1 /* 2 * Copyright (C) 2016 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "a2dp_source_demo.c" 39 40 /* 41 * a2dp_source_demo.c 42 */ 43 44 // ***************************************************************************** 45 /* EXAMPLE_START(a2dp_source_demo): Serve audio stream and handle remote playback control and queries. 46 * 47 * @text This A2DP Source example demonstrates how to send an audio data stream 48 * to a remote A2DP Sink device and how to switch between two audio data sources. 49 * In addition, the AVRCP Target is used to answer queries on currently played media, 50 * as well as to handle remote playback control, i.e. play, stop, repeat, etc. If HAVE_BTSTACK_STDIN 51 * is set, press SPACE on the console to show the available AVDTP and AVRCP commands. 52 * 53 * @text To test with a remote device, e.g. a Bluetooth speaker, 54 * set the device_addr_string to the Bluetooth address of your 55 * remote device in the code, and use the UI to connect and start playback. 56 * 57 * @text For more info on BTstack audio, see our blog post 58 * [A2DP Sink and Source on STM32 F4 Discovery Board](http://bluekitchen-gmbh.com/a2dp-sink-and-source-on-stm32-f4-discovery-board/). 59 * 60 */ 61 // ***************************************************************************** 62 63 64 #include <stdint.h> 65 #include <stdio.h> 66 #include <stdlib.h> 67 #include <string.h> 68 69 #include "btstack.h" 70 #include "hxcmod.h" 71 #include "mods/mod.h" 72 73 // logarithmic volume reduction, samples are divided by 2^x 74 // #define VOLUME_REDUCTION 3 75 // #undef HAVE_BTSTACK_STDIN 76 77 //#define AVRCP_BROWSING_ENABLED 78 79 #define NUM_CHANNELS 2 80 #define BYTES_PER_AUDIO_SAMPLE (2*NUM_CHANNELS) 81 #define AUDIO_TIMEOUT_MS 10 82 #define TABLE_SIZE_441HZ 100 83 84 #define SBC_STORAGE_SIZE 1030 85 86 typedef enum { 87 STREAM_SINE = 0, 88 STREAM_MOD, 89 STREAM_PTS_TEST 90 } stream_data_source_t; 91 92 typedef struct { 93 uint16_t a2dp_cid; 94 uint8_t local_seid; 95 uint8_t remote_seid; 96 uint8_t stream_opened; 97 uint16_t avrcp_cid; 98 99 uint32_t time_audio_data_sent; // ms 100 uint32_t acc_num_missed_samples; 101 uint32_t samples_ready; 102 btstack_timer_source_t audio_timer; 103 uint8_t streaming; 104 int max_media_payload_size; 105 106 uint8_t sbc_storage[SBC_STORAGE_SIZE]; 107 uint16_t sbc_storage_count; 108 uint8_t sbc_ready_to_send; 109 110 uint16_t volume; 111 } a2dp_media_sending_context_t; 112 113 static uint8_t media_sbc_codec_capabilities[] = { 114 (AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 115 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 116 2, 53 117 }; 118 119 // input signal: pre-computed int16 sine wave, 44100 Hz at 441 Hz 120 static const int16_t sine_int16_44100[] = { 121 0, 2057, 4107, 6140, 8149, 10126, 12062, 13952, 15786, 17557, 122 19260, 20886, 22431, 23886, 25247, 26509, 27666, 28714, 29648, 30466, 123 31163, 31738, 32187, 32509, 32702, 32767, 32702, 32509, 32187, 31738, 124 31163, 30466, 29648, 28714, 27666, 26509, 25247, 23886, 22431, 20886, 125 19260, 17557, 15786, 13952, 12062, 10126, 8149, 6140, 4107, 2057, 126 0, -2057, -4107, -6140, -8149, -10126, -12062, -13952, -15786, -17557, 127 -19260, -20886, -22431, -23886, -25247, -26509, -27666, -28714, -29648, -30466, 128 -31163, -31738, -32187, -32509, -32702, -32767, -32702, -32509, -32187, -31738, 129 -31163, -30466, -29648, -28714, -27666, -26509, -25247, -23886, -22431, -20886, 130 -19260, -17557, -15786, -13952, -12062, -10126, -8149, -6140, -4107, -2057, 131 }; 132 133 static const int num_samples_sine_int16_44100 = sizeof(sine_int16_44100) / 2; 134 135 // input signal: pre-computed int16 sine wave, 48000 Hz at 441 Hz 136 static const int16_t sine_int16_48000[] = { 137 0, 1905, 3804, 5690, 7557, 9398, 11207, 12978, 14706, 16383, 138 18006, 19567, 21062, 22486, 23834, 25101, 26283, 27376, 28377, 29282, 139 30087, 30791, 31390, 31884, 32269, 32545, 32712, 32767, 32712, 32545, 140 32269, 31884, 31390, 30791, 30087, 29282, 28377, 27376, 26283, 25101, 141 23834, 22486, 21062, 19567, 18006, 16383, 14706, 12978, 11207, 9398, 142 7557, 5690, 3804, 1905, 0, -1905, -3804, -5690, -7557, -9398, 143 -11207, -12978, -14706, -16384, -18006, -19567, -21062, -22486, -23834, -25101, 144 -26283, -27376, -28377, -29282, -30087, -30791, -31390, -31884, -32269, -32545, 145 -32712, -32767, -32712, -32545, -32269, -31884, -31390, -30791, -30087, -29282, 146 -28377, -27376, -26283, -25101, -23834, -22486, -21062, -19567, -18006, -16384, 147 -14706, -12978, -11207, -9398, -7557, -5690, -3804, -1905, }; 148 149 static const int num_samples_sine_int16_48000 = sizeof(sine_int16_48000) / 2; 150 151 typedef struct { 152 int reconfigure; 153 int num_channels; 154 int sampling_frequency; 155 int channel_mode; 156 int block_length; 157 int subbands; 158 int allocation_method; 159 int min_bitpool_value; 160 int max_bitpool_value; 161 int frames_per_buffer; 162 } avdtp_media_codec_configuration_sbc_t; 163 164 static