com.yy.mediaframework.gles

Class EglSurfaceBase

java.lang.Object

com.yy.mediaframework.gles.EglSurfaceBase

All Implemented Interfaces:

IEglSurfaceBase

Direct Known Subclasses:

WindowSurface

public class EglSurfaceBase
extends java.lang.Object
implements IEglSurfaceBase

Common base class for EGL surfaces.

There can be multiple surfaces associated with a single context.

Field Summary

Fields

Modifier and Type	Field and Description
protected EglCore	mEglCore
protected static java.lang.String	TAG

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EglSurfaceBase(EglCore eglCore)

Method Summary

Modifier and Type	Method and Description
void	createOffscreenSurface(int width, int height) Creates an off-screen surface.
void	createWindowSurface(java.lang.Object surface) Creates a window surface.
android.opengl.EGLSurface	getEGLSurface()
int	getHeight() Returns the surface's height, in pixels.
int	getWidth() Returns the surface's width, in pixels.
boolean	isCurrent()
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	makeCurrentReadFrom(java.lang.Object readSurface)
void	releaseEglSurface() Release the EGL surface.
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

Field Detail

TAG

protected static final java.lang.String TAG

See Also:

Constant Field Values

mEglCore

protected EglCore mEglCore

Constructor Detail

EglSurfaceBase

protected EglSurfaceBase(EglCore eglCore)

Method Detail

createWindowSurface

public void createWindowSurface(java.lang.Object surface)

Creates a window surface.

Specified by:

createWindowSurface in interface IEglSurfaceBase

Parameters:

surface - May be a Surface or SurfaceTexture.

createOffscreenSurface

public void createOffscreenSurface(int width,
                                   int height)

Creates an off-screen surface.

Specified by:

createOffscreenSurface in interface IEglSurfaceBase

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.

Specified by:

getWidth in interface IEglSurfaceBase

getHeight

public int getHeight()

Returns the surface's height, in pixels.

Specified by:

getHeight in interface IEglSurfaceBase

releaseEglSurface

public void releaseEglSurface()

Release the EGL surface.

Specified by:

releaseEglSurface in interface IEglSurfaceBase

makeCurrent

public void makeCurrent()

Makes our EGL context and surface current.

Specified by:

makeCurrent in interface IEglSurfaceBase

isCurrent

public boolean isCurrent()

Specified by:

isCurrent in interface IEglSurfaceBase

makeCurrentReadFrom

public void makeCurrentReadFrom(java.lang.Object readSurface)

Specified by:

makeCurrentReadFrom in interface IEglSurfaceBase

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.

Specified by:

swapBuffers in interface IEglSurfaceBase

Returns:

false on failure

setPresentationTime

public void setPresentationTime(long nsecs)

Sends the presentation time stamp to EGL.

Specified by:

setPresentationTime in interface IEglSurfaceBase

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

getEGLSurface

public android.opengl.EGLSurface getEGLSurface()