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Wwise SDK 2021.1.14
AkCallback.h
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24  Version: v2021.1.14 Build: 6590
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27 
28 // AkCallback.h
29 
30 /// \file
31 /// Declaration of callback prototypes
32 
33 
34 #ifndef _AK_CALLBACK_H_
35 #define _AK_CALLBACK_H_
36 
37 #include <AK/SoundEngine/Common/AkCommonDefs.h>
38 #include <AK/SoundEngine/Common/AkMidiTypes.h>
39 
40 namespace AK
41 {
42  class IAkGlobalPluginContext;
43  class IAkMixerInputContext;
44  class IAkMixerPluginContext;
45 }
46 
47 /// Type of callback. Used as a bitfield in methods AK::SoundEngine::PostEvent() and AK::SoundEngine::DynamicSequence::Open().
48 enum AkCallbackType
49 {
50  AK_EndOfEvent = 0x0001, ///< Callback triggered when reaching the end of an event. AkCallbackInfo can be cast to AkEventCallbackInfo.
51  AK_EndOfDynamicSequenceItem = 0x0002, ///< Callback triggered when reaching the end of a dynamic sequence item. AkCallbackInfo can be cast to AkDynamicSequenceItemCallbackInfo.
52  AK_Marker = 0x0004, ///< Callback triggered when encountering a marker during playback. AkCallbackInfo can be cast to AkMarkerCallbackInfo.
53  AK_Duration = 0x0008, ///< Callback triggered when the duration of the sound is known by the sound engine. AkCallbackInfo can be cast to AkDurationCallbackInfo.
54 
55  AK_SpeakerVolumeMatrix = 0x0010, ///< Callback triggered at each frame, letting the client modify the speaker volume matrix. AkCallbackInfo can be cast to AkSpeakerVolumeMatrixCallbackInfo.
56 
57  AK_Starvation = 0x0020, ///< Callback triggered when playback skips a frame due to stream starvation. AkCallbackInfo can be cast to AkEventCallbackInfo.
58 
59  AK_MusicPlaylistSelect = 0x0040, ///< Callback triggered when music playlist container must select the next item to play. AkCallbackInfo can be cast to AkMusicPlaylistCallbackInfo.
60  AK_MusicPlayStarted = 0x0080, ///< Callback triggered when a "Play" or "Seek" command has been executed ("Seek" commands are issued from AK::SoundEngine::SeekOnEvent()). Applies to objects of the Interactive-Music Hierarchy only. AkCallbackInfo can be cast to AkEventCallbackInfo.
61 
62  AK_MusicSyncBeat = 0x0100, ///< Enable notifications on Music Beat. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
63  AK_MusicSyncBar = 0x0200, ///< Enable notifications on Music Bar. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
64  AK_MusicSyncEntry = 0x0400, ///< Enable notifications on Music Entry Cue. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
65  AK_MusicSyncExit = 0x0800, ///< Enable notifications on Music Exit Cue. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
66  AK_MusicSyncGrid = 0x1000, ///< Enable notifications on Music Grid. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
67  AK_MusicSyncUserCue = 0x2000, ///< Enable notifications on Music Custom Cue. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
68  AK_MusicSyncPoint = 0x4000, ///< Enable notifications on Music switch transition synchronization point. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
69  AK_MusicSyncAll = 0x7f00, ///< Use this flag if you want to receive all notifications concerning AK_MusicSync registration.
70 
71  AK_MIDIEvent = 0x10000, ///< Enable notifications for MIDI events. AkCallbackInfo can be cast to AkMIDIEventCallbackInfo.
72 
73  AK_CallbackBits = 0xfffff, ///< Bitmask for all callback types.
74 
75  // Not callback types, but need to be part of same bitfield for AK::SoundEngine::PostEvent().
76  AK_EnableGetSourcePlayPosition = 0x100000, ///< Enable play position information for use by AK::SoundEngine::GetSourcePlayPosition().
77  AK_EnableGetMusicPlayPosition = 0x200000, ///< Enable play position information of music objects, queried via AK::MusicEngine::GetPlayingSegmentInfo().
78  AK_EnableGetSourceStreamBuffering = 0x400000 ///< Enable stream buffering information for use by AK::SoundEngine::GetSourceStreamBuffering().
79 };
80 
81 /// Callback information structure used as base for all notifications handled by \ref AkCallbackFunc.
82 /// \sa
83 /// - AK::SoundEngine::PostEvent()
84 /// - \ref soundengine_events
85 struct AkCallbackInfo
86 {
87  void * pCookie; ///< User data, passed to PostEvent()
88  AkGameObjectID gameObjID; ///< Game object ID
89 };
90 
91 /// Callback information structure corresponding to \ref AK_EndOfEvent, \ref AK_MusicPlayStarted and \ref AK_Starvation.
92 /// \sa
93 /// - AK::SoundEngine::PostEvent()
94 /// - \ref soundengine_events
95 struct AkEventCallbackInfo : public AkCallbackInfo
96 {
97  AkPlayingID playingID; ///< Playing ID of Event, returned by PostEvent()
98  AkUniqueID eventID; ///< Unique ID of Event, passed to PostEvent()
99 };
100 
101 /// Callback information structure corresponding to \ref AkCallbackType::AK_MIDIEvent
102 /// \sa
103 /// - AK::SoundEngine::PostEvent()
104 /// - \ref soundengine_events
105 struct AkMIDIEventCallbackInfo : public AkEventCallbackInfo
106 {
107  AkMIDIEvent midiEvent; ///< MIDI event triggered by event.
108 };
109 
110 
111 /// Callback information structure corresponding to \ref AK_Marker.
112 /// \sa
113 /// - AK::SoundEngine::PostEvent()
114 /// - \ref soundengine_events
115 /// - \ref soundengine_markers
116 struct AkMarkerCallbackInfo : public AkEventCallbackInfo
117 {
118  AkUInt32 uIdentifier; ///< Cue point identifier
119  AkUInt32 uPosition; ///< Position in the cue point (unit: sample frames)
120  const char* strLabel; ///< Label of the marker, read from the file
121 };
122 
123 /// Callback information structure corresponding to \ref AK_Duration.
