Replace shoutcast implementation with vlc+gtk app

pyproject.toml

@@ -22,6 +22,8 @@ psutil = "^5.9.8"
 exscript = "^2.6.28"
 python-shout = "^0.2.8"
 ffmpeg-python = "^0.2.0"
+python-vlc = "^3.0.21203"
+pygobject = "3.50.0"
 
 [tool.poetry.scripts]
 croaker = "croaker.cli:app"

src/croaker/assets/style.css

@@ -0,0 +1,16 @@
+window {
+    background: #000;
+}
+
+.artwork {
+    background: #FFF;
+}
+
+.label {
+    color: #888; 
+}
+
+.now_playing {
+    color: #FFF;
+    font-weight: bold;
+}

src/croaker/cli.py

@@ -11,8 +11,8 @@ from dotenv import load_dotenv
 from typing_extensions import Annotated
 
 from croaker import path
+from croaker.player import Player
 from croaker.playlist import Playlist
-from croaker.server import server
 
 SETUP_HELP = f"""
 # Root directory for croaker configuration and logs. See also croaker --root.
@@ -25,18 +25,12 @@ CROAKER_ROOT={path.root()}
 #PIDFILE={path.root()}/croaker.pid
 
 # Command and Control TCP Server bind address
-HOST=0.0.0.0
+HOST=127.0.0.1
 PORT=8003
 
 # the kinds of files to add to playlists
 MEDIA_GLOB=*.mp3,*.flac,*.m4a
 
-# Icecast2 configuration for Liquidsoap
-ICECAST_PASSWORD=
-ICECAST_MOUNT=
-ICECAST_HOST=
-ICECAST_PORT=
-ICECAST_URL=
 """
 
 app = typer.Typer()
@@ -90,15 +84,8 @@ def start(
     """
     Start the Croaker command and control server.
     """
-    server.start(daemonize=daemonize, shoutcast_enabled=shoutcast)
+    player = Player()
-
+    player.run()
-
-@app.command()
-def stop():
-    """
-    Terminate the server.
-    """
-    server.stop()
 
 
 @app.command()

