULT SetImageSource(AkImageSourceID in_srcID, const AkImageSourceSettings &in_info, const char *in_name, AkUniqueID in_AuxBusID=AK_INVALID_AUX_ID, AkGameObjectID in_gameObjectID=AK_INVALID_GAME_OBJECT)

AK::SpatialAudio::SetGeometry

AKSOUNDENGINE_API AKRESULT SetGeometry(AkGeometrySetID in_GeomSetID, const AkGeometryParams &in_params)

AkReflectionPathInfo

Structure for retrieving information about the indirect paths of a sound that have been calculated vi...

Definition: AkSpatialAudioTypes.h:491

AK::SpatialAudio::SetPortalToPortalObstruction

AKSOUNDENGINE_API AKRESULT SetPortalToPortalObstruction(AkPortalID in_PortalID0, AkPortalID in_PortalID1, AkReal32 in_fObstruction)

AK::SpatialAudio::RemoveReverbZone

AKSOUNDENGINE_API AKRESULT RemoveReverbZone(AkRoomID in_ReverbZone)

AK::SpatialAudio::SetMaxGlobalReflectionPaths

AKSOUNDENGINE_API AKRESULT SetMaxGlobalReflectionPaths(AkUInt32 in_uMaxGlobalReflectionPaths)

AK::SpatialAudio::SetDiffractionOrder

AKSOUNDENGINE_API AKRESULT SetDiffractionOrder(AkUInt32 in_uDiffractionOrder, bool in_bUpdatePaths)

AK::SpatialAudio::ClearImageSources

AKSOUNDENGINE_API AKRESULT ClearImageSources(AkUniqueID in_AuxBusID=AK_INVALID_AUX_ID, AkGameObjectID in_gameObjectID=AK_INVALID_GAME_OBJECT)

AK::SpatialAudio::SetLoadBalancingSpread

AKSOUNDENGINE_API AKRESULT SetLoadBalancingSpread(AkUInt32 in_uNbFrames)

AK::SpatialAudio::SetGeometryInstance

AKSOUNDENGINE_API AKRESULT SetGeometryInstance(AkGeometryInstanceID in_GeometryInstanceID, const AkGeometryInstanceParams &in_params)

AK::SpatialAudio::RemoveImageSource

AKSOUNDENGINE_API AKRESULT RemoveImageSource(AkImageSourceID in_srcID, AkUniqueID in_AuxBusID=AK_INVALID_AUX_ID, AkGameObjectID in_gameObjectID=AK_INVALID_GAME_OBJECT)

AkSpatialAudioInitSettings

Initialization settings of the spatial audio module.

Definition: AkSpatialAudioTypes.h:220

AK::SpatialAudio::UnsetGameObjectInRoom

AKSOUNDENGINE_API AKRESULT UnsetGameObjectInRoom(AkGameObjectID in_gameObjectID)

AK::SpatialAudio::RemoveRoom

AKSOUNDENGINE_API AKRESULT RemoveRoom(AkRoomID in_RoomID)

AK::SpatialAudio::SetReflectionsOrder

AKSOUNDENGINE_API AKRESULT SetReflectionsOrder(AkUInt32 in_uReflectionsOrder, bool in_bUpdatePaths)

AkSpatialAudioID

Base type for ID's used by Wwise spatial audio.

Definition: AkSpatialAudioTypes.h:90

AkImageSourceSettings

Settings for individual image sources.

Definition: AkSpatialAudioTypes.h:365

AK::SpatialAudio::SetPortal

AKSOUNDENGINE_API AKRESULT SetPortal(AkPortalID in_PortalID, const AkPortalParams &in_Params, const char *in_PortalName=nullptr)

AK_INVALID_AUX_ID

static const AkAuxBusID AK_INVALID_AUX_ID

Invalid auxiliary bus ID (or no Aux bus ID)

Definition: AkConstants.h:40

AK::SpatialAudio::ResetStochasticEngine

AKSOUNDENGINE_API AKRESULT ResetStochasticEngine()

AkGeometryInstanceParams

Parameters passed to SetGeometryInstance.

Definition: AkSpatialAudioTypes.h:833

AKRESULT

Definition: AkEnums.h:32

AK::SpatialAudio::SetPortalObstructionAndOcclusion

AKSOUNDENGINE_API AKRESULT SetPortalObstructionAndOcclusion(AkPortalID in_PortalID, AkReal32 in_fObstruction, AkReal32 in_fOcclusion, bool in_bTransition=false)

AK::SpatialAudio::SetGameObjectToPortalObstruction

AKSOUNDENGINE_API AKRESULT SetGameObjectToPortalObstruction(AkGameObjectID in_gameObjectID, AkPortalID in_PortalID, AkReal32 in_fObstruction)

AkVector64

3D 64-bit vector. Intended as storage for world positions of sounds and objects, benefiting from 64-b...

Definition: Ak3DObjects.h:34

AkUInt32

uint32_t AkUInt32

Unsigned 32-bit integer.

Definition: AkNumeralTypes.h:35

AkRoomID

Definition: AkSpatialAudioTypes.h:125

AK::SpatialAudio::SetAdjacentRoomBleed