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 // stream endpoint (static) 158 uint8_t a2dp_local_seid; 159 uint8_t media_sbc_codec_configuration[4]; 160 // connection info (dynamic) 161 bd_addr_t addr; 162 uint16_t a2dp_cid; 163 uint16_t avrcp_cid; 164 media_codec_configuration_sbc_t sbc_configuration; 165 } source_connection_t; 166 static source_connection_t source_connection; 167 168 /* @section Main Application Setup 169 * 170 * @text The Listing MainConfiguration shows how to set up AD2P Sink and AVRCP services. 171 * Besides calling init() method for each service, you'll also need to register several packet handlers: 172 * - hci_packet_handler - handles legacy pairing, here by using fixed '0000' pin code. 173 * - 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). 174 * - 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. 175 * - avrcp_packet_handler - receives connect/disconnect event. 176 * - avrcp_controller_packet_handler - receives answers for sent AVRCP commands. 177 * - avrcp_target_packet_handler - receives AVRCP commands, and registered notifications. 178 * - 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. 179 * 180 * @text To announce A2DP Sink and AVRCP services, you need to create corresponding 181 * SDP records and register them with the SDP service. 182 * 183 * @text Note, currently only the SBC codec is supported. 184 * If you want to store the audio data in a file, you'll need to define STORE_TO_WAV_FILE. 185 * 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. 186 * The initialization of the SBC decoder requires a callback that handles PCM data: 187 * - 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. 188 */ 189 190 /* LISTING_START(MainConfiguration): Setup Audio Sink and AVRCP services */ 191 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 192 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * packet, uint16_t event_size); 193 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size); 194 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 195 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 196 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 197 #ifdef HAVE_BTSTACK_STDIN 198 static void stdin_process(char cmd); 199 #endif 200 201 static int a2dp_and_avrcp_setup(void){ 202 203 l2cap_init(); 204 205 #ifdef ENABLE_BLE 206 // Initialize LE Security Manager. Needed for cross-transport key derivation 207 sm_init(); 208 #endif 209 210 // Initialize AVDTP Sink 211 a2dp_sink_init(); 212 a2dp_sink_register_packet_handler(&a2dp_sink_packet_handler); 213 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 214 215 // Create stream endpoint 216 source_connection_t * connection = &source_connection; 217 avdtp_stream_endpoint_t * local_stream_endpoint = a2dp_sink_create_stream_endpoint(AVDTP_AUDIO, 218 AVDTP_CODEC_SBC, media_sbc_codec_capabilities, sizeof(media_sbc_codec_capabilities), 219 connection->media_sbc_codec_configuration, sizeof(connection->media_sbc_codec_configuration)); 220 if (!local_stream_endpoint){ 221 printf("A2DP Sink: not enough memory to create local stream endpoint\n"); 222 return 1; 223 } 224 225 // Store stream enpoint's SEP ID, as it is used by A2DP API to identify the stream endpoint 226 connection->a2dp_local_seid = avdtp_local_seid(local_stream_endpoint); 227 228 // Initialize AVRCP service 229 avrcp_init(); 230 avrcp_register_packet_handler(&avrcp_packet_handler); 231 232 // Initialize AVRCP Controller 233 avrcp_controller_init(); 234 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 235 236 // Initialize AVRCP Target 237 avrcp_target_init(); 238 avrcp_target_register_packet_handler(&avrcp_target_packet_handler); 239 240 // Initialize SDP 241 sdp_init(); 242 243 // Create A2DP Sink service record and register it with SDP 244 memset(sdp_avdtp_sink_service_buffer, 0, sizeof(sdp_avdtp_sink_service_buffer)); 245 a2dp_sink_create_sdp_record(sdp_avdtp_sink_service_buffer, 0x10001, AVDTP_SINK_FEATURE_MASK_HEADPHONE, NULL, NULL); 246 sdp_register_service(sdp_avdtp_sink_service_buffer); 247 248 // Create AVRCP Controller service record and register it with SDP. We send Category 1 commands to the media player, e.g. play/pause 249 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 250 uint16_t controller_supported_features = AVRCP_FEATURE_MASK_CATEGORY_PLAYER_OR_RECORDER; 251 #ifdef AVRCP_BROWSING_ENABLED 252 controller_supported_features |= AVRCP_FEATURE_MASK_BROWSING; 253 #endif 254 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10002, controller_supported_features, NULL, NULL); 255 sdp_register_service(sdp_avrcp_controller_service_buffer); 256 257 // Create