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Fixed building with libusb not dynamicaly loaded

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This commit is contained in:
Sam Lantinga 2022-09-01 11:30:02 -07:00
parent 7708bf0f8a
commit 3f89d1704d
6 changed files with 77 additions and 32 deletions
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2
cmake/sdlchecks.cmake
View file

@ -1186,7 +1186,7 @@ macro(CheckHIDAPI)
set(HAVE_LIBUSB TRUE)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${LIBUSB_CFLAGS}")
if(HIDAPI_ONLY_LIBUSB)
list(APPEND EXTRA_LIBS ${LIBUSB_LIBS})
list(APPEND EXTRA_LIBS ${LIBUSB_LIBRARIES})
elseif(OS2)
set(SDL_LIBUSB_DYNAMIC "\"usb100.dll\"")
else()

1
configure.ac
View file

@ -3581,6 +3581,7 @@ CheckHIDAPI()
if test x$hidapi_support = xyes; then
if test x$have_libusb_h = xyes; then
AC_DEFINE(HAVE_LIBUSB)
EXTRA_CFLAGS="$EXTRA_CFLAGS $LIBUSB_CFLAGS"
if test x$require_hidapi_libusb = xyes; then
EXTRA_LDFLAGS="$EXTRA_LDFLAGS $LIBUSB_LIBS"

1
include/SDL_config.h.cmake
View file

@ -224,6 +224,7 @@
#cmakedefine HAVE_INOTIFY_INIT 1
#cmakedefine HAVE_INOTIFY_INIT1 1
#cmakedefine HAVE_INOTIFY 1
#cmakedefine HAVE_LIBUSB 1
#cmakedefine HAVE_O_CLOEXEC 1
/* Apple platforms might be building universal binaries, where Intel builds

1
include/SDL_config.h.in
View file

@ -227,6 +227,7 @@
#undef HAVE_IBUS_IBUS_H
#undef HAVE_IMMINTRIN_H
#undef HAVE_LIBUDEV_H
#undef HAVE_LIBUSB
#undef HAVE_LIBSAMPLERATE_H
#undef HAVE_LIBDECOR_H
#undef HAVE_LSXINTRIN_H

