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mpv/input/ar.c

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/*
* Apple Remote input interface
*
* Copyright (C) 2007 Zoltan Ponekker <pontscho at kac.poliod.hu>
*
* (modified a bit by Ulion <ulion2002 at gmail.com>)
*
* This file is part of MPlayer.
*
* MPlayer 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 Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <IOKit/IOCFPlugIn.h>
#include <IOKit/hid/IOHIDLib.h>
#include <Carbon/Carbon.h>
#include <sys/types.h>
#include <unistd.h>
#include "input.h"
#include "ar.h"
extern int slave_mode;
extern const double NSAppKitVersionNumber;
typedef struct cookie_keycode_map {
char *cookies;
int seq_len;
int keycode;
} cookie_keycode_map_t;
/* On tiger, 5 always follows 6; on leopard, 18 always follows 19.
* On leopard, there seems to be no cookie value of 5 or 6.
* Following is the shortened cookie sequence list
* keycode cookies_on_tiger cookies_on_leopard *down_state
* AR_PREV_HOLD 14+6+3+2 31+19+3+2 yes
* AR_NEXT_HOLD 14+6+4+2 31+19+4+2 yes
* AR_MENU_HOLD 14+6+14+6 31+19+31+19
* AR_VUP 14+12+11+6 31+29+28+19 yes
* AR_VDOWN 14+13+11+6 31+30+28+19 yes
* AR_MENU 14+7+6+14+7+6 31+20+19+31+20+19
* AR_PLAY 14+8+6+14+8+6 31+21+19+31+21+19
* AR_NEXT 14+9+6+14+9+6 31+22+19+31+22+19
* AR_PREV 14+10+6+14+10+6 31+23+19+31+23+19
* AR_PLAY_HOLD 18+14+6+18+14+6 35+31+19+35+31+19
*
* *down_state: A button with this feature has a pressed event and
* a released event, with which we can trace the state of the button.
* A button without this feature will only return one release event.
*
* hidden keys currently not implemented:
* hold for 5 secs
* MENU_NEXT_HOLD 15+14+6+15+14+6
* MENU_PREV_HOLD 16+14+6+16+14+6
* MENU_VUP_HOLD 20+14+6+20+14+6
* MENU_VDOWN_HOLD 19+14+6+19+14+6
*
* It seems that pressing 'menu' and 'play' on the Apple Remote for
* 5 seconds will trigger the make-pair function of the remote.
* MENU_PLAY_HOLD 21+15+14+6+15+14+6
*/
static const cookie_keycode_map_t ar_codes_tiger[] = {
{ "\x0E\x06\x03\x02", 4, AR_PREV_HOLD },
{ "\x0E\x06\x04\x02", 4, AR_NEXT_HOLD },
{ "\x0E\x06\x0E\x06", 4, AR_MENU_HOLD },
{ "\x0E\x0C\x0B\x06", 4, AR_VUP },
{ "\x0E\x0D\x0B\x06", 4, AR_VDOWN },
{ "\x0E\x07\x06\x0E\x07\x06", 6, AR_MENU },
{ "\x0E\x08\x06\x0E\x08\x06", 6, AR_PLAY },
{ "\x0E\x09\x06\x0E\x09\x06", 6, AR_NEXT },
{ "\x0E\x0A\x06\x0E\x0A\x06", 6, AR_PREV },
{ "\x12\x0E\x06\x12\x0E\x06", 6, AR_PLAY_HOLD },
{ NULL, 0, MP_INPUT_NOTHING },
};
static const cookie_keycode_map_t ar_codes_leopard[] = {
{ "\x1F\x13\x03\x02", 4, AR_PREV_HOLD },
{ "\x1F\x13\x04\x02", 4, AR_NEXT_HOLD },
{ "\x1F\x13\x1F\x13", 4, AR_MENU_HOLD },
{ "\x1F\x1D\x1C\x13", 4, AR_VUP },
{ "\x1F\x1E\x1C\x13", 4, AR_VDOWN },
{ "\x1F\x14\x13\x1F\x14\x13", 6, AR_MENU },
{ "\x1F\x15\x13\x1F\x15\x13", 6, AR_PLAY },
{ "\x1F\x16\x13\x1F\x16\x13", 6, AR_NEXT },
{ "\x1F\x17\x13\x1F\x17\x13", 6, AR_PREV },
{ "\x23\x1F\x13\x23\x1F\x13", 6, AR_PLAY_HOLD },
{ NULL, 0, MP_INPUT_NOTHING },
};
static int is_leopard;
static const cookie_keycode_map_t *ar_codes;
static IOHIDQueueInterface **queue;
static IOHIDDeviceInterface **hidDeviceInterface = NULL;
static int initialized = 0;
static int hidDeviceIsOpen;
/* Maximum number of elements in queue before oldest elements
in queue begin to be lost. Set to 16 to hold at least 2 events. */
static const int MAX_QUEUE_SIZE = 16;
static int FindHIDDevices(mach_port_t masterPort,
io_iterator_t *hidObjectIterator)
{
CFMutableDictionaryRef hidMatchDictionary;
IOReturn ioReturnValue;
// Set up a matching dictionary to search the I/O Registry
// by class name for all HID class devices.
