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. 52 * 53 * @test To test with a remote device, e.g. a mobile phone, 54 * pair from the remote device with the demo, then start playing music on the remote device. 55 * Alternatively, set the device_addr_string to the Bluetooth address of your 56 * remote device in the code, and call connect from the UI. 57 * 58 * @test To controll the playback, tap SPACE on the console to show the available 59 * AVRCP commands. 60 * 61 * For more info on BTstack audio, see our blog post 62 * [A2DP Sink and Source on STM32 F4 Discovery Board](http://bluekitchen-gmbh.com/a2dp-sink-and-source-on-stm32-f4-discovery-board/). 63 * 64 */ 65 // ***************************************************************************** 66 67 #include <inttypes.h> 68 #include <stdint.h> 69 #include <stdio.h> 70 #include <stdlib.h> 71 #include <string.h> 72 73 #include "btstack.h" 74 #include "btstack_resample.h" 75 76 //#define AVRCP_BROWSING_ENABLED 77 78 #ifdef HAVE_BTSTACK_STDIN 79 #include "btstack_stdin.h" 80 #endif 81 82 #include "btstack_ring_buffer.h" 83 84 #ifdef HAVE_POSIX_FILE_IO 85 #include "wav_util.h" 86 #define STORE_TO_SBC_FILE 87 #define STORE_TO_WAV_FILE 88 #endif 89 90 #define NUM_CHANNELS 2 91 #define BYTES_PER_FRAME (2*NUM_CHANNELS) 92 #define MAX_SBC_FRAME_SIZE 120 93 94 // SBC Decoder for WAV file or live playback 95 static btstack_sbc_decoder_state_t state; 96 static btstack_sbc_mode_t mode = SBC_MODE_STANDARD; 97 98 // ring buffer for SBC Frames 99 // below 30: add samples, 30-40: fine, above 40: drop samples 100 #define OPTIMAL_FRAMES_MIN 30 101 #define OPTIMAL_FRAMES_MAX 40 102 #define ADDITIONAL_FRAMES 20 103 static uint8_t sbc_frame_storage[(OPTIMAL_FRAMES_MAX + ADDITIONAL_FRAMES) * MAX_SBC_FRAME_SIZE]; 104 static btstack_ring_buffer_t sbc_frame_ring_buffer; 105 static unsigned int sbc_frame_size; 106 107 // rest buffer for not fully used sbc frames, with additional frames for resampling 108 static uint8_t decoded_audio_storage[(128+16) * BYTES_PER_FRAME]; 109 static btstack_ring_buffer_t decoded_audio_ring_buffer; 110 111 // 112 static int audio_stream_started; 113 114 // temp storage of lower-layer request 115 static int16_t * request_buffer; 116 static int request_frames; 117 118 #define STORE_FROM_PLAYBACK 119 120 // WAV File 121 #ifdef STORE_TO_WAV_FILE 122 static uint32_t audio_frame_count = 0; 123 static char * wav_filename = "av2dp_sink_demo.wav"; 124 #endif 125 126 #ifdef STORE_TO_SBC_FILE 127 static FILE * sbc_file; 128 static char * sbc_filename = "av2dp_sink_demo.sbc"; 129 #endif 130 131 static int volume_percentage = 0; 132 133 typedef struct { 134 // bitmaps 135 uint8_t sampling_frequency_bitmap; 136 uint8_t channel_mode_bitmap; 137 uint8_t block_length_bitmap; 138 uint8_t subbands_bitmap; 139 uint8_t allocation_method_bitmap; 140 uint8_t min_bitpool_value; 141 uint8_t max_bitpool_value; 142 } adtvp_media_codec_information_sbc_t; 143 144 typedef struct { 145 int reconfigure; 146 int num_channels; 147 int sampling_frequency; 148 int channel_mode; 149 int block_length; 150 int subbands; 151 int allocation_method; 152 int min_bitpool_value; 153 int max_bitpool_value; 154 int frames_per_buffer; 155 } avdtp_media_codec_configuration_sbc_t; 156 157 static uint8_t events_num = 1; 158 159 static uint8_t events[] = { 160 AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED 161 }; 162 163 static uint8_t companies_num = 1; 164 static uint8_t companies[] = { 165 0x00, 0x19, 0x58 //BT SIG registered CompanyID 166 }; 167 #ifdef HAVE_BTSTACK_STDIN 168 // pts: 169 static const char * device_addr_string = "6C:72:E7:10:22:EE"; 170 // mac 2013: static const char * device_addr_string = "84:38:35:65:d1:15"; 171 // iPhone 5S: 172 // static const char * device_addr_string = "54:E4:3A:26:A2:39"; 173 #endif 174 175 static uint8_t sdp_avdtp_sink_service_buffer[150]; 176 static uint8_t sdp_avrcp_target_service_buffer[150]; 177 static avdtp_media_codec_configuration_sbc_t sbc_configuration; 178 static uint16_t a2dp_cid = 0; 179 static uint8_t a2dp_local_seid = 0; 180 static uint8_t value[100]; 181 182 static btstack_packet_callback_registration_t hci_event_callback_registration; 183 184 static int media_initialized = 0; 185 186 #ifdef HAVE_BTSTACK_STDIN 187 static bd_addr_t device_addr; 188 #endif 189 190 static uint16_t avrcp_cid = 0; 191 static uint8_t avrcp_connected = 0; 192 static uint8_t sdp_avrcp_controller_service_buffer[200]; 193 194 static uint8_t media_sbc_codec_capabilities[] = { 195 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 196 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 197 2, 53 198 }; 199 200 static uint8_t media_sbc_codec_configuration[] = { 201 (AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 202 (AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 203 2, 53 204 }; 205 206 static btstack_resample_t resample_instance; 207 208 /* @section Main Application Setup 209 * 210 * @text The Listing MainConfiguration shows how to setup AD2P Sink and AVRCP controller services. 