全网首发：使用安卓MediaCodec Encoder进行编码时的方向问题

    public AndroidVideoEncoder(int width, int height, int rotate, int framerate, int bitrate)
    {
        mRotate = rotate;
        if (mRotate == 90 || mRotate == 270)
        {
            int temp = height;
            height   = width;
            width    = temp;
        }
        super.initParams(null, width, height);
    }

        if (mRotate == 90)
        {
            MediaCodecKit.NV21_rotate_to_90 (mDataArray, rotateBuffer, mHeight, mWidth);
        }
        else if (mRotate == 180)
        {
            MediaCodecKit.NV21_rotate_to_180(mDataArray, rotateBuffer, mWidth, mHeight);
        }
        else if (mRotate == 270)
        {
            MediaCodecKit.NV21_rotate_to_270(mDataArray, rotateBuffer, mHeight, mWidth);
        }
        else
        {
            return;
        }
        System.arraycopy(rotateBuffer, 0, mDataArray, 0, mDataSize);