hidMatchDictionary = IOServiceMatching("AppleIRController");
// Now search I/O Registry for matching devices.
ioReturnValue = IOServiceGetMatchingServices(masterPort,
hidMatchDictionary,
hidObjectIterator);
// If search is unsuccessful, print message and hang.
if (ioReturnValue != kIOReturnSuccess ||
!IOIteratorIsValid(*hidObjectIterator)) {
return -1;
}
return 0;
}
static int getHIDCookies(IOHIDDeviceInterface122 **handle,
IOHIDElementCookie **cookies,
int *nr_cookies)
{
CFTypeRef object;
long number;
CFArrayRef elements;
CFDictionaryRef element;
CFIndex i;
*nr_cookies = 0;
if (!handle || !(*handle))
return -1;
// Copy all elements, since we're grabbing most of the elements
// for this device anyway, and thus, it's faster to iterate them
// ourselves. When grabbing only one or two elements, a matching
// dictionary should be passed in here instead of NULL.
if (((*handle)->copyMatchingElements(handle, NULL, &elements)) != kIOReturnSuccess)
return -1;
// No elements, still a valid result.
if (CFArrayGetCount(elements)==0)
return 0;
*cookies = calloc(CFArrayGetCount(elements), sizeof(IOHIDElementCookie));
if (*cookies == NULL)
return -1;
for (i=0; i<CFArrayGetCount(elements); i++) {
element = CFArrayGetValueAtIndex(elements, i);
// Get cookie.
object = CFDictionaryGetValue(element, CFSTR(kIOHIDElementCookieKey));
if (object == 0 || CFGetTypeID(object) != CFNumberGetTypeID())
continue;
if (!CFNumberGetValue((CFNumberRef)object, kCFNumberLongType, &number))
continue;
(*cookies)[(*nr_cookies)++] = (IOHIDElementCookie)number;
}
return 0;
}
static int CreateHIDDeviceInterface(io_object_t hidDevice,
IOHIDDeviceInterface ***hidDeviceInterface)
{
io_name_t className;
IOCFPlugInInterface **plugInInterface = NULL;
SInt32 score = 0;
if (IOObjectGetClass(hidDevice, className) != kIOReturnSuccess)
return -1;
if (IOCreatePlugInInterfaceForService(hidDevice,
kIOHIDDeviceUserClientTypeID,
kIOCFPlugInInterfaceID,
&plugInInterface,
&score) != kIOReturnSuccess)
return -1;
// Call a method of the intermediate plugin to create the device interface
if ((*plugInInterface)->QueryInterface(plugInInterface,
CFUUIDGetUUIDBytes(kIOHIDDeviceInterfaceID),
(LPVOID)hidDeviceInterface) != S_OK
|| *hidDeviceInterface == NULL || **hidDeviceInterface == NULL) {
(*plugInInterface)->Release(plugInInterface);
return -1;
}
(*plugInInterface)->Release(plugInInterface);
return 0;
}
int mp_input_ar_init(void)
{
io_iterator_t hidObjectIterator;
io_object_t hidDevice;
int i;
IOHIDElementCookie *cookies = NULL;
int nr_cookies = 0;
if (initialized)
mp_input_ar_close(-1);
if (floor(NSAppKitVersionNumber) <= 824 /* NSAppKitVersionNumber10_4 */) {
ar_codes = &ar_codes_tiger[0];
is_leopard = 0;
}
else {
ar_codes = &ar_codes_leopard[0];
is_leopard = 1;
}
if (FindHIDDevices(kIOMasterPortDefault, &hidObjectIterator))
return -1;
// Multiple controls could be found, we only use the first usable one.
