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Wwise SDK 2024.1.0
AkAudioObject.h
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1 /*******************************************************************************
2 The content of this file includes portions of the AUDIOKINETIC Wwise Technology
3 released in source code form as part of the SDK installer package.
4 
5 Commercial License Usage
6 
7 Licensees holding valid commercial licenses to the AUDIOKINETIC Wwise Technology
8 may use this file in accordance with the end user license agreement provided
9 with the software or, alternatively, in accordance with the terms contained in a
10 written agreement between you and Audiokinetic Inc.
11 
12 Apache License Usage
13 
14 Alternatively, this file may be used under the Apache License, Version 2.0 (the
15 "Apache License"); you may not use this file except in compliance with the
16 Apache License. You may obtain a copy of the Apache License at
17 http://www.apache.org/licenses/LICENSE-2.0.
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19 Unless required by applicable law or agreed to in writing, software distributed
20 under the Apache License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
21 OR CONDITIONS OF ANY KIND, either express or implied. See the Apache License for
22 the specific language governing permissions and limitations under the License.
23 
24  Copyright (c) 2024 Audiokinetic Inc.
25 *******************************************************************************/
26 
27 // AkAudioObjectDefs.h
28 
29 /// Definition of data structures for AkAudioObject
30 
31 #pragma once
32 
33 #include <AK/SoundEngine/Common/AkCommonDefs.h>
34 #include <AK/SoundEngine/Common/IAkPluginMemAlloc.h>
35 #include <AK/Tools/Common/AkArray.h>
36 #include <AK/Tools/Common/AkString.h>
37 
38 namespace AK
39 {
40  class IAkPluginParam;
41 }
42 
43 /// An audio object refers to an audio signal with some attached metadata going through the sound engine pipeline.
44 /// The AkAudioObject struct encapsulates the metadata part. The signal itself is contained in a separate AkAudioBuffer instance.
45 struct AkAudioObject
46 {
47  /// Constructor
48  AkAudioObject()
49  :key(AK_INVALID_AUDIO_OBJECT_ID)
50  ,cumulativeGain(1.f, 1.f)
51  ,instigatorID(AK_INVALID_PIPELINE_ID)
52  ,priority(AK_DEFAULT_PRIORITY)
53  {}
54 
55  /// Destructor
56  ~AkAudioObject()
57  {
58  arCustomMetadata.Term();
59  objectName.Term();
60  }
61 
62  static const AkUInt64 kObjectKeyNumBits = 56;
63  static const AkUInt64 kObjectKeyMask = (((AkUInt64)1 << kObjectKeyNumBits) - 1);
64 
65  AkAudioObjectID key; ///< Unique ID, local to a given bus. Only the lower 56 of 64 bits are used for the object itself. The highest 8 bits are available for channel indexing.
66 
67  AkPositioningData positioning; ///< Positioning data for deferred 3D rendering.
68  AkRamp cumulativeGain; ///< Cumulative ramping gain to apply when mixing down to speaker bed or final endpoint
69  AkPipelineID instigatorID; ///< Profiling ID of the node from which the object stems (typically the voice, instance of an actor-mixer).
70  AkPriority priority; ///< Audio object playback priority. Object with a higher priority will be rendered using the hardware's object functionality on platforms that supports it, whereas objects with a lower priority will be downmixed to a lower resolution 3D bed. Audio object priorities should be retrieved, or set through IAkPluginServiceAudioObjectPriority to retain compatibility with future Wwise releases.
71 
72  /// Custom object metadata.
73  struct CustomMetadata
74  {
75  AkPluginID pluginID; ///< Full plugin ID, including company ID and plugin type. See AKMAKECLASSID macro.
76  AkUniqueID contextID; ///< (Profiling) ID of the sound or bus from which the custom metadata was fetched.
77  AK::IAkPluginParam* pParam; ///< Custom, pluggable medata. Note: any custom metadata is expected to exist for only the current sound engine render tick, and persistent references to it should not be stored.
78  };
79 
80  /// Array type for carrying custom metadata.
