1 /* 2 * Copyright (C) 2016 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define __BTSTACK_FILE__ "a2dp_sink_demo.c" 39 40 /* 41 * a2dp_sink_demo.c 42 */ 43 44 // ***************************************************************************** 45 /* EXAMPLE_START(a2dp_sink_demo): Receive audio and control playback. 46 * 47 * @text This A2DP Sink example demonstrates how to use the A2DP Sink service to 48 * receive an audio data stream from a remote A2DP Source device. In addition, 49 * the AVRCP Controller is used to get information on currently played media, 50 * such are title, artist and album, as well as to control the playback, 51 * i.e. to play, stop, repeat, etc. 52 */ 53 // ***************************************************************************** 54 55 #include <stdint.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <string.h> 59 60 #include "btstack.h" 61 62 #define AVRCP_BROWSING_ENABLED 0 63 64 #ifdef HAVE_BTSTACK_STDIN 65 #include "btstack_stdin.h" 66 #endif 67 68 #ifdef HAVE_AUDIO_DMA 69 #include "btstack_ring_buffer.h" 70 #include "hal_audio_dma.h" 71 #endif 72 73 #ifdef HAVE_PORTAUDIO 74 #include "btstack_ring_buffer.h" 75 #include <portaudio.h> 76 #endif 77 78 #ifdef HAVE_POSIX_FILE_IO 79 #include "wav_util.h" 80 #define STORE_SBC_TO_SBC_FILE 81 #define STORE_SBC_TO_WAV_FILE 82 #endif 83 84 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) || defined(HAVE_AUDIO_DMA) 85 #define DECODE_SBC 86 #endif 87 88 #define NUM_CHANNELS 2 89 #define BYTES_PER_FRAME (2*NUM_CHANNELS) 90 #define MAX_SBC_FRAME_SIZE 120 91 92 // SBC Decoder for WAV file or PortAudio 93 #ifdef DECODE_SBC 94 static btstack_sbc_decoder_state_t state; 95 static btstack_sbc_mode_t mode = SBC_MODE_STANDARD; 96 #endif 97 98 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 99 #define PREBUFFER_MS 200 100 static int audio_stream_started = 0; 101 static int audio_stream_paused = 0; 102 static btstack_ring_buffer_t ring_buffer; 103 #endif 104 105 #ifdef HAVE_AUDIO_DMA 106 // below 30: add samples, 30-40: fine, above 40: drop samples 107 #define OPTIMAL_FRAMES_MIN 30 108 #define OPTIMAL_FRAMES_MAX 40 109 #define ADDITIONAL_FRAMES 10 110 #define DMA_AUDIO_FRAMES 128 111 #define DMA_MAX_FILL_FRAMES 1 112 #define NUM_AUDIO_BUFFERS 2 113 114 static uint16_t audio_samples[(DMA_AUDIO_FRAMES + DMA_MAX_FILL_FRAMES)*2*NUM_AUDIO_BUFFERS]; 115 static uint16_t audio_samples_len[NUM_AUDIO_BUFFERS]; 116 static uint8_t ring_buffer_storage[(OPTIMAL_FRAMES_MAX + ADDITIONAL_FRAMES) * MAX_SBC_FRAME_SIZE]; 117 static const uint16_t silent_buffer[DMA_AUDIO_FRAMES*2]; 118 static volatile int playback_buffer; 119 static int write_buffer; 120 static uint8_t sbc_frame_size; 121 static int sbc_samples_fix; 122 #endif 123 124 // PortAdudio - live playback 125 #ifdef HAVE_PORTAUDIO 126 #define PA_SAMPLE_TYPE paInt16 127 #define SAMPLE_RATE 48000 128 #define FRAMES_PER_BUFFER 128 129 #define PREBUFFER_BYTES (PREBUFFER_MS*SAMPLE_RATE/1000*BYTES_PER_FRAME) 130 static PaStream * stream; 131 static uint8_t ring_buffer_storage[2*PREBUFFER_BYTES]; 132 #endif 133 134 // WAV File 135 #ifdef STORE_SBC_TO_WAV_FILE 136 static int frame_count = 0; 137 static char * wav_filename = "avdtp_sink.wav"; 138 #endif 139 140 #ifdef STORE_SBC_TO_SBC_FILE 141 static FILE * sbc_file; 142 static char * sbc_filename = "avdtp_sink.sbc"; 143 #endif 144 145 typedef struct { 146 // bitmaps 147 uint8_t sampling_frequency_bitmap; 148 uint8_t channel_mode_bitmap; 149 uint8_t block_length_bitmap; 150 uint8_t subbands_bitmap; 151 uint8_t allocation_method_bitmap; 152 uint8_t min_bitpool_value; 153 uint8_t max_bitpool_value; 154 } adtvp_media_codec_information_sbc_t; 155 156 typedef struct { 157 int reconfigure; 158 int num_channels; 159 int sampling_frequency; 160 int channel_mode; 161 int block_length; 162 int subbands; 163 int allocation_method; 164 int min_bitpool_value; 165 int max_bitpool_value; 166 int frames_per_buffer; 167 } avdtp_media_codec_configuration_sbc_t; 168 169 #ifdef HAVE_BTSTACK_STDIN 170 // mac 2011: static bd_addr_t remote = {0x04, 0x0C, 0xCE, 0xE4, 0x85, 0xD3}; 171 // pts: static bd_addr_t remote = {0x00, 0x1B, 0xDC, 0x08, 0x0A, 0xA5}; 172 // mac 2013: 173 // mac 2013: static const char * device_addr_string = "84:38:35:65:d1:15"; 174 // iPhone 5S: 175 static const char * device_addr_string = "54:E4:3A:26:A2:39"; 176 #endif 177 178 // bt dongle: -u 02-02 static bd_addr_t remote = {0x00, 0x02, 0x72, 0xDC, 0x31, 0xC1}; 179 180 static uint8_t sdp_avdtp_sink_service_buffer[150]; 181 static avdtp_media_codec_configuration_sbc_t sbc_configuration; 182 static uint16_t a2dp_cid = 0; 183 static uint8_t local_seid = 0; 184 static uint8_t value[100]; 185 186 static btstack_packet_callback_registration_t hci_event_callback_registration; 187 188 static int media_initialized = 0; 189 190 #ifdef HAVE_BTSTACK_STDIN 191 static bd_addr_t device_addr; 192 #endif 193 194 static uint16_t a2dp_sink_connected = 0; 195 static uint16_t avrcp_cid = 0; 196 static uint8_t avrcp_connected = 0; 197 static uint8_t sdp_avrcp_controller_service_buffer[200]; 198 199 static uint8_t media_sbc_codec_capabilities[] = { 200 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 201 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 202 2, 53 203 }; 204 205 static uint8_t media_sbc_codec_configuration[] = { 206 (AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 207 (AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 208 2, 53 209 }; 210 211 212 /* @section Main Application Setup 213 * 214 * @text The Listing MainConfiguration shows how to setup AD2P Sink and AVRCP controller services. 