diff options
Diffstat (limited to 'libMpegTPEnc/src/tpenc_adts.cpp')
| -rw-r--r-- | libMpegTPEnc/src/tpenc_adts.cpp | 246 |
1 files changed, 125 insertions, 121 deletions
diff --git a/libMpegTPEnc/src/tpenc_adts.cpp b/libMpegTPEnc/src/tpenc_adts.cpp index f4f3178..3f7e62c 100644 --- a/libMpegTPEnc/src/tpenc_adts.cpp +++ b/libMpegTPEnc/src/tpenc_adts.cpp @@ -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 @@ -79,48 +90,43 @@ Am Wolfsmantel 33 www.iis.fraunhofer.de/amm amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------------------------------------ */ +----------------------------------------------------------------------------- */ -/******************************** MPEG Audio Encoder ************************** +/******************* MPEG transport format encoder library ********************* - Initial author: Alex Groeschel - contents/description: ADTS Transport Headers support + Author(s): Alex Groeschel -******************************************************************************/ + Description: ADTS Transport Headers support -#include "tpenc_adts.h" +*******************************************************************************/ +#include "tpenc_adts.h" #include "tpenc_lib.h" #include "tpenc_asc.h" - int adtsWrite_CrcStartReg( - HANDLE_ADTS pAdts, /*!< pointer to adts stucture */ - HANDLE_FDK_BITSTREAM hBs, /*!< handle to current bit buffer structure */ - int mBits /*!< number of bits in crc region */ - ) -{ + HANDLE_ADTS pAdts, /*!< pointer to adts stucture */ + HANDLE_FDK_BITSTREAM hBs, /*!< handle to current bit buffer structure */ + int mBits /*!< number of bits in crc region */ +) { if (pAdts->protection_absent) { return 0; } - return ( FDKcrcStartReg(&pAdts->crcInfo, hBs, mBits) ); + return (FDKcrcStartReg(&pAdts->crcInfo, hBs, mBits)); } void adtsWrite_CrcEndReg( - HANDLE_ADTS pAdts, /*!< pointer to adts crc info stucture */ - HANDLE_FDK_BITSTREAM hBs, /*!< handle to current bit buffer structure */ - int reg /*!< crc region */ - ) -{ - if (pAdts->protection_absent == 0) - { + HANDLE_ADTS pAdts, /*!< pointer to adts crc info stucture */ + HANDLE_FDK_BITSTREAM hBs, /*!< handle to current bit buffer structure */ + int reg /*!< crc region */ +) { + if (pAdts->protection_absent == 0) { FDKcrcEndReg(&pAdts->crcInfo, hBs, reg); } } -int adtsWrite_GetHeaderBits( HANDLE_ADTS hAdts ) -{ +int adtsWrite_GetHeaderBits(HANDLE_ADTS hAdts) { int bits = 0; if (hAdts->currentBlock == 0) { @@ -129,14 +135,15 @@ int adtsWrite_GetHeaderBits( HANDLE_ADTS hAdts ) if (!hAdts->protection_absent) { /* Add header/ single raw data block CRC bits */ bits += 16; - if (hAdts->num_raw_blocks>0) { + if (hAdts->num_raw_blocks > 0) { /* Add bits of raw data block position markers */ - bits += (hAdts->num_raw_blocks)*16; + bits += (hAdts->num_raw_blocks) * 16; } } } - if (!hAdts->protection_absent && hAdts->num_raw_blocks>0) { - /* Add raw data block CRC bits. Not really part of the header, put they cause bit overhead to be accounted. */ + if (!hAdts->protection_absent && hAdts->num_raw_blocks > 0) { + /* Add raw data block CRC bits. Not really part of the header, put they + * cause bit overhead to be accounted. */ bits += 16; } @@ -145,13 +152,10 @@ int adtsWrite_GetHeaderBits( HANDLE_ADTS hAdts ) return bits; } -INT adtsWrite_Init(HANDLE_ADTS hAdts, CODER_CONFIG *config) -{ +INT adtsWrite_Init(HANDLE_ADTS hAdts, CODER_CONFIG *config) { /* Sanity checks */ - if ( config->nSubFrames < 1 - || config->nSubFrames > 4 - || (int)config->aot > 4 - || (int)config->aot < 1 ) { + if (config->nSubFrames < 1 || config->nSubFrames > 4 || + (int)config->aot > 4 || (int)config->aot < 1) { return -1; } @@ -161,41 +165,38 @@ INT adtsWrite_Init(HANDLE_ADTS hAdts, CODER_CONFIG *config) } else { hAdts->mpeg_id = 1; /* MPEG 2 */ } - hAdts->layer=0; - hAdts->protection_absent = ! (config->flags & CC_PROTECTION); + hAdts->layer = 0; + hAdts->protection_absent = !(config->flags & CC_PROTECTION); hAdts->profile = ((int)config->aot) - 1; - hAdts->sample_freq_index = getSamplingRateIndex(config->samplingRate); + hAdts->sample_freq_index = getSamplingRateIndex(config->samplingRate, 4); hAdts->sample_freq = config->samplingRate; - hAdts->private_bit=0; + hAdts->private_bit = 0; hAdts->channel_mode = config->channelMode; - hAdts->original=0; - hAdts->home=0; + hAdts->original = 0; + hAdts->home = 0; /* variable header */ - hAdts->copyright_id=0; - hAdts->copyright_start=0; + hAdts->copyright_id = 0; + hAdts->copyright_start = 0; - hAdts->num_raw_blocks=config->nSubFrames-1; /* 0 means 1 raw data block */ + hAdts->num_raw_blocks = config->nSubFrames - 1; /* 0 means 1 raw data block */ + + hAdts->channel_config_zero = config->channelConfigZero; FDKcrcInit(&hAdts->crcInfo, 0x8005, 0xFFFF, 16); hAdts->currentBlock = 0; - return 0; } -int adtsWrite_EncodeHeader(HANDLE_ADTS hAdts, - HANDLE_FDK_BITSTREAM hBitStream, - int buffer_fullness, - int frame_length) -{ +int adtsWrite_EncodeHeader(HANDLE_ADTS hAdts, HANDLE_FDK_BITSTREAM hBitStream, + int buffer_fullness, int frame_length) { INT crcIndex = 0; - hAdts->headerBits = adtsWrite_GetHeaderBits(hAdts); - FDK_ASSERT(((frame_length+hAdts->headerBits)/8)<0x2000); /*13 bit*/ - FDK_ASSERT(buffer_fullness<0x800); /* 11 bit */ + FDK_ASSERT(((frame_length + hAdts->headerBits) / 8) < 0x2000); /*13 bit*/ + FDK_ASSERT(buffer_fullness < 0x800); /* 11 bit */ if (!hAdts->protection_absent) { FDKcrcReset(&hAdts->crcInfo); @@ -208,8 +209,7 @@ int adtsWrite_EncodeHeader(HANDLE_ADTS hAdts, hAdts->subFrameStartBit = FDKgetValidBits(hBitStream); /* Skip new header if this is raw data block 1..n */ - if (hAdts->currentBlock == 0) - { + if (hAdts->currentBlock == 0) { FDKresetBitbuffer(hBitStream, BS_WRITER); if (hAdts->num_raw_blocks == 0) { @@ -224,24 +224,27 @@ int adtsWrite_EncodeHeader(HANDLE_ADTS hAdts, FDKwriteBits(hBitStream, hAdts->profile, 2); FDKwriteBits(hBitStream, hAdts->sample_freq_index, 4); FDKwriteBits(hBitStream, hAdts->private_bit, 1); - FDKwriteBits(hBitStream, getChannelConfig(hAdts->channel_mode), 3); + FDKwriteBits( + hBitStream, + getChannelConfig(hAdts->channel_mode, hAdts->channel_config_zero), 3); FDKwriteBits(hBitStream, hAdts->original, 1); FDKwriteBits(hBitStream, hAdts->home, 1); /* variable header */ FDKwriteBits(hBitStream, hAdts->copyright_id, 1); FDKwriteBits(hBitStream, hAdts->copyright_start, 1); - FDKwriteBits(hBitStream, (frame_length + hAdts->headerBits)>>3, 13); + FDKwriteBits(hBitStream, (frame_length + hAdts->headerBits) >> 3, 13); FDKwriteBits(hBitStream, buffer_fullness, 11); FDKwriteBits(hBitStream, hAdts->num_raw_blocks, 2); if (!hAdts->protection_absent) { int i; - /* End header CRC portion for single raw data block and write dummy zero values for unknown fields. */ + /* End header CRC portion for single raw data block and write dummy zero + * values for unknown fields. */ if (hAdts->num_raw_blocks == 0) { adtsWrite_CrcEndReg(hAdts, hBitStream, crcIndex); } else { - for (i=0; i<hAdts->num_raw_blocks; i++) { + for (i = 0; i < hAdts->num_raw_blocks; i++) { FDKwriteBits(hBitStream, 0, 16); } } @@ -252,14 +255,13 @@ int adtsWrite_EncodeHeader(HANDLE_ADTS hAdts, return 0; } -void adtsWrite_EndRawDataBlock(HANDLE_ADTS hAdts, - HANDLE_FDK_BITSTREAM hBs, - int *pBits) -{ +void adtsWrite_EndRawDataBlock(HANDLE_ADTS hAdts, HANDLE_FDK_BITSTREAM hBs, + int *pBits) { if (!hAdts->protection_absent) { FDK_BITSTREAM bsWriter; - FDKinitBitStream(&bsWriter, hBs->hBitBuf.Buffer, hBs->hBitBuf.bufSize, 0, BS_WRITER); + FDKinitBitStream(&bsWriter, hBs->hBitBuf.Buffer, hBs->hBitBuf.bufSize, 0, + BS_WRITER); FDKpushFor(&bsWriter, 56); if (hAdts->num_raw_blocks == 0) { @@ -272,32 +274,35 @@ void adtsWrite_EndRawDataBlock(HANDLE_ADTS hAdts, /* Write distance to current data block */ if (hAdts->currentBlock < hAdts->num_raw_blocks) { - FDKpushFor(&bsWriter, hAdts->currentBlock*16); - distance = FDKgetValidBits(hBs) - (56 + (hAdts->num_raw_blocks)*16 + 16); - FDKwriteBits(&bsWriter, distance>>3, 16); + FDKpushFor(&bsWriter, hAdts->currentBlock * 16); + distance = + FDKgetValidBits(hBs) - (56 + (hAdts->num_raw_blocks) * 16 + 16); + FDKwriteBits(&bsWriter, distance >> 3, 16); } } FDKsyncCache(&bsWriter); } /* Write total frame lenth for multiple raw data blocks and header CRC */ - if (hAdts->num_raw_blocks > 0 && hAdts->currentBlock == hAdts->num_raw_blocks) { + if (hAdts->num_raw_blocks > 0 && + hAdts->currentBlock == hAdts->num_raw_blocks) { FDK_BITSTREAM bsWriter; int crcIndex = 0; - FDKinitBitStream(&bsWriter, hBs->hBitBuf.Buffer, hBs->hBitBuf.bufSize, 0, BS_WRITER); + FDKinitBitStream(&bsWriter, hBs->hBitBuf.Buffer, hBs->hBitBuf.bufSize, 0, + BS_WRITER); if (!hAdts->protection_absent) { FDKcrcReset(&hAdts->crcInfo); crcIndex = FDKcrcStartReg(&hAdts->crcInfo, &bsWriter, 0); } /* Write total frame length */ - FDKpushFor(&bsWriter, 56-28+2); - FDKwriteBits(&bsWriter, FDKgetValidBits(hBs)>>3, 13); + FDKpushFor(&bsWriter, 56 - 28 + 2); + FDKwriteBits(&bsWriter, FDKgetValidBits(hBs) >> 3, 13); /* Write header CRC */ if (!hAdts->protection_absent) { - FDKpushFor(&bsWriter, 11+2 + (hAdts->num_raw_blocks)*16); + FDKpushFor(&bsWriter, 11 + 2 + (hAdts->num_raw_blocks) * 16); FDKcrcEndReg(&hAdts->crcInfo, &bsWriter, crcIndex); FDKwriteBits(&bsWriter, FDKcrcGetCRC(&hAdts->crcInfo), 16); } @@ -312,4 +317,3 @@ void adtsWrite_EndRawDataBlock(HANDLE_ADTS hAdts, } hAdts->currentBlock++; } - |