btstack_packet_callback_registration_t hci_event_callback_registration; 165 166 // pts: static const char * device_addr_string = "00:1B:DC:08:0A:A5"; 167 // pts: static const char * device_addr_string = "00:1B:DC:08:E2:72"; 168 // mac 2013: static const char * device_addr_string = "84:38:35:65:d1:15"; 169 // phone 2013: static const char * device_addr_string = "D8:BB:2C:DF:F0:F2"; 170 // Minijambox: 171 static const char * device_addr_string = "00:21:3C:AC:F7:38"; 172 // Philips SHB9100: static const char * device_addr_string = "00:22:37:05:FD:E8"; 173 // RT-B6: static const char * device_addr_string = "00:75:58:FF:C9:7D"; 174 // BT dongle: static const char * device_addr_string = "00:1A:7D:DA:71:0A"; 175 // Sony MDR-ZX330BT static const char * device_addr_string = "00:18:09:28:50:18"; 176 // Panda (BM6) static const char * device_addr_string = "4F:3F:66:52:8B:E0"; 177 // BeatsX: static const char * device_addr_string = "DC:D3:A2:89:57:FB"; 178 // Green mushroom: static const char * device_addr_string = "41:42:2A:ED:D6:F3"; 179 180 static bd_addr_t device_addr; 181 182 static uint8_t sdp_a2dp_source_service_buffer[150]; 183 static uint8_t sdp_avrcp_target_service_buffer[200]; 184 static uint8_t sdp_avrcp_controller_service_buffer[200]; 185 186 static avdtp_media_codec_configuration_sbc_t sbc_configuration; 187 static btstack_sbc_encoder_state_t sbc_encoder_state; 188 189 static uint8_t media_sbc_codec_configuration[4]; 190 static a2dp_media_sending_context_t media_tracker; 191 192 static stream_data_source_t data_source; 193 194 static int sine_phase; 195 static int current_sample_rate = 44100; 196 static int new_sample_rate = 44100; 197 198 static int hxcmod_initialized; 199 static modcontext mod_context; 200 static tracker_buffer_state trkbuf; 201 202 /* AVRCP Target context START */ 203 static const uint8_t subunit_info[] = { 204 0,0,0,0, 205 1,1,1,1, 206 2,2,2,2, 207 3,3,3,3, 208 4,4,4,4, 209 5,5,5,5, 210 6,6,6,6, 211 7,7,7,7 212 }; 213 214 static uint32_t company_id = 0x112233; 215 static uint8_t companies_num = 1; 216 static uint8_t companies[] = { 217 0x00, 0x19, 0x58 //BT SIG registered CompanyID 218 }; 219 220 static uint8_t events_num = 6; 221 static uint8_t events[] = { 222 AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED, 223 AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED, 224 AVRCP_NOTIFICATION_EVENT_PLAYER_APPLICATION_SETTING_CHANGED, 225 AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED, 226 AVRCP_NOTIFICATION_EVENT_AVAILABLE_PLAYERS_CHANGED, 227 AVRCP_NOTIFICATION_EVENT_ADDRESSED_PLAYER_CHANGED 228 }; 229 230 typedef struct { 231 uint8_t track_id[8]; 232 uint32_t song_length_ms; 233 avrcp_playback_status_t status; 234 uint32_t song_position_ms; // 0xFFFFFFFF if not supported 235 } avrcp_play_status_info_t; 236 237 // python -c "print('a'*512)" 238 static const char title[] = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"; 239 240 avrcp_track_t tracks[] = { 241 {{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}, 1, "Sine", "Generated", "A2DP Source Demo", "monotone", 12345}, 242 {{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}, 2, "Nao-deceased", "Decease", "A2DP Source Demo", "vivid", 12345}, 243 {{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}, 3, (char *)title, "Decease", "A2DP Source Demo", "vivid", 12345}, 244 }; 245 int current_track_index; 246 avrcp_play_status_info_t play_info; 247 248 /* AVRCP Target context END */ 249 250 /* @section Main Application Setup 251 * 252 * @text The Listing MainConfiguration shows how to setup AD2P Source and AVRCP services. 253 * Besides calling init() method for each service, you'll also need to register several packet handlers: 254 * - hci_packet_handler - handles legacy pairing, here by using fixed '0000' pin code. 255 * - a2dp_source_packet_handler - handles events on stream connection status (established, released), the media codec configuration, and, the commands on stream itself (open, pause, stopp). 256 * - avrcp_packet_handler - receives connect/disconnect event. 257 * - avrcp_controller_packet_handler - receives answers for sent AVRCP commands. 258 * - avrcp_target_packet_handler - receives AVRCP commands, and registered notifications. 259 * - stdin_process - used to trigger AVRCP commands to the A2DP Source device, such are get now playing info, start, stop, volume control. Requires HAVE_BTSTACK_STDIN. 260 * 261 * @text To announce A2DP Source and AVRCP services, you need to create corresponding 262 * SDP records and register them with the SDP service. 263 */ 264 265 /* LISTING_START(MainConfiguration): Setup Audio Source and AVRCP Target services */ 266 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 267 static void a2dp_source_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size); 268 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 269 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 270 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 271 #ifdef HAVE_BTSTACK_STDIN 272 static void stdin_process(char cmd); 273 #endif 274 275 static void a2dp_demo_hexcmod_configure_sample_rate(int sample_rate); 276 277 static int a2dp_source_and_avrcp_services_init(void){ 278 // request role change on reconnecting headset to always use them in slave mode 279 hci_set_master_slave_policy(0); 280 281 l2cap_init(); 282 // Initialize A2DP Source. 