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 39 #include <stdint.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 44 #include "btstack.h" 45 46 #define AVRCP_BROWSING_ENABLED 0 47 48 #ifdef HAVE_BTSTACK_STDIN 49 #include "btstack_stdin.h" 50 #endif 51 52 #ifdef HAVE_AUDIO_DMA 53 #include "btstack_ring_buffer.h" 54 #include "hal_audio_dma.h" 55 #endif 56 57 #ifdef HAVE_PORTAUDIO 58 #include "btstack_ring_buffer.h" 59 #include <portaudio.h> 60 #endif 61 62 #ifdef HAVE_POSIX_FILE_IO 63 #include "wav_util.h" 64 #define STORE_SBC_TO_SBC_FILE 65 #define STORE_SBC_TO_WAV_FILE 66 #endif 67 68 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) || defined(HAVE_AUDIO_DMA) 69 #define DECODE_SBC 70 #endif 71 72 #define NUM_CHANNELS 2 73 #define BYTES_PER_FRAME (2*NUM_CHANNELS) 74 #define MAX_SBC_FRAME_SIZE 120 75 76 // SBC Decoder for WAV file or PortAudio 77 #ifdef DECODE_SBC 78 static btstack_sbc_decoder_state_t state; 79 static btstack_sbc_mode_t mode = SBC_MODE_STANDARD; 80 #endif 81 82 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 83 #define PREBUFFER_MS 200 84 static int audio_stream_started = 0; 85 static int audio_stream_paused = 0; 86 static btstack_ring_buffer_t ring_buffer; 87 #endif 88 89 #ifdef HAVE_AUDIO_DMA 90 // below 30: add samples, 30-40: fine, above 40: drop samples 91 #define OPTIMAL_FRAMES_MIN 30 92 #define OPTIMAL_FRAMES_MAX 40 93 #define ADDITIONAL_FRAMES 10 94 #define DMA_AUDIO_FRAMES 128 95 #define DMA_MAX_FILL_FRAMES 1 96 #define NUM_AUDIO_BUFFERS 2 97 98 static uint16_t audio_samples[(DMA_AUDIO_FRAMES + DMA_MAX_FILL_FRAMES)*2*NUM_AUDIO_BUFFERS]; 99 static uint16_t audio_samples_len[NUM_AUDIO_BUFFERS]; 100 static uint8_t ring_buffer_storage[(OPTIMAL_FRAMES_MAX + ADDITIONAL_FRAMES) * MAX_SBC_FRAME_SIZE]; 101 static const uint16_t silent_buffer[DMA_AUDIO_FRAMES*2]; 102 static volatile int playback_buffer; 103 static int write_buffer; 104 static uint8_t sbc_frame_size; 105 static int sbc_samples_fix; 106 #endif 107 108 // PortAdudio - live playback 109 #ifdef HAVE_PORTAUDIO 110 #define PA_SAMPLE_TYPE paInt16 111 #define SAMPLE_RATE 48000 112 #define FRAMES_PER_BUFFER 128 113 #define PREBUFFER_BYTES (PREBUFFER_MS*SAMPLE_RATE/1000*BYTES_PER_FRAME) 114 static PaStream * stream; 115 static uint8_t ring_buffer_storage[2*PREBUFFER_BYTES]; 116 #endif 117 118 // WAV File 119 #ifdef STORE_SBC_TO_WAV_FILE 120 static int frame_count = 0; 121 static char * wav_filename = "avdtp_sink.wav"; 122 #endif 123 124 #ifdef STORE_SBC_TO_SBC_FILE 125 static FILE * sbc_file; 126 static char * sbc_filename = "avdtp_sink.sbc"; 127 #endif 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 #ifdef HAVE_BTSTACK_STDIN 154 // mac 2011: static bd_addr_t remote = {0x04, 0x0C, 0xCE, 0xE4, 0x85, 0xD3}; 155 // pts: static bd_addr_t remote = {0x00, 0x1B, 0xDC, 0x08, 0x0A, 0xA5}; 156 // mac 2013: 157 // mac 2013: static const char * device_addr_string = "84:38:35:65:d1:15"; 158 // iPhone 5S: 159 static const char * device_addr_string = "54:E4:3A:26:A2:39"; 160 #endif 161 162 // bt dongle: -u 02-02 static bd_addr_t remote = {0x00, 0x02, 0x72, 0xDC, 0x31, 0xC1}; 163 164 static uint8_t sdp_avdtp_sink_service_buffer[150]; 165 static avdtp_media_codec_configuration_sbc_t sbc_configuration; 166 static uint16_t a2dp_cid = 0; 167 static uint8_t local_seid = 0; 168 static uint8_t value[100]; 169 170 typedef enum { 171 AVDTP_APPLICATION_IDLE, 172 AVDTP_APPLICATION_CONNECTED, 173 AVDTP_APPLICATION_STREAMING 174 } avdtp_application_state_t; 175 176 avdtp_application_state_t app_state = AVDTP_APPLICATION_IDLE; 177 178 static btstack_packet_callback_registration_t hci_event_callback_registration; 179 180 static int media_initialized = 0; 181 182 #ifdef HAVE_BTSTACK_STDIN 183 static bd_addr_t device_addr; 184 #endif 185 186 static uint16_t avrcp_cid = 0; 187 static uint8_t avrcp_connected = 0; 188 static uint8_t sdp_avrcp_controller_service_buffer[200]; 189 190 #ifdef HAVE_PORTAUDIO 191 static int patestCallback( const void *inputBuffer, void *outputBuffer, 192 unsigned long framesPerBuffer, 193 const PaStreamCallbackTimeInfo* timeInfo, 194 PaStreamCallbackFlags statusFlags, 195 void *userData ) { 196 197 /** patestCallback is called from different thread, don't use hci_dump / log_info here without additional checks */ 198 199 (void) timeInfo; /* Prevent unused variable warnings. */ 200 (void) statusFlags; 201 (void) inputBuffer; 