le_audio_interface.h

    1 
    2 
    3 /*
    4  * ====================== WARNING ======================
    5  *
    6  * THE CONTENTS OF THIS FILE HAVE BEEN AUTO-GENERATED.
    7  * DO NOT MODIFY IN ANY WAY.
    8  *
    9  * ====================== WARNING ======================
   10  */
   11 
   12 /**
   13  * @page c_audio Audio
   14  *
   15  * @ref le_audio_interface.h "API Reference" <br>
   16  * @ref platformConstraintsAudio Constraints
   17  * <HR>
   18  *
   19  * The Audio API handles audio interfaces including play and record supported formats.
   20  *
   21  * A Legato device can use several audio interfaces. You choose the input and output
   22  * interfaces to tie together. The Audio stream related to a particular interface is
   23  * represented with an 'Audio Stream Reference'.
   24  *
   25  * You can create your own audio path by connecting several audio streams together using
   26  * audio connectors.
   27  *
   28  * An audio path can support more than two audio interfaces. You can have a basic output audio
   29  * path of a voice call to connect the Modem Voice Received interface with the Speaker
   30  * interface, and at the same time, the Modem Voice Received interface can be also connected to a
   31  * Recorder Device interface.
   32  *
   33  * @section le_audio_binding IPC interfaces binding
   34  *
   35  * All the functions of this API are provided by the @b audioService.
   36  *
   37  * Here's a code sample binding to audio services:
   38  * @verbatim
   39    bindings:
   40    {
   41       clientExe.clientComponent.le_audio -> audioService.le_audio
   42    }
   43    @endverbatim
   44  *
   45  * @section le_audio_configuration Configure the Audio
   46  *
   47  * The audio profile can be set with the le_audio_SetProfile() function.
   48  *
   49  * @warning Ensure to check the number of supported audio profiles for your specific platform.
   50  *
   51  * An audio profile can be retrieved with le_audio_GetProfile() and set with le_audio_SetProfile().
   52  *
   53  * Then, the following functions let you enable or disable the audio settings on the selected audio
   54  * interface:
   55  * - le_audio_EnableNoiseSuppressor()/le_audio_DisableNoiseSuppressor(): Noise Suppressor.
   56  * - le_audio_EnableEchoCanceller()/ le_audio_DisableEchoCanceller(): Echo Canceller.
   57  * - le_audio_EnableFirFilter()/ le_audio_DisableFirFilter(): downlink FIR Filter (Finite Impulse
   58  *   Response).
   59  * - le_audio_EnableIirFilter()/ le_audio_DisableIirFilter(): downlink IIR Filter (Infinite Impulse
   60  *   Response).
   61  * - le_audio_EnableAutomaticGainControl()/ le_audio_DisableAutomaticGainControl(): automatic
   62  * gain on the selected audio stream.
   63  *
   64  * - le_audio_IsNoiseSuppressorEnabled(): To get the status of Noise Suppressor.
   65  * - le_audio_IsEchoCancellerEnabled(): To get the status of Echo Canceller.
   66  *
   67  * To configure the encoding format, use le_audio_GetEncodingFormat() and le_audio_SetEncodingFormat().
   68  *
   69  * To configure gain settings, use le_audio_GetGain() and le_audio_SetGain().
   70  *
   71  * PCM has the following configuration get/set functions:
   72  * - le_audio_GetPcmSamplingRate() and le_audio_SetPcmSamplingRate() for Hz rate.
   73  * - le_audio_GetPcmSamplingResolution() and le_audio_SetPcmSamplingResolution() for bit/sample settings.
   74  * - le_audio_GetPcmCompanding() and le_audio_SetPcmCompanding() for signal settings.
   75  * - le_audio_GetSamplePcmChannelNumber() and le_audio_SetSamplePcmChannelNumber() for channel numbers.
   76  *
   77  * To Mute/Unmute the Call Waiting Tone to alert for an incoming voice call when a voice call is
   78  * already in progress, use le_audio_MuteCallWaitingTone() and le_audio_UnmuteCallWaitingTone().
   79  *
   80  * @note The Call Waiting Supplementary Service must be enabled.
   81  *
   82  * @section le_audio_interfaces Open/Close an Audio Interface
   83  *
   84  * The following functions let you select the desired interface attributes:
   85  * - le_audio_OpenMic(): returns an Audio Stream Reference of the analog audio signal coming from
   86  *                       the microphone input.
   87  * - le_audio_OpenSpeaker(): returns an Audio Stream Reference of the analog audio signal routed
   88  *                           to the Speaker output.
   89  * - le_audio_OpenUsbRx(): returns an Audio Stream Reference of the digitized audio signal coming
   90  *                         from an external device connected via USB Audio Class.
   91  * - le_audio_OpenUsbTx(): returns an Audio Stream Reference of the digitized audio signal routed
   92  *                         to an external device connected via USB Audio Class.
   93  * - le_audio_OpenPcmRx(): it returns an Audio Stream Reference of the digitized audio signal
   94  *                            coming from an external device connected via the PCM interface.
   95  * - le_audio_OpenPcmTx(): it returns an Audio Stream Reference of the digitized audio signal
   96  *                            routed to an external device connected via the PCM interface.
   97  * - le_audio_OpenI2sRx(): it returns an Audio Stream Reference of the digitized audio signal
   98  *                            coming from an external device connected via the I2S interface.
   99  * - le_audio_OpenI2sTx(): it returns an Audio Stream Reference of the digitized audio signal
  100  *                            routed to an external device connected via the I2S interface.
  101  * - le_audio_OpenModemVoiceRx(): returns an Audio Stream Reference of the digitized audio signal
  102  *                                coming from a voice call. The audio format is negotiated with the
  103  *                                network when the call is established.
  104  * - le_audio_OpenModemVoiceTx(): returns an Audio Stream Reference of the digitized audio signal
  105  *                                routed to a voice call. The audio format is negotiated with the
  106  *                                network when the call is established.
  107  *
  108  * Multiple users can own the same stream at the same time.
  109  *
  110  * le_audio_GetDefaultPcmTimeSlot() can be called to get the default PCM time slot used on the
  111  * current platform.
  112  *
  113  * le_audio_GetDefaultI2sMode() can be called to get the default I2s channel mode slot used on
  114  * the current platform.
  115  *
  116  * Call le_audio_Close() to release it. If
  117  * several users own the same, corresponding stream reference, the interface will
  118  * close only after the last user releases the audio stream.
  119  *
  120  * You can configure the PCM interface with the le_audio_SetPcmSamplingRate(),
  121  * le_audio_SetPcmSamplingResolution() and le_audio_SetPcmCompanding() functions.
  122  * This function must be called before activating an audio path with the PCM interface, in other
  123  * words you must call this function before connecting the PCM Stream to a connector.
  124  *
  125  * In addition, the le_audio_GetPcmSamplingRate(), le_audio_GetPcmSamplingResolution() and
  126  * le_audio_GetPcmCompanding() functions allows you to retrieve the PCM interface configuration.
  127  *
  128  * @note Opening a Legato audio stream doesn’t necessarily interact with the audio HW interface.
  129  * On most platforms, it only allocates a context in memory. The audio path becomes active when the
  130  * streams are plugged into a connector.
  131  *
  132  *
  133  * @section le_audio_streams Control an Audio Stream
  134  *
  135  * Once the users get an Audio Stream reference, they can control it with the following functions:
  136  *
  137  * - le_audio_SetGain(): adjust the gain of an audio stream (gain value is specific to the
  138  *                       platform).
  139  * - le_audio_GetGain(): retrieve the gain of an audio stream (gain value is specific to the
  140  *                       platform).
  141  * - le_audio_Mute(): mute an audio stream.
  142  * - le_audio_Unmute(): unmute an audio stream.
  143  *
  144  * @note Multimedia (playback and recording) must be controled separatly from the main audio path
  145  * (Microphone/Speaker, I2S, PCM, USB).  Muting/Unmuting a multimedia is done by
  146  * muting/unmuting the multimedia stream, and not the other connected stream. For example, in case
  147  * of playback + voice on the speaker, if the user wants to mute all the audio outcoming to the
  148  * speaker, it must mute both the Speaker stream and the playback stream.
  149  *
  150  * @warning Ensure to check the list of supported audio streams for these functions on your
  151  * specific platform.
  152  *
  153  * In the case your platform can support other gains in your audio subsystem, you can set or get
  154  * the value of them with the following functions:
  155  *
  156  * - le_audio_SetPlatformSpecificGain(): adjust the value of a platform specific gain in the audio
  157  *                                       subsystem.
  158  * - le_audio_GetPlatformSpecificGain(): retrieve the value of a platform specific gain in the
  159  *                                       audio subsystem.
  160  *
  161  * @warning Ensure to check the names of supported gains for your specific platform.
  162  *
  163  * @section le_audio_connectors Create Audio connectors
  164  *
  165  * You can create your own audio path by connecting several audio streams together.
  166  *
  167  * le_audio_CreateConnector() function creates a reference to an audio connector.
  168  *
  169  * You can tie an audio stream to a connector by calling the le_audio_Connect()
  170  * function.
  171  *
  172  * You can remove an audio stream from a connector by calling the le_audio_Disconnect()
  173  * function.
  174  *
  175  * When finished with it, delete it using the le_audio_DeleteConnector() function.
  176  *
  177  * The following image shows how to connect a Player stream to play a file towards a remote end
  178  * during a voice call.
  179  * @image html AudioConnector.png
  180  *
  181  * A sample code that implements audio connectors and audio streams during voice call can be found in
  182  * \b audioMccTest.c file (please refer to @ref c_audioMcc page).
  183  *
  184  * @note It is recommended to set the connectors before the connected streams are used.
  185  * In particular, a connector using Modem Voice Rx or Tx interfaces has to be created before dialing
  186  * or answering the call if the application needs to customize the audio path.
  187  *
  188  * @section le_audio_pb_playback Playback
  189  *
  190  * An audio file can be played to any active output interfaces.
  191  *
  192  * Open a player interface by calling:
  193  * - le_audio_OpenPlayer(): returns an Audio Stream Reference for file playback.
  194  *                          An audio file can be played on the local audio interface like
  195  *                          Speaker, USB Tx, PCM Tx, I2S Tx or on the remote audio
  196  *                          interface Modem Voice Tx depending the kind of connector
  197  *                          (input or output) is tied to.
  198  *
  199  * - le_audio_PlayFile(): plays a specified file. WAVE (Waveform audio file) and
  200  * AMR (Adaptive Multi Rate) are supported.
  201  * AMR is an audio compression format optimized for speech coding. Two codecs are supported:
  202  *     - AMR_NB (AMR Narrowband) codec that encodes narrowband (200--3400 Hz) signals at variable bit
  203  * rates ranging from 4.75 to 12.2 kbit/s. It was adopted as the standard speech codec by 3GPP.
  204  *     - AMR-WB (AMR Wideband) is an ITU-T standard speech codec which improved speech quality due to a
  205  * wider speech bandwidth of 50--7000 Hz.
  206  *
  207  * - le_audio_PlaySamples(): initiates a playback using an audio flow. A pipe has
  208  * to be opened first, then the PCM samples are sent throught the opened pipe.
  209  * A play can be done only on a connected stream. For instance, the
  210  * "I2S Tx", "Modem Voice Rx" and "Player" must be previously connected before playing a file.
  211  * If there are no more PCM samples to be played, the playback must be stopped by calling
  212  * le_audio_Stop().
