/*
* 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.annotation.TargetApi;
import android.graphics.SurfaceTexture;
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.view.Surface;
/**
* Holds EGL state and utility methods for handling an EGL14 EGLContext, an EGLDisplay,
* and an EGLSurface.
*/
@TargetApi(18)
class EglBase14 extends EglBase {
private static final String TAG = "EglBase14";
private static final int EGLExt_SDK_VERSION = android.os.Build.VERSION_CODES.JELLY_BEAN_MR2;
private static final int CURRENT_SDK_VERSION = android.os.Build.VERSION.SDK_INT;
private EGLContext eglContext;
private EGLConfig eglConfig;
private EGLDisplay eglDisplay;
private EGLSurface eglSurface = EGL14.EGL_NO_SURFACE;
final int widthArray[] = new int[1];
final int heightArray[] = new int[1];
// EGL 1.4 is supported from API 17. But EGLExt that is used for setting presentation
// time stamp on a surface is supported from 18 so we require 18.
public static boolean isEGL14Supported() {
Logging.d(TAG,
"SDK version: " + CURRENT_SDK_VERSION
+ ". isEGL14Supported: " + (CURRENT_SDK_VERSION >= EGLExt_SDK_VERSION));
return (CURRENT_SDK_VERSION >= EGLExt_SDK_VERSION);
}
public static class Context extends EglBase.Context {
private final android.opengl.EGLContext egl14Context;
public Context(android.opengl.EGLContext eglContext) {
this.egl14Context = eglContext;
}
}
// Create a new context with the specified config type, sharing data with sharedContext.
// |sharedContext| may be null.
public EglBase14(EglBase14.Context sharedContext, int[] configAttributes) {
eglDisplay = getEglDisplay();
eglConfig = getEglConfig(eglDisplay, configAttributes);
eglContext = createEglContext(sharedContext, eglDisplay, eglConfig);
}
// Create EGLSurface from the Android Surface.
@Override
public void createSurface(Surface surface) {
createSurfaceInternal(surface);
}
// Create EGLSurface from the Android SurfaceTexture.
@Override
public void createSurface(SurfaceTexture surfaceTexture) {
createSurfaceInternal(surfaceTexture);
}
// Create EGLSurface from either Surface or SurfaceTexture.
private void createSurfaceInternal(Object surface) {
if (!(surface instanceof Surface) && !(surface instanceof SurfaceTexture)) {
throw new IllegalStateException("Input must be either a Surface or SurfaceTexture");
}
checkIsNotReleased();
if (eglSurface != EGL14.EGL_NO_SURFACE) {
throw new RuntimeException("Already has an EGLSurface");
}
int[] surfaceAttribs = {EGL14.EGL_NONE};
eglSurface = EGL14.eglCreateWindowSurface(eglDisplay, eglConfig, surface, surfaceAttribs, 0);
if (eglSurface == EGL14.EGL_NO_SURFACE) {
throw new RuntimeException(
"Failed to create window surface: 0x" + Integer.toHexString(EGL14.eglGetError()));
}
}
@Override
public void createDummyPbufferSurface() {
createPbufferSurface(1, 1);
}
@Override
public void createPbufferSurface(int width, int height) {
checkIsNotReleased();
if (eglSurface != EGL14.EGL_NO_SURFACE) {
throw new RuntimeException("Already has an EGLSurface");
}
int[] surfaceAttribs = {EGL14.EGL_WIDTH, width, EGL14.EGL_HEIGHT, height, EGL14.EGL_NONE};
eglSurface = EGL14.eglCreatePbufferSurface(eglDisplay, eglConfig, surfaceAttribs, 0);
if (eglSurface == EGL14.EGL_NO_SURFACE) {
throw new RuntimeException("Failed to create pixel buffer surface with size " + width + "x"
+ height + ": 0x" + Integer.toHexString(EGL14.eglGetError()));
}
}
@Override
public Context getEglBaseContext() {
return new EglBase14.Context(eglContext);
}
@Override
public boolean hasSurface() {
return eglSurface != EGL14.EGL_NO_SURFACE;
}
@Override
public int surfaceWidth() {
EGL14.eglQuerySurface(eglDisplay, eglSurface, EGL14.EGL_WIDTH, widthArray, 0);
return widthArray[0];
}
@Override
public int surfaceHeight() {
