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RetroArch/input/apple_joypad_hid.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2013-2014 - Jason Fetters
* Copyright (C) 2011-2014 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <IOKit/hid/IOHIDManager.h>
#include <IOKit/hid/IOHIDKeys.h>
#include "apple_input.h"
#include "input_autodetect.h"
#include "input_common.h"
#include "../general.h"
struct pad_connection
{
int v_id;
int p_id;
uint32_t slot;
IOHIDDeviceRef device_handle;
uint8_t data[2048];
};
static joypad_connection_t *slots;
static IOHIDManagerRef g_hid_manager;
static void hid_pad_connection_send_control(void *data, uint8_t* data_buf, size_t size)
{
struct pad_connection* connection = (struct pad_connection*)data;
if (connection)
IOHIDDeviceSetReport(connection->device_handle,
kIOHIDReportTypeOutput, 0x01, data_buf + 1, size - 1);
}
/* NOTE: I pieced this together through trial and error,
* any corrections are welcome. */
static void hid_device_input_callback(void* context, IOReturn result,
void* sender, IOHIDValueRef value)
{
apple_input_data_t *apple = (apple_input_data_t*)driver.input_data;
struct pad_connection* connection = (struct pad_connection*)context;
IOHIDElementRef element = IOHIDValueGetElement(value);
uint32_t type = IOHIDElementGetType(element);
uint32_t page = IOHIDElementGetUsagePage(element);
uint32_t use = IOHIDElementGetUsage(element);
/* Joystick handler.
* TODO: Can GamePad work the same? */
if (
(type == kIOHIDElementTypeInput_Misc) ||
(type == kIOHIDElementTypeInput_Button) ||
(type == kIOHIDElementTypeInput_Axis)
)
{
switch (page)
{
case kHIDPage_GenericDesktop:
switch (type)
{
case kIOHIDElementTypeInput_Misc:
switch (use)
{
case kHIDUsage_GD_Hatswitch:
break;
default:
{
static const uint32_t axis_use_ids[4] = { 48, 49, 50, 53 };
int i;
for (i = 0; i < 4; i ++)
{
CFIndex min = IOHIDElementGetPhysicalMin(element);
CFIndex max = IOHIDElementGetPhysicalMax(element) - min;
CFIndex state = IOHIDValueGetIntegerValue(value) - min;
float val = (float)state / (float)max;
if (use != axis_use_ids[i])
continue;
apple->axes[connection->slot][i] =
((val * 2.0f) - 1.0f) * 32767.0f;
}
}
break;
}
break;
}
break;
case kHIDPage_Button:
switch (type)
{
case kIOHIDElementTypeInput_Button:
{
CFIndex state = IOHIDValueGetIntegerValue(value);
unsigned id = use - 1;
if (state)
BIT32_SET(apple->buttons[connection->slot], id);
else
BIT32_CLEAR(apple->buttons[connection->slot], id);
}
break;
}
break;
}
}
}
static void remove_device(void* context, IOReturn result, void* sender)
{
apple_input_data_t *apple = (apple_input_data_t*)driver.input_data;
struct pad_connection* connection = (struct pad_connection*)context;
if (connection && connection->slot < MAX_PLAYERS)
{
char msg[512];
snprintf(msg, sizeof(msg), "Joypad #%u (%s) disconnected.",
connection->slot, "N/A");
msg_queue_push(g_extern.msg_queue, msg, 0, 60);
RARCH_LOG("[apple_input]: %s\n", msg);
apple->buttons[connection->slot] = 0;
memset(apple->axes[connection->slot], 0, sizeof(apple->axes));
pad_connection_pad_deinit(&slots[connection->slot], connection->slot);
free(connection);
}
IOHIDDeviceClose(sender, kIOHIDOptionsTypeSeizeDevice);
}
static void hid_device_report(void* context, IOReturn result, void *sender,
IOHIDReportType type, uint32_t reportID, uint8_t *report,
CFIndex reportLength)
{
struct pad_connection* connection = (struct pad_connection*)context;
if (connection)
pad_connection_packet(&slots[connection->slot], connection->slot,
connection->data, reportLength + 1);
}
static void add_device(void* context, IOReturn result,
void* sender, IOHIDDeviceRef device)
{
char device_name[PATH_MAX];
CFStringRef device_name_ref;
CFNumberRef vendorID, productID;
struct pad_connection* connection = (struct pad_connection*)
calloc(1, sizeof(*connection));
connection->device_handle = device;
connection->slot = MAX_PLAYERS;
IOHIDDeviceOpen(device, kIOHIDOptionsTypeNone);
/* Move the device's run loop to this thread. */
IOHIDDeviceScheduleWithRunLoop(device, CFRunLoopGetCurrent(),
kCFRunLoopCommonModes);
IOHIDDeviceRegisterRemovalCallback(device, remove_device, connection);
#ifndef IOS
device_name_ref = IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductKey));
CFStringGetCString(device_name_ref, device_name,
sizeof(device_name), kCFStringEncodingUTF8);
#endif
vendorID = (CFNumberRef)IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVendorIDKey));
CFNumberGetValue(vendorID, kCFNumberIntType, &connection->v_id);
