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authorMatthias P. Braendli <matthias.braendli@mpb.li>2016-09-10 20:15:44 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2016-09-10 20:15:44 +0200
commit14c7b800eaa23e9da7c92c7c4df397d0c191f097 (patch)
treed840b6ec41ff74d1184ca1dcd7731d08f1e9ebbb /libAACenc/src/psy_configuration.cpp
parent78a801e4d716c6f2403cc56cf6c5b6f138f24b2f (diff)
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Remove FDK-AAC
Diffstat (limited to 'libAACenc/src/psy_configuration.cpp')
-rw-r--r--libAACenc/src/psy_configuration.cpp828
1 files changed, 0 insertions, 828 deletions
diff --git a/libAACenc/src/psy_configuration.cpp b/libAACenc/src/psy_configuration.cpp
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--- a/libAACenc/src/psy_configuration.cpp
+++ /dev/null
@@ -1,828 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-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 specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) 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.
-
-2. COPYRIGHT LICENSE
-
-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 from this library without
-prior written permission.
-
-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 that you changed the software
-and the date of any change. For modified versions 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 AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, 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 goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/******************************** MPEG Audio Encoder **************************
-
- Initial author: M.Werner
- contents/description: Psychoaccoustic configuration
-
-******************************************************************************/
-
-#include "psy_configuration.h"
-#include "adj_thr.h"
-#include "aacEnc_rom.h"
-
-#include "genericStds.h"
-
-#include "FDK_trigFcts.h"
-
-typedef struct{
- LONG sampleRate;
- const SFB_PARAM_LONG *paramLong;
- const SFB_PARAM_SHORT *paramShort;
-}SFB_INFO_TAB;
-
-
-static const SFB_INFO_TAB sfbInfoTab[] = {
- {8000, &p_FDKaacEnc_8000_long_1024, &p_FDKaacEnc_8000_short_128},
- {11025, &p_FDKaacEnc_11025_long_1024, &p_FDKaacEnc_11025_short_128},
- {12000, &p_FDKaacEnc_12000_long_1024, &p_FDKaacEnc_12000_short_128},
- {16000, &p_FDKaacEnc_16000_long_1024, &p_FDKaacEnc_16000_short_128},
- {22050, &p_FDKaacEnc_22050_long_1024, &p_FDKaacEnc_22050_short_128},
- {24000, &p_FDKaacEnc_24000_long_1024, &p_FDKaacEnc_24000_short_128},
- {32000, &p_FDKaacEnc_32000_long_1024, &p_FDKaacEnc_32000_short_128},
- {44100, &p_FDKaacEnc_44100_long_1024, &p_FDKaacEnc_44100_short_128},
- {48000, &p_FDKaacEnc_48000_long_1024, &p_FDKaacEnc_48000_short_128},
- {64000, &p_FDKaacEnc_64000_long_1024, &p_FDKaacEnc_64000_short_128},
- {88200, &p_FDKaacEnc_88200_long_1024, &p_FDKaacEnc_88200_short_128},
- {96000, &p_FDKaacEnc_96000_long_1024, &p_FDKaacEnc_96000_short_128}
-