AVRCP Target service record and register it with SDP. We receive Category 2 commands from the media player, e.g. volume up/down 258 memset(sdp_avrcp_target_service_buffer, 0, sizeof(sdp_avrcp_target_service_buffer)); 259 uint16_t target_supported_features = AVRCP_FEATURE_MASK_CATEGORY_MONITOR_OR_AMPLIFIER; 260 avrcp_target_create_sdp_record(sdp_avrcp_target_service_buffer, 0x10003, target_supported_features, NULL, NULL); 261 sdp_register_service(sdp_avrcp_target_service_buffer); 262 263 // Create Device ID (PnP) service record and register it with SDP 264 memset(device_id_sdp_service_buffer, 0, sizeof(device_id_sdp_service_buffer)); 265 device_id_create_sdp_record(device_id_sdp_service_buffer, 0x10004, DEVICE_ID_VENDOR_ID_SOURCE_BLUETOOTH, BLUETOOTH_COMPANY_ID_BLUEKITCHEN_GMBH, 1, 1); 266 sdp_register_service(device_id_sdp_service_buffer); 267 268 // Set local name with a template Bluetooth address, that will be automatically 269 // replaced with an actual address once it is available, i.e. when BTstack boots 270 // up and starts talking to a Bluetooth module. 271 gap_set_local_name("A2DP Sink Demo 00:00:00:00:00:00"); 272 273 // allot to show up in Bluetooth inquiry 274 gap_discoverable_control(1); 275 276 // Service Class: Audio, Major Device Class: Audio, Minor: Loudspeaker 277 gap_set_class_of_device(0x200414); 278 279 // allow for role switch in general and sniff mode 280 gap_set_default_link_policy_settings( LM_LINK_POLICY_ENABLE_ROLE_SWITCH | LM_LINK_POLICY_ENABLE_SNIFF_MODE ); 281 282 // allow for role switch on outgoing connections - this allows A2DP Source, e.g. smartphone, to become master when we re-connect to it 283 gap_set_allow_role_switch(true); 284 285 // Register for HCI events 286 hci_event_callback_registration.callback = &hci_packet_handler; 287 hci_add_event_handler(&hci_event_callback_registration); 288 289 #ifdef HAVE_POSIX_FILE_IO 290 if (!btstack_audio_sink_get_instance()){ 291 printf("No audio playback.\n"); 292 } else { 293 printf("Audio playback supported.\n"); 294 } 295 #ifdef STORE_TO_WAV_FILE 296 printf("Audio will be stored to \'%s\' file.\n", wav_filename); 297 #endif 298 #endif 299 return 0; 300 } 301 /* LISTING_END */ 302 303 static void playback_handler(int16_t * buffer, uint16_t num_audio_frames){ 304 305 #ifdef STORE_TO_WAV_FILE 306 int wav_samples = num_audio_frames * NUM_CHANNELS; 307 int16_t * wav_buffer = buffer; 308 #endif 309 310 // called from lower-layer but guaranteed to be on main thread 311 if (sbc_frame_size == 0){ 312 memset(buffer, 0, num_audio_frames * BYTES_PER_FRAME); 313 return; 314 } 315 316 // first fill from resampled audio 317 uint32_t bytes_read; 318 btstack_ring_buffer_read(&decoded_audio_ring_buffer, (uint8_t *) buffer, num_audio_frames * BYTES_PER_FRAME, &bytes_read); 319 buffer += bytes_read / NUM_CHANNELS; 320 num_audio_frames -= bytes_read / BYTES_PER_FRAME; 321 322 // then start decoding sbc frames using request_* globals 323 request_buffer = buffer; 324 request_frames = num_audio_frames; 325 while (request_frames && btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) >= sbc_frame_size){ 326 // decode frame 327 uint8_t sbc_frame[MAX_SBC_FRAME_SIZE]; 328 btstack_ring_buffer_read(&sbc_frame_ring_buffer, sbc_frame, sbc_frame_size, &bytes_read); 329 btstack_sbc_decoder_process_data(&state, 0, sbc_frame, sbc_frame_size); 330 } 331 332 #ifdef STORE_TO_WAV_FILE 333 audio_frame_count += num_audio_frames; 334 wav_writer_write_int16(wav_samples, wav_buffer); 335 #endif 336 } 337 338 static void handle_pcm_data(int16_t * data, int num_audio_frames, int num_channels, int sample_rate, void * context){ 339 UNUSED(sample_rate); 340 UNUSED(context); 341 UNUSED(num_channels); // must be stereo == 2 342 343 const btstack_audio_sink_t * audio_sink = btstack_audio_sink_get_instance(); 344 if (!audio_sink){ 345 #ifdef STORE_TO_WAV_FILE 346 audio_frame_count += num_audio_frames; 347 wav_writer_write_int16(num_audio_frames * NUM_CHANNELS, data); 348 #endif 349 return; 350 } 351 352 // resample into request buffer - add some additional space for resampling 353 int16_t output_buffer[(128+16) * NUM_CHANNELS]; // 16 * 8 * 2 354 uint32_t resampled_frames = btstack_resample_block(&resample_instance, data, num_audio_frames, output_buffer); 355 356 // store data in btstack_audio buffer first 357 int frames_to_copy = btstack_min(resampled_frames, request_frames); 358 memcpy(request_buffer, output_buffer, frames_to_copy * BYTES_PER_FRAME); 359 request_frames -= frames_to_copy; 360 request_buffer += frames_to_copy * NUM_CHANNELS; 361 362 // and rest in ring buffer 363 int frames_to_store = resampled_frames - frames_to_copy; 364 if (frames_to_store){ 365 int status = btstack_ring_buffer_write(&decoded_audio_ring_buffer, (uint8_t *)&output_buffer[frames_to_copy * NUM_CHANNELS], frames_to_store * BYTES_PER_FRAME); 366 if (status){ 367 printf("Error storing samples in PCM ring buffer!!!