com.googlecode.fascinator.transformer.ffmpeg
Class FfmpegImpl

java.lang.Object
  com.googlecode.fascinator.transformer.ffmpeg.FfmpegImpl

All Implemented Interfaces:

Ffmpeg

public class FfmpegImpl
extends Object
implements Ffmpeg

Wrapper for the FFMPEG program

Author:

Oliver Lucido

Field Summary

Fields inherited from interface com.googlecode.fascinator.transformer.ffmpeg.Ffmpeg

DEFAULT_BIN_METADATA, DEFAULT_BIN_TRANSCODE

Constructor Summary

FfmpegImpl()
Instantiate using default binaries

FfmpegImpl(String executable, String metadata)
Instantiate using provided binaries (if found)

Method Summary

String	extract(File inputFile) Extract metadata from the given file
FfmpegInfo	getInfo(File inputFile) Extract and process metadata from the given file
void	setEnvironmentVariable(String key, String value) Set an environment variable to be made available to the executing FFmpeg
String	testAvailability() What level of functionality is available from FFmpeg on this system
String	transform(List<String> params, File location) Transform a file using the provided parameters

Methods inherited from class java.lang.Object

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

Constructor Detail

FfmpegImpl

public FfmpegImpl()

Instantiate using default binaries

FfmpegImpl

public FfmpegImpl(String executable,
                  String metadata)

Instantiate using provided binaries (if found)

Parameters:

executable - Binary for transcoding

metadata - Binary for metadata extraction

Method Detail

testAvailability

public String testAvailability()

What level of functionality is available from FFmpeg on this system

Specified by:

testAvailability in interface Ffmpeg

Returns:

String indicating the level of available functionality

extract

public String extract(File inputFile)
               throws IOException

Extract metadata from the given file

Specified by:

extract in interface Ffmpeg

Parameters:

file - to extract metadata from

Returns:

String containing the raw output

Throws:

IOException - if execution failed

transform

public String transform(List<String> params,
                        File location)
                 throws IOException

Transform a file using the provided parameters

Specified by:

transform in interface Ffmpeg

Parameters:

params - List of parameters to provide the binary

location - A File object of the working directory to use during transcoding

Returns:

String containing the raw output

Throws:

IOException - if execution failed

getInfo

public FfmpegInfo getInfo(File inputFile)
                   throws IOException

Extract and process metadata from the given file

Specified by:

getInfo in interface Ffmpeg

Parameters:

file - to extract metadata from

Returns:

FfmpegInfo containing the processed output

Throws:

IOException - if execution failed

setEnvironmentVariable

public void setEnvironmentVariable(String key,
                                   String value)

Set an environment variable to be made available to the executing FFmpeg

Specified by:

setEnvironmentVariable in interface Ffmpeg

Parameters:

key - : The name of environment variable

value - : The value to assign