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Diffstat (limited to 'fdk-aac/libMpegTPDec/src/tpdec_drm.h')
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diff --git a/fdk-aac/libMpegTPDec/src/tpdec_drm.h b/fdk-aac/libMpegTPDec/src/tpdec_drm.h new file mode 100644 index 0000000..09822dc --- /dev/null +++ b/fdk-aac/libMpegTPDec/src/tpdec_drm.h @@ -0,0 +1,202 @@ +/* ----------------------------------------------------------------------------- +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): Josef Hoepfl + + Description: DRM interface + +*******************************************************************************/ + +#ifndef TPDEC_DRM_H +#define TPDEC_DRM_H + +#include "tpdec_lib.h" + +#include "FDK_crc.h" + +typedef struct { + FDK_CRCINFO crcInfo; /* CRC state info */ + USHORT crcReadValue; /* CRC value read from bitstream data */ + +} STRUCT_DRM; + +typedef STRUCT_DRM *HANDLE_DRM; + +/*! + \brief Initialize DRM CRC + + The function initialzes the crc buffer and the crc lookup table. + + \return none +*/ +void drmRead_CrcInit(HANDLE_DRM pDrm); + +/** + * \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. + * + * \param pDrm DRM data handle + * \param hBs bitstream handle, on which the CRC region referes to + * \param mBits max number of bits in crc region to be considered + * + * \return ID for the created region, -1 in case of an error + */ +int drmRead_CrcStartReg(HANDLE_DRM pDrm, HANDLE_FDK_BITSTREAM hBs, int mBits); + +/** + * \brief Ends CRC region identified by reg + * + * \param pDrm DRM data handle + * \param hBs bitstream handle, on which the CRC region referes to + * \param reg CRC regions ID returned by drmRead_CrcStartReg() + * + * \return none + */ +void drmRead_CrcEndReg(HANDLE_DRM pDrm, 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. + * + * \param pDrm DRM data handle + * + * \return Returns 0 if they are identical otherwise 1 + */ +TRANSPORTDEC_ERROR drmRead_CrcCheck(HANDLE_DRM pDrm); + +/** + * \brief Check if we have a valid DRM 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. + * + * \param pDrm DRM data handle which is filled with parsed DRM header data + * \param bs handle of bitstream from whom the DRM header is read + * + * \return error status + */ +TRANSPORTDEC_ERROR drmRead_DecodeHeader(HANDLE_DRM pDrm, + HANDLE_FDK_BITSTREAM bs); + +/** + * \brief Parse a Drm specific SDC audio config from a given bitstream handle. + * + * \param pAsc A pointer to an allocated + * CSAudioSpecificConfig struct. + * \param hBs Bitstream handle. + * \param cb A pointer to structure holding callback + * information Note: A NULL pointer for cb can be used to signal a "Check Config + * only functionality" + * \param configMode Config modes: memory allocation mode or + * config change detection mode + * \param configChanged Indicates a config change + * + * \return Total element count including all SCE, CPE and LFE. + */ +TRANSPORTDEC_ERROR DrmRawSdcAudioConfig_Parse(CSAudioSpecificConfig *pAsc, + HANDLE_FDK_BITSTREAM hBs, + CSTpCallBacks *cb, + const UCHAR configMode, + const UCHAR configChanged); + +#endif /* TPDEC_DRM_H */ |