src/croaker/gui.py

@@ -0,0 +1,189 @@
+import threading
+import time
+
+import gi
+import vlc
+
+from croaker import path
+from croaker.playlist import Playlist, load_playlist
+
+gi.require_version("Gtk", "4.0")
+gi.require_version("Gdk", "4.0")
+from gi.repository import GLib, GObject, Gdk, Gtk, Pango # noqa E402
+
+
+class PlayerWindow(Gtk.ApplicationWindow):
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        self._max_width = 300
+        self._max_height = 330
+        self._artwork_width = self._max_width
+        self._artwork_height = 248
+
+        css_provider = Gtk.CssProvider()
+        css_provider.load_from_path(str(path.assets() / 'style.css'))
+        Gtk.StyleContext.add_provider_for_display(
+            Gdk.Display.get_default(),
+            css_provider,
+            Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION
+        )
+        self.set_title("Croaker Radio")
+        self._root = Gtk.Fixed()
+        self._root.set_size_request(self._max_width, self._max_height)
+        self.set_child(self._root)
+
+        self._artwork = Gtk.Fixed()
+        self._track = None
+        self._artist = None
+        self._album = None
+
+        self._draw_window()
+
+
+    def _draw_window(self):
+        margin_size = 8
+        label_width = self._max_width - (2 * margin_size)
+        label_height = 16
+        label_spacing = 8
+
+        self._artwork.set_size_request(self._artwork_width, self._artwork_height)
+        self._root.put(self._artwork, 0, 0)
+        self.draw_artwork()
+
+        def label(text: str):
+            l = Gtk.Label()
+            l.set_ellipsize(Pango.EllipsizeMode.END)
+            l.add_css_class("label")
+            l.set_text(text)
+            l.set_size_request(label_width, label_height)
+            l.set_justify(Gtk.Justification.LEFT)
+            l.set_hexpand(True)
+            l.set_xalign(0)
+            return l
+
+        self._track = label("CROAKER RADIO")
+        self._track.add_css_class("now_playing")
+        self._root.put(self._track, margin_size, self._artwork_height + label_spacing)
+
+        self._artist = label("Artist")
+        self._root.put(self._artist, margin_size, self._artwork_height + (2 * label_spacing) + label_height)
+
+        self._album = label("Album")
+        self._root.put(self._album, margin_size, self._artwork_height + (3 * label_spacing) + (2 * label_height))
+
+    def now_playing(self, track: str, artist: str, album: str):
+        self._track.set_text(f"🎵  {track}")
+        self._artist.set_text(f"🐸  {artist}")
+        self._album.set_text(f"💿  {album}")
+
+    def draw_artwork(self):
+        image1 = Gtk.Image()
+        image1.set_from_file(str(path.assets() / 'froghat.png'))
+        image1.set_size_request(self._artwork_width, self._artwork_height)
+        image1.add_css_class("artwork")
+        self._artwork.put(image1, 0, 0)
+
+
+class GUI(Gtk.Application):
+    """
+    A simple GTK application that instaniates a VLC player and listens for commands.
+    """
+
+    def __init__(self):
+        super().__init__()
+
+        self._playlist: Playlist | None = None
+
+        self._vlc_instance = vlc.Instance("--loop")
+        self._media_list_player = vlc.MediaListPlayer()
+        self._player.audio_set_volume(30)
+
+        self._signal_handler = threading.Thread(target=self._wait_for_signals)
+        self._signal_handler.daemon = True
+
+        self.play_requested = threading.Event()
+        self.back_requested = threading.Event()
+        self.ffwd_requested = threading.Event()
+        self.stop_requested = threading.Event()
+        self.load_requested = threading.Event()
+        self.clear_requested = threading.Event()
+        self.shutdown_requested = threading.Event()
+
+        GLib.set_application_name("Croaker Radio")
+
+    @property
+    def _player(self):
+        return self._media_list_player.get_media_player()
+
+    def do_activate(self):
+        self._signal_handler.start()
+        self._window = PlayerWindow(application=self)
+        self._window.present()
+
+    def load(self, playlist_name: str):
+        self.clear()
+        self._playlist = load_playlist(playlist_name)
+
+        media = self._vlc_instance.media_list_new()
+        for track in self._playlist.tracks:
+            media.add_media(self._vlc_instance.media_new(track))
+
+        self._media_list_player.set_media_list(media)
+        self._media_list_player.play()
+        self._update_now_playing()
+        events = self._player.event_manager()
+        events.event_attach(vlc.EventType.MediaPlayerMediaChanged, self._update_now_playing)
+
+    def _update_now_playing(self, event=None):
+        track = "[NOTHING PLAYING]"
+        artist = "artist"
+        album = "album"
+        media = self._player.get_media()
+        if media:
+            media.parse()
+            track = media.get_meta(vlc.Meta.Title)
+            artist = media.get_meta(vlc.Meta.Artist)
+            album = media.get_meta(vlc.Meta.Album)
+        self._window.now_playing(track, artist, album)
+
+    def _wait_for_signals(self):
+        while not self.shutdown_requested.is_set():
+            if self.play_requested.is_set():
+                self.play_requested.clear()
+                GLib.idle_add(self._media_list_player.play)
+
+            if self.back_requested.is_set():
+                self.back_requested.clear()
+                GLib.idle_add(self._media_list_player.previous)
+
+            if self.ffwd_requested.is_set():
+                self.ffwd_requested.clear()
+                GLib.idle_add(self._media_list_player.next)
+
+            if self.stop_requested.is_set():
+                self.stop_requested.clear()
+                GLib.idle_add(self._media_list_player.stop)
+
+            if self.load_requested.is_set():
+                self.load_requested.clear()
+                GLib.idle_add(self._media_list_player.load)
+
+            if self.clear_requested.is_set():
+                self.clear_requested.clear()
+                GLib.idle_add(self.clear)
+
+            time.sleep(0.25)
+        GLib.idle_add(self.quit)
+        exit()
+
+    def clear(self):
+        if self._media_list_player:
+            self._media_list_player.stop()
+        self._playlist = None
+
+    def quit(self):
+        self.clear()
+        self._vlc_instance.release()
+        exit()

src/croaker/path.py

@@ -9,6 +9,10 @@ def root():
     return Path(os.environ.get("CROAKER_ROOT", "~/.dnd/croaker")).expanduser()
 