283 a2dp_source_init(); 284 a2dp_source_register_packet_handler(&a2dp_source_packet_handler); 285 286 // Create stream endpoint. 287 avdtp_stream_endpoint_t * local_stream_endpoint = a2dp_source_create_stream_endpoint(AVDTP_AUDIO, AVDTP_CODEC_SBC, media_sbc_codec_capabilities, sizeof(media_sbc_codec_capabilities), media_sbc_codec_configuration, sizeof(media_sbc_codec_configuration)); 288 if (!local_stream_endpoint){ 289 printf("A2DP Source: not enough memory to create local stream endpoint\n"); 290 return 1; 291 } 292 media_tracker.local_seid = avdtp_local_seid(local_stream_endpoint); 293 avdtp_source_register_delay_reporting_category(media_tracker.local_seid); 294 295 // Initialize AVRCP Service. 296 avrcp_init(); 297 avrcp_register_packet_handler(&avrcp_packet_handler); 298 // Initialize AVRCP Target. 299 avrcp_target_init(); 300 avrcp_target_register_packet_handler(&avrcp_target_packet_handler); 301 // Initialize AVRCP Controller 302 avrcp_controller_init(); 303 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 304 305 // Initialize SDP, 306 sdp_init(); 307 308 // Create A2DP Source service record and register it with SDP. 309 memset(sdp_a2dp_source_service_buffer, 0, sizeof(sdp_a2dp_source_service_buffer)); 310 a2dp_source_create_sdp_record(sdp_a2dp_source_service_buffer, 0x10001, AVDTP_SOURCE_FEATURE_MASK_PLAYER, NULL, NULL); 311 sdp_register_service(sdp_a2dp_source_service_buffer); 312 313 // Create AVRCP target service record and register it with SDP. 314 memset(sdp_avrcp_target_service_buffer, 0, sizeof(sdp_avrcp_target_service_buffer)); 315 uint16_t supported_features = AVRCP_FEATURE_MASK_CATEGORY_PLAYER_OR_RECORDER; 316 #ifdef AVRCP_BROWSING_ENABLED 317 supported_features |= AVRCP_FEATURE_MASK_BROWSING; 318 #endif 319 avrcp_target_create_sdp_record(sdp_avrcp_target_service_buffer, 0x10002, supported_features, NULL, NULL); 320 sdp_register_service(sdp_avrcp_target_service_buffer); 321 322 // setup AVRCP Controller 323 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 324 uint16_t controller_supported_features = AVRCP_FEATURE_MASK_CATEGORY_PLAYER_OR_RECORDER; 325 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10003, controller_supported_features, NULL, NULL); 326 sdp_register_service(sdp_avrcp_controller_service_buffer); 327 328 // Set local name with a template Bluetooth address, that will be automatically 329 // replaced with a actual address once it is available, i.e. when BTstack boots 330 // up and starts talking to a Bluetooth module. 331 gap_set_local_name("A2DP Source 00:00:00:00:00:00"); 332 gap_discoverable_control(1); 333 gap_set_class_of_device(0x200408); 334 335 // Register for HCI events. 336 hci_event_callback_registration.callback = &hci_packet_handler; 337 hci_add_event_handler(&hci_event_callback_registration); 338 339 a2dp_demo_hexcmod_configure_sample_rate(current_sample_rate); 340 341 #ifdef HAVE_BTSTACK_STDIN 342 // Parse human readable Bluetooth address. 343 sscanf_bd_addr(device_addr_string, device_addr); 344 btstack_stdin_setup(stdin_process); 345 #endif 346 return 0; 347 } 348 /* LISTING_END */ 349 350 static void a2dp_demo_hexcmod_configure_sample_rate(int sample_rate){ 351 if (!hxcmod_initialized){ 352 hxcmod_initialized = hxcmod_init(&mod_context); 353 if (!hxcmod_initialized) { 354 printf("could not initialize hxcmod\n"); 355 return; 356 } 357 } 358 current_sample_rate = sample_rate; 359 media_tracker.sbc_storage_count = 0; 360 media_tracker.samples_ready = 0; 361 hxcmod_unload(&mod_context); 362 hxcmod_setcfg(&mod_context, current_sample_rate, 16, 1, 1, 1); 363 hxcmod_load(&mod_context, (void *) &mod_data, mod_len); 364 } 365 366 static void a2dp_demo_send_media_packet(void){ 367 int num_bytes_in_frame = btstack_sbc_encoder_sbc_buffer_length(); 368 int bytes_in_storage = media_tracker.sbc_storage_count; 369 uint8_t num_frames = bytes_in_storage / num_bytes_in_frame; 370 a2dp_source_stream_send_media_payload(media_tracker.a2dp_cid, media_tracker.local_seid, media_tracker.sbc_storage, bytes_in_storage, num_frames, 0); 371 media_tracker.sbc_storage_count = 0; 372 media_tracker.sbc_ready_to_send = 0; 373 } 374 375 static void produce_sine_audio(int16_t * pcm_buffer, int num_samples_to_write){ 376 int count; 377 for (count = 0; count < num_samples_to_write ; count++){ 378 switch (current_sample_rate){ 379 case 44100: 380 pcm_buffer[count * 2] = sine_int16_44100[sine_phase]; 381 pcm_buffer[count * 2 + 1] = sine_int16_44100[sine_phase]; 382 sine_phase++; 383 if (sine_phase >= num_samples_sine_int16_44100){ 384 sine_phase -= num_samples_sine_int16_44100; 385 } 386 break; 387 case 