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Wwise SDK 2022.1.7
IAkStreamMgr.h
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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
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14 Alternatively, this file may be used under the Apache License, Version 2.0 (the
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26 
27 /// \file
28 /// Defines the API of Audiokinetic's I/O streaming solution.
29 
30 #ifndef _IAK_STREAM_MGR_H_
31 #define _IAK_STREAM_MGR_H_
32 
33 #include <AK/SoundEngine/Common/AkMemoryMgr.h>
34 
35 //-----------------------------------------------------------------------------
36 // Defines.
37 //-----------------------------------------------------------------------------
38 
39 /// \name Profiling string lengths.
40 //@{
41 #define AK_MONITOR_STREAMNAME_MAXLENGTH (64)
42 #define AK_MONITOR_DEVICENAME_MAXLENGTH (16)
43 //@}
44 
45 //-----------------------------------------------------------------------------
46 // Enums.
47 //-----------------------------------------------------------------------------
48 
49 /// Stream status.
50 enum AkStmStatus
51 {
52  AK_StmStatusIdle = 0, ///< The stream is idle
53  AK_StmStatusCompleted = 1, ///< Operation completed / Automatic stream reached end
54  AK_StmStatusPending = 2, ///< Operation pending / The stream is waiting for I/O
55  AK_StmStatusCancelled = 3, ///< Operation cancelled
56  AK_StmStatusError = 4 ///< The low-level I/O reported an error
57 };
58 
59 /// Move method for position change.
60 /// \sa
61 /// - AK::IAkStdStream::SetPosition()
62 /// - AK::IAkAutoStream::SetPosition()
63 enum AkMoveMethod
64 {
65  AK_MoveBegin = 0, ///< Move offset from the start of the stream
66  AK_MoveCurrent = 1, ///< Move offset from the current stream position
67  AK_MoveEnd = 2 ///< Move offset from the end of the stream
68 };
69 
70 /// File open mode.
71 enum AkOpenMode
72 {
73  AK_OpenModeRead = 0, ///< Read-only access
74  AK_OpenModeWrite = 1, ///< Write-only access (opens the file if it already exists)
75  AK_OpenModeWriteOvrwr = 2, ///< Write-only access (deletes the file if it already exists)
76  AK_OpenModeReadWrite = 3 ///< Read and write access
77 };
78 
79 /// File system flags for file descriptors mapping.
80 struct AkFileSystemFlags
81 {
82  AkFileSystemFlags()
83  : uCacheID( AK_INVALID_FILE_ID ), uDirectoryHash( AK_INVALID_UNIQUE_ID ) {}
84 
85  AkFileSystemFlags( AkUInt32 in_uCompanyID, AkUInt32 in_uCodecID, AkUInt32 in_uCustomParamSize, void * in_pCustomParam, bool in_bIsLanguageSpecific, AkFileID in_uCacheID )
86  : uCompanyID( in_uCompanyID )
87  , uCodecID( in_uCodecID )
88  , uCustomParamSize( in_uCustomParamSize )
89  , pCustomParam( in_pCustomParam )
90  , bIsLanguageSpecific( in_bIsLanguageSpecific )
91  , uCacheID( in_uCacheID )
92  , uNumBytesPrefetch( 0 )
93  , uDirectoryHash( AK_INVALID_UNIQUE_ID ) {}
94 
95  AkUInt32 uCompanyID; ///< Company ID (Wwise uses AKCOMPANYID_AUDIOKINETIC, defined in AkTypes.h, for soundbanks and standard streaming files, and AKCOMPANYID_AUDIOKINETIC_EXTERNAL for streaming external sources).
96  AkUInt32 uCodecID; ///< File/codec type ID (defined in AkTypes.h)
97  AkUInt32 uCustomParamSize; ///< Size of the custom parameter
98  void * pCustomParam; ///< Custom parameter
99  bool bIsLanguageSpecific;///< True when the file location depends on language
100  bool bIsAutomaticStream; ///< True when the file is opened to be used as an automatic stream. Note that you don't need to set it.
101  ///< If you pass an AkFileSystemFlags to IAkStreamMgr CreateStd|Auto(), it will be set internally to the correct value.
102  AkFileID uCacheID; ///< Cache ID for caching system used by automatic streams. The user is responsible for guaranteeing unicity of IDs.
103  ///< When set, it supersedes the file ID passed to AK::IAkStreamMgr::CreateAuto() (ID version). Caching is optional and depends on the implementation.
104  AkUInt32 uNumBytesPrefetch; ///< Indicates the number of bytes from the beginning of the file that should be streamed into cache via a caching stream. This field is only relevant when opening caching streams via
105  ///< AK::IAkStreamMgr::PinFileInCache() and AK::SoundEngine::PinEventInStreamCache(). When using AK::SoundEngine::PinEventInStreamCache(),
106  ///< it is initialized to the prefetch size stored in the sound bank, but may be changed by the file location resolver, or set to 0 to cancel caching.
107  AkUInt32 uDirectoryHash; ///< If the implementation uses a hashed directory structure, this is the hash value that should be employed for determining the directory structure
108 };
109 
110 /// Stream information.
111 /// \sa
112 /// - AK::IAkStdStream::GetInfo()
113 /// - AK::IAkAutoStream::GetInfo()
114 struct AkStreamInfo
115 {
116  AkDeviceID deviceID; ///< Device ID
117  const AkOSChar * pszName; ///< User-defined stream name (specified through AK::IAkStdStream::SetStreamName() or AK::IAkAutoStream::SetStreamName())
118  AkUInt64 uSize; ///< Total stream/file size in bytes
119  bool bIsOpen; ///< True when the file is open (implementations may defer file opening)
120 };
121 
122 /// Automatic streams heuristics.
123 struct AkAutoStmHeuristics
124 {
125  AkReal32 fThroughput; ///< Average throughput in bytes/ms
126  AkUInt32 uLoopStart; ///< Set to the start of loop (byte offset from the beginning of the stream) for streams that loop, 0 otherwise
127  AkUInt32 uLoopEnd; ///< Set to the end of loop (byte offset from the beginning of the stream) for streams that loop, 0 otherwise
128  AkUInt8 uMinNumBuffers; ///< Minimum number of buffers if you plan to own more than one buffer at a time, 0 or 1 otherwise
129  ///< \remarks You should always release buffers as fast as possible, therefore this heuristic should be used only when
130  ///< dealing with special contraints, like drivers or hardware that require more than one buffer at a time.\n
131  ///< Also, this is only a heuristic: it does not guarantee that data will be ready when calling AK::IAkAutoStream::GetBuffer().
132  AkPriority priority; ///< The stream priority. it should be between AK_MIN_PRIORITY and AK_MAX_PRIORITY (included).
133 };
134 
135 /// Automatic streams buffer settings/constraints.
136 struct AkAutoStmBufSettings
137 {
138  AkUInt32 uBufferSize; ///< Hard user constraint: When non-zero, forces the I/O buffer to be of size uBufferSize
139  ///< (overriding the device's granularity).
140  ///< Otherwise, the size is determined by the device's granularity.
141  AkUInt32 uMinBufferSize; ///< Soft user constraint: When non-zero, specifies a minimum buffer size
142  ///< \remarks Ignored if uBufferSize is specified.
143  AkUInt32 uBlockSize; ///< Hard user constraint: When non-zero, buffer size will be a multiple of that number, and returned addresses will always be aligned on multiples of this value.
144 };
145 
146 /// \name Profiling structures.
147 //@{
148 
149 #pragma pack(push, 4)
150 
151 /// Device descriptor.
152 struct AkDeviceDesc
153 {
154  AkDeviceID deviceID; ///< Device ID
155  bool bCanWrite; ///< Specifies whether or not the device is writable
156  bool bCanRead; ///< Specifies whether or not the device is readable
157  AkUtf16 szDeviceName[AK_MONITOR_DEVICENAME_MAXLENGTH]; ///< Device name
158  AkUInt32 uStringSize; ///< Device name string's size (number of characters)
159 };
160 
161 /// Device descriptor.
