Hey Francesco
Great! thanks.
I am busy evaluating the best way to do this and will maybe run something
through the list again.
I assume you used the intel IPP sample app for creating g729 files? I
managed to integrate the intel IPP g729 codec into SEMS as an exercise but
we'd rather not pay G729 license and we'd also prefer not to have to
transocde media on SEMS to save CPU. So ultimately we're looking at adding
the precoded file Read and Write scenario. Lets see how far we get. Will be
in touch with the list re. ideas, help, etc.
Cheers
Jason
On Wed, Dec 3, 2008 at 7:41 PM, Francesco.giordano <
[EMAIL PROTECTED]> wrote:
>
> Hi,
>
> I was working on the same problem as the one Jason mentioned, but I managed
> to make it functioned. Basically, I started by the precoded_announce
> application and I modified it a bit, in order to parse the input parameters
> and let the user play an announcement more than one time. My file is a
> precoded file in g729 format that the user can specify through its request.
> Here is the most important function:
>
> void PrecodedDialog::onSessionStart(const AmSipRequest& req)
> {
> int current_payload=rtp_str.getCurrentPayload();
> if ((current_payload == -1) && !m_payloads.empty()) {
> current_payload = m_payloads[0]->payload_type;
> }
>
> AmPlaylist* playlist = new AmPlaylist(this);
> while(repeat--){
> AmPrecodedFileInstance* file =
> file_def->getFileInstance(current_payload, m_payloads);
>
> if (!file) {
> ERROR("no payloadn");
> }
> if (!file || file->open()) {
> ERROR("PrecodedDialog::onSessionStart: Cannot open filen");
> dlg.bye();
> setStopped();
> return;
> }
>
> rtp_str.setFormat(file->getRtpFormat());
>
> AmPlaylistItem* item = new AmPlaylistItem(file, NULL);
> playlist->addToPlaylist(item);
> }
>
> setOutput(playlist);
> setReceiving(false);
> }
>
>
> I made use of a playlist in order to possibly repeat the file. I think that
> the most difficult part is to retrieve the G729 files. I used a free
> converter that intel has made available.
>
> In order to make it possible to manage other codecs as well, upon received
> the INVITE and parsed the file name, my application tries to load files with
> the same name as the specified one but with different extension, e.g.:
> file.ul, file.al, file.g729. Maybe it's not that smart, but I wasn't able
> to find out anything better.
>
> If it can be of any help, I can post my entire application, but I think the
> most important part is the one I copied. Basically is what Stephan suggested
> to me, when I asked him for the same problem.
>
> Hope it was helpful,
>
> Cheers,
> - Francesco.
>
>
>
>
>
> --------- Original Message --------
> Da: "Jason Penton" <[EMAIL PROTECTED]>
> To: "Raphael Coeffic" <[EMAIL PROTECTED]>
> Cc: "[email protected]" <[EMAIL PROTECTED]>
> Oggetto: Re: [Semsdev] g729 native format
> Data: 03/12/08 15:37
>
> Thanks Stefan, Raphael!
>
> I will see what I can come up with
>
> Cheers
> Jason
>
> On Wed, Dec 3, 2008 at 4:32 PM, Raphael Coeffic <[EMAIL PROTECTED]> wrote:
>
>> Jason Penton wrote:
>>
>>> Hi Raphael,
>>>
>>> not sure what you mean by "WAV with g.729" but i was thinking of having
>>> precoded files like default.g729 default.wav and depending on the codec
>>> negotiated with each call the appropriate "bytestream" is served.
>>>
>>> The WAV format does not force the encoding of the bit stream. There are
>> several encoding supported within the WAV format, among which is g729. At
>> the moment, SEMS only supports WAV files with Ulaw, Alaw and PCM16 encoding.
>> What you propose is indeed already included, but as Stefan pointed out,
>> there are some bugs for codecs which are supported otherwise by SEMS.
>>
>> comments?
>>>
>>> p.s. could you elaborate on the existing "pre-coded announcements"
>>>
>> sems/trunk/apps/precoded_announce ;-)
>>
>> -Raphael.
>>
>>>
>>> cheers
>>> Jason
>>>
>>> On Wed, Dec 3, 2008 at 3:58 PM, Raphael Coeffic <[EMAIL PROTECTED] <mailto:
>>> [EMAIL PROTECTED]>> wrote:
>>>
>>> Jason Penton wrote:
>>>
>>> Hi All,
>>>
>>> Would there be any merit adding a native g729 file format to
>>> SEMS so that media can be streamed from the server without
>>> having to license the g729 codec. I would be happy to work on
>>> the code but was interested in what the guys like Stefan,
>>> Raphael and the rest of the list think about such a feature?
>>>
>>> Do you mean WAV with g.729? We already have some kind of support
>>> with the pre-coded announces, but supporting a wide deployed file
>>> format would be better.
>>>
>>> -Raphael.
>>>
>>> cheers
>>> Jason
>>>
>>> ------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> Semsdev mailing list
>>> [email protected] <mailto:[email protected]>
>>> http://lists.iptel.org/mailman/listinfo/semsdev
>>>
>>>
>>>
>>>
>>
>
>
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