From 6cfabd35363c3ef5e3b209b867169a500b3ccc3c Mon Sep 17 00:00:00 2001 From: Fraunhofer IIS FDK Date: Mon, 26 Feb 2018 20:17:00 +0100 Subject: Upgrade to FDKv2 Bug: 71430241 Test: CTS DecoderTest and DecoderTestAacDrc original-Change-Id: Iaa20f749b8a04d553b20247cfe1a8930ebbabe30 Apply clang-format also on header files. original-Change-Id: I14de1ef16bbc79ec0283e745f98356a10efeb2e4 Fixes for MPEG-D DRC original-Change-Id: If1de2d74bbbac84b3f67de3b88b83f6a23b8a15c Catch unsupported tw_mdct at an early stage original-Change-Id: Ied9dd00d754162a0e3ca1ae3e6b854315d818afe Fixing PVC transition frames original-Change-Id: Ib75725abe39252806c32d71176308f2c03547a4e Move qmf bands sanity check original-Change-Id: Iab540c3013c174d9490d2ae100a4576f51d8dbc4 Initialize scaling variable original-Change-Id: I3c4087101b70e998c71c1689b122b0d7762e0f9e Add 16 qmf band configuration to getSlotNrgHQ() original-Change-Id: I49a5d30f703a1b126ff163df9656db2540df21f1 Always apply byte alignment at the end of the AudioMuxElement original-Change-Id: I42d560287506d65d4c3de8bfe3eb9a4ebeb4efc7 Setup SBR element only if no parse error exists original-Change-Id: I1915b73704bc80ab882b9173d6bec59cbd073676 Additional array index check in HCR original-Change-Id: I18cc6e501ea683b5009f1bbee26de8ddd04d8267 Fix fade-in index selection in concealment module original-Change-Id: Ibf802ed6ed8c05e9257e1f3b6d0ac1162e9b81c1 Enable explicit backward compatible parser for AAC_LD original-Change-Id: I27e9c678dcb5d40ed760a6d1e06609563d02482d Skip spatial specific config in explicit backward compatible ASC original-Change-Id: Iff7cc365561319e886090cedf30533f562ea4d6e Update flags description in decoder API original-Change-Id: I9a5b4f8da76bb652f5580cbd3ba9760425c43830 Add QMF domain reset function original-Change-Id: I4f89a8a2c0277d18103380134e4ed86996e9d8d6 DRC upgrade v2.1.0 original-Change-Id: I5731c0540139dab220094cd978ef42099fc45b74 Fix integer overflow in sqrtFixp_lookup() original-Change-Id: I429a6f0d19aa2cc957e0f181066f0ca73968c914 Fix integer overflow in invSqrtNorm2() original-Change-Id: I84de5cbf9fb3adeb611db203fe492fabf4eb6155 Fix integer overflow in GenerateRandomVector() original-Change-Id: I3118a641008bd9484d479e5b0b1ee2b5d7d44d74 Fix integer overflow in adjustTimeSlot_EldGrid() original-Change-Id: I29d503c247c5c8282349b79df940416a512fb9d5 Fix integer overflow in FDKsbrEnc_codeEnvelope() original-Change-Id: I6b34b61ebb9d525b0c651ed08de2befc1f801449 Follow-up on: Fix integer overflow in adjustTimeSlot_EldGrid() original-Change-Id: I6f8f578cc7089e5eb7c7b93e580b72ca35ad689a Fix integer overflow in get_pk_v2() original-Change-Id: I63375bed40d45867f6eeaa72b20b1f33e815938c Fix integer overflow in Syn_filt_zero() original-Change-Id: Ie0c02fdfbe03988f9d3b20d10cd9fe4c002d1279 Fix integer overflow in CFac_CalcFacSignal() original-Change-Id: Id2d767c40066c591b51768e978eb8af3b803f0c5 Fix integer overflow in FDKaacEnc_FDKaacEnc_calcPeNoAH() original-Change-Id: Idcbd0f4a51ae2550ed106aa6f3d678d1f9724841 Fix integer overflow in sbrDecoder_calculateGainVec() original-Change-Id: I7081bcbe29c5cede9821b38d93de07c7add2d507 Fix integer overflow in CLpc_SynthesisLattice() original-Change-Id: I4a95ddc18de150102352d4a1845f06094764c881 Fix integer overflow in Pred_Lt4() original-Change-Id: I4dbd012b2de7d07c3e70a47b92e3bfae8dbc750a Fix integer overflow in FDKsbrEnc_InitSbrFastTransientDetector() original-Change-Id: I788cbec1a4a00f44c2f3a72ad7a4afa219807d04 Fix unsigned integer overflow in FDKaacEnc_WriteBitstream() original-Change-Id: I68fc75166e7d2cd5cd45b18dbe3d8c2a92f1822a Fix unsigned integer overflow in FDK_MetadataEnc_Init() original-Change-Id: Ie8d025f9bcdb2442c704bd196e61065c03c10af4 Fix overflow in pseudo