usb microphone

kvmd/apps/__init__.py

@@ -611,6 +611,11 @@ def _get_config_scheme() -> dict:
                     "kvm_mac":  Option("",    type=valid_mac, if_empty=""),
                 },
 
+                "audio": {
+                    "enabled":  Option(False, type=valid_bool),
+                    "start":    Option(True,  type=valid_bool),
+                },
+
                 "drives": {
                     "enabled": Option(False, type=valid_bool),
                     "start":   Option(True,  type=valid_bool),

kvmd/apps/otg/__init__.py

@@ -112,6 +112,18 @@ class _GadgetConfig:
         self.__msd_instance = 0
         _mkdir(meta_path)
 
+    def add_audio_capture(self, start: bool) -> None:
+        eps = 2
+        func = "uac2.usb0"
+        func_path = self.__create_function(func)
+        _write(join(func_path, "c_chmask"), 0)
+        _write(join(func_path, "p_chmask"), 0b11)
+        _write(join(func_path, "p_srate"), 48000)
+        _write(join(func_path, "p_ssize"), 2)
+        if start:
+            self.__start_function(func, eps)
+        self.__create_meta(func, "Audio Capture", eps)
+
     def add_serial(self, start: bool) -> None:
         eps = 3
         func = "acm.usb0"
@@ -295,6 +307,10 @@ def _cmd_start(config: Section) -> None:  # pylint: disable=too-many-statements,
         logger.info("===== Serial =====")
         gc.add_serial(cod.serial.start)
 
+    if cod.audio.enabled:
+        logger.info("===== Audio Capture =====")
+        gc.add_audio_capture(cod.audio.start)
+
     logger.info("===== Preparing complete =====")
 
     logger.info("Enabling the gadget ...")