Package org.opencastproject.composer.impl

Class EncoderEngine

java.lang.Object

org.opencastproject.composer.impl.EncoderEngine

All Implemented Interfaces:

AutoCloseable

public class EncoderEngine
extends Object
implements AutoCloseable

Abstract base class for encoder engines.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	EncoderEngine.OutputAggregate	Rewrite multiple profiles to ffmpeg complex filter filtergraph chains - inputs are passed in as options, eq: [0aa] and [0vv] Any filters in the encoding profiles are moved into a clause in the complex filter chain for each output

Method Summary

Modifier and Type	Method	Description
void	close()
List<String>	commandSplit(String str)	Splits a line into tokens - mindful of single and double quoted string as single token Apache common and guava do not deal with quotes
String	joinNonNullString(String[] srlist, String separator)	Use a separator to join a string entry only if it is not null or empty
List<File>	multiTrimConcat(List<File> inputs, List<Long> edits, List<org.opencastproject.composer.api.EncodingProfile> profiles, int transitionDuration)	Concatenate segments of one or more input tracks specified by trim points into the track the edits are passed in as double so that it is generic.
List<File>	multiTrimConcat(List<File> inputs, List<Long> edits, List<org.opencastproject.composer.api.EncodingProfile> profiles, int transitionDuration, boolean hasVideo, boolean hasAudio)
protected List<File>	process(List<String> commandopts)

Methods inherited from class java.lang.Object

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

Method Details

process

protected List<File> process(List<String> commandopts)
                      throws org.opencastproject.composer.api.EncoderException

Throws:

org.opencastproject.composer.api.EncoderException

close

public void close()

Specified by:

close in interface AutoCloseable

commandSplit

public List<String> commandSplit(String str)

Splits a line into tokens - mindful of single and double quoted string as single token Apache common and guava do not deal with quotes

Parameters:

str -

Returns:

an array of string tokens

joinNonNullString

public String joinNonNullString(String[] srlist,
 String separator)

Use a separator to join a string entry only if it is not null or empty

Parameters:

srlist - -array of string

separator - - to join the string

Returns:

a string

multiTrimConcat

public List<File> multiTrimConcat(List<File> inputs,
 List<Long> edits,
 List<org.opencastproject.composer.api.EncodingProfile> profiles,
 int transitionDuration)
                           throws org.opencastproject.composer.api.EncoderException

Concatenate segments of one or more input tracks specified by trim points into the track the edits are passed in as double so that it is generic. The tracks are assumed to have the same resolution.

Parameters:

inputs - - input tracks as a list of files

edits - - edits are a flat list of triplets, each triplet represent one clip: index (int) into input tracks, trim in point(long) in milliseconds and trim out point (long) in milliseconds for each segment

profiles - - encoding profiles for each delivery target - [optional] one adaptive profile to apply to the outputs to generate manifests/playlists

transitionDuration - in ms, transition time between each edited segment

Throws:

org.opencastproject.composer.api.EncoderException - - if it fails

multiTrimConcat

public List<File> multiTrimConcat(List<File> inputs,
 List<Long> edits,
 List<org.opencastproject.composer.api.EncodingProfile> profiles,
 int transitionDuration,
 boolean hasVideo,
 boolean hasAudio)
                           throws org.opencastproject.composer.api.EncoderException,
IllegalArgumentException

Throws:

org.opencastproject.composer.api.EncoderException

IllegalArgumentException