124 /// \sa
125 /// - AK::SoundEngine::PostEvent()
126 /// - \ref soundengine_events
127 struct AkDurationCallbackInfo : public AkEventCallbackInfo
128 {
129  AkReal32 fDuration; ///< Duration of the sound (unit: milliseconds)
130  AkReal32 fEstimatedDuration; ///< Estimated duration of the sound depending on source settings such as pitch. (unit: milliseconds)
131  AkUniqueID audioNodeID; ///< Audio Node ID of playing item
132  AkUniqueID mediaID; ///< Media ID of playing item. (corresponds to 'ID' attribute of 'File' element in SoundBank metadata file)
133  bool bStreaming; ///< True if source is streaming, false otherwise.
134 };
135 
136 /// Callback information structure corresponding to \ref AK_EndOfDynamicSequenceItem.
137 /// \sa
138 /// - AK::SoundEngine::PostEvent()
139 /// - AK::SoundEngine::DynamicSequence::Open()
140 /// - \ref soundengine_events
141 struct AkDynamicSequenceItemCallbackInfo : public AkCallbackInfo
142 {
143  AkPlayingID playingID; ///< Playing ID of Dynamic Sequence, returned by AK::SoundEngine:DynamicSequence::Open()
144  AkUniqueID audioNodeID; ///< Audio Node ID of finished item
145  void* pCustomInfo; ///< Custom info passed to the DynamicSequence::Open function
146 };
147 
148 /// Callback information structure corresponding to \ref AK_SpeakerVolumeMatrix, and passed to callbacks registered in RegisterBusVolumeCallback()
149 /// or PostEvent() with AK_SpeakerVolumeMatrix. These callbacks are called at every audio frame for every connection from an input (voice
150 /// or bus) to an output bus (standard or auxiliary), at the point when an input signal is about to be mixed into a mixing bus, but just before
151 /// having been scaled in accordance to volumes authored in Wwise. The volumes are passed via this structure as pointers because they can be modified
152 /// in the callbacks. They are factored into two linear values ([0..1]): a common base value (pfBaseVolume), that is channel-agnostic and represents
153 /// the collapsed gain of all volume changes in Wwise (sliders, actions, RTPC, attenuations, ...), and a matrix of gains per input/output channel,
154 /// which depends on spatialization. Use the methods of AK::SpeakerVolumes::Matrix, defined in AkCommonDefs.h, to perform operations on them.
155 /// Access each input channel of the volumes matrix with AK::SpeakerVolumes::Matrix::GetChannel(), passing it the input and output channel configuration.
156 /// Then, you may access each element of the output vector using the standard bracket [] operator. See AK::SpeakerVolumes for more details.
157 /// It is crucial that the processing done in the callback be lightweight and non-blocking.
158 /// \sa
159 /// - \ref goingfurther_speakermatrixcallback
160 /// - AK::SoundEngine::PostEvent()
161 /// - \ref soundengine_events
162 /// - AK::SoundEngine::RegisterBusVolumeCallback()
163 struct AkSpeakerVolumeMatrixCallbackInfo : public AkEventCallbackInfo
164 {
165  AK::SpeakerVolumes::MatrixPtr pVolumes; ///< Pointer to volume matrix describing the contribution of each source channel to destination channels. Use methods of AK::SpeakerVolumes::Matrix to interpret them.
166  AkChannelConfig inputConfig; ///< Channel configuration of the voice/bus.
167  AkChannelConfig outputConfig; ///< Channel configuration of the output bus.
168  AkReal32 * pfBaseVolume; ///< Base volume, common to all channels.
169  AkReal32 * pfEmitterListenerVolume; ///< Emitter-listener pair-specific gain. When there are multiple emitter-listener pairs, this volume is set to that of the loudest pair, and the relative gain of other pairs is applied directly on the channel volume matrix pVolumes.
170  AK::IAkMixerInputContext * pContext; ///< Context of the current voice/bus about to be mixed into the output bus with specified base volume and volume matrix.
171  AK::IAkMixerPluginContext * pMixerContext; ///< Output mixing bus context. Use it to access a few useful panning and mixing services, as well as the ID of the output bus. NULL if pContext is the master audio bus.
172 };
173 
174 /// Callback information structure allowing to query signal metering on busses, at each frame, after having mixed all their inputs and processed their effects.
175 /// Register the callback using AK::SoundEngine::RegisterBusMeteringCallback.
176 struct AkBusMeteringCallbackInfo : public AkCallbackInfo
177 {
178  AK::IAkMetering* pMetering; ///< AK::IAkMetering interface for retrieving metering information.
179  AkChannelConfig channelConfig; ///< Channel configuration of the bus.
180  AkMeteringFlags eMeteringFlags; ///< Metering flags that were asked for in RegisterBusMeteringCallback(). You may only access corresponding meter values from in_pMeteringInfo. Others will fail.
181 };
182 
183 /// Callback information structure allowing to query signal metering on output devices, at each frame.
184 /// Register the callback using AK::SoundEngine::RegisterOutputDeviceMeteringCallback.
185 struct AkOutputDeviceMeteringCallbackInfo : public AkCallbackInfo
186 {
187  AK::IAkMetering * pMainMixMetering; ///< Metering information for the main mix
188  AkChannelConfig mainMixConfig; ///< Channel configuration of the main mix
189  AK::IAkMetering * pPassthroughMetering; ///< Metering information for the passthrough mix (if any; will be null otherwise)
190  AkChannelConfig passthroughMixConfig; ///< Channel configuration of the passthrough mix (if any; will be invalid otherwise)
191  AkUInt32 uNumSystemAudioObjects; ///< Number of System Audio Objects going out of the output device
192  AK::IAkMetering ** ppSystemAudioObjectMetering; ///< Metering information for each System Audio Object (number of elements is equal to uNumSystemAudioObjects)
193  AkMeteringFlags eMeteringFlags; ///< Metering flags that were asked for in RegisterOutputDeviceMeteringCallback(). You may only access corresponding meter values from the metering objects. Others will fail.
194 };
195 
196 /// Callback information structure corresponding to \ref AK_MusicPlaylistSelect.
197 /// Called when a music playlist container must select its next item to play.
198 /// The members uPlaylistSelection and uPlaylistItemDone are set by the sound
199 /// engine before the callback function call. They are set to the next item
200 /// selected by the sound engine. They are to be modified by the callback
201 /// function if the selection is to be changed.
