Android Open Source - webrtc-app-mono Vi E Android G L E S20

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The source code is released under:

Copyright (c) 2011, The WebRTC project authors. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditi...

Java Source Code

/*
 *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
 */*from   www .  ja va  2  s  .  co m*/
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

package org.webrtc.videoengine;

import java.util.concurrent.locks.ReentrantLock;

import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.egl.EGLContext;
import javax.microedition.khronos.egl.EGLDisplay;
import javax.microedition.khronos.opengles.GL10;

import android.app.ActivityManager;
import android.content.Context;
import android.content.pm.ConfigurationInfo;
import android.graphics.PixelFormat;
import android.opengl.GLSurfaceView;
import android.util.Log;

public class ViEAndroidGLES20 extends GLSurfaceView
        implements GLSurfaceView.Renderer {
    private static String TAG = "WEBRTC-JR";
    private static final boolean DEBUG = false;
    // True if onSurfaceCreated has been called.
    private boolean surfaceCreated = false;
    private boolean openGLCreated = false;
    // True if NativeFunctionsRegistered has been called.
    private boolean nativeFunctionsRegisted = false;
    private ReentrantLock nativeFunctionLock = new ReentrantLock();
    // Address of Native object that will do the drawing.
    private long nativeObject = 0;
    private int viewWidth = 0;
    private int viewHeight = 0;

    public static boolean UseOpenGL2(Object renderWindow) {
        return ViEAndroidGLES20.class.isInstance(renderWindow);
    }

    public ViEAndroidGLES20(Context context) {
        super(context);
        init(false, 0, 0);
    }

    public ViEAndroidGLES20(Context context, boolean translucent,
            int depth, int stencil) {
        super(context);
        init(translucent, depth, stencil);
    }

    private void init(boolean translucent, int depth, int stencil) {

        // By default, GLSurfaceView() creates a RGB_565 opaque surface.
        // If we want a translucent one, we should change the surface's
        // format here, using PixelFormat.TRANSLUCENT for GL Surfaces
        // is interpreted as any 32-bit surface with alpha by SurfaceFlinger.
        if (translucent) {
            this.getHolder().setFormat(PixelFormat.TRANSLUCENT);
        }

        // Setup the context factory for 2.0 rendering.
        // See ContextFactory class definition below
        setEGLContextFactory(new ContextFactory());

        // We need to choose an EGLConfig that matches the format of
        // our surface exactly. This is going to be done in our
        // custom config chooser. See ConfigChooser class definition
        // below.
        setEGLConfigChooser( translucent ?
                             new ConfigChooser(8, 8, 8, 8, depth, stencil) :
                             new ConfigChooser(5, 6, 5, 0, depth, stencil) );

        // Set the renderer responsible for frame rendering
        this.setRenderer(this);
        this.setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
    }

    private static class ContextFactory implements GLSurfaceView.EGLContextFactory {
        private static int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
        public EGLContext createContext(EGL10 egl, EGLDisplay display, EGLConfig eglConfig) {
            Log.w(TAG, "creating OpenGL ES 2.0 context");
            checkEglError("Before eglCreateContext", egl);
            int[] attrib_list = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE };
            EGLContext context = egl.eglCreateContext(display, eglConfig,
                    EGL10.EGL_NO_CONTEXT, attrib_list);
            checkEglError("After eglCreateContext", egl);
            return context;
        }

        public void destroyContext(EGL10 egl, EGLDisplay display, EGLContext context) {
            egl.eglDestroyContext(display, context);
        }
    }

    private static void checkEglError(String prompt, EGL10 egl) {
        int error;
        while ((error = egl.eglGetError()) != EGL10.EGL_SUCCESS) {
            Log.e(TAG, String.format("%s: EGL error: 0x%x", prompt, error));
        }
    }

    private static class ConfigChooser implements GLSurfaceView.EGLConfigChooser {

        public ConfigChooser(int r, int g, int b, int a, int depth, int stencil) {
            mRedSize = r;
            mGreenSize = g;
            mBlueSize = b;
            mAlphaSize = a;
            mDepthSize = depth;
            mStencilSize = stencil;
        }

        // This EGL config specification is used to specify 2.0 rendering.
        // We use a minimum size of 4 bits for red/green/blue, but will
        // perform actual matching in chooseConfig() below.
        private static int EGL_OPENGL_ES2_BIT = 4;
        private static int[] s_configAttribs2 =
        {
            EGL10.EGL_RED_SIZE, 4,
            EGL10.EGL_GREEN_SIZE, 4,
            EGL10.EGL_BLUE_SIZE, 4,
            EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
            EGL10.EGL_NONE
        };

        public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) {

            // Get the number of minimally matching EGL configurations
            int[] num_config = new int[1];
            egl.eglChooseConfig(display, s_configAttribs2, null, 0, num_config);

            int numConfigs = num_config[0];

            if (numConfigs <= 0) {
                throw new IllegalArgumentException("No configs match configSpec");
            }

