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btstack/test/avdtp/avdtp_sink.c
Milanka Ringwald 778a7f1f6e avdtp: extracted initiator and acceptor role
2016-10-31 15:50:00 +01:00

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/*
* Copyright (C) 2016 BlueKitchen GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* 4. Any redistribution, use, or modification is done solely for
* personal benefit and not for any commercial purpose or for
* monetary gain.
*
* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Please inquire about commercial licensing options at
* contact@bluekitchen-gmbh.com
*
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "btstack.h"
#include "avdtp.h"
#include "avdtp_sink.h"
#include "avdtp_util.h"
#include "avdtp_initiator.h"
#include "avdtp_acceptor.h"
static const char * default_avdtp_sink_service_name = "BTstack AVDTP Sink Service";
static const char * default_avdtp_sink_service_provider_name = "BTstack AVDTP Sink Service Provider";
static btstack_linked_list_t avdtp_sink_connections = NULL;
static avdtp_sep_t local_seps[MAX_NUM_SEPS];
static uint8_t local_seps_num = 0;
static btstack_packet_handler_t avdtp_sink_callback;
static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size);
static void avdtp_sink_run_for_connection(avdtp_sink_connection_t *connection);
static void (*handle_media_data)(avdtp_sink_connection_t * connection, uint8_t *packet, uint16_t size);
void a2dp_sink_create_sdp_record(uint8_t * service, uint32_t service_record_handle, uint16_t supported_features, const char * service_name, const char * service_provider_name){
uint8_t* attribute;
de_create_sequence(service);
// 0x0000 "Service Record Handle"
de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ServiceRecordHandle);
de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle);
// 0x0001 "Service Class ID List"
de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ServiceClassIDList);
attribute = de_push_sequence(service);
{
de_add_number(attribute, DE_UUID, DE_SIZE_16, AUDIO_SINK_GROUP);
}
de_pop_sequence(service, attribute);
// 0x0004 "Protocol Descriptor List"
de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ProtocolDescriptorList);
attribute = de_push_sequence(service);
{
uint8_t* l2cpProtocol = de_push_sequence(attribute);
{
de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, SDP_L2CAPProtocol);
de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, PSM_AVDTP);
}
de_pop_sequence(attribute, l2cpProtocol);
uint8_t* avProtocol = de_push_sequence(attribute);
{
de_add_number(avProtocol, DE_UUID, DE_SIZE_16, PSM_AVDTP); // avProtocol_service
de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version
}
de_pop_sequence(attribute, avProtocol);
}
de_pop_sequence(service, attribute);
// 0x0005 "Public Browse Group"
de_add_number(service, DE_UINT, DE_SIZE_16, SDP_BrowseGroupList); // public browse group
attribute = de_push_sequence(service);
{
de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_PublicBrowseGroup);
}
de_pop_sequence(service, attribute);
// 0x0009 "Bluetooth Profile Descriptor List"
de_add_number(service, DE_UINT, DE_SIZE_16, SDP_BluetoothProfileDescriptorList);
attribute = de_push_sequence(service);
{
uint8_t *a2dProfile = de_push_sequence(attribute);
{
de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, ADVANCED_AUDIO_DISTRIBUTION);
de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103);
}
de_pop_sequence(attribute, a2dProfile);
}
de_pop_sequence(service, attribute);
// 0x0100 "Service Name"
de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100);
if (service_name){
de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name);
