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 sdp_avrcp_controller_service_buffer[200]; 188 189 #ifdef HAVE_PORTAUDIO 190 static int patestCallback( const void *inputBuffer, void *outputBuffer, 191 unsigned long framesPerBuffer, 192 const PaStreamCallbackTimeInfo* timeInfo, 193 PaStreamCallbackFlags statusFlags, 194 void *userData ) { 195 196 /** patestCallback is called from different thread, don't use hci_dump / log_info here without additional checks */ 197 198 (void) timeInfo; /* Prevent unused variable warnings. */ 199 (void) statusFlags; 200 (void) inputBuffer; 201 (void) userData; 202 203 int bytes_to_copy = framesPerBuffer * BYTES_PER_FRAME; 204 205 // fill with silence while paused 206 if (audio_stream_paused){ 207 208 if (btstack_ring_buffer_bytes_available(&ring_buffer) < PREBUFFER_BYTES){ 209 // printf("PA: silence\n"); 210 memset(outputBuffer, 0, bytes_to_copy); 211 return 0; 212 } else { 213 // resume playback 214 audio_stream_paused = 0; 215 } 216 } 217 218 // get data from ringbuffer 219 uint32_t bytes_read = 0; 220 btstack_ring_buffer_read(&ring_buffer, outputBuffer, bytes_to_copy, &bytes_read); 221 bytes_to_copy -= bytes_read; 222 223 // fill with 0 if not enough 224 if (bytes_to_copy){ 225 memset(outputBuffer + bytes_read, 0, bytes_to_copy); 226 audio_stream_paused = 1; 227 } 228 return 0; 229 } 230 #endif 231 232 #ifdef HAVE_AUDIO_DMA 233 static int next_buffer(int current){ 234 if (current == NUM_AUDIO_BUFFERS-1) return 0; 235 return current + 1; 236 } 237 static uint8_t * start_of_buffer(int num){ 238 return (uint8_t *) &audio_samples[num * DMA_AUDIO_FRAMES * 2]; 239 } 240 void hal_audio_dma_done(void){ 241 if (audio_stream_paused){ 242 hal_audio_dma_play((const uint8_t *) silent_buffer, DMA_AUDIO_FRAMES*4); 243 return; 244 } 245 // next buffer 246 int next_playback_buffer = next_buffer(playback_buffer); 247 uint8_t * playback_data; 248 if (next_playback_buffer == write_buffer){ 249 250 // TODO: stop codec while playing silence when getting 'stream paused' 251 252 // start playing silence 253 audio_stream_paused = 1; 254 hal_audio_dma_play((const uint8_t *) silent_buffer, DMA_AUDIO_FRAMES*4); 255 printf("%6u - paused - bytes in buffer %u\n", (int) btstack_run_loop_get_time_ms(), btstack_ring_buffer_bytes_available(&ring_buffer)); 256 return; 257 } 258 playback_buffer = next_playback_buffer; 259 playback_data = start_of_buffer(playback_buffer); 260 hal_audio_dma_play(playback_data, audio_samples_len[playback_buffer]); 261 // btstack_run_loop_embedded_trigger(); 262 } 263 #endif 264 265 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 266 267 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context){ 268 UNUSED(sample_rate); 269 UNUSED(context); 270 271 #ifdef STORE_SBC_TO_WAV_FILE 272 wav_writer_write_int16(num_samples*num_channels, data); 273 frame_count++; 274 #endif 275 276 #ifdef HAVE_PORTAUDIO 277 // store pcm samples in ringbuffer 278 btstack_ring_buffer_write(&ring_buffer, (uint8_t *)data, num_samples*num_channels*2); 279 280 if (!audio_stream_started){ 281 audio_stream_paused = 1; 282 /* -- start stream -- */ 283 PaError err = Pa_StartStream(stream); 284 if (err != paNoError){ 285 printf("Error starting the stream: \"%s\"\n", Pa_GetErrorText(err)); 286 return; 287 } 288 audio_stream_started = 1; 289 } 290 #endif 291 292 } 293 #endif 294 295 296 #ifdef HAVE_AUDIO_DMA 297 298 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context){ 299 UNUSED(sample_rate); 300 UNUSED(context); 301 302 // store in ring buffer 303 uint8_t * write_data = start_of_buffer(write_buffer); 304 uint16_t len = num_samples*num_channels*2; 305 memcpy(write_data, data, len); 306 audio_samples_len[write_buffer] = len; 307 308 // add/drop audio frame to fix drift 309 if (sbc_samples_fix > 0){ 310 memcpy(write_data + len, write_data + len - 4, 4); 311 audio_samples_len[write_buffer] += 