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Added in API level 23

Summary: Constants | Methods | Inherited Methods | [Expand All]

AudioDeviceInfo

public final class AudioDeviceInfo
extends Object

java.lang.Object
↳	android.media.AudioDeviceInfo

Class to provide information about the audio devices.

Summary

Constants
`int`	`TYPE_AUX_LINE` A device type describing the auxiliary line-level connectors.
`int`	`TYPE_BLUETOOTH_A2DP` A device type describing a Bluetooth device supporting the A2DP profile.
`int`	`TYPE_BLUETOOTH_SCO` A device type describing a Bluetooth device typically used for telephony.
`int`	`TYPE_BUILTIN_EARPIECE` A device type describing the attached earphone speaker.
`int`	`TYPE_BUILTIN_MIC` A device type describing the microphone(s) built in a device.
`int`	`TYPE_BUILTIN_SPEAKER` A device type describing the speaker system (i.e.
`int`	`TYPE_BUS` A type-agnostic device used for communication with external audio systems
`int`	`TYPE_DOCK` A device type describing the audio device associated with a dock.
`int`	`TYPE_FM` A device type associated with the transmission of audio signals over FM.
`int`	`TYPE_FM_TUNER` A device type for accessing the audio content transmitted over FM.
`int`	`TYPE_HDMI` A device type describing an HDMI connection .
`int`	`TYPE_HDMI_ARC` A device type describing the Audio Return Channel of an HDMI connection.
`int`	`TYPE_IP` A device type connected over IP.
`int`	`TYPE_LINE_ANALOG` A device type describing an analog line-level connection.
`int`	`TYPE_LINE_DIGITAL` A device type describing a digital line connection (e.g.
`int`	`TYPE_TELEPHONY` A device type describing the transmission of audio signals over the telephony network.
`int`	`TYPE_TV_TUNER` A device type for accessing the audio content transmitted over the TV tuner system.
`int`	`TYPE_UNKNOWN` A device type associated with an unknown or uninitialized device.
`int`	`TYPE_USB_ACCESSORY` A device type describing a USB audio device in accessory mode.
`int`	`TYPE_USB_DEVICE` A device type describing a USB audio device.
`int`	`TYPE_WIRED_HEADPHONES` A device type describing a pair of wired headphones.
`int`	`TYPE_WIRED_HEADSET` A device type describing a headset, which is the combination of a headphones and microphone.

Public methods
`int[]`	`getChannelCounts()`
`int[]`	`getChannelIndexMasks()`
`int[]`	`getChannelMasks()`
`int[]`	`getEncodings()`
`int`	`getId()`
`CharSequence`	`getProductName()`
`int[]`	`getSampleRates()`
`int`	`getType()`
`boolean`	`isSink()`
`boolean`	`isSource()`

Inherited methods

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Constants

TYPE_AUX_LINE

Added in API level 23

int TYPE_AUX_LINE

A device type describing the auxiliary line-level connectors.

Constant Value: 19 (0x00000013)

TYPE_BLUETOOTH_A2DP

Added in API level 23

int TYPE_BLUETOOTH_A2DP

A device type describing a Bluetooth device supporting the A2DP profile.

Constant Value: 8 (0x00000008)

TYPE_BLUETOOTH_SCO

Added in API level 23

int TYPE_BLUETOOTH_SCO

A device type describing a Bluetooth device typically used for telephony.

Constant Value: 7 (0x00000007)

TYPE_BUILTIN_EARPIECE

Added in API level 23

int TYPE_BUILTIN_EARPIECE

A device type describing the attached earphone speaker.

Constant Value: 1 (0x00000001)

TYPE_BUILTIN_MIC

Added in API level 23

int TYPE_BUILTIN_MIC

A device type describing the microphone(s) built in a device.

Constant Value: 15 (0x0000000f)

TYPE_BUILTIN_SPEAKER

Added in API level 23

int TYPE_BUILTIN_SPEAKER

A device type describing the speaker system (i.e. a mono speaker or stereo speakers) built in a device.

Constant Value: 2 (0x00000002)

TYPE_BUS

Added in API level 24

int TYPE_BUS

A type-agnostic device used for communication with external audio systems

Constant Value: 21 (0x00000015)

TYPE_DOCK

Added in API level 23

int TYPE_DOCK

A device type describing the audio device associated with a dock.

Constant Value: 13 (0x0000000d)

TYPE_FM

Added in API level 23

int TYPE_FM

A device type associated with the transmission of audio signals over FM.

Constant Value: 14 (0x0000000e)

TYPE_FM_TUNER

Added in API level 23

int TYPE_FM_TUNER

A device type for accessing the audio content transmitted over FM.

Constant Value: 16 (0x00000010)

TYPE_HDMI

Added in API level 23

int TYPE_HDMI

A device type describing an HDMI connection .