102
src/hidapi/SDL_hidapi.c
View file

@ -682,7 +682,7 @@ static const SDL_UDEV_Symbols *udev_ctx = NULL;
#endif /* HAVE_DRIVER_BACKEND */
#ifdef SDL_LIBUSB_DYNAMIC
#ifdef HAVE_LIBUSB
/* libusb HIDAPI Implementation */
/* Include this now, for our dynamically-loaded libusb context */
@ -817,6 +817,33 @@ SDL_libusb_get_string_descriptor(libusb_device_handle *dev,
#undef HIDAPI_H__
#include "libusb/hid.c"
#undef libusb_init
#undef libusb_exit
#undef libusb_get_device_list
#undef libusb_free_device_list
#undef libusb_get_device_descriptor
#undef libusb_get_active_config_descriptor
#undef libusb_get_config_descriptor
#undef libusb_free_config_descriptor
#undef libusb_get_bus_number
#undef libusb_get_device_address
#undef libusb_open
#undef libusb_close
#undef libusb_claim_interface
#undef libusb_release_interface
#undef libusb_kernel_driver_active
#undef libusb_detach_kernel_driver
#undef libusb_attach_kernel_driver
#undef libusb_set_interface_alt_setting
#undef libusb_alloc_transfer
#undef libusb_submit_transfer
#undef libusb_cancel_transfer
#undef libusb_free_transfer
#undef libusb_control_transfer
#undef libusb_interrupt_transfer
#undef libusb_handle_events
#undef libusb_handle_events_completed
#undef hid_device
#undef hid_device_
#undef hid_init
@ -844,7 +871,7 @@ SDL_libusb_get_string_descriptor(libusb_device_handle *dev,
#undef make_path
#undef read_thread
#endif /* SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_LIBUSB */
#endif /* !SDL_HIDAPI_DISABLED */
@ -899,7 +926,7 @@ static const struct hidapi_backend DRIVER_Backend = {
};
#endif /* HAVE_DRIVER_BACKEND */
#ifdef SDL_LIBUSB_DYNAMIC
#ifdef HAVE_LIBUSB
static const struct hidapi_backend LIBUSB_Backend = {
(void*)LIBUSB_hid_write,
(void*)LIBUSB_hid_read_timeout,
@ -914,7 +941,7 @@ static const struct hidapi_backend LIBUSB_Backend = {
(void*)LIBUSB_hid_get_indexed_string,
(void*)LIBUSB_hid_error
};
#endif /* SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_LIBUSB */
struct SDL_hid_device_
{
@ -924,7 +951,7 @@ struct SDL_hid_device_
};
static char device_magic;
#if HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || defined(SDL_LIBUSB_DYNAMIC)
#if HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || defined(HAVE_LIBUSB)
static SDL_hid_device *
CreateHIDDeviceWrapper(void *device, const struct hidapi_backend *backend)
@ -936,7 +963,7 @@ CreateHIDDeviceWrapper(void *device, const struct hidapi_backend *backend)
return wrapper;
}
#endif /* HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || HAVE_LIBUSB */
static void
DeleteHIDDeviceWrapper(SDL_hid_device *device)
@ -952,7 +979,7 @@ DeleteHIDDeviceWrapper(SDL_hid_device *device)
}
#if !SDL_HIDAPI_DISABLED
#if HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || defined(SDL_LIBUSB_DYNAMIC)
#if HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || defined(HAVE_LIBUSB)
#define COPY_IF_EXISTS(var) \
if (pSrc->var != NULL) { \
@ -989,7 +1016,7 @@ CopyHIDDeviceInfo(struct SDL_hid_device_info *pSrc, struct SDL_hid_device_info *
#undef COPY_IF_EXISTS
#undef WCOPY_IF_EXISTS
#endif /* HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || HAVE_LIBUSB */
#endif /* !SDL_HIDAPI_DISABLED */
static int SDL_hidapi_refcount = 0;
@ -1030,23 +1057,32 @@ int SDL_hid_init(void)
}
#endif
#ifdef SDL_LIBUSB_DYNAMIC
#ifdef HAVE_LIBUSB
