[Gstreamer-openmax] Buffer usage issue in gstreamer plugins for OpenMAX

[Giulio URLINI]

Hi all,
	using the 0.10.0.2 of gst-omx there is a problem with the buffer allocation.
In OpenMAX all the buffers are allocated during the setup with either an
OMX_UseBuffer or an OMX_AllocateBuffer call. These calls also create a buffer
header, which is a structure whose pBuffer member points to the actual memory
buffer. This member is read-only and should not be modified.
During the processing inside gst-openmax plugins pBuffer is overwritten (see
gstomx_base_filter.c line 500 of the latest release 0.10.0.2). 
These buffers have different addresses and size compared to what has been
declared with OMX_UseBuffer(). This behavior is against the OpenMAX spec, and
can cause errors.
In any case the OpenMAX components should check for the correctness of the
buffers received. Also the IL client is not allowed to overwrite the pBuffer
pointer.

a new bug track has been submitted to bugzilla for this issue.
The link is the following:

http://bugzilla.gnome.org/show_bug.cgi?id=501546

Regards,
Giulio