Java SurfaceTexture.getTransformMatrix方法代碼示例

import android.graphics.SurfaceTexture; //導入方法依賴的package包/類
@Override
public void onFrameAvailable(SurfaceTexture surfaceTexture) {
    surfaceTexture.updateTexImage();
    float[] transform = new float[16];      // TODO - avoid alloc every frame
    surfaceTexture.getTransformMatrix(transform);
    long timestamp = mIncomingFramePts;// surfaceTexture.getTimestamp();
    if (timestamp == 0) {
        // Seeing this after device is toggled off/on with power button.  The
        // first frame back has a zero timestamp.
        //
        // MPEG4Writer thinks this is cause to abort() in native code, so it's very
        // important that we just ignore the frame.
        return;
    }
    handleFrameAvailable(transform, timestamp * 1000);
}
 

import android.graphics.SurfaceTexture; //導入方法依賴的package包/類
/**
 * Tells the video recorder that a new frame is available.  (Call from non-encoder thread.)
 * <p>
 * This function sends a message and returns immediately.  This isn't sufficient -- we
 * don't want the caller to latch a new frame until we're done with this one -- but we
 * can get away with it so long as the input frame rate is reasonable and the encoder
 * thread doesn't stall.
 * <p>
 * TODO: either block here until the texture has been rendered onto the encoder surface,
 * or have a separate "block if still busy" method that the caller can execute immediately
 * before it calls updateTexImage().  The latter is preferred because we don't want to
 * stall the caller while this thread does work.
 */
public void frameAvailable(SurfaceTexture st) {
    synchronized (mReadyFence) {
        if (!mReady) {
            return;
        }
    }

    float[] transform = new float[16];      // TODO - avoid alloc every frame
    st.getTransformMatrix(transform);
    long timestamp = st.getTimestamp();
    if (timestamp == 0) {
        // Seeing this after device is toggled off/on with power button.  The
        // first frame back has a zero timestamp.
        //
        // MPEG4Writer thinks this is cause to abort() in native code, so it's very
        // important that we just ignore the frame.
        Log.w(TAG, "HEY: got SurfaceTexture with timestamp of zero");
        return;
    }

    mHandler.sendMessage(mHandler.obtainMessage(MSG_FRAME_AVAILABLE,
            (int) (timestamp >> 32), (int) timestamp, transform));
}
 

import android.graphics.SurfaceTexture; //導入方法依賴的package包/類
public void drawFrame(SurfaceTexture st, boolean invert) {
    checkGlError("onDrawFrame start");
    st.getTransformMatrix(mSTMatrix);

    if (invert) {
        mSTMatrix[5] = -mSTMatrix[5];
        mSTMatrix[13] = 1.0f - mSTMatrix[13];
    }

    GLES20.glUseProgram(mProgram);
    checkGlError("glUseProgram");
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, mTextureID);
    mTriangleVertices.position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
    GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT, false, TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices);
    checkGlError("glVertexAttribPointer maPosition");
    GLES20.glEnableVertexAttribArray(maPositionHandle);
    checkGlError("glEnableVertexAttribArray maPositionHandle");
    mTriangleVertices.position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
    GLES20.glVertexAttribPointer(maTextureHandle, 2, GLES20.GL_FLOAT, false, TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices);
    checkGlError("glVertexAttribPointer maTextureHandle");
    GLES20.glEnableVertexAttribArray(maTextureHandle);
    checkGlError("glEnableVertexAttribArray maTextureHandle");
    GLES20.glUniformMatrix4fv(muSTMatrixHandle, 1, false, mSTMatrix, 0);
    GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, mMVPMatrix, 0);
    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
    checkGlError("glDrawArrays");
    GLES20.glFinish();
}
 

import android.graphics.SurfaceTexture; //導入方法依賴的package包/類
public void drawFrame(SurfaceTexture st) {
    checkGlError("onDrawFrame start");
    st.getTransformMatrix(mSTMatrix);
    GLES20.glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
    GLES20.glClear(GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);
    GLES20.glUseProgram(mProgram);
    checkGlError("glUseProgram");
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, mTextureID);
    mTriangleVertices.position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
    GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT, false,
            TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices);
    checkGlError("glVertexAttribPointer maPosition");
    GLES20.glEnableVertexAttribArray(maPositionHandle);
    checkGlError("glEnableVertexAttribArray maPositionHandle");
    mTriangleVertices.position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
    GLES20.glVertexAttribPointer(maTextureHandle, 2, GLES20.GL_FLOAT, false,
            TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices);
    checkGlError("glVertexAttribPointer maTextureHandle");
    GLES20.glEnableVertexAttribArray(maTextureHandle);
    checkGlError("glEnableVertexAttribArray maTextureHandle");
    Matrix.setIdentityM(mMVPMatrix, 0);
    GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, mMVPMatrix, 0);
    GLES20.glUniformMatrix4fv(muSTMatrixHandle, 1, false, mSTMatrix, 0);
    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
    checkGlError("glDrawArrays");
    GLES20.glFinish();
}
 

