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+
+/* -----------------------------------------------------------------------------------------------------------
+Software License for The Fraunhofer FDK AAC Codec Library for Android
+
+© Copyright  1995 - 2012 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
+----------------------------------------------------------------------------------------------------------- */
+
+/**********************  Fraunhofer IIS FDK AAC Encoder lib  ******************
+
+   Author(s): M. Neusinger
+   Description: Compressor for AAC Metadata Generator
+
+******************************************************************************/
+
+#ifndef _METADATA_COMPRESSOR_H
+#define _METADATA_COMPRESSOR_H
+
+
+#include "FDK_audio.h"
+#include "common_fix.h"
+
+#include "aacenc.h"
+
+
+/**
+ *  DRC compression profiles.
+ */
+typedef enum DRC_PROFILE {
+  DRC_NONE          = 0,
+  DRC_FILMSTANDARD  = 1,
+  DRC_FILMLIGHT     = 2,
+  DRC_MUSICSTANDARD = 3,
+  DRC_MUSICLIGHT    = 4,
+  DRC_SPEECH        = 5,
+  DRC_DELAY_TEST    = 6
+
+} DRC_PROFILE;
+
+
+/**
+ *  DRC Compressor handle.
+ */
+typedef struct DRC_COMP  DRC_COMP, *HDRC_COMP;
+
+/**
+ * \brief  Open a DRC Compressor instance.
+ *
+ * Allocate memory for a compressor instance.
+ *
+ * \param phDrcComp             A pointer to a compressor handle. Initialized on return.
+ *
+ * \return
+ *          - 0, on succes.
+ *          - unequal 0, on failure.
+ */
+INT FDK_DRC_Generator_Open(
+        HDRC_COMP                      *phDrcComp
+        );
+
+
+/**
+ * \brief  Close the DRC Compressor instance.
+ *
+ * Deallocate instance and free whole memory.
+ *
+ * \param phDrcComp             Pointer to the compressor handle to be deallocated.
+ *
+ * \return
+ *          - 0, on succes.
+ *          - unequal 0, on failure.
+ */
+INT FDK_DRC_Generator_Close(
+        HDRC_COMP                      *phDrcComp
+        );
+
+/**
+ * \brief  Configure DRC Compressor.
+ *
+ * \param drcComp               Compressor handle.
+ * \param profileLine           DRC profile for line mode.
+ * \param profileRF             DRC profile for RF mode.
+ * \param blockLength           Length of processing block in samples per channel.
+ * \param sampleRate            Sampling rate in Hz.
+ * \param channelMode           Channel configuration.
+ * \param channelOrder          Channel order, MPEG or WAV.
+ * \param useWeighting          Use weighting filter for loudness calculation
+ *
+ * \return
+ *          - 0, on success,
+ *          - unequal 0, on failure
+ */
+INT FDK_DRC_Generator_Initialize(
+        HDRC_COMP                       drcComp,
+        const DRC_PROFILE               profileLine,
+        const DRC_PROFILE               profileRF,
+        const INT                       blockLength,
+        const UINT                      sampleRate,
+        const CHANNEL_MODE              channelMode,
+        const CHANNEL_ORDER             channelOrder,
+        const UCHAR                     useWeighting
+        );
+
+/**
+ * \brief  Calculate DRC Compressor Gain.
+ *
+ * \param drcComp               Compressor handle.
+ * \param inSamples             Pointer to interleaved input audio samples.
+ * \param dialnorm              Dialog Level in dB (typically -31...-1).
+ * \param drc_TargetRefLevel
+ * \param comp_TargetRefLevel
+ * \param clev                  Downmix center mix factor (typically 0.707, 0.595 or 0.5)
+ * \param slev                  Downmix surround mix factor (typically 0.707, 0.5, or 0)
+ * \param dynrng                Pointer to variable receiving line mode DRC gain in dB
+ * \param compr                 Pointer to variable receiving RF mode DRC gain in dB
+ *
+ * \return
+ *          - 0, on success,
+ *          - unequal 0, on failure
+ */
+INT FDK_DRC_Generator_Calc(
+        HDRC_COMP                       drcComp,
+        const INT_PCM * const           inSamples,
+        const INT                       dialnorm,
+        const INT                       drc_TargetRefLevel,
+        const INT                       comp_TargetRefLevel,
+        FIXP_DBL                        clev,
+        FIXP_DBL                        slev,
+        INT * const                     dynrng,
+        INT * const                     compr
+        );
+
+
+/**
+ * \brief  Configure DRC Compressor Profile.
+ *
+ * \param drcComp               Compressor handle.
+ * \param profileLine           DRC profile for line mode.
+ * \param profileRF             DRC profile for RF mode.
+ *
+ * \return
+ *          - 0, on success,
+ *          - unequal 0, on failure
+ */
+INT FDK_DRC_Generator_setDrcProfile(
+        HDRC_COMP                       drcComp,
+        const DRC_PROFILE               profileLine,
+        const DRC_PROFILE               profileRF
+        );
+
+
+/**
+ * \brief  Get DRC profile for line mode.
+ *
+ * \param drcComp               Compressor handle.
+ *
+ * \return  Current Profile.
+ */
+DRC_PROFILE FDK_DRC_Generator_getDrcProfile(
+        const HDRC_COMP                 drcComp
+        );
+
+
+/**
+ * \brief  Get DRC profile for RF mode.
+ *
+ * \param drcComp               Compressor handle.
+ *
+ * \return  Current Profile.
+ */
+DRC_PROFILE FDK_DRC_Generator_getCompProfile(
+        const HDRC_COMP                 drcComp
+        );
+
+
+#endif /* _METADATA_COMPRESSOR_H */
+