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 static btstack_ring_buffer_t ring_buffer; 117 static int total_num_samples = 0; 118 #endif 119 120 // WAV File 121 #ifdef STORE_SBC_TO_WAV_FILE 122 static int frame_count = 0; 123 static char * wav_filename = "avdtp_sink.wav"; 124 #endif 125 126 #ifdef STORE_SBC_TO_SBC_FILE 127 static FILE * sbc_file; 128 static char * sbc_filename = "avdtp_sink.sbc"; 129 #endif 130 131 typedef struct { 132 // bitmaps 133 uint8_t sampling_frequency_bitmap; 134 uint8_t channel_mode_bitmap; 135 uint8_t block_length_bitmap; 136 uint8_t subbands_bitmap; 137 uint8_t allocation_method_bitmap; 138 uint8_t min_bitpool_value; 139 uint8_t max_bitpool_value; 140 } adtvp_media_codec_information_sbc_t; 141 142 typedef struct { 143 int reconfigure; 144 int num_channels; 145 int sampling_frequency; 146 int channel_mode; 147 int block_length; 148 int subbands; 149 int allocation_method; 150 int min_bitpool_value; 151 int max_bitpool_value; 152 int frames_per_buffer; 153 } avdtp_media_codec_configuration_sbc_t; 154 155 #ifdef HAVE_BTSTACK_STDIN 156 // mac 2011: static bd_addr_t remote = {0x04, 0x0C, 0xCE, 0xE4, 0x85, 0xD3}; 157 // pts: static bd_addr_t remote = {0x00, 0x1B, 0xDC, 0x08, 0x0A, 0xA5}; 158 // mac 2013: 159 // mac 2013: static const char * device_addr_string = "84:38:35:65:d1:15"; 160 // iPhone 5S: 161 static const char * device_addr_string = "54:E4:3A:26:A2:39"; 162 #endif 163 164 // bt dongle: -u 02-02 static bd_addr_t remote = {0x00, 0x02, 0x72, 0xDC, 0x31, 0xC1}; 165 166 static uint8_t sdp_avdtp_sink_service_buffer[150]; 167 static avdtp_media_codec_configuration_sbc_t sbc_configuration; 168 static uint16_t a2dp_cid = 0; 169 static uint8_t local_seid = 0; 170 171 typedef enum { 172 AVDTP_APPLICATION_IDLE, 173 AVDTP_APPLICATION_CONNECTED, 174 AVDTP_APPLICATION_STREAMING 175 } avdtp_application_state_t; 176 177 avdtp_application_state_t app_state = AVDTP_APPLICATION_IDLE; 178 179 static btstack_packet_callback_registration_t hci_event_callback_registration; 180 181 static int media_initialized = 0; 182 183 #ifdef HAVE_BTSTACK_STDIN 184 static bd_addr_t device_addr; 185 #endif 186 187 static uint16_t avrcp_cid = 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 total_num_samples+=num_samples*num_channels; 279 280 // store pcm samples in ringbuffer 281 btstack_ring_buffer_write(&ring_buffer, (uint8_t *)data, num_samples*num_channels*2); 282 283 if (!audio_stream_started){ 284 audio_stream_paused = 1; 285 /* -- start stream -- */ 286 PaError err = Pa_StartStream(stream); 287 if (err != paNoError){ 288 printf("Error starting the stream: \"%s\"\n", Pa_GetErrorText(err)); 289 return; 290 } 291 audio_stream_started = 1; 292 } 293 #endif 294 295 } 296 #endif 297 298 299 #ifdef HAVE_AUDIO_DMA 300 301 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context){ 302 UNUSED(sample_rate); 303 UNUSED(context); 304 total_num_samples+=num_samples*num_channels; 305 306 // store in ring buffer 307 uint8_t * write_data = start_of_buffer(write_buffer); 308 uint16_t len = num_samples*num_channels*2; 309 memcpy(write_data, data, len); 310 audio_samples_len[write_buffer] = len; 311 312 // add/drop audio frame to fix drift 313 if (sbc_samples_fix > 0){ 314 memcpy(write_data + len, write_data + len - 4, 4); 315 audio_samples_len[write_buffer] += 4; 316 } 317 if (sbc_samples_fix < 0){ 318 audio_samples_len[write_buffer] -= 4; 319 } 320 321 write_buffer = next_buffer(write_buffer); 322 } 323 324 static void hal_audio_dma_process(btstack_data_source_t * ds, btstack_data_source_callback_type_t callback_type){ 325 UNUSED(ds); 326 UNUSED(callback_type); 327 328 if (!media_initialized) return; 329 330 int trigger_resume = 0; 331 if (audio_stream_paused) { 332 if (sbc_frame_size && btstack_ring_buffer_bytes_available(&ring_buffer) >= OPTIMAL_FRAMES_MIN * sbc_frame_size){ 333 trigger_resume = 1; 334 // reset buffers 335 playback_buffer = NUM_AUDIO_BUFFERS - 1; 336 write_buffer = 0; 337 } else { 338 return; 339 } 340 } 341 342 while (playback_buffer != write_buffer && btstack_ring_buffer_bytes_available(&ring_buffer) >= sbc_frame_size ){ 343 uint8_t frame[MAX_SBC_FRAME_SIZE]; 344 uint32_t bytes_read = 0; 345 btstack_ring_buffer_read(&ring_buffer, frame, sbc_frame_size, &bytes_read); 346 btstack_sbc_decoder_process_data(&state, 0, frame, sbc_frame_size); 347 } 348 349 if (trigger_resume){ 350 printf("%6u - resume\n", (int) btstack_run_loop_get_time_ms()); 351 audio_stream_paused = 0; 352 } 353 } 354 355 #endif 356 357 static int media_processing_init(avdtp_media_codec_configuration_sbc_t configuration){ 358 359 if (media_initialized) return 0; 360 361 #ifdef DECODE_SBC 362 btstack_sbc_decoder_init(&state, mode, handle_pcm_data, NULL); 363 #endif 364 365 #ifdef STORE_SBC_TO_WAV_FILE 366 wav_writer_open(wav_filename, configuration.num_channels, configuration.sampling_frequency); 367 #endif 368 369 #ifdef STORE_SBC_TO_SBC_FILE 370 sbc_file = fopen(sbc_filename, "wb"); 371 #endif 372 373 #ifdef HAVE_PORTAUDIO 374 // int frames_per_buffer = configuration.frames_per_buffer; 375 PaError err; 376 PaStreamParameters outputParameters; 377 const PaDeviceInfo *deviceInfo; 378 379 /* -- initialize PortAudio -- */ 380 err = Pa_Initialize(); 381 if (err != paNoError){ 382 printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err)); 383 return err; 384 } 385 /* -- setup input and output -- */ 386 outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */ 387 outputParameters.channelCount = configuration.num_channels; 388 outputParameters.sampleFormat = PA_SAMPLE_TYPE; 389 outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency; 390 outputParameters.hostApiSpecificStreamInfo = NULL; 391 deviceInfo = Pa_GetDeviceInfo( outputParameters.device ); 392 printf("PortAudio: Output device: %s\n", deviceInfo->name); 393 log_info("PortAudio: Output device: %s", deviceInfo->name); 394 /* -- setup stream -- */ 395 err = Pa_OpenStream( 396 &stream, 397 NULL, /* &inputParameters */ 398 &outputParameters, 399 configuration.sampling_frequency, 400 0, 401 paClipOff, /* we won't output out of range samples so don't bother clipping them */ 402 patestCallback, /* use callback */ 403 NULL ); 404 405 if (err != paNoError){ 406 printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err)); 407 return err; 408 } 409 log_info("PortAudio: stream opened"); 410 printf("PortAudio: stream opened\n"); 411 #endif 412 #ifdef HAVE_AUDIO_DMA 413 audio_stream_paused = 1; 414 hal_audio_dma_init(configuration.sampling_frequency); 415 hal_audio_dma_set_audio_played(&hal_audio_dma_done); 416 // start playing silence 417 hal_audio_dma_done(); 418 #endif 419 420 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 421 memset(ring_buffer_storage, 0, sizeof(ring_buffer_storage)); 422 btstack_ring_buffer_init(&ring_buffer, ring_buffer_storage, sizeof(ring_buffer_storage)); 423 audio_stream_started = 0; 424 #endif 425 media_initialized = 1; 426 return 0; 427 } 428 429 static void media_processing_close(void){ 430 if (!media_initialized) return; 431 media_initialized = 0; 432 433 #ifdef STORE_SBC_TO_WAV_FILE 434 printf("WAV Writer: close file.\n"); 435 wav_writer_close(); 436 int total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 437 438 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); 439 printf("WAV Writer: Written %d frames to wav file: %s\n", frame_count, wav_filename); 440 #endif 441 442 #ifdef STORE_SBC_TO_SBC_FILE 443 fclose(sbc_file); 444 #endif 445 446 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 447 audio_stream_started = 0; 448 #endif 449 450 #ifdef HAVE_PORTAUDIO 451 printf("PortAudio: Steram closed\n"); 452 log_info("PortAudio: Stream closed"); 453 454 PaError err = Pa_StopStream(stream); 455 if (err != paNoError){ 456 printf("Error stopping the stream: \"%s\"\n", Pa_GetErrorText(err)); 457 log_error("Error stopping the stream: \"%s\"", Pa_GetErrorText(err)); 458 return; 459 } 460 err = Pa_CloseStream(stream); 461 if (err != paNoError){ 462 printf("Error closing the stream: \"%s\"\n", Pa_GetErrorText(err)); 463 log_error("Error closing the stream: \"%s\"", Pa_GetErrorText(err)); 464 return; 465 } 466 err = Pa_Terminate(); 467 if (err != paNoError){ 468 printf("Error terminating portaudio: \"%s\"\n", Pa_GetErrorText(err)); 469 log_error("Error terminating portaudio: \"%s\"", Pa_GetErrorText(err)); 470 return; 471 } 472 #endif 473 474 #ifdef HAVE_AUDIO_DMA 475 hal_audio_dma_close(); 476 #endif 477 } 478 479 static void handle_l2cap_media_data_packet(avdtp_stream_endpoint_t * stream_endpoint, uint8_t *packet, uint16_t size){ 480 481 UNUSED(stream_endpoint); 482 483 int pos = 0; 484 485 avdtp_media_packet_header_t media_header; 486 media_header.version = packet[pos] & 0x03; 487 media_header.padding = get_bit16(packet[pos],2); 488 media_header.extension = get_bit16(packet[pos],3); 489 media_header.csrc_count = (packet[pos] >> 4) & 0x0F; 490 491 pos++; 492 493 media_header.marker = get_bit16(packet[pos],0); 494 media_header.payload_type = (packet[pos] >> 1) & 0x7F; 495 pos++; 496 497 media_header.sequence_number = big_endian_read_16(packet, pos); 498 pos+=2; 499 500 media_header.timestamp = big_endian_read_32(packet, pos); 501 pos+=4; 502 503 media_header.synchronization_source = big_endian_read_32(packet, pos); 504 pos+=4; 505 506 UNUSED(media_header); 507 508 // TODO: read csrc list 509 510 // printf_hexdump( packet, pos ); 511 // printf("MEDIA HEADER: %u timestamp, version %u, padding %u, extension %u, csrc_count %u\n", 512 // media_header.timestamp, media_header.version, media_header.padding, media_header.extension, media_header.csrc_count); 513 // printf("MEDIA HEADER: marker %02x, payload_type %02x, sequence_number %u, synchronization_source %u\n", 514 // media_header.marker, media_header.payload_type, media_header.sequence_number, media_header.synchronization_source); 515 516 avdtp_sbc_codec_header_t sbc_header; 517 sbc_header.fragmentation = get_bit16(packet[pos], 7); 518 sbc_header.starting_packet = get_bit16(packet[pos], 6); 519 sbc_header.last_packet = get_bit16(packet[pos], 5); 520 sbc_header.num_frames = packet[pos] & 0x0f; 521 pos++; 522 523 #ifdef HAVE_AUDIO_DMA 524 // store sbc frame size for buffer management 525 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 526 #endif 527 528 UNUSED(sbc_header); 529 // 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); 530 // printf_hexdump( packet+pos, size-pos ); 531 532 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 533 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 534 #endif 535 536 #ifdef HAVE_AUDIO_DMA 537 btstack_ring_buffer_write(&ring_buffer, packet+pos, size-pos); 538 539 // decide on audio sync drift based on number of sbc frames in queue 540 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&ring_buffer) / sbc_frame_size; 541 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 542 sbc_samples_fix = 1; // duplicate last sample 543 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 544 sbc_samples_fix = 0; // nothing to do 545 } else { 546 sbc_samples_fix = -1; // drop last sample 547 } 548 549 // dump 550 printf("%6u %03u %d\n", (int) btstack_run_loop_get_time_ms(), sbc_frames_in_buffer, sbc_samples_fix); 551 552 #endif 553 554 #ifdef STORE_SBC_TO_SBC_FILE 555 fwrite(packet+pos, size-pos, 1, sbc_file); 556 #endif 557 } 558 559 static void dump_sbc_configuration(avdtp_media_codec_configuration_sbc_t configuration){ 560 printf(" -- a2dp sink demo: Received media codec configuration:\n"); 561 printf(" - num_channels: %d\n", configuration.num_channels); 562 printf(" - sampling_frequency: %d\n", configuration.sampling_frequency); 563 printf(" - channel_mode: %d\n", configuration.channel_mode); 564 printf(" - block_length: %d\n", configuration.block_length); 565 printf(" - subbands: %d\n", configuration.subbands); 566 printf(" - allocation_method: %d\n", configuration.allocation_method); 567 printf(" - bitpool_value [%d, %d] \n", configuration.min_bitpool_value, configuration.max_bitpool_value); 568 printf("\n"); 569 } 570 571 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 572 UNUSED(channel); 573 UNUSED(size); 574 bd_addr_t event_addr; 575 uint16_t local_cid; 576 uint8_t status = 0xFF; 577 578 if (packet_type != HCI_EVENT_PACKET) return; 579 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 580 switch (packet[2]){ 581 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 582 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 583 if (avrcp_cid != 0 && avrcp_cid != local_cid) { 584 printf("AVRCP Connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", avrcp_cid, local_cid); 585 return; 586 } 587 588 status = avrcp_subevent_connection_established_get_status(packet); 589 if (status != ERROR_CODE_SUCCESS){ 590 printf("AVRCP Connection failed: status 0x%02x\n", status); 591 avrcp_cid = 0; 592 return; 593 } 594 595 avrcp_cid = local_cid; 596 avrcp_subevent_connection_established_get_bd_addr(packet, event_addr); 597 printf("Channel successfully opened: %s, avrcp_cid 0x%02x\n", bd_addr_to_str(event_addr), avrcp_cid); 598 599 // automatically enable notifications 600 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 601 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 602 return; 603 } 604 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 605 printf("Channel released: avrcp_cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 606 avrcp_cid = 0; 607 return; 608 default: 609 break; 610 } 611 612 status = packet[5]; 613 if (!avrcp_cid) return; 614 615 // avoid printing INTERIM status 616 if (status == AVRCP_CTYPE_RESPONSE_INTERIM) return; 617 618 printf("AVRCP: command status: %s, ", avrcp_ctype2str(status)); 619 switch (packet[2]){ 620 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED: 621 printf("notification, playback status changed %s\n", avrcp_play_status2str(avrcp_subevent_notification_playback_status_changed_get_play_status(packet))); 622 return; 623 case AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED: 624 printf("notification, playing content changed\n"); 625 return; 626 case AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED: 627 printf("notification track changed\n"); 628 return; 629 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 630 printf("notification absolute volume changed %d\n", avrcp_subevent_notification_volume_changed_get_absolute_volume(packet)); 631 return; 632 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 633 printf("notification changed\n"); 634 return; 635 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 636 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 637 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 638 printf("%s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 639 break; 640 } 641 case AVRCP_SUBEVENT_NOW_PLAYING_INFO:{ 642 uint8_t value[100]; 643 printf("now playing: \n"); 644 if (avrcp_subevent_now_playing_info_get_title_len(packet) > 0){ 645 memcpy(value, avrcp_subevent_now_playing_info_get_title(packet), avrcp_subevent_now_playing_info_get_title_len(packet)); 646 printf(" Title: %s\n", value); 647 } 648 if (avrcp_subevent_now_playing_info_get_album_len(packet) > 0){ 649 memcpy(value, avrcp_subevent_now_playing_info_get_album(packet), avrcp_subevent_now_playing_info_get_album_len(packet)); 650 printf(" Album: %s\n", value); 651 } 652 if (avrcp_subevent_now_playing_info_get_artist_len(packet) > 0){ 653 memcpy(value, avrcp_subevent_now_playing_info_get_artist(packet), avrcp_subevent_now_playing_info_get_artist_len(packet)); 654 printf(" Artist: %s\n", value); 655 } 656 if (avrcp_subevent_now_playing_info_get_genre_len(packet) > 0){ 657 memcpy(value, avrcp_subevent_now_playing_info_get_genre(packet), avrcp_subevent_now_playing_info_get_genre_len(packet)); 658 printf(" Genre: %s\n", value); 659 } 660 printf(" Track: %d\n", avrcp_subevent_now_playing_info_get_track(packet)); 661 printf(" Total nr. tracks: %d\n", avrcp_subevent_now_playing_info_get_total_tracks(packet)); 662 printf(" Song length: %d ms\n", avrcp_subevent_now_playing_info_get_song_length(packet)); 663 break; 664 } 665 case AVRCP_SUBEVENT_PLAY_STATUS: 666 printf("song length: %d ms, song position: %d ms, play status: %s\n", 667 avrcp_subevent_play_status_get_song_length(packet), 668 avrcp_subevent_play_status_get_song_position(packet), 669 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 670 break; 671 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 672 printf("operation done %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 673 break; 674 case AVRCP_SUBEVENT_OPERATION_START: 675 printf("operation start %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 676 break; 677 case AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE: 678 // response to set shuffle and repeat mode 679 printf("\n"); 680 break; 681 default: 682 printf("Not implemented\n"); 683 break; 684 } 685 } 686 687 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 688 UNUSED(channel); 689 UNUSED(size); 690 uint16_t cid; 691 692 switch (packet_type) { 693 case HCI_EVENT_PACKET: 694 switch (hci_event_packet_get_type(packet)) { 695 case HCI_EVENT_A2DP_META: 696 switch (packet[2]){ 697 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 698 printf(" received non SBC codec. not implemented\n"); 699 break; 700 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 701 sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 702 sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 703 sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 704 sbc_configuration.channel_mode = a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet); 705 sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 706 sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 707 sbc_configuration.allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 708 sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 709 sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 710 sbc_configuration.frames_per_buffer = sbc_configuration.subbands * sbc_configuration.block_length; 711 dump_sbc_configuration(sbc_configuration); 712 713 if (sbc_configuration.reconfigure){ 714 media_processing_close(); 715 } 716 717 // prepare media processing 718 media_processing_init(sbc_configuration); 719 break; 720 } 721 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 722 cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 723 if (cid != a2dp_cid) break; 724 local_seid = a2dp_subevent_stream_established_get_local_seid(packet); 725 printf(" -- a2dp sink demo: streaming connection is established, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 726 app_state = AVDTP_APPLICATION_STREAMING; 727 break; 728 729 case A2DP_SUBEVENT_STREAM_STARTED: 730 cid = a2dp_subevent_stream_started_get_a2dp_cid(packet); 731 if (cid != a2dp_cid) break; 732 local_seid = a2dp_subevent_stream_started_get_local_seid(packet); 733 printf(" -- a2dp sink demo: stream started, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 734 735 // started 736 // media_processing_init(sbc_configuration); 737 break; 738 739 case A2DP_SUBEVENT_STREAM_SUSPENDED: 740 cid = a2dp_subevent_stream_suspended_get_a2dp_cid(packet); 741 if (cid != a2dp_cid) break; 742 local_seid = a2dp_subevent_stream_suspended_get_local_seid(packet); 743 printf(" -- a2dp sink demo: stream paused, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 744 745 // paused/stopped 746 // media_processing_close(); 747 break; 748 749 case A2DP_SUBEVENT_STREAM_RELEASED: 750 cid = a2dp_subevent_stream_released_get_a2dp_cid(packet); 751 if (cid != a2dp_cid) break; 752 local_seid = a2dp_subevent_stream_released_get_local_seid(packet); 753 app_state = AVDTP_APPLICATION_IDLE; 754 