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 stream and control its 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 * @test To test with a remote device, e.g. a mobile phone, 54 * pair from the remote device with the demo, then start playing music on the remote device. 55 * Alternatively, set the device_addr_string to the Bluetooth address of your 56 * remote device in the code, and call connect from the UI. 57 * 58 * @test To controll the playback, tap SPACE on the console to show the available 59 * AVRCP commands. 60 */ 61 // ***************************************************************************** 62 63 #include <stdint.h> 64 #include <stdio.h> 65 #include <stdlib.h> 66 #include <string.h> 67 68 #include "btstack.h" 69 70 #define AVRCP_BROWSING_ENABLED 0 71 72 #ifdef HAVE_BTSTACK_STDIN 73 #include "btstack_stdin.h" 74 #endif 75 76 #ifdef HAVE_AUDIO_DMA 77 #include "btstack_ring_buffer.h" 78 #include "hal_audio_dma.h" 79 #endif 80 81 #ifdef HAVE_PORTAUDIO 82 #include "btstack_ring_buffer.h" 83 #include <portaudio.h> 84 #endif 85 86 #ifdef HAVE_POSIX_FILE_IO 87 #include "wav_util.h" 88 #define STORE_SBC_TO_SBC_FILE 89 #define STORE_SBC_TO_WAV_FILE 90 #endif 91 92 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) || defined(HAVE_AUDIO_DMA) 93 #define DECODE_SBC 94 #endif 95 96 #define NUM_CHANNELS 2 97 #define BYTES_PER_FRAME (2*NUM_CHANNELS) 98 #define MAX_SBC_FRAME_SIZE 120 99 100 // SBC Decoder for WAV file or PortAudio 101 #ifdef DECODE_SBC 102 static btstack_sbc_decoder_state_t state; 103 static btstack_sbc_mode_t mode = SBC_MODE_STANDARD; 104 #endif 105 106 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 107 #define PREBUFFER_MS 200 108 static int audio_stream_started = 0; 109 static int audio_stream_paused = 0; 110 static btstack_ring_buffer_t ring_buffer; 111 #endif 112 113 #ifdef HAVE_AUDIO_DMA 114 // below 30: add samples, 30-40: fine, above 40: drop samples 115 #define OPTIMAL_FRAMES_MIN 30 116 #define OPTIMAL_FRAMES_MAX 40 117 #define ADDITIONAL_FRAMES 10 118 #define DMA_AUDIO_FRAMES 128 119 #define DMA_MAX_FILL_FRAMES 1 120 #define NUM_AUDIO_BUFFERS 2 121 122 static uint16_t audio_samples[(DMA_AUDIO_FRAMES + DMA_MAX_FILL_FRAMES)*2*NUM_AUDIO_BUFFERS]; 123 static uint16_t audio_samples_len[NUM_AUDIO_BUFFERS]; 124 static uint8_t ring_buffer_storage[(OPTIMAL_FRAMES_MAX + ADDITIONAL_FRAMES) * MAX_SBC_FRAME_SIZE]; 125 static const uint16_t silent_buffer[DMA_AUDIO_FRAMES*2]; 126 static volatile int playback_buffer; 127 static int write_buffer; 128 static uint8_t sbc_frame_size; 129 static int sbc_samples_fix; 130 #endif 131 132 // PortAdudio - live playback 133 #ifdef HAVE_PORTAUDIO 134 #define PA_SAMPLE_TYPE paInt16 135 #define SAMPLE_RATE 48000 136 #define FRAMES_PER_BUFFER 128 137 #define PREBUFFER_BYTES (PREBUFFER_MS*SAMPLE_RATE/1000*BYTES_PER_FRAME) 138 static PaStream * stream; 139 static uint8_t ring_buffer_storage[2*PREBUFFER_BYTES]; 140 #endif 141 142 // WAV File 143 #ifdef STORE_SBC_TO_WAV_FILE 144 static int frame_count = 0; 145 static char * wav_filename = "avdtp_sink.wav"; 146 #endif 147 148 #ifdef STORE_SBC_TO_SBC_FILE 149 static FILE * sbc_file; 150 static char * sbc_filename = "avdtp_sink.sbc"; 151 #endif 152 153 typedef struct { 154 // bitmaps 155 uint8_t sampling_frequency_bitmap; 156 uint8_t channel_mode_bitmap; 157 uint8_t block_length_bitmap; 158 uint8_t subbands_bitmap; 159 uint8_t allocation_method_bitmap; 160 uint8_t min_bitpool_value; 161 uint8_t max_bitpool_value; 162 } adtvp_media_codec_information_sbc_t; 163 164 typedef struct { 165 int reconfigure; 166 int num_channels; 167 int sampling_frequency; 168 int channel_mode; 169 int block_length; 170 int subbands; 171 int allocation_method; 172 int min_bitpool_value; 173 int max_bitpool_value; 174 int frames_per_buffer; 175 } avdtp_media_codec_configuration_sbc_t; 176 177 #ifdef HAVE_BTSTACK_STDIN 178 // mac 2011: static bd_addr_t remote = {0x04, 0x0C, 0xCE, 0xE4, 0x85, 0xD3}; 179 // pts: static bd_addr_t remote = {0x00, 0x1B, 0xDC, 0x08, 0x0A, 0xA5}; 180 // mac 2013: 181 // mac 2013: static const char * device_addr_string = "84:38:35:65:d1:15"; 182 // iPhone 5S: 183 static const char * device_addr_string = "54:E4:3A:26:A2:39"; 184 #endif 185 186 // bt dongle: -u 02-02 static bd_addr_t remote = {0x00, 0x02, 0x72, 0xDC, 0x31, 0xC1}; 187 188 static uint8_t sdp_avdtp_sink_service_buffer[150]; 189 static avdtp_media_codec_configuration_sbc_t sbc_configuration; 190 static uint16_t a2dp_cid = 0; 191 static uint8_t local_seid = 0; 192 static uint8_t value[100]; 193 194 static btstack_packet_callback_registration_t hci_event_callback_registration; 195 196 static int media_initialized = 0; 197 198 #ifdef HAVE_BTSTACK_STDIN 199 static bd_addr_t device_addr; 200 #endif 201 202 static uint16_t a2dp_sink_connected = 0; 203 static uint16_t avrcp_cid = 0; 204 static uint8_t avrcp_connected = 0; 205 static uint8_t sdp_avrcp_controller_service_buffer[200]; 206 207 static uint8_t media_sbc_codec_capabilities[] = { 208 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 209 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 210 2, 53 211 }; 212 213 static uint8_t media_sbc_codec_configuration[] = { 214 (AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 215 (AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 216 2, 53 217 }; 218 219 220 /* @section Main Application Setup 221 * 222 * @text The Listing MainConfiguration shows how to setup AD2P Sink and AVRCP controller services. 