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_sink_demo.c" 39 40 /* 41 * a2dp_sink_demo.c 42 */ 43 44 // ***************************************************************************** 45 /* EXAMPLE_START(a2dp_sink_demo): A2DP Sink - Receive Audio Stream and Control Playback 46 * 47 * @text This A2DP Sink example demonstrates how to use the A2DP Sink service to 48 * receive an audio data stream from a remote A2DP Source device. In addition, 49 * the AVRCP Controller is used to get information on currently played media, 50 * such are title, artist and album, as well as to control the playback, 51 * i.e. to play, stop, repeat, etc. If HAVE_BTSTACK_STDIN is set, press SPACE on 52 * the console to show the available AVDTP and AVRCP commands. 53 * 54 * @text To test with a remote device, e.g. a mobile phone, 55 * pair from the remote device with the demo, then start playing music on the remote device. 56 * Alternatively, set the device_addr_string to the Bluetooth address of your 57 * remote device in the code, and call connect from the UI. 58 * 59 * @text For more info on BTstack audio, see our blog post 60 * [A2DP Sink and Source on STM32 F4 Discovery Board](http://bluekitchen-gmbh.com/a2dp-sink-and-source-on-stm32-f4-discovery-board/). 61 * 62 */ 63 // ***************************************************************************** 64 65 #include <inttypes.h> 66 #include <stdint.h> 67 #include <stdio.h> 68 #include <stdlib.h> 69 #include <string.h> 70 71 #include "btstack.h" 72 #include "btstack_resample.h" 73 74 //#define AVRCP_BROWSING_ENABLED 75 76 // if volume control not supported by btstack_audio_sink, you can try to disable volume change notification 77 // to force the A2DP Source to reduce volume by attenuating the audio stream 78 #define SUPPORT_VOLUME_CHANGE_NOTIFICATION 79 80 #ifdef HAVE_BTSTACK_STDIN 81 #include "btstack_stdin.h" 82 #endif 83 84 #include "btstack_ring_buffer.h" 85 86 #ifdef HAVE_POSIX_FILE_IO 87 #include "wav_util.h" 88 #define STORE_TO_SBC_FILE 89 #define STORE_TO_WAV_FILE 90 #endif 91 92 #define NUM_CHANNELS 2 93 #define BYTES_PER_FRAME (2*NUM_CHANNELS) 94 #define MAX_SBC_FRAME_SIZE 120 95 96 // SBC Decoder for WAV file or live playback 97 static btstack_sbc_decoder_state_t state; 98 static btstack_sbc_mode_t mode = SBC_MODE_STANDARD; 99 100 // ring buffer for SBC Frames 101 // below 30: add samples, 30-40: fine, above 40: drop samples 102 #define OPTIMAL_FRAMES_MIN 30 103 #define OPTIMAL_FRAMES_MAX 40 104 #define ADDITIONAL_FRAMES 20 105 static uint8_t sbc_frame_storage[(OPTIMAL_FRAMES_MAX + ADDITIONAL_FRAMES) * MAX_SBC_FRAME_SIZE]; 106 static btstack_ring_buffer_t sbc_frame_ring_buffer; 107 static unsigned int sbc_frame_size; 108 109 // rest buffer for not fully used sbc frames, with additional frames for resampling 110 static uint8_t decoded_audio_storage[(128+16) * BYTES_PER_FRAME]; 111 static btstack_ring_buffer_t decoded_audio_ring_buffer; 112 113 static int audio_stream_started; 114 115 // temp storage of lower-layer request 116 static int16_t * request_buffer; 117 static int request_frames; 118 119 #define STORE_FROM_PLAYBACK 120 121 // WAV File 122 #ifdef STORE_TO_WAV_FILE 123 static uint32_t audio_frame_count = 0; 124 static char * wav_filename = "av2dp_sink_demo.wav"; 125 #endif 126 127 #ifdef STORE_TO_SBC_FILE 128 static FILE * sbc_file; 129 static char * sbc_filename = "av2dp_sink_demo.sbc"; 130 #endif 131 132 typedef struct { 133 int reconfigure; 134 135 int num_channels; 136 int sampling_frequency; 137 int block_length; 138 int subbands; 139 int min_bitpool_value; 140 int max_bitpool_value; 141 btstack_sbc_channel_mode_t channel_mode; 142 btstack_sbc_allocation_method_t allocation_method; 143 } media_codec_configuration_sbc_t; 144 145 static media_codec_configuration_sbc_t sbc_configuration; 146 static int volume_percentage = 0; 147 148 #ifdef SUPPORT_VOLUME_CHANGE_NOTIFICATION 149 static uint8_t events_num = 3; 150 static uint8_t events[] = { 151 AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED, 152 AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED, 153 AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED 154 }; 155 #endif 156 157 static uint8_t companies_num = 1; 158 static uint8_t companies[] = { 159 0x00, 0x19, 0x58 //BT SIG registered CompanyID 160 }; 161 162 #ifdef HAVE_BTSTACK_STDIN 163 // pts: 164 static const char * device_addr_string = "6C:72:E7:10:22:EE"; 165 // mac 2013: static const char * device_addr_string = "84:38:35:65:d1:15"; 166 // iPhone 5S: static const char * device_addr_string = "54:E4:3A:26:A2:39"; 167 static bd_addr_t device_addr; 168 #endif 169 170 static btstack_packet_callback_registration_t hci_event_callback_registration; 171 172 static uint8_t sdp_avdtp_sink_service_buffer[150]; 173 static uint8_t sdp_avrcp_target_service_buffer[150]; 174 static uint8_t sdp_avrcp_controller_service_buffer[200]; 175 static uint8_t device_id_sdp_service_buffer[100]; 176 177 static uint16_t a2dp_cid = 0; 178 static uint8_t a2dp_local_seid = 0; 179 180 static uint16_t avrcp_cid = 0; 181 static uint8_t avrcp_connected = 0; 182 static uint8_t avrcp_subevent_value[100]; 183 184 static uint8_t media_sbc_codec_capabilities[] = { 185 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 186 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 187 2, 53 188 }; 189 190 static uint8_t media_sbc_codec_configuration[4]; 191 192 static int media_initialized = 0; 193 static btstack_resample_t resample_instance; 194 195 /* @section Main Application Setup 196 * 197 * @text The Listing MainConfiguration shows how to setup AD2P Sink and AVRCP services. 