Add generic mapping for gamepad

ui/events/ozone/gamepad/static_gamepad_mapping.cc

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <linux/input.h>
 #include <cstdint>
+#include <list>
 #include <map>
+#include <vector>
 
 #include "base/macros.h"
-#include "ui/events/ozone/gamepad/gamepad_mapping.h"
+#include "ui/events/ozone/evdev/event_device_info.h"
+#include "ui/events/ozone/gamepad/static_gamepad_mapping.h"
 #include "ui/events/ozone/gamepad/webgamepad_constants.h"
 
 namespace ui {
 
-// KeyMap maps evdev key code to web gamepad code.
-struct KeyMapEntry {
-  uint16_t evdev_code;
-  uint16_t mapped_code;
-};
-
-// AbsMap maps evdev abs code to web gamepad (type, code).
-struct AbsMapEntry {
-  uint16_t evdev_code;
-  GamepadEventType mapped_type;
-  uint16_t mapped_code;
-};
-
-using KeyMapType = const KeyMapEntry[];
-using AbsMapType = const AbsMapEntry[];
-
-#define TO_BTN(code, mapped_code) \
-  { code, GamepadEventType::BUTTON, mapped_code }
-
-#define TO_ABS(code, mapped_code) \
-  { code, GamepadEventType::AXIS, mapped_code }
+typedef bool (*GamepadMapperFunction)(uint16_t key,
+                                      uint16_t code,
+                                      GamepadEventType* mapped_type,
+                                      uint16_t* mapped_code);
 
 #define DO_MAPPING                                                   \
   DoGamepadMapping(key_mapping, arraysize(key_mapping), abs_mapping, \
                    arraysize(abs_mapping), type, code, mapped_type,  \
                    mapped_code)
 
 bool DoGamepadMapping(const KeyMapEntry* key_mapping,
                       size_t key_map_size,
                       const AbsMapEntry* abs_mapping,
                       size_t abs_map_size,
@@ skipping 149 matching lines @@
 
 bool ADT1Mapper(uint16_t type,
                 uint16_t code,
                 GamepadEventType* mapped_type,
                 uint16_t* mapped_code) {
   static const KeyMapType key_mapping = {
       {BTN_A, WG_BUTTON_A},           {BTN_B, WG_BUTTON_B},
       {BTN_X, WG_BUTTON_X},           {BTN_Y, WG_BUTTON_Y},
       {BTN_TL, WG_BUTTON_L1},         {BTN_TR, WG_BUTTON_R1},
       {BTN_THUMBL, WG_BUTTON_THUMBL}, {BTN_THUMBR, WG_BUTTON_THUMBR},
-      {BTN_MODE, WG_BUTTON_START},    {KEY_BACK, WG_BUTTON_SELECT},
-      {KEY_HOMEPAGE, WG_BUTTON_MODE}};
+      {BTN_MODE, WG_BUTTON_MODE},     {KEY_BACK, WG_BUTTON_SELECT},
+      {KEY_HOMEPAGE, WG_BUTTON_START}};
 
   static const AbsMapType abs_mapping = {
       TO_ABS(ABS_X, WG_ABS_X),         TO_ABS(ABS_Y, WG_ABS_Y),
       TO_ABS(ABS_Z, WG_ABS_RX),        TO_ABS(ABS_RZ, WG_ABS_RY),
       TO_BTN(ABS_BRAKE, WG_BUTTON_LT), TO_BTN(ABS_GAS, WG_BUTTON_RT),
       TO_BTN(ABS_HAT0X, kHAT_X),       TO_BTN(ABS_HAT0Y, kHAT_Y)};
   return DO_MAPPING;
 }
 
 bool Vendor_1d79Product_0009Mapper(uint16_t type,
@@ skipping 167 matching lines @@
       TO_ABS(ABS_RX, WG_ABS_RX),       TO_ABS(ABS_RY, WG_ABS_RY),
       TO_ABS(ABS_Z, WG_ABS_RX),        TO_ABS(ABS_RZ, WG_ABS_RY),
       TO_BTN(ABS_BRAKE, WG_BUTTON_LT), TO_BTN(ABS_GAS, WG_BUTTON_RT),
       TO_BTN(ABS_HAT0X, kHAT_X),       TO_BTN(ABS_HAT0Y, kHAT_Y)};
   return DO_MAPPING;
 }
 
 static const struct MappingData {
   uint16_t vendor_id;
   uint16_t product_id;
-  GamepadMapper mapper;
+  GamepadMapperFunction mapper;
 } AvailableMappings[] = {
     // Xbox style gamepad.
     {0x045e, 0x028e, XInputStyleMapper},  // Xbox 360 wired.
     {0x045e, 0x028f, XInputStyleMapper},  // Xbox 360 wireless.
     {0x045e, 0x02a1, XInputStyleMapper},  // Xbox 360 wireless.
     {0x045e, 0x02d1, XInputStyleMapper},  // Xbox one wired.
     {0x045e, 0x02dd, XInputStyleMapper},  // Xbox one wired (2015 fw).
     {0x045e, 0x02e3, XInputStyleMapper},  // Xbox elite wired.
     {0x045e, 0x02ea, XInputStyleMapper},  // Xbox one s (usb).
     {0x045e, 0x0719, XInputStyleMapper},  // Xbox 360 wireless.
@@ skipping 23 matching lines @@
      Vendor_1d79Product_0009Mapper},  // Nyko playpad / Playpad pro.
     {0x046d, 0xb501, Vendor_046dProduct_b501Mapper},  // Logitech redhawk.
     // Logitech dual action controller.
     {0x046d, 0xc216, Vendor_046dProduct_c216Mapper},
     // Logitech cordless rumblepad2.
     {0x046d, 0xc219, Vendor_046dProduct_c219Mapper},
     {0x1038, 0x1412, Vendor_1038Product_1412Mapper},  // Steelseries free.
     // Razer onza tournment edition.
     {0x1689, 0xfd00, Vendor_1689Product_fd00Mapper}};
 
-GamepadMapper GetGamepadMapper(uint16_t vendor_id, uint16_t product_id) {
+class StaticGamepadMapper : public GamepadMapper {
+ public:
+  StaticGamepadMapper(GamepadMapperFunction fp) : mapper_fp_(fp) {}
+
+  bool operator()(uint16_t type,
+                  uint16_t code,
+                  GamepadEventType* mapped_type,
+                  uint16_t* mapped_code) override {
+    return mapper_fp_(type, code, mapped_type, mapped_code);
+  };
+
+ private:
+  GamepadMapperFunction mapper_fp_;
+};
+
+GamepadMapper* GetStaticGamepadMapper(uint16_t vendor_id, uint16_t product_id) {
   for (size_t i = 0; i < arraysize(AvailableMappings); i++) {
     if (AvailableMappings[i].vendor_id == vendor_id &&
         AvailableMappings[i].product_id == product_id) {
-      return AvailableMappings[i].mapper;
+      return new StaticGamepadMapper(AvailableMappings[i].mapper);
     }
   }
-  return GenericMapper;
+  return nullptr;
 }
 
 }  // namespace ui