4; 312 } 313 if (sbc_samples_fix < 0){ 314 audio_samples_len[write_buffer] -= 4; 315 } 316 317 write_buffer = next_buffer(write_buffer); 318 } 319 320 static void hal_audio_dma_process(btstack_data_source_t * ds, btstack_data_source_callback_type_t callback_type){ 321 UNUSED(ds); 322 UNUSED(callback_type); 323 324 if (!media_initialized) return; 325 326 int trigger_resume = 0; 327 if (audio_stream_paused) { 328 if (sbc_frame_size && btstack_ring_buffer_bytes_available(&ring_buffer) >= OPTIMAL_FRAMES_MIN * sbc_frame_size){ 329 trigger_resume = 1; 330 // reset buffers 331 playback_buffer = NUM_AUDIO_BUFFERS - 1; 332 write_buffer = 0; 333 } else { 334 return; 335 } 336 } 337 338 while (playback_buffer != write_buffer && btstack_ring_buffer_bytes_available(&ring_buffer) >= sbc_frame_size ){ 339 uint8_t frame[MAX_SBC_FRAME_SIZE]; 340 uint32_t bytes_read = 0; 341 btstack_ring_buffer_read(&ring_buffer, frame, sbc_frame_size, &bytes_read); 342 btstack_sbc_decoder_process_data(&state, 0, frame, sbc_frame_size); 343 } 344 345 if (trigger_resume){ 346 printf("%6u - resume\n", (int) btstack_run_loop_get_time_ms()); 347 audio_stream_paused = 0; 348 } 349 } 350 351 #endif 352 353 static int media_processing_init(avdtp_media_codec_configuration_sbc_t configuration){ 354 if (media_initialized) return 0; 355 356 #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 #endif 420 media_initialized = 1; 421 return 0; 422 } 423 424 static void media_processing_close(void){ 425 if (!media_initialized) return; 426 media_initialized = 0; 427 428 #ifdef STORE_SBC_TO_WAV_FILE 429 wav_writer_close(); 430 int total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 431 432 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); 433 printf("WAV Writer: Written %d frames to wav file: %s\n", frame_count, wav_filename); 434 #endif 435 436 #ifdef STORE_SBC_TO_SBC_FILE 437 fclose(sbc_file); 438 #endif 439 440 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 441 audio_stream_started = 0; 442 #endif 443 444 #ifdef HAVE_PORTAUDIO 445 printf("PortAudio: Steram closed\n"); 446 log_info("PortAudio: Stream closed"); 447 448 PaError err = Pa_StopStream(stream); 449 if (err != paNoError){ 450 printf("Error stopping the stream: \"%s\"\n", Pa_GetErrorText(err)); 451 log_error("Error stopping the stream: \"%s\"", Pa_GetErrorText(err)); 452 return; 453 } 454 err = Pa_CloseStream(stream); 455 if (err != paNoError){ 456 printf("Error closing the stream: \"%s\"\n", Pa_GetErrorText(err)); 457 log_error("Error closing the stream: \"%s\"", Pa_GetErrorText(err)); 458 return; 459 } 460 err = Pa_Terminate(); 461 if (err != paNoError){ 462 printf("Error terminating portaudio: \"%s\"\n", Pa_GetErrorText(err)); 463 log_error("Error terminating portaudio: \"%s\"", Pa_GetErrorText(err)); 464 return; 465 } 466 #endif 467 468 #ifdef HAVE_AUDIO_DMA 469 hal_audio_dma_close(); 470 #endif 471 } 472 473 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size){ 474 UNUSED(seid); 475 int pos = 0; 476 477 avdtp_media_packet_header_t media_header; 478 media_header.version = packet[pos] & 0x03; 479 media_header.padding = get_bit16(packet[pos],2); 480 media_header.extension = get_bit16(packet[pos],3); 481 media_header.csrc_count = (packet[pos] >> 4) & 0x0F; 482 483 pos++; 484 485 media_header.marker = get_bit16(packet[pos],0); 486 media_header.payload_type = (packet[pos] >> 1) & 0x7F; 487 pos++; 488 489 media_header.sequence_number = big_endian_read_16(packet, pos); 490 pos+=2; 491 492 media_header.timestamp = big_endian_read_32(packet, pos); 493 pos+=4; 494 495 media_header.synchronization_source = big_endian_read_32(packet, pos); 496 pos+=4; 497 498 UNUSED(media_header); 499 500 // TODO: read csrc list 501 502 // printf_hexdump( packet, pos ); 503 // printf("MEDIA HEADER: %u timestamp, version %u, padding %u, extension %u, csrc_count %u\n", 