202 /// \sa
203 /// - \ref soundengine_events
204 /// - AK::SoundEngine::PostEvent()
205 /// - \ref soundengine_music_callbacks
206 struct AkMusicPlaylistCallbackInfo : public AkEventCallbackInfo
207 {
208  AkUniqueID playlistID; ///< ID of playlist node
209  AkUInt32 uNumPlaylistItems; ///< Number of items in playlist node (may be segments or other playlists)
210  AkUInt32 uPlaylistSelection; ///< Selection: set by sound engine, modified by callback function (if not in range 0 <= uPlaylistSelection < uNumPlaylistItems then ignored).
211  AkUInt32 uPlaylistItemDone; ///< Playlist node done: set by sound engine, modified by callback function (if set to anything but 0 then the current playlist item is done, and uPlaylistSelection is ignored)
212 };
213 
214 /// Structure used to query info on active playing segments.
215 struct AkSegmentInfo
216 {
217  AkTimeMs iCurrentPosition; ///< Current position of the segment, relative to the Entry Cue, in milliseconds. Range is [-iPreEntryDuration, iActiveDuration+iPostExitDuration].
218  AkTimeMs iPreEntryDuration; ///< Duration of the pre-entry region of the segment, in milliseconds.
219  AkTimeMs iActiveDuration; ///< Duration of the active region of the segment (between the Entry and Exit Cues), in milliseconds.
220  AkTimeMs iPostExitDuration; ///< Duration of the post-exit region of the segment, in milliseconds.
221  AkTimeMs iRemainingLookAheadTime;///< Number of milliseconds remaining in the "looking-ahead" state of the segment, when it is silent but streamed tracks are being prefetched.
222  AkReal32 fBeatDuration; ///< Beat Duration in seconds.
223  AkReal32 fBarDuration; ///< Bar Duration in seconds.
224  AkReal32 fGridDuration; ///< Grid duration in seconds.
225  AkReal32 fGridOffset; ///< Grid offset in seconds.
226 };
227 
228 /// Callback information structure corresponding to \ref AK_MusicSyncEntry, \ref AK_MusicSyncBeat, \ref AK_MusicSyncBar, \ref AK_MusicSyncExit, \ref AK_MusicSyncGrid, \ref AK_MusicSyncPoint and \ref AK_MusicSyncUserCue.
229 /// If you need the Tempo, you can compute it using the fBeatDuration
230 /// Tempo (beats per minute) = 60/fBeatDuration
231 /// \sa
232 /// - \ref soundengine_events
233 /// - AK::SoundEngine::PostEvent()
234 /// - \ref soundengine_music_callbacks
235 struct AkMusicSyncCallbackInfo : public AkCallbackInfo
236 {
237  AkPlayingID playingID; ///< Playing ID of Event, returned by PostEvent()
238  AkSegmentInfo segmentInfo; ///< Segment information corresponding to the segment triggering this callback.
239  AkCallbackType musicSyncType; ///< Would be either \ref AK_MusicSyncEntry, \ref AK_MusicSyncBeat, \ref AK_MusicSyncBar, \ref AK_MusicSyncExit, \ref AK_MusicSyncGrid, \ref AK_MusicSyncPoint or \ref AK_MusicSyncUserCue.
240  char * pszUserCueName; ///< Cue name (UTF-8 string). Set for notifications AK_MusicSyncUserCue. NULL if cue has no name.
241 };
242 
243 /// Resources data summary structure containing general information about the system
244 struct AkResourceMonitorDataSummary
245 {
246  AkReal32 totalCPU; ///< Pourcentage of the cpu time used for processing audio. Please note that the numbers may add up when using multiple threads.
247  AkReal32 pluginCPU; ///< Pourcentage of the cpu time used by plugin processing. Please note that the numbers may add up when using multiple threads.
248  AkUInt32 physicalVoices; ///< Number of active physical voices
249  AkUInt32 virtualVoices; ///< Number of active virtual voices
250  AkUInt32 totalVoices; ///< Number of active physical and virtual voices
251  AkUInt32 nbActiveEvents; ///< Number of events triggered at a certain time
252 };
253 
254 /// Function called on completion of an event, or when a marker is reached.
255 /// \param in_eType Type of callback.
256 /// \param in_pCallbackInfo Pointer to structure containing callback information. This pointer is invalidated as soon as the callback function returns.
257 /// \remarks An event is considered completed once all of its actions have been executed and all the playbacks in this events are terminated.
258 /// \remarks This callback is executed from the audio processing thread. The processing time in the callback function should be minimal. Having too much processing time could result in slowing down the audio processing.
259 /// \remarks Before waiting on an \ref AK_EndOfEvent, make sure that the event is going to end.
260 /// Some events can be continuously playing or infinitely looping, and the callback will not occur unless a specific stop event is sent to terminate the event.
261 /// \sa
262 /// - AK::SoundEngine::PostEvent()
263 /// - AK::SoundEngine::DynamicSequence::Open()
264 /// - \ref soundengine_events
265 /// - \ref soundengine_markers
266 /// - \ref soundengine_music_callbacks
267 AK_CALLBACK( void, AkCallbackFunc )(
268  AkCallbackType in_eType, ///< Callback type.
269  AkCallbackInfo* in_pCallbackInfo ///< Structure containing desired information. You can cast it to the proper sub-type, depending on the callback type.
270  );
271 
272 /// Function called on at every audio frame for the specified registered busses.
273 /// \sa
274 /// - AkSpeakerVolumeMatrixCallbackInfo
275 /// - AK::SoundEngine::RegisterBusVolumeCallback()
276 /// - \ref goingfurther_speakermatrixcallback
277 AK_CALLBACK( void, AkBusCallbackFunc )(
278  AkSpeakerVolumeMatrixCallbackInfo* in_pCallbackInfo ///< Structure containing desired bus information.
279  );
280 
281 /// Function called on at every audio frame for the specified registered busses, just after metering has been computed.
