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 BLUEKITCHEN 24 * GMBH 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 = "a2dp_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 static avrcp_battery_status_t battery_status = AVRCP_BATTERY_STATUS_WARNING; 148 149 #ifdef HAVE_BTSTACK_STDIN 150 // pts: 151 static const char * device_addr_string = "5C:F3:70:60:7B:87"; 152 // mac 2013: static const char * device_addr_string = "84:38:35:65:d1:15"; 153 // iPhone 5S: static const char * device_addr_string = "54:E4:3A:26:A2:39"; 154 static bd_addr_t device_addr; 155 #endif 156 157 static btstack_packet_callback_registration_t hci_event_callback_registration; 158 159 static uint8_t sdp_avdtp_sink_service_buffer[150]; 160 static uint8_t sdp_avrcp_target_service_buffer[150]; 161 static uint8_t sdp_avrcp_controller_service_buffer[200]; 162 static uint8_t device_id_sdp_service_buffer[100]; 163 164 static uint16_t a2dp_cid = 0; 165 static uint8_t a2dp_local_seid = 0; 166 167 static uint16_t avrcp_cid = 0; 168 static uint8_t avrcp_connected = 0; 169 static uint8_t avrcp_subevent_value[255]; 170 171 static uint8_t media_sbc_codec_capabilities[] = { 172 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 173 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 174 2, 53 175 }; 176 177 static uint8_t media_sbc_codec_configuration[4]; 178 179 static int media_initialized = 0; 180 static btstack_resample_t resample_instance; 181 182 /* @section Main Application Setup 183 * 184 * @text The Listing MainConfiguration shows how to setup AD2P Sink and AVRCP services. 185 * Besides calling init() method for each service, you'll also need to register several packet handlers: 186 * - hci_packet_handler - handles legacy pairing, here by using fixed '0000' pin code. 187 * - 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). 188 * - 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. 189 * - avrcp_packet_handler - receives connect/disconnect event. 190 * - avrcp_controller_packet_handler - receives answers for sent AVRCP commands. 191 * - avrcp_target_packet_handler - receives AVRCP commands, and registered notifications. 192 * - 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. 193 * 194 * @text To announce A2DP Sink and AVRCP services, you need to create corresponding 195 * SDP records and register them with the SDP service. 196 * 197 * @text Note, currently only the SBC codec is supported. 198 * If you want to store the audio data in a file, you'll need to define STORE_TO_WAV_FILE. 199 * 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. 200 * The initialization of the SBC decoder requires a callback that handles PCM data: 201 * - 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. 202 */ 203 204 /* LISTING_START(MainConfiguration): Setup Audio Sink and AVRCP services */ 205 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 206 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size); 207 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size); 208 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 209 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 210 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 211 #ifdef HAVE_BTSTACK_STDIN 212 static void stdin_process(char cmd); 213 #endif 214 215 static int a2dp_and_avrcp_setup(void){ 216 217 l2cap_init(); 218 219 #ifdef ENABLE_BLE 220 // Initialize LE Security Manager. Needed for cross-transport key derivation 221 sm_init(); 222 #endif 223 224 // Initialize AVDTP Sink 225 a2dp_sink_init(); 226 a2dp_sink_register_packet_handler(&a2dp_sink_packet_handler); 227 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 228 229 // Create stream endpoint 230 avdtp_stream_endpoint_t * local_stream_endpoint = a2dp_sink_create_stream_endpoint(AVDTP_AUDIO, 231 AVDTP_CODEC_SBC, media_sbc_codec_capabilities, sizeof(media_sbc_codec_capabilities), 232 media_sbc_codec_configuration, sizeof(media_sbc_codec_configuration)); 233 if (!local_stream_endpoint){ 234 printf("A2DP Sink: not enough memory to create local stream endpoint\n"); 235 return 1; 236 } 237 238 // Store stream enpoint's SEP ID, as it is used by A2DP API to indentify the stream endpoint 239 a2dp_local_seid = avdtp_local_seid(local_stream_endpoint); 240 241 // Initialize AVRCP service 242 avrcp_init(); 243 avrcp_register_packet_handler(&avrcp_packet_handler); 244 245 // Initialize AVRCP Controller 246 avrcp_controller_init(); 247 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 248 249 // Initialize AVRCP Target 250 avrcp_target_init(); 