[Bug 679878] New: [0.11] mpeg2dec: cropping broken: gst_video_decoder_alloc_output_frame: assertion `frame->output_buffer == NULL' failed

Fri Jul 13 10:13:40 PDT 2012

https://bugzilla.gnome.org/show_bug.cgi?id=679878
  GStreamer | gst-plugins-ugly | 0.11.x

           Summary: [0.11] mpeg2dec: cropping broken:
                    gst_video_decoder_alloc_output_frame: assertion
                    `frame->output_buffer == NULL' failed
    Classification: Platform
           Product: GStreamer
           Version: 0.11.x
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: Normal
         Component: gst-plugins-ugly
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: t.i.m at zen.co.uk
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Starting program: /home/tpm/gst/0.11/gstreamer/tools/.libs/lt-gst-launch-1.0
filesrc
location=/home/tpm/samples/misc/331301-xgl-gentoo-lycos-mpeg2dec-cropping.avi
\! decodebin \! video/x-raw \! fakesink
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Setting pipeline to PAUSED ...
[New Thread 0x7ffff409e700 (LWP 20836)]
Pipeline is PREROLLING ...
[New Thread 0x7ffff2acd700 (LWP 20837)]
[New Thread 0x7ffff22cc700 (LWP 20838)]
Redistribute latency...

** (gst-launch-1.0:20833): CRITICAL **: gst_video_decoder_alloc_output_frame:
assertion `frame->output_buffer == NULL' failed

