diff options
Diffstat (limited to 'media/libstagefright/codecs/aacdec/sbr_crc_check.cpp')
| -rw-r--r-- | media/libstagefright/codecs/aacdec/sbr_crc_check.cpp | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/media/libstagefright/codecs/aacdec/sbr_crc_check.cpp b/media/libstagefright/codecs/aacdec/sbr_crc_check.cpp deleted file mode 100644 index 3bb4398..0000000 --- a/media/libstagefright/codecs/aacdec/sbr_crc_check.cpp +++ /dev/null @@ -1,191 +0,0 @@ -/* ------------------------------------------------------------------ - * Copyright (C) 1998-2009 PacketVideo - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either - * express or implied. - * See the License for the specific language governing permissions - * and limitations under the License. - * ------------------------------------------------------------------- - */ -/* - - Filename: sbr_crc_check.c - ------------------------------------------------------------------------------- - REVISION HISTORY - - - Who: Date: MM/DD/YYYY - Description: - ------------------------------------------------------------------------------- - INPUT AND OUTPUT DEFINITIONS - - ------------------------------------------------------------------------------- - FUNCTION DESCRIPTION - - ------------------------------------------------------------------------------- - REQUIREMENTS - - ------------------------------------------------------------------------------- - REFERENCES - -SC 29 Software Copyright Licencing Disclaimer: - -This software module was originally developed by - Coding Technologies - -and edited by - - - -in the course of development of the ISO/IEC 13818-7 and ISO/IEC 14496-3 -standards for reference purposes and its performance may not have been -optimized. This software module is an implementation of one or more tools as -specified by the ISO/IEC 13818-7 and ISO/IEC 14496-3 standards. -ISO/IEC gives users free license to this software module or modifications -thereof for use in products claiming conformance to audiovisual and -image-coding related ITU Recommendations and/or ISO/IEC International -Standards. ISO/IEC gives users the same free license to this software module or -modifications thereof for research purposes and further ISO/IEC standardisation. -Those intending to use this software module in products are advised that its -use may infringe existing patents. ISO/IEC have no liability for use of this -software module or modifications thereof. Copyright is not released for -products that do not conform to audiovisual and image-coding related ITU -Recommendations and/or ISO/IEC International Standards. -The original developer retains full right to modify and use the code for its -own purpose, assign or donate the code to a third party and to inhibit third -parties from using the code for products that do not conform to audiovisual and -image-coding related ITU Recommendations and/or ISO/IEC International Standards. -This copyright notice must be included in all copies or derivative works. -Copyright (c) ISO/IEC 2002. - ------------------------------------------------------------------------------- - PSEUDO-CODE - ------------------------------------------------------------------------------- -*/ - - -/*---------------------------------------------------------------------------- -; INCLUDES -----------------------------------------------------------------------------*/ - -#ifdef AAC_PLUS - - -#include "sbr_crc_check.h" -#include "s_crc_buffer.h" -#include "buf_getbits.h" -#include "sbr_constants.h" -#include "check_crc.h" - - - - -/*---------------------------------------------------------------------------- -; MACROS -; Define module specific macros here -----------------------------------------------------------------------------*/ - - -/*---------------------------------------------------------------------------- -; DEFINES -; Include all pre-processor statements here. Include conditional -; compile variables also. -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; LOCAL FUNCTION DEFINITIONS -; Function Prototype declaration -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; LOCAL STORE/BUFFER/POINTER DEFINITIONS -; Variable declaration - defined here and used outside this module -----------------------------------------------------------------------------*/ - -const unsigned short MAXCRCSTEP = 16; - -/*---------------------------------------------------------------------------- -; EXTERNAL FUNCTION REFERENCES -; Declare functions defined elsewhere and referenced in this module -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES -; Declare variables used in this module but defined elsewhere -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; FUNCTION CODE -----------------------------------------------------------------------------*/ - -Int32 sbr_crc_check(BIT_BUFFER * hBitBuf, UInt32 NrBits) -{ - Int32 crcResult = 1; - BIT_BUFFER BitBufferCRC; - UInt32 NrCrcBits; - - UInt32 crcCheckSum; - - Int32 i; - CRC_BUFFER CrcBuf; - UInt32 bValue; - Int32 CrcStep; - Int32 CrcNrBitsRest; - - crcCheckSum = buf_getbits(hBitBuf, SI_SBR_CRC_BITS); - - - /* - * Copy Bit buffer State - */ - - BitBufferCRC.char_ptr = hBitBuf->char_ptr; - BitBufferCRC.buffer_word = hBitBuf->buffer_word; - BitBufferCRC.buffered_bits = hBitBuf->buffered_bits; - BitBufferCRC.nrBitsRead = hBitBuf->nrBitsRead; - BitBufferCRC.bufferLen = hBitBuf->bufferLen; - - - NrCrcBits = min(NrBits, BitBufferCRC.bufferLen - BitBufferCRC.nrBitsRead); - - - CrcStep = NrCrcBits / MAXCRCSTEP; - CrcNrBitsRest = (NrCrcBits - CrcStep * MAXCRCSTEP); - - CrcBuf.crcState = CRCSTART; - CrcBuf.crcMask = CRCMASK; - CrcBuf.crcPoly = CRCPOLY; - - for (i = 0; i < CrcStep; i++) - { - bValue = buf_getbits(&BitBufferCRC, MAXCRCSTEP); - check_crc(&CrcBuf, bValue, MAXCRCSTEP); - } - - bValue = buf_getbits(&BitBufferCRC, CrcNrBitsRest); - check_crc(&CrcBuf, bValue, CrcNrBitsRest); - - if ((UInt32)(CrcBuf.crcState & CRCRANGE) != crcCheckSum) - { - crcResult = 0; - } - - return (crcResult); -} - -#endif - - |