Android Camera output using ndk-blurry result - android-ndk

Question

http://postimg.org/image/btd4u4esx/
Hi,
This is the output image(black keyboard with white background) of a code that i modified from one of android samples. I want to take byte data from java file and send it to cpp using jni as unsigned character and and i am trying to display the video frames i receive using open cv mat.
JAVA CODE:
native int Fibonacci( byte[] n,int width, int height );
static {
System.loadLibrary( "CopyofHDRViewFinder" );
}
#Override
public void run() {
// y = 0.299*r + 0.587*g + 0.114*b
Log.v(TAG, "enter in imageSaver! Format is: " + mImage.getFormat());
ByteBuffer buffer = mImage.getPlanes()[0].getBuffer();
int heigth=mImage.getHeight();
int width=mImage.getWidth();
byte[] bytes = new byte[buffer.remaining()];
buffer.get(bytes);
int a=Fibonacci(bytes,width,heigth);
int pixelsize=mImage.getWidth()*mImage.getHeight();
System.out.println("framewidth:"+mImage.getWidth());
System.out.println("frameheight:"+mImage.getHeight());
System.out.println("totalnumberofpixels:"+pixelsize);
System.out.println("lastpixelvalue:"+a);
then the CPP code:(jni)
JNIEXPORT jint JNICALL Java_com_example_android_hdrviewfinder_HdrViewfinderActivity3_00024ImageSaver_Fibonacci
(JNIEnv *env, jobject obj, jbyteArray array, jint width, jint height)
{
i=i+1;
int len = env->GetArrayLength (array);
unsigned char* img = new unsigned char[len];
env->GetByteArrayRegion (array, 0, len-1, reinterpret_cast<jbyte*>(img));
const cv::Mat hdrimg(height,width, CV_8UC1, img);
char buffer[50];
int ab=sprintf(buffer,"/storage/emulated/0/Android/IMAGE%d.jpg",i);
cv::imwrite(buffer, hdrimg);
/*cv::namedWindow("HDRImage");
cv::imshow("HDRImage", hdrimg);
cv::waitKey(0);*/
printf("\n %d", width);
printf("\n %d", height);
int a;
for(int i=0;i<width*height;i++)
{
a=(int)img[i];
}
int c=width*height;
return a;
}
This returns proper pixel values from 0 to 255. my issue is not that. when i check the image it looks blurry and totally horrible, but still i cant deduce that its a keyboard slightly. Anyone has seen similar results? Help, if you can..