81  class ArrayCustomMetadata : public AkArray<CustomMetadata, const CustomMetadata&, AkPluginArrayAllocator>
82  {
83  public:
84  using ArrayType = AkArray<CustomMetadata, const CustomMetadata&, AkPluginArrayAllocator>;
85 
86  ArrayType::Iterator FindByPluginID(AkPluginID pluginID) const
87  {
88  for (auto it = Begin(); it != End(); ++it)
89  {
90  if ((*it).pluginID == pluginID)
91  return it;
92  }
93  return End();
94  }
95  };
96 
97  ArrayCustomMetadata arCustomMetadata; ///< Array of custom metadata, gathered from visited objects. Note: any custom metadata is expected to exist for only the current sound engine render tick, and persistent references to it should not be stored.
98 
99  typedef AkString<AkPluginArrayAllocator, char> String; ///< String type for use in 3D audio objects.
100  String objectName; ///< Name string of the object, to appear in the object profiler. This is normally used by out-of-place object processors for naming their output objects. Built-in sound engine structures don't use it.
101 
102  /// Copies object metadata (everything but the key) from another object.
103  void CopyContents(
104  const AkAudioObject& in_src ///< Object from which metadata is copied.
105  )
106  {
107  positioning = in_src.positioning;
108  cumulativeGain = in_src.cumulativeGain;
109  instigatorID = in_src.instigatorID;
110  priority = in_src.priority;
111  arCustomMetadata.Copy(in_src.arCustomMetadata);
112  objectName = in_src.objectName; // AkString performs a shallow copy when it can, like here.
113  }
114 
115  /// Moves object metadata (everything but the key) from another object.
116  void TransferContents(
117  AkAudioObject& in_src ///< Object from which metadata is moved.
118  )
119  {
120  positioning = in_src.positioning;
121  cumulativeGain = in_src.cumulativeGain;
122  instigatorID = in_src.instigatorID;
123  priority = in_src.priority;
124  arCustomMetadata.Transfer(in_src.arCustomMetadata);
125  objectName.Transfer(in_src.objectName);
126  }
127 
128  void SetCustomMetadata(CustomMetadata* in_aCustomMetadata, AkUInt32 in_uLength)
129  {
130  if (arCustomMetadata.Resize(in_uLength))
131  {
132  for (int i = 0; i < (int)in_uLength; ++i)
133  {
134  arCustomMetadata[i] = in_aCustomMetadata[i];
135  }
136  }
137  }
138 
139  /// Transfer function for transfer move policies.
140  void Transfer(
141  AkAudioObject& in_from ///< Object from which data is transferred.
142  )
143  {
144  key = in_from.key;
145  TransferContents(in_from);
146  }
147 
148  /// Object processors may give an explicit name to objects.
149  /// \return AK_Success if the string was allocated successfully, AK_InsufficientMemory otherwise.
150  AKRESULT SetName(
151  AK::IAkPluginMemAlloc* in_pAllocator, ///< Memory allocator.
152  const char* in_szName ///< Null-terminated string to allocate and store on this object.
153  )
154  {
155  objectName.Init(in_pAllocator);
156  objectName = in_szName;
157  return objectName.AllocCopy();
158  }
159 
160  /// Reset object state in preparation for next frame.
161  void ResetState()
162  {
163  arCustomMetadata.Term(); // Reset custom metadata in preparation for next frame.
164  objectName.ClearReference(); // Clear reference to string in preparation for next frame.
165  }
166 };
167 
168 /// A collection of audio objects. Encapsulates the audio data and metadata of each audio object in separate arrays.
169 struct AkAudioObjects
170 {
171  AkAudioObjects(AkUInt32 in_uNumObjects = 0, AkAudioBuffer** in_ppObjectBuffers = nullptr, AkAudioObject** in_ppObjects = nullptr)
172  : uNumObjects(in_uNumObjects)
173  , ppObjectBuffers(in_ppObjectBuffers)
174  , ppObjects(in_ppObjects)
175  {}
176 
177  AkUInt32 uNumObjects; ///< Number of audio objects.
178  AkAudioBuffer** ppObjectBuffers; ///< Array of pointers to audio object buffers.
179  AkAudioObject** ppObjects; ///< Array of pointers to audio objects.
180 };
181 
AkAudioObject::Transfer
void Transfer(AkAudioObject &in_from)
Transfer function for transfer move policies.
