1 /* 2 * Copyright (C) 2016 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define __BTSTACK_FILE__ "a2dp_sink_demo.c" 39 40 /* 41 * a2dp_sink_demo.c 42 */ 43 44 // ***************************************************************************** 45 /* EXAMPLE_START(a2dp_sink_demo): Receive audio stream and control its playback. 46 * 47 * @text This A2DP Sink example demonstrates how to use the A2DP Sink service to 48 * receive an audio data stream from a remote A2DP Source device. In addition, 49 * the AVRCP Controller is used to get information on currently played media, 50 * such are title, artist and album, as well as to control the playback, 51 * i.e. to play, stop, repeat, etc. 52 * 53 * @test To test with a remote device, e.g. a mobile phone, 54 * pair from the remote device with the demo, then start playing music on the remote device. 55 * Alternatively, set the device_addr_string to the Bluetooth address of your 56 * remote device in the code, and call connect from the UI. 57 * 58 * @test To controll the playback, tap SPACE on the console to show the available 59 * AVRCP commands. 60 */ 61 // ***************************************************************************** 62 63 #include <inttypes.h> 64 #include <stdint.h> 65 #include <stdio.h> 66 #include <stdlib.h> 67 #include <string.h> 68 69 #include "btstack.h" 70 #include "btstack_resample.h" 71 72 //#define AVRCP_BROWSING_ENABLED 73 74 #ifdef HAVE_BTSTACK_STDIN 75 #include "btstack_stdin.h" 76 #endif 77 78 #include "btstack_ring_buffer.h" 79 80 #ifdef HAVE_POSIX_FILE_IO 81 #include "wav_util.h" 82 #define STORE_SBC_TO_SBC_FILE 83 #define STORE_SBC_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 // SBC Decoder for WAV file or live playback 91 static btstack_sbc_decoder_state_t state; 92 static btstack_sbc_mode_t mode = SBC_MODE_STANDARD; 93 94 // ring buffer for SBC Frames 95 // below 30: add samples, 30-40: fine, above 40: drop samples 96 #define OPTIMAL_FRAMES_MIN 30 97 #define OPTIMAL_FRAMES_MAX 40 98 #define ADDITIONAL_FRAMES 20 99 static uint8_t sbc_frame_storage[(OPTIMAL_FRAMES_MAX + ADDITIONAL_FRAMES) * MAX_SBC_FRAME_SIZE]; 100 static btstack_ring_buffer_t sbc_frame_ring_buffer; 101 static unsigned int sbc_frame_size; 102 103 // rest buffer for not fully used sbc frames, with additional frames for resampling 104 static uint8_t decoded_audio_storage[(128+16) * BYTES_PER_FRAME]; 105 static btstack_ring_buffer_t decoded_audio_ring_buffer; 106 107 // 108 static int audio_stream_started; 109 110 // temp storage of lower-layer request 111 static int16_t * request_buffer; 112 static int request_frames; 113 114 #define STORE_FROM_PLAYBACK 115 116 // WAV File 117 #ifdef STORE_SBC_TO_WAV_FILE 118 static int frame_count = 0; 119 static char * wav_filename = "avdtp_sink.wav"; 120 #endif 121 122 #ifdef STORE_SBC_TO_SBC_FILE 123 static FILE * sbc_file; 124 static char * sbc_filename = "avdtp_sink.sbc"; 125 #endif 126 127 static int volume_percentage = 0; 128 129 typedef struct { 130 // bitmaps 131 uint8_t sampling_frequency_bitmap; 132 uint8_t channel_mode_bitmap; 133 uint8_t block_length_bitmap; 134 uint8_t subbands_bitmap; 135 uint8_t allocation_method_bitmap; 136 uint8_t min_bitpool_value; 137 uint8_t max_bitpool_value; 138 } adtvp_media_codec_information_sbc_t; 139 140 typedef struct { 141 int reconfigure; 142 int num_channels; 143 int sampling_frequency; 144 int channel_mode; 145 int block_length; 146 int subbands; 147 int allocation_method; 148 int min_bitpool_value; 149 int max_bitpool_value; 150 int frames_per_buffer; 151 } avdtp_media_codec_configuration_sbc_t; 152 153 static uint8_t events_num = 1; 154 155 static uint8_t events[] = { 156 AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED 157 }; 158 159 static uint8_t companies_num = 1; 160 static uint8_t companies[] = { 161 0x00, 0x19, 0x58 //BT SIG registered CompanyID 162 }; 163 #ifdef HAVE_BTSTACK_STDIN 164 // pts: static bd_addr_t remote = {0x00, 0x1B, 0xDC, 0x08, 0x0A, 0xA5}; 165 // mac 2013: static const char * device_addr_string = "84:38:35:65:d1:15"; 166 // iPhone 5S: 167 static const char * device_addr_string = "54:E4:3A:26:A2:39"; 168 #endif 169 170 static uint8_t sdp_avdtp_sink_service_buffer[150]; 171 static uint8_t sdp_avrcp_target_service_buffer[150]; 172 static avdtp_media_codec_configuration_sbc_t sbc_configuration; 173 static uint16_t a2dp_cid = 0; 174 static uint8_t a2dp_local_seid = 0; 175 static uint8_t value[100]; 176 177 static btstack_packet_callback_registration_t hci_event_callback_registration; 178 179 static int media_initialized = 0; 180 181 #ifdef HAVE_BTSTACK_STDIN 182 static bd_addr_t device_addr; 183 #endif 184 185 static uint16_t avrcp_controller_cid = 0; 186 static uint16_t avrcp_target_cid = 0; 187 static uint8_t avrcp_connected = 0; 188 static uint8_t sdp_avrcp_controller_service_buffer[200]; 189 190 static uint8_t media_sbc_codec_capabilities[] = { 191 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 192 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 193 2, 53 194 }; 195 196 static uint8_t media_sbc_codec_configuration[] = { 197 (AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 198 (AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 199 2, 53 200 }; 201 202 static btstack_resample_t resample_instance; 203 204 /* @section Main Application Setup 205 * 206 * @text The Listing MainConfiguration shows how to setup AD2P Sink and AVRCP controller services. 