215 * To announce A2DP Sink and AVRCP Controller services, you need to create corresponding 216 * SDP records and register them with the SDP service. 217 * You'll also need to register several packet handlers: 218 * - a2dp_sink_packet_handler - handles events on stream connection status (established, released), the media codec configuration, and, the status of the stream itself (opened, paused, stopped). 219 * - handle_l2cap_media_data_packet - used to receive streaming data. If HAVE_PORTAUDIO or STORE_SBC_TO_WAV_FILE directives (check btstack_config.h) are used, the SBC decoder will be used to decode the SBC data into PCM frames. The resulting PCM frames are then processed in the SBC Decoder callback. 220 * - stdin_process callback - used to trigger AVRCP commands to the A2DP Source device, such are get now playing info, start, stop, volume control. Requires HAVE_BTSTACK_STDIN. 221 * - avrcp_controller_packet_handler - used to receive answers for AVRCP commands, 222 * 223 * @text Note, currently only the SBC codec is supported. 224 * If you want to store the audio data in a file, you'll need to define STORE_SBC_TO_WAV_FILE. The HAVE_PORTAUDIO directive indicates if the audio is played back via PortAudio. 225 * If HAVE_PORTAUDIO or STORE_SBC_TO_WAV_FILE directives is defined, the SBC decoder needs to get initialized when a2dp_sink_packet_handler receives event A2DP_SUBEVENT_STREAM_STARTED. 226 * The initialization of the SBC decoder requires a callback that handles PCM data: 227 * - handle_pcm_data - handles PCM audio frames. Here, they are stored a in wav file if STORE_SBC_TO_WAV_FILE is defined, and/or played using the PortAudio library if HAVE_PORTAUDIO is defined. 228 */ 229 230 /* LISTING_START(MainConfiguration): Setup Audio Sink and AVRCP services */ 231 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size); 232 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 233 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size); 234 #ifdef HAVE_BTSTACK_STDIN 235 static void stdin_process(char cmd); 236 #endif 237 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 238 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context); 239 #endif 240 241 static int a2dp_sink_and_avrcp_services_init(void){ 242 // Register for HCI events. 243 hci_event_callback_registration.callback = &a2dp_sink_packet_handler; 244 hci_add_event_handler(&hci_event_callback_registration); 245 246 // Initialize L2CAP. 247 l2cap_init(); 248 249 // Initialize A2DP Sink. 250 a2dp_sink_init(); 251 // Register A2DP Sink for HCI events. 252 a2dp_sink_register_packet_handler(&a2dp_sink_packet_handler); 253 // Register A2DP Sink for receiving media data. 254 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 255 // Create a stream endpoint to which the streaming channel will be opened. 256 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); 257 if (status != ERROR_CODE_SUCCESS){ 258 printf("A2DP Sink: not enough memory to create local stream endpoint\n"); 259 return 1; 260 } 261 262 // Initialize AVRCP Controller. 263 avrcp_controller_init(); 264 // Register AVRCP for HCI events. 265 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 266 267 // Initialize SDP. 268 sdp_init(); 269 270 // Create A2DP sink service record and register it with SDP. 271 memset(sdp_avdtp_sink_service_buffer, 0, sizeof(sdp_avdtp_sink_service_buffer)); 272 a2dp_sink_create_sdp_record(sdp_avdtp_sink_service_buffer, 0x10001, 1, NULL, NULL); 273 sdp_register_service(sdp_avdtp_sink_service_buffer); 274 275 // Create AVRCP service record and register it with SDP. 276 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 277 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10001, AVRCP_BROWSING_ENABLED, 1, NULL, NULL); 278 sdp_register_service(sdp_avrcp_controller_service_buffer); 279 280 // Set local name with a template Bluetooth address, that will be automatically 281 // replaced with a actual address once it is available, i.e. when BTstack boots 282 // up and starts talking to a Bluetooth module. 283 gap_set_local_name("A2DP Sink Demo 00:00:00:00:00:00"); 284 gap_discoverable_control(1); 285 gap_set_class_of_device(0x200408); 286 287 #ifdef HAVE_AUDIO_DMA 288 static btstack_data_source_t hal_audio_dma_data_source; 289 // Set up polling data source. 