ar.c

来自「君正早期ucos系统(只有早期的才不没有打包成库),MPLAYER,文件系统,图」· C语言 代码 · 共 470 行 · 第 1/2 页

/*
 * 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 <mplaylib.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 inited = 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 (inited)
        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;
    }