162 struct AkDeviceData
163 {
164  AkDeviceID deviceID; ///< Device ID
165  AkUInt32 uMemSize; ///< IO memory pool size
166  AkUInt32 uMemUsed; ///< IO memory pool used
167  AkUInt32 uAllocs; ///< Cumulative number of allocations
168  AkUInt32 uFrees; ///< Cumulative number of deallocations
169  AkUInt32 uPeakRefdMemUsed; ///< Memory peak since monitoring started
170  AkUInt32 uUnreferencedCachedBytes; ///< IO memory that is cached but is not currently used for active streams.
171  AkUInt32 uGranularity; ///< IO memory pool block size
172  AkUInt32 uNumActiveStreams; ///< Number of streams that have been active in the previous frame
173  AkUInt32 uTotalBytesTransferred; ///< Number of bytes transferred, including cached transfers
174  AkUInt32 uLowLevelBytesTransferred; ///< Number of bytes transferred exclusively via low-level
175  AkReal32 fAvgCacheEfficiency; ///< Total bytes from cache as a percentage of total bytes.
176  AkUInt32 uNumLowLevelRequestsCompleted; ///< Number of low-level transfers that have completed in the previous monitoring frame
177  AkUInt32 uNumLowLevelRequestsCancelled; ///< Number of low-level transfers that were cancelled in the previous monitoring frame
178  AkUInt32 uNumLowLevelRequestsPending; ///< Number of low-level transfers that are currently pending
179  AkUInt32 uCustomParam; ///< Custom number queried from low-level IO.
180  AkUInt32 uCachePinnedBytes; ///< Number of bytes that can be pinned into cache.
181 };
182 
183 /// Stream general information.
184 struct AkStreamRecord
185 {
186  AkUInt32 uStreamID; ///< Unique stream identifier
187  AkDeviceID deviceID; ///< Device ID
188  AkUtf16 szStreamName[AK_MONITOR_STREAMNAME_MAXLENGTH]; ///< Stream name
189  AkUInt32 uStringSize; ///< Stream name string's size (number of characters)
190  AkUInt64 uFileSize; ///< File size
191  AkUInt32 uCustomParamSize; ///< File descriptor's uCustomParamSize
192  AkUInt32 uCustomParam; ///< File descriptor's pCustomParam (on 32 bits)
193  bool bIsAutoStream; ///< True for auto streams
194  bool bIsCachingStream; ///< True for caching streams
195 };
196 
197 /// Stream statistics.
198 struct AkStreamData
199 {
200  AkUInt32 uStreamID; ///< Unique stream identifier
201  // Status (replace)
202  AkUInt32 uPriority; ///< Stream priority
203  AkUInt64 uFilePosition; ///< Current position
204  AkUInt32 uTargetBufferingSize; ///< Total stream buffer size (specific to IAkAutoStream)
205  AkUInt32 uVirtualBufferingSize; ///< Size of available data including requested data (specific to IAkAutoStream)
206  AkUInt32 uBufferedSize; ///< Size of available data (specific to IAkAutoStream)
207  AkUInt32 uNumBytesTransfered; ///< Transfered amount since last query (Accumulate/Reset)
208  AkUInt32 uNumBytesTransferedLowLevel;///< Transfered amount (from low-level IO only) since last query (Accumulate/Reset)
209  AkUInt32 uMemoryReferenced; ///< Amount of streaming memory referenced by this stream
210  AkReal32 fEstimatedThroughput; ///< Estimated throughput heuristic
211  bool bActive; ///< True if this stream has been active (that is, was ready for I/O or had at least one pending I/O transfer, uncached or not) in the previous frame
212 };
213 
214 #pragma pack(pop)
215 
216 //@}
217 
218 namespace AK
219 {
220  /// \name Profiling interfaces.
221  //@{
222 
223  /// Profiling interface of streams.
224  /// \akwarning
225  /// The functions in this interface are not thread-safe, unless stated otherwise.
226  /// \endakwarning
227  class IAkStreamProfile
228  {
229  protected:
230  /// Virtual destructor on interface to avoid warnings.
231  virtual ~IAkStreamProfile(){}
232 
233  public:
234  /// Returns the stream's record (once).
235  /// \sa
236  /// - \ref streamingdevicemanager
237  virtual void GetStreamRecord(
238  AkStreamRecord & out_streamRecord ///< Returned stream record interface
239  ) = 0;
240 
241  /// Returns the stream's statistics (every profile frame).
242  /// \sa
243  /// - \ref streamingdevicemanager
244  virtual void GetStreamData(
245  AkStreamData & out_streamData ///< Returned periodic stream data interface
246  ) = 0;
247 
248  /// Query the stream's "new" flag.
249  /// \return True, until AK::IAkStreamProfile::ClearNew() is called.
250  /// \sa
251  /// - \ref streamingdevicemanager
252  virtual bool IsNew() = 0;
253 
254  /// Resets the stream's "new" flag.
255  /// \sa
256  /// - \ref streamingdevicemanager
257  virtual void ClearNew() = 0;
258  };
259 
260 
261  /// Profiling interface of high-level I/O devices.
262  /// \akwarning
263  /// The functions in this interface are not thread-safe, unless stated otherwise.
264  /// \endakwarning
265  class IAkDeviceProfile
266  {
267  protected:
268  /// Virtual destructor on interface to avoid warnings.
269  virtual ~IAkDeviceProfile(){}
270 
271  public:
272 
273  /// Notify device when monitor sampling starts.
274  virtual void OnProfileStart() = 0;
275 
276  /// Notify device when monitor sampling ends.
277  virtual void OnProfileEnd() = 0;
278 
279  /// Query the device's description (once).
280  /// \sa
281  /// - \ref streamingdevicemanager
282  virtual void GetDesc(
283  AkDeviceDesc & out_deviceDesc ///< Device descriptor.
284  ) = 0;
285 
286  /// Query the device's statistics (at every profiling frame).
287  /// \sa
288  /// - \ref streamingdevicemanager
289  virtual void GetData(
290  AkDeviceData & out_deviceData ///< Device data.
291  ) = 0;
292 
293  /// Query the device's "new" flag.
294  /// \return True, until ClearNew() is called.
295  /// \sa
296  /// - \ref streamingdevicemanager
297  virtual bool IsNew() = 0;
298 
299  /// Resets the device's "new" flag.
300  /// \sa
301  /// - \ref streamingdevicemanager
302  virtual void ClearNew() = 0;
303 
304  /// Get the number of streams currently associated with that device.
305  /// \return The number of streams
306  /// \sa
307  /// - \ref streamingdevicemanager
308  virtual AkUInt32 GetNumStreams() = 0;
309 
310  /// Get a stream profile, for a specified stream index.
311  /// \remarks GetStreamProfile() refers to streams by index, which must honor the call to AK::IAkDeviceProfile::GetNumStreams().
312  /// \sa
313  /// - \ref streamingdevicemanager
314  virtual IAkStreamProfile * GetStreamProfile(
315  AkUInt32 in_uStreamIndex ///< Stream index: [0,numStreams[
316  ) = 0;
317  };
318 
319  /// Profiling interface of the Stream Manager.
320  /// \akwarning
321  /// The functions in this interface are not thread-safe, unless stated otherwise.
322  /// \endakwarning
323  class IAkStreamMgrProfile
324  {
325  protected:
326  /// Virtual destructor on interface to avoid warnings.
327  virtual ~IAkStreamMgrProfile(){}
328 
329  public:
330  /// Start profile monitoring.
331  /// \return AK_Success if successful, AK_Fail otherwise.
332  /// \sa
333  /// - \ref streamingdevicemanager
334  virtual AKRESULT StartMonitoring() = 0;
335 
336  /// Stop profile monitoring.
337  /// \sa
338  /// - \ref streamingdevicemanager
339  virtual void StopMonitoring() = 0;
340 
341  /// Device enumeration.
342  /// \return The number of devices.
343  /// \sa
344  /// - \ref streamingdevicemanager
345  virtual AkUInt32 GetNumDevices() = 0;
346 
347  /// Get a device profile for a specified device index.
348  /// \remarks GetDeviceProfile() refers to devices by index, which must honor the call to AK::IAkStreamMgrProfile::GetNumDevices().
349  /// \remarks The device index is not the same as the device ID (AkDeviceID).
350  /// \sa
351  /// - \ref streamingdevicemanager
352  virtual IAkDeviceProfile * GetDeviceProfile(
353  AkUInt32 in_uDeviceIndex ///< Device index: [0,numDevices[
354  ) = 0;
355  };
356  //@}
357 
358  /// \name High-level streams API.
359  //@{
360 
361  /// Interface of standard streams. Used as a handle to a standard stream. Has methods for
362  /// stream control. Obtained through the Stream Manager's AK::IAkStreamMgr::CreateStd() method.
363  /// \akwarning
364  /// The functions in this interface are not thread-safe, unless stated otherwise.
