Package org.robolectric.shadows

Class ShadowMediaMuxer

java.lang.Object

org.robolectric.shadows.ShadowMediaMuxer

@Implements(value=android.media.MediaMuxer.class,
            minSdk=21)
public class ShadowMediaMuxer
extends Object

Implementation of MediaMuxer which directly passes input bytes to the specified file, with no modification.

Constructor Summary

Constructors

Constructor	Description
ShadowMediaMuxer()

Method Summary

Modifier and Type	Method	Description
protected void	__constructor__(String path, int format)	Opens a FileOutputStream for the given path, and sets muxer state.
protected static int	nativeAddTrack(long nativeObject, String[] keys, Object[] values)	Returns an incremented track id for the associated muxer.
protected static long	nativeSetup(FileDescriptor fd, int format)	Generates and returns an internal id to track the FileOutputStream corresponding to individual MediaMuxer instances.
protected static void	nativeStop(long nativeObject)	Closes the FileOutputStream for the associated muxer.
protected static void	nativeWriteSampleData(long nativeObject, int trackIndex, ByteBuffer byteBuf, int offset, int size, long presentationTimeUs, int flags)	Writes the given data to the FileOutputStream for the associated muxer.

Methods inherited from class java.lang.Object

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

Constructor Detail

ShadowMediaMuxer

public ShadowMediaMuxer()

Method Detail

__constructor__

@Implementation
protected void __constructor__(String path,
                               int format)
                        throws IOException

Opens a FileOutputStream for the given path, and sets muxer state.

This needs to be shadowed, because the current MediaMuxer constructor opens a RandomAccessFile, passes only the FileDescriptor along, and then closes the file. Since there does not appear to be an easy way to go from FileDescriptor to a writeable stream in Java, this method overrides that behavior to instead open and maintain a FileOutputStream.

Throws:

IOException

nativeSetup

@Implementation
protected static long nativeSetup(FileDescriptor fd,
                                  int format)
                           throws IOException

Generates and returns an internal id to track the FileOutputStream corresponding to individual MediaMuxer instances.

Throws:

IOException

nativeAddTrack

@Implementation
protected static int nativeAddTrack(long nativeObject,
                                    String[] keys,
                                    Object[] values)

Returns an incremented track id for the associated muxer.

nativeWriteSampleData

@Implementation
protected static void nativeWriteSampleData(long nativeObject,
                                            int trackIndex,
                                            ByteBuffer byteBuf,
                                            int offset,
                                            int size,
                                            long presentationTimeUs,
                                            int flags)

Writes the given data to the FileOutputStream for the associated muxer.

nativeStop

@Implementation
protected static void nativeStop(long nativeObject)

Closes the FileOutputStream for the associated muxer.