org.webrtc.ali

Class VideoFrame

java.lang.Object

org.webrtc.ali.VideoFrame

public class VideoFrame
extends java.lang.Object

Java version of webrtc::VideoFrame and webrtc::VideoFrameBuffer. A difference from the C++ version is that no explicit tag is used, and clients are expected to use 'instanceof' to find the right subclass of the buffer. This allows clients to create custom VideoFrame.Buffer in arbitrary format in their custom VideoSources, and then cast it back to the correct subclass in their custom VideoSinks. All implementations must also implement the toI420() function, converting from the underlying representation if necessary. I420 is the most widely accepted format and serves as a fallback for video sinks that can only handle I420, e.g. the internal WebRTC software encoders.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	VideoFrame.Buffer
static interface	VideoFrame.I420Buffer Interface for I420 buffers.
static interface	VideoFrame.TextureBuffer Interface for buffers that are stored as a single texture, either in OES or RGB format.

Constructor Summary

Constructors

Constructor and Description
VideoFrame(VideoFrame.Buffer buffer, int rotation, long timestampNs, android.graphics.Matrix transformMatrix)

Method Summary

Modifier and Type	Method and Description
VideoFrame.Buffer	getBuffer()
int	getHeight()
int	getRotation() Rotation of the frame in degrees.
long	getTimestampNs() Timestamp of the frame in nano seconds.
android.graphics.Matrix	getTransformMatrix() Retrieve the transform matrix associated with the frame.
int	getWidth() Resolution of the frame in pixels.
void	release()
void	retain() Reference counting of the underlying buffer.

Methods inherited from class java.lang.Object

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

Constructor Detail

VideoFrame

public VideoFrame(VideoFrame.Buffer buffer,
                  int rotation,
                  long timestampNs,
                  android.graphics.Matrix transformMatrix)

Method Detail

getBuffer

public VideoFrame.Buffer getBuffer()

getRotation

public int getRotation()

Rotation of the frame in degrees.

getTimestampNs

public long getTimestampNs()

Timestamp of the frame in nano seconds.

getTransformMatrix

public android.graphics.Matrix getTransformMatrix()

Retrieve the transform matrix associated with the frame. This transform matrix maps 2D homogeneous coordinates of the form (s, t, 1) with s and t in the inclusive range [0, 1] to the coordinate that should be used to sample that location from the buffer.

getWidth

public int getWidth()

Resolution of the frame in pixels.

getHeight

public int getHeight()

retain

public void retain()

Reference counting of the underlying buffer.

release

public void release()