  213  *
  214  * @section le_audio_pb_rec Record
  215  *
  216  *  * Audio file recording can be done from any active input interface.
  217  *
  218  * Open a "File Recording" interface by calling:
  219  * - le_audio_OpenRecorder(): returns an Audio Stream Reference for file recording.
  220  *                            The local audio interface like Microphone, USB Rx, PCM Rx,
  221  *                            I2S Rx is recorded into an audio file; or the Modem Voice Rx
  222  *                            remote audio interface is recorded into an audio file,
  223  *                            depending the kind of connector (input or output) is tied to.
  224  * - le_audio_RecordFile(): records in a specified file.
  225  * - le_audio_SetEncodingFormat(): sets the encoding format. The same formats as the
  226  * player are supported.
  227  * - le_audio_GetEncodingFormat(): gets the encoding format.
  228  * - le_audio_GetSamples(): gets the audio PCM samples.  A pipe has
  229  * to be opened first, then the PCM samples are sent throught the opened pipe.
  230  * Recording can only be done on a connected stream. For example, the
  231  * "I2S Rx", "Modem Voice Tx" and "Recorder" must be previously connected before recording a file.
  232  * If there are no more PCM samples to be retrieved, the recording must be stopped by calling
  233  * le_audio_Stop().
  234  *
  235  * A PCM configuration must be set with:
  236  * - le_audio_SetSamplePcmChannelNumber(): sets the channel number of a PCM
  237  * sample.
  238  * - le_audio_SetSamplePcmSamplingRate(): sets the sampling rate of a PCM
  239  * sample.
  240  * - le_audio_SetSamplePcmSamplingResolution(): sets the sampling resolution
  241  * (in bits per sample) of a PCM sample.
  242  *
  243  * The PCM samples configuration can be retrieved with:
  244  *      - le_audio_GetSamplePcmChannelNumber(): gets the channel number of a PCM
  245  * sample.
  246  *      - le_audio_GetSamplePcmSamplingRate(): gets the sampling rate of a PCM
  247  * sample.
  248  *      - le_audio_GetSamplePcmSamplingResolution(): can be called to get the sampling resolution
  249  * (in bits per sample) of a PCM sample.
  250  * The default configuration is PCM 16-bit audio @ 8KHz one channel.
  251  *
  252  * An AMR configuration must be set with:
  253  *      - le_audio_SetSampleAmrMode(): sets the AMR mode (NB/WB, bitrate).
  254  *      - le_audio_SetSampleAmrDtx(): can be called to activate/deactivate the Discontinuous
  255  * Transmission (DTX) to reduce bandwidth usage during silence periods.
  256  * The AMR configuration can be retrieved with:
  257  *      - le_audio_GetSampleAmrMode(): gets the AMR mode.
  258  *      - le_audio_GetSampleAmrDtx(): gets the Discontinuous
  259  * Transmission (DTX).
  260  *
  261  * To stop a play/record call le_audio_Stop():
  262  * - The playback/record stops playing/recording, and the read/write position indicator associated
  263  * with the file stream is rewound to the beginning of the file. A new file can be played/recorded
  264  * using le_audio_PlayFile()/le_audio_PlaySamples()/le_audio_RecordFile()/le_audio_GetSamples().
  265  * - le_audio_Pause(): can be called to pause a play/record. The file playing/recording is put on
  266  * hold, the read/write position indicator of the file is not moved.
  267  * - le_audio_Resume(): can be called to resume a paused play/record. The file playing/recording
  268  * continues at the file's position indicator held after the pause.
  269  * - le_audio_Flush(): can be called to flush the remaining audio samples before sending
  270  * them to the audio driver.
  271  *
  272  * You can also register a handler function for media-related notifications like errors or audio
  273  * events.
  274  *
  275  * le_audio_AddMediaHandler() function installs a handler for player/recorder stream
  276  * notifications.
  277  *
  278  * le_audio_RemoveMediaHandler() function removes the player/recorder handler function.
  279  *
  280  * @note The @c LE_AUDIO_MEDIA_NO_MORE_SAMPLES event indicates when all samples put into the pipe
  281  * by the user's app have been sent to the audio driver (see le_audio_PlaySamples()).
  282  *
  283  * A sample code that implements audio playback and capture can be found in \b audioPlaybackRec.c
  284  * file (please refer to @ref c_audioCapturePlayback page).
  285  *
  286  * @section le_audio_dtmf DTMF
  287  *
  288  * The le_audio_PlayDtmf() function allows the application to play one or several DTMF on a playback
  289  * stream. The duration and the pause of the DTMFs must also be specified with the input parameters.
  290  *
  291  * The le_audio_PlaySignallingDtmf() function allows the application to ask the Mobile Network to
  292  * generate on the remote audio party the DTMFs. Compared with le_audio_PlayDtmf(),
  293  * le_audio_PlaySignallingDtmf() function may offer a better signal quality, but the the duration
  294  * and the pause timings may be less accurate.
  295  *
  296  * The application must register a handler function to detect incoming DTMF characters on a specific
  297  * input audio stream. The le_audio_AddDtmfDetectorHandler() function installs a handler for DTMF
  298  * detection.
  299  *
  300  * The le_audio_RemoveDtmfDetectorHandler() function uninstalls the handler function.
  301  *
  302  * The DTMFs are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, *, #, A, B, C, D. Not case sensitive.
  303  *
  304  * @note The DTMF decoding works only on an active audio path.
  305  *
  306  * A sample code that implements DTMF playback and decoding can be found in \b audioDtmfTest.c file
  307  * (please refer to @ref c_audiodtmf page).
  308  *
  309  * <HR>
  310  *
  311  * Copyright (C) Sierra Wireless Inc.
  312  */
  313 /**
  314  * @file le_audio_interface.h
  315  *
  316  * Legato @ref c_audio include file.
  317  *
  318  * Copyright (C) Sierra Wireless Inc.
  319  */
  320 /**
  321  * @page c_audioMcc Sample code of audio settings for a dialing call
  322  *
  323  * @include "apps/test/audio/audioMcc/audioMccComp/audioMccTest.c"
  324  */
  325 /**
  326  * @page c_audiodtmf Sample code of dtmf playback and decoding
  327  *
  328  * @include "apps/test/audio/dtmf/dtmfTestComp/audioDtmfTest.c"
  329  */
  330 /**
  331  * @page c_audioCapturePlayback Sample code of audio playback and capture
  332  *
  333  * @include "apps/test/audio/audioPlaybackRec/audioPlaybackRecComp/audioPlaybackRec.c"
  334  */
  335 
  336 #ifndef LE_AUDIO_INTERFACE_H_INCLUDE_GUARD
  337 #define LE_AUDIO_INTERFACE_H_INCLUDE_GUARD
  338 
  339 
  340 #include "legato.h"
  341 
  342 
  343 //--------------------------------------------------------------------------------------------------
  344 /**
  345  * Type for handler called when a server disconnects.
  346  */
  347 //--------------------------------------------------------------------------------------------------
  348 typedef void (*le_audio_DisconnectHandler_t)(void *);
  349 
  350 //--------------------------------------------------------------------------------------------------
  351 /**
  352  *
  353  * Connect the current client thread to the service providing this API. Block until the service is
  354  * available.
  355  *
  356  * For each thread that wants to use this API, either ConnectService or TryConnectService must be
  357  * called before any other functions in this API.  Normally, ConnectService is automatically called
  358  * for the main thread, but not for any other thread. For details, see @ref apiFilesC_client.
  359  *
  360  * This function is created automatically.
  361  */
  362 //--------------------------------------------------------------------------------------------------
  363 void le_audio_ConnectService
  364 (
  365     void
  366 );
  367 
  368 //--------------------------------------------------------------------------------------------------
  369 /**
  370  *
  371  * Try to connect the current client thread to the service providing this API. Return with an error
  372  * if the service is not available.
  373  *
  374  * For each thread that wants to use this API, either ConnectService or TryConnectService must be
  375  * called before any other functions in this API.  Normally, ConnectService is automatically called
  376  * for the main thread, but not for any other thread. For details, see @ref apiFilesC_client.
  377  *
  378  * This function is created automatically.
  379  *
  380  * @return
  381  *  - LE_OK if the client connected successfully to the service.
  382  *  - LE_UNAVAILABLE if the server is not currently offering the service to which the client is
  383  *    bound.
  384  *  - LE_NOT_PERMITTED if the client interface is not bound to any service (doesn't have a binding).
  385  *  - LE_COMM_ERROR if the Service Directory cannot be reached.
  386  */
  387 //--------------------------------------------------------------------------------------------------
  388 le_result_t le_audio_TryConnectService
  389 (
  390     void
  391 );
  392 
  393 //--------------------------------------------------------------------------------------------------
  394 /**
  395  * Set handler called when server disconnection is detected.
  396  *
  397  * When a server connection is lost, call this handler then exit with LE_FATAL.  If a program wants
  398  * to continue without exiting, it should call longjmp() from inside the handler.
  399  */
  400 //--------------------------------------------------------------------------------------------------
  401 void le_audio_SetServerDisconnectHandler
  402 (
  403     le_audio_DisconnectHandler_t disconnectHandler,
  404     void *contextPtr
  405 );
  406 
  407 //--------------------------------------------------------------------------------------------------
  408 /**
  409  *
  410  * Disconnect the current client thread from the service providing this API.
  411  *
  412  * Normally, this function doesn't need to be called. After this function is called, there's no
  413  * longer a connection to the service, and the functions in this API can't be used. For details, see
  414  * @ref apiFilesC_client.
  415  *
  416  * This function is created automatically.
  417  */
  418 //--------------------------------------------------------------------------------------------------
  419 void le_audio_DisconnectService
  420 (
  421     void
  422 );
  423 
  424 
  425 //--------------------------------------------------------------------------------------------------
  426 /**
  427  * Maximum DTMF string length.
  428  */
  429 //--------------------------------------------------------------------------------------------------
  430 #define LE_AUDIO_DTMF_MAX_LEN 100
  431 
  432 //--------------------------------------------------------------------------------------------------
  433 /**
  434  * Maximum DTMF string length.
  435  * One extra byte is added for the null character.
  436  */
  437 //--------------------------------------------------------------------------------------------------
  438 #define LE_AUDIO_DTMF_MAX_BYTES 101
  439 
  440 //--------------------------------------------------------------------------------------------------
  441 /**
  442  * No file descriptor define
  443  */
  444 //--------------------------------------------------------------------------------------------------
  445 #define LE_AUDIO_NO_FD -1
  446 
  447 //--------------------------------------------------------------------------------------------------
  448 /**
  449  * Maximum gain's name string length.
  450  */
  451 //--------------------------------------------------------------------------------------------------
  452 #define LE_AUDIO_GAIN_NAME_MAX_LEN 100
  453 
  454 //--------------------------------------------------------------------------------------------------
  455 /**
  456  * Maximum gain's name string length.
  457  * One extra byte is added for the null character.
  458  */
  459 //--------------------------------------------------------------------------------------------------
  460 #define LE_AUDIO_GAIN_NAME_MAX_BYTES 101
  461 
  462 //--------------------------------------------------------------------------------------------------
  463 /**
  464  * Audio recording/playback events.
  465  */
  466 //--------------------------------------------------------------------------------------------------
  467 typedef enum
  468 {
  469     LE_AUDIO_MEDIA_ENDED = 0,
  470         ///< Playback has reached the end of file.
  471     LE_AUDIO_MEDIA_NO_MORE_SAMPLES = 1,
  472         ///< No more audio samples to play.
