Re: Regarding the demo shown at CES 2019

[wenlong zheng(鄭 文龍) <wenlong_zheng@xxxxxxxxxxxxx>]

Hi Kikugawa-san

 > 　1. Is this done based on the sample code of server-tcp.js ?
 > 　　 * https://github.com/131/h264-live-player/blob/master/server-tcp.js
→Based on server-static.js, just change video_path to pipe file.

 > 　2. The decode of H.264 is performed inside javascript of 
h264-live-player.
 >       Does that mean it does not use anything like FFmpeg or GStreamer ?
→No, It doesn't use ffmpeg or gstreamer. Use boardway like this.
   https://github.com/mbebenita/Broadway

BR,
Zheng

On 2019/02/07 16:04, developers-linux@xxxxxxxxxxxxx wrote:
> Hi Ohiwa-san
> 
> I have additional questions.
> I'm afraid of asking these kinds of basic questions,
> but that is because I don't have much experience with h264-live-player and JavaScript.
> 
> <List of questions>
> 　1. Is this done based on the sample code of server-tcp.js ?
> 　　 * https://github.com/131/h264-live-player/blob/master/server-tcp.js
> 
> 　2. The decode of H.264 is performed inside javascript of h264-live-player.
>       Does that mean it does not use anything like FFmpeg or GStreamer ?
> 
> Regards,
> Kikugawa
> 
>> Hi Ohiwa-san
>>
>> Thanks for the response.
>>
>>> This demo uses HTML5 instead of Qt and draws with chromium.
>>> Current SDL core on AGL cannot use Qt lib.
>>>
>>> The video stream output from SDL core is raw H.264 and cannot be played
>>> as it is.
>>> In this demo, h264-live-player decodes raw H.264 and Javascript's
>>> Canvas draws on chromium as PoC.
>>
>> Thank you for providing various information.
>> I will try.
>> If I have further questions, I will ask again.
>>
>> Thank you very much.
>>
>> Regards,
>> Kikugawa
>>
>>> Hi Kikugawa-san,
>>>
>>>> For the No.2,
>>>> It is using the navigation image from the smartphone by using SDL.
>>>> Could you tell me how you achieve it ?
>>>
>>> This demo uses HTML5 instead of Qt and draws with chromium.
>>> Current SDL core on AGL cannot use Qt lib.
>>>
>>> The video stream output from SDL core is raw H.264 and cannot be played as
>>> it
>>> is.
>>> In this demo, h264-live-player decodes raw H.264 and Javascript's Canvas
>>> draws on chromium as PoC.
>>>
>>> We cannot post the SDL cord of the demo
>>> because we use some binary codes by the demo of this SDL.
>>> We're going to post other cords of demo 3.
>>>
>>> BR,
>>> Oiwa
>>>
>>> -----Original Message-----
>>> From: developers-linux@xxxxxxxxxxxxx [mailto:developers-linux@xxxxxxxxxxxxx]
>>> Sent: Tuesday, February 05, 2019 8:46 AM
>>> To: 大岩　敏和/TOSHIKAZU OHIWA; automotive-discussions@lists.linuxfoundation.
>>> org
>>> Subject: RE:  Regarding the demo shown at CES 2019
>>>
>>> Hello Ohiwa-san,Walt-san,
>>>
>>> Thanks for the response.
>>>
>>>> For the No.1,
>>>> as Walt-san said, only a few can be posted.
>>>> Currently posting in order.
>>>
>>>> That is a picture of Demo 3. The source code is not available for that demo
>>>> yet. Some of it has been posted in gerrit. Hopefully one of the demo 3
>>>> developers can chime in.
>>> I understand.
>>>
>>>> For the No.2,
>>>> It is using the navigation image from the smartphone by using SDL.
>>> Could you tell me how you achieve it ?
>>>
>>> We are currently trying to achieve the video streaming of the navigation
>>> image(h.264) written in pipe from SDL core by using WebEngineView(+
>>> Gstreamer) and QMediaPlayer of Qt.
>>>
>>> For the above demo, is it implemented by Qt ?
>>> Or is it using something other than Qt ( for instance WaylandSink ) ?
>>>
>>> ※The R-Car M3 is used in the demo machine.
>>>
>>>> By the way,
>>>> I've seen an article where your company is runnig SDL in AGL.
>>>> Are you still continuing now?
>>> Yes, we are still doing various things.
>>>
>>> Regards,
>>> Kikugawa
>>>
>>>> Hello kikugawa-san,
>>>>
>>>> I reply to your questions.
>>>>
>>>> For the No.1,
>>>> as Walt-san said, only a few can be posted.
>>>> Currently posting in order.
>>>>
>>>> For the No.2,
>>>> It is using the navigation image from the smartphone by using SDL.
>>>>
>>>> By the way,
>>>> I've seen an article where your company is runnig SDL in AGL.
>>>> Are you still continuing now?
>>>>
>>>> BR,
>>>> Toshikazu Oiwa
>>>>
>>>> -----Original Message-----
>>>> From: automotive-discussions-bounces@xxxxxxxxxxxxxxxxxxxxxxxxx [mailto:
>>>> automotive-discussions-bounces@xxxxxxxxxxxxxxxxxxxxxxxxx] On Behalf Of
>>>> developers-linux@xxxxxxxxxxxxx
>>>> Sent: Friday, February 01, 2019 8:18 PM
>>>> To: automotive-discussions@xxxxxxxxxxxxxxxxxxxxxxxxx
>>>> Subject:  Regarding the demo shown at CES 2019
>>>>
>>>> Hello,
>>>>
>>>> I'd like to know the details about the demo that was exibited at CES 2019(*
>>>> 1)
>>>> ?
>>>> (*1)http://monoist.atmarkit.co.jp/mn/articles/1901/16/news070.html
>>>>
>>>> I have the following questions. Could you send me the answers for them ?
>>>>
>>>> 1. Is the source of the demo at CES 2019 opened to the public ?
>>>>    If it is not yet opened, do you have the plan to make it open to the
>>>> public ?
>>>>
>>>> 2. There is the picture(the 4th) that the navigation and the music screen
>>>> (Spotify) are both displayed.
>>>>    For the navigation image, is it using the navigation image from the
>>>> smartphone by using SDL ?
>>>>    Or the navigation image is displayed by using Mapbox ?
>>>>
>>>> Regards,
>>>> kikugawa
>>>> _______________________________________________
>>>> automotive-discussions mailing list
>>>> automotive-discussions@xxxxxxxxxxxxxxxxxxxxxxxxx
>>>> https://lists.linuxfoundation.org/mailman/listinfo/automotive-discussions
> _______________________________________________
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