random number generators original-Change-Id: I3e2551ee01356297ca14e3788436ede80bd5513c Fix unsigned integer overflow in sbrDecoder_Parse() original-Change-Id: I3f231b2f437e9c37db4d5b964164686710eee971 Fix unsigned integer overflow in longsub() original-Change-Id: I73c2bc50415cac26f1f5a29e125bbe75f9180a6e Fix unsigned integer overflow in CAacDecoder_DecodeFrame() original-Change-Id: Ifce2db4b1454b46fa5f887e9d383f1cc43b291e4 Fix overflow at CLpdChannelStream_Read() original-Change-Id: Idb9d822ce3a4272e4794b643644f5434e2d4bf3f Fix unsigned integer overflow in Hcr_State_BODY_SIGN_ESC__ESC_WORD() original-Change-Id: I1ccf77c0015684b85534c5eb97162740a870b71c Fix unsigned integer overflow in UsacConfig_Parse() original-Change-Id: Ie6d27f84b6ae7eef092ecbff4447941c77864d9f Fix unsigned integer overflow in aacDecoder_drcParse() original-Change-Id: I713f28e883eea3d70b6fa56a7b8f8c22bcf66ca0 Fix unsigned integer overflow in aacDecoder_drcReadCompression() original-Change-Id: Ia34dfeb88c4705c558bce34314f584965cafcf7a Fix unsigned integer overflow in CDataStreamElement_Read() original-Change-Id: Iae896cc1d11f0a893d21be6aa90bd3e60a2c25f0 Fix unsigned integer overflow in transportDec_AdjustEndOfAccessUnit() original-Change-Id: I64cf29a153ee784bb4a16fdc088baabebc0007dc Fix unsigned integer overflow in transportDec_GetAuBitsRemaining() original-Change-Id: I975b3420faa9c16a041874ba0db82e92035962e4 Fix unsigned integer overflow in extractExtendedData() original-Change-Id: I2a59eb09e2053cfb58dfb75fcecfad6b85a80a8f Fix signed integer overflow in CAacDecoder_ExtPayloadParse() original-Change-Id: I4ad5ca4e3b83b5d964f1c2f8c5e7b17c477c7929 Fix unsigned integer overflow in CAacDecoder_DecodeFrame() original-Change-Id: I29a39df77d45c52a0c9c5c83c1ba81f8d0f25090 Follow-up on: Fix integer overflow in CLpc_SynthesisLattice() original-Change-Id: I8fb194ffc073a3432a380845be71036a272d388f Fix signed integer overflow in _interpolateDrcGain() original-Change-Id: I879ec9ab14005069a7c47faf80e8bc6e03d22e60 Fix unsigned integer overflow in FDKreadBits() original-Change-Id: I1f47a6a8037ff70375aa8844947d5681bb4287ad Fix unsigned integer overflow in FDKbyteAlign() original-Change-Id: Id5f3a11a0c9e50fc6f76ed6c572dbd4e9f2af766 Fix unsigned integer overflow in FDK_get32() original-Change-Id: I9d33b8e97e3d38cbb80629cb859266ca0acdce96 Fix unsigned integer overflow in FDK_pushBack() original-Change-Id: Ic87f899bc8c6acf7a377a8ca7f3ba74c3a1e1c19 Fix unsigned integer overflow in FDK_pushForward() original-Change-Id: I3b754382f6776a34be1602e66694ede8e0b8effc Fix unsigned integer overflow in ReadPsData() original-Change-Id: I25361664ba8139e32bbbef2ca8c106a606ce9c37 Fix signed integer overflow in E_UTIL_residu() original-Change-Id: I8c3abd1f437ee869caa8fb5903ce7d3d641b6aad REVERT: Follow-up on: Integer overflow in CLpc_SynthesisLattice(). original-Change-Id: I3d340099acb0414795c8dfbe6362bc0a8f045f9b Follow-up on: Fix integer overflow in CLpc_SynthesisLattice() original-Change-Id: I4aedb8b3a187064e9f4d985175aa55bb99cc7590 Follow-up on: Fix unsigned integer overflow in aacDecoder_drcParse() original-Change-Id: I2aa2e13916213bf52a67e8b0518e7bf7e57fb37d Fix integer overflow in acelp original-Change-Id: Ie6390c136d84055f8b728aefbe4ebef6e029dc77 Fix unsigned integer overflow in aacDecoder_UpdateBitStreamCounters() original-Change-Id: I391ffd97ddb0b2c184cba76139bfb356a3b4d2e2 Adjust concealment default settings original-Change-Id: I6a95db935a327c47df348030bcceafcb29f54b21 Saturate estimatedStartPos original-Change-Id: I27be2085e0ae83ec9501409f65e003f6bcba1ab6 Negative shift exponent in _interpolateDrcGain() original-Change-Id: I18edb26b26d002aafd5e633d4914960f7a359c29 Negative shift exponent in