\n"); 368 } 369 } 370 } 371 372 static int media_processing_init(media_codec_configuration_sbc_t configuration){ 373 if (media_initialized) return 0; 374 375 btstack_sbc_decoder_init(&state, mode, handle_pcm_data, NULL); 376 377 #ifdef STORE_TO_WAV_FILE 378 wav_writer_open(wav_filename, configuration.num_channels, configuration.sampling_frequency); 379 #endif 380 381 btstack_ring_buffer_init(&sbc_frame_ring_buffer, sbc_frame_storage, sizeof(sbc_frame_storage)); 382 btstack_ring_buffer_init(&decoded_audio_ring_buffer, decoded_audio_storage, sizeof(decoded_audio_storage)); 383 btstack_resample_init(&resample_instance, configuration.num_channels); 384 385 // setup audio playback 386 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 387 if (audio){ 388 audio->init(NUM_CHANNELS, configuration.sampling_frequency, &playback_handler); 389 } 390 391 audio_stream_started = 0; 392 media_initialized = 1; 393 return 0; 394 } 395 396 static void media_processing_start(void){ 397 if (!media_initialized) return; 398 // setup audio playback 399 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 400 if (audio){ 401 audio->start_stream(); 402 } 403 audio_stream_started = 1; 404 } 405 406 static void media_processing_pause(void){ 407 if (!media_initialized) return; 408 // stop audio playback 409 audio_stream_started = 0; 410 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 411 if (audio){ 412 audio->stop_stream(); 413 } 414 } 415 416 static void media_processing_close(void){ 417 if (!media_initialized) return; 418 media_initialized = 0; 419 audio_stream_started = 0; 420 sbc_frame_size = 0; 421 422 #ifdef STORE_TO_WAV_FILE 423 wav_writer_close(); 424 uint32_t total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 425 426 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); 427 printf("WAV Writer: Wrote %u audio frames to wav file: %s\n", audio_frame_count, wav_filename); 428 #endif 429 430 // stop audio playback 431 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 432 if (audio){ 433 printf("close stream\n"); 434 audio->close(); 435 } 436 } 437 438 /* @section Handle Media Data Packet 439 * 440 * @text Here the audio data, are received through the handle_l2cap_media_data_packet callback. 441 * Currently, only the SBC media codec is supported. Hence, the media data consists of the media packet header and the SBC packet. 442 * 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). 443 * If the audio stream wasn't started already and there are enough SBC frames in the ring buffer, start playback. 444 */ 445 446 static int read_media_data_header(uint8_t * packet, int size, int * offset, avdtp_media_packet_header_t * media_header); 447 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header); 448 449 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size){ 450 UNUSED(seid); 451 int pos = 0; 452 453 avdtp_media_packet_header_t media_header; 454 if (!read_media_data_header(packet, size, &pos, &media_header)) return; 455 456 avdtp_sbc_codec_header_t sbc_header; 457 if (!read_sbc_header(packet, size, &pos, &sbc_header)) return; 458 459 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 460 // process data right away if there's no audio implementation active, e.g. on posix systems to store as .wav 461 if (!audio){ 462 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 463 return; 464 } 465 466 // store sbc frame size for buffer management 467 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 468 469 int status = btstack_ring_buffer_write(&sbc_frame_ring_buffer, packet+pos, size-pos); 470 if (status != ERROR_CODE_SUCCESS){ 471 printf("Error storing samples in SBC ring buffer!!!\n"); 472 } 473 474 // decide on audio sync drift based on number of sbc frames in queue 475 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) / sbc_frame_size; 476 uint32_t resampling_factor; 477 478 // nominal factor (fixed-point 2^16) and compensation offset 479 uint32_t nominal_factor = 0x10000; 480 uint32_t compensation = 0x00100; 481 482 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 483 resampling_factor = nominal_factor - compensation; // stretch samples 484 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 485 resampling_factor = nominal_factor; // nothing to do 486 } else { 487 resampling_factor = nominal_factor + compensation; // compress samples 488 } 489 490 