-};
-
-
-
-const SFB_PARAM_LONG p_FDKaacEnc_8000_long_960 = {
- 40,
- { 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 16,
- 16, 16, 16, 16, 16, 16, 20, 20, 20, 20, 24, 24, 24, 28,
- 28, 32, 36, 36, 40, 44, 48, 52, 56, 60, 64, 16 }
-};
-const SFB_PARAM_SHORT p_FDKaacEnc_8000_short_120 = {
- 15,
- { 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 12, 16, 20, 12 }
-};
-
-const SFB_PARAM_LONG p_FDKaacEnc_11025_long_960 = {
- 42,
- { 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24,
- 24, 28, 28, 32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64 }
-};
-const SFB_PARAM_SHORT p_FDKaacEnc_11025_short_120 = {
- 15,
- { 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 12 }
-};
-
-const SFB_PARAM_LONG p_FDKaacEnc_12000_long_960 = {
- 42,
- { 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24,
- 24, 28, 28, 32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64 }
-};
-const SFB_PARAM_SHORT p_FDKaacEnc_12000_short_120 = {
- 15,
- { 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 12 }
-};
-
-const SFB_PARAM_LONG p_FDKaacEnc_16000_long_960 = {
- 42,
- { 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24,
- 24, 28, 28, 32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64 }
-};
-const SFB_PARAM_SHORT p_FDKaacEnc_16000_short_120 = {
- 15,
- { 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 12 }
-};
-
-const SFB_PARAM_LONG p_FDKaacEnc_22050_long_960 = {
- 46,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8,
- 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 16, 16, 16,
- 20, 20, 24, 24, 28, 28, 32, 36, 36, 40, 44, 48, 52, 52,
- 64, 64, 64, 64 }
-};
-const SFB_PARAM_SHORT p_FDKaacEnc_22050_short_120 = {
- 15,
- { 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 12 }
-};
-
-const SFB_PARAM_LONG p_FDKaacEnc_24000_long_960 = {
- 46,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8,
- 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 16, 16, 16,
- 20, 20, 24, 24, 28, 28, 32, 36, 36, 40, 44, 48, 52, 52,
- 64, 64, 64, 64 }
-};
-const SFB_PARAM_SHORT p_FDKaacEnc_24000_short_120 = {
- 15,
- { 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 12 }
-};
-
-const SFB_PARAM_LONG p_FDKaacEnc_32000_long_960 = {
- 49,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12,
- 12, 16, 16, 20, 20, 24, 24, 28, 28, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
- 32, 32, 32, 32, 32, 32, 32, 32, 32 }
-};
-
-const SFB_PARAM_SHORT p_FDKaacEnc_32000_short_120 = {
- 14,
- { 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 8 }
-};
-
-const SFB_PARAM_LONG p_FDKaacEnc_44100_long_960 = {
- 49,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8,
- 8, 8, 8, 12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28,
- 28, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
- 32, 32, 32, 32, 32, 32, 32 }
-};
-
-const SFB_PARAM_SHORT p_FDKaacEnc_44100_short_120 = {
- 14,
- { 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 8 }
-};
-