import android.graphics.SurfaceTexture; //導入方法依賴的package包/類
private void glRun(){
    EglHelper egl=new EglHelper();
    boolean ret=egl.createGLESWithSurface(new EGLConfigAttrs(),new EGLContextAttrs(),new SurfaceTexture(1));
    if(!ret){
        //todo 錯誤處理
        return;
    }
    int mInputSurfaceTextureId = GpuUtils.createTextureID(true);
    SurfaceTexture mInputSurfaceTexture = new SurfaceTexture(mInputSurfaceTextureId);

    Point size=mProvider.open(mInputSurfaceTexture);
    AvLog.d(TAG,"Provider Opened . data size (x,y)="+size.x+"/"+size.y);
    if(size.x<=0||size.y<=0){
        //todo 錯誤處理
        destroyGL(egl);
        synchronized (LOCK){
            LOCK.notifyAll();
        }
        return;
    }
    int mSourceWidth = size.x;
    int mSourceHeight = size.y;
    synchronized (LOCK){
        LOCK.notifyAll();
    }
    //要求數據源提供者必須同步返回數據大小
    if(mSourceWidth <=0|| mSourceHeight <=0){
        error(1,"video source return inaccurate size to SurfaceTextureActuator");
        return;
    }

    if(mRenderer==null){
        mRenderer=new WrapRenderer(null);
    }
    FrameBuffer sourceFrame=new FrameBuffer();
    mRenderer.create();
    mRenderer.sizeChanged(mSourceWidth, mSourceHeight);
    mRenderer.setFlag(mProvider.isLandscape()?WrapRenderer.TYPE_CAMERA:WrapRenderer.TYPE_MOVE);

    //用於其他的回調
    RenderBean rb=new RenderBean();
    rb.egl=egl;
    rb.sourceWidth= mSourceWidth;
    rb.sourceHeight= mSourceHeight;
    rb.endFlag=false;
    rb.threadId=Thread.currentThread().getId();
    AvLog.d(TAG,"Processor While Loop Entry");
    //要求數據源必須同步填充SurfaceTexture，填充完成前等待
    while (!mProvider.frame()&&mGLThreadFlag){
        mInputSurfaceTexture.updateTexImage();
        mInputSurfaceTexture.getTransformMatrix(mRenderer.getTextureMatrix());
        AvLog.d(TAG,"timestamp:"+ mInputSurfaceTexture.getTimestamp());
        sourceFrame.bindFrameBuffer(mSourceWidth, mSourceHeight);
        GLES20.glViewport(0,0, mSourceWidth, mSourceHeight);
        mRenderer.draw(mInputSurfaceTextureId);
        sourceFrame.unBindFrameBuffer();
        rb.textureId=sourceFrame.getCacheTextureId();
        //接收數據源傳入的時間戳
        rb.timeStamp=mProvider.getTimeStamp();
        rb.textureTime= mInputSurfaceTexture.getTimestamp();
        observable.notify(rb);
    }
    AvLog.d(TAG,"out of gl thread loop");
    synchronized (LOCK){
        rb.endFlag=true;
        observable.notify(rb);
        mRenderer.destroy();
        destroyGL(egl);
        LOCK.notifyAll();
        AvLog.d(TAG,"gl thread exit");
    }
}
 

import android.graphics.SurfaceTexture; //導入方法依賴的package包/類
@Override
public boolean handleMessage(Message msg) {
    switch (msg.what) {
        case WINDOW_MSG_CALCULATE_MVP_MATRIX:
            Matrix.setIdentityM(mMVPMatrix, 0);
            //平鋪
            float scaleX = 1.0f;
            float scaleY = 1.0f;
            final double previewRatio = mPreviewWidth * 1.0f / mPreviewHeight;
            final double viewRatio = mWidth * 1.0f / mHeight;

            if (previewRatio < viewRatio) {
                scaleY = (float) (mPreviewHeight * 1.0f / (mPreviewWidth / viewRatio));
            } else {
                scaleX = (float) (mPreviewWidth * 1.0f / (mPreviewHeight * viewRatio));
            }

