| /* ------------------------------------------------------------------ |
| * Copyright (C) 2008 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 |
| |
| Date: 07/17/2003 |
| |
| ------------------------------------------------------------------------------ |
| REVISION HISTORY |
| |
| |
| 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 |
| |
| |