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 <string.h> 69 70 #include "btstack.h" 71 #include "btstack_resample.h" 72 73 //#define AVRCP_BROWSING_ENABLED 74 75 #ifdef HAVE_BTSTACK_STDIN 76 #include "btstack_stdin.h" 77 #endif 78 79 #include "btstack_ring_buffer.h" 80 81 #ifdef HAVE_POSIX_FILE_IO 82 #include "wav_util.h" 83 #define STORE_TO_WAV_FILE 84 #endif 85 86 #define NUM_CHANNELS 2 87 #define BYTES_PER_FRAME (2*NUM_CHANNELS) 88 #define MAX_SBC_FRAME_SIZE 120 89 90 #ifdef HAVE_BTSTACK_STDIN 91 static const char * device_addr_string = "5C:F3:70:60:7B:87"; // pts 92 static bd_addr_t device_addr; 93 #endif 94 95 static btstack_packet_callback_registration_t hci_event_callback_registration; 96 97 static uint8_t sdp_avdtp_sink_service_buffer[150]; 98 static uint8_t sdp_avrcp_target_service_buffer[150]; 99 static uint8_t sdp_avrcp_controller_service_buffer[200]; 100 static uint8_t device_id_sdp_service_buffer[100]; 101 102 // we support all configurations with bitpool 2-53 103 static uint8_t media_sbc_codec_capabilities[] = { 104 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 105 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 106 2, 53 107 }; 108 109 // WAV File 110 #ifdef STORE_TO_WAV_FILE 111 static uint32_t audio_frame_count = 0; 112 static char * wav_filename = "a2dp_sink_demo.wav"; 113 #endif 114 115 // SBC Decoder for WAV file or live playback 116 static btstack_sbc_decoder_state_t state; 117 static btstack_sbc_mode_t mode = SBC_MODE_STANDARD; 118 119 // ring buffer for SBC Frames 120 // below 30: add samples, 30-40: fine, above 40: drop samples 121 #define OPTIMAL_FRAMES_MIN 30 122 #define OPTIMAL_FRAMES_MAX 40 123 #define ADDITIONAL_FRAMES 20 124 static uint8_t sbc_frame_storage[(OPTIMAL_FRAMES_MAX + ADDITIONAL_FRAMES) * MAX_SBC_FRAME_SIZE]; 125 static btstack_ring_buffer_t sbc_frame_ring_buffer; 126 static unsigned int sbc_frame_size; 127 128 // overflow buffer for not fully used sbc frames, with additional frames for resampling 129 static uint8_t decoded_audio_storage[(128+16) * BYTES_PER_FRAME]; 130 static btstack_ring_buffer_t decoded_audio_ring_buffer; 131 132 static int media_initialized = 0; 133 static int audio_stream_started; 134 static btstack_resample_t resample_instance; 135 136 // temp storage of lower-layer request for audio samples 137 static int16_t * request_buffer; 138 static int request_frames; 139 140 // sink state 141 static int volume_percentage = 0; 142 static avrcp_battery_status_t battery_status = AVRCP_BATTERY_STATUS_WARNING; 143 144 typedef struct { 145 uint8_t reconfigure; 146 uint8_t num_channels; 147 uint16_t sampling_frequency; 148 uint8_t block_length; 149 uint8_t subbands; 150 uint8_t min_bitpool_value; 151 uint8_t max_bitpool_value; 152 btstack_sbc_channel_mode_t channel_mode; 153 btstack_sbc_allocation_method_t allocation_method; 154 } media_codec_configuration_sbc_t; 155 156 typedef struct { 157 media_codec_configuration_sbc_t sbc_configuration; 158 uint8_t media_sbc_codec_configuration[4]; 159 uint16_t a2dp_cid; 160 uint8_t a2dp_local_seid; 161 uint16_t avrcp_cid; 162 } source_connection_t; 163 static source_connection_t source_connection; 164 165 /* @section Main Application Setup 166 * 167 * @text The Listing MainConfiguration shows how to set up AD2P Sink and AVRCP services. 168 * Besides calling init() method for each service, you'll also need to register several packet handlers: 169 * - hci_packet_handler - handles legacy pairing, here by using fixed '0000' pin code. 170 * - 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). 171 * - 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. 172 * - avrcp_packet_handler - receives connect/disconnect event. 173 * - avrcp_controller_packet_handler - receives answers for sent AVRCP commands. 174 * - avrcp_target_packet_handler - receives AVRCP commands, and registered notifications. 175 * - 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. 176 * 177 * @text To announce A2DP Sink and AVRCP services, you need to create corresponding 178 * SDP records and register them with the SDP service. 179 * 180 * @text Note, currently only the SBC codec is supported. 181 * If you want to store the audio data in a file, you'll need to define STORE_TO_WAV_FILE. 182 * 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. 183 * The initialization of the SBC decoder requires a callback that handles PCM data: 184 * - handle_pcm_data - handles PCM audio frames. Here, they are stored in a wav file if STORE_TO_WAV_FILE is defined, and/or played using the audio library. 