Definition: AkAudioObject.h:140
AkAudioObject::String
AkString< AkPluginArrayAllocator, char > String
String type for use in 3D audio objects.
Definition: AkAudioObject.h:99
AK
Definition of data structures for AkAudioObject
Definition: AkWwiseSDKVersion.cs:31
AkAudioObject::AkAudioObject
AkAudioObject()
Constructor
Definition: AkAudioObject.h:48
AkAudioObject::kObjectKeyNumBits
static const AkUInt64 kObjectKeyNumBits
Definition: AkAudioObject.h:62
AkAudioObject::positioning
AkPositioningData positioning
Positioning data for deferred 3D rendering.
Definition: AkAudioObject.h:67
AkAudioObject::cumulativeGain
AkRamp cumulativeGain
Cumulative ramping gain to apply when mixing down to speaker bed or final endpoint
Definition: AkAudioObject.h:68
AkString::Transfer
void Transfer(AkString< TAlloc, T_CHAR > &in_from)
Definition: AkString.h:109
AkAudioObjectID
AkUInt64 AkAudioObjectID
Audio Object ID
Definition: AkTypes.h:88
AkArray::Copy
AKRESULT Copy(const AkArray< T, ARG_T, TAlloc, TGrowBy, TMovePolicy > &in_rSource)
Definition: AkArray.h:866
AkPipelineID
AkUInt32 AkPipelineID
Unique node (bus, voice) identifier for profiling.
Definition: AkTypes.h:86
AkAudioObject::kObjectKeyMask
static const AkUInt64 kObjectKeyMask
Definition: AkAudioObject.h:63
AkAudioObject::key
AkAudioObjectID key
Unique ID, local to a given bus. Only the lower 56 of 64 bits are used for the object itself....
Definition: AkAudioObject.h:65
AKRESULT
AKRESULT
Standard function call result.
Definition: AkTypes.h:134
AK_INVALID_AUDIO_OBJECT_ID
static const AkAudioObjectID AK_INVALID_AUDIO_OBJECT_ID
Invalid audio object ID
Definition: AkTypes.h:112
AkAudioObject::CopyContents
void CopyContents(const AkAudioObject &in_src)
Copies object metadata (everything but the key) from another object.
Definition: AkAudioObject.h:103
AkArray
Specific implementation of array
Definition: AkArray.h:259
AkAudioObject::TransferContents
void TransferContents(AkAudioObject &in_src)
Moves object metadata (everything but the key) from another object.
Definition: AkAudioObject.h:116
AK_DEFAULT_PRIORITY
static const AkPriority AK_DEFAULT_PRIORITY
Default sound / I/O priority
Definition: AkTypes.h:115
AkAudioObject::SetName
AKRESULT SetName(AK::IAkPluginMemAlloc *in_pAllocator, const char *in_szName)
Definition: AkAudioObject.h:150
AkPluginArrayAllocator::Init
AkForceInline void Init(AK::IAkPluginMemAlloc *in_pAllocator)
Definition: IAkPluginMemAlloc.h:201
AkUniqueID
AkUInt32 AkUniqueID
Unique 32-bit ID
Definition: AkTypes.h:52
AkArray::Resize
bool Resize(AkUInt32 in_uiSize)
Resize the array to the specified size.
Definition: AkArray.h:823
AkAudioObjects::ppObjectBuffers
AkAudioBuffer ** ppObjectBuffers
Array of pointers to audio object buffers.
Definition: AkAudioObject.h:178
AkPluginID
AkUInt32 AkPluginID
Source or effect plug-in ID
Definition: AkTypes.h:63
AkAudioObject::ResetState
void ResetState()
Reset object state in preparation for next frame.
Definition: AkAudioObject.h:161
AkAudioObjects::uNumObjects
AkUInt32 uNumObjects
Number of audio objects.
Definition: AkAudioObject.h:177
AkAudioObject::arCustomMetadata
ArrayCustomMetadata arCustomMetadata
Array of custom metadata, gathered from visited objects. Note: any custom metadata is expected to exi...
