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+/* -----------------------------------------------------------------------------
+Software License for The Fraunhofer FDK AAC Codec Library for Android
+
+© Copyright  1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten
+Forschung e.V. All rights reserved.
+
+ 1.    INTRODUCTION
+The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software
+that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding
+scheme for digital audio. This FDK AAC Codec software is intended to be used on
+a wide variety of Android devices.
+
+AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient
+general perceptual audio codecs. AAC-ELD is considered the best-performing
+full-bandwidth communications codec by independent studies and is widely
+deployed. AAC has been standardized by ISO and IEC as part of the MPEG
+specifications.
+
+Patent licenses for necessary patent claims for the FDK AAC Codec (including
+those of Fraunhofer) may be obtained through Via Licensing
+(www.vialicensing.com) or through the respective patent owners individually for
+the purpose of encoding or decoding bit streams in products that are compliant
+with the ISO/IEC MPEG audio standards. Please note that most manufacturers of
+Android devices already license these patent claims through Via Licensing or
+directly from the patent owners, and therefore FDK AAC Codec software may
+already be covered under those patent licenses when it is used for those
+licensed purposes only.
+
+Commercially-licensed AAC software libraries, including floating-point versions
+with enhanced sound quality, are also available from Fraunhofer. Users are
+encouraged to check the Fraunhofer website for additional applications
+information and documentation.
+
+2.    COPYRIGHT LICENSE
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted without payment of copyright license fees provided that you
+satisfy the following conditions:
+
+You must retain the complete text of this software license in redistributions of
+the FDK AAC Codec or your modifications thereto in source code form.
+
+You must retain the complete text of this software license in the documentation
+and/or other materials provided with redistributions of the FDK AAC Codec or
+your modifications thereto in binary form. You must make available free of
+charge copies of the complete source code of the FDK AAC Codec and your
+modifications thereto to recipients of copies in binary form.
+
+The name of Fraunhofer may not be used to endorse or promote products derived
+from this library without prior written permission.
+
+You may not charge copyright license fees for anyone to use, copy or distribute
+the FDK AAC Codec software or your modifications thereto.
+
+Your modified versions of the FDK AAC Codec must carry prominent notices stating
+that you changed the software and the date of any change. For modified versions
+of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android"
+must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK
+AAC Codec Library for Android."
+
+3.    NO PATENT LICENSE
+
+NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without
+limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE.
+Fraunhofer provides no warranty of patent non-infringement with respect to this
+software.
+
+You may use this FDK AAC Codec software or modifications thereto only for
+purposes that are authorized by appropriate patent licenses.
+
+4.    DISCLAIMER
+
+This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright
+holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
+including but not limited to the implied warranties of merchantability and
+fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary,
+or consequential damages, including but not limited to procurement of substitute
+goods or services; loss of use, data, or profits, or business interruption,
+however caused and on any theory of liability, whether in contract, strict
+liability, or tort (including negligence), arising in any way out of the use of
+this software, even if advised of the possibility of such damage.
+
+5.    CONTACT INFORMATION
+
+Fraunhofer Institute for Integrated Circuits IIS
+Attention: Audio and Multimedia Departments - FDK AAC LL
+Am Wolfsmantel 33
+91058 Erlangen, Germany
+
+www.iis.fraunhofer.de/amm
+amm-info@iis.fraunhofer.de
+----------------------------------------------------------------------------- */
+
+/**************************** AAC encoder library ******************************
+
+   Author(s):   Markus Lohwasser
+
+   Description: Mpeg Surround library interface functions
+
+*******************************************************************************/
+
+#ifndef MPS_MAIN_H
+#define MPS_MAIN_H
+
+/* Includes ******************************************************************/
+#include "aacenc.h"
+#include "FDK_audio.h"
+#include "machine_type.h"
+
+/* Defines *******************************************************************/
+typedef enum {
+  MPS_ENCODER_OK = 0x0000, /*!< No error happened. All fine. */
+  MPS_ENCODER_INVALID_HANDLE =
+      0x0020, /*!< Handle passed to function call was invalid. */
+  MPS_ENCODER_MEMORY_ERROR = 0x0021, /*!< Memory allocation failed. */
+  MPS_ENCODER_INIT_ERROR = 0x0040,   /*!< General initialization error. */
+  MPS_ENCODER_ENCODE_ERROR =
+      0x0060 /*!< The encoding process was interrupted by an unexpected error.
+              */
+
+} MPS_ENCODER_ERROR;
+
+/* Data Types ****************************************************************/
+
+/**
+ *  MPEG Surround Encoder interface handle.
+ */
+typedef struct MPS_ENCODER MPS_ENCODER, *HANDLE_MPS_ENCODER;
+
+/* Function / Class Declarations *********************************************/
+
+/**
+ * \brief  Open a Mpeg Surround Encoder instance.
+ *
+ * \phMpsEnc                    A pointer to a MPS handle to be allocated.
+ * Initialized on return.
+ *
+ * \return
+ *          - MPS_ENCODER_OK, on succes.
+ *          - MPS_ENCODER_INVALID_HANDLE, MPS_ENCODER_MEMORY_ERROR, on failure.
+ */
+MPS_ENCODER_ERROR FDK_MpegsEnc_Open(HANDLE_MPS_ENCODER *phMpsEnc);
+
+/**
+ * \brief  Close the Mpeg Surround Encoder instance.
+ *
+ * Deallocate instance and free whole memory.