251 avrcp_target_register_packet_handler(&avrcp_target_packet_handler); 252 253 // Initialize SDP 254 sdp_init(); 255 256 // Create A2DP Sink service record and register it with SDP 257 memset(sdp_avdtp_sink_service_buffer, 0, sizeof(sdp_avdtp_sink_service_buffer)); 258 a2dp_sink_create_sdp_record(sdp_avdtp_sink_service_buffer, 0x10001, AVDTP_SINK_FEATURE_MASK_HEADPHONE, NULL, NULL); 259 sdp_register_service(sdp_avdtp_sink_service_buffer); 260 261 // Create AVRCP Controller service record and register it with SDP. We send Category 1 commands to the media player, e.g. play/pause 262 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 263 uint16_t controller_supported_features = AVRCP_FEATURE_MASK_CATEGORY_PLAYER_OR_RECORDER; 264 #ifdef AVRCP_BROWSING_ENABLED 265 controller_supported_features |= AVRCP_FEATURE_MASK_BROWSING; 266 #endif 267 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10002, controller_supported_features, NULL, NULL); 268 sdp_register_service(sdp_avrcp_controller_service_buffer); 269 270 // Create AVRCP Target service record and register it with SDP. We receive Category 2 commands from the media player, e.g. volume up/down 271 memset(sdp_avrcp_target_service_buffer, 0, sizeof(sdp_avrcp_target_service_buffer)); 272 uint16_t target_supported_features = AVRCP_FEATURE_MASK_CATEGORY_MONITOR_OR_AMPLIFIER; 273 avrcp_target_create_sdp_record(sdp_avrcp_target_service_buffer, 0x10003, target_supported_features, NULL, NULL); 274 sdp_register_service(sdp_avrcp_target_service_buffer); 275 276 // Create Device ID (PnP) service record and register it with SDP 277 memset(device_id_sdp_service_buffer, 0, sizeof(device_id_sdp_service_buffer)); 278 device_id_create_sdp_record(device_id_sdp_service_buffer, 0x10004, DEVICE_ID_VENDOR_ID_SOURCE_BLUETOOTH, BLUETOOTH_COMPANY_ID_BLUEKITCHEN_GMBH, 1, 1); 279 sdp_register_service(device_id_sdp_service_buffer); 280 281 // Set local name with a template Bluetooth address, that will be automatically 282 // replaced with a actual address once it is available, i.e. when BTstack boots 283 // up and starts talking to a Bluetooth module. 284 gap_set_local_name("A2DP Sink Demo 00:00:00:00:00:00"); 285 gap_discoverable_control(1); 286 gap_set_class_of_device(0x200408); 287 288 // Register for HCI events 289 hci_event_callback_registration.callback = &hci_packet_handler; 290 hci_add_event_handler(&hci_event_callback_registration); 291 292 #ifdef HAVE_POSIX_FILE_IO 293 if (!btstack_audio_sink_get_instance()){ 294 printf("No audio playback.\n"); 295 } else { 296 printf("Audio playback supported.\n"); 297 } 298 #ifdef STORE_TO_WAV_FILE 299 printf("Audio will be stored to \'%s\' file.\n", wav_filename); 300 #endif 301 #endif 302 return 0; 303 } 304 /* LISTING_END */ 305 306 static void playback_handler(int16_t * buffer, uint16_t num_audio_frames){ 307 308 #ifdef STORE_TO_WAV_FILE 309 int wav_samples = num_audio_frames * NUM_CHANNELS; 310 int16_t * wav_buffer = buffer; 311 #endif 312 313 // called from lower-layer but guaranteed to be on main thread 314 if (sbc_frame_size == 0){ 315 memset(buffer, 0, num_audio_frames * BYTES_PER_FRAME); 316 return; 317 } 318 319 // first fill from resampled audio 320 uint32_t bytes_read; 321 btstack_ring_buffer_read(&decoded_audio_ring_buffer, (uint8_t *) buffer, num_audio_frames * BYTES_PER_FRAME, &bytes_read); 322 buffer += bytes_read / NUM_CHANNELS; 323 num_audio_frames -= bytes_read / BYTES_PER_FRAME; 324 325 // then start decoding sbc frames using request_* globals 326 request_buffer = buffer; 327 request_frames = num_audio_frames; 328 while (request_frames && btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) >= sbc_frame_size){ 329 // decode frame 330 uint8_t sbc_frame[MAX_SBC_FRAME_SIZE]; 331 btstack_ring_buffer_read(&sbc_frame_ring_buffer, sbc_frame, sbc_frame_size, &bytes_read); 332 btstack_sbc_decoder_process_data(&state, 0, sbc_frame, sbc_frame_size); 333 } 334 335 #ifdef STORE_TO_WAV_FILE 336 audio_frame_count += num_audio_frames; 337 wav_writer_write_int16(wav_samples, wav_buffer); 338 #endif 339 } 340 341 static void handle_pcm_data(int16_t * data, int num_audio_frames, int num_channels, int sample_rate, void * context){ 342 UNUSED(sample_rate); 343 UNUSED(context); 344 UNUSED(num_channels); // must be stereo == 2 345 346 const btstack_audio_sink_t * audio_sink = btstack_audio_sink_get_instance(); 347 if (!audio_sink){ 348 #ifdef STORE_TO_WAV_FILE 349 audio_frame_count += num_audio_frames; 350 wav_writer_write_int16(num_audio_frames * NUM_CHANNELS, data); 351 #endif 352 