290 btstack_run_loop_set_data_source_handler(&hal_audio_dma_data_source, &hal_audio_dma_process); 291 btstack_run_loop_enable_data_source_callbacks(&hal_audio_dma_data_source, DATA_SOURCE_CALLBACK_POLL); 292 btstack_run_loop_add_data_source(&hal_audio_dma_data_source); 293 #endif 294 295 #ifdef HAVE_BTSTACK_STDIN 296 // Parse human readable Bluetooth address. 297 sscanf_bd_addr(device_addr_string, device_addr); 298 btstack_stdin_setup(stdin_process); 299 #endif 300 return 0; 301 } 302 /* LISTING_END */ 303 304 #ifdef HAVE_PORTAUDIO 305 static int portaudio_callback( const void *inputBuffer, void *outputBuffer, 306 unsigned long framesPerBuffer, 307 const PaStreamCallbackTimeInfo* timeInfo, 308 PaStreamCallbackFlags statusFlags, 309 void *userData ) { 310 311 /** portaudio_callback is called from different thread, don't use hci_dump / log_info here without additional checks */ 312 313 // Prevent unused variable warnings. 314 (void) timeInfo; 315 (void) statusFlags; 316 (void) inputBuffer; 317 (void) userData; 318 319 int bytes_to_copy = framesPerBuffer * BYTES_PER_FRAME; 320 321 // fill ring buffer with silence while stream is paused 322 if (audio_stream_paused){ 323 if (btstack_ring_buffer_bytes_available(&ring_buffer) < PREBUFFER_BYTES){ 324 memset(outputBuffer, 0, bytes_to_copy); 325 return 0; 326 } else { 327 // resume playback 328 audio_stream_paused = 0; 329 } 330 } 331 332 // get data from ring buffer 333 uint32_t bytes_read = 0; 334 btstack_ring_buffer_read(&ring_buffer, outputBuffer, bytes_to_copy, &bytes_read); 335 bytes_to_copy -= bytes_read; 336 337 // fill ring buffer with silence if there are not enough bytes to copy 338 if (bytes_to_copy){ 339 memset(outputBuffer + bytes_read, 0, bytes_to_copy); 340 audio_stream_paused = 1; 341 } 342 return 0; 343 } 344 #endif 345 346 #ifdef HAVE_AUDIO_DMA 347 static int next_buffer(int current){ 348 if (current == NUM_AUDIO_BUFFERS-1) return 0; 349 return current + 1; 350 } 351 static uint8_t * start_of_buffer(int num){ 352 return (uint8_t *) &audio_samples[num * DMA_AUDIO_FRAMES * 2]; 353 } 354 void hal_audio_dma_done(void){ 355 if (audio_stream_paused){ 356 hal_audio_dma_play((const uint8_t *) silent_buffer, DMA_AUDIO_FRAMES*4); 357 return; 358 } 359 // next buffer 360 int next_playback_buffer = next_buffer(playback_buffer); 361 uint8_t * playback_data; 362 if (next_playback_buffer == write_buffer){ 363 364 // TODO: stop codec while playing silence when getting 'stream paused' 365 366 // start playing silence 367 audio_stream_paused = 1; 368 hal_audio_dma_play((const uint8_t *) silent_buffer, DMA_AUDIO_FRAMES*4); 369 printf("%6u - paused - bytes in buffer %u\n", (int) btstack_run_loop_get_time_ms(), btstack_ring_buffer_bytes_available(&ring_buffer)); 370 return; 371 } 372 playback_buffer = next_playback_buffer; 373 playback_data = start_of_buffer(playback_buffer); 374 hal_audio_dma_play(playback_data, audio_samples_len[playback_buffer]); 375 // btstack_run_loop_embedded_trigger(); 376 } 377 #endif 378 379 380 #ifdef HAVE_AUDIO_DMA 381 static void hal_audio_dma_process(btstack_data_source_t * ds, btstack_data_source_callback_type_t callback_type){ 382 UNUSED(ds); 383 UNUSED(callback_type); 384 385 if (!media_initialized) return; 386 387 int trigger_resume = 0; 388 if (audio_stream_paused) { 389 if (sbc_frame_size && btstack_ring_buffer_bytes_available(&ring_buffer) >= OPTIMAL_FRAMES_MIN * sbc_frame_size){ 390 trigger_resume = 1; 391 // reset buffers 392 playback_buffer = NUM_AUDIO_BUFFERS - 1; 393 write_buffer = 0; 394 } else { 395 return; 396 } 397 } 398 399 while (playback_buffer != write_buffer && btstack_ring_buffer_bytes_available(&ring_buffer) >= sbc_frame_size ){ 400 uint8_t frame[MAX_SBC_FRAME_SIZE]; 401 uint32_t bytes_read = 0; 402 btstack_ring_buffer_read(&ring_buffer, frame, sbc_frame_size, &bytes_read); 403 btstack_sbc_decoder_process_data(&state, 0, frame, sbc_frame_size); 404 } 405 406 if (trigger_resume){ 407 printf("%6u - resume\n", (int) btstack_run_loop_get_time_ms()); 408 audio_stream_paused = 0; 409 } 410 } 411 #endif 412 413 static int media_processing_init(avdtp_media_codec_configuration_sbc_t configuration){ 414 if (media_initialized) return 0; 415 #ifdef DECODE_SBC 416 btstack_sbc_decoder_init(&state, mode, handle_pcm_data, NULL); 417 #endif 418 419 #ifdef STORE_SBC_TO_WAV_FILE 420 wav_writer_open(wav_filename, configuration.num_channels, configuration.sampling_frequency); 421 #endif 422 423 #ifdef STORE_SBC_TO_SBC_FILE 424 sbc_file = fopen(sbc_filename, "wb"); 425 #endif 426 427 #ifdef HAVE_PORTAUDIO 428 // int frames_per_buffer = configuration.frames_per_buffer; 429 PaError err; 430 PaStreamParameters outputParameters; 431 const PaDeviceInfo *deviceInfo; 432 433 /* -- initialize PortAudio -- */ 434 err = Pa_Initialize(); 435 if (err != paNoError){ 436 printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err)); 437 return err; 438 } 439 /* -- setup input and