365  /// \endakwarning
366  class IAkStdStream
367  {
368  protected:
369  /// Virtual destructor on interface to avoid warnings.
370  virtual ~IAkStdStream(){}
371 
372  public:
373  /// \name Stream management and settings.
374  //@{
375  /// Close the stream. The object is destroyed and the interface becomes invalid.
376  /// \sa
377  /// - \ref streamingdevicemanager
378  virtual void Destroy() = 0;
379 
380  /// Get information about a stream.
381  /// \sa
382  /// - \ref streamingdevicemanager
383  virtual void GetInfo(
384  AkStreamInfo & out_info ///< Returned stream info
385  ) = 0;
386 
387  /// Returns a unique cookie for a given stream.
388  /// The default implementation of the Stream Manager returns its file descriptor (see AkStreamMgrModule.h).
389  virtual void * GetFileDescriptor() = 0;
390 
391  /// Give the stream a name (appears in the Wwise Profiler).
392  /// \sa
393  /// - \ref streamingdevicemanager
394  virtual AKRESULT SetStreamName(
395  const AkOSChar * in_pszStreamName ///< Stream name
396  ) = 0;
397 
398  /// Get the I/O block size.
399  /// \remark Queries the low-level I/O, by calling AK::StreamMgr::IAkLowLevelIOHook::GetBlockSize() with the
400  /// stream's file descriptor.
401  /// \return The block size, in bytes.
402  /// \sa
403  /// - \ref streamingdevicemanager
404  virtual AkUInt32 GetBlockSize() = 0;
405  //@}
406 
407  /// \name I/O operations.
408  //@{
409 
410  /// Schedule a read request.
411  /// \warning Use only with a multiple of the block size, queried via AK::IAkStdStream::GetBlockSize().
412  /// \remarks If the call is asynchronous (in_bWait = false), wait until AK::IAkStdStream::GetStatus() stops returning AK_StmStatusPending.
413  /// \return AK_Success if the operation was successfully scheduled (but not necessarily completed)
414  /// \sa
415  /// - \ref streamingdevicemanager
416  virtual AKRESULT Read(
417  void * in_pBuffer, ///< User buffer address
418  AkUInt32 in_uReqSize, ///< Requested read size
419  bool in_bWait, ///< Block until the operation is complete
420  AkPriority in_priority, ///< Heuristic: operation priority
421  AkReal32 in_fDeadline, ///< Heuristic: operation deadline (ms)
422  AkUInt32 & out_uSize ///< The size that was actually read
423  ) = 0;
424 
425  /// Schedule a write request.
426  /// \warning Use only with a multiple of the block size, queried via AK::IAkStdStream::GetBlockSize().
427  /// \remarks If the call is asynchronous (in_bWait = false), wait until GetStatus() stops returning AK_StmStatusPending.
428  /// \return AK_Success if the operation was successfully scheduled
429  /// \sa
430  /// - \ref streamingdevicemanager
431  virtual AKRESULT Write(
432  void * in_pBuffer, ///< User buffer address
433  AkUInt32 in_uReqSize, ///< Requested write size
434  bool in_bWait, ///< Block until the operation is complete
435  AkPriority in_priority, ///< Heuristic: operation priority
436  AkReal32 in_fDeadline, ///< Heuristic: operation deadline (ms)
437  AkUInt32 & out_uSize ///< The size that was actually written
438  ) = 0;
439 
440  /// Get the current stream position.
441  /// \remarks If an operation is pending, there is no guarantee that the position was queried before (or after) the operation was completed.
442  /// \return The current stream position
443  /// \sa
444  /// - \ref streamingdevicemanager
445  virtual AkUInt64 GetPosition(
446  bool * out_pbEndOfStream ///< Returned end-of-stream flag, only for streams opened with AK_OpenModeRead (can pass NULL)
447  ) = 0;
448 
449  /// Set the stream position. Modifies the position for the next read/write operation.
450  /// \warning No operation should be pending.
451  /// \remarks The new position will snap to the lowest block boundary.
452  /// \return AK_Success if the stream position was changed
453  /// \sa
454  /// - \ref streamingdevicemanager
455  virtual AKRESULT SetPosition(
456  AkInt64 in_iMoveOffset, ///< Seek offset
457  AkMoveMethod in_eMoveMethod, ///< Seek method, from the beginning, end, or current file position
458  AkInt64 * out_piRealOffset ///< The actual seek offset may differ from the expected value when the block size is bigger than 1.
459  ///< In that case, the seek offset floors to the sector boundary. Can pass NULL.
460  ) = 0;
461 
462  /// Cancel the current operation.
463  /// \remarks When it returns, the caller is guaranteed that no operation is pending.
464  /// \remarks This method can block the caller for the whole duration of the I/O operation, if the request was already posted.
465  /// \sa
466  /// - \ref streamingdevicemanager
467  virtual void Cancel() = 0;
468 
469  //@}
470 
471  /// \name Access to data and status.
472  //@{
473  /// Get user data (and accessed size).
474  /// \return The address of data provided by user
475  /// \sa
476  /// - \ref streamingdevicemanager
477  virtual void * GetData(
478  AkUInt32 & out_uSize ///< Size actually read or written
479  ) = 0;
480 
481  /// Get the stream's status.
482  /// \return The stream status.
483  /// \sa
484  /// - \ref streamingdevicemanager
485  virtual AkStmStatus GetStatus() = 0;
486 
487  /// Block and wait for a pending read to finish, and return the current status of the stream.
488  /// This will return immediately if the status is not pending.
489  /// \return The stream status.
490  /// \sa
491  /// - \ref streamingdevicemanager
492  virtual AkStmStatus WaitForPendingOperation() = 0;
493 
494  //@}
495  };
496 
497 
498  /// Interface of automatic streams. It is used as a handle to a stream,
499  /// I/O operations are triggered from here.
500  /// Obtained through the Stream Manager's AK::IAkStreamMgr::CreateAuto() method.
501  /// \akwarning
502  /// The functions in this interface are not thread-safe, unless stated otherwise.
503  /// \endakwarning
504  /// \sa
505  /// - \ref streamingdevicemanager
506  class IAkAutoStream
507  {
508  protected:
509  /// Virtual destructor on interface to avoid warnings.
510  virtual ~IAkAutoStream(){}
511 
512  public:
513  /// \name Stream management, settings access, and run-time change.
514  //@{
515  /// Close the stream. The object is destroyed and the interface becomes invalid.
516  /// \sa
517  /// - \ref streamingdevicemanager
518  virtual void Destroy() = 0;
519 
520  /// Get information about the stream.
521  /// \sa
522  /// - \ref streamingdevicemanager
523  virtual void GetInfo(
524  AkStreamInfo & out_info ///< Returned stream info
525  ) = 0;
526 
527  /// Returns a unique cookie for a given stream.
528  /// The default implementation of the Stream Manager returns its file descriptor (see AkStreamMgrModule.h).
529  virtual void * GetFileDescriptor() = 0;
530 
531  /// Get the stream's heuristics.
532  /// \sa
533  /// - \ref streamingdevicemanager
534  virtual void GetHeuristics(
535  AkAutoStmHeuristics & out_heuristics///< Returned stream heuristics
536  ) = 0;
537 
538  /// Run-time change of the stream's heuristics.
539  /// \sa
540  /// - \ref streamingdevicemanager
541  virtual AKRESULT SetHeuristics(
542  const AkAutoStmHeuristics & in_heuristics ///< New stream heuristics
543  ) = 0;
544 
545  /// Run-time change of the stream's minimum buffer size that can be handed out to client
546  /// in GetBuffer() (except the last buffer at the end of file).
547  /// Corresponds to the uMinBufferSize field of the AkAutoStmBufSettings passed to CreateAuto().
548  /// \sa
549  /// - AkAutoStmBufSettings
550  /// - \ref streamingdevicemanager
551  virtual AKRESULT SetMinimalBufferSize(
552  AkUInt32 in_uMinBufferSize ///< Minimum buffer size that can be handed out to client.
553  ) = 0;
554 
555  /// Set the minimum size to buffer ahead in an automated stream.
556  ///
557  /// This function was made available to allow systems that cannot only rely on AkAutoStmHeuristics::fThroughput to predict what will be the best target size of an automatic stream.
558  /// The system will predict the minimum size to buffer and will consider this value as the minimal size to be the target.
