diff --git a/src/classic/a2dp.c b/src/classic/a2dp.c index a9556addf..02b9bd3d9 100644 --- a/src/classic/a2dp.c +++ b/src/classic/a2dp.c @@ -54,13 +54,27 @@ #include "classic/avdtp_util.h" #include "btstack_debug.h" +#define AVDTP_MAX_SEP_NUM 10 +#define A2DP_SET_CONFIG_DELAY_MS 200 + +static void a2dp_discover_seps_with_next_waiting_connection(void); + // higher layer callbacks static btstack_packet_handler_t a2dp_source_callback; +// config process - singletons using sep_discovery_cid is used as mutex +static uint16_t a2dp_source_sep_discovery_cid; +static uint16_t a2dp_source_sep_discovery_count; +static uint16_t a2dp_source_sep_discovery_index; +static avdtp_sep_t a2dp_source_sep_discovery_seps[AVDTP_MAX_SEP_NUM]; +static btstack_timer_source_t a2dp_source_set_config_timer; +static bool a2dp_source_set_config_timer_active; + void a2dp_init(void) { } void a2dp_deinit(void){ + a2dp_source_sep_discovery_cid = 0; } @@ -181,3 +195,603 @@ void a2dp_emit_source_stream_reconfigured(uint16_t cid, uint8_t local_seid, uint a2dp_emit_source(event, sizeof(event)); } +static void a2dp_source_set_config_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_source_set_config_timer, NULL); + a2dp_source_set_config_timer_active = false; + + log_info("Set Config timer fired, avdtp_cid 0x%02x", avdtp_cid); + + if (connection == NULL) { + a2dp_discover_seps_with_next_waiting_connection(); + return; + } + + if (connection->a2dp_source_config_process.stream_endpoint_configured) return; + avdtp_source_discover_stream_endpoints(avdtp_cid); +} + +static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ + log_info("Set Config timer start for cid 0%02x", avdtp_cid); + a2dp_source_set_config_timer_active = true; + btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); + btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); + btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); + btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); + btstack_run_loop_add_timer(&a2dp_source_set_config_timer); +} + +static void a2dp_source_set_config_timer_restart(void){ + log_info("Set Config timer restart"); + btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); + btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); + btstack_run_loop_add_timer(&a2dp_source_set_config_timer); +} + +static void a2dp_source_set_config_timer_stop(void){ + if (a2dp_source_set_config_timer_active == false) return; + log_info("Set Config timer stop"); + btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); + btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); + a2dp_source_set_config_timer_active = false; +} + +// Discover seps, both incoming and outgoing +static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ + connection->a2dp_source_config_process.state = A2DP_DISCOVER_SEPS; + connection->a2dp_source_config_process.discover_seps = false; + + a2dp_source_sep_discovery_index = 0; + a2dp_source_sep_discovery_count = 0; + memset(a2dp_source_sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); + a2dp_source_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 (connection->a2dp_source_config_process.outgoing_active){ + log_info("discover seps"); + avdtp_source_discover_stream_endpoints(connection->avdtp_cid); + } else { + log_info("wait a bit, then discover seps"); + a2dp_source_set_config_timer_start(connection->avdtp_cid); + } +} + +static void a2dp_discover_seps_with_next_waiting_connection(void){ + btstack_assert(a2dp_source_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) continue; + a2dp_start_discovering_seps(next_connection); + } +} + +void a2dp_source_ready_for_sep_discovery(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_source_sep_discovery_cid == 0){ + a2dp_start_discovering_seps(connection); + } else { + // post-pone sep discovery + connection->a2dp_source_config_process.discover_seps = true; + } +} + +static void a2dp_handle_received_configuration(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 *avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); + btstack_assert(avdtp_connection != NULL); + avdtp_connection->a2dp_source_config_process.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); + // bail out if local seid invalid + if (!avdtp_connection->a2dp_source_config_process.local_stream_endpoint) return; + + // stop timer + if (a2dp_source_sep_discovery_cid == cid) { + a2dp_source_set_config_timer_stop(); + a2dp_source_sep_discovery_cid = 0; + } + + avdtp_connection->a2dp_source_config_process.stream_endpoint_configured = true; + + switch (avdtp_connection->a2dp_source_config_process.state) { + case A2DP_W4_SET_CONFIGURATION: + // outgoing: discovery and config of remote sink sep successful, trigger stream open + avdtp_connection->a2dp_source_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 + avdtp_connection->a2dp_source_config_process.state = A2DP_W4_OPEN_STREAM_WITH_SEID; + break; + default: + // wait for configuration after sending