From 203e3f28fbebec7011342017fafc2a0bda0ce530 Mon Sep 17 00:00:00 2001 From: Jean-Michel Trivi Date: Fri, 8 Apr 2016 12:05:12 -0700 Subject: AAC/SBR decoder improvements and bugfixes * AAC-Decoder - Add support for AOT 20 (ER-AAC scalable) (base layer only) - Add support for AAC as used in Digital Radio Mondiale (DRM30/DRM+) Modified file(s): libAACdec/src/aacdecoder.cpp libAACdec/src/aacdecoder_lib.cpp libFDK/src/FDK_core.cpp libFDK/src/FDK_tools_rom.cpp libMpegTPDec/src/tpdec_asc.cpp libMpegTPDec/src/tpdec_lib.cpp libMpegTPDec/src/version libSBRdec/include/sbrdecoder.h libSBRdec/src/env_extr.h libSBRdec/src/sbrdecoder.cpp Added file(s): libMpegTPDec/src/tpdec_drm.cpp libMpegTPDec/src/tpdec_drm.h - Fix sanity check in HCR module that was performed at the wrong point in time. Modified file(s): libAACdec/src/aacdecoder_lib.cpp libAACdec/src/block.cpp - Extend core sampling rate support up to 96 kHz. Modified file(s): libAACdec/src/aac_rom.cpp libAACdec/src/aacdecoder.cpp libAACdec/src/aacdecoder_lib.cpp - Return correct audio output channel description according number of output channels. Modified file(s): libAACdec/src/aacdecoder_lib.cpp - Indroduce decoder intern output buffer. This change allows to use framework output buffer with the actual size of the deocder output channels. Modified file(s): libAACdec/include/aacdecoder_lib.h libAACdec/src/aacdecoder.h libAACdec/src/aacdecoder_lib.cpp * SBR-Decoder - Increase robustness for erroneous input data. - Improve error concealment performance. - Fix handling of lowest sub-band for LD-SBR Modified file(s): libAACdec/src/aacdecoder.cpp libAACdec/src/aacdecoder_lib.cpp libSBRdec/src/env_calc.cpp libSBRdec/src/env_dec.cpp libSBRdec/src/env_extr.cpp libSBRdec/src/env_extr.h libSBRdec/src/sbr_dec.cpp libSBRdec/src/sbr_rom.cpp libSBRdec/src/sbr_rom.h libSBRdec/src/sbrdecoder.cpp - Add QMF delay compensation for ELD v2 streams decoded with the complex low delay filter-bank. Modified file(s): libSBRdec/src/sbr_dec.cpp libSBRdec/src/sbr_dec.h libSBRdec/src/sbrdecoder.cpp - Introduce a different handling of frames to be flushed dependent on whether there are delayed frames available or not. Modified file(s): libSBRdec/src/sbr_ram.h libSBRdec/src/sbrdecoder.cpp - Calculate the correct number of samples for dual-mono copy in case of no available PS data. Modified file(s): libSBRdec/src/sbrdecoder.cpp * SYS-Library - Change include order of genericStds.h to prevent conflict with definitions which are also used in math.h. Modified file(s): libSYS/src/genericStds.cpp Change-Id: I3ecffbad85f39b056213107955cfadbeb3f4b6e1 --- libMpegTPDec/src/tpdec_drm.cpp | 146 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100644 libMpegTPDec/src/tpdec_drm.cpp (limited to 'libMpegTPDec/src/tpdec_drm.cpp') diff --git a/libMpegTPDec/src/tpdec_drm.cpp b/libMpegTPDec/src/tpdec_drm.cpp new file mode 100644 index 0000000..df319e5 --- /dev/null +++ b/libMpegTPDec/src/tpdec_drm.cpp @@ -0,0 +1,146 @@ + +/* ----------------------------------------------------------------------------------------------------------- +Software License for The Fraunhofer FDK AAC Codec Library for Android + +© Copyright 1995 - 2015 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 AAC Decoder ************************** + + Author(s): Christian Griebel + Description: DRM transport stuff + +******************************************************************************/ + +#include "tpdec_drm.h" + + +#include "FDK_bitstream.h" + + + +void drmRead_CrcInit(HANDLE_DRM pDrm) /*!< pointer to drm crc info stucture */ +{ + FDK_ASSERT(pDrm != NULL); + + FDKcrcInit(&pDrm->crcInfo, 0x001d, 0xFFFF, 8); +} + +int drmRead_CrcStartReg( + HANDLE_DRM pDrm, /*!< pointer to drm stucture */ + HANDLE_FDK_BITSTREAM hBs, /*!< handle to current bit buffer structure */ + int mBits /*!< number of bits in crc region */ + ) +{ + FDK_ASSERT(pDrm != NULL); + + FDKcrcReset(&pDrm->crcInfo); + + pDrm->crcReadValue = FDKreadBits(hBs, 8); + + return ( FDKcrcStartReg(&pDrm->crcInfo, hBs, mBits) ); + +} + +void drmRead_CrcEndReg( + HANDLE_DRM pDrm, /*!< pointer to drm crc info stucture */ + HANDLE_FDK_BITSTREAM hBs, /*!< handle to current bit buffer structure */ + int reg /*!< crc region */ + ) +{ + FDK_ASSERT(pDrm != NULL); + + FDKcrcEndReg(&pDrm->crcInfo, hBs, reg); +} + +TRANSPORTDEC_ERROR drmRead_CrcCheck( HANDLE_DRM pDrm ) +{ + TRANSPORTDEC_ERROR ErrorStatus = TRANSPORTDEC_OK; + USHORT crc; + + crc = FDKcrcGetCRC(&pDrm->crcInfo) ^ 0xFF; + if (crc != pDrm->crcReadValue) + { + return (TRANSPORTDEC_CRC_ERROR); + } + + return (ErrorStatus); +} + + -- cgit v1.2.3