appsrc and caps

[gledan]

Hi Tim, thanks for your reply

As you can see in the source code of my first mail, I use the
gst_parse_launch function with the following pipeline : 
appsrc name=mysource ! ffmpegcolorspace ! videoscale method=1 ! xvimagesink

I also tried to add a videoparse element with format=RGB between the appsrc
and ffmpegcolorspace, but the result was a segmentation fault.

Typically, I push the buffer on this way (thanks to the need-data signal) : 
TVFU_VFIMAGE vfImage;
  /*allocate the camera buffer*/
  errCode =
VFU_Image_Alloc(hCam,usbWidth,usbHeight,VFU_VFIMAGEFORMAT_RGB888,&vfImage);
  if(errCode>=0){
	  /*getting frame from cam*/
	  errCode=VFU_Image_Get(hCam,VFU_VFIMAGEFORMAT_RGB888,&vfImage);
	  if(errCode<0){std::cout<<"error getting an image : "<<  errCode
<<std::endl;
	  return FALSE;}
  }
  else std::cout<<"error allocating the VFU buffer :
"<<errCode<<std::endl;
  
  g_print ("allocating gst memory\n");
  buffer = gst_buffer_new_and_alloc (vfImage.ImageBufferSize);
  GST_BUFFER_DATA(buffer) = vfImage.ImageData;
  GST_BUFFER_SIZE(buffer) = vfImage.ImageBufferSize;

  /* Push the buffer into the appsrc */
  g_signal_emit_by_name (data->source, "push-buffer", buffer, &ret);

  /* Free buffers */
  gst_buffer_unref (buffer);
  VFU_Image_Free(hCam,&vfImage);
  if (ret != GST_FLOW_OK) {
	  g_print ("ERROR : pushing data\n");
    return FALSE;
  }
  g_timer_start(data->timer);
  return TRUE;


Regards,
Greg



--
View this message in context: http://gstreamer-devel.966125.n4.nabble.com/appsrc-and-caps-tp4666409p4666412.html
Sent from the GStreamer-devel mailing list archive at Nabble.com.