while ((hidDevice = IOIteratorNext(hidObjectIterator))) {
if (CreateHIDDeviceInterface(hidDevice, &hidDeviceInterface) < 0) {
hidDeviceInterface = NULL;
IOObjectRelease(hidDevice);
continue;
}
if (getHIDCookies((IOHIDDeviceInterface122 **)hidDeviceInterface,
&cookies,
&nr_cookies) < 0) {
(*hidDeviceInterface)->Release(hidDeviceInterface);
hidDeviceInterface = NULL;
IOObjectRelease(hidDevice);
continue;
}
IOObjectRelease(hidDevice);
break;
}
if (hidDeviceInterface == NULL)
goto mp_input_ar_init_error;
// Open the device.
if ((*hidDeviceInterface)->open(hidDeviceInterface,
kIOHIDOptionsTypeSeizeDevice) != kIOReturnSuccess)
goto mp_input_ar_init_error;
hidDeviceIsOpen = 1;
if ((queue = (*hidDeviceInterface)->allocQueue(hidDeviceInterface)) == NULL
|| *queue == NULL)
goto mp_input_ar_init_error;
// Create the queue.
(*queue)->create(queue, 0, MAX_QUEUE_SIZE);
// Add elements to the queue to make the queue work.
// On tiger, it's a sequence from 1 to 21,
// maybe it's the range of cookie values.
for (i = 0;i < nr_cookies;i++)
(*queue)->addElement(queue, cookies[i], 0);
// not used anymore
free(cookies);
// Start data delivery to the queue.
(*queue)->start(queue);
// not useful anymore
IOObjectRelease(hidObjectIterator);
initialized = 1;
return 0;
mp_input_ar_init_error:
free(cookies);
if (hidDeviceInterface != NULL) {
if (*hidDeviceInterface != NULL) {
(*hidDeviceInterface)->close(hidDeviceInterface);
(*hidDeviceInterface)->Release(hidDeviceInterface);
}
hidDeviceInterface = NULL;
}
IOObjectRelease(hidObjectIterator);
return -1;
}
static int is_mplayer_front(void)
{
ProcessSerialNumber myProc, frProc;
Boolean sameProc;
pid_t parentPID;
if (GetFrontProcess(&frProc) == noErr
&& GetCurrentProcess(&myProc) == noErr
&& SameProcess(&frProc, &myProc, &sameProc) == noErr) {
if (sameProc)
return 1;
// If MPlayer is running in slave mode, also check parent process.
if (slave_mode && GetProcessPID(&frProc, &parentPID) == noErr)
return parentPID==getppid();
}
return 0;
}
int mp_input_ar_read(void *ctx, int fd)
{
int i, down = 0;
int ret = MP_INPUT_NOTHING;
AbsoluteTime zeroTime = {0,0};
IOHIDEventStruct event;
static int prev_event = 0;
IOReturn result = kIOReturnSuccess;
const cookie_keycode_map_t *ar_code;
int cookie_nr = 0;
char cookie_queue[MAX_QUEUE_SIZE];
int value_queue[MAX_QUEUE_SIZE];
if (initialized == 0)
return MP_INPUT_NOTHING;
while ((result = (*queue)->getNextEvent(queue, &event, zeroTime, 0)) == kIOReturnSuccess) {
#ifdef TEST
printf(" - event cookie: %d, value: %d, long value: %d\n",
(int)event.elementCookie, (int)event.value, (int)event.longValue);
#endif
// Shorten cookie sequence by removing cookies value 5 and 18,
// since 5 always follows 6 (on tiger), 18 follows 19 (on leopard).