  473     LE_AUDIO_MEDIA_ERROR = 2,
  474         ///< Recording/playback has encountered an error.
  475     LE_AUDIO_MEDIA_MAX = 3
  476         ///< Enumerate max value.
  477 }
  478 le_audio_MediaEvent_t;
  479 
  480 
  481 //--------------------------------------------------------------------------------------------------
  482 /**
  483  * Companding.
  484  */
  485 //--------------------------------------------------------------------------------------------------
  486 typedef enum
  487 {
  488     LE_AUDIO_COMPANDING_ALAW = 0,
  489         ///< A-law PCM (i.e. Europe and most of the rest of the world).
  490     LE_AUDIO_COMPANDING_ULAW = 1,
  491         ///< MU-law PCM (i.e. North America and Japan).
  492     LE_AUDIO_COMPANDING_NONE = 2
  493         ///< Linear PCM.
  494 }
  495 le_audio_Companding_t;
  496 
  497 
  498 //--------------------------------------------------------------------------------------------------
  499 /**
  500  * I2S channel mode.
  501  */
  502 //--------------------------------------------------------------------------------------------------
  503 typedef enum
  504 {
  505     LE_AUDIO_I2S_LEFT = 0,
  506         ///< Left channel.
  507     LE_AUDIO_I2S_RIGHT = 1,
  508         ///< Right channel.
  509     LE_AUDIO_I2S_MONO = 2,
  510         ///< Mono mode.
  511     LE_AUDIO_I2S_STEREO = 3,
  512         ///< Stereo mode.
  513     LE_AUDIO_I2S_REVERSE = 4
  514         ///< Reverse mode (left & right reversed).
  515 }
  516 le_audio_I2SChannel_t;
  517 
  518 
  519 //--------------------------------------------------------------------------------------------------
  520 /**
  521  * Audio format.
  522  */
  523 //--------------------------------------------------------------------------------------------------
  524 typedef enum
  525 {
  526     LE_AUDIO_WAVE = 0,
  527         ///< Waveform audio file
  528     LE_AUDIO_AMR = 1,
  529         ///< Adaptive Multi Rate
  530     LE_AUDIO_FORMAT_MAX = 2
  531         ///<
  532 }
  533 le_audio_Format_t;
  534 
  535 
  536 //--------------------------------------------------------------------------------------------------
  537 /**
  538  * AMR mode.
  539  */
  540 //--------------------------------------------------------------------------------------------------
  541 typedef enum
  542 {
  543     LE_AUDIO_AMR_NONE = 0,
  544         ///< Not set
  545     LE_AUDIO_AMR_NB_4_75_KBPS = 1,
  546         ///< AMR Narrowband in 4.75kbps
  547     LE_AUDIO_AMR_NB_5_15_KBPS = 2,
  548         ///< AMR Narrowband in 5.15kbps
  549     LE_AUDIO_AMR_NB_5_9_KBPS = 3,
  550         ///< AMR Narrowband in 5.9kbps
  551     LE_AUDIO_AMR_NB_6_7_KBPS = 4,
  552         ///< AMR Narrowband in 6.7kbps
  553     LE_AUDIO_AMR_NB_7_4_KBPS = 5,
  554         ///< AMR Narrowband in 7.4kbps (default value)
  555     LE_AUDIO_AMR_NB_7_95_KBPS = 6,
  556         ///< AMR Narrowband in 7.95kbps
  557     LE_AUDIO_AMR_NB_10_2_KBPS = 7,
  558         ///< AMR Narrowband in 10.3kbps
  559     LE_AUDIO_AMR_NB_12_2_KBPS = 8,
  560         ///< AMR Narrowband in 12.2kbps
  561     LE_AUDIO_AMR_WB_6_6_KBPS = 9,
  562         ///< AMR Wideband in 6.6kbps
  563     LE_AUDIO_AMR_WB_8_85_KBPS = 10,
  564         ///< AMR Wideband in 8.85kbps
  565     LE_AUDIO_AMR_WB_12_65_KBPS = 11,
  566         ///< AMR Wideband in 12.65kbps
  567     LE_AUDIO_AMR_WB_14_25_KBPS = 12,
  568         ///< AMR Wideband in 14.25kbps
  569     LE_AUDIO_AMR_WB_15_85_KBPS = 13,
  570         ///< AMR Wideband in 15.85kbps
  571     LE_AUDIO_AMR_WB_18_25_KBPS = 14,
  572         ///< AMR Wideband in 18.25kbps
  573     LE_AUDIO_AMR_WB_19_85_KBPS = 15,
  574         ///< AMR Wideband in 19.85kbps
  575     LE_AUDIO_AMR_WB_23_05_KBPS = 16,
  576         ///< AMR Wideband in 23.05kbps
  577     LE_AUDIO_AMR_WB_23_85_KBPS = 17
  578         ///< AMR Wideband in 23.85kbps
  579 }
  580 le_audio_AmrMode_t;
  581 
  582 
  583 //--------------------------------------------------------------------------------------------------
  584 /**
  585  * Reference type for Audio Stream
  586  */
  587 //--------------------------------------------------------------------------------------------------
  588 typedef struct le_audio_Stream* le_audio_StreamRef_t;
  589 
  590 
  591 //--------------------------------------------------------------------------------------------------
  592 /**
  593  * Reference type for Audio Connector
  594  */
  595 //--------------------------------------------------------------------------------------------------
  596 typedef struct le_audio_Connector* le_audio_ConnectorRef_t;
  597 
  598 
  599 //--------------------------------------------------------------------------------------------------
  600 /**
  601  * Reference type used by Add/Remove functions for EVENT 'le_audio_Media'
  602  */
  603 //--------------------------------------------------------------------------------------------------
  604 typedef struct le_audio_MediaHandler* le_audio_MediaHandlerRef_t;
  605 
  606 
  607 //--------------------------------------------------------------------------------------------------
  608 /**
  609  * Reference type used by Add/Remove functions for EVENT 'le_audio_DtmfDetector'
  610  */
  611 //--------------------------------------------------------------------------------------------------
  612 typedef struct le_audio_DtmfDetectorHandler* le_audio_DtmfDetectorHandlerRef_t;
  613 
  614 
  615 //--------------------------------------------------------------------------------------------------
  616 /**
  617  * Handler for audio stream event.
  618  *
  619  */
  620 //--------------------------------------------------------------------------------------------------
  621 typedef void (*le_audio_MediaHandlerFunc_t)
  622 (
  623     le_audio_StreamRef_t streamRef,
  624         ///< Audio stream reference.
  625     le_audio_MediaEvent_t event,
  626         ///< Event value.
  627     void* contextPtr
  628         ///<
  629 );
  630 
  631 //--------------------------------------------------------------------------------------------------
  632 /**
  633  * Handler for DTMF decoding.
  634  *
  635  */
  636 //--------------------------------------------------------------------------------------------------
  637 typedef void (*le_audio_DtmfDetectorHandlerFunc_t)
  638 (
  639     le_audio_StreamRef_t streamRef,
  640         ///< Audio stream reference.
  641     char dtmf,
  642         ///< Detected DTMF.
  643     void* contextPtr
  644         ///<
  645 );
  646 
  647 //--------------------------------------------------------------------------------------------------
  648 /**
  649  * Open the Microphone.
  650  *
  651  * @return Reference to the input audio stream, NULL if the function fails.
  652  */
  653 //--------------------------------------------------------------------------------------------------
  654 le_audio_StreamRef_t le_audio_OpenMic
  655 (
  656     void
  657 );
  658 
  659 //--------------------------------------------------------------------------------------------------
  660 /**
  661  * Open the Speakerphone.
  662  *
  663  * @return Reference to the output audio stream, NULL if the function fails.
  664  */
  665 //--------------------------------------------------------------------------------------------------
  666 le_audio_StreamRef_t le_audio_OpenSpeaker
  667 (
  668     void
  669 );
  670 
  671 //--------------------------------------------------------------------------------------------------
  672 /**
  673  * Open the received audio stream of an USB audio class.
  674  *
  675  * @return Reference to the input audio stream, NULL if the function fails.
  676  */
  677 //--------------------------------------------------------------------------------------------------
  678 le_audio_StreamRef_t le_audio_OpenUsbRx
  679 (
  680     void
  681 );
  682 
  683 //--------------------------------------------------------------------------------------------------
  684 /**
  685  * Open the transmitted audio stream of an USB audio class.
  686  *
  687  * @return Reference to the output audio stream, NULL if the function fails.
  688  */
  689 //--------------------------------------------------------------------------------------------------
  690 le_audio_StreamRef_t le_audio_OpenUsbTx
  691 (
  692     void
  693 );
  694 
  695 //--------------------------------------------------------------------------------------------------
  696 /**
  697  * Open the received audio stream of the PCM interface.
  698  *
  699  * @return Reference to the input audio stream, NULL if the function fails.
  700  */
  701 //--------------------------------------------------------------------------------------------------
  702 le_audio_StreamRef_t le_audio_OpenPcmRx
  703 (
  704     uint32_t timeslot
  705         ///< [IN] The time slot number.
  706 );
  707 
  708 //--------------------------------------------------------------------------------------------------
  709 /**
  710  * Open the transmitted audio stream of the PCM interface.
  711  *
  712  * @return Reference to the output audio stream, NULL if the function fails.
  713  */
  714 //--------------------------------------------------------------------------------------------------
  715 le_audio_StreamRef_t le_audio_OpenPcmTx
  716 (
  717     uint32_t timeslot
  718         ///< [IN] The time slot number.
  719 );
  720 
  721 //--------------------------------------------------------------------------------------------------
  722 /**
  723  * Open the received audio stream of the I2S interface.
  724  *
  725  * @return Reference to the input audio stream, NULL if the function fails.
  726  */
  727 //--------------------------------------------------------------------------------------------------
  728 le_audio_StreamRef_t le_audio_OpenI2sRx
  729 (
  730     le_audio_I2SChannel_t mode
  731         ///< [IN] The channel mode.
  732 );
  733 
  734 //--------------------------------------------------------------------------------------------------
  735 /**
  736  * Open the transmitted audio stream of the I2S interface.
  737  *
  738  * @return Reference to the output audio stream, NULL if the function fails.
  739  */
  740 //--------------------------------------------------------------------------------------------------
  741 le_audio_StreamRef_t le_audio_OpenI2sTx
  742 (
  743     le_audio_I2SChannel_t mode
  744         ///< [IN] The channel mode.
  745 );
  746 
  747 //--------------------------------------------------------------------------------------------------
  748 /**
  749  * Open the audio stream for playback.
  750  *
  751  * @return Reference to the audio stream, NULL if the function fails.
  752  */
  753 //--------------------------------------------------------------------------------------------------
  754 le_audio_StreamRef_t le_audio_OpenPlayer
  755 (
  756     void
  757 );
  758 
  759 //--------------------------------------------------------------------------------------------------
  760 /**
  761  * Open the audio stream for recording.
  762  *
  763  * @return Reference to the audio stream, NULL if the function fails.
  764  */
  765 //--------------------------------------------------------------------------------------------------
  766 le_audio_StreamRef_t le_audio_OpenRecorder
  767 (
  768     void
  769 );
  770 
  771 //--------------------------------------------------------------------------------------------------
  772 /**
  773  * Open the received audio stream of a voice call.
  774  *
  775  * @return Reference to the input audio stream, NULL if the function fails.
