blob: b4771229df542ec6f0611de128d82464e038e068 [file] [log] [blame]
/* -----------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
© Copyright 1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten
Forschung e.V. All rights reserved.
The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software
that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding
scheme for digital audio. This FDK AAC Codec software is intended to be used on
a wide variety of Android devices.
AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient
general perceptual audio codecs. AAC-ELD is considered the best-performing
full-bandwidth communications codec by independent studies and is widely
deployed. AAC has been standardized by ISO and IEC as part of the MPEG
Patent licenses for necessary patent claims for the FDK AAC Codec (including
those of Fraunhofer) may be obtained through Via Licensing
( or through the respective patent owners individually for
the purpose of encoding or decoding bit streams in products that are compliant
with the ISO/IEC MPEG audio standards. Please note that most manufacturers of
Android devices already license these patent claims through Via Licensing or
directly from the patent owners, and therefore FDK AAC Codec software may
already be covered under those patent licenses when it is used for those
licensed purposes only.
Commercially-licensed AAC software libraries, including floating-point versions
with enhanced sound quality, are also available from Fraunhofer. Users are
encouraged to check the Fraunhofer website for additional applications
information and documentation.
Redistribution and use in source and binary forms, with or without modification,
are permitted without payment of copyright license fees provided that you
satisfy the following conditions:
You must retain the complete text of this software license in redistributions of
the FDK AAC Codec or your modifications thereto in source code form.
You must retain the complete text of this software license in the documentation
and/or other materials provided with redistributions of the FDK AAC Codec or
your modifications thereto in binary form. You must make available free of
charge copies of the complete source code of the FDK AAC Codec and your
modifications thereto to recipients of copies in binary form.
The name of Fraunhofer may not be used to endorse or promote products derived
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You may not charge copyright license fees for anyone to use, copy or distribute
the FDK AAC Codec software or your modifications thereto.
Your modified versions of the FDK AAC Codec must carry prominent notices stating
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of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android"
must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK
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limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE.
Fraunhofer provides no warranty of patent non-infringement with respect to this
You may use this FDK AAC Codec software or modifications thereto only for
purposes that are authorized by appropriate patent licenses.
This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright
including but not limited to the implied warranties of merchantability and
fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary,
or consequential damages, including but not limited to procurement of substitute
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Fraunhofer Institute for Integrated Circuits IIS
Attention: Audio and Multimedia Departments - FDK AAC LL
Am Wolfsmantel 33
91058 Erlangen, Germany
----------------------------------------------------------------------------- */
/**************************** SBR decoder library ******************************
Author(s): Matthias Hildenbrand
Description: Decode Predictive Vector Coding Data
#include "pvc_dec.h"
/* PVC interal definitions */
#define PVC_PVCID_BITS 7
#define PVC_NQMFBAND 64
#define PVC_NBLOW 3 /* max. number of grouped QMF subbands below SBR range */
#define PVC_NTAB1 3
#define PVC_NTAB2 128
#define PVC_ID_NBIT 7
/* Exponent of pPvcStaticData->Esg and predictedEsg in dB domain.
max(Esg) = 10*log10(2^15*2^15) = 90.30;
min(Esg) = 10*log10(0.1) = -10
max of predicted Esg seems to be higher than 90dB but 7 Bit should be enough.
#define PVC_ESG_EXP 7
#define LOG10FAC 0.752574989159953f /* == 10/log2(10) * 2^-2 */
#define LOG10FAC_INV 0.664385618977472f /* == log2(10)/10 * 2^1 */
static const FIXP_SGL pvc_SC_16[] = {
FX_DBL2FXCONST_SGL(0x14413695), FX_DBL2FXCONST_SGL(0x1434b6cb),
FX_DBL2FXCONST_SGL(0x140f27c7), FX_DBL2FXCONST_SGL(0x13d0591d),
FX_DBL2FXCONST_SGL(0x1377f502), FX_DBL2FXCONST_SGL(0x130577d6),
FX_DBL2FXCONST_SGL(0x12782266), FX_DBL2FXCONST_SGL(0x11cee459),
FX_DBL2FXCONST_SGL(0x11083a2a), FX_DBL2FXCONST_SGL(0x1021f5e9),
FX_DBL2FXCONST_SGL(0x0f18e17c), FX_DBL2FXCONST_SGL(0x0de814ca),
FX_DBL2FXCONST_SGL(0x0c87a568), FX_DBL2FXCONST_SGL(0x0ae9b167),
FX_DBL2FXCONST_SGL(0x08f24226), FX_DBL2FXCONST_SGL(0x06575ed5),
static const FIXP_SGL pvc_SC_12[] = {
FX_DBL2FXCONST_SGL(0x1aba6b3e), FX_DBL2FXCONST_SGL(0x1a9d164e),
FX_DBL2FXCONST_SGL(0x1a44d56d), FX_DBL2FXCONST_SGL(0x19b0d742),
FX_DBL2FXCONST_SGL(0x18df969a), FX_DBL2FXCONST_SGL(0x17ce91a0),
FX_DBL2FXCONST_SGL(0x1679c3fa), FX_DBL2FXCONST_SGL(0x14daabfc),
FX_DBL2FXCONST_SGL(0x12e65221), FX_DBL2FXCONST_SGL(0x1088d125),
FX_DBL2FXCONST_SGL(0x0d9907b3), FX_DBL2FXCONST_SGL(0x09a80e9d),
static const FIXP_SGL pvc_SC_4[] = {
static const FIXP_SGL pvc_SC_3[] = {
static const UCHAR g_3a_pvcTab1_mode1[PVC_NTAB1][PVC_NBLOW][PVC_NBHIGH_MODE1] =
{{{0x4F, 0x5B, 0x57, 0x52, 0x4D, 0x65, 0x45, 0x57},
{0xF3, 0x0F, 0x18, 0x20, 0x19, 0x4F, 0x3D, 0x23},
{0x78, 0x57, 0x55, 0x50, 0x50, 0x20, 0x36, 0x37}},
{{0x4C, 0x5F, 0x53, 0x37, 0x1E, 0xFD, 0x15, 0x0A},
{0x05, 0x0E, 0x28, 0x41, 0x48, 0x6E, 0x54, 0x5B},
{0x59, 0x47, 0x40, 0x40, 0x3D, 0x33, 0x3F, 0x39}},
{{0x47, 0x5F, 0x57, 0x34, 0x3C, 0x2E, 0x2E, 0x31},
{0xFA, 0x13, 0x23, 0x4E, 0x44, 0x7C, 0x34, 0x38},
{0x63, 0x43, 0x41, 0x3D, 0x35, 0x19, 0x3D, 0x33}}};
static const UCHAR g_2a_pvcTab2_mode1[PVC_NTAB2][PVC_NBHIGH_MODE1] = {
{0xCB, 0xD1, 0xCC, 0xD2, 0xE2, 0xEB, 0xE7, 0xE8},
{0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80},
{0x84, 0x8C, 0x88, 0x83, 0x90, 0x93, 0x86, 0x80},
{0xD7, 0xD8, 0xC0, 0xC7, 0xCF, 0xE5, 0xF1, 0xF6},
{0xA5, 0xA6, 0xAA, 0xA8, 0xB0, 0xB1, 0xB8, 0xB8},
{0xD7, 0xCB, 0xC1, 0xC3, 0xC5, 0xC9, 0xC9, 0xCE},
{0xCA, 0xB5, 0xB8, 0xB3, 0xAC, 0xB6, 0xBB, 0xB8},
{0xC1, 0xC4, 0xC3, 0xC5, 0xC6, 0xCA, 0xCA, 0xCB},
{0xE0, 0xE1, 0xD8, 0xCD, 0xCB, 0xCB, 0xCE, 0xCC},