btstack_resample_set_factor(&resample_instance, resampling_factor); 491 492 // start stream if enough frames buffered 493 if (!audio_stream_started && sbc_frames_in_buffer >= OPTIMAL_FRAMES_MIN){ 494 media_processing_start(); 495 } 496 } 497 498 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header){ 499 int sbc_header_len = 12; // without crc 500 int pos = *offset; 501 502 if (size - pos < sbc_header_len){ 503 printf("Not enough data to read SBC header, expected %d, received %d\n", sbc_header_len, size-pos); 504 return 0; 505 } 506 507 sbc_header->fragmentation = get_bit16(packet[pos], 7); 508 sbc_header->starting_packet = get_bit16(packet[pos], 6); 509 sbc_header->last_packet = get_bit16(packet[pos], 5); 510 sbc_header->num_frames = packet[pos] & 0x0f; 511 pos++; 512 *offset = pos; 513 return 1; 514 } 515 516 static int read_media_data_header(uint8_t *packet, int size, int *offset, avdtp_media_packet_header_t *media_header){ 517 int media_header_len = 12; // without crc 518 int pos = *offset; 519 520 if (size - pos < media_header_len){ 521 printf("Not enough data to read media packet header, expected %d, received %d\n", media_header_len, size-pos); 522 return 0; 523 } 524 525 media_header->version = packet[pos] & 0x03; 526 media_header->padding = get_bit16(packet[pos],2); 527 media_header->extension = get_bit16(packet[pos],3); 528 media_header->csrc_count = (packet[pos] >> 4) & 0x0F; 529 pos++; 530 531 media_header->marker = get_bit16(packet[pos],0); 532 media_header->payload_type = (packet[pos] >> 1) & 0x7F; 533 pos++; 534 535 media_header->sequence_number = big_endian_read_16(packet, pos); 536 pos+=2; 537 538 media_header->timestamp = big_endian_read_32(packet, pos); 539 pos+=4; 540 541 media_header->synchronization_source = big_endian_read_32(packet, pos); 542 pos+=4; 543 *offset = pos; 544 return 1; 545 } 546 547 static void dump_sbc_configuration(media_codec_configuration_sbc_t * configuration){ 548 printf(" - num_channels: %d\n", configuration->num_channels); 549 printf(" - sampling_frequency: %d\n", configuration->sampling_frequency); 550 printf(" - channel_mode: %d\n", configuration->channel_mode); 551 printf(" - block_length: %d\n", configuration->block_length); 552 printf(" - subbands: %d\n", configuration->subbands); 553 printf(" - allocation_method: %d\n", configuration->allocation_method); 554 printf(" - bitpool_value [%d, %d] \n", configuration->min_bitpool_value, configuration->max_bitpool_value); 555 printf("\n"); 556 } 557 558 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 559 UNUSED(channel); 560 UNUSED(size); 561 uint16_t local_cid; 562 uint8_t status; 563 bd_addr_t address; 564 565 source_connection_t * connection = &source_connection; 566 567 if (packet_type != HCI_EVENT_PACKET) return; 568 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 569 switch (packet[2]){ 570 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 571 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 572 status = avrcp_subevent_connection_established_get_status(packet); 573 if (status != ERROR_CODE_SUCCESS){ 574 printf("AVRCP: Connection failed: status 0x%02x\n", status); 575 connection->avrcp_cid = 0; 576 return; 577 } 578 579 connection->avrcp_cid = local_cid; 580 avrcp_subevent_connection_established_get_bd_addr(packet, address); 581 printf("AVRCP: Connected to %s, cid 0x%02x\n", bd_addr_to_str(address), connection->avrcp_cid); 582 583 avrcp_target_support_event(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED); 584 avrcp_target_support_event(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED); 585 avrcp_target_battery_status_changed(connection->avrcp_cid, battery_status); 586 587 // automatically enable notifications 588 avrcp_controller_enable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 589 avrcp_controller_enable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 590 avrcp_controller_enable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 591 return; 592 } 593 594 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 595 printf("AVRCP: Channel released: cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 596 connection->avrcp_cid = 0; 597 return; 598 default: 599 break; 600 } 601 } 602 603 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 604 UNUSED(channel); 605 UNUSED(size); 606 607 // helper to print c strings 608 uint8_t avrcp_subevent_value[256]; 609 610 source_connection_t * connection = &source_connection; 611 612 if (packet_type != HCI_EVENT_PACKET) return; 613 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 614 if (connection->avrcp_cid == 0) return; 615 616 memset(avrcp_subevent_value, 0, sizeof(avrcp_subevent_value)); 