207 * To announce A2DP Sink and AVRCP Controller services, you need to create corresponding 208 * SDP records and register them with the SDP service. 209 * You'll also need to register several packet handlers: 210 * - 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). 211 * - handle_l2cap_media_data_packet - used to receive streaming data. If HAVE_PORTAUDIO or STORE_SBC_TO_WAV_FILE directives (check btstack_config.h) are 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. 212 * - stdin_process callback - used to trigger AVRCP commands to the A2DP Source device, such are get now playing info, start, stop, volume control. Requires HAVE_BTSTACK_STDIN. 213 * - avrcp_controller_packet_handler - used to receive answers for AVRCP commands, 214 * 215 * @text Note, currently only the SBC codec is supported. 216 * If you want to store the audio data in a file, you'll need to define STORE_SBC_TO_WAV_FILE. The HAVE_PORTAUDIO directive indicates if the audio is played back via PortAudio. 217 * If HAVE_PORTAUDIO or STORE_SBC_TO_WAV_FILE directives is defined, the SBC decoder needs to get initialized when a2dp_sink_packet_handler receives event A2DP_SUBEVENT_STREAM_STARTED. 218 * The initialization of the SBC decoder requires a callback that handles PCM data: 219 * - handle_pcm_data - handles PCM audio frames. Here, they are stored a in wav file if STORE_SBC_TO_WAV_FILE is defined, and/or played using the PortAudio library if HAVE_PORTAUDIO is defined. 220 */ 221 222 /* LISTING_START(MainConfiguration): Setup Audio Sink and AVRCP Controller services */ 223 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size); 224 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 225 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 226 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 227 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size); 228 229 static int a2dp_and_avrcp_setup(void){ 230 231 l2cap_init(); 232 // Initialize AVDTP Sink 233 a2dp_sink_init(); 234 a2dp_sink_register_packet_handler(&a2dp_sink_packet_handler); 235 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 236 237 uint8_t status = a2dp_sink_create_stream_endpoint(AVDTP_AUDIO, 238 AVDTP_CODEC_SBC, media_sbc_codec_capabilities, sizeof(media_sbc_codec_capabilities), 239 media_sbc_codec_configuration, sizeof(media_sbc_codec_configuration), &a2dp_local_seid); 240 if (status != ERROR_CODE_SUCCESS){ 241 printf("A2DP Sink: not enough memory to create local stream endpoint\n"); 242 return 1; 243 } 244 // Initialize AVRCP Controller 245 avrcp_controller_init(); 246 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 247 248 // Initialize AVRCP Target 249 avrcp_target_init(); 250 avrcp_target_register_packet_handler(&avrcp_target_packet_handler); 251 252 // Initialize SDP 253 sdp_init(); 254 // setup AVDTP sink 255 memset(sdp_avdtp_sink_service_buffer, 0, sizeof(sdp_avdtp_sink_service_buffer)); 256 a2dp_sink_create_sdp_record(sdp_avdtp_sink_service_buffer, 0x10001, 1, NULL, NULL); 257 sdp_register_service(sdp_avdtp_sink_service_buffer); 258 259 // setup AVRCP Controller 260 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 261 uint16_t controller_supported_features = (1 << AVRCP_TARGET_SUPPORTED_FEATURE_CATEGORY_MONITOR_OR_AMPLIFIER); 262 #ifdef AVRCP_BROWSING_ENABLED 263 controller_supported_features |= (1 << AVRCP_CONTROLLER_SUPPORTED_FEATURE_BROWSING); 264 #endif 265 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10002, controller_supported_features, NULL, NULL); 266 sdp_register_service(sdp_avrcp_controller_service_buffer); 267 268 // setup AVRCP Target 269 memset(sdp_avrcp_target_service_buffer, 0, sizeof(sdp_avrcp_target_service_buffer)); 270 uint16_t target_supported_features = (1 << AVRCP_TARGET_SUPPORTED_FEATURE_CATEGORY_MONITOR_OR_AMPLIFIER); 271 avrcp_target_create_sdp_record(sdp_avrcp_target_service_buffer, 0x10003, target_supported_features, NULL, NULL); 272 sdp_register_service(sdp_avrcp_target_service_buffer); 273 274 gap_set_local_name("A2DP Sink Demo 00:00:00:00:00:00"); 275 gap_discoverable_control(1); 276 gap_set_class_of_device(0x200408); 277 278 /* Register for HCI events */ 279 hci_event_callback_registration.callback = &hci_packet_handler; 280 hci_add_event_handler(&hci_event_callback_registration); 281 282 return 0; 283 } 284 285 static void playback_handler(int16_t * buffer, uint16_t num_frames){ 286 287 #ifdef STORE_FROM_PLAYBACK 288 #ifdef STORE_SBC_TO_WAV_FILE 289 int wav_samples = num_frames * NUM_CHANNELS; 290 int16_t * wav_buffer = buffer; 291 #endif 292 #endif 293 294 // called from lower-layer but guaranteed to be on main thread 295 296 // first fill from resampled audio 297 uint32_t bytes_read; 298 