+ *
+ * \param phMpsEnc              Pointer to the MPS handle to be deallocated.
+ *
+ * \return
+ *          - MPS_ENCODER_OK, on succes.
+ *          - MPS_ENCODER_INVALID_HANDLE, on failure.
+ */
+MPS_ENCODER_ERROR FDK_MpegsEnc_Close(HANDLE_MPS_ENCODER *phMpsEnc);
+
+/**
+ * \brief  Initialize a Mpeg Surround Encoder instance.
+ *
+ * \param hMpsEnc                   MPS Encoder handle.
+ * \param audioObjectType           Audio object type.
+ * \param samplingrate              Sampling rate in Hz of audio input signal.
+ * \param bitrate                   Encder target bitrate.
+ * \param sbrRatio                  SBR sampling rate ratio.
+ * \param framelength               Number of samples to be processes within one
+ * frame.
+ * \param inputBufferSizePerChannel Size of input buffer per channel.
+ * \param coreCoderDelay            Core coder delay.
+ *
+ * \return
+ *          - MPS_ENCODER_OK, on succes.
+ *          - MPS_ENCODER_INVALID_HANDLE, MPS_ENCODER_ENCODE_ERROR, on failure.
+ */
+MPS_ENCODER_ERROR FDK_MpegsEnc_Init(HANDLE_MPS_ENCODER hMpsEnc,
+                                    const AUDIO_OBJECT_TYPE audioObjectType,
+                                    const UINT samplingrate, const UINT bitrate,
+                                    const UINT sbrRatio, const UINT framelength,
+                                    const UINT inputBufferSizePerChannel,
+                                    const UINT coreCoderDelay);
+
+/**
+ * \brief  Calculate Mpeg Surround processing.
+ *
+ * This fuction applies the MPS processing. The MPS side info will be written to
+ * extension payload. The input audio data will be overwritten by the calculated
+ * downmix.
+ *
+ * \param hMpsEnc               MPS Encoder handle.
+ * \param pAudioSamples         Pointer to audio input/output data.
+ * \param nAudioSamples         Number of input audio samples to be prcessed.
+ * \param pMpsExtPayload        Pointer to extension payload to be filled on
+ * return.
+ *
+ * \return
+ *          - MPS_ENCODER_OK, on succes.
+ *          - MPS_ENCODER_INVALID_HANDLE, MPS_ENCODER_ENCODE_ERROR, on failure.
+ */
+MPS_ENCODER_ERROR FDK_MpegsEnc_Process(HANDLE_MPS_ENCODER hMpsEnc,
+                                       INT_PCM *const pAudioSamples,
+                                       const INT nAudioSamples,
+                                       AACENC_EXT_PAYLOAD *pMpsExtPayload);
+
+/**
+ * \brief  Write Spatial Specific Config.
+ *
+ * This function can be called via call back from the transport library to write
+ * the Spatial Specific Config to given bitstream buffer.
+ *
+ * \param hMpsEnc               MPS Encoder handle.
+ * \param hBs                   Bitstream buffer handle.
+ *
+ * \return                      Number of written bits.
+ */
+INT FDK_MpegsEnc_WriteSpatialSpecificConfig(HANDLE_MPS_ENCODER hMpsEnc,
+                                            HANDLE_FDK_BITSTREAM hBs);
+
+/**
+ * \brief  Get closest valid bitrate supported by given config.
+ *
+ * \param audioObjectType       Audio object type.
+ * \param channelMode           Encoder channel mode.
+ * \param samplingrate          Sampling rate in Hz of audio input signal.
+ * \param sbrRatio              SBR sampling rate ratio.
+ * \param bitrate               The desired target bitrate.
+ *
+ * \return                      Closest valid bitrate to given bitrate..
+ */
+INT FDK_MpegsEnc_GetClosestBitRate(const AUDIO_OBJECT_TYPE audioObjectType,
+                                   const CHANNEL_MODE channelMode,
+                                   const UINT samplingrate, const UINT sbrRatio,
+                                   const UINT bitrate);
+
+/**
+ * \brief  Get codec delay.
+ *
+ * This function returns delay of the whole en-/decoded signal, including
+ * corecoder delay.
+ *
+ * \param hMpsEnc               MPS Encoder handle.
+ *
+ * \return                      Codec delay in samples.
+ */
+INT FDK_MpegsEnc_GetDelay(HANDLE_MPS_ENCODER hMpsEnc);
+
+/**
+ * \brief  Get Mpeg Surround Decoder delay.
+ *
+ * This function returns delay of the Mpeg Surround decoder.
+ *
+ * \param hMpsEnc               MPS Encoder handle.
+ *
+ * \return                      Mpeg Surround Decoder delay in samples.
+ */
+INT FDK_MpegsEnc_GetDecDelay(HANDLE_MPS_ENCODER hMpsEnc);
+
+/**
+ * \brief  Get information about encoder library build.
+ *
+ * Fill a given LIB_INFO structure with library version information.
+ *
+ * \param info  Pointer to an allocated LIB_INFO struct.
+ *
+ * \return
+ *          - MPS_ENCODER_OK, on succes.
+ *          - MPS_ENCODER_INVALID_HANDLE, MPS_ENCODER_INIT_ERROR, on failure.
+ */
+MPS_ENCODER_ERROR FDK_MpegsEnc_GetLibInfo(LIB_INFO *info);
+
+#endif /* MPS_MAIN_H */