202 (void) userData; 203 204 int bytes_to_copy = framesPerBuffer * BYTES_PER_FRAME; 205 206 // fill with silence while paused 207 if (audio_stream_paused){ 208 209 if (btstack_ring_buffer_bytes_available(&ring_buffer) < PREBUFFER_BYTES){ 210 // printf("PA: silence\n"); 211 memset(outputBuffer, 0, bytes_to_copy); 212 return 0; 213 } else { 214 // resume playback 215 audio_stream_paused = 0; 216 } 217 } 218 219 // get data from ringbuffer 220 uint32_t bytes_read = 0; 221 btstack_ring_buffer_read(&ring_buffer, outputBuffer, bytes_to_copy, &bytes_read); 222 bytes_to_copy -= bytes_read; 223 224 // fill with 0 if not enough 225 if (bytes_to_copy){ 226 memset(outputBuffer + bytes_read, 0, bytes_to_copy); 227 audio_stream_paused = 1; 228 } 229 return 0; 230 } 231 #endif 232 233 #ifdef HAVE_AUDIO_DMA 234 static int next_buffer(int current){ 235 if (current == NUM_AUDIO_BUFFERS-1) return 0; 236 return current + 1; 237 } 238 static uint8_t * start_of_buffer(int num){ 239 return (uint8_t *) &audio_samples[num * DMA_AUDIO_FRAMES * 2]; 240 } 241 void hal_audio_dma_done(void){ 242 if (audio_stream_paused){ 243 hal_audio_dma_play((const uint8_t *) silent_buffer, DMA_AUDIO_FRAMES*4); 244 return; 245 } 246 // next buffer 247 int next_playback_buffer = next_buffer(playback_buffer); 248 uint8_t * playback_data; 249 if (next_playback_buffer == write_buffer){ 250 251 // TODO: stop codec while playing silence when getting 'stream paused' 252 253 // start playing silence 254 audio_stream_paused = 1; 255 hal_audio_dma_play((const uint8_t *) silent_buffer, DMA_AUDIO_FRAMES*4); 256 printf("%6u - paused - bytes in buffer %u\n", (int) btstack_run_loop_get_time_ms(), btstack_ring_buffer_bytes_available(&ring_buffer)); 257 return; 258 } 259 playback_buffer = next_playback_buffer; 260 playback_data = start_of_buffer(playback_buffer); 261 hal_audio_dma_play(playback_data, audio_samples_len[playback_buffer]); 262 // btstack_run_loop_embedded_trigger(); 263 } 264 #endif 265 266 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 267 268 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context){ 269 UNUSED(sample_rate); 270 UNUSED(context); 271 272 #ifdef STORE_SBC_TO_WAV_FILE 273 wav_writer_write_int16(num_samples*num_channels, data); 274 frame_count++; 275 #endif 276 277 #ifdef HAVE_PORTAUDIO 278 // store pcm samples in ringbuffer 279 btstack_ring_buffer_write(&ring_buffer, (uint8_t *)data, num_samples*num_channels*2); 280 281 if (!audio_stream_started){ 282 audio_stream_paused = 1; 283 /* -- start stream -- */ 284 PaError err = Pa_StartStream(stream); 285 if (err != paNoError){ 286 printf("Error starting the stream: \"%s\"\n", Pa_GetErrorText(err)); 287 return; 288 } 289 audio_stream_started = 1; 290 } 291 #endif 292 293 } 294 #endif 295 296 297 #ifdef HAVE_AUDIO_DMA 298 299 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context){ 300 UNUSED(sample_rate); 301 UNUSED(context); 302 303 // store in ring buffer 304 uint8_t * write_data = start_of_buffer(write_buffer); 305 uint16_t len = num_samples*num_channels*2; 306 memcpy(write_data, data, len); 307 audio_samples_len[write_buffer] = len; 308 309 // add/drop audio frame to fix drift 310 if (sbc_samples_fix > 0){ 311 memcpy(write_data + len, write_data + len - 4, 4); 312 audio_samples_len[write_buffer] += 4; 313 } 314 if (sbc_samples_fix < 0){ 315 audio_samples_len[write_buffer] -= 4; 316 } 317 318 write_buffer = next_buffer(write_buffer); 319 } 320 321 static void hal_audio_dma_process(btstack_data_source_t * ds, btstack_data_source_callback_type_t callback_type){ 322 UNUSED(ds); 323 UNUSED(callback_type); 324 325 if (!media_initialized) return; 326 327 int trigger_resume = 0; 328 if (audio_stream_paused) { 329 if (sbc_frame_size && btstack_ring_buffer_bytes_available(&ring_buffer) >= OPTIMAL_FRAMES_MIN * sbc_frame_size){ 330 trigger_resume = 1; 331 // reset buffers 332 playback_buffer = NUM_AUDIO_BUFFERS - 1; 333 write_buffer = 0; 334 } else { 335 return; 336 } 337 } 338 339 while (playback_buffer != write_buffer && btstack_ring_buffer_bytes_available(&ring_buffer) >= sbc_frame_size ){ 340 uint8_t frame[MAX_SBC_FRAME_SIZE]; 341 uint32_t bytes_read = 0; 342 btstack_ring_buffer_read(&ring_buffer, frame, sbc_frame_size, &bytes_read); 343 btstack_sbc_decoder_process_data(&state, 0, frame, sbc_frame_size); 344 } 345 346 if (trigger_resume){ 347 printf("%6u - resume\n", (int) btstack_run_loop_get_time_ms()); 