create aircox_streamer as separate application

aircox_streamer/templates/aircox_streamer/scripts/station.liq

@@ -0,0 +1,130 @@
+{% comment %}
+Base liquidsoap station configuration.
+
+
+[stream] +--> streams ---+---> station
+                         |
+              dealer  ---'
+
+{% endcomment %}
+
+{% block functions %}
+{# Seek function #}
+def seek(source, t) =
+  t = float_of_string(default=0.,t)
+  ret = source.seek(source,t)
+  log("seek #{ret} seconds.")
+  "#{ret}"
+end
+
+{# Transition to live sources #}
+def to_live(stream, live)
+  stream = fade.final(duration=2., type='log', stream)
+  live = fade.initial(duration=2., type='log', live)
+  add(normalize=false, [stream,live])
+end
+
+{# Transition to stream sources #}
+def to_stream(live, stream)
+  source.skip(stream)
+  add(normalize=false, [live,stream])
+end
+
+
+{% comment %}
+An interactive source is a source that:
+- is skippable through the given id on external interfaces
+- is seekable through the given id and amount of seconds on e.i.
+- store metadata
+{% endcomment %}
+def interactive (id, s) =
+    server.register(namespace=id,
+                    description="Seek to a relative position",
+                    usage="seek <duration>",
+                    "seek", fun (x) ->  begin seek(s, x) end)
+    server.register(namespace=id,
+                    description="Get source's track remaining time",
+                    usage="remaining",
+                    "remaining", fun (_) ->  begin json_of(source.remaining(s)) end)
+
+    s = store_metadata(id=id, size=1, s)
+    add_skip_command(s)
+    s
+end
+
+{% comment %}
+A stream is an interactive playlist
+{% endcomment %}
+def stream (id, file) =
+    s = playlist(mode = "random", reload_mode='watch', file)
+    interactive(id, s)
+end
+{% endblock %}
+
+
+{% block config %}
+set("server.socket", true)
+set("server.socket.path", "{{ streamer.socket_path }}")
+set("log.file.path", "{{ station.path }}/liquidsoap.log")
+{% for key, value in settings.AIRCOX_LIQUIDSOAP_SET.items %}
+set("{{ key|safe }}", {{ value|safe }})
+{% endfor %}
+{% endblock %}
+
+{% block config_extras %}
+{% endblock %}
+
+
+{% block sources %}
+{% with source=streamer.dealer %}
+live = interactive('{{ source.id }}',
+    request.queue(id="{{ source.id }}_queue")
+)
+{% endwith %}
+
+
+streams = rotate(id="streams", [
+    {% for source in streamer.sources %}
+    {% if source != streamer.dealer %}
+    {% with stream=source.stream %}
+        {% if stream.delay %}
+        delay({{ stream.delay }}.,
+              stream("{{ source.id }}", "{{ source.path }}")),
+        {% elif stream.begin and stream.end %}
+        at({ {{stream.begin}}-{{stream.end}} },
+           stream("{{ source.id }}", "{{ source.path }}")),
+        {% else %}
+        stream("{{ source.id }}", "{{ source.path }}"),
+        {% endif %}
+    {% endwith %}
+    {% endif %}
+    {% endfor %}
+])
+
+{% endblock %}
+
+
+{% block station %}
+{{ streamer.id }} = interactive (
+    "{{ streamer.id }}",
+    fallback([
+        live,
+        streams,
+        blank(id="blank", duration=0.1)
+    ], track_sensitive=false, transitions=[to_live,to_stream])
+)
+{% endblock %}
+
+
+{% block outputs %}
+{% for output in streamer.outputs %}
+output.{{ output.get_type_display }}(
+    {% if output.settings %}
+    {{ output.settings|safe }},
+    {% endif %}
+    {{ streamer.id }}
+)
+{% endfor %}
+{% endblock %}
+
+