sdk/android/src/java/org/webrtc/EglBase10.java - src/webrtc - Git at Google

 /*
  *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  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;

 import android.graphics.Canvas;
 import android.graphics.Rect;
 import android.graphics.SurfaceTexture;
 import android.view.Surface;
 import android.view.SurfaceHolder;

 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.egl.EGLSurface;

 /**
  * Holds EGL state and utility methods for handling an egl 1.0 EGLContext, an EGLDisplay,
  * and an EGLSurface.
  */
 class EglBase10 extends EglBase {
   // This constant is taken from EGL14.EGL_CONTEXT_CLIENT_VERSION.
   private static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098;

   private final EGL10 egl;
   private EGLContext eglContext;
   private EGLConfig eglConfig;
   private EGLDisplay eglDisplay;
   private EGLSurface eglSurface = EGL10.EGL_NO_SURFACE;

   // EGL wrapper for an actual EGLContext.
   public static class Context extends EglBase.Context {
     private final EGLContext eglContext;

     public Context(EGLContext eglContext) {
       this.eglContext = eglContext;
     }
   }

   // Create a new context with the specified config type, sharing data with sharedContext.
   public EglBase10(Context sharedContext, int[] configAttributes) {
     this.egl = (EGL10) EGLContext.getEGL();
     eglDisplay = getEglDisplay();
     eglConfig = getEglConfig(eglDisplay, configAttributes);
     eglContext = createEglContext(sharedContext, eglDisplay, eglConfig);
   }

   @Override
   public void createSurface(Surface surface) {
     /**
      * We have to wrap Surface in a SurfaceHolder because for some reason eglCreateWindowSurface
      * couldn't actually take a Surface object until API 17. Older versions fortunately just call
      * SurfaceHolder.getSurface(), so we'll do that. No other methods are relevant.
      */
     class FakeSurfaceHolder implements SurfaceHolder {
       private final Surface surface;

       FakeSurfaceHolder(Surface surface) {
         this.surface = surface;
       }

       @Override
       public void addCallback(Callback callback) {}

       @Override
       public void removeCallback(Callback callback) {}

       @Override
       public boolean isCreating() {
         return false;
       }

       @Deprecated
       @Override
       public void setType(int i) {}

       @Override
       public void setFixedSize(int i, int i2) {}

       @Override
       public void setSizeFromLayout() {}

       @Override
       public void setFormat(int i) {}

       @Override
       public void setKeepScreenOn(boolean b) {}

       @Override
       public Canvas lockCanvas() {
         return null;
       }

       @Override
       public Canvas lockCanvas(Rect rect) {
         return null;
       }

       @Override
       public void unlockCanvasAndPost(Canvas canvas) {}

       @Override
       public Rect getSurfaceFrame() {
         return null;
       }

       @Override
       public Surface getSurface() {
         return surface;
       }
     }

     createSurfaceInternal(new FakeSurfaceHolder(surface));
   }

   // Create EGLSurface from the Android SurfaceTexture.
   @Override
   public void createSurface(SurfaceTexture surfaceTexture) {
     createSurfaceInternal(surfaceTexture);
   }

   // Create EGLSurface from either a SurfaceHolder or a SurfaceTexture.
   private void createSurfaceInternal(Object nativeWindow) {
     if (!(nativeWindow instanceof SurfaceHolder) && !(nativeWindow instanceof SurfaceTexture)) {
       throw new IllegalStateException("Input must be either a SurfaceHolder or SurfaceTexture");
     }
     checkIsNotReleased();
     if (eglSurface != EGL10.EGL_NO_SURFACE) {
       throw new RuntimeException("Already has an EGLSurface");
     }
     int[] surfaceAttribs = {EGL10.EGL_NONE};
     eglSurface = egl.eglCreateWindowSurface(eglDisplay, eglConfig, nativeWindow, surfaceAttribs);
     if (eglSurface == EGL10.EGL_NO_SURFACE) {
       throw new RuntimeException(
           "Failed to create window surface: 0x" + Integer.toHexString(egl.eglGetError()));
     }
   }

