android/hidhost: Handle uhid output and feature events

Data read on uhid events output and feature has to be send through
SET_REPORT request to HID device.

diff --git a/android/hidhost.c b/android/hidhost.c
index cba80a6..0bc7154 100644 (file)
--- a/android/hidhost.c
+++ b/android/hidhost.c
@@ -155,7 +155,30 @@ static void hid_device_free(struct hid_device *dev)
 
 static void handle_uhid_event(struct hid_device *dev, struct uhid_event *ev)
 {
-       DBG("UHID_OUTPUT UHID_FEATURE unsupported");
+       int fd, i;
+       uint8_t *req = NULL;
+       uint8_t req_size = 0;
+
+       if (!(dev->ctrl_io))
+               return;
+
+       req_size = 1 + (ev->u.output.size / 2);
+       req = g_try_malloc0(req_size);
+       if (!req)
+               return;
+
+       req[0] = HID_MSG_SET_REPORT | ev->u.output.rtype;
+       for (i = 0; i < (req_size - 1); i++)
+               sscanf((char *) &(ev->u.output.data)[i * 2],
+                                                       "%hhx", &req[1 + i]);
+
+       fd = g_io_channel_unix_get_fd(dev->ctrl_io);
+
+       if (write(fd, req, req_size) < 0)
+               error("error writing set_report: %s (%d)",
+                                               strerror(errno), errno);
+
+       g_free(req);
 }
 
 static gboolean uhid_event_cb(GIOChannel *io, GIOCondition cond,