223 * To announce A2DP Sink and AVRCP Controller services, you need to create corresponding 224 * SDP records and register them with the SDP service. 225 * You'll also need to register several packet handlers: 226 * - 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). 227 * - 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. 228 * - 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. 229 * - avrcp_controller_packet_handler - used to receive answers for AVRCP commands, 230 * 231 * @text Note, currently only the SBC codec is supported. 232 * 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. 233 * 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. 234 * The initialization of the SBC decoder requires a callback that handles PCM data: 235 * - 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. 236 */ 237 238 /* LISTING_START(MainConfiguration): Setup Audio Sink and AVRCP Controller services */ 239 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size); 240 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 241 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size); 242 #ifdef HAVE_BTSTACK_STDIN 243 static void stdin_process(char cmd); 244 #endif 245 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 246 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context); 247 #endif 248 249 static int a2dp_sink_and_avrcp_services_init(void){ 250 // Register for HCI events. 251 hci_event_callback_registration.callback = &a2dp_sink_packet_handler; 252 hci_add_event_handler(&hci_event_callback_registration); 253 254 // Initialize L2CAP. 255 l2cap_init(); 256 257 // Initialize A2DP Sink. 258 a2dp_sink_init(); 259 // Register A2DP Sink for HCI events. 260 a2dp_sink_register_packet_handler(&a2dp_sink_packet_handler); 261 // Register A2DP Sink for receiving media data. 262 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 263 // Create a stream endpoint to which the streaming channel will be opened. 264 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); 265 if (status != ERROR_CODE_SUCCESS){ 266 printf("A2DP Sink: not enough memory to create local stream endpoint\n"); 267 return 1; 268 } 269 270 // Initialize AVRCP Controller. 271 avrcp_controller_init(); 272 // Register AVRCP for HCI events. 273 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 274 275 // Initialize SDP. 276 sdp_init(); 277 278 // Create A2DP sink service record and register it with SDP. 279 memset(sdp_avdtp_sink_service_buffer, 0, sizeof(sdp_avdtp_sink_service_buffer)); 280 a2dp_sink_create_sdp_record(sdp_avdtp_sink_service_buffer, 0x10001, 1, NULL, NULL); 281 sdp_register_service(sdp_avdtp_sink_service_buffer); 282 283 // Create AVRCP service record and register it with SDP. 284 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 285 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10001, AVRCP_BROWSING_ENABLED, 1, NULL, NULL); 286 sdp_register_service(sdp_avrcp_controller_service_buffer); 287 288 // Set local name with a template Bluetooth address, that will be automatically 289 // replaced with a actual address once it is available, i.e. when BTstack boots 290 // up and starts talking to a Bluetooth module. 291 gap_set_local_name("A2DP Sink Demo 00:00:00:00:00:00"); 292 gap_discoverable_control(1); 293 gap_set_class_of_device(0x200408); 294 295 #ifdef HAVE_AUDIO_DMA 296 static btstack_data_source_t hal_audio_dma_data_source; 297 // Set up polling data source. 298 btstack_run_loop_set_data_source_handler(&hal_audio_dma_data_source, &hal_audio_dma_process); 299 btstack_run_loop_enable_data_source_callbacks(&hal_audio_dma_data_source, DATA_SOURCE_CALLBACK_POLL); 300 btstack_run_loop_add_data_source(&hal_audio_dma_data_source); 301 #endif 302 303 #ifdef HAVE_BTSTACK_STDIN 304 // Parse human readable Bluetooth address. 305 sscanf_bd_addr(device_addr_string, device_addr); 306 btstack_stdin_setup(stdin_process); 307 #endif 308 return 0; 309 } 310 /* LISTING_END */ 311 312 #ifdef HAVE_PORTAUDIO 313 static int portaudio_callback( const void *inputBuffer, void *outputBuffer, 314 unsigned long framesPerBuffer, 315 const PaStreamCallbackTimeInfo* timeInfo, 316 PaStreamCallbackFlags statusFlags, 317 void *userData ) { 318 319 /** portaudio_callback is called from different thread, don't use hci_dump / log_info here without additional checks */ 320 321 // Prevent unused variable warnings. 