calculateICC() original-Change-Id: I3dcd2ae98d2eb70ee0d59750863cbb2a6f4f8aba Too large shift exponent in FDK_put() original-Change-Id: Ib7d9aaa434d2d8de4a13b720ca0464b31ca9b671 Too large shift exponent in CalcInvLdData() original-Change-Id: I43e6e78d4cd12daeb1dcd5d82d1798bdc2550262 Member access within null pointer of type SBR_CHANNEL original-Change-Id: Idc5e4ea8997810376d2f36bbdf628923b135b097 Member access within null pointer of type CpePersistentData original-Change-Id: Ib6c91cb0d37882768e5baf63324e429589de0d9d Member access within null pointer FDKaacEnc_psyMain() original-Change-Id: I7729b7f4479970531d9dc823abff63ca52e01997 Member access within null pointer FDKaacEnc_GetPnsParam() original-Change-Id: I9aa3b9f3456ae2e0f7483dbd5b3dde95fc62da39 Member access within null pointer FDKsbrEnc_EnvEncodeFrame() original-Change-Id: I67936f90ea714e90b3e81bc0dd1472cc713eb23a Add HCR sanity check original-Change-Id: I6c1d9732ebcf6af12f50b7641400752f74be39f7 Fix memory issue for HBE edge case with 8:3 SBR original-Change-Id: I11ea58a61e69fbe8bf75034b640baee3011e63e9 Additional SBR parametrization sanity check for ELD original-Change-Id: Ie26026fbfe174c2c7b3691f6218b5ce63e322140 Add MPEG-D DRC channel layout check original-Change-Id: Iea70a74f171b227cce636a9eac4ba662777a2f72 Additional out-of-bounds checks in MPEG-D DRC original-Change-Id: Ife4a8c3452c6fde8a0a09e941154a39a769777d4 Change-Id: Ic63cb2f628720f54fe9b572b0cb528e2599c624e --- libSBRdec/src/psdec_hybrid.cpp | 652 ----------------------------------------- 1 file changed, 652 deletions(-) delete mode 100644 libSBRdec/src/psdec_hybrid.cpp (limited to 'libSBRdec/src/psdec_hybrid.cpp') diff --git a/libSBRdec/src/psdec_hybrid.cpp b/libSBRdec/src/psdec_hybrid.cpp deleted file mode 100644 index cbd0e92..0000000 --- a/libSBRdec/src/psdec_hybrid.cpp +++ /dev/null @@ -1,652 +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 ------------------------------------------------------------------------------------------------------------ */ - -#include "psdec_hybrid.h" - - -#include "fft.h" -#include "sbr_ram.h" - -#include "FDK_tools_rom.h" -#include "sbr_rom.h" - -/******************************************************************************* - Functionname: InitHybridFilterBank - ******************************************************************************* - - Description: Init one instance of HANDLE_HYBRID stuct - - Arguments: - - Return: none - -*******************************************************************************/ - - -SBR_ERROR -InitHybridFilterBank ( HANDLE_HYBRID hs, /*!< Handle to HYBRID struct. */ - SCHAR frameSize, /*!< Framesize (in Qmf súbband samples). */ - SCHAR noBands, /*!< Number of Qmf bands for hybrid filtering. */ - const UCHAR *pResolution ) /*!< Resolution in Qmf bands (length noBands). */ -{ - SCHAR i; - UCHAR maxNoChannels = 0; - - for (i = 0; i < noBands; i++) { - hs->pResolution[i] = pResolution[i]; - if(pResolution[i] > maxNoChannels) - maxNoChannels = pResolution[i]; - } - - hs->nQmfBands = noBands; - hs->frameSize = frameSize; - hs->qmfBufferMove = HYBRID_FILTER_LENGTH - 1; - - hs->sf_mQmfBuffer = 0; - - return SBRDEC_OK; -} - -/******************************************************************************* - Functionname: dualChannelFiltering - ******************************************************************************* - - Description: fast 2-channel real-valued filtering with 6-tap delay. - - Arguments: - - Return: none - -*******************************************************************************/ - -/*! -2 channel filter -
-   Filter Coefs:
-   0.0,
-   0.01899487526049,
-   0.0,
-   -0.07293139167538,
-   0.0,
-   0.30596630545168,
-   0.5,
-   0.30596630545168,
-   0.0,