211 * To announce A2DP Sink and AVRCP Controller services, you need to create corresponding 212 * SDP records and register them with the SDP service. 213 * You'll also need to register several packet handlers: 214 * - 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). 215 * - 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. 216 * - stdin_process callback - used to trigger AVRCP commands to the A2DP Source device, such are get now playing info, start, stop, volume control. Requires HAVE_BTSTACK_STDIN. 217 * - avrcp_controller_packet_handler - used to receive answers for AVRCP commands, 218 * 219 * @text Note, currently only the SBC codec is supported. 220 * If you want to store the audio data in a file, you'll need to define STORE_TO_WAV_FILE. 221 * 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. 222 * The initialization of the SBC decoder requires a callback that handles PCM data: 223 * - 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. 224 */ 225 226 /* LISTING_START(MainConfiguration): Setup Audio Sink and AVRCP Controller services */ 227 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size); 228 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 229 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 230 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 231 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size); 232 233 static int a2dp_and_avrcp_setup(void){ 234 235 l2cap_init(); 236 // Initialize AVDTP Sink 237 a2dp_sink_init(); 238 a2dp_sink_register_packet_handler(&a2dp_sink_packet_handler); 239 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 240 241 avdtp_stream_endpoint_t * local_stream_endpoint = a2dp_sink_create_stream_endpoint(AVDTP_AUDIO, 242 AVDTP_CODEC_SBC, media_sbc_codec_capabilities, sizeof(media_sbc_codec_capabilities), 243 media_sbc_codec_configuration, sizeof(media_sbc_codec_configuration)); 244 if (!local_stream_endpoint){ 245 printf("A2DP Sink: not enough memory to create local stream endpoint\n"); 246 return 1; 247 } 248 a2dp_local_seid = avdtp_local_seid(local_stream_endpoint); 249 250 // Initialize AVRCP service. 251 avrcp_init(); 252 253 // Initialize AVRCP Controller 254 avrcp_controller_init(); 255 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 256 257 // Initialize AVRCP Target 258 avrcp_target_init(); 259 avrcp_target_register_packet_handler(&avrcp_target_packet_handler); 260 261 // Initialize SDP 262 sdp_init(); 263 // setup AVDTP sink 264 memset(sdp_avdtp_sink_service_buffer, 0, sizeof(sdp_avdtp_sink_service_buffer)); 265 a2dp_sink_create_sdp_record(sdp_avdtp_sink_service_buffer, 0x10001, 1, NULL, NULL); 266 sdp_register_service(sdp_avdtp_sink_service_buffer); 267 268 // setup AVRCP Controller 269 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 270 uint16_t controller_supported_features = (1 << AVRCP_CONTROLLER_SUPPORTED_FEATURE_CATEGORY_PLAYER_OR_RECORDER); 271 #ifdef AVRCP_BROWSING_ENABLED 272 controller_supported_features |= (1 << AVRCP_CONTROLLER_SUPPORTED_FEATURE_BROWSING); 273 #endif 274 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10002, controller_supported_features, NULL, NULL); 275 sdp_register_service(sdp_avrcp_controller_service_buffer); 276 277 // setup AVRCP Target 278 memset(sdp_avrcp_target_service_buffer, 0, sizeof(sdp_avrcp_target_service_buffer)); 279 uint16_t target_supported_features = (1 << AVRCP_TARGET_SUPPORTED_FEATURE_CATEGORY_MONITOR_OR_AMPLIFIER); 280 avrcp_target_create_sdp_record(sdp_avrcp_target_service_buffer, 0x10003, target_supported_features, NULL, NULL); 281 sdp_register_service(sdp_avrcp_target_service_buffer); 282 283 gap_set_local_name("A2DP Sink Demo 00:00:00:00:00:00"); 284 gap_discoverable_control(1); 285 gap_set_class_of_device(0x200408); 286 287 /* Register for HCI events */ 288 hci_event_callback_registration.callback = &hci_packet_handler; 289 hci_add_event_handler(&hci_event_callback_registration); 290 291 #ifdef HAVE_POSIX_FILE_IO 292 if (!btstack_audio_sink_get_instance()){ 293 printf("No audio playback.\n"); 294 } else { 295 printf("Audio playback supported.\n"); 296 } 297 #ifdef STORE_TO_WAV_FILE 298 printf("Audio will be stored to \'%s\' file.