  776  */
  777 //--------------------------------------------------------------------------------------------------
  778 le_audio_StreamRef_t le_audio_OpenModemVoiceRx
  779 (
  780     void
  781 );
  782 
  783 //--------------------------------------------------------------------------------------------------
  784 /**
  785  * Open the transmitted audio stream of a voice call.
  786  *
  787  * @return Reference to the output audio stream, NULL if the function fails.
  788  */
  789 //--------------------------------------------------------------------------------------------------
  790 le_audio_StreamRef_t le_audio_OpenModemVoiceTx
  791 (
  792     void
  793 );
  794 
  795 //--------------------------------------------------------------------------------------------------
  796 /**
  797  * Add handler function for EVENT 'le_audio_Media'
  798  *
  799  * This event provides information on player / recorder stream events.
  800  *
  801  */
  802 //--------------------------------------------------------------------------------------------------
  803 le_audio_MediaHandlerRef_t le_audio_AddMediaHandler
  804 (
  805     le_audio_StreamRef_t streamRef,
  806         ///< [IN] The audio stream reference.
  807     le_audio_MediaHandlerFunc_t handlerPtr,
  808         ///< [IN]
  809     void* contextPtr
  810         ///< [IN]
  811 );
  812 
  813 //--------------------------------------------------------------------------------------------------
  814 /**
  815  * Remove handler function for EVENT 'le_audio_Media'
  816  */
  817 //--------------------------------------------------------------------------------------------------
  818 void le_audio_RemoveMediaHandler
  819 (
  820     le_audio_MediaHandlerRef_t handlerRef
  821         ///< [IN]
  822 );
  823 
  824 //--------------------------------------------------------------------------------------------------
  825 /**
  826  * Close an audio stream.
  827  * If several users own the stream reference, the interface closes only after
  828  * the last user closes the audio stream.
  829  *
  830  * @note If the caller is passing a bad reference into this function, it is a fatal error, the
  831  *       function will not return.
  832  */
  833 //--------------------------------------------------------------------------------------------------
  834 void le_audio_Close
  835 (
  836     le_audio_StreamRef_t streamRef
  837         ///< [IN] Audio stream reference.
  838 );
  839 
  840 //--------------------------------------------------------------------------------------------------
  841 /**
  842  * Set the Gain value of an input or output stream.
  843  *
  844  * @return LE_FAULT         Function failed.
  845  * @return LE_BAD_PARAMETER Audio stream reference is invalid.
  846  * @return LE_OUT_OF_RANGE  Gain value is out of range
  847  * @return LE_OK            Function succeeded.
  848  *
  849  * @note If the caller is passing a bad reference into this function, it is a fatal error, the
  850  *       function will not return.
  851  */
  852 //--------------------------------------------------------------------------------------------------
  853 le_result_t le_audio_SetGain
  854 (
  855     le_audio_StreamRef_t streamRef,
  856         ///< [IN] Audio stream reference.
  857     int32_t gain
  858         ///< [IN] Gain value (specific to the platform)
  859 );
  860 
  861 //--------------------------------------------------------------------------------------------------
  862 /**
  863  * Get the Gain value of an input or output stream.
  864  *
  865  * @return LE_FAULT         Function failed.
  866  * @return LE_BAD_PARAMETER Audio stream reference is invalid.
  867  * @return LE_OK            Function succeeded.
  868  *
  869  * @note If the caller is passing a bad reference into this function, it is a fatal error, the
  870  *       function will not return.
  871  */
  872 //--------------------------------------------------------------------------------------------------
  873 le_result_t le_audio_GetGain
  874 (
  875     le_audio_StreamRef_t streamRef,
  876         ///< [IN] Audio stream reference.
  877     int32_t* gainPtr
  878         ///< [OUT] Gain value (specific to the platform)
  879 );
  880 
  881 //--------------------------------------------------------------------------------------------------
  882 /**
  883  * Mute an audio stream.
  884  *
  885  * @return LE_FAULT         Function failed.
  886  * @return LE_BAD_PARAMETER Audio stream reference is invalid.
  887  * @return LE_OK            Function succeeded.
  888  *
  889  * @note If the caller is passing a bad reference into this function, it is a fatal error, the
  890  *       function will not return.
  891  */
  892 //--------------------------------------------------------------------------------------------------
  893 le_result_t le_audio_Mute
  894 (
  895     le_audio_StreamRef_t streamRef
  896         ///< [IN] Audio stream reference.
  897 );
  898 
  899 //--------------------------------------------------------------------------------------------------
  900 /**
  901  * Unmute an audio stream.
  902  *
  903  * @return LE_FAULT         Function failed.
  904  * @return LE_BAD_PARAMETER Audio stream reference is invalid.
  905  * @return LE_OK            Function succeeded.
  906  *
  907  * @note If the caller is passing a bad reference into this function, it is a fatal error, the
  908  *       function will not return.
  909  */
  910 //--------------------------------------------------------------------------------------------------
  911 le_result_t le_audio_Unmute
  912 (
  913     le_audio_StreamRef_t streamRef
  914         ///< [IN] Audio stream reference.
  915 );
  916 
  917 //--------------------------------------------------------------------------------------------------
  918 /**
  919  * Create an audio connector reference.
  920  *
  921  * @return Reference to the audio connector, NULL if the function fails.
  922  */
  923 //--------------------------------------------------------------------------------------------------
  924 le_audio_ConnectorRef_t le_audio_CreateConnector
  925 (
  926     void
  927 );
  928 
  929 //--------------------------------------------------------------------------------------------------
  930 /**
  931  * Delete an audio connector reference.
  932  *
  933  * @note If the caller is passing a bad reference into this function, it is a fatal error, the
  934  *       function will not return.
  935  */
  936 //--------------------------------------------------------------------------------------------------
  937 void le_audio_DeleteConnector
  938 (
  939     le_audio_ConnectorRef_t connectorRef
  940         ///< [IN] Connector reference.
  941 );
  942 
  943 //--------------------------------------------------------------------------------------------------
  944 /**
  945  * Connect an audio stream to the connector reference.
  946  *
  947  * @return LE_FAULT         Function failed.
  948  * @return LE_BUSY          Insufficient DSP resources available.
  949  * @return LE_BAD_PARAMETER Connector and/or the audio stream references are invalid.
  950  * @return LE_OK            Function succeeded.
  951  *
  952  * @note If the caller is passing a bad reference into this function, it is a fatal error, the
  953  *       function will not return.
  954  */
  955 //--------------------------------------------------------------------------------------------------
  956 le_result_t le_audio_Connect
  957 (
  958     le_audio_ConnectorRef_t connectorRef,
  959         ///< [IN] Connector reference.
  960     le_audio_StreamRef_t streamRef
  961         ///< [IN] Audio stream reference.
  962 );
  963 
  964 //--------------------------------------------------------------------------------------------------
  965 /**
  966  * Disconnect an audio stream from the connector reference.
  967  *
  968  * @note If the caller is passing a bad reference into this function, it is a fatal error, the
  969  *       function will not return.
  970  */
  971 //--------------------------------------------------------------------------------------------------
  972 void le_audio_Disconnect
  973 (
  974     le_audio_ConnectorRef_t connectorRef,
  975         ///< [IN] Connector reference.
  976     le_audio_StreamRef_t streamRef
  977         ///< [IN] Audio stream reference.
  978 );
  979 
  980 //--------------------------------------------------------------------------------------------------
  981 /**
  982  * Add handler function for EVENT 'le_audio_DtmfDetector'
  983  *
  984  * This event provides information on DTMF decoding for the specified streamRef
  985  *
  986  */
  987 //--------------------------------------------------------------------------------------------------
  988 le_audio_DtmfDetectorHandlerRef_t le_audio_AddDtmfDetectorHandler
  989 (
  990     le_audio_StreamRef_t streamRef,
  991         ///< [IN] Audio stream reference.
  992     le_audio_DtmfDetectorHandlerFunc_t handlerPtr,
  993         ///< [IN]
  994     void* contextPtr
  995         ///< [IN]
  996 );
  997 
  998 //--------------------------------------------------------------------------------------------------
  999 /**
 1000  * Remove handler function for EVENT 'le_audio_DtmfDetector'
 1001  */
 1002 //--------------------------------------------------------------------------------------------------
 1003 void le_audio_RemoveDtmfDetectorHandler
 1004 (
 1005     le_audio_DtmfDetectorHandlerRef_t handlerRef
 1006         ///< [IN]
 1007 );
 1008 
 1009 //--------------------------------------------------------------------------------------------------
 1010 /**
 1011  * This function must be called to enable the Noise Suppressor.
 1012  *
 1013  * @return LE_FAULT         Function failed.
 1014  * @return LE_OK            Function succeeded.
 1015  *
 1016  * @note The process exits, if an invalid audio stream reference is given.
 1017  */
 1018 //--------------------------------------------------------------------------------------------------
 1019 le_result_t le_audio_EnableNoiseSuppressor
 1020 (
 1021     le_audio_StreamRef_t streamRef
 1022         ///< [IN] Audio stream reference.
 1023 );
 1024 
 1025 //--------------------------------------------------------------------------------------------------
 1026 /**
 1027  * This function must be called to disable the Noise Suppressor.
 1028  *
 1029  * @return LE_FAULT         Function failed.
 1030  * @return LE_OK            Function succeeded.
 1031  *
 1032  * @note The process exits, if an invalid audio stream reference is given.
 1033  */
 1034 //--------------------------------------------------------------------------------------------------
 1035 le_result_t le_audio_DisableNoiseSuppressor
 1036 (
 1037     le_audio_StreamRef_t streamRef
 1038         ///< [IN] Audio stream reference.
 1039 );
 1040 
 1041 //--------------------------------------------------------------------------------------------------
 1042 /**
 1043  * This function must be called to enable the Echo Canceller.
 1044  *
 1045  * @return LE_FAULT         Function failed.
 1046  * @return LE_OK            Function succeeded.
 1047  *
 1048  * @note The process exits, if an invalid audio stream reference is given.
 1049  */
 1050 //--------------------------------------------------------------------------------------------------
 1051 le_result_t le_audio_EnableEchoCanceller
 1052 (
 1053     le_audio_StreamRef_t streamRef
 1054         ///< [IN] Audio stream reference.
 1055 );
 1056 
 1057 //--------------------------------------------------------------------------------------------------
 1058 /**
 1059  * This function must be called to disable the Echo Canceller.
 1060  *
 1061  * @return LE_FAULT         Function failed.
 1062  * @return LE_OK            Function succeeded.
 1063  *
 1064  * @note The process exits, if an invalid audio stream reference is given.
 1065  */
 1066 //--------------------------------------------------------------------------------------------------
 1067 le_result_t le_audio_DisableEchoCanceller
 1068 (
 1069     le_audio_StreamRef_t streamRef
 1070         ///< [IN] Audio stream reference.
 1071 );
 1072 
 1073 //--------------------------------------------------------------------------------------------------
 1074 /**
 1075  * This function must be called to get the status of Noise Suppressor.
 1076  *
 1077  * @return LE_FAULT         Function failed.
 1078  * @return LE_BAD_PARAMETER If streamRef contains an invalid audioInterface.
 1079  * @return LE_OK            Function succeeded.
 1080  *
 1081  * @note The process exits, if an invalid audio stream reference is given.
 1082  */
 1083 //--------------------------------------------------------------------------------------------------
 1084 le_result_t le_audio_IsNoiseSuppressorEnabled
 1085 (
 1086     le_audio_StreamRef_t streamRef,
 1087         ///< [IN] Audio stream reference.
