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avrcp_browsing_target: implement get_item_attributes

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Milanka Ringwald 2024-11-12 14:00:50 +01:00 committed by Matthias Ringwald
parent 492ca04e63
commit ef99ca1e18
2 changed files with 95 additions and 0 deletions
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94
src/classic/avrcp_browsing_target.c
View File

@ -156,6 +156,30 @@ static void avrcp_browsing_target_emit_change_path(btstack_packet_handler_t call
(*callback)(HCI_EVENT_PACKET, 0, event, pos);
}
static void avrcp_browsing_target_emit_get_item_attributes(btstack_packet_handler_t callback, uint16_t browsing_cid, uint16_t uid_counter, uint8_t scope, uint8_t * item_id, uint8_t attr_num, uint8_t * attr_list){
btstack_assert(callback != NULL);
btstack_assert(attr_num <= AVRCP_MEDIA_ATTR_NUM);
uint8_t event[19 + 4 * AVRCP_MEDIA_ATTR_NUM];
int pos = 0;
event[pos++] = HCI_EVENT_AVRCP_META;
event[pos++] = sizeof(event) - 2;
event[pos++] = AVRCP_SUBEVENT_BROWSING_GET_ITEM_ATTRIBUTES;
little_endian_store_16(event, pos, browsing_cid);
pos += 2;
little_endian_store_16(event, pos, uid_counter);
pos += 2;
event[pos++] = scope;
memcpy(&event[pos], item_id, 8);
pos += 8;
uint16_t attr_len = attr_num * 4;
little_endian_store_16(event, pos, attr_len);
pos += 2;
memcpy(&event[pos], attr_list, attr_len);
pos += attr_len;
(*callback)(HCI_EVENT_PACKET, 0, event, pos);
}
static void avrcp_browsing_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
UNUSED(size);
@ -253,6 +277,24 @@ static void avrcp_browsing_target_packet_handler(uint8_t packet_type, uint16_t c
avrcp_browsing_target_emit_change_path(avrcp_target_context.browsing_avrcp_callback, channel, uid_counter, direction, item_id);
break;
case AVRCP_PDU_ID_GET_ITEM_ATTRIBUTES:{
if (parameter_length < 12){
avrcp_browsing_target_response_general_reject(browsing_connection, AVRCP_STATUS_INVALID_COMMAND);
break;
}
uint8_t scope = packet[pos++];
item_id = &packet[pos];
pos += 8;
uid_counter = big_endian_read_16(packet, pos);
pos += 2;
uint8_t attr_num = packet[pos++];
uint8_t * attr_list = &packet[pos];
avrcp_browsing_target_emit_get_item_attributes(avrcp_target_context.browsing_avrcp_callback, channel, uid_counter, scope, item_id, attr_num, attr_list);
break;
}
default:
avrcp_browsing_target_response_general_reject(browsing_connection, AVRCP_STATUS_INVALID_COMMAND);
log_info("not parsed pdu ID 0x%02x", browsing_connection->pdu_id);
@ -395,7 +437,59 @@ uint8_t avrcp_browsing_target_send_change_path_response(uint16_t avrcp_browsing_
pos += 2;
connection->cmd_operands[pos++] = status;
big_endian_store_32(connection->cmd_operands, pos, num_items);
pos += 4;
connection->cmd_operands_length = pos;
connection->state = AVCTP_W2_SEND_RESPONSE;
avrcp_browsing_request_can_send_now(connection, connection->l2cap_browsing_cid);
return ERROR_CODE_SUCCESS;
}
uint8_t avrcp_browsing_target_send_get_item_attributes_response(uint16_t avrcp_browsing_cid, avrcp_status_code_t status, uint8_t * attr_list, uint16_t attr_list_size, uint8_t num_items){
avrcp_connection_t * avrcp_connection = avrcp_get_connection_for_browsing_cid_for_role(AVRCP_TARGET, avrcp_browsing_cid);
if (!avrcp_connection){
log_error("Could not find an AVRCP Target connection for browsing_cid 0x%02x.", avrcp_browsing_cid);
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
}
avrcp_browsing_connection_t * connection = avrcp_connection->browsing_connection;
if (!connection){
log_info("Could not find a browsing connection.");
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
}
if (connection->state != AVCTP_CONNECTION_OPENED){
return ERROR_CODE_COMMAND_DISALLOWED;
}
// TODO: fragmentation
if (attr_list_size > (sizeof(connection->cmd_operands) - 5)){
connection->attr_list = attr_list;
connection->attr_list_size = attr_list_size;
log_info(" todo: list too big, invoke fragmentation");
return 1;
}
uint16_t pos = 0;
connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ITEM_ATTRIBUTES;
uint8_t param_length_pos = pos;
big_endian_store_16(connection->cmd_operands, pos, 1);
pos += 2;
connection->cmd_operands[pos++] = status;
if (status != AVRCP_STATUS_SUCCESS){
connection->cmd_operands_length = pos;
connection->state = AVCTP_W2_SEND_RESPONSE;
avrcp_browsing_request_can_send_now(connection, connection->l2cap_browsing_cid);
return ERROR_CODE_SUCCESS;
}
connection->cmd_operands[pos++] = num_items;
(void)memcpy(&connection->cmd_operands[pos], attr_list, attr_list_size);
pos += attr_list_size;
big_endian_store_16(connection->cmd_operands, param_length_pos, pos - 3);
connection->cmd_operands_length = pos;
connection->state = AVCTP_W2_SEND_RESPONSE;
avrcp_browsing_request_can_send_now(connection, connection->l2cap_browsing_cid);
return ERROR_CODE_SUCCESS;

1
src/classic/avrcp_browsing_target.h
View File

@ -99,6 +99,7 @@ uint8_t avrcp_browsing_target_send_get_folder_items_response(uint16_t browsing_c
uint8_t avrcp_browsing_target_send_get_total_num_items_response(uint16_t browsing_cid, uint16_t uid_counter, uint32_t total_num_items);
uint8_t avrcp_browsing_target_send_change_path_response(uint16_t avrcp_browsing_cid, uint16_t uid_counter, avrcp_status_code_t status, uint32_t num_items);
uint8_t avrcp_browsing_target_send_get_item_attributes_response(uint16_t avrcp_browsing_cid, avrcp_status_code_t status, uint8_t * attr_list, uint16_t attr_list_size, uint8_t num_items);
/**
* @brief De-Init AVRCP Browsing Controller