/* * Copyright (C) 2016 BlueKitchen GmbH * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the copyright holders nor the names of * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * 4. Any redistribution, use, or modification is done solely for * personal benefit and not for any commercial purpose or for * monetary gain. * * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Please inquire about commercial licensing options at * contact@bluekitchen-gmbh.com * */ #include #include #include #include #include #include #include "btstack.h" #define NUM_CHANNELS 2 #define A2DP_SAMPLE_RATE 44100 #define BYTES_PER_AUDIO_SAMPLE (2*NUM_CHANNELS) #define AUDIO_TIMEOUT_MS 10 #define TABLE_SIZE_441HZ 100 #define AVDTP_MEDIA_PAYLOAD_HEADER_SIZE 12 static const int16_t sine_int16[] = { 0, 2057, 4107, 6140, 8149, 10126, 12062, 13952, 15786, 17557, 19260, 20886, 22431, 23886, 25247, 26509, 27666, 28714, 29648, 30466, 31163, 31738, 32187, 32509, 32702, 32767, 32702, 32509, 32187, 31738, 31163, 30466, 29648, 28714, 27666, 26509, 25247, 23886, 22431, 20886, 19260, 17557, 15786, 13952, 12062, 10126, 8149, 6140, 4107, 2057, 0, -2057, -4107, -6140, -8149, -10126, -12062, -13952, -15786, -17557, -19260, -20886, -22431, -23886, -25247, -26509, -27666, -28714, -29648, -30466, -31163, -31738, -32187, -32509, -32702, -32767, -32702, -32509, -32187, -31738, -31163, -30466, -29648, -28714, -27666, -26509, -25247, -23886, -22431, -20886, -19260, -17557, -15786, -13952, -12062, -10126, -8149, -6140, -4107, -2057, }; typedef struct { // bitmaps uint8_t sampling_frequency_bitmap; uint8_t channel_mode_bitmap; uint8_t block_length_bitmap; uint8_t subbands_bitmap; uint8_t allocation_method_bitmap; uint8_t min_bitpool_value; uint8_t max_bitpool_value; } adtvp_media_codec_information_sbc_t; typedef struct { int reconfigure; int num_channels; int sampling_frequency; int channel_mode; int block_length; int subbands; int allocation_method; int min_bitpool_value; int max_bitpool_value; int frames_per_buffer; } avdtp_media_codec_configuration_sbc_t; #ifdef HAVE_BTSTACK_STDIN // mac 2011: static const char * device_addr_string = "04:0C:CE:E4:85:D3"; // pts: static const char * device_addr_string = "00:1B:DC:08:0A:A5"; // mac 2013: static const char * device_addr_string = "84:38:35:65:d1:15"; // phone 2013: static const char * device_addr_string = "D8:BB:2C:DF:F0:F2"; // minijambox: static const char * device_addr_string = "00:21:3C:AC:F7:38"; // head phones: static const char * device_addr_string = "00:18:09:28:50:18"; // bt dongle: static const char * device_addr_string = "00:15:83:5F:9D:46"; #endif typedef struct { uint16_t avdtp_cid; uint8_t local_seid; uint8_t remote_seid; uint32_t time_audio_data_sent; // ms uint32_t acc_num_missed_samples; uint32_t samples_ready; btstack_timer_source_t audio_timer; uint8_t streaming; int max_media_payload_size; uint8_t sbc_storage[1030]; uint16_t sbc_storage_count; uint8_t sbc_ready_to_send; } a2dp_media_sending_context_t; a2dp_media_sending_context_t media_tracker; static bd_addr_t device_addr; static int sine_phase; static uint8_t sdp_avdtp_source_service_buffer[150]; static avdtp_stream_endpoint_context_t sc; static uint16_t remote_configuration_bitmap; static avdtp_capabilities_t remote_configuration; static avdtp_context_t a2dp_source_context; static btstack_packet_callback_registration_t hci_event_callback_registration; static void a2dp_source_setup_media_header(uint8_t * media_packet, int size, int *offset, uint8_t marker, uint16_t sequence_number){ if (size < AVDTP_MEDIA_PAYLOAD_HEADER_SIZE){ log_error("small outgoing buffer"); return; } uint8_t rtp_version = 2; uint8_t padding = 0; uint8_t extension = 0; uint8_t csrc_count = 0; uint8_t payload_type = 1; //0x60; // uint16_t sequence_number = stream_endpoint->sequence_number; uint32_t timestamp = btstack_run_loop_get_time_ms(); uint32_t ssrc = 0x11223344; // rtp header (min size 