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|
/** @file
* @brief HID report descriptor - XML sink - item output
*
* Copyright (C) 2010 Nikolai Kondrashov
*
* This file is part of hidrd.
*
* Hidrd 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.
*
* Hidrd 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.
*
* You should have received a copy of the GNU General Public License
* along with hidrd; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* @author Nikolai Kondrashov <spbnick@gmail.com>
*
* @(#) $Id: element.h 283 2010-03-20 12:58:33Z spb_nick $
*/
#include <errno.h>
#include "hidrd/util/str.h"
#include "element.h"
#include "group.h"
#include "item.h"
#define ATTR(_name, _fmt, _args...) \
XML_SNK_ELEMENT_NT_ATTR, #_name, HIDRD_FMT_TYPE_##_fmt, ##_args
#define CONTENT(_fmt, _args...) \
XML_SNK_ELEMENT_NT_CONTENT, HIDRD_FMT_TYPE_##_fmt, ##_args
#define COMMENT(_fmt, _args...) \
XML_SNK_ELEMENT_NT_COMMENT, HIDRD_FMT_TYPE_##_fmt, ##_args
#define ADD_SIMPLE(_name, _args...) \
xml_snk_element_add(xml_snk, false, #_name, ##_args, \
XML_SNK_ELEMENT_NT_NONE)
#define GROUP_START(_name, _args...) \
xml_snk_group_start(xml_snk, #_name, ##_args, XML_SNK_ELEMENT_NT_NONE)
#define GROUP_END(_name) \
xml_snk_group_end(xml_snk, #_name)
#define CASE_SIMPLE_S32(_TYPE, _NAME, _name) \
case HIDRD_ITEM_##_TYPE##_TAG_##_NAME: \
return ADD_SIMPLE( \
_name, \
CONTENT(S32, \
(int32_t)hidrd_item_##_name##_get_value(item)))
#define CASE_SIMPLE_U32(_TYPE, _NAME, _name) \
case HIDRD_ITEM_##_TYPE##_TAG_##_NAME: \
return ADD_SIMPLE( \
_name, \
CONTENT(U32, \
(uint32_t) \
hidrd_item_##_name##_get_value(item)))
static bool
xml_snk_item_main_bitmap(hidrd_xml_snk_inst *xml_snk,
const hidrd_item *item)
{
uint8_t bit;
char name[6];
assert(xml_snk->cur == NULL);
assert(hidrd_item_main_valid(item));
assert(hidrd_item_input_valid(item) ||
hidrd_item_output_valid(item) ||
hidrd_item_feature_valid(item));
#define BIT(_idx, _on_name) \
do { \
if (hidrd_item_main_get_bit(item, _idx) && \
!ADD_SIMPLE(_on_name)) \
return false; \
} while (0)
BIT(0, constant);
BIT(1, variable);
BIT(2, relative);
BIT(3, wrap);
BIT(4, non_linear);
BIT(5, no_preferred);
BIT(6, null_state);
if (hidrd_item_main_get_tag(item) == HIDRD_ITEM_MAIN_TAG_INPUT)
BIT(7, bit7);
else
BIT(7, volatile);
BIT(8, buffered_bytes);
#undef BIT
for (bit = 9; bit < 32; bit++)
if (hidrd_item_main_get_bit(item, bit))
{
if (snprintf(name, sizeof(name), "bit%hhu", bit) >=
(int)sizeof(name))
return false;
if (!xml_snk_element_add(xml_snk, false, name,
XML_SNK_ELEMENT_NT_NONE))
return false;
}
return true;
}
static bool
xml_snk_item_main(hidrd_xml_snk_inst *xml_snk,
const hidrd_item *item)
{
hidrd_item_main_tag tag;
assert(hidrd_item_main_valid(item));
switch (tag = hidrd_item_main_get_tag(item))
{
case HIDRD_ITEM_MAIN_TAG_COLLECTION:
return GROUP_START(
COLLECTION,
ATTR(type, STROWN,
HIDRD_NUM_TO_ALT_STR2_1(
item_collection_type, 0,
hidrd_item_collection_get_type(item),
token, lc, dec)));
case HIDRD_ITEM_MAIN_TAG_END_COLLECTION:
return GROUP_END(COLLECTION);
case HIDRD_ITEM_MAIN_TAG_INPUT:
case HIDRD_ITEM_MAIN_TAG_OUTPUT:
case HIDRD_ITEM_MAIN_TAG_FEATURE:
{
char *token;
bool result;
assert(hidrd_item_main_tag_known(tag));
token = hidrd_item_main_tag_to_token(tag);
assert(token != NULL || errno != 0);
if (token == NULL)
{
XML_ERR("failed to allocate a main tag token");
return false;
}
token = hidrd_str_lc(token);
result = xml_snk_element_add(xml_snk, true, token,
XML_SNK_ELEMENT_NT_NONE);
free(token);
if (!result)
return false;
if (!xml_snk_item_main_bitmap(xml_snk, item))
return false;
xml_snk->prnt = xml_snk->prnt->parent;
return true;
}
default:
return ADD_SIMPLE(
main,
ATTR(tag, STROWN,
HIDRD_NUM_TO_ALT_STR2_1(
item_main_tag, 0, tag, token, lc, dec)),
CONTENT(
HEX,
/* We promise we won't change it */
hidrd_item_short_get_data((hidrd_item *)item)),
hidrd_item_short_get_data_bytes(item));
}
}
static bool
xml_snk_item_unit_generic(hidrd_xml_snk_inst *xml_snk,
hidrd_unit unit)
{
bool success = false;
bool inside = false;
hidrd_unit_exp exp;
if (!xml_snk_element_add(xml_snk, true, "generic",
ATTR(system, STROWN,
HIDRD_NUM_TO_ALT_STR2_1(
unit_system, 0,
hidrd_unit_get_system(unit),
token, lc, dec)),
XML_SNK_ELEMENT_NT_NONE))
goto cleanup;
inside = true;
#define EXP(_name) \
do { \
exp = hidrd_unit_get_##_name(unit); \
if (exp != HIDRD_UNIT_EXP_0) \
{ \
if (exp == HIDRD_UNIT_EXP_1) \
{ \
if (!ADD_SIMPLE(_name)) \
goto cleanup; \
} \
else \
{ \
if (!ADD_SIMPLE(_name, \
CONTENT(S32, \
(int32_t)hidrd_unit_exp_to_int(exp)))) \
goto cleanup; \
} \
} \
} while (0)
EXP(length);
EXP(mass);
EXP(time);
EXP(temperature);
EXP(current);
EXP(luminous_intensity);
#undef EXP
success = true;
cleanup:
if (inside)
xml_snk->prnt = xml_snk->prnt->parent;
return success;
}
static bool
xml_snk_item_unit_specific(hidrd_xml_snk_inst *xml_snk,
hidrd_unit unit)
{
bool success = false;
hidrd_unit_system system;
char *token;
bool inside = false;
hidrd_unit_exp exp;
assert(hidrd_unit_valid(unit));
system = hidrd_unit_get_system(unit);
assert(hidrd_unit_system_known(system));
token = hidrd_unit_system_to_token(system);
assert(token != NULL || errno != 0);
if (token == NULL)
XML_ERR_CLNP("failed to allocate unit system token");
token = hidrd_str_lc(token);
if (!xml_snk_element_add(xml_snk, true,
token,
XML_SNK_ELEMENT_NT_NONE))
goto cleanup;
free(token);
token = NULL;
inside = true;
#define EXP(_gen_name, _spec_expr) \
do { \
exp = hidrd_unit_get_##_gen_name(unit); \
if (exp != HIDRD_UNIT_EXP_0) \
{ \
const char *_spec_name = (_spec_expr); \
\
if (exp == HIDRD_UNIT_EXP_1) \
{ \
if (!xml_snk_element_add(xml_snk, false, _spec_name, \