btstack_ring_buffer_read(&decoded_audio_ring_buffer, (uint8_t *) buffer, num_frames * BYTES_PER_FRAME, &bytes_read); 299 buffer += bytes_read / NUM_CHANNELS; 300 num_frames -= bytes_read / BYTES_PER_FRAME; 301 302 // then start decoding sbc frames using request_* globals 303 request_buffer = buffer; 304 request_frames = num_frames; 305 while (request_frames){ 306 if (btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) >= sbc_frame_size){ 307 // decode frame 308 uint8_t sbc_frame[MAX_SBC_FRAME_SIZE]; 309 btstack_ring_buffer_read(&sbc_frame_ring_buffer, sbc_frame, sbc_frame_size, &bytes_read); 310 btstack_sbc_decoder_process_data(&state, 0, sbc_frame, sbc_frame_size); 311 } else { 312 printf("Error: no SBC frame ready in ring buffer\n"); 313 } 314 } 315 316 #ifdef STORE_FROM_PLAYBACK 317 #ifdef STORE_SBC_TO_WAV_FILE 318 wav_writer_write_int16(wav_samples, wav_buffer); 319 #endif 320 #endif 321 } 322 323 static void handle_pcm_data(int16_t * data, int num_frames, int num_channels, int sample_rate, void * context){ 324 UNUSED(sample_rate); 325 UNUSED(context); 326 UNUSED(num_channels); // must be stereo == 2 327 328 #ifdef STORE_DECODED 329 wav_writer_write_int16(num_frames * NUM_CHANNELS, data); 330 #endif 331 332 // resample into request buffer - add some additional space for resampling 333 int16_t output_buffer[(128+16) * NUM_CHANNELS]; // 16 * 8 * 2 334 uint32_t resampled_frames = btstack_resample_block(&resample_instance, data, num_frames, output_buffer); 335 336 #ifdef STORE_RESAMPLED 337 #ifdef STORE_SBC_TO_WAV_FILE 338 wav_writer_write_int16(resampled_frames * NUM_CHANNELS, output_buffer); 339 frame_count++; 340 #endif 341 #endif 342 343 const btstack_audio_t * audio = btstack_audio_get_instance(); 344 if (!audio) return; 345 346 // store data in btstack_audio buffer first 347 int frames_to_copy = btstack_min(resampled_frames, request_frames); 348 memcpy(request_buffer, output_buffer, frames_to_copy * BYTES_PER_FRAME); 349 request_frames -= frames_to_copy; 350 request_buffer += frames_to_copy * NUM_CHANNELS; 351 352 #ifdef STORE_BEFORE_PLAYBACK 353 #ifdef STORE_SBC_TO_WAV_FILE 354 wav_writer_write_int16(frames_to_copy * NUM_CHANNELS, output_buffer); 355 frame_count++; 356 #endif 357 #endif 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 #ifdef STORE_BEFORE_PLAYBACK 367 #ifdef STORE_SBC_TO_WAV_FILE 368 wav_writer_write_int16(frames_to_store * NUM_CHANNELS, &output_buffer[frames_to_copy * NUM_CHANNELS]); 369 frame_count++; 370 #endif 371 #endif 372 } 373 } 374 375 static int media_processing_init(avdtp_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_SBC_TO_WAV_FILE 381 wav_writer_open(wav_filename, configuration.num_channels, configuration.sampling_frequency); 382 #endif 383 384 #ifdef STORE_SBC_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_t * audio = btstack_audio_get_instance(); 394 if (audio){ 395 audio->init(NUM_CHANNELS, configuration.sampling_frequency, &playback_handler, NULL); 396 } 397 398 audio_stream_started = 0; 399 media_initialized = 1; 400 return 0; 401 } 402 403 static void media_processing_close(void){ 404 405 if (!media_initialized) return; 406 media_initialized = 0; 407 audio_stream_started = 0; 408 409 #ifdef STORE_SBC_TO_WAV_FILE 410 wav_writer_close(); 411 int total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 412 413 printf("WAV Writer: Decoding done. Processed totaly %d frames:\n - %d good\n - %d bad\n", total_frames_nr, state.good_frames_nr, total_frames_nr - state.good_frames_nr); 414 printf("WAV Writer: Written %d frames to wav file: %s\n", frame_count, wav_filename); 415 #endif 416 417 #ifdef STORE_SBC_TO_SBC_FILE 418 fclose(sbc_file); 419 #endif 420 421 // stop audio playback 422 const btstack_audio_t * audio = btstack_audio_get_instance(); 423 if (audio){ 424 audio->close(); 425 } 426 } 427 428 /* @section Handle Media Data Packet 429 * 430 * @text Media data packets, in this case the audio data, are received through the handle_l2cap_media_data_packet callback. 431 * Currently, only the SBC media codec is supported. Hence, the media data consists of the media packet header and the SBC packet. 432 * 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) 433 * If the audio stream wasn't started already and there are enough SBC frames in the ring buffer, start playback. 434 */ 435 436 static int read_media_data_header(uint8_t * packet, int size, int * offset, avdtp_media_packet_header_t * media_header); 437 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header); 438 439 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size){ 440 UNUSED(seid); 441 int pos = 0; 442 443 avdtp_media_packet_header_t media_header; 444 if (!read_media_data_header(packet, size, &pos, &media_header)) return; 445 446 avdtp_sbc_codec_header_t sbc_header; 447 if (!read_sbc_header(packet, size, &pos, &sbc_header)) return; 448 449 const btstack_audio_t * audio = btstack_audio_get_instance(); 450 451 // process data right away if there's no audio implementation active, e.g. on posix systems to store as .wav 452 if (!audio){ 453 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 454 return; 455 } 456 457 // store sbc frame size for buffer management 458 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 459 460 int status = btstack_ring_buffer_write(&sbc_frame_ring_buffer, packet+pos, size-pos); 461 if (status){ 462 printf("Error storing samples in SBC ring buffer!!!