198 * Besides calling init() method for each service, you'll also need to register several packet handlers: 199 * - hci_packet_handler - handles legacy pairing, here by using fixed '0000' pin code. 200 * - a2dp_sink_packet_handler - handles events on stream connection status (established, released), the media codec configuration, and, the status of the stream itself (opened, paused, stopped). 201 * - handle_l2cap_media_data_packet - used to receive streaming data. If STORE_TO_WAV_FILE directive (check btstack_config.h) is used, the SBC decoder will be used to decode the SBC data into PCM frames. The resulting PCM frames are then processed in the SBC Decoder callback. 202 * - avrcp_packet_handler - receives connect/disconnect event. 203 * - avrcp_controller_packet_handler - receives answers for sent AVRCP commands. 204 * - avrcp_target_packet_handler - receives AVRCP commands, and registered notifications. 205 * - 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. 206 * 207 * @text To announce A2DP Sink and AVRCP services, you need to create corresponding 208 * SDP records and register them with the SDP service. 209 * 210 * @text Note, currently only the SBC codec is supported. 211 * If you want to store the audio data in a file, you'll need to define STORE_TO_WAV_FILE. 212 * If STORE_TO_WAV_FILE directive is defined, the SBC decoder needs to get initialized when a2dp_sink_packet_handler receives event A2DP_SUBEVENT_STREAM_STARTED. 213 * The initialization of the SBC decoder requires a callback that handles PCM data: 214 * - handle_pcm_data - handles PCM audio frames. Here, they are stored a in wav file if STORE_TO_WAV_FILE is defined, and/or played using the audio library. 215 */ 216 217 /* LISTING_START(MainConfiguration): Setup Audio Sink and AVRCP services */ 218 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 219 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size); 220 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size); 221 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 222 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 223 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 224 #ifdef HAVE_BTSTACK_STDIN 225 static void stdin_process(char cmd); 226 #endif 227 228 static int a2dp_and_avrcp_setup(void){ 229 l2cap_init(); 230 // Initialize AVDTP Sink 231 a2dp_sink_init(); 232 a2dp_sink_register_packet_handler(&a2dp_sink_packet_handler); 233 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 234 235 // Create stream endpoint 236 avdtp_stream_endpoint_t * local_stream_endpoint = a2dp_sink_create_stream_endpoint(AVDTP_AUDIO, 237 AVDTP_CODEC_SBC, media_sbc_codec_capabilities, sizeof(media_sbc_codec_capabilities), 238 media_sbc_codec_configuration, sizeof(media_sbc_codec_configuration)); 239 if (!local_stream_endpoint){ 240 printf("A2DP Sink: not enough memory to create local stream endpoint\n"); 241 return 1; 242 } 243 244 // Store stream enpoint's SEP ID, as it is used by A2DP API to indentify the stream endpoint 245 a2dp_local_seid = avdtp_local_seid(local_stream_endpoint); 246 247 // Initialize AVRCP service 248 avrcp_init(); 249 avrcp_register_packet_handler(&avrcp_packet_handler); 250 251 // Initialize AVRCP Controller 252 avrcp_controller_init(); 253 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 254 255 // Initialize AVRCP Target 256 avrcp_target_init(); 257 avrcp_target_register_packet_handler(&avrcp_target_packet_handler); 258 259 // Initialize SDP 260 sdp_init(); 261 262 // Create A2DP Sink service record and register it with SDP 263 memset(sdp_avdtp_sink_service_buffer, 0, sizeof(sdp_avdtp_sink_service_buffer)); 264 a2dp_sink_create_sdp_record(sdp_avdtp_sink_service_buffer, 0x10001, AVDTP_SINK_FEATURE_MASK_HEADPHONE, NULL, NULL); 265 sdp_register_service(sdp_avdtp_sink_service_buffer); 266 267 // Create AVRCP Controller service record and register it with SDP. We send Category 1 commands to the media player, e.g. play/pause 268 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 269 uint16_t controller_supported_features = AVRCP_FEATURE_MASK_CATEGORY_PLAYER_OR_RECORDER; 270 #ifdef AVRCP_BROWSING_ENABLED 271 controller_supported_features |= AVRCP_FEATURE_MASK_BROWSING; 272 #endif 273 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10002, controller_supported_features, NULL, NULL); 274 sdp_register_service(sdp_avrcp_controller_service_buffer); 275 276 // Create AVRCP Target service record and register it with SDP. We receive Category 2 commands from the media player, e.g. volume up/down 277 memset(sdp_avrcp_target_service_buffer, 0, sizeof(sdp_avrcp_target_service_buffer)); 278 uint16_t target_supported_features = AVRCP_FEATURE_MASK_CATEGORY_MONITOR_OR_AMPLIFIER; 279 avrcp_target_create_sdp_record(sdp_avrcp_target_service_buffer, 0x10003, target_supported_features, NULL, NULL); 280 sdp_register_service(sdp_avrcp_target_service_buffer); 281 282 // Create Device ID (PnP) service record and register it with SDP 283 memset(device_id_sdp_service_buffer, 0, sizeof(device_id_sdp_service_buffer)); 284 device_id_create_sdp_record(device_id_sdp_service_buffer, 0x10004, DEVICE_ID_VENDOR_ID_SOURCE_BLUETOOTH, BLUETOOTH_COMPANY_ID_BLUEKITCHEN_GMBH, 1, 1); 285 sdp_register_service(device_id_sdp_service_buffer); 286 287 // Set local name with a template Bluetooth address, that will be automatically 288 // replaced with a actual address once it is available, i.e. when BTstack boots 289 // up and starts talking to a Bluetooth module. 