EGL14.eglQuerySurface(eglDisplay, eglSurface, EGL14.EGL_HEIGHT, heightArray, 0);
return heightArray[0];
}
@Override
public void releaseSurface() {
if (eglSurface != EGL14.EGL_NO_SURFACE) {
EGL14.eglDestroySurface(eglDisplay, eglSurface);
eglSurface = EGL14.EGL_NO_SURFACE;
}
}
private void checkIsNotReleased() {
if (eglDisplay == EGL14.EGL_NO_DISPLAY || eglContext == EGL14.EGL_NO_CONTEXT
|| eglConfig == null) {
throw new RuntimeException("This object has been released");
}
}
@Override
public void release() {
checkIsNotReleased();
releaseSurface();
detachCurrent();
EGL14.eglDestroyContext(eglDisplay, eglContext);
EGL14.eglReleaseThread();
EGL14.eglTerminate(eglDisplay);
eglContext = EGL14.EGL_NO_CONTEXT;
eglDisplay = EGL14.EGL_NO_DISPLAY;
eglConfig = null;
}
@Override
public void makeCurrent() {
checkIsNotReleased();
if (eglSurface == EGL14.EGL_NO_SURFACE) {
throw new RuntimeException("No EGLSurface - can't make current");
}
synchronized (EglBase.lock) {
if (!EGL14.eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext)) {
throw new RuntimeException(
"eglMakeCurrent failed: 0x" + Integer.toHexString(EGL14.eglGetError()));
}
}
}
// Detach the current EGL context, so that it can be made current on another thread.
@Override
public void detachCurrent() {
synchronized (EglBase.lock) {
if (!EGL14.eglMakeCurrent(
eglDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT)) {
throw new RuntimeException(
"eglDetachCurrent failed: 0x" + Integer.toHexString(EGL14.eglGetError()));
}
}
}
@Override
public void swapBuffers(long timestampNs) {
checkIsNotReleased();
if (eglSurface == EGL14.EGL_NO_SURFACE) {
throw new RuntimeException("No EGLSurface - can't swap buffers");
}
synchronized (EglBase.lock) {
// See
// https://android.googlesource.com/platform/frameworks/native/+/tools_r22.2/opengl/specs/EGL_ANDROID_presentation_time.txt
if (timestampNs != -1) {
EGLExt.eglPresentationTimeANDROID(eglDisplay, eglSurface, timestampNs);
}
EGL14.eglSwapBuffers(eglDisplay, eglSurface);
}
}
// Return an EGLDisplay, or die trying.
private static EGLDisplay getEglDisplay() {
EGLDisplay eglDisplay = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY);
if (eglDisplay == EGL14.EGL_NO_DISPLAY) {
throw new RuntimeException(
"Unable to get EGL14 display: 0x" + Integer.toHexString(EGL14.eglGetError()));
}
int[] version = new int[2];
if (!EGL14.eglInitialize(eglDisplay, version, 0, version, 1)) {
throw new RuntimeException(
"Unable to initialize EGL14: 0x" + Integer.toHexString(EGL14.eglGetError()));
}
return eglDisplay;
}
// Return an EGLConfig, or die trying.
private static EGLConfig getEglConfig(EGLDisplay eglDisplay, int[] configAttributes) {
EGLConfig[] configs = new EGLConfig[1];
int[] numConfigs = new int[1];
if (!EGL14.eglChooseConfig(
eglDisplay, configAttributes, 0, configs, 0, configs.length, numConfigs, 0)) {
throw new RuntimeException(
"eglChooseConfig failed: 0x" + Integer.toHexString(EGL14.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 static EGLContext createEglContext(
EglBase14.Context sharedContext, EGLDisplay eglDisplay, EGLConfig eglConfig) {
if (sharedContext != null && sharedContext.egl14Context == EGL14.EGL_NO_CONTEXT) {
throw new RuntimeException("Invalid sharedContext");
}
int[] contextAttributes = {EGL14.EGL_CONTEXT_CLIENT_VERSION, 2, EGL14.EGL_NONE};
EGLContext rootContext =
sharedContext == null ? EGL14.EGL_NO_CONTEXT : sharedContext.egl14Context;
final EGLContext eglContext;
synchronized (EglBase.lock) {
eglContext = EGL14.eglCreateContext(eglDisplay, eglConfig, rootContext, contextAttributes, 0);
}
if (eglContext == EGL14.EGL_NO_CONTEXT) {
throw new RuntimeException(
"Failed to create EGL context: 0x" + Integer.toHexString(EGL14.eglGetError()));
}
return eglContext;
}
}