-const SFB_PARAM_LONG p_FDKaacEnc_48000_long_960 = {
- 49,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8,
- 8, 8, 8, 12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28,
- 28, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
- 32, 32, 32, 32, 32, 32, 32 }
-};
-const SFB_PARAM_SHORT p_FDKaacEnc_48000_short_120 = {
- 14,
- { 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 8 }
-};
-
-const SFB_PARAM_LONG p_FDKaacEnc_64000_long_960 = {
- 46,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 12, 12,
- 12, 16, 16, 16, 20, 24, 24, 28, 36, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
- 40, 40, 40, 40, 40, 16 }
-};
-const SFB_PARAM_SHORT p_FDKaacEnc_64000_short_120 = {
- 12,
- { 4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 28 }
-};
-
-const SFB_PARAM_LONG p_FDKaacEnc_88200_long_960 = {
- 40,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 12,
- 12, 12, 12, 12, 16, 16, 24, 28, 36, 44, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64 }
-};
-const SFB_PARAM_SHORT p_FDKaacEnc_88200_short_120 = {
- 12,
- { 4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 28 }
-};
-
-const SFB_PARAM_LONG p_FDKaacEnc_96000_long_960 = {
- 40,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 12,
- 12, 12, 12, 12, 16, 16, 24, 28, 36, 44, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64 }
-};
-const SFB_PARAM_SHORT p_FDKaacEnc_96000_short_120 = {
- 12,
- { 4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 28 }
-};
-
-
-static const SFB_INFO_TAB sfbInfoTab960[] = {
- { 8000, &p_FDKaacEnc_8000_long_960, &p_FDKaacEnc_8000_short_120},
- {11025, &p_FDKaacEnc_11025_long_960, &p_FDKaacEnc_11025_short_120},
- {12000, &p_FDKaacEnc_12000_long_960, &p_FDKaacEnc_12000_short_120},
- {16000, &p_FDKaacEnc_16000_long_960, &p_FDKaacEnc_16000_short_120},
- {22050, &p_FDKaacEnc_22050_long_960, &p_FDKaacEnc_22050_short_120},
- {24000, &p_FDKaacEnc_24000_long_960, &p_FDKaacEnc_24000_short_120},
- {32000, &p_FDKaacEnc_32000_long_960, &p_FDKaacEnc_32000_short_120},
- {44100, &p_FDKaacEnc_44100_long_960, &p_FDKaacEnc_44100_short_120},
- {48000, &p_FDKaacEnc_48000_long_960, &p_FDKaacEnc_48000_short_120},
- {64000, &p_FDKaacEnc_64000_long_960, &p_FDKaacEnc_64000_short_120},
- {88200, &p_FDKaacEnc_88200_long_960, &p_FDKaacEnc_88200_short_120},
- {96000, &p_FDKaacEnc_96000_long_960, &p_FDKaacEnc_96000_short_120},
-};
-
-
-/* 22050 and 24000 Hz */
-static const SFB_PARAM_LONG p_22050_long_512 = {
- 31,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 8, 8, 8, 12, 12, 12, 16, 20, 24,
- 28, 32, 32, 32, 32, 32, 32, 32, 32, 32,
- 32}
-};
-
-/* 32000 Hz */
-static const SFB_PARAM_LONG p_32000_long_512 = {
- 37,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 8, 8, 8, 8, 8, 12,
- 12, 12, 12, 16, 16, 16, 20, 24, 24, 28,
- 32, 32, 32, 32, 32, 32, 32}
-};
-
-/* 44100 Hz */
-static const SFB_PARAM_LONG p_44100_long_512 = {
- 36,
- {4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 8, 8, 8, 8, 8,
