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77 lines
2.3 KiB
77 lines
2.3 KiB
#!/bin/bash |
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# |
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# Copyright (C) 2019, Maxim Lihachev, <envrm@yandex.ru> |
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# |
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# This program is free software: you can redistribute it and/or modify it |
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# under the terms of the GNU General Public License as published by the Free |
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# Software Foundation, version 3. |
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# |
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# This program is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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# more details. |
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# |
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# You should have received a copy of the GNU General Public License along with |
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# this program. If not, see <https://www.gnu.org/licenses/>. |
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# |
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# |
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# Получение информации и аудиопотока в сети Axia Livewire |
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# |
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# Пример обработки полученных данных при помощи ffmpeg: |
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# |
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# | ffmpeg -ac 2 -ar 48000 -f s24be -i pipe:0 |
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# |
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# Сценарий принимает адрес Axia Livewire в формате IP/Channel, |
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# при этом IP-адрес может отсутствовать |
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if [ $# -ne 2 ]; then |
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echo "USAGE: $0 [--info|--dump] <IP/Channel>" |
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exit 1 |
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fi |
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# Перевод чисел в 16-ричную систему счисления |
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hex() { |
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printf '%02X' "$@" |
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} |
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# Программа |
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PROGRAMME="$2" |
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# IP-адрес Axia Livewire. |
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IP="$(echo $PROGRAMME | grep -o '.*\/' | tr '/' ' ')" |
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# По умолчанию используется базовый адрес 239.192.0.0 |
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ADDRESS="${IP:-239.192.0.0}" |
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# Канал |
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CHANNEL="${PROGRAMME/*\/}" |
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# Команда получения сигнала в сети Axia Livewire |
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CMD="rtpdump -F payload" |
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BROADCAST="0x$(hex $[0x$(hex ${ADDRESS//./ })+$CHANNEL])/5004" |
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HEXADDR="$(hex $[0x$(hex ${ADDRESS//./ })+$CHANNEL])" |
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IPADDR=$(printf "%d." $( |
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echo $HEXADDR | sed 's/../0x& /g' | tr ' ' '\n' |
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) | sed 's/\.$/\n/') |
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################# |
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if [ "$1" == "--info" ]; then |
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# Информация об источнике |
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echo "Axia Livewire :: IP: $IPADDR, SOURCE: $CHANNEL, BROADCAST: $BROADCAST" |
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else |
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# Прекращение работы, если нет последующего конвеера, |
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# т.к. выводить дамп аудиопотока в stdout не имеет смысла. |
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if [ -t 1 ]; then |
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echo "A pipe (f.e. to ffmpeg) isn't exists. Terminated." |
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exit 1 |
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else |
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# Дамп |
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$CMD $BROADCAST |
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fi |
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fi |
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