1、旋轉90度

privatebyte[] rotateYUV420Degree90(byte[] data,int imageWidth,int imageHeight){byte[] yuv =newbyte[imageWidth*imageHeight*3/2];// Rotate the Y lumaint i =0;for(int x =0;x < imageWidth;x++){for(int y = imageHeight-1;y >=0;y--){
            yuv[i]= data[y*imageWidth+x];
            i++;}}// Rotate the U and V color components 
 

    i = imageWidth*imageHeight*3/2-1;for(int x = imageWidth-1;x >0;x=x-2){for(int y =0;y < imageHeight/2;y++){
            yuv[i]= data[(imageWidth*imageHeight)+(y*imageWidth)+x];
            i--;
            yuv[i]= data[(imageWidth*imageHeight)+(y*imageWidth)+(x-1)];
            i--;}}return yuv
 
;}

privatestaticbyte[] rotateYUV420Degree180(byte[] data,int imageWidth,int imageHeight){byte[] yuv =newbyte[imageWidth * imageHeight *3/2];int i =0;int count =0;for(i = imageWidth * imageHeight -1; i >=0; i--){
        yuv[count]= data[i];
        count++;}
    i = imageWidth * imageHeight 
 
*3/2-1;for(i = imageWidth * imageHeight *3/2-1; i >= imageWidth
            * imageHeight; i -=2){
        yuv[count++]= data[i -1];
        yuv[count++]= data[i];}return yuv;}

3.旋轉270度

publicstaticbyte[] rotateYUV420Degree270(byte[] data,int imageWidth,int imageHeight){byte[] yuv =newbyte[imageWidth * imageHeight *3/2];int nWidth =0, nHeight =0;int wh =0;int uvHeight =0;if(imageWidth != nWidth || imageHeight != nHeight){
        nWidth = imageWidth;
        nHeight = imageHeight;
        wh = imageWidth * imageHeight;
        uvHeight = imageHeight >>1;// uvHeight = height / 2}// ??Yint k =0;for(int i =0; i < imageWidth; i++){int nPos =0;for(int j =0; j < imageHeight; j++){
            yuv[k]= data[nPos + i];
            k++;
            nPos += imageWidth;}}for(int i =0; i < imageWidth; i +=2){int nPos = wh;for(int j =0; j < uvHeight; j++){
            yuv[k]= data[nPos + i];
            yuv[k +1]= data[nPos + i +1];
            k +=2;
            nPos += imageWidth;}}return rotateYUV420Degree180(yuv, imageWidth, imageHeight);}

而且需要把原先

EncoderDebugger debugger = EncoderDebugger.debug(mSettings, mQuality.resX, mQuality.resY);

中引數

mQuality.resX, mQuality.resY調換順序以防花屏

EncoderDebugger debugger = EncoderDebugger.debug(mSettings, mQuality.resY, mQuality.resX);
mPPS =debugger.getB64PPS();
mSPS = debugger.getB64SPS();
mProfilLevel = MP4Parser.toHexString(Base64.decode(mPPS, Base64.NO_WRAP),1,3);

這種方法效果比較合適，直接是轉換資料。也查到了轉換成jpeg格式，轉換圖片方向，再轉成流傳出去，這個方法時進行了壓縮，資料減少導致編解碼時buffer陣列獲取資料出問題。

結合

OrientationEventListener中的下例方法，進行螢幕方向檢測，獲取方向，以便方向旋轉的判斷選擇。

@Override
public void onOrientationChanged(int orientation) {
    this.Orientation=orientation;
Log.d("OrientationDetector","當前的感測器方向為"+orientation);
    if (orientation == ORIENTATION_UNKNOWN) return;
Camera.CameraInfo info =
            new Camera.CameraInfo();
Camera.getCameraInfo(0, info);
orientation = (orientation + 45) / 90 * 90;
    if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
        rotation = (info.orientation - orientation + 360) % 360;
} else {  // back-facing camera
rotation = (info.orientation + orientation) % 360;
}
    System.out.println("獲取相機度數：  "+ rotation);
    if (camera!=null){
        Camera.Parameters parameters = camera.getParameters();
parameters.setRotation(rotation);
camera.setParameters(parameters);
}
}

public int getOrientation(){//對外提供方向0,90,180,270 四個引數
    return rotation;
}