items.h

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00001 /*
00002  * Copyright (c) 2010 Vojtech Horky
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  *
00009  * - Redistributions of source code must retain the above copyright
00010  *   notice, this list of conditions and the following disclaimer.
00011  * - Redistributions in binary form must reproduce the above copyright
00012  *   notice, this list of conditions and the following disclaimer in the
00013  *   documentation and/or other materials provided with the distribution.
00014  * - The name of the author may not be used to endorse or promote products
00015  *   derived from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
00018  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00019  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
00020  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
00021  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
00022  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00023  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00024  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00025  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
00026  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00027  */
00028 
00035 #ifndef VUK_ITEM_H_
00036 #define VUK_ITEM_H_
00037 
00038 #include <sys/types.h>
00039 
00040 typedef uint8_t report_descriptor_data_t[];
00041 
00042 /* Item types. */
00043 #define ITEM_MAIN 0
00044 #define ITEM_GLOBAL 1
00045 #define ITEM_LOCAL 2
00046 
00047 
00048 
00049 /* Item tags. */
00050 
00051 /* Main item tags. */
00052 #define TAG_INPUT 8
00053 #define TAG_OUTPUT 9
00054 #define TAG_FEATURE 11
00055 #define TAG_COLLECTION 10
00056 #define TAG_END_COLLECTION 12
00057 
00058 /* Global item tags. */
00059 #define TAG_USAGE_PAGE 0
00060 #define TAG_LOGICAL_MINIMUM 1
00061 #define TAG_LOGICAL_MAXIMUM 2
00062 #define TAG_REPORT_SIZE 7
00063 #define TAG_REPORT_COUNT 9
00064 
00065 /* Local item tags. */
00066 #define TAG_USAGE 0
00067 #define TAG_USAGE_MINIMUM 1
00068 #define TAG_USAGE_MAXIMUM 2
00069 
00070 
00071 /* Bits for Input, Output and Feature items. */
00072 #define _IOF(value, shift) ((value) << (shift))
00073 #define IOF_DATA _IOF(0, 0)
00074 #define IOF_CONSTANT _IOF(1, 0)
00075 #define IOF_ARRAY _IOF(0, 1)
00076 #define IOF_VARIABLE _IOF(1, 1)
00077 #define IOF_ABSOLUTE _IOF(0, 2)
00078 #define IOF_RELATIVE _IOF(1, 2)
00079 /* ... */
00080 
00081 /* Collection types. */
00082 #define COLLECTION_PHYSICAL 0x00
00083 #define COLLECTION_APPLICATION 0x01
00084 
00085 
00091 #define BUILD_ITEM_PREFIX(size, type, tag) \
00092         ((size) | ((type) << 2) | ((tag) << 4))
00093 
00098 #define ITEM_CREATE0(type, tag) \
00099         BUILD_ITEM_PREFIX(0, type, tag)
00100 
00106 #define ITEM_CREATE1(type, tag, data) \
00107         BUILD_ITEM_PREFIX(1, type, tag), data
00108 
00109 
00110 #endif
00111 

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