Java EGL14類代碼示例

import android.opengl.EGL14; //導入依賴的package包/類
/**
 * Discard all resources held by this class, notably the EGL context.  Also releases the
 * Surface that was passed to our constructor.
 */
public void release() {
    if (EGL14.eglGetCurrentContext().equals(mEGLContext)) {
        // Clear the current context and surface to ensure they are discarded immediately.
        EGL14.eglMakeCurrent(mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE,
                EGL14.EGL_NO_CONTEXT);
    }
    EGL14.eglDestroySurface(mEGLDisplay, mEGLSurface);
    EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
    //EGL14.eglTerminate(mEGLDisplay);
    mSurface.release();
    // null everything out so future attempts to use this object will cause an NPE
    mEGLDisplay = null;
    mEGLContext = null;
    mEGLSurface = null;
    mSurface = null;
}
 

import android.opengl.EGL14; //導入依賴的package包/類
public EGLSurface createGLESWithPBuffer(EGLConfigAttrs attrs,EGLContextAttrs ctxAttrs,int width,int height){
    EGLConfig config=getConfig(attrs.surfaceType(EGL14.EGL_PBUFFER_BIT));
    if(config==null){
        log("getConfig failed : "+EGL14.eglGetError());
        return null;
    }
    EGLContext eglContext=createContext(config,EGL14.EGL_NO_CONTEXT,ctxAttrs);
    if(eglContext==EGL14.EGL_NO_CONTEXT){
        log("createContext failed : "+EGL14.eglGetError());
        return null;
    }
    EGLSurface eglSurface=createPBufferSurface(config,width,height);
    if(eglSurface==EGL14.EGL_NO_SURFACE){
        log("createWindowSurface failed : "+EGL14.eglGetError());
        return null;
    }
    if(!EGL14.eglMakeCurrent(mEGLDisplay,eglSurface,eglSurface,eglContext)){
        log("eglMakeCurrent failed : "+EGL14.eglGetError());
        return null;
    }
    return eglSurface;
}
 

import android.opengl.EGL14; //導入依賴的package包/類
private int[] filterConfigSpec(int[] configSpec) {
    if (mEGLContextClientVersion != 2 && mEGLContextClientVersion != 3) {
        return configSpec;
    }
    /* We know none of the subclasses define EGL_RENDERABLE_TYPE.
     * And we know the configSpec is well formed.
     */
    int len = configSpec.length;
    int[] newConfigSpec = new int[len + 2];
    System.arraycopy(configSpec, 0, newConfigSpec, 0, len - 1);
    newConfigSpec[len - 1] = EGL10.EGL_RENDERABLE_TYPE;
    if (mEGLContextClientVersion == 2) {
        newConfigSpec[len] = EGL14.EGL_OPENGL_ES2_BIT;  /* EGL_OPENGL_ES2_BIT */
    } else {
        newConfigSpec[len] = EGLExt.EGL_OPENGL_ES3_BIT_KHR; /* EGL_OPENGL_ES3_BIT_KHR */
    }
    newConfigSpec[len + 1] = EGL10.EGL_NONE;
    return newConfigSpec;
}
 

import android.opengl.EGL14; //導入依賴的package包/類
/**
 * Creates an EGL surface associated with a Surface.
 * <p>
 * If this is destined for MediaCodec, the EGLConfig should have the "recordable" attribute.
 */
public EGLSurface createWindowSurface(Object surface) {
    if (!(surface instanceof Surface) && !(surface instanceof SurfaceTexture)) {
        throw new RuntimeException("invalid surface: " + surface);
    }