 1088     bool* statusPtr
 1089         ///< [OUT] true if NS is enabled, false otherwise
 1090 );
 1091 
 1092 //--------------------------------------------------------------------------------------------------
 1093 /**
 1094  * This function must be called to get the status of Echo Canceller.
 1095  *
 1096  * @return LE_FAULT         Function failed.
 1097  * @return LE_BAD_PARAMETER If streamRef contains an invalid audioInterface.
 1098  * @return LE_OK            Function succeeded.
 1099  *
 1100  * @note The process exits, if an invalid audio stream reference is given.
 1101  */
 1102 //--------------------------------------------------------------------------------------------------
 1103 le_result_t le_audio_IsEchoCancellerEnabled
 1104 (
 1105     le_audio_StreamRef_t streamRef,
 1106         ///< [IN] Audio stream reference.
 1107     bool* statusPtr
 1108         ///< [OUT] true if EC is enabled, false otherwise
 1109 );
 1110 
 1111 //--------------------------------------------------------------------------------------------------
 1112 /**
 1113  * This function must be called to enable the FIR (Finite Impulse Response) filter.
 1114  *
 1115  * @return LE_FAULT         Function failed.
 1116  * @return LE_OK            Function succeeded.
 1117  *
 1118  * @note The process exits, if an invalid audio stream reference is given.
 1119  */
 1120 //--------------------------------------------------------------------------------------------------
 1121 le_result_t le_audio_EnableFirFilter
 1122 (
 1123     le_audio_StreamRef_t streamRef
 1124         ///< [IN] Audio stream reference.
 1125 );
 1126 
 1127 //--------------------------------------------------------------------------------------------------
 1128 /**
 1129  * This function must be called to disable the FIR (Finite Impulse Response) filter.
 1130  *
 1131  * @return LE_FAULT         Function failed.
 1132  * @return LE_OK            Function succeeded.
 1133  *
 1134  * @note The process exits, if an invalid audio stream reference is given.
 1135  */
 1136 //--------------------------------------------------------------------------------------------------
 1137 le_result_t le_audio_DisableFirFilter
 1138 (
 1139     le_audio_StreamRef_t streamRef
 1140         ///< [IN] Audio stream reference.
 1141 );
 1142 
 1143 //--------------------------------------------------------------------------------------------------
 1144 /**
 1145  * This function must be called to enable the IIR (Infinite Impulse Response) filter.
 1146  *
 1147  * @return LE_FAULT         Function failed.
 1148  * @return LE_OK            Function succeeded.
 1149  *
 1150  * @note The process exits, if an invalid audio stream reference is given.
 1151  */
 1152 //--------------------------------------------------------------------------------------------------
 1153 le_result_t le_audio_EnableIirFilter
 1154 (
 1155     le_audio_StreamRef_t streamRef
 1156         ///< [IN] Audio stream reference.
 1157 );
 1158 
 1159 //--------------------------------------------------------------------------------------------------
 1160 /**
 1161  * This function must be called to disable the IIR (Infinite Impulse Response) filter.
 1162  *
 1163  * @return LE_FAULT         Function failed.
 1164  * @return LE_OK            Function succeeded.
 1165  *
 1166  * @note The process exits, if an invalid audio stream reference is given.
 1167  */
 1168 //--------------------------------------------------------------------------------------------------
 1169 le_result_t le_audio_DisableIirFilter
 1170 (
 1171     le_audio_StreamRef_t streamRef
 1172         ///< [IN] Audio stream reference.
 1173 );
 1174 
 1175 //--------------------------------------------------------------------------------------------------
 1176 /**
 1177  * This function must be called to enable the automatic gain control on the selected audio stream.
 1178  *
 1179  * @return LE_FAULT         Function failed.
 1180  * @return LE_OK            Function succeeded.
 1181  *
 1182  * @note The process exits, if an invalid audio stream reference is given.
 1183  */
 1184 //--------------------------------------------------------------------------------------------------
 1185 le_result_t le_audio_EnableAutomaticGainControl
 1186 (
 1187     le_audio_StreamRef_t streamRef
 1188         ///< [IN] Audio stream reference.
 1189 );
 1190 
 1191 //--------------------------------------------------------------------------------------------------
 1192 /**
 1193  * This function must be called to disable the automatic gain control on the selected audio stream.
 1194  *
 1195  * @return LE_FAULT         Function failed.
 1196  * @return LE_OK            Function succeeded.
 1197  *
 1198  * @note The process exits, if an invalid audio stream reference is given.
 1199  */
 1200 //--------------------------------------------------------------------------------------------------
 1201 le_result_t le_audio_DisableAutomaticGainControl
 1202 (
 1203     le_audio_StreamRef_t streamRef
 1204         ///< [IN] Audio stream reference.
 1205 );
 1206 
 1207 //--------------------------------------------------------------------------------------------------
 1208 /**
 1209  * This function must be called to set the audio profile.
 1210  *
 1211  * @return LE_FAULT         Function failed.
 1212  * @return LE_OK            Function succeeded.
 1213  *
 1214  */
 1215 //--------------------------------------------------------------------------------------------------
 1216 le_result_t le_audio_SetProfile
 1217 (
 1218     uint32_t profile
 1219         ///< [IN] Audio profile.
 1220 );
 1221 
 1222 //--------------------------------------------------------------------------------------------------
 1223 /**
 1224  * This function must be called to get the audio profile in use.
 1225  *
 1226  * @return LE_FAULT         Function failed.
 1227  * @return LE_OK            Function succeeded.
 1228  *
 1229  */
 1230 //--------------------------------------------------------------------------------------------------
 1231 le_result_t le_audio_GetProfile
 1232 (
 1233     uint32_t* profilePtr
 1234         ///< [OUT] Audio profile.
 1235 );
 1236 
 1237 //--------------------------------------------------------------------------------------------------
 1238 /**
 1239  * Configure the PCM Sampling Rate.
 1240  *
 1241  * @return LE_FAULT         Function failed.
 1242  * @return LE_OUT_OF_RANGE  Your platform does not support the setting's value.
 1243  * @return LE_BUSY          PCM interface is already active.
 1244  * @return LE_OK            Function succeeded.
 1245  */
 1246 //--------------------------------------------------------------------------------------------------
 1247 le_result_t le_audio_SetPcmSamplingRate
 1248 (
 1249     uint32_t rate
 1250         ///< [IN] Sampling rate in Hz.
 1251 );
 1252 
 1253 //--------------------------------------------------------------------------------------------------
 1254 /**
 1255  * Configure the PCM Sampling Resolution.
 1256  *
 1257  * @return LE_FAULT         Function failed.
 1258  * @return LE_OUT_OF_RANGE  Your platform does not support the setting's value.
 1259  * @return LE_BUSY          PCM interface is already active.
 1260  * @return LE_OK            Function succeeded.
 1261  */
 1262 //--------------------------------------------------------------------------------------------------
 1263 le_result_t le_audio_SetPcmSamplingResolution
 1264 (
 1265     uint32_t bitsPerSample
 1266         ///< [IN] Sampling resolution (bits/sample).
 1267 );
 1268 
 1269 //--------------------------------------------------------------------------------------------------
 1270 /**
 1271  * Configure the PCM Companding.
 1272  *
 1273  * @return LE_FAULT         Function failed.
 1274  * @return LE_OUT_OF_RANGE  Your platform does not support the setting's value.
 1275  * @return LE_BUSY          PCM interface is already active.
 1276  * @return LE_OK            Function succeeded.
 1277  */
 1278 //--------------------------------------------------------------------------------------------------
 1279 le_result_t le_audio_SetPcmCompanding
 1280 (
 1281     le_audio_Companding_t companding
 1282         ///< [IN] Companding.
 1283 );
 1284 
 1285 //--------------------------------------------------------------------------------------------------
 1286 /**
 1287  * Retrieve the PCM Sampling Rate.
 1288  *
 1289  * @return The sampling rate in Hz.
 1290  */
 1291 //--------------------------------------------------------------------------------------------------
 1292 uint32_t le_audio_GetPcmSamplingRate
 1293 (
 1294     void
 1295 );
 1296 
 1297 //--------------------------------------------------------------------------------------------------
 1298 /**
 1299  * Retrieve the PCM Sampling Resolution.
 1300  *
 1301  * @return The sampling resolution (bits/sample).
 1302  */
 1303 //--------------------------------------------------------------------------------------------------
 1304 uint32_t le_audio_GetPcmSamplingResolution
 1305 (
 1306     void
 1307 );
 1308 
 1309 //--------------------------------------------------------------------------------------------------
 1310 /**
 1311  * Retrieve the PCM Companding.
 1312  *
 1313  * @return The PCM companding.
 1314  */
 1315 //--------------------------------------------------------------------------------------------------
 1316 le_audio_Companding_t le_audio_GetPcmCompanding
 1317 (
 1318     void
 1319 );
 1320 
 1321 //--------------------------------------------------------------------------------------------------
 1322 /**
 1323  * Get the default PCM time slot used on the current platform.
 1324  *
 1325  * @return the time slot number.
 1326  */
 1327 //--------------------------------------------------------------------------------------------------
 1328 uint32_t le_audio_GetDefaultPcmTimeSlot
 1329 (
 1330     void
 1331 );
 1332 
 1333 //--------------------------------------------------------------------------------------------------
 1334 /**
 1335  * Get the default I2S channel mode used on the current platform.
 1336  *
 1337  * @return the I2S channel mode.
 1338  */
 1339 //--------------------------------------------------------------------------------------------------
 1340 le_audio_I2SChannel_t le_audio_GetDefaultI2sMode
 1341 (
 1342     void
 1343 );
 1344 
 1345 //--------------------------------------------------------------------------------------------------
 1346 /**
 1347  * Play a file on a playback stream.
 1348  *
 1349  * @return LE_FAULT         Function failed.
 1350  * @return LE_BAD_PARAMETER Audio stream reference is invalid.
 1351  * @return LE_BUSY          Player interface is already active.
 1352  * @return LE_OK            Function succeeded.
 1353  *
 1354  * @note
 1355  *  - The fd is closed by the IPC API. To play again the same file, the fd parameter can be set
 1356  *    to LE_AUDIO_NO_FD: in this case, the previous file descriptor is re-used.
 1357  *    If the fd as to be kept on its side, the application should duplicate the fd (e.g., using
 1358  *    dup() ) before calling the API.
 1359  *    In that case, the old and new file descriptors refer to the same open file description and
 1360  *    thus share file offset. So, once a playback has reached the end of file, the application must
 1361  *    reset the file offset by using lseek on the duplicated descriptor to start the playback from
 1362  *    the beginning.
 1363  *
 1364  * @note
 1365  * -  Calling le_audio_PlayFile(<..>, LE_AUDIO_NO_FD) will rewind the audio file to the
 1366  *    beginning when a playback is already in progress.
 1367  *
 1368  */
 1369 //--------------------------------------------------------------------------------------------------
 1370 le_result_t le_audio_PlayFile
 1371 (
 1372     le_audio_StreamRef_t streamRef,
 1373         ///< [IN] Audio stream reference.
 1374     int fd
 1375         ///< [IN] File descriptor.
 1376 );
 1377 
 1378 //--------------------------------------------------------------------------------------------------
 1379 /**
 1380  * Initiate a playback sending samples over a pipe.
 1381  *
 1382  * @return LE_FAULT         Function failed.
 1383  * @return LE_BUSY          Player interface is already active.
 1384  * @return LE_OK            Function succeeded.
