Index: third_party/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix8_fs_unsafe_s.S |
diff --git a/third_party/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix8_fs_unsafe_s.S b/third_party/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix8_fs_unsafe_s.S |
new file mode 100644 |
index 0000000000000000000000000000000000000000..3e360938ea1945347ddce359b93d70de2df83dcf |
--- /dev/null |
+++ b/third_party/openmax_dl/dl/sp/src/armSP_FFT_CToC_FC32_Radix8_fs_unsafe_s.S |
@@ -0,0 +1,426 @@ |
+@// |
+@// 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_FC32_Radix8_fs_unsafe_s.s |
+@// to support float instead of SC32. |
+@// |
+ |
+@// |
+@// Description: |
+@// Compute a first stage Radix 8 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 |
+@// dest buffer for the next stage (not pSrc for first stage) |
+#define pPingPongBuf r5 |
+ |
+ |
+@//Output Registers |
+ |
+ |
+@//Local Scratch Registers |
+ |
+#define grpSize r3 |
+@// Reuse grpSize as setCount |
+#define setCount r3 |
+#define pointStep r4 |
+#define outPointStep r4 |
+#define setStep r8 |
+#define step1 r9 |
+#define step2 r10 |
+#define t0 r11 |
+ |
+ |
+@// Neon Registers |
+ |
+#define dXr0 D0.F32 |
+#define dXi0 D1.F32 |
+#define dXr1 D2.F32 |
+#define dXi1 D3.F32 |
+#define dXr2 D4.F32 |
+#define dXi2 D5.F32 |
+#define dXr3 D6.F32 |
+#define dXi3 D7.F32 |
+#define dXr4 D8.F32 |
+#define dXi4 D9.F32 |
+#define dXr5 D10.F32 |
+#define dXi5 D11.F32 |
+#define dXr6 D12.F32 |
+#define dXi6 D13.F32 |
+#define dXr7 D14.F32 |
+#define dXi7 D15.F32 |
+#define qX0 Q0.F32 |
+#define qX1 Q1.F32 |
+#define qX2 Q2.F32 |
+#define qX3 Q3.F32 |
+#define qX4 Q4.F32 |
+#define qX5 Q5.F32 |
+#define qX6 Q6.F32 |
+#define qX7 Q7.F32 |
+ |
+#define dUr0 D16.F32 |
+#define dUi0 D17.F32 |
+#define dUr2 D18.F32 |
+#define dUi2 D19.F32 |
+#define dUr4 D20.F32 |
+#define dUi4 D21.F32 |
+#define dUr6 D22.F32 |
+#define dUi6 D23.F32 |
+#define dUr1 D24.F32 |
+#define dUi1 D25.F32 |
+#define dUr3 D26.F32 |
+#define dUi3 D27.F32 |
+#define dUr5 D28.F32 |
+#define dUi5 D29.F32 |
+@// reuse dXr7 and dXi7 |
+#define dUr7 D30.F32 |
+#define dUi7 D31.F32 |
+#define qU0 Q8.F32 |
+#define qU1 Q12.F32 |
+#define qU2 Q9.F32 |
+#define qU3 Q13.F32 |
+#define qU4 Q10.F32 |
+#define qU5 Q14.F32 |
+#define qU6 Q11.F32 |
+#define qU7 Q15.F32 |
+ |
+ |
+#define dVr0 D24.F32 |
+#define dVi0 D25.F32 |
+#define dVr2 D26.F32 |
+#define dVi2 D27.F32 |
+#define dVr4 D28.F32 |