504 // media_header.timestamp, media_header.version, media_header.padding, media_header.extension, media_header.csrc_count); 505 // printf("MEDIA HEADER: marker %02x, payload_type %02x, sequence_number %u, synchronization_source %u\n", 506 // media_header.marker, media_header.payload_type, media_header.sequence_number, media_header.synchronization_source); 507 508 avdtp_sbc_codec_header_t sbc_header; 509 sbc_header.fragmentation = get_bit16(packet[pos], 7); 510 sbc_header.starting_packet = get_bit16(packet[pos], 6); 511 sbc_header.last_packet = get_bit16(packet[pos], 5); 512 sbc_header.num_frames = packet[pos] & 0x0f; 513 pos++; 514 515 #ifdef HAVE_AUDIO_DMA 516 // store sbc frame size for buffer management 517 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 518 #endif 519 520 UNUSED(sbc_header); 521 // 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); 522 // printf_hexdump( packet+pos, size-pos ); 523 524 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 525 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 526 #endif 527 528 #ifdef HAVE_AUDIO_DMA 529 btstack_ring_buffer_write(&ring_buffer, packet+pos, size-pos); 530 531 // decide on audio sync drift based on number of sbc frames in queue 532 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&ring_buffer) / sbc_frame_size; 533 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 534 sbc_samples_fix = 1; // duplicate last sample 535 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 536 sbc_samples_fix = 0; // nothing to do 537 } else { 538 sbc_samples_fix = -1; // drop last sample 539 } 540 541 // dump 542 printf("%6u %03u %d\n", (int) btstack_run_loop_get_time_ms(), sbc_frames_in_buffer, sbc_samples_fix); 543 544 #endif 545 546 #ifdef STORE_SBC_TO_SBC_FILE 547 fwrite(packet+pos, size-pos, 1, sbc_file); 548 #endif 549 } 550 551 static void dump_sbc_configuration(avdtp_media_codec_configuration_sbc_t configuration){ 552 printf(" -- a2dp sink demo: Received media codec 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_cid != 0 && avrcp_cid != local_cid) { 576 printf("AVRCP Connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", avrcp_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 Connection failed: status 0x%02x\n", status); 583 avrcp_cid = 0; 584 return; 585 } 586 587 avrcp_cid = local_cid; 588 avrcp_subevent_connection_established_get_bd_addr(packet, adress); 589 printf("Channel successfully opened: %s, avrcp_cid 0x%02x\n", bd_addr_to_str(adress), avrcp_cid); 590 591 // automatically enable notifications 592 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 593 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 594 return; 595 } 596 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 597 printf("Channel released: avrcp_cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 598 avrcp_cid = 0; 599 return; 600 default: 601 break; 602 } 603 604 status = packet[5]; 605 if (!avrcp_cid) return; 606 607 // avoid printing INTERIM status 608 if (status == AVRCP_CTYPE_RESPONSE_INTERIM) return; 609 610 printf("AVRCP: command status: %s, ", avrcp_ctype2str(status)); 611 switch (packet[2]){ 612 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED: 613 printf("notification, playback status changed %s\n", avrcp_play_status2str(avrcp_subevent_notification_playback_status_changed_get_play_status(packet))); 614 return; 615 case AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED: 616 printf("notification, playing content changed\n"); 617 return; 618 case AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED: 619 printf("notification track changed\n"); 620 return; 621 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 622 printf("notification absolute volume changed %d\n", avrcp_subevent_notification_volume_changed_get_absolute_volume(packet)); 623 return; 624 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 