   // Create dummy 1x1 pixel buffer surface so the context can be made current.
   @Override
   public void createDummyPbufferSurface() {
     createPbufferSurface(1, 1);
   }

   @Override
   public void createPbufferSurface(int width, int height) {
     checkIsNotReleased();
     if (eglSurface != EGL10.EGL_NO_SURFACE) {
       throw new RuntimeException("Already has an EGLSurface");
     }
     int[] surfaceAttribs = {EGL10.EGL_WIDTH, width, EGL10.EGL_HEIGHT, height, EGL10.EGL_NONE};
     eglSurface = egl.eglCreatePbufferSurface(eglDisplay, eglConfig, surfaceAttribs);
     if (eglSurface == EGL10.EGL_NO_SURFACE) {
       throw new RuntimeException("Failed to create pixel buffer surface with size " + width + "x"
           + height + ": 0x" + Integer.toHexString(egl.eglGetError()));
     }
   }

   @Override
   public org.webrtc.EglBase.Context getEglBaseContext() {
     return new EglBase10.Context(eglContext);
   }

   @Override
   public boolean hasSurface() {
     return eglSurface != EGL10.EGL_NO_SURFACE;
   }

   @Override
   public int surfaceWidth() {
     final int widthArray[] = new int[1];
     egl.eglQuerySurface(eglDisplay, eglSurface, EGL10.EGL_WIDTH, widthArray);
     return widthArray[0];
   }

   @Override
   public int surfaceHeight() {
     final int heightArray[] = new int[1];
     egl.eglQuerySurface(eglDisplay, eglSurface, EGL10.EGL_HEIGHT, heightArray);
     return heightArray[0];
   }

   @Override
   public void releaseSurface() {
     if (eglSurface != EGL10.EGL_NO_SURFACE) {
       egl.eglDestroySurface(eglDisplay, eglSurface);
       eglSurface = EGL10.EGL_NO_SURFACE;
     }
   }

   private void checkIsNotReleased() {
     if (eglDisplay == EGL10.EGL_NO_DISPLAY || eglContext == EGL10.EGL_NO_CONTEXT
         || eglConfig == null) {
       throw new RuntimeException("This object has been released");
     }
   }

   @Override
   public void release() {
     checkIsNotReleased();
     releaseSurface();
     detachCurrent();
     egl.eglDestroyContext(eglDisplay, eglContext);
     egl.eglTerminate(eglDisplay);
     eglContext = EGL10.EGL_NO_CONTEXT;
     eglDisplay = EGL10.EGL_NO_DISPLAY;
     eglConfig = null;
   }

   @Override
   public void makeCurrent() {
     checkIsNotReleased();
     if (eglSurface == EGL10.EGL_NO_SURFACE) {
       throw new RuntimeException("No EGLSurface - can't make current");
     }
     synchronized (EglBase.lock) {
       if (!egl.eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext)) {
         throw new RuntimeException(
             "eglMakeCurrent failed: 0x" + Integer.toHexString(egl.eglGetError()));
       }
     }
   }

   // Detach the current EGL context, so that it can be made current on another thread.
   @Override
   public void detachCurrent() {
     synchronized (EglBase.lock) {
       if (!egl.eglMakeCurrent(
               eglDisplay, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_CONTEXT)) {
         throw new RuntimeException(
             "eglDetachCurrent failed: 0x" + Integer.toHexString(egl.eglGetError()));
       }
     }
   }

   @Override
   public void swapBuffers() {
     checkIsNotReleased();
     if (eglSurface == EGL10.EGL_NO_SURFACE) {
       throw new RuntimeException("No EGLSurface - can't swap buffers");
     }
     synchronized (EglBase.lock) {
       egl.eglSwapBuffers(eglDisplay, eglSurface);
     }
   }

   @Override
   public void swapBuffers(long timeStampNs) {
     // Setting presentation time is not supported for EGL 1.0.
     swapBuffers();
   }