559  /// \sa
560  /// - AkAutoStmBufSettings
561  /// - \ref streamingdevicemanager
562  /// - \ref AkAutoStmHeuristics
563  virtual AKRESULT SetMinTargetBufferSize(
564  AkUInt32 in_uMinTargetBufferSize ///< Minimum size to buffer ahead in an automated stream. (in bytes)
565  ) = 0;
566 
567  /// Give the stream a name (appears in the Wwise profiler).
568  /// \sa
569  /// - \ref streamingdevicemanager
570  virtual AKRESULT SetStreamName(
571  const AkOSChar * in_pszStreamName ///< Stream name
572  ) = 0;
573 
574  /// Get the I/O block size.
575  /// \remark Queries the actual low-level I/O device, by calling AK::StreamMgr::IAkLowLevelIOHook::GetBlockSize() with the
576  /// stream's file descriptor.
577  /// \return The block size (in bytes)
578  /// \sa
579  /// - \ref streamingdevicemanager
580  virtual AkUInt32 GetBlockSize() = 0;
581 
582  /// Get the amount of buffering that the stream has.
583  /// The buffering is defined as the number of bytes that the stream has buffered, excluding the number
584  /// of bytes that is currently granted to the user (with GetBuffer()).
585  /// \remark The returned value corresponds to the buffering status at that moment, and does not even
586  /// guarantee that it will not shrink.
587  /// \return
588  /// - AK_DataReady: Some data has been buffered (out_uNumBytesAvailable is greater than 0).
589  /// - AK_NoDataReady: No data is available, and the end of file has not been reached.
590  /// - AK_NoMoreData: Some or no data is available, but the end of file has been reached. The stream will not buffer any more data.
591  /// - AK_Fail: The stream is invalid due to an I/O error.
592  virtual AKRESULT QueryBufferingStatus(
593  AkUInt32 & out_uNumBytesAvailable ///< Number of bytes available in the stream's buffer(s).
594  ) = 0;
595 
596  /// Returns the target buffering size based on the throughput heuristic.
597  /// \return
598  /// Target buffering length expressed in bytes.
599  virtual AkUInt32 GetNominalBuffering() = 0;
600 
601  //@}
602 
603  /// \name Stream operations.
604  //@{
605 
606  /// Start the automatic scheduling.
607  /// \return AK_Success if the automatic scheduling was started successfully
608  /// \sa
609  /// - \ref streamingdevicemanager
610  virtual AKRESULT Start() = 0;
611 
612  /// Stop the automatic scheduling.
613  /// \return AK_Success if the automatic scheduling was stopped successfully.
614  /// \sa
615  /// - \ref streamingdevicemanager
616  virtual AKRESULT Stop() = 0;
617 
618  /// Get the stream's position.
619  /// \remarks The stream position is the position seen by the user, not the position of the file
620  /// already streamed into the Stream Manager's memory. The stream position is updated when buffers
621  /// are released, using AK::IAkAutoStream::ReleaseBuffer().
622  /// \return The file position in bytes of the beginning of the first buffer owned by the user.
623  /// If the user does not own a buffer, it returns the position of the beginning of the buffer that
624  /// would be returned from a call to AK::IAkAutoStream::GetBuffer().
625  /// \sa
626  /// - \ref streamingdevicemanager
627  virtual AkUInt64 GetPosition(
628  bool * out_pbEndOfStream ///< Returned end-of-stream flag (can pass NULL)
629  ) = 0;
630 
631  /// Set the stream's position.
632  /// The next call to AK::IAkAutoStream::GetBuffer() will grant data that corresponds to the position specified here.
633  /// \remarks Data already streamed into the Stream Manager's memory might be flushed.
634  /// \remarks The new position will round down to the low-level I/O block size.
635  /// \return AK_Success if the resulting position is valid
636  /// \sa
637  /// - \ref streamingdevicemanager
638  virtual AKRESULT SetPosition(
639  AkInt64 in_iMoveOffset, ///< Seek offset
640  AkMoveMethod in_eMoveMethod, ///< Seek method, from the beginning, end or current file position
641  AkInt64 * out_piRealOffset ///< The actual seek offset may differ from the expected value when the low-level's block size is greater than 1.
642  ///< In that case, the real absolute position rounds down to the block boundary. Can pass NULL.
643  ) = 0;
644 
645  //@}
646 
647 
648  /// \name Data/status access.
649  //@{
650 
651  /// Get data from the Stream Manager buffers.
652  /// \remarks Grants a buffer if data is available. Each successful call to this method returns a new
653  /// buffer of data, at the current stream position.
654  /// Buffers should be released as soon as they are not needed, using AK::IAkAutoStream::ReleaseBuffer().
655  /// \aknote AK::IAkAutoStream::ReleaseBuffer() does not take any argument, because it releases buffers in order. \endaknote
656  /// \return
657  /// - AK_DataReady : the buffer was granted
658  /// - AK_NoDataReady : the buffer is not granted yet (never happens when called with in_bWait flag)
659  /// - AK_NoMoreData : the buffer was granted but reached end of file (next call will return with size 0)
660  /// - AK_Fail : there was an I/O error
661  /// \sa
662  /// - \ref streamingdevicemanager
663  virtual AKRESULT GetBuffer(
664  void *& out_pBuffer, ///< Returned address of granted data space
665  AkUInt32 & out_uSize, ///< Returned size of granted data space
666  bool in_bWait ///< Block until data is ready
667  ) = 0;
668 
669  /// Release buffer granted through GetBuffer(). Buffers are released in order.
670  /// \return AK_Success if a valid buffer was released, AK_Fail if the user did not own any buffer.
671  /// \note To implementers: Clients like the sound engine may release buffers until this function returns AK_Fail.
672  /// Failing to release a buffer should not be considered as a fatal error.
673  /// \sa
674  /// - \ref streamingdevicemanager
675  virtual AKRESULT ReleaseBuffer() = 0;
676  //@}
677  };
678 
679  //@}
680 
681 
682  /// Interface of the Stream Manager.
683  /// \akwarning
684  /// The functions in this interface are not thread-safe, unless stated otherwise.
685  /// \endakwarning
686  class IAkStreamMgr
687  {
688  protected:
689  /// Virtual destructor on interface to avoid warnings.
690  virtual ~IAkStreamMgr(){}
691 
692  public:
693  /// Global access to singleton.
694  /// \return The interface of the global Stream Manager
695  /// \sa
696  /// - \ref streamingdevicemanager
697  inline static IAkStreamMgr * Get()
698  {
699  return m_pStreamMgr;
700  }
701 
702  /// Destroy the Stream Manager.
703  /// \sa
704  /// - \ref streamingdevicemanager
705  virtual void Destroy() = 0;
706 
707 
708  /// \name Profiling.
709  //@{
710  /// Get the profiling interface.
711  /// \return The interface of the Stream Manager profiler
712  virtual IAkStreamMgrProfile * GetStreamMgrProfile() = 0;
713  //@}
714 
715 
716  /// \name Stream creation interface.
717  //@{
718 
719  // Standard stream creation methods.
720 
721  /// Create a standard stream (string overload).
722  /// \return AK_Success if the stream was created successfully
723  /// \remarks The string overload of AK::StreamMgr::IAkFileLocationResolver::Open() will be called.
724  /// \sa
725  /// - \ref streamingdevicemanager
726  virtual AKRESULT CreateStd(
727  const AkOSChar* in_pszFileName, ///< Application-defined string (title only, or full path, or code...)
728  AkFileSystemFlags * in_pFSFlags, ///< Special file system flags. Can pass NULL
729  AkOpenMode in_eOpenMode, ///< Open mode (read, write, ...)
730  IAkStdStream *& out_pStream, ///< Returned interface to a standard stream. If the function does not return AK_Success, this pointer is left untouched.
731  bool in_bSyncOpen ///< If true, force the Stream Manager to open file synchronously. Otherwise, it is left to its discretion.
732  ) = 0;
733 
734  /// Create a standard stream (ID overload).
735  /// \return AK_Success if the stream was created successfully
736  /// \remarks The ID overload of AK::StreamMgr::IAkFileLocationResolver::Open() will be called.
737  /// \sa
738  /// - \ref streamingdevicemanager
739  virtual AKRESULT CreateStd(
740  AkFileID in_fileID, ///< Application-defined ID
741  AkFileSystemFlags * in_pFSFlags, ///< Special file system flags (can pass NULL)
742  AkOpenMode in_eOpenMode, ///< Open mode (read, write, ...)
743  IAkStdStream *& out_pStream, ///< Returned interface to a standard stream. If the function does not return AK_Success, this pointer is left untouched.
