/* * Copyright (C) 2016 BlueKitchen GmbH * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the copyright holders nor the names of * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * 4. Any redistribution, use, or modification is done solely for * personal benefit and not for any commercial purpose or for * monetary gain. * * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Please inquire about commercial licensing options at * contact@bluekitchen-gmbh.com * */ #define BTSTACK_FILE__ "a2dp_source.c" #include #include #include "bluetooth_psm.h" #include "bluetooth_sdp.h" #include "btstack_debug.h" #include "btstack_event.h" #include "classic/a2dp_source.h" #include "classic/avdtp_source.h" #include "classic/avdtp_util.h" #include "classic/sdp_util.h" #include "l2cap.h" #define AVDTP_MAX_SEP_NUM 10 static const char * default_a2dp_source_service_name = "BTstack A2DP Source Service"; static const char * default_a2dp_source_service_provider_name = "BTstack A2DP Source Service Provider"; static avdtp_context_t a2dp_source_context; static a2dp_state_t app_state = A2DP_IDLE; static avdtp_stream_endpoint_context_t sc; static avdtp_sep_t remote_seps[AVDTP_MAX_SEP_NUM]; static int remote_seps_index = 0; static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 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){ 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, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); } 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); if (service_name){ de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); } else { de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); } // 0x0100 "Provider Name" de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); if (service_provider_name){ de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); } else { de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_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); } static void a2dp_streaming_emit_can_send_media_packet_now(btstack_packet_handler_t callback, uint16_t cid, uint8_t seid){ if (!callback) return; uint8_t event[8]; int pos = 0; event[pos++] = HCI_EVENT_A2DP_META; event[pos++] = sizeof(event) - 2; event[pos++] = A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW; little_endian_store_16(event, pos, cid); pos += 2; event[pos++] = seid; (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); } static inline void a2dp_signaling_emit_delay_report_capability(btstack_packet_handler_t callback, uint8_t * event, uint16_t event_size){ if (!callback) return; event[0] = HCI_EVENT_A2DP_META; event[2] = A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY; (*callback)(HCI_EVENT_PACKET, 0, event, event_size); } static inline void a2dp_signaling_emit_capabilities_done(btstack_packet_handler_t callback, uint8_t * event, uint16_t event_size){ if (!callback) return; event[0] = HCI_EVENT_A2DP_META; event[2] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE; (*callback)(HCI_EVENT_PACKET, 0, event, event_size); } static inline void a2dp_signaling_emit_delay_report(btstack_packet_handler_t callback, uint8_t * event, uint16_t event_size){ if (!callback) return; event[0] = HCI_EVENT_A2DP_META; event[2] = A2DP_SUBEVENT_SIGNALING_DELAY_REPORT; (*callback)(HCI_EVENT_PACKET, 0, event, event_size); } static inline void a2dp_signaling_emit_media_codec_sbc(btstack_packet_handler_t callback, uint8_t * event, uint16_t event_size){ if (!callback) return; if (event_size < 18) return; event[0] = HCI_EVENT_A2DP_META; event[2] = A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION; (*callback)(HCI_EVENT_PACKET, 0, event, event_size); } static inline void a2dp_signaling_emit_reject_cmd(btstack_packet_handler_t callback, uint8_t * event, uint16_t event_size){ if (!callback) return; if (event_size < 18) return; event[0] = HCI_EVENT_A2DP_META; event[2] = A2DP_SUBEVENT_COMMAND_REJECTED; (*callback)(HCI_EVENT_PACKET, 0, event, event_size); } static void a2dp_signaling_emit_connection_established(btstack_packet_handler_t callback, uint16_t cid, bd_addr_t addr, uint8_t status){ if (!callback) return; uint8_t event[12]; int pos = 0; event[pos++] = HCI_EVENT_A2DP_META; event[pos++] = sizeof(event) - 2; event[pos++] = A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED; little_endian_store_16(event, pos, cid); pos += 2; reverse_bd_addr(addr,&event[pos]); pos += 6; event[pos++] = status; (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); } static void a2dp_signaling_emit_control_command(btstack_packet_handler_t callback, uint16_t cid, uint8_t local_seid, uint8_t cmd){ if (!callback) return; uint8_t event[6]; int pos = 0; event[pos++] = HCI_EVENT_A2DP_META; event[pos++] = sizeof(event) - 2; event[pos++] = cmd; little_endian_store_16(event, pos, cid); pos += 2; event[pos++] = local_seid; (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); } static void a2dp_signaling_emit_reconfigured(btstack_packet_handler_t callback, uint16_t cid, uint8_t local_seid, uint8_t status){ if (!callback) return; 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; (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); } static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ UNUSED(channel); UNUSED(size); uint8_t signal_identifier; uint8_t status; uint8_t local_seid; uint8_t remote_seid; uint16_t cid; bd_addr_t address; if (packet_type != HCI_EVENT_PACKET) return; if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; switch (packet[2]){ case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED:{ avdtp_subevent_signaling_connection_established_get_bd_addr(packet, sc.remote_addr); cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); status = avdtp_subevent_signaling_connection_established_get_status(packet); if (status != 0){ log_info("AVDTP_SUBEVENT_SIGNALING_CONNECTION failed status %d ---", status); app_state = A2DP_IDLE; a2dp_signaling_emit_connection_established(a2dp_source_context.a2dp_callback, cid, sc.remote_addr, status); break; } log_info("A2DP_SUBEVENT_SIGNALING_CONNECTION established avdtp_cid 0x%02x ---", a2dp_source_context.avdtp_cid); sc.active_remote_sep = NULL; sc.active_remote_sep_index = 0; app_state = A2DP_W2_DISCOVER_SEPS; remote_seps_index = 0; memset(remote_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); a2dp_signaling_emit_connection_established(a2dp_source_context.a2dp_callback, cid, sc.remote_addr, status); avdtp_source_discover_stream_endpoints(cid); break; } case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY:{ log_info("A2DP received SBC capability."); if (!sc.local_stream_endpoint) { log_error("invalid local seid %d", avdtp_subevent_signaling_media_codec_sbc_capability_get_local_seid(packet)); return; } log_info("A2DP received SBC capability."); uint8_t sampling_frequency = avdtp_choose_sbc_sampling_frequency(sc.local_stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); uint8_t channel_mode = avdtp_choose_sbc_channel_mode(sc.local_stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); uint8_t block_length = avdtp_choose_sbc_block_length(sc.local_stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); uint8_t subbands = avdtp_choose_sbc_subbands(sc.local_stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); uint8_t allocation_method = avdtp_choose_sbc_allocation_method(sc.local_stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); uint8_t max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(sc.local_stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); uint8_t min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(sc.local_stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information[0] = (sampling_frequency << 4) | channel_mode; sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information[1] = (block_length << 4) | (subbands << 2) | allocation_method; sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information[2] = min_bitpool_value; sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information[3] = max_bitpool_value; sc.local_stream_endpoint->remote_configuration_bitmap = store_bit16(sc.local_stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); sc.local_stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_type = AVDTP_CODEC_SBC; app_state = A2DP_W2_SET_CONFIGURATION; break; } case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: log_info("received non SBC codec. not implemented"); break; case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: log_info("received, but not forwarded: AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY, remote seid %d", avdtp_subevent_signaling_media_transport_capability_get_remote_seid(packet)); break; case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: log_info("received, but not forwarded: AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY, remote seid %d", avdtp_subevent_signaling_reporting_capability_get_remote_seid(packet)); break; case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: log_info("received, but not forwarded: AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY, remote seid %d", avdtp_subevent_signaling_recovery_capability_get_remote_seid(packet)); break; case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: log_info("received, but not forwarded: AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY, remote seid %d", avdtp_subevent_signaling_content_protection_capability_get_remote_seid(packet)); break; case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: log_info("received, but not forwarded: AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY, remote seid %d", avdtp_subevent_signaling_header_compression_capability_get_remote_seid(packet)); break; case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: log_info("received, but not forwarded: AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY, remote seid %d", avdtp_subevent_signaling_multiplexing_capability_get_remote_seid(packet)); break; case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: a2dp_signaling_emit_delay_report_capability(a2dp_source_context.a2dp_callback, packet, size); break; case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: a2dp_signaling_emit_capabilities_done(a2dp_source_context.a2dp_callback, packet, size); break; case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: // forward packet: a2dp_signaling_emit_delay_report(a2dp_source_context.a2dp_callback, packet, size); break; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ // TODO check cid sc.sampling_frequency = avdtp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); sc.channel_mode = avdtp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet); sc.block_length = avdtp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); sc.subbands = avdtp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); sc.allocation_method = avdtp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); sc.max_bitpool_value = avdtp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); sc.min_bitpool_value = avdtp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); // TODO: deal with reconfigure: avdtp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); log_info("A2DP received SBC Config: sample rate %u, max bitpool %u.", sc.sampling_frequency, sc.max_bitpool_value); log_info("A2DP received SBC Config: sample rate %u, max bitpool %u.", sc.sampling_frequency, sc.max_bitpool_value); app_state = A2DP_W2_OPEN_STREAM_WITH_SEID; a2dp_signaling_emit_media_codec_sbc(a2dp_source_context.a2dp_callback, packet, size); break; } case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: cid = avdtp_subevent_streaming_can_send_media_packet_now_get_avdtp_cid(packet); local_seid = avdtp_subevent_streaming_can_send_media_packet_now_get_avdtp_cid(packet); log_info("AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW cid 0x%02x, local_seid %d", cid, local_seid); a2dp_streaming_emit_can_send_media_packet_now(a2dp_source_context.a2dp_callback, cid, local_seid); break; case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: avdtp_subevent_streaming_connection_established_get_bd_addr(packet, address); status = avdtp_subevent_streaming_connection_established_get_status(packet); cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); remote_seid = avdtp_subevent_streaming_connection_established_get_remote_seid(packet); local_seid = avdtp_subevent_streaming_connection_established_get_local_seid(packet); if (status != 0){ log_info("AVDTP_SUBEVENT_STREAMING_CONNECTION could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); a2dp_streaming_emit_connection_established(a2dp_source_context.a2dp_callback, cid, address, local_seid, remote_seid, status); break; } log_info("AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED --- avdtp_cid 0x%02x, local seid %d, remote seid %d", cid, local_seid, remote_seid); app_state = A2DP_STREAMING_OPENED; a2dp_streaming_emit_connection_established(a2dp_source_context.a2dp_callback, cid, address, local_seid, remote_seid, 0); break; case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND:{ avdtp_sep_t sep; 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("Found sep: seid %u, in_use %d, media type %d, sep type %d (1-SNK)", sep.seid, sep.in_use, sep.media_type, sep.type); remote_seps[remote_seps_index++] = sep; break; } case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: app_state = A2DP_W2_GET_CAPABILITIES; sc.active_remote_sep_index = 0; break; case AVDTP_SUBEVENT_SIGNALING_ACCEPT: // TODO check cid signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); log_info("A2DP Accepted %d, state %d", signal_identifier, app_state); switch (app_state){ case A2DP_W2_GET_CAPABILITIES: if (sc.active_remote_sep_index < remote_seps_index){ sc.active_remote_sep = &remote_seps[sc.active_remote_sep_index++]; avdtp_source_get_capabilities(cid, sc.active_remote_sep->seid); } break; case A2DP_W2_SET_CONFIGURATION:{ if (!sc.local_stream_endpoint) return; log_info("A2DP initiate set configuration locally and wait for response ... "); app_state = A2DP_IDLE; avdtp_source_set_configuration(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.active_remote_sep->seid, sc.local_stream_endpoint->remote_configuration_bitmap, sc.local_stream_endpoint->remote_configuration); break; } case A2DP_W2_RECONFIGURE_WITH_SEID: log_info("A2DP reconfigured"); a2dp_signaling_emit_reconfigured(a2dp_source_context.a2dp_callback, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), 0); app_state = A2DP_STREAMING_OPENED; break; case A2DP_W2_OPEN_STREAM_WITH_SEID:{ log_info("A2DP open stream "); app_state = A2DP_W4_OPEN_STREAM_WITH_SEID; avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.active_remote_sep->seid); break; } case A2DP_STREAMING_OPENED: if (!a2dp_source_context.a2dp_callback) return; switch (signal_identifier){ case AVDTP_SI_START: a2dp_signaling_emit_control_command(a2dp_source_context.a2dp_callback, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); break; case AVDTP_SI_SUSPEND: a2dp_signaling_emit_control_command(a2dp_source_context.a2dp_callback, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); break; case AVDTP_SI_ABORT: case AVDTP_SI_CLOSE: a2dp_signaling_emit_control_command(a2dp_source_context.a2dp_callback, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); break; default: break; } break; default: app_state = A2DP_IDLE; break; } break; case AVDTP_SUBEVENT_SIGNALING_REJECT: case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: app_state = A2DP_IDLE; a2dp_signaling_emit_reject_cmd(a2dp_source_context.a2dp_callback, packet, size); break; case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED:{ app_state = A2DP_IDLE; uint8_t event[6]; int pos = 0; event[pos++] = HCI_EVENT_A2DP_META; event[pos++] = sizeof(event) - 2; event[pos++] = A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED; little_endian_store_16(event, pos, avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet)); pos += 2; event[pos++] = avdtp_subevent_streaming_connection_released_get_local_seid(packet); (*a2dp_source_context.a2dp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); break; } case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED:{ app_state = A2DP_IDLE; uint8_t event[6]; int pos = 0; event[pos++] = HCI_EVENT_A2DP_META; event[pos++] = sizeof(event) - 2; event[pos++] = A2DP_SUBEVENT_STREAM_RELEASED; little_endian_store_16(event, pos, avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet)); pos += 2; event[pos++] = avdtp_subevent_streaming_connection_released_get_local_seid(packet); (*a2dp_source_context.a2dp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); break; } default: app_state = A2DP_IDLE; log_info("not implemented"); break; } } void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ if (callback == NULL){ log_error("a2dp_source_register_packet_handler called with NULL callback"); return; } avdtp_source_register_packet_handler(&packet_handler); a2dp_source_context.a2dp_callback = callback; } void a2dp_source_init(void){ avdtp_source_init(&a2dp_source_context); } avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, uint8_t * codec_capabilities, uint16_t codec_capabilities_len, uint8_t * media_codec_info, uint16_t media_codec_info_len){ avdtp_stream_endpoint_t * local_stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); if (!local_stream_endpoint){ return NULL; } avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(local_stream_endpoint)); avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(local_stream_endpoint), media_type, media_codec_type, codec_capabilities, codec_capabilities_len); local_stream_endpoint->remote_configuration.media_codec.media_codec_information = media_codec_info; local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_info_len; sc.local_stream_endpoint = local_stream_endpoint; avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(local_stream_endpoint)); return local_stream_endpoint; } uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint8_t loc_seid, uint16_t * a2dp_cid){ sc.local_stream_endpoint = avdtp_stream_endpoint_for_seid(loc_seid, &a2dp_source_context); if (!sc.local_stream_endpoint){ log_error(" no local_stream_endpoint for seid %d", loc_seid); return AVDTP_SEID_DOES_NOT_EXIST; } memcpy(sc.remote_addr, remote_addr, 6); return avdtp_source_connect(remote_addr, a2dp_cid); } uint8_t a2dp_source_disconnect(uint16_t a2dp_cid){ return avdtp_disconnect(a2dp_cid, &a2dp_source_context); } uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t a2dp_cid, uint32_t sampling_frequency){ // UNUSED(sampling_frequency); log_info("a2dp_source_reconfigure_stream"); memcpy(sc.local_stream_endpoint->reconfigure_media_codec_sbc_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, 4); // update sampling frequency uint8_t config = sc.local_stream_endpoint->reconfigure_media_codec_sbc_info[0] & 0x0f; switch (sampling_frequency){ case 48000: config |= (AVDTP_SBC_48000 << 4); break; case 44100: config |= (AVDTP_SBC_44100 << 4); break; case 32000: config |= (AVDTP_SBC_32000 << 4); break; case 16000: config |= (AVDTP_SBC_16000 << 4); break; default: log_error("Unsupported sampling frequency %u", sampling_frequency); return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; } sc.local_stream_endpoint->reconfigure_media_codec_sbc_info[0] = config; avdtp_capabilities_t new_configuration; new_configuration.media_codec.media_type = AVDTP_AUDIO; new_configuration.media_codec.media_codec_type = AVDTP_CODEC_SBC; new_configuration.media_codec.media_codec_information_len = 4; new_configuration.media_codec.media_codec_information = sc.local_stream_endpoint->reconfigure_media_codec_sbc_info; // sttart reconfigure app_state = A2DP_W2_RECONFIGURE_WITH_SEID; return avdtp_source_reconfigure( a2dp_cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.active_remote_sep->seid, 1 << AVDTP_MEDIA_CODEC, new_configuration ); } uint8_t a2dp_source_start_stream(uint16_t a2dp_cid, uint8_t local_seid){ return avdtp_start_stream(a2dp_cid, local_seid, &a2dp_source_context); } uint8_t a2dp_source_pause_stream(uint16_t a2dp_cid, uint8_t local_seid){ return avdtp_suspend_stream(a2dp_cid, local_seid, &a2dp_source_context); } void a2dp_source_stream_endpoint_request_can_send_now(uint16_t a2dp_cid, uint8_t local_seid){ avdtp_source_stream_endpoint_request_can_send_now(a2dp_cid, local_seid); } int a2dp_max_media_payload_size(uint16_t a2dp_cid, uint8_t local_seid){ return avdtp_max_media_payload_size(a2dp_cid, local_seid); } int a2dp_source_stream_send_media_payload(uint16_t a2dp_cid, uint8_t local_seid, uint8_t * storage, int num_bytes_to_copy, uint8_t num_frames, uint8_t marker){ return avdtp_source_stream_send_media_payload(a2dp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); }