mirror of https://github.com/libsdl-org/SDL
Port libusb hid.c to SDL, add to MinGW configure
This commit is contained in:
Ethan Lee
parent
aebaa316c7
commit
aa09e61223
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@ -24121,10 +24121,6 @@ CheckHIDAPI()
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# The hidraw support doesn't catch Xbox, PS4 and Nintendo controllers,
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# so we'll just use libusb when it's available.
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case "$host" in
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# TODO: Windows can support libusb, the hid.c file just depends on Unix APIs
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*-*-cygwin* | *-*-mingw32* )
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skiplibusb=yes
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;;
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# libusb does not support iOS
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arm*-apple-darwin* | *-ios-* )
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skiplibusb=yes
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@ -3205,10 +3205,6 @@ CheckHIDAPI()
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# The hidraw support doesn't catch Xbox, PS4 and Nintendo controllers,
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# so we'll just use libusb when it's available.
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case "$host" in
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# TODO: Windows can support libusb, the hid.c file just depends on Unix APIs
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*-*-cygwin* | *-*-mingw32* )
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skiplibusb=yes
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;;
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# libusb does not support iOS
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arm*-apple-darwin* | *-ios-* )
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skiplibusb=yes
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@ -22,37 +22,18 @@
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code repository located at:
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https://github.com/libusb/hidapi .
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********************************************************/
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/* This file is heavily modified from the original libusb.c, for portability.
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* Last upstream update was from July 25, 2019, Git commit 93dca807.
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*/
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#include "../../SDL_internal.h"
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#include "SDL_thread.h"
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#include "SDL_mutex.h"
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#ifdef SDL_JOYSTICK_HIDAPI
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE /* needed for wcsdup() before glibc 2.10 */
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#endif
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/* C */
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <locale.h>
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#include <errno.h>
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/* Unix */
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/utsname.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <wchar.h>
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/* GNU / LibUSB */
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#include <libusb.h>
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#ifndef __ANDROID__
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#include <iconv.h>
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#endif
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#include "hidapi.h"
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@ -61,67 +42,63 @@ namespace NAMESPACE
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{
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#endif
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#ifdef __ANDROID__
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/* Barrier implementation because Android/Bionic don't have pthread_barrier.
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This implementation came from Brent Priddy and was posted on
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StackOverflow. It is used with his permission. */
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typedef int pthread_barrierattr_t;
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typedef struct pthread_barrier {
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pthread_mutex_t mutex;
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pthread_cond_t cond;
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int count;
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int trip_count;
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} pthread_barrier_t;
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static int pthread_barrier_init(pthread_barrier_t *barrier, const pthread_barrierattr_t *attr, unsigned int count)
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typedef struct _SDL_ThreadBarrier
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{
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if(count == 0) {
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errno = EINVAL;
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return -1;
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SDL_mutex *mutex;
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SDL_cond *cond;
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Uint32 count;
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Uint32 trip_count;
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} SDL_ThreadBarrier;
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static int SDL_CreateThreadBarrier(SDL_ThreadBarrier *barrier, Uint32 count)
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{
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if (barrier == NULL) {
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return SDL_SetError("barrier must be non-NULL");
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}
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if (count == 0) {
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return SDL_SetError("count must be > 0");
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}
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if(pthread_mutex_init(&barrier->mutex, 0) < 0) {
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return -1;
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barrier->mutex = SDL_CreateMutex();
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if (barrier->mutex == NULL) {
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return -1; /* Error set by CreateMutex */
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}
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if(pthread_cond_init(&barrier->cond, 0) < 0) {
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pthread_mutex_destroy(&barrier->mutex);
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return -1;
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barrier->cond = SDL_CreateCond();
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if (barrier->cond == NULL) {
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return -1; /* Error set by CreateCond */
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}
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barrier->trip_count = count;
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barrier->count = 0;
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return 0;
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}
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static int pthread_barrier_destroy(pthread_barrier_t *barrier)
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static void SDL_DestroyThreadBarrier(SDL_ThreadBarrier *barrier)
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{
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pthread_cond_destroy(&barrier->cond);
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pthread_mutex_destroy(&barrier->mutex);
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return 0;
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SDL_DestroyCond(barrier->cond);
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SDL_DestroyMutex(barrier->mutex);
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}
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static int pthread_barrier_wait(pthread_barrier_t *barrier)
