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Diffstat (limited to 'media/libstagefright/codecs/aacdec/sbr_get_cpe.cpp')
| -rw-r--r-- | media/libstagefright/codecs/aacdec/sbr_get_cpe.cpp | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/aacdec/sbr_get_cpe.cpp b/media/libstagefright/codecs/aacdec/sbr_get_cpe.cpp new file mode 100644 index 0000000..657d032 --- /dev/null +++ b/media/libstagefright/codecs/aacdec/sbr_get_cpe.cpp @@ -0,0 +1,266 @@ +/* ------------------------------------------------------------------ + * 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_get_cpe.c + +------------------------------------------------------------------------------ + REVISION HISTORY + + + Who: Date: MM/DD/YYYY + Description: + +------------------------------------------------------------------------------ + INPUT AND OUTPUT DEFINITIONS + + Arguments: hFrameDataLeft - handle to struct SBR_FRAME_DATA for first channel + hFrameDataRight - handle to struct SBR_FRAME_DATA for first channel + hBitBuf - handle to struct BIT_BUF + + Return: SbrFrameOK + + +------------------------------------------------------------------------------ + 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_get_cpe.h" +#include "buf_getbits.h" +#include "extractframeinfo.h" +#include "sbr_get_dir_control_data.h" +#include "sbr_get_envelope.h" +#include "sbr_get_noise_floor_data.h" +#include "sbr_get_additional_data.h" +#include "sbr_extract_extended_data.h" +#include "aac_mem_funcs.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 +----------------------------------------------------------------------------*/ + +/*---------------------------------------------------------------------------- +; 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 +----------------------------------------------------------------------------*/ + + +SBR_ERROR sbr_get_cpe(SBR_FRAME_DATA * hFrameDataLeft, + SBR_FRAME_DATA * hFrameDataRight, + BIT_BUFFER * hBitBuf) +{ + Int32 i; + Int32 bits; + SBR_ERROR err = SBRDEC_OK; + + /* reserved bits */ + bits = buf_getbits(hBitBuf, SI_SBR_RESERVED_PRESENT); + + if (bits) + { + buf_getbits(hBitBuf, SI_SBR_RESERVED_BITS_DATA); + buf_getbits(hBitBuf, SI_SBR_RESERVED_BITS_DATA); + } + + /* Read coupling flag */ + bits = buf_getbits(hBitBuf, SI_SBR_COUPLING_BITS); + + if (bits) + { + hFrameDataLeft->coupling = COUPLING_LEVEL; + hFrameDataRight->coupling = COUPLING_BAL; + } + else + { + hFrameDataLeft->coupling = COUPLING_OFF; + hFrameDataRight->coupling = COUPLING_OFF; + } + + + err = extractFrameInfo(hBitBuf, hFrameDataLeft); + + if (err != SBRDEC_OK) + { + return err; + } + + if (hFrameDataLeft->coupling) + { + + pv_memcpy(hFrameDataRight->frameInfo, + hFrameDataLeft->frameInfo, + LENGTH_FRAME_INFO * sizeof(Int32)); + + hFrameDataRight->nNoiseFloorEnvelopes = hFrameDataLeft->nNoiseFloorEnvelopes; + hFrameDataRight->frameClass = hFrameDataLeft->frameClass; + + + sbr_get_dir_control_data(hFrameDataLeft, hBitBuf); + sbr_get_dir_control_data(hFrameDataRight, hBitBuf); + + for (i = 0; i < hFrameDataLeft->nNfb; i++) + { + hFrameDataLeft->sbr_invf_mode_prev[i] = hFrameDataLeft->sbr_invf_mode[i]; + hFrameDataRight->sbr_invf_mode_prev[i] = hFrameDataRight->sbr_invf_mode[i]; + + hFrameDataLeft->sbr_invf_mode[i] = (INVF_MODE) buf_getbits(hBitBuf, SI_SBR_INVF_MODE_BITS); + hFrameDataRight->sbr_invf_mode[i] = hFrameDataLeft->sbr_invf_mode[i]; + } + + sbr_get_envelope(hFrameDataLeft, hBitBuf); + sbr_get_noise_floor_data(hFrameDataLeft, hBitBuf); + sbr_get_envelope(hFrameDataRight, hBitBuf); + + } + else + { + err = extractFrameInfo(hBitBuf, hFrameDataRight); + + if (err != SBRDEC_OK) + { + return err; + } + + + sbr_get_dir_control_data(hFrameDataLeft, hBitBuf); + sbr_get_dir_control_data(hFrameDataRight, hBitBuf); + + for (i = 0; i < hFrameDataLeft->nNfb; i++) + { + hFrameDataLeft->sbr_invf_mode_prev[i] = hFrameDataLeft->sbr_invf_mode[i]; + hFrameDataLeft->sbr_invf_mode[i] = + (INVF_MODE) buf_getbits(hBitBuf, SI_SBR_INVF_MODE_BITS); + } + + for (i = 0; i < hFrameDataRight->nNfb; i++) + { + hFrameDataRight->sbr_invf_mode_prev[i] = hFrameDataRight->sbr_invf_mode[i]; + + hFrameDataRight->sbr_invf_mode[i] = + (INVF_MODE) buf_getbits(hBitBuf, SI_SBR_INVF_MODE_BITS); + } + sbr_get_envelope(hFrameDataLeft, hBitBuf); + sbr_get_envelope(hFrameDataRight, hBitBuf); + + sbr_get_noise_floor_data(hFrameDataLeft, hBitBuf); + + } + + sbr_get_noise_floor_data(hFrameDataRight, hBitBuf); + + pv_memset((void *)hFrameDataLeft->addHarmonics, + 0, + hFrameDataLeft->nSfb[HI]*sizeof(Int32)); + + pv_memset((void *)hFrameDataRight->addHarmonics, + 0, + hFrameDataRight->nSfb[HI]*sizeof(Int32)); + + sbr_get_additional_data(hFrameDataLeft, hBitBuf); + sbr_get_additional_data(hFrameDataRight, hBitBuf); + + sbr_extract_extended_data(hBitBuf +#ifdef PARAMETRICSTEREO + , NULL +#endif + ); + + return SBRDEC_OK; + +} + +#endif + + |