- 12, 12, 12, 12, 16, 20, 24, 28, 32, 32,
- 32, 32, 32, 32, 32, 52}
-};
-
-static const SFB_INFO_TAB sfbInfoTabLD512[] = {
- { 8000, &p_22050_long_512, NULL},
- {11025, &p_22050_long_512, NULL},
- {12000, &p_22050_long_512, NULL},
- {16000, &p_22050_long_512, NULL},
- {22050, &p_22050_long_512, NULL},
- {24000, &p_22050_long_512, NULL},
- {32000, &p_32000_long_512, NULL},
- {44100, &p_44100_long_512, NULL},
- {48000, &p_44100_long_512, NULL},
- {64000, &p_44100_long_512, NULL},
- {88200, &p_44100_long_512, NULL},
- {96000, &p_44100_long_512, NULL},
-
-};
-
-
-/* 22050 and 24000 Hz */
-static const SFB_PARAM_LONG p_22050_long_480 = {
- 30,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 8, 8, 8, 12, 12, 12, 16, 20, 24,
- 28, 32, 32, 32, 32, 32, 32, 32, 32, 32}
-};
-
-/* 32000 Hz */
-static const SFB_PARAM_LONG p_32000_long_480 = {
- 37,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 8, 8, 8, 8,
- 8, 8, 12, 12, 12, 16, 16, 20, 24, 32,
- 32, 32, 32, 32, 32, 32, 32}
-};
-
-/* 44100 Hz */
-static const SFB_PARAM_LONG p_44100_long_480 = {
- 35,
- { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 8, 8, 8, 8, 8, 12,
- 12, 12, 12, 12, 16, 16, 24, 28, 32, 32,
- 32, 32, 32, 32, 48}
-};
-
-static const SFB_INFO_TAB sfbInfoTabLD480[] = {
- { 8000, &p_22050_long_480, NULL},
- {11025, &p_22050_long_480, NULL},
- {12000, &p_22050_long_480, NULL},
- {16000, &p_22050_long_480, NULL},
- {22050, &p_22050_long_480, NULL},
- {24000, &p_22050_long_480, NULL},
- {32000, &p_32000_long_480, NULL},
- {44100, &p_44100_long_480, NULL},
- {48000, &p_44100_long_480, NULL},
- {64000, &p_44100_long_480, NULL},
- {88200, &p_44100_long_480, NULL},
- {96000, &p_44100_long_480, NULL},
-
-};
-
-/* Fixed point precision definitions */
-#define Q_BARCVAL (25)
-
-static AAC_ENCODER_ERROR FDKaacEnc_initSfbTable(LONG sampleRate, INT blockType, INT granuleLength, INT *sfbOffset, INT *sfbCnt)
-{
- INT i, specStartOffset = 0;
- const UCHAR* sfbWidth = NULL;
- const SFB_INFO_TAB *sfbInfo = NULL;
- int size;
-
- /*
- select table
- */
- switch(granuleLength) {
- case 1024:
- sfbInfo = sfbInfoTab;
- size = (INT)(sizeof(sfbInfoTab)/sizeof(SFB_INFO_TAB));
- break;
- case 960:
- sfbInfo = sfbInfoTab960;
- size = (INT)(sizeof(sfbInfoTab960)/sizeof(SFB_INFO_TAB));
- break;
- case 512:
- sfbInfo = sfbInfoTabLD512;
- size = sizeof(sfbInfoTabLD512);
- break;
- case 480:
- sfbInfo = sfbInfoTabLD480;
- size = sizeof(sfbInfoTabLD480);
- break;
- default:
- return AAC_ENC_INVALID_FRAME_LENGTH;
- }
-
- for(i = 0; i < size; i++){
- if(sfbInfo[i].sampleRate == sampleRate){
- switch(blockType){
- case LONG_WINDOW:
- case START_WINDOW:
- case STOP_WINDOW:
- sfbWidth = sfbInfo[i].paramLong->sfbWidth;
- *sfbCnt = sfbInfo[i].paramLong->sfbCnt;
- break;
- case SHORT_WINDOW:
- sfbWidth = sfbInfo[i].paramShort->sfbWidth;
- *sfbCnt = sfbInfo[i].paramShort->sfbCnt;
- granuleLength /= TRANS_FAC;
- break;
- }
- break;
- }
- }
- if (i == size) {