48000: 388 pcm_buffer[count * 2] = sine_int16_48000[sine_phase]; 389 pcm_buffer[count * 2 + 1] = sine_int16_48000[sine_phase]; 390 sine_phase++; 391 if (sine_phase >= num_samples_sine_int16_48000){ 392 sine_phase -= num_samples_sine_int16_48000; 393 } 394 break; 395 default: 396 break; 397 } 398 399 400 } 401 } 402 403 static void produce_mod_audio(int16_t * pcm_buffer, int num_samples_to_write){ 404 hxcmod_fillbuffer(&mod_context, (unsigned short *) &pcm_buffer[0], num_samples_to_write, &trkbuf); 405 } 406 407 static void produce_audio(int16_t * pcm_buffer, int num_samples){ 408 switch (data_source){ 409 case STREAM_SINE: 410 produce_sine_audio(pcm_buffer, num_samples); 411 break; 412 case STREAM_MOD: 413 produce_mod_audio(pcm_buffer, num_samples); 414 break; 415 default: 416 break; 417 } 418 #ifdef VOLUME_REDUCTION 419 int i; 420 for (i=0;i<num_samples*2;i++){ 421 if (pcm_buffer[i] > 0){ 422 pcm_buffer[i] = pcm_buffer[i] >> VOLUME_REDUCTION; 423 } else { 424 pcm_buffer[i] = -((-pcm_buffer[i]) >> VOLUME_REDUCTION); 425 } 426 } 427 #endif 428 } 429 430 static int a2dp_demo_fill_sbc_audio_buffer(a2dp_media_sending_context_t * context){ 431 // perform sbc encodin 432 int total_num_bytes_read = 0; 433 unsigned int num_audio_samples_per_sbc_buffer = btstack_sbc_encoder_num_audio_frames(); 434 while (context->samples_ready >= num_audio_samples_per_sbc_buffer 435 && (context->max_media_payload_size - context->sbc_storage_count) >= btstack_sbc_encoder_sbc_buffer_length()){ 436 437 int16_t pcm_frame[256*NUM_CHANNELS]; 438 439 produce_audio(pcm_frame, num_audio_samples_per_sbc_buffer); 440 btstack_sbc_encoder_process_data(pcm_frame); 441 442 uint16_t sbc_frame_size = btstack_sbc_encoder_sbc_buffer_length(); 443 uint8_t * sbc_frame = btstack_sbc_encoder_sbc_buffer(); 444 445 total_num_bytes_read += num_audio_samples_per_sbc_buffer; 446 memcpy(&context->sbc_storage[context->sbc_storage_count], sbc_frame, sbc_frame_size); 447 context->sbc_storage_count += sbc_frame_size; 448 context->samples_ready -= num_audio_samples_per_sbc_buffer; 449 } 450 return total_num_bytes_read; 451 } 452 453 static void a2dp_demo_audio_timeout_handler(btstack_timer_source_t * timer){ 454 a2dp_media_sending_context_t * context = (a2dp_media_sending_context_t *) btstack_run_loop_get_timer_context(timer); 455 btstack_run_loop_set_timer(&context->audio_timer, AUDIO_TIMEOUT_MS); 456 btstack_run_loop_add_timer(&context->audio_timer); 457 uint32_t now = btstack_run_loop_get_time_ms(); 458 459 uint32_t update_period_ms = AUDIO_TIMEOUT_MS; 460 if (context->time_audio_data_sent > 0){ 461 update_period_ms = now - context->time_audio_data_sent; 462 } 463 464 uint32_t num_samples = (update_period_ms * current_sample_rate) / 1000; 465 context->acc_num_missed_samples += (update_period_ms * current_sample_rate) % 1000; 466 467 while (context->acc_num_missed_samples >= 1000){ 468 num_samples++; 469 context->acc_num_missed_samples -= 1000; 470 } 471 context->time_audio_data_sent = now; 472 context->samples_ready += num_samples; 473 474 if (context->sbc_ready_to_send) return; 475 476 a2dp_demo_fill_sbc_audio_buffer(context); 477 478 if ((context->sbc_storage_count + btstack_sbc_encoder_sbc_buffer_length()) > context->max_media_payload_size){ 479 // schedule sending 480 context->sbc_ready_to_send = 1; 481 a2dp_source_stream_endpoint_request_can_send_now(context->a2dp_cid, context->local_seid); 482 } 483 } 484 485 static void a2dp_demo_timer_start(a2dp_media_sending_context_t * context){ 486 context->max_media_payload_size = btstack_min(a2dp_max_media_payload_size(context->a2dp_cid, context->local_seid), SBC_STORAGE_SIZE); 487 context->sbc_storage_count = 0; 488 context->sbc_ready_to_send = 0; 489 context->streaming = 1; 490 btstack_run_loop_remove_timer(&context->audio_timer); 491 btstack_run_loop_set_timer_handler(&context->audio_timer, a2dp_demo_audio_timeout_handler); 492 btstack_run_loop_set_timer_context(&context->audio_timer, context); 493 btstack_run_loop_set_timer(&context->audio_timer, AUDIO_TIMEOUT_MS); 494 btstack_run_loop_add_timer(&context->audio_timer); 495 } 496 497 static void a2dp_demo_timer_stop(a2dp_media_sending_context_t * context){ 498 context->time_audio_data_sent = 0; 499 context->acc_num_missed_samples = 0; 500 context->samples_ready = 0; 501 context->streaming = 1; 502 context->sbc_storage_count = 0; 503 context->sbc_ready_to_send = 0; 504 btstack_run_loop_remove_timer(&context->audio_timer); 505 } 506 507 static void dump_sbc_configuration(avdtp_media_codec_configuration_sbc_t * configuration){ 508 printf("Received media codec configuration:\n"); 509 printf(" - num_channels: %d\n", configuration->num_channels); 510 printf(" - sampling_frequency: %d\n", configuration->sampling_frequency); 511 printf(" - channel_mode: %d\n", configuration->channel_mode); 512 printf(" - block_length: %d\n", configuration->block_length); 513 printf(" - subbands: %d\n", configuration->subbands); 514 printf(" - allocation_method: %d\n", configuration->allocation_method); 515 printf(" - bitpool_value [%d, %d] \n", configuration->min_bitpool_value, configuration->max_bitpool_value); 516 } 517 518 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 519 UNUSED(channel); 520 UNUSED(size); 521 if (packet_type != HCI_EVENT_PACKET) return; 522 523 #ifndef HAVE_BTSTACK_STDIN 524 if (hci_event_packet_get_type(packet) == BTSTACK_EVENT_STATE){ 525 if (btstack_event_state_get_state(packet) != HCI_STATE_WORKING) return; 526 printf("Create A2DP Source connection to addr %s.