diff options
Diffstat (limited to 'software/hhd70dongle/pcusbhid/hid_MACOSX.c')
| -rw-r--r-- | software/hhd70dongle/pcusbhid/hid_MACOSX.c | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/software/hhd70dongle/pcusbhid/hid_MACOSX.c b/software/hhd70dongle/pcusbhid/hid_MACOSX.c new file mode 100644 index 0000000..c5d5d1b --- /dev/null +++ b/software/hhd70dongle/pcusbhid/hid_MACOSX.c @@ -0,0 +1,412 @@ +/* Simple Raw HID functions for Linux - for use with Teensy RawHID example + * http://www.pjrc.com/teensy/rawhid.html + * Copyright (c) 2009 PJRC.COM, LLC + * + * rawhid_open - open 1 or more devices + * rawhid_recv - receive a packet + * rawhid_send - send a packet + * rawhid_close - close a device + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above description, website URL and copyright notice and this permission + * notice shall be included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * Version 1.0: Initial Release + */ + +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <unistd.h> +#include <IOKit/IOKitLib.h> +#include <IOKit/hid/IOHIDLib.h> + +#include "hid.h" + +#define BUFFER_SIZE 64 + +#define printf(...) // comment this out to get lots of info printed + + +// a list of all opened HID devices, so the caller can +// simply refer to them by number +typedef struct hid_struct hid_t; +typedef struct buffer_struct buffer_t; +static hid_t *first_hid = NULL; +static hid_t *last_hid = NULL; +struct hid_struct { + IOHIDDeviceRef ref; + int open; + uint8_t buffer[BUFFER_SIZE]; + buffer_t *first_buffer; + buffer_t *last_buffer; + struct hid_struct *prev; + struct hid_struct *next; +}; +struct buffer_struct { + struct buffer_struct *next; + uint32_t len; + uint8_t buf[BUFFER_SIZE]; +}; + +// private functions, not intended to be used from outside this file +static void add_hid(hid_t *); +static hid_t * get_hid(int); +static void free_all_hid(void); +static void hid_close(hid_t *); +static void attach_callback(void *, IOReturn, void *, IOHIDDeviceRef); +static void detach_callback(void *, IOReturn, void *hid_mgr, IOHIDDeviceRef dev); +static void timeout_callback(CFRunLoopTimerRef, void *); +static void input_callback(void *, IOReturn, void *, IOHIDReportType, + uint32_t, uint8_t *, CFIndex); + + + +// rawhid_recv - receive a packet +// Inputs: +// num = device to receive from (zero based) +// buf = buffer to receive packet +// len = buffer's size +// timeout = time to wait, in milliseconds +// Output: +// number of bytes received, or -1 on error +// +int rawhid_recv(int num, void *buf, int len, int timeout) +{ + hid_t *hid; + buffer_t *b; + CFRunLoopTimerRef timer=NULL; + CFRunLoopTimerContext context; + int ret=0, timeout_occurred=0; + + if (len < 1) return 0; + hid = get_hid(num); + if (!hid || !hid->open) return -1; + if ((b = hid->first_buffer) != NULL) { + if (len > b->len) len = b->len; + memcpy(buf, b->buf, len); + hid->first_buffer = b->next; + free(b); + return len; + } + memset(&context, 0, sizeof(context)); + context.info = &timeout_occurred; + timer = CFRunLoopTimerCreate(NULL, CFAbsoluteTimeGetCurrent() + + (double)timeout / 1000.0, 0, 0, 0, timeout_callback, &context); + CFRunLoopAddTimer(CFRunLoopGetCurrent(), timer, kCFRunLoopDefaultMode); + while (1) { + CFRunLoopRun(); + if ((b = hid->first_buffer) != NULL) { + if (len > b->len) len = b->len; + memcpy(buf, b->buf, len); + hid->first_buffer = b->next; + free(b); + ret = len; + break; + } + if (!hid->open) { + printf("rawhid_recv, device not open\n"); + ret = -1; + break; + } + if (timeout_occurred) break; + } + CFRunLoopTimerInvalidate(timer); + CFRelease(timer); + return ret; +} + +static void input_callback(void *context, IOReturn ret, void *sender, + IOHIDReportType type, uint32_t id, uint8_t *data, CFIndex