    // Create a window surface, and attach it to the Surface we received.
    int[] surfaceAttribs = {
            EGL14.EGL_NONE
    };
    EGLSurface eglSurface = EGL14.eglCreateWindowSurface(mEGLDisplay, mEGLConfig, surface,
            surfaceAttribs, 0);
    checkEglError("eglCreateWindowSurface");
    if (eglSurface == null) {
        throw new RuntimeException("surface was null");
    }
    return eglSurface;
}
 

import android.opengl.EGL14; //導入依賴的package包/類
/**
 * Discard all resources held by this class, notably the EGL context.
 */
public void release() {
    if (mEGLDisplay != EGL14.EGL_NO_DISPLAY) {
        EGL14.eglDestroySurface(mEGLDisplay, mEGLSurface);
        EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
        EGL14.eglReleaseThread();
        EGL14.eglTerminate(mEGLDisplay);
    }
    mSurface.release();
    // this causes a bunch of warnings that appear harmless but might confuse someone:
    //  W BufferQueue: [unnamed-3997-2] cancelBuffer: BufferQueue has been abandoned!
    //mSurfaceTexture.release();
    mEGLDisplay = EGL14.EGL_NO_DISPLAY;
    mEGLContext = EGL14.EGL_NO_CONTEXT;
    mEGLSurface = EGL14.EGL_NO_SURFACE;
    mTextureRender = null;
    mSurface = null;
    mSurfaceTexture = null;
}
 

import android.opengl.EGL14; //導入依賴的package包/類
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;
}
 

import android.opengl.EGL14; //導入依賴的package包/類
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;
}
 

import android.opengl.EGL14; //導入依賴的package包/類
@Override
public void onCameraSurfaceCreate(SurfaceTexture surfaceTexture) {
    Log.d(TAG, "onCameraSurfaceCreate");
    mCamera = Camera.open();
    Camera.Parameters parameters = mCamera.getParameters();
    parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
    mVideoRecorder.createInputSurfaceWindow(EGL14.eglGetCurrentContext());
    try {
        parameters.setPreviewSize(PREVIEW_WIDTH, PREVIEW_HEIGHT);
        mCameraView.setPreviewSize(PREVIEW_HEIGHT, PREVIEW_WIDTH);
        mVideoRecorder.setPreviewSize(PREVIEW_HEIGHT, PREVIEW_WIDTH);
        mCamera.setParameters(parameters);
        mCamera.setPreviewTexture(surfaceTexture);
        mCamera.setDisplayOrientation(Profile.ORIENTATION_90);
        mCamera.startPreview();
    } catch (IOException e) {
        e.printStackTrace();
    }

    isSurfaceReady = true;
}
 

import android.opengl.EGL14; //導入依賴的package包/類
/**
 * Discards all resources held by this class, notably the EGL context.  This must be
 * called from the thread where the context was created.
 * <p>
 * On completion, no context will be current.
 */
public void release() {
    if (mEGLDisplay != EGL14.EGL_NO_DISPLAY) {
        // Android is unusual in that it uses a reference-counted EGLDisplay.  So for
        // every eglInitialize() we need an eglTerminate().
        EGL14.eglMakeCurrent(mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE,
                EGL14.EGL_NO_CONTEXT);
        EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
        EGL14.eglReleaseThread();
        EGL14.eglTerminate(mEGLDisplay);
    }

    mEGLDisplay = EGL14.EGL_NO_DISPLAY;
    mEGLContext = EGL14.EGL_NO_CONTEXT;
    mEGLConfig = null;
}
 

import android.opengl.EGL14; //導入依賴的package包/類
public OffscreenImage(Bitmap bitmap) {
    mWidth = bitmap.getWidth();
    mHeight = bitmap.getHeight();

    // 初始化EGL環境
    mEgl = new EGLEnvironment(EGL14.eglGetCurrentContext(), false);
    // 創建離屏緩衝
    mInputSurface = mEgl.createOffscreen(mWidth, mHeight);
    // 設置渲染環境可用
    mInputSurface.makeCurrent();