- return AAC_ENC_UNSUPPORTED_SAMPLINGRATE;
- }
-
- /*
- calc sfb offsets
- */
- for(i = 0; i < *sfbCnt; i++){
- sfbOffset[i] = specStartOffset;
- specStartOffset += sfbWidth[i];
- if (specStartOffset >= granuleLength) {
- i++;
- break;
- }
- }
- *sfbCnt = fixMin(i,*sfbCnt);
- sfbOffset[*sfbCnt] = fixMin(specStartOffset,granuleLength);
-
- return AAC_ENC_OK;
-}
-
-
-/*****************************************************************************
-
- functionname: FDKaacEnc_BarcLineValue
- description: Calculates barc value for one frequency line
- returns: barc value of line
- input: number of lines in transform, index of line to check, Fs
- output:
-
-*****************************************************************************/
-static FIXP_DBL FDKaacEnc_BarcLineValue(INT noOfLines, INT fftLine, LONG samplingFreq)
-{
-
- FIXP_DBL FOURBY3EM4 = (FIXP_DBL)0x45e7b273; /* 4.0/3 * 0.0001 in q43 */
- FIXP_DBL PZZZ76 = (FIXP_DBL)0x639d5e4a; /* 0.00076 in q41 */
- FIXP_DBL ONE3P3 = (FIXP_DBL)0x35333333; /* 13.3 in q26 */
- FIXP_DBL THREEP5 = (FIXP_DBL)0x1c000000; /* 3.5 in q27 */
- FIXP_DBL INV480 = (FIXP_DBL)0x44444444; // 1/480 in q39
-
- FIXP_DBL center_freq, x1, x2;
- FIXP_DBL bvalFFTLine, atan1, atan2;
-
- /* Theoritical maximum of center_freq (samp_freq*0.5) is 96khz * 0.5 = 48000 */
- /* Theoritical maximum of x1 is 1.3333333e-4f * center_freq = 6.4, can keep in q28 */
- /* Theoritical maximum of x2 is 0.00076f * center_freq = 36.48, can keep in q25 */
-
- center_freq = fftLine * samplingFreq; /* q11 or q8 */
-
- switch (noOfLines) {
- case 1024:
- center_freq = center_freq << 2; /* q13 */
- break;
- case 960:
- center_freq = fMult(center_freq, INV480) << 3;
- break;
- case 128:
- center_freq = center_freq << 5; /* q13 */
- break;
- case 120:
- center_freq = fMult(center_freq, INV480) << 6;
- break;
- case 512:
- center_freq = (fftLine * samplingFreq) << 3; // q13
- break;
- case 480:
- center_freq = fMult(center_freq, INV480) << 4; // q13
- break;
- default:
- center_freq = (FIXP_DBL)0;
- }
-
- x1 = fMult(center_freq, FOURBY3EM4); /* q13 * q43 - (DFRACT_BITS-1) = q25 */
- x2 = fMult(center_freq, PZZZ76) << 2; /* q13 * q41 - (DFRACT_BITS-1) + 2 = q25 */
-
- atan1 = fixp_atan(x1);
- atan2 = fixp_atan(x2);
-
- /* q25 (q26 * q30 - (DFRACT_BITS-1)) + q25 (q27 * q30 * q30) */
- bvalFFTLine = fMult(ONE3P3, atan2) + fMult(THREEP5, fMult(atan1, atan1));
- return(bvalFFTLine);
-
-}
-
-/*
- do not consider energies below a certain input signal level,
- i.e. of -96dB or 1 bit at 16 bit PCM resolution,
- might need to be configurable to e.g. 24 bit PCM Input or a lower
- resolution for low bit rates
-*/
-static void FDKaacEnc_InitMinPCMResolution(int numPb,
- int *pbOffset,
- FIXP_DBL *sfbPCMquantThreshold)
-{
- /* PCM_QUANT_NOISE = FDKpow(10.0f, - 20.f / 10.0f) * ABS_LOW * NORM_PCM_ENERGY * FDKpow(2,PCM_QUANT_THR_SCALE) */
- #define PCM_QUANT_NOISE ((FIXP_DBL)0x00547062)
-
- for( int i = 0; i < numPb; i++ ) {
- sfbPCMquantThreshold[i] = (pbOffset[i+1] - pbOffset[i]) * PCM_QUANT_NOISE;
- }
-}
-
-static FIXP_DBL getMaskFactor(
- const FIXP_DBL dbVal_fix,
- const INT dbVal_e,
- const FIXP_DBL ten_fix,
- const INT ten_e
- )
-{
- INT q_msk;
- FIXP_DBL mask_factor;
-
- mask_factor = fPow(ten_fix, DFRACT_BITS-1-ten_e, -dbVal_fix, DFRACT_BITS-1-dbVal_e, &q_msk);
- q_msk = fixMin(DFRACT_BITS-1,fixMax(-(DFRACT_BITS-1),q_msk));
-
- if ( (q_msk>0) && (mask_factor>(FIXP_DBL)MAXVAL_DBL>>q_msk) ) {
- mask_factor = (FIXP_DBL)MAXVAL_DBL;
- }
- else {
- mask_factor = scaleValue(mask_factor, q_msk);
- }
-
- return (mask_factor);
-}
-
-static void FDKaacEnc_initSpreading(INT numPb,
- FIXP_DBL *pbBarcValue,
- FIXP_DBL *pbMaskLoFactor,
- FIXP_DBL *pbMaskHiFactor,
- FIXP_DBL *pbMaskLoFactorSprEn,
- FIXP_DBL *pbMaskHiFactorSprEn,
- const LONG bitrate,
- const INT blockType)
-
-{
- INT i;
- FIXP_DBL MASKLOWSPREN, MASKHIGHSPREN;
-
- FIXP_DBL MASKHIGH = (FIXP_DBL)0x30000000; /* 1.5 in q29 */
- FIXP_DBL MASKLOW = (FIXP_DBL)0x60000000; /* 3.0 in q29 */
- FIXP_DBL MASKLOWSPRENLONG = (FIXP_DBL)0x60000000; /* 3.0 in q29 */
- FIXP_DBL MASKHIGHSPRENLONG = (FIXP_DBL)0x40000000; /* 2.0 in q29 */
- FIXP_DBL MASKHIGHSPRENLONGLOWBR = (FIXP_DBL)0x30000000; /* 1.5 in q29 */
- FIXP_DBL MASKLOWSPRENSHORT = (FIXP_DBL)0x40000000; /* 2.0 in q29 */
- FIXP_DBL MASKHIGHSPRENSHORT = (FIXP_DBL)0x30000000; /* 1.5 in q29 */
- FIXP_DBL TEN = (FIXP_DBL)0x50000000; /* 10.0 in q27 */
-
- if (blockType != SHORT_WINDOW)
- {
- MASKLOWSPREN = MASKLOWSPRENLONG;
- MASKHIGHSPREN = (bitrate>20000)?MASKHIGHSPRENLONG:MASKHIGHSPRENLONGLOWBR;
- }
- else
- {
- MASKLOWSPREN = MASKLOWSPRENSHORT;
- MASKHIGHSPREN = MASKHIGHSPRENSHORT;
- }
-
- for(i=0; i<numPb; i++)
- {
- if (i > 0)
- {
- pbMaskHiFactor[i] = getMaskFactor(
- fMult(MASKHIGH, (pbBarcValue[i] - pbBarcValue[i-1])), 23,
- TEN, 27);
-
- pbMaskLoFactor[i-1] = getMaskFactor(
- fMult(MASKLOW, (pbBarcValue[i] - pbBarcValue[i-1])), 23,
- TEN, 27);
-
- pbMaskHiFactorSprEn[i] = getMaskFactor(
- fMult(MASKHIGHSPREN, (pbBarcValue[i] - pbBarcValue[i-1])), 23,
- TEN, 27);
-
- pbMaskLoFactorSprEn[i-1] = getMaskFactor(
- fMult(MASKLOWSPREN, (pbBarcValue[i] - pbBarcValue[i-1])), 23,
- TEN, 27);
- }
- else
- {
- pbMaskHiFactor[i] = (FIXP_DBL)0;
- pbMaskLoFactor[numPb-1] = (FIXP_DBL)0;
- pbMaskHiFactorSprEn[i] = (FIXP_DBL)0;
- pbMaskLoFactorSprEn[numPb-1] = (FIXP_DBL)0;
- }
- }
-}
-
-static void FDKaacEnc_initBarcValues(INT numPb,
- INT *pbOffset,
- INT numLines,
- INT samplingFrequency,
- FIXP_DBL *pbBval)
-{
- INT i;
- FIXP_DBL MAX_BARC = (FIXP_DBL)0x30000000; /* 24.0 in q25 */
-
- for(i=0; i<numPb; i++)
- {
- FIXP_DBL v1, v2, cur_bark;
- v1 = FDKaacEnc_BarcLineValue(numLines, pbOffset[i], samplingFrequency);
- v2 = FDKaacEnc_BarcLineValue(numLines, pbOffset[i+1], samplingFrequency);
- cur_bark = (v1 >> 1) + (v2 >> 1);
- pbBval[i] = fixMin(cur_bark, MAX_BARC);
- }
-}
-
-static void FDKaacEnc_initMinSnr(const LONG bitrate,
