Added patches for hidapi modifications

This allows tracking what modifications were made to the upstream code.

2 files changed, 113 insertions, 0 deletions

diff --git a/Externals/hidapi/applied_patches/0001-macOS-Use-unique-IDs-for-HID-paths.patch b/Externals/hidapi/applied_patches/0001-macOS-Use-unique-IDs-for-HID-paths.patch
new file mode 100644
index 0000000000..a7cbac9866
--- /dev/null
+++ b/Externals/hidapi/applied_patches/0001-macOS-Use-unique-IDs-for-HID-paths.patch
@@ -0,0 +1,62 @@
+From 8d5810a1038347b9e56d41334d3f83641c913b3d Mon Sep 17 00:00:00 2001
+From: Vincent Duvert <vincent@duvert.net>
+Date: Sun, 7 Jan 2018 11:00:01 +0100
+Subject: [PATCH 1/2] macOS: Use unique IDs for HID paths
+
+If available, use the system-generated unique ID for HID device paths instead of a transport/vid/pid/location tuple.
+The Mayflash Dolphinbar registers four HID devices (regardless of the number of connected Wiimotes) which had the same path with the previous path building method, causing a bit of confusion when detecting and connecting to Wiimotes.
+The unique IDs do not change if the computer is suspended and resumed, but do change if the HID device is unplugged/replugged.
+---
+ Externals/hidapi/mac/hid.c | 21 ++++++++++++++++-----
+ 1 file changed, 16 insertions(+), 5 deletions(-)
+
+diff --git a/Externals/hidapi/mac/hid.c b/Externals/hidapi/mac/hid.c
+index 38bb635af2..46a97886d7 100644
+--- a/Externals/hidapi/mac/hid.c
++++ b/Externals/hidapi/mac/hid.c
+@@ -217,6 +217,11 @@ static int32_t get_location_id(IOHIDDeviceRef device)
+ 	return get_int_property(device, CFSTR(kIOHIDLocationIDKey));
+ }
+ 
++static int32_t get_unique_id(IOHIDDeviceRef device)
++{
++	return get_int_property(device, CFSTR(kIOHIDUniqueIDKey));
++}
++
+ static int32_t get_max_report_length(IOHIDDeviceRef device)
+ {
+ 	return get_int_property(device, CFSTR(kIOHIDMaxInputReportSizeKey));
+@@ -337,6 +342,7 @@ static int make_path(IOHIDDeviceRef device, char *buf, size_t len)
+ 	unsigned short vid, pid;
+ 	char transport[32];
+ 	int32_t location;
++	int32_t unique_id;
+ 
+ 	buf[0] = '\0';
+ 
+@@ -347,12 +353,17 @@ static int make_path(IOHIDDeviceRef device, char *buf, size_t len)
+ 	if (!res)
+ 		return -1;
+ 
+-	location = get_location_id(device);
+-	vid = get_vendor_id(device);
+-	pid = get_product_id(device);
++	unique_id = get_unique_id(device);
++	if (unique_id != 0) {
++		res = snprintf(buf, len, "id_%x", unique_id);
++	} else {
++		location = get_location_id(device);
++		vid = get_vendor_id(device);
++		pid = get_product_id(device);
+ 
+-	res = snprintf(buf, len, "%s_%04hx_%04hx_%x",
+-                       transport, vid, pid, location);
++		res = snprintf(buf, len, "%s_%04hx_%04hx_%x",
++	                       transport, vid, pid, location);
++	}
+ 
+ 
+ 	buf[len-1] = '\0';
+-- 
+2.14.3 (Apple Git-98)
+
diff --git a/Externals/hidapi/applied_patches/0002-macOS-Add-errno-setting-in-set_report-HID.patch b/Externals/hidapi/applied_patches/0002-macOS-Add-errno-setting-in-set_report-HID.patch
new file mode 100644
index 0000000000..87a928f203
--- /dev/null
+++ b/Externals/hidapi/applied_patches/0002-macOS-Add-errno-setting-in-set_report-HID.patch
@@ -0,0 +1,51 @@
+From 3abc288e02089b3143547177e027d3820e5d7e59 Mon Sep 17 00:00:00 2001
+From: Vincent Duvert <vincent@duvert.net>
+Date: Sun, 7 Jan 2018 11:14:51 +0100
+Subject: [PATCH 2/2] macOS: Add errno setting in set_report (HID)
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+IsDeviceUsable in IOhidapi.cpp uses errno to detect if hid_write failed because of an unconnected Wiimote on a Dolphinbar (it expects errno == EPIPE in this case).
+macOS’s implementation of hid_write detected this specific error (IOHIDDeviceSetReport returns kUSBHostReturnPipeStalled) but didn’t set errno so the check failed.
+This add errno assignment to failure cases of macOS’s hid_write.
+---
+ Externals/hidapi/mac/hid.c | 13 ++++++++++---
+ 1 file changed, 10 insertions(+), 3 deletions(-)
+
+diff --git a/Externals/hidapi/mac/hid.c b/Externals/hidapi/mac/hid.c
+index 46a97886d7..70b615d40d 100644
+--- a/Externals/hidapi/mac/hid.c
++++ b/Externals/hidapi/mac/hid.c
+@@ -773,8 +773,10 @@ static int set_report(hid_device *dev, IOHIDReportType type, const unsigned char
+ 	IOReturn res;
+ 
+ 	/* Return if the device has been disconnected. */
+-	if (dev->disconnected)
++	if (dev->disconnected) {
++		errno = ENODEV;
+ 		return -1;
++	}
+ 
+ 	if (data[0] == 0x0) {
+ 		/* Not using numbered Reports.
+@@ -797,9 +799,14 @@ static int set_report(hid_device *dev, IOHIDReportType type, const unsigned char
+ 
+ 		if (res == kIOReturnSuccess) {
+ 			return length;
+-		}
+-		else
++		} else if (res == (IOReturn)0xe0005000) {
++		  /* Kernel.framework's IOUSBHostFamily.h defines this error as kUSBHostReturnPipeStalled */
++			errno = EPIPE;
++			return -1;
++		} else {
++			errno = EBUSY;
+ 			return -1;
++		}
+ 	}
+ 
+ 	return -1;
+-- 
+2.14.3 (Apple Git-98)
+