refactor(playout): merge liquidsoap modules

playout/libretime_playout/player/liquidsoap.py

@@ -6,11 +6,124 @@ from typing import Dict, List, Optional, Set
 from ..liquidsoap.client import LiquidsoapClient
 from ..utils import seconds_between
 from .events import ActionEvent, AnyEvent, EventKind, FileEvent, WebStreamEvent
-from .liquidsoap_gateway import TelnetLiquidsoap
 
 logger = logging.getLogger(__name__)
 
 
+def create_liquidsoap_annotation(file_event: FileEvent) -> str:
+    # We need liq_start_next value in the annotate. That is the value that controls
+    # overlap duration of crossfade.
+    annotations = {
+        "media_id": file_event.id,
+        "schedule_table_id": file_event.row_id,
+        "liq_start_next": "0",
+        "liq_fade_in": file_event.fade_in / 1000,
+        "liq_fade_out": file_event.fade_out / 1000,
+        "liq_cue_in": file_event.cue_in,
+        "liq_cue_out": file_event.cue_out,
+    }
+
+    if file_event.replay_gain is not None:
+        annotations["replay_gain"] = f"{file_event.replay_gain} dB"
+
+    # Override the the artist/title that Liquidsoap extracts from a file's metadata with
+    # the metadata we get from Airtime. (You can modify metadata in Airtime's library,
+    # which doesn't get saved back to the file.)
+    if file_event.artist_name:
+        annotations["artist"] = file_event.artist_name.replace('"', '\\"')
+
+    if file_event.track_title:
+        annotations["title"] = file_event.track_title.replace('"', '\\"')
+
+    annotations_str = ",".join(f'{key}="{value}"' for key, value in annotations.items())
+
+    return "annotate:" + annotations_str + ":" + str(file_event.local_filepath)
+
+
+class TelnetLiquidsoap:
+    current_prebuffering_stream_id: Optional[int] = None
+
+    def __init__(
+        self,
+        liq_client: LiquidsoapClient,
+        queues: List[int],
+    ):
+        self.liq_client = liq_client
+        self.queues = queues
+
+    def queue_clear_all(self):
+        try:
+            self.liq_client.queues_remove(*self.queues)
+        except OSError as exception:
+            logger.exception(exception)
+
+    def queue_remove(self, queue_id: int):
+        try:
+            self.liq_client.queues_remove(queue_id)
+        except OSError as exception:
+            logger.exception(exception)
+
+    def queue_push(self, queue_id: int, file_event: FileEvent):
+        try:
+            annotation = create_liquidsoap_annotation(file_event)
+            self.liq_client.queue_push(queue_id, annotation, file_event.show_name)
+        except OSError as exception:
+            logger.exception(exception)
+
+    def stop_web_stream_buffer(self):
+        try:
+            self.liq_client.web_stream_stop_buffer()
+        except OSError as exception:
+            logger.exception(exception)
+
+    def stop_web_stream_output(self):
+        try:
+            self.liq_client.web_stream_stop()
+        except OSError as exception:
+            logger.exception(exception)
+
+    def start_web_stream(self):
+        try:
+            self.liq_client.web_stream_start()
+            self.current_prebuffering_stream_id = None
+        except OSError as exception:
+            logger.exception(exception)
+
+    def start_web_stream_buffer(self, event: WebStreamEvent):
+        try:
+            self.liq_client.web_stream_start_buffer(event.row_id, event.uri)
+            self.current_prebuffering_stream_id = event.row_id
+        except OSError as exception:
+            logger.exception(exception)
+
+    def get_current_stream_id(self) -> str:
+        try:
+            return self.liq_client.web_stream_get_id()
+        except OSError as exception:
+            logger.exception(exception)
+            return "-1"
+
+    def disconnect_source(self, sourcename):
+        if sourcename not in ("master_dj", "live_dj"):
+            raise ValueError(f"invalid source name: {sourcename}")
+
+        try:
+            logger.debug("Disconnecting source: %s", sourcename)
+            self.liq_client.source_disconnect(sourcename)
+        except OSError as exception:
+            logger.exception(exception)
+
+    def switch_source(self, sourcename, status):
+        if sourcename not in ("master_dj", "live_dj", "scheduled_play"):
+            raise ValueError(f"invalid source name: {sourcename}")
+
+        try:
+            logger.debug('Switching source: %s to "%s" status', sourcename, status)
+            self.liq_client.source_switch_status(sourcename, status == "on")
+        except OSError as exception:
+            logger.exception(exception)
+
+
 class PypoLiquidsoap:
     def __init__(self, liq_client: LiquidsoapClient):
         self.liq_queue_tracker: Dict[int, Optional[FileEvent]] = {