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Sweden-Number/dlls/hidclass.sys/descriptor.c

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/*
* HID descriptor parsing
*
* 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 "config.h"
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#define NONAMELESSUNION
#include "hid.h"
#include "wine/debug.h"
#include "wine/list.h"
WINE_DEFAULT_DEBUG_CHANNEL(hid);
#define USAGE_MAX 10
/* Flags that are defined in the document
"Device Class Definition for Human Interface Devices" */
enum {
INPUT_DATA_CONST = 0x01, /* Data (0) | Constant (1) */
INPUT_ARRAY_VAR = 0x02, /* Array (0) | Variable (1) */
INPUT_ABS_REL = 0x04, /* Absolute (0) | Relative (1) */
INPUT_WRAP = 0x08, /* No Wrap (0) | Wrap (1) */
INPUT_LINEAR = 0x10, /* Linear (0) | Non Linear (1) */
INPUT_PREFSTATE = 0x20, /* Preferred State (0) | No Preferred (1) */
INPUT_NULL = 0x40, /* No Null position (0) | Null state(1) */
INPUT_VOLATILE = 0x80, /* Non Volatile (0) | Volatile (1) */
INPUT_BITFIELD = 0x100 /* Bit Field (0) | Buffered Bytes (1) */
};
enum {
TAG_TYPE_MAIN = 0x0,
TAG_TYPE_GLOBAL,
TAG_TYPE_LOCAL,
TAG_TYPE_RESERVED,
};
enum {
TAG_MAIN_INPUT = 0x08,
TAG_MAIN_OUTPUT = 0x09,
TAG_MAIN_FEATURE = 0x0B,
TAG_MAIN_COLLECTION = 0x0A,
TAG_MAIN_END_COLLECTION = 0x0C
};
enum {
TAG_GLOBAL_USAGE_PAGE = 0x0,
TAG_GLOBAL_LOGICAL_MINIMUM,
TAG_GLOBAL_LOGICAL_MAXIMUM,
TAG_GLOBAL_PHYSICAL_MINIMUM,
TAG_GLOBAL_PHYSICAL_MAXIMUM,
TAG_GLOBAL_UNIT_EXPONENT,
TAG_GLOBAL_UNIT,
TAG_GLOBAL_REPORT_SIZE,
TAG_GLOBAL_REPORT_ID,
TAG_GLOBAL_REPORT_COUNT,
TAG_GLOBAL_PUSH,
TAG_GLOBAL_POP
};
enum {
TAG_LOCAL_USAGE = 0x0,
TAG_LOCAL_USAGE_MINIMUM,
TAG_LOCAL_USAGE_MAXIMUM,
TAG_LOCAL_DESIGNATOR_INDEX,
TAG_LOCAL_DESIGNATOR_MINIMUM,
TAG_LOCAL_DESIGNATOR_MAXIMUM,
TAG_LOCAL_STRING_INDEX,
TAG_LOCAL_STRING_MINIMUM,
TAG_LOCAL_STRING_MAXIMUM,
TAG_LOCAL_DELIMITER
};
static const char* const feature_string[] =
{ "Input", "Output", "Feature" };
struct caps {
USAGE UsagePage;
LONG LogicalMin;
LONG LogicalMax;
LONG PhysicalMin;
LONG PhysicalMax;
ULONG UnitsExp;
ULONG Units;
USHORT BitSize;
UCHAR ReportID;
USHORT ReportCount;
BOOLEAN IsRange;
BOOLEAN IsStringRange;
BOOLEAN IsDesignatorRange;
unsigned int usage_count;
union {
struct {
USAGE UsageMin;
USAGE UsageMax;
USHORT StringMin;
USHORT StringMax;
USHORT DesignatorMin;
USHORT DesignatorMax;
} Range;
struct {
USAGE Usage[USAGE_MAX];
USAGE Reserved1;
USHORT StringIndex;
USHORT Reserved2;
USHORT DesignatorIndex;
USHORT Reserved3;
} NotRange;
} DUMMYUNIONNAME;
int Delim;
};
struct feature {
struct list entry;
struct list col_entry;
struct caps caps;
HIDP_REPORT_TYPE type;
BOOLEAN isData;
BOOLEAN isArray;
BOOLEAN IsAbsolute;
BOOLEAN Wrap;
BOOLEAN Linear;
BOOLEAN prefState;
BOOLEAN HasNull;
BOOLEAN Volatile;
BOOLEAN BitField;
unsigned int index;
struct collection *collection;
};
static const char* const collection_string[] = {
"Physical",
"Application",
"Logical",
"Report",
"Named Array",
"Usage Switch",
"Usage Modifier",
};
struct collection {
struct list entry;
struct caps caps;
unsigned int index;
unsigned int type;
struct collection *parent;
struct list features;
struct list collections;
};
struct caps_stack {
struct list entry;
struct caps caps;
};
static const char* debugstr_usages(struct caps *caps)
{
if (!caps->IsRange)
{
char out[12 * USAGE_MAX];
unsigned int i;
if (caps->usage_count == 0)
return "[ none ]";
out[0] = 0;
for (i = 0; i < caps->usage_count; i++)
sprintf(out + strlen(out), "0x%x ", caps->u.NotRange.Usage[i]);
return wine_dbg_sprintf("[ %s] ", out);
}
else
return wine_dbg_sprintf("[0x%x - 0x%x]", caps->u.Range.UsageMin, caps->u.Range.UsageMax);
}
static const char* debugstr_stringindex(struct caps *caps)
{
if (!caps->IsStringRange)
return wine_dbg_sprintf("%i", caps->u.NotRange.StringIndex);
else
return wine_dbg_sprintf("[%i - %i]", caps->u.Range.StringMin, caps->u.Range.StringMax);
}
static const char* debugstr_designatorindex(struct caps *caps)
{
if (!caps->IsDesignatorRange)
return wine_dbg_sprintf("%i", caps->u.NotRange.DesignatorIndex);
else
return wine_dbg_sprintf("[%i - %i]", caps->u.Range.DesignatorMin, caps->u.Range.DesignatorMax);
}
static void debugstr_caps(const char* type, struct caps *caps)
{
if (!caps)
return;
TRACE("(%s Caps: UsagePage 0x%x; LogicalMin %i; LogicalMax %i; PhysicalMin %i; PhysicalMax %i; UnitsExp %i; Units %i; BitSize %i; ReportID %i; ReportCount %i; Usage %s; StringIndex %s; DesignatorIndex %s; Delim %i;)\n",
type,
caps->UsagePage,
caps->LogicalMin,
caps->LogicalMax,
caps->PhysicalMin,
caps->PhysicalMax,
caps->UnitsExp,
caps->Units,
caps->BitSize,
caps->ReportID,
caps->ReportCount,
debugstr_usages(caps),
debugstr_stringindex(caps),
debugstr_designatorindex(caps),
caps->Delim);
}
static void debug_feature(struct feature *feature)
{
if (!feature)
return;
TRACE("[Feature type %s [%i]; %s; %s; %s; %s; %s; %s; %s; %s; %s]\n",
feature_string[feature->type],
feature->index,
(feature->isData)?"Data":"Const",
(feature->isArray)?"Array":"Var",
(feature->IsAbsolute)?"Abs":"Rel",
(feature->Wrap)?"Wrap":"NoWrap",
(feature->Linear)?"Linear":"NonLinear",
(feature->prefState)?"PrefStat":"NoPrefState",
(feature->HasNull)?"HasNull":"NoNull",
(feature->Volatile)?"Volatile":"NonVolatile",
(feature->BitField)?"BitField":"Buffered");
debugstr_caps("Feature", &feature->caps);
}
static void debug_collection(struct collection *collection)
{
struct feature *fentry;
struct collection *centry;
if (TRACE_ON(hid))
{
TRACE("START Collection %i <<< %s, parent: %p, %i features, %i collections\n", collection->index, collection_string[collection->type], collection->parent, list_count(&collection->features), list_count(&collection->collections));
debugstr_caps("Collection", &collection->caps);
LIST_FOR_EACH_ENTRY(fentry, &collection->features, struct feature, col_entry)
debug_feature(fentry);
LIST_FOR_EACH_ENTRY(centry, &collection->collections, struct collection, entry)
debug_collection(centry);
TRACE(">>> END Collection %i\n", collection->index);
}
}
static void debug_print_button_cap(const CHAR * type, WINE_HID_ELEMENT *wine_element)
{
if (!wine_element->caps.button.IsRange)
TRACE("%s Button: 0x%x/0x%04x: ReportId %i, startBit %i/1\n" , type,
wine_element->caps.button.UsagePage,
wine_element->caps.button.u.NotRange.Usage,
wine_element->caps.value.ReportID,
wine_element->valueStartBit);
else
TRACE("%s Button: 0x%x/[0x%04x-0x%04x]: ReportId %i, startBit %i/%i\n" ,type,
wine_element->caps.button.UsagePage,
wine_element->caps.button.u.Range.UsageMin,
wine_element->caps.button.u.Range.UsageMax,
wine_element->caps.value.ReportID,
wine_element->valueStartBit,
wine_element->bitCount);
}
static void debug_print_value_cap(const CHAR * type, WINE_HID_ELEMENT *wine_element)
{
TRACE("%s Value: 0x%x/0x%x: ReportId %i, IsAbsolute %i, HasNull %i, "
"Bit Size %i, ReportCount %i, UnitsExp %i, Units %i, "
"LogicalMin %i, Logical Max %i, PhysicalMin %i, "
"PhysicalMax %i -- StartBit %i/%i\n", type,
wine_element->caps.value.UsagePage,
wine_element->caps.value.u.NotRange.Usage,
wine_element->caps.value.ReportID,
wine_element->caps.value.IsAbsolute,
wine_element->caps.value.HasNull,
wine_element->caps.value.BitSize,
wine_element->caps.value.ReportCount,
wine_element->caps.value.UnitsExp,
wine_element->caps.value.Units,
wine_element->caps.value.LogicalMin,
wine_element->caps.value.LogicalMax,
wine_element->caps.value.PhysicalMin,
wine_element->caps.value.PhysicalMax,
wine_element->valueStartBit,
wine_element->bitCount);
}
static void debug_print_element(const CHAR* type, WINE_HID_ELEMENT *wine_element)
{
if (wine_element->ElementType == ButtonElement)
debug_print_button_cap(type, wine_element);
else if (wine_element->ElementType == ValueElement)
debug_print_value_cap(type, wine_element);
else
TRACE("%s: UNKNOWN\n", type);
}
static void debug_print_report(const char* type, WINE_HID_REPORT *report)
{
unsigned int i;
TRACE("START Report %i <<< %s report : dwSize: %i elementCount: %i\n",
report->reportID,
type,
report->dwSize,
report->elementCount);
for (i = 0; i < report->elementCount; i++)
debug_print_element(type, &report->Elements[i]);
TRACE(">>> END Report %i\n",report->reportID);
}
static void debug_print_preparsed(WINE_HIDP_PREPARSED_DATA *data)
{
unsigned int i;
WINE_HID_REPORT *r;
if (TRACE_ON(hid))
{
TRACE("START PREPARSED Data <<< dwSize: %i Usage: %i, UsagePage: %i, InputReportByteLength: %i, tOutputReportByteLength: %i, FeatureReportByteLength: %i, NumberLinkCollectionNodes: %i, NumberInputButtonCaps: %i, NumberInputValueCaps: %i,NumberInputDataIndices: %i, NumberOutputButtonCaps: %i, NumberOutputValueCaps: %i, NumberOutputDataIndices: %i, NumberFeatureButtonCaps: %i, NumberFeatureValueCaps: %i, NumberFeatureDataIndices: %i, dwInputReportCount: %i, dwOutputReportCount: %i, dwFeatureReportCount: %i, dwOutputReportOffset: %i, dwFeatureReportOffset: %i\n",
data->dwSize,
data->caps.Usage,
data->caps.UsagePage,
data->caps.InputReportByteLength,
data->caps.OutputReportByteLength,
data->caps.FeatureReportByteLength,
data->caps.NumberLinkCollectionNodes,
data->caps.NumberInputButtonCaps,
data->caps.NumberInputValueCaps,
data->caps.NumberInputDataIndices,
data->caps.NumberOutputButtonCaps,
data->caps.NumberOutputValueCaps,
data->caps.NumberOutputDataIndices,
data->caps.NumberFeatureButtonCaps,
data->caps.NumberFeatureValueCaps,
data->caps.NumberFeatureDataIndices,
data->dwInputReportCount,
data->dwOutputReportCount,
data->dwFeatureReportCount,
data->dwOutputReportOffset,
data->dwFeatureReportOffset);
r = HID_INPUT_REPORTS(data);
for (i = 0; i < data->dwInputReportCount; i++)
{
debug_print_report("INPUT", r);
r = HID_NEXT_REPORT(data, r);
}
r = HID_OUTPUT_REPORTS(data);
for (i = 0; i < data->dwOutputReportCount; i++)
{
debug_print_report("OUTPUT", r);
r = HID_NEXT_REPORT(data, r);
}
r = HID_FEATURE_REPORTS(data);
for (i = 0; i < data->dwFeatureReportCount; i++)
{
debug_print_report("FEATURE", r);
r = HID_NEXT_REPORT(data, r);
}
TRACE(">>> END Preparsed Data\n");
}
}
static int getValue(int bsize, int source)
{
int mask = 0xff;
int negative = 0x80;
int outofrange = 0x100;
int value;
unsigned int i;
if (bsize == 4)
return source;
for (i = 1; i < bsize; i++)
{
mask = (mask<<8) + 0xff;
negative = (negative<<8);
outofrange = (outofrange<<8);
}
value = (source&mask);
if (value&negative)
value = -1 * (outofrange - value);
return value;
}
static void parse_io_feature(unsigned int bSize, int itemVal, int bTag,
unsigned int *feature_index,
struct feature *feature)
{
if (bSize <= 0)
{
return;
}
else
{
feature->isData = ((itemVal & INPUT_DATA_CONST) == 0);
feature->isArray = ((itemVal & INPUT_ARRAY_VAR) == 0);
feature->IsAbsolute = ((itemVal & INPUT_ABS_REL) == 0);
feature->Wrap = ((itemVal & INPUT_WRAP) != 0);
feature->Linear = ((itemVal & INPUT_LINEAR) == 0);
feature->prefState = ((itemVal & INPUT_PREFSTATE) == 0);
feature->HasNull = ((itemVal & INPUT_NULL) != 0);
if (bTag != TAG_MAIN_INPUT)
{
feature->Volatile = ((itemVal & INPUT_VOLATILE) != 0);
}
if (bSize > 1)
{
feature->BitField = ((itemVal & INPUT_BITFIELD) == 0);
}
feature->index = *feature_index;
*feature_index = *feature_index + 1;
}
}
static void parse_collection(unsigned int bSize, int itemVal,
struct collection *collection)
{
if (bSize <= 0)
return;
else
{
collection->type = itemVal;
if (itemVal >= 0x07 && itemVal <= 0x7F) {
ERR(" (Reserved 0x%x )\n", itemVal);
}
else if (itemVal >= 0x80 && itemVal <= 0xFF) {
ERR(" (Vendor Defined 0x%x )\n", itemVal);
}
}
}
static void new_caps(struct caps *caps)
{
caps->IsRange = 0;
caps->IsStringRange = 0;
caps->IsDesignatorRange = 0;
caps->usage_count = 0;
}
static int parse_descriptor(BYTE *descriptor, unsigned int index, unsigned int length,
unsigned int *feature_index, unsigned int *collection_index,
struct collection *collection, struct caps *caps,
struct list *features, struct list *stack)
{
unsigned int i;
for (i = index; i < length;)
{
BYTE b0 = descriptor[i++];
int bSize = b0 & 0x03;
int bType = (b0 >> 2) & 0x03;
int bTag = (b0 >> 4) & 0x0F;
bSize = (bSize == 3) ? 4 : bSize;
if (bType == TAG_TYPE_RESERVED && bTag == 0x0F && bSize == 2 &&
i + 2 < length)
{
/* Long data items: Should be unused */
ERR("Long Data Item, should be unused\n");
}
else
{
int bSizeActual = 0;
int itemVal = 0;
unsigned int j;
for (j = 0; j < bSize; j++)
{
if (i + j < length)
{
itemVal += descriptor[i + j] << (8 * j);
bSizeActual++;
}
}
TRACE(" 0x%x[%i], type %i , tag %i, size %i, val %i\n",b0,i-1,bType, bTag, bSize, itemVal );
if (bType == TAG_TYPE_MAIN)
{
struct feature *feature;
switch(bTag)
{
case TAG_MAIN_INPUT:
feature = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*feature));
list_add_tail(&collection->features, &feature->col_entry);
list_add_tail(features, &feature->entry);
feature->type = HidP_Input;
parse_io_feature(bSize, itemVal, bTag, feature_index, feature);
feature->caps = *caps;
feature->collection = collection;
new_caps(caps);
break;
case TAG_MAIN_OUTPUT:
feature = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*feature));
list_add_tail(&collection->features, &feature->col_entry);
list_add_tail(features, &feature->entry);
feature->type = HidP_Output;
parse_io_feature(bSize, itemVal, bTag, feature_index, feature);
feature->caps = *caps;
feature->collection = collection;
new_caps(caps);
break;
case TAG_MAIN_FEATURE:
feature = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*feature));
list_add_tail(&collection->features, &feature->col_entry);
list_add_tail(features, &feature->entry);
feature->type = HidP_Feature;
parse_io_feature(bSize, itemVal, bTag, feature_index, feature);
feature->caps = *caps;
feature->collection = collection;
new_caps(caps);
break;
case TAG_MAIN_COLLECTION:
{
struct collection *subcollection = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(struct collection));
list_add_tail(&collection->collections, &subcollection->entry);
subcollection->parent = collection;
/* Only set our collection once...
We do not properly handle composite devices yet. */
if (*collection_index == 0)
collection->caps = *caps;
subcollection->caps = *caps;
subcollection->index = *collection_index;
*collection_index = *collection_index + 1;
list_init(&subcollection->features);
list_init(&subcollection->collections);
new_caps(caps);
parse_collection(bSize, itemVal, subcollection);
i = parse_descriptor(descriptor, i+1, length, feature_index, collection_index, subcollection, caps, features, stack);
continue;
}
case TAG_MAIN_END_COLLECTION:
return i;
default:
ERR("Unknown (bTag: 0x%x, bType: 0x%x)\n", bTag, bType);
}
}
else if (bType == TAG_TYPE_GLOBAL)
{
switch(bTag)
{
case TAG_GLOBAL_USAGE_PAGE:
caps->UsagePage = getValue(bSize, itemVal);
break;
case TAG_GLOBAL_LOGICAL_MINIMUM:
caps->LogicalMin = getValue(bSize, itemVal);
break;
case TAG_GLOBAL_LOGICAL_MAXIMUM:
caps->LogicalMax = getValue(bSize, itemVal);
break;
case TAG_GLOBAL_PHYSICAL_MINIMUM:
caps->PhysicalMin = getValue(bSize, itemVal);
break;
case TAG_GLOBAL_PHYSICAL_MAXIMUM:
caps->PhysicalMax = getValue(bSize, itemVal);
break;
case TAG_GLOBAL_UNIT_EXPONENT:
caps->UnitsExp = getValue(bSize, itemVal);
break;
case TAG_GLOBAL_UNIT:
caps->Units = getValue(bSize, itemVal);
break;
case TAG_GLOBAL_REPORT_SIZE:
caps->BitSize = getValue(bSize, itemVal);
break;
case TAG_GLOBAL_REPORT_ID:
caps->ReportID = getValue(bSize, itemVal);
break;
case TAG_GLOBAL_REPORT_COUNT:
caps->ReportCount = getValue(bSize, itemVal);
break;
case TAG_GLOBAL_PUSH:
{
struct caps_stack *saved = HeapAlloc(GetProcessHeap(), 0, sizeof(*saved));
saved->caps = *caps;
TRACE("Push\n");
list_add_tail(stack, &saved->entry);
break;
}
case TAG_GLOBAL_POP:
{
struct list *tail;
struct caps_stack *saved;
TRACE("Pop\n");
tail = list_tail(stack);
if (tail)
{
saved = LIST_ENTRY(tail, struct caps_stack, entry);
*caps = saved->caps;
list_remove(tail);
HeapFree(GetProcessHeap(), 0, saved);
}
else
ERR("Pop but no stack!\n");
break;
}
default:
ERR("Unknown (bTag: 0x%x, bType: 0x%x)\n", bTag, bType);
}
}
else if (bType == TAG_TYPE_LOCAL)
{
switch(bTag)
{
case TAG_LOCAL_USAGE:
if (caps->usage_count >= USAGE_MAX)
FIXME("More than %i individual usages defined\n",USAGE_MAX);
else
{
caps->u.NotRange.Usage[caps->usage_count++] = getValue(bSize, itemVal);
caps->IsRange = FALSE;
}
break;
case TAG_LOCAL_USAGE_MINIMUM:
caps->usage_count = 1;
caps->u.Range.UsageMin = getValue(bSize, itemVal);
caps->IsRange = TRUE;
break;
case TAG_LOCAL_USAGE_MAXIMUM:
caps->usage_count = 1;
caps->u.Range.UsageMax = getValue(bSize, itemVal);
caps->IsRange = TRUE;
break;
case TAG_LOCAL_DESIGNATOR_INDEX:
caps->u.NotRange.DesignatorIndex = getValue(bSize, itemVal);
caps->IsDesignatorRange = FALSE;
break;
case TAG_LOCAL_DESIGNATOR_MINIMUM:
caps->u.Range.DesignatorMin = getValue(bSize, itemVal);
caps->IsDesignatorRange = TRUE;
break;
case TAG_LOCAL_DESIGNATOR_MAXIMUM:
caps->u.Range.DesignatorMax = getValue(bSize, itemVal);
caps->IsDesignatorRange = TRUE;
break;
case TAG_LOCAL_STRING_INDEX:
caps->u.NotRange.StringIndex = getValue(bSize, itemVal);
caps->IsStringRange = FALSE;
break;
case TAG_LOCAL_STRING_MINIMUM:
caps->u.Range.StringMin = getValue(bSize, itemVal);
caps->IsStringRange = TRUE;
break;
case TAG_LOCAL_STRING_MAXIMUM:
caps->u.Range.StringMax = getValue(bSize, itemVal);
caps->IsStringRange = TRUE;
break;
case TAG_LOCAL_DELIMITER:
caps->Delim = getValue(bSize, itemVal);
break;
default:
ERR("Unknown (bTag: 0x%x, bType: 0x%x)\n", bTag, bType);
}
}
else
ERR("Unknown (bTag: 0x%x, bType: 0x%x)\n", bTag, bType);
i += bSize;
}
}
return i;
}
static inline void new_report(WINE_HID_REPORT *wine_report, struct feature* feature)
{
wine_report->reportID = feature->caps.ReportID;
wine_report->dwSize = sizeof(*wine_report) - sizeof(WINE_HID_ELEMENT);
wine_report->elementCount = 0;
}
static void build_elements(WINE_HID_REPORT *wine_report, struct feature* feature, DWORD *bitOffset)
{
unsigned int i;
if (!feature->isData)
{
*bitOffset = *bitOffset + (feature->caps.BitSize * feature->caps.ReportCount);
return;
}
for (i = 0; i < feature->caps.usage_count; i++)
{
WINE_HID_ELEMENT *wine_element = &wine_report->Elements[wine_report->elementCount];
wine_element->valueStartBit = *bitOffset;
if (feature->caps.UsagePage == HID_USAGE_PAGE_BUTTON)
{
wine_element->ElementType = ButtonElement;
wine_element->caps.button.UsagePage = feature->caps.UsagePage;
wine_element->caps.button.ReportID = feature->caps.ReportID;
wine_element->caps.button.BitField = feature->BitField;
wine_element->caps.button.IsRange = feature->caps.IsRange;
wine_element->caps.button.IsStringRange = feature->caps.IsStringRange;
wine_element->caps.button.IsDesignatorRange = feature->caps.IsDesignatorRange;
wine_element->caps.button.IsAbsolute = feature->IsAbsolute;
if (wine_element->caps.button.IsRange)
{
wine_element->bitCount = (feature->caps.u.Range.UsageMax - feature->caps.u.Range.UsageMin) + 1;
*bitOffset = *bitOffset + wine_element->bitCount;
wine_element->caps.button.u.Range.UsageMin = feature->caps.u.Range.UsageMin;
wine_element->caps.button.u.Range.UsageMax = feature->caps.u.Range.UsageMax;
wine_element->caps.button.u.Range.StringMin = feature->caps.u.Range.StringMin;
wine_element->caps.button.u.Range.StringMax = feature->caps.u.Range.StringMax;
wine_element->caps.button.u.Range.DesignatorMin = feature->caps.u.Range.DesignatorMin;
wine_element->caps.button.u.Range.DesignatorMax = feature->caps.u.Range.DesignatorMax;
}
else
{
*bitOffset = *bitOffset + 1;
wine_element->bitCount = 1;
wine_element->caps.button.u.NotRange.Usage = feature->caps.u.NotRange.Usage[i];
wine_element->caps.button.u.NotRange.StringIndex = feature->caps.u.NotRange.StringIndex;
wine_element->caps.button.u.NotRange.DesignatorIndex = feature->caps.u.NotRange.DesignatorIndex;
}
}
else
{
wine_element->ElementType = ValueElement;
wine_element->caps.value.UsagePage = feature->caps.UsagePage;
wine_element->caps.value.ReportID = feature->caps.ReportID;
wine_element->caps.value.BitField = feature->BitField;
wine_element->caps.value.IsRange = feature->caps.IsRange;
wine_element->caps.value.IsStringRange = feature->caps.IsStringRange;
wine_element->caps.value.IsDesignatorRange = feature->caps.IsDesignatorRange;
wine_element->caps.value.IsAbsolute = feature->IsAbsolute;
wine_element->caps.value.HasNull = feature->HasNull;
wine_element->caps.value.BitSize = feature->caps.BitSize;
if (feature->caps.usage_count > 1)
{
if (feature->caps.ReportCount > feature->caps.usage_count)
wine_element->caps.value.ReportCount = feature->caps.ReportCount / feature->caps.usage_count;
else
wine_element->caps.value.ReportCount = 1;
}
else
wine_element->caps.value.ReportCount = feature->caps.ReportCount;
wine_element->bitCount = (feature->caps.BitSize * wine_element->caps.value.ReportCount);
*bitOffset = *bitOffset + wine_element->bitCount;
wine_element->caps.value.UnitsExp = feature->caps.UnitsExp;
wine_element->caps.value.Units = feature->caps.Units;
wine_element->caps.value.LogicalMin = feature->caps.LogicalMin;
wine_element->caps.value.LogicalMax = feature->caps.LogicalMax;
wine_element->caps.value.PhysicalMin = feature->caps.PhysicalMin;
wine_element->caps.value.PhysicalMax = feature->caps.PhysicalMax;
if (wine_element->caps.value.IsRange)
{
wine_element->caps.value.u.Range.UsageMin = feature->caps.u.Range.UsageMin;
wine_element->caps.value.u.Range.UsageMax = feature->caps.u.Range.UsageMax;
wine_element->caps.value.u.Range.StringMin = feature->caps.u.Range.StringMin;
wine_element->caps.value.u.Range.StringMax = feature->caps.u.Range.StringMax;
wine_element->caps.value.u.Range.DesignatorMin = feature->caps.u.Range.DesignatorMin;
wine_element->caps.value.u.Range.DesignatorMax = feature->caps.u.Range.DesignatorMax;
}
else
{
wine_element->caps.value.u.NotRange.Usage = feature->caps.u.NotRange.Usage[i];
wine_element->caps.value.u.NotRange.StringIndex = feature->caps.u.NotRange.StringIndex;
wine_element->caps.value.u.NotRange.DesignatorIndex = feature->caps.u.NotRange.DesignatorIndex;
}
}
wine_report->elementCount++;
}
}
static void count_elements(struct feature* feature, USHORT *buttons, USHORT *values)
{
if (feature->caps.UsagePage == HID_USAGE_PAGE_BUTTON)
{
if (feature->caps.IsRange)
*buttons = *buttons + 1;
else
*buttons = *buttons + feature->caps.usage_count;
}
else
{
if (feature->caps.IsRange)
*values = *values + 1;
else
*values = *values + feature->caps.usage_count;
}
}
static WINE_HIDP_PREPARSED_DATA* build_PreparseData(
struct feature **features, int feature_count,
struct feature **input_features, int i_count,
struct feature **output_features, int o_count,
struct feature **feature_features, int f_count,
struct collection *base_collection)
{
WINE_HIDP_PREPARSED_DATA *data;
WINE_HID_REPORT *wine_report = NULL;
DWORD bitOffset, bitLength;
unsigned int report_count = 1;
unsigned int i;
unsigned int element_count;
unsigned int size = 0;
if (features[0]->caps.ReportID != 0)
{
unsigned int *report_ids;
unsigned int cnt = max(i_count, o_count);
cnt = max(cnt, f_count);
report_ids = HeapAlloc(GetProcessHeap(), 0 , sizeof(*report_ids) * cnt);
if (i_count)
{
report_ids[0] = input_features[0]->caps.ReportID;
for (i = 1; i < i_count; i++)
{
unsigned int j;
unsigned int found = FALSE;
for (j = 0; !found && j < i_count; j++)
{
if (report_ids[j] == input_features[i]->caps.ReportID)
found = TRUE;
}
if (!found)
{
report_ids[report_count] = input_features[i]->caps.ReportID;
report_count++;
}
}
}
if (o_count)
{
report_count++;
report_ids[0] = output_features[0]->caps.ReportID;
for (i = 1; i < o_count; i++)
{
unsigned int j;
unsigned int found = FALSE;
for (j = 0; !found && j < o_count; j++)
{
if (report_ids[j] == output_features[i]->caps.ReportID)
found = TRUE;
}
if (!found)
{
report_ids[report_count] = output_features[i]->caps.ReportID;
report_count++;
}
}
}
if (f_count)
{
report_count++;
report_ids[0] = feature_features[0]->caps.ReportID;
for (i = 1; i < f_count; i++)
{
unsigned int j;
unsigned int found = FALSE;
for (j = 0; !found && j < f_count; j++)
{
if (report_ids[j] == feature_features[i]->caps.ReportID)
found = TRUE;
}
if (!found)
{
report_ids[report_count] = feature_features[i]->caps.ReportID;
report_count++;
}
}
}
HeapFree(GetProcessHeap(), 0, report_ids);
}
else
{
if (o_count) report_count++;
if (f_count) report_count++;
}
element_count = 0;
for (i = 0; i < feature_count; i++)
element_count += features[i]->caps.usage_count;
size = sizeof(WINE_HIDP_PREPARSED_DATA) +
(element_count * sizeof(WINE_HID_ELEMENT)) +
(report_count * sizeof(WINE_HID_REPORT));
TRACE("%i reports %i elements -> size %i\n",report_count, element_count, size);
data = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
data->magic = HID_MAGIC;
data->dwSize = size;
data->caps.Usage = base_collection->caps.u.NotRange.Usage[0];
data->caps.UsagePage = base_collection->caps.UsagePage;
wine_report = data->InputReports;
if (i_count)
{
bitLength = 0;
new_report(wine_report, input_features[0]);
data->dwInputReportCount++;
if (input_features[0]->caps.ReportID != 0)
bitOffset = 8;
else
bitOffset = 0;
for (i = 0; i < i_count; i++)
{
if (input_features[i]->caps.ReportID != wine_report->reportID)
{
wine_report->dwSize += (sizeof(WINE_HID_ELEMENT) * wine_report->elementCount);
wine_report = (WINE_HID_REPORT*)(((BYTE*)wine_report)+wine_report->dwSize);
new_report(wine_report, input_features[i]);
data->dwInputReportCount++;
bitLength = max(bitOffset, bitLength);
if (input_features[i]->caps.ReportID != 0)
bitOffset = 8;
else
bitOffset = 0;
}
build_elements(wine_report, input_features[i], &bitOffset);
count_elements(input_features[i], &data->caps.NumberInputButtonCaps,
&data->caps.NumberInputValueCaps);
}
wine_report->dwSize += (sizeof(WINE_HID_ELEMENT) * wine_report->elementCount);
bitLength = max(bitOffset, bitLength);
data->caps.InputReportByteLength = ((bitLength + 7) & ~7)/8;
}
if (o_count)
{
bitLength = 0;
wine_report = (WINE_HID_REPORT*)(((BYTE*)wine_report)+wine_report->dwSize);
data->dwOutputReportOffset = (BYTE*)wine_report - (BYTE*)data->InputReports;
new_report(wine_report, output_features[0]);
data->dwOutputReportCount++;
if (output_features[0]->caps.ReportID != 0)
bitOffset = 8;
else
bitOffset = 0;
for (i = 0; i < o_count; i++)
{
if (output_features[i]->caps.ReportID != wine_report->reportID)
{
wine_report->dwSize += (sizeof(WINE_HID_ELEMENT) * wine_report->elementCount);
wine_report = (WINE_HID_REPORT*)(((BYTE*)wine_report)+wine_report->dwSize);
new_report(wine_report, output_features[i]);
data->dwOutputReportCount++;
bitLength = max(bitOffset, bitLength);
if (output_features[0]->caps.ReportID != 0)
bitOffset = 8;
else
bitOffset = 0;
}
build_elements(wine_report, output_features[i], &bitOffset);
count_elements(output_features[i], &data->caps.NumberOutputButtonCaps,
&data->caps.NumberOutputValueCaps);
}
wine_report->dwSize += (sizeof(WINE_HID_ELEMENT) * wine_report->elementCount);
bitLength = max(bitOffset, bitLength);
data->caps.OutputReportByteLength = ((bitLength + 7) & ~7)/8;
}
if (f_count)
{
bitLength = 0;
wine_report = (WINE_HID_REPORT*)(((BYTE*)wine_report)+wine_report->dwSize);
data->dwFeatureReportOffset = (BYTE*)wine_report - (BYTE*)data->InputReports;
new_report(wine_report, feature_features[0]);
data->dwFeatureReportCount++;
if (feature_features[0]->caps.ReportID != 0)
bitOffset = 8;
else
bitOffset = 0;
for (i = 0; i < f_count; i++)
{
if (feature_features[i]->caps.ReportID != wine_report->reportID)
{
wine_report->dwSize += (sizeof(WINE_HID_ELEMENT) * wine_report->elementCount);
wine_report = (WINE_HID_REPORT*)((BYTE*)wine_report+wine_report->dwSize);
new_report(wine_report, feature_features[i]);
data->dwFeatureReportCount++;
bitLength = max(bitOffset, bitLength);
if (feature_features[0]->caps.ReportID != 0)
bitOffset = 8;
else
bitOffset = 0;
}
build_elements(wine_report, feature_features[i], &bitOffset);
count_elements(feature_features[i], &data->caps.NumberFeatureButtonCaps,
&data->caps.NumberFeatureValueCaps);
}
bitLength = max(bitOffset, bitLength);
data->caps.FeatureReportByteLength = ((bitLength + 7) & ~7)/8;
}
return data;
}
static void free_collection(struct collection *collection)
{
struct feature *fentry, *fnext;
struct collection *centry, *cnext;
LIST_FOR_EACH_ENTRY_SAFE(centry, cnext, &collection->collections, struct collection, entry)
{
list_remove(&centry->entry);
free_collection(centry);
}
LIST_FOR_EACH_ENTRY_SAFE(fentry, fnext, &collection->features, struct feature, col_entry)
{
list_remove(&fentry->col_entry);
HeapFree(GetProcessHeap(), 0, fentry);
}
HeapFree(GetProcessHeap(), 0, collection);
}
static int compare_reports(const void *a, const void* b)
{
struct feature *f1 = *(struct feature **)a;
struct feature *f2 = *(struct feature **)b;
int c = (f1->caps.ReportID - f2->caps.ReportID);
if (c) return c;
return (f1->index - f2->index);
}
WINE_HIDP_PREPARSED_DATA* ParseDescriptor(BYTE *descriptor, unsigned int length)
{
WINE_HIDP_PREPARSED_DATA *data = NULL;
struct collection *base;
struct caps caps;
struct list features;
struct list caps_stack;
unsigned int feature_count = 0;
unsigned int cidx;
if (TRACE_ON(hid))
{
TRACE("Descriptor[%i]: ", length);
for (cidx = 0; cidx < length; cidx++)
{
TRACE("%x ",descriptor[cidx]);
if ((cidx+1) % 80 == 0)
TRACE("\n");
}
TRACE("\n");
}
list_init(&features);
list_init(&caps_stack);
base = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*base));
base->index = 1;
list_init(&base->features);
list_init(&base->collections);
memset(&caps, 0, sizeof(caps));
cidx = 0;
parse_descriptor(descriptor, 0, length, &feature_count, &cidx, base, &caps, &features, &caps_stack);
debug_collection(base);
if (!list_empty(&caps_stack))
{
struct caps_stack *entry, *cursor;
ERR("%i unpopped device caps on the stack\n", list_count(&caps_stack));
LIST_FOR_EACH_ENTRY_SAFE(entry, cursor, &caps_stack, struct caps_stack, entry)
{
list_remove(&entry->entry);
HeapFree(GetProcessHeap(), 0, entry);
}
}
cidx = 2;
if (feature_count)
{
struct feature *entry;
struct feature** sorted_features;
struct feature** input_features;
struct feature** output_features;
struct feature** feature_features;
unsigned int i_count, o_count, f_count;
unsigned int i;
i_count = o_count = f_count = 0;
sorted_features = HeapAlloc(GetProcessHeap(), 0, sizeof(*sorted_features) * feature_count);
input_features = HeapAlloc(GetProcessHeap(), 0, sizeof(*input_features) * feature_count);
output_features = HeapAlloc(GetProcessHeap(), 0, sizeof(*output_features) * feature_count);
feature_features = HeapAlloc(GetProcessHeap(), 0, sizeof(*feature_features) * feature_count);
i = 0;
LIST_FOR_EACH_ENTRY(entry, &features, struct feature, entry)
sorted_features[i++] = entry;
/* Sort features base on report if there are multiple reports */
if (sorted_features[0]->caps.ReportID != 0)
qsort(sorted_features, feature_count, sizeof(struct feature*), compare_reports);
for (i = 0; i < feature_count; i++)
{
switch (sorted_features[i]->type)
{
case HidP_Input:
input_features[i_count] = sorted_features[i];
i_count++;
break;
case HidP_Output:
output_features[o_count] = sorted_features[i];
o_count++;
break;
case HidP_Feature:
feature_features[f_count] = sorted_features[i];
f_count++;
break;
default:
ERR("Unknown type %i\n",sorted_features[i]->type);
}
}
if (TRACE_ON(hid))
{
TRACE("DUMP FEATURES:\n");
TRACE("----INPUT----\n");
for (cidx = 0; cidx < i_count; cidx++)
debug_feature(input_features[cidx]);
TRACE("----OUTPUT----\n");
for (cidx = 0; cidx < o_count; cidx++)
debug_feature(output_features[cidx]);
TRACE("----FEATURE----\n");
for (cidx = 0; cidx < f_count; cidx++)
debug_feature(feature_features[cidx]);
}
data = build_PreparseData(sorted_features, feature_count, input_features, i_count, output_features, o_count, feature_features, f_count, base);
debug_print_preparsed(data);
HeapFree(GetProcessHeap(), 0, sorted_features);
HeapFree(GetProcessHeap(), 0, input_features);
HeapFree(GetProcessHeap(), 0, output_features);
HeapFree(GetProcessHeap(), 0, feature_features);
}
free_collection(base);
/* We do not have to free the list as free_collection does all the work */
return data;
}
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