\n", wav_filename); 299 #endif 300 #endif 301 return 0; 302 } 303 304 static void playback_handler(int16_t * buffer, uint16_t num_audio_frames){ 305 306 #ifdef STORE_TO_WAV_FILE 307 int wav_samples = num_audio_frames * NUM_CHANNELS; 308 int16_t * wav_buffer = buffer; 309 #endif 310 311 // called from lower-layer but guaranteed to be on main thread 312 if (sbc_frame_size == 0){ 313 memset(buffer, 0, num_audio_frames * BYTES_PER_FRAME); 314 return; 315 } 316 317 // first fill from resampled audio 318 uint32_t bytes_read; 319 btstack_ring_buffer_read(&decoded_audio_ring_buffer, (uint8_t *) buffer, num_audio_frames * BYTES_PER_FRAME, &bytes_read); 320 buffer += bytes_read / NUM_CHANNELS; 321 num_audio_frames -= bytes_read / BYTES_PER_FRAME; 322 323 // then start decoding sbc frames using request_* globals 324 request_buffer = buffer; 325 request_frames = num_audio_frames; 326 while (request_frames && btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) >= sbc_frame_size){ 327 // decode frame 328 uint8_t sbc_frame[MAX_SBC_FRAME_SIZE]; 329 btstack_ring_buffer_read(&sbc_frame_ring_buffer, sbc_frame, sbc_frame_size, &bytes_read); 330 btstack_sbc_decoder_process_data(&state, 0, sbc_frame, sbc_frame_size); 331 } 332 333 #ifdef STORE_TO_WAV_FILE 334 audio_frame_count += num_audio_frames; 335 wav_writer_write_int16(wav_samples, wav_buffer); 336 #endif 337 } 338 339 static void handle_pcm_data(int16_t * data, int num_audio_frames, int num_channels, int sample_rate, void * context){ 340 UNUSED(sample_rate); 341 UNUSED(context); 342 UNUSED(num_channels); // must be stereo == 2 343 344 const btstack_audio_sink_t * audio_sink = btstack_audio_sink_get_instance(); 345 if (!audio_sink){ 346 #ifdef STORE_TO_WAV_FILE 347 audio_frame_count += num_audio_frames; 348 wav_writer_write_int16(num_audio_frames * NUM_CHANNELS, data); 349 #endif 350 return; 351 } 352 353 // resample into request buffer - add some additional space for resampling 354 int16_t output_buffer[(128+16) * NUM_CHANNELS]; // 16 * 8 * 2 355 uint32_t resampled_frames = btstack_resample_block(&resample_instance, data, num_audio_frames, output_buffer); 356 357 // store data in btstack_audio buffer first 358 int frames_to_copy = btstack_min(resampled_frames, request_frames); 359 memcpy(request_buffer, output_buffer, frames_to_copy * BYTES_PER_FRAME); 360 request_frames -= frames_to_copy; 361 request_buffer += frames_to_copy * NUM_CHANNELS; 362 363 // and rest in ring buffer 364 int frames_to_store = resampled_frames - frames_to_copy; 365 if (frames_to_store){ 366 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); 367 if (status){ 368 printf("Error storing samples in PCM ring buffer!!!\n"); 369 } 370 } 371 } 372 373 static int media_processing_init(avdtp_media_codec_configuration_sbc_t configuration){ 374 if (media_initialized) return 0; 375 376 btstack_sbc_decoder_init(&state, mode, handle_pcm_data, NULL); 377 378 #ifdef STORE_TO_WAV_FILE 379 wav_writer_open(wav_filename, configuration.num_channels, configuration.sampling_frequency); 380 #endif 381 382 #ifdef STORE_TO_SBC_FILE 383 sbc_file = fopen(sbc_filename, "wb"); 384 #endif 385 386 btstack_ring_buffer_init(&sbc_frame_ring_buffer, sbc_frame_storage, sizeof(sbc_frame_storage)); 387 btstack_ring_buffer_init(&decoded_audio_ring_buffer, decoded_audio_storage, sizeof(decoded_audio_storage)); 388 btstack_resample_init(&resample_instance, configuration.num_channels); 389 390 // setup audio playback 391 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 392 if (audio){ 393 audio->init(NUM_CHANNELS, configuration.sampling_frequency, &playback_handler); 394 } 395 396 audio_stream_started = 0; 397 media_initialized = 1; 398 return 0; 399 } 400 401 static void media_processing_start(void){ 402 if (!media_initialized) return; 403 // setup audio playback 404 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 405 if (audio){ 406 audio->start_stream(); 407 } 408 audio_stream_started = 1; 409 } 410 411 static void media_processing_pause(void){ 412 if (!media_initialized) return; 413 // stop audio playback 414 audio_stream_started = 0; 415 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 416 if (audio){ 417 audio->stop_stream(); 418 } 419 } 420 421 static void media_processing_close(void){ 422 if (!media_initialized) return; 423 media_initialized = 0; 424 audio_stream_started = 0; 425 sbc_frame_size = 0; 426 427 #ifdef STORE_TO_WAV_FILE 428 wav_writer_close(); 429 uint32_t total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 430 431 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); 432 printf("WAV Writer: Wrote %u audio frames to wav file: %s\n", audio_frame_count, wav_filename); 433 #endif 434 435 #ifdef STORE_TO_SBC_FILE 436 fclose(sbc_file); 437 #endif 438 439 // stop audio playback 440 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 441 if (audio){ 442 printf("close stream\n"); 443 audio->close(); 444 } 445 } 446 447 /* @section Handle Media Data Packet 448 * 449 * @text Media data packets, in this case the audio data, are received through the handle_l2cap_media_data_packet callback. 450 * Currently, only the SBC media codec is supported. Hence, the media data consists of the media packet header and the SBC packet. 451 * 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) 452 * If the audio stream wasn't started already and there are enough SBC frames in the ring buffer, start playback. 