[Change]

开始USB摄像头的功能集成，还无法获取usb连接广播需要调试

Signed-off-by: donghongyu <donghongyu@zhidaoauto.com>

libraries/map-usbcamera/src/main/java/com/serenegiant/glutils/EglTask.java

@@ -0,0 +1,122 @@
+package com.serenegiant.glutils;
+/*
+ * libcommon
+ * utility/helper classes for myself
+ *
+ * Copyright (c) 2014-2018 saki t_saki@serenegiant.com
+ *
+ * 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.
+*/
+
+import androidx.annotation.Nullable;
+
+import com.serenegiant.utils.MessageTask;
+
+public abstract class EglTask extends MessageTask {
+//	private static final boolean DEBUG = false;
+//	private static final String TAG = "EglTask";
+
+	public static final int EGL_FLAG_DEPTH_BUFFER = 0x01;
+	public static final int EGL_FLAG_RECORDABLE = 0x02;
+	public static final int EGL_FLAG_STENCIL_1BIT = 0x04;
+//	public static final int EGL_FLAG_STENCIL_2BIT = 0x08;
+//	public static final int EGL_FLAG_STENCIL_4BIT = 0x10;
+	public static final int EGL_FLAG_STENCIL_8BIT = 0x20;
+
+	private EGLBase mEgl = null;
+	private EGLBase.IEglSurface mEglHolder;
+
+	public EglTask(final EGLBase.IContext sharedContext, final int flags) {
+//		if (DEBUG) Log.i(TAG, "shared_context=" + shared_context);
+		init(flags, 3, sharedContext);
+	}
+
+	public EglTask(final int maxClientVersion,
+		final EGLBase.IContext sharedContext, final int flags) {
+
+//		if (DEBUG) Log.i(TAG, "shared_context=" + shared_context);
+		init(flags, maxClientVersion, sharedContext);
+	}
+
+	/**
+	 * @param flags
+	 * @param maxClientVersion
+	 * @param sharedContext
+	 */
+	@Override
+	protected void onInit(final int flags,
+		final int maxClientVersion, final Object sharedContext) {
+
+		if ((sharedContext == null)
+			|| (sharedContext instanceof EGLBase.IContext)) {
+
+			final int stencilBits
+				= (flags & EGL_FLAG_STENCIL_1BIT) == EGL_FLAG_STENCIL_1BIT ? 1
+					: ((flags & EGL_FLAG_STENCIL_8BIT) == EGL_FLAG_STENCIL_8BIT ? 8 : 0);
+			mEgl = EGLBase.createFrom(maxClientVersion, (EGLBase.IContext)sharedContext,
+				(flags & EGL_FLAG_DEPTH_BUFFER) == EGL_FLAG_DEPTH_BUFFER,
+				stencilBits,
+				(flags & EGL_FLAG_RECORDABLE) == EGL_FLAG_RECORDABLE);
+		}
+		if (mEgl == null) {
+			callOnError(new RuntimeException("failed to create EglCore"));
+			releaseSelf();
+		} else {
+			mEglHolder = mEgl.createOffscreen(1, 1);
+			mEglHolder.makeCurrent();
+		}
+	}
+
+	@Override
+	protected Request takeRequest() throws InterruptedException {
+		final Request result = super.takeRequest();
+		mEglHolder.makeCurrent();
+		return result;
+	}
+
+	@Override
+	protected void onBeforeStop() {
+		mEglHolder.makeCurrent();
+	}
+
+	@Override
+	protected void onRelease() {
+		mEglHolder.release();
+		mEgl.release();
+	}
+
+	protected EGLBase getEgl() {
+		return mEgl;
+	}
+
+	protected EGLBase.IContext getEGLContext() {
+		return mEgl.getContext();
+	}
+
+	protected EGLBase.IConfig getConfig() {
+		return mEgl.getConfig();
+	}
+
+	@Nullable
+	protected EGLBase.IContext getContext() {
+		return mEgl != null ? mEgl.getContext() : null;
+	}
+
+	protected void makeCurrent() {
+		mEglHolder.makeCurrent();
+	}
+
+	protected boolean isGLES3() {
+		return (mEgl != null) && (mEgl.getGlVersion() > 2);
+	}
+}