1024 lines
41 KiB
C
1024 lines
41 KiB
C
/*
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* Human Input Devices
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*
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* Copyright (C) 2015 Aric Stewart
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winbase.h"
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#include "winternl.h"
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#include "winioctl.h"
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#include "ddk/wdm.h"
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#include "hidusage.h"
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#include "ddk/hidpi.h"
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#include "wine/hid.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(hidp);
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static NTSTATUS get_value_caps_range( struct hid_preparsed_data *preparsed, HIDP_REPORT_TYPE report_type, ULONG report_len,
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const struct hid_value_caps **caps, const struct hid_value_caps **caps_end )
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{
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if (!preparsed || memcmp( preparsed->magic, "HidP KDR", 8 )) return HIDP_STATUS_INVALID_PREPARSED_DATA;
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switch (report_type)
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{
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case HidP_Input:
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if (report_len && report_len != preparsed->input_report_byte_length)
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return HIDP_STATUS_INVALID_REPORT_LENGTH;
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*caps = HID_INPUT_VALUE_CAPS( preparsed );
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*caps_end = *caps + preparsed->input_caps_count;
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break;
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case HidP_Output:
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if (report_len && report_len != preparsed->output_report_byte_length)
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return HIDP_STATUS_INVALID_REPORT_LENGTH;
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*caps = HID_OUTPUT_VALUE_CAPS( preparsed );
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*caps_end = *caps + preparsed->output_caps_count;
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break;
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case HidP_Feature:
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if (report_len && report_len != preparsed->feature_report_byte_length)
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return HIDP_STATUS_INVALID_REPORT_LENGTH;
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*caps = HID_FEATURE_VALUE_CAPS( preparsed );
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*caps_end = *caps + preparsed->feature_caps_count;
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break;
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default:
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return HIDP_STATUS_INVALID_REPORT_TYPE;
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}
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return HIDP_STATUS_SUCCESS;
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}
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struct caps_filter
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{
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BOOLEAN buttons;
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BOOLEAN values;
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BOOLEAN array;
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USAGE usage_page;
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USHORT collection;
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USAGE usage;
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UCHAR report_id;
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};
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static BOOL match_value_caps( const struct hid_value_caps *caps, const struct caps_filter *filter )
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{
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if (!caps->usage_min && !caps->usage_max) return FALSE;
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if (filter->buttons && !(caps->flags & HID_VALUE_CAPS_IS_BUTTON)) return FALSE;
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if (filter->values && (caps->flags & HID_VALUE_CAPS_IS_BUTTON)) return FALSE;
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if (filter->usage_page && filter->usage_page != caps->usage_page) return FALSE;
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if (filter->collection && filter->collection != caps->link_collection) return FALSE;
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if (!filter->usage) return TRUE;
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return caps->usage_min <= filter->usage && caps->usage_max >= filter->usage;
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}
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typedef NTSTATUS (*enum_value_caps_callback)( const struct hid_value_caps *caps, void *user );
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static NTSTATUS enum_value_caps( struct hid_preparsed_data *preparsed, HIDP_REPORT_TYPE report_type,
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ULONG report_len, const struct caps_filter *filter,
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enum_value_caps_callback callback, void *user, USHORT *count )
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{
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const struct hid_value_caps *caps, *caps_end;
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BOOL is_range, incompatible = FALSE;
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LONG remaining = *count;
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NTSTATUS status;
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for (status = get_value_caps_range( preparsed, report_type, report_len, &caps, &caps_end );
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status == HIDP_STATUS_SUCCESS && caps != caps_end; caps++)
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{
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is_range = caps->flags & HID_VALUE_CAPS_IS_RANGE;
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if (!match_value_caps( caps, filter )) continue;
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if (filter->report_id && caps->report_id != filter->report_id) incompatible = TRUE;
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else if (filter->array && (is_range || caps->report_count <= 1)) return HIDP_STATUS_NOT_VALUE_ARRAY;
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else if (remaining-- > 0) status = callback( caps, user );
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}
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if (status == HIDP_STATUS_NULL) status = HIDP_STATUS_SUCCESS;
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if (status != HIDP_STATUS_SUCCESS) return status;
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*count -= remaining;
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if (*count == 0) return incompatible ? HIDP_STATUS_INCOMPATIBLE_REPORT_ID : HIDP_STATUS_USAGE_NOT_FOUND;
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if (remaining < 0) return HIDP_STATUS_BUFFER_TOO_SMALL;
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return HIDP_STATUS_SUCCESS;
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}
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/* copy count bits from src, starting at (-shift) bit if < 0, to dst starting at (shift) bit if > 0 */
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static void copy_bits( unsigned char *dst, const unsigned char *src, int count, int shift )
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{
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unsigned char bits, mask;
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size_t src_shift = shift < 0 ? (-shift & 7) : 0;
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size_t dst_shift = shift > 0 ? (shift & 7) : 0;
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if (shift < 0) src += -shift / 8;
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if (shift > 0) dst += shift / 8;
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if (src_shift == 0 && dst_shift == 0)
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{
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memcpy( dst, src, count / 8 );
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dst += count / 8;
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src += count / 8;
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count &= 7;
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}
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if (!count) return;
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bits = *dst << (8 - dst_shift);
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count += dst_shift;
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while (count > 8)
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{
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*dst = bits >> (8 - dst_shift);
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bits = *(unsigned short *)src++ >> src_shift;
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*dst++ |= bits << dst_shift;
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count -= 8;
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}
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bits >>= (8 - dst_shift);
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if (count <= 8 - src_shift) bits |= (*src >> src_shift) << dst_shift;
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else bits |= (*(unsigned short *)src >> src_shift) << dst_shift;
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mask = (1 << count) - 1;
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*dst = (bits & mask) | (*dst & ~mask);
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}
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NTSTATUS WINAPI HidP_GetButtonCaps( HIDP_REPORT_TYPE report_type, HIDP_BUTTON_CAPS *caps, USHORT *caps_count,
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PHIDP_PREPARSED_DATA preparsed_data )
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{
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return HidP_GetSpecificButtonCaps( report_type, 0, 0, 0, caps, caps_count, preparsed_data );
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}
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NTSTATUS WINAPI HidP_GetCaps( PHIDP_PREPARSED_DATA preparsed_data, HIDP_CAPS *caps )
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{
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struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
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struct hid_value_caps *it, *end;
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TRACE( "preparsed_data %p, caps %p.\n", preparsed_data, caps );
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if (!preparsed || memcmp( preparsed->magic, "HidP KDR", 8 )) return HIDP_STATUS_INVALID_PREPARSED_DATA;
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caps->Usage = preparsed->usage;
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caps->UsagePage = preparsed->usage_page;
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caps->InputReportByteLength = preparsed->input_report_byte_length;
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caps->OutputReportByteLength = preparsed->output_report_byte_length;
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caps->FeatureReportByteLength = preparsed->feature_report_byte_length;
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caps->NumberLinkCollectionNodes = preparsed->number_link_collection_nodes;
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caps->NumberInputButtonCaps = 0;
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caps->NumberInputValueCaps = 0;
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caps->NumberInputDataIndices = 0;
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caps->NumberOutputButtonCaps = 0;
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caps->NumberOutputValueCaps = 0;
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caps->NumberOutputDataIndices = 0;
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caps->NumberFeatureButtonCaps = 0;
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caps->NumberFeatureValueCaps = 0;
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caps->NumberFeatureDataIndices = 0;
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for (it = HID_INPUT_VALUE_CAPS( preparsed ), end = it + preparsed->input_caps_count;
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it != end; ++it)
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{
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if (!it->usage_min && !it->usage_max) continue;
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if (it->flags & HID_VALUE_CAPS_IS_BUTTON) caps->NumberInputButtonCaps++;
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else caps->NumberInputValueCaps++;
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if (!(it->flags & HID_VALUE_CAPS_IS_RANGE)) caps->NumberInputDataIndices++;
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else caps->NumberInputDataIndices += it->data_index_max - it->data_index_min + 1;
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}
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for (it = HID_OUTPUT_VALUE_CAPS( preparsed ), end = it + preparsed->output_caps_count;
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it != end; ++it)
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{
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if (!it->usage_min && !it->usage_max) continue;
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if (it->flags & HID_VALUE_CAPS_IS_BUTTON) caps->NumberOutputButtonCaps++;
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else caps->NumberOutputValueCaps++;
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if (!(it->flags & HID_VALUE_CAPS_IS_RANGE)) caps->NumberOutputDataIndices++;
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else caps->NumberOutputDataIndices += it->data_index_max - it->data_index_min + 1;
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}
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for (it = HID_FEATURE_VALUE_CAPS( preparsed ), end = it + preparsed->feature_caps_count;
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it != end; ++it)
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{
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if (!it->usage_min && !it->usage_max) continue;
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if (it->flags & HID_VALUE_CAPS_IS_BUTTON) caps->NumberFeatureButtonCaps++;
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else caps->NumberFeatureValueCaps++;
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if (!(it->flags & HID_VALUE_CAPS_IS_RANGE)) caps->NumberFeatureDataIndices++;
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else caps->NumberFeatureDataIndices += it->data_index_max - it->data_index_min + 1;
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}
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return HIDP_STATUS_SUCCESS;
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}
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struct usage_value_params
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{
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void *value_buf;
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USHORT value_len;
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void *report_buf;
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};
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static LONG sign_extend( ULONG value, const struct hid_value_caps *caps )
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{
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UINT sign = 1 << (caps->bit_size - 1);
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if (sign <= 1 || caps->logical_min >= 0) return value;
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return value - ((value & sign) << 1);
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}
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static NTSTATUS get_scaled_usage_value( const struct hid_value_caps *caps, void *user )
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{
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struct usage_value_params *params = user;
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ULONG unsigned_value = 0, bit_count = caps->bit_size * caps->report_count;
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LONG signed_value, *value = params->value_buf;
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unsigned char *report_buf;
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if ((bit_count + 7) / 8 > sizeof(unsigned_value)) return HIDP_STATUS_BUFFER_TOO_SMALL;
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if (sizeof(LONG) > params->value_len) return HIDP_STATUS_BUFFER_TOO_SMALL;
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report_buf = (unsigned char *)params->report_buf + caps->start_byte;
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copy_bits( (unsigned char *)&unsigned_value, report_buf, bit_count, -caps->start_bit );
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signed_value = sign_extend( unsigned_value, caps );
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if (caps->logical_min > caps->logical_max || caps->physical_min > caps->physical_max)
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return HIDP_STATUS_BAD_LOG_PHY_VALUES;
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if (caps->logical_min > signed_value || caps->logical_max < signed_value)
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return HIDP_STATUS_VALUE_OUT_OF_RANGE;
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if (!caps->physical_min && !caps->physical_max) *value = signed_value;
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else *value = caps->physical_min + MulDiv( signed_value - caps->logical_min, caps->physical_max - caps->physical_min,
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caps->logical_max - caps->logical_min );
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return HIDP_STATUS_NULL;
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}
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NTSTATUS WINAPI HidP_GetScaledUsageValue( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection,
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USAGE usage, LONG *value, PHIDP_PREPARSED_DATA preparsed_data,
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char *report_buf, ULONG report_len )
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{
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struct usage_value_params params = {.value_buf = value, .value_len = sizeof(*value), .report_buf = report_buf};
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struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
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struct caps_filter filter = {.values = TRUE, .usage_page = usage_page, .collection = collection, .usage = usage };
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USHORT count = 1;
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TRACE( "report_type %d, usage_page %x, collection %d, usage %x, value %p, preparsed_data %p, report_buf %p, report_len %u.\n",
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report_type, usage_page, collection, usage, value, preparsed_data, report_buf, report_len );
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*value = 0;
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if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
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filter.report_id = report_buf[0];
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return enum_value_caps( preparsed, report_type, report_len, &filter, get_scaled_usage_value, ¶ms, &count );
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}
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static NTSTATUS get_usage_value( const struct hid_value_caps *caps, void *user )
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{
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struct usage_value_params *params = user;
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ULONG bit_count = caps->bit_size * caps->report_count;
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unsigned char *report_buf;
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if ((bit_count + 7) / 8 > params->value_len) return HIDP_STATUS_BUFFER_TOO_SMALL;
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memset( params->value_buf, 0, params->value_len );
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report_buf = (unsigned char *)params->report_buf + caps->start_byte;
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copy_bits( params->value_buf, report_buf, bit_count, -caps->start_bit );
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return HIDP_STATUS_NULL;
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}
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NTSTATUS WINAPI HidP_GetUsageValue( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection, USAGE usage,
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ULONG *value, PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
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{
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struct usage_value_params params = {.value_buf = value, .value_len = sizeof(*value), .report_buf = report_buf};
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struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
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struct caps_filter filter = {.values = TRUE, .usage_page = usage_page, .collection = collection, .usage = usage};
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USHORT count = 1;
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TRACE( "report_type %d, usage_page %x, collection %d, usage %x, value %p, preparsed_data %p, report_buf %p, report_len %u.\n",
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report_type, usage_page, collection, usage, value, preparsed_data, report_buf, report_len );
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if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
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filter.report_id = report_buf[0];
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return enum_value_caps( preparsed, report_type, report_len, &filter, get_usage_value, ¶ms, &count );
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}
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NTSTATUS WINAPI HidP_GetUsageValueArray( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection,
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USAGE usage, char *value_buf, USHORT value_len,
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PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
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{
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struct usage_value_params params = {.value_buf = value_buf, .value_len = value_len, .report_buf = report_buf};
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struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
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struct caps_filter filter = {.values = TRUE, .array = TRUE, .usage_page = usage_page, .collection = collection, .usage = usage};
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USHORT count = 1;
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TRACE( "report_type %d, usage_page %x, collection %d, usage %x, value_buf %p, value_len %u, "
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"preparsed_data %p, report_buf %p, report_len %u.\n",
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report_type, usage_page, collection, usage, value_buf, value_len, preparsed_data, report_buf, report_len );
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if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
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filter.report_id = report_buf[0];
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return enum_value_caps( preparsed, report_type, report_len, &filter, get_usage_value, ¶ms, &count );
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}
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struct get_usage_params
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{
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USAGE *usages;
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USAGE *usages_end;
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char *report_buf;
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};
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static NTSTATUS get_usage( const struct hid_value_caps *caps, void *user )
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{
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const struct hid_value_caps *end = caps;
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ULONG index_min, index_max, bit, last;
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struct get_usage_params *params = user;
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unsigned char *report_buf;
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BYTE index;
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report_buf = (unsigned char *)params->report_buf + caps->start_byte;
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if (HID_VALUE_CAPS_IS_ARRAY( caps ))
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{
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while (end->flags & HID_VALUE_CAPS_ARRAY_HAS_MORE) end++;
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index_min = end - caps + 1;
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index_max = index_min + caps->usage_max - caps->usage_min;
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for (bit = caps->start_bit, last = bit + caps->report_count * caps->bit_size - 1; bit <= last; bit += 8)
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{
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if (!(index = report_buf[bit / 8]) || index < index_min || index > index_max) continue;
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if (params->usages < params->usages_end) *params->usages = caps->usage_min + index - index_min;
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params->usages++;
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}
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return HIDP_STATUS_SUCCESS;
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}
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for (bit = caps->start_bit, last = bit + caps->usage_max - caps->usage_min; bit <= last; ++bit)
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{
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if (!(report_buf[bit / 8] & (1 << (bit % 8)))) continue;
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if (params->usages < params->usages_end) *params->usages = caps->usage_min + bit - caps->start_bit;
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params->usages++;
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}
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return HIDP_STATUS_SUCCESS;
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}
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NTSTATUS WINAPI HidP_GetUsages( HIDP_REPORT_TYPE report_type, USAGE usage_page, USHORT collection, USAGE *usages,
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ULONG *usages_len, PHIDP_PREPARSED_DATA preparsed_data, char *report_buf, ULONG report_len )
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{
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struct hid_preparsed_data *preparsed = (struct hid_preparsed_data *)preparsed_data;
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struct get_usage_params params = {.usages = usages, .usages_end = usages + *usages_len, .report_buf = report_buf};
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struct caps_filter filter = {.buttons = TRUE, .usage_page = usage_page, .collection = collection};
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NTSTATUS status;
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USHORT limit = -1;
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TRACE( "report_type %d, collection %d, usages %p, usages_len %p, preparsed_data %p, report_buf %p, report_len %u.\n",
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report_type, collection, usages, usages_len, preparsed_data, report_buf, report_len );
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if (!report_len) return HIDP_STATUS_INVALID_REPORT_LENGTH;
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filter.report_id = report_buf[0];
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status = enum_value_caps( preparsed, report_type, report_len, &filter, get_usage, ¶ms, &limit );
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*usages_len = params.usages - usages;
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if (status != HIDP_STATUS_SUCCESS) return status;
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if (params.usages > params.usages_end) return HIDP_STATUS_BUFFER_TOO_SMALL;
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return status;
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}
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NTSTATUS WINAPI HidP_GetValueCaps( HIDP_REPORT_TYPE report_type, HIDP_VALUE_CAPS *caps, USHORT *caps_count,
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PHIDP_PREPARSED_DATA preparsed_data )
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{
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return HidP_GetSpecificValueCaps( report_type, 0, 0, 0, caps, caps_count, preparsed_data );
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}
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NTSTATUS WINAPI HidP_InitializeReportForID( HIDP_REPORT_TYPE report_type, UCHAR report_id,
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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;
|
|
unsigned char *report_buf;
|
|
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;
|
|
}
|
|
|
|
report_buf = (unsigned char *)params->report_buf + caps->start_byte;
|
|
copy_bits( 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, ¶ms, &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;
|
|
unsigned char *report_buf;
|
|
|
|
if ((bit_count + 7) / 8 > params->value_len) return HIDP_STATUS_BUFFER_TOO_SMALL;
|
|
|
|
report_buf = (unsigned char *)params->report_buf + caps->start_byte;
|
|
copy_bits( 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, ¶ms, &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, ¶ms, &count );
|
|
}
|
|
|
|
struct set_usage_params
|
|
{
|
|
USAGE usage;
|
|
char *report_buf;
|
|
};
|
|
|
|
static NTSTATUS set_usage( const struct hid_value_caps *caps, void *user )
|
|
{
|
|
const struct hid_value_caps *end = caps;
|
|
struct set_usage_params *params = user;
|
|
ULONG index_min, bit, last;
|
|
unsigned char *report_buf;
|
|
|
|
report_buf = (unsigned char *)params->report_buf + caps->start_byte;
|
|
|
|
if (HID_VALUE_CAPS_IS_ARRAY( caps ))
|
|
{
|
|
while (end->flags & HID_VALUE_CAPS_ARRAY_HAS_MORE) end++;
|
|
index_min = end - caps + 1;
|
|
|
|
for (bit = caps->start_bit, last = bit + caps->report_count * caps->bit_size - 1; bit <= last; bit += 8)
|
|
{
|
|
if (report_buf[bit / 8]) continue;
|
|
report_buf[bit / 8] = index_min + 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;
|
|
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, ¶ms, &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 )
|
|
{
|
|
ULONG index, index_min, index_max, bit, last;
|
|
const struct hid_value_caps *end = caps;
|
|
struct unset_usage_params *params = user;
|
|
unsigned char *report_buf;
|
|
|
|
report_buf = (unsigned char *)params->report_buf + caps->start_byte;
|
|
|
|
if (HID_VALUE_CAPS_IS_ARRAY( caps ))
|
|
{
|
|
while (end->flags & HID_VALUE_CAPS_ARRAY_HAS_MORE) end++;
|
|
index_min = end - caps + 1;
|
|
index_max = index_min + caps->usage_max - caps->usage_min;
|
|
|
|
for (bit = caps->start_bit, last = bit + caps->report_count * caps->bit_size - 1; bit <= last; bit += 8)
|
|
{
|
|
if (!(index = report_buf[bit / 8]) || index < index_min || index > index_max) continue;
|
|
report_buf[bit / 8] = 0;
|
|
params->found = TRUE;
|
|
break;
|
|
}
|
|
|
|
return HIDP_STATUS_NULL;
|
|
}
|
|
|
|
bit = caps->start_bit + params->usage - caps->usage_min;
|
|
if (report_buf[bit / 8] & (1 << (bit % 8))) params->found = TRUE;
|
|
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, ¶ms, &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 = (caps->flags & HID_VALUE_CAPS_IS_ABSOLUTE) ? 1 : 0;
|
|
dst->IsRange = (caps->flags & HID_VALUE_CAPS_IS_RANGE) ? 1 : 0;
|
|
if (!dst->IsRange)
|
|
{
|
|
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;
|
|
}
|
|
dst->IsStringRange = (caps->flags & HID_VALUE_CAPS_IS_STRING_RANGE) ? 1 : 0;
|
|
if (!dst->IsStringRange)
|
|
dst->NotRange.StringIndex = caps->string_min;
|
|
else
|
|
{
|
|
dst->Range.StringMin = caps->string_min;
|
|
dst->Range.StringMax = caps->string_max;
|
|
}
|
|
dst->IsDesignatorRange = (caps->flags & HID_VALUE_CAPS_IS_DESIGNATOR_RANGE) ? 1 : 0;
|
|
if (!dst->IsDesignatorRange)
|
|
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 = (caps->flags & HID_VALUE_CAPS_IS_ABSOLUTE) ? 1 : 0;
|
|
dst->HasNull = HID_VALUE_CAPS_HAS_NULL( caps );
|
|
dst->BitSize = caps->bit_size;
|
|
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;
|
|
dst->IsRange = (caps->flags & HID_VALUE_CAPS_IS_RANGE) ? 1 : 0;
|
|
if (!dst->IsRange)
|
|
{
|
|
dst->ReportCount = caps->report_count;
|
|
dst->NotRange.Usage = caps->usage_min;
|
|
dst->NotRange.DataIndex = caps->data_index_min;
|
|
}
|
|
else
|
|
{
|
|
dst->ReportCount = 1;
|
|
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;
|
|
}
|
|
dst->IsStringRange = (caps->flags & HID_VALUE_CAPS_IS_STRING_RANGE) ? 1 : 0;
|
|
if (!dst->IsStringRange)
|
|
dst->NotRange.StringIndex = caps->string_min;
|
|
else
|
|
{
|
|
dst->Range.StringMin = caps->string_min;
|
|
dst->Range.StringMax = caps->string_max;
|
|
}
|
|
dst->IsDesignatorRange = (caps->flags & HID_VALUE_CAPS_IS_DESIGNATOR_RANGE) ? 1 : 0;
|
|
if (!dst->IsDesignatorRange)
|
|
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;
|
|
const struct hid_value_caps *end = caps;
|
|
ULONG index_min, index_max, bit, last;
|
|
unsigned char *report_buf;
|
|
BYTE index;
|
|
|
|
report_buf = (unsigned char *)params->report_buf + caps->start_byte;
|
|
|
|
if (HID_VALUE_CAPS_IS_ARRAY( caps ))
|
|
{
|
|
while (end->flags & HID_VALUE_CAPS_ARRAY_HAS_MORE) end++;
|
|
index_min = end - caps + 1;
|
|
index_max = index_min + caps->usage_max - caps->usage_min;
|
|
|
|
for (bit = caps->start_bit, last = bit + caps->report_count * caps->bit_size - 1; bit <= last; bit += 8)
|
|
{
|
|
if (!(index = report_buf[bit / 8]) || index < index_min || index > index_max) continue;
|
|
if (params->usages < params->usages_end)
|
|
{
|
|
params->usages->UsagePage = caps->usage_page;
|
|
params->usages->Usage = caps->usage_min + index - index_min;
|
|
}
|
|
params->usages++;
|
|
}
|
|
return HIDP_STATUS_SUCCESS;
|
|
}
|
|
|
|
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 (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, ¶ms, &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 )
|
|
{
|
|
BOOL is_button = caps->flags & HID_VALUE_CAPS_IS_BUTTON;
|
|
BOOL is_range = caps->flags & HID_VALUE_CAPS_IS_RANGE;
|
|
if (is_range || is_button) *(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 index_min, index_max, bit, last, bit_count;
|
|
const struct hid_value_caps *end = caps;
|
|
unsigned char *report_buf;
|
|
BYTE index;
|
|
|
|
if (!caps->bit_size) return HIDP_STATUS_SUCCESS;
|
|
|
|
report_buf = (unsigned char *)params->report_buf + caps->start_byte;
|
|
|
|
if (HID_VALUE_CAPS_IS_ARRAY( caps ))
|
|
{
|
|
while (end->flags & HID_VALUE_CAPS_ARRAY_HAS_MORE) end++;
|
|
index_min = end - caps + 1;
|
|
index_max = index_min + caps->usage_max - caps->usage_min;
|
|
|
|
for (bit = caps->start_bit, last = bit + caps->report_count * caps->bit_size - 1; bit <= last; bit += 8)
|
|
{
|
|
if (!(index = report_buf[bit / 8]) || index < index_min || index > index_max) continue;
|
|
if (data < data_end)
|
|
{
|
|
data->DataIndex = caps->data_index_min + index - index_min;
|
|
data->On = 1;
|
|
}
|
|
data++;
|
|
}
|
|
}
|
|
else if (caps->flags & HID_VALUE_CAPS_IS_BUTTON)
|
|
{
|
|
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;
|
|
bit_count = caps->bit_size * caps->report_count;
|
|
if ((bit_count + 7) / 8 > sizeof(data->RawValue)) return HIDP_STATUS_BUFFER_TOO_SMALL;
|
|
copy_bits( (void *)&data->RawValue, 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, ¶ms, &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_collection_node *collections = HID_COLLECTION_NODES( preparsed );
|
|
ULONG i, count, capacity = *nodes_len;
|
|
|
|
TRACE( "nodes %p, nodes_len %p, preparsed_data %p.\n", nodes, nodes_len, preparsed_data );
|
|
|
|
if (!preparsed || memcmp( preparsed->magic, "HidP KDR", 8 )) return HIDP_STATUS_INVALID_PREPARSED_DATA;
|
|
|
|
count = *nodes_len = preparsed->number_link_collection_nodes;
|
|
if (capacity < count) return HIDP_STATUS_BUFFER_TOO_SMALL;
|
|
|
|
for (i = 0; i < count; ++i)
|
|
{
|
|
nodes[i].LinkUsagePage = collections[i].usage_page;
|
|
nodes[i].LinkUsage = collections[i].usage;
|
|
nodes[i].Parent = collections[i].parent;
|
|
nodes[i].CollectionType = collections[i].collection_type;
|
|
nodes[i].FirstChild = collections[i].first_child;
|
|
nodes[i].NextSibling = collections[i].next_sibling;
|
|
nodes[i].NumberOfChildren = collections[i].number_of_children;
|
|
nodes[i].IsAlias = 0;
|
|
}
|
|
|
|
return HIDP_STATUS_SUCCESS;
|
|
}
|