output -- */ 440 outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */ 441 outputParameters.channelCount = configuration.num_channels; 442 outputParameters.sampleFormat = PA_SAMPLE_TYPE; 443 outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency; 444 outputParameters.hostApiSpecificStreamInfo = NULL; 445 deviceInfo = Pa_GetDeviceInfo( outputParameters.device ); 446 printf("PortAudio: Output device: %s\n", deviceInfo->name); 447 log_info("PortAudio: Output device: %s", deviceInfo->name); 448 /* -- setup stream -- */ 449 err = Pa_OpenStream( 450 &stream, 451 NULL, /* &inputParameters */ 452 &outputParameters, 453 configuration.sampling_frequency, 454 0, 455 paClipOff, /* we won't output out of range samples so don't bother clipping them */ 456 portaudio_callback, /* use callback */ 457 NULL ); 458 459 if (err != paNoError){ 460 printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err)); 461 return err; 462 } 463 log_info("PortAudio: stream opened"); 464 printf("PortAudio: stream opened\n"); 465 #endif 466 #ifdef HAVE_AUDIO_DMA 467 audio_stream_paused = 1; 468 hal_audio_dma_init(configuration.sampling_frequency); 469 hal_audio_dma_set_audio_played(&hal_audio_dma_done); 470 // start playing silence 471 hal_audio_dma_done(); 472 #endif 473 474 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 475 memset(ring_buffer_storage, 0, sizeof(ring_buffer_storage)); 476 btstack_ring_buffer_init(&ring_buffer, ring_buffer_storage, sizeof(ring_buffer_storage)); 477 audio_stream_started = 0; 478 audio_stream_paused = 0; 479 #endif 480 media_initialized = 1; 481 return 0; 482 } 483 484 static void media_processing_close(void){ 485 if (!media_initialized) return; 486 media_initialized = 0; 487 488 #ifdef STORE_SBC_TO_WAV_FILE 489 wav_writer_close(); 490 int total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 491 492 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); 493 printf("WAV Writer: Written %d frames to wav file: %s\n", frame_count, wav_filename); 494 #endif 495 496 #ifdef STORE_SBC_TO_SBC_FILE 497 fclose(sbc_file); 498 #endif 499 500 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 501 audio_stream_started = 0; 502 #endif 503 504 #ifdef HAVE_PORTAUDIO 505 printf("PortAudio: Steram closed\n"); 506 log_info("PortAudio: Stream closed"); 507 508 PaError err = Pa_StopStream(stream); 509 if (err != paNoError){ 510 printf("Error stopping the stream: \"%s\"\n", Pa_GetErrorText(err)); 511 log_error("Error stopping the stream: \"%s\"", Pa_GetErrorText(err)); 512 return; 513 } 514 err = Pa_CloseStream(stream); 515 if (err != paNoError){ 516 printf("Error closing the stream: \"%s\"\n", Pa_GetErrorText(err)); 517 log_error("Error closing the stream: \"%s\"", Pa_GetErrorText(err)); 518 return; 519 } 520 err = Pa_Terminate(); 521 if (err != paNoError){ 522 printf("Error terminating portaudio: \"%s\"\n", Pa_GetErrorText(err)); 523 log_error("Error terminating portaudio: \"%s\"", Pa_GetErrorText(err)); 524 return; 525 } 526 #endif 527 528 #ifdef HAVE_AUDIO_DMA 529 hal_audio_dma_close(); 530 #endif 531 } 532 533 534 /* @section Handle Media Data Packet 535 * 536 * @text Media data packets, in this case the audio data, are received through the handle_l2cap_media_data_packet callback. 537 * Currently, only the SBC media codec is supported. Hence, the media data consists of the media packet header and the SBC packet. 538 * The SBC data will be decoded using an SBC decoder if either HAVE_PORTAUDIO or STORE_SBC_TO_WAV_FILE directive is defined. 539 * The resulting PCM frames can be then captured through a PCM data callback registered during SBC decoder setup, i.e. the 540 * handle_pcm_data callback. 541 */ 542 543 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) || defined(HAVE_AUDIO_DMA) 544 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context); 545 #endif 546 547 static int read_media_data_header(uint8_t * packet, int size, int * offset, avdtp_media_packet_header_t * media_header); 548 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header); 549 550 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size){ 551 UNUSED(seid); 552 int pos = 0; 553 554 avdtp_media_packet_header_t media_header; 555 if (!read_media_data_header(packet, size, &pos, &media_header)) return; 556 557 avdtp_sbc_codec_header_t sbc_header; 558 if (!read_sbc_header(packet, size, &pos, &sbc_header)) return; 559 560 #ifdef HAVE_AUDIO_DMA 561 // store sbc frame size for buffer management 562 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 563 #endif 564 565 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 566 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 567 #endif 568 569 #ifdef HAVE_AUDIO_DMA 570 btstack_ring_buffer_write(&ring_buffer, packet+pos, size-pos); 571 572 // decide on audio sync drift based on number of sbc frames in queue 573 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&ring_buffer) / sbc_frame_size; 574 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 575 sbc_samples_fix = 1; // duplicate last sample 576 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 577 sbc_samples_fix = 0; // nothing to do 578 } else { 579 sbc_samples_fix = -1; // drop last sample 580 } 581 582 // dump 583 printf("%6u %03u %d\n", (int) btstack_run_loop_get_time_ms(), sbc_frames_in_buffer, sbc_samples_fix); 584 #endif 585 586 #ifdef STORE_SBC_TO_SBC_FILE 587 fwrite(packet+pos, size-pos, 1, sbc_file); 588 #endif 589 } 590 591 /* @section Handle PCM Data 592 * 593 * @text In this example, we use the [PortAudio library](http://www.portaudio.com) to play the audio stream. 