} else {
de_add_data(service, DE_STRING, strlen(default_avdtp_sink_service_name), (uint8_t *) default_avdtp_sink_service_name);
}
// 0x0100 "Provider Name"
de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102);
if (service_provider_name){
de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name);
} else {
de_add_data(service, DE_STRING, strlen(default_avdtp_sink_service_provider_name), (uint8_t *) default_avdtp_sink_service_provider_name);
}
// 0x0311 "Supported Features"
de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311);
de_add_number(service, DE_UINT, DE_SIZE_16, supported_features);
}
uint8_t avdtp_sink_register_stream_end_point(avdtp_sep_type_t sep_type, avdtp_media_type_t media_type){
if (local_seps_num >= MAX_NUM_SEPS){
log_error("avdtp_sink_register_sep: excedeed max sep number %d", MAX_NUM_SEPS);
return 255;
}
uint8_t seid = local_seps_num;
avdtp_sep_t entry = {
seid,
0,
media_type,
sep_type
};
local_seps[local_seps_num] = entry;
local_seps_num++;
return seid;
}
void avdtp_sink_register_media_transport_category(uint8_t seid){
if (seid >= local_seps_num){
log_error("invalid stream end point identifier");
return;
}
uint16_t bitmap = store_bit16(local_seps[seid].registered_service_categories, AVDTP_MEDIA_TRANSPORT, 1);
local_seps[seid].registered_service_categories = bitmap;
printf("registered services AVDTP_MEDIA_TRANSPORT(%d) %02x\n", AVDTP_MEDIA_TRANSPORT, local_seps[seid].registered_service_categories);
}
void avdtp_sink_register_reporting_category(uint8_t seid){
if (seid >= local_seps_num){
log_error("invalid stream end point identifier");
return;
}
uint16_t bitmap = store_bit16(local_seps[seid].registered_service_categories, AVDTP_REPORTING, 1);
local_seps[seid].registered_service_categories = bitmap;
}
void avdtp_sink_register_delay_reporting_category(uint8_t seid){
if (seid >= local_seps_num){
log_error("invalid stream end point identifier");
return;
}
uint16_t bitmap = store_bit16(local_seps[seid].registered_service_categories, AVDTP_DELAY_REPORTING, 1);
local_seps[seid].registered_service_categories = bitmap;
}
void avdtp_sink_register_recovery_category(uint8_t seid, uint8_t maximum_recovery_window_size, uint8_t maximum_number_media_packets){
if (seid >= local_seps_num){
log_error("invalid stream end point identifier");
return;
}
uint16_t bitmap = store_bit16(local_seps[seid].registered_service_categories, AVDTP_RECOVERY, 1);
local_seps[seid].registered_service_categories = bitmap;
local_seps[seid].capabilities.recovery.recovery_type = 0x01; // 0x01 = RFC2733
local_seps[seid].capabilities.recovery.maximum_recovery_window_size = maximum_recovery_window_size;
local_seps[seid].capabilities.recovery.maximum_number_media_packets = maximum_number_media_packets;
}
void avdtp_sink_register_content_protection_category(uint8_t seid, uint8_t cp_type_lsb, uint8_t cp_type_msb, const uint8_t * cp_type_value, uint8_t cp_type_value_len){
if (seid >= local_seps_num){
log_error("invalid stream end point identifier");
return;
}
uint16_t bitmap = store_bit16(local_seps[seid].registered_service_categories, AVDTP_CONTENT_PROTECTION, 1);
local_seps[seid].registered_service_categories = bitmap;
local_seps[seid].capabilities.content_protection.cp_type_lsb = cp_type_lsb;
local_seps[seid].capabilities.content_protection.cp_type_msb = cp_type_msb;
local_seps[seid].capabilities.content_protection.cp_type_value = cp_type_value;
local_seps[seid].capabilities.content_protection.cp_type_value_len = cp_type_value_len;
}
void avdtp_sink_register_header_compression_category(uint8_t seid, uint8_t back_ch, uint8_t media, uint8_t recovery){
if (seid >= local_seps_num){