XML_SNK_ELEMENT_NT_NONE)) \
goto cleanup; \
} \
else \
{ \
if (!xml_snk_element_add( \
xml_snk, false, _spec_name, \
CONTENT(S32, \
(int32_t)hidrd_unit_exp_to_int(exp)), \
XML_SNK_ELEMENT_NT_NONE)) \
goto cleanup; \
} \
} \
} while (0)
EXP(length,
(system == HIDRD_UNIT_SYSTEM_SI_LINEAR)
? "centimeter"
: (system == HIDRD_UNIT_SYSTEM_SI_ROTATION)
? "radians"
: (system == HIDRD_UNIT_SYSTEM_ENGLISH_LINEAR)
? "inch"
: "degrees");
EXP(mass,
(system == HIDRD_UNIT_SYSTEM_SI_LINEAR ||
system == HIDRD_UNIT_SYSTEM_SI_ROTATION)
? "gram"
: "slug");
EXP(time, "seconds");
EXP(temperature,
(system == HIDRD_UNIT_SYSTEM_SI_LINEAR ||
system == HIDRD_UNIT_SYSTEM_SI_ROTATION)
? "kelvin"
: "fahrenheit");
EXP(current, "ampere");
EXP(luminous_intensity, "candela");
#undef EXP
success = true;
cleanup:
if (inside)
xml_snk->prnt = xml_snk->prnt->parent;
free(token);
return success;
}
static bool
xml_snk_item_unit(hidrd_xml_snk_inst *xml_snk,
const hidrd_item *item)
{
hidrd_unit unit;
bool success = false;
bool inside = false;
assert(hidrd_item_unit_valid(item));
unit = hidrd_item_unit_get_value(item);
if (!xml_snk_element_add(xml_snk, true, "unit",
XML_SNK_ELEMENT_NT_NONE))
goto cleanup;
inside = true;
/*
* If the unit value could be interpreted with our API and it does
* contain something meaningful.
*/
/* If the unit is "none" - i.e. there is no units */
if (unit == HIDRD_UNIT_NONE)
success = ADD_SIMPLE(none);
/*
* If the unit is void (indicates no particular units) or
* unknown, (cannot be interpreted by our API)
*/
else if (hidrd_unit_void(unit) || !hidrd_unit_known(unit))
success =
ADD_SIMPLE(
value,
CONTENT(HEX,
/* We promise we won't change it */
hidrd_item_short_get_data((hidrd_item *)item),
hidrd_item_short_get_data_bytes(item)));
else
/* If the unit system is known to us */
success = hidrd_unit_system_known(hidrd_unit_get_system(unit))
? xml_snk_item_unit_specific(xml_snk, unit)
: xml_snk_item_unit_generic(xml_snk, unit);
cleanup:
if (inside)
xml_snk->prnt = xml_snk->prnt->parent;
return success;
}
static bool
xml_snk_item_global(hidrd_xml_snk_inst *xml_snk,
const hidrd_item *item)
{
hidrd_item_global_tag tag;
assert(hidrd_item_global_valid(item));
switch (tag = hidrd_item_global_get_tag(item))
{
CASE_SIMPLE_S32(GLOBAL, LOGICAL_MINIMUM, logical_minimum);
CASE_SIMPLE_S32(GLOBAL, LOGICAL_MAXIMUM, logical_maximum);
CASE_SIMPLE_S32(GLOBAL, PHYSICAL_MINIMUM, physical_minimum);
CASE_SIMPLE_S32(GLOBAL, PHYSICAL_MAXIMUM, physical_maximum);
CASE_SIMPLE_S32(GLOBAL, UNIT_EXPONENT, unit_exponent);
CASE_SIMPLE_U32(GLOBAL, REPORT_SIZE, report_size);
CASE_SIMPLE_U32(GLOBAL, REPORT_ID, report_id);
CASE_SIMPLE_U32(GLOBAL, REPORT_COUNT, report_count);
case HIDRD_ITEM_GLOBAL_TAG_UNIT:
return xml_snk_item_unit(xml_snk, item);
case HIDRD_ITEM_GLOBAL_TAG_USAGE_PAGE:
xml_snk->state->usage_page =
hidrd_item_usage_page_get_value(item);
return ADD_SIMPLE(
usage_page,
CONTENT(STROWN,
HIDRD_NUM_TO_ALT_STR2_1(
usage_page, 0,
hidrd_item_usage_page_get_value(item),
token, lc, hex)),
COMMENT(STROWN,
hidrd_str_apada(
hidrd_str_uc_first(
hidrd_usage_page_desc_str(
hidrd_item_usage_page_get_value(
item))))));
case HIDRD_ITEM_GLOBAL_TAG_PUSH:
{
hidrd_xml_snk_state *new_state;
/* Push state */
new_state = malloc(sizeof(*new_state));
if (new_state == NULL)
{
XML_ERR("failed to allocate a state table");
return false;
}
memcpy(new_state, xml_snk->state, sizeof(*new_state));
new_state->prev = xml_snk->state;
xml_snk->state = new_state;
return GROUP_START(PUSH);
}
case HIDRD_ITEM_GLOBAL_TAG_POP:
{
hidrd_xml_snk_state *prev_state;
/* Pop state, if possible */
prev_state = xml_snk->state->prev;
if (prev_state != NULL)
{
free(xml_snk->state);
xml_snk->state = prev_state;
}
return GROUP_END(PUSH);
}
default:
return ADD_SIMPLE(
global,
ATTR(tag, STROWN,
HIDRD_NUM_TO_ALT_STR2_1(
item_global_tag, 0, tag, token, lc, dec)),
CONTENT(HEX,
/* We promise we won't change it */
hidrd_item_short_get_data((hidrd_item *)item)),
hidrd_item_short_get_data_bytes(item));
}
}
static char *
hidrd_usage_to_id_hex(hidrd_usage usage)
{
return hidrd_usage_id_to_hex(hidrd_usage_get_id(usage));
}
static bool
xml_snk_item_usage(hidrd_xml_snk_inst *xml_snk,
const char *name,
hidrd_usage usage)
{
bool success = false;
char *token_or_hex = NULL;
char *desc = NULL;
if (!hidrd_usage_defined_page(usage))
usage = hidrd_usage_set_page(usage, xml_snk->state->usage_page);
if (hidrd_usage_get_page(usage) == xml_snk->state->usage_page)
{
token_or_hex = HIDRD_NUM_TO_ALT_STR2_1(usage, 0, usage,
token, lc, id_hex);
if (token_or_hex == NULL)
XML_ERR_CLNP("failed to convert usage to string");
desc = hidrd_usage_desc_id_str(usage);
if (desc == NULL)
XML_ERR_CLNP("failed to format usage description");
}
else
{
token_or_hex = HIDRD_NUM_TO_ALT_STR2_1(usage, 0, usage,
token, lc, hex);
if (token_or_hex == NULL)
XML_ERR_CLNP("failed to convert usage to string");
desc = hidrd_usage_desc_str(usage);
if (desc == NULL)
XML_ERR_CLNP("failed to format usage description");
}
if (*desc == '\0')
{
success = xml_snk_element_add(xml_snk, false, name,
CONTENT(STROWN, token_or_hex),
XML_SNK_ELEMENT_NT_NONE);
token_or_hex = NULL;
}
else
{
success = xml_snk_element_add(xml_snk, false, name,
CONTENT(STROWN, token_or_hex),
COMMENT(STROWN,
hidrd_str_apada(
hidrd_str_uc_first(desc))),
XML_SNK_ELEMENT_NT_NONE);
token_or_hex = NULL;
desc = NULL;
}
cleanup:
free(desc);
free(token_or_hex);
return success;
}
static bool
xml_snk_item_local(hidrd_xml_snk_inst *xml_snk,
const hidrd_item *item)
{
hidrd_item_local_tag tag;
assert(hidrd_item_local_valid(item));
switch (tag = hidrd_item_local_get_tag(item))
{