282 /// \sa
283 /// - AK::SoundEngine::RegisterBusMeteringCallback()
284 /// - AK::IAkMetering
285 /// - AkBusMeteringCallbackInfo
286 /// - \ref goingfurther_speakermatrixcallback
287 AK_CALLBACK( void, AkBusMeteringCallbackFunc )(
288  AkBusMeteringCallbackInfo * in_pCallbackInfo ///< Structure containing desired bus information.
289  );
290 
291 /// Function called on at every audio frame for the specified registered output devices, just after metering has been computed.
292 /// \sa
293 /// - AK::SoundEngine::RegisterOutputDeviceMeteringCallback()
294 /// - AK::IAkMetering
295 /// - AkOutputDeviceMeteringCallbackInfo
296 /// - \ref goingfurther_speakermatrixcallback
297 AK_CALLBACK( void, AkOutputDeviceMeteringCallbackFunc )(
298  AkOutputDeviceMeteringCallbackInfo * in_pCallbackInfo ///< Structure containing desired output device information.
299  );
300 
301 /// Callback prototype used with asynchronous bank load/unload requests.
302 /// This function is called when the bank request has been processed
303 /// and indicates if it was successfully executed or if an error occurred.
304 /// \param in_bankID Identifier of the bank that was explicitly loaded/unloaded.
305 /// In the case of PrepareEvent() or PrepareGameSyncs(), this value contains
306 /// the AkUniqueID of the event/game sync that was prepared/unprepared, if the array contained only
307 /// one element. Otherwise, in_bankID equals AK_INVALID_UNIQUE_ID.
308 /// \param in_pInMemoryBankPtr Value returned when the unloaded bank was loaded using an in memory location
309 /// \param in_eLoadResult Result of the requested action.
310 /// - AK_Success: Load or unload successful.
311 /// - AK_IDNotFound: At least one of the event/game sync identifiers passed to PrepareEvent() or PrepareGameSyncs() does not exist.
312 /// - AK_InsufficientMemory: Insufficient memory to store bank data.
313 /// - AK_BankReadError: I/O error.
314 /// - AK_WrongBankVersion: Invalid bank version: make sure the version of Wwise that
315 /// you used to generate the SoundBanks matches that of the SDK you are currently using.
316 /// - AK_InvalidFile: File specified could not be opened.
317 /// - AK_InvalidParameter: Invalid parameter.
318 /// - AK_Fail: Load or unload failed for any other reason. (Most likely small allocation failure)
319 /// \param in_pCookie Optional cookie that was passed to the bank request.
320 /// \remarks This callback is executed from the bank thread. The processing time in the callback function should be minimal. Having too much processing time could slow down the bank loading process.
321 /// \sa
322 /// - AK::SoundEngine::LoadBank()
323 /// - AK::SoundEngine::UnloadBank()
324 /// - AK::SoundEngine::PrepareEvent()
325 /// - AK::SoundEngine::PrepareGameSyncs()
326 /// - \ref soundengine_banks
327 AK_CALLBACK( void, AkBankCallbackFunc )(
328  AkUInt32 in_bankID,
329  const void * in_pInMemoryBankPtr,
330  AKRESULT in_eLoadResult,
331  void * in_pCookie
332  );
333 
334 /// Bit field of various locations in the audio processing loop where the game can be called back.
335 enum AkGlobalCallbackLocation
336 {
337  AkGlobalCallbackLocation_Register = (1 << 0), ///< Right after successful registration of callback/plugin. Typically used by plugins along with AkGlobalCallbackLocation_Term for allocating memory for the lifetime of the sound engine.
338 
339  AkGlobalCallbackLocation_Begin = (1 << 1), ///< Start of audio processing. The number of frames about to be rendered depends on the sink/end-point and can be zero.
340 
341  AkGlobalCallbackLocation_PreProcessMessageQueueForRender = (1 << 2), ///< Start of frame rendering, before having processed game messages.
342  AkGlobalCallbackLocation_PostMessagesProcessed = (1 << 3), ///< After one or more messages have been processed, but before updating game object and listener positions internally.
343  AkGlobalCallbackLocation_BeginRender = (1 << 4), ///< Start of frame rendering, after having processed game messages.
344  AkGlobalCallbackLocation_EndRender = (1 << 5), ///< End of frame rendering.
345 
346  AkGlobalCallbackLocation_End = (1 << 6), ///< End of audio processing.
347 
348  AkGlobalCallbackLocation_Term = (1 << 7), ///< Sound engine termination.
349 
350  AkGlobalCallbackLocation_Monitor = (1 << 8), ///< Send monitor data
351  AkGlobalCallbackLocation_MonitorRecap = (1 << 9), ///< Send monitor data connection to recap.
352 
353  AkGlobalCallbackLocation_Init = (1 << 10), ///< Sound engine initialization.
354 
355  AkGlobalCallbackLocation_Suspend = (1 << 11), ///< Sound engine suspension through \ref AK::SoundEngine::Suspend
356  AkGlobalCallbackLocation_WakeupFromSuspend = (1 << 12), ///< Sound engine awakening through \ref AK::SoundEngine::WakeupFromSuspend
357 
358  // IMPORTANT: Keep in sync with number of locations.
359  AkGlobalCallbackLocation_Num = 13 ///< Total number of global callback locations.
360 };
361 
362 /// Callback prototype used for global callback registration.
363 /// This callback may be called from various locations within the audio processing loop. The exact location from which it is called is passed in in_eLocation, and corresponds to one of the values
364 /// that were passed to RegisterGlobalCallback(). See the possible values of AkGlobalCallbackLocation for more details about the available locations.
365 /// \remarks This callback is normally executed from the main audio thread. The processing time in the callback function should be minimal. Having too much processing time could cause voice starvation.
366 /// \sa
367 /// - AK::SoundEngine::RegisterGlobalCallback()
368 /// - AK::SoundEngine::UnregisterGlobalCallback()
369 AK_CALLBACK( void, AkGlobalCallbackFunc )(
370  AK::IAkGlobalPluginContext * in_pContext, ///< Engine context.
371  AkGlobalCallbackLocation in_eLocation, ///< Location where this callback is fired.
372  void * in_pCookie ///< User cookie passed to AK::SoundEngine::RegisterGlobalCallback().
373  );
374 
375 
376 AK_CALLBACK( void, AkResourceMonitorCallbackFunc )(
377  const AkResourceMonitorDataSummary * in_pdataSummary ///< Data summary passed to the function registered using AK::SoundEngine::RegisterResourceMonitorCallback().
