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/*
* Human Input Devices
*
* Copyright (C) 2015 Aric Stewart
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winternl.h"
#include "winioctl.h"
#include "ddk/wdm.h"
#include "hidusage.h"
#include "ddk/hidpi.h"
#include "wine/hid.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(hidp);
static NTSTATUS get_value_caps_range( struct hid_preparsed_data *preparsed, HIDP_REPORT_TYPE report_type, ULONG report_len,
const struct hid_value_caps **caps, const struct hid_value_caps **caps_end )
{
if (!preparsed || preparsed->magic != HID_MAGIC) return HIDP_STATUS_INVALID_PREPARSED_DATA;
switch (report_type)
{
case HidP_Input:
if (report_len && report_len != preparsed->caps.InputReportByteLength)
return HIDP_STATUS_INVALID_REPORT_LENGTH;
*caps = HID_INPUT_VALUE_CAPS( preparsed );
break;
case HidP_Output:
if (report_len && report_len != preparsed->caps.OutputReportByteLength)
return HIDP_STATUS_INVALID_REPORT_LENGTH;
*caps = HID_OUTPUT_VALUE_CAPS( preparsed );
break;
case HidP_Feature:
if (report_len && report_len != preparsed->caps.FeatureReportByteLength)
return HIDP_STATUS_INVALID_REPORT_LENGTH;
*caps = HID_FEATURE_VALUE_CAPS( preparsed );
break;
default:
return HIDP_STATUS_INVALID_REPORT_TYPE;
}
*caps_end = *caps + preparsed->value_caps_count[report_type];
return HIDP_STATUS_SUCCESS;
}
struct caps_filter
{
BOOLEAN buttons;
BOOLEAN values;
BOOLEAN array;
USAGE usage_page;
USHORT collection;
USAGE usage;
UCHAR report_id;
};
static BOOL match_value_caps( const struct hid_value_caps *caps, const struct caps_filter *filter )
{
if (!caps->usage_min && !caps->usage_max) return FALSE;
if (filter->buttons && !HID_VALUE_CAPS_IS_BUTTON( caps )) return FALSE;
if (filter->values && HID_VALUE_CAPS_IS_BUTTON( caps )) return FALSE;
if (filter->usage_page && filter->usage_page != caps->usage_page) return FALSE;
if (filter->collection && filter->collection != caps->link_collection) return FALSE;
if (!filter->usage) return TRUE;
return caps->usage_min <= filter->usage && caps->usage_max >= filter->usage;
}
typedef NTSTATUS (*enum_value_caps_callback)( const struct hid_value_caps *caps, void *user );
static NTSTATUS enum_value_caps( struct hid_preparsed_data *preparsed, HIDP_REPORT_TYPE report_type,
ULONG report_len, const struct caps_filter *filter,
enum_value_caps_callback callback, void *user, USHORT *count )
{
const struct hid_value_caps *caps, *caps_end;
NTSTATUS status;
BOOL incompatible = FALSE;
LONG remaining = *count;
for (status = get_value_caps_range( preparsed, report_type, report_len, &caps, &caps_end );
status == HIDP_STATUS_SUCCESS && caps != caps_end; caps++)
{
if (!match_value_caps( caps, filter )) continue;
if (filter->report_id && caps->report_id != filter->report_id) incompatible = TRUE;
else if (filter->array && (caps->is_range || caps->report_count <= 1)) return HIDP_STATUS_NOT_VALUE_ARRAY;
else if (remaining-- > 0) status = callback( caps, user );
}
if (status == HIDP_STATUS_NULL) status = HIDP_STATUS_SUCCESS;
if (status != HIDP_STATUS_SUCCESS) return status;
*count -= remaining;
if (*count == 0) return incompatible ? HIDP_STATUS_INCOMPATIBLE_REPORT_ID : HIDP_STATUS_USAGE_NOT_FOUND;
if (remaining < 0) return HIDP_STATUS_BUFFER_TOO_SMALL;
return HIDP_STATUS_SUCCESS;
}
/* copy count bits from src, starting at (-shift) bit if < 0, to dst starting at (shift) bit if > 0 */
static void copy_bits( unsigned char *dst, const unsigned char *src, int count, int shift )
{
unsigned char bits, mask;
size_t src_shift = shift < 0 ? (-shift & 7) : 0;
size_t dst_shift = shift > 0 ? (shift & 7) : 0;
if (shift < 0) src += -shift / 8;
if (shift > 0) dst += shift / 8;
if (src_shift == 0 && dst_shift == 0)
{
memcpy( dst, src, count / 8 );
dst += count / 8;
src += count / 8;
count &= 7;
}
if (!count) return;
bits = *dst << (8 - dst_shift);
count += dst_shift;
while (count > 8)
{
*dst = bits >> (8 - dst_shift);
bits = *(unsigned short *)src++ >> src_shift;