290 gap_set_local_name("A2DP Sink Demo 00:00:00:00:00:00"); 291 gap_discoverable_control(1); 292 gap_set_class_of_device(0x200408); 293 294 // Register for HCI events 295 hci_event_callback_registration.callback = &hci_packet_handler; 296 hci_add_event_handler(&hci_event_callback_registration); 297 298 #ifdef HAVE_POSIX_FILE_IO 299 if (!btstack_audio_sink_get_instance()){ 300 printf("No audio playback.\n"); 301 } else { 302 printf("Audio playback supported.\n"); 303 } 304 #ifdef STORE_TO_WAV_FILE 305 printf("Audio will be stored to \'%s\' file.\n", wav_filename); 306 #endif 307 #endif 308 return 0; 309 } 310 /* LISTING_END */ 311 312 static void playback_handler(int16_t * buffer, uint16_t num_audio_frames){ 313 314 #ifdef STORE_TO_WAV_FILE 315 int wav_samples = num_audio_frames * NUM_CHANNELS; 316 int16_t * wav_buffer = buffer; 317 #endif 318 319 // called from lower-layer but guaranteed to be on main thread 320 if (sbc_frame_size == 0){ 321 memset(buffer, 0, num_audio_frames * BYTES_PER_FRAME); 322 return; 323 } 324 325 // first fill from resampled audio 326 uint32_t bytes_read; 327 btstack_ring_buffer_read(&decoded_audio_ring_buffer, (uint8_t *) buffer, num_audio_frames * BYTES_PER_FRAME, &bytes_read); 328 buffer += bytes_read / NUM_CHANNELS; 329 num_audio_frames -= bytes_read / BYTES_PER_FRAME; 330 331 // then start decoding sbc frames using request_* globals 332 request_buffer = buffer; 333 request_frames = num_audio_frames; 334 while (request_frames && btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) >= sbc_frame_size){ 335 // decode frame 336 uint8_t sbc_frame[MAX_SBC_FRAME_SIZE]; 337 btstack_ring_buffer_read(&sbc_frame_ring_buffer, sbc_frame, sbc_frame_size, &bytes_read); 338 btstack_sbc_decoder_process_data(&state, 0, sbc_frame, sbc_frame_size); 339 } 340 341 #ifdef STORE_TO_WAV_FILE 342 audio_frame_count += num_audio_frames; 343 wav_writer_write_int16(wav_samples, wav_buffer); 344 #endif 345 } 346 347 static void handle_pcm_data(int16_t * data, int num_audio_frames, int num_channels, int sample_rate, void * context){ 348 UNUSED(sample_rate); 349 UNUSED(context); 350 UNUSED(num_channels); // must be stereo == 2 351 352 const btstack_audio_sink_t * audio_sink = btstack_audio_sink_get_instance(); 353 if (!audio_sink){ 354 #ifdef STORE_TO_WAV_FILE 355 audio_frame_count += num_audio_frames; 356 wav_writer_write_int16(num_audio_frames * NUM_CHANNELS, data); 357 #endif 358 return; 359 } 360 361 // resample into request buffer - add some additional space for resampling 362 int16_t output_buffer[(128+16) * NUM_CHANNELS]; // 16 * 8 * 2 363 uint32_t resampled_frames = btstack_resample_block(&resample_instance, data, num_audio_frames, output_buffer); 364 365 // store data in btstack_audio buffer first 366 int frames_to_copy = btstack_min(resampled_frames, request_frames); 367 memcpy(request_buffer, output_buffer, frames_to_copy * BYTES_PER_FRAME); 368 request_frames -= frames_to_copy; 369 request_buffer += frames_to_copy * NUM_CHANNELS; 370 371 // and rest in ring buffer 372 int frames_to_store = resampled_frames - frames_to_copy; 373 if (frames_to_store){ 374 int status = btstack_ring_buffer_write(&decoded_audio_ring_buffer, (uint8_t *)&output_buffer[frames_to_copy * NUM_CHANNELS], frames_to_store * BYTES_PER_FRAME); 375 if (status){ 376 printf("Error storing samples in PCM ring buffer!!!\n"); 377 } 378 } 379 } 380 381 static int media_processing_init(media_codec_configuration_sbc_t configuration){ 382 if (media_initialized) return 0; 383 384 btstack_sbc_decoder_init(&state, mode, handle_pcm_data, NULL); 385 386 #ifdef STORE_TO_WAV_FILE 387 wav_writer_open(wav_filename, configuration.num_channels, configuration.sampling_frequency); 388 #endif 389 390 #ifdef STORE_TO_SBC_FILE 391 sbc_file = fopen(sbc_filename, "wb"); 392 #endif 393 394 btstack_ring_buffer_init(&sbc_frame_ring_buffer, sbc_frame_storage, sizeof(sbc_frame_storage)); 395 btstack_ring_buffer_init(&decoded_audio_ring_buffer, decoded_audio_storage, sizeof(decoded_audio_storage)); 396 btstack_resample_init(&resample_instance, configuration.num_channels); 397 398 // setup audio playback 399 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 400 if (audio){ 401 audio->init(NUM_CHANNELS, configuration.sampling_frequency, &playback_handler); 402 } 403 404 audio_stream_started = 0; 405 media_initialized = 1; 406 return 0; 407 } 408 409 static void media_processing_start(void){ 410 if (!media_initialized) return; 411 // setup audio playback 412 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 413 if (audio){ 414 audio->start_stream(); 415 } 416 audio_stream_started = 1; 417 } 418 419 static void media_processing_pause(void){ 420 if (!media_initialized) return; 