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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
+----------------------------------------------------------------------------- */
+
+/******************* MPEG transport format decoder library *********************
+
+ Author(s): Manuel Jander
+
+ Description: MPEG Transport decoder
+
+*******************************************************************************/
+
+#ifndef TPDEC_LIB_H
+#define TPDEC_LIB_H
+
+#include "tp_data.h"
+
+#include "FDK_bitstream.h"
+
+typedef enum {
+ TRANSPORTDEC_OK = 0, /*!< All fine. */
+
+ /* Synchronization errors. Wait for new input data and try again. */
+ tpdec_sync_error_start = 0x100,
+ TRANSPORTDEC_NOT_ENOUGH_BITS, /*!< Out of bits. Provide more bits and try
+ again. */
+ TRANSPORTDEC_SYNC_ERROR, /*!< No sync was found or sync got lost. Keep trying.
+ */
+ tpdec_sync_error_end,
+
+ /* Decode errors. Mostly caused due to bit errors. */
+ tpdec_decode_error_start = 0x400,
+ TRANSPORTDEC_PARSE_ERROR, /*!< Bitstream data showed inconsistencies (wrong
+ syntax). */
+ TRANSPORTDEC_UNSUPPORTED_FORMAT, /*!< Unsupported format or feature found in
+ the bitstream data. */
+ TRANSPORTDEC_CRC_ERROR, /*!< CRC error encountered in bitstream data. */
+ tpdec_decode_error_end,
+
+ /* Fatal errors. Stop immediately on one of these errors! */
+ tpdec_fatal_error_start = 0x200,
+ TRANSPORTDEC_UNKOWN_ERROR, /*!< An unknown error occured. */
+ TRANSPORTDEC_INVALID_PARAMETER, /*!< An invalid parameter was passed to a
+ function. */
+ TRANSPORTDEC_NEED_TO_RESTART, /*!< The decoder needs to be restarted, since
+ the requiered configuration change cannot
+ be performed. */
+ TRANSPORTDEC_TOO_MANY_BITS, /*!< In case of packet based formats: Supplied
+ number of bits exceed the size of the
+ internal bit buffer. */
+ tpdec_fatal_error_end
+
+} TRANSPORTDEC_ERROR;
+
+/** Macro to identify decode errors. */
+#define TPDEC_IS_DECODE_ERROR(err) \
+ (((err >= tpdec_decode_error_start) && (err <= tpdec_decode_error_end)) ? 1 \
+ : 0)
+/** Macro to identify fatal errors. */
+#define TPDEC_IS_FATAL_ERROR(err) \
+ (((err >= tpdec_fatal_error_start) && (err <= tpdec_fatal_error_end)) ? 1 : 0)
+
+/**
+ * \brief Parameter identifiers for transportDec_SetParam()
+ */
+typedef enum {
+ TPDEC_PARAM_MINIMIZE_DELAY = 1, /** Delay minimization strategy. 0: none, 1:
+ discard as many frames as possible. */
+ TPDEC_PARAM_EARLY_CONFIG, /** Enable early config discovery. */
+ TPDEC_PARAM_IGNORE_BUFFERFULLNESS, /** Ignore buffer fullness. */
+ TPDEC_PARAM_SET_BITRATE, /** Set average bit rate for bit stream interruption
+ frame misses estimation. */
+ TPDEC_PARAM_RESET, /** Reset transport decoder instance status. */
+ TPDEC_PARAM_BURST_PERIOD, /** Set data reception burst period in mili seconds.
+ */
+ TPDEC_PARAM_TARGETLAYOUT, /** Set CICP target layout */
+ TPDEC_PARAM_FORCE_CONFIG_CHANGE, /** Force config change for next received
+ config */
+ TPDEC_PARAM_USE_ELEM_SKIPPING
+} TPDEC_PARAM;
+
+/*!
+ \brief Reset Program Config Element.
+ \param pPce Program Config Element structure.
+ \return void
+*/
+void CProgramConfig_Reset(CProgramConfig *pPce);
+
+/*!
+ \brief Initialize Program Config Element.
+ \param pPce Program Config Element structure.
+ \return void
+*/
+void CProgramConfig_Init(CProgramConfig *pPce);
+
+/*!