log_error("invalid stream end point identifier");
return;
}
uint16_t bitmap = store_bit16(local_seps[seid].registered_service_categories, AVDTP_HEADER_COMPRESSION, 1);
local_seps[seid].registered_service_categories = bitmap;
local_seps[seid].capabilities.header_compression.back_ch = back_ch;
local_seps[seid].capabilities.header_compression.media = media;
local_seps[seid].capabilities.header_compression.recovery = recovery;
}
void avdtp_sink_register_media_codec_category(uint8_t seid, avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, const uint8_t * media_codec_info, uint16_t media_codec_info_len){
if (seid >= local_seps_num){
log_error("invalid stream end point identifier");
return;
}
uint16_t bitmap = store_bit16(local_seps[seid].registered_service_categories, AVDTP_MEDIA_CODEC, 1);
local_seps[seid].registered_service_categories = bitmap;
printf("registered services AVDTP_MEDIA_CODEC(%d) %02x\n", AVDTP_MEDIA_CODEC, local_seps[seid].registered_service_categories);
local_seps[seid].capabilities.media_codec.media_type = media_type;
local_seps[seid].capabilities.media_codec.media_codec_type = media_codec_type;
local_seps[seid].capabilities.media_codec.media_codec_information = media_codec_info;
local_seps[seid].capabilities.media_codec.media_codec_information_len = media_codec_info_len;
}
void avdtp_sink_register_multiplexing_category(uint8_t seid, uint8_t fragmentation){
if (seid >= local_seps_num){
log_error("invalid stream end point identifier");
return;
}
uint16_t bitmap = store_bit16(local_seps[seid].registered_service_categories, AVDTP_MULTIPLEXING, 1);
local_seps[seid].registered_service_categories = bitmap;
local_seps[seid].capabilities.multiplexing_mode.fragmentation = fragmentation;
}
// // media, reporting. recovery
// void avdtp_sink_register_media_transport_identifier_for_multiplexing_category(uint8_t seid, uint8_t fragmentation){
// }
static avdtp_sink_connection_t * create_avdtp_sink_connection_context(bd_addr_t bd_addr){
avdtp_sink_connection_t * connection = btstack_memory_avdtp_sink_connection_get();
if (!connection) return NULL;
memset(connection,0, sizeof(avdtp_sink_connection_t));
memcpy(connection->remote_addr, bd_addr, 6);
connection->avdtp_state = AVDTP_IDLE;
connection->initiator_config_state = AVDTP_INITIATOR_STREAM_CONFIG_IDLE;
connection->acceptor_config_state = AVDTP_ACCEPTOR_STREAM_CONFIG_IDLE;
btstack_linked_list_add(&avdtp_sink_connections, (btstack_linked_item_t*)connection);
return connection;
}
static avdtp_sink_connection_t * get_avdtp_sink_connection_context_for_bd_addr(bd_addr_t bd_addr){
btstack_linked_list_iterator_t it;
btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &avdtp_sink_connections);
while (btstack_linked_list_iterator_has_next(&it)){
avdtp_sink_connection_t * connection = (avdtp_sink_connection_t *)btstack_linked_list_iterator_next(&it);
if (memcmp(connection->remote_addr, bd_addr, 6) == 0) {
return connection;
}
}
return NULL;
}
static avdtp_sink_connection_t * get_avdtp_sink_connection_context_for_l2cap_cid(uint16_t l2cap_cid){
btstack_linked_list_iterator_t it;
btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &avdtp_sink_connections);
while (btstack_linked_list_iterator_has_next(&it)){
avdtp_sink_connection_t * connection = (avdtp_sink_connection_t *)btstack_linked_list_iterator_next(&it);
if (connection->l2cap_signaling_cid == l2cap_cid){
return connection;
}
if (connection->l2cap_media_cid == l2cap_cid){
return connection;
}
if (connection->l2cap_reporting_cid == l2cap_cid){
return connection;
}
}
return NULL;
}
static void avdtp_sink_remove_connection_context(avdtp_sink_connection_t * connection){