if ((int)event.elementCookie == 5
|| ((int)event.elementCookie == 18 && is_leopard))
continue;
// Check valid cookie range.
if ((int)event.elementCookie > 35 || (int)event.elementCookie < 2) {
cookie_nr = 0;
continue;
}
cookie_queue[cookie_nr] = (char)(int)event.elementCookie;
value_queue[cookie_nr++] = event.value;
// 4 cookies are necessary to make up a valid sequence.
if (cookie_nr>=4) {
// Find matching sequence.
ar_code = ar_codes;
while (ar_code->cookies != NULL &&
(cookie_nr < ar_code->seq_len ||
0 != memcmp(ar_code->cookies,
&cookie_queue[cookie_nr-ar_code->seq_len],
ar_code->seq_len)))
++ar_code;
if (ar_code->cookies != NULL) {
ret = ar_code->keycode;
switch (ret) {
// For these 4 keys, the remote can keep a hold state.
case AR_VUP:
case AR_VDOWN:
case AR_NEXT_HOLD:
case AR_PREV_HOLD:
for (i = cookie_nr-ar_code->seq_len; i < cookie_nr; ++i) {
if (value_queue[i]) {
down = MP_KEY_DOWN;
break;
}
}
break;
default:
down = 0;
}
}
}
}
if (!is_mplayer_front()) {
if (hidDeviceIsOpen) {
(*hidDeviceInterface)->close(hidDeviceInterface);
hidDeviceIsOpen = 0;
// Read out all pending events.
while (result == kIOReturnSuccess)
result = (*queue)->getNextEvent(queue, &event, zeroTime, 0);
}
return MP_INPUT_NOTHING;
}
// If we are switched from running as a foreground process to a
// background process and back again, re-open the device to make
// sure we are not affected by the system or other applications
// using the Apple Remote.
else if (!hidDeviceIsOpen) {
if ((*hidDeviceInterface)->open(hidDeviceInterface,
kIOHIDOptionsTypeSeizeDevice) == kIOReturnSuccess)
hidDeviceIsOpen = 1;
}
if (ret > 0)
prev_event = ret;
return ret | down;
}
void mp_input_ar_close(int fd)
{
if (initialized == 0)
return;
// Close the device.
(*hidDeviceInterface)->close(hidDeviceInterface);
// Stop data delivery to queue.
(*queue)->stop(queue);
// Dispose of queue.
(*queue)->dispose(queue);
// Release the queue we allocated.
(*queue)->Release(queue);
// Release the interface.
(*hidDeviceInterface)->Release(hidDeviceInterface);
initialized = 0;
}
#ifdef TEST
int main(void)
{
int ret;
if (mp_input_ar_init() < 0) {
printf("Unable to initialize Apple Remote.\n");
return 1;
}
while (1) {
switch ((ret = mp_input_ar_read(NULL, 0)) & ~MP_KEY_DOWN) {
case AR_PLAY: printf(" - AR_PLAY."); break;
case AR_PLAY_HOLD: printf(" - AR_PLAY_HOLD."); break;
case AR_NEXT: printf(" - AR_NEXT."); break;
case AR_NEXT_HOLD: printf(" - AR_NEXT_HOLD."); break;
case AR_PREV: printf(" - AR_PREV."); break;
case AR_PREV_HOLD: printf(" - AR_PREV_HOLD."); break;
case AR_MENU: printf(" - AR_MENU."); break;
case AR_MENU_HOLD: printf(" - AR_MENU_HOLD."); break;
case AR_VUP: printf(" - AR_VUP."); break;
case AR_VDOWN: printf(" - AR_VDOWN."); break;
}
if ((ret > 0 )&&(ret & MP_KEY_DOWN))
printf(" [hold]");
if (ret > 0)
printf("\n");
}
mp_input_ar_close(0);
return 0;
}
#endif
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