diff options
Diffstat (limited to 'media/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix2_ls_unsafe_s.S')
| -rw-r--r-- | media/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix2_ls_unsafe_s.S | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/media/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix2_ls_unsafe_s.S b/media/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix2_ls_unsafe_s.S deleted file mode 100644 index ac8d982200..0000000000 --- a/media/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix2_ls_unsafe_s.S +++ /dev/null @@ -1,153 +0,0 @@ -@// -@// 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 is a modification of armSP_FFT_CToC_SC32_Radix2_ls_unsafe_s.S -@// to support float instead of SC32. -@// - -@// -@// Description: -@// Compute the last stage of a Radix 2 DIT in-order out-of-place 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 - - -@//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 - -@// Neon Registers - -#define dWr d0 -#define dWi d1 -#define dXr0 d2 -#define dXi0 d3 -#define dXr1 d4 -#define dXi1 d5 -#define dYr0 d6 -#define dYi0 d7 -#define dYr1 d8 -#define dYi1 d9 -#define qT0 d10 -#define qT1 d12 - - .MACRO FFTSTAGE scaled, inverse, name - - - MOV outPointStep,subFFTSize,LSL #3 - @// 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 - - RSB dstStep,outPointStep,#16 - - - @// Loop on 2 grps at a time for the last stage - -radix2lsGrpLoop\name : - @ dWr = [pTwiddle[0].Re, pTwiddle[1].Re] - @ dWi = [pTwiddle[0].Im, pTwiddle[1].Im] - VLD2.F32 {dWr,dWi},[pTwiddle, :64]! - - @ dXr0 = [pSrc[0].Re, pSrc[2].Re] - @ dXi0 = [pSrc[0].Im, pSrc[2].Im] - @ dXr1 = [pSrc[1].Re, pSrc[3].Re] - @ dXi1 = [pSrc[1].Im, pSrc[3].Im] - VLD4.F32 {dXr0,dXi0,dXr1,dXi1},[pSrc, :128]! - SUBS grpCount,grpCount,#4 @// grpCount is multiplied by 2 - - .ifeqs "\inverse", "TRUE" - VMUL.F32 qT0,dWr,dXr1 - VMLA.F32 qT0,dWi,dXi1 @// real part - VMUL.F32 qT1,dWr,dXi1 - VMLS.F32 qT1,dWi,dXr1 @// imag part - - .else - - VMUL.F32 qT0,dWr,dXr1 - VMLS.F32 qT0,dWi,dXi1 @// real part - VMUL.F32 qT1,dWr,dXi1 - VMLA.F32 qT1,dWi,dXr1 @// imag part - - .endif - - VSUB.F32 dYr0,dXr0,qT0 - VSUB.F32 dYi0,dXi0,qT1 - VADD.F32 dYr1,dXr0,qT0 - VADD.F32 dYi1,dXi0,qT1 - - VST2.F32 {dYr0,dYi0},[pDst],outPointStep - VST2.F32 {dYr1,dYi1},[pDst],dstStep @// dstStep = step = -outPointStep + 16 - - BGT radix2lsGrpLoop\name - - - @// Reset and Swap pSrc and pDst for the next stage - MOV pTmp,pDst - SUB pDst,pSrc,outPointStep,LSL #1 @// pDst -= 4*size; pSrc -= 8*size bytes - SUB pSrc,pTmp,outPointStep - - @// Reset pTwiddle for the next stage - SUB pTwiddle,pTwiddle,outPointStep @// pTwiddle -= 4*size bytes - - .endm - - - - M_START armSP_FFTFwd_CToC_FC32_Radix2_ls_OutOfPlace_unsafe,r4,"" - FFTSTAGE "FALSE","FALSE",fwd - M_END - - - - M_START armSP_FFTInv_CToC_FC32_Radix2_ls_OutOfPlace_unsafe,r4 - FFTSTAGE "FALSE","TRUE",inv - M_END - - .end |