 
+def assets():
+    return Path(__file__).parent / 'assets'
+
+
 def playlist_root():
     path = Path(os.environ.get("PLAYLIST_ROOT", root() / "playlists")).expanduser()
     return path

src/croaker/player.py

@@ -0,0 +1,31 @@
+import logging
+import threading
+
+import gi
+
+from croaker.gui import GUI
+from croaker.server import Controller
+
+gi.require_version("Gtk", "4.0")
+from gi.repository import GLib, GObject, Gtk  # noqa E402
+
+logger = logging.getLogger("player")
+
+
+class Player(GUI):
+    """
+    A GTK GUI application with a TCP command and control server.
+    """
+
+    def __init__(self):
+        super().__init__()
+        self._controller = threading.Thread(target=self._start_controller)
+        self._controller.daemon = True
+
+    def do_activate(self):
+        self._controller.start()
+        super().do_activate()
+        self.load("session_start")
+
+    def _start_controller(self):
+        Controller(self).serve_forever(poll_interval=0.25)

src/croaker/server.py

@@ -1,25 +1,20 @@
 import logging
 import os
-import queue
+import socket
 import socketserver
-from pathlib import Path
+import time
-from time import sleep
 
-import daemon
+from croaker.gui import GUI
-
+from croaker.path import playlist_root
-from croaker import path
-from croaker.pidfile import pidfile
 from croaker.playlist import load_playlist
-from croaker.streamer import AudioStreamer
 
-logger = logging.getLogger("server")
+logger = logging.getLogger(__name__)
 
 
 class RequestHandler(socketserver.StreamRequestHandler):
     """
     Instantiated by the TCPServer when a request is received. Implements the
-    command and control protocol and sends commands to the shoutcast source
+    command and control protocol and issues commands to the GUI application.
-    client on behalf of the user.
     """
 
     supported_commands = {
@@ -46,43 +41,44 @@ class RequestHandler(socketserver.StreamRequestHandler):
         4        Ignored
         5+       Arguments
         """
-        while True:
+        while self.should_listen:
+            time.sleep(0.01)
             self.data = self.rfile.readline().strip().decode()
             logger.debug(f"Received: {self.data}")
             try:
                 cmd = self.data[0:4].strip().upper()
-                args = self.data[5:]
+                if not cmd:
+                    continue
+                elif cmd not in self.supported_commands:
+                    self.send(f"ERR Unknown Command '{cmd}'")
             except IndexError:
                 self.send(f"ERR Command not understood '{cmd}'")
-                sleep(0.001)
                 continue
 
-            if not cmd:
+            args = self.data[5:]
-                sleep(0.001)
+            if cmd == "KTHX":
-                continue
-            elif cmd not in self.supported_commands:
-                self.send(f"ERR Unknown Command '{cmd}'")
-                sleep(0.001)
-                continue
-            elif cmd == "KTHX":
                 return self.send("KBAI")
 
             handler = getattr(self, f"handle_{cmd}", None)
             if not handler:
                 self.send(f"ERR No handler for {cmd}.")
+                continue
+
             handler(args)
-            if not self.should_listen:
-                break
 
     def send(self, msg):
         return self.wfile.write(msg.encode() + b"\n")
 
     def handle_PLAY(self, args):
-        self.server.load(args)
+        self.server.player.load(args)
+        return self.send("OK")
+
+    def handle_BACK(self, args):
+        self.server.player.back_requested.set()
         return self.send("OK")
 
     def handle_FFWD(self, args):
-        self.server.ffwd()
+        self.server.player.ffwd_requested.set()
         return self.send("OK")
 
     def handle_LIST(self, args):
@@ -92,99 +88,31 @@ class RequestHandler(socketserver.StreamRequestHandler):
         return self.send("\n".join(f"{cmd} {txt}" for cmd, txt in self.supported_commands.items()))
 
     def handle_STOP(self, args):
-        return self.streamer.stop_requested.set()
+        return self.server.player.stop_requested.set()
 
     def handle_STFU(self, args):
         self.send("Shutting down.")
-        self.server.stop()
+        self.server.shutdown()
 
 
-class CroakerServer(socketserver.TCPServer):
+class Controller(socketserver.TCPServer):
     """
-    A Daemonized TCP Server that also starts a Shoutcast source client.
+    A TCP Server that listens for commands and proxies the GUI audio player.
     """
 
-    allow_reuse_address = True
+    def __init__(self, player: GUI):
+        self.player = player
+        super().__init__((os.environ["HOST"], int(os.environ["PORT"])), RequestHandler)
 