348 audio_stream_paused = 0; 349 } 350 } 351 352 #endif 353 354 static int media_processing_init(avdtp_media_codec_configuration_sbc_t configuration){ 355 if (media_initialized) return 0; 356 #ifdef DECODE_SBC 357 btstack_sbc_decoder_init(&state, mode, handle_pcm_data, NULL); 358 #endif 359 360 #ifdef STORE_SBC_TO_WAV_FILE 361 wav_writer_open(wav_filename, configuration.num_channels, configuration.sampling_frequency); 362 #endif 363 364 #ifdef STORE_SBC_TO_SBC_FILE 365 sbc_file = fopen(sbc_filename, "wb"); 366 #endif 367 368 #ifdef HAVE_PORTAUDIO 369 // int frames_per_buffer = configuration.frames_per_buffer; 370 PaError err; 371 PaStreamParameters outputParameters; 372 const PaDeviceInfo *deviceInfo; 373 374 /* -- initialize PortAudio -- */ 375 err = Pa_Initialize(); 376 if (err != paNoError){ 377 printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err)); 378 return err; 379 } 380 /* -- setup input and output -- */ 381 outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */ 382 outputParameters.channelCount = configuration.num_channels; 383 outputParameters.sampleFormat = PA_SAMPLE_TYPE; 384 outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency; 385 outputParameters.hostApiSpecificStreamInfo = NULL; 386 deviceInfo = Pa_GetDeviceInfo( outputParameters.device ); 387 printf("PortAudio: Output device: %s\n", deviceInfo->name); 388 log_info("PortAudio: Output device: %s", deviceInfo->name); 389 /* -- setup stream -- */ 390 err = Pa_OpenStream( 391 &stream, 392 NULL, /* &inputParameters */ 393 &outputParameters, 394 configuration.sampling_frequency, 395 0, 396 paClipOff, /* we won't output out of range samples so don't bother clipping them */ 397 patestCallback, /* use callback */ 398 NULL ); 399 400 if (err != paNoError){ 401 printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err)); 402 return err; 403 } 404 log_info("PortAudio: stream opened"); 405 printf("PortAudio: stream opened\n"); 406 #endif 407 #ifdef HAVE_AUDIO_DMA 408 audio_stream_paused = 1; 409 hal_audio_dma_init(configuration.sampling_frequency); 410 hal_audio_dma_set_audio_played(&hal_audio_dma_done); 411 // start playing silence 412 hal_audio_dma_done(); 413 #endif 414 415 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 416 memset(ring_buffer_storage, 0, sizeof(ring_buffer_storage)); 417 btstack_ring_buffer_init(&ring_buffer, ring_buffer_storage, sizeof(ring_buffer_storage)); 418 audio_stream_started = 0; 419 audio_stream_paused = 0; 420 #endif 421 media_initialized = 1; 422 return 0; 423 } 424 425 static void media_processing_close(void){ 426 if (!media_initialized) return; 427 media_initialized = 0; 428 429 #ifdef STORE_SBC_TO_WAV_FILE 430 wav_writer_close(); 431 int total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 432 433 printf("WAV Writer: Decoding done. Processed totaly %d frames:\n - %d good\n - %d bad\n - %d zero frames\n", total_frames_nr, state.good_frames_nr, state.bad_frames_nr, state.zero_frames_nr); 434 printf("WAV Writer: Written %d frames to wav file: %s\n", frame_count, wav_filename); 435 #endif 436 437 #ifdef STORE_SBC_TO_SBC_FILE 438 fclose(sbc_file); 439 #endif 440 441 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 442 audio_stream_started = 0; 443 #endif 444 445 #ifdef HAVE_PORTAUDIO 446 printf("PortAudio: Steram closed\n"); 447 log_info("PortAudio: Stream closed"); 448 449 PaError err = Pa_StopStream(stream); 450 if (err != paNoError){ 451 printf("Error stopping the stream: \"%s\"\n", Pa_GetErrorText(err)); 452 log_error("Error stopping the stream: \"%s\"", Pa_GetErrorText(err)); 453 return; 454 } 455 err = Pa_CloseStream(stream); 456 if (err != paNoError){ 457 printf("Error closing the stream: \"%s\"\n", Pa_GetErrorText(err)); 458 log_error("Error closing the stream: \"%s\"", Pa_GetErrorText(err)); 459 return; 460 } 461 err = Pa_Terminate(); 462 if (err != paNoError){ 463 printf("Error terminating portaudio: \"%s\"\n", Pa_GetErrorText(err)); 464 log_error("Error terminating portaudio: \"%s\"", Pa_GetErrorText(err)); 465 return; 466 } 467 #endif 468 469 #ifdef HAVE_AUDIO_DMA 470 hal_audio_dma_close(); 471 #endif 472 } 473 474 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size){ 475 UNUSED(seid); 476 int pos = 0; 477 478 avdtp_media_packet_header_t media_header; 479 media_header.version = packet[pos] & 0x03; 480 media_header.padding = get_bit16(packet[pos],2); 