blob: c213ee7cd63310f85af3d226383a1cc9a1537d1d [file] [log] [blame]
/*
* 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.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.SurfaceTexture;
import android.support.annotation.Nullable;
import android.view.Surface;
import android.view.SurfaceHolder;
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;
/**
* Holds EGL state and utility methods for handling an egl 1.0 EGLContext, an EGLDisplay,
* and an EGLSurface.
*/
class EglBase10 implements EglBase {
// This constant is taken from EGL14.EGL_CONTEXT_CLIENT_VERSION.
private static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
private final EGL10 egl;
private EGLContext eglContext;
@Nullable private EGLConfig eglConfig;
private EGLDisplay eglDisplay;
private EGLSurface eglSurface = EGL10.EGL_NO_SURFACE;
// EGL wrapper for an actual EGLContext.
public static class Context implements EglBase.Context {
private final EGLContext eglContext;
@Override
public long getNativeEglContext() {
// TODO(magjed): Implement. There is no easy way of getting the native context for EGL 1.0. We
// need to make sure to have an EglSurface, then make the context current using that surface,
// and then call into JNI and call the native version of eglGetCurrentContext. Then we need to
// restore the state and return the native context.
return 0 /* EGL_NO_CONTEXT */;
}
public Context(EGLContext eglContext) {
this.eglContext = eglContext;
}
}
// Create a new context with the specified config type, sharing data with sharedContext.
public EglBase10(Context sharedContext, int[] configAttributes) {
this.egl = (EGL10) EGLContext.getEGL();
eglDisplay = getEglDisplay();
eglConfig = getEglConfig(eglDisplay, configAttributes);
eglContext = createEglContext(sharedContext, eglDisplay, eglConfig);
}
@Override
public void createSurface(Surface surface) {
/**
* We have to wrap Surface in a SurfaceHolder because for some reason eglCreateWindowSurface
* couldn't actually take a Surface object until API 17. Older versions fortunately just call
* SurfaceHolder.getSurface(), so we'll do that. No other methods are relevant.
*/
class FakeSurfaceHolder implements SurfaceHolder {
private final Surface surface;
FakeSurfaceHolder(Surface surface) {
this.surface = surface;
}
@Override
public void addCallback(Callback callback) {}
@Override
public void removeCallback(Callback callback) {}
@Override
public boolean isCreating() {
return false;
}
@Deprecated
@Override
public void setType(int i) {}
@Override
public void setFixedSize(int i, int i2) {}
@Override
public void setSizeFromLayout() {}
@Override
public void setFormat(int i) {}
@Override
public void setKeepScreenOn(boolean b) {}
@Nullable
@Override
public Canvas lockCanvas() {
return null;
}
@Nullable
@Override
public Canvas lockCanvas(Rect rect) {
return null;
}
@Override
public void unlockCanvasAndPost(Canvas canvas) {}
@Nullable
@Override
public Rect getSurfaceFrame() {
return null;
}
@Override
public Surface getSurface() {
return surface;
}
}
createSurfaceInternal(new FakeSurfaceHolder(surface));
}
// Create EGLSurface from the Android SurfaceTexture.
@Override
public void createSurface(SurfaceTexture surfaceTexture) {
createSurfaceInternal(surfaceTexture);
}
// Create EGLSurface from either a SurfaceHolder or a SurfaceTexture.
private void createSurfaceInternal(Object nativeWindow) {
if (!(nativeWindow instanceof SurfaceHolder) && !(nativeWindow instanceof SurfaceTexture)) {
throw new IllegalStateException("Input must be either a SurfaceHolder or SurfaceTexture");
}
checkIsNotReleased();
if (eglSurface != EGL10.EGL_NO_SURFACE) {
throw new RuntimeException("Already has an EGLSurface");
}
int[] surfaceAttribs = {EGL10.EGL_NONE};
eglSurface = egl.eglCreateWindowSurface(eglDisplay, eglConfig, nativeWindow, surfaceAttribs);
if (eglSurface == EGL10.EGL_NO_SURFACE) {
throw new RuntimeException(
"Failed to create window surface: 0x" + Integer.toHexString(egl.eglGetError()));
}
}
// Create dummy 1x1 pixel buffer surface so the context can be made current.