421 // stop audio playback 422 audio_stream_started = 0; 423 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 424 if (audio){ 425 audio->stop_stream(); 426 } 427 } 428 429 static void media_processing_close(void){ 430 if (!media_initialized) return; 431 media_initialized = 0; 432 audio_stream_started = 0; 433 sbc_frame_size = 0; 434 435 #ifdef STORE_TO_WAV_FILE 436 wav_writer_close(); 437 uint32_t total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 438 439 printf("WAV Writer: Decoding done. Processed %u SBC frames:\n - %d good\n - %d bad\n", total_frames_nr, state.good_frames_nr, total_frames_nr - state.good_frames_nr); 440 printf("WAV Writer: Wrote %u audio frames to wav file: %s\n", audio_frame_count, wav_filename); 441 #endif 442 443 #ifdef STORE_TO_SBC_FILE 444 fclose(sbc_file); 445 #endif 446 447 // stop audio playback 448 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 449 if (audio){ 450 printf("close stream\n"); 451 audio->close(); 452 } 453 } 454 455 /* @section Handle Media Data Packet 456 * 457 * @text Here the audio data, are received through the handle_l2cap_media_data_packet callback. 458 * Currently, only the SBC media codec is supported. Hence, the media data consists of the media packet header and the SBC packet. 459 * The SBC frame will be stored in a ring buffer for later processing (instead of decoding it to PCM right away which would require a much larger buffer). 460 * If the audio stream wasn't started already and there are enough SBC frames in the ring buffer, start playback. 461 */ 462 463 static int read_media_data_header(uint8_t * packet, int size, int * offset, avdtp_media_packet_header_t * media_header); 464 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header); 465 466 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size){ 467 UNUSED(seid); 468 int pos = 0; 469 470 avdtp_media_packet_header_t media_header; 471 if (!read_media_data_header(packet, size, &pos, &media_header)) return; 472 473 avdtp_sbc_codec_header_t sbc_header; 474 if (!read_sbc_header(packet, size, &pos, &sbc_header)) return; 475 476 #ifdef STORE_TO_SBC_FILE 477 fwrite(packet+pos, size-pos, 1, sbc_file); 478 #endif 479 480 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 481 // process data right away if there's no audio implementation active, e.g. on posix systems to store as .wav 482 if (!audio){ 483 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 484 return; 485 } 486 487 // store sbc frame size for buffer management 488 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 489 490 int status = btstack_ring_buffer_write(&sbc_frame_ring_buffer, packet+pos, size-pos); 491 if (status){ 492 printf("Error storing samples in SBC ring buffer!!!\n"); 493 } 494 495 // decide on audio sync drift based on number of sbc frames in queue 496 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) / sbc_frame_size; 497 uint32_t resampling_factor; 498 499 // nomimal factor (fixed-point 2^16) and compensation offset 500 uint32_t nomimal_factor = 0x10000; 501 uint32_t compensation = 0x00100; 502 503 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 504 resampling_factor = nomimal_factor - compensation; // stretch samples 505 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 506 resampling_factor = nomimal_factor; // nothing to do 507 } else { 508 resampling_factor = nomimal_factor + compensation; // compress samples 509 } 510 511 btstack_resample_set_factor(&resample_instance, resampling_factor); 512 513 // start stream if enough frames buffered 514 if (!audio_stream_started && sbc_frames_in_buffer >= OPTIMAL_FRAMES_MIN){ 515 media_processing_start(); 516 } 517 } 518 519 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header){ 520 int sbc_header_len = 12; // without crc 521 int pos = *offset; 522 523 if (size - pos < sbc_header_len){ 524 printf("Not enough data to read SBC header, expected %d, received %d\n", sbc_header_len, size-pos); 525 return 0; 526 } 527 528 sbc_header->fragmentation = get_bit16(packet[pos], 7); 529 sbc_header->starting_packet = get_bit16(packet[pos], 6); 530 sbc_header->last_packet = get_bit16(packet[pos], 5); 531 sbc_header->num_frames = packet[pos] & 0x0f; 532 pos++; 533 *offset = pos; 534 return 1; 535 } 536 537 static int read_media_data_header(uint8_t *packet, int size, int *offset, avdtp_media_packet_header_t *media_header){ 538 int media_header_len = 12; // without crc 539 int pos = *offset; 540 541 if (size - pos < media_header_len){ 542 printf("Not enough data to read media packet header, expected %d, received %d\n", media_header_len, size-pos); 543 return 0; 544 } 545 546 media_header->version = packet[pos] & 0x03; 547 media_header->padding = get_bit16(packet[pos],2); 548 media_header->extension = get_bit16(packet[pos],3); 549 media_header->csrc_count = (packet[pos] >> 4) & 0x0F; 550 pos++; 551 552 media_header->marker = get_bit16(packet[pos],0); 553 media_header->payload_type = (packet[pos] >> 1) & 0x7F; 554 pos++; 555 556 media_header->sequence_number = big_endian_read_16(packet, pos); 557 pos+=2; 558 559 media_header->timestamp = big_endian_read_32(packet, pos); 560 pos+=4; 561 562 media_header->synchronization_source = big_endian_read_32(packet, pos); 563 pos+=4; 564 *offset = pos; 565 return 1; 566 } 567 