617 switch (packet[2]){ 618 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED: 619 printf("AVRCP Controller: Playback position changed, position %d ms\n", (unsigned int) avrcp_subevent_notification_playback_pos_changed_get_playback_position_ms(packet)); 620 break; 621 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED: 622 printf("AVRCP Controller: Playback status changed %s\n", avrcp_play_status2str(avrcp_subevent_notification_playback_status_changed_get_play_status(packet))); 623 return; 624 case AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED: 625 printf("AVRCP Controller: Playing content changed\n"); 626 return; 627 case AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED: 628 printf("AVRCP Controller: Track changed\n"); 629 return; 630 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 631 printf("AVRCP Controller: Changed\n"); 632 return; 633 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 634 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 635 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 636 printf("AVRCP Controller: %s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 637 break; 638 } 639 case AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO: 640 printf("AVRCP Controller: Track: %d\n", avrcp_subevent_now_playing_track_info_get_track(packet)); 641 break; 642 643 case AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO: 644 printf("AVRCP Controller: Total Tracks: %d\n", avrcp_subevent_now_playing_total_tracks_info_get_total_tracks(packet)); 645 break; 646 647 case AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO: 648 if (avrcp_subevent_now_playing_title_info_get_value_len(packet) > 0){ 649 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_title_info_get_value(packet), avrcp_subevent_now_playing_title_info_get_value_len(packet)); 650 printf("AVRCP Controller: Title: %s\n", avrcp_subevent_value); 651 } 652 break; 653 654 case AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO: 655 if (avrcp_subevent_now_playing_artist_info_get_value_len(packet) > 0){ 656 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_artist_info_get_value(packet), avrcp_subevent_now_playing_artist_info_get_value_len(packet)); 657 printf("AVRCP Controller: Artist: %s\n", avrcp_subevent_value); 658 } 659 break; 660 661 case AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO: 662 if (avrcp_subevent_now_playing_album_info_get_value_len(packet) > 0){ 663 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_album_info_get_value(packet), avrcp_subevent_now_playing_album_info_get_value_len(packet)); 664 printf("AVRCP Controller: Album: %s\n", avrcp_subevent_value); 665 } 666 break; 667 668 case AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO: 669 if (avrcp_subevent_now_playing_genre_info_get_value_len(packet) > 0){ 670 memcpy(avrcp_subevent_value, avrcp_subevent_now_playing_genre_info_get_value(packet), avrcp_subevent_now_playing_genre_info_get_value_len(packet)); 671 printf("AVRCP Controller: Genre: %s\n", avrcp_subevent_value); 672 } 673 break; 674 675 case AVRCP_SUBEVENT_PLAY_STATUS: 676 printf("AVRCP Controller: Song length %"PRIu32" ms, Song position %"PRIu32" ms, Play status %s\n", 677 avrcp_subevent_play_status_get_song_length(packet), 678 avrcp_subevent_play_status_get_song_position(packet), 679 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 680 break; 681 682 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 683 printf("AVRCP Controller: %s complete\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 684 break; 685 686 case AVRCP_SUBEVENT_OPERATION_START: 687 printf("AVRCP Controller: %s start\n", avrcp_operation2str(avrcp_subevent_operation_start_get_operation_id(packet))); 688 break; 689 690 case AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END: 691 printf("AVRCP Controller: Track reached end\n"); 692 break; 693 694 case AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE: 695 printf("AVRCP Controller: Set Player App Value %s\n", avrcp_ctype2str(avrcp_subevent_player_application_value_response_get_command_type(packet))); 696 break; 697 698 default: 699 break; 700 } 701 } 702 703 static void avrcp_volume_changed(uint8_t volume){ 704 const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance(); 705 if (audio){ 706 audio->set_volume(volume); 707 } 708 } 709 710 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 711 UNUSED(channel); 712 UNUSED(size); 713 714 if (packet_type != HCI_EVENT_PACKET) return; 715 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 716 717 uint8_t volume; 718 char const * button_state; 719 avrcp_operation_id_t operation_id; 720 