MediaMetadataRetriever

The metadata key to retrieve the information about the album title of the data source.

The metadata key to retrieve the information about the performers or artist associated with the data source.

The metadata key to retrieve the information about the artist of the data source.

The metadata key to retrieve the information about the author of the data source.

This key retrieves the average bitrate (in bits/sec), if available.

The metadata key to retrieve the numeric string describing the order of the audio data source on its original recording.

The metadata key to retrieve the music album compilation status.

The metadata key to retrieve the information about the composer of the data source.

The metadata key to retrieve the date when the data source was created or modified.

The metadata key to retrieve the numberic string that describes which part of a set the audio data source comes from.

The metadata key to retrieve the playback duration of the data source.

The metadata key to retrieve the content type or genre of the data source.

If this key exists the media contains audio content.

If this key exists the media contains video content.

This key retrieves the location information, if available. The location should be specified according to ISO-6709 standard, under a mp4/3gp box "@xyz". Location with longitude of -90 degrees and latitude of 180 degrees will be retrieved as "-90.0000+180.0000", for instance.

The metadata key to retrieve the mime type of the data source. Some example mime types include: "video/mp4", "audio/mp4", "audio/amr-wb", etc.

The metadata key to retrieve the number of tracks, such as audio, video, text, in the data source, such as a mp4 or 3gpp file.

The metadata key to retrieve the data source title.

If the media contains video, this key retrieves its height.

This key retrieves the video rotation angle in degrees, if available. The video rotation angle may be 0, 90, 180, or 270 degrees.

If the media contains video, this key retrieves its width.

The metadata key to retrieve the information of the writer (such as lyricist) of the data source.

The metadata key to retrieve the year when the data source was created or modified.

This option is used with getFrameAtTime(long, int) to retrieve a frame (not necessarily a key frame) associated with a data source that is located closest to or at the given time.

This option is used with getFrameAtTime(long, int) to retrieve a sync (or key) frame associated with a data source that is located closest to (in time) or at the given time.

This option is used with getFrameAtTime(long, int) to retrieve a sync (or key) frame associated with a data source that is located right after or at the given time.

This option is used with getFrameAtTime(long, int) to retrieve a sync (or key) frame associated with a data source that is located right before or at the given time.

Call this method after setDataSource(). This method retrieves the meta data value associated with the keyCode. The keyCode currently supported is listed below as METADATA_XXX constants. With any other value, it returns a null pointer.

Call this method after setDataSource(). This method finds the optional graphic or album/cover art associated associated with the data source. If there are more than one pictures, (any) one of them is returned.

Call this method after setDataSource(). This method finds a representative frame close to the given time position by considering the given option if possible, and returns it as a bitmap. This is useful for generating a thumbnail for an input data source or just obtain and display a frame at the given time position.

Call this method after setDataSource(). This method finds a representative frame close to the given time position if possible, and returns it as a bitmap. This is useful for generating a thumbnail for an input data source. Call this method if one does not care how the frame is found as long as it is close to the given time; otherwise, please call getFrameAtTime(long, int) .

Call this method after setDataSource(). This method finds a representative frame at any time position if possible, and returns it as a bitmap. This is useful for generating a thumbnail for an input data source. Call this method if one does not care about where the frame is located; otherwise, please call getFrameAtTime(long) or getFrameAtTime(long, int)

Call it when one is done with the object. This method releases the memory allocated internally.

Sets the data source (FileDescriptor) to use. It is the caller's responsibility to close the file descriptor. It is safe to do so as soon as this call returns. Call this method before the rest of the methods in this class. This method may be time-consuming.

Sets the data source (file pathname) to use. Call this method before the rest of the methods in this class. This method may be time-consuming.

Sets the data source (FileDescriptor) to use. It is the caller's responsibility to close the file descriptor. It is safe to do so as soon as this call returns. Call this method before the rest of the methods in this class. This method may be time-consuming.

Sets the data source (URI) to use. Call this method before the rest of the methods in this class. This method may be time-consuming.

Sets the data source as a content Uri. Call this method before the rest of the methods in this class. This method may be time-consuming.

Invoked when the garbage collector has detected that this instance is no longer reachable. The default implementation does nothing, but this method can be overridden to free resources.

Note that objects that override finalize are significantly more expensive than objects that don't. Finalizers may be run a long time after the object is no longer reachable, depending on memory pressure, so it's a bad idea to rely on them for cleanup. Note also that finalizers are run on a single VM-wide finalizer thread, so doing blocking work in a finalizer is a bad idea. A finalizer is usually only necessary for a class that has a native peer and needs to call a native method to destroy that peer. Even then, it's better to provide an explicit close method (and implement Closeable ), and insist that callers manually dispose of instances. This works well for something like files, but less well for something like a BigInteger where typical calling code would have to deal with lots of temporaries. Unfortunately, code that creates lots of temporaries is the worst kind of code from the point of view of the single finalizer thread.

If you must use finalizers, consider at least providing your own ReferenceQueue and having your own thread process that queue.

Unlike constructors, finalizers are not automatically chained. You are responsible for calling super.finalize() yourself.

Uncaught exceptions thrown by finalizers are ignored and do not terminate the finalizer thread. See Effective Java Item 7, "Avoid finalizers" for more.