{0xDB, 0xE1, 0xDF, 0xDB, 0xDC, 0xD9, 0xD9, 0xD6},
{0xE0, 0xDE, 0xDD, 0xDD, 0xE0, 0xE3, 0xE5, 0xE6},
{0xCA, 0xD2, 0xCD, 0xCE, 0xD5, 0xDB, 0xD9, 0xDB},
{0xD2, 0xE0, 0xDB, 0xD5, 0xDB, 0xDE, 0xE3, 0xE1},
{0xE5, 0xDB, 0xD0, 0xD2, 0xD8, 0xDD, 0xDB, 0xDD},
{0xC0, 0xB5, 0xBF, 0xDD, 0xE3, 0xDC, 0xDC, 0xE4},
{0xDB, 0xCE, 0xC6, 0xCF, 0xCF, 0xD1, 0xD3, 0xD4},
{0xC9, 0xD7, 0xDA, 0xE2, 0xE9, 0xE7, 0xDF, 0xDC},
{0x0A, 0x07, 0x0A, 0x08, 0x19, 0x24, 0x1F, 0x22},
{0x1E, 0x1F, 0x11, 0x0E, 0x22, 0x2D, 0x33, 0x32},
{0xF0, 0xDA, 0xDC, 0x18, 0x1F, 0x19, 0x0A, 0x1E},
{0x09, 0xF8, 0xE6, 0x05, 0x19, 0x11, 0x0E, 0x0B},
{0x09, 0x10, 0x0E, 0xE6, 0xF4, 0x20, 0x22, 0xFA},
{0xF2, 0xE5, 0xF8, 0x0E, 0x18, 0x15, 0x0D, 0x10},
{0x15, 0x13, 0x16, 0x0A, 0x0D, 0x1F, 0x1D, 0x1B},
{0xFA, 0xFF, 0xFE, 0xFF, 0x09, 0x11, 0x03, 0x0B},
{0xFE, 0xFA, 0xF2, 0xF8, 0x0C, 0x1E, 0x11, 0x12},
{0xFA, 0xF8, 0x0B, 0x17, 0x1D, 0x17, 0x0E, 0x16},
{0x00, 0xF3, 0xFD, 0x0A, 0x1C, 0x17, 0xFD, 0x08},
{0xEA, 0xEA, 0x03, 0x12, 0x1E, 0x14, 0x09, 0x04},
{0x02, 0xFE, 0x04, 0xFB, 0x0C, 0x0E, 0x07, 0x02},
{0xF6, 0x02, 0x07, 0x0B, 0x17, 0x17, 0x01, 0xFF},
{0xF5, 0xFB, 0xFE, 0x04, 0x12, 0x14, 0x0C, 0x0D},
{0x10, 0x10, 0x0E, 0x04, 0x07, 0x11, 0x0F, 0x13},
{0x0C, 0x0F, 0xFB, 0xF2, 0x0A, 0x12, 0x09, 0x0D},
{0x0D, 0x1D, 0xF1, 0xF4, 0x2A, 0x06, 0x3B, 0x32},
{0xFC, 0x08, 0x06, 0x02, 0x0E, 0x17, 0x08, 0x0E},
{0x07, 0x02, 0xEE, 0xEE, 0x2B, 0xF6, 0x23, 0x13},
{0x04, 0x02, 0x05, 0x08, 0x0B, 0x0E, 0xFB, 0xFB},
{0x00, 0x04, 0x10, 0x18, 0x22, 0x25, 0x1D, 0x1F},
{0xFB, 0x0D, 0x07, 0x00, 0x0C, 0x0F, 0xFC, 0x02},
{0x00, 0x00, 0x00, 0x01, 0x05, 0x07, 0x03, 0x05},
{0x04, 0x05, 0x08, 0x13, 0xFF, 0xEB, 0x0C, 0x06},
{0x05, 0x13, 0x0E, 0x0B, 0x12, 0x15, 0x09, 0x0A},
{0x09, 0x03, 0x09, 0x05, 0x12, 0x16, 0x11, 0x12},
{0x14, 0x1A, 0x06, 0x01, 0x10, 0x11, 0xFE, 0x02},
{0x01, 0x0B, 0x0B, 0x0C, 0x18, 0x21, 0x10, 0x13},
{0x12, 0x0D, 0x0A, 0x10, 0x1C, 0x1D, 0x0D, 0x10},
{0x03, 0x09, 0x14, 0x15, 0x1B, 0x1A, 0x01, 0xFF},
{0x08, 0x12, 0x13, 0x0E, 0x16, 0x1D, 0x14, 0x1B},
{0x07, 0x15, 0x1C, 0x1B, 0x20, 0x21, 0x11, 0x0E},
{0x12, 0x18, 0x19, 0x17, 0x20, 0x25, 0x1A, 0x1E},
{0x0C, 0x1A, 0x1D, 0x22, 0x2F, 0x33, 0x27, 0x28},
{0x0E, 0x1A, 0x17, 0x10, 0x0A, 0x0E, 0xFF, 0x06},
{0x1A, 0x1C, 0x18, 0x14, 0x1A, 0x16, 0x0A, 0x0E},
{0x1E, 0x27, 0x25, 0x26, 0x27, 0x2A, 0x21, 0x21},
{0xF1, 0x0A, 0x16, 0x1C, 0x28, 0x25, 0x15, 0x19},
{0x08, 0x12, 0x09, 0x08, 0x16, 0x17, 0xEF, 0xF6},
{0x0C, 0x0B, 0x00, 0xFC, 0x04, 0x09, 0xFC, 0x03},
{0xFB, 0xF1, 0xF8, 0x26, 0x24, 0x18, 0x1D, 0x20},
{0xF9, 0x01, 0x0C, 0x0F, 0x07, 0x08, 0x06, 0x07},
{0x07, 0x06, 0x08, 0x04, 0x07, 0x0D, 0x07, 0x09},
{0xFE, 0x01, 0x06, 0x05, 0x13, 0x1B, 0x14, 0x19},
{0x09, 0x0C, 0x0E, 0x01, 0x08, 0x05, 0xFB, 0xFD},
{0x07, 0x06, 0x03, 0x0A, 0x16, 0x12, 0x04, 0x07},
{0x04, 0x01, 0x00, 0x04, 0x1F, 0x20, 0x0E, 0x0A},
{0x03, 0xFF, 0xF6, 0xFB, 0x15, 0x1A, 0x00, 0x03},
{0xFC, 0x18, 0x0B, 0x2D, 0x35, 0x23, 0x12, 0x09},
{0x02, 0xFE, 0x01, 0xFF, 0x0C, 0x11, 0x0D, 0x0F},
{0xFA, 0xE9, 0xD9, 0xFF, 0x0D, 0x05, 0x0D, 0x10},
{0xF1, 0xE0, 0xF0, 0x01, 0x06, 0x06, 0x06, 0x10},
{0xE9, 0xD4, 0xD7, 0x0F, 0x14, 0x0B, 0x0D, 0x16},
{0x00, 0xFF, 0xEE, 0xE5, 0xFF, 0x08, 0x02, 0xF9},
{0xE0, 0xDA, 0xE5, 0xFE, 0x09, 0x02, 0xF9, 0x04},
{0xE0, 0xE2, 0xF4, 0x09, 0x13, 0x0C, 0x0D, 0x09},
{0xFC, 0x02, 0x04, 0xFF, 0x00, 0xFF, 0xF8, 0xF7},