481 media_header.extension = get_bit16(packet[pos],3); 482 media_header.csrc_count = (packet[pos] >> 4) & 0x0F; 483 484 pos++; 485 486 media_header.marker = get_bit16(packet[pos],0); 487 media_header.payload_type = (packet[pos] >> 1) & 0x7F; 488 pos++; 489 490 media_header.sequence_number = big_endian_read_16(packet, pos); 491 pos+=2; 492 493 media_header.timestamp = big_endian_read_32(packet, pos); 494 pos+=4; 495 496 media_header.synchronization_source = big_endian_read_32(packet, pos); 497 pos+=4; 498 499 UNUSED(media_header); 500 501 // TODO: read csrc list 502 503 // printf_hexdump( packet, pos ); 504 // printf("MEDIA HEADER: %u timestamp, version %u, padding %u, extension %u, csrc_count %u\n", 505 // media_header.timestamp, media_header.version, media_header.padding, media_header.extension, media_header.csrc_count); 506 // printf("MEDIA HEADER: marker %02x, payload_type %02x, sequence_number %u, synchronization_source %u\n", 507 // media_header.marker, media_header.payload_type, media_header.sequence_number, media_header.synchronization_source); 508 509 avdtp_sbc_codec_header_t sbc_header; 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++; 515 516 #ifdef HAVE_AUDIO_DMA 517 // store sbc frame size for buffer management 518 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 519 #endif 520 521 UNUSED(sbc_header); 522 // 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); 523 // printf_hexdump( packet+pos, size-pos ); 524 525 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 526 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 527 #endif 528 529 #ifdef HAVE_AUDIO_DMA 530 btstack_ring_buffer_write(&ring_buffer, packet+pos, size-pos); 531 532 // decide on audio sync drift based on number of sbc frames in queue 533 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&ring_buffer) / sbc_frame_size; 534 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 535 sbc_samples_fix = 1; // duplicate last sample 536 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 537 sbc_samples_fix = 0; // nothing to do 538 } else { 539 sbc_samples_fix = -1; // drop last sample 540 } 541 542 // dump 543 printf("%6u %03u %d\n", (int) btstack_run_loop_get_time_ms(), sbc_frames_in_buffer, sbc_samples_fix); 544 545 #endif 546 547 #ifdef STORE_SBC_TO_SBC_FILE 548 fwrite(packet+pos, size-pos, 1, sbc_file); 549 #endif 550 } 551 552 static void dump_sbc_configuration(avdtp_media_codec_configuration_sbc_t configuration){ 553 printf(" -- a2dp sink demo: Received media codec configuration:\n"); 554 printf(" - num_channels: %d\n", configuration.num_channels); 555 printf(" - sampling_frequency: %d\n", configuration.sampling_frequency); 556 printf(" - channel_mode: %d\n", configuration.channel_mode); 557 printf(" - block_length: %d\n", configuration.block_length); 558 printf(" - subbands: %d\n", configuration.subbands); 559 printf(" - allocation_method: %d\n", configuration.allocation_method); 560 printf(" - bitpool_value [%d, %d] \n", configuration.min_bitpool_value, configuration.max_bitpool_value); 561 printf("\n"); 562 } 563 564 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 565 UNUSED(channel); 566 UNUSED(size); 567 uint16_t local_cid; 568 uint8_t status = 0xFF; 569 bd_addr_t adress; 570 571 if (packet_type != HCI_EVENT_PACKET) return; 572 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 573 switch (packet[2]){ 574 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 575 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 576 if (avrcp_cid != 0 && avrcp_cid != local_cid) { 577 printf("AVRCP Connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", avrcp_cid, local_cid); 578 return; 579 } 580 581 status = avrcp_subevent_connection_established_get_status(packet); 582 if (status != ERROR_CODE_SUCCESS){ 583 printf("AVRCP Connection failed: status 0x%02x\n", status); 584 avrcp_cid = 0; 585 return; 586 } 587 588 avrcp_cid = local_cid; 589 avrcp_connected = 1; 590 avrcp_subevent_connection_established_get_bd_addr(packet, adress); 591 printf("Channel successfully opened: %s, avrcp_cid 0x%02x\n", bd_addr_to_str(adress), avrcp_cid); 592 593 // automatically enable notifications 594 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 595 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 596 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED); 597 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 