Constant Value: 9 (0x00000009)

TYPE_HDMI_ARC

Added in API level 23

int TYPE_HDMI_ARC

A device type describing the Audio Return Channel of an HDMI connection.

Constant Value: 10 (0x0000000a)

TYPE_IP

Added in API level 23

int TYPE_IP

A device type connected over IP.

Constant Value: 20 (0x00000014)

TYPE_LINE_ANALOG

Added in API level 23

int TYPE_LINE_ANALOG

A device type describing an analog line-level connection.

Constant Value: 5 (0x00000005)

TYPE_LINE_DIGITAL

Added in API level 23

int TYPE_LINE_DIGITAL

A device type describing a digital line connection (e.g. SPDIF).

Constant Value: 6 (0x00000006)

TYPE_TELEPHONY

Added in API level 23

int TYPE_TELEPHONY

A device type describing the transmission of audio signals over the telephony network.

Constant Value: 18 (0x00000012)

TYPE_TV_TUNER

Added in API level 23

int TYPE_TV_TUNER

A device type for accessing the audio content transmitted over the TV tuner system.

Constant Value: 17 (0x00000011)

TYPE_UNKNOWN

Added in API level 23

int TYPE_UNKNOWN

A device type associated with an unknown or uninitialized device.

Constant Value: 0 (0x00000000)

TYPE_USB_ACCESSORY

Added in API level 23

int TYPE_USB_ACCESSORY

A device type describing a USB audio device in accessory mode.

Constant Value: 12 (0x0000000c)

TYPE_USB_DEVICE

Added in API level 23

int TYPE_USB_DEVICE

A device type describing a USB audio device.

Constant Value: 11 (0x0000000b)

TYPE_WIRED_HEADPHONES

Added in API level 23

int TYPE_WIRED_HEADPHONES

A device type describing a pair of wired headphones.

Constant Value: 4 (0x00000004)

TYPE_WIRED_HEADSET

Added in API level 23

int TYPE_WIRED_HEADSET

A device type describing a headset, which is the combination of a headphones and microphone.

Constant Value: 3 (0x00000003)

Public methods

getChannelCounts

Added in API level 23

int[] getChannelCounts ()

Returns
`int[]`	An array of channel counts (1, 2, 4, ...) for which this audio device can be configured. Note: an empty array indicates that the device supports arbitrary channel counts.

getChannelIndexMasks

Added in API level 23

int[] getChannelIndexMasks ()

Returns
`int[]`	An array of channel index masks for which this audio device can be configured.

See also:

Note: an empty array indicates that the device supports arbitrary channel index masks.

getChannelMasks

Added in API level 23

int[] getChannelMasks ()

Returns
`int[]`	An array of channel position masks (e.g. `CHANNEL_IN_STEREO`, `CHANNEL_OUT_7POINT1`) for which this audio device can be configured.

See also:

Note: an empty array indicates that the device supports arbitrary channel masks.

getEncodings

Added in API level 23

int[] getEncodings ()

Returns

int[] An array of audio encodings (e.g. ENCODING_PCM_16BIT, ENCODING_PCM_FLOAT) supported by the audio device. ENCODING_PCM_FLOAT indicates the device supports more than 16 bits of integer precision. As there is no AudioFormat constant specifically defined for 24-bit PCM, the value ENCODING_PCM_FLOAT indicates that AudioTrack or AudioRecord can preserve at least 24 bits of integer precision to that device.

Returns
`int[]`	An array of audio encodings (e.g. `ENCODING_PCM_16BIT`, `ENCODING_PCM_FLOAT`) supported by the audio device. `ENCODING_PCM_FLOAT` indicates the device supports more than 16 bits of integer precision. As there is no AudioFormat constant specifically defined for 24-bit PCM, the value `ENCODING_PCM_FLOAT` indicates that `AudioTrack` or `AudioRecord` can preserve at least 24 bits of integer precision to that device.

See also:

Note: an empty array indicates that the device supports arbitrary encodings.

getId

Added in API level 23

int getId ()

Returns
`int`	The internal device ID.

getProductName

Added in API level 23

CharSequence getProductName ()

Returns
`CharSequence`	The human-readable name of the audio device.

getSampleRates

Added in API level 23

int[] getSampleRates ()

Returns
`int[]`	An array of sample rates supported by the audio device. Note: an empty array indicates that the device supports arbitrary rates.

getType

Added in API level 23

int getType ()

Returns
`int`	The device type identifier of the audio device (i.e. TYPE_BUILTIN_SPEAKER).

isSink

Added in API level 23

boolean isSink ()

Returns
`boolean`	true if the audio device is a sink for audio data (i.e. an output).

isSource

Added in API level 23

boolean isSource ()

Returns
`boolean`	true if the audio device is a source for audio data (e.e an input).