Program received signal SIGTRAP, Trace/breakpoint trap.
[Switching to Thread 0x7ffff22cc700 (LWP 20838)]
g_logv (log_domain=0x0, log_level=G_LOG_LEVEL_CRITICAL, format=0x7ffff722d6e2
"%s: assertion `%s' failed", args1=args1 at entry=0x7ffff22cafe8) at
/tmp/buildd/glib2.0-2.32.3/./glib/gmessages.h:101
101    /tmp/buildd/glib2.0-2.32.3/./glib/gmessages.h: No such file or
directory.
(gdb) bt
#0  g_logv (log_domain=0x0, log_level=G_LOG_LEVEL_CRITICAL,
format=0x7ffff722d6e2 "%s: assertion `%s' failed",
args1=args1 at entry=0x7ffff22cafe8) at
/tmp/buildd/glib2.0-2.32.3/./glib/gmessages.h:101
#1  0x00007ffff71ec4d2 in g_log (log_domain=log_domain at entry=0x0,
log_level=log_level at entry=G_LOG_LEVEL_CRITICAL,
format=format at entry=0x7ffff722d6e2 "%s: assertion `%s' failed") at
/tmp/buildd/glib2.0-2.32.3/./glib/gmessages.c:792
#2  0x00007ffff71ec4f9 in g_return_if_fail_warning
(log_domain=log_domain at entry=0x0,
pretty_function=pretty_function at entry=0x7ffff4fd1f40
"gst_video_decoder_alloc_output_frame", 
    expression=expression at entry=0x7ffff4fd0ec8 "frame->output_buffer == NULL")
at /tmp/buildd/glib2.0-2.32.3/./glib/gmessages.c:801
#3  0x00007ffff4fc0ed6 in gst_video_decoder_alloc_output_frame
(decoder=0x86e390, frame=frame at entry=0x862c20) at gstvideodecoder.c:2829
#4  0x00007ffff148a358 in gst_mpeg2dec_crop_buffer (input_vframe=0x87b1e8,
in_frame=0x862c20, dec=0x86e390) at gstmpeg2dec.c:332
#5  handle_slice (info=0x878300, mpeg2dec=0x86e390) at gstmpeg2dec.c:879
#6  gst_mpeg2dec_handle_frame (decoder=0x86e390, frame=0x7dfd20) at
gstmpeg2dec.c:964
#7  0x00007ffff4fb9d44 in gst_video_decoder_decode_frame
(decoder=decoder at entry=0x86e390, frame=0x7dfd20) at gstvideodecoder.c:2460
#8  0x00007ffff4fbd6bf in gst_video_decoder_chain_forward
(decoder=decoder at entry=0x86e390, buf=buf at entry=0x87c780, at_eos=at_eos at entry=0)
at gstvideodecoder.c:1616
#9  0x00007ffff4fbe769 in gst_video_decoder_chain (pad=<optimized out>,
parent=<optimized out>, buf=0x87c780) at gstvideodecoder.c:1860
#10 0x00007ffff7b48ef8 in gst_pad_chain_data_unchecked (data=0x87c780,
type=<optimized out>, pad=0x834d90) at gstpad.c:3588
#11 gst_pad_push_data (pad=0x8344d0, type=type at entry=4112, data=<optimized
out>, data at entry=0x87c780) at gstpad.c:3801
#12 0x00007ffff7b4f6f6 in gst_pad_push (pad=<optimized out>,
buffer=buffer at entry=0x87c780) at gstpad.c:3904
#13 0x00007ffff58ab26f in gst_base_parse_push_frame
(parse=parse at entry=0x83c990, frame=frame at entry=0x85d8a0) at gstbaseparse.c:2080
#14 0x00007ffff58ae2eb in gst_base_parse_handle_and_push_frame (frame=0x85d8a0,
parse=0x83c990) at gstbaseparse.c:1905
#15 gst_base_parse_finish_frame (parse=parse at entry=0x83c990,
frame=frame at entry=0x85d8a0, size=size at entry=5379) at gstbaseparse.c:2200
#16 0x00007ffff18c2fff in gst_mpegv_parse_handle_frame (parse=0x83c990,
frame=0x85d8a0, skipsize=0x7ffff22cbba8) at gstmpegvideoparse.c:602
#17 0x00007ffff58a8fd4 in gst_base_parse_handle_buffer
(parse=parse at entry=0x83c990, buffer=<optimized out>,
skip=skip at entry=0x7ffff22cbba8, flushed=flushed at entry=0x7ffff22cbbac) at
gstbaseparse.c:1770
#18 0x00007ffff58abe24 in gst_base_parse_chain (pad=<optimized out>,
parent=0x83c990, buffer=<optimized out>) at gstbaseparse.c:2589
#19 0x00007ffff7b48ef8 in gst_pad_chain_data_unchecked (data=0x7dfb00,
type=<optimized out>, pad=0x8342a0) at gstpad.c:3588
#20 gst_pad_push_data (pad=0x834070, type=type at entry=4112, data=<optimized
out>, data at entry=0x7dfb00) at gstpad.c:3801
#21 0x00007ffff7b4f6f6 in gst_pad_push (pad=<optimized out>,
buffer=buffer at entry=0x7dfb00) at gstpad.c:3904
#22 0x00007ffff5b061ed in gst_single_queue_push_one (object=0x7dfb00,
sq=0x7fffec003c20, mq=0x837020) at gstmultiqueue.c:1057
#23 gst_multi_queue_loop (pad=<optimized out>) at gstmultiqueue.c:1303
#24 0x00007ffff7b76971 in gst_task_func (task=0x7bdb40) at gsttask.c:316
#25 0x00007ffff72085f2 in g_thread_pool_thread_proxy (data=<optimized out>) at
/tmp/buildd/glib2.0-2.32.3/./glib/gthreadpool.c:309
#26 0x00007ffff7207df5 in g_thread_proxy (data=0x82f850) at
/tmp/buildd/glib2.0-2.32.3/./glib/gthread.c:801
#27 0x00007ffff6b79b50 in start_thread (arg=<optimized out>) at
pthread_create.c:304
#28 0x00007ffff68c46dd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#29 0x0000000000000000 in ?? ()
(gdb) 

This, and also it doesn't actually seem to make use of the cropping support
offered by e.g. ximagesink or xvimagesink.

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