721 switch (packet[2]){ 722 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 723 volume = avrcp_subevent_notification_volume_changed_get_absolute_volume(packet); 724 volume_percentage = volume * 100 / 127; 725 printf("AVRCP Target : Volume set to %d%% (%d)\n", volume_percentage, volume); 726 avrcp_volume_changed(volume); 727 break; 728 729 case AVRCP_SUBEVENT_OPERATION: 730 operation_id = avrcp_subevent_operation_get_operation_id(packet); 731 button_state = avrcp_subevent_operation_get_button_pressed(packet) > 0 ? "PRESS" : "RELEASE"; 732 switch (operation_id){ 733 case AVRCP_OPERATION_ID_VOLUME_UP: 734 printf("AVRCP Target : VOLUME UP (%s)\n", button_state); 735 break; 736 case AVRCP_OPERATION_ID_VOLUME_DOWN: 737 printf("AVRCP Target : VOLUME DOWN (%s)\n", button_state); 738 break; 739 default: 740 return; 741 } 742 break; 743 default: 744 printf("AVRCP Target : Event 0x%02x is not parsed\n", packet[2]); 745 break; 746 } 747 } 748 749 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 750 UNUSED(channel); 751 UNUSED(size); 752 if (packet_type != HCI_EVENT_PACKET) return; 753 if (hci_event_packet_get_type(packet) == HCI_EVENT_PIN_CODE_REQUEST) { 754 bd_addr_t address; 755 printf("Pin code request - using '0000'\n"); 756 hci_event_pin_code_request_get_bd_addr(packet, address); 757 gap_pin_code_response(address, "0000"); 758 } 759 } 760 761 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 762 UNUSED(channel); 763 UNUSED(size); 764 bd_addr_t address; 765 uint8_t status; 766 767 uint8_t allocation_method; 768 769 if (packet_type != HCI_EVENT_PACKET) return; 770 if (hci_event_packet_get_type(packet) != HCI_EVENT_A2DP_META) return; 771 772 source_connection_t * connection = &source_connection; 773 774 switch (packet[2]){ 775 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 776 printf("A2DP Sink : Received non SBC codec - not implemented\n"); 777 break; 778 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 779 printf("A2DP Sink : Received SBC codec configuration\n"); 780 connection->sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 781 connection->sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 782 connection->sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 783 connection->sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 784 connection->sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 785 connection->sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 786 connection->sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 787 788 allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 789 790 // Adapt Bluetooth spec definition to SBC Encoder expected input 791 connection->sbc_configuration.allocation_method = (btstack_sbc_allocation_method_t)(allocation_method - 1); 792 793 switch (a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet)){ 794 case AVDTP_CHANNEL_MODE_JOINT_STEREO: 795 connection->sbc_configuration.channel_mode = SBC_CHANNEL_MODE_JOINT_STEREO; 796 break; 797 case AVDTP_CHANNEL_MODE_STEREO: 798 connection->sbc_configuration.channel_mode = SBC_CHANNEL_MODE_STEREO; 799 break; 800 case AVDTP_CHANNEL_MODE_DUAL_CHANNEL: 801 connection->sbc_configuration.channel_mode = SBC_CHANNEL_MODE_DUAL_CHANNEL; 802 break; 803 case AVDTP_CHANNEL_MODE_MONO: 804 connection->sbc_configuration.channel_mode = SBC_CHANNEL_MODE_MONO; 805 break; 806 default: 807 btstack_assert(false); 808 break; 809 } 810 dump_sbc_configuration(&connection->sbc_configuration); 811 812 if (connection->sbc_configuration.reconfigure){ 813 media_processing_close(); 814 } 815 // prepare media processing 816 media_processing_init(connection->sbc_configuration); 817 break; 818 } 819 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 820 a2dp_subevent_stream_established_get_bd_addr(packet, connection->addr); 821 822 status = a2dp_subevent_stream_established_get_status(packet); 823 if (status != ERROR_CODE_SUCCESS){ 824 printf("A2DP Sink : Streaming connection failed, status 0x%02x\n", status); 825 break; 826 } 827 828 connection->a2dp_cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 829 printf("A2DP Sink : Streaming connection is established, address %s, cid 0x%02X, local seid %d\n", 830 bd_addr_to_str(address), connection->a2dp_cid, connection->a2dp_local_seid); 831 #ifdef HAVE_BTSTACK_STDIN 832 // use address for outgoing connections 833 memcpy(device_addr, address, 6); 834 #endif 835 break; 836 837 #ifdef ENABLE_AVDTP_ACCEPTOR_EXPLICIT_START_STREAM_CONFIRMATION 838 case A2DP_SUBEVENT_START_STREAM_REQUESTED: 839 printf("A2DP Sink : Explicit Accept to start stream, local_seid 0x%02x\n", a2dp_subevent_start_stream_requested_get_local_seid(packet)); 