Only show direct sound outputs on windows.

helpers/device_manager.py

@@ -1,14 +1,21 @@
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, List, Optional, Tuple
 import sounddevice as sd
 from helpers.os_environment import isLinux, isMacOS, isWindows
 import glob
 
+# TODO: https://wiki.libsdl.org/FAQUsingSDL maybe try setting some of these env variables for choosing different host APIs?
+WINDOWS_APIS = ["Windows DirectSound"]
+
 
 class DeviceManager:
     @classmethod
     def _isOutput(cls, device: Dict[str, Any]) -> bool:
         return device["max_output_channels"] > 0
 
+    @classmethod
+    def _isHostAPI(cls, host_api) -> bool:
+        return host_api
+
     @classmethod
     def _getAudioDevices(cls) -> sd.DeviceList:
         # To update the list of devices
@@ -20,10 +27,24 @@ class DeviceManager:
         return devices
 
     @classmethod
-    def getAudioOutputs(cls) -> List[Dict]:
+    def getAudioOutputs(cls) -> Tuple[List[Dict]]:
-        outputs: List[Dict] = list(filter(cls._isOutput, cls._getAudioDevices()))
+        host_apis = sd.query_hostapis()
+        devices: sd.DeviceList = cls._getAudioDevices()
+
+        valid_host_apis = []
+        for host_api_id in range(len(host_apis)):
+            if isWindows() and host_apis[host_api_id]["name"] not in WINDOWS_APIS:
+                continue
+
+            host_api_devices = (device for device in devices if device["hostapi"] == host_api_id)
+
+            outputs: List[Dict] = list(filter(cls._isOutput, host_api_devices))
             outputs = sorted(outputs, key=lambda k: k["name"])
-        return [{"name": None}] + outputs
+
+            valid_host_apis.append(host_apis[host_api_id])
+            valid_host_apis[-1]["output_devices"] = outputs
+
+        return host_apis
 
     @classmethod
     def getSerialPorts(cls) -> List[Optional[str]]:

templates/config.html

@@ -1,10 +1,14 @@
 {% extends 'base.html' %}
 {% block content_inner %}
 <h3 class="h5">Audio Outputs</h3>
+<p><strong>Please note: Currently BAPSicle does not support choosing which Host API is used. This list is for reference.</strong></p>
+
+{% for host_api in data.outputs %}
+  <hr>
+  {{host_api.name}}
+  <br>
   <code>
-
+  {% for output in host_api.output_devices %}
-  {% for output in data.outputs %}
-
   Set for:
     {% for channel in data.channels %}
       <a href="/player/{{channel.channel}}/output/{{output.name}}">Channel {{channel.channel}}</a>
@@ -12,4 +16,5 @@
     - {% if output.name %}{{output.name}}{% else %}System Default Output{% endif %}<br>
   {% endfor %}
   </code>
+{% endfor %}
 {% endblock %}