-   -0.07293139167538,
-   0.0,
-   0.01899487526049,
-   0.0
-
-
-   Filter design:
-   h[q,n] = g[n] * cos(2pi/2 * q * (n-6) );  n = 0..12,  q = 0,1;
-
-   ->  h[0,n] = g[n] * 1;
-   ->  h[1,n] = g[n] * pow(-1,n);
-
-*/ - -static void slotBasedDualChannelFiltering( const FIXP_DBL *pQmfReal, - const FIXP_DBL *pQmfImag, - - FIXP_DBL *mHybridReal, - FIXP_DBL *mHybridImag) -{ - - FIXP_DBL t1, t3, t5, t6; - - /* symmetric filter coefficients */ - - /* you don't have to shift the result after fMult because of p2_13_20 <= 0.5 */ - t1 = fMultDiv2(p2_13_20[1] , ( (pQmfReal[1] >> 1) + (pQmfReal[11] >> 1))); - t3 = fMultDiv2(p2_13_20[3] , ( (pQmfReal[3] >> 1) + (pQmfReal[ 9] >> 1))); - t5 = fMultDiv2(p2_13_20[5] , ( (pQmfReal[5] >> 1) + (pQmfReal[ 7] >> 1))); - t6 = fMultDiv2(p2_13_20[6] , (pQmfReal[6] >> 1) ); - - mHybridReal[0] = (t1 + t3 + t5 + t6) << 2; - mHybridReal[1] = (- t1 - t3 - t5 + t6) << 2; - - t1 = fMultDiv2(p2_13_20[1] , ( (pQmfImag[1] >> 1) + (pQmfImag[11] >> 1))); - t3 = fMultDiv2(p2_13_20[3] , ( (pQmfImag[3] >> 1) + (pQmfImag[ 9] >> 1))); - t5 = fMultDiv2(p2_13_20[5] , ( (pQmfImag[5] >> 1) + (pQmfImag[ 7] >> 1))); - t6 = fMultDiv2(p2_13_20[6] , pQmfImag[6] >> 1 ); - - mHybridImag[0] = (t1 + t3 + t5 + t6) << 2; - mHybridImag[1] = (- t1 - t3 - t5 + t6) << 2; -} - - -/******************************************************************************* - Functionname: eightChannelFiltering - ******************************************************************************* - - Description: fast 8-channel complex-valued filtering with 6-tap delay. - - Arguments: - - Return: none - -*******************************************************************************/ -/*! - 8 channel filter - - Implementation using a FFT of length 8 -
-   prototype filter coefficients:
-   0.00746082949812   0.02270420949825   0.04546865930473   0.07266113929591   0.09885108575264   0.11793710567217
-   0.125
-   0.11793710567217   0.09885108575264   0.07266113929591   0.04546865930473   0.02270420949825   0.00746082949812
-
-   Filter design:
-   N = 13; Q = 8;
-   h[q,n]       = g[n] * exp(j * 2 * pi / Q * (q + .5) * (n - 6));  n = 0..(N-1),  q = 0..(Q-1);
-
-   Time Signal:   x[t];
-   Filter Bank Output
-   y[q,t] = conv(x[t],h[q,t]) = conv(h[q,t],x[t]) = sum(x[k] * h[q, t - k] ) = sum(h[q, k] * x[t - k] ); k = 0..(N-1);
-
-   y[q,t] =   x[t - 12]*h[q, 12]  +  x[t - 11]*h[q, 11]  +  x[t - 10]*h[q, 10]  +  x[t -  9]*h[q,  9]
-           +  x[t -  8]*h[q,  8]  +  x[t -  7]*h[q,  7]
-           +  x[t -  6]*h[q,  6]
-           +  x[t -  5]*h[q,  5]  +  x[t -  4]*h[q,  4]
-           +  x[t -  3]*h[q,  3]  +  x[t -  2]*h[q,  2]  +  x[t -  1]*h[q,  1]  +  x[t -  0]*h[q,  0];
-
-   h'[q, n] = h[q,(N-1)-n] = g[n] * exp(j * 2 * pi / Q * (q + .5) * (6 - n));  n = 0..(N-1),  q = 0..(Q-1);
-
-   y[q,t] =   x[t - 12]*h'[q,  0]  +  x[t - 11]*h'[q,  1]  +  x[t - 10]*h'[q,  2]  +  x[t -  9]*h'[q,  3]
-           +  x[t -  8]*h'[q,  4]  +  x[t -  7]*h'[q,  5]
-           +  x[t -  6]*h'[q,  6]
-           +  x[t -  5]*h'[q,  7]  +  x[t -  4]*h'[q,  8]
-           +  x[t -  3]*h'[q,  9]  +  x[t -  2]*h'[q, 10]  +  x[t -  1]*h'[q, 11]  +  x[t -  0]*h'[q, 12];
-
-   Try to split off FFT Modulation Term:
-   FFT(x[t], q) = sum(x[t+k]*exp(-j*2*pi/N *q * k))
-                                           c                                           m
-   Step 1:  h'[q,n] = g[n] * ( exp(j * 2 * pi / 8 * .5 * (6 - n)) ) * ( exp (j * 2 * pi / 8 * q * (6 - n)) );
-
-    h'[q,n] = g[n] *c[n] * m[q,n]; (see above)
-    c[n]    = exp( j * 2 * pi / 8 * .5 * (6 - n) );
-    m[q,n]  = exp( j * 2 * pi / 8 *  q * (6 - n) );
-
-    y[q,t] = x[t -  0]*g[0]*c[0]*m[q,0]  +  x[t -  1]*g[1]*c[ 1]*m[q, 1]  + ...