625 printf("notification changed\n"); 626 return; 627 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 628 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 629 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 630 printf("%s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 631 break; 632 } 633 case AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO: 634 printf("AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO len %d \n", avrcp_subevent_now_playing_title_info_get_value_len(packet)); 635 if (avrcp_subevent_now_playing_title_info_get_value_len(packet) > 0){ 636 memcpy(value, avrcp_subevent_now_playing_title_info_get_value(packet), avrcp_subevent_now_playing_title_info_get_value_len(packet)); 637 printf(" Title: %s\n", value); 638 } 639 break; 640 641 case AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO: 642 if (avrcp_subevent_now_playing_artist_info_get_value_len(packet) > 0){ 643 memcpy(value, avrcp_subevent_now_playing_artist_info_get_value(packet), avrcp_subevent_now_playing_artist_info_get_value_len(packet)); 644 printf(" Title: %s\n", value); 645 } 646 break; 647 648 case AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO: 649 if (avrcp_subevent_now_playing_album_info_get_value_len(packet) > 0){ 650 memcpy(value, avrcp_subevent_now_playing_album_info_get_value(packet), avrcp_subevent_now_playing_album_info_get_value_len(packet)); 651 printf(" Title: %s\n", value); 652 } 653 break; 654 655 case AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO: 656 if (avrcp_subevent_now_playing_genre_info_get_value_len(packet) > 0){ 657 memcpy(value, avrcp_subevent_now_playing_genre_info_get_value(packet), avrcp_subevent_now_playing_genre_info_get_value_len(packet)); 658 printf(" Title: %s\n", value); 659 } 660 break; 661 662 // case AVRCP_SUBEVENT_NOW_PLAYING_INFO:{ 663 // uint8_t value[100]; 664 // printf("now playing: \n"); 665 // if (avrcp_subevent_now_playing_info_get_title_len(packet) > 0){ 666 // memcpy(value, avrcp_subevent_now_playing_info_get_title(packet), avrcp_subevent_now_playing_info_get_title_len(packet)); 667 // printf(" Title: %s\n", value); 668 // } 669 // if (avrcp_subevent_now_playing_info_get_album_len(packet) > 0){ 670 // memcpy(value, avrcp_subevent_now_playing_info_get_album(packet), avrcp_subevent_now_playing_info_get_album_len(packet)); 671 // printf(" Album: %s\n", value); 672 // } 673 // if (avrcp_subevent_now_playing_info_get_artist_len(packet) > 0){ 674 // memcpy(value, avrcp_subevent_now_playing_info_get_artist(packet), avrcp_subevent_now_playing_info_get_artist_len(packet)); 675 // printf(" Artist: %s\n", value); 676 // } 677 // if (avrcp_subevent_now_playing_info_get_genre_len(packet) > 0){ 678 // memcpy(value, avrcp_subevent_now_playing_info_get_genre(packet), avrcp_subevent_now_playing_info_get_genre_len(packet)); 679 // printf(" Genre: %s\n", value); 680 // } 681 // printf(" Track: %d\n", avrcp_subevent_now_playing_info_get_track(packet)); 682 // printf(" Total nr. tracks: %d\n", avrcp_subevent_now_playing_info_get_total_tracks(packet)); 683 // printf(" Song length: %d ms\n", avrcp_subevent_now_playing_info_get_song_length(packet)); 684 // break; 685 // } 686 case AVRCP_SUBEVENT_PLAY_STATUS: 687 printf("song length: %d ms, song position: %d ms, play status: %s\n", 688 avrcp_subevent_play_status_get_song_length(packet), 689 avrcp_subevent_play_status_get_song_position(packet), 690 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 691 break; 692 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 693 printf("operation done %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 694 break; 695 case AVRCP_SUBEVENT_OPERATION_START: 696 printf("operation start %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 697 break; 698 case AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE: 699 // response