| /* ------------------------------------------------------------------ |
| * 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: ps_hybrid_filter_bank_allocation.c |
| |
| ------------------------------------------------------------------------------ |
| REVISION HISTORY |
| |
| |
| Who: Date: MM/DD/YYYY |
| Description: |
| |
| ------------------------------------------------------------------------------ |
| INPUT AND OUTPUT DEFINITIONS |
| |
| |
| |
| ------------------------------------------------------------------------------ |
| FUNCTION DESCRIPTION |
| |
| Does Hybrid filter bank memory allocation |
| |
| ------------------------------------------------------------------------------ |
| 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 2003. |
| |
| ------------------------------------------------------------------------------ |
| PSEUDO-CODE |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| |
| /*---------------------------------------------------------------------------- |
| ; INCLUDES |
| ----------------------------------------------------------------------------*/ |
| |
| #ifdef AAC_PLUS |
| |
| #ifdef PARAMETRICSTEREO |
| #include "aac_mem_funcs.h" |
| #include "ps_hybrid_filter_bank_allocation.h" |
| #include "ps_all_pass_filter_coeff.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 |
| ----------------------------------------------------------------------------*/ |
| |
| Int32 ps_hybrid_filter_bank_allocation(HYBRID **phHybrid, |
| Int32 noBands, |
| const Int32 *pResolution, |
| Int32 **pPtr) |
| { |
| Int32 i; |
| Int32 tmp; |
| Int32 maxNoChannels = 0; |
| HYBRID *hs; |
| Int32 *ptr = *pPtr; |
| |
| |
| *phHybrid = (HYBRID *)NULL; |
| |
| hs = (HYBRID *)ptr; |
| |
| ptr += sizeof(HYBRID) / sizeof(*ptr); |
| |
| hs->pResolution = (Int32*)ptr; |
| |
| ptr += noBands * sizeof(Int32) / sizeof(*ptr); |
| |
| for (i = 0; i < noBands; i++) |
| { |
| |
| hs->pResolution[i] = pResolution[i]; |
| |
| if (pResolution[i] != HYBRID_8_CPLX && |
| pResolution[i] != HYBRID_2_REAL && |
| pResolution[i] != HYBRID_4_CPLX) |
| { |
| return 1; |
| } |
| |
| if (pResolution[i] > maxNoChannels) |
| { |
| maxNoChannels = pResolution[i]; |
| } |
| } |
| |
| hs->nQmfBands = noBands; |
| hs->qmfBufferMove = HYBRID_FILTER_LENGTH - 1; |
| |
| hs->mQmfBufferReal = (Int32 **)ptr; |
| ptr += noBands * sizeof(ptr) / sizeof(*ptr); |
| |
| hs->mQmfBufferImag = (Int32 **)ptr; |
| ptr += noBands * sizeof(ptr) / sizeof(*ptr); |
| |
| tmp = hs->qmfBufferMove; /* HYBRID_FILTER_LENGTH == 13 */ |
| |
| for (i = 0; i < noBands; i++) |
| { |
| hs->mQmfBufferReal[i] = ptr; |
| ptr += tmp; |
| |
| hs->mQmfBufferImag[i] = ptr; |
| ptr += tmp; |
| |
| } |
| |
| hs->mTempReal = ptr; |
| ptr += maxNoChannels; |
| |
| |
| hs->mTempImag = ptr; |
| ptr += maxNoChannels; |
| |
| |
| *phHybrid = hs; |
| *pPtr = ptr; |
| |
| return 0; |
| } |
| |
| |
| #endif |
| |
| |
| #endif |
| |