From 02ec06495725fc351011831bc28117487db05ccd Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Sun, 24 Feb 2019 23:33:03 +0100
Subject: added dolmetsch rtp send/receive scripts

---
 roles/elevate/dolmetsch-raspi/tasks/main.yml           | 18 ++++++++++++++++++
 .../dolmetsch-raspi/templates/rtp-recv.service.j2      | 18 ++++++++++++++++++
 roles/elevate/dolmetsch-raspi/templates/rtp-recv.sh.j2 | 14 ++++++++++++++
 .../dolmetsch-raspi/templates/rtp-send.service.j2      | 18 ++++++++++++++++++
 roles/elevate/dolmetsch-raspi/templates/rtp-send.sh.j2 | 14 ++++++++++++++
 5 files changed, 82 insertions(+)
 create mode 100644 roles/elevate/dolmetsch-raspi/templates/rtp-recv.service.j2
 create mode 100644 roles/elevate/dolmetsch-raspi/templates/rtp-recv.sh.j2
 create mode 100644 roles/elevate/dolmetsch-raspi/templates/rtp-send.service.j2
 create mode 100644 roles/elevate/dolmetsch-raspi/templates/rtp-send.sh.j2

diff --git a/roles/elevate/dolmetsch-raspi/tasks/main.yml b/roles/elevate/dolmetsch-raspi/tasks/main.yml
index c98b0ff4..e0e1083c 100644
--- a/roles/elevate/dolmetsch-raspi/tasks/main.yml
+++ b/roles/elevate/dolmetsch-raspi/tasks/main.yml
@@ -61,3 +61,21 @@
     src: "{{ item }}.service.j2"
     dest: "/etc/systemd/system/{{ item }}.service"
   notify: reload systemd
+
+- name: install rtp send/receive scripts
+  with_items:
+    - rtp-recv
+    - rtp-send
+  template:
+    src: "{{ item }}.sh.j2"
+    dest: "/usr/local/bin/{{ item }}.sh"
+    mode: 0750
+
+- name: install rtp send/receive systemd units
+  with_items:
+    - rtp-recv
+    - rtp-send
+  template:
+    src: "{{ item }}.service.j2"
+    dest: "/etc/systemd/system/{{ item }}.service"
+  notify: reload systemd
diff --git a/roles/elevate/dolmetsch-raspi/templates/rtp-recv.service.j2 b/roles/elevate/dolmetsch-raspi/templates/rtp-recv.service.j2
new file mode 100644
index 00000000..4f7cf889
--- /dev/null
+++ b/roles/elevate/dolmetsch-raspi/templates/rtp-recv.service.j2
@@ -0,0 +1,18 @@
+[Unit]
+Description=RTP Receiver
+
+[Service]
+{# TODO: remove hardcoded IP #}
+ExecStart=/usr/local/bin/rtp-recv.sh 192.168.48.103
+CapabilityBoundingSet=CAP_NET_BIND_SERVICE
+NoNewPrivileges=yes
+PrivateTmp=yes
+ProtectSystem=strict
+ProtectHome=yes
+ProtectKernelTunables=yes
+ProtectControlGroups=yes
+RestrictRealtime=yes
+RestrictAddressFamilies=AF_INET AF_INET6
+
+[Install]
+WantedBy=multi-user.target
diff --git a/roles/elevate/dolmetsch-raspi/templates/rtp-recv.sh.j2 b/roles/elevate/dolmetsch-raspi/templates/rtp-recv.sh.j2
new file mode 100644
index 00000000..c9a89f95
--- /dev/null
+++ b/roles/elevate/dolmetsch-raspi/templates/rtp-recv.sh.j2
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+HOST="$1"
+if [ -z "$HOST" ]; then
+  echo "usage: $0 <remote-host>"
+  exit 1
+fi
+
+#export GST_DEBUG=3
+exec gst-launch-1.0 rtpbin name=rtpbin latency=50 \
+       udpsrc port=5000 caps="application/x-rtp,media=(string)audio,encoding-name=(string)OPUS,clock-rate=(int)48000" ! rtpbin.recv_rtp_sink_0 \
+         rtpbin. ! rtpopusdepay ! opusdec ! alsasink \
+       udpsrc port=5001 ! rtpbin.recv_rtcp_sink_0 \
+       rtpbin.send_rtcp_src_0 ! udpsink "host=$HOST" port=5001 sync=false async=false
diff --git a/roles/elevate/dolmetsch-raspi/templates/rtp-send.service.j2 b/roles/elevate/dolmetsch-raspi/templates/rtp-send.service.j2
new file mode 100644
index 00000000..47903afd
--- /dev/null
+++ b/roles/elevate/dolmetsch-raspi/templates/rtp-send.service.j2
@@ -0,0 +1,18 @@
+[Unit]
+Description=RTP Sender
+
+[Service]
+{# TODO: remove hardcoded IP #}
+ExecStart=/usr/local/bin/rtp-send.sh 192.168.48.102
+CapabilityBoundingSet=CAP_NET_BIND_SERVICE
+NoNewPrivileges=yes
+PrivateTmp=yes
+ProtectSystem=strict
+ProtectHome=yes
+ProtectKernelTunables=yes
+ProtectControlGroups=yes
+RestrictRealtime=yes
+RestrictAddressFamilies=AF_INET AF_INET6
+
+[Install]
+WantedBy=multi-user.target
diff --git a/roles/elevate/dolmetsch-raspi/templates/rtp-send.sh.j2 b/roles/elevate/dolmetsch-raspi/templates/rtp-send.sh.j2
new file mode 100644
index 00000000..9754b620
--- /dev/null
+++ b/roles/elevate/dolmetsch-raspi/templates/rtp-send.sh.j2
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+HOST="$1"
+if [ -z "$HOST" ]; then
+  echo "usage: $0 <remote-host>"
+  exit 1
+fi
+
+#export GST_DEBUG=3
+exec gst-launch-1.0 rtpbin name=rtpbin \
+       alsasrc device=hw:CODEC ! 'audio/x-raw,rate=48000,channels=1' ! opusenc ! rtpopuspay ! rtpbin.send_rtp_sink_0 \
+         rtpbin.send_rtp_src_0 ! udpsink "host=$HOST" port=5000 \
+         rtpbin.send_rtcp_src_0 ! udpsink "host=$HOST" port=5001 sync=false async=false \
+         udpsrc port=5001 ! rtpbin.recv_rtcp_sink_0
-- 
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