return; 353 } 354 355 // resample into request buffer - add some additional space for resampling 356 int16_t output_buffer[(128+16) * NUM_CHANNELS]; // 16 * 8 * 2 357 uint32_t resampled_frames = btstack_resample_block(&resample_instance, data, num_audio_frames, output_buffer); 358 359 // store data in btstack_audio buffer first 360 int frames_to_copy = btstack_min(resampled_frames, request_frames); 361 memcpy(request_buffer, output_buffer, frames_to_copy * BYTES_PER_FRAME); 362 request_frames -= frames_to_copy; 363 request_buffer += frames_to_copy * NUM_CHANNELS; 364 365 // and rest in ring buffer 366 int frames_to_store = resampled_frames - frames_to_copy; 367 if (frames_to_store){ 368 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); 369 if (status){ 370 printf("Error storing samples in PCM ring buffer!!!\n"); 371 } 372 } 373 } 374 375 static int media_processing_init(media_codec_configuration_sbc_t configuration){ 376 if (media_initialized) return 0; 377 378 btstack_sbc_decoder_init(&state, mode, handle_pcm_data, NULL); 379 380 #ifdef STORE_TO_WAV_FILE 381 wav_writer_open(wav_filename, configuration.num_channels, configuration.sampling_frequency); 382 #endif 383 384 #ifdef STORE_TO_SBC_FILE 385 sbc_file = fopen(sbc_filename, "wb"); 386 #endif 387 388 btstack_ring_buffer_init(&sbc_frame_ring_buffer, sbc_frame_storage, sizeof(sbc_frame_storage)); 389 btstack_ring_buffer_init(&decoded_audio_ring_buffer, decoded_audio_storage, sizeof(decoded_audio_storage)); 390 btstack_resample_init(&resample_instance, configuration.num_channels); 391 392 // setup audio playback 393 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 394 if (audio){ 395 audio->init(NUM_CHANNELS, configuration.sampling_frequency, &playback_handler); 396 } 397 398 audio_stream_started = 0; 399 media_initialized = 1; 400 return 0; 401 } 402 403 static void media_processing_start(void){ 404 if (!media_initialized) return; 405 // setup audio playback 406 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 407 if (audio){ 408 audio->start_stream(); 409 } 410 audio_stream_started = 1; 411 } 412 413 static void media_processing_pause(void){ 414 if (!media_initialized) return; 415 // stop audio playback 416 audio_stream_started = 0; 417 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 418 if (audio){ 419 audio->stop_stream(); 420 } 421 } 422 423 static void media_processing_close(void){ 424 if (!media_initialized) return; 425 media_initialized = 0; 426 audio_stream_started = 0; 427 sbc_frame_size = 0; 428 429 #ifdef STORE_TO_WAV_FILE 430 wav_writer_close(); 431 uint32_t total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 432 433 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); 434 printf("WAV Writer: Wrote %u audio frames to wav file: %s\n", audio_frame_count, wav_filename); 435 #endif 436 437 #ifdef STORE_TO_SBC_FILE 438 fclose(sbc_file); 439 #endif 440 441 // stop audio playback 442 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 443 if (audio){ 444 printf("close stream\n"); 445 audio->close(); 446 } 447 } 448 449 /* @section Handle Media Data Packet 450 * 451 * @text Here the audio data, are received through the handle_l2cap_media_data_packet callback. 452 * Currently, only the SBC media codec is supported. Hence, the media data consists of the media packet header and the SBC packet. 453 * 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). 454 * If the audio stream wasn't started already and there are enough SBC frames in the ring buffer, start playback. 455 */ 456 457 static int read_media_data_header(uint8_t * packet, int size, int * offset, avdtp_media_packet_header_t * media_header); 458 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header); 459 460 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size){ 461 UNUSED(seid); 462 int pos = 0; 463 464 avdtp_media_packet_header_t media_header; 465 if (!read_media_data_header(packet, size, &pos, &media_header)) return; 466 467 avdtp_sbc_codec_header_t sbc_header; 468 if (!read_sbc_header(packet, size, &pos, &sbc_header)) return; 469 470 #ifdef STORE_TO_SBC_FILE 471 fwrite(packet+pos, size-pos, 1, sbc_file); 472 #endif 473 474 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 475 // process data right away if there's no audio implementation active, e.g. on posix systems to store as .wav 476 if (!audio){ 477 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 478 return; 479 } 480 481 // store sbc frame size for buffer management 482 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 483 484 int status = btstack_ring_buffer_write(&sbc_frame_ring_buffer, packet+pos, size-pos); 485 if (status != ERROR_CODE_SUCCESS){ 486 printf("Error storing samples in SBC ring buffer!!!