840 a2dp_sink_start_stream_accept(a2dp_cid, a2dp_local_seid); 841 break; 842 #endif 843 case A2DP_SUBEVENT_STREAM_STARTED: 844 printf("A2DP Sink : Stream started\n"); 845 // audio stream is started when buffer reaches minimal level 846 break; 847 848 case A2DP_SUBEVENT_STREAM_SUSPENDED: 849 printf("A2DP Sink : Stream paused\n"); 850 media_processing_pause(); 851 break; 852 853 case A2DP_SUBEVENT_STREAM_RELEASED: 854 printf("A2DP Sink : Stream released\n"); 855 media_processing_close(); 856 break; 857 858 case A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 859 printf("A2DP Sink : Signaling connection released\n"); 860 media_processing_close(); 861 break; 862 863 default: 864 break; 865 } 866 } 867 868 #ifdef HAVE_BTSTACK_STDIN 869 static void show_usage(void){ 870 bd_addr_t iut_address; 871 gap_local_bd_addr(iut_address); 872 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 873 printf("b - AVDTP Sink create connection to addr %s\n", bd_addr_to_str(device_addr)); 874 printf("B - AVDTP Sink disconnect\n"); 875 printf("c - AVRCP create connection to addr %s\n", bd_addr_to_str(device_addr)); 876 printf("C - AVRCP disconnect\n"); 877 878 printf("w - delay report\n"); 879 880 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 881 printf("O - get play status\n"); 882 printf("j - get now playing info\n"); 883 printf("k - play\n"); 884 printf("K - stop\n"); 885 printf("L - pause\n"); 886 printf("u - start fast forward\n"); 887 printf("U - stop fast forward\n"); 888 printf("n - start rewind\n"); 889 printf("N - stop rewind\n"); 890 printf("i - forward\n"); 891 printf("I - backward\n"); 892 printf("M - mute\n"); 893 printf("r - skip\n"); 894 printf("q - query repeat and shuffle mode\n"); 895 printf("v - repeat single track\n"); 896 printf("x - repeat all tracks\n"); 897 printf("X - disable repeat mode\n"); 898 printf("z - shuffle all tracks\n"); 899 printf("Z - disable shuffle mode\n"); 900 901 printf("a/A - register/deregister TRACK_CHANGED\n"); 902 printf("R/P - register/deregister PLAYBACK_POS_CHANGED\n"); 903 904 printf("s/S - send/release long button press REWIND\n"); 905 906 printf("\n--- Volume and Battery Control ---\n"); 907 printf("t - volume up for 10 percent\n"); 908 printf("T - volume down for 10 percent\n"); 909 printf("V - toggle Battery status from AVRCP_BATTERY_STATUS_NORMAL to AVRCP_BATTERY_STATUS_FULL_CHARGE\n"); 910 printf("---\n"); 911 } 912 #endif 913 914 #ifdef HAVE_BTSTACK_STDIN 915 static void stdin_process(char cmd){ 916 uint8_t status = ERROR_CODE_SUCCESS; 917 uint8_t volume; 918 avrcp_battery_status_t old_battery_status; 919 920 source_connection_t * connection = &source_connection; 921 922 switch (cmd){ 923 case 'b': 924 status = a2dp_sink_establish_stream(device_addr, connection->a2dp_local_seid, &connection->a2dp_cid); 925 printf(" - Create AVDTP connection to addr %s, and local seid %d, expected cid 0x%02x.\n", 926 bd_addr_to_str(device_addr), connection->a2dp_local_seid, connection->a2dp_cid); 927 break; 928 case 'B': 929 printf(" - AVDTP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 930 a2dp_sink_disconnect(connection->a2dp_cid); 931 break; 932 case 'c': 933 printf(" - Create AVRCP connection to addr %s.\n", bd_addr_to_str(device_addr)); 934 status = avrcp_connect(device_addr, &connection->avrcp_cid); 935 break; 936 case 'C': 937 printf(" - AVRCP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 938 status = avrcp_disconnect(connection->avrcp_cid); 939 break; 940 941 case '\n': 942 case '\r': 943 break; 944 case 'w': 945 printf("Send delay report\n"); 946 avdtp_sink_delay_report(connection->a2dp_cid, connection->a2dp_local_seid, 100); 947 break; 948 // Volume Control 949 case 't': 950 volume_percentage = volume_percentage <= 90 ? volume_percentage + 10 : 100; 951 volume = volume_percentage * 127 / 100; 952 printf(" - volume up for 10 percent, %d%% (%d) \n", volume_percentage, volume); 953 status = avrcp_target_volume_changed(connection->avrcp_cid, volume); 954 avrcp_volume_changed(volume); 955 break; 956 case 'T': 957 volume_percentage = volume_percentage >= 10 ? volume_percentage - 10 : 0; 958 volume = volume_percentage * 127 / 100; 959 printf(" - volume down for 10 percent, %d%% (%d) \n", volume_percentage, volume); 960 status = avrcp_target_volume_changed(connection->avrcp_cid, volume); 961 avrcp_volume_changed(volume); 962 break; 963 case 'V': 964 old_battery_status = battery_status; 965 966 if (battery_status < AVRCP_BATTERY_STATUS_FULL_CHARGE){ 967 battery_status = (avrcp_battery_status_t)((uint8_t) battery_status + 1); 968 } else { 969 battery_status = AVRCP_BATTERY_STATUS_NORMAL; 970 } 971 