378  );
379 
380 namespace AK
381 {
382  enum AkAudioDeviceEvent
383  {
384  AkAudioDeviceEvent_Initialization, ///< Sent after an Audio Device has initialized. Initialization might have failed, check the AKRESULT.
385  AkAudioDeviceEvent_Removal, ///< Audio device was removed through explicit call (AK::SoundEngine::RemoveOutput or AK::SoundEngine::Term)
386  AkAudioDeviceEvent_SystemRemoval ///< Audio device was removed because of a system event (disconnection), hardware or driver problem. Check the AKRESULT when called through AkDeviceStatusCallbackFunc, it may give more context.
387  };
388 
389  /// Callback for Audio Device status changes.
390  /// \sa AK::SoundEngine::AddOutput
391  AK_CALLBACK(void, AkDeviceStatusCallbackFunc)(
392  AK::IAkGlobalPluginContext * in_pContext, ///< Engine context.
393  AkUniqueID in_idAudioDeviceShareset, ///< The audio device shareset attached, as passed to AK::SoundEngine::AddOutput or AK::SoundEngine::Init
394  AkUInt32 in_idDeviceID, ///< The audio device specific id, as passed to AK::SoundEngine::AddOutput or AK::SoundEngine::Init
395  AkAudioDeviceEvent in_idEvent, ///< The event for which this callback was called. See AK::AkAudioDeviceEvent. AKRESULT may provide more information.
396  AKRESULT in_AkResult ///< Result of the last operation.
397  );
398 }
399 
400 /// Callback prototype used for audio capture callback registration.
401 /// This callback will be called at the end of each audio frame for each output device that has been registered.
402 /// \remarks This callback will be executed on the main audio thread during real-time rendering and will be executed on the thread that \ref AK::SoundEngine::RenderAudio is called from when offline rendering is enabled.
403 /// \remarks The processing time in the callback function should be minimal. Having too much processing time could cause voice starvation during real-time rendering.
404 /// \remarks Note that a callback registered with <tt>in_idOutput</tt> equal to <tt>AK_INVALID_OUTPUT_DEVICE_ID</tt>, will receive the <tt>AkOutputDeviceID</tt> associated with the main output device.
405 /// \sa
406 /// - AK::SoundEngine::RenderAudio()
407 /// - AK::SoundEngine::RegisterCaptureCallback()
408 /// - AK::SoundEngine::UnregisterCaptureCallback()
409 AK_CALLBACK(void, AkCaptureCallbackFunc)(
410  AkAudioBuffer& in_CaptureBuffer, ///< Capture audio buffer. The data is always float interleaved.
411  AkOutputDeviceID in_idOutput, ///< The audio device specific id, as passed to AK::SoundEngine::AddOutput or AK::SoundEngine::Init
412  void* in_pCookie ///< Callback cookie that will be sent to the callback function along with additional information
413  );
414 
415 #endif // _AK_CALLBACK_H_
416 
AkReal32
float AkReal32
32-bit floating point
Definition: AkTypes.h:70
AK::IAkMixerPluginContext
Interface to retrieve contextual information for a mixer.
Definition: IAkPlugin.h:425
AK_MIDIEvent
@ AK_MIDIEvent
Enable notifications for MIDI events. AkCallbackInfo can be cast to AkMIDIEventCallbackInfo.
Definition: AkCallback.h:71
AkSpeakerVolumeMatrixCallbackInfo::pContext
AK::IAkMixerInputContext * pContext
Context of the current voice/bus about to be mixed into the output bus with specified base volume and...
Definition: AkCallback.h:170
AkGlobalCallbackLocation_Num
@ AkGlobalCallbackLocation_Num
Total number of global callback locations.
Definition: AkCallback.h:359
AkMarkerCallbackInfo::strLabel
const char * strLabel
Label of the marker, read from the file
Definition: AkCallback.h:120
AkDurationCallbackInfo::audioNodeID
AkUniqueID audioNodeID
Audio Node ID of playing item
Definition: AkCallback.h:131
AkResourceMonitorDataSummary
Resources data summary structure containing general information about the system
Definition: AkCallback.h:245
AK::IAkMetering
Interface to retrieve metering information about a buffer.
Definition: AkCommonDefs.h:204
AkTimeMs
AkInt32 AkTimeMs
Time in ms
Definition: AkTypes.h:66
AK
Audiokinetic namespace
Definition: AkWwiseSDKVersion.cs:32
AkMusicSyncCallbackInfo::pszUserCueName
char * pszUserCueName
Cue name (UTF-8 string). Set for notifications AK_MusicSyncUserCue. NULL if cue has no name.
Definition: AkCallback.h:240
AK_EndOfEvent
@ AK_EndOfEvent
Callback triggered when reaching the end of an event. AkCallbackInfo can be cast to AkEventCallbackIn...
Definition: AkCallback.h:50
AkCallbackInfo::gameObjID
AkGameObjectID gameObjID
Game object ID
Definition: AkCallback.h:88
AK::AkAudioDeviceEvent_Initialization
@ AkAudioDeviceEvent_Initialization
Sent after an Audio Device has initialized. Initialization might have failed, check the AKRESULT.
Definition: AkCallback.h:384
AK_MusicSyncEntry
@ AK_MusicSyncEntry
Enable notifications on Music Entry Cue. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
Definition: AkCallback.h:64
AkResourceMonitorCallbackFunc
void(* AkResourceMonitorCallbackFunc)(const AkResourceMonitorDataSummary *in_pdataSummary)
Definition: AkCallback.h:376
AK_MusicSyncBar
@ AK_MusicSyncBar
Enable notifications on Music Bar. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
Definition: AkCallback.h:63
AkSpeakerVolumeMatrixCallbackInfo::pfBaseVolume
AkReal32 * pfBaseVolume
Base volume, common to all channels.
Definition: AkCallback.h:168
AkGlobalCallbackLocation_EndRender
@ AkGlobalCallbackLocation_EndRender
End of frame rendering.
Definition: AkCallback.h:344
AkOutputDeviceMeteringCallbackInfo::mainMixConfig
AkChannelConfig mainMixConfig
Channel configuration of the main mix
Definition: AkCallback.h:188
AkMusicPlaylistCallbackInfo::uPlaylistSelection
AkUInt32 uPlaylistSelection
Selection: set by sound engine, modified by callback function (if not in range 0 <= uPlaylistSelectio...