-             ...                         +  x[t - 12]*g[2]*c[12]*m[q,12];
-
-                                                                              |
-    n                   m                            *exp(-j*2*pi)            |   n'                   fft
--------------------------------------------------------------------------------------------------------------------------
-    0       exp( j * 2 * pi / 8 * q * 6) ->  exp(-j * 2 * pi / 8 * q * 2)     |   2         exp(-j * 2 * pi / 8 * q * 0)
-    1       exp( j * 2 * pi / 8 * q * 5) ->  exp(-j * 2 * pi / 8 * q * 3)     |   3         exp(-j * 2 * pi / 8 * q * 1)
-    2       exp( j * 2 * pi / 8 * q * 4) ->  exp(-j * 2 * pi / 8 * q * 4)     |   4         exp(-j * 2 * pi / 8 * q * 2)
-    3       exp( j * 2 * pi / 8 * q * 3) ->  exp(-j * 2 * pi / 8 * q * 5)     |   5         exp(-j * 2 * pi / 8 * q * 3)
-    4       exp( j * 2 * pi / 8 * q * 2) ->  exp(-j * 2 * pi / 8 * q * 6)     |   6         exp(-j * 2 * pi / 8 * q * 4)
-    5       exp( j * 2 * pi / 8 * q * 1) ->  exp(-j * 2 * pi / 8 * q * 7)     |   7         exp(-j * 2 * pi / 8 * q * 5)
-    6       exp( j * 2 * pi / 8 * q * 0)                                      |   0         exp(-j * 2 * pi / 8 * q * 6)
-    7       exp(-j * 2 * pi / 8 * q * 1)                                      |   1         exp(-j * 2 * pi / 8 * q * 7)
-    8       exp(-j * 2 * pi / 8 * q * 2)                                      |   2
-    9       exp(-j * 2 * pi / 8 * q * 3)                                      |   3
-    10      exp(-j * 2 * pi / 8 * q * 4)                                      |   4
-    11      exp(-j * 2 * pi / 8 * q * 5)                                      |   5
-    12      exp(-j * 2 * pi / 8 * q * 6)                                      |   6
-
-
-    now use fft modulation coefficients
-    m[6]  =       = fft[0]
-    m[7]  =       = fft[1]
-    m[8]  = m[ 0] = fft[2]
-    m[9]  = m[ 1] = fft[3]
-    m[10] = m[ 2] = fft[4]
-    m[11] = m[ 3] = fft[5]
-    m[12] = m[ 4] = fft[6]
-            m[ 5] = fft[7]
-
-    y[q,t] = (                       x[t- 6]*g[ 6]*c[ 6] ) * fft[q,0]  +
-             (                       x[t- 7]*g[ 7]*c[ 7] ) * fft[q,1]  +
-             ( x[t- 0]*g[ 0]*c[ 0] + x[t- 8]*g[ 8]*c[ 8] ) * fft[q,2]  +
-             ( x[t- 1]*g[ 1]*c[ 1] + x[t- 9]*g[ 9]*c[ 9] ) * fft[q,3]  +
-             ( x[t- 2]*g[ 2]*c[ 2] + x[t-10]*g[10]*c[10] ) * fft[q,4]  +
-             ( x[t- 3]*g[ 3]*c[ 3] + x[t-11]*g[11]*c[11] ) * fft[q,5]  +
-             ( x[t- 4]*g[ 4]*c[ 4] + x[t-12]*g[12]*c[12] ) * fft[q,6]  +
-             ( x[t- 5]*g[ 5]*c[ 5]                       ) * fft[q,7];
-
-    pre twiddle factors c[n] = exp(j * 2 * pi / 8 * .5 * (6 - n));
-    n                c]           |  n                c[n]         |  n                c[n]
----------------------------------------------------------------------------------------------------
-    0       exp( j * 6 * pi / 8)  |  1       exp( j * 5 * pi / 8)  |  2       exp( j * 4 * pi / 8)
-    3       exp( j * 3 * pi / 8)  |  4       exp( j * 2 * pi / 8)  |  5       exp( j * 1 * pi / 8)
-    6       exp( j * 0 * pi / 8)  |  7       exp(-j * 1 * pi / 8)  |  8       exp(-j * 2 * pi / 8)
-    9       exp(-j * 3 * pi / 8)  | 10       exp(-j * 4 * pi / 8)  | 11       exp(-j * 5 * pi / 8)
-   12       exp(-j * 6 * pi / 8)  |                                |
-
