[gstreamer-bugs] [Bug 545853] [basetransform] rewrite

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gstreamer (core) | Ver: HEAD CVS

Aurelien Grimaud changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gstelzz at yahoo.fr




------- Comment #3 from Aurelien Grimaud  2008-08-21 00:20 UTC -------
gassert(*out_buf != NULL) in gst_base_transform_prepare_output_buffer fails for
some capsfilter.

For instance : 
send mpeg4
gst-launch -v videotestsrc is-live=TRUE ! ffenc_mpeg4 ! rtpmp4vpay ! udpsink
host=localhost port=5000 sync=TRUE
Setting pipeline to PAUSED ...
/pipeline0/videotestsrc0.src: caps = video/x-raw-yuv, format=(fourcc)I420,
width=(int)320, height=(int)240, framerate=(fraction)30/1
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
/pipeline0/ffenc_mpeg40.src: caps = video/mpeg, width=(int)320,
height=(int)240, framerate=(fraction)30/1, mpegversion=(int)4,
systemstream=(boolean)false
/pipeline0/ffenc_mpeg40.sink: caps = video/x-raw-yuv, format=(fourcc)I420,
width=(int)320, height=(int)240, framerate=(fraction)30/1
/pipeline0/rtpmp4vpay0.sink: caps = video/mpeg, width=(int)320,
height=(int)240, framerate=(fraction)30/1, mpegversion=(int)4,
systemstream=(boolean)false
/pipeline0/rtpmp4vpay0.src: caps = application/x-rtp, media=(string)video,
clock-rate=(int)90000, encoding-name=(string)MP4V-ES,
profile-level-id=(string)1,
config=(string)000001b001000001b58913000001000000012000c48d8800f50a041e1463000001b24c61766335312e34382e30,
payload=(int)96, ssrc=(guint)554304604, clock-base=(guint)1573512221,
seqnum-base=(guint)25873
New clock: GstSystemClock
/pipeline0/udpsink0.sink: caps = application/x-rtp, media=(string)video,
clock-rate=(int)90000, encoding-name=(string)MP4V-ES,
profile-level-id=(string)1,
config=(string)000001b001000001b58913000001000000012000c48d8800f50a041e1463000001b24c61766335312e34382e30,
payload=(int)96, ssrc=(guint)554304604, clock-base=(guint)1573512221,
seqnum-base=(guint)25873

recv mpeg4
gst-launch -v udpsrc port=5000 ! "application/x-rtp, media=(string)video,
clock-rate=(int)90000, encoding-name=(string)MP4V-ES,
profile-level-id=(string)1,
config=(string)000001b001000001b58913000001000000012000c48d8800f50a041e1463000001b24c61766335312e34382e30"
! rtpmp4vdepay !  mpeg4videoparse ! fakesink
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock

** ERROR **: file gstbasetransform.c: line 1141
(gst_base_transform_prepare_output_buffer): assertion failed: (*out_buf !=
NULL)
aborting...
Abort (core dumped)

If payload is specified in capsfilter, all goes ok.

Problem is capsfilter does not always allocate buffer in its
prepare_output_buffer function.
What should capsfilter do in such case ?


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