Atlas - SDL_hidapi_libusb.h
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1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2025 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21
22/* Define standard library functions in terms of SDL */
23
24/* #pragma push_macro/pop_macro works correctly only as of gcc >= 4.4.3
25   clang-3.0 _seems_ to be OK. */
26#pragma push_macro("calloc")
27#pragma push_macro("malloc")
28#pragma push_macro("realloc")
29#pragma push_macro("free")
30#pragma push_macro("iconv_t")
31#pragma push_macro("iconv")
32#pragma push_macro("iconv_open")
33#pragma push_macro("iconv_close")
34#pragma push_macro("setlocale")
35#pragma push_macro("snprintf")
36#pragma push_macro("strcmp")
37#pragma push_macro("strdup")
38#pragma push_macro("strncpy")
39#pragma push_macro("tolower")
40#pragma push_macro("wcscmp")
41#pragma push_macro("wcsdup")
42#pragma push_macro("wcsncpy")
43
44#undef calloc
45#undef malloc
46#undef realloc
47#undef free
48#undef iconv_t
49#undef iconv
50#undef iconv_open
51#undef iconv_close
52#undef setlocale
53#undef snprintf
54#undef strcmp
55#undef strdup
56#undef strncpy
57#undef tolower
58#undef wcscmp
59#undef wcsdup
60#undef wcsncpy
61
62#define calloc          SDL_calloc
63#define malloc          SDL_malloc
64#define realloc         SDL_realloc
65#define free            SDL_free
66#define iconv_t         SDL_iconv_t
67#ifndef ICONV_CONST
68#define ICONV_CONST
69#define UNDEF_ICONV_CONST
70#endif
71#define iconv(a,b,c,d,e) SDL_iconv(a, (const char **)b, c, d, e)
72#define iconv_open      SDL_iconv_open
73#define iconv_close     SDL_iconv_close
74#define setlocale(X, Y) NULL
75#define snprintf        SDL_snprintf
76#define strcmp          SDL_strcmp
77#define strdup          SDL_strdup
78#define strncpy         SDL_strlcpy
79#define tolower         SDL_tolower
80#define wcscmp          SDL_wcscmp
81#define wcsdup          SDL_wcsdup
82#define wcsncpy         SDL_wcslcpy
83
84
85/* this is awkwardly inlined, so we need to re-implement it here
86 * so we can override the libusb_control_transfer call */
87static int SDL_libusb_get_string_descriptor(libusb_device_handle *dev,
88                                 uint8_t descriptor_index, uint16_t lang_id,
89                                 unsigned char *data, int length)
90{
91    return libusb_control_transfer(dev, LIBUSB_ENDPOINT_IN | 0x0, LIBUSB_REQUEST_GET_DESCRIPTOR, (LIBUSB_DT_STRING << 8) | descriptor_index, lang_id,
92                                   data, (uint16_t)length, 1000); /* Endpoint 0 IN */
93}
94#define libusb_get_string_descriptor SDL_libusb_get_string_descriptor
95
96/* this is inlined, except on FreeBSD, so we need to re-implement it here */
97static void SDL_libusb_fill_interrupt_transfer(
98	struct libusb_transfer *transfer, libusb_device_handle *dev_handle,
99	unsigned char endpoint, unsigned char *buffer, int length,
100	libusb_transfer_cb_fn callback, void *user_data, unsigned int timeout)
101{
102	transfer->dev_handle = dev_handle;
103	transfer->endpoint = endpoint;
104	transfer->type = LIBUSB_TRANSFER_TYPE_INTERRUPT;
105	transfer->timeout = timeout;
106	transfer->buffer = buffer;
107	transfer->length = length;
108	transfer->user_data = user_data;
109	transfer->callback = callback;
110}
111#define libusb_fill_interrupt_transfer SDL_libusb_fill_interrupt_transfer
112
113#define HIDAPI_THREAD_MODEL_INCLUDE "hidapi_thread_sdl.h"
114#ifndef LIBUSB_API_VERSION
115#ifdef LIBUSBX_API_VERSION
116#define LIBUSB_API_VERSION LIBUSBX_API_VERSION
117#else
118#define LIBUSB_API_VERSION 0x0
119#endif
120#endif
121/* we need libusb >= 1.0.16 because of libusb_get_port_numbers */
122/* we don't need libusb_wrap_sys_device: */
123#define HIDAPI_TARGET_LIBUSB_API_VERSION 0x01000102
124
125#undef HIDAPI_H__
126#include "libusb/hid.c"
127
128/* restore libc function macros */
129#ifdef UNDEF_ICONV_CONST
130#undef ICONV_CONST
131#undef UNDEF_ICONV_CONST
132#endif
133#pragma pop_macro("calloc")
134#pragma pop_macro("malloc")
135#pragma pop_macro("realloc")
136#pragma pop_macro("free")
137#pragma pop_macro("iconv_t")
138#pragma pop_macro("iconv")
139#pragma pop_macro("iconv_open")
140#pragma pop_macro("iconv_close")
141#pragma pop_macro("setlocale")
142#pragma pop_macro("snprintf")
143#pragma pop_macro("strcmp")
144#pragma pop_macro("strdup")
145#pragma pop_macro("strncpy")
146#pragma pop_macro("tolower")
147#pragma pop_macro("wcscmp")
148#pragma pop_macro("wcsdup")
149#pragma pop_macro("wcsncpy")
150
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