    BitmapInput bitmapInput = new BitmapInput(bitmap);

    mPipeline = new RenderPipeline();
    mPipeline.onSurfaceCreated(null, null);
    mPipeline.setStartPointRender(bitmapInput);
}
 

import android.opengl.EGL14; //導入依賴的package包/類
/** @return from a new EGL display connection */
@NonNull
public static EGLDisplay newDisplay() {
    final EGLDisplay result = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY);
    if (result == EGL14.EGL_NO_DISPLAY) {
        logError();
        throw new RuntimeException("Unable to get EGL14 display");
    } else {
        final int[] v = new int[2];
        if (!EGL14.eglInitialize(result, v, 0, v, 1)) {
            try {
                logError();
                throw new RuntimeException("Unable to initialize EGL14 display");
            } finally {
                closeDisplay(result);
            }
        } else {
            logDebug(getDisplayString(result) + " created (EGL" + v[0] + "" + v[1] + ")");
            return result;
        }
    }
}
 

import android.opengl.EGL14; //導入依賴的package包/類
@Override
public void onDraw(int textureId, FloatBuffer cubeBuffer, FloatBuffer textureBuffer) {
    // Draw on screen surface
    super.onDraw(textureId, cubeBuffer, textureBuffer);

    if (mIsRecording) {
        // create encoder surface
        if (mCodecInput == null) {
            mEGLCore = new EglCore(EGL14.eglGetCurrentContext(), EglCore.FLAG_RECORDABLE);
            mCodecInput = new WindowSurface(mEGLCore, mVideoEncoder.getSurface(), false);
        }

        // Draw on encoder surface
        mCodecInput.makeCurrent();
        super.onDraw(textureId, cubeBuffer, textureBuffer);
        if (mIsRecording) {//super.onDraw maybe executed stopRecording
            mCodecInput.swapBuffers();
            mVideoEncoder.frameAvailableSoon();
        }
    }

    // Make screen surface be current surface
    mEGL.eglMakeCurrent(mEGLDisplay, mEGLScreenSurface, mEGLScreenSurface, mEGLContext);
}
 

import android.opengl.EGL14; //導入依賴的package包/類
public EGLSurface createEGLSurface(Object surface) {

        if (!(surface instanceof Surface) && !(surface instanceof SurfaceTexture)) {
            throw new RuntimeException("invalid surface: " + surface);
        }

        // Create a window surface, and attach it to the Surface we received.
        int[] surfaceAttributes = {
                EGL14.EGL_NONE
        };
        EGLSurface eglSurface = EGL14.eglCreateWindowSurface(mEGLDisplay, mEGLConfig, surface,
                surfaceAttributes, 0);
        if (eglSurface == null) {
            throw new RuntimeException("surface was null");
        }

        return eglSurface;
    }
 

import android.opengl.EGL14; //導入依賴的package包/類
/**
 * Makes our EGL context current, using the supplied "draw" and "read" surfaces.
 */
public void makeCurrent(EGLSurface drawSurface, EGLSurface readSurface) {
    if (mEGLDisplay == EGL14.EGL_NO_DISPLAY) {
        // called makeCurrent() before create?
        Log.d(TAG, "NOTE: makeCurrent w/o display");
    }
    if (!EGL14.eglMakeCurrent(mEGLDisplay, drawSurface, readSurface, mEGLContext)) {
        throw new RuntimeException("eglMakeCurrent(draw,read) failed");
    }
}
 

import android.opengl.EGL14; //導入依賴的package包/類
public void changeDisplay(int key){
    mEGLDisplay=EGL14.eglGetDisplay(key);
    //獲取版本號，[0]為版本號，[1]為子版本號
    int[] versions=new int[2];
    EGL14.eglInitialize(mEGLDisplay,versions,0,versions,1);
    log(EGL14.eglQueryString(mEGLDisplay, EGL14.EGL_VENDOR));
    log(EGL14.eglQueryString(mEGLDisplay, EGL14.EGL_VERSION));
    log(EGL14.eglQueryString(mEGLDisplay, EGL14.EGL_EXTENSIONS));
}