+#define dVi4 D29.F32 |
+#define dVr6 D30.F32 |
+#define dVi6 D31.F32 |
+#define dVr1 D16.F32 |
+#define dVi1 D17.F32 |
+#define dVr3 D18.F32 |
+#define dVi3 D19.F32 |
+#define dVr5 D20.F32 |
+#define dVi5 D21.F32 |
+#define dVr7 D22.F32 |
+#define dVi7 D23.F32 |
+#define qV0 Q12.F32 |
+#define qV1 Q8.F32 |
+#define qV2 Q13.F32 |
+#define qV3 Q9.F32 |
+#define qV4 Q14.F32 |
+#define qV5 Q10.F32 |
+#define qV6 Q15.F32 |
+#define qV7 Q11.F32 |
+ |
+#define dYr0 D16.F32 |
+#define dYi0 D17.F32 |
+#define dYr2 D18.F32 |
+#define dYi2 D19.F32 |
+#define dYr4 D20.F32 |
+#define dYi4 D21.F32 |
+#define dYr6 D22.F32 |
+#define dYi6 D23.F32 |
+#define dYr1 D24.F32 |
+#define dYi1 D25.F32 |
+#define dYr3 D26.F32 |
+#define dYi3 D27.F32 |
+#define dYr5 D28.F32 |
+#define dYi5 D29.F32 |
+#define dYr7 D30.F32 |
+#define dYi7 D31.F32 |
+#define qY0 Q8.F32 |
+#define qY1 Q12.F32 |
+#define qY2 Q9.F32 |
+#define qY3 Q13.F32 |
+#define qY4 Q10.F32 |
+#define qY5 Q14.F32 |
+#define qY6 Q11.F32 |
+#define qY7 Q15.F32 |
+ |
+#define dT0 D14.F32 |
+#define dT1 D15.F32 |
+ |
+@// Define constants |
+ @ sqrt(1/2) |
+ONEBYSQRT2: .float 0.7071067811865476e0 |
+ |
+ |
+ .MACRO FFTSTAGE scaled, inverse, name |
+ |
+ @// Define stack arguments |
+ |
+ @// Update pSubFFTSize and pSubFFTNum regs |
+ @// subFFTSize = 1 for the first stage |
+ MOV subFFTSize,#8 |
+ LDR t0,=ONEBYSQRT2 |
+ |
+ @// Note: setCount = subFFTNum/8 (reuse the grpSize reg for setCount) |
+ LSR grpSize,subFFTNum,#3 |
+ MOV subFFTNum,grpSize |
+ |
+ |
+ @// pT0+1 increments pT0 by 8 bytes |
+ @// pT0+pointStep = increment of 8*pointStep bytes = grpSize bytes |
+ @// Note: outPointStep = pointStep for firststage |
+ |
+ MOV pointStep,grpSize,LSL #3 |
+ |
+ |
+ @// Calculate the step of input data for the next set |
+ @//MOV step1,pointStep,LSL #1 @// step1 = 2*pointStep |
+ VLD2 {dXr0,dXi0},[pSrc :128],pointStep @// data[0] |
+ MOV step1,grpSize,LSL #4 |
+ |
+ MOV step2,pointStep,LSL #3 |
+ VLD2 {dXr1,dXi1},[pSrc :128],pointStep @// data[1] |
+ SUB step2,step2,pointStep @// step2 = 7*pointStep |
+ @// setStep = - 7*pointStep+16 |
+ RSB setStep,step2,#16 |
+ |
+ VLD2 {dXr2,dXi2},[pSrc :128],pointStep @// data[2] |
+ VLD2 {dXr3,dXi3},[pSrc :128],pointStep @// data[3] |
+ VLD2 {dXr4,dXi4},[pSrc :128],pointStep @// data[4] |
+ VLD2 {dXr5,dXi5},[pSrc :128],pointStep @// data[5] |
+ VLD2 {dXr6,dXi6},[pSrc :128],pointStep @// data[6] |
+ @// data[7] & update pSrc for the next set |