568 static void dump_sbc_configuration(media_codec_configuration_sbc_t configuration){ 569 printf(" - num_channels: %d\n", configuration.num_channels); 570 printf(" - sampling_frequency: %d\n", configuration.sampling_frequency); 571 printf(" - channel_mode: %d\n", configuration.channel_mode); 572 printf(" - block_length: %d\n", configuration.block_length); 573 printf(" - subbands: %d\n", configuration.subbands); 574 printf(" - allocation_method: %d\n", configuration.allocation_method); 575 printf(" - bitpool_value [%d, %d] \n", configuration.min_bitpool_value, configuration.max_bitpool_value); 576 printf("\n"); 577 } 578 579 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 580 UNUSED(channel); 581 UNUSED(size); 582 uint16_t local_cid; 583 uint8_t status = 0xFF; 584 bd_addr_t adress; 585 586 if (packet_type != HCI_EVENT_PACKET) return; 587 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 588 switch (packet[2]){ 589 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 590 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 591 status = avrcp_subevent_connection_established_get_status(packet); 592 if (status != ERROR_CODE_SUCCESS){ 593 printf("AVRCP: Connection failed: status 0x%02x\n", status); 594 avrcp_cid = 0; 595 return; 596 } 597 598 avrcp_cid = local_cid; 599 avrcp_connected = 1; 600 avrcp_subevent_connection_established_get_bd_addr(packet, adress); 601 printf("AVRCP: Connected to %s, cid 0x%02x\n", bd_addr_to_str(adress), avrcp_cid); 602 603 // automatically enable notifications 604 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 605 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 606 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 607 return; 608 } 609 610 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 611 printf("AVRCP: Channel released: cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 612 avrcp_cid = 0; 613 avrcp_connected = 0; 614 return; 615 default: 616 break; 617 } 618 } 619 620 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 621 UNUSED(channel); 622 UNUSED(size); 623 uint8_t status = 0xFF; 624 625 if (packet_type != HCI_EVENT_PACKET) return; 626 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 627 628 status = packet[5]; 629 if (!avrcp_cid) return; 630 631 // ignore INTERIM status 632 if (status == AVRCP_CTYPE_RESPONSE_INTERIM){ 633 switch (packet[2]){ 634 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED:{ 635 uint32_t playback_position_ms = avrcp_subevent_notification_playback_pos_changed_get_playback_position_ms(packet); 636 if (playback_position_ms == AVRCP_NO_TRACK_SELECTED_PLAYBACK_POSITION_CHANGED){ 637 printf("AVRCP Controller: playback position changed, no track is selected\n"); 638 } 639 break; 640 } 641 default: 642 break; 643 } 644 return; 645 } 646 647 memset(avrcp_subevent_value, 0, sizeof(avrcp_subevent_value)); 648 switch (packet[2]){ 649 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED: 650 printf("AVRCP Controller: Playback position changed, position %d ms\n", (unsigned int) avrcp_subevent_notification_playback_pos_changed_get_playback_position_ms(packet)); 651 break; 652 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED: 653 printf("AVRCP Controller: Playback status changed %s\n", avrcp_play_status2str(avrcp_subevent_notification_playback_status_changed_get_play_status(packet))); 654 return; 655 case AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED: 656 printf("AVRCP Controller: Playing content changed\n"); 657 return; 658 case AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED: 659 printf("AVRCP Controller: Track changed\n"); 660 return; 661 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 662 printf("AVRCP Controller: Absolute volume changed %d\n", avrcp_subevent_notification_volume_changed_get_absolute_volume(packet)); 663 return; 664 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 665 printf("AVRCP Controller: Changed\n"); 666 return; 667 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 668 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 669 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 670 printf("AVRCP Controller: %s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 671 break; 672 } 673 case AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO: 674 printf("AVRCP Controller: Track: %d\n", avrcp_subevent_now_playing_track_info_get_track(packet)); 675 break; 676 677 case AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO: 678 printf("AVRCP Controller: Total Tracks: %d\n", avrcp_subevent_now_playing_total_tracks_info_get_total_tracks(packet)); 679 break; 680 681 case AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO: 682 if (avrcp_subevent_now_playing_title_info_get_value_len(packet) > 0){ 683 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_title_info_get_value(packet), avrcp_subevent_now_playing_title_info_get_value_len(packet)); 684 printf("AVRCP Controller: Title: %s\n", avrcp_subevent_value); 685 } 686 break; 687 688 case AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO: 689 if (avrcp_subevent_now_playing_artist_info_get_value_len(packet) > 0){ 690 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_artist_info_get_value(packet), avrcp_subevent_now_playing_artist_info_get_value_len(packet)); 