-    def __init__(self):
+    def server_bind(self):
-        self._context = daemon.DaemonContext()
+        self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
-        self._queue = queue.Queue()
+        self.socket.bind(self.server_address)
-        self._streamer = None
-        self.playlist = None
 
-    def _pidfile(self):
+    def shutdown(self):
-        return pidfile(path.root() / "croaker.pid")
+        self.player.shutdown_requested.set()
-
+        exit()
-    @property
-    def streamer(self):
-        return self._streamer
-
-    def bind_address(self):
-        return (os.environ["HOST"], int(os.environ["PORT"]))
-
-    def _daemonize(self) -> None:
-        """
-        Daemonize the current process.
-        """
-        logger.info(f"Daemonizing controller; pidfile and output in {path.root()}")
-        self._context.pidfile = self._pidfile()
-        self._context.stdout = open(path.root() / Path("croaker.out"), "wb", buffering=0)
-        self._context.stderr = open(path.root() / Path("croaker.err"), "wb", buffering=0)
-
-        # when open() is called, all open file descriptors will be closed, as
-        # befits a good daemon. However this will also close the socket on
-        # which the TCPServer is listening! So let's keep that one open.
-        self._context.files_preserve = [self.fileno()]
-        self._context.open()
-
-    def start(self, daemonize: bool = True, shoutcast_enabled: bool = True) -> None:
-        """
-        Start the shoutcast controller background thread, then begin listening for connections.
-        """
-        logger.info(f"Starting controller on {self.bind_address()}.")
-        super().__init__(self.bind_address(), RequestHandler)
-        if daemonize:
-            self._daemonize()
-        try:
-            logger.debug("Starting AudioStreamer...")
-            self._streamer = AudioStreamer(self._queue, shoutcast_enabled=shoutcast_enabled)
-            self.streamer.start()
-            self.load("session_start")
-            self.serve_forever()
-        except KeyboardInterrupt:
-            logger.info("Keyboard interrupt detected.")
-            self.streamer.shutdown_requested.set()
-            self.stop()
-
-    def stop(self):
-        self._pidfile()
-
-    def ffwd(self):
-        logger.debug("Sending SKIP signal to streamer...")
-        self.streamer.skip_requested.set()
-
-    def clear_queue(self):
-        logger.debug("Requesting a clear...")
-        self.streamer.clear_requested.set()
-        while self.streamer.clear_requested.is_set():
-            sleep(0.001)
-        logger.debug("Cleared")
 
     def list(self, playlist_name: str = None):
         if playlist_name:
             return str(load_playlist(playlist_name))
-        return "\n".join([str(p.name) for p in path.playlist_root().iterdir()])
+        return "\n".join([str(p.name) for p in playlist_root().iterdir()])
-
-    def load(self, playlist_name: str):
-        logger.debug(f"Switching to {playlist_name = }")
-        self.streamer.stop_requested.set()
-        if self.playlist:
-            self.clear_queue()
-        self.playlist = load_playlist(playlist_name)
-        logger.debug(f"Loaded new playlist {self.playlist = }")
-        for track in self.playlist.tracks:
-            self._queue.put(str(track).encode())
-        self.streamer.start_requested.set()
-
-
-server = CroakerServer()