322 (void) timeInfo; 323 (void) statusFlags; 324 (void) inputBuffer; 325 (void) userData; 326 327 int bytes_to_copy = framesPerBuffer * BYTES_PER_FRAME; 328 329 // fill ring buffer with silence while stream is paused 330 if (audio_stream_paused){ 331 if (btstack_ring_buffer_bytes_available(&ring_buffer) < PREBUFFER_BYTES){ 332 memset(outputBuffer, 0, bytes_to_copy); 333 return 0; 334 } else { 335 // resume playback 336 audio_stream_paused = 0; 337 } 338 } 339 340 // get data from ring buffer 341 uint32_t bytes_read = 0; 342 btstack_ring_buffer_read(&ring_buffer, outputBuffer, bytes_to_copy, &bytes_read); 343 bytes_to_copy -= bytes_read; 344 345 // fill ring buffer with silence if there are not enough bytes to copy 346 if (bytes_to_copy){ 347 memset(outputBuffer + bytes_read, 0, bytes_to_copy); 348 audio_stream_paused = 1; 349 } 350 return 0; 351 } 352 #endif 353 354 #ifdef HAVE_AUDIO_DMA 355 static int next_buffer(int current){ 356 if (current == NUM_AUDIO_BUFFERS-1) return 0; 357 return current + 1; 358 } 359 static uint8_t * start_of_buffer(int num){ 360 return (uint8_t *) &audio_samples[num * DMA_AUDIO_FRAMES * 2]; 361 } 362 void hal_audio_dma_done(void){ 363 if (audio_stream_paused){ 364 hal_audio_dma_play((const uint8_t *) silent_buffer, DMA_AUDIO_FRAMES*4); 365 return; 366 } 367 // next buffer 368 int next_playback_buffer = next_buffer(playback_buffer); 369 uint8_t * playback_data; 370 if (next_playback_buffer == write_buffer){ 371 372 // TODO: stop codec while playing silence when getting 'stream paused' 373 374 // start playing silence 375 audio_stream_paused = 1; 376 hal_audio_dma_play((const uint8_t *) silent_buffer, DMA_AUDIO_FRAMES*4); 377 printf("%6u - paused - bytes in buffer %u\n", (int) btstack_run_loop_get_time_ms(), btstack_ring_buffer_bytes_available(&ring_buffer)); 378 return; 379 } 380 playback_buffer = next_playback_buffer; 381 playback_data = start_of_buffer(playback_buffer); 382 hal_audio_dma_play(playback_data, audio_samples_len[playback_buffer]); 383 // btstack_run_loop_embedded_trigger(); 384 } 385 #endif 386 387 388 #ifdef HAVE_AUDIO_DMA 389 static void hal_audio_dma_process(btstack_data_source_t * ds, btstack_data_source_callback_type_t callback_type){ 390 UNUSED(ds); 391 UNUSED(callback_type); 392 393 if (!media_initialized) return; 394 395 int trigger_resume = 0; 396 if (audio_stream_paused) { 397 if (sbc_frame_size && btstack_ring_buffer_bytes_available(&ring_buffer) >= OPTIMAL_FRAMES_MIN * sbc_frame_size){ 398 trigger_resume = 1; 399 // reset buffers 400 playback_buffer = NUM_AUDIO_BUFFERS - 1; 401 write_buffer = 0; 402 } else { 403 return; 404 } 405 } 406 407 while (playback_buffer != write_buffer && btstack_ring_buffer_bytes_available(&ring_buffer) >= sbc_frame_size ){ 408 uint8_t frame[MAX_SBC_FRAME_SIZE]; 409 uint32_t bytes_read = 0; 410 btstack_ring_buffer_read(&ring_buffer, frame, sbc_frame_size, &bytes_read); 411 btstack_sbc_decoder_process_data(&state, 0, frame, sbc_frame_size); 412 } 413 414 if (trigger_resume){ 415 printf("%6u - resume\n", (int) btstack_run_loop_get_time_ms()); 416 audio_stream_paused = 0; 417 } 418 } 419 #endif 420 421 static int media_processing_init(avdtp_media_codec_configuration_sbc_t configuration){ 422 if (media_initialized) return 0; 423 #ifdef DECODE_SBC 424 btstack_sbc_decoder_init(&state, mode, handle_pcm_data, NULL); 425 #endif 426 427 #ifdef STORE_SBC_TO_WAV_FILE 428 wav_writer_open(wav_filename, configuration.num_channels, configuration.sampling_frequency); 429 #endif 430 431 #ifdef STORE_SBC_TO_SBC_FILE 432 sbc_file = fopen(sbc_filename, "wb"); 433 #endif 434 435 #ifdef HAVE_PORTAUDIO 436 // int frames_per_buffer = configuration.frames_per_buffer; 437 PaError err; 438 PaStreamParameters outputParameters; 439 const PaDeviceInfo *deviceInfo; 440 441 /* -- initialize PortAudio -- */ 442 err = Pa_Initialize(); 443 if (err != paNoError){ 444 printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err)); 445 return err; 446 } 447 /* -- setup input and output -- */ 448 outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */ 449 outputParameters.channelCount = configuration.num_channels; 450 outputParameters.sampleFormat = PA_SAMPLE_TYPE; 451 outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency; 452 outputParameters.hostApiSpecificStreamInfo = NULL; 453 deviceInfo = Pa_GetDeviceInfo( outputParameters.device ); 454 printf("PortAudio: Output device: %s\n", deviceInfo->name); 455 log_info("PortAudio: Output device: %s", deviceInfo->name); 456 /* -- setup