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streaming a wav file into g711 alaw rtp stream

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Terry Leung-2

streaming a wav file into g711 alaw rtp stream

Hi all,

I try to stream a wav file which is encoded in uncompressed 16bit pcm data

I try the following pipeline and it doesnt work

gst-launch -m filesrc location=test3.wav ! wavparse ! audioconvert !
alawenc ! rtppcmapay ! udpsink host=172.20.122.23 port=19790

I can get the following working
gst-launch -m audiotestsrc ! alawenc ! rtppcmapay ! udpsink
host=172.20.122.23 port=19790

I am not very sure if it need decoder or not after wavparse
anyone know?

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ved kpl

Re: streaming a wav file into g711 alaw rtp stream

Hi,

By "doesnt work" do you mean that the sender is failing or You are not
getting anything at the receiving end. Can You post the logs also?

Cheers
Ved

On Thu, Aug 21, 2008 at 1:08 PM, Terry Leung <[hidden email]> wrote:

> Hi all,
>
> I try to stream a wav file which is encoded in uncompressed 16bit pcm data
>
> I try the following pipeline and it doesnt work
>
> gst-launch -m filesrc location=test3.wav ! wavparse ! audioconvert !
> alawenc ! rtppcmapay ! udpsink host=172.20.122.23 port=19790
>
> I can get the following working
> gst-launch -m audiotestsrc ! alawenc ! rtppcmapay ! udpsink
> host=172.20.122.23 port=19790
>
>
> I am not very sure if it need decoder or not after wavparse
> anyone know?
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
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> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>

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Terry Leung-2

Re: streaming a wav file into g711 alaw rtp stream

Hi ,

sorry, forgot to include the error message

-bash-3.00$ gst-launch -m filesrc location=test3.wav ! wavparse !
audioconvert ! alawenc ! rtppcmapay ! udpsink host=172.20.122.23
port=19790
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Got Message from element "udpsink0" (state-changed): GstMessageState,
old-state=(GstState)GST_STATE_NULL,
new-state=(GstState)GST_STATE_READY,
pending-state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "rtppmcapay0" (state-changed):
GstMessageState, old-state=(GstState)GST_STATE_NULL,
new-state=(GstState)GST_STATE_READY,
pending-state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "alawenc0" (state-changed): GstMessageState,
old-state=(GstState)GST_STATE_NULL,
new-state=(GstState)GST_STATE_READY,
pending-state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "audioconvert0" (state-changed):
GstMessageState, old-state=(GstState)GST_STATE_NULL,
new-state=(GstState)GST_STATE_READY,
pending-state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "wavparse0" (state-changed): GstMessageState,
old-state=(GstState)GST_STATE_NULL,
new-state=(GstState)GST_STATE_READY,
pending-state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "filesrc0" (state-changed): GstMessageState,
old-state=(GstState)GST_STATE_NULL,
new-state=(GstState)GST_STATE_READY,
pending-state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "pipeline0" (state-changed): GstMessageState,
old-state=(GstState)GST_STATE_NULL,
new-state=(GstState)GST_STATE_READY,
pending-state=(GstState)GST_STATE_PAUSED;
Got Message from element "rtppmcapay0" (state-changed):
GstMessageState, old-state=(GstState)GST_STATE_READY,
new-state=(GstState)GST_STATE_PAUSED,
pending-state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "alawenc0" (state-changed): GstMessageState,
old-state=(GstState)GST_STATE_READY,
new-state=(GstState)GST_STATE_PAUSED,
pending-state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "audioconvert0" (state-changed):
GstMessageState, old-state=(GstState)GST_STATE_READY,
new-state=(GstState)GST_STATE_PAUSED,
pending-state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "wavparse0" (state-changed): GstMessageState,
old-state=(GstState)GST_STATE_READY,
new-state=(GstState)GST_STATE_PAUSED,
pending-state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "filesrc0" (state-changed): GstMessageState,
old-state=(GstState)GST_STATE_READY,
new-state=(GstState)GST_STATE_PAUSED,
pending-state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "wavparse0" (tag): taglist,
audio-codec=(string)"Uncompressed\ 8-bit\ PCM\ audio";
Got Message from element "wavparse0" (error): GstMessageError,
gerror=(GstGError)(NULL), debug=(string)"gstwavparse.c$1778$:\
gst_wavparse_loop\ :\ /pipeline0/wavparse0:\012streaming\ task\
paused\,\ reason\ not-linked\ $-1$";
ERROR: from element /pipeline0/wavparse0: Internal data flow error.
Additional debug info:
gstwavparse.c(1778): gst_wavparse_loop (): /pipeline0/wavparse0:
streaming task paused, reason not-linked (-1)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
FREEING pipeline ...