src/croaker/streamer.py

@@ -1,168 +0,0 @@
-import logging
-import os
-import queue
-import threading
-from dataclasses import dataclass
-from functools import cached_property
-from pathlib import Path
-from time import sleep
-
-import shout
-
-from croaker.transcoder import FrameAlignedStream
-
-logger = logging.getLogger("streamer")
-
-
-class AudioStreamer(threading.Thread):
-    """
-    Receive filenames from the controller thread and stream the contents of
-    those files to the icecast server.
-    """
-
-    def __init__(self, queue: queue.Queue = queue.Queue(), chunk_size: int = 8092, shoutcast_enabled: bool = True):
-        super().__init__()
-        self.queue = queue
-        self.chunk_size = chunk_size
-        self._shoutcast_enabled = shoutcast_enabled
-        self.skip_requested = threading.Event()
-        self.stop_requested = threading.Event()
-        self.start_requested = threading.Event()
-        self.clear_requested = threading.Event()
-        self.shutdown_requested = threading.Event()
-
-    @cached_property
-    def silence(self):
-        return FrameAlignedStream(Path(__file__).parent / "silence.mp3", chunk_size=self.chunk_size)
-
-    @cached_property
-    def _out(self):
-        if self._shoutcast_enabled:
-            s = shout.Shout()
-        else:
-            s = debugServer()
-        s.name = "Croaker Radio"
-        s.url = os.environ["ICECAST_URL"]
-        s.mount = os.environ["ICECAST_MOUNT"]
-        s.host = os.environ["ICECAST_HOST"]
-        s.port = int(os.environ["ICECAST_PORT"])
-        s.password = os.environ["ICECAST_PASSWORD"]
-        s.protocol = os.environ.get("ICECAST_PROTOCOL", "http")
-        s.format = os.environ.get("ICECAST_FORMAT", "mp3")
-        return s
-
-    def run(self):  # pragma: no cover
-        while not self.shutdown_requested.is_set():
-            try:
-                self.connect()
-                self.stream_forever()
-                break
-            except shout.ShoutException as e:
-                logger.error("Error connecting to shoutcast server. Will sleep and try again.", exc_info=e)
-                sleep(3)
-        self.shutdown()
-        self.shutdown_requested.clear()
-
-    def connect(self):
-        logger.info(f"Connecting to downstream server at {self._out}")
-        self._out.close()
-        self._out.open()
-
-    def shutdown(self):
-        if hasattr(self, "_out"):
-            self._out.close()
-            del self._out
-        self.clear_queue()
-        logger.info("Shutting down.")
-
-    def clear_queue(self):
-        logger.info("Clearing queue...")
-        while not self.queue.empty():
-            self.queue.get()
-
-    def queued_audio_source(self):
-        """
-        Return a filehandle to the next queued audio source, or silence if the queue is empty.
-        """
-        try:
-            track = Path(self.queue.get(block=False).decode())
-            logger.debug(f"Streaming {track.stem = }")
-            return FrameAlignedStream(track, chunk_size=self.chunk_size), track.stem
-        except queue.Empty:
-            logger.debug("Nothing queued; enqueing silence.")
-        except Exception as exc:
-            logger.error("Caught exception; falling back to silence.", exc_info=exc)
-        return self.silence, "[NOTHING PLAYING]"
-
-    def pause_if_necessary(self):
-        while self.stop_requested.is_set():
-            if self.start_requested.is_set():
-                self.stop_requested.clear()
-                self.start_requested.clear()
-                return
-            sleep(0.001)
-
-    def stream_forever(self):
-        while not self.shutdown_requested.is_set():
-            self.pause_if_necessary()
-            stream, title = self.queued_audio_source()
-            logging.debug(f"Starting stream of {title = }")
-            self._out.set_metadata({"song": title})
-            for chunk in stream:
-                if self.skip_requested.is_set():
-                    logger.info("EVENT: Skip")
-                    self.skip_requested.clear()
-                    break
-
-                if self.clear_requested.is_set():
-                    logger.info("EVENT: Clear")
-                    self.clear_queue()
-                    self.clear_requested.clear()
-                    break
-
-                if self.stop_requested.is_set():
-                    logger.info("EVENT: Stop")
-                    break
-
-                if self.start_requested.is_set():
-                    self.start_requested.clear()
-                    break
-
-                if self.shutdown_requested.is_set():
-                    logger.info("EVENT: Shutdown")
-                    break
-
-                logger.debug(f"{title}: {len(chunk)} bytes")
-                self._out.send(chunk)
-                self._out.sync()
-
-
-@dataclass
-class debugServer:
-    name: str = "Croaker Debugger"
-    url: str = None
-    mount: str = None
-    host: str = None
-    port: str = None
-    password: str = None
-    format: str = None
-
-    _output_file: Path = Path("/dev/null")  # Path("./croaker.stream.output.mp3")
-    _filehandle = None
-
-    def open(self):
-        self._filehandle = self._output_file.open("wb")
-
-    def close(self):
-        if self._filehandle:
-            self._filehandle.close()
-            self._filehandle = None
-
-    def set_metadata(self, metadata: dict):
-        logger.info(f"debugServer: {metadata = }")
-
-    def send(self, chunk: bytes):
-        self._filehandle.write(chunk)
-
-    def sync(self):
-        self._filehandle.flush()

