[200] Airplay server for C200 and A100

[infinite.recursion]

Found this article a little while back which talks about reverse-engineering the AirTunes stream. Apparently, there is both an encrypted and unencrypted version of the stream depending on what device you are streaming to. It is an older article, so things may have changed, but it might prove useful in unlocking more features for us.

http://blog.technologeek.org/airtunes-v2

[popcornmix]

(01-04-2011 06:56 PM)infinite.recursion Wrote:  Found this article a little while back which talks about reverse-engineering the AirTunes stream. Apparently, there is both an encrypted and unencrypted version of the stream depending on what device you are streaming to. It is an older article, so things may have changed, but it might prove useful in unlocking more features for us.

http://blog.technologeek.org/airtunes-v2

Interesting, but to be convinced I'd like to see someone who has implemented this. Is there any software available that makes a PC act as an AirTunes client? (i.e. iTunes detects your PC as a destination for audio).

[halfelite]

(01-04-2011 01:27 PM)popcornmix Wrote:  Another request. I play photos with a request like:
http://<popcorn IP>:8008/playback?arg0=start_pod&arg1=My-Test-Photo&arg2=http://jquery.com/demo/thickbox-3/images/plant1.jpg&arg3=1&arg4=rot0&arg5=bghide

which doesn't display the photo immediately. You still need to press source button and switch to app mode.
The equivalent video playback command does not require this.

Anyone know how to switch to app mode programmatically? E.g. from a http request, as a shell command or from C code?

There is a api option called load_page it might switch over to flash I know there is an arg to tell it to switch from flash but not sure if there is one telling it to go to flash. Make sure you have gotten the sdk api docs in the last couple weeks as there were updated again with new commands. I know there is an arg to tell it to switch from flash but not sure if there is one telling it to go to flash.

[infinite.recursion]

(01-04-2011 07:29 PM)popcornmix Wrote:  Interesting, but to be convinced I'd like to see someone who has implemented this. Is there any software available that makes a PC act as an AirTunes client? (i.e. iTunes detects your PC as a destination for audio).

I think there is a Mac implementation called AirFoil, not sure what the state of progress is on it yet. From what I understand the AirPlay audio stream is AES encrypted with a one-time key that is sent encrypted via asymmetric key encryption. The two links below explain it in a little more detail. They are also a year or more old, so it is possible that someone has made more progress with this since.

http://en.wikipedia.org/wiki/Remote_Audi...t_Protocol

http://mailman.videolan.org/pipermail/vl...54010.html

I'll keep doing some more research into this to see what I can come up with.

[popcornmix]

(01-04-2011 07:34 PM)halfelite Wrote:  There is a api option called load_page it might switch over to flash I know there is an arg to tell it to switch from flash but not sure if there is one telling it to go to flash. Make sure you have gotten the sdk api docs in the last couple weeks as there were updated again with new commands. I know there is an arg to tell it to switch from flash but not sure if there is one telling it to go to flash.

It seems that will get me back from flash mode, but not into it. Just found this:

2.3.22 send_key
Send remote control key to command server.
Parameter Description Data Type
arg0 Function name String
arg1 Any options returns from list_key function String
arg2 Call this command from, possible value:
playback
photo
screen_saver
browser
flashlite

Maybe:
http://<IP>:8008/system?arg0=send_key&arg2=source&arg3=flashlite

Will try when I get home.

[infinite.recursion]

(01-04-2011 08:32 PM)popcornmix Wrote:  It seems that will get me back from flash mode, but not into it. Just found this:

2.3.22 send_key
Send remote control key to command server.
Parameter Description Data Type
arg0 Function name String
arg1 Any options returns from list_key function String
arg2 Call this command from, possible value:
playback
photo
screen_saver
browser
flashlite

Maybe:
http://<IP>:8008/system?arg0=send_key&arg2=source&arg3=flashlite

Will try when I get home.

