Comment changer le puits de pulseaudio avec "pacmd set-default-sink" pendant la lecture ?

DES ÉVIERS DE TYPE "CIRCLE-TOGGLE".

Le Gaco script avec juste une ligne de plus pour faire le tour des éviers disponibles.

#!/bin/bash 

new_sink=$(pacmd list-sinks | grep index | tee /dev/stdout | grep -m1 -A1 "* index" | tail -1 | cut -c12-)

echo "Setting default sink to: $new_sink";
pacmd set-default-sink $new_sink
pacmd list-sink-inputs | grep index | while read line
do
echo "Moving input: ";
echo $line | cut -f2 -d' ';
echo "to sink: $new_sink";
pacmd move-sink-input `echo $line | cut -f2 -d' '` $new_sink

done

Il y a un ruby script (que j'ai originellement fourché et dont j'ai réécrit des sections) qui vous permet de changer les puits par défaut, le volume et l'état de la sourdine à partir de la ligne de commande.

Et voici un script qui basculera également entre les éviers :

http://marginalhacks.com/index.0.html#pulse-switch-out

Voici le script ci-dessous :

#!/usr/bin/ruby
# Filename: pulse-switch-out
# Author:   David Ljung Madison <DaveSource.com>
# See License:  http://MarginalHacks.com/License/
# Description:  Switch pulse audio output (sink) using pacmd

PACMD = %w(pacmd)

##################################################
# Usage
##################################################
def fatal(*msg)
    msg.each { |m| $stderr.puts "[#{$0.sub(/.*\//,'')}] ERROR: #{m}" }
    exit(-1);
end

def usage(*msg)
    msg.each { |m| $stderr.puts "ERROR: #{m}" }
    $stderr.puts <<-USAGE

Usage:  #{$0.sub(/.*\//,'')} [sink]
  Switch sound playback device for ALSA/pulseaudio

    [sink]   Specify sink number to use (see 'pacmd list-sinks')

    USAGE
    exit -1;
end

def parseArgs
    opt = Hash.new
    loop {
        if (arg=ARGV.shift)==nil then break
        elsif arg == '-h' then usage
        elsif arg == '-?' then usage
        #elsif arg == '-arg' then opt[:arg] = true
        elsif arg =~ /^(\d)$/ then opt[:sink] = arg.to_i
        else
            usage("Unknown arg [#{arg}]")
        end
    }

    opt
end

# Unfortunately you can't return or break from the yield without leaving
# the pipe open, maybe use some sort of ensure and figure out how to close?
def pipe(cmd)
        # This is leaving files open
    #IO.popen(cmd.join(' ')).each { |l|
    a = `#{cmd.join(' ')}`
    ret = $?
    a.split("\n").each { |l|
        yield l
    }
    $?
end

def getSinks(ins=false)
    cmd = PACMD.dup
    cmd.push(ins ? 'list-sink-inputs' : 'list-sinks')
    curr = nil
    sinks = Array.new
    pipe(cmd) { |l|
        next unless l=~/\s*(\*)?\s*index:\s+(\d+)/
        i = $2.to_i
        sinks.push(i)
        curr = i if $1
    }
    return sinks,curr
end

##################################################
# Main code
##################################################
def main
    opt = parseArgs

    sinks,curr = getSinks

    usage("No sinks found?") if sinks.empty?
    usage("Only one sink found") if sinks.size==1

    if opt[:sink]
        usage("Unknown sink [#{opt[:sink]}] (out of #{sinks.join(' ')})") unless sinks.index(opt[:sink])
    else
        # Find next sink after curr
        opt[:sink] = sinks[0]
        sinks.each { |s|
            next unless s>curr
            opt[:sink] = s
            break
        }
    end

    # Set default sink
## For some reason this doesn't change the behavior of new apps.
    puts "Set sink: #{opt[:sink]}"
    system("#{PACMD} set-default-sink #{opt[:sink]} > /dev/null")
    usage("Couldn't set default sink [#{opt[:sink]}]") unless $?==0

