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btstack_hid_parser: ignore report items without usage

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This commit is contained in:
Matthias Ringwald 2023-11-01 11:38:05 +01:00
parent cd7411deb4
commit dfb01e7774
2 changed files with 11 additions and 3 deletions
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1
CHANGELOG.md
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@ -41,6 +41,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
- AVRCP: shorten default SDP Service and Provider Names
- GATT Client: emit query complete event for gatt_client_discover_characteristic_descriptors in next run loop iteration
- HFP: report 1.9 in SDP record
- HID Parser: ignore Report Items without Usage
- btstack_crypto: allow MBEDTLS config via MBEDTLS_CONFIG_FILE
- remove old Zephyr 1.9 port

13
src/btstack_hid_parser.c
View File

@ -202,11 +202,9 @@ static void btstack_hid_handle_global_item(btstack_hid_parser_t * parser, hid_de
break;
case ReportID:
if (parser->active_record && (parser->global_report_id != item->item_value)){
// log_debug("New report, don't match anymore");
parser->active_record = 0;
}
parser->global_report_id = item->item_value;
// log_info("- Report ID: %02x", parser->global_report_id);
break;
case ReportCount:
parser->global_report_count = item->item_value;
@ -255,6 +253,9 @@ static void hid_find_next_usage(btstack_hid_parser_t * parser){
}
if (parser->have_usage_min && parser->have_usage_max){
parser->available_usages = parser->usage_maximum - parser->usage_minimum + 1u;
if (parser->available_usages < parser->required_usages){
log_debug("Usage Min - Usage Max [%04x..%04x] < Report Count %u", parser->usage_minimum, parser->usage_maximum, parser->required_usages);
}
parser->have_usage_min = 0;
parser->have_usage_max = 0;
}
@ -340,7 +341,7 @@ static void btstack_hid_parser_find_next_usage(btstack_hid_parser_t * parser){
if (parser->available_usages) {
parser->state = BTSTACK_HID_PARSER_USAGES_AVAILABLE;
} else {
log_error("no usages found");
log_debug("no usages found");
parser->state = BTSTACK_HID_PARSER_COMPLETE;
}
} else {
@ -404,6 +405,12 @@ void btstack_hid_parser_get_field(btstack_hid_parser_t * parser, uint16_t * usag
if (is_variable){
parser->usage_minimum++;
parser->available_usages--;
if (parser->usage_minimum > parser->usage_maximum){
// usage min - max range smaller than report count, ignore remaining bit in report
log_debug("Ignoring %u items without Usage", parser->required_usages);
parser->report_pos_in_bit += parser->global_report_size * parser->required_usages;
parser->required_usages = 0;
}
} else {
if (parser->required_usages == 0u){
parser->available_usages = 0;