to set shuffle and repeat mode 700 printf("\n"); 701 break; 702 default: 703 printf("Not implemented\n"); 704 break; 705 } 706 } 707 708 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 709 UNUSED(channel); 710 UNUSED(size); 711 uint16_t cid; 712 bd_addr_t address; 713 uint8_t status; 714 715 if (packet_type != HCI_EVENT_PACKET) return; 716 if (hci_event_packet_get_type(packet) != HCI_EVENT_A2DP_META) return; 717 718 switch (packet[2]){ 719 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 720 printf(" -- a2dp sink demo: received non SBC codec. not implemented.\n"); 721 break; 722 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 723 printf(" -- a2dp sink demo: received SBC codec configuration.\n"); 724 sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 725 sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 726 sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 727 sbc_configuration.channel_mode = a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet); 728 sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 729 sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 730 sbc_configuration.allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 731 sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 732 sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 733 sbc_configuration.frames_per_buffer = sbc_configuration.subbands * sbc_configuration.block_length; 734 dump_sbc_configuration(sbc_configuration); 735 736 if (sbc_configuration.reconfigure){ 737 media_processing_close(); 738 } 739 // prepare media processing 740 media_processing_init(sbc_configuration); 741 break; 742 } 743 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 744 a2dp_subevent_stream_established_get_bd_addr(packet, address); 745 status = a2dp_subevent_stream_established_get_status(packet); 746 cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 747 if (cid != a2dp_cid) break; 748 if (status){ 749 app_state = AVDTP_APPLICATION_IDLE; 750 printf(" -- a2dp sink demo: streaming connection failed, status 0x%02x\n", status); 751 break; 752 } 753 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); 754 local_seid = a2dp_subevent_stream_established_get_local_seid(packet); 755 app_state = AVDTP_APPLICATION_STREAMING; 756 break; 757 758 case A2DP_SUBEVENT_STREAM_STARTED: 759 cid = a2dp_subevent_stream_started_get_a2dp_cid(packet); 760 if (cid != a2dp_cid) break; 761 local_seid = a2dp_subevent_stream_started_get_local_seid(packet); 762 printf(" -- a2dp sink demo: stream started, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 763 // started 764 media_processing_init(sbc_configuration); 765 break; 766 767 case A2DP_SUBEVENT_STREAM_SUSPENDED: 768 cid = a2dp_subevent_stream_suspended_get_a2dp_cid(packet); 769 if (cid != a2dp_cid) break; 770 local_seid = a2dp_subevent_stream_suspended_get_local_seid(packet); 771 printf(" -- a2dp sink demo: stream paused, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 772 // paused/stopped 773 media_processing_close(); 774 break; 775 776 case A2DP_SUBEVENT_STREAM_RELEASED: 777 cid = a2dp_subevent_stream_released_get_a2dp_cid(packet); 778 if (cid != a2dp_cid) { 779 printf(" -- a2dp sink demo: unexpected cid 0x%02x instead of 0x%02x\n", cid, a2dp_cid); 780 break; 781 } 782 local_seid = a2dp_subevent_stream_released_get_local_seid(packet); 783 app_state = AVDTP_APPLICATION_IDLE; 784 printf(" -- a2dp sink demo: stream released, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 785 786 // paused/stopped 787 media_processing_close(); 788 break; 789 case A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 790 cid = a2dp_subevent_signaling_connection_released_get_a2dp_cid(packet); 791 if (cid != a2dp_cid) { 792 printf(" -- a2dp sink demo: unexpected cid 0x%02x instead of 0x%02x\n", cid, a2dp_cid); 793 break; 794 } 795 app_state = AVDTP_APPLICATION_IDLE; 