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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
+----------------------------------------------------------------------------------------------------------- */
+
+/************************** MPEG-4 Transport Encoder ************************
+
+ Author(s): Manuel Jander
+ Description: MPEG Transport encode
+
+******************************************************************************/
+
+#ifndef __TPENC_LIB_H__
+#define __TPENC_LIB_H__
+
+#include "tp_data.h"
+#include "FDK_bitstream.h"
+
+#define TRANSPORTENC_INBUF_SIZE 8192
+
+typedef enum {
+ TRANSPORTENC_OK = 0, /*!< All fine. */
+ TRANSPORTENC_NO_MEM, /*!< Out of memory. */
+ TRANSPORTENC_UNKOWN_ERROR = 1, /*!< Unknown error (embarrasing). */
+ TRANSPORTENC_INVALID_PARAMETER, /*!< An invalid parameter was passed to a function . */
+ TRANSPORTENC_PARSE_ERROR, /*!< Bitstream data contained inconsistencies (wrong syntax). */
+ TRANSPORTENC_UNSUPPORTED_FORMAT, /*!< Unsupported transport format. */
+ TRANSPORTENC_NOT_ENOUGH_BITS, /*!< Out of bits. Provide more bits and try again. */
+
+ TRANSPORTENC_INVALID_CONFIG, /*!< Error in configuration. */
+ TRANSPORTENC_LATM_INVALID_NR_OF_SUBFRAMES, /*!< LATM: number of subframes out of range. */
+ TRANSPORTENC_LOAS_NOT_AVAILABLE, /*!< LOAS format not supported. */
+ TRANSPORTENC_INVALID_LATM_ALIGNMENT, /*!< AudioMuxElement length not aligned to 1 byte. */
+
+ TRANSPORTENC_INVALID_TRANSMISSION_FRAME_LENGTH, /*!< Invalid transmission frame length (< 0). */
+ TRANSPORTENC_INVALID_CELP_FRAME_LENGTH, /*!< Invalid CELP frame length found (>= 62). */
+ TRANSPORTENC_INVALID_FRAME_BITS, /*!< Frame bits is not 40 and not 80. */
+ TRANSPORTENC_INVALID_AOT, /*!< Unknown AOT found. */
+ TRANSPORTENC_INVALID_AU_LENGTH /*!< Invalid Access Unit length (not byte-aligned). */
+
+} TRANSPORTENC_ERROR;
+
+typedef struct TRANSPORTENC *HANDLE_TRANSPORTENC;
+
+/**
+ * \brief Determine a reasonable channel configuration on the basis of channel_mode.
+ * \param noChannels Number of audio channels.
+ * \return CHANNEL_MODE value that matches the given amount of audio channels.
+ */
+CHANNEL_MODE transportEnc_GetChannelMode( int noChannels );
+
+/**
+ * \brief Register SBR heaqder writer callback.
+ * \param hTp Handle of transport decoder.
+ * \param cbUpdateConfig Pointer to a callback function to handle SBR header writing.
+ * \param user_data void pointer for user data passed to the callback as first parameter.
+ * \return 0 on success.
+ */
+int transportEnc_RegisterSbrCallback (
+ HANDLE_TRANSPORTENC hTpEnc,
+ const cbSbr_t cbSbr,
+ void* user_data
+ );
+
+/**
+ * \brief Register SSC writer callback.
+ * \param hTp Handle of transport decoder.
+ * \param cbUpdateConfig Pointer to a callback function to handle SSC writing.
+ * \param user_data void pointer for user data passed to the callback as first parameter.
+ * \return 0 on success.
+ */
+int transportEnc_RegisterSscCallback (
+ HANDLE_TRANSPORTENC hTpEnc,
+ const cbSsc_t cbSsc,
+ void* user_data
+ );
+
+/**
+ * \brief Write ASC from given parameters.
+ * \param asc A HANDLE_FDK_BITSTREAM where the ASC is written to.
+ * \param config Structure containing the codec configuration settings.
+ * \param cb callback information structure.
+ * \return 0 on success.
+ */
+int transportEnc_writeASC (
+ HANDLE_FDK_BITSTREAM asc,
+ CODER_CONFIG *config,
+ CSTpCallBacks *cb
+ );
+
+
+/* Defintion of flags that can be passed to transportEnc_Open() */
+#define TP_FLAG_MPEG4 1 /** MPEG4 (instead of MPEG2) */
+#define TP_FLAG_LATM_AMV 2 /** LATM AudioMuxVersion */
+#define TP_FLAG_LATM_AMVA 4 /** LATM AudioMuxVersionA */
+
+/**
+ * \brief Allocate transport encoder.
+ * \param phTpEnc Pointer to transport encoder handle.
+ * \return Error code.
+ */
+TRANSPORTENC_ERROR transportEnc_Open( HANDLE_TRANSPORTENC *phTpEnc );
+
+/**
+ * \brief Init transport encoder.