 1385  *
 1386  * @note The fd is closed by the IPC API. To use again the same pipe, the fd parameter can be set
 1387  * to LE_AUDIO_NO_FD: in this case, the previous file descriptor is re-used.
 1388  * If the fd as to be kept on its side, the application should duplicate the fd (e.g., using dup() )
 1389  * before calling the API.
 1390  *
 1391  * @note Playback initiated with this function must be stopped by calling le_audio_Stop().
 1392  */
 1393 //--------------------------------------------------------------------------------------------------
 1394 le_result_t le_audio_PlaySamples
 1395 (
 1396     le_audio_StreamRef_t streamRef,
 1397         ///< [IN] Audio stream reference.
 1398     int fd
 1399         ///< [IN] File descriptor.
 1400 );
 1401 
 1402 //--------------------------------------------------------------------------------------------------
 1403 /**
 1404  * Record a file on a recorder stream.
 1405  *
 1406  * @return LE_FAULT         Function failed.
 1407  * @return LE_BAD_PARAMETER The audio stream reference is invalid.
 1408  * @return LE_BUSY          Recorder interface is already active.
 1409  * @return LE_OK            Function succeeded.
 1410  *
 1411  * @note the fd is closed by the API. To record again the same file, the fd parameter can be set to
 1412  * LE_AUDIO_NO_FD: in this case, the previous file descriptor is re-used.
 1413  * If the fd as to be kept on its side, the application should duplicate the fd (e.g., using dup() )
 1414  * before calling the API.
 1415  *
 1416  */
 1417 //--------------------------------------------------------------------------------------------------
 1418 le_result_t le_audio_RecordFile
 1419 (
 1420     le_audio_StreamRef_t streamRef,
 1421         ///< [IN] Audio stream reference.
 1422     int fd
 1423         ///< [IN] File descriptor.
 1424 );
 1425 
 1426 //--------------------------------------------------------------------------------------------------
 1427 /**
 1428  * Get samples from a recorder stream.
 1429  *
 1430  * @return LE_FAULT         Function failed.
 1431  * @return LE_BUSY          Recorder interface is already active.
 1432  * @return LE_OK            Function succeeded.
 1433  *
 1434  * @note The fd is closed by the API. To use again the same pipe, the fd parameter can be set to
 1435  * LE_AUDIO_NO_FD: in this case, the previous file descriptor is re-used.
 1436  * If the fd as to be kept on its side, the application should duplicate the fd (e.g., using dup() )
 1437  * before calling the API.
 1438  *
 1439  * @note When using this function recording must be stopped by calling le_audio_Stop().
 1440  */
 1441 //--------------------------------------------------------------------------------------------------
 1442 le_result_t le_audio_GetSamples
 1443 (
 1444     le_audio_StreamRef_t streamRef,
 1445         ///< [IN] Audio stream reference.
 1446     int fd
 1447         ///< [IN] File descriptor.
 1448 );
 1449 
 1450 //--------------------------------------------------------------------------------------------------
 1451 /**
 1452  * Stop the file playback/recording.
 1453  *
 1454  * @return LE_FAULT         Function failed.
 1455  * @return LE_OK            Function succeeded.
 1456  *
 1457  * @note The used file descriptor is not deallocated, but is is rewound to the beginning.
 1458  *
 1459  */
 1460 //--------------------------------------------------------------------------------------------------
 1461 le_result_t le_audio_Stop
 1462 (
 1463     le_audio_StreamRef_t streamRef
 1464         ///< [IN] Audio stream reference.
 1465 );
 1466 
 1467 //--------------------------------------------------------------------------------------------------
 1468 /**
 1469  * Pause the file playback/recording.
 1470  *
 1471  * @return LE_FAULT         Function failed.
 1472  * @return LE_OK            Function succeeded.
 1473  *
 1474  */
 1475 //--------------------------------------------------------------------------------------------------
 1476 le_result_t le_audio_Pause
 1477 (
 1478     le_audio_StreamRef_t streamRef
 1479         ///< [IN] Audio stream reference.
 1480 );
 1481 
 1482 //--------------------------------------------------------------------------------------------------
 1483 /**
 1484  * Flush the remaining audio samples.
 1485  *
 1486  * @return LE_FAULT         Function failed.
 1487  * @return LE_OK            Function succeeded.
 1488  *
 1489  */
 1490 //--------------------------------------------------------------------------------------------------
 1491 le_result_t le_audio_Flush
 1492 (
 1493     le_audio_StreamRef_t streamRef
 1494         ///< [IN] Audio stream reference.
 1495 );
 1496 
 1497 //--------------------------------------------------------------------------------------------------
 1498 /**
 1499  * Resume a file playback/recording (need to be in pause state).
 1500  *
 1501  * @return LE_FAULT         Function failed.
 1502  * @return LE_OK            Function succeeded.
 1503  *
 1504  */
 1505 //--------------------------------------------------------------------------------------------------
 1506 le_result_t le_audio_Resume
 1507 (
 1508     le_audio_StreamRef_t streamRef
 1509         ///< [IN] Audio stream reference.
 1510 );
 1511 
 1512 //--------------------------------------------------------------------------------------------------
 1513 /**
 1514  * Set the channel number of a PCM sample.
 1515  *
 1516  * @return LE_FAULT         Function failed.
 1517  * @return LE_OK            Function succeeded.
 1518  *
 1519  */
 1520 //--------------------------------------------------------------------------------------------------
 1521 le_result_t le_audio_SetSamplePcmChannelNumber
 1522 (
 1523     le_audio_StreamRef_t streamRef,
 1524         ///< [IN] Audio stream reference.
 1525     uint32_t nbChannel
 1526         ///< [IN] Channel Number
 1527 );
 1528 
 1529 //--------------------------------------------------------------------------------------------------
 1530 /**
 1531  * Get the channel number of a PCM sample.
 1532  *
 1533  * @return LE_FAULT         Function failed.
 1534  * @return LE_OK            Function succeeded.
 1535  *
 1536  */
 1537 //--------------------------------------------------------------------------------------------------
 1538 le_result_t le_audio_GetSamplePcmChannelNumber
 1539 (
 1540     le_audio_StreamRef_t streamRef,
 1541         ///< [IN] Audio stream reference.
 1542     uint32_t* nbChannelPtr
 1543         ///< [OUT] Channel Number
 1544 );
 1545 
 1546 //--------------------------------------------------------------------------------------------------
 1547 /**
 1548  * Set the PCM sampling rate of a PCM sample.
 1549  *
 1550  * @return LE_FAULT         Function failed.
 1551  * @return LE_OK            Function succeeded.
 1552  *
 1553  */
 1554 //--------------------------------------------------------------------------------------------------
 1555 le_result_t le_audio_SetSamplePcmSamplingRate
 1556 (
 1557     le_audio_StreamRef_t streamRef,
 1558         ///< [IN] Audio stream reference.
 1559     uint32_t rate
 1560         ///< [IN] PCM sampling Rate.
 1561 );
 1562 
 1563 //--------------------------------------------------------------------------------------------------
 1564 /**
 1565  * Get the PCM sampling rate of a PCM sample.
 1566  *
 1567  * @return LE_FAULT         Function failed.
 1568  * @return LE_OK            Function succeeded.
 1569  *
 1570  */
 1571 //--------------------------------------------------------------------------------------------------
 1572 le_result_t le_audio_GetSamplePcmSamplingRate
 1573 (
 1574     le_audio_StreamRef_t streamRef,
 1575         ///< [IN] Audio stream reference.
 1576     uint32_t* ratePtr
 1577         ///< [OUT] PCM sampling Rate.
 1578 );
 1579 
 1580 //--------------------------------------------------------------------------------------------------
 1581 /**
 1582  * Set the sampling resolution (in bits per sample) of a PCM sample.
 1583  *
 1584  * @return LE_FAULT         Function failed.
 1585  * @return LE_OK            Function succeeded.
 1586  *
 1587  */
 1588 //--------------------------------------------------------------------------------------------------
 1589 le_result_t le_audio_SetSamplePcmSamplingResolution
 1590 (
 1591     le_audio_StreamRef_t streamRef,
 1592         ///< [IN] Audio stream reference.
 1593     uint32_t samplingRes
 1594         ///< [IN] Sampling resolution (in bits per sample).
 1595 );
 1596 
 1597 //--------------------------------------------------------------------------------------------------
 1598 /**
 1599  * Get the sampling resolution (in bits per sample) of a PCM sample.
 1600  *
 1601  * @return LE_FAULT         Function failed.
 1602  * @return LE_OK            Function succeeded.
 1603  *
 1604  */
 1605 //--------------------------------------------------------------------------------------------------
 1606 le_result_t le_audio_GetSamplePcmSamplingResolution
 1607 (
 1608     le_audio_StreamRef_t streamRef,
 1609         ///< [IN] Audio stream reference.
 1610     uint32_t* samplingResPtr
 1611         ///< [OUT] Sampling resolution (in bits per sample).
 1612 );
 1613 
 1614 //--------------------------------------------------------------------------------------------------
 1615 /**
 1616  * This function must be called to play a DTMF on a specific audio stream.
 1617  *
 1618  * @return LE_FORMAT_ERROR  The DTMF characters are invalid.
 1619  * @return LE_BUSY          A DTMF playback is already in progress on the playback stream.
 1620  * @return LE_FAULT         Function failed to play the DTMFs.
 1621  * @return LE_OK            Funtion succeeded.
 1622  *
 1623  * @note If the DTMF string is too long (max DTMF_MAX_LEN characters), it is a fatal
 1624  *       error, the function will not return.
 1625  * @note The process exits, if an invalid audio stream reference is given.
 1626  */
 1627 //--------------------------------------------------------------------------------------------------
 1628 le_result_t le_audio_PlayDtmf
 1629 (
 1630     le_audio_StreamRef_t streamRef,
 1631         ///< [IN] Audio stream reference.
 1632     const char* LE_NONNULL dtmf,
 1633         ///< [IN] DTMFs to play.
 1634     uint32_t duration,
 1635         ///< [IN] DTMF duration in milliseconds.
 1636     uint32_t pause
 1637         ///< [IN] Pause duration between tones in milliseconds.
 1638 );
 1639 
 1640 //--------------------------------------------------------------------------------------------------
 1641 /**
 1642  * This function must be called to ask to the Mobile Network to generate on the remote audio party
 1643  * the DTMFs.
 1644  *
 1645  * @return LE_FORMAT_ERROR  The DTMF characters are invalid.
 1646  * @return LE_BUSY          A DTMF playback is in progress.
 1647  * @return LE_FAULT         Function failed.
 1648  * @return LE_OK            Funtion succeeded.
 1649  *
 1650  * @note If the DTMF string is too long (max DTMF_MAX_LEN characters), it is a fatal
 1651  *       error, the function will not return.
 1652  */
 1653 //--------------------------------------------------------------------------------------------------
 1654 le_result_t le_audio_PlaySignallingDtmf
 1655 (
 1656     const char* LE_NONNULL dtmf,
 1657         ///< [IN] DTMFs to play.
 1658     uint32_t duration,
 1659         ///< [IN] DTMF duration in milliseconds.
 1660     uint32_t pause
 1661         ///< [IN] Pause duration between tones in milliseconds.
 1662 );
 1663 
 1664 //--------------------------------------------------------------------------------------------------
 1665 /**
 1666  * Set the encoding format of a recorder stream.
 1667  *
 1668  * @return LE_FAULT         Function failed.
 1669  * @return LE_OK            Function succeeded.