{0xFE, 0xFB, 0xED, 0xF2, 0xFE, 0xFE, 0x08, 0x0C},
{0xF3, 0xEF, 0xD0, 0xE3, 0x05, 0x11, 0xFD, 0xFF},
{0xFA, 0xEF, 0xEA, 0xFE, 0x0D, 0x0E, 0xFE, 0x02},
{0xF7, 0xFB, 0xDB, 0xDF, 0x14, 0xDD, 0x07, 0xFE},
{0xFE, 0x08, 0x00, 0xDB, 0xE5, 0x1A, 0x13, 0xED},
{0xF9, 0xFE, 0xFF, 0xF4, 0xF3, 0x00, 0x05, 0x02},
{0xEF, 0xDE, 0xD8, 0xEB, 0xEA, 0xF5, 0x0E, 0x19},
{0xFB, 0xFC, 0xFA, 0xEC, 0xEB, 0xED, 0xEE, 0xE8},
{0xEE, 0xFC, 0xFD, 0x00, 0x04, 0xFC, 0xF0, 0xF5},
{0x00, 0xFA, 0xF4, 0xF1, 0xF5, 0xFA, 0xFB, 0xF9},
{0xEB, 0xF0, 0xDF, 0xE3, 0xEF, 0x07, 0x02, 0x05},
{0xF7, 0xF0, 0xE6, 0xE7, 0x06, 0x15, 0x06, 0x0C},
{0xF1, 0xE4, 0xD8, 0xEA, 0x06, 0xF2, 0x07, 0x09},
{0xFF, 0xFE, 0xFE, 0xF9, 0xFF, 0xFF, 0x02, 0xF9},
{0xDD, 0xF4, 0xF0, 0xF1, 0xFF, 0xFF, 0xEA, 0xF1},
{0xF0, 0xF1, 0xFD, 0x03, 0x03, 0xFE, 0x00, 0x05},
{0xF1, 0xF6, 0xE0, 0xDF, 0xF5, 0x01, 0xF4, 0xF8},
{0x02, 0x03, 0xE5, 0xDC, 0xE7, 0xFD, 0x02, 0x08},
{0xEC, 0xF1, 0xF5, 0xEC, 0xF2, 0xF8, 0xF6, 0xEE},
{0xF3, 0xF4, 0xF6, 0xF4, 0xF5, 0xF1, 0xE7, 0xEA},
{0xF7, 0xF3, 0xEC, 0xEA, 0xEF, 0xF0, 0xEE, 0xF1},
{0xEB, 0xF6, 0xFB, 0xFA, 0xEF, 0xF3, 0xF3, 0xF7},
{0x01, 0x03, 0xF1, 0xF6, 0x05, 0xF8, 0xE1, 0xEB},
{0xF5, 0xF6, 0xF6, 0xF4, 0xFB, 0xFB, 0xFF, 0x00},
{0xF8, 0x01, 0xFB, 0xFA, 0xFF, 0x03, 0xFE, 0x04},
{0x04, 0xFB, 0x03, 0xFD, 0xF5, 0xF7, 0xF6, 0xFB},
{0x06, 0x09, 0xFB, 0xF4, 0xF9, 0xFA, 0xFC, 0xFF},
{0xF5, 0xF6, 0xF1, 0xEE, 0xF5, 0xF8, 0xF5, 0xF9},
{0xF5, 0xF9, 0xFA, 0xFC, 0x07, 0x09, 0x01, 0xFB},
{0xD7, 0xE9, 0xE8, 0xEC, 0x00, 0x0C, 0xFE, 0xF1},
{0xEC, 0x04, 0xE9, 0xDF, 0x03, 0xE8, 0x00, 0xFA},
{0xE6, 0xE2, 0xFF, 0x0A, 0x13, 0x01, 0x00, 0xF7},
{0xF1, 0xFA, 0xF7, 0xF5, 0x01, 0x06, 0x05, 0x0A},
{0xF6, 0xF6, 0xFC, 0xF6, 0xE8, 0x11, 0xF2, 0xFE},
{0xFE, 0x08, 0x05, 0x12, 0xFD, 0xD0, 0x0E, 0x07},
{0xF1, 0xFE, 0xF7, 0xF2, 0xFB, 0x02, 0xFA, 0xF8},
{0xF4, 0xEA, 0xEC, 0xF3, 0xFE, 0x01, 0xF7, 0xF6},
{0xFF, 0xFA, 0xFB, 0xF9, 0xFF, 0x01, 0x04, 0x03},
{0x00, 0xF9, 0xF4, 0xFC, 0x05, 0xFC, 0xF7, 0xFB},
{0xF8, 0xFF, 0xEF, 0xEC, 0xFB, 0x04, 0xF8, 0x03},
{0xEB, 0xF1, 0xED, 0xF4, 0x02, 0x0E, 0x0B, 0x04},
{0xF7, 0x01, 0xF8, 0xF4, 0xF8, 0xEF, 0xF8, 0x04},
{0xEB, 0xF0, 0xF7, 0xFC, 0x10, 0x0D, 0xF8, 0xF8},
{0xE8, 0xFE, 0xEE, 0xE8, 0xED, 0xF7, 0xF5, 0xF8},
{0xED, 0xEB, 0xE9, 0xEA, 0xF2, 0xF5, 0xF4, 0xF9},
{0xEA, 0xF2, 0xEF, 0xEE, 0xF9, 0xFE, 0xFD, 0x02},
{0xFA, 0xFD, 0x02, 0x0D, 0xFA, 0xE4, 0x0F, 0x01},
{0xFF, 0x08, 0x05, 0xF6, 0xF7, 0xFB, 0xF1, 0xF1},
{0xF4, 0xEC, 0xEE, 0xF6, 0xEE, 0xEE, 0xF8, 0x06},
{0xE8, 0xFA, 0xF8, 0xE8, 0xF8, 0xE9, 0xEE, 0xF9},
{0xE5, 0xE9, 0xF0, 0x00, 0x00, 0xEF, 0xF3, 0xF8},
{0xF7, 0xFB, 0xFB, 0xF7, 0xF9, 0xF9, 0xF5, 0xF0},
{0xFD, 0xFF, 0xF2, 0xEE, 0xF2, 0xF5, 0xF1, 0xF3}};
static const UCHAR g_3a_pvcTab1_mode2[PVC_NTAB1][PVC_NBLOW][PVC_NBHIGH_MODE2] =
{{{0x11, 0x27, 0x0F, 0xFD, 0x04, 0xFC},
{0x00, 0xBE, 0xE3, 0xF4, 0xDB, 0xF0},
{0x09, 0x1E, 0x18, 0x1A, 0x21, 0x1B}},
{{0x16, 0x28, 0x2B, 0x29, 0x25, 0x32},
{0xF2, 0xE9, 0xE4, 0xE5, 0xE2, 0xD4},
{0x0E, 0x0B, 0x0C, 0x0D, 0x0D, 0x0E}},
{{0x2E, 0x3C, 0x20, 0x16, 0x1B, 0x1A},
{0xE4, 0xC6, 0xE5, 0xF4, 0xDC, 0xDC},
{0x0F, 0x1B, 0x18, 0x14, 0x1E, 0x1A}}};
static const UCHAR g_2a_pvcTab2_mode2[PVC_NTAB2][PVC_NBHIGH_MODE2] = {
{0x26, 0x25, 0x11, 0x0C, 0xFA, 0x15}, {0x1B, 0x18, 0x11, 0x0E, 0x0E, 0x0E},
{0x12, 0x10, 0x10, 0x10, 0x11, 0x10}, {0x1E, 0x24, 0x19, 0x15, 0x14, 0x12},
