gstreamer got SIGSEGV when run on android

[Peter Xu]

Hi, all,

With the help of gstreamer wiki, I have successfully ported gstreamer to android gingerbread. (by fixing some gst-plugin-base version checks both in gst-editing-services and gst-plugins-good, and change SO_MAX to 512 in bionic/linker/linker.c) However, I failed to run a gst-launch script and got SIGSEGV.

Firstly, I tried gst-inspect to see if gstreamer works. It seems ok (but with some warnings):

=====================START=======================

xzpeter@xzpeter-HP-Compaq-8100-Elite-SFF-PC:~$ adb shell gst-inspect

(gst-inspect-0.10:437): GStreamer-WARNING **: External plugin loader failed. This most likely means that the plugin loader helper binary was not found or could not be run. 

** (gst-inspect-0.10:437): WARNING **: could not find config file '/system/gst-openmax.conf'.. using defaults!

cdxaparse:  cdxaparse: (S)VCD parser

cdxaparse:  vcdparse: (S)VCD stream parser

replaygain:  rganalysis: ReplayGain analysis

replaygain:  rglimiter: ReplayGain limiter

replaygain:  rgvolume: ReplayGain volume

...... (skip many modules here)

adder:  adder: Adder

staticelements:  bin: Generic bin

staticelements:  pipeline: Pipeline object

Total count: 131 plugins, 494 features

=======================END=====================

Then, I tried to run a demo script on it. The script is retrieved from gstreamer examples (with some small modifications by me) and works well on PC, whose main work is to generate a test video stream->encode->send via udp packages. The server script is shown below(named server.sh):

====================START========================

# change this to send the RTP data and RTCP to another host

# this is the host addr in android emulator

DEST=10.0.2.2

# tuning parameters to make the sender send the streams out of sync. Can be used

# ot test the client RTCP synchronisation.

#VOFFSET=900000000

VOFFSET=0

AOFFSET=0

# H264 encode from the source

VELEM="videotestsrc"

#VELEM="peterfilter"

#VCAPS="video/x-raw-yuv,width=352,height=288,framerate=15/1"

VCAPS="video/x-raw-yuv,framerate=5/1"

#VSOURCE="$VELEM ! queue ! videorate ! ffmpegcolorspace ! $VCAPS"

VSOURCE="$VELEM ! ffmpegcolorspace ! $VCAPS"

VENC="x264enc tune=zerolatency byte-stream=true bitrate=300 ! rtph264pay"

VRTPSINK="udpsink port=5000 host=$DEST ts-offset=$VOFFSET name=vrtpsink"

VRTCPSINK="udpsink port=5001 host=$DEST sync=false async=false name=vrtcpsink"

VRTCPSRC="udpsrc port=5005 name=vrtpsrc"

# PCMA encode from the source

#AELEM="autoaudiosrc"

AELEM="audiotestsrc is-live=1"

ASOURCE="$AELEM ! queue ! audioresample ! audioconvert"

AENC="alawenc ! rtppcmapay"

ARTPSINK="udpsink port=5002 host=$DEST ts-offset=$AOFFSET name=artpsink"

ARTCPSINK="udpsink port=5003 host=$DEST sync=false async=false name=artcpsink"

ARTCPSRC="udpsrc port=5007 name=artpsrc"

PLUGIN_PATH="/home/xzpeter/intel/gstreamer/gst-template/gst-plugin"

gst-launch -v --gst-plugin-path=$PLUGIN_PATH gstrtpbin name=rtpbin \

    $VSOURCE ! $VENC ! rtpbin.send_rtp_sink_0                                             \

        rtpbin.send_rtp_src_0 ! $VRTPSINK                                                 \

        rtpbin.send_rtcp_src_0 ! $VRTCPSINK                                               \

      $VRTCPSRC ! rtpbin.recv_rtcp_sink_0                                                 \

    $ASOURCE ! $AENC ! rtpbin.send_rtp_sink_1                                             \

        rtpbin.send_rtp_src_1 ! $ARTPSINK                                                 \

        rtpbin.send_rtcp_src_1 ! $ARTCPSINK                                               \

      $ARTCPSRC ! rtpbin.recv_rtcp_sink_1

======================END======================

I stored the server.sh to /data/server.sh on android emulator by adb push and ran it. However, this time gstreamer got SIGSEGV:

====================START========================

xzpeter@xzpeter-HP-Compaq-8100-Elite-SFF-PC:~$ adb shell sh /data/server.sh

(gst-launch-0.10:430): GStreamer-WARNING **: External plugin loader failed. This most likely means that the plugin loader helper binary was not found or could not be run. 

** (gst-launch-0.10:430): WARNING **: could not find config file '/system/gst-openmax.conf'.. using defaults!

Caught SIGSEGV accessing address 0xdc

Spinning.  Please run 'gdb gst-launch 430' to continue debugging, Ctrl-C to quit, or Ctrl-\ to dump core.

========================END====================

I want to figure out what is the problem here. but how should I do the debugging? (I know android SDK provide some way on debugging, and ndk-gdb too. Nevertheless, these two ways seems not suitable for gstreamer debugging?)

Or, can anyone give me any suggestion on resolving this?

Peter

_______________________________________________
gstreamer-devel mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel