| /* ------------------------------------------------------------------ |
| * 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_open.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_open.h" |
| #include "s_sbr_header_data.h" |
| #include "init_sbr_dec.h" |
| #include "e_sbr_error.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 |
| ----------------------------------------------------------------------------*/ |
| const SBR_HEADER_DATA defaultHeader = |
| { |
| HEADER_NOT_INITIALIZED, /* status */ |
| MASTER_RESET, /* masterStatus */ |
| 0, /* crcEnable */ |
| UP_BY_2, /* sampleRateMode */ |
| SBR_AMP_RES_3_0, /* ampResolution */ |
| 5, /* startFreq */ |
| 0, /* stopFreq */ |
| 0, /* xover_band */ |
| SBR_FREQ_SCALE_DEFAULT, /* freqScale */ |
| SBR_ALTER_SCALE_DEFAULT, /* alterScale */ |
| SBR_NOISE_BANDS_DEFAULT, /* noise_bands */ |
| 0, /* noNoiseBands */ |
| SBR_LIMITER_BANDS_DEFAULT, |
| SBR_LIMITER_GAINS_DEFAULT, |
| SBR_INTERPOL_FREQ_DEFAULT, |
| SBR_SMOOTHING_LENGTH_DEFAULT |
| }; |
| |
| /*---------------------------------------------------------------------------- |
| ; 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_open(Int32 sampleRate, |
| SBR_DEC *sbrDec, |
| SBRDECODER_DATA * self, |
| bool bDownSampledSbr) |
| |
| { |
| Int16 i ; |
| |
| SBR_CHANNEL *SbrChannel; |
| |
| |
| SbrChannel = self->SbrChannel; |
| |
| for (i = 0; i < MAX_NUM_CHANNELS; i++) |
| { |
| pv_memset((void *)&(SbrChannel[i]), |
| 0, |
| sizeof(SBR_CHANNEL)); |
| |
| /* init a default header such that we can at least do upsampling later */ |
| |
| pv_memcpy(&(SbrChannel[i].frameData.sbr_header), |
| &defaultHeader, |
| sizeof(SBR_HEADER_DATA)); |
| |
| /* should be handled by sample rate mode bit */ |
| if (sampleRate > 24000 || bDownSampledSbr) |
| { |
| SbrChannel[i].frameData.sbr_header.sampleRateMode = SINGLE_RATE; |
| } |
| |
| |
| SbrChannel[i].outFrameSize = |
| init_sbr_dec(sampleRate, |
| self->SbrChannel[0].frameData.sbr_header.sampleRateMode, |
| sbrDec, |
| &(SbrChannel[i].frameData)); |
| |
| SbrChannel[i].syncState = UPSAMPLING; |
| |
| SbrChannel[i].frameData.sUp = 1; /* reset mode */ |
| } |
| } |
| |
| #endif |
| |