            Matrix.scaleM(mMVPMatrix, 0, scaleX, scaleY, 1.0f);
            break;
        case WINDOW_MSG_ATTACH_SURFACE:
            Log.d(TAG, "WINDOW_MSG_ATTACH_SURFACE");
            Surface surface = (Surface) msg.obj;
            mGLSurface.createSurface(surface);
            mGLSurface.makeCurrent();
            break;
        case WINDOW_MSG_DETACH_SURFACE:
            Log.d(TAG, "WINDOW_MSG_DETACH_SURFACE");
            releaseGLSurface();
            break;
        case WINDOW_MSG_UPDATE:

            Log.d(TAG, "WINDOW_MSG_UPDATE");
            if (mGLSurface == null) {
                return false;
            }

            SurfaceTexture surfaceTexture = (SurfaceTexture) msg.obj;
            int textureIndex = msg.arg1;
            long presentationTime = msg.getData().getLong(UPDATE_PRESENTATION_TIME_KEY);

            surfaceTexture.getTransformMatrix(mTextureTransformMatrix);
            mGLSurface.makeCurrent();
            mGLSurfaceFilter.draw(textureIndex, mMVPMatrix, mTextureTransformMatrix);
            mGLSurface.setPresentationTime(presentationTime);
            mGLSurface.swapBuffers();

            final CallBack callBack = mCallBack;
            if (callBack != null) {
                callBack.onOffScreenWindowUpdate();
            }
            break;
    }
    return true;
}
 

import android.graphics.SurfaceTexture; //導入方法依賴的package包/類
public void drawFrame(SurfaceTexture st) {
    checkGlError("onDrawFrame start");
    st.getTransformMatrix(mSTMatrix);
    GLES20.glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
    GLES20.glClear(GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);
    GLES20.glUseProgram(mProgram);
    checkGlError("glUseProgram");
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, mTextureID);
    mTriangleVertices.position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
    GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT, false,
        TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices);
    checkGlError("glVertexAttribPointer maPosition");
    GLES20.glEnableVertexAttribArray(maPositionHandle);
    checkGlError("glEnableVertexAttribArray maPositionHandle");
    mTriangleVertices.position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
    GLES20.glVertexAttribPointer(maTextureHandle, 2, GLES20.GL_FLOAT, false,
        TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices);
    checkGlError("glVertexAttribPointer maTextureHandle");
    GLES20.glEnableVertexAttribArray(maTextureHandle);
    checkGlError("glEnableVertexAttribArray maTextureHandle");
    Matrix.setIdentityM(mMVPMatrix, 0);
    GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, mMVPMatrix, 0);
    GLES20.glUniformMatrix4fv(muSTMatrixHandle, 1, false, mSTMatrix, 0);
    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
    checkGlError("glDrawArrays");

    if (mFingerDown) {
     float[] scratch = new float[16];
     // Set the camera position (View matrix)
     Matrix.setLookAtM(mViewMatrix, 0, 0, 0, -3, 0f, 0f, 0f, 0f, 1.0f, 0.0f);
     mViewMatrix[12] = (float) (mTouchX * 2.0f / mWidth - 1.0);
     mViewMatrix[13] = (float) (mTouchY * -2.0f / mHeight + 1.0);
     // Calculate the projection and view transformation
     Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mViewMatrix, 0);
     // Create a rotation for the triangle
     // Use the following code to generate constant rotation.
     // Leave this code out when using TouchEvents.
     long time = SystemClock.uptimeMillis() % 4000L;
     float mAngle = 0.090f * ((int) time);
     Matrix.setRotateM(mRotationMatrix, 0, mAngle, 0, 0, 1.0f);
     // Combine the rotation matrix with the projection and camera view
     // Note that the mMVPMatrix factor *must be first* in order
     // for the matrix multiplication product to be correct.
     Matrix.multiplyMM(scratch, 0, mMVPMatrix, 0, mRotationMatrix, 0);
     // Draw triangle
     mTriangle.draw(scratch);
    }
    
    GLES20.glFinish();
}