printf(" - toggle battery value, old %d, new %d\n", old_battery_status, battery_status); 972 status = avrcp_target_battery_status_changed(connection->avrcp_cid, battery_status); 973 break; 974 case 'O': 975 printf(" - get play status\n"); 976 status = avrcp_controller_get_play_status(connection->avrcp_cid); 977 break; 978 case 'j': 979 printf(" - get now playing info\n"); 980 status = avrcp_controller_get_now_playing_info(connection->avrcp_cid); 981 break; 982 case 'k': 983 printf(" - play\n"); 984 status = avrcp_controller_play(connection->avrcp_cid); 985 break; 986 case 'K': 987 printf(" - stop\n"); 988 status = avrcp_controller_stop(connection->avrcp_cid); 989 break; 990 case 'L': 991 printf(" - pause\n"); 992 status = avrcp_controller_pause(connection->avrcp_cid); 993 break; 994 case 'u': 995 printf(" - start fast forward\n"); 996 status = avrcp_controller_press_and_hold_fast_forward(connection->avrcp_cid); 997 break; 998 case 'U': 999 printf(" - stop fast forward\n"); 1000 status = avrcp_controller_release_press_and_hold_cmd(connection->avrcp_cid); 1001 break; 1002 case 'n': 1003 printf(" - start rewind\n"); 1004 status = avrcp_controller_press_and_hold_rewind(connection->avrcp_cid); 1005 break; 1006 case 'N': 1007 printf(" - stop rewind\n"); 1008 status = avrcp_controller_release_press_and_hold_cmd(connection->avrcp_cid); 1009 break; 1010 case 'i': 1011 printf(" - forward\n"); 1012 status = avrcp_controller_forward(connection->avrcp_cid); 1013 break; 1014 case 'I': 1015 printf(" - backward\n"); 1016 status = avrcp_controller_backward(connection->avrcp_cid); 1017 break; 1018 case 'M': 1019 printf(" - mute\n"); 1020 status = avrcp_controller_mute(connection->avrcp_cid); 1021 break; 1022 case 'r': 1023 printf(" - skip\n"); 1024 status = avrcp_controller_skip(connection->avrcp_cid); 1025 break; 1026 case 'q': 1027 printf(" - query repeat and shuffle mode\n"); 1028 status = avrcp_controller_query_shuffle_and_repeat_modes(connection->avrcp_cid); 1029 break; 1030 case 'v': 1031 printf(" - repeat single track\n"); 1032 status = avrcp_controller_set_repeat_mode(connection->avrcp_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 1033 break; 1034 case 'x': 1035 printf(" - repeat all tracks\n"); 1036 status = avrcp_controller_set_repeat_mode(connection->avrcp_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 1037 break; 1038 case 'X': 1039 printf(" - disable repeat mode\n"); 1040 status = avrcp_controller_set_repeat_mode(connection->avrcp_cid, AVRCP_REPEAT_MODE_OFF); 1041 break; 1042 case 'z': 1043 printf(" - shuffle all tracks\n"); 1044 status = avrcp_controller_set_shuffle_mode(connection->avrcp_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 1045 break; 1046 case 'Z': 1047 printf(" - disable shuffle mode\n"); 1048 status = avrcp_controller_set_shuffle_mode(connection->avrcp_cid, AVRCP_SHUFFLE_MODE_OFF); 1049 break; 1050 case 'a': 1051 printf("AVRCP: enable notification TRACK_CHANGED\n"); 1052 avrcp_controller_enable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 1053 break; 1054 case 'A': 1055 printf("AVRCP: disable notification TRACK_CHANGED\n"); 1056 avrcp_controller_disable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 1057 break; 1058 case 'R': 1059 printf("AVRCP: enable notification PLAYBACK_POS_CHANGED\n"); 1060 avrcp_controller_enable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED); 1061 break; 1062 case 'P': 1063 printf("AVRCP: disable notification PLAYBACK_POS_CHANGED\n"); 1064 avrcp_controller_disable_notification(connection->avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED); 1065 break; 1066 case 's': 1067 printf("AVRCP: send long button press REWIND\n"); 1068 avrcp_controller_start_press_and_hold_cmd(connection->avrcp_cid, AVRCP_OPERATION_ID_REWIND); 1069 break; 1070 case 'S': 1071 printf("AVRCP: release long button press REWIND\n"); 1072 avrcp_controller_release_press_and_hold_cmd(connection->avrcp_cid); 1073 break; 1074 default: 1075 show_usage(); 1076 return; 1077 } 1078 if (status != ERROR_CODE_SUCCESS){ 1079 printf("Could not perform command, status 0x%02x\n", status); 1080 } 1081 } 1082 #endif 1083 1084 int btstack_main(int argc, const char * argv[]); 1085 int btstack_main(int argc, const char * argv[]){ 1086 UNUSED(argc); 1087 (void)argv; 1088 1089 a2dp_and_avrcp_setup(); 1090 1091 #ifdef HAVE_BTSTACK_STDIN 1092 // parse human-readable Bluetooth address 1093 sscanf_bd_addr(device_addr_string, device_addr); 1094 btstack_stdin_setup(stdin_process); 1095 #endif 1096 1097 // turn on! 1098 printf("Starting BTstack ...\n"); 1099 hci_power_control(HCI_POWER_ON); 1100 return 0; 1101 } 1102 /* EXAMPLE_END */ 1103