Error using dshwodecwrapper

Wed Sep 7 14:58:34 PDT 2011

Hi

BTW I tried v2.0 of wma which is causing the same issue.

Can you let me know where is latest acmmp3dec plugin available?

Thank you very much for your help so far!

Srinivas

Date: Wed, 7 Sep 2011 13:38:28 -0700
From: Michael Smith <msmith at xiph.org>
Subject: Re: Error using dshwodecwrapper
To: Discussion of the development of and with GStreamer
       <gstreamer-devel at lists.freedesktop.org>
Message-ID:
       <CAB=BY8tbALOL6pYvu3VipQXWJRr3MmJRi0Xp3qS0RiH5jMbaPw at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

The registry is always required - even on the first run, it gets
created and then used.

You may be right that there's a race condition of some sort; you'll
need to debug that. However, be warned: the dshow mp3 decoder does not
work very well with real-world mp3 files, it'll frequently error out.
This is not a problem with the gstreamer wrapper, it's a problem with
the underlying dshow element.

On windows, you can instead use the acmmp3dec element.

The WMA problem remains simply that you're using a decoder for a
different format from what your file actually contains.

Mike

On Wed, Sep 7, 2011 at 2:04 PM, Srinivas Sakhamuri
<sr.sakhamuri at gmail.com>wrote:

