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TvTrackInfo

public final class TvTrackInfo
extends Object implements Parcelable

java.lang.Object
↳	android.media.tv.TvTrackInfo

Encapsulates the format of tracks played in TvInputService.

Summary

Nested classes
`class`	`TvTrackInfo.Builder` A builder class for creating `TvTrackInfo` objects.

Constants
`int`	`TYPE_AUDIO` The type value for audio tracks.
`int`	`TYPE_SUBTITLE` The type value for subtitle tracks.
`int`	`TYPE_VIDEO` The type value for video tracks.

Inherited constants

From interface android.os.Parcelable

`int`	`CONTENTS_FILE_DESCRIPTOR` Descriptor bit used with `describeContents()`: indicates that the Parcelable object's flattened representation includes a file descriptor.
`int`	`PARCELABLE_WRITE_RETURN_VALUE` Flag for use with `writeToParcel(Parcel, int)`: the object being written is a return value, that is the result of a function such as "`Parcelable someFunction()`", "`void someFunction(out Parcelable)`", or "`void someFunction(inout Parcelable)`".

Fields
`public static final Creator<TvTrackInfo>`	`CREATOR`

Public methods
`int`	`describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`boolean`	`equals(Object o)` Indicates whether some other object is "equal to" this one.
`int`	`getAudioChannelCount()` Returns the audio channel count.
`int`	`getAudioSampleRate()` Returns the audio sample rate, in the unit of Hz.
`CharSequence`	`getDescription()` Returns a user readable description for the current track.
`String`	`getEncoding()` Returns the codec in the form of mime type.
`Bundle`	`getExtra()` Returns the extra information about the current track.
`String`	`getId()` Returns the ID of the track.
`String`	`getLanguage()` Returns the language information encoded by either ISO 639-1 or ISO 639-2/T.
`int`	`getType()` Returns the type of the track.
`byte`	`getVideoActiveFormatDescription()` Returns the Active Format Description (AFD) code of the video.
`float`	`getVideoFrameRate()` Returns the frame rate of the video, in the unit of fps (frames per second).
`int`	`getVideoHeight()` Returns the height of the video, in the unit of pixels.
`float`	`getVideoPixelAspectRatio()` Returns the pixel aspect ratio (the ratio of a pixel's width to its height) of the video.
`int`	`getVideoWidth()` Returns the width of the video, in the unit of pixels.
`int`	`hashCode()` Returns a hash code value for the object.
`boolean`	`isAudioDescription()` Returns `true` if the track is an audio description intended for people with visual impairment, `false` otherwise.
`boolean`	`isEncrypted()` Returns `true` if the track is encrypted, `false` otherwise.
`boolean`	`isHardOfHearing()` Returns `true` if the track is intended for people with hearing impairment, `false` otherwise.
`boolean`	`isSpokenSubtitle()` Returns `true` if the track is a spoken subtitle for people with visual impairment, `false` otherwise.
`void`	`writeToParcel(Parcel dest, int flags)` Used to package this object into a `Parcel`.

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 timeout, 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 timeout)` 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.

From interface


        
          android.os.Parcelable

`abstract int`	`describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`abstract void`	`writeToParcel(Parcel dest, int flags)` Flatten this object in to a Parcel.

Constants

TYPE_AUDIO

public static final int TYPE_AUDIO

The type value for audio tracks.

Constant Value: 0 (0x00000000)

TYPE_SUBTITLE

public static final int TYPE_SUBTITLE

The type value for subtitle tracks.

Constant Value: 2 (0x00000002)

TYPE_VIDEO

public static final int TYPE_VIDEO

The type value for video tracks.

Constant Value: 1 (0x00000001)

Fields

CREATOR

public static final Creator<TvTrackInfo> CREATOR

Public methods

describeContents

public int describeContents ()

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. For example, if the object will include a file descriptor in the output of writeToParcel(android.os.Parcel, int), the return value of this method must include the CONTENTS_FILE_DESCRIPTOR bit.

Returns
`int`	a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either `0` or `CONTENTS_FILE_DESCRIPTOR`

equals

public boolean equals (Object o)

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

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.

The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object (x == y has the value true).

Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.

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.

getAudioChannelCount

public int getAudioChannelCount ()

Returns the audio channel count. Valid only for TYPE_AUDIO tracks.

Returns
`int`

Throws
`IllegalStateException`	if not called on an audio track

getAudioSampleRate

public int getAudioSampleRate ()

Returns the audio sample rate, in the unit of Hz. Valid only for TYPE_AUDIO tracks.

Returns
`int`

Throws
`IllegalStateException`	if not called on an audio track

getDescription

public CharSequence getDescription ()

Returns a user readable description for the current track.

Returns
`CharSequence`

getEncoding

public String getEncoding ()

Returns the codec in the form of mime type. If the encoding is unknown or could not be determined, the corresponding value will be null.

For example of broadcast, codec information may be referred to broadcast standard (e.g. Component Descriptor of ETSI EN 300 468). In the case that track type is subtitle, mime type could be defined in broadcast standard (e.g. "text/dvb.subtitle" or "text/dvb.teletext" in ETSI TS 102 812 V1.3.1 section 7.6).