{0x24, 0x16, 0x12, 0x13, 0x15, 0x1C}, {0xEA, 0xED, 0xEB, 0xEA, 0xEC, 0xEB},
{0xFC, 0xFD, 0xFD, 0xFC, 0xFE, 0xFE}, {0x0F, 0x0C, 0x0B, 0x0A, 0x0B, 0x0B},
{0x22, 0x0B, 0x16, 0x18, 0x13, 0x19}, {0x1C, 0x14, 0x1D, 0x20, 0x19, 0x1A},
{0x10, 0x08, 0x00, 0xFF, 0x02, 0x05}, {0x06, 0x07, 0x05, 0x03, 0x05, 0x04},
{0x2A, 0x1F, 0x12, 0x12, 0x11, 0x18}, {0x19, 0x19, 0x02, 0x04, 0x00, 0x04},
{0x18, 0x17, 0x17, 0x15, 0x16, 0x15}, {0x21, 0x1E, 0x1B, 0x19, 0x1C, 0x1B},
{0x3C, 0x35, 0x20, 0x1D, 0x30, 0x34}, {0x3A, 0x1F, 0x37, 0x38, 0x33, 0x31},
{0x37, 0x34, 0x25, 0x27, 0x35, 0x34}, {0x34, 0x2E, 0x32, 0x31, 0x34, 0x31},
{0x36, 0x33, 0x2F, 0x2F, 0x32, 0x2F}, {0x35, 0x20, 0x2F, 0x32, 0x2F, 0x2C},
{0x2E, 0x2B, 0x2F, 0x34, 0x36, 0x30}, {0x3F, 0x39, 0x30, 0x28, 0x29, 0x29},
{0x3C, 0x30, 0x32, 0x37, 0x39, 0x36}, {0x37, 0x36, 0x30, 0x2B, 0x26, 0x24},
{0x44, 0x38, 0x2F, 0x2D, 0x2D, 0x2D}, {0x38, 0x2B, 0x2C, 0x2C, 0x30, 0x2D},
{0x37, 0x36, 0x2F, 0x23, 0x2D, 0x32}, {0x3C, 0x39, 0x29, 0x2E, 0x38, 0x37},
{0x3B, 0x3A, 0x35, 0x32, 0x31, 0x2D}, {0x32, 0x31, 0x2F, 0x2C, 0x2D, 0x28},
{0x2C, 0x31, 0x32, 0x30, 0x32, 0x2D}, {0x35, 0x34, 0x34, 0x34, 0x35, 0x33},
{0x34, 0x38, 0x3B, 0x3C, 0x3E, 0x3A}, {0x3E, 0x3C, 0x3B, 0x3A, 0x3C, 0x39},
{0x3D, 0x41, 0x46, 0x41, 0x3D, 0x38}, {0x44, 0x41, 0x40, 0x3E, 0x3F, 0x3A},
{0x47, 0x47, 0x47, 0x42, 0x44, 0x40}, {0x4C, 0x4A, 0x4A, 0x46, 0x49, 0x45},
{0x53, 0x52, 0x52, 0x4C, 0x4E, 0x49}, {0x41, 0x3D, 0x39, 0x2C, 0x2E, 0x2E},
{0x2D, 0x37, 0x36, 0x30, 0x28, 0x36}, {0x3B, 0x32, 0x2E, 0x2D, 0x2D, 0x29},
{0x40, 0x39, 0x36, 0x35, 0x36, 0x32}, {0x30, 0x2D, 0x2D, 0x2E, 0x31, 0x30},
{0x38, 0x3D, 0x3B, 0x37, 0x35, 0x34}, {0x44, 0x3D, 0x3C, 0x38, 0x37, 0x33},
{0x3A, 0x36, 0x37, 0x37, 0x39, 0x36}, {0x32, 0x36, 0x37, 0x30, 0x2E, 0x2A},
{0x3C, 0x33, 0x33, 0x31, 0x33, 0x30}, {0x30, 0x31, 0x36, 0x37, 0x38, 0x34},
{0x26, 0x27, 0x2E, 0x29, 0x1C, 0x16}, {0x14, 0x15, 0x1F, 0x17, 0x15, 0x1C},
{0x38, 0x2D, 0x18, 0x13, 0x1E, 0x2B}, {0x30, 0x22, 0x17, 0x1A, 0x26, 0x2B},
{0x24, 0x20, 0x1F, 0x10, 0x0C, 0x11}, {0x27, 0x1F, 0x13, 0x17, 0x24, 0x2A},
{0x2F, 0x13, 0x18, 0x13, 0x2A, 0x32}, {0x31, 0x1E, 0x1E, 0x1E, 0x21, 0x28},
{0x2A, 0x12, 0x19, 0x17, 0x16, 0x24}, {0x27, 0x0F, 0x16, 0x1D, 0x17, 0x1C},
{0x2F, 0x26, 0x25, 0x22, 0x20, 0x22}, {0x1E, 0x1B, 0x1E, 0x18, 0x1E, 0x24},
{0x31, 0x26, 0x0E, 0x15, 0x15, 0x25}, {0x2D, 0x22, 0x1E, 0x14, 0x10, 0x22},
{0x25, 0x1B, 0x18, 0x11, 0x13, 0x1F}, {0x2F, 0x1B, 0x13, 0x1B, 0x18, 0x22},
{0x21, 0x24, 0x1D, 0x1C, 0x1D, 0x1B}, {0x23, 0x1E, 0x28, 0x29, 0x27, 0x25},
{0x2E, 0x2A, 0x1D, 0x17, 0x26, 0x2D}, {0x31, 0x2C, 0x1A, 0x0E, 0x1A, 0x24},
{0x26, 0x16, 0x20, 0x1D, 0x14, 0x1E}, {0x29, 0x20, 0x1B, 0x1B, 0x17, 0x17},
{0x1D, 0x06, 0x1A, 0x1E, 0x1B, 0x1D}, {0x2B, 0x23, 0x1F, 0x1F, 0x1D, 0x1C},
{0x27, 0x1A, 0x0C, 0x0E, 0x0F, 0x1A}, {0x29, 0x1D, 0x1E, 0x22, 0x22, 0x24},
{0x20, 0x21, 0x1B, 0x18, 0x13, 0x21}, {0x27, 0x0E, 0x10, 0x14, 0x10, 0x1A},
{0x26, 0x24, 0x25, 0x25, 0x26, 0x28}, {0x1A, 0x24, 0x25, 0x29, 0x26, 0x24},
{0x1D, 0x1D, 0x15, 0x12, 0x0F, 0x18}, {0x1E, 0x14, 0x13, 0x12, 0x14, 0x18},
{0x16, 0x13, 0x13, 0x1A, 0x1B, 0x1D}, {0x20, 0x27, 0x22, 0x24, 0x1A, 0x19},
{0x1F, 0x17, 0x19, 0x18, 0x17, 0x18}, {0x20, 0x1B, 0x1C, 0x1C, 0x1B, 0x1A},
{0x23, 0x19, 0x1D, 0x1F, 0x1E, 0x21}, {0x26, 0x1F, 0x1D, 0x1B, 0x19, 0x1A},