> I have some more information on this, when I remove the registry bin file
> then I don't receive the error filesrc0 (see FIRST LOG below) and it starts
> playing the mp3 file, I didn't have much success with wma files.
>
> And when the registry is removed it starts to play look at the SECOND LOG.
>
> I am guessing there is some timing issue from the first push and when
> decoder is ready causing the erratic behaviour, which probably eliminated
> when all the plugins are being iterated for registry creation.
>
> Is there a way we can skip the registry creation, is it only a compile time
> option?
>
> Windows builds (http://code.google.com/p/ossbuild/) are probably a bit
> older is there a fix in the later releases for any registry related bug?
>
>
> FIRST LOG:
> dshow_adec_register
> gst_dshowaudiodec_base_init
> gst_dshowaudiodec_class_init
> gst_dshowaudiodec_init
> Setting pipeline to PAUSED ...
> gst_dshowaudiodec_change_state
> gst_dshowaudiodec_create_graph_and_filters
> gst_dshowaudiodec_create_graph_and_filters_task
> gst_dshowaudiodec_change_state
> Pipeline is PREROLLING ...
> gst_dshowaudiodec_sink_event
> gst_dshowaudiodec_sink_event
> gst_dshowaudiodec_sink_event
> gst_dshowaudiodec_sink_event
> ERROR: from element /GstPipeline:pipeline0/GstFileSrc:filesrc0: Internal
> data flow error.
> Additional debug info:
> gstbasesrc.c(2543): gst_base_src_loop ():
> /GstPipeline:pipeline0/GstFileSrc:filesrc0:
> streaming task paused, reason not-negotiated (-4)
> ERROR: pipeline doesn't want to preroll.
> Setting pipeline to NULL ...
> gst_dshowaudiodec_change_state
> gst_dshowaudiodec_change_state
> gst_dshowaudiodec_destroy_graph_and_filters
> gst_dshowaudiodec_destroy_graph_and_filters_task
> Freeing pipeline ...
>
> SECOND LOG:
> dshow_adec_register
> gst_dshowaudiodec_base_init
> gst_dshowaudiodec_class_init
> gst_dshowaudiodec_base_init
> gst_dshowaudiodec_class_init
> gst_dshowaudiodec_base_init
> gst_dshowaudiodec_class_init
> gst_dshowaudiodec_base_init
> gst_dshowaudiodec_class_init
> gst_dshowaudiodec_base_init
> gst_dshowaudiodec_class_init
> gst_dshowaudiodec_base_init
> gst_dshowaudiodec_class_init
> gst_dshowaudiodec_base_init
> gst_dshowaudiodec_class_init
> gst_dshowaudiodec_init
> Setting pipeline to PAUSED ...
> gst_dshowaudiodec_change_state
> gst_dshowaudiodec_create_graph_and_filters
> gst_dshowaudiodec_create_graph_and_filters_task
> gst_dshowaudiodec_change_state
> Pipeline is PREROLLING ...
> gst_dshowaudiodec_sink_event
> gst_dshowaudiodec_sink_event
> gst_dshowaudiodec_sink_event
> gst_dshowaudiodec_sink_setcaps
> gst_dshowaudiodec_setup_graph
> gst_dshowaudiodec_setup_graph_task
> dshowaudiodec_set_input_format
> dshowaudiodec_set_output_format
> gst_dshowaudiodec_get_filter_settings
> AudioFakeSink::CheckMediaType
> gst_dshowaudiodec_chain
> gst_dshowaudiodec_chain_task
> gst_dshowaudiodec_flush
> gst_dshowaudiodec_chain
> gst_dshowaudiodec_chain_task
> Pipeline is PREROLLED ...
> Setting pipeline to PLAYING ...
> gst_dshowaudiodec_change_state
> gst_dshowaudiodec_chain
>
>
> Srinivas
>
>
> On Wed, Sep 7, 2011 at 4:50 AM, Srinivas Sakhamuri <sr.sakhamuri at gmail.com
> > wrote:
>
>> Hi
>>
>> Decodebin2 is picking up ffmpeg codec which is not what I want,
>>
>> Adding asfdemux is not working either, in the following pipeline
>>
>> this works ok: gst-launch -ev  --gst-plugin-spew filesrc
>> location=c:\\Heavy.wma ! asfdemux ! ffdec_wmav2 ! autoaudiosink
>>
>> but this doesn't work: gst-launch -ev  --gst-plugin-spew filesrc
>> location=c:\\Heavy.wma ! asfdemux ! dshowadec_wma4 ! autoaudiosink
>>
>> I think the problem is with dshowadec_wma4, and dshowadec_mp3 playback
>> also doesn't work. I tried debugging the issue but not being familiar with
>> the code it could take a while.
>>
>> Can anybody help me point out the issue with dshowdecwrapper or provide me
>> directshow filter related debugging tips to root out this issue?
>>
>> Srinivas
>>
>>
>> Date: Tue, 6 Sep 2011 16:26:00 -0700
>> From: Michael Smith <msmith at xiph.org>
>> Subject: Re: Error using dshwodecwrapper
>> To: Discussion of the development of and with GStreamer
>>        <gstreamer-devel at lists.freedesktop.org>
>> Message-ID:
>>        <CAB=BY8uTUKH-Hj=_
>> PyZArs0Fk_zK9OHQeVN951rDHkUrzsab2A at mail.gmail.com>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>> You will need asfdemux in there; WMA files are ASF containing WMA.
>> Then the decoder you need to use will depend on exactly what codec is
>> used in your file.
>>
>> If you use decodebin2, this will all be done for you automatically.
>>
>> Mike
>>
>>
>> On Tue, Sep 6, 2011 at 5:07 PM, Srinivas Sakhamuri <
>> sr.sakhamuri at gmail.com> wrote:
>>
>>> Hi
>>>
>>> I am facing few problems using the dshowdecwrapper's elements
>>> dshowadec_mp3 and wma
>>>
>>> Here is the pipeline commandline: gst-launch  filesrc
>>> location=c:\\mellow.wma ! dshowadec_wma4 ! audioconvert ! directsoundsink
>>>
>>> Is the right way to construct the pipeline? It always hangs at
>>> pre-rolling. Debugging it I found it's not
>>> calling gst_dshowaudiodec_sink_setcaps function and calling
>>> directly gst_dshowaudiodec_chain, not sure it is correct or not.
>>>
>>> I have attached the zip file with the error log at debug level 5. Can you
>>> please let me know if there is something with the element or pipeline
>>> construction etc.
>>>
>>> Error log is also here: http://dl.dropbox.com/u/418325/error.zip
>>>
>>> thanks
>>> Srinivas
>>>
>>
>>
>
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