reconfigure - keep state + break; + } +} + +static void a2dp_source_set_config(avdtp_connection_t * connection){ + uint8_t remote_seid = connection->a2dp_source_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); + connection->a2dp_source_config_process.state = A2DP_W4_SET_CONFIGURATION; + avdtp_source_set_configuration(connection->avdtp_cid, + avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), + remote_seid, + connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration_bitmap, + connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration); +} + +static void a2dp_source_handle_media_capability(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); + if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) return; + a2dp_replace_subevent_id_and_emit_source(packet, size, a2dp_subevent_id); +} + +uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, + avdtp_media_codec_type_t codec_type) { + + // check state + switch (connection->a2dp_source_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_source_sep_discovery_count; i++){ + if (a2dp_source_sep_discovery_seps[i].seid == remote_seid){ + remote_sep = &a2dp_source_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 Sink stream endpoint found, configure it + connection->a2dp_source_config_process.local_stream_endpoint = stream_endpoint; + connection->a2dp_source_config_process.have_config = true; + +#ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG + // continue outgoing configuration + if (connection->a2dp_source_state == A2DP_DISCOVERY_DONE){ + connection->a2dp_source_state = A2DP_SET_CONFIGURATION; + } +#endif + + return ERROR_CODE_SUCCESS; +} +void a2dp_source_config_process_avdtp_event_handler(uint8_t *packet, uint16_t size) { + uint16_t cid; + avdtp_connection_t * connection; + 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); + + status = avdtp_subevent_signaling_connection_established_get_status(packet); + if (status != ERROR_CODE_SUCCESS){ + // notify about connection error only if we're initiator + if (connection->a2dp_source_config_process.outgoing_active){ + log_info("A2DP source signaling connection failed status 0x%02x", status); + connection->a2dp_source_config_process.outgoing_active = false; + a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); + } + break; + } + log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); + connection->a2dp_source_config_process.state = A2DP_CONNECTED; + + // notify app + a2dp_replace_subevent_id_and_emit_source(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 SDP query only if: + // a) this is an outgoing source connection + // b) this connection wasn't caused by an outgoing sink request + if (connection->a2dp_source_config_process.outgoing_active || !connection->a2dp_sink_config_process.outgoing_active){ + a2dp_source_ready_for_sep_discovery(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); + + if (connection->a2dp_source_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_source_sep_discovery_count); + if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { + a2dp_source_sep_discovery_seps[a2dp_source_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); + + if (connection->a2dp_source_config_process.state != A2DP_DISCOVER_SEPS) break; + + if (a2dp_source_sep_discovery_count > 0){ + connection->a2dp_source_config_process.state = A2DP_GET_CAPABILITIES; + a2dp_source_sep_discovery_index = 0; + connection->a2dp_source_config_process.have_config = false; + } else { + if (connection->a2dp_source_config_process.outgoing_active){ + connection->a2dp_source_config_process.outgoing_active = false; + connection = avdtp_get_connection_for_avdtp_cid(cid); + btstack_assert(connection != NULL); + a2dp_emit_source_streaming_connection_failed(connection, + ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); + } + + // continue + connection->a2dp_source_config_process.state = A2DP_CONNECTED; + a2dp_source_sep_discovery_cid = 0; + a2dp_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); + + if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) break; + + // forward codec capability + a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); + +#ifndef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG + // select SEP if none configured yet + if (connection->a2dp_source_config_process.have_config == false){ + // find SBC stream endpoint + avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); + 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_source_set_config_sbc(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_source_handle_media_capability(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_source_handle_media_capability(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_source_handle_media_capability(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_source_handle_media_capability(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); + log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_config_process.state); + + if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) break; + + // store