\n"); 487 } 488 489 // decide on audio sync drift based on number of sbc frames in queue 490 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) / sbc_frame_size; 491 uint32_t resampling_factor; 492 493 // nomimal factor (fixed-point 2^16) and compensation offset 494 uint32_t nomimal_factor = 0x10000; 495 uint32_t compensation = 0x00100; 496 497 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 498 resampling_factor = nomimal_factor - compensation; // stretch samples 499 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 500 resampling_factor = nomimal_factor; // nothing to do 501 } else { 502 resampling_factor = nomimal_factor + compensation; // compress samples 503 } 504 505 btstack_resample_set_factor(&resample_instance, resampling_factor); 506 507 // start stream if enough frames buffered 508 if (!audio_stream_started && sbc_frames_in_buffer >= OPTIMAL_FRAMES_MIN){ 509 media_processing_start(); 510 } 511 } 512 513 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header){ 514 int sbc_header_len = 12; // without crc 515 int pos = *offset; 516 517 if (size - pos < sbc_header_len){ 518 printf("Not enough data to read SBC header, expected %d, received %d\n", sbc_header_len, size-pos); 519 return 0; 520 } 521 522 sbc_header->fragmentation = get_bit16(packet[pos], 7); 523 sbc_header->starting_packet = get_bit16(packet[pos], 6); 524 sbc_header->last_packet = get_bit16(packet[pos], 5); 525 sbc_header->num_frames = packet[pos] & 0x0f; 526 pos++; 527 *offset = pos; 528 return 1; 529 } 530 531 static int read_media_data_header(uint8_t *packet, int size, int *offset, avdtp_media_packet_header_t *media_header){ 532 int media_header_len = 12; // without crc 533 int pos = *offset; 534 535 if (size - pos < media_header_len){ 536 printf("Not enough data to read media packet header, expected %d, received %d\n", media_header_len, size-pos); 537 return 0; 538 } 539 540 media_header->version = packet[pos] & 0x03; 541 media_header->padding = get_bit16(packet[pos],2); 542 media_header->extension = get_bit16(packet[pos],3); 543 media_header->csrc_count = (packet[pos] >> 4) & 0x0F; 544 pos++; 545 546 media_header->marker = get_bit16(packet[pos],0); 547 media_header->payload_type = (packet[pos] >> 1) & 0x7F; 548 pos++; 549 550 media_header->sequence_number = big_endian_read_16(packet, pos); 551 pos+=2; 552 553 media_header->timestamp = big_endian_read_32(packet, pos); 554 pos+=4; 555 556 media_header->synchronization_source = big_endian_read_32(packet, pos); 557 pos+=4; 558 *offset = pos; 559 return 1; 560 } 561 562 static void dump_sbc_configuration(media_codec_configuration_sbc_t configuration){ 563 printf(" - num_channels: %d\n", configuration.num_channels); 564 printf(" - sampling_frequency: %d\n", configuration.sampling_frequency); 565 printf(" - channel_mode: %d\n", configuration.channel_mode); 566 printf(" - block_length: %d\n", configuration.block_length); 567 printf(" - subbands: %d\n", configuration.subbands); 568 printf(" - allocation_method: %d\n", configuration.allocation_method); 569 printf(" - bitpool_value [%d, %d] \n", configuration.min_bitpool_value, configuration.max_bitpool_value); 570 printf("\n"); 571 } 572 573 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 574 UNUSED(channel); 575 UNUSED(size); 576 uint16_t local_cid; 577 uint8_t status; 578 bd_addr_t address; 579 580 if (packet_type != HCI_EVENT_PACKET) return; 581 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 582 switch (packet[2]){ 583 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 584 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 585 status = avrcp_subevent_connection_established_get_status(packet); 586 if (status != ERROR_CODE_SUCCESS){ 587 printf("AVRCP: Connection failed: status 0x%02x\n", status); 588 avrcp_cid = 0; 589 return; 590 } 591 592 avrcp_cid = local_cid; 593 avrcp_connected = 1; 594 avrcp_subevent_connection_established_get_bd_addr(packet, address); 595 printf("AVRCP: Connected to %s, cid 0x%02x\n", bd_addr_to_str(address), avrcp_cid); 596 597 avrcp_target_support_event(avrcp_cid, AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED); 598 avrcp_target_support_event(avrcp_cid, AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED); 599 avrcp_target_battery_status_changed(avrcp_cid, battery_status); 600 601 // automatically enable notifications 602 