Re: [gst-embedded] gstreamer / glib on powerpc

2010-07-22 Thread Herb Peyerl 

Solved.

So there were a couple of problems.

First problem:

 - gstreamer calls register_printf_specifier to register some printf extensions.
 - however, the glib supplied *printf family doesn't support registered 
extensions.
 - since I was cross-compiling, autoconf couldn't do AC_TRY_RUN()
   to determine whether my target's *printf() was
   C98/C99/positional-parameters compliant and as such defaulted
   to 'no' which meant I got the glib built-in printf which doesn't
   support the registration of extensions and hence any debugging
   output containing any of the custom format characters simply
   failed.

First problem resolved why we were unable to get any reasonable debug output.

Second problem was the consistant failures to negotiate among streams and so 
forth.

This turned out to be a steady belief within gstreamer that our PowerPC was 
little-endian
and hence the various 64 bit scaling functions (and probably lots of other 
things) were
incorrectly manipulating int's...  The fix turned out to require us passing 
GLIB_CFLAGS
to 'configure' to point at our cross-compile sys-root instead of 
/usr/include/glib-2.0.
This allowed glib.h to find glibconfig.h and everything became immediately 
happier.


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Re: [gst-embedded] gstreamer / glib on powerpc

2010-07-20 Thread Ray Lehtiniemi 
On 10-07-19 10:05 AM, Herb Peyerl wrote:
 I've pretty much run out of traction here and could really use some hints or 
 guidance ... I can provide full debug transcripts if anyone is willing to 
 look at them...

i've done a bit of gstreamer debugging in the recent past. if you can 
zip up a level 5 debug capture, i'll have a look and try to spot 
anything fishy.

cheers
ray


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[gst-embedded] gstreamer / glib on powerpc

2010-07-19 Thread Herb Peyerl 
gstreamer-0.10.29
glib-2.22.4
eglibc-2.9
gcc-4.3.2
linux powerpc 2.6.33.3

I'm having problems making straight forward and simple pipelines work 
correctly.  I've confirmed that my audio hardware is functional and using 
aplay, I can play a .wav file.

Always working with the same wav file, on my Ubuntu host using the above 
gstreamer and plugins built from the same tarballs, the wav file plays fine.  
On my Powerpc target:

$ gst-launch-0.10 filesrc location=root/M1F1-int16-AFsp.wav ! wavparse 
! audioconvert ! alsasink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
Got EOS from element pipeline0.
Execution ended after 5306969 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...


There's no active complaint from gstreamer however, 5ms is too short for this 
particular wav file and nothing comes out the headphones..

Contrast the above with what happens on my Ubuntu host:

$ gst-launch-0.10 filesrc location=root/M1F1-int16-AFsp.wav ! wavparse 
! audioconvert ! alsasink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstAudioSinkClock
Got EOS from element pipeline0.
Execution ended after 2983682238 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...

There are 2 differences:  Duration of execution and GstSystemClock vs 
GstAudioSinkClock.

The other pipeline I have trouble with is this on my PowerPC target:

$ gst-launch-0.10 audiotestsrc ! alsasink
Setting pipeline to PAUSED ...
ERROR: Pipeline doesn't want to pause.
ERROR: from element 
/GstPipeline:pipeline0/GstAudioTestSrc:audiotestsrc0: Could not negotiate format
Additional debug info:
gstbasesrc.c(2756): gst_base_src_start (): 
/GstPipeline:pipeline0/GstAudioTestSrc:audiotestsrc0:
Check your filtered caps, if any
Setting pipeline to NULL ...
Freeing pipeline ...

Of course, this works just fine on my Ubuntu host.

However, I think the real problem may be glib related but I'm not sure... If I 
crank up the debugging, I see a lot of this sort of thing:

0:00:01.180719727  1173 0x10017018 DEBUGbin 
gstbin.c:508:gst_bin_init:gst...@0x10084098 (null)
0:00:01.244416303  1173 0x10017018 DEBUG   GST_CAPS 
gstpad.c:2143:gst_pad_get_caps_unlocked:filesrc0:src (null)
0:00:01.247998121  1173 0x10017018 DEBUG   GST_CAPS 
gstpad.c:2172:gst_pad_get_caps_unlocked:wavparse0:sink (null)
0:00:01.264648060  1173 0x10017018 DEBUG   GST_CAPS 
gstpad.c:1787:gst_pad_link_check_compatible_unlocked: (null)
0:00:01.26506  1173 0x10017018 DEBUG   GST_CAPS 
gstpad.c:1788:gst_pad_link_check_compatible_unlocked: (null)
0:00:01.736997180  1173 0x10017018 DEBUG   GST_CAPS 
gstpad.c:2143:gst_pad_get_caps_unlocked:filesrc0:src (null)
0:00:01.737473817  1173 0x10017018 DEBUGbasesrc 
gstbasesrc.c:2576:gst_base_src_default_negotiate:filesrc0 (null)
0:00:02.028507968  1173 0x1008daf8 INFOwavparse 
gstwavparse.c:1129:gst_wavparse_calculate_duration:wavparse0 Got duration 
(bps) 99:99:99.9
0:00:02.051951332  1173 0x1008daf8 DEBUG   wavparse 
gstwavparse.c:956:gst_wavparse_perform_seek:wavparse0 seek: rate 1.00, 
offset 40, end 40, segment 0:00:00.0 -- 99:99:99.9
0:00:02.052638847  1173 0x1008daf8 DEBUG   wavparse 
gstwavparse.c:994:gst_wavparse_perform_seek:wavparse0 Creating newsegment 
from 0 to -1
0:00:02.053208271  1173 0x1008daf8 INFO   GST_EVENT 
gstevent.c:599:gst_event_new_new_segment_full: creating newsegment update 0, 
rate 1.00, format GST_FORMAT_TIME, start 0:00:00.0, stop 
99:99:99.9, position 0:00:00.0



It's almost as though glib is having trouble outputting On my host, the 
(null)s are actually replaced by the textual representation of the caps and the 
times are real-looking... 

I built the glib test suite and ran it on my target, and it ran fine (as fine 
as it does on my host)... Even the printf test reported all 'OK'...


I've pretty much run out of traction here and could really use some hints or 
guidance ... I can provide full debug transcripts if anyone is willing to look 
at them... 

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