btstack_linked_list_remove(&avdtp_sink_connections, (btstack_linked_item_t*) connection);
}
static void handle_l2cap_signaling_data_packet(avdtp_sink_connection_t * connection, uint8_t *packet, uint16_t size){
if (size < 2) {
log_error("l2cap data packet too small");
return;
}
avdtp_signaling_packet_header_t signaling_header;
avdtp_read_signaling_header(&signaling_header, packet, size);
// printf("SIGNALING HEADER: tr_label %d, packet_type %d, msg_type %d, signal_identifier %02x\n",
// signaling_header.transaction_label, signaling_header.packet_type, signaling_header.message_type, signaling_header.signal_identifier);
if (connection->avdtp_state == AVDTP_CONFIGURATION_SUBSTATEMACHINE){
if (avdtp_initiator_stream_config_subsm_is_done(connection) || avdtp_acceptor_stream_config_subsm_is_done(connection)){
printf("AVDTP_CONFIGURATION_SUBSTATEMACHINE -> AVDTP_CONFIGURED\n");
connection->avdtp_state = AVDTP_CONFIGURED;
}
}
switch (connection->avdtp_state){
case AVDTP_CONFIGURATION_SUBSTATEMACHINE:
if (signaling_header.message_type == AVDTP_CMD_MSG){
avdtp_acceptor_stream_config_subsm(connection, packet, size);
break;
}
avdtp_initiator_stream_config_subsm(connection, packet, size);
break;
case AVDTP_CONFIGURED:
switch (signaling_header.signal_identifier){
case AVDTP_SI_OPEN:
printf("AVDTP_CONFIGURED -> AVDTP_W2_ANSWER_OPEN_STREAM %d\n", signaling_header.transaction_label);
connection->local_seid = packet[2] >> 2;
connection->avdtp_state = AVDTP_W2_ANSWER_OPEN_STREAM;
connection->acceptor_transaction_label = signaling_header.transaction_label;
l2cap_request_can_send_now_event(connection->l2cap_signaling_cid);
break;
default:
printf("AVDTP_CONFIGURED -> NOT IMPLEMENTED signal_identifier %d, state %d\n", signaling_header.signal_identifier, connection->avdtp_state);
break;
}
break;
case AVDTP_OPEN:
switch (signaling_header.signal_identifier){
case AVDTP_SI_START:
printf("AVDTP_OPEN -> AVDTP_W2_ANSWER_START_SINGLE_STREA %d\n", signaling_header.transaction_label);
connection->local_seid = packet[2] >> 2;
connection->avdtp_state = AVDTP_W2_ANSWER_START_SINGLE_STREAM;
connection->acceptor_transaction_label = signaling_header.transaction_label;
l2cap_request_can_send_now_event(connection->l2cap_signaling_cid);
break;
default:
printf("AVDTP_OPEN -> NOT IMPLEMENTED signal_identifier %d\n", signaling_header.signal_identifier);
break;
}
break;
default:
printf("handle_l2cap_signaling_data_packet: state %d -> NOT IMPLEMENTED signal_identifier %d\n", connection->avdtp_state, signaling_header.signal_identifier);
// printf_hexdump( packet, size );
break;
}
}
static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
bd_addr_t event_addr;
hci_con_handle_t con_handle;
uint16_t psm;
uint16_t remote_cid;
uint16_t local_cid;
avdtp_sink_connection_t * connection = NULL;
switch (packet_type) {
case L2CAP_DATA_PACKET:
connection = get_avdtp_sink_connection_context_for_l2cap_cid(channel);
if (!connection){
log_error("avdtp packet handler L2CAP_DATA_PACKET: connection for local cid 0x%02x not found", channel);
break;
}
if (channel == connection->l2cap_signaling_cid){
handle_l2cap_signaling_data_packet(connection, packet, size);
} else if (channel == connection->l2cap_media_cid){
(*handle_media_data)(connection, packet, size);
} else if (channel == connection->l2cap_reporting_cid){
// TODO
} else {
log_error("avdtp packet handler L2CAP_DATA_PACKET: local cid 0x%02x not found", channel);
}
break;
case HCI_EVENT_PACKET:
switch (hci_event_packet_get_type(packet)) {
case L2CAP_EVENT_INCOMING_CONNECTION:
l2cap_event_incoming_connection_get_address(packet, event_addr);
connection = create_avdtp_sink_connection_context(event_addr);
if (!connection){
