/* * Copyright (C) 2022 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 BLUEKITCHEN * GMBH 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 #include #include "a2dp.h" #include "l2cap.h" #include "classic/sdp_util.h" #include "classic/avdtp_source.h" #include "classic/a2dp_source.h" #include "btstack_event.h" #include "bluetooth_sdp.h" #include "bluetooth_psm.h" #define BTSTACK_FILE__ "a2dp.c" #include #include "bluetooth.h" #include "classic/a2dp.h" #include "classic/avdtp_util.h" #include "btstack_debug.h" // ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG has been replaced by ENABLE_A2DP_EXPLICIT_CONFIG which is valid for both roles #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG #error "Please define ENABLE_A2DP_EXPLICIT_CONFIG instead of ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG" #endif #define AVDTP_MAX_SEP_NUM 10 #define A2DP_SET_CONFIG_DELAY_MS 200 static void a2dp_config_process_discover_seps_with_next_waiting_connection(void); // higher layer callbacks static btstack_packet_handler_t a2dp_source_callback; static btstack_packet_handler_t a2dp_sink_callback; // config process - singletons using sep_discovery_cid is used as mutex static avdtp_role_t a2dp_config_process_role; static uint16_t a2dp_config_process_sep_discovery_cid; static uint16_t a2dp_config_process_sep_discovery_count; static uint16_t a2dp_config_process_sep_discovery_index; static avdtp_sep_t a2dp_config_process_sep_discovery_seps[AVDTP_MAX_SEP_NUM]; static btstack_timer_source_t a2dp_config_process_set_config_timer; static bool a2dp_config_process_set_config_timer_active; void a2dp_init(void) { } void a2dp_deinit(void){ a2dp_config_process_sep_discovery_cid = 0; a2dp_source_callback = NULL; a2dp_sink_callback = NULL; } void a2dp_create_sdp_record(uint8_t * service, uint32_t service_record_handle, uint16_t service_class_uuid, 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, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 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, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); attribute = de_push_sequence(service); { de_add_number(attribute, DE_UUID, DE_SIZE_16, service_class_uuid); } de_pop_sequence(service, attribute); // 0x0004 "Protocol Descriptor List" de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); attribute = de_push_sequence(service); { uint8_t* l2cpProtocol = de_push_sequence(attribute); { de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); } de_pop_sequence(attribute, l2cpProtocol); uint8_t* avProtocol = de_push_sequence(attribute); { de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_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, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group attribute = de_push_sequence(service); { de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); } de_pop_sequence(service, attribute); // 0x0009 "Bluetooth Profile Descriptor List" de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); attribute = de_push_sequence(service); { uint8_t *a2dProfile = de_push_sequence(attribute); { de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_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); de_add_data(service, DE_STRING, (uint16_t) strlen(service_name), (uint8_t *) service_name); // 0x0100 "Provider Name" de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); de_add_data(service, DE_STRING, (uint16_t)strlen(service_provider_name), (uint8_t *) 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 a2dp_subevent_id_for_avdtp_subevent_id(uint8_t subevent){ switch (subevent){ case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION; default: btstack_unreachable(); return 0; } } static void a2dp_replace_subevent_id_and_emit(btstack_packet_handler_t callback, uint8_t * packet, uint16_t size, uint8_t subevent_id){ UNUSED(size); btstack_assert(callback != NULL); // cache orig event and subevent id uint8_t orig_event_id = packet[0]; uint8_t orig_subevent_id = packet[2]; // execute callback packet[0] = HCI_EVENT_A2DP_META; packet[2] = subevent_id; (*callback)(HCI_EVENT_PACKET, 0, packet, size); // restore id packet[0] = orig_event_id; packet[2] = orig_subevent_id; } void a2dp_register_source_packet_handler(btstack_packet_handler_t callback){ btstack_assert(callback != NULL); a2dp_source_callback = callback; } void a2dp_register_sink_packet_handler(btstack_packet_handler_t callback){ btstack_assert(callback != NULL); a2dp_sink_callback = callback; } void a2dp_replace_subevent_id_and_emit_source(uint8_t * packet, uint16_t size, uint8_t subevent_id) { a2dp_replace_subevent_id_and_emit(a2dp_source_callback, packet, size, subevent_id); } void a2dp_replace_subevent_id_and_emit_sink(uint8_t *packet, uint16_t size, uint8_t subevent_id) { a2dp_replace_subevent_id_and_emit(a2dp_sink_callback, packet, size, subevent_id); } static void a2dp_replace_subevent_id_and_emit_for_role(avdtp_role_t role, uint8_t * packet, uint16_t size, uint8_t subevent_id) { if (role == AVDTP_ROLE_SOURCE){ a2dp_replace_subevent_id_and_emit_source(packet, size, subevent_id); } else { a2dp_replace_subevent_id_and_emit_sink(packet, size, subevent_id); } } static void a2dp_emit_role(avdtp_role_t role, uint8_t * packet, uint16_t size){ if (role == AVDTP_ROLE_SOURCE){ (*a2dp_source_callback)(HCI_EVENT_PACKET, 0, packet, size); } else { (*a2dp_sink_callback)(HCI_EVENT_PACKET, 0, packet, size); } } static void a2dp_emit_stream_event_for_role(avdtp_role_t role, uint16_t cid, uint8_t local_seid, uint8_t subevent_id) { uint8_t event[6]; int pos = 0; event[pos++] = HCI_EVENT_A2DP_META; event[pos++] = sizeof(event) - 2; event[pos++] = subevent_id; little_endian_store_16(event, pos, cid); pos += 2; event[pos++] = local_seid; a2dp_emit_role(role, event, sizeof(event)); } static void a2dp_emit_stream_reconfigured_role(avdtp_role_t role, uint16_t cid, uint8_t local_seid, uint8_t status){ uint8_t event[7]; int pos = 0; event[pos++] = HCI_EVENT_A2DP_META; event[pos++] = sizeof(event) - 2; event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; little_endian_store_16(event, pos, cid); pos += 2; event[pos++] = local_seid; event[pos++] = status; a2dp_emit_role(role, event, sizeof(event)); } static void a2dp_emit_streaming_connection_failed_for_role(avdtp_role_t role, avdtp_connection_t *connection, uint8_t status) { uint8_t event[14]; int pos = 0; event[pos++] = HCI_EVENT_A2DP_META; event[pos++] = sizeof(event) - 2; event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; little_endian_store_16(event, pos, connection->avdtp_cid); pos += 2; reverse_bd_addr(connection->remote_addr, &event[pos]); pos += 6; event[pos++] = 0; event[pos++] = 0; event[pos++] = status; a2dp_emit_role(role, event, sizeof(event)); } static a2dp_config_process_t * a2dp_config_process_for_role(avdtp_role_t role, avdtp_connection_t *connection){ return (role == AVDTP_ROLE_SOURCE) ? &connection->a2dp_source_config_process : &connection->a2dp_sink_config_process; } static void a2dp_config_process_timer_handler(btstack_timer_source_t * timer){ uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); btstack_run_loop_set_timer_context(&a2dp_config_process_set_config_timer, NULL); a2dp_config_process_set_config_timer_active = false; log_info("Config timer fired, avdtp_cid 0x%02x", avdtp_cid); if (connection == NULL) { a2dp_config_process_discover_seps_with_next_waiting_connection(); return; } a2dp_config_process_t * config_process = a2dp_config_process_for_role(a2dp_config_process_role, connection); if (config_process->stream_endpoint_configured) { a2dp_config_process_discover_seps_with_next_waiting_connection(); return; } avdtp_discover_stream_endpoints(avdtp_cid); } static void a2dp_config_process_timer_start(uint16_t avdtp_cid){ log_info("Config timer start for cid 0%02x", avdtp_cid); a2dp_config_process_set_config_timer_active = true; btstack_run_loop_remove_timer(&a2dp_config_process_set_config_timer); btstack_run_loop_set_timer_handler(&a2dp_config_process_set_config_timer, a2dp_config_process_timer_handler); btstack_run_loop_set_timer(&a2dp_config_process_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); btstack_run_loop_set_timer_context(&a2dp_config_process_set_config_timer, (void *)(uintptr_t)avdtp_cid); btstack_run_loop_add_timer(&a2dp_config_process_set_config_timer); } static void a2dp_config_process_timer_restart(void){ log_info("Config timer restart"); btstack_run_loop_remove_timer(&a2dp_config_process_set_config_timer); btstack_run_loop_set_timer(&a2dp_config_process_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); btstack_run_loop_add_timer(&a2dp_config_process_set_config_timer); } static void a2dp_config_process_timer_stop(void){ if (a2dp_config_process_set_config_timer_active == false) return; log_info("Config timer stop"); btstack_run_loop_remove_timer(&a2dp_config_process_set_config_timer); btstack_run_loop_set_timer_context(&a2dp_config_process_set_config_timer, NULL); a2dp_config_process_set_config_timer_active = false; } // Discover seps, both incoming and outgoing static void a2dp_config_process_start_discovering_seps(avdtp_role_t role, avdtp_connection_t *connection) { a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); config_process->state = A2DP_DISCOVER_SEPS; config_process->discover_seps = false; a2dp_config_process_role = role; a2dp_config_process_sep_discovery_index = 0; a2dp_config_process_sep_discovery_count = 0; memset(a2dp_config_process_sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); a2dp_config_process_sep_discovery_cid = connection->avdtp_cid; // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first if (config_process->outgoing_active){ log_info("discover seps"); avdtp_discover_stream_endpoints(connection->avdtp_cid); } else { log_info("wait a bit, then discover seps"); a2dp_config_process_timer_start(connection->avdtp_cid); } } static void a2dp_config_process_discover_seps_with_next_waiting_connection(void){ btstack_assert(a2dp_config_process_sep_discovery_cid == 0); btstack_linked_list_iterator_t it; btstack_linked_list_iterator_init(&it, avdtp_get_connections()); while (btstack_linked_list_iterator_has_next(&it)){ avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); if (next_connection->a2dp_source_config_process.discover_seps) { a2dp_config_process_start_discovering_seps(AVDTP_ROLE_SOURCE, next_connection); } if (next_connection->a2dp_sink_config_process.discover_seps) { a2dp_config_process_start_discovering_seps(AVDTP_ROLE_SINK, next_connection); } } } void