Directshow + JNI 1.2( NewDirectByteBuffer ) + JMF = Fatal Error Screen

Question

Hi,
I have a stream in directshow with a SampleGrabberFilter for the video and another for the audio. I'm using the code of https://jmds.dev.java.net/ for implementing the layer directchow.
After, I'm trying to create a datasource for JMF with the example "Generating Live Audio/Video Data [Custom DataSource]"
(http://java.sun.com/products/java-media/jmf/2.1.1/solutions/LiveData.html)
But I cannot transfer the buffer in SampleGrabberFilter through JNI 1.2. and I don't find a good example for helping me.
Could you help me ?
Karima
Here a part of my code :
public class LiveStream implements PushBufferStream {
public void read(Buffer _buffer) throws IOException { /////////////////////// Fatal Error Screen !!! Here...
        Object data = _buffer.getData();
         int length = ((VideoFormat) myFormat).getMaxDataLength();
         ByteBuffer newdata = createAndfillByteBuffer(length);
          buffer.setData(newdata);
         _buffer.setOffset(0);
         _buffer.setFormat(myFormat);
         _buffer.setLength(newdata.limit());
         _buffer.setTimeStamp(Buffer.TIME_UNKNOWN);
         _buffer.notifyAll();
public void setTransferHandler(BufferTransferHandler _transferHandler) {
        myTransferHandler = _transferHandler;
        private class CaptureRunnable implements Runnable {
     public void run() {
          start0();
          // notify sleepers that we're done starting up
          synchronized (myRestartLock) {
               myRestartLock.notifyAll();
          // chill until there is data in the buffer
          while (!myStopRequested && getBufferSize() == 0) {
                     try {
               Thread.sleep(100);
                        }catch (Throwable t) {
                    t.printStackTrace();
          // grab frames as fast as possible
          while (!myStopRequested) {
               if (myTransferHandler != null) {
                         myTransferHandler.transferData(LiveStream.this);
               else {
                        // if there's no transfer handler, just wait for a bit and try again
                    try {
                              Thread.sleep(100);
                    }catch (Throwable t) {}
                    // This sleep is here because there is the
                    // potential that you can starve your PC
                    // while polling the capture card for video.
                    try {
                         Thread.sleep(20);
                    }catch (Throwable t) {}
          stop0();
          // notify waiters that we're done stopping the thread
          synchronized (myRestartLock) {
               myStarted = false;
               myRestartLock.notify();
private native void start0(); // Run the Graph in directshow
private native void stop0();  //stop the Graph in directshow
private native ByteBuffer createAndfillByteBuffer(int capacity);
///////////////////// C
long MAX_BufferVideo = 1024;
BYTE * tabBufferVideo;
JNIEXPORT  jobject JNICALL Java_com_mycompagny_media_protocol_Camera_LiveStream_createAndfillByteBuffer
(JNIEnv * pEnv, jobject jLiveStream,  jint jcapacity){
     HRESULT hr;
     long MaxBuffer = MAX_BufferVideo;
     long cbBufferLength = -1;
     hr = g_pSampleGrabberVideo->GetCurrentBuffer(&cbBufferLength, NULL);
     if (hr != VFW_E_WRONG_STATE) {
     CheckForFailure(pEnv, "Failed to get buffer size.", hr);
     long jLength = (long) jcapacity ;//pEnv->GetDirectBufferCapacity(jByteBuffer);
     if (jLength < MaxBuffer){
          MaxBuffer = jLength;
     if (cbBufferLength < MaxBuffer) {
                          MaxBuffer = cbBufferLength;
     HRESULT hrInitialize = CoInitialize(NULL);
     CheckForFailure(pEnv, "CoInitialize Failed.", hrInitialize);
     g_pSampleGrabberVideo->GetCurrentBuffer(&MaxBuffer,(long *)tabBufferVideo);
     CheckForFailure(pEnv, "Failed to fill buffer.", hr);
     if (hrInitialize == S_OK) {
          CoUninitialize();
     return pEnv->NewDirectByteBuffer(tabBufferVideo,MaxBuffer);
     return NULL;
}

Answer 1

1. Did you call g_pSampleGrabberVideo->SetBufferSamples( TRUE ) on the sample grabber?
  long MAX_BufferVideo = 1024;
// global variableBYTE * tabBufferVideo; // global variable
2. Where are you allocating the memory for BYTE* tabBufferVideo?
JNIEXPORT void JNICALL Java_mycompany_LiveStream_connect(JNIEnv * pEnv, jobject jDataSource){
...// add filters
     CComPtr<ISampleGrabber> pSampleGrabberVideo = NULL;
     hr = pGrabberVideo->QueryInterface(IID_ISampleGrabber, (void**)&pSampleGrabberVideo);
     CheckForFailure(pEnv, "Failed to retrieve sample grabber Video interface.", hr);
     hr = pSampleGrabberVideo->SetBufferSamples(TRUE);
     CheckForFailure(pEnv, "Failed to turn on buffering on sample grabber Video.", hr);
... //connect filters
     if(tabBufferVideo == NULL)
     if (!(tabBufferVideo = (BYTE *)malloc(MAX_BufferVideo))) {
          FailWithException(pEnv, "Cannot create the buffer Video ", E_FAIL);