\n", bd_addr_to_str(device_addr)); 527 uint8_t status = a2dp_source_establish_stream(device_addr, media_tracker.local_seid, &media_tracker.a2dp_cid); 528 if (status != ERROR_CODE_SUCCESS){ 529 printf("Could not perform command, status 0x%2x\n", status); 530 } 531 return; 532 } 533 #endif 534 535 if (hci_event_packet_get_type(packet) == HCI_EVENT_PIN_CODE_REQUEST) { 536 bd_addr_t address; 537 printf("Pin code request - using '0000'\n"); 538 hci_event_pin_code_request_get_bd_addr(packet, address); 539 gap_pin_code_response(address, "0000"); 540 } 541 } 542 543 static void a2dp_source_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 544 UNUSED(channel); 545 UNUSED(size); 546 uint8_t status; 547 uint8_t local_seid; 548 bd_addr_t address; 549 uint16_t cid; 550 551 if (packet_type != HCI_EVENT_PACKET) return; 552 if (hci_event_packet_get_type(packet) != HCI_EVENT_A2DP_META) return; 553 554 switch (hci_event_a2dp_meta_get_subevent_code(packet)){ 555 case A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 556 a2dp_subevent_signaling_connection_established_get_bd_addr(packet, address); 557 cid = a2dp_subevent_signaling_connection_established_get_a2dp_cid(packet); 558 status = a2dp_subevent_signaling_connection_established_get_status(packet); 559 560 if (status != ERROR_CODE_SUCCESS){ 561 printf("A2DP Source: Connection failed, status 0x%02x, cid 0x%02x, a2dp_cid 0x%02x \n", status, cid, media_tracker.a2dp_cid); 562 media_tracker.a2dp_cid = 0; 563 break; 564 } 565 media_tracker.a2dp_cid = cid; 566 media_tracker.volume = 32; 567 568 printf("A2DP Source: Connected to address %s, a2dp cid 0x%02x, local seid 0x%02x.\n", bd_addr_to_str(address), media_tracker.a2dp_cid, media_tracker.local_seid); 569 break; 570 571 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 572 cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 573 if (cid != media_tracker.a2dp_cid) return; 574 575 media_tracker.remote_seid = a2dp_subevent_signaling_media_codec_sbc_configuration_get_acp_seid(packet); 576 577 sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 578 sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 579 sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 580 sbc_configuration.channel_mode = a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet); 581 sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 582 sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 583 sbc_configuration.allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 584 sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 585 sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 586 sbc_configuration.frames_per_buffer = sbc_configuration.subbands * sbc_configuration.block_length; 587 printf("A2DP Source: Received SBC codec configuration, sampling frequency %u, a2dp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x.\n", 588 sbc_configuration.sampling_frequency, cid, 589 a2dp_subevent_signaling_media_codec_sbc_configuration_get_int_seid(packet), 590 a2dp_subevent_signaling_media_codec_sbc_configuration_get_acp_seid(packet)); 591 592 // Adapt Bluetooth spec definition to SBC Encoder expected input 593 sbc_configuration.allocation_method -= 1; 594 sbc_configuration.num_channels = 2; 595 switch (sbc_configuration.channel_mode){ 596 case AVDTP_SBC_JOINT_STEREO: 597 sbc_configuration.channel_mode = 3; 598 break; 599 case AVDTP_SBC_STEREO: 600 sbc_configuration.channel_mode = 2; 601 break; 602 case AVDTP_SBC_DUAL_CHANNEL: 603 sbc_configuration.channel_mode = 1; 604 break; 605 case AVDTP_SBC_MONO: 606 sbc_configuration.channel_mode = 0; 607 sbc_configuration.num_channels = 1; 608 break; 609 } 610 dump_sbc_configuration(&sbc_configuration); 611 612 btstack_sbc_encoder_init(&sbc_encoder_state, SBC_MODE_STANDARD, 613 sbc_configuration.block_length, sbc_configuration.subbands, 614 sbc_configuration.allocation_method, sbc_configuration.sampling_frequency, 615 sbc_configuration.max_bitpool_value, 616 sbc_configuration.channel_mode); 617 break; 618 } 619 620 case A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 621 printf("A2DP Source: remote supports delay report, remote seid %d\n", 622 avdtp_subevent_signaling_delay_reporting_capability_get_remote_seid(packet)); 623 break; 624 case A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 625 printf("A2DP Source: All capabilities reported, remote seid %d\n", 626 avdtp_subevent_signaling_capabilities_done_get_remote_seid(packet)); 627 break; 628 629 case A2DP_SUBEVENT_SIGNALING_DELAY_REPORT: 630 printf("A2DP Source: Received delay report of %d.