stream -- */ 457 err = Pa_OpenStream( 458 &stream, 459 NULL, /* &inputParameters */ 460 &outputParameters, 461 configuration.sampling_frequency, 462 0, 463 paClipOff, /* we won't output out of range samples so don't bother clipping them */ 464 portaudio_callback, /* use callback */ 465 NULL ); 466 467 if (err != paNoError){ 468 printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err)); 469 return err; 470 } 471 log_info("PortAudio: stream opened"); 472 printf("PortAudio: stream opened\n"); 473 #endif 474 #ifdef HAVE_AUDIO_DMA 475 audio_stream_paused = 1; 476 hal_audio_dma_init(configuration.sampling_frequency); 477 hal_audio_dma_set_audio_played(&hal_audio_dma_done); 478 // start playing silence 479 hal_audio_dma_done(); 480 #endif 481 482 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 483 memset(ring_buffer_storage, 0, sizeof(ring_buffer_storage)); 484 btstack_ring_buffer_init(&ring_buffer, ring_buffer_storage, sizeof(ring_buffer_storage)); 485 audio_stream_started = 0; 486 audio_stream_paused = 0; 487 #endif 488 media_initialized = 1; 489 return 0; 490 } 491 492 static void media_processing_close(void){ 493 if (!media_initialized) return; 494 media_initialized = 0; 495 496 #ifdef STORE_SBC_TO_WAV_FILE 497 wav_writer_close(); 498 int total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 499 500 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); 501 printf("WAV Writer: Written %d frames to wav file: %s\n", frame_count, wav_filename); 502 #endif 503 504 #ifdef STORE_SBC_TO_SBC_FILE 505 fclose(sbc_file); 506 #endif 507 508 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 509 audio_stream_started = 0; 510 #endif 511 512 #ifdef HAVE_PORTAUDIO 513 printf("PortAudio: Steram closed\n"); 514 log_info("PortAudio: Stream closed"); 515 516 PaError err = Pa_StopStream(stream); 517 if (err != paNoError){ 518 printf("Error stopping the stream: \"%s\"\n", Pa_GetErrorText(err)); 519 log_error("Error stopping the stream: \"%s\"", Pa_GetErrorText(err)); 520 return; 521 } 522 err = Pa_CloseStream(stream); 523 if (err != paNoError){ 524 printf("Error closing the stream: \"%s\"\n", Pa_GetErrorText(err)); 525 log_error("Error closing the stream: \"%s\"", Pa_GetErrorText(err)); 526 return; 527 } 528 err = Pa_Terminate(); 529 if (err != paNoError){ 530 printf("Error terminating portaudio: \"%s\"\n", Pa_GetErrorText(err)); 531 log_error("Error terminating portaudio: \"%s\"", Pa_GetErrorText(err)); 532 return; 533 } 534 #endif 535 536 #ifdef HAVE_AUDIO_DMA 537 hal_audio_dma_close(); 538 #endif 539 } 540 541 542 /* @section Handle Media Data Packet 543 * 544 * @text Media data packets, in this case the audio data, are received through the handle_l2cap_media_data_packet callback. 545 * Currently, only the SBC media codec is supported. Hence, the media data consists of the media packet header and the SBC packet. 546 * The SBC data will be decoded using an SBC decoder if either HAVE_PORTAUDIO or STORE_SBC_TO_WAV_FILE directive is defined. 547 * The resulting PCM frames can be then captured through a PCM data callback registered during SBC decoder setup, i.e. the 548 * handle_pcm_data callback. 549 */ 550 551 static int read_media_data_header(uint8_t * packet, int size, int * offset, avdtp_media_packet_header_t * media_header); 552 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header); 553 554 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size){ 555 UNUSED(seid); 556 int pos = 0; 557 558 avdtp_media_packet_header_t media_header; 559 if (!read_media_data_header(packet, size, &pos, &media_header)) return; 560 561 avdtp_sbc_codec_header_t sbc_header; 562 if (!read_sbc_header(packet, size, &pos, &sbc_header)) return; 563 564 #ifdef HAVE_AUDIO_DMA 565 // store sbc frame size for buffer management 566 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 567 #endif 568 569 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 570 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 571 #endif 572 573 #ifdef HAVE_AUDIO_DMA 574 btstack_ring_buffer_write(&ring_buffer, packet+pos, size-pos); 575 576 // decide on audio sync drift based on number of sbc frames in queue 577 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&ring_buffer) / sbc_frame_size; 578 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 579 sbc_samples_fix = 1; // duplicate last sample 580 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 581 sbc_samples_fix = 0; // nothing to do 582 } else { 583 sbc_samples_fix = -1; // drop last sample 584 } 585 586 // dump 587 printf("%6u %03u %d\n", (int) btstack_run_loop_get_time_ms(), sbc_frames_in_buffer, sbc_samples_fix); 588 #endif 589 590 #ifdef STORE_SBC_TO_SBC_FILE 591 fwrite(packet+pos, size-pos, 1, sbc_file); 592 #endif 593 } 594 595 /* @section Handle PCM Data 596 * 597 * @text In this example, we use the [PortAudio library](http://www.portaudio.com) to play the audio stream. 