185 */ 186 187 /* LISTING_START(MainConfiguration): Setup Audio Sink and AVRCP services */ 188 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 189 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * packet, uint16_t event_size); 190 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size); 191 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 192 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 193 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 194 #ifdef HAVE_BTSTACK_STDIN 195 static void stdin_process(char cmd); 196 #endif 197 198 static int a2dp_and_avrcp_setup(void){ 199 200 l2cap_init(); 201 202 #ifdef ENABLE_BLE 203 // Initialize LE Security Manager. Needed for cross-transport key derivation 204 sm_init(); 205 #endif 206 207 // Initialize AVDTP Sink 208 a2dp_sink_init(); 209 a2dp_sink_register_packet_handler(&a2dp_sink_packet_handler); 210 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 211 212 // Create stream endpoint 213 source_connection_t * connection = &source_connection; 214 avdtp_stream_endpoint_t * local_stream_endpoint = a2dp_sink_create_stream_endpoint(AVDTP_AUDIO, 215 AVDTP_CODEC_SBC, media_sbc_codec_capabilities, sizeof(media_sbc_codec_capabilities), 216 connection->media_sbc_codec_configuration, sizeof(connection->media_sbc_codec_configuration)); 217 if (!local_stream_endpoint){ 218 printf("A2DP Sink: not enough memory to create local stream endpoint\n"); 219 return 1; 220 } 221 222 // Store stream enpoint's SEP ID, as it is used by A2DP API to identify the stream endpoint 223 connection->a2dp_local_seid = avdtp_local_seid(local_stream_endpoint); 224 225 // Initialize AVRCP service 226 avrcp_init(); 227 avrcp_register_packet_handler(&avrcp_packet_handler); 228 229 // Initialize AVRCP Controller 230 avrcp_controller_init(); 231 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 232 233 // Initialize AVRCP Target 234 avrcp_target_init(); 235 avrcp_target_register_packet_handler(&avrcp_target_packet_handler); 236 237 // Initialize SDP 238 sdp_init(); 239 240 // Create A2DP Sink service record and register it with SDP 241 memset(sdp_avdtp_sink_service_buffer, 0, sizeof(sdp_avdtp_sink_service_buffer)); 242 a2dp_sink_create_sdp_record(sdp_avdtp_sink_service_buffer, 0x10001, AVDTP_SINK_FEATURE_MASK_HEADPHONE, NULL, NULL); 243 sdp_register_service(sdp_avdtp_sink_service_buffer); 244 245 // Create AVRCP Controller service record and register it with SDP. We send Category 1 commands to the media player, e.g. play/pause 246 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 247 uint16_t controller_supported_features = AVRCP_FEATURE_MASK_CATEGORY_PLAYER_OR_RECORDER; 248 #ifdef AVRCP_BROWSING_ENABLED 249 controller_supported_features |= AVRCP_FEATURE_MASK_BROWSING; 250 #endif 251 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10002, controller_supported_features, NULL, NULL); 252 sdp_register_service(sdp_avrcp_controller_service_buffer); 253 254 // Create AVRCP Target service record and register it with SDP. We receive Category 2 commands from the media player, e.g. volume up/down 255 memset(sdp_avrcp_target_service_buffer, 0, sizeof(sdp_avrcp_target_service_buffer)); 256 uint16_t target_supported_features = AVRCP_FEATURE_MASK_CATEGORY_MONITOR_OR_AMPLIFIER; 257 avrcp_target_create_sdp_record(sdp_avrcp_target_service_buffer, 0x10003, target_supported_features, NULL, NULL); 258 sdp_register_service(sdp_avrcp_target_service_buffer); 259 260 // Create Device ID (PnP) service record and register it with SDP 261 memset(device_id_sdp_service_buffer, 0, sizeof(device_id_sdp_service_buffer)); 262 device_id_create_sdp_record(device_id_sdp_service_buffer, 0x10004, DEVICE_ID_VENDOR_ID_SOURCE_BLUETOOTH, BLUETOOTH_COMPANY_ID_BLUEKITCHEN_GMBH, 1, 1); 263 sdp_register_service(device_id_sdp_service_buffer); 264 265 // Set local name with a template Bluetooth address, that will be automatically 266 // replaced with an actual address once it is available, i.e. when BTstack boots 267 // up and starts talking to a Bluetooth module. 268 gap_set_local_name("A2DP Sink Demo 00:00:00:00:00:00"); 269 270 // allot to show up in Bluetooth inquiry 271 gap_discoverable_control(1); 272 273 // Service Class: Audio, Major Device Class: Audio, Minor: Loudspeaker 274 gap_set_class_of_device(0x200414); 275 276 // allow for role switch in general and sniff mode 277 gap_set_default_link_policy_settings( LM_LINK_POLICY_ENABLE_ROLE_SWITCH | LM_LINK_POLICY_ENABLE_SNIFF_MODE ); 278 279 // allow for role switch on outgoing connections - this allows A2DP Source, e.g. smartphone, to become master when we re-connect to it 280 gap_set_allow_role_switch(true); 281 282 // Register for HCI events 283 hci_event_callback_registration.callback = &hci_packet_handler; 284 hci_add_event_handler(&hci_event_callback_registration); 285 286 #ifdef HAVE_POSIX_FILE_IO 287 if (!btstack_audio_sink_get_instance()){ 288 printf("No audio playback.\n"); 289 } else { 290 printf("Audio playback supported.\n"); 291 } 292 #ifdef STORE_TO_WAV_FILE 293 printf("Audio will be stored to \'%s\' file.