oboe::AudioStreamBase Class Reference

#include <AudioStreamBase.h>

Inheritance diagram for oboe::AudioStreamBase:

Public Member Functions
	AudioStreamBase (const AudioStreamBase &)=default
AudioStreamBase &	operator= (const AudioStreamBase &)=default
int32_t	getChannelCount () const
Direction	getDirection () const
int32_t	getSampleRate () const
int32_t	getFramesPerCallback () const
int32_t	getFramesPerDataCallback () const
AudioFormat	getFormat () const
virtual int32_t	getBufferSizeInFrames ()
virtual int32_t	getBufferCapacityInFrames () const
SharingMode	getSharingMode () const
PerformanceMode	getPerformanceMode () const
int32_t	getDeviceId () const
AudioStreamDataCallback *	getDataCallback () const
AudioStreamErrorCallback *	getErrorCallback () const
bool	isDataCallbackSpecified () const
bool	isErrorCallbackSpecified () const
Usage	getUsage () const
ContentType	getContentType () const
InputPreset	getInputPreset () const
SessionId	getSessionId () const
bool	isContentSpatialized () const
SpatializationBehavior	getSpatializationBehavior () const
AllowedCapturePolicy	getAllowedCapturePolicy () const
PrivacySensitiveMode	getPrivacySensitiveMode () const
bool	isChannelConversionAllowed () const
bool	isFormatConversionAllowed () const
SampleRateConversionQuality	getSampleRateConversionQuality () const
ChannelMask	getChannelMask () const
int32_t	getHardwareChannelCount () const
int32_t	getHardwareSampleRate () const
AudioFormat	getHardwareFormat () const

Protected Member Functions
virtual Result	isValidConfig ()

Protected Attributes
AudioStreamDataCallback *	mDataCallback = nullptr
std::shared_ptr< AudioStreamDataCallback >	mSharedDataCallback
AudioStreamErrorCallback *	mErrorCallback = nullptr
std::shared_ptr< AudioStreamErrorCallback >	mSharedErrorCallback
int32_t	mFramesPerCallback = kUnspecified
int32_t	mChannelCount = kUnspecified
int32_t	mSampleRate = kUnspecified
int32_t	mDeviceId = kUnspecified
int32_t	mBufferCapacityInFrames = kUnspecified
int32_t	mBufferSizeInFrames = kUnspecified
ChannelMask	mChannelMask = ChannelMask::Unspecified
SharingMode	mSharingMode = SharingMode::Shared
AudioFormat	mFormat = AudioFormat::Unspecified
Direction	mDirection = Direction::Output
PerformanceMode	mPerformanceMode = PerformanceMode::None
Usage	mUsage = Usage::Media
ContentType	mContentType = ContentType::Music
InputPreset	mInputPreset = InputPreset::VoiceRecognition
SessionId	mSessionId = SessionId::None
AllowedCapturePolicy	mAllowedCapturePolicy = AllowedCapturePolicy::Unspecified
PrivacySensitiveMode	mPrivacySensitiveMode = PrivacySensitiveMode::Unspecified
std::string	mPackageName
std::string	mAttributionTag
bool	mIsContentSpatialized = false
SpatializationBehavior	mSpatializationBehavior = SpatializationBehavior::Unspecified
int32_t	mHardwareChannelCount = kUnspecified
int32_t	mHardwareSampleRate = kUnspecified
AudioFormat	mHardwareFormat = AudioFormat::Unspecified
bool	mChannelConversionAllowed = false
bool	mFormatConversionAllowed = false
SampleRateConversionQuality	mSampleRateConversionQuality = SampleRateConversionQuality::Medium

Detailed Description

Base class containing parameters for audio streams and builders.

Constructor & Destructor Documentation

AudioStreamBase()

oboe::AudioStreamBase::AudioStreamBase ( const AudioStreamBase &  )

default

Default copy constructor

Member Function Documentation

getAllowedCapturePolicy()

AllowedCapturePolicy oboe::AudioStreamBase::getAllowedCapturePolicy ( ) const

inline

Return the policy that determines whether the audio may or may not be captured by other apps or the system.

See AudioStreamBuilder_setAllowedCapturePolicy().

Added in API level 29 to AAudio.

Returns

the allowed capture policy, for example AllowedCapturePolicy::All

getBufferCapacityInFrames()

virtual int32_t oboe::AudioStreamBase::getBufferCapacityInFrames ( ) const

inlinevirtual

Returns

capacityInFrames or kUnspecified

getBufferSizeInFrames()

virtual int32_t oboe::AudioStreamBase::getBufferSizeInFrames ( )

inlinevirtual

Query the maximum number of frames that can be filled without blocking. If the stream has been closed the last known value will be returned.