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static int SDL_WaitThreadBarrier(SDL_ThreadBarrier *barrier)
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{
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pthread_mutex_lock(&barrier->mutex);
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++(barrier->count);
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if(barrier->count >= barrier->trip_count)
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{
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SDL_LockMutex(barrier->mutex);
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barrier->count += 1;
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if (barrier->count >= barrier->trip_count) {
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barrier->count = 0;
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pthread_cond_broadcast(&barrier->cond);
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pthread_mutex_unlock(&barrier->mutex);
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SDL_CondBroadcast(barrier->cond);
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SDL_UnlockMutex(barrier->mutex);
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return 1;
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}
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else
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{
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pthread_cond_wait(&barrier->cond, &(barrier->mutex));
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pthread_mutex_unlock(&barrier->mutex);
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return 0;
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}
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SDL_CondWait(barrier->cond, barrier->mutex);
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SDL_UnlockMutex(barrier->mutex);
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return 0;
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}
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#endif
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#if defined(__cplusplus) && !defined(NAMESPACE)
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extern "C" {
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#endif
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@ -173,10 +150,10 @@ struct hid_device_ {
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int blocking; /* boolean */
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/* Read thread objects */
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pthread_t thread;
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pthread_mutex_t mutex; /* Protects input_reports */
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pthread_cond_t condition;
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pthread_barrier_t barrier; /* Ensures correct startup sequence */
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SDL_Thread *thread;
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SDL_mutex *mutex; /* Protects input_reports */
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SDL_cond *condition;
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SDL_ThreadBarrier barrier; /* Ensures correct startup sequence */
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int shutdown_thread;
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int cancelled;
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struct libusb_transfer *transfer;
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@ -192,12 +169,12 @@ static int return_data(hid_device *dev, unsigned char *data, size_t length);
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static hid_device *new_hid_device(void)
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{
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hid_device *dev = (hid_device *)calloc(1, sizeof(hid_device));
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hid_device *dev = (hid_device*) calloc(1, sizeof(hid_device));
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dev->blocking = 1;
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pthread_mutex_init(&dev->mutex, NULL);
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pthread_cond_init(&dev->condition, NULL);
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pthread_barrier_init(&dev->barrier, NULL, 2);
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dev->mutex = SDL_CreateMutex();
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dev->condition = SDL_CreateCond();
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SDL_CreateThreadBarrier(&dev->barrier, 2);
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return dev;
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}
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@ -205,17 +182,17 @@ static hid_device *new_hid_device(void)
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static void free_hid_device(hid_device *dev)
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{
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/* Clean up the thread objects */
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pthread_barrier_destroy(&dev->barrier);
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pthread_cond_destroy(&dev->condition);
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pthread_mutex_destroy(&dev->mutex);
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SDL_DestroyThreadBarrier(&dev->barrier);
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SDL_DestroyCond(dev->condition);
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SDL_DestroyMutex(dev->mutex);
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/* Free the device itself */
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free(dev);
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}
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#if 0
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/*TODO: Implement this funciton on hidapi/libusb.. */
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static void register_error(hid_device *device, const char *op)
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/*TODO: Implement this function on hidapi/libusb.. */
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static void register_error(hid_device *dev, const char *op)
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{
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}
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@ -400,20 +377,13 @@ static wchar_t *get_usb_string(libusb_device_handle *dev, uint8_t idx)
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int len;
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wchar_t *str = NULL;
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#ifndef __ANDROID__ /* we don't use iconv on Android */
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wchar_t wbuf[256];
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/* iconv variables */
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iconv_t ic;
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SDL_iconv_t ic;
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size_t inbytes;
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size_t outbytes;
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size_t res;
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#ifdef __FreeBSD__
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const char *inptr;
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#else
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char *inptr;
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#endif
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char *outptr;
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#endif
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/* Determine which language to use. */
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uint16_t lang;
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@ -430,32 +400,13 @@ static wchar_t *get_usb_string(libusb_device_handle *dev, uint8_t idx)
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if (len < 0)
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return NULL;
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#ifdef __ANDROID__
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/* Bionic does not have iconv support nor wcsdup() function, so it
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has to be done manually. The following code will only work for
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code points that can be represented as a single UTF-16 character,
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and will incorrectly convert any code points which require more
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than one UTF-16 character.