\n", wav_filename); 294 #endif 295 #endif 296 return 0; 297 } 298 /* LISTING_END */ 299 300 static void playback_handler(int16_t * buffer, uint16_t num_audio_frames){ 301 302 #ifdef STORE_TO_WAV_FILE 303 int wav_samples = num_audio_frames * NUM_CHANNELS; 304 int16_t * wav_buffer = buffer; 305 #endif 306 307 // called from lower-layer but guaranteed to be on main thread 308 if (sbc_frame_size == 0){ 309 memset(buffer, 0, num_audio_frames * BYTES_PER_FRAME); 310 return; 311 } 312 313 // first fill from resampled audio 314 uint32_t bytes_read; 315 btstack_ring_buffer_read(&decoded_audio_ring_buffer, (uint8_t *) buffer, num_audio_frames * BYTES_PER_FRAME, &bytes_read); 316 buffer += bytes_read / NUM_CHANNELS; 317 num_audio_frames -= bytes_read / BYTES_PER_FRAME; 318 319 // then start decoding sbc frames using request_* globals 320 request_buffer = buffer; 321 request_frames = num_audio_frames; 322 while (request_frames && btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) >= sbc_frame_size){ 323 // decode frame 324 uint8_t sbc_frame[MAX_SBC_FRAME_SIZE]; 325 btstack_ring_buffer_read(&sbc_frame_ring_buffer, sbc_frame, sbc_frame_size, &bytes_read); 326 btstack_sbc_decoder_process_data(&state, 0, sbc_frame, sbc_frame_size); 327 } 328 329 #ifdef STORE_TO_WAV_FILE 330 audio_frame_count += num_audio_frames; 331 wav_writer_write_int16(wav_samples, wav_buffer); 332 #endif 333 } 334 335 static void handle_pcm_data(int16_t * data, int num_audio_frames, int num_channels, int sample_rate, void * context){ 336 UNUSED(sample_rate); 337 UNUSED(context); 338 UNUSED(num_channels); // must be stereo == 2 339 340 const btstack_audio_sink_t * audio_sink = btstack_audio_sink_get_instance(); 341 if (!audio_sink){ 342 #ifdef STORE_TO_WAV_FILE 343 audio_frame_count += num_audio_frames; 344 wav_writer_write_int16(num_audio_frames * NUM_CHANNELS, data); 345 #endif 346 return; 347 } 348 349 // resample into request buffer - add some additional space for resampling 350 int16_t output_buffer[(128+16) * NUM_CHANNELS]; // 16 * 8 * 2 351 uint32_t resampled_frames = btstack_resample_block(&resample_instance, data, num_audio_frames, output_buffer); 352 353 // store data in btstack_audio buffer first 354 int frames_to_copy = btstack_min(resampled_frames, request_frames); 355 memcpy(request_buffer, output_buffer, frames_to_copy * BYTES_PER_FRAME); 356 request_frames -= frames_to_copy; 357 request_buffer += frames_to_copy * NUM_CHANNELS; 358 359 // and rest in ring buffer 360 int frames_to_store = resampled_frames - frames_to_copy; 361 if (frames_to_store){ 362 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); 363 if (status){ 364 printf("Error storing samples in PCM ring buffer!!!\n"); 365 } 366 } 367 } 368 369 static int media_processing_init(media_codec_configuration_sbc_t configuration){ 370 if (media_initialized) return 0; 371 372 btstack_sbc_decoder_init(&state, mode, handle_pcm_data, NULL); 373 374 #ifdef STORE_TO_WAV_FILE 375 wav_writer_open(wav_filename, configuration.num_channels, configuration.sampling_frequency); 376 #endif 377 378 btstack_ring_buffer_init(&sbc_frame_ring_buffer, sbc_frame_storage, sizeof(sbc_frame_storage)); 379 btstack_ring_buffer_init(&decoded_audio_ring_buffer, decoded_audio_storage, sizeof(decoded_audio_storage)); 380 btstack_resample_init(&resample_instance, configuration.num_channels); 381 382 // setup audio playback 383 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 384 if (audio){ 385 audio->init(NUM_CHANNELS, configuration.sampling_frequency, &playback_handler); 386 } 387 388 audio_stream_started = 0; 389 media_initialized = 1; 390 return 0; 391 } 392 393 static void media_processing_start(void){ 394 if (!media_initialized) return; 395 // setup audio playback 396 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 397 if (audio){ 398 audio->start_stream(); 399 } 400 audio_stream_started = 1; 401 } 402 403 static void media_processing_pause(void){ 404 if (!media_initialized) return; 405 // stop audio playback 406 audio_stream_started = 0; 407 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 408 if (audio){ 409 audio->stop_stream(); 410 } 411 } 412 413 static void media_processing_close(void){ 414 if (!media_initialized) return; 415 media_initialized = 0; 416 audio_stream_started = 0; 417 sbc_frame_size = 0; 418 419 #ifdef STORE_TO_WAV_FILE 420 wav_writer_close(); 421 uint32_t total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 422 423 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); 424 printf("WAV Writer: Wrote %u audio frames to wav file: %s\n", audio_frame_count, wav_filename); 425 #endif 426 427 // stop audio playback 428 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 429 if (audio){ 430 printf("close stream\n"); 431 audio->close(); 432 } 433 } 434 435 /* @section Handle Media Data Packet 436 * 437 * @text Here the audio data, are received through the handle_l2cap_media_data_packet callback. 438 * Currently, only the SBC media codec is supported. Hence, the media data consists of the media packet header and the SBC packet. 439 * 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). 440 * If the audio stream wasn't started already and there are enough SBC frames in the ring buffer, start playback. 