+ @// setStep = -7*pointStep + 16 |
+ VLD2 {dXr7,dXi7},[pSrc :128],setStep |
+ @// grp = 0 a special case since all the twiddle factors are 1 |
+ @// Loop on the sets |
+ |
+radix8fsGrpZeroSetLoop\name : |
+ |
+ @// Decrement setcount |
+ SUBS setCount,setCount,#2 |
+ |
+ |
+ @// finish first stage of 8 point FFT |
+ |
+ VADD qU0,qX0,qX4 |
+ VADD qU2,qX1,qX5 |
+ VADD qU4,qX2,qX6 |
+ VADD qU6,qX3,qX7 |
+ |
+ @// finish second stage of 8 point FFT |
+ |
+ VADD qV0,qU0,qU4 |
+ VSUB qV2,qU0,qU4 |
+ VADD qV4,qU2,qU6 |
+ VSUB qV6,qU2,qU6 |
+ |
+ @// finish third stage of 8 point FFT |
+ |
+ VADD qY0,qV0,qV4 |
+ VSUB qY4,qV0,qV4 |
+ VST2 {dYr0,dYi0},[pDst :128],step1 @// store y0 |
+ |
+ .ifeqs "\inverse", "TRUE" |
+ |
+ VSUB dYr2,dVr2,dVi6 |
+ VADD dYi2,dVi2,dVr6 |
+ |
+ VADD dYr6,dVr2,dVi6 |
+ VST2 {dYr2,dYi2},[pDst :128],step1 @// store y2 |
+ VSUB dYi6,dVi2,dVr6 |
+ |
+ VSUB qU1,qX0,qX4 |
+ VST2 {dYr4,dYi4},[pDst :128],step1 @// store y4 |
+ |
+ VSUB qU3,qX1,qX5 |
+ VSUB qU5,qX2,qX6 |
+ VST2 {dYr6,dYi6},[pDst :128],step1 @// store y6 |
+ |
+ .ELSE |
+ |
+ VADD dYr6,dVr2,dVi6 |
+ VSUB dYi6,dVi2,dVr6 |
+ |
+ VSUB dYr2,dVr2,dVi6 |
+ VST2 {dYr6,dYi6},[pDst :128],step1 @// store y2 |
+ VADD dYi2,dVi2,dVr6 |
+ |
+ |
+ VSUB qU1,qX0,qX4 |
+ VST2 {dYr4,dYi4},[pDst :128],step1 @// store y4 |
+ VSUB qU3,qX1,qX5 |
+ VSUB qU5,qX2,qX6 |
+ VST2 {dYr2,dYi2},[pDst :128],step1 @// store y6 |
+ |
+ |
+ .ENDIF |
+ |
+ @// finish first stage of 8 point FFT |
+ |
+ VSUB qU7,qX3,qX7 |
+ VLD1 dT0[0], [t0] |
+ |
+ @// finish second stage of 8 point FFT |
+ |
+ VSUB dVr1,dUr1,dUi5 |
+ @// data[0] for next iteration |
+ VLD2 {dXr0,dXi0},[pSrc :128],pointStep |
+ VADD dVi1,dUi1,dUr5 |
+ VADD dVr3,dUr1,dUi5 |
+ VLD2 {dXr1,dXi1},[pSrc :128],pointStep @// data[1] |
+ VSUB dVi3,dUi1,dUr5 |
+ |
+ VSUB dVr5,dUr3,dUi7 |
+ VLD2 {dXr2,dXi2},[pSrc :128],pointStep @// data[2] |
+ VADD dVi5,dUi3,dUr7 |
+ VADD dVr7,dUr3,dUi7 |
+ VLD2 {dXr3,dXi3},[pSrc :128],pointStep @// data[3] |
+ VSUB dVi7,dUi3,dUr7 |
+ |
+ @// finish third stage of 8 point FFT |
+ |
+ .ifeqs "\inverse", "TRUE" |
+ |
+ @// calculate a*v5 |
+ VMUL dT1,dVr5,dT0[0] @// use dVi0 for dT1 |
+ |
+ VLD2 {dXr4,dXi4},[pSrc :128],pointStep @// data[4] |
+ VMUL dVi5,dVi5,dT0[0] |
+ |
+ VLD2 {dXr5,dXi5},[pSrc :128],pointStep @// data[5] |
+ VSUB dVr5,dT1,dVi5 @// a * V5 |
+ VADD dVi5,dT1,dVi5 |
+ |
+ VLD2 {dXr6,dXi6},[pSrc :128],pointStep @// data[6] |
+ |
+ @// calculate b*v7 |
