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author | Matthias P. Braendli <matthias.braendli@mpb.li> | 2020-03-31 10:03:58 +0200 |
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committer | Matthias P. Braendli <matthias.braendli@mpb.li> | 2020-03-31 10:03:58 +0200 |
commit | a1eb6cf861d3c1cbd4e6c016be3cbd2a1e3d797d (patch) | |
tree | 2b4790eec8f47fb086e645717f07c53b30ace919 /fdk-aac/libAACdec/src/aacdec_hcrs.h | |
parent | 2f84a54ec1d10b10293c7b1f4ab9fee31f3c6327 (diff) | |
parent | c6a73c219dbfdfe639372d9922f4eb512f06fa2f (diff) | |
download | ODR-AudioEnc-a1eb6cf861d3c1cbd4e6c016be3cbd2a1e3d797d.tar.gz ODR-AudioEnc-a1eb6cf861d3c1cbd4e6c016be3cbd2a1e3d797d.tar.bz2 ODR-AudioEnc-a1eb6cf861d3c1cbd4e6c016be3cbd2a1e3d797d.zip |
Merge GStreamer into next
Diffstat (limited to 'fdk-aac/libAACdec/src/aacdec_hcrs.h')
-rw-r--r-- | fdk-aac/libAACdec/src/aacdec_hcrs.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/fdk-aac/libAACdec/src/aacdec_hcrs.h b/fdk-aac/libAACdec/src/aacdec_hcrs.h new file mode 100644 index 0000000..acb2f40 --- /dev/null +++ b/fdk-aac/libAACdec/src/aacdec_hcrs.h @@ -0,0 +1,176 @@ +/* ----------------------------------------------------------------------------- +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): Robert Weidner (DSP Solutions) + + Description: HCR Decoder: Defines of state-constants, masks and + state-prototypes + +*******************************************************************************/ + +#ifndef AACDEC_HCRS_H +#define AACDEC_HCRS_H + +#include "FDK_bitstream.h" +#include "aacdec_hcr_types.h" +/* The four different kinds of types of states are: */ +/* different states are defined as constants */ /* start middle=self next + stop */ +#define STOP_THIS_STATE \ + 0 /* */ +#define BODY_ONLY \ + 1 /* X X X */ +#define BODY_SIGN__BODY \ + 2 /* X X X X [stop if no sign] */ +#define BODY_SIGN__SIGN \ + 3 /* X X [stop if sign bits decoded] */ +#define BODY_SIGN_ESC__BODY \ + 4 /* X X X X [stop if no sign] */ +#define BODY_SIGN_ESC__SIGN \ + 5 /* X X X [stop if no escape sequence] */ +#define BODY_SIGN_ESC__ESC_PREFIX \ + 6 /* X X */ +#define BODY_SIGN_ESC__ESC_WORD \ + 7 /* X X X [stop if abs(second qsc) != 16] */ + +/* examples: */ + +/* BODY_ONLY means only the codeword body will be decoded; no + * sign bits will follow and no escapesequence will follow */ + +/* BODY_SIGN__BODY means that the codeword consists of two parts; + * body and sign part. The part '__BODY' after the two underscores shows */ +/* that the bits which are currently decoded belong + * to the '__BODY' of the codeword and not to the sign part. */ + +/* BODY_SIGN_ESC__ESC_PB means that the codeword consists of three parts; + * body, sign and (here: two) escape sequences; */ +/* P = Prefix = ones */ +/* W = Escape Word */ +/* A = first possible (of two) Escape sequeces */ +/* B = second possible (of two) Escape sequeces */ +/* The part after the two underscores shows that + * the current bits which are decoded belong to the '__ESC_PB' - part of the */ +/* codeword. That means the body and the sign bits + * are decoded completely and the bits which are decoded now belong to */ +/* the escape sequence [P = prefix; B=second + * possible escape sequence] */ + +#define MSB_31_MASK 0x80000000 /* masks MSB (= Bit 31) in a 32 bit word */ +#define DIMENSION_OF_ESCAPE_CODEBOOK 2 /* for cb >= 11 is dimension 2 */ +#define ESCAPE_CODEBOOK 11 + +#define MASK_ESCAPE_PREFIX_UP 0x000F0000 +#define LSB_ESCAPE_PREFIX_UP 16 + +#define MASK_ESCAPE_PREFIX_DOWN 0x0000F000 +#define LSB_ESCAPE_PREFIX_DOWN 12 + +#define MASK_ESCAPE_WORD 0x00000FFF +#define MASK_FLAG_A 0x00200000 +#define MASK_FLAG_B 0x00100000 + +extern void DecodeNonPCWs(HANDLE_FDK_BITSTREAM bs, H_HCR_INFO hHcr); + +UINT Hcr_State_BODY_ONLY(HANDLE_FDK_BITSTREAM, void*); +UINT Hcr_State_BODY_SIGN__BODY(HANDLE_FDK_BITSTREAM, void*); +UINT Hcr_State_BODY_SIGN__SIGN(HANDLE_FDK_BITSTREAM, void*); +UINT Hcr_State_BODY_SIGN_ESC__BODY(HANDLE_FDK_BITSTREAM, void*); +UINT Hcr_State_BODY_SIGN_ESC__SIGN(HANDLE_FDK_BITSTREAM, void*); +UINT Hcr_State_BODY_SIGN_ESC__ESC_PREFIX(HANDLE_FDK_BITSTREAM, void*); +UINT Hcr_State_BODY_SIGN_ESC__ESC_WORD(HANDLE_FDK_BITSTREAM, void*); + +#endif /* AACDEC_HCRS_H */ |