emscripten: Patched to compile with new joystick interfaces.

libsdl-org · Aug 10, 2018 · b692c35 · b692c35
1 parent 941f8ec
commit b692c35
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Showing 3 changed files with 66 additions and 53 deletions.
diff --git a/src/joystick/SDL_joystick.c b/src/joystick/SDL_joystick.c
@@ -61,6 +61,9 @@ static SDL_JoystickDriver *SDL_joystick_drivers[] = {
 #ifdef SDL_JOYSTICK_ANDROID
     &SDL_ANDROID_JoystickDriver,
 #endif
+#ifdef SDL_JOYSTICK_EMSCRIPTEN
+    &SDL_EMSCRIPTEN_JoystickDriver,
+#endif
 #ifdef SDL_JOYSTICK_HIDAPI
     &SDL_HIDAPI_JoystickDriver,
 #endif

diff --git a/src/joystick/SDL_sysjoystick.h b/src/joystick/SDL_sysjoystick.h
@@ -140,6 +140,7 @@ typedef struct _SDL_JoystickDriver
 extern SDL_JoystickDriver SDL_ANDROID_JoystickDriver;
 extern SDL_JoystickDriver SDL_DARWIN_JoystickDriver;
 extern SDL_JoystickDriver SDL_DUMMY_JoystickDriver;
+extern SDL_JoystickDriver SDL_EMSCRIPTEN_JoystickDriver;
 extern SDL_JoystickDriver SDL_HIDAPI_JoystickDriver;
 extern SDL_JoystickDriver SDL_IOS_JoystickDriver;
 extern SDL_JoystickDriver SDL_LINUX_JoystickDriver;

diff --git a/src/joystick/emscripten/SDL_sysjoystick.c b/src/joystick/emscripten/SDL_sysjoystick.c
@@ -156,11 +156,34 @@ Emscripten_JoyStickDisconnected(int eventType, const EmscriptenGamepadEvent *gam
     return 1;
 }
 
+/* Function to perform any system-specific joystick related cleanup */
+static void
+EMSCRIPTEN_JoystickQuit(void)
+{
+    SDL_joylist_item *item = NULL;
+    SDL_joylist_item *next = NULL;
+
+    for (item = SDL_joylist; item; item = next) {
+        next = item->next;
+        SDL_free(item->mapping);
+        SDL_free(item->name);
+        SDL_free(item);
+    }
+
+    SDL_joylist = SDL_joylist_tail = NULL;
+
+    numjoysticks = 0;
+    instance_counter = 0;
+
+    emscripten_set_gamepadconnected_callback(NULL, 0, NULL);
+    emscripten_set_gamepaddisconnected_callback(NULL, 0, NULL);
+}
+
 /* Function to scan the system for joysticks.
  * It should return 0, or -1 on an unrecoverable fatal error.
  */
-int
-SDL_SYS_JoystickInit(void)
+static int
+EMSCRIPTEN_JoystickInit(void)
 {
     int retval, i, numjs;
     EmscriptenGamepadEvent gamepadState;
@@ -190,15 +213,15 @@ SDL_SYS_JoystickInit(void)
                                                       Emscripten_JoyStickConnected);
 
     if(retval != EMSCRIPTEN_RESULT_SUCCESS) {
-        SDL_SYS_JoystickQuit();
+        EMSCRIPTEN_JoystickQuit();
         return SDL_SetError("Could not set gamepad connect callback");
     }
 
     retval = emscripten_set_gamepaddisconnected_callback(NULL,
                                                          0,
                                                          Emscripten_JoyStickDisconnected);
     if(retval != EMSCRIPTEN_RESULT_SUCCESS) {
-        SDL_SYS_JoystickQuit();
+        EMSCRIPTEN_JoystickQuit();
         return SDL_SetError("Could not set gamepad disconnect callback");
     }
 
@@ -239,26 +262,25 @@ JoystickByIndex(int index)
     return item;
 }
 
-int
-SDL_SYS_NumJoysticks(void)
+static int
+EMSCRIPTEN_JoystickGetCount(void)
 {
     return numjoysticks;
 }
 
-void
-SDL_SYS_JoystickDetect(void)
+static void
+EMSCRIPTEN_JoystickDetect(void)
 {
 }
 
-/* Function to get the device-dependent name of a joystick */
-const char *
-SDL_SYS_JoystickNameForDeviceIndex(int device_index)
+static const char *
+EMSCRIPTEN_JoystickGetDeviceName(int device_index)
 {
     return JoystickByDeviceIndex(device_index)->name;
 }
 
