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/*
* Copyright (C) 2013 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 de.pixart.messenger.utils.video;
import android.annotation.TargetApi;
import android.graphics.SurfaceTexture;
import android.opengl.GLES20;
import android.view.Surface;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
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;
@TargetApi(16)
public class OutputSurface implements SurfaceTexture.OnFrameAvailableListener {
private static final int EGL_OPENGL_ES2_BIT = 4;
private static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
private EGL10 mEGL;
private EGLDisplay mEGLDisplay = null;
private EGLContext mEGLContext = null;
private EGLSurface mEGLSurface = null;
private SurfaceTexture mSurfaceTexture;
private Surface mSurface;
private final Object mFrameSyncObject = new Object();
private boolean mFrameAvailable;
private TextureRenderer mTextureRender;
private int mWidth;
private int mHeight;
private int rotateRender = 0;
private ByteBuffer mPixelBuf;
public OutputSurface(int width, int height, int rotate) {
if (width <= 0 || height <= 0) {
throw new IllegalArgumentException();
}
mWidth = width;
mHeight = height;
rotateRender = rotate;
mPixelBuf = ByteBuffer.allocateDirect(mWidth * mHeight * 4);
mPixelBuf.order(ByteOrder.LITTLE_ENDIAN);
eglSetup(width, height);
makeCurrent();
setup();
}
public OutputSurface() {
setup();
}
private void setup() {
mTextureRender = new TextureRenderer(rotateRender);
mTextureRender.surfaceCreated();
mSurfaceTexture = new SurfaceTexture(mTextureRender.getTextureId());
mSurfaceTexture.setOnFrameAvailableListener(this);
mSurface = new Surface(mSurfaceTexture);
}
private void eglSetup(int width, int height) {
mEGL = (EGL10) EGLContext.getEGL();
mEGLDisplay = mEGL.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
if (mEGLDisplay == EGL10.EGL_NO_DISPLAY) {
throw new RuntimeException("unable to get EGL10 display");
}
if (!mEGL.eglInitialize(mEGLDisplay, null)) {
mEGLDisplay = null;
throw new RuntimeException("unable to initialize EGL10");
}
int[] attribList = {
EGL10.EGL_RED_SIZE, 8,
EGL10.EGL_GREEN_SIZE, 8,
EGL10.EGL_BLUE_SIZE, 8,
EGL10.EGL_ALPHA_SIZE, 8,
EGL10.EGL_SURFACE_TYPE, EGL10.EGL_PBUFFER_BIT,
EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL10.EGL_NONE
};
EGLConfig[] configs = new EGLConfig[1];
int[] numConfigs = new int[1];
if (!mEGL.eglChooseConfig(mEGLDisplay, attribList, configs, configs.length, numConfigs)) {
throw new RuntimeException("unable to find RGB888+pbuffer EGL config");
}
int[] attrib_list = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL10.EGL_NONE
};
mEGLContext = mEGL.eglCreateContext(mEGLDisplay, configs[0], EGL10.EGL_NO_CONTEXT, attrib_list);
checkEglError("eglCreateContext");
if (mEGLContext == null) {
throw new RuntimeException("null context");
}
int[] surfaceAttribs = {
EGL10.EGL_WIDTH, width,
EGL10.EGL_HEIGHT, height,
EGL10.EGL_NONE
};
mEGLSurface = mEGL.eglCreatePbufferSurface(mEGLDisplay, configs[0], surfaceAttribs);
checkEglError("eglCreatePbufferSurface");
if (mEGLSurface == null) {
throw new RuntimeException("surface was null");
}
}
public void release() {
if (mEGL != null) {
if (mEGL.eglGetCurrentContext().equals(mEGLContext)) {
mEGL.eglMakeCurrent(mEGLDisplay, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_CONTEXT);
}
mEGL.eglDestroySurface(mEGLDisplay, mEGLSurface);
mEGL.eglDestroyContext(mEGLDisplay, mEGLContext);
}
mSurface.release();
mEGLDisplay = null;
mEGLContext = null;
mEGLSurface = null;
mEGL = null;
mTextureRender = null;
mSurface = null;
mSurfaceTexture = null;
}
public void makeCurrent() {
if (mEGL == null) {
throw new RuntimeException("not configured for makeCurrent");
}
checkEglError("before makeCurrent");
if (!mEGL.eglMakeCurrent(mEGLDisplay, mEGLSurface, mEGLSurface, mEGLContext)) {
throw new RuntimeException("eglMakeCurrent failed");
}
}
public Surface getSurface() {
return mSurface;
}
public void changeFragmentShader(String fragmentShader) {
mTextureRender.changeFragmentShader(fragmentShader);
}
public void awaitNewImage() {
final int TIMEOUT_MS = 5000;
synchronized (mFrameSyncObject) {
while (!mFrameAvailable) {
try {
mFrameSyncObject.wait(TIMEOUT_MS);
if (!mFrameAvailable) {
throw new RuntimeException("Surface frame wait timed out");
}
} catch (InterruptedException ie) {
throw new RuntimeException(ie);
}
}
mFrameAvailable = false;
}
mTextureRender.checkGlError("before updateTexImage");
mSurfaceTexture.updateTexImage();
}
public void drawImage(boolean invert) {
mTextureRender.drawFrame(mSurfaceTexture, invert);
}
@Override
public void onFrameAvailable(SurfaceTexture st) {
synchronized (mFrameSyncObject) {
if (mFrameAvailable) {
throw new RuntimeException("mFrameAvailable already set, frame could be dropped");
}
mFrameAvailable = true;
mFrameSyncObject.notifyAll();
}
}
public ByteBuffer getFrame() {
mPixelBuf.rewind();
GLES20.glReadPixels(0, 0, mWidth, mHeight, GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, mPixelBuf);
return mPixelBuf;
}
private void checkEglError(String msg) {
if (mEGL.eglGetError() != EGL10.EGL_SUCCESS) {
throw new RuntimeException("EGL error encountered (see log)");
}
}
}
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