\n"); 463 } 464 465 // decide on audio sync drift based on number of sbc frames in queue 466 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) / sbc_frame_size; 467 uint32_t resampling_factor; 468 469 // nomimal factor (fixed-point 2^16) and compensation offset 470 uint32_t nomimal_factor = 0x0FF80; 471 uint32_t compensation = 0x00100; 472 473 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 474 resampling_factor = nomimal_factor - compensation; // stretch samples 475 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 476 resampling_factor = nomimal_factor; // nothing to do 477 } else { 478 resampling_factor = nomimal_factor + compensation; // compress samples 479 } 480 481 btstack_resample_set_factor(&resample_instance, resampling_factor); 482 483 // dump 484 // printf("%6u %03u %05x\n", (int) btstack_run_loop_get_time_ms(), sbc_frames_in_buffer, resampling_factor); 485 // log_info("%03u %05x", sbc_frames_in_buffer, resampling_factor); 486 487 #ifdef STORE_SBC_TO_SBC_FILE 488 fwrite(packet+pos, size-pos, 1, sbc_file); 489 #endif 490 491 // start stream if enough frames buffered 492 if (!audio_stream_started && sbc_frames_in_buffer >= OPTIMAL_FRAMES_MIN){ 493 audio_stream_started = 1; 494 // setup audio playback 495 if (audio){ 496 audio->start_stream(); 497 } 498 } 499 } 500 501 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header){ 502 int sbc_header_len = 12; // without crc 503 int pos = *offset; 504 505 if (size - pos < sbc_header_len){ 506 printf("Not enough data to read SBC header, expected %d, received %d\n", sbc_header_len, size-pos); 507 return 0; 508 } 509 510 sbc_header->fragmentation = get_bit16(packet[pos], 7); 511 sbc_header->starting_packet = get_bit16(packet[pos], 6); 512 sbc_header->last_packet = get_bit16(packet[pos], 5); 513 sbc_header->num_frames = packet[pos] & 0x0f; 514 pos++; 515 // printf("SBC HEADER: num_frames %u, fragmented %u, start %u, stop %u\n", sbc_header.num_frames, sbc_header.fragmentation, sbc_header.starting_packet, sbc_header.last_packet); 516 *offset = pos; 517 return 1; 518 } 519 520 static int read_media_data_header(uint8_t *packet, int size, int *offset, avdtp_media_packet_header_t *media_header){ 521 int media_header_len = 12; // without crc 522 int pos = *offset; 523 524 if (size - pos < media_header_len){ 525 printf("Not enough data to read media packet header, expected %d, received %d\n", media_header_len, size-pos); 526 return 0; 527 } 528 529 media_header->version = packet[pos] & 0x03; 530 media_header->padding = get_bit16(packet[pos],2); 531 media_header->extension = get_bit16(packet[pos],3); 532 media_header->csrc_count = (packet[pos] >> 4) & 0x0F; 533 pos++; 534 535 media_header->marker = get_bit16(packet[pos],0); 536 media_header->payload_type = (packet[pos] >> 1) & 0x7F; 537 pos++; 538 539 media_header->sequence_number = big_endian_read_16(packet, pos); 540 pos+=2; 541 542 media_header->timestamp = big_endian_read_32(packet, pos); 543 pos+=4; 544 545 media_header->synchronization_source = big_endian_read_32(packet, pos); 546 pos+=4; 547 *offset = pos; 548 return 1; 549 } 550 551 static void dump_sbc_configuration(avdtp_media_codec_configuration_sbc_t configuration){ 552 printf("Received SBC configuration:\n"); 553 printf(" - num_channels: %d\n", configuration.num_channels); 554 printf(" - sampling_frequency: %d\n", configuration.sampling_frequency); 555 printf(" - channel_mode: %d\n", configuration.channel_mode); 556 printf(" - block_length: %d\n", configuration.block_length); 557 printf(" - subbands: %d\n", configuration.subbands); 558 printf(" - allocation_method: %d\n", configuration.allocation_method); 559 printf(" - bitpool_value [%d, %d] \n", configuration.min_bitpool_value, configuration.max_bitpool_value); 560 printf("\n"); 561 } 562 563 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 564 UNUSED(channel); 565 UNUSED(size); 566 uint16_t local_cid; 567 uint8_t status = 0xFF; 568 bd_addr_t adress; 569 570 if (packet_type != HCI_EVENT_PACKET) return; 571 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 572 switch (packet[2]){ 573 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 574 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 575 if (avrcp_controller_cid != 0 && avrcp_controller_cid != local_cid) { 576 printf("AVRCP Controller: Connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", avrcp_controller_cid, local_cid); 577 return; 578 } 579 580 status = avrcp_subevent_connection_established_get_status(packet); 581 if (status != ERROR_CODE_SUCCESS){ 582 printf("AVRCP Controller: Connection failed: status 0x%02x\n", status); 583 avrcp_controller_cid = 0; 584 return; 585 } 586 587 avrcp_controller_cid = local_cid; 588 avrcp_connected = 1; 589 