1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004
extern crate libc; use std::ffi::c_void; /// Low-level wrappers for AAudio API. pub enum AAudioStream {} pub enum AAudioStreamBuilder {} /// This is used to represent a value that has not been specified. /// For example, an application could use `UNSPECIFIED` to indicate /// that is did not not care what the specific value of a parameter was /// and would accept whatever it was given. pub const UNSPECIFIED: i32 = 0; pub const SESSION_ID_NONE: i32 = -1; pub const SESSION_ID_ALLOCATE: i32 = 0; pub const DIRECTION_OUTPUT: i32 = 0; pub const DIRECTION_INPUT: i32 = 0; pub const FORMAT_INVALID: i32 = -1; pub const FORMAT_PCM_I16: i32 = 1; pub const FORMAT_PCM_FLOAT: i32 = 2; pub const SHARING_EXCLUSIVE: i32 = 0; pub const SHARING_SHARED: i32 = 1; pub const USAGE_MEDIA: i32 = 1; pub const USAGE_VOICE_COMMUNICATION: i32 = 2; pub const USAGE_VOICE_COMMUNICATION_SIGNALLING: i32 = 3; pub const USAGE_ALARM: i32 = 4; pub const USAGE_NOTIFICATION: i32 = 5; pub const USAGE_NOTIFICATION_RINGTONE: i32 = 6; pub const USAGE_NOTIFICATION_EVENT: i32 = 10; pub const USAGE_ASSISTANCE_ACCESSIBILITY: i32 = 11; pub const USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: i32 = 12; pub const USAGE_ASSISTANCE_SONIFICATION: i32 = 13; pub const USAGE_GAME: i32 = 14; pub const USAGE_ASSISTANT: i32 = 16; pub const USAGE_EMERGENCY: i32 = 1000; pub const USAGE_SAFETY: i32 = 1001; pub const USAGE_VEHICLE_STATUS: i32 = 1002; pub const USAGE_ANNOUNCEMENT: i32 = 1003; pub const INPUT_PRESET_GENERIC: i32 = 1; pub const INPUT_PRESET_CAMCORDER: i32 = 5; pub const INPUT_PRESET_VOICE_RECOGNITION: i32 = 6; pub const INPUT_PRESET_VOICE_COMMUNICATION: i32 = 7; pub const INPUT_PRESET_UNPROCESSED: i32 = 9; pub const INPUT_PRESET_VOICE_PERFORMANCE: i32 = 10; pub const CONTENT_TYPE_SPEECH: i32 = 1; pub const CONTENT_TYPE_MUSIC: i32 = 2; pub const CONTENT_TYPE_MOVIE: i32 = 3; pub const CONTENT_TYPE_SONIFICATION: i32 = 4; pub const ALLOW_CAPTURE_BY_ALL: i32 = 1; pub const ALLOW_CAPTURE_BY_SYSTEM: i32 = 2; pub const ALLOW_CAPTURE_BY_NONE: i32 = 3; pub const CALLBACK_CONTINUE: i32 = 0; pub const CALLBACK_STOP: i32 = 1; pub const PERFORMANCE_MODE_NONE: i32 = 10; pub const PERFORMANCE_MODE_POWER_SAVING: i32 = 11; pub const PERFORMANCE_MODE_LOW_LATENCY: i32 = 12; pub const STREAM_STATE_UNINITIALIZED: i32 = 0; pub const STREAM_STATE_UNKNOWN: i32 = 1; pub const STREAM_STATE_OPEN: i32 = 2; pub const STREAM_STATE_STARTING: i32 = 3; pub const STREAM_STATE_STARTED: i32 = 4; pub const STREAM_STATE_PAUSING: i32 = 5; pub const STREAM_STATE_PAUSED: i32 = 6; pub const STREAM_STATE_FLUSHING: i32 = 7; pub const STREAM_STATE_FLUSHED: i32 = 8; pub const STREAM_STATE_STOPPING: i32 = 9; pub const STREAM_STATE_STOPPED: i32 = 10; pub const STREAM_STATE_CLOSING: i32 = 11; pub const STREAM_STATE_CLOSED: i32 = 12; pub const STREAM_STATE_DISCONNECTED: i32 = 13; pub const OK: i32 = 0; const ERROR_BASE: i32 = -900; /// The audio device was disconnected. This could occur, for example, when headphones /// are plugged in or unplugged. The stream cannot be used after the device is disconnected. /// Applications should stop and close the stream. /// If this error is received in an error callback then another thread should be /// used to stop and close the stream. pub const ERROR_DISCONNECTED: i32 = ERROR_BASE + 1; /// An invalid parameter was passed to AAudio. pub const ERROR_ILLEGAL_ARGUMENT: i32 = ERROR_BASE + 2; pub const ERROR_INTERNAL: i32 = ERROR_ILLEGAL_ARGUMENT + 2; /// The requested operation is not appropriate for the current state of AAudio. pub const ERROR_INVALID_STATE: i32 = ERROR_INTERNAL + 1; /// The server rejected the handle used to identify the stream. pub const ERROR_INVALID_HANDLE: i32 = ERROR_INVALID_STATE + 3; /// The function is not implemented for this stream. pub const ERROR_UNIMPLEMENTED: i32 = ERROR_INVALID_HANDLE + 2; /// A resource or information is unavailable. /// This could occur when an application tries to open too many streams, /// or a timestamp is not available. pub const ERROR_UNAVAILABLE: i32 = ERROR_UNIMPLEMENTED + 1; pub const ERROR_NO_FREE_HANDLES: i32 = ERROR_UNIMPLEMENTED + 2; /// Memory could not be allocated. pub const ERROR_NO_MEMORY: i32 = ERROR_UNIMPLEMENTED + 3; /// A NULL pointer was passed to AAudio. /// Or a NULL pointer was detected internally. pub const