Merge pull request #313 from astojilj/gamepad

XWALK-4992 [windows] App does not support gamepad

Author: Raphael Kubo da Costa

chrome/installer/mini_installer/chrome.release

@@ -39,7 +39,6 @@ natives_blob.bin: %(VersionDir)s\
 resources.pak: %(VersionDir)s\
 snapshot_blob.bin: %(VersionDir)s\
 syzyasan_rtl.dll: %(VersionDir)s\
-xinput1_3.dll: %(VersionDir)s\
 #
 # Sub directories living in the version dir
 #

chrome/tools/build/win/FILES.cfg

@@ -382,11 +382,6 @@ FILES = [
     'buildtype': ['dev', 'official'],
     'filegroup': ['default', 'symsrc'],
   },
-  # XInput files:
-  {
-    'filename': 'xinput1_3.dll',
-    'buildtype': ['dev', 'official'],
-  },
   # Native Client plugin files:
   {
     'filename': 'nacl_irt_x86_32.nexe',

content/browser/gamepad/gamepad_platform_data_fetcher_win.cc

@@ -50,10 +50,22 @@ const WebUChar* const GamepadSubTypeName(BYTE sub_type) {
   }
 }
 
+const WebUChar* XInputDllFileName() {
+  // Xinput.h defines filenames on different versions.
+  if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
+    return FILE_PATH_LITERAL("xinput1_4.dll");
+  } else if (base::win::GetVersion() >= base::win::VERSION_WIN7) {
+    return FILE_PATH_LITERAL("xinput9_1_0.dll");
+  } else {
+    // Vista and before use DirectX redistributable.
+    return FILE_PATH_LITERAL("xinput1_3.dll");
+  }
+}
+
 }  // namespace
 
 GamepadPlatformDataFetcherWin::GamepadPlatformDataFetcherWin()
-    : xinput_dll_(base::FilePath(FILE_PATH_LITERAL("xinput1_3.dll"))),
+    : xinput_dll_(base::FilePath(XInputDllFileName())),
       xinput_available_(GetXInputDllFunctions()) {
   for (size_t i = 0; i < WebGamepads::itemsLengthCap; ++i) {
     platform_pad_state_[i].status = DISCONNECTED;
@@ -314,10 +326,8 @@ void GamepadPlatformDataFetcherWin::GetRawInputPadData(
 bool GamepadPlatformDataFetcherWin::GetXInputDllFunctions() {
   xinput_get_capabilities_ = NULL;
   xinput_get_state_ = NULL;
-  xinput_enable_ = reinterpret_cast<XInputEnableFunc>(
+  XInputEnableFunc xinput_enable = reinterpret_cast<XInputEnableFunc>(
       xinput_dll_.GetFunctionPointer("XInputEnable"));
-  if (!xinput_enable_)
-    return false;
   xinput_get_capabilities_ = reinterpret_cast<XInputGetCapabilitiesFunc>(
       xinput_dll_.GetFunctionPointer("XInputGetCapabilities"));
   if (!xinput_get_capabilities_)
@@ -326,7 +336,10 @@ bool GamepadPlatformDataFetcherWin::GetXInputDllFunctions() {
       xinput_dll_.GetFunctionPointer("XInputGetState"));
   if (!xinput_get_state_)
     return false;
-  xinput_enable_(true);
+  if (xinput_enable) {
+    // XInputEnable is unavailable before Win8 and deprecated in Win10.
+    xinput_enable(true);
+  }
   return true;
 }
 

content/browser/gamepad/gamepad_platform_data_fetcher_win.h

@@ -49,10 +49,10 @@ class GamepadPlatformDataFetcherWin : public GamepadDataFetcher {
   typedef DWORD (WINAPI *XInputGetStateFunc)(
       DWORD dwUserIndex, XINPUT_STATE* pState);
 
-  // Get functions from dynamically loaded xinput1_3.dll. We don't use
-  // DELAYLOAD because the import library for Win8 SDK pulls xinput1_4 which
-  // isn't redistributable. Returns true if loading was successful. We include
-  // xinput1_3.dll with Chrome.
+  // Get functions from dynamically loaded xinputX_Y.dll. We don't use
+  // DELAYLOAD because XInputEnable is not available on all versions (it is
+  // marked as deprecated on Win10) and thus the symbol is resolved in runtime.
+  // Returns true if loading was successful.
   bool GetXInputDllFunctions();
 
   // Scan for connected XInput and DirectInput gamepads.
@@ -71,7 +71,6 @@ class GamepadPlatformDataFetcherWin : public GamepadDataFetcher {
 
   // Function pointers to XInput functionality, retrieved in
   // |GetXinputDllFunctions|.
-  XInputEnableFunc xinput_enable_;
   XInputGetCapabilitiesFunc xinput_get_capabilities_;
   XInputGetStateFunc xinput_get_state_;
 

content/content_common.gypi

@@ -1042,30 +1042,6 @@
         '<(DEPTH)/third_party/khronos',
       ],
     }],
-    ['OS=="win" and directxsdk_exists=="True"', {
-      'actions': [
-      {
-        'action_name': 'extract_xinput',
-        'variables': {
-          'input': 'APR2007_xinput_<(winsdk_arch).cab',
-          'output': 'xinput1_3.dll',
-        },
-        'inputs': [
-          '../third_party/directxsdk/files/Redist/<(input)',
-        ],
-        'outputs': [
-          '<(PRODUCT_DIR)/<(output)',
-        ],
-        'action': [
-          'python',
-        '../build/extract_from_cab.py',
-        '..\\third_party\\directxsdk\\files\\Redist\\<(input)',
-        '<(output)',
-        '<(PRODUCT_DIR)',
-        ],
-      },
-     ]
-    }],
     ['use_seccomp_bpf==0', {
       'sources!': [
         'common/sandbox_linux/android/sandbox_bpf_base_policy_android.cc',

tools/checkbins/checkbins.py

@@ -30,8 +30,7 @@
 # Windows guru for advice.
 EXCLUDED_FILES = ['chrome_frame_mini_installer.exe',
                   'mini_installer.exe',
-                  'wow_helper.exe',
-                  'xinput1_3.dll' # Microsoft DirectX redistributable.
+                  'wow_helper.exe'
                   ]
 
 def IsPEFile(path):