src/croaker/transcoder.py

@@ -1,151 +0,0 @@
-import io
-import logging
-import os
-import subprocess
-from dataclasses import dataclass
-from pathlib import Path
-
-import ffmpeg
-
-logger = logging.getLogger("transcoder")
-
-
-@dataclass
-class FrameAlignedStream:
-    """
-    Use ffmpeg to transcode a source audio file to mp3 and iterate over the result
-    in frame-aligned chunks. This will ensure that readers will always have a full
-    frame of audio data to parse or emit.
-
-    I learned a lot from https://github.com/pylon/streamp3 figuring this stuff out!
-
-    Usage:
-
-        >>> stream = FrameAlignedStream.from_source(Path('test.flac').open('rb'))
-        >>> for segment in stream:
-            ...
-    """
-
-    source_file: Path
-    chunk_size: int = 1024
-    bit_rate: int = 192000
-    sample_rate: int = 44100
-
-    _transcoder: subprocess.Popen = None
-    _buffer: io.BufferedReader = None
-
-    @property
-    def source(self):
-        if self._buffer:
-            return self._buffer
-        if self._transcoder:
-            return self._transcoder.stdout
-        logger.info("Source is empty")
-        return None
-
-    @property
-    def frames(self):
-        while True:
-            frame = self._read_one_frame()
-            if not frame:
-                return
-            yield frame
-
-    def _read_one_frame(self):
-        """
-        Read the next full audio frame from the input source and return it
-        """
-
-        # step through the source a byte at a time and look for the frame sync.
-        header = None
-        buffer = b""
-        while not header:
-            buffer += self.source.read(4 - len(buffer))
-            if len(buffer) != 4:
-                logging.debug("Reached the end of the source stream without finding another framesync.")
-                return False
-            header = buffer[:4]
-            if header[0] != 0b11111111 or header[1] >> 5 != 0b111:
-                logging.debug(f"Expected a framesync but got {buffer} instead; moving fwd 1 byte.")
-                header = None
-                buffer = buffer[1:]
-
-        # Decode the mp3 header. We could derive the bit_rate and sample_rate
-        # here if we had the lookup tables etc. from the MPEG spec, but since
-        # we control the input, we can rely on them being predefined.
-        version_code = (header[1] & 0b00011000) >> 3
-        padding_code = (header[2] & 0b00000010) >> 1
-        version = version_code & 1 if version_code >> 1 else 2
-        is_padded = bool(padding_code)
-
-        # calculate the size of the whole frame
-        frame_size = 1152 if version == 1 else 576
-        frame_size = self.bit_rate // 8 * frame_size // self.sample_rate
-        if is_padded:
-            frame_size += 1
-
-        # read the rest of the frame from the source
-        frame_data = self.source.read(frame_size - len(header))
-        if len(frame_data) != frame_size - len(header):
-            logging.debug("Reached the end of the source stream without finding a full frame.")
-            return None
-
-        # return the entire frame
-        return header + frame_data
-
-    def __iter__(self):
-        """
-        Generate approximately chunk_size segments of audio data by iterating over the
-        frames, buffering them, and then yielding several as a single bytes object.
-        """
-        try:
-            self._start_transcoder()
-            buf = b""
-            for frame in self.frames:
-                if len(buf) >= self.chunk_size:
-                    yield buf
-                    buf = b""
-                if not frame:
-                    break
-                buf += frame
-            if buf:
-                yield buf
-        finally:
-            self._stop_transcoder()
-
-    def _stop_transcoder(self):
-        if self._transcoder:
-            logger.debug(f"Killing {self._transcoder = }")
-            self._transcoder.kill()
-            self._transcoder = None
-        self._buffer = None
-
-    def _start_transcoder(self):
-        args = [] if os.environ.get("DEBUG") else ["-hide_banner", "-loglevel", "quiet"]
-        self._transcoder = subprocess.Popen(
-            (
-                ffmpeg.input(str(self.source_file))
-                .output(
-                    "pipe:",
-                    map="a",
-                    format="mp3",
-                    # no ID3 headers -- saves having to decode them later
-                    write_xing=0,
-                    id3v2_version=0,
-                    # force sample and bit rates
-                    **{
-                        "b:a": self.bit_rate,
-                        "ar": self.sample_rate,
-                    },
-                )
-                .global_args("-vn", *args)
-                .compile()
-            ),
-            bufsize=self.chunk_size,
-            stdout=subprocess.PIPE,
-            stdin=subprocess.PIPE,
-        )
-
-        # Force close STDIN to prevent ffmpeg from trying to read from it. silly ffmpeg.
-        self._transcoder.stdin.close()
-        logger.debug(f"Spawned ffmpeg (PID {self._transcoder.pid}): {' '.join(self._transcoder.args)}")