ERROR_NULL: i32 = ERROR_UNIMPLEMENTED + 4; /// An operation took longer than expected. pub const ERROR_TIMEOUT: i32 = ERROR_UNIMPLEMENTED + 5; pub const ERROR_WOULD_BLOCK: i32 = ERROR_UNIMPLEMENTED + 6; /// The requested data format is not supported. pub const ERROR_INVALID_FORMAT: i32 = ERROR_UNIMPLEMENTED + 7; /// A requested was out of range. pub const ERROR_OUT_OF_RANGE: i32 = ERROR_UNIMPLEMENTED + 8; /// The audio service was not available. pub const ERROR_NO_SERVICE: i32 = ERROR_UNIMPLEMENTED + 9; /// The requested sample rate was not supported. pub const ERROR_INVALID_RATE: i32 = ERROR_UNIMPLEMENTED + 10; /// Prototype for the data function that is passed to AAudioStreamBuilder_setDataCallback(). /// /// For an output stream, this function should render and write numFrames of data /// in the streams current data format to the audioData buffer. /// /// For an input stream, this function should read and process numFrames of data /// from the audioData buffer. /// /// The audio data is passed through the buffer. So do NOT call AAudioStream_read() or /// AAudioStream_write() on the stream that is making the callback. /// /// Note that numFrames can vary unless AAudioStreamBuilder_setFramesPerDataCallback() /// is called. /// /// Also note that this callback function should be considered a "real-time" function. /// It must not do anything that could cause an unbounded delay because that can cause the /// audio to glitch or pop. /// /// These are things the function should NOT do: /// * allocate memory using, for example, malloc() or new /// * any file operations such as opening, closing, reading or writing /// * any network operations such as streaming /// * use any mutexes or other synchronization primitives /// * sleep /// * stop or close the stream /// * AAudioStream_read() /// * AAudioStream_write() /// /// The following are OK to call from the data callback: /// * `AAudioStream_get*()` /// * AAudio_convertResultToText() /// /// If you need to move data, eg. MIDI commands, in or out of the callback function then /// we recommend the use of non-blocking techniques such as an atomic FIFO. /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() /// * `user_data` - the same address that was passed to AAudioStreamBuilder_setCallback() /// * `audio_data` - a pointer to the audio data /// * `num_frames` - the number of frames to be processed, which can vary /// /// Returns CallbackResult (Continue = 0, Stop = 1) pub type DataCallback = Option< unsafe extern "C" fn( stream: *mut AAudioStream, user_data: *mut c_void, audio_data: *mut c_void, num_frames: i32, ) -> i32, >; /// Prototype for the callback function that is passed to /// AAudioStreamBuilder_setErrorCallback(). /// /// The following may NOT be called from the error callback: /// * AAudioStream_requestStop() /// * AAudioStream_requestPause() /// * AAudioStream_close() /// * AAudioStream_waitForStateChange() /// * AAudioStream_read() /// * AAudioStream_write() /// /// The following are OK to call from the error callback: /// * AAudioStream_get*() /// * AAudio_convertResultToText() /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() /// * `user_data` - the same address that was passed to AAudioStreamBuilder_setErrorCallback() /// * `error` - an AAUDIO_ERROR_* value. pub type ErrorCallback = Option<unsafe extern "C" fn(stream: *mut AAudioStream, user_data: *mut c_void, error: i32)>; #[link(name = "aaudio")] extern "C" { /// Create a StreamBuilder that can be used to open a Stream. /// /// The deviceId is initially unspecified, meaning that the current default device will be used. /// /// The default direction is `DIRECTION_OUTPUT`. /// The default sharing mode is `SHARING_MODE_SHARED`. /// The data format, samplesPerFrames and sampleRate are unspecified and will be /// chosen by the device when it is opened. /// /// AAudioStreamBuilder_delete() must be called when you are done using the builder. /// /// Available since API level 26. pub fn AAudio_createStreamBuilder(builder: *mut *mut AAudioStreamBuilder) -> i32; /// Request an audio device identified device using an ID. /// On Android, for example, the ID could be obtained from the Java AudioManager. /// /// The default, if you do not call this function, is `UNSPECIFIED`, /// in which case the primary device will be used. /// /// Available since API level 26. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `device_id` - device identifier or `UNSPECIFIED` pub fn AAudioStreamBuilder_setDeviceId(builder: *mut AAudioStreamBuilder, device_id: i32); /// Request a sample rate in Hertz. /// /// The default, if you do not call this function, is `UNSPECIFIED`. /// An optimal value will then be chosen when the stream is opened. /// After opening a stream with an unspecified value, the application must /// query for the actual value, which may vary by device. /// /// If an exact value is specified then an opened stream will use that value. /// If a stream cannot be opened with the specified value then the open will fail. /// /// Available since API level 26. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `sample_rate` - frames per second. Common rates include 44100 and 48000 Hz. pub fn AAudioStreamBuilder_setSampleRate(builder: *mut AAudioStreamBuilder, sample_rate: i32); /// Request a number of channels for the stream. /// /// The default, if you do not call this function, is AAUDIO_UNSPECIFIED. /// An optimal value will then be chosen when the stream is opened. /// After opening a stream with an unspecified value, the application must /// query for the actual value, which may vary by device. /// /// If an exact value is specified then an opened stream will use that value. /// If a stream cannot be opened with the specified value then the open will fail. /// /// Available since API level 26. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `channel_count` - Number of channels desired. pub fn AAudioStreamBuilder_setChannelCount( builder: *mut AAudioStreamBuilder, channel_count: i32, ); /// Request a sample data format, for example `FORMAT_PCM_I16`. /// /// The default, if you do not call this function, is `UNSPECIFIED`. /// An optimal value will then be chosen when the stream is opened. /// After opening a stream with an unspecified value, the application must /// query for the actual value, which may vary by device. /// /// If an exact value is specified then an opened stream will use that value. /// If a stream cannot be opened with the specified value then the open will fail. /// /// Available since API level 26. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `format` - the sample data format. pub fn AAudioStreamBuilder_setFormat(builder: *mut AAudioStreamBuilder, format: i32); /// Request a mode for sharing the device. /// /// The default, if you do not call this function, is `SHARING_MODE_SHARED`. /// /// The requested sharing mode may not be available. /// The application can query for the actual mode after the stream is opened. /// /// Available since API level 26. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `sharing_mode` - `SHARING_MODE_SHARED` or `SHARING_MODE_EXCLUSIVE` pub fn AAudioStreamBuilder_setSharingMode(builder: *mut AAudioStreamBuilder, sharing_mode: i32); /// Request the direction for a stream. /// /// The default, if you do not call this function, is Output. /// /// Available since API level 26. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `direction` - `DIRECTION_OUTPUT` or `DIRECTION_INPUT` pub fn AAudioStreamBuilder_setDirection(builder: *mut AAudioStreamBuilder, direction: i32); /// Set the requested buffer capacity in frames. /// The final AAudioStream capacity may differ, but will probably be at least this big. /// /// The default, if you do not call this function, is `UNSPECIFIED`. /// /// Available since API level 26. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `numFrames` - the desired buffer capacity in frames or `UNSPECIFIED` pub fn AAudioStreamBuilder_setBufferCapacityInFrames( builder: *mut AAudioStreamBuilder, num_frames: i32, ); /// Set the requested performance mode. /// /// Supported modes are None, PowerSaving and LowLatency. /// /// The default, if you do not call this function, is None. /// /// You may not get the mode you requested. /// You can call AAudioStream_getPerformanceMode() /// to find out the final mode for the stream. /// /// Available since API level 26. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `mode` - the desired performance mode, eg. LowLatency pub fn AAudioStreamBuilder_setPerformanceMode(builder: *mut AAudioStreamBuilder, mode: i32); /// Set the intended use case for the stream. /// /// The AAudio system will use this information to optimize the /// behavior of the stream. /// This could, for example, affect how volume and focus is handled for the stream. /// /// The default, if you do not call this function, is Media. /// /// Available since API level 28. /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `usage` - the desired usage, eg. Game pub fn AAudioStreamBuilder_setUsage(builder: *mut AAudioStreamBuilder, usage: i32); /// Set the type of audio data that the stream will carry. /// /// The AAudio system will use this information to optimize the /// behavior of the stream. /// This could, for example, affect whether a stream is paused when a notification occurs. /// /// The default, if you do not call this function, is Music. /// /// Available since API level 28. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `content_type` - the type of audio data, eg. Speech pub fn AAudioStreamBuilder_setContentType(builder: *mut AAudioStreamBuilder, content_type: i32); /// Set the input (capture) preset for the stream. /// /// The AAudio system will use this information to optimize the /// behavior of the stream. /// This could, for example, affect which microphones are used and how the /// recorded data is processed. /// /// The default, if you do not call this function, is VoiceRecognition. /// That is because VoiceRecognition is the preset with the lowest latency /// on many platforms. /// /// Available since API level 28. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `input_preset` - the desired configuration for recording pub fn AAudioStreamBuilder_setInputPreset(builder: *mut AAudioStreamBuilder, input_preset: i32); /// Specify whether this stream audio may or may not be captured by other apps or the system. /// /// The default is AllowCaptureByAll. /// /// Note that an application can also set its global policy, in which case the most restrictive /// policy is always applied. See android.media.AudioAttributes#setAllowedCapturePolicy(int) /// /// Available since API level 29. /// /// `builder` - reference provided by AAudio_createStreamBuilder() /// `capturePolicy` - the desired level of opt-out from being captured. pub fn AAudioStreamBuilder_setAllowedCapturePolicy( builder: *mut AAudioStreamBuilder, capture_policy: i32, ); /// The session ID can be used to associate a stream with effects processors. /// The effects are controlled using the Android AudioEffect Java API. /// /// The default, if you do not call this function, is `SESSION_ID_NONE`. /// /// If set to `SESSION_ID_ALLOCATE` then a session ID will be allocated /// when the stream is opened. /// /// The allocated session ID can be obtained by calling AAudioStream_getSessionId() /// and then used with this function when opening another stream. /// This allows effects to be shared between streams. /// /// Session IDs from AAudio can be used with the Android Java APIs and vice versa. /// So a session ID from an AAudio stream can be passed to Java /// and effects applied using the Java AudioEffect API. /// /// Note that allocating or setting a session ID may result in a stream with higher latency. /// /// Allocated session IDs will always be positive and nonzero. /// /// Available since API level 28. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `session_id` - an allocated sessionID or `SESSION_ID_ALLOCATE` pub fn AAudioStreamBuilder_setSessionId(builder: *mut AAudioStreamBuilder, session_id: i32); /// Indicates whether this input stream must be marked as privacy sensitive or not. /// /// When true, this input stream is privacy sensitive and any concurrent capture /// is not permitted. /// /// This is off (false) by default except when the input preset is `VoiceCommunication` /// or `Camcorder`. /// /// Always takes precedence over default from input preset when set explicitly. /// /// Only relevant if the stream direction is `Input`. /// /// Added in API level 30. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `privacy_sensitive` - true if capture from this stream must be marked as privacy sensitive, false otherwise. pub fn AAudioStreamBuilder_setPrivacySensitive( builder: *mut AAudioStreamBuilder, privacy_sensitive: bool, ); /// Request that AAudio call this functions when the stream is running. /// /// Note that when using this callback, the audio data will be passed in or out /// of the function as an argument. /// So you cannot call AAudioStream_write() or AAudioStream_read() /// on the same stream that has an active data callback. /// /// The callback function will start being called after AAudioStream_requestStart() /// is called. /// It will stop being called after AAudioStream_requestPause() or /// AAudioStream_requestStop() is called. /// /// This callback function will be called on a real-time thread owned by AAudio. See /// `DataCallback` for more information. /// /// Note that the AAudio callbacks will never be called simultaneously from multiple threads. /// /// Available since API level 26. /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `callback` - pointer to a function that will process audio data. /// * `user_data` - pointer to an application data structure that will be passed /// to the callback functions. pub fn AAudioStreamBuilder_setDataCallback( builder: *mut AAudioStreamBuilder, callback: DataCallback, user_data: *mut c_void, ); /// Set the requested data callback buffer size in frames. /// See `DataCallback`. /// /// The default, if you do not call this function, is `Unspecified`. /// /// For the lowest possible latency, do not call this function. AAudio will then /// call the dataProc callback function with whatever size is optimal. /// That size may vary from one callback to another. /// /// Only use this function if the application requires a specific number of frames for processing. /// The application might, for example, be using an FFT that requires /// a specific power-of-two sized buffer. /// /// AAudio may need to add additional buffering in order to adapt between the internal /// buffer size and the requested buffer size. /// /// If you do call this function then the requested size should be less than /// half the buffer capacity, to allow double buffering. /// /// Available since API level 26. /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `num_frames` - the desired buffer size in frames or `Unspecified` pub fn AAudioStreamBuilder_setFramesPerDataCallback( builder: *mut AAudioStreamBuilder, num_frames: i32, ); /// Request that AAudio call this function if any error occurs or the stream is disconnected. /// /// It will be called, for example, if a headset or a USB device is unplugged causing the stream's /// device to be unavailable or "disconnected". /// Another possible cause of error would be a timeout or an unanticipated internal error. /// /// In response, this function should signal or create another thread to stop /// and close this stream. The other thread could then reopen a stream on another device. /// Do not stop or close the stream, or reopen the new stream, directly from this callback. /// /// This callback will not be called because of actions by the application, such as stopping /// or closing a stream. /// /// Note that the AAudio callbacks will never be called simultaneously from multiple threads. /// /// Available since API level 26. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `callback` - pointer to a function that will be called if an error occurs. /// * `user_data` - pointer to an application data structure that will be passed /// to the callback functions. pub fn AAudioStreamBuilder_setErrorCallback( builder: *mut AAudioStreamBuilder, callback: ErrorCallback, user_data: *mut c_void, ); /// Open a stream based on the options in the StreamBuilder. /// Returns 0 for OK or a negative error. /// /// AAudioStream_close() must be called when finished with the stream to recover /// the memory and to free the associated resources. /// /// Available since API level 26. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// * `stream` - pointer to a variable to receive the new stream reference pub fn AAudioStreamBuilder_openStream( builder: *mut AAudioStreamBuilder, stream: *mut *mut AAudioStream, ) -> i32; /// Delete the resources associated with the StreamBuilder. /// Returns 0 for OK or a negative error. /// /// Available since API level 26. /// /// # Arguments /// /// * `builder` - reference provided by AAudio_createStreamBuilder() /// @return 0 for OK or a negative error. pub fn AAudioStreamBuilder_delete(builder: *mut AAudioStreamBuilder) -> i32; /// Free the audio resources associated with a stream created by /// AAudioStreamBuilder_openStream(). /// AAudioStream_close() should be called at some point after calling /// this function. /// /// Returns 0 for OK or a negative error. /// /// After this call, the stream will be in Closing state /// /// This function is useful if you want to release the audio resources immediately, /// but still allow queries to the stream to occur from other threads. This often /// happens if you are monitoring stream progress from a UI thread. /// /// Available since API level 30. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_release(stream: *mut AAudioStream) -> i32; /// Delete the internal data structures associated with the stream created /// by AAudioStreamBuilder_openStream(). /// /// Returns 0 for OK or a negative error. /// /// If AAudioStream_release() has not been called then it will be called automatically. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_close(stream: *mut AAudioStream) -> i32; /// Asynchronously request to start playing the stream. For output streams, one should /// write to the stream to fill the buffer before starting. /// Otherwise it will underflow. /// After this call the state will be in `Starting` or `Started`. /// /// Returns 0 for OK or a negative error. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_requestStart(stream: *mut AAudioStream) -> i32; /// Asynchronous request for the stream to pause. /// Pausing a stream will freeze the data flow but not flush any buffers. /// Use AAudioStream_requestStart() to resume playback after a pause. /// After this call the state will be in `Pausing` or /// `Paused`. /// /// Returns 0 for OK or a negative error. /// /// This will return `Unimplemented` for input streams. /// For input streams use AAudioStream_requestStop(). /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_requestPause(stream: *mut AAudioStream) -> i32; /// Asynchronous request for the stream to flush. /// Flushing will discard any pending data. /// This call only works if the stream is pausing or paused. /// Frame counters are not reset by a flush. They may be advanced. /// After this call the state will be in `Flushing` or `Flushed`. /// /// Returns 0 for OK or a negative error. /// /// This will return `Unimplemented` for input streams. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_requestFlush(stream: *mut AAudioStream) -> i32; /// Asynchronous request for the stream to stop. /// The stream will stop after all of the data currently buffered has been played. /// After this call the state will be in `Stopping` or `Stopped`. /// /// Returns 0 for OK or a negative error. /// /// Available since API level 26. /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_requestStop(stream: *mut AAudioStream) -> i32; /// Query the current state of the client, eg. `Pausing`. /// /// This function will immediately return the state without updating the state. /// If you want to update the client state based on the server state then /// call AAudioStream_waitForStateChange() with currentState /// set to `Unknown` and a zero timeout. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getState(stream: *mut AAudioStream) -> i32; /// Wait until the current state no longer matches the input state. /// /// Returns 0 for OK or a negative error. /// /// This will update the current client state. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - A reference provided by AAudioStreamBuilder_openStream() /// * `input_state` - The state we want to avoid. /// * `next_state` - Pointer to a variable that will be set to the new state. /// * `timeout_nanoseconds` - Maximum number of nanoseconds to wait for completion. pub fn AAudioStream_waitForStateChange( stream: *mut AAudioStream, input_state: i32, next_state: *mut i32, timeout_nanoseconds: i64, ) -> i32; /// Read data from the stream. /// Returns the number of frames actually read or a negative error. /// /// The call will wait until the read is complete or until it runs out of time. /// If timeoutNanos is zero then this call will not wait. /// /// Note that timeoutNanoseconds is a relative duration in wall clock time. /// Time will not stop if the thread is asleep. /// So it will be implemented using CLOCK_BOOTTIME. /// /// This call is "strong non-blocking" unless it has to wait for data. /// /// If the call times out then zero or a partial frame count will be returned. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - A stream created using AAudioStreamBuilder_openStream(). /// * `buffer` - The address of the first sample. /// * `num_frames` - Number of frames to read. Only complete frames will be written. /// * `timeout_nanoseconds` - Maximum number of nanoseconds to wait for completion. pub fn AAudioStream_read( stream: *mut AAudioStream, buffer: *mut c_void, num_frames: i32, timeout_nanoseconds: i64, ) -> i32; /// Write data to the stream. /// Returns the number of frames actually written or a negative error. /// /// The call will wait until the write is complete or until it runs out of time. /// If timeoutNanos is zero then this call will not wait. /// /// Note that timeoutNanoseconds is a relative duration in wall clock time. /// Time will not stop if the thread is asleep. /// So it will be implemented using CLOCK_BOOTTIME. /// /// This call is "strong non-blocking" unless it has to wait for room in the buffer. /// /// If the call times out then zero or a partial frame count will be returned. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - A stream created using AAudioStreamBuilder_openStream(). /// * `buffer` - The address of the first sample. /// * `num_frames` - Number of frames to write. Only complete frames will be written. /// * `timeout_nanoseconds` - Maximum number of nanoseconds to wait for completion. pub fn AAudioStream_write( stream: *mut AAudioStream, buffer: *const c_void, num_frames: i32, timeout_nanoseconds: i64, ) -> i32; /// This can be used to adjust the latency of the buffer by changing /// the threshold where blocking will occur. /// By combining this with AAudioStream_getXRunCount(), the latency can be tuned /// at run-time for each device. /// Returns actual buffer size in frames or a negative error. /// /// This cannot be set higher than AAudioStream_getBufferCapacityInFrames(). /// /// Note that you will probably not get the exact size you request. /// You can check the return value or call AAudioStream_getBufferSizeInFrames() /// to see what the actual final size is. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() /// * `num_frames` - requested number of frames that can be filled without blocking pub fn AAudioStream_setBufferSizeInFrames(stream: *mut AAudioStream, num_frames: i32) -> i32; /// Query the maximum number of frames that can be filled without blocking. /// /// Available since API level 26. /// /// Stream reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getBufferSizeInFrames(stream: *mut AAudioStream) -> i32; /// Query the number of frames that the application should read or write at /// one time for optimal performance. It is OK if an application writes /// a different number of frames. But the buffer size may need to be larger /// in order to avoid underruns or overruns. /// /// Note that this may or may not match the actual device burst size. /// For some endpoints, the burst size can vary dynamically. /// But these tend to be devices with high latency. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getFramesPerBurst(stream: *mut AAudioStream) -> i32; /// Query maximum buffer capacity in frames. /// /// Available since API level 26. /// /// # Arguments /// /// @param stream reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getBufferCapacityInFrames(stream: *mut AAudioStream) -> i32; /// Query the size of the buffer that will be passed to the dataProc callback /// in the numFrames parameter. /// /// This call can be used if the application needs to know the value of numFrames before /// the stream is started. This is not normally necessary. /// /// If a specific size was requested by calling /// AAudioStreamBuilder_setFramesPerDataCallback() then this will be the same size. /// /// If AAudioStreamBuilder_setFramesPerDataCallback() was not called then this will /// return the size chosen by AAudio, or `UNSPECIFIED`. /// /// `UNSPECIFIED` indicates that the callback buffer size for this stream /// may vary from one dataProc callback to the next. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getFramesPerDataCallback(stream: *mut AAudioStream) -> i32; /// An XRun is an Underrun or an Overrun. /// During playing, an underrun will occur if the stream is not written in time /// and the system runs out of valid data. /// During recording, an overrun will occur if the stream is not read in time /// and there is no place to put the incoming data so it is discarded. /// /// An underrun or overrun can cause an audible "pop" or "glitch". /// /// Note that some INPUT devices may not support this function. /// In that case a 0 will always be returned. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getXRunCount(stream: *mut AAudioStream) -> i32; /// Available since API level 26. /// Returns the actual sample rate. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getSampleRate(stream: *mut AAudioStream) -> i32; /// A stream has one or more channels of data. /// A frame will contain one sample for each channel. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getChannelCount(stream: *mut AAudioStream) -> i32; /// Available since API level 26. /// Returns the actual device ID. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getDeviceId(stream: *mut AAudioStream) -> i32; /// Available since API level 26. /// Returns the actual data format. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getFormat(stream: *mut AAudioStream) -> i32; /// Provide actual sharing mode. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getSharingMode(stream: *mut AAudioStream) -> i32; /// Get the performance mode used by the stream. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getPerformanceMode(stream: *mut AAudioStream) -> i32; /// Available since API level 26. /// /// # Arguments /// /// `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getDirection(stream: *mut AAudioStream) -> i32; /// Passes back the number of frames that have been written since the stream was created. /// For an output stream, this will be advanced by the application calling write() /// or by a data callback. /// For an input stream, this will be advanced by the endpoint. /// /// The frame position is monotonically increasing. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getFramesWritten(stream: *mut AAudioStream) -> i64; /// Passes back the number of frames that have been read since the stream was created. /// For an output stream, this will be advanced by the endpoint. /// For an input stream, this will be advanced by the application calling read() /// or by a data callback. /// /// The frame position is monotonically increasing. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getFramesRead(stream: *mut AAudioStream) -> i64; /// Passes back the session ID associated with this stream. /// /// The session ID can be used to associate a stream with effects processors. /// The effects are controlled using the Android AudioEffect Java API. /// /// If AAudioStreamBuilder_setSessionId() was called with `SESSION_ID_ALLOCATE` /// then a new session ID should be allocated once when the stream is opened. /// /// If AAudioStreamBuilder_setSessionId() was called with a previously allocated /// session ID then that value should be returned. /// /// If AAudioStreamBuilder_setSessionId() was not called then this function should /// return `SESSION_ID_NONE`. /// /// The sessionID for a stream should not change once the stream has been opened. /// /// Available since API level 28. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() pub fn AAudioStream_getSessionId(stream: *mut AAudioStream) -> i32; /// Passes back the time at which a particular frame was presented. /// This can be used to synchronize audio with video or MIDI. /// It can also be used to align a recorded stream with a playback stream. /// Returns 0 for OK or a negative error. /// /// Timestamps are only valid when the stream is in `STREAM_STATE_STARTED`. /// `ERROR_INVALID_STATE` will be returned if the stream is not started. /// Note that because requestStart() is asynchronous, timestamps will not be valid until /// a short time after calling requestStart(). /// So `ERROR_INVALID_STATE` should not be considered a fatal error. /// Just try calling again later. /// /// If an error occurs, then the position and time will not be modified. /// /// The position and time passed back are monotonically increasing. /// /// Available since API level 26. /// /// # Arguments /// /// * `stream` - reference provided by AAudioStreamBuilder_openStream() /// * `clockid` - CLOCK_MONOTONIC or CLOCK_BOOTTIME /// * `frame_position` - pointer to a variable to receive the position /// * `time_nanoseconds` - pointer to a variable to receive the time pub fn AAudioStream_getTimestamp( stream: *mut AAudioStream, clockid: libc::clockid_t, frame_positon: *mut i64, time_nanoseconds: *mut i64, ) -> i32; }