printf(" -- a2dp sink demo: stream released, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 755 756 // paused/stopped 757 media_processing_close(); 758 break; 759 760 default: 761 printf(" not implemented\n"); 762 break; 763 } 764 break; 765 default: 766 break; 767 } 768 break; 769 default: 770 // other packet type 771 break; 772 } 773 } 774 775 #ifdef HAVE_BTSTACK_STDIN 776 static void show_usage(void){ 777 bd_addr_t iut_address; 778 gap_local_bd_addr(iut_address); 779 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 780 printf("b - AVDTP Sink create connection to addr %s\n", device_addr_string); 781 printf("B - AVDTP Sink disconnect\n"); 782 printf("c - AVRCP create connection to addr %s\n", device_addr_string); 783 printf("C - AVRCP disconnect\n"); 784 785 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 786 printf("O - get play status\n"); 787 printf("j - get now playing info\n"); 788 printf("k - play\n"); 789 printf("K - stop\n"); 790 printf("L - pause\n"); 791 printf("u - start fast forward\n"); 792 printf("U - stop fast forward\n"); 793 printf("n - start rewind\n"); 794 printf("N - stop rewind\n"); 795 printf("i - forward\n"); 796 printf("I - backward\n"); 797 printf("t - volume up\n"); 798 printf("T - volume down\n"); 799 printf("p - absolute volume of 50 percent\n"); 800 printf("M - mute\n"); 801 printf("r - skip\n"); 802 printf("q - query repeat and shuffle mode\n"); 803 printf("v - repeat single track\n"); 804 printf("x - repeat all tracks\n"); 805 printf("X - disable repeat mode\n"); 806 printf("z - shuffle all tracks\n"); 807 printf("Z - disable shuffle mode\n"); 808 809 printf("Ctrl-c - exit\n"); 810 printf("---\n"); 811 } 812 #endif 813 814 static uint8_t media_sbc_codec_capabilities[] = { 815 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 816 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 817 2, 53 818 }; 819 820 static uint8_t media_sbc_codec_configuration[] = { 821 (AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 822 (AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 823 2, 53 824 }; 825 826 #ifdef HAVE_BTSTACK_STDIN 827 static void stdin_process(char cmd){ 828 uint8_t status = ERROR_CODE_SUCCESS; 829 switch (cmd){ 830 case 'b': 831 printf(" - Create AVDTP connection to addr %s.\n", bd_addr_to_str(device_addr)); 832 status = a2dp_sink_establish_stream(device_addr, local_seid, &a2dp_cid); 833 break; 834 case 'B': 835 printf(" - Disconnect\n"); 836 status = avdtp_sink_disconnect(a2dp_cid); 837 break; 838 case 'c': 839 printf(" - Create AVRCP connection to addr %s.\n", bd_addr_to_str(device_addr)); 840 status = avrcp_controller_connect(device_addr, &avrcp_cid); 841 break; 842 case 'C': 843 printf(" - Disconnect\n"); 844 status = avrcp_controller_disconnect(avrcp_cid); 845 break; 846 847 case '\n': 848 case '\r': 849 break; 850 case 'O': 851 printf(" - get play status\n"); 852 status = avrcp_controller_get_play_status(avrcp_cid); 853 break; 854 case 'j': 855 printf(" - get now playing info\n"); 856 status = avrcp_controller_get_now_playing_info(avrcp_cid); 857 break; 858 case 'k': 859 printf(" - play\n"); 860 status = avrcp_controller_play(avrcp_cid); 861 break; 862 case 'K': 863 printf(" - stop\n"); 864 status = avrcp_controller_stop(avrcp_cid); 865 break; 866 case 'L': 867 printf(" - pause\n"); 868 status = avrcp_controller_pause(avrcp_cid); 869 break; 870 case 'u': 871 printf(" - start fast forward\n"); 872 status = avrcp_controller_start_fast_forward(avrcp_cid); 873 break; 874 case 'U': 875 printf(" - stop fast forward\n"); 876 status = avrcp_controller_stop_fast_forward(avrcp_cid); 877 break; 878 case 'n': 879 printf(" - start rewind\n"); 880 status = avrcp_controller_start_rewind(avrcp_cid); 881 break; 882 case 'N': 883 printf(" - stop rewind\n"); 884 status = avrcp_controller_stop_rewind(avrcp_cid); 885 break; 886 case 'i': 887 printf(" - forward\n"); 888 status = avrcp_controller_forward(avrcp_cid); 889 