passing array of primitives from java to c

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C

Java

JNI

I have a int array like

int[][] coordinates = {{346, 640, 499, 666},{555, 640, 675, 666}};

and I am trying to send this array to C with using JNI. I could find clear solution for one dimensional array but not for multidimensional array.

<br />
public class PopulateCoordinates{<br />
public native void Coordinates(int[][] coordinates);<br />
<br />
 static {<br />
  System.loadLibrary("libPopulateCoordinates");<br />
 }<br />
 public static void main(String[] args) {<br />
<br />
  PopulateCoordinates h = new PopulateCoordinates();<br />
  int[][] coordinates = {{346, 640, 499, 666},{555, 640, 675, 666}};<br />
  h.Coordinates(coordinates);<br />
 }<br />
 }<br />

My C code has method which will populate its array that is passed from java like this

rect skip_rectarr[2] = { {346, 640, 499, 666}, { 555, 640, 675, 666 }};

<br />
typedef struct {<br />
int left;<br />
int top;<br />
int right;<br />
int bot;<br />
} rect;<br />
JNIEXPORT void JNICALL PopulateCoordinates_Coordinates(JNIEnv *env, jobject obj,jobjectArray inJNIArray)<br />
{<br />
//rect skip_rectarr[2] = { {346, 640, 499, 666}, { 555, 640, 675, 666 }};<br />
}<br />

I am having a hard time in properly converting jobject to int[][] due to lack of native development knowledge. Can anyone tell me the simplest and safest possible way? Thanks