This one is another file which is 8bit pcm audio instead of 16bit I
mentioned before
However, both of them have the same result

thank you

Regards,
Terry

On Thu, Aug 21, 2008 at 3:51 PM, ved kpl <[hidden email]> wrote:

> Hi,
>
> By "doesnt work" do you mean that the sender is failing or You are not
> getting anything at the receiving end. Can You post the logs also?
>
> Cheers
> Ved
>
> On Thu, Aug 21, 2008 at 1:08 PM, Terry Leung <[hidden email]> wrote:
>> Hi all,
>>
>> I try to stream a wav file which is encoded in uncompressed 16bit pcm data
>>
>> I try the following pipeline and it doesnt work
>>
>> gst-launch -m filesrc location=test3.wav ! wavparse ! audioconvert !
>> alawenc ! rtppcmapay ! udpsink host=172.20.122.23 port=19790
>>
>> I can get the following working
>> gst-launch -m audiotestsrc ! alawenc ! rtppcmapay ! udpsink
>> host=172.20.122.23 port=19790
>>
>>
>> I am not very sure if it need decoder or not after wavparse
>> anyone know?
>>
>> -------------------------------------------------------------------------
>> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
>> Build the coolest Linux based applications with Moblin SDK & win great prizes
>> Grand prize is a trip for two to an Open Source event anywhere in the world
>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
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>

Wim Taymans

Re: streaming a wav file into g711 alaw rtp stream

In reply to this post by Terry Leung-2

On Thu, 2008-08-21 at 15:38 +0800, Terry Leung wrote:
> Hi all,
>
> I try to stream a wav file which is encoded in uncompressed 16bit pcm data
>
> I try the following pipeline and it doesnt work
>
> gst-launch -m filesrc location=test3.wav ! wavparse ! audioconvert !
> alawenc ! rtppcmapay ! udpsink host=172.20.122.23 port=19790
>

rtppcmapay only accepts 8KHz samplerates. Add audioresample after
audioconvert to make it work.

Wim

> I can get the following working
> gst-launch -m audiotestsrc ! alawenc ! rtppcmapay ! udpsink
> host=172.20.122.23 port=19790
>
>
> I am not very sure if it need decoder or not after wavparse
> anyone know?
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

Terry Leung-2

Re: streaming a wav file into g711 alaw rtp stream

Hi Wim,

This fix my problem
thank you very much

Terry

On Thu, Aug 21, 2008 at 4:37 PM, Wim Taymans <[hidden email]> wrote:

> On Thu, 2008-08-21 at 15:38 +0800, Terry Leung wrote:
>> Hi all,
>>
>> I try to stream a wav file which is encoded in uncompressed 16bit pcm data
>>
>> I try the following pipeline and it doesnt work
>>
>> gst-launch -m filesrc location=test3.wav ! wavparse ! audioconvert !
>> alawenc ! rtppcmapay ! udpsink host=172.20.122.23 port=19790
>>
>
> rtppcmapay only accepts 8KHz samplerates. Add audioresample after
> audioconvert to make it work.
>
> Wim
>
>> I can get the following working
>> gst-launch -m audiotestsrc ! alawenc ! rtppcmapay ! udpsink
>> host=172.20.122.23 port=19790
>>
>>
>> I am not very sure if it need decoder or not after wavparse
>> anyone know?
>>
>> -------------------------------------------------------------------------
>> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
>> Build the coolest Linux based applications with Moblin SDK & win great prizes
>> Grand prize is a trip for two to an Open Source event anywhere in the world
>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>