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Added in API level 24

AudioRecordingConfiguration

public final class AudioRecordingConfiguration
extends Object implements Parcelable

java.lang.Object
   ↳ android.media.AudioRecordingConfiguration


AudioRecordingConfiguration类收集描述音频记录会话的信息。

直接轮询(请参阅 getActiveRecordingConfigurations() )或回调(请参阅 registerAudioRecordingCallback(android.media.AudioManager.AudioRecordingCallback, android.os.Handler)方法是接收有关设备当前记录配置信息的方法。

音频录制配置包含有关应用程序( getClientFormat()使用的录制格式的信息以及设备实际使用的录制格式( getFormat() )。例如,两种录制格式可能由于硬件而采用不同的采样率限制(例如,应用程序以44.1kHz记录,而设备始终以48kHz记录,并且Android框架为应用程序重新采样)。

该配置还包含记录音频的用例( getClientAudioSource() ),使您能够区分不同的活动,例如正在进行的语音识别或摄像机录制。

Summary

Inherited constants

From interface android.os.Parcelable

Fields

public static final Creator<AudioRecordingConfiguration> CREATOR

Public methods

int describeContents()

描述此Parcelable实例的封送表示中包含的特殊对象的种类。

boolean equals(Object o)

指示其他某个对象是否“等于”这一个。

AudioDeviceInfo getAudioDevice()

返回有关用于此录制的音频输入设备的信息。

int getClientAudioSessionId()

返回记录的会话编号,请参阅 getAudioSessionId()

int getClientAudioSource()

返回正在用于录制的音频源。

AudioFormat getClientFormat()

返回客户端应用程序正在录制音频的音频格式。

AudioFormat getFormat()

返回此Android设备上录制音频的音频格式。

int hashCode()

返回对象的哈希码值。

void writeToParcel(Parcel dest, int flags)

将此对象平铺到一个包裹中。

Inherited methods

From class java.lang.Object
From interface android.os.Parcelable

Fields

Public methods

describeContents

Added in API level 24
int describeContents ()

描述此Parcelable实例的封送表示中包含的特殊对象的种类。 例如,如果对象在writeToParcel(Parcel, int)的输出中包含writeToParcel(Parcel, int) ,则此方法的返回值必须包含CONTENTS_FILE_DESCRIPTOR位。

Returns
int a bitmask indicating the set of special object types marshaled by this Parcelable object instance.

equals

Added in API level 24
boolean equals (Object o)

指示其他某个对象是否“等于”这一个。

equals方法在非空对象引用上实现等价关系:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

Objectequals方法实现了对象上最可能的等价关系; 也就是说,对于任何非空参考值xy ,当且仅当xy指向同一对象( x == y的值为true )时,此方法返回true

请注意,无论何时重写此方法,通常都必须覆盖 hashCode方法,以便维护 hashCode方法的一般合约,该方法声明相等对象必须具有相同的哈希代码。

Parameters
o Object: the reference object with which to compare.
Returns
boolean true if this object is the same as the obj argument; false otherwise.

getAudioDevice

Added in API level 24
AudioDeviceInfo getAudioDevice ()

返回有关用于此录制的音频输入设备的信息。

Returns
AudioDeviceInfo the audio recording device or null if this information cannot be retrieved

getClientAudioSessionId

Added in API level 24
int getClientAudioSessionId ()

返回记录的会话编号,请参阅 getAudioSessionId()

Returns
int the session number.

getClientAudioSource

Added in API level 24
int getClientAudioSource ()

返回正在用于录制的音频源。

Returns
int one of DEFAULT, MIC, VOICE_UPLINK, VOICE_DOWNLINK, VOICE_CALL, CAMCORDER, VOICE_RECOGNITION, VOICE_COMMUNICATION, UNPROCESSED.

getClientFormat

Added in API level 24
AudioFormat getClientFormat ()

返回客户端应用程序正在录制音频的音频格式。 请注意,它可能与实际的记录格式不同(请参阅getFormat() )。

Returns
AudioFormat the recording format

getFormat

Added in API level 24
AudioFormat getFormat ()

返回此Android设备上录制音频的音频格式。 请注意,它可能与客户端应用程序记录格式不同(请参阅getClientFormat() )。

Returns
AudioFormat the device recording format

hashCode

Added in API level 24
int hashCode ()

返回对象的哈希码值。 为了散列表的好处而支持此方法,例如HashMap提供的HashMap

hashCode的总合同是:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

尽可能合理实用,由类Object定义的hashCode方法确实为不同的对象返回不同的整数。 (这通常通过将对象的内部地址转换为整数来实现,但Java TM编程语言不需要此实现技术。)

Returns
int a hash code value for this object.

writeToParcel

Added in API level 24
void writeToParcel (Parcel dest, 
                int flags)

将此对象平铺到一个包裹中。

Parameters
dest Parcel: The Parcel in which the object should be written.
flags int: Additional flags about how the object should be written. May be 0 or PARCELABLE_WRITE_RETURN_VALUE.

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