Android example source code file (EGLImpl.java)

This example Android source code file (EGLImpl.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, egl10, eglconfig, eglcontext, eglcontextimpl, egldisplayimpl, eglimpl, eglsurface, eglsurfaceimpl, object, string, surfaceholder, surfaceview, ui, view

The EGLImpl.java Android example source code

/*
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
**     http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/

package com.google.android.gles_jni;

import javax.microedition.khronos.egl.*;

import android.view.Surface;
import android.view.SurfaceView;
import android.view.SurfaceHolder;
import android.view.View;

public class EGLImpl implements EGL10 {
    private EGLContextImpl mContext = new EGLContextImpl(-1);
    private EGLDisplayImpl mDisplay = new EGLDisplayImpl(-1);
    private EGLSurfaceImpl mSurface = new EGLSurfaceImpl(-1);

    public native boolean     eglInitialize(EGLDisplay display, int[] major_minor);
    public native boolean     eglQueryContext(EGLDisplay display, EGLContext context, int attribute, int[] value);
    public native boolean     eglQuerySurface(EGLDisplay display, EGLSurface surface, int attribute, int[] value);
    public native boolean     eglChooseConfig(EGLDisplay display, int[] attrib_list, EGLConfig[] configs, int config_size, int[] num_config);
    public native boolean     eglGetConfigAttrib(EGLDisplay display, EGLConfig config, int attribute, int[] value);
    public native boolean     eglGetConfigs(EGLDisplay display, EGLConfig[] configs, int config_size, int[] num_config);
    public native int         eglGetError();
    public native boolean     eglDestroyContext(EGLDisplay display, EGLContext context);
    public native boolean     eglDestroySurface(EGLDisplay display, EGLSurface surface);
    public native boolean     eglMakeCurrent(EGLDisplay display, EGLSurface draw, EGLSurface read, EGLContext context);
    public native String      eglQueryString(EGLDisplay display, int name);
    public native boolean     eglSwapBuffers(EGLDisplay display, EGLSurface surface);
    public native boolean     eglTerminate(EGLDisplay display);
    public native boolean     eglCopyBuffers(EGLDisplay display, EGLSurface surface, Object native_pixmap);
    public native boolean     eglWaitGL();
    public native boolean     eglWaitNative(int engine, Object bindTarget);

    public EGLContext eglCreateContext(EGLDisplay display, EGLConfig config, EGLContext share_context, int[] attrib_list) {
        int eglContextId = _eglCreateContext(display, config, share_context, attrib_list);
        if (eglContextId == 0) {
            return EGL10.EGL_NO_CONTEXT;
        }
        return new EGLContextImpl( eglContextId );
    }

    public EGLSurface eglCreatePbufferSurface(EGLDisplay display, EGLConfig config, int[] attrib_list) {
        int eglSurfaceId = _eglCreatePbufferSurface(display, config, attrib_list);
        if (eglSurfaceId == 0) {
            return EGL10.EGL_NO_SURFACE;
        }
        return new EGLSurfaceImpl( eglSurfaceId );
    }

    public EGLSurface eglCreatePixmapSurface(EGLDisplay display, EGLConfig config, Object native_pixmap, int[] attrib_list) {
        EGLSurfaceImpl sur = new EGLSurfaceImpl();
        _eglCreatePixmapSurface(sur, display, config, native_pixmap, attrib_list);
        if (sur.mEGLSurface == 0) {
            return EGL10.EGL_NO_SURFACE;
        }
        return sur;
    }

    public EGLSurface eglCreateWindowSurface(EGLDisplay display, EGLConfig config, Object native_window, int[] attrib_list) {
        Surface sur;
        if (native_window instanceof SurfaceView) {
            SurfaceView surfaceView = (SurfaceView)native_window;
            sur = surfaceView.getHolder().getSurface();
        } else if (native_window instanceof SurfaceHolder) {
            SurfaceHolder holder = (SurfaceHolder)native_window;
            sur = holder.getSurface();
        } else {
            throw new java.lang.UnsupportedOperationException(
                "eglCreateWindowSurface() can only be called with an instance of " +
                "SurfaceView or SurfaceHolder at the moment, this will be fixed later.");
        }
        int eglSurfaceId = _eglCreateWindowSurface(display, config, sur, attrib_list);
        if (eglSurfaceId == 0) {
            return EGL10.EGL_NO_SURFACE;
        }
        return new EGLSurfaceImpl( eglSurfaceId );
    }

    public synchronized EGLDisplay eglGetDisplay(Object native_display) {
        int value = _eglGetDisplay(native_display);
        if (value == 0) {
            return EGL10.EGL_NO_DISPLAY;
        }
        if (mDisplay.mEGLDisplay != value)
            mDisplay = new EGLDisplayImpl(value);
        return mDisplay;
    }

    public synchronized EGLContext eglGetCurrentContext() {
        int value = _eglGetCurrentContext();
        if (value == 0) {
            return EGL10.EGL_NO_CONTEXT;
        }
        if (mContext.mEGLContext != value)
            mContext = new EGLContextImpl(value);
        return mContext;
    }

    public synchronized EGLDisplay eglGetCurrentDisplay() {
        int value = _eglGetCurrentDisplay();
        if (value == 0) {
            return EGL10.EGL_NO_DISPLAY;
        }
        if (mDisplay.mEGLDisplay != value)
            mDisplay = new EGLDisplayImpl(value);
        return mDisplay;
    }

    public synchronized EGLSurface eglGetCurrentSurface(int readdraw) {
        int value = _eglGetCurrentSurface(readdraw);
        if (value == 0) {
            return EGL10.EGL_NO_SURFACE;
        }
        if (mSurface.mEGLSurface != value)
            mSurface = new EGLSurfaceImpl(value);
        return mSurface;
    }

    private native int _eglCreateContext(EGLDisplay display, EGLConfig config, EGLContext share_context, int[] attrib_list);
    private native int _eglCreatePbufferSurface(EGLDisplay display, EGLConfig config, int[] attrib_list);
    private native void _eglCreatePixmapSurface(EGLSurface sur, EGLDisplay display, EGLConfig config, Object native_pixmap, int[] attrib_list);
    private native int _eglCreateWindowSurface(EGLDisplay display, EGLConfig config, Object native_window, int[] attrib_list);
    private native int _eglGetDisplay(Object native_display);
    private native int _eglGetCurrentContext();
    private native int _eglGetCurrentDisplay();
    private native int _eglGetCurrentSurface(int readdraw);

    native private static void _nativeClassInit();
    static { _nativeClassInit(); }
}