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 603 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 604 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 605 return; 606 } 607 608 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 609 printf("AVRCP: Channel released: cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 610 avrcp_cid = 0; 611 avrcp_connected = 0; 612 return; 613 default: 614 break; 615 } 616 } 617 618 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 619 UNUSED(channel); 620 UNUSED(size); 621 622 if (packet_type != HCI_EVENT_PACKET) return; 623 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 624 if (!avrcp_cid) return; 625 626 memset(avrcp_subevent_value, 0, sizeof(avrcp_subevent_value)); 627 switch (packet[2]){ 628 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED: 629 printf("AVRCP Controller: Playback position changed, position %d ms\n", (unsigned int) avrcp_subevent_notification_playback_pos_changed_get_playback_position_ms(packet)); 630 break; 631 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED: 632 printf("AVRCP Controller: Playback status changed %s\n", avrcp_play_status2str(avrcp_subevent_notification_playback_status_changed_get_play_status(packet))); 633 return; 634 case AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED: 635 printf("AVRCP Controller: Playing content changed\n"); 636 return; 637 case AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED: 638 printf("AVRCP Controller: Track changed\n"); 639 return; 640 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 641 printf("AVRCP Controller: Changed\n"); 642 return; 643 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 644 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 645 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 646 printf("AVRCP Controller: %s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 647 break; 648 } 649 case AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO: 650 printf("AVRCP Controller: Track: %d\n", avrcp_subevent_now_playing_track_info_get_track(packet)); 651 break; 652 653 case AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO: 654 printf("AVRCP Controller: Total Tracks: %d\n", avrcp_subevent_now_playing_total_tracks_info_get_total_tracks(packet)); 655 break; 656 657 case AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO: 658 if (avrcp_subevent_now_playing_title_info_get_value_len(packet) > 0){ 659 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_title_info_get_value(packet), avrcp_subevent_now_playing_title_info_get_value_len(packet)); 660 printf("AVRCP Controller: Title: %s\n", avrcp_subevent_value); 661 } 662 break; 663 664 case AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO: 665 if (avrcp_subevent_now_playing_artist_info_get_value_len(packet) > 0){ 666 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_artist_info_get_value(packet), avrcp_subevent_now_playing_artist_info_get_value_len(packet)); 667 printf("AVRCP Controller: Artist: %s\n", avrcp_subevent_value); 668 } 669 break; 670 671 case AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO: 672 if (avrcp_subevent_now_playing_album_info_get_value_len(packet) > 0){ 673 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_album_info_get_value(packet), avrcp_subevent_now_playing_album_info_get_value_len(packet)); 674 printf("AVRCP Controller: Album: %s\n", avrcp_subevent_value); 675 } 676 break; 677 678 case AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO: 679 if (avrcp_subevent_now_playing_genre_info_get_value_len(packet) > 0){ 680 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_genre_info_get_value(packet), avrcp_subevent_now_playing_genre_info_get_value_len(packet)); 681 printf("AVRCP Controller: Genre: %s\n", avrcp_subevent_value); 682 } 683 break; 684 685 case AVRCP_SUBEVENT_PLAY_STATUS: 686 printf("AVRCP Controller: Song length %"PRIu32" ms, Song position %"PRIu32" ms, Play status %s\n", 687 avrcp_subevent_play_status_get_song_length(packet), 688 avrcp_subevent_play_status_get_song_position(packet), 689 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 690 break; 691 692 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 693 printf("AVRCP Controller: %s complete\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 694 break; 695 696 case AVRCP_SUBEVENT_OPERATION_START: 697 printf("AVRCP Controller: %s start\n", avrcp_operation2str(avrcp_subevent_operation_start_get_operation_id(packet))); 698 break; 699 700 case AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END: 701 