Definition: AkAudioObject.h:97
AK_INVALID_PIPELINE_ID
static const AkPipelineID AK_INVALID_PIPELINE_ID
Invalid pipeline ID (for profiling)
Definition: AkTypes.h:111
AkRamp
Volume ramp specified by end points "previous" and "next".
Definition: AkTypes.h:895
AkArray< CustomMetadata, const CustomMetadata &, AkPluginArrayAllocator >::End
Iterator End() const
Returns the iterator to the end of the array
Definition: AkArray.h:353
AkAudioObject::CustomMetadata::pluginID
AkPluginID pluginID
Full plugin ID, including company ID and plugin type. See AKMAKECLASSID macro.
Definition: AkAudioObject.h:75
AkPriority
AkInt8 AkPriority
Priority
Definition: AkTypes.h:67
AkAudioObject::ArrayCustomMetadata::FindByPluginID
ArrayType::Iterator FindByPluginID(AkPluginID pluginID) const
Definition: AkAudioObject.h:86
AkAudioObject::CustomMetadata::pParam
AK::IAkPluginParam * pParam
Custom, pluggable medata. Note: any custom metadata is expected to exist for only the current sound e...
Definition: AkAudioObject.h:77
AkStringData::ClearReference
void ClearReference()
Definition: AkString.h:50
AkArray::Transfer
void Transfer(AkArray< T, ARG_T, TAlloc, TGrowBy, TMovePolicy > &in_rSource)
Definition: AkArray.h:853
AkAudioObject::instigatorID
AkPipelineID instigatorID
Profiling ID of the node from which the object stems (typically the voice, instance of an actor-mixer...
Definition: AkAudioObject.h:69
AkArray< CustomMetadata, const CustomMetadata &, AkPluginArrayAllocator >::Begin
Iterator Begin() const
Returns the iterator to the first item of the array, will be End() if the array is empty.
Definition: AkArray.h:345
AkPositioningData
Positioning data of 3D audio objects.
Definition: AkCommonDefs.h:277
AkAudioObjects
A collection of audio objects. Encapsulates the audio data and metadata of each audio object in separ...
Definition: AkAudioObject.h:170
AkUInt64
uint64_t AkUInt64
Unsigned 64-bit integer
Definition: AkNumeralTypes.h:39
AkString::AllocCopy
AKRESULT AllocCopy()
Definition: AkString.h:85
AkUInt32
uint32_t AkUInt32
Unsigned 32-bit integer
Definition: AkNumeralTypes.h:38
AkAudioObject::SetCustomMetadata
void SetCustomMetadata(CustomMetadata *in_aCustomMetadata, AkUInt32 in_uLength)
Definition: AkAudioObject.h:128
AkArray::Term
void Term()
Term the array. Must be called before destroying the object.
Definition: AkArray.h:555
AkAudioObject::~AkAudioObject
~AkAudioObject()
Destructor
Definition: AkAudioObject.h:56
AkAudioObject::priority
AkPriority priority
Audio object playback priority. Object with a higher priority will be rendered using the hardware's o...
Definition: AkAudioObject.h:70
AkAudioObject::objectName
String objectName
Name string of the object, to appear in the object profiler. This is normally used by out-of-place ob...
Definition: AkAudioObject.h:100
AkAudioObject::CustomMetadata
Custom object metadata.
Definition: AkAudioObject.h:74
AkStringData::Term
void Term()
Definition: AkString.h:40
AkAudioObject::ArrayCustomMetadata
Array type for carrying custom metadata.
Definition: AkAudioObject.h:82
AkAudioObject::CustomMetadata::contextID
AkUniqueID contextID
(Profiling) ID of the sound or bus from which the custom metadata was fetched.
Definition: AkAudioObject.h:76
AkAudioObjects::AkAudioObjects
AkAudioObjects(AkUInt32 in_uNumObjects=0, AkAudioBuffer **in_ppObjectBuffers=nullptr, AkAudioObject **in_ppObjects=nullptr)
Definition: AkAudioObject.h:171
AkAudioObjects::ppObjects
AkAudioObject ** ppObjects
Array of pointers to audio objects.
Definition: AkAudioObject.h:179

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