12B) int pos = 0; // int mtu = l2cap_get_remote_mtu_for_local_cid(stream_endpoint->l2cap_media_cid); media_packet[pos++] = (rtp_version << 6) | (padding << 5) | (extension << 4) | csrc_count; media_packet[pos++] = (marker << 1) | payload_type; big_endian_store_16(media_packet, pos, sequence_number); pos += 2; big_endian_store_32(media_packet, pos, timestamp); pos += 4; big_endian_store_32(media_packet, pos, ssrc); // only used for multicast pos += 4; *offset = pos; } static void a2dp_source_copy_media_payload(uint8_t * media_packet, int size, int * offset, uint8_t * storage, int num_bytes_to_copy, uint8_t num_frames){ if (size < num_bytes_to_copy + 1){ log_error("small outgoing buffer: buffer size %u, but need %u", size, num_bytes_to_copy + 1); return; } int pos = *offset; media_packet[pos++] = num_frames; // (fragmentation << 7) | (starting_packet << 6) | (last_packet << 5) | num_frames; memcpy(media_packet + pos, storage, num_bytes_to_copy); pos += num_bytes_to_copy; *offset = pos; } static int avdtp_source_stream_send_media_payload(uint8_t local_seid, uint8_t * storage, int num_bytes_to_copy, uint8_t num_frames, uint8_t marker){ avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(local_seid, &a2dp_source_context); if (!stream_endpoint) { log_error("no stream_endpoint found for seid %d", local_seid); return 0; } if (stream_endpoint->l2cap_media_cid == 0){ log_error("no media cid found for seid %d", local_seid); return 0; } int size = l2cap_get_remote_mtu_for_local_cid(stream_endpoint->l2cap_media_cid); int offset = 0; // HACK / PTS requests ERTM although we did not offer it in L2CAP Information Request. Withouth ERTM support, default MTU of 48 will be used, but that's to // small for a 44.1kHz/16/8/Stereo/bitpool 53 sbc frame of 119 bytes (+ media info) size = 0x290; l2cap_reserve_packet_buffer(); uint8_t * media_packet = l2cap_get_outgoing_buffer(); //int size = l2cap_get_remote_mtu_for_local_cid(stream_endpoint->l2cap_media_cid); a2dp_source_setup_media_header(media_packet, size, &offset, marker, stream_endpoint->sequence_number); a2dp_source_copy_media_payload(media_packet, size, &offset, storage, num_bytes_to_copy, num_frames); stream_endpoint->sequence_number++; l2cap_send_prepared(stream_endpoint->l2cap_media_cid, offset); return size; } static void a2dp_demo_send_media_packet(void){ int num_bytes_in_frame = btstack_sbc_encoder_sbc_buffer_length(); int bytes_in_storage = media_tracker.sbc_storage_count; uint8_t num_frames = bytes_in_storage / num_bytes_in_frame; avdtp_source_stream_send_media_payload(media_tracker.local_seid, media_tracker.sbc_storage, bytes_in_storage, num_frames, 0); media_tracker.sbc_storage_count = 0; media_tracker.sbc_ready_to_send = 0; } static void produce_sine_audio(int16_t * pcm_buffer, int num_samples_to_write){ int count; for (count = 0; count < num_samples_to_write ; count++){ pcm_buffer[count * 2] = sine_int16[sine_phase]; pcm_buffer[count * 2 + 1] = sine_int16[sine_phase]; sine_phase++; if (sine_phase >= TABLE_SIZE_441HZ){ sine_phase -= TABLE_SIZE_441HZ; } } } static int fill_sbc_audio_buffer(a2dp_media_sending_context_t * context){ // perform sbc encodin int total_num_bytes_read = 0; int num_audio_samples_per_sbc_buffer = btstack_sbc_encoder_num_audio_frames(); // printf("num_audio_samples_per_sbc_buffer %d, btstack_sbc_encoder_sbc_buffer_length() %d\n", num_audio_samples_per_sbc_buffer, btstack_sbc_encoder_sbc_buffer_length()); while (context->samples_ready >= num_audio_samples_per_sbc_buffer && (context->max_media_payload_size - context->sbc_storage_count) >= btstack_sbc_encoder_sbc_buffer_length()){ uint8_t pcm_frame[256*BYTES_PER_AUDIO_SAMPLE]; produce_sine_audio((int16_t *) pcm_frame, num_audio_samples_per_sbc_buffer); btstack_sbc_encoder_process_data((int16_t *) pcm_frame); uint16_t sbc_frame_size = btstack_sbc_encoder_sbc_buffer_length(); uint8_t * sbc_frame = btstack_sbc_encoder_sbc_buffer(); total_num_bytes_read += num_audio_samples_per_sbc_buffer; memcpy(&context->sbc_storage[context->sbc_storage_count], sbc_frame, sbc_frame_size); context->sbc_storage_count += sbc_frame_size; context->samples_ready -= num_audio_samples_per_sbc_buffer; } return total_num_bytes_read; } static void avdtp_audio_timeout_handler(btstack_timer_source_t * timer){ a2dp_media_sending_context_t * context = (a2dp_media_sending_context_t *) btstack_run_loop_get_timer_context(timer); btstack_run_loop_set_timer(&context->audio_timer, AUDIO_TIMEOUT_MS); btstack_run_loop_add_timer(&context->audio_timer); uint32_t now = btstack_run_loop_get_time_ms(); uint32_t update_period_ms = AUDIO_TIMEOUT_MS; if (context->time_audio_data_sent > 0){ update_period_ms = now - context->time_audio_data_sent; } uint32_t num_samples = (update_period_ms * A2DP_SAMPLE_RATE) / 1000; context->acc_num_missed_samples += (update_period_ms * A2DP_SAMPLE_RATE) % 1000; while (context->acc_num_missed_samples >= 1000){ num_samples++; context->acc_num_missed_samples -= 1000; } context->time_audio_data_sent = now; context->samples_ready += num_samples; if (context->sbc_ready_to_send) return; fill_sbc_audio_buffer(context); if ((context->sbc_storage_count + btstack_sbc_encoder_sbc_buffer_length()) > context->max_media_payload_size){ // schedule sending context->sbc_ready_to_send = 1; // a2dp_source_stream_endpoint_request_can_send_now(context->local_seid); avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(context->local_seid, &a2dp_source_context); if (!stream_endpoint) { printf("no stream_endpoint for seid %d\n", context->local_seid); return; } stream_endpoint->send_stream = 1; if (stream_endpoint->connection){ avdtp_request_can_send_now_initiator(stream_endpoint->connection, stream_endpoint->l2cap_media_cid); } } } // static int avdtp_max_media_payload_size(uint8_t local_seid){ // avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(local_seid, &a2dp_source_context); // if (!stream_endpoint) { // log_error("no stream_endpoint found for seid %d", local_seid); // return 0; // } // if (stream_endpoint->l2cap_media_cid == 0){ // log_error("no media cid found for seid %d", local_seid); // return 0; // } // return l2cap_get_remote_mtu_for_local_cid(stream_endpoint->l2cap_media_cid) - AVDTP_MEDIA_PAYLOAD_HEADER_SIZE; // } static void a2dp_demo_timer_start(a2dp_media_sending_context_t * context){ context->max_media_payload_size = 0x290;// avdtp_max_media_payload_size(context->local_seid); context->sbc_storage_count = 0; context->sbc_ready_to_send = 0; context->streaming = 1; btstack_run_loop_remove_timer(&context->audio_timer); btstack_run_loop_set_timer_handler(&context->audio_timer, avdtp_audio_timeout_handler); btstack_run_loop_set_timer_context(&context->audio_timer, context); btstack_run_loop_set_timer(&context->audio_timer, AUDIO_TIMEOUT_MS); btstack_run_loop_add_timer(&context->audio_timer); } static void a2dp_demo_timer_stop(a2dp_media_sending_context_t * context){ context->time_audio_data_sent = 0; context->acc_num_missed_samples = 0; context->samples_ready = 0; context->streaming = 1; context->sbc_storage_count = 0; context->sbc_ready_to_send = 0; btstack_run_loop_remove_timer(&context->audio_timer); } static void a2dp_demo_timer_pause(a2dp_media_sending_context_t * context){ btstack_run_loop_remove_timer(&context->audio_timer); } static void initialize_streaming_context(const uint8_t * configuration){ sc.channel_mode = configuration[0] & 0x0F; sc.sampling_frequency = configuration[0] >> 4; sc.block_length = configuration[1] >> 4; sc.subbands = (configuration[1] & 0x0F) >> 1; sc.allocation_method = (configuration[1] & 0x03) >> 1; sc.max_bitpool_value = configuration[3]; if (sc.channel_mode & AVDTP_SBC_JOINT_STEREO){ sc.channel_mode = 3; } else if (sc.channel_mode & AVDTP_SBC_STEREO){ sc.channel_mode = 2; } else if (sc.channel_mode & AVDTP_SBC_DUAL_CHANNEL){ sc.channel_mode = 