delay reporting capability + a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; + + a2dp_replace_subevent_id_and_emit_source(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); + + if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) break; + + // forward capabilities done for endpoint + a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); + + // endpoint was not suitable, check next one + a2dp_source_sep_discovery_index++; + if (a2dp_source_sep_discovery_index >= a2dp_source_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_source(event, sizeof(event)); + + // do we have a valid config? + if (connection->a2dp_source_config_process.have_config){ + connection->a2dp_source_config_process.state = A2DP_SET_CONFIGURATION; + connection->a2dp_source_config_process.have_config = false; + break; + } + +#ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG + connection->a2dp_source_state = A2DP_DISCOVERY_DONE; + // TODO call a2dp_discover_seps_with_next_waiting_connection? + break; +#else + // we didn't find a suitable SBC stream endpoint, sorry. + if (connection->a2dp_source_config_process.outgoing_active){ + connection->a2dp_source_config_process.outgoing_active = false; + connection = avdtp_get_connection_for_avdtp_cid(cid); + btstack_assert(connection != NULL); + a2dp_emit_source_streaming_connection_failed(connection, + ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); + } + connection->a2dp_source_config_process.state = A2DP_CONNECTED; + a2dp_source_sep_discovery_cid = 0; + a2dp_discover_seps_with_next_waiting_connection(); +#endif + } + 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_handle_received_configuration(packet, local_seid); + a2dp_replace_subevent_id_and_emit_source(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_handle_received_configuration(packet, local_seid); + a2dp_replace_subevent_id_and_emit_source(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_handle_received_configuration(packet, local_seid); + a2dp_replace_subevent_id_and_emit_source(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_handle_received_configuration(packet, local_seid); + a2dp_replace_subevent_id_and_emit_source(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_handle_received_configuration(packet, local_seid); + a2dp_replace_subevent_id_and_emit_source(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); + + if (connection->a2dp_source_config_process.state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; + + connection->a2dp_source_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_source(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)); + connection->a2dp_source_config_process.state = A2DP_STREAMING_OPENED; + a2dp_replace_subevent_id_and_emit_source(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); + + // restart set config timer while remote is active for current cid + if (a2dp_source_set_config_timer_active && + (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && + (cid == a2dp_source_sep_discovery_cid)){ + + a2dp_source_set_config_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), connection->a2dp_source_config_process.state, cid); + + switch (connection->a2dp_source_config_process.state){ + case A2DP_GET_CAPABILITIES: + remote_seid = a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].seid; + log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); + avdtp_source_get_all_capabilities(cid, remote_seid); + return; + + case A2DP_SET_CONFIGURATION: + a2dp_source_set_config(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), + connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); + connection->a2dp_source_config_process.state = A2DP_W4_OPEN_STREAM_WITH_SEID; + avdtp_source_open_stream(cid, + avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), + connection->a2dp_source_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(connection->a2dp_source_config_process.local_stream_endpoint), + connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); + a2dp_emit_source_stream_reconfigured(cid, avdtp_stream_endpoint_seid( + connection->a2dp_source_config_process.local_stream_endpoint), ERROR_CODE_SUCCESS); + connection->a2dp_source_config_process.state = A2DP_STREAMING_OPENED; + break; + + case A2DP_STREAMING_OPENED: + switch (signal_identifier){ + case AVDTP_SI_START: + a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), + A2DP_SUBEVENT_STREAM_STARTED); + break; + case AVDTP_SI_SUSPEND: + a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), + A2DP_SUBEVENT_STREAM_SUSPENDED); + break; + case AVDTP_SI_ABORT: + case AVDTP_SI_CLOSE: + a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), + A2DP_SUBEVENT_STREAM_STOPPED); + break; + 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); + + if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; + + switch (connection->a2dp_source_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(connection->a2dp_source_config_process.local_stream_endpoint), + connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); + a2dp_emit_source_stream_reconfigured(cid, avdtp_stream_endpoint_seid( + connection->a2dp_source_config_process.local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); + connection->a2dp_source_config_process.state = A2DP_STREAMING_OPENED; + break; + default: + connection->a2dp_source_config_process.state = A2DP_CONNECTED; + break; + } + + a2dp_replace_subevent_id_and_emit_source(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); + + if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; + + connection->a2dp_source_config_process.state = A2DP_CONNECTED; + a2dp_replace_subevent_id_and_emit_source(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); + + connection->a2dp_source_config_process.state = A2DP_CONFIGURED; + a2dp_replace_subevent_id_and_emit_source(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); + + // connect/release are passed on to app + if (a2dp_source_sep_discovery_cid == cid){ + a2dp_source_set_config_timer_stop(); + connection->a2dp_source_config_process.stream_endpoint_configured = false; + connection->a2dp_source_config_process.local_stream_endpoint = NULL; + + connection->a2dp_source_config_process.state = A2DP_IDLE; + a2dp_source_sep_discovery_cid = 0; + } + a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); + break; + + default: + break; + } +} diff --git a/src/classic/a2dp.h b/src/classic/a2dp.h index 9c1a04c80..24aedc8e5 100644 --- a/src/classic/a2dp.h +++ b/src/classic/a2dp.h @@ -72,6 +72,13 @@ void a2dp_emit_source_streaming_connection_failed(avdtp_connection_t *connection void a2dp_emit_source_stream_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status); +void a2dp_source_ready_for_sep_discovery(avdtp_connection_t * connection); + +uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, + avdtp_media_codec_type_t codec_type); + +void a2dp_source_config_process_avdtp_event_handler(uint8_t *packet, uint16_t size); + #if defined __cplusplus } #endif diff --git a/src/classic/a2dp_source.c b/src/classic/a2dp_source.c index 670a60851..80cf6cf42 100644 --- a/src/classic/a2dp_source.c +++ b/src/classic/a2dp_source.c @@ -65,25 +65,11 @@ #include "l2cap.h" #include "a2dp.h" -#define AVDTP_MAX_SEP_NUM 10 -#define A2DP_SET_CONFIG_DELAY_MS 200 - static const char * a2dp_source_default_service_name = "BTstack A2DP Source Service"; static const char * a2dp_default_source_service_provider_name = "BTstack A2DP Source Service Provider"; static uint8_t (*a2dp_source_media_config_validator)(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size); -// config process - singletons using sep_discovery_cid is used as mutex -static uint16_t a2dp_source_sep_discovery_cid; -static uint16_t a2dp_source_sep_discovery_count; -static uint16_t a2dp_source_sep_discovery_index; -static avdtp_sep_t a2dp_source_sep_discovery_seps[AVDTP_MAX_SEP_NUM]; -static btstack_timer_source_t a2dp_source_set_config_timer; -static bool a2dp_source_set_config_timer_active; - -static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); -static void a2dp_discover_seps_with_next_waiting_connection(void); - void a2dp_source_create_sdp_record(uint8_t * service, uint32_t service_record_handle, uint16_t supported_features, const char * service_name, const char * service_provider_name){ if (service_provider_name == NULL){ service_provider_name = a2dp_default_source_service_provider_name; @@ -95,553 +81,6 @@ void a2dp_source_create_sdp_record(uint8_t * service, uint32_t service_record_ha supported_features, service_name, service_provider_name); } -static void a2dp_source_set_config_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_source_set_config_timer, NULL); - a2dp_source_set_config_timer_active = false; - - log_info("Set Config timer fired, avdtp_cid 0x%02x", avdtp_cid); - - if (connection == NULL) { - a2dp_discover_seps_with_next_waiting_connection(); - return; - } - - if (connection->a2dp_source_config_process.stream_endpoint_configured) return; - avdtp_source_discover_stream_endpoints(avdtp_cid); -} - -static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ - log_info("Set Config timer start for cid 0%02x", avdtp_cid); - a2dp_source_set_config_timer_active = true; - btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); - btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); - btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); - btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); - btstack_run_loop_add_timer(&a2dp_source_set_config_timer); -} - -static void a2dp_source_set_config_timer_restart(void){ - log_info("Set Config timer restart"); - btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); - btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); - btstack_run_loop_add_timer(&a2dp_source_set_config_timer); -} - -static