594 * The PCM data are bufferd in a ring buffer. 595 * Aditionally, tha audio data can be stored in the avdtp_sink.wav file. 596 */ 597 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) || defined(HAVE_AUDIO_DMA) 598 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context){ 599 UNUSED(sample_rate); 600 UNUSED(context); 601 602 #ifdef STORE_SBC_TO_WAV_FILE 603 wav_writer_write_int16(num_samples*num_channels, data); 604 frame_count++; 605 #endif 606 607 #ifdef HAVE_PORTAUDIO 608 // store pcm samples in ring buffer 609 btstack_ring_buffer_write(&ring_buffer, (uint8_t *)data, num_samples*num_channels*2); 610 611 if (!audio_stream_started){ 612 audio_stream_paused = 1; 613 /* -- start stream -- */ 614 PaError err = Pa_StartStream(stream); 615 if (err != paNoError){ 616 printf("Error starting the stream: \"%s\"\n", Pa_GetErrorText(err)); 617 return; 618 } 619 audio_stream_started = 1; 620 } 621 #endif 622 623 #ifdef HAVE_AUDIO_DMA 624 // store in ring buffer 625 uint8_t * write_data = start_of_buffer(write_buffer); 626 uint16_t len = num_samples*num_channels*2; 627 memcpy(write_data, data, len); 628 audio_samples_len[write_buffer] = len; 629 630 // add/drop audio frame to fix drift 631 if (sbc_samples_fix > 0){ 632 memcpy(write_data + len, write_data + len - 4, 4); 633 audio_samples_len[write_buffer] += 4; 634 } 635 if (sbc_samples_fix < 0){ 636 audio_samples_len[write_buffer] -= 4; 637 } 638 639 write_buffer = next_buffer(write_buffer); 640 #endif 641 } 642 #endif 643 644 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header){ 645 int sbc_header_len = 12; // without crc 646 int pos = *offset; 647 648 if (size - pos < sbc_header_len){ 649 printf("Not enough data to read SBC header, expected %d, received %d\n", sbc_header_len, size-pos); 650 return 1; 651 } 652 653 sbc_header->fragmentation = get_bit16(packet[pos], 7); 654 sbc_header->starting_packet = get_bit16(packet[pos], 6); 655 sbc_header->last_packet = get_bit16(packet[pos], 5); 656 sbc_header->num_frames = packet[pos] & 0x0f; 657 pos++; 658 // 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); 659 *offset = pos; 660 return 0; 661 } 662 663 static int read_media_data_header(uint8_t *packet, int size, int *offset, avdtp_media_packet_header_t *media_header){ 664 int media_header_len = 12; // without crc 665 int pos = *offset; 666 667 if (size - pos < media_header_len){ 668 printf("Not enough data to read media packet header, expected %d, received %d\n", media_header_len, size-pos); 669 return 1; 670 } 671 672 media_header->version = packet[pos] & 0x03; 673 media_header->padding = get_bit16(packet[pos],2); 674 media_header->extension = get_bit16(packet[pos],3); 675 media_header->csrc_count = (packet[pos] >> 4) & 0x0F; 676 pos++; 677 678 media_header->marker = get_bit16(packet[pos],0); 679 media_header->payload_type = (packet[pos] >> 1) & 0x7F; 680 pos++; 681 682 media_header->sequence_number = big_endian_read_16(packet, pos); 683 pos+=2; 684 685 media_header->timestamp = big_endian_read_32(packet, pos); 686 pos+=4; 687 688 media_header->synchronization_source = big_endian_read_32(packet, pos); 689 pos+=4; 690 *offset = pos; 691 // TODO: read csrc list 692 693 // printf_hexdump( packet, pos ); 694 // printf("MEDIA HEADER: %u timestamp, version %u, padding %u, extension %u, csrc_count %u\n", 695 // media_header->timestamp, media_header->version, media_header->padding, media_header->extension, media_header->csrc_count); 696 // printf("MEDIA HEADER: marker %02x, payload_type %02x, sequence_number %u, synchronization_source %u\n", 697 // media_header->marker, media_header->payload_type, media_header->sequence_number, media_header->synchronization_source); 698 return 0; 699 } 700 701 static void dump_sbc_configuration(avdtp_media_codec_configuration_sbc_t configuration){ 702 printf("Received SBC configuration:\n"); 703 printf(" - num_channels: %d\n", configuration.num_channels); 704 printf(" - sampling_frequency: %d\n", configuration.sampling_frequency); 705 printf(" - channel_mode: %d\n", configuration.channel_mode); 706 printf(" - block_length: %d\n", configuration.block_length); 707 printf(" - subbands: %d\n", configuration.subbands); 708 printf(" - allocation_method: %d\n", configuration.allocation_method); 709 printf(" - bitpool_value [%d, %d] \n", configuration.min_bitpool_value, configuration.max_bitpool_value); 710 printf("\n"); 711 } 712 713 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 714 UNUSED(channel); 715 UNUSED(size); 716 uint16_t local_cid; 717 uint8_t status = 0xFF; 718 bd_addr_t adress; 719 720 if (packet_type != HCI_EVENT_PACKET) return; 721 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 722 switch (packet[2]){ 723 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 724 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 725 if (avrcp_cid != 0 && avrcp_cid != local_cid) { 726 printf("AVRCP demo: Connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", avrcp_cid, local_cid); 727 return; 728 } 729 730 status = avrcp_subevent_connection_established_get_status(packet); 731 if (status != ERROR_CODE_SUCCESS){ 732 printf("AVRCP demo: Connection failed: status 0x%02x\n", status); 733 avrcp_cid = 0; 734 return; 735 } 736 737 avrcp_cid = local_cid; 738 avrcp_connected = 1; 739 avrcp_subevent_connection_established_get_bd_addr(packet, adress); 740 printf("AVRCP demo: Channel successfully opened: %s, avrcp_cid 0x%02x\n", bd_addr_to_str(adress), avrcp_cid); 741 742 // automatically enable notifications 743 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 744 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 745 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED); 746 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 747 return; 748 } 749 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 750 printf("AVRCP demo: Channel released: avrcp_cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 751 avrcp_cid = 0; 752 avrcp_connected = 0; 753 return; 754 default: 755 break; 756 } 757 758 status = packet[5]; 759 if (!avrcp_cid) return; 760 761 // ignore INTERIM status 762 if (status == AVRCP_CTYPE_RESPONSE_INTERIM) return; 763 764 printf("AVRCP demo: command status: %s, ", avrcp_ctype2str(status)); 765 switch (packet[2]){ 766 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED: 767 printf("notification, playback status changed %s\n", avrcp_play_status2str(avrcp_subevent_notification_playback_status_changed_get_play_status(packet))); 768 return; 769 case AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED: 770 printf("notification, playing content changed\n"); 771 return; 772 case AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED: 773 printf("notification track changed\n"); 774 return; 775 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 776 printf("notification absolute volume changed %d\n", avrcp_subevent_notification_volume_changed_get_absolute_volume(packet)); 777 return; 778 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 779 printf("notification changed\n"); 780 return; 781 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 782 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 783 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 784 printf("%s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 785 break; 786 } 787 case AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO: 788 if (avrcp_subevent_now_playing_title_info_get_value_len(packet) > 0){ 789 memcpy(value, avrcp_subevent_now_playing_title_info_get_value(packet), avrcp_subevent_now_playing_title_info_get_value_len(packet)); 790 printf(" Title: %s\n", value); 791 } 792 break; 793 794 case AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO: 795 if (avrcp_subevent_now_playing_artist_info_get_value_len(packet) > 0){ 796 memcpy(value, avrcp_subevent_now_playing_artist_info_get_value(packet), avrcp_subevent_now_playing_artist_info_get_value_len(packet)); 797 printf(" Artist: %s\n", value); 798 } 799 break; 800 801 case AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO: 802 if (avrcp_subevent_now_playing_album_info_get_value_len(packet) > 0){ 803 memcpy(value, avrcp_subevent_now_playing_album_info_get_value(packet), avrcp_subevent_now_playing_album_info_get_value_len(packet)); 804 printf(" Album: %s\n", value); 805 } 806 break; 807 808 case AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO: 809 if (avrcp_subevent_now_playing_genre_info_get_value_len(packet) > 0){ 810 memcpy(value, avrcp_subevent_now_playing_genre_info_get_value(packet), avrcp_subevent_now_playing_genre_info_get_value_len(packet)); 811 printf(" Genre: %s\n", value); 812 } 813 break; 814 815 case AVRCP_SUBEVENT_PLAY_STATUS: 816 printf("song length: %d ms, song position: %d ms, play status: %s\n", 817 avrcp_subevent_play_status_get_song_length(packet), 818 avrcp_subevent_play_status_get_song_position(packet), 819 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 820 break; 821 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 822 printf("operation done %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 823 break; 824 case AVRCP_SUBEVENT_OPERATION_START: 825 printf("operation start %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 826 break; 827 case AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE: 828 // response to set shuffle and repeat mode 829 printf("\n"); 830 break; 831 default: 832 printf("AVRCP demo: event is not parsed\n"); 833 break; 834 } 835 } 836 837 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 838 UNUSED(channel); 839 UNUSED(size); 840 uint16_t cid; 841 bd_addr_t address; 842 uint8_t status; 843 844 if (packet_type != HCI_EVENT_PACKET) return; 845 if (hci_event_packet_get_type(packet) != HCI_EVENT_A2DP_META) return; 846 847 switch (packet[2]){ 848 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 849 printf("A2DP Sink demo: received non SBC codec. not implemented.