I got bored and gave the line above a try, it kicks back the following code from Firefox:

Code:

<?xml version="1.0" encoding="UTF-8" ?><theDavidBox><request><arg0>send_key</arg0><arg1>source</arg1><arg2>flashlite</arg2><module>system</module></request><response></response><returnValue>0</returnValue></theDavidBox>

Not sure if that provides enough useful information, hope it helps.

[popcornmix]

That command does the same as pressing source, and brings up the browser/flash option. I still needed an "enter" to display the photo.
I believe this sequence will display the photo.

http://<popcorn IP>:8008/playback?arg0=start_pod&arg1=My-Test-Photo&arg2=http://jquery.com/demo/thickbox-3/images/plant1.jpg&arg3=1&arg4=rot0&arg5=bghide
http://<popcorn IP>:8008/system?arg0=send_key&arg2=source&arg3=flashlite
http://<popcorn IP>:8008/system?arg0=send_key&arg2=enter

It didn't work immediately from code - I probably need to poll first command until it is in playing mode. I also should check we're not already in flash mode...

---

(01-04-2011 02:26 PM)dc11ab Wrote:  I made a basic CSI package of the rev3.
...
Anyway; please test, I'll repackage if needed.
Temporary location: http://www.cerveras.es/feed/Airplay-nmt.zip
(Download, open CSI; menu -> File -> Install from file)

It doesn't seem to work. The bonjour service is running. The airplay-nmt app is running. iPhone can see the NMT. But no video plays. Not obvious what is wrong, I'll try looking a bit more tonight.

[dc11ab]

I didn't do much; stripped the binary and added the daemon.sh to invoke airplay.nmt (with the possible \001-issue). I'm sorry I can't be of much use testing it out :-(

I'll make third hacky attempt, using the original unstripped binary and wrapping the original launcher.

I hope the package framework can be of use once the quirk is ironed out.


As for the photo issue: if the polling trick doesnt work, perhaps the command service on port 30000 can be used as a workaround.

[popcornmix]

(01-04-2011 02:26 PM)dc11ab Wrote:  If anyone else wishes to maintains this package, remember to use the default /bin/tar cvf (...) on the NMT to create the CSI tar file.

That's annoying. I read it, but thought *my* tar will be just as good. It isn't!
Found a workaround. Use busybox (like the NMT). There's a win32 build here:
http://dl.dropbox.com/u/5943991/busybox-w32/busybox.exe

That allows me to package and upload in a script.

[dc11ab]

OK, my last attempt for CSI package: http://www.cerveras.es/feed/Airplay-nmt.zip
I have the unstripped airplay-nmt, and call the launch-airplay-nmt from the daemon-sh. I had to add the & to put the ./airplay-nmt in the background, and I think I stuck in another -b to the mDNSrespd, otherwise untouched. Found some typos in the daemon.sh which are corrected as well.

It starts both the bonjour service and airplay-nmt, but that's as far as I can see. Crossing fingers.

[popcornmix]

(01-05-2011 08:12 PM)dc11ab Wrote:  OK, my last attempt for CSI package: http://www.cerveras.es/feed/Airplay-nmt.zip

Thanks. Working now. The r4 download on googlecode is suitable for installing with CSI.

[dc11ab]

Made some minor tweaks (file `version' was empty, although that's for documentation/info purposes only, and there was some missing quotes in the appinfo.json and other really trivial stuff) and packaged the rev4 Airplay-nmt.zip CSI package:
http://www.cerveras.es/feed/Airplay-nmt.zip

But I can't test what I package, and that feels awkward, so this will be the last 'release' on my server. I hope I contributed with something useful so far.

[popcornmix]

(01-05-2011 10:24 PM)dc11ab Wrote:  But I can't test what I package, and that feels awkward, so this will be the last 'release' on my server. I hope I contributed with something useful so far.

Thanks. You've been very helpful. I will get it working with iTunes soon. Airflick would be another option if you have a Mac (or it gets ported elsewhere).

[-Coco-]

That's good news. Thanks to both of you!

[dc11ab]

(01-05-2011 11:03 PM)popcornmix Wrote:  Airflick would be another option if you have a Mac (or it gets ported elsewhere).

Hey, didn't know about Airflick, I shall give it a try on my Mac!