453 */ 454 455 static int read_media_data_header(uint8_t * packet, int size, int * offset, avdtp_media_packet_header_t * media_header); 456 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header); 457 458 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size){ 459 UNUSED(seid); 460 int pos = 0; 461 462 avdtp_media_packet_header_t media_header; 463 if (!read_media_data_header(packet, size, &pos, &media_header)) return; 464 465 avdtp_sbc_codec_header_t sbc_header; 466 if (!read_sbc_header(packet, size, &pos, &sbc_header)) return; 467 468 #ifdef STORE_TO_SBC_FILE 469 fwrite(packet+pos, size-pos, 1, sbc_file); 470 #endif 471 472 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 473 // process data right away if there's no audio implementation active, e.g. on posix systems to store as .wav 474 if (!audio){ 475 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 476 return; 477 } 478 479 // store sbc frame size for buffer management 480 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 481 482 int status = btstack_ring_buffer_write(&sbc_frame_ring_buffer, packet+pos, size-pos); 483 if (status){ 484 printf("Error storing samples in SBC ring buffer!!!\n"); 485 } 486 487 // decide on audio sync drift based on number of sbc frames in queue 488 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) / sbc_frame_size; 489 uint32_t resampling_factor; 490 491 // nomimal factor (fixed-point 2^16) and compensation offset 492 uint32_t nomimal_factor = 0x10000; 493 uint32_t compensation = 0x00100; 494 495 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 496 resampling_factor = nomimal_factor - compensation; // stretch samples 497 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 498 resampling_factor = nomimal_factor; // nothing to do 499 } else { 500 resampling_factor = nomimal_factor + compensation; // compress samples 501 } 502 503 btstack_resample_set_factor(&resample_instance, resampling_factor); 504 505 // dump 506 // printf("%6u %03u %05x\n", (int) btstack_run_loop_get_time_ms(), sbc_frames_in_buffer, resampling_factor); 507 // log_info("%03u %05x", sbc_frames_in_buffer, resampling_factor); 508 509 // start stream if enough frames buffered 510 if (!audio_stream_started && sbc_frames_in_buffer >= OPTIMAL_FRAMES_MIN){ 511 audio_stream_started = 1; 512 // setup audio playback 513 if (audio){ 514 audio->start_stream(); 515 } 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 // printf("SBC HEADER: num_frames %u, fragmented %u, start %u, stop %u\n", sbc_header.num_frames, sbc_header.fragmentation, sbc_header.starting_packet, sbc_header.last_packet); 534 *offset = pos; 535 return 1; 536 } 537 538 static int read_media_data_header(uint8_t *packet, int size, int *offset, avdtp_media_packet_header_t *media_header){ 539 int media_header_len = 12; // without crc 540 int pos = *offset; 541 542 if (size - pos < media_header_len){ 543 printf("Not enough data to read media packet header, expected %d, received %d\n", media_header_len, size-pos); 544 return 0; 545 } 546 547 media_header->version = packet[pos] & 0x03; 548 media_header->padding = get_bit16(packet[pos],2); 549 media_header->extension = get_bit16(packet[pos],3); 550 media_header->csrc_count = (packet[pos] >> 4) & 0x0F; 551 pos++; 552 553 media_header->marker = get_bit16(packet[pos],0); 554 media_header->payload_type = (packet[pos] >> 1) & 0x7F; 555 pos++; 556 557 media_header->sequence_number = big_endian_read_16(packet, pos); 558 pos+=2; 559 560 media_header->timestamp = big_endian_read_32(packet, pos); 561 pos+=4; 562 563 media_header->synchronization_source = big_endian_read_32(packet, pos); 564 pos+=4; 565 *offset = pos; 566 return 1; 567 } 568 569 static void dump_sbc_configuration(avdtp_media_codec_configuration_sbc_t configuration){ 570 printf(" - num_channels: %d\n", configuration.num_channels); 571 printf(" - sampling_frequency: %d\n", configuration.sampling_frequency); 572 printf(" - channel_mode: %d\n", configuration.channel_mode); 573 printf(" - block_length: %d\n", configuration.block_length); 574 printf(" - subbands: %d\n", configuration.subbands); 575 printf(" - allocation_method: %d\n", configuration.allocation_method); 576 printf(" - bitpool_value [%d, %d] \n", configuration.min_bitpool_value, configuration.max_bitpool_value); 577 printf("\n"); 578 } 579 580 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 581 UNUSED(channel); 582 UNUSED(size); 583 uint16_t local_cid; 584 uint8_t status = 0xFF; 585 bd_addr_t adress; 586 587 if (packet_type != HCI_EVENT_PACKET) return; 588 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 589 switch (packet[2]){ 590 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 591 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 592 if (avrcp_cid != 0 && avrcp_cid != local_cid) { 593 printf("AVRCP Controller: Connection failed, expected 0x%02X cid, received 0x%02X\n", avrcp_cid, local_cid); 594 return; 595 } 596 597 