printf("AVRCP Controller: Track reached end\n"); 702 break; 703 704 case AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE: 705 printf("AVRCP Controller: Set Player App Value %s\n", avrcp_ctype2str(avrcp_subevent_player_application_value_response_get_command_type(packet))); 706 break; 707 708 default: 709 break; 710 } 711 } 712 713 static void avrcp_volume_changed(uint8_t volume){ 714 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 715 if (audio){ 716 audio->set_volume(volume); 717 } 718 } 719 720 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 721 UNUSED(channel); 722 UNUSED(size); 723 724 if (packet_type != HCI_EVENT_PACKET) return; 725 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 726 727 uint8_t volume; 728 char const * button_state; 729 avrcp_operation_id_t operation_id; 730 731 switch (packet[2]){ 732 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 733 volume = avrcp_subevent_notification_volume_changed_get_absolute_volume(packet); 734 volume_percentage = volume * 100 / 127; 735 printf("AVRCP Target : Volume set to %d%% (%d)\n", volume_percentage, volume); 736 avrcp_volume_changed(volume); 737 break; 738 739 case AVRCP_SUBEVENT_OPERATION: 740 operation_id = avrcp_subevent_operation_get_operation_id(packet); 741 button_state = avrcp_subevent_operation_get_button_pressed(packet) > 0 ? "PRESS" : "RELEASE"; 742 switch (operation_id){ 743 case AVRCP_OPERATION_ID_VOLUME_UP: 744 printf("AVRCP Target : VOLUME UP (%s)\n", button_state); 745 break; 746 case AVRCP_OPERATION_ID_VOLUME_DOWN: 747 printf("AVRCP Target : VOLUME UP (%s)\n", button_state); 748 break; 749 default: 750 return; 751 } 752 break; 753 default: 754 printf("AVRCP Target : Event 0x%02x is not parsed\n", packet[2]); 755 break; 756 } 757 } 758 759 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 760 UNUSED(channel); 761 UNUSED(size); 762 if (packet_type != HCI_EVENT_PACKET) return; 763 if (hci_event_packet_get_type(packet) == HCI_EVENT_PIN_CODE_REQUEST) { 764 bd_addr_t address; 765 printf("Pin code request - using '0000'\n"); 766 hci_event_pin_code_request_get_bd_addr(packet, address); 767 gap_pin_code_response(address, "0000"); 768 } 769 } 770 771 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 772 UNUSED(channel); 773 UNUSED(size); 774 bd_addr_t address; 775 uint8_t status; 776 777 uint8_t allocation_method; 778 779 if (packet_type != HCI_EVENT_PACKET) return; 780 if (hci_event_packet_get_type(packet) != HCI_EVENT_A2DP_META) return; 781 782 switch (packet[2]){ 783 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 784 printf("A2DP Sink : Received non SBC codec - not implemented\n"); 785 break; 786 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 787 printf("A2DP Sink : Received SBC codec configuration\n"); 788 sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 789 sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 790 sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 791 sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 792 sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 793 sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 794 sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 795 796 allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 797 798 // Adapt Bluetooth spec definition to SBC Encoder expected input 799 sbc_configuration.allocation_method = (btstack_sbc_allocation_method_t)(allocation_method - 1); 800 801 switch (a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet)){ 802 case AVDTP_CHANNEL_MODE_JOINT_STEREO: 803 sbc_configuration.channel_mode = SBC_CHANNEL_MODE_JOINT_STEREO; 804 break; 805 case AVDTP_CHANNEL_MODE_STEREO: 806 sbc_configuration.channel_mode = SBC_CHANNEL_MODE_STEREO; 807 break; 808 case AVDTP_CHANNEL_MODE_DUAL_CHANNEL: 809 sbc_configuration.channel_mode = SBC_CHANNEL_MODE_DUAL_CHANNEL; 810 break; 811 case AVDTP_CHANNEL_MODE_MONO: 812 sbc_configuration.channel_mode = SBC_CHANNEL_MODE_MONO; 813 break; 814 default: 815 btstack_assert(false); 816 break; 817 } 818 dump_sbc_configuration(sbc_configuration); 819 820 if (sbc_configuration.reconfigure){ 821 media_processing_close(); 822 } 823 // prepare media processing 824 media_processing_init(sbc_configuration); 825 break; 826 } 827 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 828 a2dp_subevent_stream_established_get_bd_addr(packet, address); 829 status = a2dp_subevent_stream_established_get_status(packet); 830 if (status != ERROR_CODE_SUCCESS){ 831 printf("A2DP Sink : Streaming connection failed, status 0x%02x\n", status); 832 