avrcp_subevent_connection_established_get_bd_addr(packet, adress); 590 printf("AVRCP Controller: Channel successfully opened: %s, avrcp_controller_cid 0x%02x\n", bd_addr_to_str(adress), avrcp_controller_cid); 591 592 // automatically enable notifications 593 avrcp_controller_enable_notification(avrcp_controller_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 594 avrcp_controller_enable_notification(avrcp_controller_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 595 avrcp_controller_enable_notification(avrcp_controller_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 596 return; 597 } 598 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 599 printf("AVRCP Controller: Channel released: avrcp_controller_cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 600 avrcp_controller_cid = 0; 601 avrcp_connected = 0; 602 return; 603 default: 604 break; 605 } 606 607 status = packet[5]; 608 if (!avrcp_controller_cid) return; 609 610 // ignore INTERIM status 611 if (status == AVRCP_CTYPE_RESPONSE_INTERIM){ 612 switch (packet[2]){ 613 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED:{ 614 uint32_t playback_position_ms = avrcp_subevent_notification_playback_pos_changed_get_playback_position_ms(packet); 615 if (playback_position_ms == AVRCP_NO_TRACK_SELECTED_PLAYBACK_POSITION_CHANGED){ 616 printf("AVRCP Controller: playback position changed, no track is selected\n"); 617 } 618 break; 619 } 620 default: 621 break; 622 } 623 return; 624 } 625 626 memset(value, 0, sizeof(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_VOLUME_CHANGED: 641 printf("AVRCP Controller: absolute volume changed %d\n", avrcp_subevent_notification_volume_changed_get_absolute_volume(packet)); 642 return; 643 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 644 printf("AVRCP Controller: changed\n"); 645 return; 646 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 647 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 648 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 649 printf("AVRCP Controller: %s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 650 break; 651 } 652 case AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO: 653 printf("AVRCP Controller: Track: %d\n", avrcp_subevent_now_playing_track_info_get_track(packet)); 654 break; 655 656 case AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO: 657 printf("AVRCP Controller: Total Tracks: %d\n", avrcp_subevent_now_playing_total_tracks_info_get_total_tracks(packet)); 658 break; 659 660 case AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO: 661 if (avrcp_subevent_now_playing_title_info_get_value_len(packet) > 0){ 662 memcpy(value, avrcp_subevent_now_playing_title_info_get_value(packet), avrcp_subevent_now_playing_title_info_get_value_len(packet)); 663 printf("AVRCP Controller: Title: %s\n", value); 664 } 665 break; 666 667 case AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO: 668 if (avrcp_subevent_now_playing_artist_info_get_value_len(packet) > 0){ 669 memcpy(value, avrcp_subevent_now_playing_artist_info_get_value(packet), avrcp_subevent_now_playing_artist_info_get_value_len(packet)); 670 printf("AVRCP Controller: Artist: %s\n", value); 671 } 672 break; 673 674 case AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO: 675 if (avrcp_subevent_now_playing_album_info_get_value_len(packet) > 0){ 676 memcpy(value, avrcp_subevent_now_playing_album_info_get_value(packet), avrcp_subevent_now_playing_album_info_get_value_len(packet)); 677 printf("AVRCP Controller: Album: %s\n", value); 678 } 679 break; 680 681 case AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO: 682 if (avrcp_subevent_now_playing_genre_info_get_value_len(packet) > 0){ 683 memcpy(value, avrcp_subevent_now_playing_genre_info_get_value(packet), avrcp_subevent_now_playing_genre_info_get_value_len(packet)); 684 printf("AVRCP Controller: Genre: %s\n", value); 685 } 686 break; 687 688 case AVRCP_SUBEVENT_PLAY_STATUS: 689 printf("AVRCP Controller: song length: %"PRIu32" ms, song position: %"PRIu32" ms, play status: %s\n", 690 avrcp_subevent_play_status_get_song_length(packet), 691 avrcp_subevent_play_status_get_song_position(packet), 692 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 693 break; 694 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 695 printf("AVRCP Controller: operation done %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 696 break; 697 case AVRCP_SUBEVENT_OPERATION_START: 698 printf("AVRCP Controller: operation start %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 699 break; 700 case AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE: 701 // response to set shuffle and repeat mode 702 printf("\n"); 703 break; 704 default: 705 printf("AVRCP Controller: event 0x%02x is not parsed\n", packet[2]); 706 break; 707 } 708 } 709 710 711 static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 712 UNUSED(channel); 713 UNUSED(size); 714 bd_addr_t event_addr; 715 uint16_t local_cid; 716 uint8_t status = ERROR_CODE_SUCCESS; 717 718 if (packet_type != HCI_EVENT_PACKET) return; 719 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 