441 */ 442 443 static int read_media_data_header(uint8_t * packet, int size, int * offset, avdtp_media_packet_header_t * media_header); 444 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header); 445 446 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size){ 447 UNUSED(seid); 448 int pos = 0; 449 450 avdtp_media_packet_header_t media_header; 451 if (!read_media_data_header(packet, size, &pos, &media_header)) return; 452 453 avdtp_sbc_codec_header_t sbc_header; 454 if (!read_sbc_header(packet, size, &pos, &sbc_header)) return; 455 456 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 457 // process data right away if there's no audio implementation active, e.g. on posix systems to store as .wav 458 if (!audio){ 459 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 460 return; 461 } 462 463 // store sbc frame size for buffer management 464 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 465 466 int status = btstack_ring_buffer_write(&sbc_frame_ring_buffer, packet+pos, size-pos); 467 if (status != ERROR_CODE_SUCCESS){ 468 printf("Error storing samples in SBC ring buffer!!!\n"); 469 } 470 471 // decide on audio sync drift based on number of sbc frames in queue 472 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) / sbc_frame_size; 473 uint32_t resampling_factor; 474 475 // nominal factor (fixed-point 2^16) and compensation offset 476 uint32_t nominal_factor = 0x10000; 477 uint32_t compensation = 0x00100; 478 479 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 480 resampling_factor = nominal_factor - compensation; // stretch samples 481 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 482 resampling_factor = nominal_factor; // nothing to do 483 } else { 484 resampling_factor = nominal_factor + compensation; // compress samples 485 } 486 487 btstack_resample_set_factor(&resample_instance, resampling_factor); 488 489 // start stream if enough frames buffered 490 if (!audio_stream_started && sbc_frames_in_buffer >= OPTIMAL_FRAMES_MIN){ 491 media_processing_start(); 492 } 493 } 494 495 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header){ 496 int sbc_header_len = 12; // without crc 497 int pos = *offset; 498 499 if (size - pos < sbc_header_len){ 500 printf("Not enough data to read SBC header, expected %d, received %d\n", sbc_header_len, size-pos); 501 return 0; 502 } 503 504 sbc_header->fragmentation = get_bit16(packet[pos], 7); 505 sbc_header->starting_packet = get_bit16(packet[pos], 6); 506 sbc_header->last_packet = get_bit16(packet[pos], 5); 507 sbc_header->num_frames = packet[pos] & 0x0f; 508 pos++; 509 *offset = pos; 510 return 1; 511 } 512 513 static int read_media_data_header(uint8_t *packet, int size, int *offset, avdtp_media_packet_header_t *media_header){ 514 int media_header_len = 12; // without crc 515 int pos = *offset; 516 517 if (size - pos < media_header_len){ 518 printf("Not enough data to read media packet header, expected %d, received %d\n", media_header_len, size-pos); 519 return 0; 520 } 521 522 media_header->version = packet[pos] & 0x03; 523 media_header->padding = get_bit16(packet[pos],2); 524 media_header->extension = get_bit16(packet[pos],3); 525 media_header->csrc_count = (packet[pos] >> 4) & 0x0F; 526 pos++; 527 528 media_header->marker = get_bit16(packet[pos],0); 529 media_header->payload_type = (packet[pos] >> 1) & 0x7F; 530 pos++; 531 532 media_header->sequence_number = big_endian_read_16(packet, pos); 533 pos+=2; 534 535 media_header->timestamp = big_endian_read_32(packet, pos); 536 pos+=4; 537 538 media_header->synchronization_source = big_endian_read_32(packet, pos); 539 pos+=4; 540 *offset = pos; 541 return 1; 542 } 543 544 static void dump_sbc_configuration(media_codec_configuration_sbc_t * configuration){ 545 printf(" - num_channels: %d\n", configuration->num_channels); 546 printf(" - sampling_frequency: %d\n", configuration->sampling_frequency); 547 printf(" - channel_mode: %d\n", configuration->channel_mode); 548 printf(" - block_length: %d\n", configuration->block_length); 549 printf(" - subbands: %d\n", configuration->subbands); 550 printf(" - allocation_method: %d\n", configuration->allocation_method); 551 printf(" - bitpool_value [%d, %d] \n", configuration->min_bitpool_value, configuration->max_bitpool_value); 552 printf("\n"); 553 } 554 555 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 556 UNUSED(channel); 557 UNUSED(size); 558 uint16_t local_cid; 559 uint8_t status; 560 bd_addr_t address; 561 562 source_connection_t * connection = &source_connection; 563 564 if (packet_type != HCI_EVENT_PACKET) return; 565 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 566 switch (packet[2]){ 567 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 568 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 569 status = avrcp_subevent_connection_established_get_status(packet); 570 if (status != ERROR_CODE_SUCCESS){ 571 printf("AVRCP: Connection failed: status 0x%02x\n", status); 572 connection->avrcp_cid = 0; 573 return; 574 } 575 576 connection->avrcp_cid = local_cid; 577 avrcp_subevent_connection_established_get_bd_addr(packet, address); 578 printf("AVRCP: Connected to %s, cid 0x%02x\n", bd_addr_to_str(address), connection->avrcp_cid); 579 580 avrcp_target_support_event(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED); 581 avrcp_target_support_event(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED); 582 avrcp_target_battery_status_changed(connection->avrcp_cid, battery_status); 583 584 // automatically enable notifications 585 avrcp_controller_enable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 586 avrcp_controller_enable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 587 avrcp_controller_enable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 588 return; 589 } 590 591 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 592 printf("AVRCP: Channel released: cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 593 connection->avrcp_cid = 0; 594 return; 595 default: 596 break; 597 } 598 } 599 600 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 601 UNUSED(channel); 602 UNUSED(size); 603 604 // helper to print c strings 605 uint8_t avrcp_subevent_value[256]; 606 607 source_connection_t * connection = &source_connection; 608 609 if (packet_type != HCI_EVENT_PACKET) return; 610 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 611 if (connection->avrcp_cid == 0) return; 612 613 memset(avrcp_subevent_value, 0, sizeof(avrcp_subevent_value)); 614 switch (packet[2]){ 615 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED: 616 printf("AVRCP Controller: Playback position changed, position %d ms\n", (unsigned int) avrcp_subevent_notification_playback_pos_changed_get_playback_position_ms(packet)); 617 break; 618 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED: 619 printf("AVRCP Controller: Playback status changed %s\n", avrcp_play_status2str(avrcp_subevent_notification_playback_status_changed_get_play_status(packet))); 620 return; 621 case AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED: 622 printf("AVRCP Controller: Playing content changed\n"); 623 return; 624 case AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED: 625 printf("AVRCP Controller: Track changed\n"); 626 return; 627 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 628 printf("AVRCP Controller: Changed\n"); 629 return; 630 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 631 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 632 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 633 printf("AVRCP Controller: %s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 634 break; 635 } 636 case AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO: 637 printf("AVRCP Controller: Track: %d\n", avrcp_subevent_now_playing_track_info_get_track(packet)); 638 break; 639 640 case AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO: 641 printf("AVRCP Controller: Total Tracks: %d\n", avrcp_subevent_now_playing_total_tracks_info_get_total_tracks(packet)); 642 break; 643 644 case AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO: 645 if (avrcp_subevent_now_playing_title_info_get_value_len(packet) > 0){ 646 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_title_info_get_value(packet), avrcp_subevent_now_playing_title_info_get_value_len(packet)); 647 printf("AVRCP Controller: Title: %s\n", avrcp_subevent_value); 648 } 649 break; 650 651 case AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO: 652 if (avrcp_subevent_now_playing_artist_info_get_value_len(packet) > 0){ 653 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_artist_info_get_value(packet), avrcp_subevent_now_playing_artist_info_get_value_len(packet)); 654 printf("AVRCP Controller: Artist: %s\n", avrcp_subevent_value); 655 } 656 break; 657 658 case AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO: 659 if (avrcp_subevent_now_playing_album_info_get_value_len(packet) > 0){ 660 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_album_info_get_value(packet), avrcp_subevent_now_playing_album_info_get_value_len(packet)); 661 printf("AVRCP Controller: Album: %s\n", avrcp_subevent_value); 662 } 663 break; 664 665 case AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO: 666 if (avrcp_subevent_now_playing_genre_info_get_value_len(packet) > 0){ 667 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_genre_info_get_value(packet), avrcp_subevent_now_playing_genre_info_get_value_len(packet)); 668 printf("AVRCP Controller: Genre: %s\n", avrcp_subevent_value); 669 } 670 break; 671 672 case AVRCP_SUBEVENT_PLAY_STATUS: 673 printf("AVRCP Controller: Song length %"PRIu32" ms, Song position %"PRIu32" ms, Play status %s\n", 674 avrcp_subevent_play_status_get_song_length(packet), 675 avrcp_subevent_play_status_get_song_position(packet), 676 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 677 break; 678 679 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 680 printf("AVRCP Controller: %s complete\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 681 break; 682 683 case AVRCP_SUBEVENT_OPERATION_START: 684 printf("AVRCP Controller: %s start\n", avrcp_operation2str(avrcp_subevent_operation_start_get_operation_id(packet))); 685 break; 686 687 case AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END: 688 printf("AVRCP Controller: Track reached end\n"); 689 break; 690 691 case AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE: 692 printf("AVRCP Controller: Set Player App Value %s\n", avrcp_ctype2str(avrcp_subevent_player_application_value_response_get_command_type(packet))); 693 break; 694 695 default: 696 break; 697 } 698 } 699 700 static void avrcp_volume_changed(uint8_t volume){ 701 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 702 if (audio){ 703 audio->set_volume(volume); 704 } 705 } 706 707 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 708 UNUSED(channel); 709 UNUSED(size); 710 711 if (packet_type != HCI_EVENT_PACKET) return; 712 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 713 714 uint8_t volume; 715 char const * button_state; 716 avrcp_operation_id_t operation_id; 717 718 switch (packet[2]){ 719 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 720 volume = avrcp_subevent_notification_volume_changed_get_absolute_volume(packet); 721 volume_percentage = volume * 100 / 127; 722 printf("AVRCP Target : Volume set to %d%% (%d)\n", volume_percentage, volume); 723 avrcp_volume_changed(volume); 724 break; 725 726 case AVRCP_SUBEVENT_OPERATION: 727 operation_id = avrcp_subevent_operation_get_operation_id(packet); 728 button_state = avrcp_subevent_operation_get_button_pressed(packet) > 0 ? "PRESS" : "RELEASE"; 729 switch (operation_id){ 730 case AVRCP_OPERATION_ID_VOLUME_UP: 731 printf("AVRCP Target : VOLUME UP (%s)\n", button_state); 732 break; 733 case AVRCP_OPERATION_ID_VOLUME_DOWN: 734 printf("AVRCP Target : VOLUME DOWN (%s)\n", button_state); 735 break; 736 default: 737 return; 738 } 739 break; 740 default: 741 printf("AVRCP Target : Event 0x%02x is not parsed\n", packet[2]); 742 break; 743 } 744 } 745 746 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 747 UNUSED(channel); 748 UNUSED(size); 749 if (packet_type != HCI_EVENT_PACKET) return; 750 if (hci_event_packet_get_type(packet) == HCI_EVENT_PIN_CODE_REQUEST) { 751 bd_addr_t address; 752 printf("Pin code request - using '0000'\n"); 753 hci_event_pin_code_request_get_bd_addr(packet, address); 754 gap_pin_code_response(address, "0000"); 755 } 756 } 757 758 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 759 UNUSED(channel); 760 UNUSED(size); 761 bd_addr_t address; 762 uint8_t status; 763 764 uint8_t allocation_method; 765 766 if (packet_type != HCI_EVENT_PACKET) return; 767 if (hci_event_packet_get_type(packet) != HCI_EVENT_A2DP_META) return; 768 769 source_connection_t * connection = &source_connection; 770 771 switch (packet[2]){ 772 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 773 printf("A2DP Sink : Received non SBC codec - not implemented\n"); 774 break; 775 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 776 printf("A2DP Sink : Received SBC codec configuration\n"); 777 connection->sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 778 connection->sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 779 connection->sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 780 connection->sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 781 connection->sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 782 connection->sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 783 connection->sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 784 785 allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 786 787 // Adapt Bluetooth spec definition to SBC Encoder expected input 788 connection->sbc_configuration.allocation_method = (btstack_sbc_allocation_method_t)(allocation_method - 1); 789 790 switch (a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet)){ 791 case AVDTP_CHANNEL_MODE_JOINT_STEREO: 792 connection->sbc_configuration.channel_mode = SBC_CHANNEL_MODE_JOINT_STEREO; 793 break; 794 case AVDTP_CHANNEL_MODE_STEREO: 795 connection->sbc_configuration.channel_mode = SBC_CHANNEL_MODE_STEREO; 796 break; 797 case AVDTP_CHANNEL_MODE_DUAL_CHANNEL: 798 connection->sbc_configuration.channel_mode = SBC_CHANNEL_MODE_DUAL_CHANNEL; 799 break; 800 case AVDTP_CHANNEL_MODE_MONO: 801 connection->sbc_configuration.channel_mode = SBC_CHANNEL_MODE_MONO; 802 break; 803 default: 804 btstack_assert(false); 805 break; 806 } 807 dump_sbc_configuration(&connection->sbc_configuration); 808 809 if (connection->sbc_configuration.reconfigure){ 810 media_processing_close(); 811 } 812 // prepare media processing 813 media_processing_init(connection->sbc_configuration); 814 break; 815 } 816 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 817 a2dp_subevent_stream_established_get_bd_addr(packet, address); 818 status = a2dp_subevent_stream_established_get_status(packet); 819 if (status != ERROR_CODE_SUCCESS){ 820 printf("A2DP Sink : Streaming