%0d ms, local seid %d\n", 631 avdtp_subevent_signaling_delay_report_get_delay_100us(packet)/10, avdtp_subevent_signaling_delay_report_get_delay_100us(packet)%10, 632 avdtp_subevent_signaling_delay_report_get_local_seid(packet)); 633 break; 634 635 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 636 a2dp_subevent_stream_established_get_bd_addr(packet, address); 637 status = a2dp_subevent_stream_established_get_status(packet); 638 if (status){ 639 printf("A2DP Source: Stream failed, status 0x%02x.\n", status); 640 break; 641 } 642 643 local_seid = a2dp_subevent_stream_established_get_local_seid(packet); 644 cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 645 646 printf("A2DP Source: Stream established a2dp_cid 0x%02x, local_seid 0x%02x, remote_seid 0x%02x\n", cid, local_seid, a2dp_subevent_stream_established_get_remote_seid(packet)); 647 648 a2dp_demo_hexcmod_configure_sample_rate(current_sample_rate); 649 media_tracker.stream_opened = 1; 650 data_source = STREAM_MOD; 651 status = a2dp_source_start_stream(media_tracker.a2dp_cid, media_tracker.local_seid); 652 break; 653 654 case A2DP_SUBEVENT_STREAM_RECONFIGURED: 655 status = a2dp_subevent_stream_reconfigured_get_status(packet); 656 local_seid = a2dp_subevent_stream_reconfigured_get_local_seid(packet); 657 cid = a2dp_subevent_stream_reconfigured_get_a2dp_cid(packet); 658 659 if (status != ERROR_CODE_SUCCESS){ 660 printf("A2DP Source: Stream reconfiguration failed with status 0x%02x\n", status); 661 break; 662 } 663 664 printf("A2DP Source: Stream reconfigured a2dp_cid 0x%02x, local_seid 0x%02x\n", cid, local_seid); 665 a2dp_demo_hexcmod_configure_sample_rate(new_sample_rate); 666 status = a2dp_source_start_stream(media_tracker.a2dp_cid, media_tracker.local_seid); 667 break; 668 669 case A2DP_SUBEVENT_STREAM_STARTED: 670 local_seid = a2dp_subevent_stream_started_get_local_seid(packet); 671 cid = a2dp_subevent_stream_started_get_a2dp_cid(packet); 672 673 play_info.status = AVRCP_PLAYBACK_STATUS_PLAYING; 674 if (media_tracker.avrcp_cid){ 675 avrcp_target_set_now_playing_info(media_tracker.avrcp_cid, &tracks[data_source], sizeof(tracks)/sizeof(avrcp_track_t)); 676 avrcp_target_set_playback_status(media_tracker.avrcp_cid, AVRCP_PLAYBACK_STATUS_PLAYING); 677 } 678 a2dp_demo_timer_start(&media_tracker); 679 printf("A2DP Source: Stream started, a2dp_cid 0x%02x, local_seid 0x%02x\n", cid, local_seid); 680 break; 681 682 case A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 683 local_seid = a2dp_subevent_streaming_can_send_media_packet_now_get_local_seid(packet); 684 cid = a2dp_subevent_signaling_media_codec_sbc_configuration_get_a2dp_cid(packet); 685 a2dp_demo_send_media_packet(); 686 break; 687 688 case A2DP_SUBEVENT_STREAM_SUSPENDED: 689 local_seid = a2dp_subevent_stream_suspended_get_local_seid(packet); 690 cid = a2dp_subevent_stream_suspended_get_a2dp_cid(packet); 691 692 play_info.status = AVRCP_PLAYBACK_STATUS_PAUSED; 693 if (media_tracker.avrcp_cid){ 694 avrcp_target_set_playback_status(media_tracker.avrcp_cid, AVRCP_PLAYBACK_STATUS_PAUSED); 695 } 696 printf("A2DP Source: Stream paused, a2dp_cid 0x%02x, local_seid 0x%02x\n", cid, local_seid); 697 698 a2dp_demo_timer_stop(&media_tracker); 699 break; 700 701 case A2DP_SUBEVENT_STREAM_RELEASED: 702 play_info.status = AVRCP_PLAYBACK_STATUS_STOPPED; 703 cid = a2dp_subevent_stream_released_get_a2dp_cid(packet); 704 local_seid = a2dp_subevent_stream_released_get_local_seid(packet); 705 706 printf("A2DP Source: Stream released, a2dp_cid 0x%02x, local_seid 0x%02x\n", cid, local_seid); 707 708 if (cid == media_tracker.a2dp_cid) { 709 media_tracker.stream_opened = 0; 710 printf("A2DP Source: Stream released.\n"); 711 } 712 if (media_tracker.avrcp_cid){ 713 avrcp_target_set_now_playing_info(media_tracker.avrcp_cid, NULL, sizeof(tracks)/sizeof(avrcp_track_t)); 714 avrcp_target_set_playback_status(media_tracker.avrcp_cid, AVRCP_PLAYBACK_STATUS_STOPPED); 715 } 716 a2dp_demo_timer_stop(&media_tracker); 717 break; 718 case A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 719 cid = a2dp_subevent_signaling_connection_released_get_a2dp_cid(packet); 720 if (cid == media_tracker.a2dp_cid) { 721 media_tracker.avrcp_cid = 0; 722 media_tracker.a2dp_cid = 0; 723 printf("A2DP Source: Signaling released.