691 printf("AVRCP Controller: Artist: %s\n", avrcp_subevent_value); 692 } 693 break; 694 695 case AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO: 696 if (avrcp_subevent_now_playing_album_info_get_value_len(packet) > 0){ 697 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_album_info_get_value(packet), avrcp_subevent_now_playing_album_info_get_value_len(packet)); 698 printf("AVRCP Controller: Album: %s\n", avrcp_subevent_value); 699 } 700 break; 701 702 case AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO: 703 if (avrcp_subevent_now_playing_genre_info_get_value_len(packet) > 0){ 704 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_genre_info_get_value(packet), avrcp_subevent_now_playing_genre_info_get_value_len(packet)); 705 printf("AVRCP Controller: Genre: %s\n", avrcp_subevent_value); 706 } 707 break; 708 709 case AVRCP_SUBEVENT_PLAY_STATUS: 710 printf("AVRCP Controller: Song length %"PRIu32" ms, Song position %"PRIu32" ms, Play status %s\n", 711 avrcp_subevent_play_status_get_song_length(packet), 712 avrcp_subevent_play_status_get_song_position(packet), 713 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 714 break; 715 716 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 717 printf("AVRCP Controller: %s complete\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 718 break; 719 720 case AVRCP_SUBEVENT_OPERATION_START: 721 printf("AVRCP Controller: %s start\n", avrcp_operation2str(avrcp_subevent_operation_start_get_operation_id(packet))); 722 break; 723 724 case AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END: 725 printf("AVRCP Controller: Track reached end\n"); 726 break; 727 728 case AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE: 729 printf("A2DP Sink : Set Player App Value %s\n", avrcp_ctype2str(avrcp_subevent_player_application_value_response_get_command_type(packet))); 730 break; 731 732 733 default: 734 printf("AVRCP Controller: Event 0x%02x is not parsed\n", packet[2]); 735 break; 736 } 737 } 738 739 static void avrcp_volume_changed(uint8_t volume){ 740 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 741 if (audio){ 742 audio->set_volume(volume); 743 } 744 } 745 746 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 747 UNUSED(channel); 748 UNUSED(size); 749 750 if (packet_type != HCI_EVENT_PACKET) return; 751 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 752 753 uint8_t volume; 754 755 switch (packet[2]){ 756 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 757 volume = avrcp_subevent_notification_volume_changed_get_absolute_volume(packet); 758 volume_percentage = volume * 100 / 127; 759 printf("AVRCP Target : Volume set to %d%% (%d)\n", volume_percentage, volume); 760 avrcp_volume_changed(volume); 761 break; 762 763 case AVRCP_SUBEVENT_EVENT_IDS_QUERY: 764 #ifdef SUPPORT_VOLUME_CHANGE_NOTIFICATION 765 avrcp_target_supported_events(avrcp_cid, events_num, events, sizeof(events)); 766 #else 767 avrcp_target_supported_events(avrcp_cid, 0, NULL, 0); 768 #endif 769 break; 770 case AVRCP_SUBEVENT_COMPANY_IDS_QUERY: 771 avrcp_target_supported_companies(avrcp_cid, companies_num, companies, sizeof(companies)); 772 break; 773 case AVRCP_SUBEVENT_OPERATION:{ 774 avrcp_operation_id_t operation_id = avrcp_subevent_operation_get_operation_id(packet); 775 switch (operation_id){ 776 case AVRCP_OPERATION_ID_PLAY: 777 printf("AVRCP Target : PLAY\n"); 778 break; 779 case AVRCP_OPERATION_ID_PAUSE: 780 printf("AVRCP Target : PAUSE\n"); 781 break; 782 case AVRCP_OPERATION_ID_STOP: 783 printf("AVRCP Target : STOP\n"); 784 break; 785 case AVRCP_OPERATION_ID_REWIND: 786 printf("AVRCP Target : REWIND\n"); 787 break; 788 case AVRCP_OPERATION_ID_FAST_FORWARD: 789 printf("AVRCP Target : FAST_FORWARD\n"); 790 break; 791 case AVRCP_OPERATION_ID_FORWARD: 792 printf("AVRCP Target : FORWARD\n"); 793 break; 794 case AVRCP_OPERATION_ID_BACKWARD: 795 printf("AVRCP Target : BACKWARD\n"); 796 break; 797 case AVRCP_OPERATION_ID_SKIP: 798 printf("AVRCP Target : SKIP\n"); 799 break; 800 case AVRCP_OPERATION_ID_MUTE: 801 printf("AVRCP Target : MUTE\n"); 802 break; 803 case AVRCP_OPERATION_ID_CHANNEL_UP: 804 printf("AVRCP Target : CHANNEL_UP\n"); 805 break; 806 case AVRCP_OPERATION_ID_CHANNEL_DOWN: 807 printf("AVRCP Target : CHANNEL_DOWN\n"); 808 break; 809 case AVRCP_OPERATION_ID_SELECT: 810 printf("AVRCP Target : SELECT\n"); 811 break; 812 case AVRCP_OPERATION_ID_UP: 813 printf("AVRCP Target : UP\n"); 814 break; 815 case AVRCP_OPERATION_ID_DOWN: 816 printf("AVRCP Target : DOWN\n"); 817 break; 818 case AVRCP_OPERATION_ID_LEFT: 819 printf("AVRCP Target : LEFT\n"); 820 break; 821 case AVRCP_OPERATION_ID_RIGHT: 822 printf("AVRCP Target : RIGTH\n"); 823 break; 824 case AVRCP_OPERATION_ID_ROOT_MENU: 825 printf("AVRCP Target : ROOT_MENU\n"); 826 break; 827 default: 828 return; 829 } 830 break; 831 } 832 default: 833 printf("AVRCP Target : Event 0x%02x is not parsed\n", packet[2]); 834 break; 835 } 836 } 837 838 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 839 UNUSED(channel); 840 UNUSED(size); 841 if (packet_type != HCI_EVENT_PACKET) return; 842 if (hci_event_packet_get_type(packet) == HCI_EVENT_PIN_CODE_REQUEST) { 843 bd_addr_t address; 844 printf("Pin code request - using '0000'\n"); 845 hci_event_pin_code_request_get_bd_addr(packet, address); 