if (SDL_getenv("SDL_HIDAPI_DISABLE_LIBUSB") != NULL) {
SDL_LogDebug(SDL_LOG_CATEGORY_INPUT,
"libusb disabled by SDL_HIDAPI_DISABLE_LIBUSB");
libusb_ctx.libhandle = NULL;
} else {
++attempts;
#ifdef SDL_LIBUSB_DYNAMIC
libusb_ctx.libhandle = SDL_LoadObject(SDL_LIBUSB_DYNAMIC);
#else
libusb_ctx.libhandle = (void *)1;
#endif
if (libusb_ctx.libhandle != NULL) {
SDL_bool loaded = SDL_TRUE;
#ifdef __OS2__
#ifdef SDL_LIBUSB_DYNAMIC
#define LOAD_LIBUSB_SYMBOL(func) \
if (!(libusb_ctx.func = SDL_LoadFunction(libusb_ctx.libhandle,"_libusb_" #func))) {loaded = SDL_FALSE;}
#else
#define LOAD_LIBUSB_SYMBOL(func) \
if (!(libusb_ctx.func = SDL_LoadFunction(libusb_ctx.libhandle, "libusb_" #func))) {loaded = SDL_FALSE;}
#endif
#else
#define LOAD_LIBUSB_SYMBOL(func) \
libusb_ctx.func = libusb_##func;
#endif
LOAD_LIBUSB_SYMBOL(init)
LOAD_LIBUSB_SYMBOL(exit)
LOAD_LIBUSB_SYMBOL(get_device_list)
@ -1076,18 +1112,22 @@ int SDL_hid_init(void)
#undef LOAD_LIBUSB_SYMBOL
if (!loaded) {
#ifdef SDL_LIBUSB_DYNAMIC
SDL_UnloadObject(libusb_ctx.libhandle);
#endif
libusb_ctx.libhandle = NULL;
/* SDL_LogWarn(SDL_LOG_CATEGORY_INPUT, SDL_LIBUSB_DYNAMIC " found but could not load function"); */
} else if (LIBUSB_hid_init() < 0) {
#ifdef SDL_LIBUSB_DYNAMIC
SDL_UnloadObject(libusb_ctx.libhandle);
#endif
libusb_ctx.libhandle = NULL;
} else {
++success;
}
}
}
#endif /* SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_LIBUSB */
#if HAVE_PLATFORM_BACKEND
++attempts;
@ -1133,13 +1173,15 @@ int SDL_hid_exit(void)
#endif /* __LINUX __ */
#endif /* HAVE_PLATFORM_BACKEND */
#ifdef SDL_LIBUSB_DYNAMIC
#ifdef HAVE_LIBUSB
if (libusb_ctx.libhandle) {
result |= LIBUSB_hid_exit();
#ifdef SDL_LIBUSB_DYNAMIC
SDL_UnloadObject(libusb_ctx.libhandle);
#endif
libusb_ctx.libhandle = NULL;
}
#endif /* SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_LIBUSB */
return result;
}
@ -1168,8 +1210,8 @@ Uint32 SDL_hid_device_change_count(void)
struct SDL_hid_device_info *SDL_hid_enumerate(unsigned short vendor_id, unsigned short product_id)
{
#if HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || defined(SDL_LIBUSB_DYNAMIC)
#ifdef SDL_LIBUSB_DYNAMIC
#if HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || defined(HAVE_LIBUSB)
#ifdef HAVE_LIBUSB
struct SDL_hid_device_info *usb_devs = NULL;
struct SDL_hid_device_info *usb_dev;
#endif
@ -1187,7 +1229,7 @@ struct SDL_hid_device_info *SDL_hid_enumerate(unsigned short vendor_id, unsigned
return NULL;
}
#ifdef SDL_LIBUSB_DYNAMIC
#ifdef HAVE_LIBUSB
if (libusb_ctx.libhandle) {
usb_devs = LIBUSB_hid_enumerate(vendor_id, product_id);
#ifdef DEBUG_HIDAPI
@ -1216,7 +1258,7 @@ struct SDL_hid_device_info *SDL_hid_enumerate(unsigned short vendor_id, unsigned
last = new_dev;
}
}
#endif /* SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_LIBUSB */
#ifdef HAVE_DRIVER_BACKEND
driver_devs = DRIVER_hid_enumerate(vendor_id, product_id);
@ -1246,7 +1288,7 @@ struct SDL_hid_device_info *SDL_hid_enumerate(unsigned short vendor_id, unsigned
raw_dev->manufacturer_string, raw_dev->product_string,
raw_dev->vendor_id, raw_dev->product_id);
#endif
#ifdef SDL_LIBUSB_DYNAMIC
#ifdef HAVE_LIBUSB
for (usb_dev = usb_devs; usb_dev; usb_dev = usb_dev->next) {
if (raw_dev->vendor_id == usb_dev->vendor_id &&
raw_dev->product_id == usb_dev->product_id &&
@ -1269,7 +1311,7 @@ struct SDL_hid_device_info *SDL_hid_enumerate(unsigned short vendor_id, unsigned
