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/*
* Physical->logical button mapping
*
* Copyright (C) 2010-2011 Michael Buesch <m@bues.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "buttonmapping.h"
#include <string.h>
#include <errno.h>
int razer_create_buttonmap(void *buffer, size_t bufsize,
struct razer_buttonmapping *mappings, size_t nr_mappings,
unsigned int struct_spacing)
{
uint8_t *buf = buffer;
struct razer_buttonmapping *mapping;
size_t i, bufptr = 0;
memset(buffer, 0, bufsize);
for (i = 0; i < nr_mappings; i++) {
mapping = &mappings[i];
if (bufptr + 2 >= bufsize) {
razer_error("razer_create_buttonmap: Buffer overflow\n");
return -ENOSPC;
}
buf[bufptr + 0] = mapping->physical;
buf[bufptr + 1] = mapping->logical;
bufptr += 2;
bufptr += struct_spacing;
}
return 0;
}
int razer_parse_buttonmap(void *rawdata, size_t rawsize,
struct razer_buttonmapping *mappings, size_t nr_mappings,
unsigned int struct_spacing)
{
uint8_t *raw = rawdata;
size_t rawptr = 0, count;
struct razer_buttonmapping mapping, *target;
memset(mappings, 0, nr_mappings * sizeof(*mappings));
target = mappings;
for (count = 0; count < nr_mappings; count++) {
if (rawptr + 2 >= rawsize) {
razer_error("razer_parse_buttonmap: Raw data does not "
"contain all mappings\n");
return -EINVAL;
}
mapping.physical = raw[rawptr + 0];
mapping.logical = raw[rawptr + 1];
/*FIXME
if (mapping.physical == 0) {
razer_error("razer_parse_buttonmap: Physical mapping for %u "
"is invalid\n", (unsigned int)count);
return -EINVAL;
}
*/
/*FIXME triggers for lachesis5k6
if (mapping.logical == 0) {
razer_error("razer_parse_buttonmap: Logical mapping for 0x%02X "
"is invalid\n", mapping.physical);
return -EINVAL;
}
*/
target->physical = mapping.physical;
target->logical = mapping.logical;
rawptr += 2;
if (!razer_buffer_is_all_zero(&raw[rawptr],
min(struct_spacing, rawsize - rawptr))) {
razer_debug("razer_parse_buttonmap: Buttonmap spacing contains "
"nonzero data\n");
}
rawptr += struct_spacing;
target++;
}
return 0;
}
struct razer_button_function * razer_get_buttonfunction_by_id(
struct razer_button_function *functions, size_t nr_functions,
uint8_t logical_id)
{
struct razer_button_function *func = NULL;
size_t i;
for (i = 0; i < nr_functions; i++) {
if (functions[i].id == logical_id) {
func = &functions[i];
break;
}
}
return func;
}
struct razer_button_function * razer_get_buttonfunction_by_button(
struct razer_buttonmapping *mappings, size_t nr_mappings,
struct razer_button_function *functions, size_t nr_functions,
const struct razer_button *button)
{
struct razer_buttonmapping *mapping;
mapping = razer_get_buttonmapping_by_physid(mappings, nr_mappings,
button->id);
if (!mapping)
return NULL;
return razer_get_buttonfunction_by_id(functions, nr_functions,
mapping->logical);
}
struct razer_buttonmapping * razer_get_buttonmapping_by_physid(
struct razer_buttonmapping *mappings, size_t nr_mappings,
uint8_t physical_id)
{
struct razer_buttonmapping *mapping = NULL;
size_t i;
for (i = 0; i < nr_mappings; i++) {
if (mappings[i].physical == physical_id) {
mapping = &mappings[i];
break;
}
}
return mapping;
}
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