apple.soundanalysis

Class SNAudioStreamAnalyzer

java.lang.Object

org.moe.natj.general.NativeObject

org.moe.natj.objc.ObjCObject

apple.NSObject

apple.soundanalysis.SNAudioStreamAnalyzer

All Implemented Interfaces:

NSObject

public class SNAudioStreamAnalyzer
extends NSObject

Analyzes a stream of audio data and provides analysis results to the client

SNAudioStreamAnalyzer should be used to analyze a stream of audio, represented by a sequence of audio buffers over time.

Nested Class Summary

Nested classes/interfaces inherited from class apple.NSObject

NSObject.Function_instanceMethodForSelector_ret, NSObject.Function_methodForSelector_ret

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SNAudioStreamAnalyzer(org.moe.natj.general.Pointer peer)

Method Summary

Modifier and Type	Method and Description
static boolean	accessInstanceVariablesDirectly()
boolean	addRequestWithObserverError(SNRequest request, SNResultsObserving observer, org.moe.natj.general.ptr.Ptr<NSError> error) Adds a new analysis request to the analyzer
static SNAudioStreamAnalyzer	alloc()
static SNAudioStreamAnalyzer	allocWithZone(org.moe.natj.general.ptr.VoidPtr zone)
void	analyzeAudioBufferAtAudioFramePosition(AVAudioBuffer audioBuffer, long audioFramePosition) Provides the next buffer for analysis
static boolean	automaticallyNotifiesObserversForKey(java.lang.String key)
static void	cancelPreviousPerformRequestsWithTarget(java.lang.Object aTarget)
static void	cancelPreviousPerformRequestsWithTargetSelectorObject(java.lang.Object aTarget, org.moe.natj.objc.SEL aSelector, java.lang.Object anArgument)
static NSArray<java.lang.String>	classFallbacksForKeyedArchiver()
static org.moe.natj.objc.Class	classForKeyedUnarchiver()
void	completeAnalysis() Indicates that the audio stream has ended, and no more audio buffers will be analyzed
static java.lang.String	debugDescription_static()
static java.lang.String	description_static()
static long	hash_static()
SNAudioStreamAnalyzer	init()
SNAudioStreamAnalyzer	initWithFormat(AVAudioFormat format) Creates a new analyzer
static NSObject.Function_instanceMethodForSelector_ret	instanceMethodForSelector(org.moe.natj.objc.SEL aSelector)
static NSMethodSignature	instanceMethodSignatureForSelector(org.moe.natj.objc.SEL aSelector)
static boolean	instancesRespondToSelector(org.moe.natj.objc.SEL aSelector)
static boolean	isSubclassOfClass(org.moe.natj.objc.Class aClass)
static NSSet<java.lang.String>	keyPathsForValuesAffectingValueForKey(java.lang.String key)
static SNAudioStreamAnalyzer	new_objc()
void	removeAllRequests() Removes all requests from the analyzer
void	removeRequest(SNRequest request) Removes an existing analysis request from the analyzer
static boolean	resolveClassMethod(org.moe.natj.objc.SEL sel)
static boolean	resolveInstanceMethod(org.moe.natj.objc.SEL sel)
static void	setVersion_static(long aVersion)
static org.moe.natj.objc.Class	superclass_static()
static long	version_static()