status = avrcp_subevent_connection_established_get_status(packet); 598 if (status != ERROR_CODE_SUCCESS){ 599 printf("AVRCP Controller: Connection failed: status 0x%02x\n", status); 600 avrcp_cid = 0; 601 return; 602 } 603 604 avrcp_cid = local_cid; 605 avrcp_connected = 1; 606 avrcp_subevent_connection_established_get_bd_addr(packet, adress); 607 printf("AVRCP Controller: Connected to %s, cid 0x%02x\n", bd_addr_to_str(adress), avrcp_cid); 608 609 // automatically enable notifications 610 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 611 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 612 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 613 return; 614 } 615 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 616 printf("AVRCP Controller: Channel released: cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 617 avrcp_cid = 0; 618 avrcp_connected = 0; 619 return; 620 default: 621 break; 622 } 623 624 status = packet[5]; 625 if (!avrcp_cid) return; 626 627 // ignore INTERIM status 628 if (status == AVRCP_CTYPE_RESPONSE_INTERIM){ 629 switch (packet[2]){ 630 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED:{ 631 uint32_t playback_position_ms = avrcp_subevent_notification_playback_pos_changed_get_playback_position_ms(packet); 632 if (playback_position_ms == AVRCP_NO_TRACK_SELECTED_PLAYBACK_POSITION_CHANGED){ 633 printf("AVRCP Controller: playback position changed, no track is selected\n"); 634 } 635 break; 636 } 637 default: 638 break; 639 } 640 return; 641 } 642 643 memset(value, 0, sizeof(value)); 644 switch (packet[2]){ 645 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED: 646 printf("AVRCP Controller: Playback position changed, position %d ms\n", (unsigned int) avrcp_subevent_notification_playback_pos_changed_get_playback_position_ms(packet)); 647 break; 648 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED: 649 printf("AVRCP Controller: Playback status changed %s\n", avrcp_play_status2str(avrcp_subevent_notification_playback_status_changed_get_play_status(packet))); 650 return; 651 case AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED: 652 printf("AVRCP Controller: Playing content changed\n"); 653 return; 654 case AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED: 655 printf("AVRCP Controller: Track changed\n"); 656 return; 657 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 658 printf("AVRCP Controller: Absolute volume changed %d\n", avrcp_subevent_notification_volume_changed_get_absolute_volume(packet)); 659 return; 660 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 661 printf("AVRCP Controller: Changed\n"); 662 return; 663 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 664 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 665 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 666 printf("AVRCP Controller: %s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 667 break; 668 } 669 case AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO: 670 printf("AVRCP Controller: Track: %d\n", avrcp_subevent_now_playing_track_info_get_track(packet)); 671 break; 672 673 case AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO: 674 printf("AVRCP Controller: Total Tracks: %d\n", avrcp_subevent_now_playing_total_tracks_info_get_total_tracks(packet)); 675 break; 676 677 case AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO: 678 if (avrcp_subevent_now_playing_title_info_get_value_len(packet) > 0){ 679 memcpy(value, avrcp_subevent_now_playing_title_info_get_value(packet), avrcp_subevent_now_playing_title_info_get_value_len(packet)); 680 printf("AVRCP Controller: Title: %s\n", value); 681 } 682 break; 683 684 case AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO: 685 if (avrcp_subevent_now_playing_artist_info_get_value_len(packet) > 0){ 686 memcpy(value, avrcp_subevent_now_playing_artist_info_get_value(packet), avrcp_subevent_now_playing_artist_info_get_value_len(packet)); 687 printf("AVRCP Controller: Artist: %s\n", value); 688 } 689 break; 690 691 case AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO: 692 if (avrcp_subevent_now_playing_album_info_get_value_len(packet) > 0){ 693 memcpy(value, avrcp_subevent_now_playing_album_info_get_value(packet), avrcp_subevent_now_playing_album_info_get_value_len(packet)); 694 printf("AVRCP Controller: Album: %s\n", value); 695 } 696 break; 697 698 case AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO: 699 if (avrcp_subevent_now_playing_genre_info_get_value_len(packet) > 0){ 700 memcpy(value, avrcp_subevent_now_playing_genre_info_get_value(packet), avrcp_subevent_now_playing_genre_info_get_value_len(packet)); 701 printf("AVRCP Controller: Genre: %s\n", value); 702 } 703 break; 704 705 case AVRCP_SUBEVENT_PLAY_STATUS: 706 printf("AVRCP Controller: Song length %"PRIu32" ms, Song position %"PRIu32" ms, Play status %s\n", 707 avrcp_subevent_play_status_get_song_length(packet), 