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Diffstat (limited to 'fdk-aac/libAACdec/src/channel.h')
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diff --git a/fdk-aac/libAACdec/src/channel.h b/fdk-aac/libAACdec/src/channel.h new file mode 100644 index 0000000..ed46666 --- /dev/null +++ b/fdk-aac/libAACdec/src/channel.h @@ -0,0 +1,160 @@ +/* ----------------------------------------------------------------------------- +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 +----------------------------------------------------------------------------- */ + +/**************************** AAC decoder library ****************************** + + Author(s): Josef Hoepfl + + Description: + +*******************************************************************************/ + +#ifndef CHANNEL_H +#define CHANNEL_H + +#include "common_fix.h" + +#include "FDK_tools_rom.h" +#include "channelinfo.h" +#include "tpdec_lib.h" + +/** + * \brief Init codeBook SFB indices (section data) with HCB_ESC. Useful for + * bitstreams which do not have any section data, but still SFB's (scale factor + * bands). This has the effect that upto the amount of transmitted SFB are + * treated as non-zero. + * \param pAacDecoderChannelInfo channel info structure containing a valid + * icsInfo struct. + */ +void CChannel_CodebookTableInit(CAacDecoderChannelInfo *pAacDecoderChannelInfo); + +/** + * \brief decode a channel element. To be called after CChannelElement_Read() + * \param pAacDecoderChannelInfo pointer to channel data struct. Depending on + * el_channels either one or two. + * \param pSamplingRateInfo pointer to sample rate information structure + * \param el_channels amount of channels of the element to be decoded. + * \param output pointer to time domain output buffer (ACELP) + */ +void CChannelElement_Decode( + CAacDecoderChannelInfo *pAacDecoderChannelInfo[2], + CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[2], + SamplingRateInfo *pSamplingRateInfo, UINT flags, UINT elFlags, + int el_channels); + +/** + * \brief Read channel element of given type from bitstream. + * \param hBs bitstream handle to access bitstream data. + * \param pAacDecoderChannelInfo pointer array to store channel information. + * \param aot Audio Object Type + * \param pSamplingRateInfo sampling rate info table. + * \param flags common parser guidance flags + * \param elFlags element specific parser guidance flags + * \param numberOfChannels amoun of channels contained in the object to be + * parsed. + * \param epConfig the current epConfig value obtained from the Audio Specific + * Config. + * \param pTp transport decoder handle required for ADTS CRC checking. + * ... + * \return an AAC_DECODER_ERROR error code. + */ +AAC_DECODER_ERROR CChannelElement_Read( + HANDLE_FDK_BITSTREAM hBs, CAacDecoderChannelInfo *pAacDecoderChannelInfo[], + CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[], + const AUDIO_OBJECT_TYPE aot, SamplingRateInfo *pSamplingRateInfo, + const UINT flags, const UINT elFlags, const UINT frame_length, + const UCHAR numberOfChannels, const SCHAR epConfig, + HANDLE_TRANSPORTDEC pTpDec); + +#endif /* #ifndef CHANNEL_H */ |