-/* Function to perform the mapping from device index to the instance id for this index */
-SDL_JoystickID SDL_SYS_GetInstanceIdOfDeviceIndex(int device_index)
+static SDL_JoystickID
+EMSCRIPTEN_JoystickGetDeviceInstanceID(int device_index)
 {
     return JoystickByDeviceIndex(device_index)->device_instance;
 }
@@ -268,8 +290,8 @@ SDL_JoystickID SDL_SYS_GetInstanceIdOfDeviceIndex(int device_index)
    This should fill the nbuttons and naxes fields of the joystick structure.
    It returns 0, or -1 if there is an error.
  */
-int
-SDL_SYS_JoystickOpen(SDL_Joystick * joystick, int device_index)
+static int
+EMSCRIPTEN_JoystickOpen(SDL_Joystick * joystick, int device_index)
 {
     SDL_joylist_item *item = JoystickByDeviceIndex(device_index);
 
@@ -300,8 +322,8 @@ SDL_SYS_JoystickOpen(SDL_Joystick * joystick, int device_index)
  * but instead should call SDL_PrivateJoystick*() to deliver events
  * and update joystick device state.
  */
-void
-SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
+static void
+EMSCRIPTEN_JoystickUpdate(SDL_Joystick * joystick)
 {
     EmscriptenGamepadEvent gamepadState;
     SDL_joylist_item *item = (SDL_joylist_item *) joystick->hwdata;
@@ -340,58 +362,45 @@ SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
 }
 
 /* Function to close a joystick after use */
-void
-SDL_SYS_JoystickClose(SDL_Joystick * joystick)
+static void
+EMSCRIPTEN_JoystickClose(SDL_Joystick * joystick)
 {
     SDL_joylist_item *item = (SDL_joylist_item *) joystick->hwdata;
     if (item) {
         item->joystick = NULL;
     }
 }
 
-/* Function to perform any system-specific joystick related cleanup */
-void
-SDL_SYS_JoystickQuit(void)
-{
-    SDL_joylist_item *item = NULL;
-    SDL_joylist_item *next = NULL;
-
-    for (item = SDL_joylist; item; item = next) {
-        next = item->next;
-        SDL_free(item->mapping);
-        SDL_free(item->name);
-        SDL_free(item);
-    }
-
-    SDL_joylist = SDL_joylist_tail = NULL;
-
-    numjoysticks = 0;
-    instance_counter = 0;
-
-    emscripten_set_gamepadconnected_callback(NULL, 0, NULL);
-    emscripten_set_gamepaddisconnected_callback(NULL, 0, NULL);
-}
-
-SDL_JoystickGUID
-SDL_SYS_JoystickGetDeviceGUID(int device_index)
+static SDL_JoystickGUID
+EMSCRIPTEN_JoystickGetDeviceGUID(int device_index)
 {
     SDL_JoystickGUID guid;
     /* the GUID is just the first 16 chars of the name for now */
-    const char *name = SDL_SYS_JoystickNameForDeviceIndex(device_index);
+    const char *name = EMSCRIPTEN_JoystickGetDeviceName(device_index);
     SDL_zero(guid);
     SDL_memcpy(&guid, name, SDL_min(sizeof(guid), SDL_strlen(name)));
     return guid;
 }
 
-SDL_JoystickGUID
-SDL_SYS_JoystickGetGUID(SDL_Joystick * joystick)
+static int
+EMSCRIPTEN_JoystickRumble(SDL_Joystick * joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms)
 {
-    SDL_JoystickGUID guid;
-    /* the GUID is just the first 16 chars of the name for now */
-    const char *name = joystick->name;
-    SDL_zero(guid);
-    SDL_memcpy(&guid, name, SDL_min(sizeof(guid), SDL_strlen(name)));
-    return guid;
+    return SDL_Unsupported();
 }
 
+SDL_JoystickDriver SDL_EMSCRIPTEN_JoystickDriver =
+{
+    EMSCRIPTEN_JoystickInit,
+    EMSCRIPTEN_JoystickGetCount,
+    EMSCRIPTEN_JoystickDetect,
+    EMSCRIPTEN_JoystickGetDeviceName,
+    EMSCRIPTEN_JoystickGetDeviceGUID,
+    EMSCRIPTEN_JoystickGetDeviceInstanceID,
+    EMSCRIPTEN_JoystickOpen,
+    EMSCRIPTEN_JoystickRumble,
+    EMSCRIPTEN_JoystickUpdate,
+    EMSCRIPTEN_JoystickClose,
+    EMSCRIPTEN_JoystickQuit,
+};
+
 #endif /* SDL_JOYSTICK_EMSCRIPTEN */