Returns

buffer size

getChannelCount()

int32_t oboe::AudioStreamBase::getChannelCount ( ) const

inline

Returns

number of channels, for example 2 for stereo, or kUnspecified

getChannelMask()

ChannelMask oboe::AudioStreamBase::getChannelMask ( ) const

inline

Returns

the stream's channel mask.

getContentType()

ContentType oboe::AudioStreamBase::getContentType ( ) const

inline

Returns

the stream's content type.

getDataCallback()

AudioStreamDataCallback * oboe::AudioStreamBase::getDataCallback ( ) const

inline

For internal use only.

Returns

the data callback object for this stream, if set.

getDeviceId()

int32_t oboe::AudioStreamBase::getDeviceId ( ) const

inline

Returns

the device ID of the stream.

getDirection()

Direction oboe::AudioStreamBase::getDirection ( ) const

inline

Returns

Direction::Input or Direction::Output

getErrorCallback()

AudioStreamErrorCallback * oboe::AudioStreamBase::getErrorCallback ( ) const

inline

For internal use only.

Returns

the error callback object for this stream, if set.

getFormat()

AudioFormat oboe::AudioStreamBase::getFormat ( ) const

inline

Returns

the audio sample format (e.g. Float or I16)

getFramesPerCallback()

int32_t oboe::AudioStreamBase::getFramesPerCallback ( ) const

inline

Deprecated:

use getFramesPerDataCallback instead.

getFramesPerDataCallback()

int32_t oboe::AudioStreamBase::getFramesPerDataCallback ( ) const

inline

Returns

the number of frames in each data callback or kUnspecified.

getHardwareChannelCount()

int32_t oboe::AudioStreamBase::getHardwareChannelCount ( ) const

inline

Returns

number of channels for the hardware, for example 2 for stereo, or kUnspecified.

getHardwareFormat()

AudioFormat oboe::AudioStreamBase::getHardwareFormat ( ) const

inline

Returns

the audio sample format of the hardware (e.g. Float or I16)

getHardwareSampleRate()

int32_t oboe::AudioStreamBase::getHardwareSampleRate ( ) const

inline

Returns

hardware sample rate for the stream or kUnspecified

getInputPreset()

InputPreset oboe::AudioStreamBase::getInputPreset ( ) const

inline

Returns

the stream's input preset.

getPerformanceMode()

PerformanceMode oboe::AudioStreamBase::getPerformanceMode ( ) const

inline

Returns

the performance mode of the stream.

getPrivacySensitiveMode()

PrivacySensitiveMode oboe::AudioStreamBase::getPrivacySensitiveMode ( ) const

inline

Return whether this input stream is marked as privacy sensitive.

See AudioStreamBuilder_setPrivacySensitiveMode().

Added in API level 30 to AAudio.

Returns

PrivacySensitiveMode::Enabled if privacy sensitive, PrivacySensitiveMode::Disabled if not privacy sensitive, and PrivacySensitiveMode::Unspecified if API is not supported.

getSampleRate()

int32_t oboe::AudioStreamBase::getSampleRate ( ) const

inline

Returns

sample rate for the stream or kUnspecified

getSampleRateConversionQuality()

SampleRateConversionQuality oboe::AudioStreamBase::getSampleRateConversionQuality ( ) const

inline

Returns

whether and how Oboe can convert sample rates to achieve optimal results.

getSessionId()

SessionId oboe::AudioStreamBase::getSessionId ( ) const

inline

Returns

the stream's session ID allocation strategy (None or Allocate).

getSharingMode()

SharingMode oboe::AudioStreamBase::getSharingMode ( ) const

inline

Returns

the sharing mode of the stream.

getSpatializationBehavior()

SpatializationBehavior oboe::AudioStreamBase::getSpatializationBehavior ( ) const

inline

Returns

the spatialization behavior for the stream.

getUsage()

Usage oboe::AudioStreamBase::getUsage ( ) const

inline

Returns

the usage for this stream.

isChannelConversionAllowed()

bool oboe::AudioStreamBase::isChannelConversionAllowed ( ) const

inline

Returns

true if Oboe can convert channel counts to achieve optimal results.

isContentSpatialized()

bool oboe::AudioStreamBase::isContentSpatialized ( ) const

inline

Returns

whether the content of the stream is spatialized.

isDataCallbackSpecified()

bool oboe::AudioStreamBase::isDataCallbackSpecified ( ) const

inline

Returns

true if a data callback was set for this stream

isErrorCallbackSpecified()

bool oboe::AudioStreamBase::isErrorCallbackSpecified ( ) const

inline

Note that if the app does not set an error callback then a default one may be provided.