846 gap_pin_code_response(address, "0000"); 847 } 848 } 849 850 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 851 UNUSED(channel); 852 UNUSED(size); 853 bd_addr_t address; 854 uint8_t status; 855 856 uint8_t channel_mode; 857 uint8_t allocation_method; 858 859 if (packet_type != HCI_EVENT_PACKET) return; 860 if (hci_event_packet_get_type(packet) != HCI_EVENT_A2DP_META) return; 861 862 switch (packet[2]){ 863 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 864 printf("A2DP Sink : Received non SBC codec - not implemented\n"); 865 break; 866 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 867 printf("A2DP Sink : Received SBC codec configuration\n"); 868 sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 869 sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 870 sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 871 sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 872 sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 873 sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 874 sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 875 876 allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 877 channel_mode = a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet); 878 879 // Adapt Bluetooth spec definition to SBC Encoder expected input 880 sbc_configuration.allocation_method = (btstack_sbc_allocation_method_t)(allocation_method - 1); 881 sbc_configuration.num_channels = SBC_CHANNEL_MODE_STEREO; 882 switch (channel_mode){ 883 case AVDTP_SBC_JOINT_STEREO: 884 sbc_configuration.channel_mode = SBC_CHANNEL_MODE_JOINT_STEREO; 885 break; 886 case AVDTP_SBC_STEREO: 887 sbc_configuration.channel_mode = SBC_CHANNEL_MODE_STEREO; 888 break; 889 case AVDTP_SBC_DUAL_CHANNEL: 890 sbc_configuration.channel_mode = SBC_CHANNEL_MODE_DUAL_CHANNEL; 891 break; 892 case AVDTP_SBC_MONO: 893 sbc_configuration.channel_mode = SBC_CHANNEL_MODE_MONO; 894 sbc_configuration.num_channels = 1; 895 break; 896 default: 897 btstack_assert(false); 898 break; 899 } 900 dump_sbc_configuration(sbc_configuration); 901 902 if (sbc_configuration.reconfigure){ 903 media_processing_close(); 904 } 905 // prepare media processing 906 media_processing_init(sbc_configuration); 907 break; 908 } 909 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 910 a2dp_subevent_stream_established_get_bd_addr(packet, address); 911 status = a2dp_subevent_stream_established_get_status(packet); 912 if (status){ 913 printf("A2DP Sink : Streaming connection failed, status 0x%02x\n", status); 914 break; 915 } 916 917 a2dp_cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 918 printf("A2DP Sink : Streaming connection is established, address %s, cid 0x%02X, local seid %d\n", bd_addr_to_str(address), a2dp_cid, a2dp_local_seid); 919 #ifdef HAVE_BTSTACK_STDIN 920 // use address for outgoing connections 921 memcpy(device_addr, address, 6); 922 #endif 923 break; 924 925 case A2DP_SUBEVENT_STREAM_STARTED: 926 printf("A2DP Sink : Stream started\n"); 927 // audio stream is started when buffer reaches minimal level 928 break; 929 930 case A2DP_SUBEVENT_STREAM_SUSPENDED: 931 printf("A2DP Sink : Stream paused\n"); 932 media_processing_pause(); 933 break; 934 935 case A2DP_SUBEVENT_STREAM_RELEASED: 936 printf("A2DP Sink : Stream released\n"); 937 media_processing_close(); 938 break; 939 940 case A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 941 printf("A2DP Sink : Signaling connection released\n"); 942 media_processing_close(); 943 break; 944 945 default: 946 printf("A2DP Sink : Not parsed 0x%02x\n", packet[2]); 947 break; 948 } 949 } 950 951 #ifdef HAVE_BTSTACK_STDIN 952 static void show_usage(void){ 953 bd_addr_t iut_address; 954 gap_local_bd_addr(iut_address); 955 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 956 printf("b - AVDTP Sink create connection to addr %s\n", bd_addr_to_str(device_addr)); 957 printf("B - AVDTP Sink disconnect\n"); 958 printf("c - AVRCP create connection to addr %s\n", bd_addr_to_str(device_addr)); 959 printf("C - AVRCP disconnect\n"); 960 961 printf("w - delay report\n"); 962 963 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 964 printf("O - get play status\n"); 965 printf("j - get now playing info\n"); 966 printf("k - play\n"); 967 printf("K - stop\n"); 968 printf("L - pause\n"); 969 printf("u - start fast forward\n"); 970 printf("U - stop fast forward\n"); 971 printf("n - start rewind\n"); 972 printf("N - stop rewind\n"); 973 printf("i - forward\n"); 974 printf("I - backward\n"); 975 printf("M - mute\n"); 976 printf("r - skip\n"); 977 printf("q - query repeat and shuffle mode\n"); 978 printf("v - repeat single track\n"); 979 printf("x - repeat all tracks\n"); 980 printf("X - disable repeat mode\n"); 981 printf("z - shuffle all tracks\n"); 982 printf("Z - disable shuffle mode\n"); 983 984 printf("a/A - register/deregister TRACK_CHANGED\n"); 985 printf("R/P - register/deregister PLAYBACK_POS_CHANGED\n"); 986 987 printf("\n--- Volume Control ---\n"); 988 printf("t - volume up for 10 percent\n"); 989 printf("T - volume down for 10 percent\n"); 990 991 printf("---\n"); 992 } 993 #endif 994 995 #ifdef HAVE_BTSTACK_STDIN 996 static void stdin_process(char cmd){ 997 uint8_t status = ERROR_CODE_SUCCESS; 998 uint8_t volume; 999 1000 switch (cmd){ 1001 case 'b': 1002 status = a2dp_sink_establish_stream(device_addr, a2dp_local_seid, &a2dp_cid); 1003 printf(" - Create AVDTP connection to addr %s, and local seid %d, expected cid 0x%02x.