598 return; 599 } 600 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 601 printf("Channel released: avrcp_cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 602 avrcp_cid = 0; 603 avrcp_connected = 0; 604 return; 605 default: 606 break; 607 } 608 609 status = packet[5]; 610 if (!avrcp_cid) return; 611 612 // avoid printing INTERIM status 613 if (status == AVRCP_CTYPE_RESPONSE_INTERIM) return; 614 615 printf("AVRCP: command status: %s, ", avrcp_ctype2str(status)); 616 switch (packet[2]){ 617 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED: 618 printf("notification, playback status changed %s\n", avrcp_play_status2str(avrcp_subevent_notification_playback_status_changed_get_play_status(packet))); 619 return; 620 case AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED: 621 printf("notification, playing content changed\n"); 622 return; 623 case AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED: 624 printf("notification track changed\n"); 625 return; 626 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 627 printf("notification absolute volume changed %d\n", avrcp_subevent_notification_volume_changed_get_absolute_volume(packet)); 628 return; 629 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 630 printf("notification changed\n"); 631 return; 632 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 633 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 634 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 635 printf("%s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 636 break; 637 } 638 case AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO: 639 printf("AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO len %d \n", avrcp_subevent_now_playing_title_info_get_value_len(packet)); 640 if (avrcp_subevent_now_playing_title_info_get_value_len(packet) > 0){ 641 memcpy(value, avrcp_subevent_now_playing_title_info_get_value(packet), avrcp_subevent_now_playing_title_info_get_value_len(packet)); 642 printf(" Title: %s\n", value); 643 } 644 break; 645 646 case AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO: 647 if (avrcp_subevent_now_playing_artist_info_get_value_len(packet) > 0){ 648 memcpy(value, avrcp_subevent_now_playing_artist_info_get_value(packet), avrcp_subevent_now_playing_artist_info_get_value_len(packet)); 649 printf(" Title: %s\n", value); 650 } 651 break; 652 653 case AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO: 654 if (avrcp_subevent_now_playing_album_info_get_value_len(packet) > 0){ 655 memcpy(value, avrcp_subevent_now_playing_album_info_get_value(packet), avrcp_subevent_now_playing_album_info_get_value_len(packet)); 656 printf(" Title: %s\n", value); 657 } 658 break; 659 660 case AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO: 661 if (avrcp_subevent_now_playing_genre_info_get_value_len(packet) > 0){ 662 memcpy(value, avrcp_subevent_now_playing_genre_info_get_value(packet), avrcp_subevent_now_playing_genre_info_get_value_len(packet)); 663 printf(" Title: %s\n", value); 664 } 665 break; 666 667 // case AVRCP_SUBEVENT_NOW_PLAYING_INFO:{ 668 // uint8_t value[100]; 669 // printf("now playing: \n"); 670 // if (avrcp_subevent_now_playing_info_get_title_len(packet) > 0){ 671 // memcpy(value, avrcp_subevent_now_playing_info_get_title(packet), avrcp_subevent_now_playing_info_get_title_len(packet)); 672 // printf(" Title: %s\n", value); 673 // } 674 // if (avrcp_subevent_now_playing_info_get_album_len(packet) > 0){ 675 // memcpy(value, avrcp_subevent_now_playing_info_get_album(packet), avrcp_subevent_now_playing_info_get_album_len(packet)); 676 // printf(" Album: %s\n", value); 677 // } 678 // if (avrcp_subevent_now_playing_info_get_artist_len(packet) > 0){ 679 // memcpy(value, avrcp_subevent_now_playing_info_get_artist(packet), avrcp_subevent_now_playing_info_get_artist_len(packet)); 680 // printf(" Artist: %s\n", value); 681 // } 682 // if (avrcp_subevent_now_playing_info_get_genre_len(packet) > 0){ 683 // memcpy(value, avrcp_subevent_now_playing_info_get_genre(packet), avrcp_subevent_now_playing_info_get_genre_len(packet)); 684 // printf(" Genre: %s\n", value); 685 // } 686 // printf(" Track: %d\n", avrcp_subevent_now_playing_info_get_track(packet)); 687 // printf(" Total nr. tracks: %d\n", avrcp_subevent_now_playing_info_get_total_tracks(packet)); 688 // printf(" Song length: %d ms\n", avrcp_subevent_now_playing_info_get_song_length(packet)); 