{0x23, 0x1E, 0x1F, 0x20, 0x1F, 0x1E}, {0x29, 0x20, 0x22, 0x20, 0x20, 0x1F},
{0x26, 0x23, 0x21, 0x22, 0x23, 0x23}, {0x29, 0x1F, 0x24, 0x25, 0x26, 0x29},
{0x2B, 0x22, 0x25, 0x27, 0x23, 0x21}, {0x29, 0x21, 0x19, 0x0E, 0x22, 0x2D},
{0x32, 0x29, 0x1F, 0x1C, 0x1B, 0x21}, {0x1E, 0x1A, 0x1E, 0x24, 0x25, 0x25},
{0x24, 0x1D, 0x21, 0x22, 0x22, 0x25}, {0x2C, 0x25, 0x21, 0x22, 0x23, 0x25},
{0x24, 0x1E, 0x21, 0x26, 0x2B, 0x2C}, {0x28, 0x24, 0x1B, 0x1F, 0x28, 0x2D},
{0x23, 0x13, 0x16, 0x22, 0x22, 0x29}, {0x1B, 0x23, 0x1C, 0x20, 0x14, 0x0D},
{0x1E, 0x16, 0x1A, 0x1E, 0x1C, 0x1D}, {0x2B, 0x1C, 0x1D, 0x20, 0x1B, 0x1C},
{0x1C, 0x1B, 0x23, 0x1F, 0x19, 0x1E}, {0x21, 0x23, 0x26, 0x20, 0x20, 0x22},
{0x1D, 0x0B, 0x19, 0x1E, 0x11, 0x19}, {0x18, 0x17, 0x16, 0x17, 0x14, 0x16},
{0x16, 0x19, 0x1C, 0x20, 0x21, 0x22}, {0x30, 0x1E, 0x22, 0x24, 0x25, 0x26},
{0x1B, 0x1F, 0x17, 0x1D, 0x1E, 0x21}, {0x32, 0x2B, 0x27, 0x1F, 0x1B, 0x1A},
{0x28, 0x20, 0x1A, 0x1B, 0x1F, 0x23}, {0x32, 0x21, 0x20, 0x21, 0x1D, 0x1F},
{0x22, 0x18, 0x12, 0x15, 0x1B, 0x20}, {0x27, 0x27, 0x2A, 0x24, 0x21, 0x21},
{0x1E, 0x0F, 0x0D, 0x1A, 0x1D, 0x23}, {0x28, 0x25, 0x27, 0x21, 0x17, 0x25},
{0x2B, 0x27, 0x23, 0x19, 0x13, 0x14}, {0x25, 0x2B, 0x22, 0x22, 0x20, 0x21},
{0x27, 0x1B, 0x16, 0x17, 0x0F, 0x15}, {0x29, 0x26, 0x23, 0x15, 0x1E, 0x28},
{0x24, 0x1C, 0x19, 0x1A, 0x18, 0x19}, {0x2D, 0x15, 0x27, 0x2B, 0x24, 0x23},
{0x2C, 0x12, 0x1F, 0x23, 0x1F, 0x20}, {0x25, 0x0F, 0x22, 0x27, 0x1F, 0x21}};
static const UCHAR g_a_pvcTab1_dp_mode1[PVC_NTAB1 - 1] = {17, 68};
static const UCHAR g_a_pvcTab1_dp_mode2[PVC_NTAB1 - 1] = {16, 52};
/* fractional exponent which corresponds to Q representation value */
static const SCHAR g_a_scalingCoef_mode1[PVC_NBLOW + 1] = {
-1, -1, 0, 6}; /* { 8, 8, 7, 1 }; Q scaling */
static const SCHAR g_a_scalingCoef_mode2[PVC_NBLOW + 1] = {
0, 0, 1, 7}; /* { 7, 7, 6, 0 }; Q scaling */
int pvcInitFrame(PVC_STATIC_DATA *pPvcStaticData,
PVC_DYNAMIC_DATA *pPvcDynamicData, const UCHAR pvcMode,
const UCHAR ns, const int RATE, const int kx,
const int pvcBorder0, const UCHAR *pPvcID) {
int lbw, hbw, i, temp;
pPvcDynamicData->pvc_mode = pvcMode;
pPvcDynamicData->kx = kx;
pPvcDynamicData->RATE = RATE;
switch (pvcMode) {
case 0:
/* legacy SBR, nothing to do */
return 0;
case 1:
pPvcDynamicData->nbHigh = 8;
pPvcDynamicData->pPVCTab1 = (const UCHAR *)g_3a_pvcTab1_mode1;
pPvcDynamicData->pPVCTab2 = (const UCHAR *)g_2a_pvcTab2_mode1;
pPvcDynamicData->pPVCTab1_dp = g_a_pvcTab1_dp_mode1;
pPvcDynamicData->pScalingCoef = g_a_scalingCoef_mode1;
hbw = 8 / RATE;
case 2:
pPvcDynamicData->nbHigh = 6;
pPvcDynamicData->pPVCTab1 = (const UCHAR *)g_3a_pvcTab1_mode2;
pPvcDynamicData->pPVCTab2 = (const UCHAR *)g_2a_pvcTab2_mode2;
pPvcDynamicData->pPVCTab1_dp = g_a_pvcTab1_dp_mode2;
pPvcDynamicData->pScalingCoef = g_a_scalingCoef_mode2;
hbw = 12 / RATE;
/* invalid pvcMode */
return 1;
pPvcDynamicData->pvcBorder0 = pvcBorder0;
UCHAR pvcBorder0_last = pPvcStaticData->pvcBorder0;
pPvcStaticData->pvcBorder0 = pvcBorder0;
pPvcDynamicData->pPvcID = pPvcID;
pPvcDynamicData->ns = ns;
switch (ns) {
case 16:
pPvcDynamicData->pSCcoeffs = pvc_SC_16;
case 12:
pPvcDynamicData->pSCcoeffs = pvc_SC_12;
case 4:
pPvcDynamicData->pSCcoeffs = pvc_SC_4;
case 3:
pPvcDynamicData->pSCcoeffs = pvc_SC_3;
return 1;
/* in the lower part of Esg-array there are previous values of Esg (from last