a2dp_config_process_ready_for_sep_discovery(avdtp_role_t role, avdtp_connection_t *connection) { // start discover seps now if: // - outgoing active: signaling for outgoing connection // - outgoing not active: incoming connection and no sep discover ongoing // sep discovery active? if (a2dp_config_process_sep_discovery_cid == 0){ a2dp_config_process_start_discovering_seps(role, connection); } else { // post-pone sep discovery a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); config_process->discover_seps = true; } } static void a2dp_config_process_handle_media_configuration(avdtp_role_t role, const uint8_t *packet, uint8_t local_seid) { uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); avdtp_connection_t *connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); config_process->local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); // bail out if local seid invalid if (config_process->local_stream_endpoint == NULL) return; // stop timer if (a2dp_config_process_sep_discovery_cid == cid) { a2dp_config_process_timer_stop(); a2dp_config_process_sep_discovery_cid = 0; } config_process->stream_endpoint_configured = true; switch (config_process->state) { case A2DP_W4_SET_CONFIGURATION: // outgoing: discovery and config of remote sink sep successful, trigger stream open config_process->state = A2DP_W2_OPEN_STREAM_WITH_SEID; break; case A2DP_DISCOVER_SEPS: case A2DP_GET_CAPABILITIES: case A2DP_W2_GET_ALL_CAPABILITIES: case A2DP_DISCOVERY_DONE: case A2DP_W4_GET_CONFIGURATION: // incoming: wait for stream open config_process->state = A2DP_W4_OPEN_STREAM_WITH_SEID; break; default: // wait for configuration after sending reconfigure - keep state break; } } void a2dp_config_process_set_config(avdtp_role_t role, avdtp_connection_t *connection) { a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); uint8_t remote_seid = config_process->local_stream_endpoint->set_config_remote_seid; log_info("A2DP initiate set configuration locally and wait for response ... local seid 0x%02x, remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), remote_seid); config_process->state = A2DP_W4_SET_CONFIGURATION; avdtp_set_configuration(connection->avdtp_cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), remote_seid, config_process->local_stream_endpoint->remote_configuration_bitmap, config_process->local_stream_endpoint->remote_configuration); } static void a2dp_config_process_handle_media_capability(avdtp_role_t role, uint16_t cid, uint8_t a2dp_subevent_id, uint8_t *packet, uint16_t size) { avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); if (config_process->state != A2DP_GET_CAPABILITIES) return; a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, a2dp_subevent_id); } uint8_t a2dp_config_process_config_init(avdtp_role_t role, avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, avdtp_media_codec_type_t codec_type) { // check state a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); switch (config_process->state){ case A2DP_DISCOVERY_DONE: case A2DP_GET_CAPABILITIES: break; default: return ERROR_CODE_COMMAND_DISALLOWED; } // lookup local stream endpoint avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); if (stream_endpoint == NULL){ return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; } // lookup remote stream endpoint avdtp_sep_t * remote_sep = NULL; uint8_t i; for (i=0; i < a2dp_config_process_sep_discovery_count; i++){ if (a2dp_config_process_sep_discovery_seps[i].seid == remote_seid){ remote_sep = &a2dp_config_process_sep_discovery_seps[i]; } } if (remote_sep == NULL){ return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; } // set media configuration stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; // remote seid to use stream_endpoint->set_config_remote_seid = remote_seid; // enable delay reporting if supported if (remote_sep->registered_service_categories & (1<remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); } // suitable stream endpoint found, configure it config_process->local_stream_endpoint = stream_endpoint; config_process->have_config = true; #ifdef ENABLE_A2DP_EXPLICIT_CONFIG if (config_process->state == A2DP_DISCOVERY_DONE){ config_process->state = A2DP_SET_CONFIGURATION; } #endif return ERROR_CODE_SUCCESS; } void a2dp_config_process_avdtp_event_handler(avdtp_role_t role, uint8_t *packet, uint16_t size) { uint16_t cid; avdtp_connection_t * connection; a2dp_config_process_t * config_process; uint8_t signal_identifier; uint8_t status; uint8_t local_seid; uint8_t remote_seid; switch (hci_event_avdtp_meta_get_subevent_code(packet)){ case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); config_process = a2dp_config_process_for_role(role, connection); status = avdtp_subevent_signaling_connection_established_get_status(packet); if (status != ERROR_CODE_SUCCESS){ // notify about connection error only if we're initiator if (config_process->outgoing_active){ log_info("A2DP source signaling connection failed status 0x%02x", status); config_process->outgoing_active = false; a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); } break; } log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); config_process->state = A2DP_CONNECTED; // notify app a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); // Windows 10 as Source starts SEP discovery after 1500 ms, but only if it did not get a Discover command // If BTstack is configured for both roles, we need to avoid sending Discover command in Source Role for outgoing Sink connections // For this, we trigger SEP discovery if: // a) this is an outgoing connection // b) this connection wasn't caused by an outgoing connection of the other role if (role == AVDTP_ROLE_SOURCE){ if (connection->a2dp_source_config_process.outgoing_active || !connection->a2dp_sink_config_process.outgoing_active){ a2dp_config_process_ready_for_sep_discovery(AVDTP_ROLE_SOURCE, connection); } } else { if (connection->a2dp_sink_config_process.outgoing_active || !connection->a2dp_source_config_process.outgoing_active){ a2dp_config_process_ready_for_sep_discovery(AVDTP_ROLE_SINK, connection); } } break; case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); config_process = a2dp_config_process_for_role(role, connection); if (config_process->state == A2DP_DISCOVER_SEPS) { avdtp_sep_t sep; memset(&sep, 0, sizeof(avdtp_sep_t)); sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", a2dp_config_process_sep_discovery_count); avdtp_sep_type_t matching_type = (role == AVDTP_ROLE_SOURCE) ? AVDTP_SINK : AVDTP_SOURCE; if ((sep.type == matching_type) && (sep.in_use == false)) { a2dp_config_process_sep_discovery_seps[a2dp_config_process_sep_discovery_count++] = sep; } } break; case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); config_process = a2dp_config_process_for_role(role, connection); if (config_process->state != A2DP_DISCOVER_SEPS) break; if (a2dp_config_process_sep_discovery_count > 0){ config_process->state = A2DP_GET_CAPABILITIES; a2dp_config_process_sep_discovery_index = 0; config_process->have_config = false; } else { if (config_process->outgoing_active){ config_process->outgoing_active = false; connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); a2dp_emit_streaming_connection_failed_for_role(role, connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); } // continue config_process->state = A2DP_CONNECTED; a2dp_config_process_sep_discovery_cid = 0; a2dp_config_process_discover_seps_with_next_waiting_connection(); } break; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); config_process = a2dp_config_process_for_role(role, connection); if (config_process->state != A2DP_GET_CAPABILITIES) break; // forward codec capability a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); #ifndef ENABLE_A2DP_EXPLICIT_CONFIG // select SEP if none configured yet if (config_process->have_config == false){ // find SBC stream endpoint avdtp_sep_type_t required_sep_type = (role == AVDTP_ROLE_SOURCE) ? AVDTP_SOURCE : AVDTP_SINK; avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec_and_type(AVDTP_CODEC_SBC, required_sep_type); if (stream_endpoint != NULL){ // choose SBC config params avdtp_configuration_sbc_t configuration; configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); // and pre-select this endpoint local_seid = avdtp_stream_endpoint_seid(stream_endpoint); remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); a2dp_config_process_set_sbc(role, cid, local_seid, remote_seid, &configuration); } } #endif break; // forward codec capability case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); a2dp_config_process_handle_media_capability(role, cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY, packet, size); break; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); a2dp_config_process_handle_media_capability(role, cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY, packet, size); break; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); a2dp_config_process_handle_media_capability(role, cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY, packet, size); break; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); a2dp_config_process_handle_media_capability(role, cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY, packet, size); break; // not forwarded case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: break; case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); config_process = a2dp_config_process_for_role(role, connection); log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, config_process->state); if (config_process->state != A2DP_GET_CAPABILITIES) break; // store delay reporting capability a2dp_config_process_sep_discovery_seps[a2dp_config_process_sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); break; case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); config_process = a2dp_config_process_for_role(role, connection); if (config_process->state != A2DP_GET_CAPABILITIES) break; // forward capabilities done for endpoint a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); // endpoint was not suitable, check next one if possible a2dp_config_process_sep_discovery_index++; if (a2dp_config_process_sep_discovery_index >= a2dp_config_process_sep_discovery_count){ // emit 'all capabilities for all seps reported' uint8_t event[6]; uint8_t pos = 0; event[pos++] = HCI_EVENT_A2DP_META; event[pos++] = sizeof(event) - 