Find HID report IDs in output and feature reports on Windows.

device/hid/hid_service_win.h

Index: device/hid/hid_service_win.h
diff --git a/device/hid/hid_service_win.h b/device/hid/hid_service_win.h
index 8f18765032835853c728cefffc8c931bb55cf1e6..ebc0613e7eb83e8bf738b353c0afec6faeedb665 100644
--- a/device/hid/hid_service_win.h
+++ b/device/hid/hid_service_win.h
@@ -10,6 +10,20 @@
 #include "device/hid/hid_device_info.h"
 #include "device/hid/hid_service.h"
 
+#if defined(OS_WIN)
+
+#define INITGUID

[rpaquay, 2014/08/22 21:36:30]

I am surprised this works, as usually INITGUID is used in .cc files to avoid
defining the same GUID multiple times and getting linker errors. Am I missing
something?

[Reilly Grant (use Gerrit), 2014/08/22 21:54:54]

It works but probably only because of the limited usage of this header. I move
it when chasing another compilation issue but it wasn't necessary.

+
+#include <windows.h>
+#include <hidclass.h>
+
+extern "C" {
+#include <hidsdi.h>
+#include <hidpi.h>
+}
+
+#endif  // defined(OS_WIN)
+
 namespace device {
 
 class HidConnection;
@@ -27,6 +41,14 @@ class HidServiceWin : public HidService {
   virtual ~HidServiceWin();
 
   void Enumerate();
+  static void CollectInfoFromButtonCaps(PHIDP_PREPARSED_DATA preparsed_data,
+                                        HIDP_REPORT_TYPE report_type,
+                                        USHORT button_caps_length,
+                                        HidCollectionInfo* collection_info);
+  static void CollectInfoFromValueCaps(PHIDP_PREPARSED_DATA preparsed_data,
+                                       HIDP_REPORT_TYPE report_type,
+                                       USHORT value_caps_length,
+                                       HidCollectionInfo* collection_info);
   void PlatformAddDevice(const std::string& device_path);
   void PlatformRemoveDevice(const std::string& device_path);