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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/openmax_dl/dl/sp/src/armSP_FFT_CToC_SC16_Radix2_ls_unsafe_s.S | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/openmax_dl/dl/sp/src/armSP_FFT_CToC_SC16_Radix2_ls_unsafe_s.S')
-rw-r--r-- | media/openmax_dl/dl/sp/src/armSP_FFT_CToC_SC16_Radix2_ls_unsafe_s.S | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/media/openmax_dl/dl/sp/src/armSP_FFT_CToC_SC16_Radix2_ls_unsafe_s.S b/media/openmax_dl/dl/sp/src/armSP_FFT_CToC_SC16_Radix2_ls_unsafe_s.S new file mode 100644 index 0000000000..9f7b531d30 --- /dev/null +++ b/media/openmax_dl/dl/sp/src/armSP_FFT_CToC_SC16_Radix2_ls_unsafe_s.S @@ -0,0 +1,210 @@ +@// +@// Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. +@// +@// Use of this source code is governed by a BSD-style license +@// that can be found in the LICENSE file in the root of the source +@// tree. An additional intellectual property rights grant can be found +@// in the file PATENTS. All contributing project authors may +@// be found in the AUTHORS file in the root of the source tree. +@// +@// This file was originally licensed as follows. It has been +@// relicensed with permission from the copyright holders. + +@// +@// +@// File Name: armSP_FFT_CToC_SC16_Radix2_ls_unsafe_s.s +@// OpenMAX DL: v1.0.2 +@// Last Modified Revision: 6741 +@// Last Modified Date: Wed, 18 Jul 2007 +@// +@// (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. +@// +@// +@// +@// Description: +@// Compute a Radix 2 FFT stage for a N point complex signal +@// +@// + + +@// Include standard headers + +#include "dl/api/armCOMM_s.h" +#include "dl/api/omxtypes_s.h" + + +@// Import symbols required from other files +@// (For example tables) + + + + +@// Set debugging level +@//DEBUG_ON SETL {TRUE} + + +@// Guarding implementation by the processor name + + + + + + + +@// Guarding implementation by the processor name + + +@//Input Registers + +#define pSrc r0 +#define pDst r2 +#define pTwiddle r1 +#define subFFTNum r6 +#define subFFTSize r7 + + +@//Output Registers + + +@//Local Scratch Registers + + +#define outPointStep r3 +#define grpCount r4 +#define dstStep r5 +#define pTmp r4 +#define step r8 + +@// Neon Registers + +#define dWr D0.S16 +#define dWi D1.S16 +#define dXr0 D2.S16 +#define dXi0 D3.S16 +#define dXr1 D4.S16 +#define dXi1 D5.S16 +#define dYr0 D6.S16 +#define dYi0 D7.S16 +#define dYr1 D8.S16 +#define dYi1 D9.S16 +#define qT0 Q5.S32 +#define qT1 Q6.S32 + + + .MACRO FFTSTAGE scaled, inverse, name + + + MOV outPointStep,subFFTSize,LSL #2 + @// Update grpCount and grpSize rightaway + + MOV subFFTNum,#1 @//after the last stage + LSL grpCount,subFFTSize,#1 + + @// update subFFTSize for the next stage + MOV subFFTSize,grpCount + + SUB step,outPointStep,#4 @// step = -4+outPointStep + RSB dstStep,step,#0 @// dstStep = -4-outPointStep+8 = -step + @//RSB dstStep,outPointStep,#16 + + + @// Loop on 2 grps at a time for the last stage + +grpLoop\name: + VLD2 {dWr[0],dWi[0]},[pTwiddle]! @// grp 0 + VLD2 {dWr[1],dWi[1]},[pTwiddle]! @// grp 1 + + @//VLD2 {dWr,dWi},[pTwiddle],#16 + + VLD4 {dXr0[0],dXi0[0],dXr1[0],dXi1[0]},[pSrc]! @// grp 0 + VLD4 {dXr0[1],dXi0[1],dXr1[1],dXi1[1]},[pSrc]! @// grp 1 + + + @//VLD4 {dXr0,dXi0,dXr1,dXi1},[pSrc],#32 + SUBS grpCount,grpCount,#4 @// grpCount is multiplied by 2 + + .ifeqs "\inverse", "TRUE" + VMULL qT0,dXr1,dWr + VMLAL qT0,dXi1,dWi @// real part + VMULL qT1,dXi1,dWr + VMLSL qT1,dXr1,dWi @// imag part + + .ELSE + VMULL qT0,dXr1,dWr + VMLSL qT0,dXi1,dWi @// real part + VMULL qT1,dXi1,dWr + VMLAL qT1,dXr1,dWi @// imag part + + .ENDIF + + VRSHRN dXr1,qT0,#15 + VRSHRN dXi1,qT1,#15 + + + .ifeqs "\scaled", "TRUE" + + VHSUB dYr0,dXr0,dXr1 + VHSUB dYi0,dXi0,dXi1 + VHADD dYr1,dXr0,dXr1 + VHADD dYi1,dXi0,dXi1 + + .ELSE + + VSUB dYr0,dXr0,dXr1 + VSUB dYi0,dXi0,dXi1 + VADD dYr1,dXr0,dXr1 + VADD dYi1,dXi0,dXi1 + + + .ENDIF + + VST2 {dYr0[0],dYi0[0]},[pDst]! + VST2 {dYr0[1],dYi0[1]},[pDst],step @// step = -4+outPointStep + + VST2 {dYr1[0],dYi1[0]},[pDst]! + VST2 {dYr1[1],dYi1[1]},[pDst],dstStep @// dstStep = -4-outPointStep+8 = -step + + @//VST2 {dYr0,dYi0},[pDst],outPointStep + @//VST2 {dYr1,dYi1},[pDst],dstStep @// dstStep = step = -outPointStep + 16 + + BGT grpLoop\name + + + @// Reset and Swap pSrc and pDst for the next stage + MOV pTmp,pDst + SUB pDst,pSrc,outPointStep,LSL #1 @// pDst -= 2*size; pSrc -= 4*size bytes + SUB pSrc,pTmp,outPointStep + + @// Reset pTwiddle for the next stage + SUB pTwiddle,pTwiddle,outPointStep @// pTwiddle -= 2*size bytes + + .endm + + + + M_START armSP_FFTFwd_CToC_SC16_Radix2_ls_OutOfPlace_unsafe,r4 + FFTSTAGE "FALSE","FALSE",FWD + M_END + + + + M_START armSP_FFTInv_CToC_SC16_Radix2_ls_OutOfPlace_unsafe,r4 + FFTSTAGE "FALSE","TRUE",INV + M_END + + + + M_START armSP_FFTFwd_CToC_SC16_Sfs_Radix2_ls_OutOfPlace_unsafe,r4 + FFTSTAGE "TRUE","FALSE",FWDSFS + M_END + + + + M_START armSP_FFTInv_CToC_SC16_Sfs_Radix2_ls_OutOfPlace_unsafe,r4 + FFTSTAGE "TRUE","TRUE",INVSFS + M_END + + + + + .END |