CASE_SIMPLE_U32(LOCAL, DESIGNATOR_INDEX, designator_index);
CASE_SIMPLE_U32(LOCAL, DESIGNATOR_MINIMUM, designator_minimum);
CASE_SIMPLE_U32(LOCAL, DESIGNATOR_MAXIMUM, designator_maximum);
CASE_SIMPLE_U32(LOCAL, STRING_INDEX, string_index);
CASE_SIMPLE_U32(LOCAL, STRING_MINIMUM, string_minimum);
CASE_SIMPLE_U32(LOCAL, STRING_MAXIMUM, string_maximum);
case HIDRD_ITEM_LOCAL_TAG_USAGE:
return xml_snk_item_usage(xml_snk, "usage",
hidrd_item_usage_get_value(item));
case HIDRD_ITEM_LOCAL_TAG_USAGE_MINIMUM:
return xml_snk_item_usage(
xml_snk, "usage_minimum",
hidrd_item_usage_minimum_get_value(item));
case HIDRD_ITEM_LOCAL_TAG_USAGE_MAXIMUM:
return xml_snk_item_usage(
xml_snk, "usage_maximum",
hidrd_item_usage_maximum_get_value(item));
case HIDRD_ITEM_LOCAL_TAG_DELIMITER:
return (hidrd_item_delimiter_get_value(item) ==
HIDRD_ITEM_DELIMITER_SET_OPEN)
? GROUP_START(SET)
: GROUP_END(SET);
default:
return ADD_SIMPLE(
local,
ATTR(tag, STROWN,
HIDRD_NUM_TO_ALT_STR2_1(
item_local_tag, 0, tag, token, lc, dec)),
CONTENT(HEX,
/* We promise we won't change it */
hidrd_item_short_get_data((hidrd_item *)item)),
hidrd_item_short_get_data_bytes(item));
}
}
static bool
xml_snk_item_short(hidrd_xml_snk_inst *xml_snk,
const hidrd_item *item)
{
assert(hidrd_item_short_valid(item));
switch (hidrd_item_short_get_type(item))
{
case HIDRD_ITEM_SHORT_TYPE_MAIN:
return xml_snk_item_main(xml_snk, item);
case HIDRD_ITEM_SHORT_TYPE_GLOBAL:
return xml_snk_item_global(xml_snk, item);
case HIDRD_ITEM_SHORT_TYPE_LOCAL:
return xml_snk_item_local(xml_snk, item);
default:
return ADD_SIMPLE(short,
ATTR(type, STROWN,
HIDRD_NUM_TO_ALT_STR2_1(
item_short_type, 0,
hidrd_item_short_get_type(item),
token, lc, dec)),
ATTR(tag, STROWN,
hidrd_item_short_tag_to_dec(
hidrd_item_short_get_tag(item))),
CONTENT(HEX,
/* We promise we won't change it */
hidrd_item_short_get_data((hidrd_item *)item)),
hidrd_item_short_get_data_bytes(item));
}
}
bool
xml_snk_item_basic(hidrd_xml_snk_inst *xml_snk,
const hidrd_item *item)
{
switch (hidrd_item_basic_get_format(item))
{
case HIDRD_ITEM_BASIC_FORMAT_LONG:
return ADD_SIMPLE(
long,
ATTR(tag, U32,
(uint32_t)hidrd_item_long_get_tag(item)),
CONTENT(
HEX,
/* We promise we won't change it */
hidrd_item_long_get_data((hidrd_item *)item)),
(size_t)hidrd_item_long_get_data_size(item));
case HIDRD_ITEM_BASIC_FORMAT_SHORT:
return xml_snk_item_short(xml_snk, item);
default:
return ADD_SIMPLE(basic,
ATTR(type, STROWN,
HIDRD_NUM_TO_ALT_STR2_1(
item_basic_type, 0,
hidrd_item_basic_get_type(item),
token, lc, dec)),
ATTR(tag, STROWN,
hidrd_item_basic_tag_to_dec(
hidrd_item_basic_get_tag(item))),
ATTR(tag, U32,
(uint32_t)hidrd_item_basic_get_data_bytes(item)),
CONTENT(HEX,
/* We promise we won't change it */
hidrd_item_basic_get_data((hidrd_item *)item)),
hidrd_item_basic_get_data_bytes(item));
}
}
|