598 * The PCM data are bufferd in a ring buffer. 599 * Aditionally, tha audio data can be stored in the avdtp_sink.wav file. 600 */ 601 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) || defined(HAVE_AUDIO_DMA) 602 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context){ 603 UNUSED(sample_rate); 604 UNUSED(context); 605 606 #ifdef STORE_SBC_TO_WAV_FILE 607 wav_writer_write_int16(num_samples*num_channels, data); 608 frame_count++; 609 #endif 610 611 #ifdef HAVE_PORTAUDIO 612 // store pcm samples in ring buffer 613 btstack_ring_buffer_write(&ring_buffer, (uint8_t *)data, num_samples*num_channels*2); 614 615 if (!audio_stream_started){ 616 audio_stream_paused = 1; 617 /* -- start stream -- */ 618 PaError err = Pa_StartStream(stream); 619 if (err != paNoError){ 620 printf("Error starting the stream: \"%s\"\n", Pa_GetErrorText(err)); 621 return; 622 } 623 audio_stream_started = 1; 624 } 625 #endif 626 627 #ifdef HAVE_AUDIO_DMA 628 // store in ring buffer 629 uint8_t * write_data = start_of_buffer(write_buffer); 630 uint16_t len = num_samples*num_channels*2; 631 memcpy(write_data, data, len); 632 audio_samples_len[write_buffer] = len; 633 634 // add/drop audio frame to fix drift 635 if (sbc_samples_fix > 0){ 636 memcpy(write_data + len, write_data + len - 4, 4); 637 audio_samples_len[write_buffer] += 4; 638 } 639 if (sbc_samples_fix < 0){ 640 audio_samples_len[write_buffer] -= 4; 641 } 642 643 write_buffer = next_buffer(write_buffer); 644 #endif 645 } 646 #endif 647 648 static int read_sbc_header(uint8_t * packet, int size, int * offset, avdtp_sbc_codec_header_t * sbc_header){ 649 int sbc_header_len = 12; // without crc 650 int pos = *offset; 651 652 if (size - pos < sbc_header_len){ 653 printf("Not enough data to read SBC header, expected %d, received %d\n", sbc_header_len, size-pos); 654 return 1; 655 } 656 657 sbc_header->fragmentation = get_bit16(packet[pos], 7); 658 sbc_header->starting_packet = get_bit16(packet[pos], 6); 659 sbc_header->last_packet = get_bit16(packet[pos], 5); 660 sbc_header->num_frames = packet[pos] & 0x0f; 661 pos++; 662 // 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); 663 *offset = pos; 664 return 0; 665 } 666 667 static int read_media_data_header(uint8_t *packet, int size, int *offset, avdtp_media_packet_header_t *media_header){ 668 int media_header_len = 12; // without crc 669 int pos = *offset; 670 671 if (size - pos < media_header_len){ 672 printf("Not enough data to read media packet header, expected %d, received %d\n", media_header_len, size-pos); 673 return 1; 674 } 675 676 media_header->version = packet[pos] & 0x03; 677 media_header->padding = get_bit16(packet[pos],2); 678 media_header->extension = get_bit16(packet[pos],3); 679 media_header->csrc_count = (packet[pos] >> 4) & 0x0F; 680 pos++; 681 682 media_header->marker = get_bit16(packet[pos],0); 683 media_header->payload_type = (packet[pos] >> 1) & 0x7F; 684 pos++; 685 686 media_header->sequence_number = big_endian_read_16(packet, pos); 687 pos+=2; 688 689 media_header->timestamp = big_endian_read_32(packet, pos); 690 pos+=4; 691 692 media_header->synchronization_source = big_endian_read_32(packet, pos); 693 pos+=4; 694 *offset = pos; 695 // TODO: read csrc list 696 697 // printf_hexdump( packet, pos ); 698 // printf("MEDIA HEADER: %u timestamp, version %u, padding %u, extension %u, csrc_count %u\n", 699 // media_header->timestamp, media_header->version, media_header->padding, media_header->extension, media_header->csrc_count); 700 // printf("MEDIA HEADER: marker %02x, payload_type %02x, sequence_number %u, synchronization_source %u\n", 701 // media_header->marker, media_header->payload_type, media_header->sequence_number, media_header->synchronization_source); 702 return 0; 703 } 704 705 static void dump_sbc_configuration(avdtp_media_codec_configuration_sbc_t configuration){ 706 printf("Received SBC configuration:\n"); 707 printf(" - num_channels: %d\n", configuration.num_channels); 708 printf(" - sampling_frequency: %d\n", configuration.sampling_frequency); 709 printf(" - channel_mode: %d\n", configuration.channel_mode); 710 printf(" - block_length: %d\n", configuration.block_length); 711 printf(" - subbands: %d\n", configuration.subbands); 712 printf(" - allocation_method: %d\n", configuration.allocation_method); 713 printf(" - bitpool_value [%d, %d] \n", configuration.min_bitpool_value, configuration.max_bitpool_value); 714 printf("\n"); 715 } 716 717 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 718 UNUSED(channel); 719 UNUSED(size); 720 uint16_t local_cid; 721 uint8_t status = 0xFF; 722 bd_addr_t adress; 723 724 if (packet_type != HCI_EVENT_PACKET) return; 725 