2; event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; little_endian_store_16(event, pos, cid); a2dp_emit_role(role, event, sizeof(event)); // do we have a valid config? if (config_process->have_config){ config_process->state = A2DP_SET_CONFIGURATION; config_process->have_config = false; break; } #ifdef ENABLE_A2DP_EXPLICIT_CONFIG config_process->state = A2DP_DISCOVERY_DONE; // TODO call a2dp_discover_seps_with_next_waiting_connection? break; #endif // we didn't find a suitable SBC stream endpoint, sorry. if (config_process->outgoing_active){ config_process->outgoing_active = false; connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); a2dp_emit_streaming_connection_failed_for_role(role, connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); } config_process->state = A2DP_CONNECTED; a2dp_config_process_sep_discovery_cid = 0; a2dp_config_process_discover_seps_with_next_waiting_connection(); } break; // forward codec configuration case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); a2dp_config_process_handle_media_configuration(role, packet, local_seid); a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); break; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); a2dp_config_process_handle_media_configuration(role, packet, local_seid); a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); break; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); a2dp_config_process_handle_media_configuration(role, packet, local_seid); a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); break; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); a2dp_config_process_handle_media_configuration(role, packet, local_seid); a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); break; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); a2dp_config_process_handle_media_configuration(role, packet, local_seid); a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); break; case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); config_process = a2dp_config_process_for_role(role, connection); if (config_process->state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; config_process->outgoing_active = false; status = avdtp_subevent_streaming_connection_established_get_status(packet); if (status != ERROR_CODE_SUCCESS){ log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); break; } log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, avdtp_subevent_streaming_connection_established_get_local_seid(packet), avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); config_process->state = A2DP_STREAMING_OPENED; a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); break; case AVDTP_SUBEVENT_SIGNALING_ACCEPT: cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); config_process = a2dp_config_process_for_role(role, connection); // restart set config timer while remote is active for current cid if (a2dp_config_process_set_config_timer_active && (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && (cid == a2dp_config_process_sep_discovery_cid)){ a2dp_config_process_timer_restart(); break; } signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), config_process->state, cid); switch (config_process->state){ case A2DP_GET_CAPABILITIES: remote_seid = a2dp_config_process_sep_discovery_seps[a2dp_config_process_sep_discovery_index].seid; log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); avdtp_get_all_capabilities(cid, remote_seid, role); return; case A2DP_SET_CONFIGURATION: a2dp_config_process_set_config(role, connection); return; case A2DP_W2_OPEN_STREAM_WITH_SEID: log_info("A2DP open stream ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), config_process->local_stream_endpoint->remote_sep.seid); config_process->state = A2DP_W4_OPEN_STREAM_WITH_SEID; avdtp_open_stream(cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), config_process->local_stream_endpoint->remote_sep.seid); break; case A2DP_W2_RECONFIGURE_WITH_SEID: log_info("A2DP reconfigured ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), config_process->local_stream_endpoint->remote_sep.seid); a2dp_emit_stream_reconfigured_role(role, cid, avdtp_stream_endpoint_seid( config_process->local_stream_endpoint), ERROR_CODE_SUCCESS); config_process->state = A2DP_STREAMING_OPENED; break; case A2DP_STREAMING_OPENED: switch (signal_identifier){ case AVDTP_SI_START: a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); break; case AVDTP_SI_SUSPEND: a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); break; case AVDTP_SI_ABORT: case AVDTP_SI_CLOSE: a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); break; #ifdef ENABLE_AVDTP_ACCEPTOR_EXPLICIT_START_STREAM_CONFIRMATION case AVDTP_SI_ACCEPT_START: a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), A2DP_SUBEVENT_START_STREAM_REQUESTED); break; #endif default: break; } break; default: break; } break; case AVDTP_SUBEVENT_SIGNALING_REJECT: cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); config_process = a2dp_config_process_for_role(role, connection); if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; switch (config_process->state) { case A2DP_W2_RECONFIGURE_WITH_SEID: log_info("A2DP reconfigure failed ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), config_process->local_stream_endpoint->remote_sep.seid); a2dp_emit_stream_reconfigured_role(role, cid, avdtp_stream_endpoint_seid( config_process->local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); config_process->state = A2DP_STREAMING_OPENED; break; default: config_process->state = A2DP_CONNECTED; break; } a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); break; case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); config_process = a2dp_config_process_for_role(role, connection); if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; config_process->state = A2DP_CONNECTED; a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); break; case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); config_process = a2dp_config_process_for_role(role, connection); config_process->state = A2DP_CONFIGURED; a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); break; case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); connection = avdtp_get_connection_for_avdtp_cid(cid); btstack_assert(connection != NULL); config_process = a2dp_config_process_for_role(role, connection); // connect/release are passed on to app if (a2dp_config_process_sep_discovery_cid == cid){ a2dp_config_process_timer_stop(); config_process->stream_endpoint_configured = false; config_process->local_stream_endpoint = NULL; config_process->state = A2DP_IDLE; a2dp_config_process_sep_discovery_cid = 0; } a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); break; default: break; } } uint8_t a2dp_config_process_set_sbc(avdtp_role_t role, uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_sbc_t * configuration){ avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); if (connection == NULL){ return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; } a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_SBC); if (status != 0) { return status; } // set config in reserved buffer config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) config_process->local_stream_endpoint->media_codec_info; config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; avdtp_config_sbc_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); #ifdef ENABLE_A2DP_EXPLICIT_CONFIG a2dp_config_process_set_config(role, connection); #endif return ERROR_CODE_SUCCESS; } uint8_t a2dp_config_process_set_mpeg_audio(avdtp_role_t role, uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_mpeg_audio_t * configuration){ avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); if (connection == NULL){ return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; } a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); if (status != 0) { return status; } // set config in reserved buffer config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)config_process->local_stream_endpoint->media_codec_info; config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; avdtp_config_mpeg_audio_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); #ifdef ENABLE_A2DP_EXPLICIT_CONFIG a2dp_config_process_set_config(role, connection); #endif return ERROR_CODE_SUCCESS; } uint8_t a2dp_config_process_set_mpeg_aac(avdtp_role_t role, uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_mpeg_aac_t * configuration){ avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); if (connection == NULL){ return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; } a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); if (status != 0) { return status; } config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) config_process->local_stream_endpoint->media_codec_info; config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; avdtp_config_mpeg_aac_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); #ifdef ENABLE_A2DP_EXPLICIT_CONFIG a2dp_config_process_set_config(role, connection); #endif return ERROR_CODE_SUCCESS; } uint8_t a2dp_config_process_set_atrac(avdtp_role_t role, uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_atrac_t * configuration){ avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); if (connection == NULL){ return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; } a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); if (status != 0) { return status; } config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) config_process->local_stream_endpoint->media_codec_info; config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; avdtp_config_atrac_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); #ifdef ENABLE_A2DP_EXPLICIT_CONFIG a2dp_config_process_set_config(role, connection); #endif return ERROR_CODE_SUCCESS; } uint8_t a2dp_config_process_set_other(avdtp_role_t role, uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const uint8_t * media_codec_information, uint8_t media_codec_information_len){ avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); if (connection == NULL){ return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; } a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); if (status != 0) { return status; } config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; #ifdef ENABLE_A2DP_EXPLICIT_CONFIG a2dp_config_process_set_config(role, connection); #endif return status; }