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author | Angus Kong <shkong@google.com> | 2013-06-05 17:18:49 -0700 |
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committer | Angus Kong <shkong@google.com> | 2013-06-12 17:25:33 -0700 |
commit | 77f1615264a5641b58e037156f25ad1b30527ef5 (patch) | |
tree | 1caf12afddd4777b04e1e6ee08572b0c53e3a92a /src/com/android/camera/SurfaceTextureRenderer.java | |
parent | 1e2b3f8be10ca20f6807ed71f160d6f6a8ab1c81 (diff) | |
download | android_packages_apps_Snap-77f1615264a5641b58e037156f25ad1b30527ef5.tar.gz android_packages_apps_Snap-77f1615264a5641b58e037156f25ad1b30527ef5.tar.bz2 android_packages_apps_Snap-77f1615264a5641b58e037156f25ad1b30527ef5.zip |
Refactor to separate out EGL part.
Change-Id: I90c37b9e221a80f0d35e6e12ab8850078dc03622
Diffstat (limited to 'src/com/android/camera/SurfaceTextureRenderer.java')
-rw-r--r-- | src/com/android/camera/SurfaceTextureRenderer.java | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/src/com/android/camera/SurfaceTextureRenderer.java b/src/com/android/camera/SurfaceTextureRenderer.java new file mode 100644 index 000000000..66f7aa219 --- /dev/null +++ b/src/com/android/camera/SurfaceTextureRenderer.java @@ -0,0 +1,224 @@ +/* + * Copyright (C) 2011 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.android.camera; + +import android.graphics.SurfaceTexture; +import android.os.Handler; +import android.util.Log; + +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; +import javax.microedition.khronos.opengles.GL10; + +public class SurfaceTextureRenderer { + + public interface FrameDrawer { + public void onDrawFrame(GL10 gl); + } + + private static final String TAG = "CAM_" + SurfaceTextureRenderer.class.getSimpleName(); + private static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098; + + private EGLConfig mEglConfig; + private EGLDisplay mEglDisplay; + private EGLContext mEglContext; + private EGLSurface mEglSurface; + private EGL10 mEgl; + private GL10 mGl; + + private Handler mEglHandler; + private FrameDrawer mFrameDrawer; + + private Object mRenderLock = new Object(); + private Runnable mRenderTask = new Runnable() { + @Override + public void run() { + synchronized (mRenderLock) { + mFrameDrawer.onDrawFrame(mGl); + mEgl.eglSwapBuffers(mEglDisplay, mEglSurface); + mRenderLock.notifyAll(); + } + } + }; + + public class RenderThread extends Thread { + private Boolean mRenderStopped = false; + + @Override + public void run() { + while (true) { + synchronized (mRenderStopped) { + if (mRenderStopped) return; + } + draw(true); + } + } + + public void stopRender() { + synchronized (mRenderStopped) { + mRenderStopped = true; + } + } + } + + public SurfaceTextureRenderer(SurfaceTexture tex, + Handler handler, FrameDrawer renderer) { + mEglHandler = handler; + mFrameDrawer = renderer; + + initialize(tex); + } + + public RenderThread createRenderThread() { + return new RenderThread(); + } + + public void release() { + mEglHandler.post(new Runnable() { + @Override + public void run() { + mEgl.eglDestroySurface(mEglDisplay, mEglSurface); + mEgl.eglDestroyContext(mEglDisplay, mEglContext); + mEgl.eglMakeCurrent(mEglDisplay, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_SURFACE, + EGL10.EGL_NO_CONTEXT); + mEgl.eglTerminate(mEglDisplay); + mEglSurface = null; + mEglContext = null; + mEglDisplay = null; + } + }); + } + + /** + * Posts a render request to the GL thread. + * @param sync set <code>true</code> if the caller needs it to be + * a synchronous call. + */ + public void draw(boolean sync) { + synchronized (mRenderLock) { + mEglHandler.post(mRenderTask); + if (sync) { + try { + mRenderLock.wait(); + } catch (InterruptedException ex) { + Log.v(TAG, "RenderLock.wait() interrupted"); + } + } + } + } + + private void initialize(final SurfaceTexture target) { + mEglHandler.post(new Runnable() { + @Override + public void run() { + mEgl = (EGL10) EGLContext.getEGL(); + mEglDisplay = mEgl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY); + if (mEglDisplay == EGL10.EGL_NO_DISPLAY) { + throw new RuntimeException("eglGetDisplay failed"); + } + int[] version = new int[2]; + if (!mEgl.eglInitialize(mEglDisplay, version)) { + throw new RuntimeException("eglInitialize failed"); + } else { + Log.v(TAG, "EGL version: " + version[0] + '.' + version[1]); + } + int[] attribList = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE }; + mEglConfig = chooseConfig(mEgl, mEglDisplay); + mEglContext = mEgl.eglCreateContext( + mEglDisplay, mEglConfig, EGL10.EGL_NO_CONTEXT, attribList); + + if (mEglContext == null || mEglContext == EGL10.EGL_NO_CONTEXT) { + throw new RuntimeException("failed to createContext"); + } + mEglSurface = mEgl.eglCreateWindowSurface( + mEglDisplay, mEglConfig, target, null); + if (mEglSurface == null || mEglSurface == EGL10.EGL_NO_SURFACE) { + throw new RuntimeException("failed to createWindowSurface"); + } + + if (!mEgl.eglMakeCurrent( + mEglDisplay, mEglSurface, mEglSurface, mEglContext)) { + throw new RuntimeException("failed to eglMakeCurrent"); + } + + mGl = (GL10) mEglContext.getGL(); + } + }); + waitDone(); + } + + private void waitDone() { + final Object lock = new Object(); + synchronized (lock) { + mEglHandler.post(new Runnable() { + @Override + public void run() { + synchronized (lock) { + lock.notifyAll(); + } + } + }); + try { + lock.wait(); + } catch (InterruptedException ex) { + Log.v(TAG, "waitDone() interrupted"); + } + } + } + + 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 final int EGL_OPENGL_ES2_BIT = 4; + private static final int[] CONFIG_SPEC = new int[] { + EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, + EGL10.EGL_RED_SIZE, 8, + EGL10.EGL_GREEN_SIZE, 8, + EGL10.EGL_BLUE_SIZE, 8, + EGL10.EGL_ALPHA_SIZE, 0, + EGL10.EGL_DEPTH_SIZE, 0, + EGL10.EGL_STENCIL_SIZE, 0, + EGL10.EGL_NONE + }; + + private static EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) { + int[] numConfig = new int[1]; + if (!egl.eglChooseConfig(display, CONFIG_SPEC, null, 0, numConfig)) { + throw new IllegalArgumentException("eglChooseConfig failed"); + } + + int numConfigs = numConfig[0]; + if (numConfigs <= 0) { + throw new IllegalArgumentException("No configs match configSpec"); + } + + EGLConfig[] configs = new EGLConfig[numConfigs]; + if (!egl.eglChooseConfig( + display, CONFIG_SPEC, configs, numConfigs, numConfig)) { + throw new IllegalArgumentException("eglChooseConfig#2 failed"); + } + + return configs[0]; + } +} |