+ \brief Inquire state of present Program Config Element
+ structure. \param pPce Program Config Element structure. \return
+ 1 if the PCE structure is filled correct, 0 if no valid PCE present.
+*/
+int CProgramConfig_IsValid(const CProgramConfig *pPce);
+
+/*!
+ \brief Read Program Config Element.
+ \param pPce Program Config Element structure.
+ \param bs Bitstream buffer to read from.
+ \param alignAnchor Align bitstream to alignAnchor bits after all read
+ operations. \return void
+*/
+void CProgramConfig_Read(CProgramConfig *pPce, HANDLE_FDK_BITSTREAM bs,
+ UINT alignAnchor);
+
+/*!
+ \brief Compare two Program Config Elements.
+ \param pPce1 Pointer to first Program Config Element structure.
+ \param pPce2 Pointer to second Program Config Element structure.
+ \return -1 if PCEs are completely different,
+ 0 if PCEs are completely equal,
+ 1 if PCEs are different but have the same channel
+ config, 2 if PCEs have different channel config but same number of channels.
+*/
+int CProgramConfig_Compare(const CProgramConfig *const pPce1,
+ const CProgramConfig *const pPce2);
+
+/*!
+ \brief Get a Program Config Element that matches the predefined
+ MPEG-4 channel configurations 1-14. \param pPce Program Config
+ Element structure. \param channelConfig MPEG-4 channel configuration. \return
+ void
+*/
+void CProgramConfig_GetDefault(CProgramConfig *pPce, const UINT channelConfig);
+
+/**
+ * \brief Lookup and verify a given element. The decoder calls this
+ * method with every new element ID found in the bitstream.
+ *
+ * \param pPce A valid Program config structure.
+ * \param chConfig MPEG-4 channel configuration.
+ * \param tag Tag of the current element to be looked up.
+ * \param channelIdx The current channel count of the decoder parser.
+ * \param chMapping Array to store the canonical channel mapping indexes.
+ * \param chType Array to store the audio channel type.
+ * \param chIndex Array to store the individual audio channel type index.
+ * \param chDescrLen Length of the output channel description array.
+ * \param elMapping Pointer where the canonical element index is stored.
+ * \param elType The element id of the current element to be looked up.
+ *
+ * \return Non-zero if the element belongs to the current program,
+ * zero if it does not.
+ */
+int CProgramConfig_LookupElement(CProgramConfig *pPce, UINT chConfig,
+ const UINT tag, const UINT channelIdx,
+ UCHAR chMapping[], AUDIO_CHANNEL_TYPE chType[],
+ UCHAR chIndex[], const UINT chDescrLen,
+ UCHAR *elMapping, MP4_ELEMENT_ID elList[],
+ MP4_ELEMENT_ID elType);
+
+/**
+ * \brief Get table of channel indices in the order of their
+ * appearance in by the program config field.
+ * \param pPce A valid program config structure.
+ * \param pceChMap Array to store the channel mapping indices like they
+ * appear in the PCE.
+ * \param pceChMapLen Lenght of the channel mapping index array (pceChMap).
+ *
+ * \return Non-zero if any error occured otherwise zero.
+ */
+int CProgramConfig_GetPceChMap(const CProgramConfig *pPce, UCHAR pceChMap[],
+ const UINT pceChMapLen);
+
+/**
+ * \brief Get table of elements in canonical order from a
+ * give program config field.
+ * \param pPce A valid program config structure.
+ * \param table An array where the element IDs are stored.
+ * \param elListSize The length of the table array.
+ * \param pChMapIdx Pointer to a field receiving the corresponding
+ * implicit channel configuration index of the given
+ * PCE. If none can be found it receives the value 0.
+ * \return Total element count including all SCE, CPE and LFE.
+ */
+int CProgramConfig_GetElementTable(const CProgramConfig *pPce,
+ MP4_ELEMENT_ID table[], const INT elListSize,
+ UCHAR *pChMapIdx);
+
+/**
+ * \brief Get channel description (type and index) for implicit
+ configurations (chConfig > 0) in MPEG canonical order.
+ * \param chConfig MPEG-4 channel configuration.
