From 4a0ba9800dd8c3ae9014dca62f2bc99a769779b8 Mon Sep 17 00:00:00 2001
From: Edgar Simo <bobbens@gmail.com>
Date: Sun, 10 Aug 2008 19:45:38 +0000
Subject: [PATCH] First draft of darwin haptic<->joystick stuff.

---
 src/haptic/darwin/SDL_syshaptic.c       |  7 ++++++-
 src/joystick/darwin/SDL_sysjoystick.c   | 18 ++++++++++++++++--
 src/joystick/darwin/SDL_sysjoystick_c.h |  1 +
 3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/src/haptic/darwin/SDL_syshaptic.c b/src/haptic/darwin/SDL_syshaptic.c
index f8a0ecb59..8fb9c8628 100644
--- a/src/haptic/darwin/SDL_syshaptic.c
+++ b/src/haptic/darwin/SDL_syshaptic.c
@@ -447,6 +447,8 @@ SDL_SYS_HapticMouse(void)
 int
 SDL_SYS_JoystickIsHaptic(SDL_Joystick * joystick)
 {
+   if (joystick->hwdata->ffservice != 0)
+      return SDL_TRUE;
    return SDL_FALSE;
 }
 
@@ -457,6 +459,8 @@ SDL_SYS_JoystickIsHaptic(SDL_Joystick * joystick)
 int
 SDL_SYS_JoystickSameHaptic(SDL_Haptic * haptic, SDL_Joystick * joystick)
 {
+   if (IOObjectIsEqualTo(haptic->hwdata->device, joystick->hwdata->ffservice))
+      return 1;
    return 0;
 }
 
@@ -467,7 +471,8 @@ SDL_SYS_JoystickSameHaptic(SDL_Haptic * haptic, SDL_Joystick * joystick)
 int
 SDL_SYS_HapticOpenFromJoystick(SDL_Haptic * haptic, SDL_Joystick * joystick)
 {
-   return -1;
+   return SDL_SYS_HapticOpenFromService(haptic,
+                joystick->hwdata->ffservice);
 }
 
 
diff --git a/src/joystick/darwin/SDL_sysjoystick.c b/src/joystick/darwin/SDL_sysjoystick.c
index 8f498e82e..4429dd176 100644
--- a/src/joystick/darwin/SDL_sysjoystick.c
+++ b/src/joystick/darwin/SDL_sysjoystick.c
@@ -545,6 +545,12 @@ HIDDisposeDevice(recDevice ** ppDevice)
         /* save next device prior to disposing of this device */
         pDeviceNext = (*ppDevice)->pNext;
 
+        /* free posible io_service_t */
+        if ((*ppDevice)->ffservice) {
+            IOObjectRelease((*ppDevice)->ffservice);
+            (*ppDevice)->ffservice = 0;
+        }
+
         /* free element lists */
         HIDDisposeElementList(&(*ppDevice)->firstAxis);
         HIDDisposeElementList(&(*ppDevice)->firstButton);
@@ -637,8 +643,16 @@ SDL_SYS_JoystickInit(void)
         if (!device)
             continue;
 
-        /* dump device object, it is no longer needed */
-        result = IOObjectRelease(ioHIDDeviceObject);
+        /* We have to do some storage of the io_service_t for
+         * SDL_HapticOpenFromJoystick */
+        if (FFIsForceFeedback(device) == FF_OK) {
+           device->ffservice = ioHIDDeviceObject;
+        }
+        else {
+           device->ffservice = 0;
+           /* dump device object, it is no longer needed */
+           result = IOObjectRelease(ioHIDDeviceObject);
+        }
 /*		if (KERN_SUCCESS != result)
 			HIDReportErrorNum ("IOObjectRelease error with ioHIDDeviceObject.", result);
 */
diff --git a/src/joystick/darwin/SDL_sysjoystick_c.h b/src/joystick/darwin/SDL_sysjoystick_c.h
index 17b8c4631..809f8b626 100644
--- a/src/joystick/darwin/SDL_sysjoystick_c.h
+++ b/src/joystick/darwin/SDL_sysjoystick_c.h
@@ -60,6 +60,7 @@ typedef struct recElement recElement;
 
 struct joystick_hwdata
 {
+    io_service_t ffservice;             /* Interface for force feedback, 0 = no ff */
     IOHIDDeviceInterface **interface;   /* interface to device, NULL = no interface */
 
     char product[256];          /* name of product */