689 // break; 690 // } 691 case AVRCP_SUBEVENT_PLAY_STATUS: 692 printf("song length: %d ms, song position: %d ms, play status: %s\n", 693 avrcp_subevent_play_status_get_song_length(packet), 694 avrcp_subevent_play_status_get_song_position(packet), 695 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 696 break; 697 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 698 printf("operation done %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 699 break; 700 case AVRCP_SUBEVENT_OPERATION_START: 701 printf("operation start %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 702 break; 703 case AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE: 704 // response to set shuffle and repeat mode 705 printf("\n"); 706 break; 707 default: 708 printf("Not implemented\n"); 709 break; 710 } 711 } 712 713 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 714 UNUSED(channel); 715 UNUSED(size); 716 uint16_t cid; 717 bd_addr_t address; 718 uint8_t status; 719 720 if (packet_type != HCI_EVENT_PACKET) return; 721 if (hci_event_packet_get_type(packet) != HCI_EVENT_A2DP_META) return; 722 723 switch (packet[2]){ 724 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 725 printf(" -- a2dp sink demo: received non SBC codec. not implemented.\n"); 726 break; 727 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 728 printf(" -- a2dp sink demo: received SBC codec configuration.\n"); 729 sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 730 sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 731 sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 732 sbc_configuration.channel_mode = a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet); 733 sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 734 sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 735 sbc_configuration.allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 736 sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 737 sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 738 sbc_configuration.frames_per_buffer = sbc_configuration.subbands * sbc_configuration.block_length; 739 dump_sbc_configuration(sbc_configuration); 740 741 if (sbc_configuration.reconfigure){ 742 media_processing_close(); 743 } 744 // prepare media processing 745 media_processing_init(sbc_configuration); 746 break; 747 } 748 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 749 a2dp_subevent_stream_established_get_bd_addr(packet, address); 750 status = a2dp_subevent_stream_established_get_status(packet); 751 cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 752 printf("A2DP_SUBEVENT_STREAM_ESTABLISHED %d, %d \n", cid, a2dp_cid); 753 if (!a2dp_cid){ 754 // incoming connection 755 a2dp_cid = cid; 756 } else if (cid != a2dp_cid) { 757 break; 758 } 759 if (status){ 760 app_state = AVDTP_APPLICATION_IDLE; 761 printf(" -- a2dp sink demo: streaming connection failed, status 0x%02x\n", status); 762 break; 763 } 764 printf(" -- a2dp sink demo: streaming connection is established, address %s, a2dp cid 0x%02X, local_seid %d\n", bd_addr_to_str(address), a2dp_cid, local_seid); 765 766 memcpy(device_addr, address, 6); 767 768 local_seid = a2dp_subevent_stream_established_get_local_seid(packet); 769 app_state = AVDTP_APPLICATION_STREAMING; 770 break; 771 772 case A2DP_SUBEVENT_STREAM_STARTED: 773 cid = a2dp_subevent_stream_started_get_a2dp_cid(packet); 774 if (cid != a2dp_cid) break; 775 local_seid = a2dp_subevent_stream_started_get_local_seid(packet); 776 printf(" -- a2dp sink demo: stream started, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 777 // started 778 media_processing_init(sbc_configuration); 779 break; 780 781 case A2DP_SUBEVENT_STREAM_SUSPENDED: 782 cid = a2dp_subevent_stream_suspended_get_a2dp_cid(packet); 783 if (cid != a2dp_cid) break; 784 local_seid = a2dp_subevent_stream_suspended_get_local_seid(packet); 785 printf(" -- a2dp sink demo: stream paused, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 786 // paused/stopped 787 media_processing_close(); 788 break; 789 790 case A2DP_SUBEVENT_STREAM_RELEASED: 791 cid = a2dp_subevent_stream_released_get_a2dp_cid(packet); 792 if (cid != a2dp_cid) { 793 printf(" -- a2dp sink demo: unexpected cid 0x%02x instead of 0x%02x\n", cid, a2dp_cid); 794 break; 795 } 796 local_seid = a2dp_subevent_stream_released_get_local_seid(packet); 797 app_state = AVDTP_APPLICATION_IDLE; 798 