log_error("avdtp packet handler L2CAP_EVENT_INCOMING_CONNECTION: connection for bd address %s not found", bd_addr_to_str(event_addr));
break;
}
connection = create_avdtp_sink_connection_context(event_addr);
if (!connection) return;
con_handle = l2cap_event_incoming_connection_get_handle(packet);
psm = l2cap_event_incoming_connection_get_psm(packet);
local_cid = l2cap_event_incoming_connection_get_local_cid(packet);
remote_cid = l2cap_event_incoming_connection_get_remote_cid(packet);
printf("L2CAP_EVENT_INCOMING_CONNECTION %s, handle 0x%02x, psm 0x%02x, local cid 0x%02x, remote cid 0x%02x\n",
bd_addr_to_str(event_addr), con_handle, psm, local_cid, remote_cid);
l2cap_accept_connection(local_cid);
break;
case L2CAP_EVENT_CHANNEL_OPENED:
// inform about new l2cap connection
l2cap_event_channel_opened_get_address(packet, event_addr);
connection = get_avdtp_sink_connection_context_for_bd_addr(event_addr);
if (!connection){
log_error("avdtp sink: L2CAP_EVENT_CHANNEL_OPENED: connection for bd addr %s cannot be found", bd_addr_to_str(event_addr));
return;
}
if (l2cap_event_channel_opened_get_status(packet)){
log_error("L2CAP connection to device %s failed. status code 0x%02x",
bd_addr_to_str(event_addr), l2cap_event_channel_opened_get_status(packet));
break;
}
psm = l2cap_event_channel_opened_get_psm(packet);
if (psm != PSM_AVDTP){
log_error("unexpected PSM - Not implemented yet, avdtp sink: L2CAP_EVENT_CHANNEL_OPENED");
return;
}
con_handle = l2cap_event_channel_opened_get_handle(packet);
printf("avdtp_sink: Channel successfully opened: %s, handle 0x%02x, psm 0x%02x, local cid 0x%02x, remote cid 0x%02x, context %p\n",
bd_addr_to_str(event_addr), con_handle, psm, connection->l2cap_signaling_cid, l2cap_event_channel_opened_get_remote_cid(packet),
connection);
if (connection->avdtp_state == AVDTP_W4_L2CAP_CONNECTED){
printf("AVDTP_W4_L2CAP_CONNECTED -> AVDTP_CONFIGURATION_SUBSTATEMACHINE\n");
connection->avdtp_state = AVDTP_CONFIGURATION_SUBSTATEMACHINE;
avdtp_initiator_stream_config_subsm_init(connection);
avdtp_acceptor_stream_config_subsm_init(connection);
connection->l2cap_signaling_cid = l2cap_event_channel_opened_get_local_cid(packet);
connection->initiator_transaction_label++;
l2cap_request_can_send_now_event(connection->l2cap_signaling_cid);
} else if (connection->avdtp_state <= AVDTP_W4_STREAMING_CONNECTION_OPEN){
printf("AVDTP_W4_STREAMING_CONNECTION_OPEN -> AVDTP_STREAMING\n");
connection->avdtp_state = AVDTP_STREAMING;
connection->l2cap_media_cid = l2cap_event_channel_opened_get_local_cid(packet);
// l2cap_request_can_send_now_event(connection->l2cap_media_cid);
printf("avdtp_sink: L2CAP_EVENT_CHANNEL_OPENED: Media \n");
} else {
printf("avdtp_sink: unexpected connection state: Not implemented yet remote state %d\n", connection->acceptor_config_state);
return;
}
break;
case L2CAP_EVENT_CHANNEL_CLOSED:
// data: event (8), len(8), channel (16)
local_cid = l2cap_event_channel_closed_get_local_cid(packet);
connection = get_avdtp_sink_connection_context_for_l2cap_cid(local_cid);
if (!connection || connection->avdtp_state != AVDTP_W4_L2CAP_DISCONNECTED) return;
log_info("L2CAP_EVENT_CHANNEL_CLOSED cid 0x%0x", local_cid);
avdtp_sink_remove_connection_context(connection);
connection->avdtp_state = AVDTP_IDLE;
break;
case HCI_EVENT_DISCONNECTION_COMPLETE:
break;
case L2CAP_EVENT_CAN_SEND_NOW:
break;
default:
printf("unknown HCI event type %02x\n", hci_event_packet_get_type(packet));
break;
}
break;
default:
// other packet type
break;
}
avdtp_sink_run_for_connection(connection);
}
// TODO: find out which security level is needed, and replace LEVEL_0 in avdtp_sink_init
void avdtp_sink_init(void){