len) +{ + buffer_t *n; + hid_t *hid; + + printf("input_callback\n"); + if (ret != kIOReturnSuccess || len < 1) return; + hid = context; + if (!hid || hid->ref != sender) return; + n = (buffer_t *)malloc(sizeof(buffer_t)); + if (!n) return; + if (len > BUFFER_SIZE) len = BUFFER_SIZE; + memcpy(n->buf, data, len); + n->len = len; + n->next = NULL; + if (!hid->first_buffer || !hid->last_buffer) { + hid->first_buffer = hid->last_buffer = n; + } else { + hid->last_buffer->next = n; + hid->last_buffer = n; + } + CFRunLoopStop(CFRunLoopGetCurrent()); +} + +static void timeout_callback(CFRunLoopTimerRef timer, void *info) +{ + printf("timeout_callback\n"); + *(int *)info = 1; + CFRunLoopStop(CFRunLoopGetCurrent()); +} + + +void output_callback(void *context, IOReturn ret, void *sender, + IOHIDReportType type, uint32_t id, uint8_t *data, CFIndex len) +{ + printf("output_callback, r=%d\n", ret); + if (ret == kIOReturnSuccess) { + *(int *)context = len; + } else { + // timeout if not success? + *(int *)context = 0; + } + CFRunLoopStop(CFRunLoopGetCurrent()); +} + + +// rawhid_send - send a packet +// Inputs: +// num = device to transmit to (zero based) +// buf = buffer containing packet to send +// len = number of bytes to transmit +// timeout = time to wait, in milliseconds +// Output: +// number of bytes sent, or -1 on error +// +int rawhid_send(int num, void *buf, int len, int timeout) +{ + hid_t *hid; + int result=-100; + + hid = get_hid(num); + if (!hid || !hid->open) return -1; +#if 1 + #warning "Send timeout not implemented on MACOSX" + IOReturn ret = IOHIDDeviceSetReport(hid->ref, kIOHIDReportTypeOutput, 0, buf, len); + result = (ret == kIOReturnSuccess) ? len : -1; +#endif +#if 0 + // No matter what I tried this never actually sends an output + // report and output_callback never gets called. Why?? + // Did I miss something? This is exactly the same params as + // the sync call that works. Is it an Apple bug? + // (submitted to Apple on 22-sep-2009, problem ID 7245050) + // + IOHIDDeviceScheduleWithRunLoop(hid->ref, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode); + // should already be scheduled with run loop by attach_callback, + // sadly this doesn't make any difference either way + + // could this be related? + // http://lists.apple.com/archives/usb/2008/Aug/msg00021.html + // + IOHIDDeviceSetReportWithCallback(hid->ref, kIOHIDReportTypeOutput, + 0, buf, len, (double)timeout / 1000.0, output_callback, &result); + while (1) { + printf("enter run loop (send)\n"); + CFRunLoopRun(); + printf("leave run loop (send)\n"); + if (result > -100) break; + if (!hid->open) { + result = -1; + break; + } + } +#endif + return result; +} + + +// rawhid_open - open 1 or more devices +// +// Inputs: +// max = maximum number of devices to open +// vid = Vendor ID, or -1 if any +// pid = Product ID, or -1 if any +// usage_page = top level usage page, or -1 if any +// usage = top level usage number, or -1 if any +// Output: +// actual number of devices opened +// +int rawhid_open(int max, int vid, int pid, int usage_page, int usage) +{ + static IOHIDManagerRef hid_manager=NULL; + CFMutableDictionaryRef dict; + CFNumberRef num; + IOReturn ret; + hid_t *p; + int count=0; + + if (first_hid) free_all_hid(); + printf("rawhid_open, max=%d\n", max); + if (max < 1) return 0; + // Start the HID Manager + // http://developer.apple.com/technotes/tn2007/tn2187.html + if (!hid_manager) { + hid_manager = IOHIDManagerCreate(kCFAllocatorDefault, kIOHIDOptionsTypeNone); + if (hid_manager == NULL || CFGetTypeID(hid_manager) != IOHIDManagerGetTypeID()) { + if (hid_manager) CFRelease(hid_manager); + return 0; + } + } + if (vid > 0 || pid > 0 || usage_page > 0 || usage > 0) { + // Tell the HID Manager what type of