printf(" -- a2dp sink demo: stream released, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 799 800 // paused/stopped 801 media_processing_close(); 802 break; 803 case A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 804 cid = a2dp_subevent_signaling_connection_released_get_a2dp_cid(packet); 805 if (cid != a2dp_cid) { 806 printf(" -- a2dp sink demo: unexpected cid 0x%02x instead of 0x%02x\n", cid, a2dp_cid); 807 break; 808 } 809 app_state = AVDTP_APPLICATION_IDLE; 810 printf(" -- a2dp sink demo: signaling connection released\n"); 811 break; 812 default: 813 printf(" -- a2dp sink demo: not parsed 0x%02x\n", packet[2]); 814 break; 815 } 816 } 817 818 #ifdef HAVE_BTSTACK_STDIN 819 static void show_usage(void){ 820 bd_addr_t iut_address; 821 gap_local_bd_addr(iut_address); 822 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 823 printf("b - AVDTP Sink create connection to addr %s\n", bd_addr_to_str(device_addr)); 824 printf("B - AVDTP Sink disconnect\n"); 825 printf("c - AVRCP create connection to addr %s\n", bd_addr_to_str(device_addr)); 826 printf("C - AVRCP disconnect\n"); 827 828 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 829 printf("O - get play status\n"); 830 printf("j - get now playing info\n"); 831 printf("k - play\n"); 832 printf("K - stop\n"); 833 printf("L - pause\n"); 834 printf("u - start fast forward\n"); 835 printf("U - stop fast forward\n"); 836 printf("n - start rewind\n"); 837 printf("N - stop rewind\n"); 838 printf("i - forward\n"); 839 printf("I - backward\n"); 840 printf("t - volume up\n"); 841 printf("T - volume down\n"); 842 printf("p - absolute volume of 50 percent\n"); 843 printf("M - mute\n"); 844 printf("r - skip\n"); 845 printf("q - query repeat and shuffle mode\n"); 846 printf("v - repeat single track\n"); 847 printf("x - repeat all tracks\n"); 848 printf("X - disable repeat mode\n"); 849 printf("z - shuffle all tracks\n"); 850 printf("Z - disable shuffle mode\n"); 851 printf("---\n"); 852 } 853 #endif 854 855 static uint8_t media_sbc_codec_capabilities[] = { 856 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 857 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 858 2, 53 859 }; 860 861 static uint8_t media_sbc_codec_configuration[] = { 862 (AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 863 (AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 864 2, 53 865 }; 866 867 #ifdef HAVE_BTSTACK_STDIN 868 static void stdin_process(char cmd){ 869 uint8_t status = ERROR_CODE_SUCCESS; 870 printf("stdin_process \n"); 871 if (!avrcp_connected){ 872 switch (cmd){ 873 case 'b': 874 case 'B': 875 case 'c': 876 break; 877 default: 878 printf("Command '%c' cannot be performed - please use 'c' to establish an AVRCP connection with device (addr %s).\n", cmd, bd_addr_to_str(device_addr)); 879 return; 880 } 881 882 } 883 884 switch (cmd){ 885 case 'b': 886 status = a2dp_sink_establish_stream(device_addr, local_seid, &a2dp_cid); 887 printf(" - Create AVDTP connection to addr %s, and local seid %d, expected cid 0x%02x.\n", bd_addr_to_str(device_addr), local_seid, a2dp_cid); 888 break; 889 case 'B': 890 printf(" - AVDTP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 891 status = avdtp_sink_disconnect(a2dp_cid); 892 break; 893 case 'c': 894 printf(" - Create AVRCP connection to addr %s.\n", bd_addr_to_str(device_addr)); 895 status = avrcp_controller_connect(device_addr, &avrcp_cid); 896 break; 897 case 'C': 898 printf(" - AVRCP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 899 status = avrcp_controller_disconnect(avrcp_cid); 900 break; 901 902 case '\n': 903 case '\r': 904 break; 905 case 'O': 906 printf(" - get play status\n"); 907 status = avrcp_controller_get_play_status(avrcp_cid); 908 break; 909 case 'j': 910 printf(" - get now playing info\n"); 911 status = avrcp_controller_get_now_playing_info(avrcp_cid); 912 break; 913 case 'k': 914 printf(" - play\n"); 915 status = avrcp_controller_play(avrcp_cid); 916 break; 917 case 'K': 918 printf(" - stop\n"); 919 status = avrcp_controller_stop(avrcp_cid); 920 break; 921 case 'L': 922 printf(" - pause\n"); 923 status = avrcp_controller_pause(avrcp_cid); 924 break; 925 case 'u': 926 printf(" - start fast forward\n"); 927 status = avrcp_controller_start_fast_forward(avrcp_cid); 928 break; 929 case 'U': 930 printf(" - stop fast forward\n"); 931 status = avrcp_controller_stop_fast_forward(avrcp_cid); 932 