-*/ - -/* defining rotation factors for *ChannelFiltering */ - -#define cos0Pi FL2FXCONST_DBL( 1.f) -#define sin0Pi FL2FXCONST_DBL( 0.f) - -#define cos1Pi FL2FXCONST_DBL(-1.f) -#define sin1Pi FL2FXCONST_DBL( 0.f) - -#define cos1Pi_2 FL2FXCONST_DBL( 0.f) -#define sin1Pi_2 FL2FXCONST_DBL( 1.f) - -#define cos1Pi_3 FL2FXCONST_DBL( 0.5f) -#define sin1Pi_3 FL2FXCONST_DBL( 0.86602540378444f) - -#define cos0Pi_4 cos0Pi -#define cos1Pi_4 FL2FXCONST_DBL(0.70710678118655f) -#define cos2Pi_4 cos1Pi_2 -#define cos3Pi_4 (-cos1Pi_4) -#define cos4Pi_4 (-cos0Pi_4) -#define cos5Pi_4 cos3Pi_4 -#define cos6Pi_4 cos2Pi_4 - -#define sin0Pi_4 sin0Pi -#define sin1Pi_4 FL2FXCONST_DBL(0.70710678118655f) -#define sin2Pi_4 sin1Pi_2 -#define sin3Pi_4 sin1Pi_4 -#define sin4Pi_4 sin0Pi_4 -#define sin5Pi_4 (-sin3Pi_4) -#define sin6Pi_4 (-sin2Pi_4) - -#define cos0Pi_8 cos0Pi -#define cos1Pi_8 FL2FXCONST_DBL(0.92387953251129f) -#define cos2Pi_8 cos1Pi_4 -#define cos3Pi_8 FL2FXCONST_DBL(0.38268343236509f) -#define cos4Pi_8 cos2Pi_4 -#define cos5Pi_8 (-cos3Pi_8) -#define cos6Pi_8 (-cos2Pi_8) - -#define sin0Pi_8 sin0Pi -#define sin1Pi_8 cos3Pi_8 -#define sin2Pi_8 sin1Pi_4 -#define sin3Pi_8 cos1Pi_8 -#define sin4Pi_8 sin2Pi_4 -#define sin5Pi_8 sin3Pi_8 -#define sin6Pi_8 sin1Pi_4 - -#if defined(ARCH_PREFER_MULT_32x16) - #define FIXP_HYB FIXP_SGL - #define FIXP_CAST FX_DBL2FX_SGL -#else - #define FIXP_HYB FIXP_DBL - #define FIXP_CAST -#endif - -static const FIXP_HYB cr[13] = -{ - FIXP_CAST(cos6Pi_8), FIXP_CAST(cos5Pi_8), FIXP_CAST(cos4Pi_8), - FIXP_CAST(cos3Pi_8), FIXP_CAST(cos2Pi_8), FIXP_CAST(cos1Pi_8), - FIXP_CAST(cos0Pi_8), - FIXP_CAST(cos1Pi_8), FIXP_CAST(cos2Pi_8), FIXP_CAST(cos3Pi_8), - FIXP_CAST(cos4Pi_8), FIXP_CAST(cos5Pi_8), FIXP_CAST(cos6Pi_8) -}; - -static const FIXP_HYB ci[13] = -{ - FIXP_CAST( sin6Pi_8), FIXP_CAST( sin5Pi_8), FIXP_CAST( sin4Pi_8), - FIXP_CAST( sin3Pi_8), FIXP_CAST( sin2Pi_8), FIXP_CAST( sin1Pi_8), - FIXP_CAST( sin0Pi_8) , - FIXP_CAST(-sin1Pi_8), FIXP_CAST(-sin2Pi_8), FIXP_CAST(-sin3Pi_8), - FIXP_CAST(-sin4Pi_8), FIXP_CAST(-sin5Pi_8), FIXP_CAST(-sin6Pi_8) -}; - -static void slotBasedEightChannelFiltering( const FIXP_DBL *pQmfReal, - const FIXP_DBL *pQmfImag, - - FIXP_DBL *mHybridReal, - FIXP_DBL *mHybridImag) -{ - - int bin; - FIXP_DBL _fft[128 + ALIGNMENT_DEFAULT - 1]; - FIXP_DBL *fft = (FIXP_DBL *)ALIGN_PTR(_fft); - -#if defined(ARCH_PREFER_MULT_32x16) - const FIXP_SGL *p = p8_13_20; /* BASELINE_PS */ -#else - const FIXP_DBL *p = p8_13_20; /* BASELINE_PS */ -#endif - - /* pre twiddeling */ - - /* x*(a*b + c*d) = fMultDiv2(x, fMultAddDiv2(fMultDiv2(a, b), c, d)) */ - /* x*(a*b - c*d) = fMultDiv2(x, fMultSubDiv2(fMultDiv2(a, b), c, d)) */ - FIXP_DBL accu1, accu2, accu3, accu4; - - #define TWIDDLE_1(n_0,n_1,n_2) \ - cplxMultDiv2(&accu1, &accu2, pQmfReal[n_0], pQmfImag[n_0], cr[n_0], ci[n_0]); \ - accu1 = fMultDiv2(p[n_0], accu1); \ - accu2 = fMultDiv2(p[n_0], accu2); \ - cplxMultDiv2(&accu3, &accu4, pQmfReal[n_1], pQmfImag[n_1], cr[n_1], ci[n_1]); \ - accu3 = fMultDiv2(p[n_1], accu3); \ - accu4 = fMultDiv2(p[n_1], accu4); \ - fft[FIXP_FFT_IDX_R(n_2)] = accu1 + accu3; \ - fft[FIXP_FFT_IDX_I(n_2)] = accu2 + accu4; - - #define TWIDDLE_0(n_0,n_1) \ - cplxMultDiv2(&accu1, &accu2, pQmfReal[n_0], pQmfImag[n_0], cr[n_0], ci[n_0]); \ - fft[FIXP_FFT_IDX_R(n_1)] = fMultDiv2(p[n_0], accu1); \ - fft[FIXP_FFT_IDX_I(n_1)] = fMultDiv2(p[n_0], accu2); - - TWIDDLE_0( 6, 0) - TWIDDLE_0( 7, 1) - - TWIDDLE_1( 0, 8, 2) - TWIDDLE_1( 1, 9, 3) - TWIDDLE_1( 2,10, 4) - TWIDDLE_1( 3,11, 