796 printf(" -- a2dp sink demo: signaling connection released\n"); 797 break; 798 default: 799 printf(" -- a2dp sink demo: not parsed 0x%02x\n", packet[2]); 800 break; 801 } 802 } 803 804 #ifdef HAVE_BTSTACK_STDIN 805 static void show_usage(void){ 806 bd_addr_t iut_address; 807 gap_local_bd_addr(iut_address); 808 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 809 printf("b - AVDTP Sink create connection to addr %s\n", device_addr_string); 810 printf("B - AVDTP Sink disconnect\n"); 811 printf("c - AVRCP create connection to addr %s\n", device_addr_string); 812 printf("C - AVRCP disconnect\n"); 813 814 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 815 printf("O - get play status\n"); 816 printf("j - get now playing info\n"); 817 printf("k - play\n"); 818 printf("K - stop\n"); 819 printf("L - pause\n"); 820 printf("u - start fast forward\n"); 821 printf("U - stop fast forward\n"); 822 printf("n - start rewind\n"); 823 printf("N - stop rewind\n"); 824 printf("i - forward\n"); 825 printf("I - backward\n"); 826 printf("t - volume up\n"); 827 printf("T - volume down\n"); 828 printf("p - absolute volume of 50 percent\n"); 829 printf("M - mute\n"); 830 printf("r - skip\n"); 831 printf("q - query repeat and shuffle mode\n"); 832 printf("v - repeat single track\n"); 833 printf("x - repeat all tracks\n"); 834 printf("X - disable repeat mode\n"); 835 printf("z - shuffle all tracks\n"); 836 printf("Z - disable shuffle mode\n"); 837 printf("---\n"); 838 } 839 #endif 840 841 static uint8_t media_sbc_codec_capabilities[] = { 842 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 843 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 844 2, 53 845 }; 846 847 static uint8_t media_sbc_codec_configuration[] = { 848 (AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 849 (AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 850 2, 53 851 }; 852 853 #ifdef HAVE_BTSTACK_STDIN 854 static void stdin_process(char cmd){ 855 uint8_t status = ERROR_CODE_SUCCESS; 856 switch (cmd){ 857 case 'b': 858 printf(" - Create AVDTP connection to addr %s, and local seid %d.\n", bd_addr_to_str(device_addr), local_seid); 859 status = a2dp_sink_establish_stream(device_addr, local_seid, &a2dp_cid); 860 break; 861 case 'B': 862 printf(" - AVDTP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 863 status = avdtp_sink_disconnect(a2dp_cid); 864 break; 865 case 'c': 866 printf(" - Create AVRCP connection to addr %s.\n", bd_addr_to_str(device_addr)); 867 status = avrcp_controller_connect(device_addr, &avrcp_cid); 868 break; 869 case 'C': 870 printf(" - AVRCP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 871 status = avrcp_controller_disconnect(avrcp_cid); 872 break; 873 874 case '\n': 875 case '\r': 876 break; 877 case 'O': 878 printf(" - get play status\n"); 879 status = avrcp_controller_get_play_status(avrcp_cid); 880 break; 881 case 'j': 882 printf(" - get now playing info\n"); 883 status = avrcp_controller_get_now_playing_info(avrcp_cid); 884 break; 885 case 'k': 886 printf(" - play\n"); 887 status = avrcp_controller_play(avrcp_cid); 888 break; 889 case 'K': 890 printf(" - stop\n"); 891 status = avrcp_controller_stop(avrcp_cid); 892 break; 893 case 'L': 894 printf(" - pause\n"); 895 status = avrcp_controller_pause(avrcp_cid); 896 break; 897 case 'u': 898 printf(" - start fast forward\n"); 899 status = avrcp_controller_start_fast_forward(avrcp_cid); 900 break; 901 case 'U': 902 printf(" - stop fast forward\n"); 903 status = avrcp_controller_stop_fast_forward(avrcp_cid); 904 break; 905 case 'n': 906 printf(" - start rewind\n"); 907 status = avrcp_controller_start_rewind(avrcp_cid); 908 break; 909 case 'N': 910 printf(" - stop rewind\n"); 911 status = avrcp_controller_stop_rewind(avrcp_cid); 912 break; 913 case 'i': 914 printf(" - forward\n"); 915 status = avrcp_controller_forward(avrcp_cid); 916 