720 721 int volume; 722 723 switch (packet[2]){ 724 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 725 volume = avrcp_subevent_notification_volume_changed_get_absolute_volume(packet); 726 volume_percentage = volume * 100 / 127; 727 printf("AVRCP Target: new volume %d%% (%d)\n", volume_percentage, volume); 728 break; 729 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: 730 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 731 if (avrcp_target_cid != 0 && avrcp_target_cid != local_cid) { 732 printf("AVRCP Target: Connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", avrcp_target_cid, local_cid); 733 return; 734 } 735 736 status = avrcp_subevent_connection_established_get_status(packet); 737 if (status != ERROR_CODE_SUCCESS){ 738 printf("AVRCP Target: Connection failed: status 0x%02x\n", status); 739 avrcp_target_cid = 0; 740 return; 741 } 742 avrcp_target_cid = local_cid; 743 printf("AVRCP Target: Connected to %s, avrcp_cid 0x%02x\n", bd_addr_to_str(event_addr), local_cid); 744 break; 745 case AVRCP_SUBEVENT_EVENT_IDS_QUERY: 746 printf("AVRCP Target: get supported events\n"); 747 status = avrcp_target_supported_events(avrcp_target_cid, events_num, events, sizeof(events)); 748 break; 749 case AVRCP_SUBEVENT_COMPANY_IDS_QUERY: 750 status = avrcp_target_supported_companies(avrcp_target_cid, companies_num, companies, sizeof(companies)); 751 break; 752 case AVRCP_SUBEVENT_OPERATION:{ 753 avrcp_operation_id_t operation_id = avrcp_subevent_operation_get_operation_id(packet); 754 // if (!media_tracker.connected) break; 755 switch (operation_id){ 756 case AVRCP_OPERATION_ID_PLAY: 757 printf("AVRCP Target: PLAY\n"); 758 break; 759 case AVRCP_OPERATION_ID_PAUSE: 760 printf("AVRCP Target: PAUSE\n"); 761 break; 762 case AVRCP_OPERATION_ID_STOP: 763 printf("AVRCP Target: STOP\n"); 764 break; 765 case AVRCP_OPERATION_ID_REWIND: 766 printf("AVRCP Target: received operation REWIND\n"); 767 break; 768 case AVRCP_OPERATION_ID_FAST_FORWARD: 769 printf("AVRCP Target: received operation FAST_FORWARD\n"); 770 break; 771 case AVRCP_OPERATION_ID_FORWARD: 772 printf("AVRCP Target: received operation FORWARD\n"); 773 break; 774 case AVRCP_OPERATION_ID_BACKWARD: 775 printf("AVRCP Target: received operation BACKWARD\n"); 776 break; 777 case AVRCP_OPERATION_ID_SKIP: 778 printf("AVRCP Target: received operation SKIP\n"); 779 break; 780 case AVRCP_OPERATION_ID_MUTE: 781 printf("AVRCP Target: received operation MUTE\n"); 782 break; 783 case AVRCP_OPERATION_ID_CHANNEL_UP: 784 printf("AVRCP Target: received operation CHANNEL_UP\n"); 785 break; 786 case AVRCP_OPERATION_ID_CHANNEL_DOWN: 787 printf("AVRCP Target: received operation CHANNEL_DOWN\n"); 788 break; 789 case AVRCP_OPERATION_ID_SELECT: 790 printf("AVRCP Target: received operation SELECT\n"); 791 break; 792 case AVRCP_OPERATION_ID_UP: 793 printf("AVRCP Target: received operation UP\n"); 794 break; 795 case AVRCP_OPERATION_ID_DOWN: 796 printf("AVRCP Target: received operation DOWN\n"); 797 break; 798 case AVRCP_OPERATION_ID_LEFT: 799 printf("AVRCP Target: received operation LEFT\n"); 800 break; 801 case AVRCP_OPERATION_ID_RIGHT: 802 printf("AVRCP Target: received operation RIGTH\n"); 803 break; 804 case AVRCP_OPERATION_ID_ROOT_MENU: 805 printf("AVRCP Target: received operation ROOT_MENU\n"); 806 break; 807 default: 808 return; 809 } 810 break; 811 } 812 813 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 814 printf("AVRCP Target: Disconnected, avrcp_cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 815 return; 816 default: 817 printf("AVRCP Target: event 0x%02x is not parsed\n", packet[2]); 818 break; 819 } 820 } 821 822 823 static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 824 UNUSED(channel); 825 UNUSED(size); 826 if (packet_type != HCI_EVENT_PACKET) return; 827 if (hci_event_packet_get_type(packet) == HCI_EVENT_PIN_CODE_REQUEST) { 828 bd_addr_t address; 829 printf("Pin code request - using '0000'\n"); 830 hci_event_pin_code_request_get_bd_addr(packet, address); 831 gap_pin_code_response(address, "0000"); 832 } 833 } 834 835 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 836 UNUSED(channel); 837 UNUSED(size); 838 uint16_t cid; 839 bd_addr_t address; 840 uint8_t status; 841 842 if (packet_type != HCI_EVENT_PACKET) return; 843 if (hci_event_packet_get_type(packet) != HCI_EVENT_A2DP_META) return; 844 845 switch (packet[2]){ 846 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 847 printf("A2DP Sink Demo: received non SBC codec. not implemented.\n"); 848 break; 849 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 850 printf("A2DP Sink Demo: received SBC codec configuration.