Methods inherited from class apple.NSObject

accessibilityActivate, accessibilityActivationPoint, accessibilityAssistiveTechnologyFocusedIdentifiers, accessibilityAttributedHint, accessibilityAttributedLabel, accessibilityAttributedUserInputLabels, accessibilityAttributedValue, accessibilityContainerType, accessibilityCustomActions, accessibilityCustomRotors, accessibilityDecrement, accessibilityDragSourceDescriptors, accessibilityDropPointDescriptors, accessibilityElementAtIndex, accessibilityElementCount, accessibilityElementDidBecomeFocused, accessibilityElementDidLoseFocus, accessibilityElementIsFocused, accessibilityElements, accessibilityElementsHidden, accessibilityFrame, accessibilityHint, accessibilityIncrement, accessibilityLabel, accessibilityLanguage, accessibilityNavigationStyle, accessibilityPath, accessibilityPerformEscape, accessibilityPerformMagicTap, accessibilityRespondsToUserInteraction, accessibilityScroll, accessibilityTextualContext, accessibilityTraits, accessibilityUserInputLabels, accessibilityValue, accessibilityViewIsModal, addObserverForKeyPathOptionsContext, attemptRecoveryFromErrorOptionIndex, attemptRecoveryFromErrorOptionIndexDelegateDidRecoverSelectorContextInfo, autoContentAccessingProxy, awakeAfterUsingCoder, awakeFromNib, class_objc, classForCoder, classForKeyedArchiver, copy, dealloc, debugDescription, description, dictionaryWithValuesForKeys, didChangeValueForKey, didChangeValueForKeyWithSetMutationUsingObjects, didChangeValuesAtIndexesForKey, doesNotRecognizeSelector, fileManagerShouldProceedAfterError, fileManagerWillProcessPath, finalize_objc, forwardingTargetForSelector, forwardInvocation, hash, indexOfAccessibilityElement, isAccessibilityElement, isEqual, isKindOfClass, isMemberOfClass, isProxy, methodForSelector, methodSignatureForSelector, mutableArrayValueForKey, mutableArrayValueForKeyPath, mutableCopy, mutableOrderedSetValueForKey, mutableOrderedSetValueForKeyPath, mutableSetValueForKey, mutableSetValueForKeyPath, observationInfo, observeValueForKeyPathOfObjectChangeContext, performSelector, performSelectorInBackgroundWithObject, performSelectorOnMainThreadWithObjectWaitUntilDone, performSelectorOnMainThreadWithObjectWaitUntilDoneModes, performSelectorOnThreadWithObjectWaitUntilDone, performSelectorOnThreadWithObjectWaitUntilDoneModes, performSelectorWithObject, performSelectorWithObjectAfterDelay, performSelectorWithObjectAfterDelayInModes, performSelectorWithObjectWithObject, prepareForInterfaceBuilder, provideImageDataBytesPerRowOrigin_Size_UserInfo, removeObserverForKeyPath, removeObserverForKeyPathContext, replacementObjectForCoder, replacementObjectForKeyedArchiver, respondsToSelector, self, setAccessibilityActivationPoint, setAccessibilityAttributedHint, setAccessibilityAttributedLabel, setAccessibilityAttributedUserInputLabels, setAccessibilityAttributedValue, setAccessibilityContainerType, setAccessibilityCustomActions, setAccessibilityCustomRotors, setAccessibilityDragSourceDescriptors, setAccessibilityDropPointDescriptors, setAccessibilityElements, setAccessibilityElementsHidden, setAccessibilityFrame, setAccessibilityHint, setAccessibilityLabel, setAccessibilityLanguage, setAccessibilityNavigationStyle, setAccessibilityPath, setAccessibilityRespondsToUserInteraction, setAccessibilityTextualContext, setAccessibilityTraits, setAccessibilityUserInputLabels, setAccessibilityValue, setAccessibilityViewIsModal, setIsAccessibilityElement, setNilValueForKey, setObservationInfo, setShouldGroupAccessibilityChildren, setValueForKey, setValueForKeyPath, setValueForUndefinedKey, setValuesForKeysWithDictionary, shouldGroupAccessibilityChildren, superclass, validateValueForKeyError, validateValueForKeyPathError, valueForKey, valueForKeyPath, valueForUndefinedKey, willChangeValueForKey, willChangeValueForKeyWithSetMutationUsingObjects, willChangeValuesAtIndexesForKey

Methods inherited from class org.moe.natj.objc.ObjCObject

equals, toString

Methods inherited from class org.moe.natj.general.NativeObject

finalize, getPeer, getPeerPointer

Methods inherited from class java.lang.Object

clone, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

SNAudioStreamAnalyzer

protected SNAudioStreamAnalyzer(org.moe.natj.general.Pointer peer)

Method Detail

accessInstanceVariablesDirectly

public static boolean accessInstanceVariablesDirectly()

addRequestWithObserverError

public boolean addRequestWithObserverError(SNRequest request,
                                           SNResultsObserving observer,
                                           org.moe.natj.general.ptr.Ptr<NSError> error)

Adds a new analysis request to the analyzer

Requests can be added while analysis is in progress. If the analyzer cannot perform the requested analysis, an error will be returned. For example, an error could be returned if the request requires a stream format that doesn't match the analyzer's stream format.

Parameters:

request - An audio analysis request to be performed on the audio stream

observer - The object that will receive the analysis results for the supplied request. The observer is weakly retained by the analyzer.

error - On input, a pointer to an error object. If an error occurs, this pointer is set to an actual error object containing the error information. You may specify nil for this parameter if you do not want the error information.