    # And move all sink-inputs to the new sink
    ins,ignore = getSinks(true)
    ins.each { |i|
        puts "Move playback #{i} to sink #{opt[:sink]}"
        system("#{PACMD} move-sink-input #{i} #{opt[:sink]} > /dev/null")
        usage("Couldn't move playback #{i} to sink [#{opt[:sink]}]") unless $?==0
    }
end
main

J'ai adapté @mpapis à un simple "toggle sink0 or sink1" lors de l'exécution :

#!/bin/bash
SINK_INDEX1=0
SINK_INDEX2=1
ACTIVE_SINK=$(pacmd list-sinks | grep '* index:' | grep -o '[0-9]*')
if [ "$ACTIVE_SINK" = $SINK_INDEX1 ] ; then
    pacmd set-default-sink $SINK_INDEX2
    pacmd list-sink-inputs | awk '/index:/{print $2}' | xargs -r -I{} pacmd move-sink-input {} $SINK_INDEX2
else 
    pacmd set-default-sink $SINK_INDEX1
    pacmd list-sink-inputs | awk '/index:/{print $2}' | xargs -r -I{} pacmd move-sink-input {} $SINK_INDEX1
fi

Je pense qu'il y a une autre option qui vaut la peine d'être mentionnée et elle est disponible sur la page officielle de la Commission européenne. FAQ sur PulseAudio à l'adresse freedesktop.org . Sous le titre suivant :

Comment puis-je changer la carte son par défaut, en déplaçant toutes les applications ?

Ils fournissent le script suivant pour le faire :

#/bin/bash
# paswitch 2011-02-02 by Ng Oon-Ee <ngoonee@gmail.com>
# I can't remember where I found this script, can't locate the original author.
# Please inform me if you know, so that I can give proper attribution.
# CHANGES: Added auto-move all inputs to new default sound card.
# WAS: Pulse Audio Sound Card Switcher v1.0 2010-01-13
#   Switches between soundcards when run. All streams are moved to the new default sound-card.

# $totalsc: Number of sound cards available
totalsc=$(pacmd "list-sinks" | grep card: | wc -l) # total of sound cards: $totalsc
if [ $totalsc -le 1 ]; then # Check whether there are actually multiple cards available
  notify-send -u critical -t 5000 "Nothing to switch, system only has one sound card."
  exit
fi
# $scindex: The Pulseaudio index of the current default sound card
scindex=$(pacmd list-sinks | awk '$1 == "*" && $2 == "index:" {print $3}')
# $cards: A list of card Pulseaudio indexes
cards=$(pacmd list-sinks | sed 's|*||' | awk '$1 == "index:" {print $2}')
PICKNEXTCARD=1 # Is true when the previous card is default
count=0 # count of number of iterations
for CARD in $cards; do
  if [ $PICKNEXTCARD == 1 ]; then
# $nextsc: The pulseaudio index of the next sound card (to be switched to)
    nextsc=$CARD
    PICKNEXTCARD=0
# $nextind: The numerical index (1 to totalsc) of the next card
    nextind=$count
  fi
  if [ $CARD == $scindex ]; then # Choose the next card as default
    PICKNEXTCARD=1
  fi
  count=$((count+1))
done
pacmd "set-default-sink $nextsc" # switch default sound card to next

# $inputs: A list of currently playing inputs
inputs=$(pacmd list-sink-inputs | awk '$1 == "index:" {print $2}')
for INPUT in $inputs; do # Move all current inputs to the new default sound card
  pacmd move-sink-input $INPUT $nextsc
done
# $nextscdec: The device.description of the new default sound card
# NOTE: This is the most likely thing to break in future, the awk lines may need playing around with
nextscdesc=$(pacmd list-sinks | awk '$1 == "device.description" {print substr($0,5+length($1 $2))}' \
                         | sed 's|"||g' | awk -F"," 'NR==v1{print$0}' v1=$((nextind+1)))
notify-send "Default sound-card changed to $nextscdesc"
exit
# Below text was from original author and remains unaltered
# CC BY - creative commons
# Thanks God for help :) and guys lhunath, geirha, Tramp and others from irc #bash on freenode.net