Definition: AkCallback.h:210
AkGlobalCallbackLocation_Begin
@ AkGlobalCallbackLocation_Begin
Start of audio processing. The number of frames about to be rendered depends on the sink/end-point an...
Definition: AkCallback.h:339
AkGlobalCallbackLocation_Register
@ AkGlobalCallbackLocation_Register
Right after successful registration of callback/plugin. Typically used by plugins along with AkGlobal...
Definition: AkCallback.h:337
AkSpeakerVolumeMatrixCallbackInfo::outputConfig
AkChannelConfig outputConfig
Channel configuration of the output bus.
Definition: AkCallback.h:167
AK_Duration
@ AK_Duration
Callback triggered when the duration of the sound is known by the sound engine. AkCallbackInfo can be...
Definition: AkCallback.h:53
AkGlobalCallbackLocation_End
@ AkGlobalCallbackLocation_End
End of audio processing.
Definition: AkCallback.h:346
AkSegmentInfo::iActiveDuration
AkTimeMs iActiveDuration
Duration of the active region of the segment (between the Entry and Exit Cues), in milliseconds.
Definition: AkCallback.h:219
AkSpeakerVolumeMatrixCallbackInfo::inputConfig
AkChannelConfig inputConfig
Channel configuration of the voice/bus.
Definition: AkCallback.h:166
AkGameObjectID
AkUInt64 AkGameObjectID
Game object ID
Definition: AkTypes.h:70
AK_MusicSyncAll
@ AK_MusicSyncAll
Use this flag if you want to receive all notifications concerning AK_MusicSync registration.
Definition: AkCallback.h:69
AkGlobalCallbackLocation_Term
@ AkGlobalCallbackLocation_Term
Sound engine termination.
Definition: AkCallback.h:348
AKRESULT
AKRESULT
Standard function call result.
Definition: AkTypes.h:132
AkGlobalCallbackFunc
void(* AkGlobalCallbackFunc)(AK::IAkGlobalPluginContext *in_pContext, AkGlobalCallbackLocation in_eLocation, void *in_pCookie)
Definition: AkCallback.h:369
AkSpeakerVolumeMatrixCallbackInfo::pMixerContext
AK::IAkMixerPluginContext * pMixerContext
Output mixing bus context. Use it to access a few useful panning and mixing services,...
Definition: AkCallback.h:171
AkSegmentInfo
Structure used to query info on active playing segments.
Definition: AkCallback.h:216
AkSegmentInfo::fBeatDuration
AkReal32 fBeatDuration
Beat Duration in seconds.
Definition: AkCallback.h:222
AK_CallbackBits
@ AK_CallbackBits
Bitmask for all callback types.
Definition: AkCallback.h:73
AK::AkAudioDeviceEvent_SystemRemoval
@ AkAudioDeviceEvent_SystemRemoval
Audio device was removed because of a system event (disconnection), hardware or driver problem....
Definition: AkCallback.h:386
AkBusMeteringCallbackFunc
void(* AkBusMeteringCallbackFunc)(AkBusMeteringCallbackInfo *in_pCallbackInfo)
Definition: AkCallback.h:287
AkGlobalCallbackLocation_Suspend
@ AkGlobalCallbackLocation_Suspend
Sound engine suspension through AK::SoundEngine::Suspend
Definition: AkCallback.h:355
AkCallbackType
AkCallbackType
Type of callback. Used as a bitfield in methods AK::SoundEngine::PostEvent() and AK::SoundEngine::Dyn...
Definition: AkCallback.h:49
AkDurationCallbackInfo::fDuration
AkReal32 fDuration
Duration of the sound (unit: milliseconds)
Definition: AkCallback.h:129
AkGlobalCallbackLocation_WakeupFromSuspend
@ AkGlobalCallbackLocation_WakeupFromSuspend
Sound engine awakening through AK::SoundEngine::WakeupFromSuspend
Definition: AkCallback.h:356
AkGlobalCallbackLocation_Init
@ AkGlobalCallbackLocation_Init
Sound engine initialization.
Definition: AkCallback.h:353
AkOutputDeviceMeteringCallbackInfo::pMainMixMetering
AK::IAkMetering * pMainMixMetering
Metering information for the main mix
Definition: AkCallback.h:187
AkOutputDeviceMeteringCallbackFunc
void(* AkOutputDeviceMeteringCallbackFunc)(AkOutputDeviceMeteringCallbackInfo *in_pCallbackInfo)
Definition: AkCallback.h:297
AkSegmentInfo::iPreEntryDuration
AkTimeMs iPreEntryDuration
Duration of the pre-entry region of the segment, in milliseconds.
Definition: AkCallback.h:218
AkOutputDeviceMeteringCallbackInfo::passthroughMixConfig
AkChannelConfig passthroughMixConfig
Channel configuration of the passthrough mix (if any; will be invalid otherwise)
Definition: AkCallback.h:190
AkDynamicSequenceItemCallbackInfo::pCustomInfo
void * pCustomInfo
Custom info passed to the DynamicSequence::Open function
Definition: AkCallback.h:145
AkEventCallbackInfo::eventID
AkUniqueID eventID
Unique ID of Event, passed to PostEvent()
Definition: AkCallback.h:98
AkOutputDeviceMeteringCallbackInfo::pPassthroughMetering
AK::IAkMetering * pPassthroughMetering
Metering information for the passthrough mix (if any; will be null otherwise)
Definition: AkCallback.h:189
AkMarkerCallbackInfo::uIdentifier
AkUInt32 uIdentifier
Cue point identifier
Definition: AkCallback.h:118
AK_Starvation
@ AK_Starvation
Callback triggered when playback skips a frame due to stream starvation. AkCallbackInfo can be cast t...
Definition: AkCallback.h:57
AkMusicSyncCallbackInfo::musicSyncType
AkCallbackType musicSyncType
Would be either AK_MusicSyncEntry, AK_MusicSyncBeat, AK_MusicSyncBar, AK_MusicSyncExit,...