Returns:

YES if the request was successfully added, and NO otherwise.

alloc

public static SNAudioStreamAnalyzer alloc()

allocWithZone

public static SNAudioStreamAnalyzer allocWithZone(org.moe.natj.general.ptr.VoidPtr zone)

analyzeAudioBufferAtAudioFramePosition

public void analyzeAudioBufferAtAudioFramePosition(AVAudioBuffer audioBuffer,
                                                   long audioFramePosition)

Provides the next buffer for analysis

The framePosition should be a monotonically increasing sample timestamp. If the sample timeline is detected to be non-continuous, the analyzer's internal state may reset to account for the jump. Some types of audio analysis are performed at a fixed block size, which may differ from the buffer sizes provided for analysis. For this reason, an invocation of analyzeAudioBuffer may cause an analysis request observer to be called zero times, one time, or many times, depending on the relationship between the input buffer size, current analyzer state, and native analysis block size. Any errors produced during analysis will be provided through the request observers. This method may block as a means of indicating backpressure to the caller. These methods are not safe to call from a realtime audio context but may be called from lower priority threads (i.e. AVAudioEngine tap callback or AudioQueue callback).

Parameters:

audioBuffer - The buffer containing the audio to be processed

audioFramePosition - The frame position of the data in the buffer

automaticallyNotifiesObserversForKey

public static boolean automaticallyNotifiesObserversForKey(java.lang.String key)

cancelPreviousPerformRequestsWithTarget

public static void cancelPreviousPerformRequestsWithTarget(java.lang.Object aTarget)

cancelPreviousPerformRequestsWithTargetSelectorObject

public static void cancelPreviousPerformRequestsWithTargetSelectorObject(java.lang.Object aTarget,
                                                                         org.moe.natj.objc.SEL aSelector,
                                                                         java.lang.Object anArgument)

classFallbacksForKeyedArchiver

public static NSArray<java.lang.String> classFallbacksForKeyedArchiver()

classForKeyedUnarchiver

public static org.moe.natj.objc.Class classForKeyedUnarchiver()

completeAnalysis

public void completeAnalysis()

Indicates that the audio stream has ended, and no more audio buffers will be analyzed

After this method has been called, it is invalid to provide any more audio data for analysis, and any provided buffers will be ignored. This method is useful for types of analysis that may have final results to provide upon the completion of the stream.

debugDescription_static

public static java.lang.String debugDescription_static()

description_static

public static java.lang.String description_static()

hash_static

public static long hash_static()

init

public SNAudioStreamAnalyzer init()

Overrides:

init in class NSObject

initWithFormat

public SNAudioStreamAnalyzer initWithFormat(AVAudioFormat format)

Creates a new analyzer

Parameters:

format - The format of the audio stream to be analyzed. Only PCM formats are supported.

instanceMethodForSelector

public static NSObject.Function_instanceMethodForSelector_ret instanceMethodForSelector(org.moe.natj.objc.SEL aSelector)

instanceMethodSignatureForSelector

public static NSMethodSignature instanceMethodSignatureForSelector(org.moe.natj.objc.SEL aSelector)

instancesRespondToSelector

public static boolean instancesRespondToSelector(org.moe.natj.objc.SEL aSelector)

isSubclassOfClass

public static boolean isSubclassOfClass(org.moe.natj.objc.Class aClass)

keyPathsForValuesAffectingValueForKey

public static NSSet<java.lang.String> keyPathsForValuesAffectingValueForKey(java.lang.String key)

new_objc

public static SNAudioStreamAnalyzer new_objc()

removeAllRequests

public void removeAllRequests()

Removes all requests from the analyzer

removeRequest

public void removeRequest(SNRequest request)

Removes an existing analysis request from the analyzer

Requests can be removed while analysis is in progress. Once the removeRequest method returns, the previously registered observer will not receive any more callbacks.

Parameters:

request - An audio analysis request to be removed

resolveClassMethod

public static boolean resolveClassMethod(org.moe.natj.objc.SEL sel)

resolveInstanceMethod

public static boolean resolveInstanceMethod(org.moe.natj.objc.SEL sel)

setVersion_static

public static void setVersion_static(long aVersion)

superclass_static

public static org.moe.natj.objc.Class superclass_static()

version_static

public static long version_static()