break; 917 case 'I': 918 printf(" - backward\n"); 919 status = avrcp_controller_backward(avrcp_cid); 920 break; 921 case 't': 922 printf(" - volume up\n"); 923 status = avrcp_controller_volume_up(avrcp_cid); 924 break; 925 case 'T': 926 printf(" - volume down\n"); 927 status = avrcp_controller_volume_down(avrcp_cid); 928 break; 929 case 'p': 930 printf(" - absolute volume of 50 percent\n"); 931 status = avrcp_controller_set_absolute_volume(avrcp_cid, 50); 932 break; 933 case 'M': 934 printf(" - mute\n"); 935 status = avrcp_controller_mute(avrcp_cid); 936 break; 937 case 'r': 938 printf(" - skip\n"); 939 status = avrcp_controller_skip(avrcp_cid); 940 break; 941 case 'q': 942 printf(" - query repeat and shuffle mode\n"); 943 status = avrcp_controller_query_shuffle_and_repeat_modes(avrcp_cid); 944 break; 945 case 'v': 946 printf(" - repeat single track\n"); 947 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 948 break; 949 case 'x': 950 printf(" - repeat all tracks\n"); 951 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 952 break; 953 case 'X': 954 printf(" - disable repeat mode\n"); 955 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_OFF); 956 break; 957 case 'z': 958 printf(" - shuffle all tracks\n"); 959 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 960 break; 961 case 'Z': 962 printf(" - disable shuffle mode\n"); 963 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_OFF); 964 break; 965 default: 966 show_usage(); 967 return; 968 } 969 if (status != ERROR_CODE_SUCCESS){ 970 printf("Could not perform command, status 0x%2x\n", status); 971 } 972 } 973 #endif 974 975 976 int btstack_main(int argc, const char * argv[]); 977 int btstack_main(int argc, const char * argv[]){ 978 979 UNUSED(argc); 980 (void)argv; 981 982 /* Register for HCI events */ 983 hci_event_callback_registration.callback = &packet_handler; 984 hci_add_event_handler(&hci_event_callback_registration); 985 986 l2cap_init(); 987 // Initialize AVDTP Sink 988 a2dp_sink_init(); 989 a2dp_sink_register_packet_handler(&packet_handler); 990 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 991 992 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); 993 if (status != ERROR_CODE_SUCCESS){ 994 printf("A2DP Sink: not enough memory to create local stream endpoint\n"); 995 return 1; 996 } 997 // Initialize AVRCP COntroller 998 avrcp_controller_init(); 999 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 1000 1001 // Initialize SDP 1002 sdp_init(); 1003 // setup AVDTP sink 1004 memset(sdp_avdtp_sink_service_buffer, 0, sizeof(sdp_avdtp_sink_service_buffer)); 1005 a2dp_sink_create_sdp_record(sdp_avdtp_sink_service_buffer, 0x10001, 1, NULL, NULL); 1006 sdp_register_service(sdp_avdtp_sink_service_buffer); 1007 1008 // setup AVRCP 1009 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 1010 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10001, AVRCP_BROWSING_ENABLED, 1, NULL, NULL); 1011 sdp_register_service(sdp_avrcp_controller_service_buffer); 1012 1013 gap_set_local_name("A2DP Sink Demo 00:00:00:00:00:00"); 1014 gap_discoverable_control(1); 1015 gap_set_class_of_device(0x200408); 1016 printf("Starting BTstack ...\n"); 1017 // turn on! 1018 hci_power_control(HCI_POWER_ON); 1019 1020 #ifdef HAVE_AUDIO_DMA 1021 static btstack_data_source_t hal_audio_dma_data_source; 1022 // set up polling data_source 1023 btstack_run_loop_set_data_source_handler(&hal_audio_dma_data_source, &hal_audio_dma_process); 1024 btstack_run_loop_enable_data_source_callbacks(&hal_audio_dma_data_source, DATA_SOURCE_CALLBACK_POLL); 1025 btstack_run_loop_add_data_source(&hal_audio_dma_data_source); 1026 #endif 1027 1028 #ifdef HAVE_BTSTACK_STDIN 1029 // parse human readable Bluetooth address 1030 sscanf_bd_addr(device_addr_string, device_addr); 1031 btstack_stdin_setup(stdin_process); 1032 #endif 1033 1034 return 0; 1035 } 1036