Definition: AkCallback.h:239
AkUniqueID
AkUInt32 AkUniqueID
Unique 32-bit ID
Definition: AkTypes.h:62
AK_EnableGetSourceStreamBuffering
@ AK_EnableGetSourceStreamBuffering
Enable stream buffering information for use by AK::SoundEngine::GetSourceStreamBuffering().
Definition: AkCallback.h:78
AkSegmentInfo::fGridOffset
AkReal32 fGridOffset
Grid offset in seconds.
Definition: AkCallback.h:225
AkMarkerCallbackInfo::uPosition
AkUInt32 uPosition
Position in the cue point (unit: sample frames)
Definition: AkCallback.h:119
AkResourceMonitorDataSummary::physicalVoices
AkUInt32 physicalVoices
Number of active physical voices
Definition: AkCallback.h:248
AK::AkAudioDeviceEvent_Removal
@ AkAudioDeviceEvent_Removal
Audio device was removed through explicit call (AK::SoundEngine::RemoveOutput or AK::SoundEngine::Ter...
Definition: AkCallback.h:385
AkGlobalCallbackLocation_MonitorRecap
@ AkGlobalCallbackLocation_MonitorRecap
Send monitor data connection to recap.
Definition: AkCallback.h:351
AkMeteringFlags
AkMeteringFlags
Metering flags. Used for specifying bus metering, through AK::SoundEngine::RegisterBusVolumeCallback(...
Definition: AkTypes.h:830
AkCaptureCallbackFunc
void(* AkCaptureCallbackFunc)(AkAudioBuffer &in_CaptureBuffer, AkOutputDeviceID in_idOutput, void *in_pCookie)
Definition: AkCallback.h:409
AkMusicSyncCallbackInfo::playingID
AkPlayingID playingID
Playing ID of Event, returned by PostEvent()
Definition: AkCallback.h:237
AK_MusicSyncGrid
@ AK_MusicSyncGrid
Enable notifications on Music Grid. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
Definition: AkCallback.h:66
AkCallbackFunc
void(* AkCallbackFunc)(AkCallbackType in_eType, AkCallbackInfo *in_pCallbackInfo)
Definition: AkCallback.h:267
AkGlobalCallbackLocation
AkGlobalCallbackLocation
Bit field of various locations in the audio processing loop where the game can be called back.
Definition: AkCallback.h:336
AkResourceMonitorDataSummary::totalCPU
AkReal32 totalCPU
Pourcentage of the cpu time used for processing audio. Please note that the numbers may add up when u...
Definition: AkCallback.h:246
AkSegmentInfo::iPostExitDuration
AkTimeMs iPostExitDuration
Duration of the post-exit region of the segment, in milliseconds.
Definition: AkCallback.h:220
AkGlobalCallbackLocation_PreProcessMessageQueueForRender
@ AkGlobalCallbackLocation_PreProcessMessageQueueForRender
Start of frame rendering, before having processed game messages.
Definition: AkCallback.h:341
AkMusicPlaylistCallbackInfo::uPlaylistItemDone
AkUInt32 uPlaylistItemDone
Playlist node done: set by sound engine, modified by callback function (if set to anything but 0 then...
Definition: AkCallback.h:211
AkSpeakerVolumeMatrixCallbackInfo::pfEmitterListenerVolume
AkReal32 * pfEmitterListenerVolume
Emitter-listener pair-specific gain. When there are multiple emitter-listener pairs,...
Definition: AkCallback.h:169
AK_CALLBACK
#define AK_CALLBACK(_type, _name)
Definition: AkSoundEngineExport.h:84
AK_EnableGetSourcePlayPosition
@ AK_EnableGetSourcePlayPosition
Enable play position information for use by AK::SoundEngine::GetSourcePlayPosition().
Definition: AkCallback.h:76
AkDurationCallbackInfo::fEstimatedDuration
AkReal32 fEstimatedDuration
Estimated duration of the sound depending on source settings such as pitch. (unit: milliseconds)
Definition: AkCallback.h:130
AkBusCallbackFunc
void(* AkBusCallbackFunc)(AkSpeakerVolumeMatrixCallbackInfo *in_pCallbackInfo)
Definition: AkCallback.h:277
AkDynamicSequenceItemCallbackInfo::audioNodeID
AkUniqueID audioNodeID
Audio Node ID of finished item
Definition: AkCallback.h:144
AkOutputDeviceMeteringCallbackInfo::uNumSystemAudioObjects
AkUInt32 uNumSystemAudioObjects
Number of System Audio Objects going out of the output device
Definition: AkCallback.h:191
AkMusicPlaylistCallbackInfo::playlistID
AkUniqueID playlistID
ID of playlist node
Definition: AkCallback.h:208
AkDynamicSequenceItemCallbackInfo::playingID
AkPlayingID playingID
Playing ID of Dynamic Sequence, returned by AK::SoundEngine:DynamicSequence::Open()
Definition: AkCallback.h:143
AkCallbackInfo::pCookie
void * pCookie
User data, passed to PostEvent()
Definition: AkCallback.h:87
AkOutputDeviceMeteringCallbackInfo::eMeteringFlags
AkMeteringFlags eMeteringFlags
Metering flags that were asked for in RegisterOutputDeviceMeteringCallback(). You may only access cor...
Definition: AkCallback.h:193
AK_EndOfDynamicSequenceItem
@ AK_EndOfDynamicSequenceItem
Callback triggered when reaching the end of a dynamic sequence item. AkCallbackInfo can be cast to Ak...
Definition: AkCallback.h:51
AkBankCallbackFunc
void(* AkBankCallbackFunc)(AkUInt32 in_bankID, const void *in_pInMemoryBankPtr, AKRESULT in_eLoadResult, void *in_pCookie)
Definition: AkCallback.h:327
AkBusMeteringCallbackInfo::channelConfig
AkChannelConfig channelConfig
Channel configuration of the bus.
Definition: AkCallback.h:179
AK_MusicPlaylistSelect
@ AK_MusicPlaylistSelect
Callback triggered when music playlist container must select the next item to play....
Definition: AkCallback.h:59
AK_MusicSyncExit
@ AK_MusicSyncExit
Enable notifications on Music Exit Cue. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
Definition: AkCallback.h:65
AkOutputDeviceMeteringCallbackInfo::ppSystemAudioObjectMetering
AK::IAkMetering ** ppSystemAudioObjectMetering
Metering information for each System Audio Object (number of elements is equal to uNumSystemAudioObje...