- const LONG samplerate,
- const INT numLines,
- const INT *sfbOffset,
- const INT sfbActive,
- const INT blockType,
- FIXP_DBL *sfbMinSnrLdData)
-{
- INT sfb;
-
- /* Fix conversion variables */
- INT qbfac, qperwin, qdiv, qpeprt_const, qpeprt;
- INT qtmp, qsnr, sfbWidth;
-
- FIXP_DBL MAX_BARC = (FIXP_DBL)0x30000000; /* 24.0 in q25 */
- FIXP_DBL MAX_BARCP1 = (FIXP_DBL)0x32000000; /* 25.0 in q25 */
- FIXP_DBL BITS2PEFAC = (FIXP_DBL)0x4b851eb8; /* 1.18 in q30 */
- FIXP_DBL PERS2P4 = (FIXP_DBL)0x624dd2f2; /* 0.024 in q36 */
- FIXP_DBL ONEP5 = (FIXP_DBL)0x60000000; /* 1.5 in q30 */
- FIXP_DBL MAX_SNR = (FIXP_DBL)0x33333333; /* 0.8 in q30 */
- FIXP_DBL MIN_SNR = (FIXP_DBL)0x003126e9; /* 0.003 in q30 */
-
- FIXP_DBL barcFactor, pePerWindow, pePart, barcWidth;
- FIXP_DBL pePart_const, tmp, snr, one_qsnr, one_point5;
-
- /* relative number of active barks */
- barcFactor = fDivNorm(fixMin(FDKaacEnc_BarcLineValue(numLines, sfbOffset[sfbActive], samplerate), MAX_BARC),
- MAX_BARCP1, &qbfac);
-
- qbfac = DFRACT_BITS-1-qbfac;
-
- pePerWindow = fDivNorm(bitrate, samplerate, &qperwin);
- qperwin = DFRACT_BITS-1-qperwin;
- pePerWindow = fMult(pePerWindow, BITS2PEFAC); qperwin = qperwin + 30 - (DFRACT_BITS-1);
- pePerWindow = fMult(pePerWindow, PERS2P4); qperwin = qperwin + 36 - (DFRACT_BITS-1);
-
- switch (numLines) {
- case 1024:
- qperwin = qperwin - 10;
- break;
- case 128:
- qperwin = qperwin - 7;
- break;
- case 512:
- qperwin = qperwin - 9;
- break;
- case 480:
- qperwin = qperwin - 9;
- pePerWindow = fMult(pePerWindow, FL2FXCONST_DBL(480.f/512.f));
- break;
- case 960:
- pePerWindow = fMult(pePerWindow, FL2FXCONST_DBL(960.f/1024.f));
- qperwin = qperwin - 10;
- break;
- case 120:
- pePerWindow = fMult(pePerWindow, FL2FXCONST_DBL(120.f/128.f));
- qperwin = qperwin - 7;
- break;
- }
-
- /* for short blocks it is assumed that more bits are available */
- if (blockType == SHORT_WINDOW)
- {
- pePerWindow = fMult(pePerWindow, ONEP5);
- qperwin = qperwin + 30 - (DFRACT_BITS-1);
- }
- pePart_const = fDivNorm(pePerWindow, barcFactor, &qdiv); qpeprt_const = qperwin - qbfac + DFRACT_BITS-1-qdiv;
-
- for (sfb = 0; sfb < sfbActive; sfb++)
- {
- barcWidth = FDKaacEnc_BarcLineValue(numLines, sfbOffset[sfb+1], samplerate) -
- FDKaacEnc_BarcLineValue(numLines, sfbOffset[sfb], samplerate);
-
- /* adapt to sfb bands */
- pePart = fMult(pePart_const, barcWidth); qpeprt = qpeprt_const + 25 - (DFRACT_BITS-1);
-
- /* pe -> snr calculation */
- sfbWidth = (sfbOffset[sfb+1] - sfbOffset[sfb]);
- pePart = fDivNorm(pePart, sfbWidth, &qdiv); qpeprt += DFRACT_BITS-1-qdiv;
-
- tmp = f2Pow(pePart, DFRACT_BITS-1-qpeprt, &qtmp);
- qtmp = DFRACT_BITS-1-qtmp;
-
- /* Subtract 1.5 */
- qsnr = fixMin(qtmp, 30);
- tmp = tmp >> (qtmp - qsnr);
-
- if((30+1-qsnr) > (DFRACT_BITS-1))
- one_point5 = (FIXP_DBL)0;
- else
- one_point5 = (FIXP_DBL)(ONEP5 >> (30+1-qsnr));
-
- snr = (tmp>>1) - (one_point5); qsnr -= 1;
-
- /* max(snr, 1.0) */