\n\n"); 724 } 725 break; 726 default: 727 break; 728 } 729 } 730 731 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 732 UNUSED(channel); 733 UNUSED(size); 734 bd_addr_t event_addr; 735 uint16_t local_cid; 736 uint8_t status = ERROR_CODE_SUCCESS; 737 738 if (packet_type != HCI_EVENT_PACKET) return; 739 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 740 741 switch (packet[2]){ 742 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: 743 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 744 status = avrcp_subevent_connection_established_get_status(packet); 745 if (status != ERROR_CODE_SUCCESS){ 746 printf("AVRCP: Connection failed, local cid 0x%02x, status 0x%02x\n", local_cid, status); 747 return; 748 } 749 media_tracker.avrcp_cid = local_cid; 750 avrcp_subevent_connection_established_get_bd_addr(packet, event_addr); 751 752 avrcp_target_set_now_playing_info(media_tracker.avrcp_cid, NULL, sizeof(tracks)/sizeof(avrcp_track_t)); 753 avrcp_target_set_unit_info(media_tracker.avrcp_cid, AVRCP_SUBUNIT_TYPE_AUDIO, company_id); 754 avrcp_target_set_subunit_info(media_tracker.avrcp_cid, AVRCP_SUBUNIT_TYPE_AUDIO, (uint8_t *)subunit_info, sizeof(subunit_info)); 755 756 avrcp_controller_get_supported_events(media_tracker.avrcp_cid); 757 758 printf("AVRCP: Channel successfully opened: media_tracker.avrcp_cid 0x%02x\n", media_tracker.avrcp_cid); 759 return; 760 761 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 762 printf("AVRCP Target: Disconnected, avrcp_cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 763 media_tracker.avrcp_cid = 0; 764 return; 765 default: 766 break; 767 } 768 769 if (status != ERROR_CODE_SUCCESS){ 770 printf("Responding to event 0x%02x failed with status 0x%02x\n", packet[2], status); 771 } 772 } 773 774 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 775 UNUSED(channel); 776 UNUSED(size); 777 uint8_t status = ERROR_CODE_SUCCESS; 778 779 if (packet_type != HCI_EVENT_PACKET) return; 780 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 781 782 switch (packet[2]){ 783 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 784 media_tracker.volume = avrcp_subevent_notification_volume_changed_get_absolute_volume(packet); 785 printf("AVRCP Target: Volume set to %d%% (%d)\n", media_tracker.volume * 127/100, media_tracker.volume); 786 break; 787 case AVRCP_SUBEVENT_EVENT_IDS_QUERY: 788 status = avrcp_target_supported_events(media_tracker.avrcp_cid, events_num, events, sizeof(events)); 789 break; 790 case AVRCP_SUBEVENT_COMPANY_IDS_QUERY: 791 status = avrcp_target_supported_companies(media_tracker.avrcp_cid, companies_num, companies, sizeof(companies)); 792 break; 793 case AVRCP_SUBEVENT_PLAY_STATUS_QUERY: 794 status = avrcp_target_play_status(media_tracker.avrcp_cid, play_info.song_length_ms, play_info.song_position_ms, play_info.status); 795 break; 796 // case AVRCP_SUBEVENT_NOW_PLAYING_INFO_QUERY: 797 // status = avrcp_target_now_playing_info(avrcp_cid); 798 // break; 799 case AVRCP_SUBEVENT_OPERATION:{ 800 avrcp_operation_id_t operation_id = avrcp_subevent_operation_get_operation_id(packet); 801 switch (operation_id){ 802 case AVRCP_OPERATION_ID_PLAY: 803 printf("AVRCP Target: PLAY\n"); 804 status = a2dp_source_start_stream(media_tracker.a2dp_cid, media_tracker.local_seid); 805 break; 806 case AVRCP_OPERATION_ID_PAUSE: 807 printf("AVRCP Target: PAUSE\n"); 808 status = a2dp_source_pause_stream(media_tracker.a2dp_cid, media_tracker.local_seid); 809 break; 810 case AVRCP_OPERATION_ID_STOP: 811 printf("AVRCP Target: STOP\n"); 812 status = a2dp_source_disconnect(media_tracker.a2dp_cid); 813 break; 814 default: 815 printf("AVRCP Target: operation 0x%2x is not handled\n", operation_id); 816 return; 817 } 818 break; 819 } 820 821 default: 822 break; 823 } 824 825 if (status != ERROR_CODE_SUCCESS){ 826 printf("Responding to event 0x%02x failed with status 0x%02x\n", packet[2], status); 827 } 828 } 829 830 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 831 UNUSED(channel); 832 UNUSED(size); 833 uint8_t status = 0xFF; 834 835 if (packet_type != HCI_EVENT_PACKET) return; 836 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 837 838 status = packet[5]; 839 if (!media_tracker.avrcp_cid) return; 840 841 // ignore INTERIM status 842 if (status == AVRCP_CTYPE_RESPONSE_INTERIM) return; 843 844 switch (packet[2]){ 845 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 846 printf("AVRCP Controller: notification absolute volume changed %d %%\n", avrcp_subevent_notification_volume_changed_get_absolute_volume(packet) * 100 / 127); 847 break; 848 case AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID: 849 printf("Remote supports EVENT_ID 0x%02x\n", avrcp_subevent_get_capability_event_id_get_event_id(packet)); 850 break; 851 case AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID_DONE: 852 printf("automatically enable notifications\n"); 853 avrcp_controller_enable_notification(media_tracker.avrcp_cid, AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED); 854 break; 855 default: 856 break; 857 } 858 } 859 860 #ifdef HAVE_BTSTACK_STDIN 861 static void show_usage(void){ 862 bd_addr_t iut_address; 863 gap_local_bd_addr(iut_address); 864 printf("\n--- Bluetooth A2DP Source/AVRCP Demo %s ---\n", bd_addr_to_str(iut_address)); 865 printf("b - A2DP Source create connection to addr %s\n", device_addr_string); 866 printf("B - A2DP Source disconnect\n"); 867 printf("c - AVRCP create connection to addr %s\n", device_addr_string); 868 printf("C - AVRCP disconnect\n"); 869 870 printf("x - start streaming sine\n"); 871 if (hxcmod_initialized){ 872 printf("z - start streaming '%s'\n", mod_name); 873 } 874 printf("p - pause streaming\n"); 875 printf("w - reconfigure stream for 44100 Hz\n"); 876 printf("e - reconfigure stream for 48000 Hz\n"); 877 printf("t - volume up\n"); 878 printf("T - volume down\n"); 879 printf("v - volume up (via set absolute volume)\n"); 880 printf("V - volume down (via set absolute volume)\n"); 881 882 printf("---\n"); 883 } 884 885 static void stdin_process(char cmd){ 886 uint8_t status = ERROR_CODE_SUCCESS; 887 switch (cmd){ 888 case 'b': 889 status = a2dp_source_establish_stream(device_addr, media_tracker.local_seid, &media_tracker.a2dp_cid); 890 printf("%c - Create A2DP Source connection to addr %s, cid 0x%02x.