*dst++ |= bits << dst_shift;
count -= 8;
}
bits >>= (8 - dst_shift);
if (count <= 8 - src_shift) bits |= (*src >> src_shift) << dst_shift;
else bits |= (*(unsigned short *)src >> src_shift) << dst_shift;
mask = (1 << count) - 1;
*dst = (bits & mask) | (*dst & ~mask);
}
NTSTATUS WINAPI HidP_GetButtonCaps( HIDP_REPORT_TYPE report_type, HIDP_BUTTON_CAPS *caps, USHORT *caps_count,
PHIDP_PREPARSED_DATA preparsed_data )
{
return HidP_GetSpecificButtonCaps( report_type, 0, 0, 0, caps, caps_count, preparsed_data );
}
NTSTATUS WINAPI HidP_GetCaps( PHIDP_PREPARSED_DATA preparsed_data, HIDP_CAPS *caps )
{
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
TRACE( "preparsed_data %p, caps %p.\n", preparsed_data, caps );
if (!preparsed || preparsed->magic != HID_MAGIC) return HIDP_STATUS_INVALID_PREPARSED_DATA;
*caps = preparsed->caps;
return HIDP_STATUS_SUCCESS;
}
struct usage_value_params
{
void *value_buf;
USHORT value_len;
void *report_buf;
};
static LONG sign_extend( ULONG value, const struct hid_value_caps *caps )
{
UINT sign = 1 << (caps->bit_size - 1);
if (sign <= 1 || caps->logical_min >= 0) return value;
return value - ((value & sign) << 1);
}
static NTSTATUS get_scaled_usage_value( const struct hid_value_caps *caps, void *user )
{
struct usage_value_params *params = user;
ULONG unsigned_value = 0, bit_count = caps->bit_size * caps->report_count;
LONG signed_value, *value = params->value_buf;
if ((bit_count + 7) / 8 > sizeof(unsigned_value)) return HIDP_STATUS_BUFFER_TOO_SMALL;
if (sizeof(LONG) > params->value_len) return HIDP_STATUS_BUFFER_TOO_SMALL;
copy_bits( (unsigned char *)&unsigned_value, params->report_buf, bit_count, -caps->start_bit );
signed_value = sign_extend( unsigned_value, caps );
if (caps->logical_min > caps->logical_max || caps->physical_min > caps->physical_max)
return HIDP_STATUS_BAD_LOG_PHY_VALUES;
if (caps->logical_min > signed_value || caps->logical_max < signed_value)
return HIDP_STATUS_VALUE_OUT_OF_RANGE;
if (!caps->physical_min && !caps->physical_max) *value = signed_value;
else *value = caps->physical_min + MulDiv( signed_value - caps->logical_min, caps->physical_max - caps->physical_min,
caps->logical_max - caps->logical_min );
return HIDP_STATUS_NULL;
}
NTSTATUS WINAPI HidP_GetScaledUsageValue( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection,
USAGE usage, LONG *value, PHIDP_PREPARSED_DATA preparsed_data,
char *report_buf, ULONG report_len )
{
struct usage_value_params params = {.value_buf = value, .value_len = sizeof(*value), .report_buf = report_buf};
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct caps_filter filter = {.values = TRUE, .usage_page = usage_page, .collection = collection, .usage = usage };
USHORT count = 1;
TRACE( "report_type %d, usage_page %x, collection %d, usage %x, value %p, preparsed_data %p, report_buf %p, report_len %u.\n",
report_type, usage_page, collection, usage, value, preparsed_data, report_buf, report_len );
*value = 0;
if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
filter.report_id = report_buf[0];
return enum_value_caps( preparsed, report_type, report_len, &filter, get_scaled_usage_value, &params, &count );
}
static NTSTATUS get_usage_value( const struct hid_value_caps *caps, void *user )
{
struct usage_value_params *params = user;
ULONG bit_count = caps->bit_size * caps->report_count;
if ((bit_count + 7) / 8 > params->value_len) return HIDP_STATUS_BUFFER_TOO_SMALL;
memset( params->value_buf, 0, params->value_len );
copy_bits( params->value_buf, params->report_buf, bit_count, -caps->start_bit );
return HIDP_STATUS_NULL;
}
NTSTATUS WINAPI HidP_GetUsageValue( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection, USAGE usage,
ULONG *value, PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
{
struct usage_value_params params = {.value_buf = value, .value_len = sizeof(*value), .report_buf = report_buf};
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct caps_filter filter = {.values = TRUE, .usage_page = usage_page, .collection = collection, .usage = usage};
USHORT count = 1;
TRACE( "report_type %d, usage_page %x, collection %d, usage %x, value %p, preparsed_data %p, report_buf %p, report_len %u.\n",
report_type, usage_page, collection, usage, value, preparsed_data, report_buf, report_len );
if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
filter.report_id = report_buf[0];
return enum_value_caps( preparsed, report_type, report_len, &filter, get_usage_value, &params, &count );
}
NTSTATUS WINAPI HidP_GetUsageValueArray( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection,
USAGE usage, char *value_buf, USHORT value_len,
PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
{
struct usage_value_params params = {.value_buf = value_buf, .value_len = value_len, .report_buf = report_buf};
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct caps_filter filter = {.values = TRUE, .array = TRUE, .usage_page = usage_page, .collection = collection, .usage = usage};
USHORT count = 1;
TRACE( "report_type %d, usage_page %x, collection %d, usage %x, value_buf %p, value_len %u, "
"preparsed_data %p, report_buf %p, report_len %u.\n",
report_type, usage_page, collection, usage, value_buf, value_len, preparsed_data, report_buf, report_len );
if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
filter.report_id = report_buf[0];
return enum_value_caps( preparsed, report_type, report_len, &filter, get_usage_value, &params, &count );
}
struct get_usage_params
{
USAGE *usages;
USAGE *usages_end;
char *report_buf;
};
static NTSTATUS get_usage( const struct hid_value_caps *caps, void *user )
{
struct get_usage_params *params = user;
ULONG bit, last;
BYTE index;
if (HID_VALUE_CAPS_IS_ARRAY( caps ))
{
for (bit = caps->start_bit, last = bit + caps->report_count * caps->bit_size - 1; bit <= last; bit += 8)
{
if (!(index = params->report_buf[bit / 8])) continue;
if (params->usages < params->usages_end) *params->usages = caps->usage_min + index - caps->start_index;
params->usages++;
}
return HIDP_STATUS_SUCCESS;
}
for (bit = caps->start_bit, last = bit + caps->usage_max - caps->usage_min; bit <= last; ++bit)
{
if (!(params->report_buf[bit / 8] & (1 << (bit % 8)))) continue;
if (params->usages < params->usages_end) *params->usages = caps->usage_min + bit - caps->start_bit;
params->usages++;
}
return HIDP_STATUS_SUCCESS;
}
NTSTATUS WINAPI HidP_GetUsages( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection, USAGE *usages,
ULONG *usages_len, PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
{
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct get_usage_params params = {.usages = usages, .usages_end = usages + *usages_len, .report_buf = report_buf};
struct caps_filter filter = {.buttons = TRUE, .usage_page = usage_page, .collection = collection};
NTSTATUS status;
USHORT limit = -1;
TRACE( "report_type %d, collection %d, usages %p, usages_len %p, preparsed_data %p, report_buf %p, report_len %u.\n",
report_type, collection, usages, usages_len, preparsed_data, report_buf, report_len );
if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
filter.report_id = report_buf[0];
status = enum_value_caps( preparsed, report_type, report_len, &filter, get_usage, &params, &limit );
*usages_len = params.usages - usages;
if (status != HIDP_STATUS_SUCCESS) return status;
if (params.usages > params.usages_end) return HIDP_STATUS_BUFFER_TOO_SMALL;
return status;
}
NTSTATUS WINAPI HidP_GetValueCaps( HIDP_REPORT_TYPE report_type, HIDP_VALUE_CAPS *caps, USHORT *caps_count,
PHIDP_PREPARSED_DATA preparsed_data )
{
return HidP_GetSpecificValueCaps( report_type, 0, 0, 0, caps, caps_count, preparsed_data );
}
NTSTATUS WINAPI HidP_InitializeReportForID( HIDP_REPORT_TYPE report_type, UCHAR report_id,
PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
{
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
const struct hid_value_caps *caps, *end;
NTSTATUS status;
TRACE( "report_type %d, report_id %x, preparsed_data %p, report_buf %p, report_len %u.\n", report_type,
report_id, preparsed_data, report_buf, report_len );
if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
status = get_value_caps_range( preparsed, report_type, report_len, &caps, &end );
if (status != HIDP_STATUS_SUCCESS) return status;
while (caps != end && (caps->report_id != report_id || (!caps->usage_min && !caps->usage_max))) caps++;
if (caps == end) return HIDP_STATUS_REPORT_DOES_NOT_EXIST;
memset( report_buf, 0, report_len );
report_buf[0] = report_id;
return HIDP_STATUS_SUCCESS;
}
static NTSTATUS get_usage_list_length( const struct hid_value_caps *caps, void *data )
{
*(ULONG *)data += caps->report_count;
return HIDP_STATUS_SUCCESS;
}
ULONG WINAPI HidP_MaxUsageListLength( HIDP_REPORT_TYPE report_type, USAGE usage_page, PHIDP_PREPARSED_DATA preparsed_data )
{
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct caps_filter filter = {.buttons = TRUE, .usage_page = usage_page};
USHORT limit = -1;
ULONG count = 0;
TRACE( "report_type %d, usage_page %x, preparsed_data %p.\n", report_type, usage_page, preparsed_data );
enum_value_caps( preparsed, report_type, 0, &filter, get_usage_list_length, &count, &limit );
return count;
}
static NTSTATUS set_scaled_usage_value( const struct hid_value_caps *caps, void *user )
{
ULONG bit_count = caps->bit_size * caps->report_count;
struct usage_value_params *params = user;
LONG value, log_range, phy_range;
if (caps->logical_min > caps->logical_max) return HIDP_STATUS_BAD_LOG_PHY_VALUES;
if (caps->physical_min > caps->physical_max) return HIDP_STATUS_BAD_LOG_PHY_VALUES;
if ((bit_count + 7) / 8 > sizeof(value)) return HIDP_STATUS_BUFFER_TOO_SMALL;
if (sizeof(LONG) > params->value_len) return HIDP_STATUS_BUFFER_TOO_SMALL;
value = *(LONG *)params->value_buf;
if (caps->physical_min || caps->physical_max)
{
/* testing shows that this is what the function does, including all
* the overflows and rounding errors... */
log_range = (caps->logical_max - caps->logical_min + 1) / 2;
phy_range = (caps->physical_max - caps->physical_min + 1) / 2;
value = value - caps->physical_min;
value = (log_range * value) / phy_range;
value = caps->logical_min + value;
}
copy_bits( params->report_buf, (unsigned char *)&value, bit_count, caps->start_bit );
return HIDP_STATUS_NULL;
}
NTSTATUS WINAPI HidP_SetScaledUsageValue( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection,
USAGE usage, LONG value, PHIDP_PREPARSED_DATA preparsed_data,
char *report_buf, ULONG report_len )
{
struct usage_value_params params = {.value_buf = &value, .value_len = sizeof(value), .report_buf = report_buf};
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct caps_filter filter = {.values = TRUE, .usage_page = usage_page, .collection = collection, .usage = usage };
USHORT count = 1;
TRACE( "report_type %d, usage_page %x, collection %d, usage %x, value %d, preparsed_data %p, report_buf %p, report_len %u.\n",
report_type, usage_page, collection, usage, value, preparsed_data, report_buf, report_len );
if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
filter.report_id = report_buf[0];
return enum_value_caps( preparsed, report_type, report_len, &filter, set_scaled_usage_value, &params, &count );
}
static NTSTATUS set_usage_value( const struct hid_value_caps *caps, void *user )
{
struct usage_value_params *params = user;
ULONG bit_count = caps->bit_size * caps->report_count;
if ((bit_count + 7) / 8 > params->value_len) return HIDP_STATUS_BUFFER_TOO_SMALL;
copy_bits( params->report_buf, params->value_buf, bit_count, caps->start_bit );
return HIDP_STATUS_NULL;
}
NTSTATUS WINAPI HidP_SetUsageValue( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection, USAGE usage,
ULONG value, PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
{
struct usage_value_params params = {.value_buf = &value, .value_len = sizeof(value), .report_buf = report_buf};
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct caps_filter filter = {.values = TRUE, .usage_page = usage_page, .collection = collection, .usage = usage};
USHORT count = 1;
TRACE( "report_type %d, usage_page %x, collection %d, usage %x, value %u, preparsed_data %p, report_buf %p, report_len %u.\n",
report_type, usage_page, collection, usage, value, preparsed_data, report_buf, report_len );
if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
filter.report_id = report_buf[0];
return enum_value_caps( preparsed, report_type, report_len, &filter, set_usage_value, &params, &count );
}
NTSTATUS WINAPI HidP_SetUsageValueArray( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection,
USAGE usage, char *value_buf, USHORT value_len,
PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
{
struct usage_value_params params = {.value_buf = value_buf, .value_len = value_len, .report_buf = report_buf};
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct caps_filter filter = {.values = TRUE, .array = TRUE, .usage_page = usage_page, .collection = collection, .usage = usage};
USHORT count = 1;
TRACE( "report_type %d, usage_page %x, collection %d, usage %x, value_buf %p, value_len %u, "
"preparsed_data %p, report_buf %p, report_len %u.\n",
report_type, usage_page, collection, usage, value_buf, value_len, preparsed_data, report_buf, report_len );
if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
filter.report_id = report_buf[0];
return enum_value_caps( preparsed, report_type, report_len, &filter, set_usage_value, &params, &count );
}
struct set_usage_params
{
USAGE usage;
char *report_buf;
};
static NTSTATUS set_usage( const struct hid_value_caps *caps, void *user )
{
struct set_usage_params *params = user;
ULONG bit, last;
if (HID_VALUE_CAPS_IS_ARRAY( caps ))
{
for (bit = caps->start_bit, last = bit + caps->report_count * caps->bit_size - 1; bit <= last; bit += 8)
{
if (params->report_buf[bit / 8]) continue;
params->report_buf[bit / 8] = caps->start_index + params->usage - caps->usage_min;
break;
}
if (bit > last) return HIDP_STATUS_BUFFER_TOO_SMALL;
return HIDP_STATUS_NULL;
}
bit = caps->start_bit + params->usage - caps->usage_min;
params->report_buf[bit / 8] |= (1 << (bit % 8));
return HIDP_STATUS_NULL;
}
NTSTATUS WINAPI HidP_SetUsages( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection, USAGE *usages,
ULONG *usage_count, PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
{
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct set_usage_params params = {.report_buf = report_buf};
struct caps_filter filter = {.buttons = TRUE, .usage_page = usage_page, .collection = collection};
NTSTATUS status;
USHORT limit = 1;
ULONG i, count = *usage_count;
TRACE( "report_type %d, usage_page %x, collection %d, usages %p, usage_count %p, preparsed_data %p, "
"report_buf %p, report_len %u.\n",
report_type, usage_page, collection, usages, usage_count, preparsed_data, report_buf, report_len );
if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
filter.report_id = report_buf[0];
for (i = 0; i < count; ++i)
{
params.usage = filter.usage = usages[i];
status = enum_value_caps( preparsed, report_type, report_len, &filter, set_usage, &params, &limit );
if (status != HIDP_STATUS_SUCCESS) return status;
}
return HIDP_STATUS_SUCCESS;
}
struct unset_usage_params
{
USAGE usage;
char *report_buf;
BOOL found;
};
static NTSTATUS unset_usage( const struct hid_value_caps *caps, void *user )
{
struct unset_usage_params *params = user;
ULONG bit, index, last;
if (HID_VALUE_CAPS_IS_ARRAY( caps ))
{
for (bit = caps->start_bit, last = bit + caps->report_count * caps->bit_size - 1; bit <= last; bit += 8)
{
index = caps->start_index + params->usage - caps->usage_min;
if (params->report_buf[bit / 8] != index) continue;
params->report_buf[bit / 8] = 0;
params->found = TRUE;
break;
}
return HIDP_STATUS_NULL;
}
bit = caps->start_bit + params->usage - caps->usage_min;
if (params->report_buf[bit / 8] & (1 << (bit % 8))) params->found = TRUE;
params->report_buf[bit / 8] &= ~(1 << (bit % 8));
return HIDP_STATUS_NULL;
}
NTSTATUS WINAPI HidP_UnsetUsages( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection, USAGE *usages,
ULONG *usage_count, PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
{
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct unset_usage_params params = {.report_buf = report_buf, .found = FALSE};
struct caps_filter filter = {.buttons = TRUE, .usage_page = usage_page, .collection = collection};
NTSTATUS status;
USHORT limit = 1;
ULONG i, count = *usage_count;
TRACE( "report_type %d, usage_page %x, collection %d, usages %p, usage_count %p, preparsed_data %p, "
"report_buf %p, report_len %u.\n",
report_type, usage_page, collection, usages, usage_count, preparsed_data, report_buf, report_len );
if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
filter.report_id = report_buf[0];
for (i = 0; i < count; ++i)
{
params.usage = filter.usage = usages[i];
status = enum_value_caps( preparsed, report_type, report_len, &filter, unset_usage, &params, &limit );
if (status != HIDP_STATUS_SUCCESS) return status;
}
if (!params.found) return HIDP_STATUS_BUTTON_NOT_PRESSED;
return HIDP_STATUS_SUCCESS;
}
NTSTATUS WINAPI HidP_TranslateUsagesToI8042ScanCodes(USAGE *ChangedUsageList,
ULONG UsageListLength, HIDP_KEYBOARD_DIRECTION KeyAction,
HIDP_KEYBOARD_MODIFIER_STATE *ModifierState,
PHIDP_INSERT_SCANCODES InsertCodesProcedure, VOID *InsertCodesContext)
{
FIXME("stub: %p, %i, %i, %p, %p, %p\n", ChangedUsageList, UsageListLength,
KeyAction, ModifierState, InsertCodesProcedure, InsertCodesContext);
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS get_button_caps( const struct hid_value_caps *caps, void *user )
{
HIDP_BUTTON_CAPS **iter = user, *dst = *iter;
dst->UsagePage = caps->usage_page;
dst->ReportID = caps->report_id;
dst->LinkCollection = caps->link_collection;
dst->LinkUsagePage = caps->link_usage_page;
dst->LinkUsage = caps->link_usage;
dst->BitField = caps->bit_field;
dst->IsAlias = FALSE;
dst->IsAbsolute = HID_VALUE_CAPS_IS_ABSOLUTE( caps );
if (!(dst->IsRange = caps->is_range))
{
dst->NotRange.Usage = caps->usage_min;
dst->NotRange.DataIndex = caps->data_index_min;
}
else
{
dst->Range.UsageMin = caps->usage_min;
dst->Range.UsageMax = caps->usage_max;
dst->Range.DataIndexMin = caps->data_index_min;
dst->Range.DataIndexMax = caps->data_index_max;
}
if (!(dst->IsStringRange = caps->is_string_range))
dst->NotRange.StringIndex = caps->string_min;
else
{
dst->Range.StringMin = caps->string_min;
dst->Range.StringMax = caps->string_max;
}
if ((dst->IsDesignatorRange = caps->is_designator_range))
dst->NotRange.DesignatorIndex = caps->designator_min;
else
{
dst->Range.DesignatorMin = caps->designator_min;
dst->Range.DesignatorMax = caps->designator_max;
}
*iter += 1;
return HIDP_STATUS_SUCCESS;
}
NTSTATUS WINAPI HidP_GetSpecificButtonCaps( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection,
USAGE usage, HIDP_BUTTON_CAPS *caps, USHORT *caps_count,
PHIDP_PREPARSED_DATA preparsed_data )
{
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
const struct caps_filter filter = {.buttons = TRUE, .usage_page = usage_page, .collection = collection, .usage = usage};
TRACE( "report_type %d, usage_page %x, collection %d, usage %x, caps %p, caps_count %p, preparsed_data %p.\n",
report_type, usage_page, collection, usage, caps, caps_count, preparsed_data );
return enum_value_caps( preparsed, report_type, 0, &filter, get_button_caps, &caps, caps_count );
}
static NTSTATUS get_value_caps( const struct hid_value_caps *caps, void *user )
{
HIDP_VALUE_CAPS **iter = user, *dst = *iter;
dst->UsagePage = caps->usage_page;
dst->ReportID = caps->report_id;
dst->LinkCollection = caps->link_collection;
dst->LinkUsagePage = caps->link_usage_page;
dst->LinkUsage = caps->link_usage;
dst->BitField = caps->bit_field;
dst->IsAlias = FALSE;
dst->IsAbsolute = HID_VALUE_CAPS_IS_ABSOLUTE( caps );
dst->HasNull = HID_VALUE_CAPS_HAS_NULL( caps );
dst->BitSize = caps->bit_size;
dst->ReportCount = caps->is_range ? 1 : caps->report_count;
dst->UnitsExp = caps->units_exp;
dst->Units = caps->units;
dst->LogicalMin = caps->logical_min;
dst->LogicalMax = caps->logical_max;
dst->PhysicalMin = caps->physical_min;
dst->PhysicalMax = caps->physical_max;
if (!(dst->IsRange = caps->is_range))
{
dst->NotRange.Usage = caps->usage_min;
dst->NotRange.DataIndex = caps->data_index_min;
}
else
{
dst->Range.UsageMin = caps->usage_min;
dst->Range.UsageMax = caps->usage_max;
dst->Range.DataIndexMin = caps->data_index_min;
dst->Range.DataIndexMax = caps->data_index_max;
}
if (!(dst->IsStringRange = caps->is_string_range))
dst->NotRange.StringIndex = caps->string_min;
else
{
dst->Range.StringMin = caps->string_min;
dst->Range.StringMax = caps->string_max;
}
if ((dst->IsDesignatorRange = caps->is_designator_range))
dst->NotRange.DesignatorIndex = caps->designator_min;
else
{
dst->Range.DesignatorMin = caps->designator_min;
dst->Range.DesignatorMax = caps->designator_max;
}
*iter += 1;
return HIDP_STATUS_SUCCESS;
}
NTSTATUS WINAPI HidP_GetSpecificValueCaps( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection,
USAGE usage, HIDP_VALUE_CAPS *caps, USHORT *caps_count,
PHIDP_PREPARSED_DATA preparsed_data )
{
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
const struct caps_filter filter = {.values = TRUE, .usage_page = usage_page, .collection = collection, .usage = usage};
TRACE( "report_type %d, usage_page %x, collection %d, usage %x, caps %p, caps_count %p, preparsed_data %p.\n",
report_type, usage_page, collection, usage, caps, caps_count, preparsed_data );
return enum_value_caps( preparsed, report_type, 0, &filter, get_value_caps, &caps, caps_count );
}
struct get_usage_and_page_params
{
USAGE_AND_PAGE *usages;
USAGE_AND_PAGE *usages_end;
char *report_buf;
};
static NTSTATUS get_usage_and_page( const struct hid_value_caps *caps, void *user )
{
struct get_usage_and_page_params *params = user;
ULONG bit, last;
BYTE index;
if (HID_VALUE_CAPS_IS_ARRAY( caps ))
{
for (bit = caps->start_bit, last = bit + caps->report_count * caps->bit_size - 1; bit <= last; bit += 8)
{
if (!(index = params->report_buf[bit / 8])) continue;
if (params->usages < params->usages_end)
{
params->usages->UsagePage = caps->usage_page;
params->usages->Usage = caps->usage_min + index - caps->start_index;
}
params->usages++;
}
return HIDP_STATUS_SUCCESS;
}
for (bit = caps->start_bit, last = bit + caps->usage_max - caps->usage_min; bit <= last; bit++)
{
if (!(params->report_buf[bit / 8] & (1 << (bit % 8)))) continue;
if (params->usages < params->usages_end)
{
params->usages->UsagePage = caps->usage_page;
params->usages->Usage = caps->usage_min + bit - caps->start_bit;
}
params->usages++;
}
return HIDP_STATUS_SUCCESS;
}
NTSTATUS WINAPI HidP_GetUsagesEx( HIDP_REPORT_TYPE report_type, USHORT collection, USAGE_AND_PAGE *usages,
ULONG *usages_len, PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
{
struct get_usage_and_page_params params = {.usages = usages, .usages_end = usages + *usages_len, .report_buf = report_buf};
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct caps_filter filter = {.buttons = TRUE, .collection = collection};
NTSTATUS status;
USHORT limit = -1;
TRACE( "report_type %d, collection %d, usages %p, usages_len %p, preparsed_data %p, report_buf %p, report_len %u.\n",
report_type, collection, usages, usages_len, preparsed_data, report_buf, report_len );
if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
filter.report_id = report_buf[0];
status = enum_value_caps( preparsed, report_type, report_len, &filter, get_usage_and_page, &params, &limit );
*usages_len = params.usages - usages;
if (status != HIDP_STATUS_SUCCESS) return status;
if (params.usages > params.usages_end) return HIDP_STATUS_BUFFER_TOO_SMALL;
return status;
}
static NTSTATUS count_data( const struct hid_value_caps *caps, void *user )
{
if (caps->is_range || HID_VALUE_CAPS_IS_BUTTON( caps )) *(ULONG *)user += caps->report_count;
else *(ULONG *)user += 1;
return HIDP_STATUS_SUCCESS;
}
ULONG WINAPI HidP_MaxDataListLength( HIDP_REPORT_TYPE report_type, PHIDP_PREPARSED_DATA preparsed_data )
{
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct caps_filter filter = {};
USHORT limit = -1;
ULONG count = 0;
TRACE( "report_type %d, preparsed_data %p.\n", report_type, preparsed_data );
enum_value_caps( preparsed, report_type, 0, &filter, count_data, &count, &limit );
return count;
}
struct find_all_data_params
{
HIDP_DATA *data;
HIDP_DATA *data_end;
char *report_buf;
};
static NTSTATUS find_all_data( const struct hid_value_caps *caps, void *user )
{
struct find_all_data_params *params = user;
HIDP_DATA *data = params->data, *data_end = params->data_end;
ULONG bit, last, bit_count = caps->bit_size * caps->report_count;
char *report_buf = params->report_buf;
BYTE index;
if (!caps->bit_size) return HIDP_STATUS_SUCCESS;
if (HID_VALUE_CAPS_IS_ARRAY( caps ))
{
for (bit = caps->start_bit, last = bit + caps->report_count * caps->bit_size - 1; bit <= last; bit += 8)
{
if (!(index = report_buf[bit / 8])) continue;
if (data < data_end)
{
data->DataIndex = caps->data_index_min + index - caps->start_index;
data->On = 1;
}
data++;
}
}
else if (HID_VALUE_CAPS_IS_BUTTON( caps ))
{
for (bit = caps->start_bit, last = bit + caps->usage_max - caps->usage_min; bit <= last; bit++)
{
if (!(report_buf[bit / 8] & (1 << (bit % 8)))) continue;
if (data < data_end)
{
data->DataIndex = caps->data_index_min + bit - caps->start_bit;
data->On = 1;
}
data++;
}
}
else if (caps->report_count == 1)
{
if (data < data_end)
{
data->DataIndex = caps->data_index_min;
data->RawValue = 0;
if ((bit_count + 7) / 8 > sizeof(data->RawValue)) return HIDP_STATUS_BUFFER_TOO_SMALL;
copy_bits( (void *)&data->RawValue, (void *)report_buf, bit_count, -caps->start_bit );
}
data++;
}
params->data = data;
return HIDP_STATUS_SUCCESS;
}
NTSTATUS WINAPI HidP_GetData( HIDP_REPORT_TYPE report_type, HIDP_DATA *data, ULONG *data_len,
PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
{
struct find_all_data_params params = {.data = data, .data_end = data + *data_len, .report_buf = report_buf};
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct caps_filter filter = {};
NTSTATUS status;
USHORT limit = -1;
TRACE( "report_type %d, data %p, data_len %p, preparsed_data %p, report_buf %p, report_len %u.\n",
report_type, data, data_len, preparsed_data, report_buf, report_len );
if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
filter.report_id = report_buf[0];
status = enum_value_caps( preparsed, report_type, report_len, &filter, find_all_data, &params, &limit );
*data_len = params.data - data;
if (status != HIDP_STATUS_SUCCESS) return status;
if (params.data > params.data_end) return HIDP_STATUS_BUFFER_TOO_SMALL;
return HIDP_STATUS_SUCCESS;
}
NTSTATUS WINAPI HidP_GetLinkCollectionNodes( HIDP_LINK_COLLECTION_NODE *nodes, ULONG *nodes_len, PHIDP_PREPARSED_DATA preparsed_data )
{
struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
struct hid_value_caps *caps = HID_COLLECTION_VALUE_CAPS( preparsed );
ULONG i, count, capacity = *nodes_len;
TRACE( "nodes %p, nodes_len %p, preparsed_data %p.\n", nodes, nodes_len, preparsed_data );
if (!preparsed || preparsed->magic != HID_MAGIC) return HIDP_STATUS_INVALID_PREPARSED_DATA;
count = *nodes_len = preparsed->caps.NumberLinkCollectionNodes;
if (capacity < count) return HIDP_STATUS_BUFFER_TOO_SMALL;
for (i = 0; i < count; ++i)
{
nodes[i].LinkUsagePage = caps[i].usage_page;
nodes[i].LinkUsage = caps[i].usage_min;
nodes[i].Parent = caps[i].link_collection;
nodes[i].CollectionType = caps[i].bit_field;
nodes[i].IsAlias = 0;
nodes[i].FirstChild = 0;
nodes[i].NextSibling = 0;
nodes[i].NumberOfChildren = 0;
if (i > 0)
{
nodes[i].NextSibling = nodes[nodes[i].Parent].FirstChild;
nodes[nodes[i].Parent].FirstChild = i;
nodes[nodes[i].Parent].NumberOfChildren++;
}
}
return HIDP_STATUS_SUCCESS;
}
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