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Diffstat (limited to 'media/libstagefright/codecs/aacdec/sbr_extract_extended_data.cpp')
| -rw-r--r-- | media/libstagefright/codecs/aacdec/sbr_extract_extended_data.cpp | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/media/libstagefright/codecs/aacdec/sbr_extract_extended_data.cpp b/media/libstagefright/codecs/aacdec/sbr_extract_extended_data.cpp deleted file mode 100644 index 92b22f7..0000000 --- a/media/libstagefright/codecs/aacdec/sbr_extract_extended_data.cpp +++ /dev/null @@ -1,223 +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_extract_extended_data.c - ------------------------------------------------------------------------------- - REVISION HISTORY - - - Who: Date: MM/DD/YYYY - Description: - ------------------------------------------------------------------------------- - INPUT AND OUTPUT DEFINITIONS - - SBR_FRAME_DATA *hFrameData, Destination for extracted data of left channel - SBR_FRAME_DATA *hFrameDataRight Destination for extracted data of right channel - BIT_BUFFER hBitBuf pointer to bit buffer - - ------------------------------------------------------------------------------- - FUNCTION DESCRIPTION - - Reads extension data from the bitstream - - The bitstream format allows up to 4 kinds of extended data element. - Extended data may contain several elements, each identified by a 2-bit-ID. - ------------------------------------------------------------------------------- - 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_extract_extended_data.h" -#include "buf_getbits.h" - -#ifdef PARAMETRICSTEREO -#include "ps_read_data.h" -#endif - -/*---------------------------------------------------------------------------- -; 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 -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; 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 -----------------------------------------------------------------------------*/ - -void sbr_extract_extended_data(BIT_BUFFER * hBitBuf -#ifdef PARAMETRICSTEREO /* Parametric Stereo Decoder */ - , HANDLE_PS_DEC hParametricStereoDec -#endif - ) -{ - Int32 extended_data; - Int32 i; - Int32 nBitsLeft; - Int32 extension_id; - - extended_data = buf_get_1bit(hBitBuf); /* SI_SBR_EXTENDED_DATA_BITS */ - - if (extended_data) - { - Int32 cnt; - - cnt = buf_getbits(hBitBuf, SI_SBR_EXTENSION_SIZE_BITS); - if (cnt == (1 << SI_SBR_EXTENSION_SIZE_BITS) - 1) - { - cnt += buf_getbits(hBitBuf, SI_SBR_EXTENSION_ESC_COUNT_BITS); - } - - nBitsLeft = (cnt << 3); - while (nBitsLeft > 7) - { - extension_id = buf_getbits(hBitBuf, SI_SBR_EXTENSION_ID_BITS); - nBitsLeft -= SI_SBR_EXTENSION_ID_BITS; - - switch (extension_id) - { -#ifdef HQ_SBR -#ifdef PARAMETRICSTEREO - - /* - * Parametric Coding supports the Transient, Sinusoidal, Noise, and - * Parametric Stereo tools (MPEG4). - * 3GPP use aac+ hq along with ps for enhanced aac+ - * The PS tool uses complex-value QMF data, therefore can not be used - * with low power version of aac+ - */ - case EXTENSION_ID_PS_CODING: - - if (hParametricStereoDec != NULL) - { - if (!hParametricStereoDec->psDetected) - { - /* parametric stereo detected */ - hParametricStereoDec->psDetected = 1; - } - - nBitsLeft -= ps_read_data(hParametricStereoDec, - hBitBuf, - nBitsLeft); - - } - - break; -#endif -#endif - case 0: - - default: - /* An unknown extension id causes the remaining extension data - * to be skipped - */ - cnt = nBitsLeft >> 3; /* number of remaining bytes */ - - for (i = 0; i < cnt; i++) - { - buf_getbits(hBitBuf, 8); - } - - nBitsLeft -= (cnt << 3); - } - } - /* read fill bits for byte alignment */ - buf_getbits(hBitBuf, nBitsLeft); - } -} - - -#endif - - - |