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Skip over the first character (2-bytes). */
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len -= 2;
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str = malloc((len / 2 + 1) * sizeof(wchar_t));
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int i;
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for (i = 0; i < len / 2; i++) {
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str[i] = buf[i * 2 + 2] | (buf[i * 2 + 3] << 8);
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}
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str[len / 2] = 0x00000000;
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#else
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/* buf does not need to be explicitly NULL-terminated because
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it is only passed into iconv() which does not need it. */
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/* Initialize iconv. */
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ic = iconv_open("WCHAR_T", "UTF-16LE");
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if (ic == (iconv_t)-1) {
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LOG("iconv_open() failed\n");
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ic = SDL_iconv_open("WCHAR_T", "UTF-16LE");
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if (ic == (SDL_iconv_t)-1) {
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LOG("SDL_iconv_open() failed\n");
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return NULL;
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}
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@ -465,9 +416,9 @@ static wchar_t *get_usb_string(libusb_device_handle *dev, uint8_t idx)
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inbytes = len-2;
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outptr = (char*) wbuf;
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outbytes = sizeof(wbuf);
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res = iconv(ic, &inptr, &inbytes, &outptr, &outbytes);
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res = SDL_iconv(ic, &inptr, &inbytes, &outptr, &outbytes);
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if (res == (size_t)-1) {
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LOG("iconv() failed\n");
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LOG("SDL_iconv() failed\n");
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goto err;
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}
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@ -480,9 +431,7 @@ static wchar_t *get_usb_string(libusb_device_handle *dev, uint8_t idx)
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str = wcsdup(wbuf);
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err:
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iconv_close(ic);
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#endif
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SDL_iconv_close(ic);
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return str;
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}
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@ -503,16 +452,20 @@ static char *make_path(libusb_device *dev, int interface_number)
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int HID_API_EXPORT hid_init(void)
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{
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if (!usb_context) {
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#ifndef _WIN32 /* TODO: Win32 setlocale */
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const char *locale;
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#endif /* _WIN32 */
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/* Init Libusb */
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if (libusb_init(&usb_context))
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return -1;
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#ifndef _WIN32 /* TODO: Win32 setlocale */
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/* Set the locale if it's not set. */
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locale = setlocale(LC_CTYPE, NULL);
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if (!locale)
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setlocale(LC_CTYPE, "");
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#endif /* _WIN32 */
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}
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return 0;
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@ -663,7 +616,7 @@ struct hid_device_info HID_API_EXPORT *hid_enumerate(unsigned short vendor_id,
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struct hid_device_info *tmp;
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/* VID/PID match. Create the record. */
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tmp = (struct hid_device_info *)calloc(1, sizeof(struct hid_device_info));
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tmp = (struct hid_device_info*) calloc(1, sizeof(struct hid_device_info));
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if (cur_dev) {
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cur_dev->next = tmp;
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}
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@ -836,19 +789,19 @@ static void read_callback(struct libusb_transfer *transfer)
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if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
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struct input_report *rpt = (struct input_report *)malloc(sizeof(*rpt));
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rpt->data = (uint8_t *)malloc(transfer->actual_length);
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struct input_report *rpt = (struct input_report*) malloc(sizeof(*rpt));
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rpt->data = (uint8_t*) malloc(transfer->actual_length);
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memcpy(rpt->data, transfer->buffer, transfer->actual_length);
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rpt->len = transfer->actual_length;
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rpt->next = NULL;