744  bool in_bSyncOpen ///< If true, force the Stream Manager to open file synchronously. Otherwise, it is left to its discretion.
745  ) = 0;
746 
747 
748  // Automatic stream create methods.
749 
750  /// Create an automatic stream (string overload).
751  /// \return AK_Success if the stream was created successfully
752  /// \remarks The stream needs to be started explicitly with AK::IAkAutoStream::Start().
753  /// \remarks The string overload of AK::StreamMgr::IAkFileLocationResolver::Open() will be called.
754  /// \sa
755  /// - \ref streamingdevicemanager
756  virtual AKRESULT CreateAuto(
757  const AkOSChar* in_pszFileName, ///< Application-defined string (title only, or full path, or code...)
758  AkFileSystemFlags * in_pFSFlags, ///< Special file system flags (can pass NULL)
759  const AkAutoStmHeuristics & in_heuristics, ///< Streaming heuristics
760  AkAutoStmBufSettings * in_pBufferSettings, ///< Stream buffer settings (it is recommended to pass NULL in order to use the default settings)
761  IAkAutoStream *& out_pStream, ///< Returned interface to an automatic stream. If the function does not return AK_Success, this pointer is left untouched.
762  bool in_bSyncOpen ///< If true, force the Stream Manager to open file synchronously. Otherwise, it is left to its discretion.
763  ) = 0;
764 
765  /// Create an automatic stream (ID overload).
766  /// \return AK_Success if the stream was created successfully
767  /// \remarks The stream needs to be started explicitly with IAkAutoStream::Start().
768  /// \remarks The ID overload of AK::StreamMgr::IAkFileLocationResolver::Open() will be called.
769  /// \sa
770  /// - \ref streamingdevicemanager
771  virtual AKRESULT CreateAuto(
772  AkFileID in_fileID, ///< Application-defined ID
773  AkFileSystemFlags * in_pFSFlags, ///< Special file system flags (can pass NULL)
774  const AkAutoStmHeuristics & in_heuristics, ///< Streaming heuristics
775  AkAutoStmBufSettings * in_pBufferSettings, ///< Stream buffer settings (it is recommended to pass NULL to use the default settings)
776  IAkAutoStream *& out_pStream, ///< Returned interface to an automatic stream. If the function does not return AK_Success, this pointer is left untouched.
777  bool in_bSyncOpen ///< If true, force the Stream Manager to open file synchronously. Otherwise, it is left to its discretion.
778  ) = 0;
779 
780  /// Create an automatic stream (in-memory buffer overload).
781  ///
782  /// This overload differs largely from CreateAuto() implementations, which are file based.
783  /// This version is provided with a memory space and the resulting automatic stream will simply
784  /// return the memory space in a similar fashion, but without the need to perform any actual file operations.
785  ///
786  /// If you are in the process of implementing your own IAkStreamMgr object,
787  /// consider using the initial implementation from `\\SDK\\source\\StreamManager\\Common\\AkStreamMgr.cpp`.
788  ///
789  /// \return AK_Success if the stream was created successfully
790  /// \remarks The stream needs to be started explicitly with IAkAutoStream::Start().
791  /// \sa
792  /// - \ref streamingdevicemanager
793  virtual AKRESULT CreateAuto(
794  void * in_pBuffer, ///< Pointer to the memory area containing stream data
795  AkUInt64 in_uSize, ///< Size of the memory area containing stream data
796  const AkAutoStmHeuristics & in_heuristics, ///< Streaming heuristics
797  IAkAutoStream *& out_pStream ///< Returned interface to an automatic stream. If the function does not return AK_Success, this pointer is left untouched.
798  ) = 0;
799 
800  /// Start streaming the first "in_pFSFlags->uNumBytesPrefetch" bytes of the file with id "in_fileID" into cache. The stream will be scheduled only after
801  /// all regular streams (not file caching streams) are serviced. The file will stay cached until either the UnpinFileInCache is called,
802  /// or the limit as set by uMaxCachePinnedBytes is reached and another higher priority file (in_uPriority) needs the space.
803  /// \remarks PinFileInCache()/UnpinFileInCache()/UpdateCachingPriority() are typically not used directly, but instead used via the AK::SoundEngine::PinEventInStreamCache() API.
804  /// Using PinFileInCache() directly does not allow users to take advantage of sound bank data. The file and the number of bytes they wish to cache must be explicitly specified.
805  ///
806  /// \sa
807  /// - \ref streamingdevicemanager
808  /// - AK::SoundEngine::PinEventInStreamCache
809  /// - AK::SoundEngine::UnpinEventInStreamCache
810  /// - AkFileSystemFlags
811  virtual AKRESULT PinFileInCache(
812  AkFileID in_fileID, ///< Application-defined ID
813  AkFileSystemFlags * in_pFSFlags, ///< Special file system flags (can NOT pass NULL)
814  AkPriority in_uPriority ///< Stream caching priority. Note: Caching requests only get serviced after all regular streaming requests.
815  ) = 0;
816 
817  /// Un-pin a file that has been previouly pinned into cache. This function must be called once for every call to PinFileInCache() with the same file id.
818  /// The file may still remain in stream cache after this is called, until the memory is reused by the streaming memory manager in accordance with to its
819  /// cache management algorithm.
820  /// \remarks PinFileInCache()/UnpinFileInCache()/UpdateCachingPriority() are typically not used directly, but instead used via the AK::SoundEngine::PinEventInStreamCache() API.
821  /// Using UnpinFileInCache() directly does not allow users to take advantage of sound bank data. The file must be explicitly specified.
822  /// \sa
823  /// - \ref streamingdevicemanager
824  /// - AK::SoundEngine::PinEventInStreamCache
825  /// - AK::SoundEngine::UnpinEventInStreamCache
826  virtual AKRESULT UnpinFileInCache(
827  AkFileID in_fileID, ///< Application-defined ID
828  AkPriority in_uPriority ///< Priority of stream that you are unpinning
829  ) = 0;
830 
831  /// Update the priority of the caching stream. Higher priority streams will be serviced before lower priority caching streams, and will be more likely to stay in
832  /// memory if the cache pin limit as set by "uMaxCachePinnedBytes" is reached.
833  /// \remarks PinFileInCache()/UnpinFileInCache()/UpdateCachingPriority() are typically not used directly, but instead used via the AK::SoundEngine::PinEventInStreamCache() API.
834  /// Using UpdateCachingPriority() directly does not allow users to take advantage of sound bank data. The file must be explicitly specified.
835  /// \sa
836  /// - \ref streamingdevicemanager
837  /// - AK::SoundEngine::PinEventInStreamCache
838  /// - AK::SoundEngine::UnpinEventInStreamCache
839  virtual AKRESULT UpdateCachingPriority(
840  AkFileID in_fileID, ///< Application-defined ID
841  AkPriority in_uPriority, ///< Priority
842  AkPriority in_uOldPriority ///< Old priority
843  ) = 0;
844 
845  /// Return information about a file that has been pinned into cache.
846  /// Retrieves the percentage of the requested buffer size that has been streamed in and stored into stream cache, and whether
847  /// the cache pinned memory limit is preventing this buffer from filling.
848  virtual AKRESULT GetBufferStatusForPinnedFile(
849  AkFileID in_fileID, ///< Application-defined ID
850  AkReal32& out_fPercentBuffered, ///< Percentage of buffer full (out of 100)
851  bool& out_bCacheFull ///< Set to true if the rest of the buffer can not fit into the cache-pinned memory limit.
852  ) = 0;
853 
854  /// Make a memory stream point to a new area in memory, otherwise keeping the exact same state.
855  virtual AKRESULT RelocateMemoryStream(
856  IAkAutoStream * in_pStream, ///< The stream to relocate. Must be a stream created with the memory overload of CreateAutoStm.
857  AkUInt8 * in_pNewStart ///< The new area in memory to point to
858  ) = 0;
859 
860  //@}
861 
862  protected:
863  /// Definition of the global pointer to the interface of the Stream Manager singleton.
864  /// \sa
865  /// - \ref streamingdevicemanager
866  static AKSOUNDENGINE_API IAkStreamMgr * m_pStreamMgr;
867  };
868 
869 }
870 #endif //_IAK_STREAM_MGR_H_
AkFileSystemFlags::uNumBytesPrefetch
AkUInt32 uNumBytesPrefetch
Definition: IAkStreamMgr.h:104
AkStreamInfo::bIsOpen
bool bIsOpen
True when the file is open (implementations may defer file opening)
Definition: IAkStreamMgr.h:119
AkDeviceData::uCachePinnedBytes
AkUInt32 uCachePinnedBytes
Number of bytes that can be pinned into cache.