l2cap_register_service(&packet_handler, PSM_AVDTP, 0xffff, LEVEL_0);
}
void avdtp_sink_register_media_handler(void (*callback)(avdtp_sink_connection_t * connection, uint8_t *packet, uint16_t size)){
if (callback == NULL){
log_error("avdtp_sink_register_media_handler called with NULL callback");
return;
}
handle_media_data = callback;
}
void avdtp_sink_register_packet_handler(btstack_packet_handler_t callback){
if (callback == NULL){
log_error("avdtp_sink_register_packet_handler called with NULL callback");
return;
}
avdtp_sink_callback = callback;
}
static void avdtp_sink_run_for_connection(avdtp_sink_connection_t *connection){
if (!connection) return;
if (connection->release_l2cap_connection){
if (connection->avdtp_state > AVDTP_W4_L2CAP_CONNECTED ||
connection->avdtp_state < AVDTP_W4_L2CAP_DISCONNECTED){
connection->release_l2cap_connection = 0;
connection->avdtp_state = AVDTP_W4_L2CAP_DISCONNECTED;
l2cap_disconnect(connection->l2cap_signaling_cid, 0);
return;
}
}
if (!l2cap_can_send_packet_now(connection->l2cap_signaling_cid)) {
log_info("avdtp_sink_run_for_connection: request cannot send for 0x%02x", connection->l2cap_signaling_cid);
return;
}
if (connection->avdtp_state == AVDTP_CONFIGURATION_SUBSTATEMACHINE){
if (avdtp_initiator_stream_config_subsm_is_done(connection) || avdtp_acceptor_stream_config_subsm_is_done(connection)){
printf("AVDTP_CONFIGURATION_SUBSTATEMACHINE -> AVDTP_CONFIGURED\n");
connection->avdtp_state = AVDTP_CONFIGURED;
}
}
switch (connection->avdtp_state){
case AVDTP_CONFIGURATION_SUBSTATEMACHINE:
if (!avdtp_initiator_stream_config_subsm_run_for_connection(connection)) {
avdtp_acceptor_stream_config_subsm_run_for_connection(connection, local_seps, local_seps_num);
}
break;
case AVDTP_W2_ANSWER_OPEN_STREAM:
printf("AVDTP_W2_ANSWER_OPEN_STREAM -> AVDTP_OPEN use %d\n", connection->acceptor_transaction_label);
connection->avdtp_state = AVDTP_OPEN;
avdtp_acceptor_send_accept_response(connection->l2cap_signaling_cid, AVDTP_SI_OPEN, connection->acceptor_transaction_label);
break;
case AVDTP_W2_ANSWER_START_SINGLE_STREAM:
printf("AVDTP_W2_ANSWER_START_SINGLE_STREAM -> AVDTP_W4_STREAMING_CONNECTION_OPEN use %d\n", connection->acceptor_transaction_label);
connection->avdtp_state = AVDTP_W4_STREAMING_CONNECTION_OPEN;
avdtp_acceptor_send_accept_response(connection->l2cap_signaling_cid, AVDTP_SI_START, connection->acceptor_transaction_label);
break;
default:
printf("avdtp_sink_run_for_connection: state %d -> NOT IMPLEMENTED\n", connection->avdtp_state);
break;
}
}
void avdtp_sink_connect(bd_addr_t bd_addr){
avdtp_sink_connection_t * connection = get_avdtp_sink_connection_context_for_bd_addr(bd_addr);
if (connection) {
log_error("avdtp_sink_connect: connection for bd address %s not found", bd_addr_to_str(bd_addr));
return;
}
connection = create_avdtp_sink_connection_context(bd_addr);
if (!connection){
log_error("avdtp_sink_connect: cannot create connection for bd address %s", bd_addr_to_str(bd_addr));
return;
}
connection->avdtp_state = AVDTP_W4_L2CAP_CONNECTED;
l2cap_create_channel(packet_handler, connection->remote_addr, PSM_AVDTP, 0xffff, NULL);
}
void avdtp_sink_disconnect(uint16_t l2cap_cid){
avdtp_sink_connection_t * connection = get_avdtp_sink_connection_context_for_l2cap_cid(l2cap_cid);
if (!connection) {
log_error("avdtp_sink_disconnect: Connection with l2cap_cid %d not found", l2cap_cid);
return;
}
if (connection->avdtp_state == AVDTP_IDLE) return;
if (connection->avdtp_state == AVDTP_W4_L2CAP_DISCONNECTED) return;
connection->release_l2cap_connection = 1;
avdtp_sink_run_for_connection(connection);
}
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