productID = (CFNumberRef)IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductIDKey));
CFNumberGetValue(productID, kCFNumberIntType, &connection->p_id);
connection->slot = pad_connection_pad_init(slots, device_name,
connection, &hid_pad_connection_send_control);
if (pad_connection_has_interface(slots, connection->slot))
IOHIDDeviceRegisterInputReportCallback(device,
connection->data + 1, sizeof(connection->data) - 1,
hid_device_report, connection);
else
IOHIDDeviceRegisterInputValueCallback(device,
hid_device_input_callback, connection);
if (device_name[0] != '\0')
{
strlcpy(g_settings.input.device_names[connection->slot],
device_name, sizeof(g_settings.input.device_names));
input_config_autoconfigure_joypad(connection->slot,
device_name, connection->v_id, connection->p_id, apple_hid_joypad.ident);
RARCH_LOG("Port %d: %s.\n", connection->slot, device_name);
}
}
static void append_matching_dictionary(CFMutableArrayRef array,
uint32_t page, uint32_t use)
{
CFNumberRef pagen, usen;
CFMutableDictionaryRef matcher;
matcher = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
&kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
pagen = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &page);
CFDictionarySetValue(matcher, CFSTR(kIOHIDDeviceUsagePageKey), pagen);
CFRelease(pagen);
usen = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &use);
CFDictionarySetValue(matcher, CFSTR(kIOHIDDeviceUsageKey), usen);
CFRelease(usen);
CFArrayAppendValue(array, matcher);
CFRelease(matcher);
}
static bool apple_joypad_init(void)
{
CFMutableArrayRef matcher;
if (!(g_hid_manager = IOHIDManagerCreate(
kCFAllocatorDefault, kIOHIDOptionsTypeNone)))
return false;
matcher = CFArrayCreateMutable(kCFAllocatorDefault, 0,
&kCFTypeArrayCallBacks);
append_matching_dictionary(matcher, kHIDPage_GenericDesktop,
kHIDUsage_GD_Joystick);
append_matching_dictionary(matcher, kHIDPage_GenericDesktop,
kHIDUsage_GD_GamePad);
IOHIDManagerSetDeviceMatchingMultiple(g_hid_manager, matcher);
CFRelease(matcher);
IOHIDManagerRegisterDeviceMatchingCallback(g_hid_manager,
add_device, 0);
IOHIDManagerScheduleWithRunLoop(g_hid_manager, CFRunLoopGetMain(),
kCFRunLoopCommonModes);
IOHIDManagerOpen(g_hid_manager, kIOHIDOptionsTypeNone);
slots = (joypad_connection_t*)pad_connection_init(MAX_PLAYERS);
return true;
}
static bool apple_joypad_query_pad(unsigned pad)
{
return pad < MAX_PLAYERS;
}
static void apple_joypad_hid_destroy(void)
{
if (!g_hid_manager)
return;
IOHIDManagerClose(g_hid_manager, kIOHIDOptionsTypeNone);
IOHIDManagerUnscheduleFromRunLoop(g_hid_manager,
CFRunLoopGetCurrent(), kCFRunLoopCommonModes);
CFRelease(g_hid_manager);
g_hid_manager = NULL;
}
static void apple_joypad_destroy(void)
{
pad_connection_destroy(slots);
apple_joypad_hid_destroy();
}
static bool apple_joypad_button(unsigned port, uint16_t joykey)
{
apple_input_data_t *apple = (apple_input_data_t*)driver.input_data;
uint32_t buttons = pad_connection_get_buttons(&slots[port], port);
if (!apple || joykey == NO_BTN)
return false;
/* Check hat. */
if (GET_HAT_DIR(joykey))
return false;
/* Check the button. */
if ((port < MAX_PLAYERS) && (joykey < 32))
return ((apple->buttons[port] & (1 << joykey)) != 0) ||
((buttons & (1 << joykey)) != 0);
return false;
}
static int16_t apple_joypad_axis(unsigned port, uint32_t joyaxis)
{
apple_input_data_t *apple = (apple_input_data_t*)driver.input_data;
int16_t val = 0;
if (!apple || joyaxis == AXIS_NONE)
return 0;
if (AXIS_NEG_GET(joyaxis) < 4)
{
val = apple->axes[port][AXIS_NEG_GET(joyaxis)];
val += pad_connection_get_axis(&slots[port], port, AXIS_NEG_GET(joyaxis));
val = (val < 0) ? val : 0;
}
else if(AXIS_POS_GET(joyaxis) < 4)
{
val = apple->axes[port][AXIS_POS_GET(joyaxis)];
val += pad_connection_get_axis(&slots[port], port, AXIS_POS_GET(joyaxis));
val = (val > 0) ? val : 0;
}
return val;
}
static void apple_joypad_poll(void)
{
}
static bool apple_joypad_rumble(unsigned pad,
enum retro_rumble_effect effect, uint16_t strength)
{
return pad_connection_rumble(&slots[pad], pad, effect, strength);
}
static const char *apple_joypad_name(unsigned pad)
{
/* TODO/FIXME - implement properly */
if (pad >= MAX_PLAYERS)
return NULL;
return NULL;
}
rarch_joypad_driver_t apple_hid_joypad = {
apple_joypad_init,
apple_joypad_query_pad,
apple_joypad_destroy,
apple_joypad_button,
apple_joypad_axis,
apple_joypad_poll,
apple_joypad_rumble,
apple_joypad_name,
"apple_hid"
};
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