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 726 switch (packet[2]){ 727 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 728 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 729 if (avrcp_cid != 0 && avrcp_cid != local_cid) { 730 printf("AVRCP demo: Connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", avrcp_cid, local_cid); 731 return; 732 } 733 734 status = avrcp_subevent_connection_established_get_status(packet); 735 if (status != ERROR_CODE_SUCCESS){ 736 printf("AVRCP demo: Connection failed: status 0x%02x\n", status); 737 avrcp_cid = 0; 738 return; 739 } 740 741 avrcp_cid = local_cid; 742 avrcp_connected = 1; 743 avrcp_subevent_connection_established_get_bd_addr(packet, adress); 744 printf("AVRCP demo: Channel successfully opened: %s, avrcp_cid 0x%02x\n", bd_addr_to_str(adress), avrcp_cid); 745 746 // automatically enable notifications 747 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 748 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 749 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED); 750 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED); 751 return; 752 } 753 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 754 printf("AVRCP demo: Channel released: avrcp_cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 755 avrcp_cid = 0; 756 avrcp_connected = 0; 757 return; 758 default: 759 break; 760 } 761 762 status = packet[5]; 763 if (!avrcp_cid) return; 764 765 // ignore INTERIM status 766 if (status == AVRCP_CTYPE_RESPONSE_INTERIM) return; 767 768 printf("AVRCP demo: command status: %s, ", avrcp_ctype2str(status)); 769 switch (packet[2]){ 770 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED: 771 printf("notification, playback status changed %s\n", avrcp_play_status2str(avrcp_subevent_notification_playback_status_changed_get_play_status(packet))); 772 return; 773 case AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED: 774 printf("notification, playing content changed\n"); 775 return; 776 case AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED: 777 printf("notification track changed\n"); 778 return; 779 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 780 printf("notification absolute volume changed %d\n", avrcp_subevent_notification_volume_changed_get_absolute_volume(packet)); 781 return; 782 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 783 printf("notification changed\n"); 784 return; 785 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 786 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 787 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 788 printf("%s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 789 break; 790 } 791 case AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO: 792 if (avrcp_subevent_now_playing_title_info_get_value_len(packet) > 0){ 793 memcpy(value, avrcp_subevent_now_playing_title_info_get_value(packet), avrcp_subevent_now_playing_title_info_get_value_len(packet)); 794 printf(" Title: %s\n", value); 795 } 796 break; 797 798 case AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO: 799 if (avrcp_subevent_now_playing_artist_info_get_value_len(packet) > 0){ 800 memcpy(value, avrcp_subevent_now_playing_artist_info_get_value(packet), avrcp_subevent_now_playing_artist_info_get_value_len(packet)); 801 printf(" Artist: %s\n", value); 802 } 803 break; 804 805 case AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO: 806 if (avrcp_subevent_now_playing_album_info_get_value_len(packet) > 0){ 807 memcpy(value, avrcp_subevent_now_playing_album_info_get_value(packet), avrcp_subevent_now_playing_album_info_get_value_len(packet)); 808 printf(" Album: %s\n", value); 809 } 810 break; 811 812 case AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO: 813 if (avrcp_subevent_now_playing_genre_info_get_value_len(packet) > 0){ 814 memcpy(value, avrcp_subevent_now_playing_genre_info_get_value(packet), avrcp_subevent_now_playing_genre_info_get_value_len(packet)); 815 printf(" Genre: %s\n", value); 816 } 817 break; 818 819 case AVRCP_SUBEVENT_PLAY_STATUS: 820 printf("song length: %d ms, song position: %d ms, play status: %s\n", 821 avrcp_subevent_play_status_get_song_length(packet), 822 avrcp_subevent_play_status_get_song_position(packet), 823 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 824 break; 825 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 826 printf("operation done %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 827 break; 828 case AVRCP_SUBEVENT_OPERATION_START: 829 printf("operation start %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 830 break; 831 case AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE: 832 // response to set shuffle and repeat mode 833 printf("\n"); 834 break; 835 default: 836 printf("AVRCP demo: event is not parsed\n"); 837 break; 838 } 839 } 840 841 static void a2dp_sink_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 842 UNUSED(channel); 843 UNUSED(size); 844 uint16_t cid; 845 bd_addr_t address; 846 uint8_t status; 847 848 if (packet_type != HCI_EVENT_PACKET) return; 849 if (hci_event_packet_get_type(packet) != HCI_EVENT_A2DP_META) return; 850 851 switch (packet[2]){ 852 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 853 printf("A2DP Sink demo: received non SBC codec. not implemented.