 1670  *
 1671  */
 1672 //--------------------------------------------------------------------------------------------------
 1673 le_result_t le_audio_SetEncodingFormat
 1674 (
 1675     le_audio_StreamRef_t streamRef,
 1676         ///< [IN] Audio stream reference.
 1677     le_audio_Format_t format
 1678         ///< [IN] Encoding format.
 1679 );
 1680 
 1681 //--------------------------------------------------------------------------------------------------
 1682 /**
 1683  * Get the encoding format of a recorder stream.
 1684  *
 1685  * @return LE_FAULT         Function failed.
 1686  * @return LE_OK            Function succeeded.
 1687  *
 1688  * @note A client calling this function with either an invalid
 1689  * streamRef or null out pointer parameter will be killed and the
 1690  * function will not return.
 1691  */
 1692 //--------------------------------------------------------------------------------------------------
 1693 le_result_t le_audio_GetEncodingFormat
 1694 (
 1695     le_audio_StreamRef_t streamRef,
 1696         ///< [IN] Audio stream reference.
 1697     le_audio_Format_t* formatPtr
 1698         ///< [OUT] Encoding format.
 1699 );
 1700 
 1701 //--------------------------------------------------------------------------------------------------
 1702 /**
 1703  * Set the AMR mode for AMR encoder.
 1704  *
 1705  * @return LE_FAULT         Function failed.
 1706  * @return LE_OK            Function succeeded.
 1707  *
 1708  */
 1709 //--------------------------------------------------------------------------------------------------
 1710 le_result_t le_audio_SetSampleAmrMode
 1711 (
 1712     le_audio_StreamRef_t streamRef,
 1713         ///< [IN] Audio stream reference.
 1714     le_audio_AmrMode_t mode
 1715         ///< [IN] AMR mode.
 1716 );
 1717 
 1718 //--------------------------------------------------------------------------------------------------
 1719 /**
 1720  * Get the AMR mode for AMR encoder.
 1721  *
 1722  * @return LE_FAULT         Function failed.
 1723  * @return LE_OK            Function succeeded.
 1724  *
 1725  * @note A client calling this function with a null out pointer
 1726  * parameter will be killed and the function will not return.
 1727  */
 1728 //--------------------------------------------------------------------------------------------------
 1729 le_result_t le_audio_GetSampleAmrMode
 1730 (
 1731     le_audio_StreamRef_t streamRef,
 1732         ///< [IN] Audio stream reference.
 1733     le_audio_AmrMode_t* modePtr
 1734         ///< [OUT] AMR mode.
 1735 );
 1736 
 1737 //--------------------------------------------------------------------------------------------------
 1738 /**
 1739  * Set the AMR discontinuous transmission (DTX). The DTX is activated by default.
 1740  *
 1741  * @return LE_FAULT         Function failed.
 1742  * @return LE_OK            Function succeeded.
 1743  *
 1744  */
 1745 //--------------------------------------------------------------------------------------------------
 1746 le_result_t le_audio_SetSampleAmrDtx
 1747 (
 1748     le_audio_StreamRef_t streamRef,
 1749         ///< [IN] Audio stream reference.
 1750     bool dtx
 1751         ///< [IN] DTX.
 1752 );
 1753 
 1754 //--------------------------------------------------------------------------------------------------
 1755 /**
 1756  * Get the AMR discontinuous transmission (DTX) value.
 1757  *
 1758  * @return LE_FAULT         Function failed.
 1759  * @return LE_OK            Function succeeded.
 1760  *
 1761  */
 1762 //--------------------------------------------------------------------------------------------------
 1763 le_result_t le_audio_GetSampleAmrDtx
 1764 (
 1765     le_audio_StreamRef_t streamRef,
 1766         ///< [IN] Audio stream reference.
 1767     bool* dtxPtr
 1768         ///< [OUT] DTX.
 1769 );
 1770 
 1771 //--------------------------------------------------------------------------------------------------
 1772 /**
 1773  * Set the value of a platform specific gain in the audio subsystem.
 1774  *
 1775  * @return LE_FAULT         The function failed.
 1776  * @return LE_NOT_FOUND     The specified gain's name is not recognized in your audio subsystem.
 1777  * @return LE_OUT_OF_RANGE  The gain parameter is out of range
 1778  * @return LE_OK            The function succeeded.
 1779  *
 1780  * @warning Ensure to check the names of supported gains for your specific platform.
 1781  */
 1782 //--------------------------------------------------------------------------------------------------
 1783 le_result_t le_audio_SetPlatformSpecificGain
 1784 (
 1785     const char* LE_NONNULL gainName,
 1786         ///< [IN] Name of the platform specific gain.
 1787     int32_t gain
 1788         ///< [IN] The gain value (specific to the platform)
 1789 );
 1790 
 1791 //--------------------------------------------------------------------------------------------------
 1792 /**
 1793  * Get the value of a platform specific gain in the audio subsystem.
 1794  *
 1795  * @return LE_FAULT         The function failed.
 1796  * @return LE_NOT_FOUND     The specified gain's name is not recognized in your audio subsystem.
 1797  * @return LE_OK            The function succeeded.
 1798  *
 1799  * @warning Ensure to check the names of supported gains for your specific platform.
 1800  */
 1801 //--------------------------------------------------------------------------------------------------
 1802 le_result_t le_audio_GetPlatformSpecificGain
 1803 (
 1804     const char* LE_NONNULL gainName,
 1805         ///< [IN] Name of the platform specific gain.
 1806     int32_t* gainPtr
 1807         ///< [OUT] The gain value (specific to the platform)
 1808 );
 1809 
 1810 //--------------------------------------------------------------------------------------------------
 1811 /**
 1812  * Mute the Call Waiting Tone.
 1813  *
 1814  * @return LE_FAULT         The function failed.
 1815  * @return LE_OK            The function succeeded.
 1816  */
 1817 //--------------------------------------------------------------------------------------------------
 1818 le_result_t le_audio_MuteCallWaitingTone
 1819 (
 1820     void
 1821 );
 1822 
 1823 //--------------------------------------------------------------------------------------------------
 1824 /**
 1825  * Unmute the Call Waiting Tone.
 1826  *
 1827  * @return LE_FAULT         The function failed.
 1828  * @return LE_OK            The function succeeded.
 1829  */
 1830 //--------------------------------------------------------------------------------------------------
 1831 le_result_t le_audio_UnmuteCallWaitingTone
 1832 (
 1833     void
 1834 );
 1835 
 1836 #endif // LE_AUDIO_INTERFACE_H_INCLUDE_GUARD
le_audio_SetSamplePcmSamplingRate
le_result_t le_audio_SetSamplePcmSamplingRate(le_audio_StreamRef_t streamRef, uint32_t rate)
le_audio_GetSamplePcmSamplingRate
le_result_t le_audio_GetSamplePcmSamplingRate(le_audio_StreamRef_t streamRef, uint32_t *ratePtr)
le_audio_DisableNoiseSuppressor
le_result_t le_audio_DisableNoiseSuppressor(le_audio_StreamRef_t streamRef)
LE_AUDIO_COMPANDING_NONE
Linear PCM. 
Definition: le_audio_interface.h:492
le_audio_Pause
le_result_t le_audio_Pause(le_audio_StreamRef_t streamRef)
le_audio_GetPcmSamplingResolution
uint32_t le_audio_GetPcmSamplingResolution(void)
le_audio_SetSamplePcmChannelNumber
le_result_t le_audio_SetSamplePcmChannelNumber(le_audio_StreamRef_t streamRef, uint32_t nbChannel)
le_audio_RemoveMediaHandler
void le_audio_RemoveMediaHandler(le_audio_MediaHandlerRef_t handlerRef)
le_audio_GetSamplePcmChannelNumber
le_result_t le_audio_GetSamplePcmChannelNumber(le_audio_StreamRef_t streamRef, uint32_t *nbChannelPtr)
le_audio_DisableEchoCanceller
le_result_t le_audio_DisableEchoCanceller(le_audio_StreamRef_t streamRef)
le_audio_SetPcmSamplingRate
le_result_t le_audio_SetPcmSamplingRate(uint32_t rate)
le_audio_RecordFile
le_result_t le_audio_RecordFile(le_audio_StreamRef_t streamRef, int fd)
LE_AUDIO_COMPANDING_ULAW
MU-law PCM (i.e. North America and Japan). 
Definition: le_audio_interface.h:490
le_result_t
le_result_t
Definition: le_basics.h:35
le_audio_OpenModemVoiceTx
le_audio_StreamRef_t le_audio_OpenModemVoiceTx(void)
le_audio_IsEchoCancellerEnabled
le_result_t le_audio_IsEchoCancellerEnabled(le_audio_StreamRef_t streamRef, bool *statusPtr)
le_audio_MediaEvent_t
le_audio_MediaEvent_t
Definition: le_audio_interface.h:467
le_audio_GetSampleAmrDtx
le_result_t le_audio_GetSampleAmrDtx(le_audio_StreamRef_t streamRef, bool *dtxPtr)
LE_AUDIO_AMR_WB_14_25_KBPS
AMR Wideband in 14.25kbps. 
Definition: le_audio_interface.h:567
le_audio_OpenI2sTx
le_audio_StreamRef_t le_audio_OpenI2sTx(le_audio_I2SChannel_t mode)
le_audio_RemoveDtmfDetectorHandler
void le_audio_RemoveDtmfDetectorHandler(le_audio_DtmfDetectorHandlerRef_t handlerRef)
le_audio_OpenI2sRx
le_audio_StreamRef_t le_audio_OpenI2sRx(le_audio_I2SChannel_t mode)
le_audio_GetSamples
le_result_t le_audio_GetSamples(le_audio_StreamRef_t streamRef, int fd)
le_audio_Flush
le_result_t le_audio_Flush(le_audio_StreamRef_t streamRef)
le_audio_DisableIirFilter
le_result_t le_audio_DisableIirFilter(le_audio_StreamRef_t streamRef)
le_audio_StreamRef_t
struct le_audio_Stream * le_audio_StreamRef_t
Definition: le_audio_interface.h:588
LE_AUDIO_AMR_NB_7_4_KBPS
AMR Narrowband in 7.4kbps (default value) 
Definition: le_audio_interface.h:553
LE_AUDIO_WAVE
Waveform audio file. 
Definition: le_audio_interface.h:526
le_audio_GetPlatformSpecificGain
le_result_t le_audio_GetPlatformSpecificGain(const char *LE_NONNULL gainName, int32_t *gainPtr)
le_audio_GetProfile
le_result_t le_audio_GetProfile(uint32_t *profilePtr)
le_audio_TryConnectService
le_result_t le_audio_TryConnectService(void)
le_audio_OpenUsbTx
le_audio_StreamRef_t le_audio_OpenUsbTx(void)
LE_AUDIO_I2S_REVERSE
Reverse mode (left & right reversed). 
Definition: le_audio_interface.h:513
le_audio_Connect
le_result_t le_audio_Connect(le_audio_ConnectorRef_t connectorRef, le_audio_StreamRef_t streamRef)
le_audio_Unmute
le_result_t le_audio_Unmute(le_audio_StreamRef_t streamRef)
le_audio_DtmfDetectorHandlerFunc_t
void(* le_audio_DtmfDetectorHandlerFunc_t)(le_audio_StreamRef_t streamRef, char dtmf, void *contextPtr)
Definition: le_audio_interface.h:638
LE_AUDIO_AMR_WB_8_85_KBPS
AMR Wideband in 8.85kbps. 
