<html> <head> <style></style> </head> <body class='hmmessage'> Hi,<BR><BR> I briefly explain to you my problem. For my thesis i am developing a gstreamer plug-in that encrypt an mpeg4 video with DES in CBC mode. The encryption is made frame by frame and because a frame doesn't contain an exact number of DES BLOCK SIZE(64 bit) i must padding the final bytes of the frame. Because i use padding the dimension of the frame in output is greater than that in input. For this reason i must allocate an output buffer of a precise size. So in the trasform function of my plug in i have tried to call this function: gst_base_transform_prepare_output_buffer( base, inbuf, newSize, inbuf->caps,&outbuf ); but when i try to compile i have this error:error: implicit declaration of function ‘gst_base_transform_prepare_output_buffer’ nevertheless i have done the include of gstbasetransform.h.<BR>I would be very happy if you can say to me how i must to  allocate an output buffer that is larger than input.<BR><BR>thanks<BR><BR>Best regards<BR> <br /><hr />Foto delle vacanze? <a href='http://www.windowslive.it/foto.aspx' target='_new'>Crea il tuo album online e condividile con gli amici!</a></body> </html>