Definition: IAkStreamMgr.h:180
AkAutoStmHeuristics::uLoopStart
AkUInt32 uLoopStart
Set to the start of loop (byte offset from the beginning of the stream) for streams that loop,...
Definition: IAkStreamMgr.h:126
AK::IAkStreamMgr::Get
static IAkStreamMgr * Get()
Definition: IAkStreamMgr.h:697
AkStreamData::uBufferedSize
AkUInt32 uBufferedSize
Size of available data (specific to IAkAutoStream)
Definition: IAkStreamMgr.h:206
AK::IAkStdStream::GetData
virtual void * GetData(AkUInt32 &out_uSize)=0
AkFileSystemFlags::uDirectoryHash
AkUInt32 uDirectoryHash
If the implementation uses a hashed directory structure, this is the hash value that should be employ...
Definition: IAkStreamMgr.h:107
AK::IAkStreamMgr::GetStreamMgrProfile
virtual IAkStreamMgrProfile * GetStreamMgrProfile()=0
AK
Audiokinetic namespace.
Definition: AkWwiseSDKVersion.cs:31
AK_MONITOR_DEVICENAME_MAXLENGTH
#define AK_MONITOR_DEVICENAME_MAXLENGTH
Definition: IAkStreamMgr.h:42
AkStreamInfo::deviceID
AkDeviceID deviceID
Device ID.
Definition: IAkStreamMgr.h:116
AK::IAkStreamProfile::IsNew
virtual bool IsNew()=0
AkStreamRecord::uFileSize
AkUInt64 uFileSize
File size.
Definition: IAkStreamMgr.h:190
AK::IAkAutoStream::SetMinimalBufferSize
virtual AKRESULT SetMinimalBufferSize(AkUInt32 in_uMinBufferSize)=0
AK::IAkAutoStream::GetPosition
virtual AkUInt64 GetPosition(bool *out_pbEndOfStream)=0
AkDeviceDesc::bCanRead
bool bCanRead
Specifies whether or not the device is readable.
Definition: IAkStreamMgr.h:156
AkAutoStmBufSettings
Automatic streams buffer settings/constraints.
Definition: IAkStreamMgr.h:137
AkStreamData::uPriority
AkUInt32 uPriority
Stream priority.
Definition: IAkStreamMgr.h:202
AK::IAkStdStream::GetFileDescriptor
virtual void * GetFileDescriptor()=0
AK::IAkStreamMgrProfile::GetDeviceProfile
virtual IAkDeviceProfile * GetDeviceProfile(AkUInt32 in_uDeviceIndex)=0
AkStreamData::uVirtualBufferingSize
AkUInt32 uVirtualBufferingSize
Size of available data including requested data (specific to IAkAutoStream)
Definition: IAkStreamMgr.h:205
AK::IAkAutoStream::ReleaseBuffer
virtual AKRESULT ReleaseBuffer()=0
AkAutoStmHeuristics::uLoopEnd
AkUInt32 uLoopEnd
Set to the end of loop (byte offset from the beginning of the stream) for streams that loop,...
Definition: IAkStreamMgr.h:127
AkDeviceData::uPeakRefdMemUsed
AkUInt32 uPeakRefdMemUsed
Memory peak since monitoring started.
Definition: IAkStreamMgr.h:169
AK::IAkStreamMgr::~IAkStreamMgr
virtual ~IAkStreamMgr()
Virtual destructor on interface to avoid warnings.
Definition: IAkStreamMgr.h:690
AK_OpenModeWriteOvrwr
@ AK_OpenModeWriteOvrwr
Write-only access (deletes the file if it already exists)
Definition: IAkStreamMgr.h:75
AK::IAkAutoStream::GetInfo
virtual void GetInfo(AkStreamInfo &out_info)=0
AK::IAkStdStream::GetBlockSize
virtual AkUInt32 GetBlockSize()=0
AK::IAkStdStream::SetPosition
virtual AKRESULT SetPosition(AkInt64 in_iMoveOffset, AkMoveMethod in_eMoveMethod, AkInt64 *out_piRealOffset)=0
AKRESULT
AKRESULT
Standard function call result.
Definition: AkTypes.h:199
AkDeviceID
AkUInt32 AkDeviceID
I/O device ID.
Definition: AkTypes.h:146
AK::IAkDeviceProfile::GetNumStreams
virtual AkUInt32 GetNumStreams()=0
AK_OpenModeReadWrite
@ AK_OpenModeReadWrite
Read and write access.
Definition: IAkStreamMgr.h:76
AkStreamData::uNumBytesTransferedLowLevel
AkUInt32 uNumBytesTransferedLowLevel
Transfered amount (from low-level IO only) since last query (Accumulate/Reset)
Definition: IAkStreamMgr.h:208
AK::IAkStreamProfile::GetStreamData
virtual void GetStreamData(AkStreamData &out_streamData)=0
AK_OpenModeRead
@ AK_OpenModeRead
Read-only access.
Definition: IAkStreamMgr.h:73
AkAutoStmBufSettings::uBlockSize
AkUInt32 uBlockSize
Hard user constraint: When non-zero, buffer size will be a multiple of that number,...
Definition: IAkStreamMgr.h:143
AK::IAkAutoStream::Stop
virtual AKRESULT Stop()=0
AkStreamRecord::bIsAutoStream
bool bIsAutoStream
True for auto streams.
Definition: IAkStreamMgr.h:193
AkAutoStmBufSettings::uMinBufferSize
AkUInt32 uMinBufferSize
Definition: IAkStreamMgr.h:141
AkAutoStmBufSettings::uBufferSize
AkUInt32 uBufferSize
Definition: IAkStreamMgr.h:138
AkDeviceData::uLowLevelBytesTransferred
AkUInt32 uLowLevelBytesTransferred
Number of bytes transferred exclusively via low-level.
Definition: IAkStreamMgr.h:174
AK::IAkDeviceProfile::OnProfileEnd
virtual void OnProfileEnd()=0
Notify device when monitor sampling ends.
AK::IAkAutoStream::SetMinTargetBufferSize
virtual AKRESULT SetMinTargetBufferSize(AkUInt32 in_uMinTargetBufferSize)=0
AkOSChar
char AkOSChar
Generic character string.
Definition: AkTypes.h:60
AkUInt8
uint8_t AkUInt8
Unsigned 8-bit integer.
Definition: AkNumeralTypes.h:36
AK::IAkAutoStream::GetNominalBuffering
virtual AkUInt32 GetNominalBuffering()=0
AK_MoveEnd
@ AK_MoveEnd
Move offset from the end of the stream.
Definition: IAkStreamMgr.h:67
AK::IAkAutoStream::GetBlockSize
virtual AkUInt32 GetBlockSize()=0
AK::IAkStdStream::GetStatus
virtual AkStmStatus GetStatus()=0
AK::IAkStdStream::Read
virtual AKRESULT Read(void *in_pBuffer, AkUInt32 in_uReqSize, bool in_bWait, AkPriority in_priority, AkReal32 in_fDeadline, AkUInt32 &out_uSize)=0
AK_MoveBegin
@ AK_MoveBegin
Move offset from the start of the stream.
Definition: IAkStreamMgr.h:65
AK::IAkStreamMgr::CreateAuto
virtual AKRESULT CreateAuto(AkFileID in_fileID, AkFileSystemFlags *in_pFSFlags, const AkAutoStmHeuristics &in_heuristics, AkAutoStmBufSettings *in_pBufferSettings, IAkAutoStream *&out_pStream, bool in_bSyncOpen)=0
AkReal32
float AkReal32
32-bit floating point
Definition: AkNumeralTypes.h:46
AkStreamData::uStreamID
AkUInt32 uStreamID
Unique stream identifier.
Definition: IAkStreamMgr.h:200
AK::IAkDeviceProfile::OnProfileStart
virtual void OnProfileStart()=0
Notify device when monitor sampling starts.
AkStreamData
Stream statistics.
Definition: IAkStreamMgr.h:199
AkFileSystemFlags::uCompanyID
AkUInt32 uCompanyID
Company ID (Wwise uses AKCOMPANYID_AUDIOKINETIC, defined in AkTypes.h, for soundbanks and standard st...
