1 files changed, 136 insertions, 0 deletions
diff --git a/src/main/java/de/pixart/messenger/utils/video/InputSurface.java b/src/main/java/de/pixart/messenger/utils/video/InputSurface.java
new file mode 100644
index 000000000..3376b4b87
--- /dev/null
+++ b/src/main/java/de/pixart/messenger/utils/video/InputSurface.java
@@ -0,0 +1,136 @@
+/*
+ * 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.opengl.EGL14;
+import android.opengl.EGLConfig;
+import android.opengl.EGLContext;
+import android.opengl.EGLDisplay;
+import android.opengl.EGLExt;
+import android.opengl.EGLSurface;
+import android.os.Build;
+import android.view.Surface;
+
+@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
+public class InputSurface {
+    private static final boolean VERBOSE = false;
+    private static final int EGL_RECORDABLE_ANDROID = 0x3142;
+    private static final int EGL_OPENGL_ES2_BIT = 4;
+    private EGLDisplay mEGLDisplay;
+    private EGLContext mEGLContext;
+    private EGLSurface mEGLSurface;
+    private Surface mSurface;
+
+    public InputSurface(Surface surface) {
+        if (surface == null) {
+            throw new NullPointerException();
+        }
+        mSurface = surface;
+        eglSetup();
+    }
+
+    private void eglSetup() {
+        mEGLDisplay = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY);
+        if (mEGLDisplay == EGL14.EGL_NO_DISPLAY) {
+            throw new RuntimeException("unable to get EGL14 display");
+        }
+        int[] version = new int[2];
+        if (!EGL14.eglInitialize(mEGLDisplay, version, 0, version, 1)) {
+            mEGLDisplay = null;
+            throw new RuntimeException("unable to initialize EGL14");
+        }
+
+        int[] attribList = {
+                EGL14.EGL_RED_SIZE, 8,
+                EGL14.EGL_GREEN_SIZE, 8,
+                EGL14.EGL_BLUE_SIZE, 8,
+                EGL14.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+                EGL_RECORDABLE_ANDROID, 1,
+                EGL14.EGL_NONE
+        };
+        EGLConfig[] configs = new EGLConfig[1];
+        int[] numConfigs = new int[1];
+        if (!EGL14.eglChooseConfig(mEGLDisplay, attribList, 0, configs, 0, configs.length,
+                numConfigs, 0)) {
+            throw new RuntimeException("unable to find RGB888+recordable ES2 EGL config");
+        }
+
+        int[] attrib_list = {
+                EGL14.EGL_CONTEXT_CLIENT_VERSION, 2,
+                EGL14.EGL_NONE
+        };
+
+        mEGLContext = EGL14.eglCreateContext(mEGLDisplay, configs[0], EGL14.EGL_NO_CONTEXT, attrib_list, 0);
+        checkEglError("eglCreateContext");
+        if (mEGLContext == null) {
+            throw new RuntimeException("null context");
+        }
+
+        int[] surfaceAttribs = {
+                EGL14.EGL_NONE
+        };
+        mEGLSurface = EGL14.eglCreateWindowSurface(mEGLDisplay, configs[0], mSurface,
+                surfaceAttribs, 0);
+        checkEglError("eglCreateWindowSurface");
+        if (mEGLSurface == null) {
+            throw new RuntimeException("surface was null");
+        }
+    }
+
+    public void release() {
+        if (EGL14.eglGetCurrentContext().equals(mEGLContext)) {
+            EGL14.eglMakeCurrent(mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT);
+        }
+        EGL14.eglDestroySurface(mEGLDisplay, mEGLSurface);
+        EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
+        mSurface.release();
+        mEGLDisplay = null;
+        mEGLContext = null;
+        mEGLSurface = null;
+        mSurface = null;
+    }
+
+    public void makeCurrent() {
+        if (!EGL14.eglMakeCurrent(mEGLDisplay, mEGLSurface, mEGLSurface, mEGLContext)) {
+            throw new RuntimeException("eglMakeCurrent failed");
+        }
+    }
+
+    public boolean swapBuffers() {
+        return EGL14.eglSwapBuffers(mEGLDisplay, mEGLSurface);
+    }
+
+    public Surface getSurface() {
+        return mSurface;
+    }
+
+    public void setPresentationTime(long nsecs) {
+        EGLExt.eglPresentationTimeANDROID(mEGLDisplay, mEGLSurface, nsecs);
+    }
+
+    private void checkEglError(String msg) {
+        boolean failed = false;
+        int error;
+        while ((error = EGL14.eglGetError()) != EGL14.EGL_SUCCESS) {
+            failed = true;
+        }
+        if (failed) {
+            throw new RuntimeException("EGL error encountered (see log)");
+        }
+    }
+}