Definition: le_audio_interface.h:563
le_audio_OpenSpeaker
le_audio_StreamRef_t le_audio_OpenSpeaker(void)
le_audio_ConnectorRef_t
struct le_audio_Connector * le_audio_ConnectorRef_t
Definition: le_audio_interface.h:596
LE_AUDIO_AMR_NONE
Not set. 
Definition: le_audio_interface.h:543
le_audio_Format_t
le_audio_Format_t
Definition: le_audio_interface.h:524
LE_AUDIO_AMR_NB_6_7_KBPS
AMR Narrowband in 6.7kbps. 
Definition: le_audio_interface.h:551
LE_AUDIO_MEDIA_MAX
Enumerate max value. 
Definition: le_audio_interface.h:475
le_audio_EnableFirFilter
le_result_t le_audio_EnableFirFilter(le_audio_StreamRef_t streamRef)
LE_AUDIO_AMR_NB_4_75_KBPS
AMR Narrowband in 4.75kbps. 
Definition: le_audio_interface.h:545
le_audio_GetPcmSamplingRate
uint32_t le_audio_GetPcmSamplingRate(void)
LE_AUDIO_AMR
Adaptive Multi Rate. 
Definition: le_audio_interface.h:528
le_audio_MuteCallWaitingTone
le_result_t le_audio_MuteCallWaitingTone(void)
le_audio_PlaySamples
le_result_t le_audio_PlaySamples(le_audio_StreamRef_t streamRef, int fd)
le_audio_GetDefaultI2sMode
le_audio_I2SChannel_t le_audio_GetDefaultI2sMode(void)
le_audio_DtmfDetectorHandlerRef_t
struct le_audio_DtmfDetectorHandler * le_audio_DtmfDetectorHandlerRef_t
Definition: le_audio_interface.h:612
LE_AUDIO_AMR_NB_10_2_KBPS
AMR Narrowband in 10.3kbps. 
Definition: le_audio_interface.h:557
le_audio_DisableAutomaticGainControl
le_result_t le_audio_DisableAutomaticGainControl(le_audio_StreamRef_t streamRef)
le_audio_CreateConnector
le_audio_ConnectorRef_t le_audio_CreateConnector(void)
LE_AUDIO_AMR_NB_5_9_KBPS
AMR Narrowband in 5.9kbps. 
Definition: le_audio_interface.h:549
le_audio_PlayFile
le_result_t le_audio_PlayFile(le_audio_StreamRef_t streamRef, int fd)
le_audio_OpenPcmTx
le_audio_StreamRef_t le_audio_OpenPcmTx(uint32_t timeslot)
le_audio_PlayDtmf
le_result_t le_audio_PlayDtmf(le_audio_StreamRef_t streamRef, const char *LE_NONNULL dtmf, uint32_t duration, uint32_t pause)
le_audio_SetPcmCompanding
le_result_t le_audio_SetPcmCompanding(le_audio_Companding_t companding)
le_audio_GetSamplePcmSamplingResolution
le_result_t le_audio_GetSamplePcmSamplingResolution(le_audio_StreamRef_t streamRef, uint32_t *samplingResPtr)
LE_AUDIO_AMR_WB_23_85_KBPS
AMR Wideband in 23.85kbps. 
Definition: le_audio_interface.h:577
le_audio_IsNoiseSuppressorEnabled
le_result_t le_audio_IsNoiseSuppressorEnabled(le_audio_StreamRef_t streamRef, bool *statusPtr)
le_audio_AmrMode_t
le_audio_AmrMode_t
Definition: le_audio_interface.h:541
le_audio_SetProfile
le_result_t le_audio_SetProfile(uint32_t profile)
LE_AUDIO_AMR_WB_18_25_KBPS
AMR Wideband in 18.25kbps. 
Definition: le_audio_interface.h:571
le_audio_OpenModemVoiceRx
le_audio_StreamRef_t le_audio_OpenModemVoiceRx(void)
LE_AUDIO_AMR_NB_5_15_KBPS
AMR Narrowband in 5.15kbps. 
Definition: le_audio_interface.h:547
le_audio_OpenRecorder
le_audio_StreamRef_t le_audio_OpenRecorder(void)
le_audio_Resume
le_result_t le_audio_Resume(le_audio_StreamRef_t streamRef)
le_audio_DisconnectHandler_t
void(* le_audio_DisconnectHandler_t)(void *)
Definition: le_audio_interface.h:348
le_audio_Close
void le_audio_Close(le_audio_StreamRef_t streamRef)
LE_AUDIO_AMR_WB_6_6_KBPS
AMR Wideband in 6.6kbps. 
Definition: le_audio_interface.h:561
LE_AUDIO_AMR_NB_12_2_KBPS
AMR Narrowband in 12.2kbps. 
Definition: le_audio_interface.h:559
LE_AUDIO_COMPANDING_ALAW
A-law PCM (i.e. Europe and most of the rest of the world). 
Definition: le_audio_interface.h:488
LE_AUDIO_AMR_NB_7_95_KBPS
AMR Narrowband in 7.95kbps. 
Definition: le_audio_interface.h:555
le_audio_OpenPlayer
le_audio_StreamRef_t le_audio_OpenPlayer(void)
le_audio_DisconnectService
void le_audio_DisconnectService(void)
le_audio_GetDefaultPcmTimeSlot
uint32_t le_audio_GetDefaultPcmTimeSlot(void)
le_audio_Stop
le_result_t le_audio_Stop(le_audio_StreamRef_t streamRef)
le_audio_SetGain
le_result_t le_audio_SetGain(le_audio_StreamRef_t streamRef, int32_t gain)
le_audio_OpenPcmRx
le_audio_StreamRef_t le_audio_OpenPcmRx(uint32_t timeslot)
le_audio_I2SChannel_t
le_audio_I2SChannel_t
Definition: le_audio_interface.h:503
LE_AUDIO_AMR_WB_12_65_KBPS
AMR Wideband in 12.65kbps. 
Definition: le_audio_interface.h:565
LE_AUDIO_AMR_WB_23_05_KBPS
AMR Wideband in 23.05kbps. 
Definition: le_audio_interface.h:575
LE_AUDIO_I2S_MONO
Mono mode. 
Definition: le_audio_interface.h:509
le_audio_SetPcmSamplingResolution
le_result_t le_audio_SetPcmSamplingResolution(uint32_t bitsPerSample)
le_audio_MediaHandlerRef_t
struct le_audio_MediaHandler * le_audio_MediaHandlerRef_t
Definition: le_audio_interface.h:604
LE_AUDIO_AMR_WB_15_85_KBPS
AMR Wideband in 15.85kbps. 
Definition: le_audio_interface.h:569
le_audio_SetEncodingFormat
le_result_t le_audio_SetEncodingFormat(le_audio_StreamRef_t streamRef, le_audio_Format_t format)
le_audio_OpenUsbRx
le_audio_StreamRef_t le_audio_OpenUsbRx(void)
le_audio_EnableEchoCanceller
le_result_t le_audio_EnableEchoCanceller(le_audio_StreamRef_t streamRef)
le_audio_SetSampleAmrMode
le_result_t le_audio_SetSampleAmrMode(le_audio_StreamRef_t streamRef, le_audio_AmrMode_t mode)
LE_AUDIO_I2S_STEREO
Stereo mode. 
Definition: le_audio_interface.h:511
le_audio_DisableFirFilter
le_result_t le_audio_DisableFirFilter(le_audio_StreamRef_t streamRef)
LE_AUDIO_MEDIA_ERROR
Recording/playback has encountered an error. 
Definition: le_audio_interface.h:473
legato.h
LE_AUDIO_I2S_RIGHT
Right channel. 
Definition: le_audio_interface.h:507
le_audio_ConnectService
void le_audio_ConnectService(void)
le_audio_Companding_t
le_audio_Companding_t
Definition: le_audio_interface.h:486
le_audio_GetGain
le_result_t le_audio_GetGain(le_audio_StreamRef_t streamRef, int32_t *gainPtr)
le_audio_SetSampleAmrDtx
le_result_t le_audio_SetSampleAmrDtx(le_audio_StreamRef_t streamRef, bool dtx)
le_audio_SetServerDisconnectHandler
void le_audio_SetServerDisconnectHandler(le_audio_DisconnectHandler_t disconnectHandler, void *contextPtr)
le_audio_SetSamplePcmSamplingResolution
le_result_t le_audio_SetSamplePcmSamplingResolution(le_audio_StreamRef_t streamRef, uint32_t samplingRes)
LE_AUDIO_MEDIA_ENDED
Playback has reached the end of file. 
Definition: le_audio_interface.h:469
le_audio_AddMediaHandler
le_audio_MediaHandlerRef_t le_audio_AddMediaHandler(le_audio_StreamRef_t streamRef, le_audio_MediaHandlerFunc_t handlerPtr, void *contextPtr)
LE_AUDIO_AMR_WB_19_85_KBPS
AMR Wideband in 19.85kbps. 
Definition: le_audio_interface.h:573
le_audio_GetEncodingFormat
le_result_t le_audio_GetEncodingFormat(le_audio_StreamRef_t streamRef, le_audio_Format_t *formatPtr)
LE_AUDIO_I2S_LEFT
Left channel. 
Definition: le_audio_interface.h:505
le_audio_GetPcmCompanding
le_audio_Companding_t le_audio_GetPcmCompanding(void)
le_audio_AddDtmfDetectorHandler
le_audio_DtmfDetectorHandlerRef_t le_audio_AddDtmfDetectorHandler(le_audio_StreamRef_t streamRef, le_audio_DtmfDetectorHandlerFunc_t handlerPtr, void *contextPtr)
le_audio_Disconnect
void le_audio_Disconnect(le_audio_ConnectorRef_t connectorRef, le_audio_StreamRef_t streamRef)
le_audio_DeleteConnector
void le_audio_DeleteConnector(le_audio_ConnectorRef_t connectorRef)
LE_AUDIO_MEDIA_NO_MORE_SAMPLES
No more audio samples to play. 
Definition: le_audio_interface.h:471
le_audio_SetPlatformSpecificGain
le_result_t le_audio_SetPlatformSpecificGain(const char *LE_NONNULL gainName, int32_t gain)
le_audio_EnableNoiseSuppressor
le_result_t le_audio_EnableNoiseSuppressor(le_audio_StreamRef_t streamRef)
le_audio_UnmuteCallWaitingTone
le_result_t le_audio_UnmuteCallWaitingTone(void)
le_audio_PlaySignallingDtmf
le_result_t le_audio_PlaySignallingDtmf(const char *LE_NONNULL dtmf, uint32_t duration, uint32_t pause)
le_audio_GetSampleAmrMode
le_result_t le_audio_GetSampleAmrMode(le_audio_StreamRef_t streamRef, le_audio_AmrMode_t *modePtr)
le_audio_OpenMic
le_audio_StreamRef_t le_audio_OpenMic(void)
le_audio_MediaHandlerFunc_t
void(* le_audio_MediaHandlerFunc_t)(le_audio_StreamRef_t streamRef, le_audio_MediaEvent_t event, void *contextPtr)
Definition: le_audio_interface.h:622
le_audio_EnableIirFilter
le_result_t le_audio_EnableIirFilter(le_audio_StreamRef_t streamRef)
le_audio_EnableAutomaticGainControl
le_result_t le_audio_EnableAutomaticGainControl(le_audio_StreamRef_t streamRef)
le_audio_Mute
le_result_t le_audio_Mute(le_audio_StreamRef_t streamRef)