Compile and Install

To configure, compile and install mp4v2 library run the following script in the source directory.

Script:

#
# Compiling mp4v2
#

cd /usr/local/src/mp4v2
autoreconf -fiv
./configure
make
make install

To configure, compile and install vp8codec run the following script in the source directory.

Script:

#
# Compiling Speex
#

cd /usr/local/src/libvpx
./configure --enable-shared
make
make install

To configure, compile and install speex codec run the following script in the source directory.

Script:

#
# Compiling Speex
#

cd /usr/local/src/speex-1.2rc1
./configure
make
make install

To configure, compile and install speex codec run the following script in the source directory.

Script:

#
# Compiling Opus
#

cd /usr/local/src/opus-1.0.2
./configure
make
make install

To configure, compile and install latest libsrtp code run the following script in the source directory.

Script:

#
# Compiling libsrtp
#

cd /usr/local/src/libsrtp
./configure
make
make install

To suppoort VAD based positioning, some libraries from the Goolge WebRTC implementation are needed. To avoid having to download and compile all the required dependencies, we have cloned them into the ext directory.

Download and install prerequisites:

#
# Install depot_tools, you shall use an account different than root
#
svn co http://src.chromium.org/chrome/trunk/tools/depot_tools
export PATH="$PATH":/usr/local/src/depot_tools

Build required libraries

#
# Compile WebRTC VAD and signal processing libraries
#
cd /usr/local/src/medooze/mcu/ext
ninja -C out/Release/ common_audio

Go to the media mixer source directory /usr/local/src/medooze/mcu and edit config file config.mk as this:

#################################
# Config file
##################################
LOG             = yes
DEBUG           = no
STATIC          = no
VADWEBRTC       = no
WEBRTCINCLUDE   = /usr/local/src/webrtc/trunk/
WEBRTDIROBJ     = /usr/local/src/webrtc/trunk/out/Release/obj/webrtc
SRCDIR          = /usr/local/src/medooze/mcu
TARGET          = /usr/local

If you want to enable the VAD positioning you have to set the VADWEBRTC to yes.

And compile it:

#
# Compiling MCU Media Mixer Server 
#
cd /usr/local/src/medooze/mcu
make 

The binaries will be located at /usr/local/src/medooze/mcu/bin/release. Once installed, we will add a start script. Create a new mediamixer file under /etc/init.d and copy the following:

#! /bin/sh
### BEGIN INIT INFO
# Provides:          mcu
# Required-Start:    $local_fs $remote_fs
# Required-Stop:     $local_fs $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: MCU Videomixer
# Description:       Starts and stops mcu Video Mixer
### END INIT INFO

# Do NOT "set -e"

# Media Mixer installation directory
MCU="/usr/local/src/medooze/mcu/bin/debug"
# Username to run application server
USER="root"
# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="MCU Video Media Mixing Server"
DAEMON="${MCU}/mcu"
DAEMONPARAMS=""
SCRIPTNAME="mcu"

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

#
# Function that starts the daemon/service
#
do_start()
{
        echo -n "Starting $DESC:"
        cd $MCU && nohup $DAEMON $DAEMONPARAMS > /var/log/mcu 2>&1 &
        echo "Done"
}

#
# Function that stops the daemon/service
#
do_stop()
{
        echo -n "Stopping $DESC:"
        killall -9 mcu
        echo "Done"
}


case "$1" in
  start)
        do_start
        ;;
  stop)
        do_stop
        ;;
  restart|force-reload)
        echo -n "Restarting $DESC"
        do_stop
        do_start
        ;;
  *)
        echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload}" >&2
        exit 3
        ;;
esac

:

Let’s configure the service to start automatically at the desired runlevels and start the mixer in the default port:

chmod 777 /etc/init.d/mediamixer
/sbin/chkconfig --level 35 mediamixer on
service  mediamixer start