JavaI420Buffer (Video Android 7.0.2)

java.lang.Object
- tvi.webrtc.JavaI420Buffer

All Implemented Interfaces:

RefCounted, VideoFrame.Buffer, VideoFrame.I420Buffer
```
public class JavaI420Buffer
extends java.lang.Object
implements VideoFrame.I420Buffer
```
Implementation of VideoFrame.I420Buffer backed by Java direct byte buffers.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`static JavaI420Buffer`	`allocate(int width, int height)` Allocates an empty I420Buffer suitable for an image of the given dimensions.
`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\|.
`static VideoFrame.Buffer`	`cropAndScaleI420(VideoFrame.I420Buffer buffer, int cropX, int cropY, int cropWidth, int cropHeight, int scaleWidth, int scaleHeight)`
`java.nio.ByteBuffer`	`getDataU()` Returns a direct ByteBuffer containing U-plane data.
`java.nio.ByteBuffer`	`getDataV()` Returns a direct ByteBuffer containing V-plane data.
`java.nio.ByteBuffer`	`getDataY()` Returns a direct ByteBuffer containing Y-plane data.
`int`	`getHeight()`
`int`	`getStrideU()`
`int`	`getStrideV()`
`int`	`getStrideY()`
`int`	`getWidth()` Resolution of the buffer in pixels.
`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.
`static JavaI420Buffer`	`wrap(int width, int height, java.nio.ByteBuffer dataY, int strideY, java.nio.ByteBuffer dataU, int strideU, java.nio.ByteBuffer dataV, int strideV, java.lang.Runnable releaseCallback)` Wraps existing ByteBuffers into JavaI420Buffer object without copying the contents.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - wrap
```
public static JavaI420Buffer wrap(int width,
                                  int height,
                                  java.nio.ByteBuffer dataY,
                                  int strideY,
                                  java.nio.ByteBuffer dataU,
                                  int strideU,
                                  java.nio.ByteBuffer dataV,
                                  int strideV,
                                  @Nullable
                                  java.lang.Runnable releaseCallback)
```
    Wraps existing ByteBuffers into JavaI420Buffer object without copying the contents.
  - allocate
```
public static JavaI420Buffer allocate(int width,
                                      int height)
```
    Allocates an empty I420Buffer suitable for an image of the given dimensions.
  - 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
  - getDataY
```
public java.nio.ByteBuffer getDataY()
```
    Description copied from interface: VideoFrame.I420Buffer
    
    Returns a direct ByteBuffer containing Y-plane data. The buffer capacity is at least getStrideY() * getHeight() bytes. The position of the returned buffer is ignored and must be 0. Callers may mutate the ByteBuffer (eg. through relative-read operations), so implementations must return a new ByteBuffer or slice for each call.
    
    Specified by:
    
    getDataY in interface VideoFrame.I420Buffer
  - getDataU
```
public java.nio.ByteBuffer getDataU()
```
    Description copied from interface: VideoFrame.I420Buffer
    
    Returns a direct ByteBuffer containing U-plane data. The buffer capacity is at least getStrideU() * ((getHeight() + 1) / 2) bytes. The position of the returned buffer is ignored and must be 0. Callers may mutate the ByteBuffer (eg. through relative-read operations), so implementations must return a new ByteBuffer or slice for each call.
    
    Specified by:
    
    getDataU in interface VideoFrame.I420Buffer
  - getDataV
```
public java.nio.ByteBuffer getDataV()
```
    Description copied from interface: VideoFrame.I420Buffer
    
    Returns a direct ByteBuffer containing V-plane data. The buffer capacity is at least getStrideV() * ((getHeight() + 1) / 2) bytes. The position of the returned buffer is ignored and must be 0. Callers may mutate the ByteBuffer (eg. through relative-read operations), so implementations must return a new ByteBuffer or slice for each call.
    
    Specified by:
    
    getDataV in interface VideoFrame.I420Buffer
  - getStrideY
```
public int getStrideY()
```
    Specified by:
    
    getStrideY in interface VideoFrame.I420Buffer
  - getStrideU
```
public int getStrideU()
```
    Specified by:
    
    getStrideU in interface VideoFrame.I420Buffer
  - getStrideV
```
public int getStrideV()
```
    Specified by:
    
    getStrideV in interface VideoFrame.I420Buffer
  - 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.
    
    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
  - cropAndScaleI420
```
public static VideoFrame.Buffer cropAndScaleI420(VideoFrame.I420Buffer buffer,
                                                 int cropX,
                                                 int cropY,
                                                 int cropWidth,
                                                 int cropHeight,
                                                 int scaleWidth,
                                                 int scaleHeight)
```

Class JavaI420Buffer

Method Summary

Methods inherited from class java.lang.Object

Method Detail

wrap

allocate

getWidth

getHeight

getDataY

getDataU

getDataV

getStrideY

getStrideU

getStrideV

toI420

retain

release

cropAndScale

cropAndScaleI420