708 avrcp_subevent_play_status_get_song_position(packet), 709 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 710 break; 711 712 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 713 printf("AVRCP Controller: %s done\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 714 break; 715 716 case AVRCP_SUBEVENT_OPERATION_START: 717 printf("AVRCP Controller: Start %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 718 break; 719 720 default: 721 printf("AVRCP Controller: Event 0x%02x is not parsed\n", packet[2]); 722 break; 723 } 724 } 725 726 727 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 728 UNUSED(channel); 729 UNUSED(size); 730 bd_addr_t address; 731 uint16_t local_cid; 732 uint8_t status = ERROR_CODE_SUCCESS; 733 734 if (packet_type != HCI_EVENT_PACKET) return; 735 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 736 737 int volume; 738 739 switch (packet[2]){ 740 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 741 volume = avrcp_subevent_notification_volume_changed_get_absolute_volume(packet); 742 volume_percentage = volume * 100 / 127; 743 printf("AVRCP Target : Volume set to %d%% (%d)\n", volume_percentage, volume); 744 break; 745 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: 746 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 747 if (avrcp_cid != 0 && avrcp_cid != local_cid) { 748 printf("AVRCP Target : Connection failed, expected 0x%02X cid, received 0x%02X\n", avrcp_cid, local_cid); 749 return; 750 } 751 752 status = avrcp_subevent_connection_established_get_status(packet); 753 if (status != ERROR_CODE_SUCCESS){ 754 printf("AVRCP Target : Connection failed: status 0x%02x\n", status); 755 avrcp_cid = 0; 756 return; 757 } 758 avrcp_cid = local_cid; 759 avrcp_subevent_connection_established_get_bd_addr(packet, address); 760 printf("AVRCP Target : Connected to %s, cid 0x%02x\n", bd_addr_to_str(address), avrcp_cid); 761 break; 762 case AVRCP_SUBEVENT_EVENT_IDS_QUERY: 763 status = avrcp_target_supported_events(avrcp_cid, events_num, events, sizeof(events)); 764 break; 765 case AVRCP_SUBEVENT_COMPANY_IDS_QUERY: 766 status = avrcp_target_supported_companies(avrcp_cid, companies_num, companies, sizeof(companies)); 767 break; 768 case AVRCP_SUBEVENT_OPERATION:{ 769 avrcp_operation_id_t operation_id = avrcp_subevent_operation_get_operation_id(packet); 770 // if (!media_tracker.connected) break; 771 switch (operation_id){ 772 case AVRCP_OPERATION_ID_PLAY: 773 printf("AVRCP Target : PLAY\n"); 774 break; 775 case AVRCP_OPERATION_ID_PAUSE: 776 printf("AVRCP Target : PAUSE\n"); 777 break; 778 case AVRCP_OPERATION_ID_STOP: 779 printf("AVRCP Target : STOP\n"); 780 break; 781 case AVRCP_OPERATION_ID_REWIND: 782 printf("AVRCP Target : REWIND\n"); 783 break; 784 case AVRCP_OPERATION_ID_FAST_FORWARD: 785 printf("AVRCP Target : FAST_FORWARD\n"); 786 break; 787 case AVRCP_OPERATION_ID_FORWARD: 788 printf("AVRCP Target : FORWARD\n"); 789 break; 790 case AVRCP_OPERATION_ID_BACKWARD: 791 printf("AVRCP Target : BACKWARD\n"); 792 break; 793 case AVRCP_OPERATION_ID_SKIP: 794 printf("AVRCP Target : SKIP\n"); 795 break; 796 case AVRCP_OPERATION_ID_MUTE: 797 printf("AVRCP Target : MUTE\n"); 798 break; 799 case AVRCP_OPERATION_ID_CHANNEL_UP: 800 printf("AVRCP Target : CHANNEL_UP\n"); 801 break; 802 case AVRCP_OPERATION_ID_CHANNEL_DOWN: 803 printf("AVRCP Target : CHANNEL_DOWN\n"); 804 break; 805 case AVRCP_OPERATION_ID_SELECT: 806 printf("AVRCP Target : SELECT\n"); 807 break; 808 case AVRCP_OPERATION_ID_UP: 809 printf("AVRCP Target : UP\n"); 810 break; 811 case AVRCP_OPERATION_ID_DOWN: 812 printf("AVRCP Target : DOWN\n"); 813 break; 814 case AVRCP_OPERATION_ID_LEFT: 815 printf("AVRCP Target : LEFT\n"); 816 break; 817 case AVRCP_OPERATION_ID_RIGHT: 818 printf("AVRCP Target : RIGTH\n"); 819 break; 820 case AVRCP_OPERATION_ID_ROOT_MENU: 821 printf("AVRCP Target : ROOT_MENU\n"); 822 break; 823 default: 824 return; 825 } 826 break; 827 } 828 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 829 printf("AVRCP Target : Disconnected, cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 830 return; 831 default: 832 printf("AVRCP Target : Event 0x%02x is not parsed\n", packet[2]); 833 break; 834 } 835 } 836 837 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 838 UNUSED(channel); 839 UNUSED(size); 840 if (packet_type != HCI_EVENT_PACKET) return; 841 if (hci_event_packet_get_type(packet) == HCI_EVENT_PIN_CODE_REQUEST) { 842 bd_addr_t address; 843 printf("Pin code request - using '0000'\n"); 844 hci_event_pin_code_request_get_bd_addr(packet, address); 845 gap_pin_code_response(address, "0000"); 846 } 847 } 848 849 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 850 UNUSED(channel); 851 UNUSED(size); 852 uint16_t cid; 853 bd_addr_t address; 854 uint8_t status; 855 856 if (packet_type != HCI_EVENT_PACKET) return; 857 if (hci_event_packet_get_type(packet) != HCI_EVENT_A2DP_META) return; 858 859 switch (packet[2]){ 860 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 861 printf("A2DP Sink : Received non SBC codec - not implemented\n"); 862 break; 863 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 864 printf("A2DP Sink : Received SBC codec configuration\n"); 865 sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 866 sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 867 sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 868 sbc_configuration.channel_mode = a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet); 869 sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 870 sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 871 sbc_configuration.allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 872 sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 873 sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 874 sbc_configuration.frames_per_buffer = sbc_configuration.subbands * sbc_configuration.block_length; 875 dump_sbc_configuration(sbc_configuration); 876 877 if (sbc_configuration.reconfigure){ 878 media_processing_close(); 879 } 880 // prepare media processing 881 media_processing_init(sbc_configuration); 882 break; 883 } 884 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 885 a2dp_subevent_stream_established_get_bd_addr(packet, address); 886 status = a2dp_subevent_stream_established_get_status(packet); 887 cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 888 if (!a2dp_cid){ 889 // incoming connection 890 a2dp_cid = cid; 891 } else if (cid != a2dp_cid) { 892 break; 893 } 894 if (status){ 895 printf("A2DP Sink : Streaming connection failed, status 0x%02x\n", status); 896 break; 897 } 898 899 memcpy(device_addr, address, 6); 900 a2dp_local_seid = a2dp_subevent_stream_established_get_local_seid(packet); 901 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); 902 break; 903 904 case A2DP_SUBEVENT_STREAM_STARTED: 905 cid = a2dp_subevent_stream_started_get_a2dp_cid(packet); 906 if (cid != a2dp_cid) break; 907 a2dp_local_seid = a2dp_subevent_stream_started_get_local_seid(packet); 908 printf("A2DP Sink : Stream started\n"); 909 media_processing_start(); 910 break; 911 912 case A2DP_SUBEVENT_STREAM_SUSPENDED: 913 cid = a2dp_subevent_stream_suspended_get_a2dp_cid(packet); 914 if (cid != a2dp_cid) break; 915 a2dp_local_seid = a2dp_subevent_stream_suspended_get_local_seid(packet); 916 printf("A2DP Sink : Stream paused\n"); 917 media_processing_pause(); 918 break; 919 920 case A2DP_SUBEVENT_STREAM_RELEASED: 921 a2dp_local_seid = a2dp_subevent_stream_released_get_local_seid(packet); 922 printf("A2DP Sink : Stream released\n"); 923 media_processing_close(); 924 break; 925 case A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 926 cid = a2dp_subevent_signaling_connection_released_get_a2dp_cid(packet); 927 printf("A2DP Sink : Signaling connection released\n"); 928 media_processing_close(); 929 break; 930 default: 931 printf("A2DP Sink : Not parsed 0x%02x\n", packet[2]); 932 break; 933 } 934 } 935 936 #ifdef HAVE_BTSTACK_STDIN 937 static void show_usage(void){ 938 bd_addr_t iut_address; 939 gap_local_bd_addr(iut_address); 940 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 941 printf("b - AVDTP Sink create connection to addr %s\n", bd_addr_to_str(device_addr)); 942 printf("B - AVDTP Sink disconnect\n"); 943 printf("c - AVRCP create connection to addr %s\n", bd_addr_to_str(device_addr)); 944 printf("C - AVRCP disconnect\n"); 945 946 printf("w - delay report\n"); 947 948 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 949 printf("O - get play status\n"); 950 printf("j - get now playing info\n"); 951 printf("k - play\n"); 952 printf("K - stop\n"); 953 printf("L - pause\n"); 954 printf("u - start fast forward\n"); 955 printf("U - stop fast forward\n"); 956 printf("n - start rewind\n"); 957 printf("N - stop rewind\n"); 958 printf("i - forward\n"); 959 printf("I - backward\n"); 960 printf("M - mute\n"); 961 printf("r - skip\n"); 962 printf("q - query repeat and shuffle mode\n"); 963 printf("v - repeat single track\n"); 964 printf("x - repeat all tracks\n"); 965 printf("X - disable repeat mode\n"); 966 printf("z - shuffle all tracks\n"); 967 printf("Z - disable shuffle mode\n"); 968 969 printf("a/A - register/deregister TRACK_CHANGED\n"); 970 printf("R/P - register/deregister PLAYBACK_POS_CHANGED\n"); 971 972 printf("\n--- Volume Control ---\n"); 973 printf("t - volume up for 10 percent\n"); 974 printf("T - volume down for 10 percent\n"); 975 976 printf("---\n"); 977 } 978 #endif 979 980 #ifdef HAVE_BTSTACK_STDIN 981 static void stdin_process(char cmd){ 982 uint8_t status = ERROR_CODE_SUCCESS; 983 984 switch (cmd){ 985 case 'b': 986 status = a2dp_sink_establish_stream(device_addr, a2dp_local_seid, &a2dp_cid); 987 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); 988 break; 989 case 'B': 990 printf(" - AVDTP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 991 status = avdtp_sink_disconnect(a2dp_cid); 992 break; 993 case 'c': 994 printf(" - Create AVRCP connection to addr %s.