\n"); 850 break; 851 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 852 printf("A2DP Sink demo: received SBC codec configuration.\n"); 853 sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 854 sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 855 sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 856 sbc_configuration.channel_mode = a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet); 857 sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 858 sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 859 sbc_configuration.allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 860 sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 861 sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 862 sbc_configuration.frames_per_buffer = sbc_configuration.subbands * sbc_configuration.block_length; 863 dump_sbc_configuration(sbc_configuration); 864 865 if (sbc_configuration.reconfigure){ 866 media_processing_close(); 867 } 868 // prepare media processing 869 media_processing_init(sbc_configuration); 870 break; 871 } 872 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 873 a2dp_subevent_stream_established_get_bd_addr(packet, address); 874 status = a2dp_subevent_stream_established_get_status(packet); 875 cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 876 printf("A2DP_SUBEVENT_STREAM_ESTABLISHED %d, %d \n", cid, a2dp_cid); 877 if (!a2dp_cid){ 878 // incoming connection 879 a2dp_cid = cid; 880 } else if (cid != a2dp_cid) { 881 break; 882 } 883 if (status){ 884 a2dp_sink_connected = 0; 885 printf("A2DP Sink demo: streaming connection failed, status 0x%02x\n", status); 886 break; 887 } 888 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); 889 890 memcpy(device_addr, address, 6); 891 local_seid = a2dp_subevent_stream_established_get_local_seid(packet); 892 a2dp_sink_connected = 1; 893 break; 894 895 case A2DP_SUBEVENT_STREAM_STARTED: 896 cid = a2dp_subevent_stream_started_get_a2dp_cid(packet); 897 if (cid != a2dp_cid) break; 898 local_seid = a2dp_subevent_stream_started_get_local_seid(packet); 899 printf("A2DP Sink demo: stream started, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 900 // started 901 media_processing_init(sbc_configuration); 902 break; 903 904 case A2DP_SUBEVENT_STREAM_SUSPENDED: 905 cid = a2dp_subevent_stream_suspended_get_a2dp_cid(packet); 906 if (cid != a2dp_cid) break; 907 local_seid = a2dp_subevent_stream_suspended_get_local_seid(packet); 908 printf("A2DP Sink demo: stream paused, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 909 media_processing_close(); 910 break; 911 912 case A2DP_SUBEVENT_STREAM_RELEASED: 913 cid = a2dp_subevent_stream_released_get_a2dp_cid(packet); 914 if (cid != a2dp_cid) { 915 printf("A2DP Sink demo: unexpected cid 0x%02x instead of 0x%02x\n", cid, a2dp_cid); 916 break; 917 } 918 local_seid = a2dp_subevent_stream_released_get_local_seid(packet); 919 printf("A2DP Sink demo: stream released, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 920 media_processing_close(); 921 break; 922 case A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 923 cid = a2dp_subevent_signaling_connection_released_get_a2dp_cid(packet); 924 if (cid != a2dp_cid) { 925 printf("A2DP Sink demo: unexpected cid 0x%02x instead of 0x%02x\n", cid, a2dp_cid); 926 break; 927 } 928 a2dp_sink_connected = 0; 929 printf("A2DP Sink demo: signaling connection released\n"); 930 break; 931 default: 932 printf("A2DP Sink demo: not parsed 0x%02x\n", packet[2]); 933 break; 934 } 935 } 936 937 #ifdef HAVE_BTSTACK_STDIN 938 static void show_usage(void){ 939 bd_addr_t iut_address; 940 gap_local_bd_addr(iut_address); 941 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 942 printf("b - AVDTP Sink create connection to addr %s\n", bd_addr_to_str(device_addr)); 943 printf("B - AVDTP Sink disconnect\n"); 944 printf("c - AVRCP create connection to addr %s\n", bd_addr_to_str(device_addr)); 945 printf("C - AVRCP disconnect\n"); 946 947 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 948 printf("O - get play status\n"); 949 printf("j - get now playing info\n"); 950 printf("k - play\n"); 951 printf("K - stop\n"); 952 printf("L - pause\n"); 953 printf("u - start fast forward\n"); 954 printf("U - stop fast forward\n"); 955 printf("n - start rewind\n"); 956 printf("N - stop rewind\n"); 957 