break; 833 } 834 835 a2dp_cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 836 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); 837 #ifdef HAVE_BTSTACK_STDIN 838 // use address for outgoing connections 839 memcpy(device_addr, address, 6); 840 #endif 841 break; 842 843 #ifdef ENABLE_AVDTP_ACCEPTOR_EXPLICIT_START_STREAM_CONFIRMATION 844 case A2DP_SUBEVENT_START_STREAM_REQUESTED: 845 printf("A2DP Sink : Explicit Accept to start stream, local_seid 0x%02x\n", a2dp_subevent_start_stream_requested_get_local_seid(packet)); 846 a2dp_sink_start_stream_accept(a2dp_cid, a2dp_local_seid); 847 break; 848 #endif 849 case A2DP_SUBEVENT_STREAM_STARTED: 850 printf("A2DP Sink : Stream started\n"); 851 // audio stream is started when buffer reaches minimal level 852 break; 853 854 case A2DP_SUBEVENT_STREAM_SUSPENDED: 855 printf("A2DP Sink : Stream paused\n"); 856 media_processing_pause(); 857 break; 858 859 case A2DP_SUBEVENT_STREAM_RELEASED: 860 printf("A2DP Sink : Stream released\n"); 861 media_processing_close(); 862 break; 863 864 case A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 865 printf("A2DP Sink : Signaling connection released\n"); 866 media_processing_close(); 867 break; 868 869 default: 870 printf("A2DP Sink : Not parsed 0x%02x\n", packet[2]); 871 break; 872 } 873 } 874 875 #ifdef HAVE_BTSTACK_STDIN 876 static void show_usage(void){ 877 bd_addr_t iut_address; 878 gap_local_bd_addr(iut_address); 879 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 880 printf("b - AVDTP Sink create connection to addr %s\n", bd_addr_to_str(device_addr)); 881 printf("B - AVDTP Sink disconnect\n"); 882 printf("c - AVRCP create connection to addr %s\n", bd_addr_to_str(device_addr)); 883 printf("C - AVRCP disconnect\n"); 884 885 printf("w - delay report\n"); 886 887 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 888 printf("O - get play status\n"); 889 printf("j - get now playing info\n"); 890 printf("k - play\n"); 891 printf("K - stop\n"); 892 printf("L - pause\n"); 893 printf("u - start fast forward\n"); 894 printf("U - stop fast forward\n"); 895 printf("n - start rewind\n"); 896 printf("N - stop rewind\n"); 897 printf("i - forward\n"); 898 printf("I - backward\n"); 899 printf("M - mute\n"); 900 printf("r - skip\n"); 901 printf("q - query repeat and shuffle mode\n"); 902 printf("v - repeat single track\n"); 903 printf("x - repeat all tracks\n"); 904 printf("X - disable repeat mode\n"); 905 printf("z - shuffle all tracks\n"); 906 printf("Z - disable shuffle mode\n"); 907 908 printf("a/A - register/deregister TRACK_CHANGED\n"); 909 printf("R/P - register/deregister PLAYBACK_POS_CHANGED\n"); 910 911 printf("s/S - send/release long button press REWIND\n"); 912 913 printf("\n--- Volume and Battery Control ---\n"); 914 printf("t - volume up for 10 percent\n"); 915 printf("T - volume down for 10 percent\n"); 916 printf("V - toggle Battery status from AVRCP_BATTERY_STATUS_NORMAL to AVRCP_BATTERY_STATUS_FULL_CHARGE\n"); 917 printf("---\n"); 918 } 919 #endif 920 921 #ifdef HAVE_BTSTACK_STDIN 922 static void stdin_process(char cmd){ 923 uint8_t status = ERROR_CODE_SUCCESS; 924 uint8_t volume; 925 avrcp_battery_status_t old_battery_status; 926 927 switch (cmd){ 928 case 'b': 929 status = a2dp_sink_establish_stream(device_addr, a2dp_local_seid, &a2dp_cid); 930 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); 931 break; 932 case 'B': 933 printf(" - AVDTP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 934 a2dp_sink_disconnect(a2dp_cid); 935 break; 936 case 'c': 937 printf(" - Create AVRCP connection to addr %s.\n", bd_addr_to_str(device_addr)); 938 status = avrcp_connect(device_addr, &avrcp_cid); 939 break; 940 case 'C': 941 printf(" - AVRCP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 942 status = avrcp_disconnect(avrcp_cid); 943 break; 944 945 case '\n': 946 case '\r': 947 break; 948 case 'w': 949 printf("Send delay report\n"); 950 avdtp_sink_delay_report(a2dp_cid, a2dp_local_seid, 100); 951 break; 952 // Volume Control 953 case 't': 954 volume_percentage = volume_percentage <= 90 ? volume_percentage + 10 : 100; 955 volume = volume_percentage * 127 / 100; 956 printf(" - volume up for 10 percent, %d%% (%d) \n", volume_percentage, volume); 957 status = avrcp_target_volume_changed(avrcp_cid, volume); 958 avrcp_volume_changed(volume); 959 break; 960 case 'T': 961 volume_percentage = volume_percentage >= 10 ? volume_percentage - 10 : 0; 962 volume = volume_percentage * 127 / 100; 963 printf(" - volume down for 10 percent, %d%% (%d) \n", volume_percentage, volume); 