test/test_streamer.py

@@ -1,92 +0,0 @@
-import io
-import threading
-from pathlib import Path
-from time import sleep
-from unittest.mock import MagicMock
-
-import pytest
-import shout
-
-from croaker import playlist, streamer
-
-
-@pytest.fixture(scope="session")
-def silence_bytes():
-    # return (Path(streamer.__file__).parent / "silence.mp3").read_bytes()
-    return (Path(__file__).parent / "fixtures" / "transcoded_silence.mp3").read_bytes()
-
-
-@pytest.fixture
-def output_stream():
-    return io.BytesIO()
-
-
-@pytest.fixture
-def mock_shout(output_stream, monkeypatch):
-    def handle_send(buf):
-        print(f"buffering {len(buf)} bytes to output_stream.")
-        output_stream.write(buf)
-
-    mm = MagicMock(spec=shout.Shout, **{"return_value.send.side_effect": handle_send})
-    monkeypatch.setattr("shout.Shout", mm)
-    return mm
-
-
-@pytest.fixture
-def audio_streamer(monkeypatch, mock_shout):
-    return streamer.AudioStreamer()
-
-
-@pytest.fixture
-def thread(audio_streamer):
-    thread = threading.Thread(target=audio_streamer.run)
-    thread.daemon = True
-    yield thread
-    audio_streamer.shutdown_requested.set()
-    thread.join()
-
-
-def wait_for(condition, timeout=2.0):
-    elapsed = 0.0
-    while not condition() and elapsed < 2.0:
-        elapsed += 0.01
-        sleep(0.01)
-    return elapsed <= timeout
-
-
-def wait_for_not(condition, timeout=2.0):
-    return wait_for(lambda: not condition(), timeout=timeout)
-
-
-def test_streamer_clear(audio_streamer, thread):
-    # enqueue some tracks
-    pl = playlist.Playlist(name="test_playlist")
-    for track in pl.tracks:
-        audio_streamer.queue.put(bytes(track))
-    assert not audio_streamer.queue.empty()
-
-    # start the server and send it a clear request
-    thread.start()
-    audio_streamer.clear_requested.set()
-    assert wait_for(audio_streamer.queue.empty)
-    assert wait_for_not(audio_streamer.clear_requested.is_set)
-
-
-def test_streamer_shutdown(audio_streamer, thread):
-    thread.start()
-    audio_streamer.shutdown_requested.set()
-    assert wait_for_not(audio_streamer.shutdown_requested.is_set)
-
-
-def test_streamer_skip(audio_streamer, thread):
-    thread.start()
-    audio_streamer.skip_requested.set()
-    assert wait_for_not(audio_streamer.skip_requested.is_set)
-
-
-def test_streamer_defaults_to_silence(audio_streamer, thread, output_stream, silence_bytes):
-    thread.start()
-    thread.join(timeout=1)
-    output_stream.seek(0, 0)
-    out = output_stream.read()
-    assert silence_bytes in out

test/test_transcoder.py

@@ -1,43 +0,0 @@
-from unittest.mock import MagicMock
-
-import ffmpeg
-import pytest
-
-from croaker import playlist, transcoder
-
-
-@pytest.fixture
-def mock_mp3decoder(monkeypatch):
-    def read(stream):
-        return stream.read()
-
-    monkeypatch.setattr(transcoder, "MP3Decoder", MagicMock(**{"__enter__.return_value.read": read}))
-
-
-@pytest.mark.xfail
-@pytest.mark.parametrize(
-    "suffix, expected",
-    [
-        (".mp3", b"_theme.mp3\n"),
-        (".foo", b"transcoding!\n"),
-    ],
-)
-def test_transcoder_open(monkeypatch, mock_mp3decoder, suffix, expected):
-    monkeypatch.setattr(
-        transcoder,
-        "ffmpeg",
-        MagicMock(
-            spec=ffmpeg,
-            **{
-                "input.return_value."
-                "output.return_value."
-                "global_args.return_value."
-                "compile.return_value": ["echo", "transcoding!"],
-            },
-        ),
-    )
-
-    pl = playlist.Playlist(name="test_playlist")
-    track = [t for t in pl.tracks if t.suffix == suffix][0]
-    with transcoder.open(track) as handle:
-        assert handle.read() == expected