Definition: AkCallback.h:192
AK::SpeakerVolumes::MatrixPtr
AkReal32 * MatrixPtr
Volume matrix. Access each input channel vector with AK::SpeakerVolumes::Matrix::GetChannel().
Definition: AkSpeakerVolumes.h:50
AK_MusicSyncBeat
@ AK_MusicSyncBeat
Enable notifications on Music Beat. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
Definition: AkCallback.h:62
AkDurationCallbackInfo::bStreaming
bool bStreaming
True if source is streaming, false otherwise.
Definition: AkCallback.h:133
AkSegmentInfo::fBarDuration
AkReal32 fBarDuration
Bar Duration in seconds.
Definition: AkCallback.h:223
AK::AkAudioDeviceEvent
AkAudioDeviceEvent
Definition: AkCallback.h:383
AkUInt32
uint32_t AkUInt32
Unsigned 32-bit integer
Definition: AkTypes.h:59
AK_EnableGetMusicPlayPosition
@ AK_EnableGetMusicPlayPosition
Enable play position information of music objects, queried via AK::MusicEngine::GetPlayingSegmentInfo...
Definition: AkCallback.h:77
AK::AkDeviceStatusCallbackFunc
void(* AkDeviceStatusCallbackFunc)(AK::IAkGlobalPluginContext *in_pContext, AkUniqueID in_idAudioDeviceShareset, AkUInt32 in_idDeviceID, AkAudioDeviceEvent in_idEvent, AKRESULT in_AkResult)
Definition: AkCallback.h:391
AkBusMeteringCallbackInfo::pMetering
AK::IAkMetering * pMetering
AK::IAkMetering interface for retrieving metering information.
Definition: AkCallback.h:178
AkOutputDeviceID
AkUInt64 AkOutputDeviceID
Audio Output device ID
Definition: AkTypes.h:94
AK_MusicSyncPoint
@ AK_MusicSyncPoint
Enable notifications on Music switch transition synchronization point. AkCallbackInfo can be cast to ...
Definition: AkCallback.h:68
AkResourceMonitorDataSummary::pluginCPU
AkReal32 pluginCPU
Pourcentage of the cpu time used by plugin processing. Please note that the numbers may add up when u...
Definition: AkCallback.h:247
AkSegmentInfo::iCurrentPosition
AkTimeMs iCurrentPosition
Current position of the segment, relative to the Entry Cue, in milliseconds. Range is [-iPreEntryDura...
Definition: AkCallback.h:217
AkGlobalCallbackLocation_PostMessagesProcessed
@ AkGlobalCallbackLocation_PostMessagesProcessed
After one or more messages have been processed, but before updating game object and listener position...
Definition: AkCallback.h:342
AkMusicPlaylistCallbackInfo::uNumPlaylistItems
AkUInt32 uNumPlaylistItems
Number of items in playlist node (may be segments or other playlists)
Definition: AkCallback.h:209
AkSegmentInfo::fGridDuration
AkReal32 fGridDuration
Grid duration in seconds.
Definition: AkCallback.h:224
AkResourceMonitorDataSummary::totalVoices
AkUInt32 totalVoices
Number of active physical and virtual voices
Definition: AkCallback.h:250
AK_SpeakerVolumeMatrix
@ AK_SpeakerVolumeMatrix
Callback triggered at each frame, letting the client modify the speaker volume matrix....
Definition: AkCallback.h:55
AkSpeakerVolumeMatrixCallbackInfo::pVolumes
AK::SpeakerVolumes::MatrixPtr pVolumes
Pointer to volume matrix describing the contribution of each source channel to destination channels....
Definition: AkCallback.h:165
AkBusMeteringCallbackInfo::eMeteringFlags
AkMeteringFlags eMeteringFlags
Metering flags that were asked for in RegisterBusMeteringCallback(). You may only access correspondin...
Definition: AkCallback.h:180
AkResourceMonitorDataSummary::nbActiveEvents
AkUInt32 nbActiveEvents
Number of events triggered at a certain time
Definition: AkCallback.h:251
AkDurationCallbackInfo::mediaID
AkUniqueID mediaID
Media ID of playing item. (corresponds to 'ID' attribute of 'File' element in SoundBank metadata file...
Definition: AkCallback.h:132
AkMIDIEventCallbackInfo::midiEvent
AkMIDIEvent midiEvent
MIDI event triggered by event.
Definition: AkCallback.h:107
AkPlayingID
AkUInt32 AkPlayingID
Playing ID
Definition: AkTypes.h:65
AK_Marker
@ AK_Marker
Callback triggered when encountering a marker during playback. AkCallbackInfo can be cast to AkMarker...
Definition: AkCallback.h:52
AkSegmentInfo::iRemainingLookAheadTime
AkTimeMs iRemainingLookAheadTime
Number of milliseconds remaining in the "looking-ahead" state of the segment, when it is silent but s...
Definition: AkCallback.h:221
AkEventCallbackInfo::playingID
AkPlayingID playingID
Playing ID of Event, returned by PostEvent()
Definition: AkCallback.h:97
AK_MusicSyncUserCue
@ AK_MusicSyncUserCue
Enable notifications on Music Custom Cue. AkCallbackInfo can be cast to AkMusicSyncCallbackInfo.
Definition: AkCallback.h:67
AkGlobalCallbackLocation_BeginRender
@ AkGlobalCallbackLocation_BeginRender
Start of frame rendering, after having processed game messages.
Definition: AkCallback.h:343
AkResourceMonitorDataSummary::virtualVoices
AkUInt32 virtualVoices
Number of active virtual voices
Definition: AkCallback.h:249
AK_MusicPlayStarted
@ AK_MusicPlayStarted
Callback triggered when a "Play" or "Seek" command has been executed ("Seek" commands are issued from...
Definition: AkCallback.h:60
AkMusicSyncCallbackInfo::segmentInfo
AkSegmentInfo segmentInfo
Segment information corresponding to the segment triggering this callback.
Definition: AkCallback.h:238
AkGlobalCallbackLocation_Monitor
@ AkGlobalCallbackLocation_Monitor
Send monitor data
Definition: AkCallback.h:350

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