\n", bd_addr_to_str(device_addr), a2dp_local_seid, a2dp_cid); 1004 break; 1005 case 'B': 1006 printf(" - AVDTP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 1007 a2dp_sink_disconnect(a2dp_cid); 1008 break; 1009 case 'c': 1010 printf(" - Create AVRCP connection to addr %s.\n", bd_addr_to_str(device_addr)); 1011 status = avrcp_connect(device_addr, &avrcp_cid); 1012 break; 1013 case 'C': 1014 printf(" - AVRCP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 1015 status = avrcp_disconnect(avrcp_cid); 1016 break; 1017 1018 case '\n': 1019 case '\r': 1020 break; 1021 case 'w': 1022 printf("Send delay report\n"); 1023 avdtp_sink_delay_report(a2dp_cid, a2dp_local_seid, 100); 1024 break; 1025 // Volume Control 1026 case 't': 1027 volume_percentage = volume_percentage <= 90 ? volume_percentage + 10 : 100; 1028 volume = volume_percentage * 127 / 100; 1029 printf(" - volume up for 10 percent, %d%% (%d) \n", volume_percentage, volume); 1030 status = avrcp_target_volume_changed(avrcp_cid, volume); 1031 avrcp_volume_changed(volume); 1032 break; 1033 case 'T': 1034 volume_percentage = volume_percentage >= 10 ? volume_percentage - 10 : 0; 1035 volume = volume_percentage * 127 / 100; 1036 printf(" - volume down for 10 percent, %d%% (%d) \n", volume_percentage, volume); 1037 status = avrcp_target_volume_changed(avrcp_cid, volume); 1038 avrcp_volume_changed(volume); 1039 break; 1040 1041 case 'O': 1042 printf(" - get play status\n"); 1043 status = avrcp_controller_get_play_status(avrcp_cid); 1044 break; 1045 case 'j': 1046 printf(" - get now playing info\n"); 1047 status = avrcp_controller_get_now_playing_info(avrcp_cid); 1048 break; 1049 case 'k': 1050 printf(" - play\n"); 1051 status = avrcp_controller_play(avrcp_cid); 1052 break; 1053 case 'K': 1054 printf(" - stop\n"); 1055 status = avrcp_controller_stop(avrcp_cid); 1056 break; 1057 case 'L': 1058 printf(" - pause\n"); 1059 status = avrcp_controller_pause(avrcp_cid); 1060 break; 1061 case 'u': 1062 printf(" - start fast forward\n"); 1063 status = avrcp_controller_press_and_hold_fast_forward(avrcp_cid); 1064 break; 1065 case 'U': 1066 printf(" - stop fast forward\n"); 1067 status = avrcp_controller_release_press_and_hold_cmd(avrcp_cid); 1068 break; 1069 case 'n': 1070 printf(" - start rewind\n"); 1071 status = avrcp_controller_press_and_hold_rewind(avrcp_cid); 1072 break; 1073 case 'N': 1074 printf(" - stop rewind\n"); 1075 status = avrcp_controller_release_press_and_hold_cmd(avrcp_cid); 1076 break; 1077 case 'i': 1078 printf(" - forward\n"); 1079 status = avrcp_controller_forward(avrcp_cid); 1080 break; 1081 case 'I': 1082 printf(" - backward\n"); 1083 status = avrcp_controller_backward(avrcp_cid); 1084 break; 1085 case 'M': 1086 printf(" - mute\n"); 1087 status = avrcp_controller_mute(avrcp_cid); 1088 break; 1089 case 'r': 1090 printf(" - skip\n"); 1091 status = avrcp_controller_skip(avrcp_cid); 1092 break; 1093 case 'q': 1094 printf(" - query repeat and shuffle mode\n"); 1095 status = avrcp_controller_query_shuffle_and_repeat_modes(avrcp_cid); 1096 break; 1097 case 'v': 1098 printf(" - repeat single track\n"); 1099 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 1100 break; 1101 case 'x': 1102 printf(" - repeat all tracks\n"); 1103 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 1104 break; 1105 case 'X': 1106 printf(" - disable repeat mode\n"); 1107 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_OFF); 1108 break; 1109 case 'z': 1110 printf(" - shuffle all tracks\n"); 1111 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 1112 break; 1113 case 'Z': 1114 printf(" - disable shuffle mode\n"); 1115 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_OFF); 1116 break; 1117 case 'a': 1118 printf("AVRCP: enable notification TRACK_CHANGED\n"); 1119 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 1120 break; 1121 case 'A': 1122 printf("AVRCP: disable notification TRACK_CHANGED\n"); 1123 avrcp_controller_disable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 1124 break; 1125 case 'R': 1126 printf("AVRCP: enable notification PLAYBACK_POS_CHANGED\n"); 1127 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED); 1128 break; 1129 case 'P': 1130 printf("AVRCP: disable notification PLAYBACK_POS_CHANGED\n"); 1131 avrcp_controller_disable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED); 1132 break; 1133 1134 default: 1135 show_usage(); 1136 return; 1137 } 1138 if (status != ERROR_CODE_SUCCESS){ 1139 printf("Could not perform command, status 0x%02x\n", status); 1140 } 1141 } 1142 #endif 1143 1144 int btstack_main(int argc, const char * argv[]); 1145 int btstack_main(int argc, const char * argv[]){ 1146 UNUSED(argc); 1147 (void)argv; 1148 1149 a2dp_and_avrcp_setup(); 1150 1151 #ifdef HAVE_BTSTACK_STDIN 1152 // parse human readable Bluetooth address 1153 sscanf_bd_addr(device_addr_string, device_addr); 1154 btstack_stdin_setup(stdin_process); 1155 #endif 1156 1157 // turn on! 1158 printf("Starting BTstack ...\n"); 1159 hci_power_control(HCI_POWER_ON); 1160 return 0; 1161 } 1162 /* EXAMPLE_END */ 1163