if (!bFound) {
new_dev = (struct SDL_hid_device_info*) SDL_malloc(sizeof(struct SDL_hid_device_info));
if (!new_dev) {
#ifdef SDL_LIBUSB_DYNAMIC
#ifdef HAVE_LIBUSB
if (libusb_ctx.libhandle) {
LIBUSB_hid_free_enumeration(usb_devs);
}
@ -1294,7 +1336,7 @@ struct SDL_hid_device_info *SDL_hid_enumerate(unsigned short vendor_id, unsigned
}
#endif /* HAVE_PLATFORM_BACKEND */
#ifdef SDL_LIBUSB_DYNAMIC
#ifdef HAVE_LIBUSB
if (libusb_ctx.libhandle) {
LIBUSB_hid_free_enumeration(usb_devs);
}
@ -1303,7 +1345,7 @@ struct SDL_hid_device_info *SDL_hid_enumerate(unsigned short vendor_id, unsigned
#else
return NULL;
#endif /* HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || HAVE_LIBUSB */
}
void SDL_hid_free_enumeration(struct SDL_hid_device_info *devs)
@ -1321,7 +1363,7 @@ void SDL_hid_free_enumeration(struct SDL_hid_device_info *devs)
SDL_hid_device *SDL_hid_open(unsigned short vendor_id, unsigned short product_id, const wchar_t *serial_number)
{
#if HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || defined(SDL_LIBUSB_DYNAMIC)
#if HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || defined(HAVE_LIBUSB)
void *pDevice = NULL;
if (SDL_hidapi_refcount == 0 && SDL_hid_init() != 0) {
@ -1341,21 +1383,21 @@ SDL_hid_device *SDL_hid_open(unsigned short vendor_id, unsigned short product_id
}
#endif /* HAVE_DRIVER_BACKEND */
#ifdef SDL_LIBUSB_DYNAMIC
#ifdef HAVE_LIBUSB
if (libusb_ctx.libhandle &&
(pDevice = LIBUSB_hid_open(vendor_id, product_id, serial_number)) != NULL) {
return CreateHIDDeviceWrapper(pDevice, &LIBUSB_Backend);
}
#endif /* SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_LIBUSB */
#endif /* HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || HAVE_LIBUSB */
return NULL;
}
SDL_hid_device *SDL_hid_open_path(const char *path, int bExclusive /* = false */)
{
#if HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || defined(SDL_LIBUSB_DYNAMIC)
#if HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || defined(HAVE_LIBUSB)
void *pDevice = NULL;
if (SDL_hidapi_refcount == 0 && SDL_hid_init() != 0) {
@ -1375,14 +1417,14 @@ SDL_hid_device *SDL_hid_open_path(const char *path, int bExclusive /* = false */
}
#endif /* HAVE_DRIVER_BACKEND */
#ifdef SDL_LIBUSB_DYNAMIC
#ifdef HAVE_LIBUSB
if (libusb_ctx.libhandle &&
(pDevice = LIBUSB_hid_open_path(path, bExclusive)) != NULL) {
return CreateHIDDeviceWrapper(pDevice, &LIBUSB_Backend);
}
#endif /* SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_LIBUSB */
#endif /* HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_PLATFORM_BACKEND || HAVE_DRIVER_BACKEND || HAVE_LIBUSB */
return NULL;
}
@ -1536,7 +1578,7 @@ void SDL_hid_ble_scan(SDL_bool active)
/* This is needed to enable input for Nyko and EVORETRO GameCube adaptors */
void SDL_EnableGameCubeAdaptors(void)
{
#ifdef SDL_LIBUSB_DYNAMIC
#ifdef HAVE_LIBUSB
libusb_context *context = NULL;
libusb_device **devs = NULL;
libusb_device_handle *handle = NULL;
@ -1585,7 +1627,7 @@ void SDL_EnableGameCubeAdaptors(void)
libusb_exit(context);
}
#endif /* SDL_LIBUSB_DYNAMIC */
#endif /* HAVE_LIBUSB */
}
#endif /* HAVE_ENABLE_GAMECUBE_ADAPTORS */

2
src/hidapi/SDL_hidapi_c.h
View file

@ -22,7 +22,7 @@
#ifdef SDL_JOYSTICK_HIDAPI
#ifdef SDL_LIBUSB_DYNAMIC
#ifdef HAVE_LIBUSB
#define HAVE_ENABLE_GAMECUBE_ADAPTORS
#endif