            // Allocate then read the array of minimally matching EGL configs
            EGLConfig[] configs = new EGLConfig[numConfigs];
            egl.eglChooseConfig(display, s_configAttribs2, configs, numConfigs, num_config);

            if (DEBUG) {
                printConfigs(egl, display, configs);
            }
            // Now return the "best" one
            return chooseConfig(egl, display, configs);
        }

        public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display,
                EGLConfig[] configs) {
            for(EGLConfig config : configs) {
                int d = findConfigAttrib(egl, display, config,
                        EGL10.EGL_DEPTH_SIZE, 0);
                int s = findConfigAttrib(egl, display, config,
                        EGL10.EGL_STENCIL_SIZE, 0);

                // We need at least mDepthSize and mStencilSize bits
                if (d < mDepthSize || s < mStencilSize)
                    continue;

                // We want an *exact* match for red/green/blue/alpha
                int r = findConfigAttrib(egl, display, config,
                        EGL10.EGL_RED_SIZE, 0);
                int g = findConfigAttrib(egl, display, config,
                            EGL10.EGL_GREEN_SIZE, 0);
                int b = findConfigAttrib(egl, display, config,
                            EGL10.EGL_BLUE_SIZE, 0);
                int a = findConfigAttrib(egl, display, config,
                        EGL10.EGL_ALPHA_SIZE, 0);

                if (r == mRedSize && g == mGreenSize && b == mBlueSize && a == mAlphaSize)
                    return config;
            }
            return null;
        }

        private int findConfigAttrib(EGL10 egl, EGLDisplay display,
                EGLConfig config, int attribute, int defaultValue) {

            if (egl.eglGetConfigAttrib(display, config, attribute, mValue)) {
                return mValue[0];
            }
            return defaultValue;
        }

        private void printConfigs(EGL10 egl, EGLDisplay display,
            EGLConfig[] configs) {
            int numConfigs = configs.length;
            Log.w(TAG, String.format("%d configurations", numConfigs));
            for (int i = 0; i < numConfigs; i++) {
                Log.w(TAG, String.format("Configuration %d:\n", i));
                printConfig(egl, display, configs[i]);
            }
        }

        private void printConfig(EGL10 egl, EGLDisplay display,
                EGLConfig config) {
            int[] attributes = {
                    EGL10.EGL_BUFFER_SIZE,
                    EGL10.EGL_ALPHA_SIZE,
                    EGL10.EGL_BLUE_SIZE,
                    EGL10.EGL_GREEN_SIZE,
                    EGL10.EGL_RED_SIZE,
                    EGL10.EGL_DEPTH_SIZE,
                    EGL10.EGL_STENCIL_SIZE,
                    EGL10.EGL_CONFIG_CAVEAT,
                    EGL10.EGL_CONFIG_ID,
                    EGL10.EGL_LEVEL,
                    EGL10.EGL_MAX_PBUFFER_HEIGHT,
                    EGL10.EGL_MAX_PBUFFER_PIXELS,
                    EGL10.EGL_MAX_PBUFFER_WIDTH,
                    EGL10.EGL_NATIVE_RENDERABLE,
                    EGL10.EGL_NATIVE_VISUAL_ID,
                    EGL10.EGL_NATIVE_VISUAL_TYPE,
                    0x3030, // EGL10.EGL_PRESERVED_RESOURCES,
                    EGL10.EGL_SAMPLES,
                    EGL10.EGL_SAMPLE_BUFFERS,
                    EGL10.EGL_SURFACE_TYPE,
                    EGL10.EGL_TRANSPARENT_TYPE,
                    EGL10.EGL_TRANSPARENT_RED_VALUE,
                    EGL10.EGL_TRANSPARENT_GREEN_VALUE,
                    EGL10.EGL_TRANSPARENT_BLUE_VALUE,
                    0x3039, // EGL10.EGL_BIND_TO_TEXTURE_RGB,
                    0x303A, // EGL10.EGL_BIND_TO_TEXTURE_RGBA,
                    0x303B, // EGL10.EGL_MIN_SWAP_INTERVAL,
                    0x303C, // EGL10.EGL_MAX_SWAP_INTERVAL,
                    EGL10.EGL_LUMINANCE_SIZE,
                    EGL10.EGL_ALPHA_MASK_SIZE,
                    EGL10.EGL_COLOR_BUFFER_TYPE,
                    EGL10.EGL_RENDERABLE_TYPE,
                    0x3042 // EGL10.EGL_CONFORMANT
            };
            String[] names = {
                    "EGL_BUFFER_SIZE",
                    "EGL_ALPHA_SIZE",
                    "EGL_BLUE_SIZE",
                    "EGL_GREEN_SIZE",
                    "EGL_RED_SIZE",
                    "EGL_DEPTH_SIZE",
                    "EGL_STENCIL_SIZE",
                    "EGL_CONFIG_CAVEAT",
                    "EGL_CONFIG_ID",
                    "EGL_LEVEL",
                    "EGL_MAX_PBUFFER_HEIGHT",
                    "EGL_MAX_PBUFFER_PIXELS",
                    "EGL_MAX_PBUFFER_WIDTH",
                    "EGL_NATIVE_RENDERABLE",
                    "EGL_NATIVE_VISUAL_ID",
                    "EGL_NATIVE_VISUAL_TYPE",
                    "EGL_PRESERVED_RESOURCES",
                    "EGL_SAMPLES",
                    "EGL_SAMPLE_BUFFERS",
                    "EGL_SURFACE_TYPE",
                    "EGL_TRANSPARENT_TYPE",
                    "EGL_TRANSPARENT_RED_VALUE",
                    "EGL_TRANSPARENT_GREEN_VALUE",
                    "EGL_TRANSPARENT_BLUE_VALUE",
                    "EGL_BIND_TO_TEXTURE_RGB",
                    "EGL_BIND_TO_TEXTURE_RGBA",
                    "EGL_MIN_SWAP_INTERVAL",
                    "EGL_MAX_SWAP_INTERVAL",
                    "EGL_LUMINANCE_SIZE",
                    "EGL_ALPHA_MASK_SIZE",
                    "EGL_COLOR_BUFFER_TYPE",
                    "EGL_RENDERABLE_TYPE",
                    "EGL_CONFORMANT"
            };
            int[] value = new int[1];
            for (int i = 0; i < attributes.length; i++) {
                int attribute = attributes[i];
                String name = names[i];
                if (egl.eglGetConfigAttrib(display, config, attribute, value)) {
                    Log.w(TAG, String.format("  %s: %d\n", name, value[0]));
                } else {
                    // Log.w(TAG, String.format("  %s: failed\n", name));
                    while (egl.eglGetError() != EGL10.EGL_SUCCESS);
                }
            }
        }

