EglSurfaceBase (banuba_sdk API)

java.lang.Object
- com.banuba.sdk.internal.gl.EglSurfaceBase

Direct Known Subclasses:

OffscreenSurface, WindowSurface
```
public class EglSurfaceBase
extends java.lang.Object
```
Common base class for EGL surfaces.
There can be multiple surfaces associated with a single context.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`createOffscreenSurface(int width, int height)`	Creates an off-screen surface.
`int`	`getHeight()`	Returns the surface's height, in pixels.
`int`	`getWidth()`	Returns the surface's width, in pixels.
`void`	`makeCurrent()`	Makes our EGL context and surface current.
`void`	`makeCurrentReadFrom(EglSurfaceBase readSurface)`	Makes our EGL context and surface current for drawing, using the supplied surface for reading.
`void`	`saveFrame(java.io.File file)`	Saves the EGL surface to a file.
`void`	`setPresentationTime(long nsecs)`	Sends the presentation time stamp to EGL.
`boolean`	`swapBuffers()`	Calls eglSwapBuffers.

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

- Method Detail
  - createOffscreenSurface
```
public void createOffscreenSurface(int width,
                                   int height)
```
    Creates an off-screen surface.
  - getWidth
```
public int getWidth()
```
    Returns the surface's width, in pixels.
    If this is called on a window surface, and the underlying surface is in the process of changing size, we may not see the new size right away (e.g. in the "surfaceChanged" callback). The size should match after the next buffer swap.
  - getHeight
```
public int getHeight()
```
    Returns the surface's height, in pixels.
  - makeCurrent
```
public void makeCurrent()
```
    Makes our EGL context and surface current.
  - makeCurrentReadFrom
```
public void makeCurrentReadFrom(EglSurfaceBase readSurface)
```
    Makes our EGL context and surface current for drawing, using the supplied surface for reading.
  - swapBuffers
```
public boolean swapBuffers()
```
    Calls eglSwapBuffers. Use this to "publish" the current frame.
    
    Returns:
    
    false on failure
  - setPresentationTime
```
public void setPresentationTime(long nsecs)
```
    Sends the presentation time stamp to EGL.
    
    Parameters:
    
    nsecs - Timestamp, in nanoseconds.
  - saveFrame
```
public void saveFrame(java.io.File file)
               throws java.io.IOException
```
    Saves the EGL surface to a file.
    Expects that this object's EGL surface is current.
    
    Throws:
    
    java.io.IOException