   // Return an EGLDisplay, or die trying.
   private EGLDisplay getEglDisplay() {
     EGLDisplay eglDisplay = egl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
     if (eglDisplay == EGL10.EGL_NO_DISPLAY) {
       throw new RuntimeException(
           "Unable to get EGL10 display: 0x" + Integer.toHexString(egl.eglGetError()));
     }
     int[] version = new int[2];
     if (!egl.eglInitialize(eglDisplay, version)) {
       throw new RuntimeException(
           "Unable to initialize EGL10: 0x" + Integer.toHexString(egl.eglGetError()));
     }
     return eglDisplay;
   }

   // Return an EGLConfig, or die trying.
   private EGLConfig getEglConfig(EGLDisplay eglDisplay, int[] configAttributes) {
     EGLConfig[] configs = new EGLConfig[1];
     int[] numConfigs = new int[1];
     if (!egl.eglChooseConfig(eglDisplay, configAttributes, configs, configs.length, numConfigs)) {
       throw new RuntimeException(
           "eglChooseConfig failed: 0x" + Integer.toHexString(egl.eglGetError()));
     }
     if (numConfigs[0] <= 0) {
       throw new RuntimeException("Unable to find any matching EGL config");
     }
     final EGLConfig eglConfig = configs[0];
     if (eglConfig == null) {
       throw new RuntimeException("eglChooseConfig returned null");
     }
     return eglConfig;
   }

   // Return an EGLConfig, or die trying.
   private EGLContext createEglContext(
       Context sharedContext, EGLDisplay eglDisplay, EGLConfig eglConfig) {
     if (sharedContext != null && sharedContext.eglContext == EGL10.EGL_NO_CONTEXT) {
       throw new RuntimeException("Invalid sharedContext");
     }
     int[] contextAttributes = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE};
     EGLContext rootContext =
         sharedContext == null ? EGL10.EGL_NO_CONTEXT : sharedContext.eglContext;
     final EGLContext eglContext;
     synchronized (EglBase.lock) {
       eglContext = egl.eglCreateContext(eglDisplay, eglConfig, rootContext, contextAttributes);
     }
     if (eglContext == EGL10.EGL_NO_CONTEXT) {
       throw new RuntimeException(
           "Failed to create EGL context: 0x" + Integer.toHexString(egl.eglGetError()));
     }
     return eglContext;
   }
 }
	/*
	* Copyright 2015 The WebRTC project authors. All Rights Reserved.
	*
	* 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;

	import android.graphics.Canvas;
	import android.graphics.Rect;
	import android.graphics.SurfaceTexture;
	import android.view.Surface;
	import android.view.SurfaceHolder;

	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.egl.EGLSurface;

	/**
	* Holds EGL state and utility methods for handling an egl 1.0 EGLContext, an EGLDisplay,
	* and an EGLSurface.
	*/
	class EglBase10 extends EglBase {
	// This constant is taken from EGL14.EGL_CONTEXT_CLIENT_VERSION.
	private static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098;

	private final EGL10 egl;
	private EGLContext eglContext;
	private EGLConfig eglConfig;
	private EGLDisplay eglDisplay;
	private EGLSurface eglSurface = EGL10.EGL_NO_SURFACE;

	// EGL wrapper for an actual EGLContext.
	public static class Context extends EglBase.Context {
	private final EGLContext eglContext;

	public Context(EGLContext eglContext) {
	this.eglContext = eglContext;
	}
	}

	// Create a new context with the specified config type, sharing data with sharedContext.
	public EglBase10(Context sharedContext, int[] configAttributes) {
	this.egl = (EGL10) EGLContext.getEGL();
	eglDisplay = getEglDisplay();
	eglConfig = getEglConfig(eglDisplay, configAttributes);
	eglContext = createEglContext(sharedContext, eglDisplay, eglConfig);
	}

	@Override
	public void createSurface(Surface surface) {
	/**
	* We have to wrap Surface in a SurfaceHolder because for some reason eglCreateWindowSurface
	* couldn't actually take a Surface object until API 17. Older versions fortunately just call
	* SurfaceHolder.getSurface(), so we'll do that. No other methods are relevant.
	*/
	class FakeSurfaceHolder implements SurfaceHolder {
	private final Surface surface;