Definition: IAkStreamMgr.h:95
AkDeviceDesc::uStringSize
AkUInt32 uStringSize
Device name string's size (number of characters)
Definition: IAkStreamMgr.h:158
AkUtf16
AkUInt16 AkUtf16
Definition: AkTypes.h:61
AK_StmStatusIdle
@ AK_StmStatusIdle
The stream is idle.
Definition: IAkStreamMgr.h:52
AkFileID
AkUInt32 AkFileID
Integer-type file identifier.
Definition: AkTypes.h:145
AK::IAkAutoStream::SetStreamName
virtual AKRESULT SetStreamName(const AkOSChar *in_pszStreamName)=0
AK::IAkDeviceProfile::GetData
virtual void GetData(AkDeviceData &out_deviceData)=0
AK::IAkStreamProfile::ClearNew
virtual void ClearNew()=0
AkDeviceData
Device descriptor.
Definition: IAkStreamMgr.h:163
AK::IAkStreamMgrProfile::~IAkStreamMgrProfile
virtual ~IAkStreamMgrProfile()
Virtual destructor on interface to avoid warnings.
Definition: IAkStreamMgr.h:327
AK::IAkStreamMgrProfile::StopMonitoring
virtual void StopMonitoring()=0
AK::IAkAutoStream::SetHeuristics
virtual AKRESULT SetHeuristics(const AkAutoStmHeuristics &in_heuristics)=0
AKSOUNDENGINE_API
#define AKSOUNDENGINE_API
Definition: AkSoundEngineExport.h:58
AkFileSystemFlags::bIsAutomaticStream
bool bIsAutomaticStream
Definition: IAkStreamMgr.h:100
AkStreamData::uTargetBufferingSize
AkUInt32 uTargetBufferingSize
Total stream buffer size (specific to IAkAutoStream)
Definition: IAkStreamMgr.h:204
AkAutoStmHeuristics::fThroughput
AkReal32 fThroughput
Average throughput in bytes/ms.
Definition: IAkStreamMgr.h:125
AK::IAkAutoStream::SetPosition
virtual AKRESULT SetPosition(AkInt64 in_iMoveOffset, AkMoveMethod in_eMoveMethod, AkInt64 *out_piRealOffset)=0
AK::IAkStdStream::SetStreamName
virtual AKRESULT SetStreamName(const AkOSChar *in_pszStreamName)=0
AkDeviceData::uGranularity
AkUInt32 uGranularity
IO memory pool block size.
Definition: IAkStreamMgr.h:171
AkDeviceData::uFrees
AkUInt32 uFrees
Cumulative number of deallocations.
Definition: IAkStreamMgr.h:168
AK::IAkStdStream::WaitForPendingOperation
virtual AkStmStatus WaitForPendingOperation()=0
AkDeviceData::uNumLowLevelRequestsCancelled
AkUInt32 uNumLowLevelRequestsCancelled
Number of low-level transfers that were cancelled in the previous monitoring frame.
Definition: IAkStreamMgr.h:177
AkFileSystemFlags::bIsLanguageSpecific
bool bIsLanguageSpecific
True when the file location depends on language.
Definition: IAkStreamMgr.h:99
AK::IAkStreamMgr::CreateAuto
virtual AKRESULT CreateAuto(void *in_pBuffer, AkUInt64 in_uSize, const AkAutoStmHeuristics &in_heuristics, IAkAutoStream *&out_pStream)=0
AK::IAkStreamMgr::CreateAuto
virtual AKRESULT CreateAuto(const AkOSChar *in_pszFileName, AkFileSystemFlags *in_pFSFlags, const AkAutoStmHeuristics &in_heuristics, AkAutoStmBufSettings *in_pBufferSettings, IAkAutoStream *&out_pStream, bool in_bSyncOpen)=0
AkStreamRecord::uCustomParamSize
AkUInt32 uCustomParamSize
File descriptor's uCustomParamSize.
Definition: IAkStreamMgr.h:191
AkStreamData::bActive
bool bActive
True if this stream has been active (that is, was ready for I/O or had at least one pending I/O trans...
Definition: IAkStreamMgr.h:211
AkDeviceData::uMemUsed
AkUInt32 uMemUsed
IO memory pool used.
Definition: IAkStreamMgr.h:166
AK_MoveCurrent
@ AK_MoveCurrent
Move offset from the current stream position.
Definition: IAkStreamMgr.h:66
AK::IAkStreamMgr::Destroy
virtual void Destroy()=0
AkStreamRecord::uStreamID
AkUInt32 uStreamID
Unique stream identifier.
Definition: IAkStreamMgr.h:186
AK_StmStatusPending
@ AK_StmStatusPending
Operation pending / The stream is waiting for I/O.
Definition: IAkStreamMgr.h:54
AK::IAkDeviceProfile::~IAkDeviceProfile
virtual ~IAkDeviceProfile()
Virtual destructor on interface to avoid warnings.
Definition: IAkStreamMgr.h:269
AkStreamRecord
Stream general information.
Definition: IAkStreamMgr.h:185
AK::IAkStreamMgr::RelocateMemoryStream
virtual AKRESULT RelocateMemoryStream(IAkAutoStream *in_pStream, AkUInt8 *in_pNewStart)=0
Make a memory stream point to a new area in memory, otherwise keeping the exact same state.
AkPriority
AkInt8 AkPriority
Priority.
Definition: AkTypes.h:135
AK::IAkStreamMgrProfile::StartMonitoring
virtual AKRESULT StartMonitoring()=0
AkDeviceDesc::deviceID
AkDeviceID deviceID
Device ID.
Definition: IAkStreamMgr.h:154
AkDeviceData::uNumActiveStreams
AkUInt32 uNumActiveStreams
Number of streams that have been active in the previous frame.
Definition: IAkStreamMgr.h:172
AkStreamRecord::uCustomParam
AkUInt32 uCustomParam
File descriptor's pCustomParam (on 32 bits)
Definition: IAkStreamMgr.h:192
AK::IAkAutoStream::QueryBufferingStatus
virtual AKRESULT QueryBufferingStatus(AkUInt32 &out_uNumBytesAvailable)=0
AkStreamInfo::pszName
const AkOSChar * pszName
User-defined stream name (specified through AK::IAkStdStream::SetStreamName() or AK::IAkAutoStream::S...
Definition: IAkStreamMgr.h:117
AkDeviceData::uCustomParam
AkUInt32 uCustomParam
Custom number queried from low-level IO.
Definition: IAkStreamMgr.h:179
AK::IAkStdStream::~IAkStdStream
virtual ~IAkStdStream()
Virtual destructor on interface to avoid warnings.
Definition: IAkStreamMgr.h:370
AkDeviceData::uTotalBytesTransferred
AkUInt32 uTotalBytesTransferred
Number of bytes transferred, including cached transfers.
Definition: IAkStreamMgr.h:173
AK::IAkStdStream::GetInfo
virtual void GetInfo(AkStreamInfo &out_info)=0
AK::IAkStreamMgr::PinFileInCache
virtual AKRESULT PinFileInCache(AkFileID in_fileID, AkFileSystemFlags *in_pFSFlags, AkPriority in_uPriority)=0
AkDeviceData::uUnreferencedCachedBytes
AkUInt32 uUnreferencedCachedBytes
IO memory that is cached but is not currently used for active streams.
Definition: IAkStreamMgr.h:170
AK::IAkStreamMgr::CreateStd
virtual AKRESULT CreateStd(const AkOSChar *in_pszFileName, AkFileSystemFlags *in_pFSFlags, AkOpenMode in_eOpenMode, IAkStdStream *&out_pStream, bool in_bSyncOpen)=0
AkFileSystemFlags::AkFileSystemFlags
AkFileSystemFlags(AkUInt32 in_uCompanyID, AkUInt32 in_uCodecID, AkUInt32 in_uCustomParamSize, void *in_pCustomParam, bool in_bIsLanguageSpecific, AkFileID in_uCacheID)
Definition: IAkStreamMgr.h:85
AkStreamRecord::deviceID
AkDeviceID deviceID
Device ID.
Definition: IAkStreamMgr.h:187
AK::IAkStdStream::Destroy
virtual void Destroy()=0
AK::IAkDeviceProfile::GetStreamProfile
virtual IAkStreamProfile * GetStreamProfile(AkUInt32 in_uStreamIndex)=0
AK::IAkAutoStream::GetBuffer
virtual AKRESULT GetBuffer(void *&out_pBuffer, AkUInt32 &out_uSize, bool in_bWait)=0
AkStreamData::fEstimatedThroughput
AkReal32 fEstimatedThroughput
Estimated throughput heuristic.
