Revision bc0a685b
Added by Leszek Koltunski almost 8 years ago
| src/main/java/org/distorted/examples/plainmonalisa/EglCore.java | ||
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// Copyright 2016 Leszek Koltunski // |
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// // |
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// This file is part of Distorted. // |
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// // |
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// Distorted is free software: you can redistribute it and/or modify // |
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// it under the terms of the GNU General Public License as published by // |
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// the Free Software Foundation, either version 2 of the License, or // |
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// (at your option) any later version. // |
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// // |
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// Distorted is distributed in the hope that it will be useful, // |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of // |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // |
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// GNU General Public License for more details. // |
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// // |
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// You should have received a copy of the GNU General Public License // |
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// along with Distorted. If not, see <http://www.gnu.org/licenses/>. // |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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package org.distorted.examples.plainmonalisa; |
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import android.graphics.SurfaceTexture; |
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import android.view.Surface; |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Core EGL state (display, context, config). |
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* <p> |
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* The EGLContext must only be attached to one thread at a time. This class is not thread-safe. |
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*/ |
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public final class EglCore |
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{
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private static final String TAG = "EglCore"; |
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/** |
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* Constructor flag: surface must be recordable. This discourages EGL from using a |
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* pixel format that cannot be converted efficiently to something usable by the video |
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* encoder. |
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*/ |
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public static final int FLAG_RECORDABLE = 0x01; |
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/** |
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* Constructor flag: ask for GLES3, fall back to GLES2 if not available. Without this |
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* flag, GLES2 is used. |
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*/ |
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public static final int FLAG_TRY_GLES3 = 0x02; |
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public static final int FLAG_RECORDABLE = 0x01; // Surface must be recordable. This discourages EGL from using a |
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// pixel format that cannot be converted efficiently to something |
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// usable by the video encoder. |
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public static final int FLAG_TRY_GLES3 = 0x02; // Ask for GLES3, fall back to GLES2 if not available. |
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// Android-specific extension. |
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private static final int EGL_RECORDABLE_ANDROID = 0x3142; |
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private static final int EGL_RECORDABLE_ANDROID = 0x3142; // Android-specific extension |
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private EGLDisplay mEGLDisplay = EGL14.EGL_NO_DISPLAY; |
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private EGLContext mEGLContext = EGL14.EGL_NO_CONTEXT; |
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private int mGlVersion = -1; |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Prepares EGL display and context. |
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* <p> |
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* Equivalent to EglCore(null, 0). |
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*/ |
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public EglCore() |
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{
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this(null, 0); |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Prepares EGL display and context. |
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* <p> |
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* @param sharedContext The context to share, or null if sharing is not desired. |
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* @param flags Configuration bit flags, e.g. FLAG_RECORDABLE. |
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*/ |
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public EglCore(EGLContext sharedContext, int flags) |
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{
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if (mEGLDisplay != EGL14.EGL_NO_DISPLAY) |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Finds a suitable EGLConfig. |
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* |
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* @param flags Bit flags from constructor. |
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* @param version Must be 2 or 3. |
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*/ |
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private EGLConfig getConfig(int flags, int version) |
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{
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int renderableType = EGL14.EGL_OPENGL_ES2_BIT; |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Discards all resources held by this class, notably the EGL context. This must be |
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* called from the thread where the context was created. |
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* <p> |
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* On completion, no context will be current. |
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*/ |
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public void release() |
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{
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if (mEGLDisplay != EGL14.EGL_NO_DISPLAY) |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Destroys the specified surface. Note the EGLSurface won't actually be destroyed if it's |
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* still current in a context. |
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*/ |
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public void releaseSurface(EGLSurface eglSurface) |
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{
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EGL14.eglDestroySurface(mEGLDisplay, eglSurface); |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Creates an EGL surface associated with a Surface. |
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* <p> |
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* If this is destined for MediaCodec, the EGLConfig should have the "recordable" attribute. |
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*/ |
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public EGLSurface createWindowSurface(Object surface) |
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{
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if (!(surface instanceof Surface) && !(surface instanceof SurfaceTexture)) |
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throw new RuntimeException("invalid surface: " + surface);
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} |
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// Create a window surface, and attach it to the Surface we received. |
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int[] surfaceAttribs = { EGL14.EGL_NONE };
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EGLSurface eglSurface = EGL14.eglCreateWindowSurface(mEGLDisplay, mEGLConfig, surface, surfaceAttribs, 0); |
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checkEglError("eglCreateWindowSurface");
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Makes our EGL context current, using the supplied surface for both "draw" and "read". |
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*/ |
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public void makeCurrent(EGLSurface eglSurface) |
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{
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if (mEGLDisplay == EGL14.EGL_NO_DISPLAY) |
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{
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// called makeCurrent() before create? |
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Log.d(TAG, "NOTE: makeCurrent w/o display"); |
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} |
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if (!EGL14.eglMakeCurrent(mEGLDisplay, eglSurface, eglSurface, mEGLContext)) |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Makes no context current. |
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*/ |
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public void makeNothingCurrent() |
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{
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if (!EGL14.eglMakeCurrent(mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT)) |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Returns the GLES version this context is configured for (currently 2 or 3). |
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*/ |
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public int getGlVersion() |
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{
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return mGlVersion; |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Calls eglSwapBuffers. Use this to "publish" the current frame. |
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* |
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* @return false on failure |
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*/ |
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public boolean swapBuffers(EGLSurface eglSurface) |
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{
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return EGL14.eglSwapBuffers(mEGLDisplay, eglSurface); |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Checks for EGL errors. Throws an exception if an error has been raised. |
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*/ |
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private void checkEglError(String msg) |
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{
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int error; |
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} |
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} |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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