devices we want + dict = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, + &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); + if (!dict) return 0; + if (vid > 0) { + num = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &vid); + CFDictionarySetValue(dict, CFSTR(kIOHIDVendorIDKey), num); + CFRelease(num); + } + if (pid > 0) { + num = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &pid); + CFDictionarySetValue(dict, CFSTR(kIOHIDProductIDKey), num); + CFRelease(num); + } + if (usage_page > 0) { + num = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage_page); + CFDictionarySetValue(dict, CFSTR(kIOHIDPrimaryUsagePageKey), num); + CFRelease(num); + } + if (usage > 0) { + num = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage); + CFDictionarySetValue(dict, CFSTR(kIOHIDPrimaryUsageKey), num); + CFRelease(num); + } + IOHIDManagerSetDeviceMatching(hid_manager, dict); + CFRelease(dict); + } else { + IOHIDManagerSetDeviceMatching(hid_manager, NULL); + } + // set up a callbacks for device attach & detach + IOHIDManagerScheduleWithRunLoop(hid_manager, CFRunLoopGetCurrent(), + kCFRunLoopDefaultMode); + IOHIDManagerRegisterDeviceMatchingCallback(hid_manager, attach_callback, NULL); + IOHIDManagerRegisterDeviceRemovalCallback(hid_manager, detach_callback, NULL); + ret = IOHIDManagerOpen(hid_manager, kIOHIDOptionsTypeNone); + if (ret != kIOReturnSuccess) { + IOHIDManagerUnscheduleFromRunLoop(hid_manager, + CFRunLoopGetCurrent(), kCFRunLoopDefaultMode); + CFRelease(hid_manager); + return 0; + } + printf("run loop\n"); + // let it do the callback for all devices + while (CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, true) == kCFRunLoopRunHandledSource) ; + // count up how many were added by the callback + for (p = first_hid; p; p = p->next) count++; + return count; +} + + +// rawhid_close - close a device +// +// Inputs: +// num = device to close (zero based) +// Output +// (nothing) +// +void rawhid_close(int num) +{ + hid_t *hid; + + hid = get_hid(num); + if (!hid || !hid->open) return; + hid_close(hid); + hid->open = 0; +} + + +static void add_hid(hid_t *h) +{ + if (!first_hid || !last_hid) { + first_hid = last_hid = h; + h->next = h->prev = NULL; + return; + } + last_hid->next = h; + h->prev = last_hid; + h->next = NULL; + last_hid = h; +} + + +static hid_t * get_hid(int num) +{ + hid_t *p; + for (p = first_hid; p && num > 0; p = p->next, num--) ; + return p; +} + + +static void free_all_hid(void) +{ + hid_t *p, *q; + + for (p = first_hid; p; p = p->next) { + hid_close(p); + } + p = first_hid; + while (p) { + q = p; + p = p->next; + free(q); + } + first_hid = last_hid = NULL; +} + + +static void hid_close(hid_t *hid) +{ + if (!hid || !hid->open || !hid->ref) return; + IOHIDDeviceUnscheduleFromRunLoop(hid->ref, CFRunLoopGetCurrent( ), kCFRunLoopDefaultMode); + IOHIDDeviceClose(hid->ref, kIOHIDOptionsTypeNone); + hid->ref = NULL; +} + +static void detach_callback(void *context, IOReturn r, void *hid_mgr, IOHIDDeviceRef dev) +{ + hid_t *p; + + printf("detach callback\n"); + for (p = first_hid; p; p = p->next) { + if (p->ref == dev) { + p->open = 0; + CFRunLoopStop(CFRunLoopGetCurrent()); + return; + } + } +} + + +static void attach_callback(void *context, IOReturn r, void *hid_mgr, IOHIDDeviceRef dev) +{ + struct hid_struct *h; + + printf("attach callback\n"); + if (IOHIDDeviceOpen(dev, kIOHIDOptionsTypeNone) != kIOReturnSuccess) return; + h = (hid_t *)malloc(sizeof(hid_t)); + if (!h) return; + memset(h, 0, sizeof(hid_t)); + IOHIDDeviceScheduleWithRunLoop(dev, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode); + IOHIDDeviceRegisterInputReportCallback(dev, h->buffer, sizeof(h->buffer), + input_callback, h); + h->ref = dev; + h->open = 1; + add_hid(h); +} + + |