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: 160 static const char * device_addr_string = "84:38:35:65:d1:15"; 161 // iPhone 5S: 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 uint16_t a2dp_cid = 0; 167 static uint8_t sdp_avdtp_sink_service_buffer[150]; 168 #ifdef HAVE_BTSTACK_STDIN 169 static avdtp_sep_t sep; 170 #endif 171 172 static avdtp_media_codec_configuration_sbc_t sbc_configuration; 173 174 static uint8_t local_seid = 0; 175 176 typedef enum { 177 AVDTP_APPLICATION_IDLE, 178 AVDTP_APPLICATION_CONNECTED, 179 AVDTP_APPLICATION_STREAMING 180 } avdtp_application_state_t; 181 182 avdtp_application_state_t app_state = AVDTP_APPLICATION_IDLE; 183 184 static btstack_packet_callback_registration_t hci_event_callback_registration; 185 186 static int media_initialized = 0; 187 188 #ifdef HAVE_BTSTACK_STDIN 189 static bd_addr_t device_addr; 190 #endif 191 192 static uint16_t avrcp_cid = 0; 193 static uint8_t sdp_avrcp_controller_service_buffer[200]; 194 195 #ifdef HAVE_PORTAUDIO 196 static int patestCallback( const void *inputBuffer, void *outputBuffer, 197 unsigned long framesPerBuffer, 198 const PaStreamCallbackTimeInfo* timeInfo, 199 PaStreamCallbackFlags statusFlags, 200 void *userData ) { 201 202 /** patestCallback is called from different thread, don't use hci_dump / log_info here without additional checks */ 203 204 (void) timeInfo; /* Prevent unused variable warnings. */ 205 (void) statusFlags; 206 (void) inputBuffer; 207 (void) userData; 208 209 int bytes_to_copy = framesPerBuffer * BYTES_PER_FRAME; 210 211 // fill with silence while paused 212 if (audio_stream_paused){ 213 214 if (btstack_ring_buffer_bytes_available(&ring_buffer) < PREBUFFER_BYTES){ 215 // printf("PA: silence\n"); 216 memset(outputBuffer, 0, bytes_to_copy); 217 return 0; 218 } else { 219 // resume playback 220 audio_stream_paused = 0; 221 } 222 } 223 224 // get data from ringbuffer 225 uint32_t bytes_read = 0; 226 btstack_ring_buffer_read(&ring_buffer, outputBuffer, bytes_to_copy, &bytes_read); 227 bytes_to_copy -= bytes_read; 228 229 // fill with 0 if not enough 230 if (bytes_to_copy){ 231 memset(outputBuffer + bytes_read, 0, bytes_to_copy); 232 audio_stream_paused = 1; 233 } 234 return 0; 235 } 236 #endif 237 238 #ifdef HAVE_AUDIO_DMA 239 static int next_buffer(int current){ 240 if (current == NUM_AUDIO_BUFFERS-1) return 0; 241 return current + 1; 242 } 243 static uint8_t * start_of_buffer(int num){ 244 return (uint8_t *) &audio_samples[num * DMA_AUDIO_FRAMES * 2]; 245 } 246 void hal_audio_dma_done(void){ 247 if (audio_stream_paused){ 248 hal_audio_dma_play((const uint8_t *) silent_buffer, DMA_AUDIO_FRAMES*4); 249 return; 250 } 251 // next buffer 252 int next_playback_buffer = next_buffer(playback_buffer); 253 uint8_t * playback_data; 254 if (next_playback_buffer == write_buffer){ 255 256 // TODO: stop codec while playing silence when getting 'stream paused' 257 258 // start playing silence 259 audio_stream_paused = 1; 260 hal_audio_dma_play((const uint8_t *) silent_buffer, DMA_AUDIO_FRAMES*4); 261 printf("%6u - paused - bytes in buffer %u\n", (int) btstack_run_loop_get_time_ms(), btstack_ring_buffer_bytes_available(&ring_buffer)); 262 return; 263 } 264 playback_buffer = next_playback_buffer; 265 playback_data = start_of_buffer(playback_buffer); 266 hal_audio_dma_play(playback_data, audio_samples_len[playback_buffer]); 267 // btstack_run_loop_embedded_trigger(); 268 } 269 #endif 270 271 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 272 273 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context){ 274 UNUSED(sample_rate); 275 UNUSED(context); 276 277 #ifdef STORE_SBC_TO_WAV_FILE 278 wav_writer_write_int16(num_samples*num_channels, data); 279 frame_count++; 280 #endif 281 282 #ifdef HAVE_PORTAUDIO 283 total_num_samples+=num_samples*num_channels; 284 285 // store pcm samples in ringbuffer 286 btstack_ring_buffer_write(&ring_buffer, (uint8_t *)data, num_samples*num_channels*2); 287 288 if (!audio_stream_started){ 289 audio_stream_paused = 1; 290 /* -- start stream -- */ 291 PaError err = Pa_StartStream(stream); 292 if (err != paNoError){ 293 printf("Error starting the stream: \"%s\"\n", Pa_GetErrorText(err)); 294 return; 295 } 296 audio_stream_started = 1; 297 } 298 #endif 299 300 } 301 #endif 302 303 304 #ifdef HAVE_AUDIO_DMA 305 306 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context){ 307 UNUSED(sample_rate); 308 UNUSED(context); 309 total_num_samples+=num_samples*num_channels; 310 311 // store in ring buffer 312 uint8_t * write_data = start_of_buffer(write_buffer); 313 uint16_t len = num_samples*num_channels*2; 314 memcpy(write_data, data, len); 315 audio_samples_len[write_buffer] = len; 316 317 // add/drop audio frame to fix drift 318 if (sbc_samples_fix > 0){ 319 memcpy(write_data + len, write_data + len - 4, 4); 320 audio_samples_len[write_buffer] += 4; 321 } 322 if (sbc_samples_fix < 0){ 323 audio_samples_len[write_buffer] -= 4; 324 } 325 326 write_buffer = next_buffer(write_buffer); 327 } 328 329 static void hal_audio_dma_process(btstack_data_source_t * ds, btstack_data_source_callback_type_t callback_type){ 330 UNUSED(ds); 331 UNUSED(callback_type); 332 333 if (!media_initialized) return; 334 335 int trigger_resume = 0; 336 if (audio_stream_paused) { 337 if (sbc_frame_size && btstack_ring_buffer_bytes_available(&ring_buffer) >= OPTIMAL_FRAMES_MIN * sbc_frame_size){ 338 trigger_resume = 1; 339 // reset buffers 340 playback_buffer = NUM_AUDIO_BUFFERS - 1; 341 write_buffer = 0; 342 } else { 343 return; 344 } 345 } 346 347 while (playback_buffer != write_buffer && btstack_ring_buffer_bytes_available(&ring_buffer) >= sbc_frame_size ){ 348 uint8_t frame[MAX_SBC_FRAME_SIZE]; 349 uint32_t bytes_read = 0; 350 btstack_ring_buffer_read(&ring_buffer, frame, sbc_frame_size, &bytes_read); 351 btstack_sbc_decoder_process_data(&state, 0, frame, sbc_frame_size); 352 } 353 354 if (trigger_resume){ 355 printf("%6u - resume\n", (int) btstack_run_loop_get_time_ms()); 356 audio_stream_paused = 0; 357 } 358 } 359 360 #endif 361 362 static int media_processing_init(avdtp_media_codec_configuration_sbc_t configuration){ 363 364 if (media_initialized) return 0; 365 366 #ifdef DECODE_SBC 367 btstack_sbc_decoder_init(&state, mode, handle_pcm_data, NULL); 368 #endif 369 370 #ifdef STORE_SBC_TO_WAV_FILE 371 wav_writer_open(wav_filename, configuration.num_channels, configuration.sampling_frequency); 372 #endif 373 374 #ifdef STORE_SBC_TO_SBC_FILE 375 sbc_file = fopen(sbc_filename, "wb"); 376 #endif 377 378 #ifdef HAVE_PORTAUDIO 379 // int frames_per_buffer = configuration.frames_per_buffer; 380 PaError err; 381 PaStreamParameters outputParameters; 382 const PaDeviceInfo *deviceInfo; 383 384 /* -- initialize PortAudio -- */ 385 err = Pa_Initialize(); 386 if (err != paNoError){ 387 printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err)); 388 return err; 389 } 390 /* -- setup input and output -- */ 391 outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */ 392 outputParameters.channelCount = configuration.num_channels; 393 outputParameters.sampleFormat = PA_SAMPLE_TYPE; 394 outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency; 395 outputParameters.hostApiSpecificStreamInfo = NULL; 396 deviceInfo = Pa_GetDeviceInfo( outputParameters.device ); 397 printf("PortAudio: Output device: %s\n", deviceInfo->name); 398 log_info("PortAudio: Output device: %s", deviceInfo->name); 399 /* -- setup stream -- */ 400 err = Pa_OpenStream( 401 &stream, 402 NULL, /* &inputParameters */ 403 &outputParameters, 404 configuration.sampling_frequency, 405 0, 406 paClipOff, /* we won't output out of range samples so don't bother clipping them */ 407 patestCallback, /* use callback */ 408 NULL ); 409 410 if (err != paNoError){ 411 printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err)); 412 return err; 413 } 414 log_info("PortAudio: stream opened"); 415 printf("PortAudio: stream opened\n"); 416 #endif 417 #ifdef HAVE_AUDIO_DMA 418 audio_stream_paused = 1; 419 hal_audio_dma_init(configuration.sampling_frequency); 420 hal_audio_dma_set_audio_played(&hal_audio_dma_done); 421 // start playing silence 422 hal_audio_dma_done(); 423 #endif 424 425 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 426 memset(ring_buffer_storage, 0, sizeof(ring_buffer_storage)); 427 btstack_ring_buffer_init(&ring_buffer, ring_buffer_storage, sizeof(ring_buffer_storage)); 428 audio_stream_started = 0; 429 #endif 430 media_initialized = 1; 431 return 0; 432 } 433 434 static void media_processing_close(void){ 435 if (!media_initialized) return; 436 media_initialized = 0; 437 438 #ifdef STORE_SBC_TO_WAV_FILE 439 printf("WAV Writer: close file.\n"); 440 wav_writer_close(); 441 int total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 442 443 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); 444 printf("WAV Writer: Written %d frames to wav file: %s\n", frame_count, wav_filename); 445 #endif 446 447 #ifdef STORE_SBC_TO_SBC_FILE 448 fclose(sbc_file); 449 #endif 450 451 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 452 audio_stream_started = 0; 453 #endif 454 455 #ifdef HAVE_PORTAUDIO 456 printf("PortAudio: Steram closed\n"); 457 log_info("PortAudio: Stream closed"); 458 459 PaError err = Pa_StopStream(stream); 460 if (err != paNoError){ 461 printf("Error stopping the stream: \"%s\"\n", Pa_GetErrorText(err)); 462 log_error("Error stopping the stream: \"%s\"", Pa_GetErrorText(err)); 463 return; 464 } 465 err = Pa_CloseStream(stream); 466 if (err != paNoError){ 467 printf("Error closing the stream: \"%s\"\n", Pa_GetErrorText(err)); 468 log_error("Error closing the stream: \"%s\"", Pa_GetErrorText(err)); 469 return; 470 } 471 err = Pa_Terminate(); 472 if (err != paNoError){ 473 printf("Error terminating portaudio: \"%s\"\n", Pa_GetErrorText(err)); 474 log_error("Error terminating portaudio: \"%s\"", Pa_GetErrorText(err)); 475 return; 476 } 477 #endif 478 479 #ifdef HAVE_AUDIO_DMA 480 hal_audio_dma_close(); 481 #endif 482 } 483 484 static void handle_l2cap_media_data_packet(avdtp_stream_endpoint_t * stream_endpoint, uint8_t *packet, uint16_t size){ 485 486 UNUSED(stream_endpoint); 487 488 int pos = 0; 489 490 avdtp_media_packet_header_t media_header; 491 media_header.version = packet[pos] & 0x03; 492 media_header.padding = get_bit16(packet[pos],2); 493 media_header.extension = get_bit16(packet[pos],3); 494 media_header.csrc_count = (packet[pos] >> 4) & 0x0F; 495 496 pos++; 497 498 media_header.marker = get_bit16(packet[pos],0); 499 media_header.payload_type = (packet[pos] >> 1) & 0x7F; 500 pos++; 501 502 media_header.sequence_number = big_endian_read_16(packet, pos); 503 pos+=2; 504 505 media_header.timestamp = big_endian_read_32(packet, pos); 506 pos+=4; 507 508 media_header.synchronization_source = big_endian_read_32(packet, pos); 509 pos+=4; 510 511 UNUSED(media_header); 512 513 // TODO: read csrc list 514 515 // printf_hexdump( packet, pos ); 516 // printf("MEDIA HEADER: %u timestamp, version %u, padding %u, extension %u, csrc_count %u\n", 517 // media_header.timestamp, media_header.version, media_header.padding, media_header.extension, media_header.csrc_count); 518 // printf("MEDIA HEADER: marker %02x, payload_type %02x, sequence_number %u, synchronization_source %u\n", 519 // media_header.marker, media_header.payload_type, media_header.sequence_number, media_header.synchronization_source); 520 521 avdtp_sbc_codec_header_t sbc_header; 522 sbc_header.fragmentation = get_bit16(packet[pos], 7); 523 sbc_header.starting_packet = get_bit16(packet[pos], 6); 524 sbc_header.last_packet = get_bit16(packet[pos], 5); 525 sbc_header.num_frames = packet[pos] & 0x0f; 526 pos++; 527 528 #ifdef HAVE_AUDIO_DMA 529 // store sbc frame size for buffer management 530 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 531 #endif 532 533 UNUSED(sbc_header); 534 // 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); 535 // printf_hexdump( packet+pos, size-pos ); 536 537 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 538 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 539 #endif 540 541 #ifdef HAVE_AUDIO_DMA 542 btstack_ring_buffer_write(&ring_buffer, packet+pos, size-pos); 543 544 // decide on audio sync drift based on number of sbc frames in queue 545 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&ring_buffer) / sbc_frame_size; 546 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 547 sbc_samples_fix = 1; // duplicate last sample 548 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 549 sbc_samples_fix = 0; // nothing to do 550 } else { 551 sbc_samples_fix = -1; // drop last sample 552 } 553 554 // dump 555 printf("%6u %03u %d\n", (int) btstack_run_loop_get_time_ms(), sbc_frames_in_buffer, sbc_samples_fix); 556 557 #endif 558 559 #ifdef STORE_SBC_TO_SBC_FILE 560 fwrite(packet+pos, size-pos, 1, sbc_file); 561 #endif 562 } 563 564 static void dump_sbc_configuration(avdtp_media_codec_configuration_sbc_t configuration){ 565 printf(" -- a2dp sink demo: Received media codec configuration:\n"); 566 printf(" - num_channels: %d\n", configuration.num_channels); 567 printf(" - sampling_frequency: %d\n", configuration.sampling_frequency); 568 printf(" - channel_mode: %d\n", configuration.channel_mode); 569 printf(" - block_length: %d\n", configuration.block_length); 570 printf(" - subbands: %d\n", configuration.subbands); 571 printf(" - allocation_method: %d\n", configuration.allocation_method); 572 printf(" - bitpool_value [%d, %d] \n", configuration.min_bitpool_value, configuration.max_bitpool_value); 573 printf("\n"); 574 } 575 576 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 577 UNUSED(channel); 578 UNUSED(size); 579 bd_addr_t event_addr; 580 uint16_t local_cid; 581 uint8_t status = 0xFF; 582 583 if (packet_type != HCI_EVENT_PACKET) return; 584 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 585 switch (packet[2]){ 586 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 587 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 588 if (avrcp_cid != 0 && avrcp_cid != local_cid) { 589 printf("AVRCP Connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", avrcp_cid, local_cid); 590 return; 591 } 592 593 status = avrcp_subevent_connection_established_get_status(packet); 594 if (status != ERROR_CODE_SUCCESS){ 595 printf("AVRCP Connection failed: status 0x%02x\n", status); 596 avrcp_cid = 0; 597 return; 598 } 599 600 avrcp_cid = local_cid; 601 avrcp_subevent_connection_established_get_bd_addr(packet, event_addr); 602 printf("Channel successfully opened: %s, avrcp_cid 0x%02x\n", bd_addr_to_str(event_addr), avrcp_cid); 603 604 // automatically enable notifications 605 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 606 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 607 return; 608 } 609 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 610 printf("Channel released: avrcp_cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 611 avrcp_cid = 0; 612 return; 613 default: 614 break; 615 } 616 617 status = packet[5]; 618 if (!avrcp_cid) return; 619 620 // avoid printing INTERIM status 621 if (status == AVRCP_CTYPE_RESPONSE_INTERIM) return; 622 623 printf("AVRCP: command status: %s, ", avrcp_ctype2str(status)); 624 switch (packet[2]){ 625 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED: 626 printf("notification, playback status changed %s\n", avrcp_play_status2str(avrcp_subevent_notification_playback_status_changed_get_play_status(packet))); 627 return; 628 case AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED: 629 printf("notification, playing content changed\n"); 630 return; 631 case AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED: 632 printf("notification track changed\n"); 633 return; 634 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 635 printf("notification absolute volume changed %d\n", avrcp_subevent_notification_volume_changed_get_absolute_volume(packet)); 636 return; 637 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 638 printf("notification changed\n"); 639 return; 640 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 641 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 642 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 643 printf("%s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 644 break; 645 } 646 case AVRCP_SUBEVENT_NOW_PLAYING_INFO:{ 647 uint8_t value[100]; 648 printf("now playing: \n"); 649 if (avrcp_subevent_now_playing_info_get_title_len(packet) > 0){ 650 memcpy(value, avrcp_subevent_now_playing_info_get_title(packet), avrcp_subevent_now_playing_info_get_title_len(packet)); 651 printf(" Title: %s\n", value); 652 } 653 if (avrcp_subevent_now_playing_info_get_album_len(packet) > 0){ 654 memcpy(value, avrcp_subevent_now_playing_info_get_album(packet), avrcp_subevent_now_playing_info_get_album_len(packet)); 655 printf(" Album: %s\n", value); 656 } 657 if (avrcp_subevent_now_playing_info_get_artist_len(packet) > 0){ 658 memcpy(value, avrcp_subevent_now_playing_info_get_artist(packet), avrcp_subevent_now_playing_info_get_artist_len(packet)); 659 printf(" Artist: %s\n", value); 660 } 661 if (avrcp_subevent_now_playing_info_get_genre_len(packet) > 0){ 662 memcpy(value, avrcp_subevent_now_playing_info_get_genre(packet), avrcp_subevent_now_playing_info_get_genre_len(packet)); 663 printf(" Genre: %s\n", value); 664 } 665 printf(" Track: %d\n", avrcp_subevent_now_playing_info_get_track(packet)); 666 printf(" Total nr. tracks: %d\n", avrcp_subevent_now_playing_info_get_total_tracks(packet)); 667 printf(" Song length: %d ms\n", avrcp_subevent_now_playing_info_get_song_length(packet)); 668 break; 669 } 670 case AVRCP_SUBEVENT_PLAY_STATUS: 671 printf("song length: %d ms, song position: %d ms, play status: %s\n", 672 avrcp_subevent_play_status_get_song_length(packet), 673 avrcp_subevent_play_status_get_song_position(packet), 674 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 675 break; 676 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 677 printf("operation done %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 678 break; 679 case AVRCP_SUBEVENT_OPERATION_START: 680 printf("operation start %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 681 break; 682 case AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE: 683 // response to set shuffle and repeat mode 684 printf("\n"); 685 break; 686 default: 687 printf("Not implemented\n"); 688 break; 689 } 690 } 691 692 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 693 UNUSED(channel); 694 UNUSED(size); 695 uint16_t cid; 696 697 switch (packet_type) { 698 case HCI_EVENT_PACKET: 699 switch (hci_event_packet_get_type(packet)) { 700 case HCI_EVENT_A2DP_META: 701 switch (packet[2]){ 702 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 703 printf(" received non SBC codec. not implemented\n"); 704 break; 705 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 706 sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 707 sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 708 sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 709 sbc_configuration.channel_mode = a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet); 710 sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 711 sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 712 sbc_configuration.allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 713 sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 714 sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 715 sbc_configuration.frames_per_buffer = sbc_configuration.subbands * sbc_configuration.block_length; 716 dump_sbc_configuration(sbc_configuration); 717 718 if (sbc_configuration.reconfigure){ 719 media_processing_close(); 720 } 721 722 // prepare media processing 723 media_processing_init(sbc_configuration); 724 break; 725 } 726 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 727 cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 728 if (cid != a2dp_cid) break; 729 local_seid = a2dp_subevent_stream_established_get_local_seid(packet); 730 printf(" -- a2dp sink demo: streaming connection is established, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 731 app_state = AVDTP_APPLICATION_STREAMING; 732 break; 733 734 case A2DP_SUBEVENT_STREAM_STARTED: 735 cid = a2dp_subevent_stream_started_get_a2dp_cid(packet); 736 if (cid != a2dp_cid) break; 737 local_seid = a2dp_subevent_stream_started_get_local_seid(packet); 738 printf(" -- a2dp sink demo: stream started, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 739 740 // started 741 // media_processing_init(sbc_configuration); 742 break; 743 744 case A2DP_SUBEVENT_STREAM_SUSPENDED: 745 cid = a2dp_subevent_stream_suspended_get_a2dp_cid(packet); 746 if (cid != a2dp_cid) break; 747 local_seid = a2dp_subevent_stream_suspended_get_local_seid(packet); 748 printf(" -- a2dp sink demo: stream paused, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 749 750 // paused/stopped 751 // media_processing_close(); 752 break; 753 754 case A2DP_SUBEVENT_STREAM_RELEASED: 755 cid = a2dp_subevent_stream_released_get_a2dp_cid(packet); 756 if (cid != a2dp_cid) break; 757 local_seid = a2dp_subevent_stream_released_get_local_seid(packet); 758 app_state = AVDTP_APPLICATION_IDLE; 759 printf(" -- a2dp sink demo: stream released, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 760 761 // paused/stopped 762 media_processing_close(); 763 break; 764 765 default: 766 printf(" not implemented\n"); 767 break; 768 } 769 break; 770 default: 771 break; 772 } 773 break; 774 default: 775 // other packet type 776 break; 777 } 778 } 779 780 #ifdef HAVE_BTSTACK_STDIN 781 static void show_usage(void){ 782 bd_addr_t iut_address; 783 gap_local_bd_addr(iut_address); 784 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 785 printf("b - AVDTP Sink create connection to addr %s\n", device_addr_string); 786 printf("B - AVDTP Sink disconnect\n"); 787 printf("c - AVRCP create connection to addr %s\n", device_addr_string); 788 printf("C - AVRCP disconnect\n"); 789 790 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 791 printf("O - get play status\n"); 792 printf("j - get now playing info\n"); 793 printf("k - play\n"); 794 printf("K - stop\n"); 795 printf("L - pause\n"); 796 printf("u - start fast forward\n"); 797 printf("U - stop fast forward\n"); 798 printf("n - start rewind\n"); 799 printf("N - stop rewind\n"); 800 printf("i - forward\n"); 801 printf("I - backward\n"); 802 printf("t - volume up\n"); 803 printf("T - volume down\n"); 804 printf("p - absolute volume of 50 percent\n"); 805 printf("M - mute\n"); 806 printf("r - skip\n"); 807 printf("q - query repeat and shuffle mode\n"); 808 printf("v - repeat single track\n"); 809 printf("x - repeat all tracks\n"); 810 printf("X - disable repeat mode\n"); 811 printf("z - shuffle all tracks\n"); 812 printf("Z - disable shuffle mode\n"); 813 814 printf("Ctrl-c - exit\n"); 815 printf("---\n"); 816 } 817 #endif 818 819 static uint8_t media_sbc_codec_capabilities[] = { 820 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 821 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 822 2, 53 823 }; 824 825 static uint8_t media_sbc_codec_configuration[] = { 826 (AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 827 (AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 828 2, 53 829 }; 830 831 #ifdef HAVE_BTSTACK_STDIN 832 static void stdin_process(char cmd){ 833 sep.seid = 1; 834 switch (cmd){ 835 case 'b': 836 printf(" - Create AVDTP connection to addr %s.\n", bd_addr_to_str(device_addr)); 837 a2dp_sink_establish_stream(device_addr, local_seid, &a2dp_cid); 838 break; 839 case 'B': 840 printf(" - Disconnect\n"); 841 avdtp_sink_disconnect(a2dp_cid); 842 break; 843 case 'c': 844 printf(" - Create AVRCP connection to addr %s.\n", bd_addr_to_str(device_addr)); 845 avrcp_controller_connect(device_addr, &avrcp_cid); 846 printf(" assigned avrcp cid 0x%02x\n", avrcp_cid); 847 break; 848 case 'C': 849 printf(" - Disconnect\n"); 850 avrcp_controller_disconnect(avrcp_cid); 851 break; 852 853 case '\n': 854 case '\r': 855 break; 856 case 'O': 857 printf(" - get play status\n"); 858 avrcp_controller_get_play_status(avrcp_cid); 859 break; 860 case 'j': 861 printf(" - get now playing info\n"); 862 avrcp_controller_get_now_playing_info(avrcp_cid); 863 break; 864 case 'k': 865 printf(" - play\n"); 866 avrcp_controller_play(avrcp_cid); 867 break; 868 case 'K': 869 printf(" - stop\n"); 870 avrcp_controller_stop(avrcp_cid); 871 break; 872 case 'L': 873 printf(" - pause\n"); 874 avrcp_controller_pause(avrcp_cid); 875 break; 876 case 'u': 877 printf(" - start fast forward\n"); 878 avrcp_controller_start_fast_forward(avrcp_cid); 879 break; 880 case 'U': 881 printf(" - stop fast forward\n"); 882 avrcp_controller_stop_fast_forward(avrcp_cid); 883 break; 884 case 'n': 885 printf(" - start rewind\n"); 886 avrcp_controller_start_rewind(avrcp_cid); 887 break; 888 case 'N': 889 printf(" - stop rewind\n"); 890 avrcp_controller_stop_rewind(avrcp_cid); 891 break; 892 case 'i': 893 printf(" - forward\n"); 894 avrcp_controller_forward(avrcp_cid); 895 break; 896 case 'I': 897 printf(" - backward\n"); 898 avrcp_controller_backward(avrcp_cid); 899 break; 900 case 't': 901 printf(" - volume up\n"); 902 avrcp_controller_volume_up(avrcp_cid); 903 break; 904 case 'T': 905 printf(" - volume down\n"); 906 avrcp_controller_volume_down(avrcp_cid); 907 break; 908 case 'p': 909 printf(" - absolute volume of 50 percent\n"); 910 avrcp_controller_set_absolute_volume(avrcp_cid, 50); 911 break; 912 case 'M': 913 printf(" - mute\n"); 914 avrcp_controller_mute(avrcp_cid); 915 break; 916 case 'r': 917 printf(" - skip\n"); 918 avrcp_controller_skip(avrcp_cid); 919 break; 920 case 'q': 921 printf(" - query repeat and shuffle mode\n"); 922 avrcp_controller_query_shuffle_and_repeat_modes(avrcp_cid); 923 break; 924 case 'v': 925 printf(" - repeat single track\n"); 926 avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 927 break; 928 case 'x': 929 printf(" - repeat all tracks\n"); 930 avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 931 break; 932 case 'X': 933 printf(" - disable repeat mode\n"); 934 avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_OFF); 935 break; 936 case 'z': 937 printf(" - shuffle all tracks\n"); 938 avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 939 break; 940 case 'Z': 941 printf(" - disable shuffle mode\n"); 942 avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_OFF); 943 break; 944 default: 945 show_usage(); 946 break; 947 948 } 949 } 950 #endif 951 952 953 int btstack_main(int argc, const char * argv[]); 954 int btstack_main(int argc, const char * argv[]){ 955 956 UNUSED(argc); 957 (void)argv; 958 959 /* Register for HCI events */ 960 hci_event_callback_registration.callback = &packet_handler; 961 hci_add_event_handler(&hci_event_callback_registration); 962 963 l2cap_init(); 964 // Initialize AVDTP Sink 965 a2dp_sink_init(); 966 a2dp_sink_register_packet_handler(&packet_handler); 967 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 968 969 local_seid = 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)); 970 971 // 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