diff options
Diffstat (limited to 'media/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix2_unsafe_s.S')
| -rw-r--r-- | media/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix2_unsafe_s.S | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/media/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix2_unsafe_s.S b/media/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix2_unsafe_s.S deleted file mode 100644 index f04e9b84ff..0000000000 --- a/media/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix2_unsafe_s.S +++ /dev/null @@ -1,191 +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_unsafe_s.s -@// to support float instead of SC32. -@// - -@// Description: -@// Compute a Radix 2 DIT in-order out-of-place FFT stage for an N point -@// complex signal. This handles the general stage, not the first or last -@// stage. -@// -@// - - -@// 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 pointStep r4 -#define grpCount r5 -#define setCount r8 -@//const RN 9 -#define step r10 -#define dstStep r11 -#define pTable r9 -#define pTmp r9 - -@// Neon Registers - -#define dW D0 -#define dX0 D2 -#define dX1 D3 -#define dX2 D4 -#define dX3 D5 -#define dY0 D6 -#define dY1 D7 -#define dY2 D8 -#define dY3 D9 -#define qT0 D10 -#define qT1 D11 - - - .MACRO FFTSTAGE scaled, inverse, name - - @// Define stack arguments - - - @// Update grpCount and grpSize rightaway inorder to reuse pGrpCount - @// and pGrpSize regs - - LSR subFFTNum,subFFTNum,#1 @//grpSize - LSL grpCount,subFFTSize,#1 - - - @// pT0+1 increments pT0 by 8 bytes - @// pT0+pointStep = increment of 8*pointStep bytes = 4*grpSize bytes - MOV pointStep,subFFTNum,LSL #2 - - @// update subFFTSize for the next stage - MOV subFFTSize,grpCount - - @// pOut0+1 increments pOut0 by 8 bytes - @// pOut0+outPointStep == increment of 8*outPointStep bytes = - @// 4*size bytes - SMULBB outPointStep,grpCount,pointStep - LSL pointStep,pointStep,#1 - - - RSB step,pointStep,#16 - RSB dstStep,outPointStep,#16 - - @// Loop on the groups - -radix2GrpLoop\name : - MOV setCount,pointStep,LSR #3 - VLD1.F32 dW,[pTwiddle],pointStep @//[wi | wr] - - - @// Loop on the sets - - -radix2SetLoop\name : - - - @// point0: dX0-real part dX1-img part - VLD2.F32 {dX0,dX1},[pSrc],pointStep - @// point1: dX2-real part dX3-img part - VLD2.F32 {dX2,dX3},[pSrc],step - - SUBS setCount,setCount,#2 - - .ifeqs "\inverse", "TRUE" - VMUL.F32 qT0,dX2,dW[0] - VMLA.F32 qT0,dX3,dW[1] @// real part - VMUL.F32 qT1,dX3,dW[0] - VMLS.F32 qT1,dX2,dW[1] @// imag part - - .else - - VMUL.F32 qT0,dX2,dW[0] - VMLS.F32 qT0,dX3,dW[1] @// real part - VMUL.F32 qT1,dX3,dW[0] - VMLA.F32 qT1,dX2,dW[1] @// imag part - - .endif - - VSUB.F32 dY0,dX0,qT0 - VSUB.F32 dY1,dX1,qT1 - VADD.F32 dY2,dX0,qT0 - VADD.F32 dY3,dX1,qT1 - - VST2.F32 {dY0,dY1},[pDst],outPointStep - @// dstStep = -outPointStep + 16 - VST2.F32 {dY2,dY3},[pDst],dstStep - - BGT radix2SetLoop\name - - SUBS grpCount,grpCount,#2 - ADD pSrc,pSrc,pointStep - BGT radix2GrpLoop\name - - - @// Reset and Swap pSrc and pDst for the next stage - MOV pTmp,pDst - @// pDst -= 4*size; pSrc -= 8*size bytes - SUB pDst,pSrc,outPointStep,LSL #1 - SUB pSrc,pTmp,outPointStep - - @// Reset pTwiddle for the next stage - @// pTwiddle -= 4*size bytes - SUB pTwiddle,pTwiddle,outPointStep - - - .endm - - - - M_START armSP_FFTFwd_CToC_FC32_Radix2_OutOfPlace_unsafe,r4 - FFTSTAGE "FALSE","FALSE",FWD - M_END - - - - M_START armSP_FFTInv_CToC_FC32_Radix2_OutOfPlace_unsafe,r4 - FFTSTAGE "FALSE","TRUE",INV - M_END - - - .end |