5) - TWIDDLE_1( 4,12, 6) - - TWIDDLE_0( 5, 7) - - fft_8 (fft); - - /* resort fft data into output array*/ - for(bin=0; bin<8;bin++ ) { - mHybridReal[bin] = fft[FIXP_FFT_IDX_R(bin)] << 4; - mHybridImag[bin] = fft[FIXP_FFT_IDX_I(bin)] << 4; - } -} - - -/******************************************************************************* - Functionname: fillHybridDelayLine - ******************************************************************************* - - Description: The delay line of the hybrid filter is filled and copied from - left to right. - - Return: none - -*******************************************************************************/ - -void -fillHybridDelayLine( FIXP_DBL **fixpQmfReal, /*!< Qmf real Values */ - FIXP_DBL **fixpQmfImag, /*!< Qmf imag Values */ - FIXP_DBL fixpHybridLeftR[12], /*!< Hybrid real Values left channel */ - FIXP_DBL fixpHybridLeftI[12], /*!< Hybrid imag Values left channel */ - FIXP_DBL fixpHybridRightR[12], /*!< Hybrid real Values right channel */ - FIXP_DBL fixpHybridRightI[12], /*!< Hybrid imag Values right channel */ - HANDLE_HYBRID hHybrid ) -{ - int i; - - for (i = 0; i < HYBRID_FILTER_DELAY; i++) { - slotBasedHybridAnalysis ( fixpQmfReal[i], - fixpQmfReal[i], - fixpHybridLeftR, - fixpHybridLeftI, - hHybrid ); - } - - FDKmemcpy(fixpHybridRightR, fixpHybridLeftR, sizeof(FIXP_DBL)*NO_SUB_QMF_CHANNELS); - FDKmemcpy(fixpHybridRightI, fixpHybridLeftI, sizeof(FIXP_DBL)*NO_SUB_QMF_CHANNELS); -} - - -/******************************************************************************* - Functionname: slotBasedHybridAnalysis - ******************************************************************************* - - Description: The lower QMF subbands are further split to provide better - frequency resolution for PS processing. - - Return: none - -*******************************************************************************/ - - -void -slotBasedHybridAnalysis ( FIXP_DBL *fixpQmfReal, /*!< Qmf real Values */ - FIXP_DBL *fixpQmfImag, /*!< Qmf imag Values */ - - FIXP_DBL fixpHybridReal[12], /*!< Hybrid real Values */ - FIXP_DBL fixpHybridImag[12], /*!< Hybrid imag Values */ - - HANDLE_HYBRID hHybrid) -{ - int k, band; - HYBRID_RES hybridRes; - int chOffset = 0; - - C_ALLOC_SCRATCH_START(pTempRealSlot, FIXP_DBL, 4*HYBRID_FILTER_LENGTH); - - FIXP_DBL *pTempImagSlot = pTempRealSlot + HYBRID_FILTER_LENGTH; - FIXP_DBL *pWorkRealSlot = pTempImagSlot + HYBRID_FILTER_LENGTH; - FIXP_DBL *pWorkImagSlot = pWorkRealSlot + HYBRID_FILTER_LENGTH; - - /*! - Hybrid filtering is applied to the first hHybrid->nQmfBands QMF bands (3 when 10 or 20 stereo bands - are used, 5 when 34 stereo bands are used). For the remaining QMF bands a delay would be necessary. - But there is no need to implement a delay because there is a look-ahead of HYBRID_FILTER_DELAY = 6 - QMF samples in the low-band buffer. - */ - - for(band = 0; band < hHybrid->nQmfBands; band++) { - - /* get hybrid resolution per qmf band */ - /* in case of baseline ps 10/20 band stereo mode : */ - /* */ - /* qmfBand[0] : 8 ( HYBRID_8_CPLX ) */ - /* qmfBand[1] : 2 ( HYBRID_2_REAL ) */ - /* qmfBand[2] : 2 ( HYBRID_2_REAL ) */ - /* */ - /* (split the 3 lower qmf band to 12 hybrid bands) */ - - hybridRes = (HYBRID_RES)hHybrid->pResolution[band]; - - FDKmemcpy(pWorkRealSlot, hHybrid->mQmfBufferRealSlot[band], hHybrid->qmfBufferMove * sizeof(FIXP_DBL)); - FDKmemcpy(pWorkImagSlot, hHybrid->mQmfBufferImagSlot[band], hHybrid->qmfBufferMove * sizeof(FIXP_DBL)); - - pWorkRealSlot[hHybrid->qmfBufferMove] = fixpQmfReal[band]; - pWorkImagSlot[hHybrid->qmfBufferMove] = fixpQmfImag[band]; - - FDKmemcpy(hHybrid->mQmfBufferRealSlot[band], pWorkRealSlot + 1, hHybrid->qmfBufferMove * sizeof(FIXP_DBL)); - FDKmemcpy(hHybrid->mQmfBufferImagSlot[band], pWorkImagSlot + 1, hHybrid->qmfBufferMove * sizeof(FIXP_DBL)); - - if (fixpQmfReal) { - - /* actual filtering only if output signal requested */ - switch( hybridRes ) { - - /* HYBRID_2_REAL & HYBRID_8_CPLX are only needful for baseline ps */ - case HYBRID_2_REAL: - - slotBasedDualChannelFiltering( pWorkRealSlot, - pWorkImagSlot, - pTempRealSlot, - pTempImagSlot); - break; - - case HYBRID_8_CPLX: - - slotBasedEightChannelFiltering( pWorkRealSlot, - pWorkImagSlot, - pTempRealSlot, - pTempImagSlot); - break; - - default: - FDK_ASSERT(0); - } - - for(k = 0; k < (SCHAR)hybridRes; k++) { - fixpHybridReal [chOffset + k] = pTempRealSlot[k]; - fixpHybridImag [chOffset + k] = pTempImagSlot[k]; - } - chOffset += hybridRes; - } /* if (mHybridReal) */ - } - - /* group hybrid channels 3+4 -> 3 and 2+5 -> 2 */ - fixpHybridReal[3] += fixpHybridReal[4]; - fixpHybridImag[3] += fixpHybridImag[4]; - fixpHybridReal[4] = (FIXP_DBL)0; - fixpHybridImag[4] = (FIXP_DBL)0; - - fixpHybridReal[2] += fixpHybridReal[5]; - fixpHybridImag[2] += fixpHybridImag[5]; - fixpHybridReal[5] = (FIXP_DBL)0; - fixpHybridImag[5] = (FIXP_DBL)0; - - /* free memory on scratch */ - C_ALLOC_SCRATCH_END(pTempRealSlot, FIXP_DBL, 4*HYBRID_FILTER_LENGTH); - -} - - -/******************************************************************************* - Functionname: slotBasedHybridSynthesis - ******************************************************************************* - - Description: The coefficients offering higher resolution for the lower QMF - channel are simply added prior to the synthesis with the 54 - subbands QMF. - - Arguments: - - Return: none - -*******************************************************************************/ - -/*! 
-      l,r0(n) ---\
-      l,r1(n) ---- + --\
-      l,r2(n) ---/      \
-                         + --> F0(w)
-      l,r3(n) ---\      /
-      l,r4(n) ---- + --/
-      l,r5(n) ---/
-
-
-      l,r6(n) ---\
-                  + ---------> F1(w)
-      l,r7(n) ---/
-
-
-      l,r8(n) ---\
-                  + ---------> F2(w)
-      l,r9(n) ---/
-
-
- Hybrid QMF synthesis filterbank for the 10 and 20 stereo-bands configurations. The - coefficients offering higher resolution for the lower QMF channel are simply added - prior to the synthesis with the 54 subbands QMF. - - [see ISO/IEC 14496-3:2001/FDAM 2:2004(E) - Page 52] -*/ - - -void -slotBasedHybridSynthesis ( FIXP_DBL *fixpHybridReal, /*!< Hybrid real Values */ - FIXP_DBL *fixpHybridImag, /*!< Hybrid imag Values */ - FIXP_DBL *fixpQmfReal, /*!< Qmf real Values */ - FIXP_DBL *fixpQmfImag, /*!< Qmf imag Values */ - HANDLE_HYBRID hHybrid ) /*!< Handle to HYBRID struct. */ -{ - int k, band; - - HYBRID_RES hybridRes; - int chOffset = 0; - - for(band = 0; band < hHybrid->nQmfBands; band++) { - - FIXP_DBL qmfReal = FL2FXCONST_DBL(0.f); - FIXP_DBL qmfImag = FL2FXCONST_DBL(0.f); - hybridRes = (HYBRID_RES)hHybrid->pResolution[band]; - - for(k = 0; k < (SCHAR)hybridRes; k++) { - qmfReal += fixpHybridReal[chOffset + k]; - qmfImag += fixpHybridImag[chOffset + k]; - } - - fixpQmfReal[band] = qmfReal; - fixpQmfImag[band] = qmfImag; - - chOffset += hybridRes; - } -} - - - -- cgit v1.2.3