\n"); 851 sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 852 sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 853 sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 854 sbc_configuration.channel_mode = a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet); 855 sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 856 sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 857 sbc_configuration.allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 858 sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 859 sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 860 sbc_configuration.frames_per_buffer = sbc_configuration.subbands * sbc_configuration.block_length; 861 dump_sbc_configuration(sbc_configuration); 862 863 if (sbc_configuration.reconfigure){ 864 media_processing_close(); 865 } 866 // prepare media processing 867 media_processing_init(sbc_configuration); 868 break; 869 } 870 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 871 a2dp_subevent_stream_established_get_bd_addr(packet, address); 872 status = a2dp_subevent_stream_established_get_status(packet); 873 cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 874 if (!a2dp_cid){ 875 // incoming connection 876 a2dp_cid = cid; 877 } else if (cid != a2dp_cid) { 878 break; 879 } 880 if (status){ 881 printf("A2DP Sink: streaming connection failed, status 0x%02x\n", status); 882 break; 883 } 884 885 memcpy(device_addr, address, 6); 886 a2dp_local_seid = a2dp_subevent_stream_established_get_local_seid(packet); 887 printf("A2DP Sink: streaming connection is established, address %s, a2dp cid 0x%02X, a2dp local seid %d\n", bd_addr_to_str(address), a2dp_cid, a2dp_local_seid); 888 break; 889 890 case A2DP_SUBEVENT_STREAM_STARTED: 891 cid = a2dp_subevent_stream_started_get_a2dp_cid(packet); 892 if (cid != a2dp_cid) break; 893 a2dp_local_seid = a2dp_subevent_stream_started_get_local_seid(packet); 894 printf("A2DP Sink: stream started\n"); 895 media_processing_init(sbc_configuration); 896 break; 897 898 case A2DP_SUBEVENT_STREAM_SUSPENDED: 899 cid = a2dp_subevent_stream_suspended_get_a2dp_cid(packet); 900 if (cid != a2dp_cid) break; 901 a2dp_local_seid = a2dp_subevent_stream_suspended_get_local_seid(packet); 902 printf("A2DP Sink: stream paused\n"); 903 // media_processing_close(); 904 break; 905 906 case A2DP_SUBEVENT_STREAM_RELEASED: 907 a2dp_local_seid = a2dp_subevent_stream_released_get_local_seid(packet); 908 printf("A2DP Sink: stream released\n"); 909 media_processing_close(); 910 break; 911 case A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 912 cid = a2dp_subevent_signaling_connection_released_get_a2dp_cid(packet); 913 printf("A2DP Sink: signaling connection released\n"); 914 media_processing_close(); 915 break; 916 default: 917 printf("A2DP Sink: not parsed 0x%02x\n", packet[2]); 918 break; 919 } 920 } 921 922 #ifdef HAVE_BTSTACK_STDIN 923 static void show_usage(void){ 924 bd_addr_t iut_address; 925 gap_local_bd_addr(iut_address); 926 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 927 printf("b - AVDTP Sink create connection to addr %s\n", bd_addr_to_str(device_addr)); 928 printf("B - AVDTP Sink disconnect\n"); 929 printf("c - AVRCP Controller create connection to addr %s\n", bd_addr_to_str(device_addr)); 930 printf("C - AVRCP Controller disconnect\n"); 931 printf("d - AVRCP Target create connection to addr %s\n", bd_addr_to_str(device_addr)); 932 printf("D - AVRCP Target disconnect\n"); 933 934 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 935 printf("O - get play status\n"); 936 printf("j - get now playing info\n"); 937 printf("k - play\n"); 938 printf("K - stop\n"); 939 printf("L - pause\n"); 940 printf("u - start fast forward\n"); 941 printf("U - stop fast forward\n"); 942 printf("n - start rewind\n"); 943 printf("N - stop rewind\n"); 944 printf("i - forward\n"); 945 printf("I - backward\n"); 946 printf("M - mute\n"); 947 printf("r - skip\n"); 948 printf("q - query repeat and shuffle mode\n"); 949 printf("v - repeat single track\n"); 950 printf("x - repeat all tracks\n"); 951 printf("X - disable repeat mode\n"); 952 printf("z - shuffle all tracks\n"); 953 printf("Z - disable shuffle mode\n"); 954 955 printf("a/A - register/deregister TRACK_CHANGED\n"); 956 printf("R/P - register/deregister PLAYBACK_POS_CHANGED\n"); 957 958 printf("\n--- Volume Control ---\n"); 959 printf("t - volume up for 10 percent\n"); 960 printf("T - volume down for 10 percent\n"); 961 962 printf("---\n"); 963 } 964 #endif 965 966 #ifdef HAVE_BTSTACK_STDIN 967 static void stdin_process(char cmd){ 968 uint8_t status = ERROR_CODE_SUCCESS; 969 970 switch (cmd){ 971 case 'b': 972 status = a2dp_sink_establish_stream(device_addr, a2dp_local_seid, &a2dp_cid); 973 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); 974 break; 975 case 'B': 976 printf(" - AVDTP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 977 status = avdtp_sink_disconnect(a2dp_cid); 978 break; 979 case 'c': 980 printf(" - Create AVRCP Controller connection to addr %s.\n", bd_addr_to_str(device_addr)); 981 status = avrcp_controller_connect(device_addr, &avrcp_controller_cid); 982 break; 983 case 'C': 984 printf(" - AVRCP Controller disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 985 status = avrcp_controller_disconnect(avrcp_controller_cid); 986 break; 987 case 'd': 988 printf(" - Create AVRCP Target connection to addr %s.