Python bindings for AllJoyn

Installation

First you need to install AllJoyn library. For the Debian Apt based distros (eg Raspbian on the RaspberyPI) install dependant packages using Debian package manager

apt-get install build-essential maven scons git curl openssl libssl-dev libjson0 libjson0-dev libcap-dev

Setup compile environment download AllJoyn code and compile it:

mkdir ~/bin
echo "export PATH=$PATH:~/bin" >> ~/.bashrc
curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
chmod a+x ~/bin/repo
source ~/.bashrc
mkdir -p ~/WORKING_DIRECTORY/alljoyn
cd ~/WORKING_DIRECTORY/alljoyn
git config --global user.name "Mark Gillespie"
git config --global user.email "[email protected]"
repo init -u https://git.allseenalliance.org/gerrit/devtools/manifest
repo sync
export AJ_ROOT=$(pwd)
sudo ln -s /usr/bin/g++ /usr/bin/arm-angstrom-linux-gnueabi-g++
sudo ln -s /usr/bin/gcc /usr/bin/arm-angstrom-linux-gnueabi-gcc
cd ~/WORKING_DIRECTORY/alljoyn/core/alljoyn
scons OS=linux CPU=arm WS=off OE_BASE=/usr BR=on BINDINGS=c,cpp CROSS_COMPILE=/usr/bin/arm-linux-gnueabihf-
sudo ln -sf ~/WORKING_DIRECTORY/alljoyn/core/alljoyn/build/linux/arm/debug/dist/cpp/lib/liballjoyn.so /lib/arm-linux-gnueabihf/liballjoyn.so
cd ~/WORKING_DIRECTORY/alljoyn/core/alljoyn/build/linux/arm/debug/dist/cpp/bin
ldd alljoyn-daemon #daemon not available in latest versions of alljoyn, use BR=on with scons for embedded daemon

Now test the AllJoyn Daemon:

cd ~/WORKING_DIRECTORY/alljoyn/core/alljoyn/build/linux/arm/debug/dist/cpp/bin
alljoyn-daemon --version

AllJoyn Message Bus Daemon version: v0.00.01 Copyright AllSeen Alliance.

Build: AllJoyn Library v0.00.01 (Built Fri Apr 15 18:12:18 UTC 2016 by root - Git: alljoyn branch: '(no branch)' tag: 'v15.09a' (+350 changes) commit ref: e289adde2cd7289afbbc09a64a4620d5679d2bdc)

Now you have to download and install my AllJoyn bindings

cd ~/WORKING_DIRECTORY
git clone https://github.com/glennpierce/alljoyn_python
cd alljoyn_python/
python ./setup.py install

The are some samples that can be used to test your AllPlay system.

Try running
cd alljoyn_python/
alljoyn-daemon &
./samples/AllPlay/AllPlayAboutClient.py

This should return information for the Allplay speakers we can see on the network.

Beets plugin

Before running any of the Python AllJoyn code the alljoyn-daemon must be running as
the internal AllJoyn router is not exported in the c api so I could not wrap it.

Within the samples is a beets plugin ./samples/beetsplug/
http://beets.io/ is a Python music indexer / metadata system.
My plugin sets up an angular web page to play music through the allplay system.

To run this plugin
Add the plugin directory to the Python path
ie  export PYTHONPATH="/opt/alljoyn_python/samples/"

Edit the beets config file

vim ~/.config/beets/config.yaml

Add the following

directory: ~/Music
library: ~/musiclibrary.blb

plugins: allplay

allplay:
    host: 0.0.0.0


Once the config is save you have to index your music

For importing read https://beets.readthedocs.org/en/v1.3.17/guides/main.html

I used
beet import -A /media/External/Music

Once index simply run my plugin

beet allplay --debug

This will start a webserver you can access on port 8337

Todo

Port unit tests from c bindings

Port build to scons for integration into upstream alljoyn

Add a generic Set and Get to MsgArg that automatically converts the DBus signatures to Python types