Definition: IAkStreamMgr.h:210
AK::IAkAutoStream::GetHeuristics
virtual void GetHeuristics(AkAutoStmHeuristics &out_heuristics)=0
AkDeviceData::uAllocs
AkUInt32 uAllocs
Cumulative number of allocations.
Definition: IAkStreamMgr.h:167
AK::IAkStreamMgr::CreateStd
virtual AKRESULT CreateStd(AkFileID in_fileID, AkFileSystemFlags *in_pFSFlags, AkOpenMode in_eOpenMode, IAkStdStream *&out_pStream, bool in_bSyncOpen)=0
AkFileSystemFlags
File system flags for file descriptors mapping.
Definition: IAkStreamMgr.h:81
AkMoveMethod
AkMoveMethod
Definition: IAkStreamMgr.h:64
AK_INVALID_UNIQUE_ID
static const AkUniqueID AK_INVALID_UNIQUE_ID
Invalid unique 32-bit ID.
Definition: AkTypes.h:163
AkDeviceData::uMemSize
AkUInt32 uMemSize
IO memory pool size.
Definition: IAkStreamMgr.h:165
AkDeviceData::uNumLowLevelRequestsPending
AkUInt32 uNumLowLevelRequestsPending
Number of low-level transfers that are currently pending.
Definition: IAkStreamMgr.h:178
AkInt64
int64_t AkInt64
Signed 64-bit integer.
Definition: AkNumeralTypes.h:44
AkFileSystemFlags::uCacheID
AkFileID uCacheID
Definition: IAkStreamMgr.h:102
AK_OpenModeWrite
@ AK_OpenModeWrite
Write-only access (opens the file if it already exists)
Definition: IAkStreamMgr.h:74
AkUInt64
uint64_t AkUInt64
Unsigned 64-bit integer.
Definition: AkNumeralTypes.h:39
AK_StmStatusCompleted
@ AK_StmStatusCompleted
Operation completed / Automatic stream reached end.
Definition: IAkStreamMgr.h:53
AkStreamData::uNumBytesTransfered
AkUInt32 uNumBytesTransfered
Transfered amount since last query (Accumulate/Reset)
Definition: IAkStreamMgr.h:207
AK::IAkDeviceProfile::GetDesc
virtual void GetDesc(AkDeviceDesc &out_deviceDesc)=0
AkStmStatus
AkStmStatus
Stream status.
Definition: IAkStreamMgr.h:51
AkDeviceDesc::bCanWrite
bool bCanWrite
Specifies whether or not the device is writable.
Definition: IAkStreamMgr.h:155
AkOpenMode
AkOpenMode
File open mode.
Definition: IAkStreamMgr.h:72
AkDeviceDesc
Device descriptor.
Definition: IAkStreamMgr.h:153
AkDeviceData::uNumLowLevelRequestsCompleted
AkUInt32 uNumLowLevelRequestsCompleted
Number of low-level transfers that have completed in the previous monitoring frame.
Definition: IAkStreamMgr.h:176
AkStreamInfo::uSize
AkUInt64 uSize
Total stream/file size in bytes.
Definition: IAkStreamMgr.h:118
AK::IAkAutoStream::~IAkAutoStream
virtual ~IAkAutoStream()
Virtual destructor on interface to avoid warnings.
Definition: IAkStreamMgr.h:510
AK::IAkAutoStream::Start
virtual AKRESULT Start()=0
AkDeviceData::fAvgCacheEfficiency
AkReal32 fAvgCacheEfficiency
Total bytes from cache as a percentage of total bytes.
Definition: IAkStreamMgr.h:175
AkUInt32
uint32_t AkUInt32
Unsigned 32-bit integer.
Definition: AkNumeralTypes.h:38
AK_INVALID_FILE_ID
static const AkFileID AK_INVALID_FILE_ID
Invalid file ID.
Definition: AkTypes.h:170
AkDeviceData::deviceID
AkDeviceID deviceID
Device ID.
Definition: IAkStreamMgr.h:164
AK::IAkStreamProfile::~IAkStreamProfile
virtual ~IAkStreamProfile()
Virtual destructor on interface to avoid warnings.
Definition: IAkStreamMgr.h:231
AK_StmStatusError
@ AK_StmStatusError
The low-level I/O reported an error.
Definition: IAkStreamMgr.h:56
AkStreamRecord::szStreamName
AkUtf16 szStreamName[AK_MONITOR_STREAMNAME_MAXLENGTH]
Stream name.
Definition: IAkStreamMgr.h:188
AK::IAkAutoStream::Destroy
virtual void Destroy()=0
AkStreamRecord::uStringSize
AkUInt32 uStringSize
Stream name string's size (number of characters)
Definition: IAkStreamMgr.h:189
AK::IAkStreamMgrProfile::GetNumDevices
virtual AkUInt32 GetNumDevices()=0
AkFileSystemFlags::uCustomParamSize
AkUInt32 uCustomParamSize
Size of the custom parameter.
Definition: IAkStreamMgr.h:97
AkAutoStmHeuristics::priority
AkPriority priority
The stream priority. it should be between AK_MIN_PRIORITY and AK_MAX_PRIORITY (included).
Definition: IAkStreamMgr.h:132
AK::IAkStdStream::Cancel
virtual void Cancel()=0
AkStreamData::uMemoryReferenced
AkUInt32 uMemoryReferenced
Amount of streaming memory referenced by this stream.
Definition: IAkStreamMgr.h:209
AK::IAkStdStream::Write
virtual AKRESULT Write(void *in_pBuffer, AkUInt32 in_uReqSize, bool in_bWait, AkPriority in_priority, AkReal32 in_fDeadline, AkUInt32 &out_uSize)=0
AkAutoStmHeuristics::uMinNumBuffers
AkUInt8 uMinNumBuffers
Definition: IAkStreamMgr.h:128
AkAutoStmHeuristics
Automatic streams heuristics.
Definition: IAkStreamMgr.h:124
AK::IAkStreamMgr::UnpinFileInCache
virtual AKRESULT UnpinFileInCache(AkFileID in_fileID, AkPriority in_uPriority)=0
AkStreamRecord::bIsCachingStream
bool bIsCachingStream
True for caching streams.
Definition: IAkStreamMgr.h:194
AK::IAkStreamMgr::m_pStreamMgr
static IAkStreamMgr * m_pStreamMgr
Definition: IAkStreamMgr.h:866
AK::IAkStreamProfile::GetStreamRecord
virtual void GetStreamRecord(AkStreamRecord &out_streamRecord)=0
AkDeviceDesc::szDeviceName
AkUtf16 szDeviceName[AK_MONITOR_DEVICENAME_MAXLENGTH]
Device name.
Definition: IAkStreamMgr.h:157
AK_MONITOR_STREAMNAME_MAXLENGTH
#define AK_MONITOR_STREAMNAME_MAXLENGTH
Definition: IAkStreamMgr.h:41
AK::IAkDeviceProfile::IsNew
virtual bool IsNew()=0
AK::IAkStreamMgr::GetBufferStatusForPinnedFile
virtual AKRESULT GetBufferStatusForPinnedFile(AkFileID in_fileID, AkReal32 &out_fPercentBuffered, bool &out_bCacheFull)=0
AK::IAkStreamMgr::UpdateCachingPriority
virtual AKRESULT UpdateCachingPriority(AkFileID in_fileID, AkPriority in_uPriority, AkPriority in_uOldPriority)=0
AK::IAkAutoStream::GetFileDescriptor
virtual void * GetFileDescriptor()=0
AkStreamData::uFilePosition
AkUInt64 uFilePosition
Current position.
Definition: IAkStreamMgr.h:203
AK::IAkStdStream::GetPosition
virtual AkUInt64 GetPosition(bool *out_pbEndOfStream)=0
AK::IAkDeviceProfile::ClearNew
virtual void ClearNew()=0
AkFileSystemFlags::uCodecID
AkUInt32 uCodecID
File/codec type ID (defined in AkTypes.h)
Definition: IAkStreamMgr.h:96
AkFileSystemFlags::pCustomParam
void * pCustomParam
Custom parameter.
Definition: IAkStreamMgr.h:98
AK_StmStatusCancelled
@ AK_StmStatusCancelled
Operation cancelled.
Definition: IAkStreamMgr.h:55

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