Returns
`String`

getExtra

public Bundle getExtra ()

Returns the extra information about the current track.

Returns
`Bundle`

getId

public String getId ()

Returns the ID of the track.

Returns
`String`

getLanguage

public String getLanguage ()

Returns the language information encoded by either ISO 639-1 or ISO 639-2/T. If the language is unknown or could not be determined, the corresponding value will be null.

Returns
`String`

getType

public int getType ()

Returns the type of the track. The type should be one of the followings: TYPE_AUDIO, TYPE_VIDEO and TYPE_SUBTITLE.

Returns
`int`	Value is `TYPE_AUDIO`, `TYPE_VIDEO`, or `TYPE_SUBTITLE`

getVideoActiveFormatDescription

public byte getVideoActiveFormatDescription ()

Returns the Active Format Description (AFD) code of the video. Valid only for TYPE_VIDEO tracks.

The complete list of values are defined in ETSI TS 101 154 V1.7.1 Annex B, ATSC A/53 Part 4 and SMPTE 2016-1-2007.

Returns
`byte`

Throws
`IllegalStateException`	if not called on a video track

getVideoFrameRate

public float getVideoFrameRate ()

Returns the frame rate of the video, in the unit of fps (frames per second). Valid only for TYPE_VIDEO tracks.

Returns
`float`

Throws
`IllegalStateException`	if not called on a video track

getVideoHeight

public int getVideoHeight ()

Returns the height of the video, in the unit of pixels. Valid only for TYPE_VIDEO tracks.

Returns
`int`

Throws
`IllegalStateException`	if not called on a video track

getVideoPixelAspectRatio

public float getVideoPixelAspectRatio ()

Returns the pixel aspect ratio (the ratio of a pixel's width to its height) of the video. Valid only for TYPE_VIDEO tracks.

Returns
`float`

Throws
`IllegalStateException`	if not called on a video track

getVideoWidth

public int getVideoWidth ()

Returns the width of the video, in the unit of pixels. Valid only for TYPE_VIDEO tracks.

Returns
`int`

Throws
`IllegalStateException`	if not called on a video track

hashCode

public int hashCode ()

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.

The general contract of hashCode is:

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.

As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java™ programming language.)

Returns
`int`	a hash code value for this object.

isAudioDescription

public boolean isAudioDescription ()

Returns true if the track is an audio description intended for people with visual impairment, false otherwise. Valid only for TYPE_AUDIO tracks.

For example of broadcast, audio description information may be referred to broadcast standard (e.g. ISO 639 Language Descriptor of ISO/IEC 13818-1, Supplementary Audio Language Descriptor, AC-3 Descriptor, Enhanced AC-3 Descriptor, AAC Descriptor of ETSI EN 300 468).

Returns
`boolean`

Throws
`IllegalStateException`	if not called on an audio track

isEncrypted

public boolean isEncrypted ()

Returns true if the track is encrypted, false otherwise. If the encryption status is unknown or could not be determined, the corresponding value will be false.

For example: ISO/IEC 13818-1 defines a CA descriptor that can be used to determine the encryption status of some broadcast streams.

Returns
`boolean`

isHardOfHearing

public boolean isHardOfHearing ()

Returns true if the track is intended for people with hearing impairment, false otherwise. Valid only for TYPE_AUDIO and TYPE_SUBTITLE tracks.

For example of broadcast, hard of hearing information may be referred to broadcast standard (e.g. ISO 639 Language Descriptor of ISO/IEC 13818-1, Supplementary Audio Language Descriptor, AC-3 Descriptor, Enhanced AC-3 Descriptor, AAC Descriptor of ETSI EN 300 468).

Returns
`boolean`

Throws
`IllegalStateException`	if not called on an audio track or a subtitle track

isSpokenSubtitle

public boolean isSpokenSubtitle ()

Returns true if the track is a spoken subtitle for people with visual impairment, false otherwise. Valid only for TYPE_AUDIO tracks.

For example of broadcast, spoken subtitle information may be referred to broadcast standard (e.g. Supplementary Audio Language Descriptor of ETSI EN 300 468).

Returns
`boolean`

Throws
`IllegalStateException`	if not called on an audio track

writeToParcel

public void writeToParcel (Parcel dest, 
                int flags)

Used to package this object into a Parcel.

Parameters
`dest`	`Parcel`: The `Parcel` to be written. This value cannot be `null`.
`flags`	`int`: The flags used for parceling.

Most visited

Recently visited

Results for

TvTrackInfo

Summary

Nested classes

Constants

Inherited constants

Fields

Public methods

Inherited methods

Constants

TYPE_AUDIO

TYPE_SUBTITLE

TYPE_VIDEO

Fields

CREATOR

Public methods

describeContents

equals

getAudioChannelCount

getAudioSampleRate

getDescription

getEncoding

getExtra

getId

getLanguage

getType

getVideoActiveFormatDescription

getVideoFrameRate

getVideoHeight

getVideoPixelAspectRatio

getVideoWidth

hashCode

isAudioDescription

isEncrypted

isHardOfHearing

isSpokenSubtitle

writeToParcel