1; } else if (sc.channel_mode & AVDTP_SBC_MONO){ sc.channel_mode = 0; } if (sc.sampling_frequency & AVDTP_SBC_16000){ sc.sampling_frequency = 16000; } if (sc.sampling_frequency & AVDTP_SBC_32000){ sc.sampling_frequency = 32000; } if (sc.sampling_frequency & AVDTP_SBC_44100){ sc.sampling_frequency = 44100; } if (sc.sampling_frequency & AVDTP_SBC_48000){ sc.sampling_frequency = 48000; } if (sc.subbands & AVDTP_SBC_SUBBANDS_4){ sc.subbands = 4; } if (sc.subbands & AVDTP_SBC_SUBBANDS_8){ sc.subbands = 8; } if (sc.block_length & AVDTP_SBC_BLOCK_LENGTH_4){ sc.block_length = 4; } if (sc.block_length & AVDTP_SBC_BLOCK_LENGTH_8){ sc.block_length = 8; } if (sc.block_length & AVDTP_SBC_BLOCK_LENGTH_12){ sc.block_length = 12; } if (sc.block_length & AVDTP_SBC_BLOCK_LENGTH_16){ sc.block_length = 16; } } static void initialize_sbc_encoder(void){ printf("streaming_context: block length %d, subbands %d, allocation_method %d, sampling_frequency %d, max_bitpool_value %d, channel_mode %d\n", sc.block_length, sc.subbands, sc.allocation_method, sc.sampling_frequency, sc.max_bitpool_value, sc.channel_mode); btstack_sbc_encoder_init(&sc.sbc_encoder_state, SBC_MODE_STANDARD, sc.block_length, sc.subbands, sc.allocation_method, sc.sampling_frequency, sc.max_bitpool_value, sc.channel_mode); } static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ if (packet_type != HCI_EVENT_PACKET) return; if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; UNUSED(channel); UNUSED(size); uint8_t signal_identifier; uint8_t status; avdtp_sep_t sep; uint16_t avdtp_cid; switch (packet[2]){ case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: avdtp_cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); status = avdtp_subevent_signaling_connection_established_get_status(packet); if (status != 0){ printf("AVDTP source signaling connection failed: status %d\n", status); break; } media_tracker.avdtp_cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); printf("AVDTP source signaling connection established: avdtp_cid 0x%02x\n", avdtp_cid); break; case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: status = avdtp_subevent_streaming_connection_established_get_status(packet); if (status != 0){ printf("Streaming connection failed: status %d\n", status); break; } avdtp_cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); printf("Streaming connection established, avdtp_cid 0x%02x\n", avdtp_cid); break; case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 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_subevent_signaling_sep_found_get_media_type(packet); sep.type = avdtp_subevent_signaling_sep_found_get_sep_type(packet); printf("Found sep: seid %u, in_use %d, media type %d, sep type %d (1-SNK)\n", sep.seid, sep.in_use, sep.media_type, sep.type); break; case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY:{ // TODO check cid if (!sc.local_stream_endpoint) return; 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; break; } case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ // TODO check cid printf(" AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION \n"); sc.sampling_frequency = avdtp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(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) - 1; sc.max_bitpool_value = avdtp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); // TODO: deal with reconfigure: avdtp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); break; } case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: printf("Received non SBC codec: not parsed\n"); break; case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: a2dp_demo_send_media_packet(); break; case AVDTP_SUBEVENT_SIGNALING_ACCEPT: // TODO check cid signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); printf("Accepted %s\n", avdtp_si2str(signal_identifier)); switch (signal_identifier){ case AVDTP_SI_OPEN: initialize_sbc_encoder(); break; case AVDTP_SI_SET_CONFIGURATION: break; case AVDTP_SI_START: printf("Stream started.