\n", bd_addr_to_str(device_addr)); 995 status = avrcp_connect(device_addr, &avrcp_cid); 996 break; 997 case 'C': 998 printf(" - AVRCP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 999 status = avrcp_disconnect(avrcp_cid); 1000 break; 1001 1002 case '\n': 1003 case '\r': 1004 break; 1005 case 'w': 1006 printf("Send delay report\n"); 1007 avdtp_sink_delay_report(a2dp_cid, a2dp_local_seid, 100); 1008 break; 1009 // Volume Control 1010 case 't': 1011 volume_percentage = volume_percentage <= 90 ? volume_percentage + 10 : 100; 1012 printf(" - volume up for 10 percent, %d%% (%d) \n", volume_percentage, volume_percentage * 127 / 100); 1013 status = avrcp_target_volume_changed(avrcp_cid, volume_percentage * 127 / 100); 1014 break; 1015 case 'T': 1016 volume_percentage = volume_percentage >= 10 ? volume_percentage - 10 : 0; 1017 printf(" - volume down for 10 percent, %d%% (%d) \n", volume_percentage, volume_percentage * 127 / 100); 1018 status = avrcp_target_volume_changed(avrcp_cid, volume_percentage * 127 / 100); 1019 break; 1020 1021 case 'O': 1022 printf(" - get play status\n"); 1023 status = avrcp_controller_get_play_status(avrcp_cid); 1024 break; 1025 case 'j': 1026 printf(" - get now playing info\n"); 1027 status = avrcp_controller_get_now_playing_info(avrcp_cid); 1028 break; 1029 case 'k': 1030 printf(" - play\n"); 1031 status = avrcp_controller_play(avrcp_cid); 1032 break; 1033 case 'K': 1034 printf(" - stop\n"); 1035 status = avrcp_controller_stop(avrcp_cid); 1036 break; 1037 case 'L': 1038 printf(" - pause\n"); 1039 status = avrcp_controller_pause(avrcp_cid); 1040 break; 1041 case 'u': 1042 printf(" - start fast forward\n"); 1043 status = avrcp_controller_press_and_hold_fast_forward(avrcp_cid); 1044 break; 1045 case 'U': 1046 printf(" - stop fast forward\n"); 1047 status = avrcp_controller_release_press_and_hold_cmd(avrcp_cid); 1048 break; 1049 case 'n': 1050 printf(" - start rewind\n"); 1051 status = avrcp_controller_press_and_hold_rewind(avrcp_cid); 1052 break; 1053 case 'N': 1054 printf(" - stop rewind\n"); 1055 status = avrcp_controller_release_press_and_hold_cmd(avrcp_cid); 1056 break; 1057 case 'i': 1058 printf(" - forward\n"); 1059 status = avrcp_controller_forward(avrcp_cid); 1060 break; 1061 case 'I': 1062 printf(" - backward\n"); 1063 status = avrcp_controller_backward(avrcp_cid); 1064 break; 1065 case 'M': 1066 printf(" - mute\n"); 1067 status = avrcp_controller_mute(avrcp_cid); 1068 break; 1069 case 'r': 1070 printf(" - skip\n"); 1071 status = avrcp_controller_skip(avrcp_cid); 1072 break; 1073 case 'q': 1074 printf(" - query repeat and shuffle mode\n"); 1075 status = avrcp_controller_query_shuffle_and_repeat_modes(avrcp_cid); 1076 break; 1077 case 'v': 1078 printf(" - repeat single track\n"); 1079 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 1080 break; 1081 case 'x': 1082 printf(" - repeat all tracks\n"); 1083 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 1084 break; 1085 case 'X': 1086 printf(" - disable repeat mode\n"); 1087 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_OFF); 1088 break; 1089 case 'z': 1090 printf(" - shuffle all tracks\n"); 1091 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 1092 break; 1093 case 'Z': 1094 printf(" - disable shuffle mode\n"); 1095 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_OFF); 1096 break; 1097 case 'a': 1098 printf("AVRCP: enable notification TRACK_CHANGED\n"); 1099 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 1100 break; 1101 case 'A': 1102 printf("AVRCP: disable notification TRACK_CHANGED\n"); 1103 avrcp_controller_disable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 1104 break; 1105 case 'R': 1106 printf("AVRCP: enable notification PLAYBACK_POS_CHANGED\n"); 1107 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED); 1108 break; 1109 case 'P': 1110 printf("AVRCP: disable notification PLAYBACK_POS_CHANGED\n"); 1111 avrcp_controller_disable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED); 1112 break; 1113 1114 default: 1115 show_usage(); 1116 return; 1117 } 1118 if (status != ERROR_CODE_SUCCESS){ 1119 printf("Could not perform command, status 0x%2x\n", status); 1120 } 1121 } 1122 #endif 1123 1124 int btstack_main(int argc, const char * argv[]); 1125 int btstack_main(int argc, const char * argv[]){ 1126 UNUSED(argc); 1127 (void)argv; 1128 1129 a2dp_and_avrcp_setup(); 1130 1131 #ifdef HAVE_BTSTACK_STDIN 1132 // parse human readable Bluetooth address 1133 sscanf_bd_addr(device_addr_string, device_addr); 1134 btstack_stdin_setup(stdin_process); 1135 #endif 1136 1137 // turn on! 1138 printf("Starting BTstack ...\n"); 1139 hci_power_control(HCI_POWER_ON); 1140 return 0; 1141 } 1142