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/*
* Copyright (C) 2017 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.
*/
#ifndef CAR_EVS_APP_RENDERBASE_H
#define CAR_EVS_APP_RENDERBASE_H
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <GLES3/gl3.h>
#include <GLES3/gl3ext.h>
#include <android/hardware/automotive/evs/1.0/IEvsEnumerator.h>
using namespace ::android::hardware::automotive::evs::V1_0;
using ::android::sp;
/*
* Abstract base class for the workhorse classes that handle the user interaction and display for
* each mode of the EVS application.
*/
class RenderBase {
public:
virtual ~RenderBase() {};
virtual bool activate() = 0;
virtual void deactivate() = 0;
virtual bool drawFrame(const BufferDesc& tgtBuffer) = 0;
protected:
static bool prepareGL();
static bool attachRenderTarget(const BufferDesc& tgtBuffer);
static void detachRenderTarget();
// OpenGL state shared among all renderers
static EGLDisplay sDisplay;
static EGLContext sContext;
static EGLSurface sDummySurface;
static GLuint sFrameBuffer;
static GLuint sColorBuffer;
static GLuint sDepthBuffer;
static EGLImageKHR sKHRimage;
static unsigned sWidth;
static unsigned sHeight;
static float sAspectRatio;
};
#endif //CAR_EVS_APP_RENDERBASE_H
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