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pthread_mutex_lock(&dev->mutex);
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SDL_LockMutex(dev->mutex);
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/* Attach the new report object to the end of the list. */
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if (dev->input_reports == NULL) {
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/* The list is empty. Put it at the root. */
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dev->input_reports = rpt;
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pthread_cond_signal(&dev->condition);
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SDL_CondSignal(dev->condition);
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}
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else {
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/* Find the end of the list and attach. */
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@ -867,7 +820,7 @@ static void read_callback(struct libusb_transfer *transfer)
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return_data(dev, NULL, 0);
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}
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}
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pthread_mutex_unlock(&dev->mutex);
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SDL_UnlockMutex(dev->mutex);
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}
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else if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
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dev->shutdown_thread = 1;
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@ -896,14 +849,14 @@ static void read_callback(struct libusb_transfer *transfer)
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}
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static void *read_thread(void *param)
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static int read_thread(void *param)
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{
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hid_device *dev = (hid_device *)param;
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unsigned char *buf;
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uint8_t *buf;
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const size_t length = dev->input_ep_max_packet_size;
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/* Set up the transfer object. */
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buf = (unsigned char *)malloc(length);
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buf = (uint8_t*) malloc(length);
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dev->transfer = libusb_alloc_transfer(0);
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libusb_fill_interrupt_transfer(dev->transfer,
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dev->device_handle,
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@ -919,7 +872,7 @@ static void *read_thread(void *param)
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libusb_submit_transfer(dev->transfer);
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/* Notify the main thread that the read thread is up and running. */
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pthread_barrier_wait(&dev->barrier);
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SDL_WaitThreadBarrier(&dev->barrier);
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/* Handle all the events. */
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while (!dev->shutdown_thread) {
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@ -951,9 +904,9 @@ static void *read_thread(void *param)
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make sure that a thread which is about to go to sleep waiting on
|
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the condition actually will go to sleep before the condition is
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signaled. */
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pthread_mutex_lock(&dev->mutex);
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pthread_cond_broadcast(&dev->condition);
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pthread_mutex_unlock(&dev->mutex);
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SDL_LockMutex(dev->mutex);
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SDL_CondBroadcast(dev->condition);
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SDL_UnlockMutex(dev->mutex);
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/* The dev->transfer->buffer and dev->transfer objects are cleaned up
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in hid_close(). They are not cleaned up here because this thread
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@ -963,7 +916,7 @@ static void *read_thread(void *param)
|
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since hid_close() calls libusb_cancel_transfer(), on these objects,
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they can not be cleaned up here. */
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return NULL;
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return 0;
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}
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@ -1072,10 +1025,10 @@ hid_device * HID_API_EXPORT hid_open_path(const char *path, int bExclusive)
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}
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}
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pthread_create(&dev->thread, NULL, read_thread, dev);
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dev->thread = SDL_CreateThread(read_thread, NULL, dev);
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/* Wait here for the read thread to be initialized. */
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pthread_barrier_wait(&dev->barrier);
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SDL_WaitThreadBarrier(&dev->barrier);
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}
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free(dev_path);
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|
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@ -1166,11 +1119,13 @@ static int return_data(hid_device *dev, unsigned char *data, size_t length)
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return len;
