Kindle paperwhite audio support.

[SKK]

I am wondering if it would be possible to make a kual extension that would play mp3's using amazon's audio adapter.

[geekmaster]

Originally Posted by SKK

I am wondering if it would be possible to make a kual extension that would play mp3's using amazon's audio adapter.

Yes, certainly. Twobob's Balsamic demo played sound and video using a tweaked version of my gmplay, and it worked for about 20 seconds on my PW3 with cheap USB sound dongle befor segfaulting (using a KUAL extension, in fact). Debugging is in on yhe menu, and MP3 decoding, or use whatever built-in apps (or borrow from an earlier kindle model) than can already play mp3s.

It may not be hard to build open source players from source either with a good toolchain.

But Balsmic proves it can work.

[SKK]

Originally Posted by geekmaster

Yes, certainly. Twobob's Balsamic demo played sound and video using a tweaked version of my gmplay, and it worked for about 20 seconds on my PW3 with cheap USB sound dongle befor segfaulting (using a KUAL extension, in fact). Debugging is in on yhe menu, and MP3 decoding, or use whatever built-in apps (or borrow from an earlier kindle model) than can already play mp3s.

It may not be hard to build open source players from source either with a good toolchain.

But Balsmic proves it can work.

So is there a extension or does it have to be made.

[knc1]

Originally Posted by SKK

So is there a extension or does it have to be made.

Have you searched posts authored by twobob yet?

[geekmaster]

Originally Posted by knc1

Have you searched posts authored by twobob yet?

I wrote my own extension for Balsamic and several of my eink demos, plus my video player with a menu for various videos. Easy to grab an existing extension and tweak it.

I will post a shortened version of my gmdemo extension here. I only tested this on my PW3. The PW2 needs a usbotg kernel module support that amazon does not provide, though we should be able to add what is missing (with compatible kernel vermagic).

extensions/gmdemo/config.xml:

PHP Code:

<?xml version="1.0" encoding="UTF-8"?>
<extension>
  <information>
    <name>Geekmaster Video</name>
    <version>1.5a</version>
    <author>geekmaster</author>
    <id>gmvid</id>
  </information>
  <menus>
    <menu type="json" dynamic="true">menu.json</menu>
  </menus>
</extension>

extensions/gmdemo/menu.json:

PHP Code:

{
  "items": [
    {
      "name": "Geekmaster Demos",
      "priority": 0,
      "items": [
        {"name": "Balsamic: twobob audio/video demo", "priority": 1, "action": "bin/gmdemo.sh", "params": "Balsamic noise.wav"},
        {"name": "titty: geekmaster tiny tty demo", "priority": 1, "action": "bin/gmdemo.sh", "params": "titty"}
      ]
    }
  ]
} 


extensions/gmdemo/bin/gmdemo.sh:

PHP Code:

#!/bin/sh
lipc-set-prop com.lab126.powerd preventScreenSaver 1
killall -stop Xorg cvm # pause framework
eips -c
pause 1

bin/$@

killall -cont cvm Xorg # resume framework
lipc-set-prop com.lab126.powerd preventScreenSaver 0

return 0 


Demo files from eink algorithmic art thread:

extensions/gmdemo/noise.wav
extensions/gmdemo/bin/Balsamic
extensions/gmdemo/bin/titty
extensions/gmdemo/bin/titty.png

Beware that Balsamic blows up after playing the audio tune (with eink animation) for awhile. It works fine on earlier kindles with sound. Not sure how to fix that yet.

[knc1]

bin/$@

[geekmaster]

Originally Posted by knc1

bin/$@

That was just a copy/paste of a legacy-ish script (with non-working demos removed).

I used $@ in newer scripts. I think I learned it from you not that long ago, in fact...

The problem with copy/paste is old inefficiencies have a habit of creeping into new code, depending on the source.

Post updated. Thanks.

[SKK]

Originally Posted by geekmaster

That was just a copy/paste of a legacy-ish script (with non-working demos removed).

I used $@ in newer scripts. I think I learned it from you not that long ago, in fact...

The problem with copy/paste is old inefficiencies have a habit of creeping into new code, depending on the source.

Post updated. Thanks.

Thanks for your help.