printf("i - forward\n"); 958 printf("I - backward\n"); 959 printf("t - volume up\n"); 960 printf("T - volume down\n"); 961 printf("p - absolute volume of 50 percent\n"); 962 printf("M - mute\n"); 963 printf("r - skip\n"); 964 printf("q - query repeat and shuffle mode\n"); 965 printf("v - repeat single track\n"); 966 printf("x - repeat all tracks\n"); 967 printf("X - disable repeat mode\n"); 968 printf("z - shuffle all tracks\n"); 969 printf("Z - disable shuffle mode\n"); 970 printf("---\n"); 971 } 972 #endif 973 974 #ifdef HAVE_BTSTACK_STDIN 975 static void stdin_process(char cmd){ 976 uint8_t status = ERROR_CODE_SUCCESS; 977 printf("stdin_process \n"); 978 if (!avrcp_connected){ 979 switch (cmd){ 980 case 'b': 981 case 'B': 982 case 'c': 983 break; 984 default: 985 printf("Command '%c' cannot be performed - please use 'c' to establish an AVRCP connection with device (addr %s).\n", cmd, bd_addr_to_str(device_addr)); 986 return; 987 } 988 989 } 990 991 switch (cmd){ 992 case 'b': 993 status = a2dp_sink_establish_stream(device_addr, local_seid, &a2dp_cid); 994 printf(" - Create AVDTP connection to addr %s, and local seid %d, expected cid 0x%02x.\n", bd_addr_to_str(device_addr), local_seid, a2dp_cid); 995 break; 996 case 'B': 997 printf(" - AVDTP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 998 status = avdtp_sink_disconnect(a2dp_cid); 999 break; 1000 case 'c': 1001 printf(" - Create AVRCP connection to addr %s.\n", bd_addr_to_str(device_addr)); 1002 status = avrcp_controller_connect(device_addr, &avrcp_cid); 1003 break; 1004 case 'C': 1005 printf(" - AVRCP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 1006 status = avrcp_controller_disconnect(avrcp_cid); 1007 break; 1008 1009 case '\n': 1010 case '\r': 1011 break; 1012 case 'O': 1013 printf(" - get play status\n"); 1014 status = avrcp_controller_get_play_status(avrcp_cid); 1015 break; 1016 case 'j': 1017 printf(" - get now playing info\n"); 1018 status = avrcp_controller_get_now_playing_info(avrcp_cid); 1019 break; 1020 case 'k': 1021 printf(" - play\n"); 1022 status = avrcp_controller_play(avrcp_cid); 1023 break; 1024 case 'K': 1025 printf(" - stop\n"); 1026 status = avrcp_controller_stop(avrcp_cid); 1027 break; 1028 case 'L': 1029 printf(" - pause\n"); 1030 status = avrcp_controller_pause(avrcp_cid); 1031 break; 1032 case 'u': 1033 printf(" - start fast forward\n"); 1034 status = avrcp_controller_start_fast_forward(avrcp_cid); 1035 break; 1036 case 'U': 1037 printf(" - stop fast forward\n"); 1038 status = avrcp_controller_stop_fast_forward(avrcp_cid); 1039 break; 1040 case 'n': 1041 printf(" - start rewind\n"); 1042 status = avrcp_controller_start_rewind(avrcp_cid); 1043 break; 1044 case 'N': 1045 printf(" - stop rewind\n"); 1046 status = avrcp_controller_stop_rewind(avrcp_cid); 1047 break; 1048 case 'i': 1049 printf(" - forward\n"); 1050 status = avrcp_controller_forward(avrcp_cid); 1051 break; 1052 case 'I': 1053 printf(" - backward\n"); 1054 status = avrcp_controller_backward(avrcp_cid); 1055 break; 1056 case 't': 1057 printf(" - volume up\n"); 1058 status = avrcp_controller_volume_up(avrcp_cid); 1059 break; 1060 case 'T': 1061 printf(" - volume down\n"); 1062 status = avrcp_controller_volume_down(avrcp_cid); 1063 break; 1064 case 'p': 1065 printf(" - absolute volume of 50 percent\n"); 1066 status = avrcp_controller_set_absolute_volume(avrcp_cid, 50); 1067 break; 1068 case 'M': 1069 printf(" - mute\n"); 1070 status = avrcp_controller_mute(avrcp_cid); 1071 break; 1072 case 'r': 1073 printf(" - skip\n"); 1074 status = avrcp_controller_skip(avrcp_cid); 1075 break; 1076 case 'q': 1077 printf(" - query repeat and shuffle mode\n"); 1078 status = avrcp_controller_query_shuffle_and_repeat_modes(avrcp_cid); 1079 break; 1080 case 'v': 1081 printf(" - repeat single track\n"); 1082 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 1083 break; 1084 case 'x': 1085 printf(" - repeat all tracks\n"); 1086 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 1087 break; 1088 case 'X': 1089 printf(" - disable repeat mode\n"); 1090 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_OFF); 1091 break; 1092 case 'z': 1093 printf(" - shuffle all tracks\n"); 1094 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 1095 break; 1096 case 'Z': 1097 printf(" - disable shuffle mode\n"); 1098 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_OFF); 1099 break; 1100 default: 1101 show_usage(); 1102 return; 1103 } 1104 if (status != ERROR_CODE_SUCCESS){ 1105 printf("Could not perform command, status 0x%2x\n", status); 1106 } 1107 } 1108 #endif 1109 1110 int btstack_main(int argc, const char * argv[]); 1111 int btstack_main(int argc, const char * argv[]){ 1112 (void)argc; 1113 (void)argv; 1114 1115 int err = a2dp_sink_and_avrcp_services_init(); 1116 if (err) return err; 1117 // turn on! 1118 printf("Starting BTstack ...\n"); 1119 hci_power_control(HCI_POWER_ON); 1120 return 0; 1121 } 1122 /* EXAMPLE_END */ 1123