break; 933 case 'n': 934 printf(" - start rewind\n"); 935 status = avrcp_controller_start_rewind(avrcp_cid); 936 break; 937 case 'N': 938 printf(" - stop rewind\n"); 939 status = avrcp_controller_stop_rewind(avrcp_cid); 940 break; 941 case 'i': 942 printf(" - forward\n"); 943 status = avrcp_controller_forward(avrcp_cid); 944 break; 945 case 'I': 946 printf(" - backward\n"); 947 status = avrcp_controller_backward(avrcp_cid); 948 break; 949 case 't': 950 printf(" - volume up\n"); 951 status = avrcp_controller_volume_up(avrcp_cid); 952 break; 953 case 'T': 954 printf(" - volume down\n"); 955 status = avrcp_controller_volume_down(avrcp_cid); 956 break; 957 case 'p': 958 printf(" - absolute volume of 50 percent\n"); 959 status = avrcp_controller_set_absolute_volume(avrcp_cid, 50); 960 break; 961 case 'M': 962 printf(" - mute\n"); 963 status = avrcp_controller_mute(avrcp_cid); 964 break; 965 case 'r': 966 printf(" - skip\n"); 967 status = avrcp_controller_skip(avrcp_cid); 968 break; 969 case 'q': 970 printf(" - query repeat and shuffle mode\n"); 971 status = avrcp_controller_query_shuffle_and_repeat_modes(avrcp_cid); 972 break; 973 case 'v': 974 printf(" - repeat single track\n"); 975 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 976 break; 977 case 'x': 978 printf(" - repeat all tracks\n"); 979 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 980 break; 981 case 'X': 982 printf(" - disable repeat mode\n"); 983 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_OFF); 984 break; 985 case 'z': 986 printf(" - shuffle all tracks\n"); 987 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 988 break; 989 case 'Z': 990 printf(" - disable shuffle mode\n"); 991 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_OFF); 992 break; 993 default: 994 show_usage(); 995 return; 996 } 997 if (status != ERROR_CODE_SUCCESS){ 998 printf("Could not perform command, status 0x%2x\n", status); 999 } 1000 } 1001 #endif 1002 1003 1004 int btstack_main(int argc, const char * argv[]); 1005 int btstack_main(int argc, const char * argv[]){ 1006 1007 UNUSED(argc); 1008 (void)argv; 1009 1010 /* Register for HCI events */ 1011 hci_event_callback_registration.callback = &packet_handler; 1012 hci_add_event_handler(&hci_event_callback_registration); 1013 1014 l2cap_init(); 1015 // Initialize AVDTP Sink 1016 a2dp_sink_init(); 1017 a2dp_sink_register_packet_handler(&packet_handler); 1018 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 1019 1020 uint8_t status = a2dp_sink_create_stream_endpoint(AVDTP_AUDIO, AVDTP_CODEC_SBC, media_sbc_codec_capabilities, sizeof(media_sbc_codec_capabilities), media_sbc_codec_configuration, sizeof(media_sbc_codec_configuration), &local_seid); 1021 if (status != ERROR_CODE_SUCCESS){ 1022 printf("A2DP Sink: not enough memory to create local stream endpoint\n"); 1023 return 1; 1024 } 1025 // Initialize AVRCP COntroller 1026 avrcp_controller_init(); 1027 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 1028 1029 // Initialize SDP 1030 sdp_init(); 1031 // setup AVDTP sink 1032 memset(sdp_avdtp_sink_service_buffer, 0, sizeof(sdp_avdtp_sink_service_buffer)); 1033 a2dp_sink_create_sdp_record(sdp_avdtp_sink_service_buffer, 0x10001, 1, NULL, NULL); 1034 sdp_register_service(sdp_avdtp_sink_service_buffer); 1035 1036 // setup AVRCP 1037 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 1038 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10001, AVRCP_BROWSING_ENABLED, 1, NULL, NULL); 1039 sdp_register_service(sdp_avrcp_controller_service_buffer); 1040 1041 gap_set_local_name("A2DP Sink Demo 00:00:00:00:00:00"); 1042 gap_discoverable_control(1); 1043 gap_set_class_of_device(0x200408); 1044 printf("Starting BTstack ...\n"); 1045 // turn on! 1046 hci_power_control(HCI_POWER_ON); 1047 1048 #ifdef HAVE_AUDIO_DMA 1049 static btstack_data_source_t hal_audio_dma_data_source; 1050 // set up polling data_source 1051 btstack_run_loop_set_data_source_handler(&hal_audio_dma_data_source, &hal_audio_dma_process); 1052 btstack_run_loop_enable_data_source_callbacks(&hal_audio_dma_data_source, DATA_SOURCE_CALLBACK_POLL); 1053 btstack_run_loop_add_data_source(&hal_audio_dma_data_source); 1054 #endif 1055 1056 #ifdef HAVE_BTSTACK_STDIN 1057 // parse human readable Bluetooth address 1058 sscanf_bd_addr(device_addr_string, device_addr); 1059 btstack_stdin_setup(stdin_process); 1060 #endif 1061 1062 return 0; 1063 } 1064