+ * \param bsBuffer Pointer to transport encoder.
+ * \param bsBuffer Pointer to bitstream buffer.
+ * \param bsBufferSize Size in bytes of bsBuffer.
+ * \param transportFmt Format of the transport to be written.
+ * \param config Pointer to a valid CODER_CONFIG struct.
+ * \param flags Transport encoder flags.
+ * \return Error code.
+ */
+TRANSPORTENC_ERROR transportEnc_Init(
+ HANDLE_TRANSPORTENC hTpEnc,
+ UCHAR *bsBuffer,
+ INT bsBufferSize,
+ TRANSPORT_TYPE transportFmt,
+ CODER_CONFIG *config,
+ UINT flags
+ );
+
+/**
+ * \brief Get transport encoder bitstream.
+ * \param hTp Pointer to a transport encoder handle.
+ * \return The handle to the requested FDK bitstream.
+ */
+HANDLE_FDK_BITSTREAM transportEnc_GetBitstream( HANDLE_TRANSPORTENC hTp );
+
+/**
+ * \brief Get amount of bits required by the transport headers.
+ * \param hTp Handle of transport encoder.
+ * \param auBits Amount of payload bits required for the current subframe.
+ * \return Error code.
+ */
+INT transportEnc_GetStaticBits( HANDLE_TRANSPORTENC hTp, int auBits );
+
+/**
+ * \brief Close transport encoder. This function assures that all allocated memory is freed.
+ * \param phTp Pointer to a previously allocated transport encoder handle.
+ */
+void transportEnc_Close( HANDLE_TRANSPORTENC *phTp );
+
+/**
+ * \brief Write one access unit.
+ * \param hTp Handle of transport encoder.
+ * \param total_bits Amount of total access unit bits.
+ * \param bufferFullness Value of current buffer fullness in bits.
+ * \param noConsideredChannels Number of bitrate wise considered channels (all minus LFE channels).
+ * \return Error code.
+ */
+TRANSPORTENC_ERROR transportEnc_WriteAccessUnit( HANDLE_TRANSPORTENC hTp,
+ INT total_bits,
+ int bufferFullness,
+ int noConsideredChannels );
+
+/**
+ * \brief Inform the transportEnc layer that writing of access unit has finished. This function
+ * is required to be called when the encoder has finished writing one Access
+ * one Access Unit for bitstream housekeeping.
+ * \param hTp Transport handle.
+ * \param pBits Pointer to an int, where the current amount of frame bits is passed
+ * and where the current amount of subframe bits is returned.
+ *
+ * OR: This integer is modified by the amount of extra bit alignment that may occurr.
+ *
+ * \return Error code.
+ */
+TRANSPORTENC_ERROR transportEnc_EndAccessUnit( HANDLE_TRANSPORTENC hTp, int *pBits);
+
+/*
+ * \brief Get a payload frame.
+ * \param hTpEnc Transport encoder handle.
+ * \param nBytes Pointer to an int to hold the frame size in bytes. Returns zero
+ * if currently there is no complete frame for output (number of sub frames > 1).
+ * \return Error code.
+ */
+TRANSPORTENC_ERROR transportEnc_GetFrame(HANDLE_TRANSPORTENC hTpEnc, int *nbytes);
+
+/* ADTS CRC support */
+
+/**
+ * \brief Set current bitstream position as start of a new data region.
+ * \param hTpEnc Transport encoder 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 transportEnc_CrcEndReg().
+ */
+int transportEnc_CrcStartReg(HANDLE_TRANSPORTENC hTpEnc, int mBits);
+
+/**
+ * \brief Set end of data region.
+ * \param hTpEnc Transport encoder handle.
+ * \param reg Data region ID, opbtained from transportEnc_CrcStartReg().
+ * \return void
+ */
+void transportEnc_CrcEndReg(HANDLE_TRANSPORTENC hTpEnc, int reg);
+
+/**
+ * \brief Get AudioSpecificConfig or StreamMuxConfig from transport encoder handle and write it to dataBuffer.
+ * \param hTpEnc Transport encoder handle.
+ * \param cc Pointer to the current and valid configuration contained in a CODER_CONFIG struct.
+ * \param dataBuffer Bitbuffer holding binary configuration.
+ * \param confType Pointer to an UINT where the configuration type is returned (0:ASC, 1:SMC).
+ * \return Error code.
+ */
+TRANSPORTENC_ERROR transportEnc_GetConf( HANDLE_TRANSPORTENC hTpEnc,
+ CODER_CONFIG *cc,
+ FDK_BITSTREAM *dataBuffer,
+ UINT *confType );
+
+/**
+ * \brief Get information (version among other things) of the transport encoder library.
+ * \param info Pointer to an allocated LIB_INFO struct.
+ * \return Error code.
+ */
+TRANSPORTENC_ERROR transportEnc_GetLibInfo( LIB_INFO *info );
+
+#endif /* #ifndef __TPENC_LIB_H__ */