call to this function In case of an previous legay-SBR frame, or if there
was a change in cross-over FQ the value of first PVC SBR timeslot is
propagated to prev-values in order to have reasonable values for
if ((pPvcStaticData->pvc_mode_last == 0) || (pPvcStaticData->kx_last != kx)) {
pPvcDynamicData->pastEsgSlotsAvail = 0;
} else {
pPvcDynamicData->pastEsgSlotsAvail = PVC_NS_MAX - pvcBorder0_last;
lbw = 8 / RATE;
temp = kx;
for (i = PVC_NBLOW; i >= 0; i--) {
pPvcDynamicData->sg_offset_low[i] = temp;
temp -= lbw;
temp = 0;
for (i = 0; i <= pPvcDynamicData->nbHigh; i++) {
pPvcDynamicData->sg_offset_high_kx[i] = temp;
temp += hbw;
return 0;
/* call if pvcMode = 1,2 */
void pvcDecodeFrame(PVC_STATIC_DATA *pPvcStaticData,
PVC_DYNAMIC_DATA *pPvcDynamicData, FIXP_DBL **qmfBufferReal,
FIXP_DBL **qmfBufferImag, const int overlap,
const int qmfExponentOverlap,
const int qmfExponentCurrent) {
int t;
FIXP_DBL *predictedEsgSlot;
int RATE = pPvcDynamicData->RATE;
int pvcBorder0 = pPvcDynamicData->pvcBorder0;
for (t = pvcBorder0; t < PVC_NTIMESLOT; t++) {
int *pPredEsg_exp = &pPvcDynamicData->predEsg_exp[t];
predictedEsgSlot = pPvcDynamicData->predEsg[t];
pPvcStaticData, pPvcDynamicData, &qmfBufferReal[t * RATE],
&qmfBufferImag[t * RATE],
(t * RATE < overlap) ? qmfExponentOverlap : qmfExponentCurrent,
pvcBorder0, t, predictedEsgSlot, pPredEsg_exp);
void pvcDecodeTimeSlot(PVC_STATIC_DATA *pPvcStaticData,
PVC_DYNAMIC_DATA *pPvcDynamicData,
FIXP_DBL **qmfSlotReal, FIXP_DBL **qmfSlotImag,
const int qmfExponent, const int pvcBorder0,
const int timeSlotNumber, FIXP_DBL predictedEsgSlot[],
int *predictedEsg_exp) {
int i, band, ksg, ksg_start = 0;
int RATE = pPvcDynamicData->RATE;
int Esg_index = pPvcStaticData->Esg_slot_index;
const SCHAR *sg_borders = pPvcDynamicData->sg_offset_low;
FIXP_DBL *pEsg = pPvcStaticData->Esg[Esg_index];
/* Subband grouping in QMF subbands below SBR range */
/* Within one timeslot ( i = [0...(RATE-1)] QMF subsamples) calculate energy
E(ib,t) and group them to Esg(ksg,t). Then transfer values to logarithmical
domain and store them for time domain smoothing. ( Subband grouping
in QMF subbands below SBR range)
for (ksg = 0; sg_borders[ksg] < 0; ksg++) {
pEsg[ksg] = FL2FXCONST_DBL(-10.0 / (1 << PVC_ESG_EXP)); /* 10*log10(0.1) */
for (i = 0; i < RATE; i++) {
FIXP_DBL *qmfR, *qmfI;
qmfR = qmfSlotReal[i];
qmfI = qmfSlotImag[i];
for (ksg = ksg_start; ksg < PVC_NBLOW; ksg++) {
for (band = sg_borders[ksg]; band < sg_borders[ksg + 1]; band++) {
/* The division by 8 == (RATE*lbw) is required algorithmically */
E[ksg] += (fPow2Div2(qmfR[band]) + fPow2Div2(qmfI[band])) >> 2;
for (ksg = ksg_start; ksg < PVC_NBLOW; ksg++) {
if (E[ksg] > (FIXP_DBL)0) {
/* 10/log2(10) = 0.752574989159953 * 2^2 */
int exp_log;
FIXP_DBL nrg = CalcLog2(E[ksg], 2 * qmfExponent, &exp_log);
nrg = fMult(nrg, FL2FXCONST_SGL(LOG10FAC));
nrg = scaleValue(nrg, exp_log - PVC_ESG_EXP + 2);
pEsg[ksg] = fMax(nrg, FL2FXCONST_DBL(-10.0 / (1 << PVC_ESG_EXP)));
} else {
pEsg[ksg] =
FL2FXCONST_DBL(-10.0 / (1 << PVC_ESG_EXP)); /* 10*log10(0.1) */
/* Time domain smoothing of subband-grouped energy */
int idx = pPvcStaticData->Esg_slot_index;
FIXP_DBL *pEsg_filt;
E[0] = E[1] = E[2] = (FIXP_DBL)0;
for (i = 0; i < pPvcDynamicData->ns; i++) {
SCcoeff = pPvcDynamicData->pSCcoeffs[i];