+ * \param chType Array to store the audio channel type.
+ * \param chIndex Array to store the individual audio channel type index.
+ * \return void
+ */
+void CProgramConfig_GetChannelDescription(const UINT chConfig,
+ const CProgramConfig *pPce,
+ AUDIO_CHANNEL_TYPE chType[],
+ UCHAR chIndex[]);
+
+/**
+ * \brief Initialize a given AudioSpecificConfig structure.
+ * \param pAsc A pointer to an allocated CSAudioSpecificConfig struct.
+ * \return void
+ */
+void AudioSpecificConfig_Init(CSAudioSpecificConfig *pAsc);
+
+/**
+ * \brief Parse a AudioSpecificConfig from a given bitstream handle.
+ *
+ * \param pAsc A pointer to an allocated
+ * CSAudioSpecificConfig struct.
+ * \param hBs Bitstream handle.
+ * \param fExplicitBackwardCompatible Do explicit backward compatibility
+ * parsing if set (flag).
+ * \param cb pointer to structure holding callback information
+ * \param configMode Config modes: memory allocation mode or config change
+ * detection mode.
+ * \param configChanged Indicates a config change.
+ * \param m_aot in case of unequal AOT_NULL_OBJECT only the specific config is
+ * parsed.
+ *
+ * \return Total element count including all SCE, CPE and LFE.
+ */
+TRANSPORTDEC_ERROR AudioSpecificConfig_Parse(
+ CSAudioSpecificConfig *pAsc, HANDLE_FDK_BITSTREAM hBs,
+ int fExplicitBackwardCompatible, CSTpCallBacks *cb, UCHAR configMode,
+ UCHAR configChanged, AUDIO_OBJECT_TYPE m_aot);
+
+/* CELP stuff */
+enum { MPE = 0, RPE = 1, fs8KHz = 0, fs16KHz = 1 };
+
+/* Defintion of flags that can be passed to transportDecOpen() */
+#define TP_FLAG_MPEG4 1
+
+/* Capability flags */
+#define CAPF_TPDEC_ADIF \
+ 0x00001000 /**< Flag indicating support for ADIF transport format. */
+#define CAPF_TPDEC_ADTS \
+ 0x00002000 /**< Flag indicating support for ADTS transport format. */
+#define CAPF_TPDEC_LOAS \
+ 0x00004000 /**< Flag indicating support for LOAS transport format. */
+#define CAPF_TPDEC_LATM \
+ 0x00008000 /**< Flag indicating support for LATM transport format. */
+#define CAPF_TPDEC_RAWPACKETS \
+ 0x00010000 /**< Flag indicating support for raw packets transport format. */
+
+typedef struct TRANSPORTDEC *HANDLE_TRANSPORTDEC;
+
+/**
+ * \brief Configure Transport Decoder via a binary coded AudioSpecificConfig or
+ * StreamMuxConfig. The previously requested configuration callback will be
+ * called as well. The buffer conf must containt a SMC in case of
+ * LOAS/LATM transport format, and an ASC elseways.
+ *
+ * \param hTp Handle of a transport decoder.
+ * \param conf UCHAR buffer of the binary coded config (ASC or SMC).
+ * \param length The length in bytes of the conf buffer.
+ *
+ * \return Error code.
+ */
+TRANSPORTDEC_ERROR transportDec_OutOfBandConfig(const HANDLE_TRANSPORTDEC hTp,
+ UCHAR *conf, const UINT length,
+ const UINT layer);
+
+/**
+ * \brief Configure Transport Decoder via a binary coded USAC/RSV603DA Config.
+ * The buffer newConfig contains a binary coded USAC/RSV603DA config of
+ * length newConfigLength bytes. If the new config and the previous config are
+ * different configChanged is set to 1 otherwise it is set to 0.
+ *
+ * \param hTp Handle of a transport decoder.
+ * \param newConfig buffer of the binary coded config.
+ * \param newConfigLength Length of new config in bytes.
+ * \param buildUpStatus Indicates build up status: off|on|idle.
+ * \param configChanged Indicates if config changed.
+ * \param layer Instance layer.
+ *
+ * \return Error code.
