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Diffstat (limited to 'media/libstagefright/codecs/aacdec/sbr_create_limiter_bands.cpp')
| -rw-r--r-- | media/libstagefright/codecs/aacdec/sbr_create_limiter_bands.cpp | 253 |
1 files changed, 0 insertions, 253 deletions
diff --git a/media/libstagefright/codecs/aacdec/sbr_create_limiter_bands.cpp b/media/libstagefright/codecs/aacdec/sbr_create_limiter_bands.cpp deleted file mode 100644 index 9472ffc..0000000 --- a/media/libstagefright/codecs/aacdec/sbr_create_limiter_bands.cpp +++ /dev/null @@ -1,253 +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_create_limiter_bands.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_create_limiter_bands.h" -#include "shellsort.h" -#include "s_patch.h" -#include "pv_log2.h" - -#include "fxp_mul32.h" - -#define R_SHIFT 29 -#define Q_fmt(x) (Int32)(x*((Int32)1<<R_SHIFT) + (x>=0?0.5F:-0.5F)) - - -/*---------------------------------------------------------------------------- -; 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_create_limiter_bands(Int32 limSbc[][13], - Int32 *gateMode, - Int *freqTable, - struct PATCH Patch, - const Int32 noBands) -{ - Int32 i; - Int32 j; - Int32 k; - Int isPatchBorder[2]; - Int32 patchBorders[MAX_NUM_PATCHES + 1]; - Int32 workLimiterBandTable[32 + MAX_NUM_PATCHES + 1]; - - Int32 nOctaves; - const Int32 limiterBandsPerOctave[4] = - {Q_fmt(0.0F), Q_fmt(1.2F), - Q_fmt(2.0F), Q_fmt(3.0F) - }; - - Int32 tmp_q1; - - Int32 noPatches = Patch.noOfPatches; - Int32 lowSubband = freqTable[0]; - Int32 highSubband = freqTable[noBands]; - - - for (i = 0; i < noPatches; i++) - { - patchBorders[i] = Patch.targetStartBand[i] - lowSubband; - } - patchBorders[i] = highSubband - lowSubband; - - /* First band: 1 limiter band. */ - limSbc[0][0] = freqTable[0] - lowSubband; - limSbc[0][1] = freqTable[noBands] - lowSubband; - gateMode[0] = 1; - - /* Next three bands: 1.2, 2, 3 limiter bands/octave plus bandborders at patchborders. */ - for (i = 1; i < 4; i++) - { - - for (k = 0; k <= noBands; k++) - { - workLimiterBandTable[k] = freqTable[k] - lowSubband; - } - - for (k = 1; k < noPatches; k++) - { - workLimiterBandTable[noBands+k] = patchBorders[k]; - } - - gateMode[i] = noBands + noPatches - 1; - shellsort(workLimiterBandTable, gateMode[i] + 1); - - for (j = 1; j <= gateMode[i]; j++) - { - tmp_q1 = ((workLimiterBandTable[j] + lowSubband) << 20) / (workLimiterBandTable[j-1] + lowSubband); - - nOctaves = pv_log2(tmp_q1); - - tmp_q1 = fxp_mul32_Q20(nOctaves, limiterBandsPerOctave[i]); - if (tmp_q1 < Q_fmt(0.49)) - { - if (workLimiterBandTable[j] == workLimiterBandTable[j-1]) - { - workLimiterBandTable[j] = highSubband; - shellsort(workLimiterBandTable, gateMode[i] + 1); - gateMode[i]--; - j--; - continue; - } - - isPatchBorder[0] = isPatchBorder[1] = 0; - - for (k = 0; k <= noPatches; k++) - { - if (workLimiterBandTable[j-1] == patchBorders[k]) - { - isPatchBorder[0] = 1; - break; - } - } - - for (k = 0; k <= noPatches; k++) - { - if (workLimiterBandTable[j] == patchBorders[k]) - { - isPatchBorder[1] = 1; - break; - } - } - - if (!isPatchBorder[1]) - { - workLimiterBandTable[j] = highSubband; - shellsort(workLimiterBandTable, gateMode[i] + 1); - gateMode[i]--; - j--; - } - else if (!isPatchBorder[0]) - { - workLimiterBandTable[j-1] = highSubband; - shellsort(workLimiterBandTable, gateMode[i] + 1); - gateMode[i]--; - j--; - } - } - } - for (k = 0; k <= gateMode[i]; k++) - { - limSbc[i][k] = workLimiterBandTable[k]; - } - } -} - - - -#endif - |