        // Subclasses can adjust these values:
        protected int mRedSize;
        protected int mGreenSize;
        protected int mBlueSize;
        protected int mAlphaSize;
        protected int mDepthSize;
        protected int mStencilSize;
        private int[] mValue = new int[1];
    }

    // IsSupported
    // Return true if this device support Open GL ES 2.0 rendering.
    public static boolean IsSupported(Context context) {
        ActivityManager am =
                (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        ConfigurationInfo info = am.getDeviceConfigurationInfo();
        if(info.reqGlEsVersion >= 0x20000) {
            // Open GL ES 2.0 is supported.
            return true;
        }
        return false;
    }

    public void onDrawFrame(GL10 gl) {
        nativeFunctionLock.lock();
        if(!nativeFunctionsRegisted || !surfaceCreated) {
            nativeFunctionLock.unlock();
            return;
        }

        if(!openGLCreated) {
            if(0 != CreateOpenGLNative(nativeObject, viewWidth, viewHeight)) {
                return; // Failed to create OpenGL
            }
            openGLCreated = true; // Created OpenGL successfully
        }
        DrawNative(nativeObject); // Draw the new frame
        nativeFunctionLock.unlock();
    }

    public void onSurfaceChanged(GL10 gl, int width, int height) {
        surfaceCreated = true;
        viewWidth = width;
        viewHeight = height;

        nativeFunctionLock.lock();
        if(nativeFunctionsRegisted) {
            if(CreateOpenGLNative(nativeObject,width,height) == 0)
                openGLCreated = true;
        }
        nativeFunctionLock.unlock();
    }

    public void onSurfaceCreated(GL10 gl, EGLConfig config) {
    }

    public void RegisterNativeObject(long nativeObject) {
        nativeFunctionLock.lock();
        this.nativeObject = nativeObject;
        nativeFunctionsRegisted = true;
        nativeFunctionLock.unlock();
    }

    public void DeRegisterNativeObject() {
        nativeFunctionLock.lock();
        nativeFunctionsRegisted = false;
        openGLCreated = false;
        this.nativeObject = 0;
        nativeFunctionLock.unlock();
    }

    public void ReDraw() {
        if(surfaceCreated) {
            // Request the renderer to redraw using the render thread context.
            this.requestRender();
        }
    }

    private native int CreateOpenGLNative(long nativeObject,
            int width, int height);
    private native void DrawNative(long nativeObject);

}

Java Source Code List

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