+ */
+TRANSPORTDEC_ERROR transportDec_InBandConfig(
+ const HANDLE_TRANSPORTDEC hTp, UCHAR *newConfig, const UINT newConfigLength,
+ const UCHAR buildUpStatus, UCHAR *configChanged, const UINT layer,
+ UCHAR *implicitExplicitCfgDiff);
+
+/**
+ * \brief Open Transport medium for reading.
+ *
+ * \param transportDecFmt Format of the transport decoder medium to be accessed.
+ * \param flags Transport decoder flags. Currently only TP_FLAG_MPEG4,
+ * which signals a MPEG4 capable decoder (relevant for ADTS only).
+ *
+ * \return A pointer to a valid and allocated HANDLE_TRANSPORTDEC or a null
+ * pointer on failure.
+ */
+HANDLE_TRANSPORTDEC transportDec_Open(TRANSPORT_TYPE transportDecFmt,
+ const UINT flags, const UINT nrOfLayer);
+
+/**
+ * \brief Register configuration change callback.
+ * \param hTp Handle of transport decoder.
+ * \param cbUpdateConfig Pointer to a callback function to handle audio config
+ * changes.
+ * \param user_data void pointer for user data passed to the callback as
+ * first parameter.
+ * \return 0 on success.
+ */
+int transportDec_RegisterAscCallback(HANDLE_TRANSPORTDEC hTp,
+ const cbUpdateConfig_t cbUpdateConfig,
+ void *user_data);
+
+/**
+ * \brief Register free memory callback.
+ * \param hTp Handle of transport decoder.
+ * \param cbFreeMem Pointer to a callback function to free config dependent
+ * memory.
+ * \param user_data void pointer for user data passed to the callback as
+ * first parameter.
+ * \return 0 on success.
+ */
+int transportDec_RegisterFreeMemCallback(HANDLE_TRANSPORTDEC hTp,
+ const cbFreeMem_t cbFreeMem,
+ void *user_data);
+
+/**
+ * \brief Register config change control callback.
+ * \param hTp Handle of transport decoder.
+ * \param cbCtrlCFGChange Pointer to a callback function for config change
+ * control.
+ * \param user_data void pointer for user data passed to the callback as
+ * first parameter.
+ * \return 0 on success.
+ */
+int transportDec_RegisterCtrlCFGChangeCallback(
+ HANDLE_TRANSPORTDEC hTp, const cbCtrlCFGChange_t cbCtrlCFGChange,
+ void *user_data);
+
+/**
+ * \brief Register SSC parser callback.
+ * \param hTp Handle of transport decoder.
+ * \param cbUpdateConfig Pointer to a callback function to handle SSC parsing.
+ * \param user_data void pointer for user data passed to the callback as
+ * first parameter.
+ * \return 0 on success.
+ */
+int transportDec_RegisterSscCallback(HANDLE_TRANSPORTDEC hTp,
+ const cbSsc_t cbSscParse, void *user_data);
+
+/**
+ * \brief Register SBR header parser callback.
+ * \param hTp Handle of transport decoder.
+ * \param cbUpdateConfig Pointer to a callback function to handle SBR header
+ * parsing.
+ * \param user_data void pointer for user data passed to the callback as
+ * first parameter.
+ * \return 0 on success.
+ */
+int transportDec_RegisterSbrCallback(HANDLE_TRANSPORTDEC hTpDec,
+ const cbSbr_t cbSbr, void *user_data);
+
+/**
+ * \brief Register USAC SC parser callback.
+ * \param hTp Handle of transport decoder.
+ * \param cbUpdateConfig Pointer to a callback function to handle USAC SC
+ * parsing.
+ * \param user_data void pointer for user data passed to the callback as
+ * first parameter.
+ * \return 0 on success.
+ */
+int transportDec_RegisterUsacCallback(HANDLE_TRANSPORTDEC hTpDec,
+ const cbUsac_t cbUsac, void *user_data);
+
+/**
+ * \brief Register uniDrcConfig and loudnessInfoSet parser
+ * callback.
+ * \param hTp Handle of transport decoder.
+ * \param cbUpdateConfig Pointer to a callback function to handle uniDrcConfig
+ * and loudnessInfoSet parsing.
+ * \param user_data void pointer for user data passed to the callback as
+ * first parameter.
+ * \return 0 on success.
+ */
+int transportDec_RegisterUniDrcConfigCallback(HANDLE_TRANSPORTDEC hTpDec,
+ const cbUniDrc_t cbUniDrc,
+ void *user_data,
+ UINT *pLoudnessInfoSetPosition);
+
+/**
+ * \brief Fill internal input buffer with bitstream data from the external input
+ * buffer. The function only copies such data as long as the decoder-internal
+ * input buffer is not full. So it grabs whatever it can from pBuffer and
+ * returns information (bytesValid) so that at a subsequent call of
+ * %transportDec_FillData(), the right position in pBuffer can be determined to
+ * grab the next data.
+ *
+ * \param hTp Handle of transportDec.
+ * \param pBuffer Pointer to external input buffer.
+ * \param bufferSize Size of external input buffer. This argument is required
+ * because decoder-internally we need the information to calculate the offset to
+ * pBuffer, where the next available data is, which is then
+ * fed into the decoder-internal buffer (as much as
+ * possible). Our example framework implementation fills the
+ * buffer at pBuffer again, once it contains no available valid bytes anymore
+ * (meaning bytesValid equal 0).
+ * \param bytesValid Number of bitstream bytes in the external bitstream buffer
+ * that have not yet been copied into the decoder's internal bitstream buffer by
+ * calling this function. The value is updated according to
+ * the amount of newly copied bytes.
+ * \param layer The layer the bitstream belongs to.
+ * \return Error code.
+ */
+TRANSPORTDEC_ERROR transportDec_FillData(const HANDLE_TRANSPORTDEC hTp,
+ UCHAR *pBuffer, const UINT bufferSize,
+ UINT *pBytesValid, const INT layer);
+
+/**
+ * \brief Get transportDec bitstream handle.
+ * \param hTp Pointer to a transport decoder handle.
+ * \return HANDLE_FDK_BITSTREAM bitstream handle.
+ */
+HANDLE_FDK_BITSTREAM transportDec_GetBitstream(const HANDLE_TRANSPORTDEC hTp,
+ const UINT layer);
+
+/**
+ * \brief Get transport format.
+ * \param hTp Pointer to a transport decoder handle.
+ * \return The transport format.
+ */
+TRANSPORT_TYPE transportDec_GetFormat(const HANDLE_TRANSPORTDEC hTp);
+
+/**
+ * \brief Get the current buffer fullness value.
+ *
+ * \param hTp Handle of a transport decoder.
+ *
+ * \return Buffer fullness
+ */
+INT transportDec_GetBufferFullness(const HANDLE_TRANSPORTDEC hTp);
+
+/**
+ * \brief Close and deallocate transportDec.
+ * \param phTp Pointer to a previously allocated transport decoder handle.
+ * \return void
+ */
+void transportDec_Close(HANDLE_TRANSPORTDEC *phTp);
+
+/**
+ * \brief Read one access unit from the transportDec medium.
+ * \param hTp Handle of transportDec.
+ * \param length On return, this value is overwritten with the actual access
+ * unit length in bits. Set to -1 if length is unknown.
+ * \return Error code.
+ */
+TRANSPORTDEC_ERROR transportDec_ReadAccessUnit(const HANDLE_TRANSPORTDEC hTp,
+ const UINT layer);
+
+/**
+ * \brief Get AudioSpecificConfig.
+ * \param hTp Handle of transportDec.
+ * \param layer Transport layer.
+ * \param asc Pointer to AudioSpecificConfig.
+ * \return Error code.
+ */
+TRANSPORTDEC_ERROR transportDec_GetAsc(const HANDLE_TRANSPORTDEC hTp,
+ const UINT layer,
+ CSAudioSpecificConfig *asc);
+
+/**
+ * \brief Get the remaining amount of bits of the current access unit. The
+ * result can be below zero, meaning that too many bits have been read.
+ * \param hTp Handle of transportDec.
+ * \return amount of remaining bits.
+ */
+INT transportDec_GetAuBitsRemaining(const HANDLE_TRANSPORTDEC hTp,
+ const UINT layer);
+
+/**
+ * \brief Get the total amount of bits of the current access unit.
+ * \param hTp Handle of transportDec.
+ * \return amount of total bits.
+ */
+INT transportDec_GetAuBitsTotal(const HANDLE_TRANSPORTDEC hTp,
+ const UINT layer);
+
+/**
+ * \brief This function is required to be called when the decoder has
+ * finished parsing one Access Unit for bitstream housekeeping.
+ * \param hTp Transport Handle.
+ * \return Error code.
+ */
+TRANSPORTDEC_ERROR transportDec_EndAccessUnit(const HANDLE_TRANSPORTDEC hTp);
+
+/**
+ * \brief Obtain the amount of missing access units if applicable in case
+ * of a bit stream synchronization error. Each time
+ * transportDec_ReadAccessUnit() returns TRANSPORTDEC_SYNC_ERROR
+ * this function can be called to retrieve an estimate of the amount
+ * of missing access units. This works only in case of constant
+ * average bit rate (has to be known) and if the parameter
+ * TPDEC_PARAM_SET_BITRATE has been set accordingly.
+ * \param hTp Transport Handle.
+ * \param pNAccessUnits pointer to a memory location where the estimated lost
+ * frame count will be stored into.
+ * \return Error code.
+ */
+TRANSPORTDEC_ERROR transportDec_GetMissingAccessUnitCount(
+ INT *pNAccessUnits, HANDLE_TRANSPORTDEC hTp);
+
+/**
+ * \brief Set a given setting.
+ * \param hTp Transport Handle.
+ * \param param Identifier of the parameter to be changed.
+ * \param value Value for the parameter to be changed.
+ * \return Error code.
+ */
+TRANSPORTDEC_ERROR transportDec_SetParam(const HANDLE_TRANSPORTDEC hTp,
+ const TPDEC_PARAM param,
+ const INT value);
+
+/**
+ * \brief Get number of subframes (for LATM or ADTS)
+ * \param hTp Transport Handle.
+ * \return Number of ADTS/LATM subframes (return 1 for all other transport
+ * types).
+ */
+UINT transportDec_GetNrOfSubFrames(HANDLE_TRANSPORTDEC hTp);
+
+/**
+ * \brief Get info structure of transport decoder library.
+ * \param info A pointer to an allocated LIB_INFO struct.
+ * \return Error code.
+ */
+TRANSPORTDEC_ERROR transportDec_GetLibInfo(LIB_INFO *info);
+
+/* ADTS CRC support */
+
+/**
+ * \brief Set current bitstream position as start of a new data region.
+ * \param hTp Transport handle.
+ * \param mBits Size in bits of the data region. Set to 0 if it should not be
+ * of a fixed size.
+ * \return Data region ID, which should be used when calling
+ * transportDec_CrcEndReg().
+ */
+int transportDec_CrcStartReg(const HANDLE_TRANSPORTDEC hTp, const INT mBits);
+
+/**
+ * \brief Set end of data region.
+ * \param hTp Transport handle.
+ * \param reg Data region ID, opbtained from transportDec_CrcStartReg().
+ * \return void
+ */
+void transportDec_CrcEndReg(const HANDLE_TRANSPORTDEC hTp, const INT reg);
+
+/**
+ * \brief Calculate ADTS crc and check if it is correct. The ADTS checksum
+ * is held internally.
+ * \param hTp Transport handle.
+ * \return Return TRANSPORTDEC_OK if the CRC is ok, or error if CRC is not
+ * correct.
+ */
+TRANSPORTDEC_ERROR transportDec_CrcCheck(const HANDLE_TRANSPORTDEC hTp);
+
+/**
+ * \brief Only check whether a given config seems to be valid without modifying
+ * internal states.
+ *
+ * \param conf UCHAR buffer of the binary coded config (SDC type 9).
+ * \param length The length in bytes of the conf buffer.
+ *
+ * \return Error code.
+ */
+TRANSPORTDEC_ERROR transportDec_DrmRawSdcAudioConfig_Check(UCHAR *conf,
+ const UINT length);
+
+#endif /* #ifndef TPDEC_LIB_H */