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}
|
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|
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#if 0 /* TODO: pthread_cleanup SDL? */
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static void cleanup_mutex(void *param)
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{
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hid_device *dev = (hid_device *)param;
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pthread_mutex_unlock(&dev->mutex);
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SDL_UnlockMutex(dev->mutex);
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}
|
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#endif
|
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|
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|
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int HID_API_EXPORT hid_read_timeout(hid_device *dev, unsigned char *data, size_t length, int milliseconds)
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|
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@ -1184,8 +1139,8 @@ int HID_API_EXPORT hid_read_timeout(hid_device *dev, unsigned char *data, size_t
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return transferred;
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#endif
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pthread_mutex_lock(&dev->mutex);
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pthread_cleanup_push(&cleanup_mutex, dev);
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SDL_LockMutex(dev->mutex);
|
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/* TODO: pthread_cleanup SDL? */
|
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|
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/* There's an input report queued up. Return it. */
|
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if (dev->input_reports) {
|
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|
|
@ -1204,7 +1159,7 @@ int HID_API_EXPORT hid_read_timeout(hid_device *dev, unsigned char *data, size_t
|
|||
if (milliseconds == -1) {
|
||||
/* Blocking */
|
||||
while (!dev->input_reports && !dev->shutdown_thread) {
|
||||
pthread_cond_wait(&dev->condition, &dev->mutex);
|
||||
SDL_CondWait(dev->condition, dev->mutex);
|
||||
}
|
||||
if (dev->input_reports) {
|
||||
bytes_read = return_data(dev, data, length);
|
||||
|
|
@ -1213,17 +1168,9 @@ int HID_API_EXPORT hid_read_timeout(hid_device *dev, unsigned char *data, size_t
|
|||
else if (milliseconds > 0) {
|
||||
/* Non-blocking, but called with timeout. */
|
||||
int res;
|
||||
struct timespec ts;
|
||||
clock_gettime(CLOCK_REALTIME, &ts);
|
||||
ts.tv_sec += milliseconds / 1000;
|
||||
ts.tv_nsec += (milliseconds % 1000) * 1000000;
|
||||
if (ts.tv_nsec >= 1000000000L) {
|
||||
ts.tv_sec++;
|
||||
ts.tv_nsec -= 1000000000L;
|
||||
}
|
||||
|
||||
while (!dev->input_reports && !dev->shutdown_thread) {
|
||||
res = pthread_cond_timedwait(&dev->condition, &dev->mutex, &ts);
|
||||
res = SDL_CondWaitTimeout(dev->condition, dev->mutex, milliseconds);
|
||||
if (res == 0) {
|
||||
if (dev->input_reports) {
|
||||
bytes_read = return_data(dev, data, length);
|
||||
|
|
@ -1234,7 +1181,7 @@ int HID_API_EXPORT hid_read_timeout(hid_device *dev, unsigned char *data, size_t
|
|||
or the read thread was shutdown. Run the
|
||||
loop again (ie: don't break). */
|
||||
}
|
||||
else if (res == ETIMEDOUT) {
|
||||
else if (res == SDL_MUTEX_TIMEDOUT) {
|
||||
/* Timed out. */
|
||||
bytes_read = 0;
|
||||
break;
|
||||
|
|
@ -1252,8 +1199,8 @@ int HID_API_EXPORT hid_read_timeout(hid_device *dev, unsigned char *data, size_t
|
|||
}
|
||||
|
||||
ret:
|
||||
pthread_mutex_unlock(&dev->mutex);
|
||||
pthread_cleanup_pop(0);
|
||||
SDL_UnlockMutex(dev->mutex);
|
||||
/* TODO: pthread_cleanup SDL? */
|
||||
|
||||
return bytes_read;
|
||||
}
|
||||
|
|
@ -1334,6 +1281,8 @@ int HID_API_EXPORT hid_get_feature_report(hid_device *dev, unsigned char *data,
|
|||
|
||||
void HID_API_EXPORT hid_close(hid_device *dev)
|
||||
{
|
||||
int status;
|
||||
|
||||
if (!dev)
|
||||
return;
|
||||
|
||||
|
|
@ -1342,7 +1291,7 @@ void HID_API_EXPORT hid_close(hid_device *dev)
|
|||
libusb_cancel_transfer(dev->transfer);
|
||||
|
||||
/* Wait for read_thread() to end. */
|
||||
pthread_join(dev->thread, NULL);
|
||||
SDL_WaitThread(dev->thread, &status);
|
||||
|
||||
/* Clean up the Transfer objects allocated in read_thread(). */
|
||||
free(dev->transfer->buffer);
|
||||
|
|
@ -1355,11 +1304,11 @@ void HID_API_EXPORT hid_close(hid_device *dev)
|
|||
libusb_close(dev->device_handle);
|
||||
|
||||
/* Clear out the queue of received reports. */
|
||||
pthread_mutex_lock(&dev->mutex);
|
||||
SDL_LockMutex(dev->mutex);
|
||||
while (dev->input_reports) {
|
||||
return_data(dev, NULL, 0);
|
||||
}
|
||||
pthread_mutex_unlock(&dev->mutex);
|
||||
SDL_UnlockMutex(dev->mutex);
|
||||
|
||||
free_hid_device(dev);
|
||||
}
|
||||
|
|
@ -1408,6 +1357,7 @@ struct lang_map_entry {
|
|||
uint16_t usb_code;
|
||||
};
|
||||
|
||||
#ifndef _WIN32 /* TODO: Win32 setlocale */
|
||||
#define LANG(name,code,usb_code) { name, code, usb_code }
|
||||
static struct lang_map_entry lang_map[] = {
|
||||
LANG("Afrikaans", "af", 0x0436),
|
||||
|
|
@ -1452,7 +1402,7 @@ static struct lang_map_entry lang_map[] = {
|
|||
LANG("English - Ireland", "en_ie", 0x1809),
|
||||
LANG("English - Jamaica", "en_jm", 0x2009),
|
||||
LANG("English - New Zealand", "en_nz", 0x1409),
|
||||
LANG("English - Phillippines", "en_ph", 0x3409),
|
||||
LANG("English - Philippines", "en_ph", 0x3409),
|
||||
LANG("English - Southern Africa", "en_za", 0x1C09),
|
||||
LANG("English - Trinidad", "en_tt", 0x2C09),
|
||||
LANG("English - Great Britain", "en_gb", 0x0809),
|
||||
|
|
@ -1545,9 +1495,11 @@ static struct lang_map_entry lang_map[] = {
|
|||
LANG("Zulu", "zu", 0x0435),
|
||||
LANG(NULL, NULL, 0x0),
|
||||
};
|
||||
#endif /* _WIN32 */
|
||||
|
||||
uint16_t get_usb_code_for_current_locale(void)
|
||||
{
|
||||
#ifndef _WIN32 /* TODO: Win32 setlocale? */
|
||||
char *locale;
|
||||
char search_string[64];
|
||||
char *ptr;
|
||||
|
|
@ -1605,6 +1557,7 @@ uint16_t get_usb_code_for_current_locale(void)
|
|||
}
|
||||
#endif
|
||||
|
||||
#endif /* _WIN32 */
|
||||
/* Found nothing. */
|
||||
return 0x0;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue