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hidclass.sys: Compute report sizes during parsing. 

Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Rémi Bernon 2021-06-21 09:05:19 +02:00 committed by Alexandre Julliard
parent 9c77c44509
commit 7af8ca6371
1 changed files with 18 additions and 6 deletions
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24
dlls/hidclass.sys/descriptor.c
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@ -286,6 +286,9 @@ struct hid_parser_state
struct hid_value_caps *collections;
DWORD collections_size;
ULONG bit_size[3][256];
USHORT *byte_size[3]; /* pointers to caps */
};
static BOOL array_reserve( struct hid_value_caps **array, DWORD *array_size, DWORD index )
@ -444,6 +447,8 @@ static BOOL parse_end_collection( struct hid_parser_state *state )
static BOOL parse_new_value_caps( struct hid_parser_state *state, HIDP_REPORT_TYPE type, struct collection *collection )
{
USHORT *byte_size = state->byte_size[type];
ULONG *bit_size = &state->bit_size[type][state->items.report_id];
struct feature *feature;
int j;
@ -463,10 +468,22 @@ static BOOL parse_new_value_caps( struct hid_parser_state *state, HIDP_REPORT_TY
}
}
if (!*bit_size) *bit_size = 8;
*bit_size += state->items.bit_size * state->items.report_count;
*byte_size = max( *byte_size, (*bit_size + 7) / 8 );
reset_local_items( state );
return TRUE;
}
static void init_parser_state( struct hid_parser_state *state )
{
memset( state, 0, sizeof(*state) );
state->byte_size[HidP_Input] = &state->caps.InputReportByteLength;
state->byte_size[HidP_Output] = &state->caps.OutputReportByteLength;
state->byte_size[HidP_Feature] = &state->caps.FeatureReportByteLength;
}
static void free_parser_state( struct hid_parser_state *state )
{
if (state->global_idx) ERR( "%u unpopped device caps on the stack\n", state->global_idx );
@ -747,20 +764,14 @@ static void preparse_collection(const struct collection *root, const struct coll
case HidP_Input:
build_elements(report, elem, f, &data->caps.NumberInputDataIndices);
count_elements(f, &data->caps.NumberInputButtonCaps, &data->caps.NumberInputValueCaps);
data->caps.InputReportByteLength =
max(data->caps.InputReportByteLength, (report->bitSize + 7) / 8);
break;
case HidP_Output:
build_elements(report, elem, f, &data->caps.NumberOutputDataIndices);
count_elements(f, &data->caps.NumberOutputButtonCaps, &data->caps.NumberOutputValueCaps);
data->caps.OutputReportByteLength =
max(data->caps.OutputReportByteLength, (report->bitSize + 7) / 8);
break;
case HidP_Feature:
build_elements(report, elem, f, &data->caps.NumberFeatureDataIndices);
count_elements(f, &data->caps.NumberFeatureButtonCaps, &data->caps.NumberFeatureValueCaps);
data->caps.FeatureReportByteLength =
max(data->caps.FeatureReportByteLength, (report->bitSize + 7) / 8);
break;
}
}
@ -865,6 +876,7 @@ WINE_HIDP_PREPARSED_DATA* ParseDescriptor(BYTE *descriptor, unsigned int length)
}
list_init(&base->features);
list_init(&base->collections);
init_parser_state( state );
if (parse_descriptor( descriptor, 0, length, base, state ) < 0)
{