\n", bd_addr_to_str(device_addr)); 989 status = avrcp_target_connect(device_addr, &avrcp_target_cid); 990 break; 991 case 'D': 992 printf(" - AVRCP Target disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 993 status = avrcp_target_disconnect(avrcp_target_cid); 994 break; 995 996 case '\n': 997 case '\r': 998 break; 999 // Volume Control 1000 case 't': 1001 volume_percentage = volume_percentage <= 90 ? volume_percentage + 10 : volume_percentage; 1002 printf(" - volume up for 10 percent, %d%% (%d) \n", volume_percentage, volume_percentage * 127 / 100); 1003 status = avrcp_target_volume_changed(avrcp_target_cid, volume_percentage * 127 / 100); 1004 break; 1005 case 'T': 1006 volume_percentage = volume_percentage >= 10 ? volume_percentage - 10 : volume_percentage; 1007 printf(" - volume down for 10 percent, %d%% (%d) \n", volume_percentage, volume_percentage * 127 / 100); 1008 status = avrcp_target_volume_changed(avrcp_target_cid, volume_percentage * 127 / 100); 1009 break; 1010 1011 case 'O': 1012 printf(" - get play status\n"); 1013 status = avrcp_controller_get_play_status(avrcp_controller_cid); 1014 break; 1015 case 'j': 1016 printf(" - get now playing info\n"); 1017 status = avrcp_controller_get_now_playing_info(avrcp_controller_cid); 1018 break; 1019 case 'k': 1020 printf(" - play\n"); 1021 status = avrcp_controller_play(avrcp_controller_cid); 1022 break; 1023 case 'K': 1024 printf(" - stop\n"); 1025 status = avrcp_controller_stop(avrcp_controller_cid); 1026 break; 1027 case 'L': 1028 printf(" - pause\n"); 1029 status = avrcp_controller_pause(avrcp_controller_cid); 1030 break; 1031 case 'u': 1032 printf(" - start fast forward\n"); 1033 status = avrcp_controller_press_and_hold_fast_forward(avrcp_controller_cid); 1034 break; 1035 case 'U': 1036 printf(" - stop fast forward\n"); 1037 status = avrcp_controller_release_press_and_hold_cmd(avrcp_controller_cid); 1038 break; 1039 case 'n': 1040 printf(" - start rewind\n"); 1041 status = avrcp_controller_press_and_hold_rewind(avrcp_controller_cid); 1042 break; 1043 case 'N': 1044 printf(" - stop rewind\n"); 1045 status = avrcp_controller_release_press_and_hold_cmd(avrcp_controller_cid); 1046 break; 1047 case 'i': 1048 printf(" - forward\n"); 1049 status = avrcp_controller_forward(avrcp_controller_cid); 1050 break; 1051 case 'I': 1052 printf(" - backward\n"); 1053 status = avrcp_controller_backward(avrcp_controller_cid); 1054 break; 1055 case 'M': 1056 printf(" - mute\n"); 1057 status = avrcp_controller_mute(avrcp_controller_cid); 1058 break; 1059 case 'r': 1060 printf(" - skip\n"); 1061 status = avrcp_controller_skip(avrcp_controller_cid); 1062 break; 1063 case 'q': 1064 printf(" - query repeat and shuffle mode\n"); 1065 status = avrcp_controller_query_shuffle_and_repeat_modes(avrcp_controller_cid); 1066 break; 1067 case 'v': 1068 printf(" - repeat single track\n"); 1069 status = avrcp_controller_set_repeat_mode(avrcp_controller_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 1070 break; 1071 case 'x': 1072 printf(" - repeat all tracks\n"); 1073 status = avrcp_controller_set_repeat_mode(avrcp_controller_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 1074 break; 1075 case 'X': 1076 printf(" - disable repeat mode\n"); 1077 status = avrcp_controller_set_repeat_mode(avrcp_controller_cid, AVRCP_REPEAT_MODE_OFF); 1078 break; 1079 case 'z': 1080 printf(" - shuffle all tracks\n"); 1081 status = avrcp_controller_set_shuffle_mode(avrcp_controller_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 1082 break; 1083 case 'Z': 1084 printf(" - disable shuffle mode\n"); 1085 status = avrcp_controller_set_shuffle_mode(avrcp_controller_cid, AVRCP_SHUFFLE_MODE_OFF); 1086 break; 1087 case 'a': 1088 printf("AVRCP: enable notification TRACK_CHANGED\n"); 1089 avrcp_controller_enable_notification(avrcp_controller_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 1090 break; 1091 case 'A': 1092 printf("AVRCP: disable notification TRACK_CHANGED\n"); 1093 avrcp_controller_disable_notification(avrcp_controller_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 1094 break; 1095 case 'R': 1096 printf("AVRCP: enable notification PLAYBACK_POS_CHANGED\n"); 1097 avrcp_controller_enable_notification(avrcp_controller_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED); 1098 break; 1099 case 'P': 1100 printf("AVRCP: disable notification PLAYBACK_POS_CHANGED\n"); 1101 avrcp_controller_disable_notification(avrcp_controller_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED); 1102 break; 1103 1104 default: 1105 show_usage(); 1106 return; 1107 } 1108 if (status != ERROR_CODE_SUCCESS){ 1109 printf("Could not perform command, status 0x%2x\n", status); 1110 } 1111 } 1112 #endif 1113 1114 int btstack_main(int argc, const char * argv[]); 1115 int btstack_main(int argc, const char * argv[]){ 1116 UNUSED(argc); 1117 (void)argv; 1118 1119 a2dp_and_avrcp_setup(); 1120 1121 #ifdef HAVE_BTSTACK_STDIN 1122 // parse human readable Bluetooth address 1123 sscanf_bd_addr(device_addr_string, device_addr); 1124 btstack_stdin_setup(stdin_process); 1125 #endif 1126 1127 // turn on! 1128 printf("Starting BTstack ...\n"); 1129 hci_power_control(HCI_POWER_ON); 1130 return 0; 1131 } 1132