pEsg_filt = pPvcStaticData->Esg[idx];
/* Div2 is compensated by scaling of coeff table */
E[0] = fMultAddDiv2(E[0], pEsg_filt[0], SCcoeff);
E[1] = fMultAddDiv2(E[1], pEsg_filt[1], SCcoeff);
E[2] = fMultAddDiv2(E[2], pEsg_filt[2], SCcoeff);
if (i >= pPvcDynamicData->pastEsgSlotsAvail) {
/* if past Esg values are not available use the ones from the last valid
* slot */
if (idx > 0) {
} else {
idx += PVC_NS_MAX - 1;
/* SBR envelope scalefactor prediction */
int E_high_exp[PVC_NBHIGH_MAX];
int E_high_exp_max = 0;
int pvcTab1ID;
int pvcTab2ID = (int)pPvcDynamicData->pPvcID[timeSlotNumber];
const UCHAR *pTab1, *pTab2;
if (pvcTab2ID < pPvcDynamicData->pPVCTab1_dp[0]) {
pvcTab1ID = 0;
} else if (pvcTab2ID < pPvcDynamicData->pPVCTab1_dp[1]) {
pvcTab1ID = 1;
} else {
pvcTab1ID = 2;
pTab1 = &(pPvcDynamicData
->pPVCTab1[pvcTab1ID * PVC_NBLOW * pPvcDynamicData->nbHigh]);
pTab2 = &(pPvcDynamicData->pPVCTab2[pvcTab2ID * pPvcDynamicData->nbHigh]);
for (ksg = 0; ksg < pPvcDynamicData->nbHigh; ksg++) {
FIXP_SGL predCoeff;
FIXP_DBL accu;
int predCoeff_exp, kb;
E_high_exp[ksg] = 0;
/* residual part */
accu = ((LONG)(SCHAR)*pTab2++) << (DFRACT_BITS - 8 - PVC_ESG_EXP +
/* linear combination of lower grouped energies part */
for (kb = 0; kb < PVC_NBLOW; kb++) {
predCoeff = (FIXP_SGL)(
(SHORT)(SCHAR)pTab1[kb * pPvcDynamicData->nbHigh + ksg] << 8);
predCoeff_exp = pPvcDynamicData->pScalingCoef[kb] +
1; /* +1 to compensate for Div2 */
accu += fMultDiv2(E[kb], predCoeff) << predCoeff_exp;
/* convert back to linear domain */
accu = fMult(accu, FL2FXCONST_SGL(LOG10FAC_INV));
accu = f2Pow(
accu, PVC_ESG_EXP - 1,
&predCoeff_exp); /* -1 compensates for exponent of LOG10FAC_INV */
predictedEsgSlot[ksg] = accu;
E_high_exp[ksg] = predCoeff_exp;
if (predCoeff_exp > E_high_exp_max) {
E_high_exp_max = predCoeff_exp;
/* rescale output vector according to largest exponent */
for (ksg = 0; ksg < pPvcDynamicData->nbHigh; ksg++) {
int scale = E_high_exp[ksg] - E_high_exp_max;
predictedEsgSlot[ksg] = scaleValue(predictedEsgSlot[ksg], scale);
*predictedEsg_exp = E_high_exp_max;
pPvcStaticData->Esg_slot_index =
(pPvcStaticData->Esg_slot_index + 1) & (PVC_NS_MAX - 1);
pPvcDynamicData->pastEsgSlotsAvail =
fMin(pPvcDynamicData->pastEsgSlotsAvail + 1, PVC_NS_MAX - 1);
/* call if pvcMode = 0,1,2 */
void pvcEndFrame(PVC_STATIC_DATA *pPvcStaticData,
PVC_DYNAMIC_DATA *pPvcDynamicData) {
pPvcStaticData->pvc_mode_last = pPvcDynamicData->pvc_mode;
pPvcStaticData->kx_last = pPvcDynamicData->kx;
if (pPvcDynamicData->pvc_mode == 0) return;
int t, max = -100;
for (t = pPvcDynamicData->pvcBorder0; t < PVC_NTIMESLOT; t++) {
if (pPvcDynamicData->predEsg_exp[t] > max) {
max = pPvcDynamicData->predEsg_exp[t];
pPvcDynamicData->predEsg_expMax = max;
void expandPredEsg(const PVC_DYNAMIC_DATA *pPvcDynamicData, const int timeSlot,
const int lengthOutputVector, FIXP_DBL *pOutput,
SCHAR *pOutput_exp) {
int k = 0, ksg;
const FIXP_DBL *predEsg = pPvcDynamicData->predEsg[timeSlot];
for (ksg = 0; ksg < pPvcDynamicData->nbHigh; ksg++) {
for (; k < pPvcDynamicData->sg_offset_high_kx[ksg + 1]; k++) {
pOutput[k] = predEsg[ksg];
pOutput_exp[k] = (SCHAR)pPvcDynamicData->predEsg_exp[timeSlot];
for (; k < lengthOutputVector; k++) {
pOutput[k] = predEsg[ksg];
pOutput_exp[k] = (SCHAR)pPvcDynamicData->predEsg_exp[timeSlot];