Add generic mapping for gamepad

ui/events/ozone/gamepad/static_gamepad_mapping.cc

Index: ui/events/ozone/gamepad/static_gamepad_mapping.cc
diff --git a/ui/events/ozone/gamepad/gamepad_mapping.cc b/ui/events/ozone/gamepad/static_gamepad_mapping.cc
similarity index 85%
copy from ui/events/ozone/gamepad/gamepad_mapping.cc
copy to ui/events/ozone/gamepad/static_gamepad_mapping.cc
index be20d008c712826287248f10aaa5a1e14d707d5f..2c01d407bbc37c1ae14eeee7f12e2eddb5d0a914 100644
--- a/ui/events/ozone/gamepad/gamepad_mapping.cc
+++ b/ui/events/ozone/gamepad/static_gamepad_mapping.cc
@@ -4,35 +4,21 @@
 
 #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, \
@@ -202,8 +188,8 @@ bool ADT1Mapper(uint16_t type,
       {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),
@@ -355,43 +341,49 @@ bool Vendor_1689Product_fd00Mapper(uint16_t type,
   return DO_MAPPING;
 }
 
-bool GenericMapper(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_TL2, WG_BUTTON_LT},
-                                         {BTN_TR2, WG_BUTTON_RT},
-                                         {BTN_THUMBL, WG_BUTTON_THUMBL},
-                                         {BTN_THUMBR, WG_BUTTON_THUMBR},
-                                         {KEY_BACK, WG_BUTTON_SELECT},
-                                         {KEY_HOMEPAGE, WG_BUTTON_MODE},
-                                         {KEY_UP, WG_BUTTON_DPAD_UP},
-                                         {KEY_DOWN, WG_BUTTON_DPAD_DOWN},
-                                         {KEY_LEFT, WG_BUTTON_DPAD_LEFT},
-                                         {KEY_RIGHT, WG_BUTTON_DPAD_RIGHT},
-                                         {BTN_SELECT, WG_BUTTON_SELECT},
-                                         {BTN_START, WG_BUTTON_START},
-                                         {BTN_MODE, WG_BUTTON_MODE}};
+bool JoydevLikeMapper(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_C, WG_BUTTON_X},           {BTN_X, WG_BUTTON_Y},
+      {BTN_Y, WG_BUTTON_L1},          {BTN_Z, WG_BUTTON_R1},
+      {BTN_TL, WG_BUTTON_LT},         {BTN_TR, WG_BUTTON_RT},
+      {BTN_TL2, WG_BUTTON_SELECT},    {BTN_TR2, WG_BUTTON_START},
+      {BTN_SELECT, WG_BUTTON_THUMBL}, {BTN_START, WG_BUTTON_THUMBR}};
 
   static const AbsMapType abs_mapping = {
-      TO_ABS(ABS_X, WG_ABS_X),         TO_ABS(ABS_Y, WG_ABS_Y),
-      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)};
+      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_HAT0X, kHAT_X), TO_BTN(ABS_HAT0Y, kHAT_Y)};
+  return DO_MAPPING;
+}
+
+bool DualShock4(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_C, WG_BUTTON_X},           {BTN_X, WG_BUTTON_Y},
+      {BTN_Y, WG_BUTTON_L1},          {BTN_Z, WG_BUTTON_R1},
+      {BTN_TL, WG_BUTTON_LT},         {BTN_TR, WG_BUTTON_RT},
+      {BTN_TL2, WG_BUTTON_SELECT},    {BTN_TR2, WG_BUTTON_START},
+      {BTN_SELECT, WG_BUTTON_THUMBL}, {BTN_START, WG_BUTTON_THUMBR}};
+
+  static const AbsMapType abs_mapping = {
+      TO_ABS(ABS_X, WG_ABS_X),      TO_ABS(ABS_Y, WG_ABS_Y),
+      TO_ABS(ABS_RX, WG_BUTTON_LT), TO_ABS(ABS_RY, WG_BUTTON_RT),
+      TO_ABS(ABS_Z, WG_ABS_RX),     TO_ABS(ABS_RZ, WG_ABS_RY),
+      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.
@@ -415,6 +407,7 @@ static const struct MappingData {
     {0x1689, 0xfe00, XInputStyleMapper},  // Razer sabertooth elite.
     // Sony gamepads.
     {0x054c, 0x0268, PlaystationSixAxisMapper},  // Playstation 3.
+    {0x054c, 0x05c4, DualShock4},                // Dualshock 4.
     // NES style gamepad.
     {0x0583, 0x2060, IBuffalocClassicMapper},  // iBuffalo Classic.
     {0x0079, 0x0011, ClassicNESMapper},        // Classic NES controller.
@@ -433,16 +426,33 @@ static const struct MappingData {
     {0x046d, 0xc219, Vendor_046dProduct_c219Mapper},
     {0x1038, 0x1412, Vendor_1038Product_1412Mapper},  // Steelseries free.
     // Razer onza tournment edition.
-    {0x1689, 0xfd00, Vendor_1689Product_fd00Mapper}};
+    {0x1689, 0xfd00, Vendor_1689Product_fd00Mapper},
+    {0x11c5, 0x5506, JoydevLikeMapper}  // HJC Game ZD-V
+};
+
+class StaticGamepadMapper : public GamepadMapper {
+ public:
+  StaticGamepadMapper(GamepadMapperFunction fp) : mapper_fp_(fp) {}
+
+  bool Map(uint16_t type,
+           uint16_t code,
+           GamepadEventType* mapped_type,
+           uint16_t* mapped_code) const override {
+    return mapper_fp_(type, code, mapped_type, mapped_code);
+  };
+
+ private:
+  GamepadMapperFunction mapper_fp_;
+};
 
-GamepadMapper GetGamepadMapper(uint16_t vendor_id, uint16_t product_id) {
+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