add consumer device relay

quimby-relay

@@ -179,7 +179,7 @@ modifiers = {
 }
 
 
-class forwarder(object):
+class Keyboard(object):
     def __init__(self, dst):
         self.modifier_state = 0
         self.keys_down = set()
@@ -187,7 +187,6 @@ class forwarder(object):
 
     def __call__(self, event):
         if event.type != evdev.ecodes.EV_KEY:
-            print("Not a key event", event)
             return
 
         data = evdev.categorize(event)
@@ -218,20 +217,51 @@ class forwarder(object):
         packet += [0] * (8 - len(packet))
 
         assert(len(packet) == 8)
-
-        print(bytes(packet))
         os.write(self.dst, bytes(packet))
 
 
+class Consumer(object):
+    BITS = {
+        evdev.ecodes.KEY_NEXTSONG: (1 << 0),
+        evdev.ecodes.KEY_PREVIOUSSONG: (1 << 1),
+        # STOP key: 2
+        # EJECT key: 3
+        evdev.ecodes.KEY_PLAYPAUSE: (1 << 4),
+        evdev.ecodes.KEY_MUTE: (1 << 5),
+        evdev.ecodes.KEY_MUTE: (1 << 5),
+        evdev.ecodes.KEY_VOLUMEUP: (1 << 6),
+        evdev.ecodes.KEY_VOLUMEDOWN: (1 << 7),
+    }
+
+    def __init__(self, dst):
+        self.state = 0
+        self.dst = dst
+
+    def __call__(self, event):
+        if event.type != evdev.ecodes.EV_KEY:
+            return
+
+        data = evdev.categorize(event)
+        bit = self.BITS.get(data.scancode, None)
+        if bit is None:
+            return
+
+        self.state ^= bit
+        payload=bytes([self.state])
+        os.write(self.dst, payload)
+
 
 if __name__ == '__main__':
     parser = argparse.ArgumentParser(description='Forward input events to a USB descriptor')
     parser.add_argument('-i', '--input', type=str, action='append', help='A source evdev device')
-    parser.add_argument('-o', '--output', type=str, help='The output HID device')
+    parser.add_argument('-k', '--keyboard', type=str, help='The keyboard output HID device')
+    parser.add_argument('-m', '--mouse', type=str, help='The mouse output HID device')
+    parser.add_argument('-c', '--consumer', type=str, help='The consumer output HID device')
 
     args = parser.parse_args()
 
-    fwd = forwarder(os.open(args.output, os.O_WRONLY))
+    kbd = Keyboard(os.open(args.keyboard, os.O_WRONLY))
+    con = Consumer(os.open(args.consumer, os.O_WRONLY))
     src = [evdev.InputDevice(i) for i in args.input]
 
     selector = selectors.DefaultSelector()
@@ -244,4 +274,5 @@ if __name__ == '__main__':
         for key, mask in selector.select():
             device = key.fileobj
             for event in device.read():
-                fwd(event)
+                kbd(event)
+                con(event)

quimby-setup

@@ -5,8 +5,8 @@ import os
 import sys
 
 keyboard = {
-    'protocol': 1,
-    'subclass': 1,
+    'protocol': 1, # keyboard
+    'subclass': 1, # boot interface
     'report_length': 8,
     'report_desc': bytes([
         0x05, 0x01, # Usage Page (Generic Desktop Ctrls)
@@ -48,7 +48,7 @@ keyboard = {
         0x25, 0x65, #   Logical Maximum (101)
         0x05, 0x07, #   Usage Page (Kbrd/Keypad)
         0x19, 0x00, #   Usage Minimum (0x00)
-        0x29, 0x65, #   Usage Maximum (0x65)
+        0x29, 0x9a, #   Usage Maximum (0x9a)
         0x81, 0x00, #   Input (Data,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)
 
         0xC0,       # End Collection
@@ -57,8 +57,8 @@ keyboard = {
 
 
 mouse = {
-    'protocol': 2,
-    'subclass': 1,
+    'protocol': 2, # mouse
+    'subclass': 1, # boot interface
     'report_length': 4,
     'report_desc': bytes([
         0x05, 0x01, # Usage Page (Generic Desktop Ctrls)
@@ -92,6 +92,33 @@ mouse = {
 }
 
 
+media = {
+    'protocol': 1, # Keyboard
+    'subclass': 0, # None
+    'report_length': 1,
+    'report_desc': bytes([
+        0x05, 0x0C, # Usage Page (Consumer)
+        0x09, 0x01, # Usage (Consumer Control)
+        0xA1, 0x01, # Collection (Application)
+        0x05, 0x0C, #   Usage Page (Consumer)
+        0x15, 0x00, #   Logical Minimum (0)
+        0x25, 0x01, #   Logical Maximum (1)
+        0x75, 0x01, #   Report Size (1)
+        0x95, 0x08, #   Report Count (8)
+        0x09, 0xB5, #   Usage (Scan Next Track)
+        0x09, 0xB6, #   Usage (Scan Previous Track)
+        0x09, 0xB7, #   Usage (Stop)
+        0x09, 0xB8, #   Usage (Eject)
+        0x09, 0xCD, #   Usage (Play/Pause)
+        0x09, 0xE2, #   Usage (Mute)
+        0x09, 0xE9, #   Usage (Volume Increment)
+        0x09, 0xEA, #   Usage (Volume Decrement)
+        0x81, 0x02, #   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
+        0xC0,       # End Collection
+    ])
+}
+
+
 try:
     UDC = os.listdir('/sys/class/udc')
     if len(UDC) != 1:
@@ -132,6 +159,7 @@ files = {
     'functions': {
         'hid.usb0': keyboard,
         'hid.usb1': mouse,
+        'hid.usb2': media,
     }
 }
 

systemd/system/quimby.service

@@ -4,7 +4,10 @@ Requires=bluetooth.service
 
 [Service]
 Type=simple
+#After=bluetooth.service
 ExecStartPre=/usr/local/bin/quimby-setup quimby
-ExecStart=/usr/local/bin/quimby-relay --input /dev/input/event0 --output /dev/hidg0
+ExecStart=/usr/local/bin/quimby-relay --input /dev/input/event0 --input /dev/input/event1 --keyboard /dev/hidg0 --consumer /dev/hidg2
 ExecStop=/usr/local/bin/quimby-cleanup quimby
 
+#[Install]
+#WantedBy=bluetooth.target