\n"); 854 break; 855 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 856 printf("A2DP Sink demo: received SBC codec configuration.\n"); 857 sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 858 sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 859 sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 860 sbc_configuration.channel_mode = a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet); 861 sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 862 sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 863 sbc_configuration.allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 864 sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 865 sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 866 sbc_configuration.frames_per_buffer = sbc_configuration.subbands * sbc_configuration.block_length; 867 dump_sbc_configuration(sbc_configuration); 868 869 if (sbc_configuration.reconfigure){ 870 media_processing_close(); 871 } 872 // prepare media processing 873 media_processing_init(sbc_configuration); 874 break; 875 } 876 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 877 a2dp_subevent_stream_established_get_bd_addr(packet, address); 878 status = a2dp_subevent_stream_established_get_status(packet); 879 cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 880 printf("A2DP_SUBEVENT_STREAM_ESTABLISHED %d, %d \n", cid, a2dp_cid); 881 if (!a2dp_cid){ 882 // incoming connection 883 a2dp_cid = cid; 884 } else if (cid != a2dp_cid) { 885 break; 886 } 887 if (status){ 888 a2dp_sink_connected = 0; 889 printf("A2DP Sink demo: streaming connection failed, status 0x%02x\n", status); 890 break; 891 } 892 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); 893 894 memcpy(device_addr, address, 6); 895 local_seid = a2dp_subevent_stream_established_get_local_seid(packet); 896 a2dp_sink_connected = 1; 897 break; 898 899 case A2DP_SUBEVENT_STREAM_STARTED: 900 cid = a2dp_subevent_stream_started_get_a2dp_cid(packet); 901 if (cid != a2dp_cid) break; 902 local_seid = a2dp_subevent_stream_started_get_local_seid(packet); 903 printf("A2DP Sink demo: stream started, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 904 // started 905 media_processing_init(sbc_configuration); 906 break; 907 908 case A2DP_SUBEVENT_STREAM_SUSPENDED: 909 cid = a2dp_subevent_stream_suspended_get_a2dp_cid(packet); 910 if (cid != a2dp_cid) break; 911 local_seid = a2dp_subevent_stream_suspended_get_local_seid(packet); 912 printf("A2DP Sink demo: stream paused, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 913 media_processing_close(); 914 break; 915 916 case A2DP_SUBEVENT_STREAM_RELEASED: 917 cid = a2dp_subevent_stream_released_get_a2dp_cid(packet); 918 if (cid != a2dp_cid) { 919 printf("A2DP Sink demo: unexpected cid 0x%02x instead of 0x%02x\n", cid, a2dp_cid); 920 break; 921 } 922 local_seid = a2dp_subevent_stream_released_get_local_seid(packet); 923 printf("A2DP Sink demo: stream released, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 924 media_processing_close(); 925 break; 926 case A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 927 cid = a2dp_subevent_signaling_connection_released_get_a2dp_cid(packet); 928 if (cid != a2dp_cid) { 929 printf("A2DP Sink demo: unexpected cid 0x%02x instead of 0x%02x\n", cid, a2dp_cid); 930 break; 931 } 932 a2dp_sink_connected = 0; 933 printf("A2DP Sink demo: signaling connection released\n"); 934 break; 935 default: 936 printf("A2DP Sink demo: not parsed 0x%02x\n", packet[2]); 937 break; 938 } 939 } 940 941 #ifdef HAVE_BTSTACK_STDIN 942 static void show_usage(void){ 943 bd_addr_t iut_address; 944 gap_local_bd_addr(iut_address); 945 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 946 printf("b - AVDTP Sink create connection to addr %s\n", bd_addr_to_str(device_addr)); 947 printf("B - AVDTP Sink disconnect\n"); 948 printf("c - AVRCP create connection to addr %s\n", bd_addr_to_str(device_addr)); 949 printf("C - AVRCP disconnect\n"); 950 951 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 952 printf("O - get play status\n"); 953 printf("j - get now playing info\n"); 954 printf("k - play\n"); 955 printf("K - stop\n"); 956 printf("L - pause\n"); 957 printf("u - start fast forward\n"); 958 printf("U - stop fast forward\n"); 959 printf("n - start rewind\n"); 960 printf("N - stop