copy camera image buffer to gstreamer buffer - gstreamer

Question

I am developing a gstreamer plugin similar to v4l2src that captures live video from our camera and display using gstreamer.
My plugin is able to sucesfully generate a yuv file.
Now I need to copy camera image buffer to gstreamer buffer and push it to the next element. For this I used the below method:
GstBuffer *outbuf1
outbuf1 = gst_buffer_new_allocate(NULL,*buflen,NULL);
ret_size = gst_buffer_fill(outbuf1,pImgBuf->pBuffer[0],pImgBuf->iFilledLen[0]);
ret = gst_pad_push(Video->gst_filter->srcpad,outbuf1);
Here I get the error code GST_FLOW_FLUSHING
Further debugging this I also generated one yuv file from the data in image buffer before copying image buffer to gstreamer buffer:
fwrite( pImgBuf->pBuffer[0], pImgBuf->iFilledLen[0], 1, Video->File );
This yuv file is sucesfully generated and played using vooya.
Now when I try to generate the yuv file using the gstreamer buffer yuv file is not properly generated as it is not played on vooya and gives the error message "no good data"
Here is my code flow for more details:
static void gst_imx219src_init (Gstimx219src * filter)
{
printf("================================Inside gst_imx219src_init============== \n");
filter->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
gst_pad_set_event_function (filter->sinkpad,
GST_DEBUG_FUNCPTR(gst_imx219src_sink_event));
-----------------code for camera init and recording -------------------
ret = start_processing_on_event_dequeue( hHandle, filter );
start_processing_on_event_dequeue : This function will start the recording process in camera.This function internally calls the below function:
void Video_DeliverInput( void *hVideo, CAM_ImageBuffer *pImgBuf , CAM_StreamID strmId)
{
VideoChain *Video = (VideoChain*)Video;
CAM_Error error = CAM_ERROR_NONE;
int retCode = *buflen;
GstBuffer *outbuf1,*outbuf2,*outbuf3;
GstFlowReturn ret;
buflen = pImgBuf->iFilledLen;
outbuf1 = gst_buffer_new_allocate(NULL,*buflen,NULL);
outbuf2 = gst_buffer_new_allocate(NULL,*buflen,NULL);
outbuf3 = gst_buffer_new_allocate(NULL,*buflen,NULL);
gst_buffer_memset(outbuf1, 0, '\0', *buflen);
gst_buffer_memset(outbuf2, 0, '\0', *buflen);
gst_buffer_memset(outbuf3, 0, '\0', *buflen);
if ( Video->iEncoderType == 0 ) // yuv
{
if ( Video->File != NULL )
{
fwrite( pImgBuf->pBuffer[0], pImgBuf->iFilledLen[0], 1, Video->File );
fwrite( pImgBuf->pBuffer[1], pImgBuf->iFilledLen[1], 1, Video->File );
fwrite( pImgBuf->pBuffer[2], pImgBuf->iFilledLen[2], 1, Video->File );
}
}
if(outbuf1)
{
ret_size = gst_buffer_fill (outbuf1, 0, pImgBuf->pBuffer[0],pImgBuf->iFilledLen[0]);
ret_size = gst_buffer_fill (outbuf2, 0, pImgBuf->pBuffer[1],pImgBuf->iFilledLen[1]);
ret_size = gst_buffer_fill (outbuf3, 0, pImgBuf->pBuffer[2],pImgBuf->iFilledLen[2]);
}
else
{
printf("===========failed to create buffer \n");
}
gst_pad_set_active (Video->gst_filter->srcpad,TRUE);
ret = gst_pad_is_active (Video->gst_filter->srcpad);
ret = gst_pad_push(Video->gst_filter->srcpad,outbuf1);
#if defined( PLATFORM_PROCESSOR_ULC )
if(strmId == CAM_STREAM1)
error = CAM_PortEnqueueBuffer( hVideo->hCameraEngine, CAM_PORT_PREVIEW, pImgBuf );
else
error = CAM_PortEnqueueBuffer( hVideo->hCameraEngine, CAM_PORT_STILL, pImgBuf );
ASSERT_CAM_ERROR( error );
#else
error = CAM_PortEnqueueBuffer( hVideo->hCameraEngine, CAM_PORT_VIDEO, pImgBuf );
ASSERT_CAM_ERROR( error );
#endif
//}
return;
}
filter->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
ret = start_processing_on_event_dequeue( hHandle, filter );
Please can anyone help me with this?
Thanks for the help in advance.