connection failed, status 0x%02x\n", status); 821 break; 822 } 823 824 connection->a2dp_cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 825 printf("A2DP Sink : Streaming connection is established, address %s, cid 0x%02X, local seid %d\n", 826 bd_addr_to_str(address), connection->a2dp_cid, connection->a2dp_local_seid); 827 #ifdef HAVE_BTSTACK_STDIN 828 // use address for outgoing connections 829 memcpy(device_addr, address, 6); 830 #endif 831 break; 832 833 #ifdef ENABLE_AVDTP_ACCEPTOR_EXPLICIT_START_STREAM_CONFIRMATION 834 case A2DP_SUBEVENT_START_STREAM_REQUESTED: 835 printf("A2DP Sink : Explicit Accept to start stream, local_seid 0x%02x\n", a2dp_subevent_start_stream_requested_get_local_seid(packet)); 836 a2dp_sink_start_stream_accept(a2dp_cid, a2dp_local_seid); 837 break; 838 #endif 839 case A2DP_SUBEVENT_STREAM_STARTED: 840 printf("A2DP Sink : Stream started\n"); 841 // audio stream is started when buffer reaches minimal level 842 break; 843 844 case A2DP_SUBEVENT_STREAM_SUSPENDED: 845 printf("A2DP Sink : Stream paused\n"); 846 media_processing_pause(); 847 break; 848 849 case A2DP_SUBEVENT_STREAM_RELEASED: 850 printf("A2DP Sink : Stream released\n"); 851 media_processing_close(); 852 break; 853 854 case A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 855 printf("A2DP Sink : Signaling connection released\n"); 856 media_processing_close(); 857 break; 858 859 default: 860 break; 861 } 862 } 863 864 #ifdef HAVE_BTSTACK_STDIN 865 static void show_usage(void){ 866 bd_addr_t iut_address; 867 gap_local_bd_addr(iut_address); 868 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 869 printf("b - AVDTP Sink create connection to addr %s\n", bd_addr_to_str(device_addr)); 870 printf("B - AVDTP Sink disconnect\n"); 871 printf("c - AVRCP create connection to addr %s\n", bd_addr_to_str(device_addr)); 872 printf("C - AVRCP disconnect\n"); 873 874 printf("w - delay report\n"); 875 876 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 877 printf("O - get play status\n"); 878 printf("j - get now playing info\n"); 879 printf("k - play\n"); 880 printf("K - stop\n"); 881 printf("L - pause\n"); 882 printf("u - start fast forward\n"); 883 printf("U - stop fast forward\n"); 884 printf("n - start rewind\n"); 885 printf("N - stop rewind\n"); 886 printf("i - forward\n"); 887 printf("I - backward\n"); 888 printf("M - mute\n"); 889 printf("r - skip\n"); 890 printf("q - query repeat and shuffle mode\n"); 891 printf("v - repeat single track\n"); 892 printf("x - repeat all tracks\n"); 893 printf("X - disable repeat mode\n"); 894 printf("z - shuffle all tracks\n"); 895 printf("Z - disable shuffle mode\n"); 896 897 printf("a/A - register/deregister TRACK_CHANGED\n"); 898 printf("R/P - register/deregister PLAYBACK_POS_CHANGED\n"); 899 900 printf("s/S - send/release long button press REWIND\n"); 901 902 printf("\n--- Volume and Battery Control ---\n"); 903 printf("t - volume up for 10 percent\n"); 904 printf("T - volume down for 10 percent\n"); 905 printf("V - toggle Battery status from AVRCP_BATTERY_STATUS_NORMAL to AVRCP_BATTERY_STATUS_FULL_CHARGE\n"); 906 printf("---\n"); 907 } 908 #endif 909 910 #ifdef HAVE_BTSTACK_STDIN 911 static void stdin_process(char cmd){ 912 uint8_t status = ERROR_CODE_SUCCESS; 913 uint8_t volume; 914 avrcp_battery_status_t old_battery_status; 915 916 source_connection_t * connection = &source_connection; 917 918 switch (cmd){ 919 case 'b': 920 status = a2dp_sink_establish_stream(device_addr, connection->a2dp_local_seid, &connection->a2dp_cid); 921 printf(" - Create AVDTP connection to addr %s, and local seid %d, expected cid 0x%02x.\n", 922 bd_addr_to_str(device_addr), connection->a2dp_local_seid, connection->a2dp_cid); 923 break; 924 case 'B': 925 printf(" - AVDTP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 926 a2dp_sink_disconnect(connection->a2dp_cid); 927 break; 928 case 'c': 929 printf(" - Create AVRCP connection to addr %s.\n", bd_addr_to_str(device_addr)); 930 status = avrcp_connect(device_addr, &connection->avrcp_cid); 931 break; 932 case 'C': 933 printf(" - AVRCP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 934 status = avrcp_disconnect(connection->avrcp_cid); 935 break; 936 937 case '\n': 938 case '\r': 939 break; 940 case 'w': 941 printf("Send delay report\n"); 942 avdtp_sink_delay_report(connection->a2dp_cid, connection->a2dp_local_seid, 100); 943 break; 944 // Volume Control 945 case 't': 946 volume_percentage = volume_percentage <= 90 ? volume_percentage + 10 : 100; 947 volume = volume_percentage * 127 / 100; 948 printf(" - volume up for 10 percent, %d%% (%d) \n", volume_percentage, volume); 949 status = avrcp_target_volume_changed(connection->avrcp_cid, volume); 950 avrcp_volume_changed(volume); 951 break; 952 case 'T': 953 volume_percentage = volume_percentage >= 10 ? volume_percentage - 10 : 0; 954 volume = volume_percentage * 127 / 100; 955 printf(" - volume down for 10 percent, %d%% (%d) \n", volume_percentage, volume); 956 status = avrcp_target_volume_changed(connection->avrcp_cid, volume); 957 avrcp_volume_changed(volume); 958 break; 959 case 'V': 960 old_battery_status = battery_status; 961 962 if (battery_status < AVRCP_BATTERY_STATUS_FULL_CHARGE){ 963 battery_status = (avrcp_battery_status_t)((uint8_t) battery_status + 1); 964 } else { 965 battery_status = AVRCP_BATTERY_STATUS_NORMAL; 966 } 967 printf(" - toggle battery value, old %d, new %d\n", old_battery_status, battery_status); 968 status = avrcp_target_battery_status_changed(connection->avrcp_cid, battery_status); 969 break; 970 case 'O': 971 printf(" - get play status\n"); 972 status = avrcp_controller_get_play_status(connection->avrcp_cid); 973 break; 974 case 'j': 975 printf(" - get now playing info\n"); 976 status = avrcp_controller_get_now_playing_info(connection->avrcp_cid); 977 break; 978 case 'k': 979 printf(" - play\n"); 980 status = avrcp_controller_play(connection->avrcp_cid); 981 break; 982 case 'K': 983 printf(" - stop\n"); 984 status = avrcp_controller_stop(connection->avrcp_cid); 985 break; 986 case 'L': 987 printf(" - pause\n"); 988 status = avrcp_controller_pause(connection->avrcp_cid); 989 break; 990 case 'u': 991 printf(" - start fast forward\n"); 992 status = avrcp_controller_press_and_hold_fast_forward(connection->avrcp_cid); 993 break; 994 case 'U': 995 printf(" - stop fast forward\n"); 996 status = avrcp_controller_release_press_and_hold_cmd(connection->avrcp_cid); 997 break; 998 case 'n': 999 printf(" - start rewind\n"); 1000 status = avrcp_controller_press_and_hold_rewind(connection->avrcp_cid); 1001 break; 1002 case 'N': 1003 printf(" - stop rewind\n"); 1004 status = avrcp_controller_release_press_and_hold_cmd(connection->avrcp_cid); 1005 break; 1006 case 'i': 1007 printf(" - forward\n"); 1008 status = avrcp_controller_forward(connection->avrcp_cid); 1009 break; 1010 case 'I': 1011 printf(" - backward\n"); 1012 status = avrcp_controller_backward(connection->avrcp_cid); 1013 break; 1014 case 'M': 1015 printf(" - mute\n"); 1016 status = avrcp_controller_mute(connection->avrcp_cid); 1017 break; 1018 case 'r': 1019 printf(" - skip\n"); 1020 status = avrcp_controller_skip(connection->avrcp_cid); 1021 break; 1022 case 'q': 1023 printf(" - query repeat and shuffle mode\n"); 1024 status = avrcp_controller_query_shuffle_and_repeat_modes(connection->avrcp_cid); 1025 break; 1026 case 'v': 1027 printf(" - repeat single track\n"); 1028 status = avrcp_controller_set_repeat_mode(connection->avrcp_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 1029 break; 1030 case 'x': 1031 printf(" - repeat all tracks\n"); 1032 status = avrcp_controller_set_repeat_mode(connection->avrcp_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 1033 break; 1034 case 'X': 1035 printf(" - disable repeat mode\n"); 1036 status = avrcp_controller_set_repeat_mode(connection->avrcp_cid, AVRCP_REPEAT_MODE_OFF); 1037 break; 1038 case 'z': 1039 printf(" - shuffle all tracks\n"); 1040 status = avrcp_controller_set_shuffle_mode(connection->avrcp_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 1041 break; 1042 case 'Z': 1043 printf(" - disable shuffle mode\n"); 1044 status = avrcp_controller_set_shuffle_mode(connection->avrcp_cid, AVRCP_SHUFFLE_MODE_OFF); 1045 break; 1046 case 'a': 1047 printf("AVRCP: enable notification TRACK_CHANGED\n"); 1048 avrcp_controller_enable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 1049 break; 1050 case 'A': 1051 printf("AVRCP: disable notification TRACK_CHANGED\n"); 1052 avrcp_controller_disable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 1053 break; 1054 case 'R': 1055 printf("AVRCP: enable notification PLAYBACK_POS_CHANGED\n"); 1056 avrcp_controller_enable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED); 1057 break; 1058 case 'P': 1059 printf("AVRCP: disable notification PLAYBACK_POS_CHANGED\n"); 1060 avrcp_controller_disable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED); 1061 break; 1062 case 's': 1063 printf("AVRCP: send long button press REWIND\n"); 1064 avrcp_controller_start_press_and_hold_cmd(connection->avrcp_cid, AVRCP_OPERATION_ID_REWIND); 1065 break; 1066 case 'S': 1067 printf("AVRCP: release long button press REWIND\n"); 1068 avrcp_controller_release_press_and_hold_cmd(connection->avrcp_cid); 1069 break; 1070 default: 1071 show_usage(); 1072 return; 1073 } 1074 if (status != ERROR_CODE_SUCCESS){ 1075 printf("Could not perform command, status 0x%02x\n", status); 1076 } 1077 } 1078 #endif 1079 1080 int btstack_main(int argc, const char * argv[]); 1081 int btstack_main(int argc, const char * argv[]){ 1082 UNUSED(argc); 1083 (void)argv; 1084 1085 a2dp_and_avrcp_setup(); 1086 1087 #ifdef HAVE_BTSTACK_STDIN 1088 // parse human-readable Bluetooth address 1089 sscanf_bd_addr(device_addr_string, device_addr); 1090 btstack_stdin_setup(stdin_process); 1091 #endif 1092 1093 // turn on! 1094 printf("Starting BTstack ...\n"); 1095 hci_power_control(HCI_POWER_ON); 1096 return 0; 1097 } 1098 /* EXAMPLE_END */ 1099