Package org.webrtc

Class NV21Buffer

java.lang.Object

org.webrtc.NV21Buffer

All Implemented Interfaces:

RefCounted, VideoFrame.Buffer

public class NV21Buffer
extends Object
implements VideoFrame.Buffer

Field Summary

Fields

Modifier and Type	Field	Description
private final byte[]	data
private final int	height
private final RefCountDelegate	refCountDelegate
private final int	width

Constructor Summary

Constructors

Constructor	Description
NV21Buffer(byte[] data, int width, int height, Runnable releaseCallback)

Method Summary

Modifier and Type	Method	Description
VideoFrame.Buffer	cropAndScale(int cropX, int cropY, int cropWidth, int cropHeight, int scaleWidth, int scaleHeight)	Crops a region defined by `cropx`, `cropY`, `cropWidth` and `cropHeight`.
int	getHeight()
int	getWidth()	Resolution of the buffer in pixels.
private static void	nativeCropAndScale(int cropX, int cropY, int cropWidth, int cropHeight, int scaleWidth, int scaleHeight, byte[] src, int srcWidth, int srcHeight, ByteBuffer dstY, int dstStrideY, ByteBuffer dstU, int dstStrideU, ByteBuffer dstV, int dstStrideV)
void	release()	Decreases ref count by one.
void	retain()	Increases ref count by one.
VideoFrame.I420Buffer	toI420()	Returns a memory-backed frame in I420 format.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.webrtc.VideoFrame.Buffer

getBufferType

Field Details

data

private final byte[] data

width

private final int width

height

private final int height

refCountDelegate

private final RefCountDelegate refCountDelegate

Constructor Details

NV21Buffer

public NV21Buffer(byte[] data,
 int width,
 int height,
 @Nullable
 Runnable releaseCallback)

Method Details

getWidth

public int getWidth()

Description copied from interface: VideoFrame.Buffer

Resolution of the buffer in pixels.

Specified by:

getWidth in interface VideoFrame.Buffer

getHeight

public int getHeight()

Specified by:

getHeight in interface VideoFrame.Buffer

toI420

public VideoFrame.I420Buffer toI420()

Description copied from interface: VideoFrame.Buffer

Returns a memory-backed frame in I420 format. If the pixel data is in another format, a conversion will take place. All implementations must provide a fallback to I420 for compatibility with e.g. the internal WebRTC software encoders.

Conversion may fail, for example if reading the pixel data from a texture fails. If the conversion fails, null is returned.

Specified by:

toI420 in interface VideoFrame.Buffer

retain

public void retain()

Description copied from interface: RefCounted

Increases ref count by one.

Specified by:

retain in interface RefCounted

Specified by:

retain in interface VideoFrame.Buffer

release

public void release()

Description copied from interface: RefCounted

Decreases ref count by one. When the ref count reaches zero, resources related to the object will be freed.

Specified by:

release in interface RefCounted

Specified by:

release in interface VideoFrame.Buffer

cropAndScale

public VideoFrame.Buffer cropAndScale(int cropX,
 int cropY,
 int cropWidth,
 int cropHeight,
 int scaleWidth,
 int scaleHeight)

Description copied from interface: VideoFrame.Buffer

Crops a region defined by `cropx`, `cropY`, `cropWidth` and `cropHeight`. Scales it to size `scaleWidth` x `scaleHeight`.

Specified by:

cropAndScale in interface VideoFrame.Buffer

nativeCropAndScale

private static void nativeCropAndScale(int cropX,
 int cropY,
 int cropWidth,
 int cropHeight,
 int scaleWidth,
 int scaleHeight,
 byte[] src,
 int srcWidth,
 int srcHeight,
 ByteBuffer dstY,
 int dstStrideY,
 ByteBuffer dstU,
 int dstStrideU,
 ByteBuffer dstV,
 int dstStrideV)