Package com.github.kokorin.jaffree.process

Class BaseStdReader<T>

java.lang.Object

com.github.kokorin.jaffree.process.BaseStdReader<T>

Type Parameters:

T - type of parsed result

All Implemented Interfaces:

StdReader<T>

Direct Known Subclasses:

FFmpegResultReader, FFprobeLogReader

public abstract class BaseStdReader<T>
extends Object
implements StdReader<T>

BaseStdReader reads std output, parses result and logs, and sends logs to SLF4J with corresponding log level.

Constructor Summary

Constructors

Constructor	Description
BaseStdReader()

Method Summary

Modifier and Type	Method	Description
protected T	defaultResult()
List<LogMessage>	getErrorLogMessages()	Get the list of error messages produced by the running process.
protected abstract T	handleLogMessage(LogMessage logMessage)	Parses single ffmpeg/ffprobe log message.
T	read(InputStream stdOut)	Reads provided InputStream until it's depleted.

Methods inherited from class java.lang.Object

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

Constructor Details

BaseStdReader

public BaseStdReader()

Method Details

read

public T read(InputStream stdOut)

Reads provided InputStream until it's depleted.

This method parses every line to detect ffmpeg log level. Lines with INFO log level are additionally parsed for a result (which may be null because of too strict log level).

Specified by:

read in interface StdReader<T>

Parameters:

stdOut - input stream to read from

Returns:

T if found or null

Throws:

JaffreeException - if IOException appears or program ends with error message.

See Also:

• FFmpeg.setLogLevel(LogLevel)
• FFprobe.setLogLevel(LogLevel)

getErrorLogMessages

public List<LogMessage> getErrorLogMessages()

Get the list of error messages produced by the running process.

Specified by:

getErrorLogMessages in interface StdReader<T>

Returns:

error messages

defaultResult

protected T defaultResult()

Returns:

default result

handleLogMessage

protected abstract T handleLogMessage(LogMessage logMessage)

Parses single ffmpeg/ffprobe log message.

Parameters:

logMessage - log message

Returns:

parsed result or null