break; 890 case 'I': 891 printf(" - backward\n"); 892 status = avrcp_controller_backward(avrcp_cid); 893 break; 894 case 't': 895 printf(" - volume up\n"); 896 status = avrcp_controller_volume_up(avrcp_cid); 897 break; 898 case 'T': 899 printf(" - volume down\n"); 900 status = avrcp_controller_volume_down(avrcp_cid); 901 break; 902 case 'p': 903 printf(" - absolute volume of 50 percent\n"); 904 status = avrcp_controller_set_absolute_volume(avrcp_cid, 50); 905 break; 906 case 'M': 907 printf(" - mute\n"); 908 status = avrcp_controller_mute(avrcp_cid); 909 break; 910 case 'r': 911 printf(" - skip\n"); 912 status = avrcp_controller_skip(avrcp_cid); 913 break; 914 case 'q': 915 printf(" - query repeat and shuffle mode\n"); 916 status = avrcp_controller_query_shuffle_and_repeat_modes(avrcp_cid); 917 break; 918 case 'v': 919 printf(" - repeat single track\n"); 920 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 921 break; 922 case 'x': 923 printf(" - repeat all tracks\n"); 924 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 925 break; 926 case 'X': 927 printf(" - disable repeat mode\n"); 928 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_OFF); 929 break; 930 case 'z': 931 printf(" - shuffle all tracks\n"); 932 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 933 break; 934 case 'Z': 935 printf(" - disable shuffle mode\n"); 936 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_OFF); 937 break; 938 default: 939 show_usage(); 940 return; 941 } 942 if (status != ERROR_CODE_SUCCESS){ 943 printf("Could not perform command, status 0x%2x\n", status); 944 } 945 } 946 #endif 947 948 949 int btstack_main(int argc, const char * argv[]); 950 int btstack_main(int argc, const char * argv[]){ 951 952 UNUSED(argc); 953 (void)argv; 954 955 /* Register for HCI events */ 956 hci_event_callback_registration.callback = &packet_handler; 957 hci_add_event_handler(&hci_event_callback_registration); 958 959 l2cap_init(); 960 // Initialize AVDTP Sink 961 a2dp_sink_init(); 962 a2dp_sink_register_packet_handler(&packet_handler); 963 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 964 965 avdtp_stream_endpoint_t * local_stream_endpoint = 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)); 966 if (!local_stream_endpoint){ 967 printf("A2DP Sink: not enough memory to create local stream endpoint\n"); 968 return 1; 969 } 970 local_seid = avdtp_local_seid(local_stream_endpoint); 971 // Initialize AVRCP COntroller 972 avrcp_controller_init(); 973 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 974 975 // Initialize SDP 976 sdp_init(); 977 // setup AVDTP sink 978 memset(sdp_avdtp_sink_service_buffer, 0, sizeof(sdp_avdtp_sink_service_buffer)); 979 a2dp_sink_create_sdp_record(sdp_avdtp_sink_service_buffer, 0x10001, 1, NULL, NULL); 980 sdp_register_service(sdp_avdtp_sink_service_buffer); 981 982 // setup AVRCP 983 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 984 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10001, AVRCP_BROWSING_ENABLED, 1, NULL, NULL); 985 sdp_register_service(sdp_avrcp_controller_service_buffer); 986 987 988 gap_set_local_name("BTstack A2DP Sink Test"); 989 gap_discoverable_control(1); 990 gap_set_class_of_device(0x200408); 991 printf("sdp, gap done\n"); 992 993 // turn on! 994 hci_power_control(HCI_POWER_ON); 995 996 #ifdef HAVE_AUDIO_DMA 997 static btstack_data_source_t hal_audio_dma_data_source; 998 // set up polling data_source 999 btstack_run_loop_set_data_source_handler(&hal_audio_dma_data_source, &hal_audio_dma_process); 1000 btstack_run_loop_enable_data_source_callbacks(&hal_audio_dma_data_source, DATA_SOURCE_CALLBACK_POLL); 1001 btstack_run_loop_add_data_source(&hal_audio_dma_data_source); 1002 #endif 1003 1004 #ifdef HAVE_BTSTACK_STDIN 1005 // parse human readable Bluetooth address 1006 sscanf_bd_addr(device_addr_string, device_addr); 1007 btstack_stdin_setup(stdin_process); 1008 #endif 1009 1010 return 0; 1011 } 1012