com.google.android.exoplayer2.text.cea

Class Cea608Decoder

java.lang.Object

com.google.android.exoplayer2.text.cea.Cea608Decoder

All Implemented Interfaces:

Decoder<SubtitleInputBuffer,SubtitleOutputBuffer,SubtitleDecoderException>, SubtitleDecoder

public final class Cea608Decoder
extends java.lang.Object

A SubtitleDecoder for CEA-608 (also known as "line 21 captions" and "EIA-608").

Constructor Summary

Constructors

Constructor and Description
Cea608Decoder(java.lang.String mimeType, int accessibilityChannel)

Method Summary

Modifier and Type	Method and Description
protected Subtitle	createSubtitle() Creates a Subtitle from the available data.
protected void	decode(SubtitleInputBuffer inputBuffer) Filters and processes the raw data, providing Subtitles via createSubtitle() when sufficient data has been processed.
SubtitleInputBuffer	dequeueInputBuffer() Dequeues the next input buffer to be filled and queued to the decoder.
SubtitleOutputBuffer	dequeueOutputBuffer() Dequeues the next output buffer from the decoder.
void	flush() Flushes the decoder.
java.lang.String	getName() Returns the name of the decoder.
protected boolean	isNewSubtitleDataAvailable() Returns whether there is data available to create a new Subtitle.
void	queueInputBuffer(SubtitleInputBuffer inputBuffer) Queues an input buffer to the decoder.
void	release() Releases the decoder.
protected void	releaseOutputBuffer(SubtitleOutputBuffer outputBuffer)
void	setPositionUs(long positionUs) Informs the decoder of the current playback position.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Cea608Decoder

public Cea608Decoder(java.lang.String mimeType,
                     int accessibilityChannel)

Method Detail

getName

public java.lang.String getName()

Description copied from interface: Decoder

Returns the name of the decoder.

Specified by:

getName in interface Decoder<SubtitleInputBuffer,SubtitleOutputBuffer,SubtitleDecoderException>

Returns:

The name of the decoder.

flush

public void flush()

Description copied from interface: Decoder

Flushes the decoder. Ownership of dequeued input buffers is returned to the decoder. The caller is still responsible for releasing any dequeued output buffers.

Specified by:

flush in interface Decoder<SubtitleInputBuffer,SubtitleOutputBuffer,SubtitleDecoderException>

release

public void release()

Description copied from interface: Decoder

Releases the decoder. Must be called when the decoder is no longer needed.

Specified by:

release in interface Decoder<SubtitleInputBuffer,SubtitleOutputBuffer,SubtitleDecoderException>

isNewSubtitleDataAvailable

protected boolean isNewSubtitleDataAvailable()

Returns whether there is data available to create a new Subtitle.

createSubtitle

protected Subtitle createSubtitle()

Creates a Subtitle from the available data.

decode

protected void decode(SubtitleInputBuffer inputBuffer)

Filters and processes the raw data, providing Subtitles via createSubtitle() when sufficient data has been processed.

setPositionUs

public void setPositionUs(long positionUs)

Description copied from interface: SubtitleDecoder

Informs the decoder of the current playback position.

Must be called prior to each attempt to dequeue output buffers from the decoder.

Specified by:

setPositionUs in interface SubtitleDecoder

Parameters:

positionUs - The current playback position in microseconds.

dequeueInputBuffer

public SubtitleInputBuffer dequeueInputBuffer()
                                       throws SubtitleDecoderException

Description copied from interface: Decoder

Dequeues the next input buffer to be filled and queued to the decoder.

Specified by:

dequeueInputBuffer in interface Decoder<SubtitleInputBuffer,SubtitleOutputBuffer,SubtitleDecoderException>

Returns:

The input buffer, which will have been cleared, or null if a buffer isn't available.

Throws:

SubtitleDecoderException

queueInputBuffer

public void queueInputBuffer(SubtitleInputBuffer inputBuffer)
                      throws SubtitleDecoderException

Description copied from interface: Decoder

Queues an input buffer to the decoder.

Specified by:

queueInputBuffer in interface Decoder<SubtitleInputBuffer,SubtitleOutputBuffer,SubtitleDecoderException>

Parameters:

inputBuffer - The input buffer.

Throws:

SubtitleDecoderException

dequeueOutputBuffer

public SubtitleOutputBuffer dequeueOutputBuffer()
                                         throws SubtitleDecoderException

Description copied from interface: Decoder

Dequeues the next output buffer from the decoder.

Specified by:

dequeueOutputBuffer in interface Decoder<SubtitleInputBuffer,SubtitleOutputBuffer,SubtitleDecoderException>

Returns:

The output buffer, or null if an output buffer isn't available.

Throws:

SubtitleDecoderException

releaseOutputBuffer

protected void releaseOutputBuffer(SubtitleOutputBuffer outputBuffer)