- if(qsnr > 0)
- one_qsnr = (FIXP_DBL)(1 << qsnr);
- else
- one_qsnr = (FIXP_DBL)0;
-
- snr = fixMax(one_qsnr, snr);
-
- /* 1/snr */
- snr = fDivNorm(one_qsnr, snr, &qsnr);
- qsnr = DFRACT_BITS-1-qsnr;
- snr = (qsnr > 30)? (snr>>(qsnr-30)):snr;
-
- /* upper limit is -1 dB */
- snr = (snr > MAX_SNR) ? MAX_SNR : snr;
-
- /* lower limit is -25 dB */
- snr = (snr < MIN_SNR) ? MIN_SNR : snr;
- snr = snr << 1;
-
- sfbMinSnrLdData[sfb] = CalcLdData(snr);
- }
-}
-
-AAC_ENCODER_ERROR FDKaacEnc_InitPsyConfiguration(INT bitrate,
- INT samplerate,
- INT bandwidth,
- INT blocktype,
- INT granuleLength,
- INT useIS,
- PSY_CONFIGURATION *psyConf,
- FB_TYPE filterbank)
-{
- AAC_ENCODER_ERROR ErrorStatus;
- INT sfb;
- FIXP_DBL sfbBarcVal[MAX_SFB];
- const INT frameLengthLong = granuleLength;
- const INT frameLengthShort = granuleLength/TRANS_FAC;
-
- FDKmemclear(psyConf, sizeof(PSY_CONFIGURATION));
- psyConf->granuleLength = granuleLength;
- psyConf->filterbank = filterbank;
-
- psyConf->allowIS = (useIS) && ( (bitrate/bandwidth) < 5 );
-
- /* init sfb table */
- ErrorStatus = FDKaacEnc_initSfbTable(samplerate,blocktype,granuleLength,psyConf->sfbOffset,&psyConf->sfbCnt);
- if (ErrorStatus != AAC_ENC_OK)
- return ErrorStatus;
-
- /* calculate barc values for each pb */
- FDKaacEnc_initBarcValues(psyConf->sfbCnt,
- psyConf->sfbOffset,
- psyConf->sfbOffset[psyConf->sfbCnt],
- samplerate,
- sfbBarcVal);
-
- FDKaacEnc_InitMinPCMResolution(psyConf->sfbCnt,
- psyConf->sfbOffset,
- psyConf->sfbPcmQuantThreshold);
-
- /* calculate spreading function */
- FDKaacEnc_initSpreading(psyConf->sfbCnt,
- sfbBarcVal,
- psyConf->sfbMaskLowFactor,
- psyConf->sfbMaskHighFactor,
- psyConf->sfbMaskLowFactorSprEn,
- psyConf->sfbMaskHighFactorSprEn,
- bitrate,
- blocktype);
-
- /* init ratio */
-
- psyConf->maxAllowedIncreaseFactor = 2; /* integer */
- psyConf->minRemainingThresholdFactor = (FIXP_SGL)0x0148; /* FL2FXCONST_SGL(0.01f); */ /* fract */
-
- psyConf->clipEnergy = (FIXP_DBL)0x773593ff; /* FL2FXCONST_DBL(1.0e9*NORM_PCM_ENERGY); */
-
- if (blocktype!=SHORT_WINDOW) {
- psyConf->lowpassLine = (INT)((2*bandwidth*frameLengthLong)/samplerate);
- psyConf->lowpassLineLFE = LFE_LOWPASS_LINE;
- }
- else {
- psyConf->lowpassLine = (INT)((2*bandwidth*frameLengthShort)/samplerate);
- psyConf->lowpassLineLFE = 0; /* LFE only in lonf blocks */
- /* psyConf->clipEnergy /= (TRANS_FAC * TRANS_FAC); */
- psyConf->clipEnergy >>= 6;
- }
-
- for (sfb = 0; sfb < psyConf->sfbCnt; sfb++){
- if (psyConf->sfbOffset[sfb] >= psyConf->lowpassLine)
- break;
- }
- psyConf->sfbActive = sfb;
-
- for (sfb = 0; sfb < psyConf->sfbCnt; sfb++){
- if (psyConf->sfbOffset[sfb] >= psyConf->lowpassLineLFE)
- break;
- }
- psyConf->sfbActiveLFE = sfb;
-
- /* calculate minSnr */
- FDKaacEnc_initMinSnr(bitrate,
- samplerate,
- psyConf->sfbOffset[psyConf->sfbCnt],
- psyConf->sfbOffset,
- psyConf->sfbActive,
- blocktype,
- psyConf->sfbMinSnrLdData);
-
- return AAC_ENC_OK;
-}
-