\n"); a2dp_demo_timer_start(&media_tracker); break; case AVDTP_SI_SUSPEND: printf("Stream paused.\n"); a2dp_demo_timer_pause(&media_tracker); break; case AVDTP_SI_ABORT: case AVDTP_SI_CLOSE: printf("Stream released.\n"); a2dp_demo_timer_stop(&media_tracker); break; default: break; } break; case AVDTP_SUBEVENT_SIGNALING_REJECT: signal_identifier = avdtp_subevent_signaling_reject_get_signal_identifier(packet); printf("Rejected %s\n", avdtp_si2str(signal_identifier)); break; case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: signal_identifier = avdtp_subevent_signaling_general_reject_get_signal_identifier(packet); printf("Rejected %s\n", avdtp_si2str(signal_identifier)); break; case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: a2dp_demo_timer_stop(&media_tracker); printf("Streaming connection released.\n"); break; case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: a2dp_demo_timer_stop(&media_tracker); printf("Signaling connection released.\n"); break; default: printf("AVDTP Source PTS test: event not parsed 0x%02x\n", packet[2]); break; } } static const uint8_t media_sbc_codec_capabilities[] = { 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 2, 53 }; static const uint8_t media_sbc_codec_configuration[] = { (AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, (AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 2, 53 }; static const uint8_t media_sbc_codec_reconfiguration[] = { (AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, (AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_SNR, 2, 53 }; #ifdef HAVE_BTSTACK_STDIN static void show_usage(void){ bd_addr_t iut_address; gap_local_bd_addr(iut_address); printf("\n--- Bluetooth AVDTP SOURCE Test Console %s ---\n", bd_addr_to_str(iut_address)); printf("c - create connection to addr %s\n", device_addr_string); printf("C - disconnect\n"); printf("d - discover stream endpoints\n"); printf("g - get capabilities\n"); printf("a - get all capabilities\n"); printf("s - set configuration\n"); printf("f - get configuration\n"); printf("R - reconfigure stream with %d\n", media_tracker.remote_seid); printf("o - open stream with seid %d\n", media_tracker.remote_seid); printf("m - start stream with %d\n", media_tracker.remote_seid); printf("A - abort stream with %d\n", media_tracker.remote_seid); printf("S - stop stream with %d\n", media_tracker.remote_seid); printf("P - suspend stream with %d\n", media_tracker.remote_seid); printf("X - stop streaming sine\n"); printf("Ctrl-c - exit\n"); printf("---\n"); } static void stdin_process(char cmd){ switch (cmd){ case 'c': printf("Establish AVDTP Source connection to %s\n", device_addr_string); avdtp_source_connect(device_addr, &media_tracker.avdtp_cid); break; case 'C': printf("Disconnect AVDTP Source\n"); avdtp_source_disconnect(media_tracker.avdtp_cid); break; case 'd': printf("Discover stream endpoints of %s\n", device_addr_string); avdtp_source_discover_stream_endpoints(media_tracker.avdtp_cid); break; case 'g': printf("Get capabilities of stream endpoint with seid %d\n", media_tracker.remote_seid); avdtp_source_get_capabilities(media_tracker.avdtp_cid, media_tracker.remote_seid); break; case 'a': printf("Get all capabilities of stream endpoint with seid %d\n", media_tracker.remote_seid); avdtp_source_get_all_capabilities(media_tracker.avdtp_cid, media_tracker.remote_seid); break; case 'f': printf("Get configuration of stream endpoint with seid %d\n", media_tracker.remote_seid); avdtp_source_get_configuration(media_tracker.avdtp_cid, media_tracker.remote_seid); break; case 's': printf("Set configuration of stream endpoint with seid %d\n", media_tracker.remote_seid); remote_configuration_bitmap = store_bit16(remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); remote_configuration.media_codec.media_type = AVDTP_AUDIO; remote_configuration.media_codec.media_codec_type = AVDTP_CODEC_SBC; remote_configuration.media_codec.media_codec_information_len = sizeof(media_sbc_codec_configuration); remote_configuration.media_codec.media_codec_information = (uint8_t *)media_sbc_codec_configuration; initialize_streaming_context(media_sbc_codec_configuration); avdtp_source_set_configuration(media_tracker.avdtp_cid, media_tracker.local_seid, media_tracker.remote_seid, remote_configuration_bitmap, remote_configuration); break; case 'R': printf("Reconfigure stream endpoint with seid %d\n", media_tracker.remote_seid); remote_configuration_bitmap = store_bit16(remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); remote_configuration.media_codec.media_type = AVDTP_AUDIO; remote_configuration.media_codec.media_codec_type = AVDTP_CODEC_SBC; remote_configuration.media_codec.media_codec_information_len = sizeof(media_sbc_codec_reconfiguration); remote_configuration.media_codec.media_codec_information = (uint8_t *)media_sbc_codec_reconfiguration; initialize_streaming_context(media_sbc_codec_reconfiguration); avdtp_source_reconfigure(media_tracker.avdtp_cid, media_tracker.local_seid, media_tracker.remote_seid, remote_configuration_bitmap, remote_configuration); break; case 'o': printf("Establish stream between local %d and remote %d seid\n", media_tracker.local_seid, media_tracker.remote_seid); initialize_sbc_encoder(); avdtp_source_open_stream(media_tracker.avdtp_cid, media_tracker.local_seid, media_tracker.remote_seid); break; case 'm': printf("Start stream between local %d and remote %d seid, \n", media_tracker.local_seid, media_tracker.remote_seid); avdtp_source_start_stream(media_tracker.avdtp_cid, media_tracker.local_seid); break; case 'A': printf("Abort stream between local %d and remote %d seid\n", media_tracker.local_seid, media_tracker.remote_seid); avdtp_source_abort_stream(media_tracker.avdtp_cid, media_tracker.local_seid); break; case 'S': printf("Release stream between local %d and remote %d seid\n", media_tracker.local_seid, media_tracker.remote_seid); avdtp_source_stop_stream(media_tracker.avdtp_cid, media_tracker.local_seid); break; case 'P': printf("Susspend stream between local %d and remote %d seid\n", media_tracker.local_seid, media_tracker.remote_seid); avdtp_source_suspend(media_tracker.avdtp_cid, media_tracker.local_seid); break; case 'X': printf("Stop streaming\n"); avdtp_source_stop_stream(media_tracker.avdtp_cid, media_tracker.local_seid); break; case '\n': case '\r': break; default: show_usage(); break; } } #endif int btstack_main(int argc, const char * argv[]); int btstack_main(int argc, const char * argv[]){ UNUSED(argc); (void)argv; /* Register for HCI events */ hci_event_callback_registration.callback = &packet_handler; hci_add_event_handler(&hci_event_callback_registration); l2cap_init(); // Initialize AVDTP Sink avdtp_source_init(&a2dp_source_context); avdtp_source_register_packet_handler(&packet_handler); avdtp_stream_endpoint_t * local_stream_endpoint = a2dp_source_create_stream_endpoint(AVDTP_AUDIO, AVDTP_CODEC_SBC, (uint8_t *)media_sbc_codec_capabilities, sizeof(media_sbc_codec_capabilities), (uint8_t *)media_sbc_codec_configuration, sizeof(media_sbc_codec_configuration)); media_tracker.local_seid = avdtp_local_seid(local_stream_endpoint); media_tracker.remote_seid = 1; // Initialize SDP sdp_init(); memset(sdp_avdtp_source_service_buffer, 0, sizeof(sdp_avdtp_source_service_buffer)); a2dp_source_create_sdp_record(sdp_avdtp_source_service_buffer, 0x10002, 1, NULL, NULL); sdp_register_service(sdp_avdtp_source_service_buffer); gap_set_local_name("BTstack AVDTP Source PTS Test"); gap_discoverable_control(1); gap_set_class_of_device(0x200408); #ifdef HAVE_BTSTACK_STDIN // parse human readable Bluetooth address sscanf_bd_addr(device_addr_string, device_addr); btstack_stdin_setup(stdin_process); #endif // turn on! hci_power_control(HCI_POWER_ON); return 0; }