	FakeSurfaceHolder(Surface surface) {
	this.surface = surface;
	}

	@Override
	public void addCallback(Callback callback) {}

	@Override
	public void removeCallback(Callback callback) {}

	@Override
	public boolean isCreating() {
	return false;
	}

	@Deprecated
	@Override
	public void setType(int i) {}

	@Override
	public void setFixedSize(int i, int i2) {}

	@Override
	public void setSizeFromLayout() {}

	@Override
	public void setFormat(int i) {}

	@Override
	public void setKeepScreenOn(boolean b) {}

	@Override
	public Canvas lockCanvas() {
	return null;
	}

	@Override
	public Canvas lockCanvas(Rect rect) {
	return null;
	}

	@Override
	public void unlockCanvasAndPost(Canvas canvas) {}

	@Override
	public Rect getSurfaceFrame() {
	return null;
	}

	@Override
	public Surface getSurface() {
	return surface;
	}
	}

	createSurfaceInternal(new FakeSurfaceHolder(surface));
	}

	// Create EGLSurface from the Android SurfaceTexture.
	@Override
	public void createSurface(SurfaceTexture surfaceTexture) {
	createSurfaceInternal(surfaceTexture);
	}

	// Create EGLSurface from either a SurfaceHolder or a SurfaceTexture.
	private void createSurfaceInternal(Object nativeWindow) {
	if (!(nativeWindow instanceof SurfaceHolder) && !(nativeWindow instanceof SurfaceTexture)) {
	throw new IllegalStateException("Input must be either a SurfaceHolder or SurfaceTexture");
	}
	checkIsNotReleased();
	if (eglSurface != EGL10.EGL_NO_SURFACE) {
	throw new RuntimeException("Already has an EGLSurface");
	}
	int[] surfaceAttribs = {EGL10.EGL_NONE};
	eglSurface = egl.eglCreateWindowSurface(eglDisplay, eglConfig, nativeWindow, surfaceAttribs);
	if (eglSurface == EGL10.EGL_NO_SURFACE) {
	throw new RuntimeException(
	"Failed to create window surface: 0x" + Integer.toHexString(egl.eglGetError()));
	}
	}

	// Create dummy 1x1 pixel buffer surface so the context can be made current.
	@Override
	public void createDummyPbufferSurface() {
	createPbufferSurface(1, 1);
	}

	@Override
	public void createPbufferSurface(int width, int height) {
	checkIsNotReleased();
	if (eglSurface != EGL10.EGL_NO_SURFACE) {
	throw new RuntimeException("Already has an EGLSurface");
	}
	int[] surfaceAttribs = {EGL10.EGL_WIDTH, width, EGL10.EGL_HEIGHT, height, EGL10.EGL_NONE};
	eglSurface = egl.eglCreatePbufferSurface(eglDisplay, eglConfig, surfaceAttribs);
	if (eglSurface == EGL10.EGL_NO_SURFACE) {
	throw new RuntimeException("Failed to create pixel buffer surface with size " + width + "x"
	+ height + ": 0x" + Integer.toHexString(egl.eglGetError()));
	}
	}

	@Override
	public org.webrtc.EglBase.Context getEglBaseContext() {
	return new EglBase10.Context(eglContext);
	}

	@Override
	public boolean hasSurface() {
	return eglSurface != EGL10.EGL_NO_SURFACE;
	}

	@Override
	public int surfaceWidth() {
	final int widthArray[] = new int[1];
	egl.eglQuerySurface(eglDisplay, eglSurface, EGL10.EGL_WIDTH, widthArray);
	return widthArray[0];
	}

	@Override
	public int surfaceHeight() {
	final int heightArray[] = new int[1];
	egl.eglQuerySurface(eglDisplay, eglSurface, EGL10.EGL_HEIGHT, heightArray);
	return heightArray[0];
	}

	@Override
	public void releaseSurface() {
	if (eglSurface != EGL10.EGL_NO_SURFACE) {
	egl.eglDestroySurface(eglDisplay, eglSurface);
	eglSurface = EGL10.EGL_NO_SURFACE;
	}
	}

	private void checkIsNotReleased() {
	if (eglDisplay == EGL10.EGL_NO_DISPLAY \|\| eglContext == EGL10.EGL_NO_CONTEXT
	\|\| eglConfig == null) {
	throw new RuntimeException("This object has been released");
	}
	}