Returns

true if an error callback was set for this stream

isFormatConversionAllowed()

bool oboe::AudioStreamBase::isFormatConversionAllowed ( ) const

inline

Returns

true if Oboe can convert data formats to achieve optimal results.

isValidConfig()

virtual Result oboe::AudioStreamBase::isValidConfig ( )

inlineprotectedvirtual

Validate stream parameters that might not be checked in lower layers

operator=()

AudioStreamBase & oboe::AudioStreamBase::operator= ( const AudioStreamBase &  )

default

Default assignment operator

Member Data Documentation

mAllowedCapturePolicy

AllowedCapturePolicy oboe::AudioStreamBase::mAllowedCapturePolicy = AllowedCapturePolicy::Unspecified

protected

Allowed Capture Policy. Only active on Android 29+

mAttributionTag

std::string oboe::AudioStreamBase::mAttributionTag

protected

Control the attribution tag of the context creating the stream. Only active on Android 31+

mBufferCapacityInFrames

int32_t oboe::AudioStreamBase::mBufferCapacityInFrames = kUnspecified

protected

Stream buffer capacity specified as a number of audio frames

mBufferSizeInFrames

int32_t oboe::AudioStreamBase::mBufferSizeInFrames = kUnspecified

protected

Stream buffer size specified as a number of audio frames

mChannelCount

int32_t oboe::AudioStreamBase::mChannelCount = kUnspecified

protected

Stream channel count

mChannelMask

ChannelMask oboe::AudioStreamBase::mChannelMask = ChannelMask::Unspecified

protected

Stream channel mask. Only active on Android 32+

mContentType

ContentType oboe::AudioStreamBase::mContentType = ContentType::Music

protected

Stream content type. Only active on Android 28+

mDataCallback

AudioStreamDataCallback* oboe::AudioStreamBase::mDataCallback = nullptr

protected

The callback which will be fired when new data is ready to be read/written.

mDeviceId

int32_t oboe::AudioStreamBase::mDeviceId = kUnspecified

protected

Stream audio device ID

mDirection

Direction oboe::AudioStreamBase::mDirection = Direction::Output

protected

Stream direction

mErrorCallback

AudioStreamErrorCallback* oboe::AudioStreamBase::mErrorCallback = nullptr

protected

The callback which will be fired when an error or a disconnect occurs.

mFormat

AudioFormat oboe::AudioStreamBase::mFormat = AudioFormat::Unspecified

protected

Format of audio frames

mFramesPerCallback

int32_t oboe::AudioStreamBase::mFramesPerCallback = kUnspecified

protected

Number of audio frames which will be requested in each callback

mHardwareChannelCount

int32_t oboe::AudioStreamBase::mHardwareChannelCount = kUnspecified

protected

Hardware channel count. Only specified on Android 34+ AAudio streams

mHardwareFormat

AudioFormat oboe::AudioStreamBase::mHardwareFormat = AudioFormat::Unspecified

protected

Hardware format. Only specified on Android 34+ AAudio streams

mHardwareSampleRate

int32_t oboe::AudioStreamBase::mHardwareSampleRate = kUnspecified

protected

Hardware sample rate. Only specified on Android 34+ AAudio streams

mInputPreset

InputPreset oboe::AudioStreamBase::mInputPreset = InputPreset::VoiceRecognition

protected

Stream input preset. Only active on Android 28+ TODO InputPreset::Unspecified should be considered as a possible default alternative.

mIsContentSpatialized

bool oboe::AudioStreamBase::mIsContentSpatialized = false

protected

Whether the content is already spatialized. Only used on Android 32+

mPackageName

std::string oboe::AudioStreamBase::mPackageName

protected

Control the name of the package creating the stream. Only active on Android 31+

mPerformanceMode

PerformanceMode oboe::AudioStreamBase::mPerformanceMode = PerformanceMode::None

protected

Stream performance mode

mPrivacySensitiveMode

PrivacySensitiveMode oboe::AudioStreamBase::mPrivacySensitiveMode = PrivacySensitiveMode::Unspecified

protected

Privacy Sensitive Mode. Only active on Android 30+

mSampleRate

int32_t oboe::AudioStreamBase::mSampleRate = kUnspecified

protected

Stream sample rate

mSessionId

SessionId oboe::AudioStreamBase::mSessionId = SessionId::None

protected

Stream session ID allocation strategy. Only active on Android 28+

mSharingMode

SharingMode oboe::AudioStreamBase::mSharingMode = SharingMode::Shared

protected

Stream sharing mode

mSpatializationBehavior

SpatializationBehavior oboe::AudioStreamBase::mSpatializationBehavior = SpatializationBehavior::Unspecified

protected

Spatialization Behavior. Only active on Android 32+

mUsage

Usage oboe::AudioStreamBase::mUsage = Usage::Media

protected

Stream usage. Only active on Android 28+

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The documentation for this class was generated from the following file:

• include/oboe/AudioStreamBase.h