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Diffstat (limited to 'libMpegTPDec/src/tpdec_adts.h')
| -rw-r--r-- | libMpegTPDec/src/tpdec_adts.h | 200 |
1 files changed, 99 insertions, 101 deletions
diff --git a/libMpegTPDec/src/tpdec_adts.h b/libMpegTPDec/src/tpdec_adts.h index a3b83a5..68f3f63 100644 --- a/libMpegTPDec/src/tpdec_adts.h +++ b/libMpegTPDec/src/tpdec_adts.h @@ -1,74 +1,85 @@ - -/* ----------------------------------------------------------------------------------------------------------- +/* ----------------------------------------------------------------------------- Software License for The Fraunhofer FDK AAC Codec Library for Android -© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. - All rights reserved. +© 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. +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: +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 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 +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. +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. +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." +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. +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. +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. +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 @@ -79,31 +90,31 @@ Am Wolfsmantel 33 www.iis.fraunhofer.de/amm amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------------------------------------ */ +----------------------------------------------------------------------------- */ -/***************************** MPEG-4 AAC Decoder ************************** +/******************* MPEG transport format decoder library ********************* Author(s): Josef Hoepfl + Description: ADTS interface -******************************************************************************/ +*******************************************************************************/ #ifndef TPDEC_ADTS_H #define TPDEC_ADTS_H #include "tpdec_lib.h" - -#define ADTS_SYNCWORD ( 0xfff ) -#define ADTS_SYNCLENGTH ( 12 ) /* in bits */ -#define ADTS_HEADERLENGTH ( 56 ) /* minimum header size in bits */ -#define ADTS_FIXED_HEADERLENGTH ( 28 ) /* in bits */ -#define ADTS_VARIABLE_HEADERLENGTH ( ADTS_HEADERLENGTH - ADTS_FIXED_HEADERLENGTH ) +#define ADTS_SYNCWORD (0xfff) +#define ADTS_SYNCLENGTH (12) /* in bits */ +#define ADTS_HEADERLENGTH (56) /* minimum header size in bits */ +#define ADTS_FIXED_HEADERLENGTH (28) /* in bits */ +#define ADTS_VARIABLE_HEADERLENGTH (ADTS_HEADERLENGTH - ADTS_FIXED_HEADERLENGTH) #ifdef CHECK_TWO_SYNCS - #define ADTS_MIN_TP_BUF_SIZE ( 8191 + 2 ) +#define ADTS_MIN_TP_BUF_SIZE (8191 + 2) #else - #define ADTS_MIN_TP_BUF_SIZE ( 8191 ) +#define ADTS_MIN_TP_BUF_SIZE (8191) #endif #include "FDK_crc.h" @@ -128,16 +139,16 @@ typedef struct { } STRUCT_ADTS_BS; struct STRUCT_ADTS { - STRUCT_ADTS_BS bs; UCHAR decoderCanDoMpeg4; UCHAR BufferFullnesStartFlag; - FDK_CRCINFO crcInfo; /* CRC state info */ - USHORT crcReadValue; /* CRC value read from bitstream data */ - USHORT rawDataBlockDist[4]; /* distance between each raw data block. Not the same as found in the bitstream */ -} ; + FDK_CRCINFO crcInfo; /* CRC state info */ + USHORT crcReadValue; /* CRC value read from bitstream data */ + USHORT rawDataBlockDist[4]; /* distance between each raw data block. Not the + same as found in the bitstream */ +}; typedef struct STRUCT_ADTS *HANDLE_ADTS; @@ -148,15 +159,14 @@ typedef struct STRUCT_ADTS *HANDLE_ADTS; \return none */ -void adtsRead_CrcInit( HANDLE_ADTS pAdts ); +void adtsRead_CrcInit(HANDLE_ADTS pAdts); /** * \brief Starts CRC region with a maximum number of bits - * If mBits is positive zero padding will be used for CRC calculation, if there - * are less than mBits bits available. - * If mBits is negative no zero padding is done. - * If mBits is zero the memory for the buffer is allocated dynamically, the - * number of bits is not limited. + * If mBits is positive zero padding will be used for CRC calculation, if + * there are less than mBits bits available. If mBits is negative no zero + * padding is done. If mBits is zero the memory for the buffer is + * allocated dynamically, the number of bits is not limited. * * \param pAdts ADTS data handle * \param hBs bitstream handle, on which the CRC region referes to @@ -164,11 +174,8 @@ void adtsRead_CrcInit( HANDLE_ADTS pAdts ); * * \return ID for the created region, -1 in case of an error */ -int adtsRead_CrcStartReg( - HANDLE_ADTS pAdts, - HANDLE_FDK_BITSTREAM hBs, - int mBits - ); +int adtsRead_CrcStartReg(HANDLE_ADTS pAdts, HANDLE_FDK_BITSTREAM hBs, + int mBits); /** * \brief Ends CRC region identified by reg @@ -179,58 +186,49 @@ int adtsRead_CrcStartReg( * * \return none */ -void adtsRead_CrcEndReg( - HANDLE_ADTS pAdts, - HANDLE_FDK_BITSTREAM hBs, - int reg - ); +void adtsRead_CrcEndReg(HANDLE_ADTS pAdts, HANDLE_FDK_BITSTREAM hBs, int reg); /** * \brief Check CRC * - * Checks if the currently calculated CRC matches the CRC field read from the bitstream - * Deletes all CRC regions. + * Checks if the currently calculated CRC matches the CRC field read from the + * bitstream Deletes all CRC regions. * * \param pAdts ADTS data handle * * \return Returns 0 if they are identical otherwise 1 */ -TRANSPORTDEC_ERROR adtsRead_CrcCheck( HANDLE_ADTS pAdts ); - +TRANSPORTDEC_ERROR adtsRead_CrcCheck(HANDLE_ADTS pAdts); /** * \brief Check if we have a valid ADTS frame at the current bitbuffer position * * This function assumes enough bits in buffer for the current frame. * It reads out the header bits to prepare the bitbuffer for the decode loop. - * In case the header bits show an invalid bitstream/frame, the whole frame is skipped. + * In case the header bits show an invalid bitstream/frame, the whole frame is + * skipped. * * \param pAdts ADTS data handle which is filled with parsed ADTS header data * \param bs handle of bitstream from whom the ADTS header is read * * \return error status */ -TRANSPORTDEC_ERROR adtsRead_DecodeHeader( - HANDLE_ADTS pAdts, - CSAudioSpecificConfig *pAsc, - HANDLE_FDK_BITSTREAM bs, - const INT ignoreBufferFullness - ); +TRANSPORTDEC_ERROR adtsRead_DecodeHeader(HANDLE_ADTS pAdts, + CSAudioSpecificConfig *pAsc, + HANDLE_FDK_BITSTREAM bs, + const INT ignoreBufferFullness); /** * \brief Get the raw data block length of the given block number. * * \param pAdts ADTS data handle * \param blockNum current raw data block index - * \param pLength pointer to an INT where the length of the given raw data block is stored into - * the returned value might be -1, in which case the raw data block length is unknown. + * \param pLength pointer to an INT where the length of the given raw data block + * is stored into the returned value might be -1, in which case the raw data + * block length is unknown. * * \return error status */ -int adtsRead_GetRawDataBlockLength( - HANDLE_ADTS pAdts, - INT blockNum - ); - +int adtsRead_GetRawDataBlockLength(HANDLE_ADTS pAdts, INT blockNum); #endif /* TPDEC_ADTS_H */ |