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