+ VMUL dT1,dVr7,dT0[0] |
+ VMUL dVi7,dVi7,dT0[0] |
+ |
+ VADD qY1,qV1,qV5 |
+ VSUB qY5,qV1,qV5 |
+ |
+ |
+ VADD dVr7,dT1,dVi7 @// b * V7 |
+ VSUB dVi7,dVi7,dT1 |
+ SUB pDst, pDst, step2 @// set pDst to y1 |
+ |
+ @// On the last iteration, this will read past the end of pSrc, |
+ @// so skip this read. |
+ BEQ radix8SkipLastUpdateInv\name |
+ VLD2 {dXr7,dXi7},[pSrc :128],setStep @// data[7] |
+radix8SkipLastUpdateInv\name: |
+ |
+ VSUB dYr3,dVr3,dVr7 |
+ VSUB dYi3,dVi3,dVi7 |
+ VST2 {dYr1,dYi1},[pDst :128],step1 @// store y1 |
+ VADD dYr7,dVr3,dVr7 |
+ VADD dYi7,dVi3,dVi7 |
+ |
+ |
+ VST2 {dYr3,dYi3},[pDst :128],step1 @// store y3 |
+ VST2 {dYr5,dYi5},[pDst :128],step1 @// store y5 |
+ VST2 {dYr7,dYi7},[pDst :128] @// store y7 |
+ ADD pDst, pDst, #16 |
+ |
+ .ELSE |
+ |
+ @// calculate b*v7 |
+ VMUL dT1,dVr7,dT0[0] |
+ VLD2 {dXr4,dXi4},[pSrc :128],pointStep @// data[4] |
+ VMUL dVi7,dVi7,dT0[0] |
+ |
+ VLD2 {dXr5,dXi5},[pSrc :128],pointStep @// data[5] |
+ VADD dVr7,dT1,dVi7 @// b * V7 |
+ VSUB dVi7,dVi7,dT1 |
+ |
+ VLD2 {dXr6,dXi6},[pSrc :128],pointStep @// data[6] |
+ |
+ @// calculate a*v5 |
+ VMUL dT1,dVr5,dT0[0] @// use dVi0 for dT1 |
+ VMUL dVi5,dVi5,dT0[0] |
+ |
+ VADD dYr7,dVr3,dVr7 |
+ VADD dYi7,dVi3,dVi7 |
+ SUB pDst, pDst, step2 @// set pDst to y1 |
+ |
+ VSUB dVr5,dT1,dVi5 @// a * V5 |
+ VADD dVi5,dT1,dVi5 |
+ |
+ @// On the last iteration, this will read past the end of pSrc, |
+ @// so skip this read. |
+ BEQ radix8SkipLastUpdateFwd\name |
+ VLD2 {dXr7,dXi7},[pSrc :128],setStep @// data[7] |
+radix8SkipLastUpdateFwd\name: |
+ |
+ VSUB qY5,qV1,qV5 |
+ |
+ VSUB dYr3,dVr3,dVr7 |
+ VST2 {dYr7,dYi7},[pDst :128],step1 @// store y1 |
+ VSUB dYi3,dVi3,dVi7 |
+ VADD qY1,qV1,qV5 |
+ |
+ |
+ VST2 {dYr5,dYi5},[pDst :128],step1 @// store y3 |
+ VST2 {dYr3,dYi3},[pDst :128],step1 @// store y5 |
+ VST2 {dYr1,dYi1},[pDst :128]! @// store y7 |
+ |
+ .ENDIF |
+ |
+ |
+ @// update pDst for the next set |
+ SUB pDst, pDst, step2 |
+ BGT radix8fsGrpZeroSetLoop\name |
+ |
+ |
+ @// reset pSrc to pDst for the next stage |
+ SUB pSrc,pDst,pointStep @// pDst -= 2*grpSize |
+ MOV pDst,pPingPongBuf |
+ |
+ |
+ |
+ .endm |
+ |
+ |
+ @// Allocate stack memory required by the function |
+ |
+ |
+ M_START armSP_FFTFwd_CToC_FC32_Radix8_fs_OutOfPlace_unsafe,r4 |
+ FFTSTAGE "FALSE","FALSE",FWD |
+ M_END |
+ |
+ |
+ M_START armSP_FFTInv_CToC_FC32_Radix8_fs_OutOfPlace_unsafe,r4 |
+ FFTSTAGE "FALSE","TRUE",INV |
+ M_END |
+ |
+ |
+ |
+ .end |