964 status = avrcp_target_volume_changed(avrcp_cid, volume); 965 avrcp_volume_changed(volume); 966 break; 967 case 'V': 968 old_battery_status = battery_status; 969 970 if (battery_status < AVRCP_BATTERY_STATUS_FULL_CHARGE){ 971 battery_status = (avrcp_battery_status_t)((uint8_t) battery_status + 1); 972 } else { 973 battery_status = AVRCP_BATTERY_STATUS_NORMAL; 974 } 975 printf(" - toggle battery value, old %d, new %d\n", old_battery_status, battery_status); 976 status = avrcp_target_battery_status_changed(avrcp_cid, battery_status); 977 break; 978 case 'O': 979 printf(" - get play status\n"); 980 status = avrcp_controller_get_play_status(avrcp_cid); 981 break; 982 case 'j': 983 printf(" - get now playing info\n"); 984 status = avrcp_controller_get_now_playing_info(avrcp_cid); 985 break; 986 case 'k': 987 printf(" - play\n"); 988 status = avrcp_controller_play(avrcp_cid); 989 break; 990 case 'K': 991 printf(" - stop\n"); 992 status = avrcp_controller_stop(avrcp_cid); 993 break; 994 case 'L': 995 printf(" - pause\n"); 996 status = avrcp_controller_pause(avrcp_cid); 997 break; 998 case 'u': 999 printf(" - start fast forward\n"); 1000 status = avrcp_controller_press_and_hold_fast_forward(avrcp_cid); 1001 break; 1002 case 'U': 1003 printf(" - stop fast forward\n"); 1004 status = avrcp_controller_release_press_and_hold_cmd(avrcp_cid); 1005 break; 1006 case 'n': 1007 printf(" - start rewind\n"); 1008 status = avrcp_controller_press_and_hold_rewind(avrcp_cid); 1009 break; 1010 case 'N': 1011 printf(" - stop rewind\n"); 1012 status = avrcp_controller_release_press_and_hold_cmd(avrcp_cid); 1013 break; 1014 case 'i': 1015 printf(" - forward\n"); 1016 status = avrcp_controller_forward(avrcp_cid); 1017 break; 1018 case 'I': 1019 printf(" - backward\n"); 1020 status = avrcp_controller_backward(avrcp_cid); 1021 break; 1022 case 'M': 1023 printf(" - mute\n"); 1024 status = avrcp_controller_mute(avrcp_cid); 1025 break; 1026 case 'r': 1027 printf(" - skip\n"); 1028 status = avrcp_controller_skip(avrcp_cid); 1029 break; 1030 case 'q': 1031 printf(" - query repeat and shuffle mode\n"); 1032 status = avrcp_controller_query_shuffle_and_repeat_modes(avrcp_cid); 1033 break; 1034 case 'v': 1035 printf(" - repeat single track\n"); 1036 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 1037 break; 1038 case 'x': 1039 printf(" - repeat all tracks\n"); 1040 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 1041 break; 1042 case 'X': 1043 printf(" - disable repeat mode\n"); 1044 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_OFF); 1045 break; 1046 case 'z': 1047 printf(" - shuffle all tracks\n"); 1048 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 1049 break; 1050 case 'Z': 1051 printf(" - disable shuffle mode\n"); 1052 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_OFF); 1053 break; 1054 case 'a': 1055 printf("AVRCP: enable notification TRACK_CHANGED\n"); 1056 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 1057 break; 1058 case 'A': 1059 printf("AVRCP: disable notification TRACK_CHANGED\n"); 1060 avrcp_controller_disable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 1061 break; 1062 case 'R': 1063 printf("AVRCP: enable notification PLAYBACK_POS_CHANGED\n"); 1064 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED); 1065 break; 1066 case 'P': 1067 printf("AVRCP: disable notification PLAYBACK_POS_CHANGED\n"); 1068 avrcp_controller_disable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED); 1069 break; 1070 case 's': 1071 printf("AVRCP: send long button press REWIND\n"); 1072 avrcp_controller_start_press_and_hold_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND); 1073 break; 1074 case 'S': 1075 printf("AVRCP: release long button press REWIND\n"); 1076 avrcp_controller_release_press_and_hold_cmd(avrcp_cid); 1077 break; 1078 default: 1079 show_usage(); 1080 return; 1081 } 1082 if (status != ERROR_CODE_SUCCESS){ 1083 printf("Could not perform command, status 0x%02x\n", status); 1084 } 1085 } 1086 #endif 1087 1088 int btstack_main(int argc, const char * argv[]); 1089 int btstack_main(int argc, const char * argv[]){ 1090 UNUSED(argc); 1091 (void)argv; 1092 1093 a2dp_and_avrcp_setup(); 1094 1095 #ifdef HAVE_BTSTACK_STDIN 1096 // parse human readable Bluetooth address 1097 sscanf_bd_addr(device_addr_string, device_addr); 1098 btstack_stdin_setup(stdin_process); 1099 #endif 1100 1101 // turn on! 1102 printf("Starting BTstack ...\n"); 1103 hci_power_control(HCI_POWER_ON); 1104 return 0; 1105 } 1106 /* EXAMPLE_END */ 1107