void a2dp_source_set_config_timer_stop(void){ - if (a2dp_source_set_config_timer_active == false) return; - log_info("Set Config timer stop"); - btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); - btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); - a2dp_source_set_config_timer_active = false; -} - -// Discover seps, both incoming and outgoing -static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ - connection->a2dp_source_config_process.state = A2DP_DISCOVER_SEPS; - connection->a2dp_source_config_process.discover_seps = false; - - a2dp_source_sep_discovery_index = 0; - a2dp_source_sep_discovery_count = 0; - memset(a2dp_source_sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); - a2dp_source_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 (connection->a2dp_source_config_process.outgoing_active){ - log_info("discover seps"); - avdtp_source_discover_stream_endpoints(connection->avdtp_cid); - } else { - log_info("wait a bit, then discover seps"); - a2dp_source_set_config_timer_start(connection->avdtp_cid); - } -} - -static void a2dp_discover_seps_with_next_waiting_connection(void){ - btstack_assert(a2dp_source_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) continue; - a2dp_start_discovering_seps(next_connection); - } -} - -static void a2dp_source_ready_for_sep_discovery(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_source_sep_discovery_cid == 0){ - a2dp_start_discovering_seps(connection); - } else { - // post-pone sep discovery - connection->a2dp_source_config_process.discover_seps = true; - } -} - -static void a2dp_handle_received_configuration(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 *avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); - btstack_assert(avdtp_connection != NULL); - avdtp_connection->a2dp_source_config_process.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); - // bail out if local seid invalid - if (!avdtp_connection->a2dp_source_config_process.local_stream_endpoint) return; - - // stop timer - if (a2dp_source_sep_discovery_cid == cid) { - a2dp_source_set_config_timer_stop(); - a2dp_source_sep_discovery_cid = 0; - } - - avdtp_connection->a2dp_source_config_process.stream_endpoint_configured = true; - - switch (avdtp_connection->a2dp_source_config_process.state) { - case A2DP_W4_SET_CONFIGURATION: - // outgoing: discovery and config of remote sink sep successful, trigger stream open - avdtp_connection->a2dp_source_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 - avdtp_connection->a2dp_source_config_process.state = A2DP_W4_OPEN_STREAM_WITH_SEID; - break; - default: - // wait for configuration after sending reconfigure - keep state - break; - } -} - -static void a2dp_source_set_config(avdtp_connection_t * connection){ - uint8_t remote_seid = connection->a2dp_source_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); - connection->a2dp_source_config_process.state = A2DP_W4_SET_CONFIGURATION; - avdtp_source_set_configuration(connection->avdtp_cid, - avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), - remote_seid, - connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration_bitmap, - connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration); -} - -static void a2dp_source_handle_media_capability(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); - if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) return; - a2dp_replace_subevent_id_and_emit_source(packet, size, a2dp_subevent_id); -} - -static void a2dp_source_config_process_avdtp_event_handler(uint8_t *packet, uint16_t size) { - uint16_t cid; - avdtp_connection_t * connection; - 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); - - status = avdtp_subevent_signaling_connection_established_get_status(packet); - if (status != ERROR_CODE_SUCCESS){ - // notify about connection error only if we're initiator - if (connection->a2dp_source_config_process.outgoing_active){ - log_info("A2DP source signaling connection failed status 0x%02x", status); - connection->a2dp_source_config_process.outgoing_active = false; - a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); - } - break; - } - log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); - connection->a2dp_source_config_process.state = A2DP_CONNECTED; - - // notify app - a2dp_replace_subevent_id_and_emit_source(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 SDP query only if: - // a) this is an outgoing source connection - // b) this connection wasn't caused by an outgoing sink request - if (connection->a2dp_source_config_process.outgoing_active || !connection->a2dp_sink_config_process.outgoing_active){ - a2dp_source_ready_for_sep_discovery(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); - - if (connection->a2dp_source_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_source_sep_discovery_count); - if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { - a2dp_source_sep_discovery_seps[a2dp_source_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); - - if (connection->a2dp_source_config_process.state != A2DP_DISCOVER_SEPS) break; - - if (a2dp_source_sep_discovery_count > 0){ - connection->a2dp_source_config_process.state = A2DP_GET_CAPABILITIES; - a2dp_source_sep_discovery_index = 0; - connection->a2dp_source_config_process.have_config = false; - } else { - if (connection->a2dp_source_config_process.outgoing_active){ - connection->a2dp_source_config_process.outgoing_active = false; - connection = avdtp_get_connection_for_avdtp_cid(cid); - btstack_assert(connection != NULL); - a2dp_emit_source_streaming_connection_failed(connection, - ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); - } - - // continue - connection->a2dp_source_config_process.state = A2DP_CONNECTED; - a2dp_source_sep_discovery_cid = 0; - a2dp_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); - - if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) break; - - // forward codec capability - a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); - -#ifndef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG - // select SEP if none configured yet - if (connection->a2dp_source_config_process.have_config == false){ - // find SBC stream endpoint - avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); - 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_source_set_config_sbc(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_source_handle_media_capability(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_source_handle_media_capability(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_source_handle_media_capability(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_source_handle_media_capability(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); - log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_config_process.state); - - if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) break; - - // store delay reporting capability - a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; - - a2dp_replace_subevent_id_and_emit_source(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); - - if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) break; - - // forward capabilities done for endpoint - a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); - - // endpoint was not suitable, check next one - a2dp_source_sep_discovery_index++; - if (a2dp_source_sep_discovery_index >= a2dp_source_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_source(event, sizeof(event)); - - // do we have a valid config? - if (connection->a2dp_source_config_process.have_config){ - connection->a2dp_source_config_process.state = A2DP_SET_CONFIGURATION; - connection->a2dp_source_config_process.have_config = false; - break; - } - -#ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG - connection->a2dp_source_state = A2DP_DISCOVERY_DONE; - // TODO call a2dp_discover_seps_with_next_waiting_connection? - break; -#else - // we didn't find a suitable SBC stream endpoint, sorry. - if (connection->a2dp_source_config_process.outgoing_active){ - connection->a2dp_source_config_process.outgoing_active = false; - connection = avdtp_get_connection_for_avdtp_cid(cid); - btstack_assert(connection != NULL); - a2dp_emit_source_streaming_connection_failed(connection, - ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); - } - connection->a2dp_source_config_process.state = A2DP_CONNECTED; - a2dp_source_sep_discovery_cid = 0; - a2dp_discover_seps_with_next_waiting_connection(); -#endif - } - 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_handle_received_configuration(packet, local_seid); - a2dp_replace_subevent_id_and_emit_source(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_handle_received_configuration(packet, local_seid); - a2dp_replace_subevent_id_and_emit_source(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_handle_received_configuration(packet, local_seid); - a2dp_replace_subevent_id_and_emit_source(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_handle_received_configuration(packet, local_seid); - a2dp_replace_subevent_id_and_emit_source(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_handle_received_configuration(packet, local_seid); - a2dp_replace_subevent_id_and_emit_source(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); - - if (connection->a2dp_source_config_process.state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; - - connection->a2dp_source_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_source(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)); - connection->a2dp_source_config_process.state = A2DP_STREAMING_OPENED; - a2dp_replace_subevent_id_and_emit_source(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); - - // restart set config timer while remote is active for current cid - if (a2dp_source_set_config_timer_active && - (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && - (cid == a2dp_source_sep_discovery_cid)){ - - a2dp_source_set_config_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), connection->a2dp_source_config_process.state, cid); - - switch (connection->a2dp_source_config_process.state){ - case A2DP_GET_CAPABILITIES: - remote_seid = a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].seid; - log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); - avdtp_source_get_all_capabilities(cid, remote_seid); - return; - - case A2DP_SET_CONFIGURATION: - a2dp_source_set_config(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), - connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); - connection->a2dp_source_config_process.state = A2DP_W4_OPEN_STREAM_WITH_SEID; - avdtp_source_open_stream(cid, - avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), - connection->a2dp_source_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(connection->a2dp_source_config_process.local_stream_endpoint), - connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); - a2dp_emit_source_stream_reconfigured(cid, avdtp_stream_endpoint_seid( - connection->a2dp_source_config_process.local_stream_endpoint), ERROR_CODE_SUCCESS); - connection->a2dp_source_config_process.state = A2DP_STREAMING_OPENED; - break; - - case A2DP_STREAMING_OPENED: - switch (signal_identifier){ - case AVDTP_SI_START: - a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), - A2DP_SUBEVENT_STREAM_STARTED); - break; - case AVDTP_SI_SUSPEND: - a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), - A2DP_SUBEVENT_STREAM_SUSPENDED); - break; - case AVDTP_SI_ABORT: - case AVDTP_SI_CLOSE: - a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), - A2DP_SUBEVENT_STREAM_STOPPED); - break; - 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); - - if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; - - switch (connection->a2dp_source_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(connection->a2dp_source_config_process.local_stream_endpoint), - connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); - a2dp_emit_source_stream_reconfigured(cid, avdtp_stream_endpoint_seid( - connection->a2dp_source_config_process.local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); - connection->a2dp_source_config_process.state = A2DP_STREAMING_OPENED; - break; - default: - connection->a2dp_source_config_process.state = A2DP_CONNECTED; - break; - } - - a2dp_replace_subevent_id_and_emit_source(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); - - if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; - - connection->a2dp_source_config_process.state = A2DP_CONNECTED; - a2dp_replace_subevent_id_and_emit_source(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); - - connection->a2dp_source_config_process.state = A2DP_CONFIGURED; - a2dp_replace_subevent_id_and_emit_source(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); - - // connect/release are passed on to app - if (a2dp_source_sep_discovery_cid == cid){ - a2dp_source_set_config_timer_stop(); - connection->a2dp_source_config_process.stream_endpoint_configured = false; - connection->a2dp_source_config_process.local_stream_endpoint = NULL; - - connection->a2dp_source_config_process.state = A2DP_IDLE; - a2dp_source_sep_discovery_cid = 0; - } - a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); - break; - - default: - break; - } -} - static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ UNUSED(channel); UNUSED(size); @@ -681,7 +120,6 @@ void a2dp_source_deinit(void){ a2dp_deinit(); avdtp_source_deinit(); a2dp_source_media_config_validator = NULL; - a2dp_source_sep_discovery_cid = 0; } avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, @@ -753,7 +191,6 @@ uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ return avdtp_disconnect(avdtp_cid); } - uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ return avdtp_start_stream(avdtp_cid, local_seid); } @@ -782,60 +219,6 @@ uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_se return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); } -static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, - avdtp_media_codec_type_t codec_type) { - - // check state - switch (connection->a2dp_source_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_source_sep_discovery_count; i++){ - if (a2dp_source_sep_discovery_seps[i].seid == remote_seid){ - remote_sep = &a2dp_source_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 Sink stream endpoint found, configure it - connection->a2dp_source_config_process.local_stream_endpoint = stream_endpoint; - connection->a2dp_source_config_process.have_config = true; - -#ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG - // continue outgoing configuration - if (connection->a2dp_source_state == A2DP_DISCOVERY_DONE){ - connection->a2dp_source_state = A2DP_SET_CONFIGURATION; - } -#endif - - return ERROR_CODE_SUCCESS; -} uint8_t a2dp_source_set_config_sbc(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);