\n", cmd, bd_addr_to_str(device_addr), media_tracker.a2dp_cid); 891 break; 892 case 'B': 893 printf("%c - A2DP Source Disconnect from cid 0x%2x\n", cmd, media_tracker.a2dp_cid); 894 status = a2dp_source_disconnect(media_tracker.a2dp_cid); 895 break; 896 case 'c': 897 printf("%c - Create AVRCP connection to addr %s.\n", cmd, bd_addr_to_str(device_addr)); 898 status = avrcp_connect(device_addr, &media_tracker.avrcp_cid); 899 break; 900 case 'C': 901 printf("%c - AVRCP disconnect\n", cmd); 902 status = avrcp_disconnect(media_tracker.avrcp_cid); 903 break; 904 905 case '\n': 906 case '\r': 907 break; 908 909 case 't': 910 printf(" - volume up\n"); 911 status = avrcp_controller_volume_up(media_tracker.avrcp_cid); 912 break; 913 case 'T': 914 printf(" - volume down\n"); 915 status = avrcp_controller_volume_down(media_tracker.avrcp_cid); 916 break; 917 918 case 'v': 919 if (media_tracker.volume > 117){ 920 media_tracker.volume = 127; 921 } else { 922 media_tracker.volume += 10; 923 } 924 printf(" - volume up (via set absolute volume) %d%% (%d)\n", media_tracker.volume * 127/100, media_tracker.volume); 925 status = avrcp_controller_set_absolute_volume(media_tracker.avrcp_cid, media_tracker.volume); 926 break; 927 case 'V': 928 if (media_tracker.volume < 10){ 929 media_tracker.volume = 0; 930 } else { 931 media_tracker.volume -= 10; 932 } 933 printf(" - volume down (via set absolute volume) %d%% (%d)\n", media_tracker.volume * 127/100, media_tracker.volume); 934 status = avrcp_controller_set_absolute_volume(media_tracker.avrcp_cid, media_tracker.volume); 935 break; 936 937 case 'x': 938 if (media_tracker.avrcp_cid){ 939 avrcp_target_set_now_playing_info(media_tracker.avrcp_cid, &tracks[data_source], sizeof(tracks)/sizeof(avrcp_track_t)); 940 } 941 printf("%c - Play sine.\n", cmd); 942 data_source = STREAM_SINE; 943 if (!media_tracker.stream_opened) break; 944 status = a2dp_source_start_stream(media_tracker.a2dp_cid, media_tracker.local_seid); 945 break; 946 case 'z': 947 if (media_tracker.avrcp_cid){ 948 avrcp_target_set_now_playing_info(media_tracker.avrcp_cid, &tracks[data_source], sizeof(tracks)/sizeof(avrcp_track_t)); 949 } 950 printf("%c - Play mod.\n", cmd); 951 data_source = STREAM_MOD; 952 if (!media_tracker.stream_opened) break; 953 status = a2dp_source_start_stream(media_tracker.a2dp_cid, media_tracker.local_seid); 954 break; 955 956 case 'p': 957 if (!media_tracker.stream_opened) break; 958 printf("%c - Pause stream.\n", cmd); 959 status = a2dp_source_pause_stream(media_tracker.a2dp_cid, media_tracker.local_seid); 960 break; 961 962 case 'w': 963 if (!media_tracker.stream_opened) break; 964 if (play_info.status == AVRCP_PLAYBACK_STATUS_PLAYING){ 965 printf("Stream cannot be reconfigured while playing, please pause stream first\n"); 966 break; 967 } 968 new_sample_rate = 44100; 969 if (current_sample_rate == new_sample_rate){ 970 printf("%c - Stream already configured for %d Hz.\n", cmd, new_sample_rate); 971 } else { 972 printf("%c - Reconfigure for %d Hz.\n", cmd, new_sample_rate); 973 status = a2dp_source_reconfigure_stream_sampling_frequency(media_tracker.a2dp_cid, new_sample_rate); 974 } 975 break; 976 977 case 'e': 978 if (!media_tracker.stream_opened) break; 979 if (play_info.status == AVRCP_PLAYBACK_STATUS_PLAYING){ 980 printf("Stream cannot be reconfigured while playing, please pause stream first\n"); 981 break; 982 } 983 new_sample_rate = 48000; 984 if (current_sample_rate == new_sample_rate){ 985 printf("%c - Stream already configured for %d Hz.\n", cmd, new_sample_rate); 986 } else { 987 printf("%c - Reconfigure for %d Hz.\n", cmd, new_sample_rate); 988 status = a2dp_source_reconfigure_stream_sampling_frequency(media_tracker.a2dp_cid, new_sample_rate); 989 } 990 break; 991 992 default: 993 show_usage(); 994 return; 995 } 996 if (status != ERROR_CODE_SUCCESS){ 997 printf("Could not perform command \'%c\', status 0x%02x\n", cmd, status); 998 } 999 } 1000 #endif 1001 1002 1003 int btstack_main(int argc, const char * argv[]); 1004 int btstack_main(int argc, const char * argv[]){ 1005 (void)argc; 1006 (void)argv; 1007 1008 int err = a2dp_source_and_avrcp_services_init(); 1009 if (err) return err; 1010 // turn on! 1011 hci_power_control(HCI_POWER_ON); 1012 return 0; 1013 } 1014 /* EXAMPLE_END */ 1015