@Override
public void createDummyPbufferSurface() {
createPbufferSurface(1, 1);
}
@Override
public void createPbufferSurface(int width, int height) {
checkIsNotReleased();
if (eglSurface != EGL10.EGL_NO_SURFACE) {
throw new RuntimeException("Already has an EGLSurface");
}
int[] surfaceAttribs = {EGL10.EGL_WIDTH, width, EGL10.EGL_HEIGHT, height, EGL10.EGL_NONE};
eglSurface = egl.eglCreatePbufferSurface(eglDisplay, eglConfig, surfaceAttribs);
if (eglSurface == EGL10.EGL_NO_SURFACE) {
throw new RuntimeException("Failed to create pixel buffer surface with size " + width + "x"
+ height + ": 0x" + Integer.toHexString(egl.eglGetError()));
}
}
@Override
public org.webrtc.EglBase.Context getEglBaseContext() {
return new EglBase10.Context(eglContext);
}
@Override
public boolean hasSurface() {
return eglSurface != EGL10.EGL_NO_SURFACE;
}
@Override
public int surfaceWidth() {
final int widthArray[] = new int[1];
egl.eglQuerySurface(eglDisplay, eglSurface, EGL10.EGL_WIDTH, widthArray);
return widthArray[0];
}
@Override
public int surfaceHeight() {
final int heightArray[] = new int[1];
egl.eglQuerySurface(eglDisplay, eglSurface, EGL10.EGL_HEIGHT, heightArray);
return heightArray[0];
}
@Override
public void releaseSurface() {
if (eglSurface != EGL10.EGL_NO_SURFACE) {
egl.eglDestroySurface(eglDisplay, eglSurface);
eglSurface = EGL10.EGL_NO_SURFACE;
}
}
private void checkIsNotReleased() {
if (eglDisplay == EGL10.EGL_NO_DISPLAY || eglContext == EGL10.EGL_NO_CONTEXT
|| eglConfig == null) {
throw new RuntimeException("This object has been released");
}
}
@Override
public void release() {
checkIsNotReleased();
releaseSurface();
detachCurrent();
egl.eglDestroyContext(eglDisplay, eglContext);
egl.eglTerminate(eglDisplay);
eglContext = EGL10.EGL_NO_CONTEXT;
eglDisplay = EGL10.EGL_NO_DISPLAY;
eglConfig = null;
}
@Override
public void makeCurrent() {
checkIsNotReleased();
if (eglSurface == EGL10.EGL_NO_SURFACE) {
throw new RuntimeException("No EGLSurface - can't make current");
}
synchronized (EglBase.lock) {
if (!egl.eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext)) {
throw new RuntimeException(
"eglMakeCurrent failed: 0x" + Integer.toHexString(egl.eglGetError()));
}
}
}
// Detach the current EGL context, so that it can be made current on another thread.
@Override
public void detachCurrent() {
synchronized (EglBase.lock) {
if (!egl.eglMakeCurrent(
eglDisplay, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_CONTEXT)) {
throw new RuntimeException(
"eglDetachCurrent failed: 0x" + Integer.toHexString(egl.eglGetError()));
}
}
}
@Override
public void swapBuffers() {
checkIsNotReleased();
if (eglSurface == EGL10.EGL_NO_SURFACE) {
throw new RuntimeException("No EGLSurface - can't swap buffers");
}
synchronized (EglBase.lock) {
egl.eglSwapBuffers(eglDisplay, eglSurface);
}
}
@Override
public void swapBuffers(long timeStampNs) {
// Setting presentation time is not supported for EGL 1.0.
swapBuffers();
}
// Return an EGLDisplay, or die trying.
private EGLDisplay getEglDisplay() {
EGLDisplay eglDisplay = egl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
if (eglDisplay == EGL10.EGL_NO_DISPLAY) {
throw new RuntimeException(
"Unable to get EGL10 display: 0x" + Integer.toHexString(egl.eglGetError()));
}
int[] version = new int[2];
if (!egl.eglInitialize(eglDisplay, version)) {
throw new RuntimeException(
"Unable to initialize EGL10: 0x" + Integer.toHexString(egl.eglGetError()));
}
return eglDisplay;
}
// Return an EGLConfig, or die trying.
private EGLConfig getEglConfig(EGLDisplay eglDisplay, int[] configAttributes) {
EGLConfig[] configs = new EGLConfig[1];
int[] numConfigs = new int[1];
if (!egl.eglChooseConfig(eglDisplay, configAttributes, configs, configs.length, numConfigs)) {
throw new RuntimeException(
"eglChooseConfig failed: 0x" + Integer.toHexString(egl.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 EGLContext createEglContext(
@Nullable Context sharedContext, EGLDisplay eglDisplay, EGLConfig eglConfig) {
if (sharedContext != null && sharedContext.eglContext == EGL10.EGL_NO_CONTEXT) {
throw new RuntimeException("Invalid sharedContext");
}
int[] contextAttributes = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE};
EGLContext rootContext =
sharedContext == null ? EGL10.EGL_NO_CONTEXT : sharedContext.eglContext;
final EGLContext eglContext;
synchronized (EglBase.lock) {
eglContext = egl.eglCreateContext(eglDisplay, eglConfig, rootContext, contextAttributes);
}
if (eglContext == EGL10.EGL_NO_CONTEXT) {
throw new RuntimeException(
"Failed to create EGL context: 0x" + Integer.toHexString(egl.eglGetError()));
}
return eglContext;
}
}