rewind\n"); 961 printf("i - forward\n"); 962 printf("I - backward\n"); 963 printf("t - volume up\n"); 964 printf("T - volume down\n"); 965 printf("p - absolute volume of 50 percent\n"); 966 printf("M - mute\n"); 967 printf("r - skip\n"); 968 printf("q - query repeat and shuffle mode\n"); 969 printf("v - repeat single track\n"); 970 printf("x - repeat all tracks\n"); 971 printf("X - disable repeat mode\n"); 972 printf("z - shuffle all tracks\n"); 973 printf("Z - disable shuffle mode\n"); 974 printf("---\n"); 975 } 976 #endif 977 978 #ifdef HAVE_BTSTACK_STDIN 979 static void stdin_process(char cmd){ 980 uint8_t status = ERROR_CODE_SUCCESS; 981 printf("stdin_process \n"); 982 if (!avrcp_connected){ 983 switch (cmd){ 984 case 'b': 985 case 'B': 986 case 'c': 987 break; 988 default: 989 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)); 990 return; 991 } 992 993 } 994 995 switch (cmd){ 996 case 'b': 997 status = a2dp_sink_establish_stream(device_addr, local_seid, &a2dp_cid); 998 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); 999 break; 1000 case 'B': 1001 printf(" - AVDTP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 1002 status = avdtp_sink_disconnect(a2dp_cid); 1003 break; 1004 case 'c': 1005 printf(" - Create AVRCP connection to addr %s.\n", bd_addr_to_str(device_addr)); 1006 status = avrcp_controller_connect(device_addr, &avrcp_cid); 1007 break; 1008 case 'C': 1009 printf(" - AVRCP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 1010 status = avrcp_controller_disconnect(avrcp_cid); 1011 break; 1012 1013 case '\n': 1014 case '\r': 1015 break; 1016 case 'O': 1017 printf(" - get play status\n"); 1018 status = avrcp_controller_get_play_status(avrcp_cid); 1019 break; 1020 case 'j': 1021 printf(" - get now playing info\n"); 1022 status = avrcp_controller_get_now_playing_info(avrcp_cid); 1023 break; 1024 case 'k': 1025 printf(" - play\n"); 1026 status = avrcp_controller_play(avrcp_cid); 1027 break; 1028 case 'K': 1029 printf(" - stop\n"); 1030 status = avrcp_controller_stop(avrcp_cid); 1031 break; 1032 case 'L': 1033 printf(" - pause\n"); 1034 status = avrcp_controller_pause(avrcp_cid); 1035 break; 1036 case 'u': 1037 printf(" - start fast forward\n"); 1038 status = avrcp_controller_start_fast_forward(avrcp_cid); 1039 break; 1040 case 'U': 1041 printf(" - stop fast forward\n"); 1042 status = avrcp_controller_stop_fast_forward(avrcp_cid); 1043 break; 1044 case 'n': 1045 printf(" - start rewind\n"); 1046 status = avrcp_controller_start_rewind(avrcp_cid); 1047 break; 1048 case 'N': 1049 printf(" - stop rewind\n"); 1050 status = avrcp_controller_stop_rewind(avrcp_cid); 1051 break; 1052 case 'i': 1053 printf(" - forward\n"); 1054 status = avrcp_controller_forward(avrcp_cid); 1055 break; 1056 case 'I': 1057 printf(" - backward\n"); 1058 status = avrcp_controller_backward(avrcp_cid); 1059 break; 1060 case 't': 1061 printf(" - volume up\n"); 1062 status = avrcp_controller_volume_up(avrcp_cid); 1063 break; 1064 case 'T': 1065 printf(" - volume down\n"); 1066 status = avrcp_controller_volume_down(avrcp_cid); 1067 break; 1068 case 'p': 1069 printf(" - absolute volume of 50 percent\n"); 1070 status = avrcp_controller_set_absolute_volume(avrcp_cid, 50); 1071 break; 1072 case 'M': 1073 printf(" - mute\n"); 1074 status = avrcp_controller_mute(avrcp_cid); 1075 break; 1076 case 'r': 1077 printf(" - skip\n"); 1078 status = avrcp_controller_skip(avrcp_cid); 1079 break; 1080 case 'q': 1081 printf(" - query repeat and shuffle mode\n"); 1082 status = avrcp_controller_query_shuffle_and_repeat_modes(avrcp_cid); 1083 break; 1084 case 'v': 1085 printf(" - repeat single track\n"); 1086 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 1087 break; 1088 case 'x': 1089 printf(" - repeat all tracks\n"); 1090 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 1091 break; 1092 case 'X': 1093 printf(" - disable repeat mode\n"); 1094 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_OFF); 1095 break; 1096 case 'z': 1097 printf(" - shuffle all tracks\n"); 1098 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 1099 break; 1100 case 'Z': 1101 printf(" - disable shuffle mode\n"); 1102 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_OFF); 1103 break; 1104 default: 1105 show_usage(); 1106 return; 1107 } 1108 if (status != ERROR_CODE_SUCCESS){ 1109 printf("Could not perform command, status 0x%2x\n", status); 1110 } 1111 } 1112 #endif 1113 1114 int btstack_main(int argc, const char * argv[]); 1115 int btstack_main(int argc, const char * argv[]){ 1116 (void)argc; 1117 (void)argv; 1118 1119 int err = a2dp_sink_and_avrcp_services_init(); 1120 if (err) return err; 1121 // turn on! 1122 printf("Starting BTstack ...\n"); 1123 hci_power_control(HCI_POWER_ON); 1124 return 0; 1125 } 1126 /* EXAMPLE_END */ 1127