Index: third_party/openmax_dl/dl/sp/src/armSP_FFT_CToC_SC16_Radix2_unsafe_s.S |
diff --git a/third_party/openmax_dl/dl/sp/src/armSP_FFT_CToC_SC16_Radix2_unsafe_s.S b/third_party/openmax_dl/dl/sp/src/armSP_FFT_CToC_SC16_Radix2_unsafe_s.S |
new file mode 100644 |
index 0000000000000000000000000000000000000000..f9bbebcca9198a00fa5dc7ce428c18634addbf28 |
--- /dev/null |
+++ b/third_party/openmax_dl/dl/sp/src/armSP_FFT_CToC_SC16_Radix2_unsafe_s.S |
@@ -0,0 +1,219 @@ |
+@// |
+@// 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_unsafe_s.s |
+@// OpenMAX DL: v1.0.2 |
+@// Last Modified Revision: 5892 |
+@// Last Modified Date: Thu, 07 Jun 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 pointStep r4 |
+#define grpCount r5 |
+#define setCount r8 |
+#define step r10 |
+#define dstStep r11 |
+#define pTmp r9 |
+ |
+@// Neon Registers |
+ |
+#define dW D0.S16 |
+#define dX0 D2.S16 |
+#define dX1 D3.S16 |
+#define dX2 D4.S16 |
+#define dX3 D5.S16 |
+#define dY0 D6.S16 |
+#define dY1 D7.S16 |
+#define dY2 D8.S16 |
+#define dY3 D9.S16 |
+#define qT0 Q3.S32 |
+#define qT1 Q4.S32 |
+ |
+ |
+ |
+ .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 4*pointStep bytes = 2*grpSize bytes |
+ MOV pointStep,subFFTNum,LSL #1 |
+ |
+ @// update subFFTSize for the next stage |
+ MOV subFFTSize,grpCount |
+ |
+ @// pOut0+1 increments pOut0 by 8 bytes |
+ @// pOut0+outPointStep == increment of 4*outPointStep bytes = 2*size bytes |
+ SMULBB outPointStep,grpCount,pointStep |
+ LSL pointStep,pointStep,#1 |
+ |
+ |
+ RSB step,pointStep,#16 |
+ RSB dstStep,outPointStep,#16 |
+ |
+ @// Loop on the groups |
+ |
+grpLoop\name: |
+ |
+ VLD1 dW,[pTwiddle],pointStep @//[wi | wr] |
+ MOV setCount,pointStep,LSR #2 |
+ |
+ |
+ @// Loop on the sets: 4 at a time |
+ |
+ |
+setLoop\name: |
+ |
+ |
+ VLD2 {dX0,dX1},[pSrc],pointStep @// point0: dX0-real part dX1-img part |
+ VLD2 {dX2,dX3},[pSrc],step @// point1: dX2-real part dX3-img part |
+ |
+ SUBS setCount,setCount,#4 |
+ |
+ .ifeqs "\inverse", "TRUE" |
+ VMULL qT0,dX2,dW[0] |
+ VMLAL qT0,dX3,dW[1] @// real part |
+ VMULL qT1,dX3,dW[0] |
+ VMLSL qT1,dX2,dW[1] @// imag part |
+ |
+ .ELSE |
+ |
+ VMULL qT0,dX2,dW[0] |
+ VMLSL qT0,dX3,dW[1] @// real part |
+ VMULL qT1,dX3,dW[0] |
+ VMLAL qT1,dX2,dW[1] @// imag part |
+ |
+ .ENDIF |
+ |
+ VRSHRN dX2,qT0,#15 |
+ VRSHRN dX3,qT1,#15 |
+ |
+ .ifeqs "\scaled", "TRUE" |
+ VHSUB dY0,dX0,dX2 |
+ VHSUB dY1,dX1,dX3 |
+ VHADD dY2,dX0,dX2 |
+ VHADD dY3,dX1,dX3 |
+ |
+ .ELSE |
+ VSUB dY0,dX0,dX2 |
+ VSUB dY1,dX1,dX3 |
+ VADD dY2,dX0,dX2 |
+ VADD dY3,dX1,dX3 |
+ |
+ .ENDIF |
+ |
+ VST2 {dY0,dY1},[pDst],outPointStep |
+ VST2 {dY2,dY3},[pDst],dstStep @// dstStep = -outPointStep + 16 |
+ |
+ BGT setLoop\name |
+ |
+ SUBS grpCount,grpCount,#2 |
+ ADD pSrc,pSrc,pointStep |
+ 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_OutOfPlace_unsafe,r4 |
+ FFTSTAGE "FALSE","FALSE",FWD |
+ M_END |
+ |
+ |
+ |
+ M_START armSP_FFTInv_CToC_SC16_Radix2_OutOfPlace_unsafe,r4 |
+ FFTSTAGE "FALSE","TRUE",INV |
+ M_END |
+ |
+ |
+ |
+ M_START armSP_FFTFwd_CToC_SC16_Sfs_Radix2_OutOfPlace_unsafe,r4 |
+ FFTSTAGE "TRUE","FALSE",FWDSFS |
+ M_END |
+ |
+ |
+ |
+ M_START armSP_FFTInv_CToC_SC16_Sfs_Radix2_OutOfPlace_unsafe,r4 |
+ FFTSTAGE "TRUE","TRUE",INVSFS |
+ M_END |
+ |
+ |
+ |
+ |
+ |
+ .END |