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pd:purrneo

script purrr des pieds à la tête

cas debian stretch sur noyau 4

cd /usr/src  #ou on veut...

## install dependances
echo 'flex automake tcl8.5-dev tk8.5-dev tcl-dev tk-dev libtool tkpng tclxapian bison fakeroot libnss3 libgconf2-4 python-tk byacc subversion git python-dev libasound2-dev libjack-jackd2-dev libasound2-plugins qjackctl libfftw3-dev libvorbis-dev libbluetooth-dev ubuntustudio-audio-plugins libmp3lame-dev libspeex-dev libgsl0-dev portaudio19-dev libgl1-mesa-dev  libglu1-mesa-dev libglew-dev libmagick++-dev libftgl-dev libgmerlin-dev libgmerlin-avdec-dev libavifile-0.7-dev libmpeg3-dev libquicktime-dev libv4l-dev libraw1394-dev libdc1394-22-dev ladspa-sdk dssi-dev tap-plugins ladspa-foo-plugins invada-studio-plugins-ladspa blepvco swh-plugins mcp-plugins cmt blop slv2-jack omins rev-plugins libslv2-dev dssi-utils vco-plugins wah-plugins fil-plugins mda-lv2 libsmpeg0 libjpeg62 flite1-dev libgsm1-dev libgtk2.0-dev libstk0-dev libsndobj-dev libfluidsynth-dev fluid-soundfont-gm zita-njbridge' > dep
for i in `cat dep`
do
apt install -y $i
done

## install partie gpio
cd /usr/src
##git clone https://github.com/friendlyarm/WiringNP # ne connait plus la NEO???
wget http://bricoles.du-libre.org/lib/exe/fetch.php?media=pd:wiringnp.tar.gz
mv fetch*wiringnp.tar.gz wiringnp.tar.gz
tar xvf wiringnp.tar.gz
cd WiringNP
./build clean
./build static

# purrr
cd /usr/src
git clone https://git.purrdata.net/jwilkes/purr-data.git
cd purr-data/l2ork_addons/raspberry_pi/disis_gpio
mv wiringPi wiringPi.PI
cp -a /usr/src/WiringNP wiringPi

#ajout -fPIC pour nos ARM
cd /usr/src/purr-data/l2ork_addons/raspberry_pi
sed -i ./makefile.include -e "s/LINUXCFLAGS = -DPD -O2 /LINUXCFLAGS = -DPD -O2 -fPIC /"
# modif dependance rsp
cd /usr/src/purr-data
sed -i packages/linux_make/debian/control.raspbian -e "s/libgsl0ldbl\,/libgsl0ldbl\| libgsl2\,/"
cd /usr/src/purr-data/l2ork_addons
./tar_em_up.sh -R

# pb avec Gem et pkgconfig a resoudre (ln -s /usr/bin/pkg-config /usr/bin/pkgconfig ...
#dans /usr/src/purr-data/packages/linux_make/Makefile , mettre en commentaire ? pkgconfig ?
#       -mv -f $(DESTDIR)$(libpddir)/../pkgconfig $(DESTDIR)$(libpddir)/

# quand tout est ok on devrait avoir un pd...deb dans /usr/src/purr-data/packages/linux_make sinon

cd /usr/src/purr-data/packages/linux_make/build/
tar cvfz ../purr-v-2.4.3-A.tgz ./*  # choisir le nom de l'archive... car il semble que le .deb ne se fasse pas

# pour l'installation
cd /
tar xvf /usr/src/purr-data/packages/linux_make/purr-v-2.4.3-A.tgz

ouverture du mixer audio et des entrée uart,i2c etc

Dans le cas noyau 4 mettre dans le fichier /boot/armbianEnv.txt

armbianEnv.txt 
verbosity=1
logo=disabled
console=both
disp_mode=1920x1080p60
overlay_prefix=sun8i-h3
overlays=usbhost1 usbhost2 analog-codec i2c0 pps-gpio spi-spidev uart1 uart2
rootdev=UUID=a9473195-8c3d-4340-99fa-36e07f900eda
rootfstype=ext4
usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u

rebooter pour la prise en compte

apt install fluxbox xterm tightvncserver xfonts-base x11-xserver-utils
su pi 
vncpasswd
vncserver #  une fois pour pouvoir fixer le fichier .vnc/xstartup

Patch et objets Purr

l'idée étant d'avoir des machines qui envoient du pâté en streaming vers une machine qui héberge icecast2 et des machines qui reçoivent la sauce pour en faire des choses. il y a au moins une machine de réception avec icecast qui peut etre celle de commande d'interfaces, moteur etc .. ou de production de son.