	@Override
	public void release() {
	checkIsNotReleased();
	releaseSurface();
	detachCurrent();
	egl.eglDestroyContext(eglDisplay, eglContext);
	egl.eglTerminate(eglDisplay);
	eglContext = EGL10.EGL_NO_CONTEXT;
	eglDisplay = EGL10.EGL_NO_DISPLAY;
	eglConfig = null;
	}

	@Override
	public void makeCurrent() {
	checkIsNotReleased();
	if (eglSurface == EGL10.EGL_NO_SURFACE) {
	throw new RuntimeException("No EGLSurface - can't make current");
	}
	synchronized (EglBase.lock) {
	if (!egl.eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext)) {
	throw new RuntimeException(
	"eglMakeCurrent failed: 0x" + Integer.toHexString(egl.eglGetError()));
	}
	}
	}

	// Detach the current EGL context, so that it can be made current on another thread.
	@Override
	public void detachCurrent() {
	synchronized (EglBase.lock) {
	if (!egl.eglMakeCurrent(
	eglDisplay, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_CONTEXT)) {
	throw new RuntimeException(
	"eglDetachCurrent failed: 0x" + Integer.toHexString(egl.eglGetError()));
	}
	}
	}

	@Override
	public void swapBuffers() {
	checkIsNotReleased();
	if (eglSurface == EGL10.EGL_NO_SURFACE) {
	throw new RuntimeException("No EGLSurface - can't swap buffers");
	}
	synchronized (EglBase.lock) {
	egl.eglSwapBuffers(eglDisplay, eglSurface);
	}
	}

	@Override
	public void swapBuffers(long timeStampNs) {
	// Setting presentation time is not supported for EGL 1.0.
	swapBuffers();
	}

	// Return an EGLDisplay, or die trying.
	private EGLDisplay getEglDisplay() {
	EGLDisplay eglDisplay = egl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
	if (eglDisplay == EGL10.EGL_NO_DISPLAY) {
	throw new RuntimeException(
	"Unable to get EGL10 display: 0x" + Integer.toHexString(egl.eglGetError()));
	}
	int[] version = new int[2];
	if (!egl.eglInitialize(eglDisplay, version)) {
	throw new RuntimeException(
	"Unable to initialize EGL10: 0x" + Integer.toHexString(egl.eglGetError()));
	}
	return eglDisplay;
	}

	// Return an EGLConfig, or die trying.
	private EGLConfig getEglConfig(EGLDisplay eglDisplay, int[] configAttributes) {
	EGLConfig[] configs = new EGLConfig[1];
	int[] numConfigs = new int[1];
	if (!egl.eglChooseConfig(eglDisplay, configAttributes, configs, configs.length, numConfigs)) {
	throw new RuntimeException(
	"eglChooseConfig failed: 0x" + Integer.toHexString(egl.eglGetError()));
	}
	if (numConfigs[0] <= 0) {
	throw new RuntimeException("Unable to find any matching EGL config");
	}
	final EGLConfig eglConfig = configs[0];
	if (eglConfig == null) {
	throw new RuntimeException("eglChooseConfig returned null");
	}
	return eglConfig;
	}

	// Return an EGLConfig, or die trying.
	private EGLContext createEglContext(
	Context sharedContext, EGLDisplay eglDisplay, EGLConfig eglConfig) {
	if (sharedContext != null && sharedContext.eglContext == EGL10.EGL_NO_CONTEXT) {
	throw new RuntimeException("Invalid sharedContext");
	}
	int[] contextAttributes = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE};
	EGLContext rootContext =
	sharedContext == null ? EGL10.EGL_NO_CONTEXT : sharedContext.eglContext;
	final EGLContext eglContext;
	synchronized (EglBase.lock) {
	eglContext = egl.eglCreateContext(eglDisplay, eglConfig, rootContext, contextAttributes);
	}
	if (eglContext == EGL10.EGL_NO_CONTEXT) {
	throw new RuntimeException(
	"Failed to create EGL context: 0x" + Integer.toHexString(egl.eglGetError()));
	}
	return eglContext;
	}
	}