Get Pyglet playback working

CONTRIBUTING.md

@@ -7,6 +7,10 @@ You need to have:
 - Python 2.7 (for now, sorry 😢) and `pip` installed
 - The `pipenv` tool ([See here for installation instructions](https://pipenv.readthedocs.io/en/latest/install/#installing-pipenv))
 
+You should consider installing:
+
+- Python 3.6 or above (ideally 3.7 or above)
+
 ## Setting up your environment
 
 - Clone this repo

README.md

@@ -7,6 +7,25 @@ back short audio tracks.
 
 Written by Mark Mollineaux (2013) <bufordsharkley@gmail.com>
 
+## Installation and running
+
+### Prerequisites
+
+You need the following:
+
+- Python 2.7 and `pip`
+- Recommended: AVBin for playing spotbox files (https://avbin.github.io/AVbin/Download.html)
+
+Use `pip install` to install:
+
+- `pip install pyglet`
+
+### Steps to install
+
+- Download the spotbox code from GitHub (clone or zip)
+- Navigate to the repository
+- Create a shortcut, script, or alias to run `python spotbox.py`.
+
 ## Contributing
 
 Read the [contribution guidelines](./CONTRIBUTING.md) to help out.

spotbox/spotbox.py

@@ -39,6 +39,6 @@
         playback = sbplayback.iTunesPlayback()
     else:
         # this class does nothing for load/play/stop/etc, just pass for each
-        playback = sbplayback.Playback()
+        playback = sbplayback.PygletPlayback()
     spotboxgui = SpotboxTkInterface(configuration, datasheets, playback)
     spotboxgui.run_continuously()

spotbox/spotboxgui.py

@@ -158,6 +158,8 @@ def _loadspot(self, spottext, spotnumber):
                 self._menus.filetimetoload)
 
     def _playspot(self, spotnumber):
+        self._stop()
+
         self._playback.play(spotnumber)
         countdowntostart = self.countdownarray[spotnumber]
         for countdown in self.countdownarray:

spotbox/spotboxplayback.py

@@ -2,8 +2,9 @@
 
 """SPOTBOX media playback backend"""
 
-# Note-- non-iTunes mode is not yet fully implemented.
+import os
 
+from spotboxconfig import folder_configuration
 
 class Playback:
     """A playback object, allows for audio files to be loaded, played back,
@@ -74,28 +75,53 @@ def play(self, spotnumber):
 
 
 class PygletPlayback(Playback):
+    """Provide playback support using the Pyglet library.
+
+    See https://bitbucket.org/pyglet/pyglet/overview"""
 
     def __init__(self):
-        import pyglet
-        self.playerarray = []
+        self.players = {}
+        self.media = {}
 
     def initialize_one_player(self, spotnumber):
-        pygplayer = self.pyglet.media.Player()
-        self.playerarray.append(pygplayer)
+        import pyglet
+        pygplayer = pyglet.media.Player()
+
+        if spotnumber in self.players:
+            # Make sure to free up queues and player resources
+            self.players[spotnumber].delete()
+
+        self.players[spotnumber] = pygplayer
 
     def stop(self):
-        for player in self.playerarray:
+        for spot_number, player in self.players.iteritems():
             player.pause()
 
+            # Need to check to avoid OpenGL access exception (ugh)
+            if player.time > 0:
+                player.seek(0.0)
+
     def load(self, spotnumber, filepath):
-        # at moment, throws "NOT A WAVE" exception, even for .wav
-        print filepath
-        media = self.pyglet.media.load(filepath, streaming=False)
-        del self.playerarray[spotnumber]
-        self.playerarray[spotnumber].queue(media)
+        import pyglet
+
+        # To support non-WAV files, you may need to install AVBin (http://avbin.github.io/AVbin)
+        self.media[spotnumber] = pyglet.media.load(os.path.join(folder_configuration['MEDIADIRECTORY'], filepath))
+
+        return True
 
     def play(self, spotnumber):
-        self.playerarray[spotnumber].play()
+        player = self.players[spotnumber]
+
+        if player.source is None:
+            # re-enqueue media
+            player.queue(self.media[spotnumber])
+
+        if player.time > 0:
+            # play from beginning
+            player.seek(0)
+
+        player.play()
+
 
 if __name__ == '__main__':
     pass