Il pourrait y avoir un gestionnaire genre webradio du style https://www.sourcefabric.org/en/airtime/ ou liquisoap avec des entrées/sorties vers Internet possibles…

Un qui fonctionne ffmpeg

  1. : modprobe snd-aloop pcm_substreams=2
  2. : .asoundrc
    # .asoundrc
    pcm.multi {
        type route;
        slave.pcm {
            type multi;
            slaves.a.pcm "output"; # ou slaves.a.pcm "loopout";
            slaves.b.pcm "loopin";
            slaves.a.channels 2;
            slaves.b.channels 2;
            bindings.0.slave a;
            bindings.0.channel 0;
            bindings.1.slave a;
            bindings.1.channel 1;
            bindings.2.slave b;
            bindings.2.channel 0;
            bindings.3.slave b;
            bindings.3.channel 1;
        }
    
        ttable.0.0 1;
        ttable.1.1 1;
        ttable.0.2 1;
        ttable.1.3 1;
    }
    
    pcm.!default {
        type plug
        slave.pcm "multi"
    }
    
    ctl.!default {
        type hw
        card 0
    } 
    
    pcm.output {
        type hw
        card 0
        rate 44100
        periods 128
        period_time 0
        period_size 1024 # must be power of 2
        buffer_size 8192
    }
    pcm.loopin {
        type plug
        rate 44100
        periods 128
        period_time 0
        period_size 1024 # must be power of 2
        buffer_size 8192
    
        slave.pcm "hw:Loopback,0,0"
    }
    pcm.loopout {
        type plug
        rate 44100
        periods 128
        period_time 0
        period_size 1024 # must be power of 2
        buffer_size 8192
        slave.pcm "hw:Loopback,1,0"
    }

asound.tgz

apt install ffmpeg

avec serveur , ici local

  1. ffserver -f ffserver.conf # avec server.conf
  2. ffmpeg -f alsa -ac 2 -i hw:Loopback,1,0 -acodec mp2 -b:a 128k http://localhost:8090/feed1.ffm

server.conf:

# Port on which the server is listening. You must select a different
# port from your standard HTTP web server if it is running on the same
# computer.
HTTPPort 8090

# Address on which the server is bound. Only useful if you have
# several network interfaces.
HTTPBindAddress 0.0.0.0

# Number of simultaneous HTTP connections that can be handled. It has
# to be defined *before* the MaxClients parameter, since it defines the
# MaxClients maximum limit.
MaxHTTPConnections 200

# Number of simultaneous requests that can be handled. Since FFServer
# is very fast, it is more likely that you will want to leave this high
# and use MaxBandwidth, below.
MaxClients 100

# This the maximum amount of kbit/sec that you are prepared to
# consume when streaming to clients.
MaxBandwidth 1000

# Access log file (uses standard Apache log file format)
# '-' is the standard output.
CustomLog -

# Suppress that if you want to launch ffserver as a daemon.
#NoDaemon
##################################################################
# Definition of the live feeds. Each live feed contains one video
# and/or audio sequence coming from an ffmpeg encoder or another
# ffserver. This sequence may be encoded simultaneously with several
# codecs at several resolutions.

<Feed feed1.ffm>
# You must use 'ffmpeg' to send a live feed to ffserver. In this
# example, you can type:
#
# ffmpeg http://localhost:8090/feed1.ffm

# ffserver can also do time shifting. It means that it can stream any
# previously recorded live stream. The request should contain:
# "http://xxxx?date=[YYYY-MM-DDT][[HH:]MM:]SS[.m...]".You must specify
# a path where the feed is stored on disk. You also specify the
# maximum size of the feed, where zero means unlimited. Default:
# File=/tmp/feed_name.ffm FileMaxSize=5M
File /tmp/feed1.ffm
FileMaxSize 200K

# You could specify
# ReadOnlyFile /saved/specialvideo.ffm
# This marks the file as readonly and it will not be deleted or updated.

# Specify launch in order to start ffmpeg automatically.
# First ffmpeg must be defined with an appropriate path if needed,
# after that options can follow, but avoid adding the http:// field
#Launch ffmpeg

# Only allow connections from localhost to the feed.
#ACL allow 127.0.0.1

</Feed>
##################################################################
# Now you can define each stream which will be generated from the
# original audio and video stream. Each format has a filename (here
# 'test1.mpg'). FFServer will send this stream when answering a
# request containing this filename.
# MP3 audio
<Stream stream.mp3>
Feed feed1.ffm
Format mp2
AudioCodec libmp3lame
AudioBitRate 128
AudioChannels 2
AudioSampleRate 44100
NoVideo
</Stream>
# Ogg Vorbis audio
#<Stream test.ogg>
#Feed feed1.ffm
#Format ogg
#AudioCodec libvorbis
#Title "Stream title"
#AudioBitRate 64
#AudioChannels 2
#AudioSampleRate 44100
#NoVideo
#</Stream>

##################################################################
# Special streams

# Server status

<Stream stat.html>
Format status

# Only allow local people to get the status
ACL allow localhost
ACL allow 192.168.2.0 192.168.2.255

#FaviconURL http://pond1.gladstonefamily.net:8080/favicon.ico
</Stream>
# Redirect index.html to the appropriate site
<Redirect index.html>
URL http://www.ffmpeg.org/
</Redirect>

directe sans serveur (mais sans trop de gain en ressource):

  1. fmpeg -f alsa -ac 2 -i hw:Loopback,1,0 -acodec libmp3lame -b 128k -f rtp rtp:clientip:6000 - sur le client - avec mplayer stream.sdp - faire un fchier texte stream.sdp <code> o=- 0 0 IN IP4 clientip c=IN IP4 clientip m=audio 6000 RTP/AVP 14 </code> acces par fluxbox, pensez vncpasswd et vncserver <code> apt install fluxbox xterm tightvncserver xfonts-base x11-xserver-utils </code>
pd/purrneo.txt · Dernière modification: 2017/12/15 14:41 par gepeto