diff options
Diffstat (limited to 'media/openmax_dl/dl/sp/src/omxSP_FFTInv_CCSToR_F32_Sfs_unscaled_s.S')
| -rw-r--r-- | media/openmax_dl/dl/sp/src/omxSP_FFTInv_CCSToR_F32_Sfs_unscaled_s.S | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/media/openmax_dl/dl/sp/src/omxSP_FFTInv_CCSToR_F32_Sfs_unscaled_s.S b/media/openmax_dl/dl/sp/src/omxSP_FFTInv_CCSToR_F32_Sfs_unscaled_s.S deleted file mode 100644 index 838de317f0..0000000000 --- a/media/openmax_dl/dl/sp/src/omxSP_FFTInv_CCSToR_F32_Sfs_unscaled_s.S +++ /dev/null @@ -1,284 +0,0 @@ -@// -@// Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. -@// -@// Copyright 2016, Mozilla Foundation and contributors -@// -@// 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 omxSP_FFTInv_CCSToR_S32_Sfs_s.s -@// to support float instead of SC32. -@// -@// It is further modified to produce an "unscaled" version, which -@// actually multiplies by two for consistency with the other FFT functions -@// in use. -@// - -@// -@// Description: -@// Compute an inverse FFT for a 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) - - .extern armSP_FFTInv_CToC_FC32_Radix2_fs_OutOfPlace_unsafe - .extern armSP_FFTInv_CToC_FC32_Radix4_fs_OutOfPlace_unsafe - .extern armSP_FFTInv_CToC_FC32_Radix8_fs_OutOfPlace_unsafe - .extern armSP_FFTInv_CToC_FC32_Radix4_OutOfPlace_unsafe - .extern armSP_FFTInv_CToC_FC32_Radix2_OutOfPlace_unsafe - .extern armSP_FFTInv_CCSToR_F32_preTwiddleRadix2_unsafe - - -@// Set debugging level -@//DEBUG_ON SETL {TRUE} - - - -@// Guarding implementation by the processor name - - - - @// Guarding implementation by the processor name - -@// Import symbols required from other files -@// (For example tables) - .extern armSP_FFTInv_CToC_FC32_Radix4_ls_OutOfPlace_unsafe - .extern armSP_FFTInv_CToC_FC32_Radix2_ls_OutOfPlace_unsafe - - -@//Input Registers - -#define pSrc r0 -#define pDst r1 -#define pFFTSpec r2 -#define scale r3 - - -@// Output registers -#define result r0 - -@//Local Scratch Registers - -#define argTwiddle r1 -#define argDst r2 -#define argScale r4 -#define tmpOrder r4 -#define pTwiddle r4 -#define pOut r5 -#define subFFTSize r7 -#define subFFTNum r6 -#define N r6 -#define order r14 -#define diff r9 -@// Total num of radix stages required to comple the FFT -#define count r8 -#define x0r r4 -#define x0i r5 -#define diffMinusOne r2 -#define round r3 - -#define pOut1 r2 -#define size r7 -#define step r8 -#define step1 r9 -#define twStep r10 -#define pTwiddleTmp r11 -#define argTwiddle1 r12 -#define zero r14 - -@// Neon registers - -#define dX0 D0 -#define dShift D1 -#define dX1 D1 -#define dY0 D2 -#define dY1 D3 -#define dX0r D0 -#define dX0i D1 -#define dX1r D2 -#define dX1i D3 -#define dW0r D4 -#define dW0i D5 -#define dW1r D6 -#define dW1i D7 -#define dT0 D8 -#define dT1 D9 -#define dT2 D10 -#define dT3 D11 -#define qT0 d12 -#define qT1 d14 -#define qT2 d16 -#define qT3 d18 -#define dY0r D4 -#define dY0i D5 -#define dY1r D6 -#define dY1i D7 -#define dzero D20 - -#define dY2 D4 -#define dY3 D5 -#define dW0 D6 -#define dW1 D7 -#define dW0Tmp D10 -#define dW1Neg D11 - -#define sN S0.S32 -#define fN S1 -@// two must be the same as dScale[0]! -#define dScale D2 -#define two S4 - - - @// Allocate stack memory required by the function - M_ALLOC4 complexFFTSize, 4 - - @// Write function header - M_START omxSP_FFTInv_CCSToR_F32_Sfs_unscaled,r11,d15 - -@ Structure offsets for the FFTSpec - .set ARMsFFTSpec_N, 0 - .set ARMsFFTSpec_pBitRev, 4 - .set ARMsFFTSpec_pTwiddle, 8 - .set ARMsFFTSpec_pBuf, 12 - - @// Define stack arguments - - @// Read the size from structure and take log - LDR N, [pFFTSpec, #ARMsFFTSpec_N] - - @// Read other structure parameters - LDR pTwiddle, [pFFTSpec, #ARMsFFTSpec_pTwiddle] - LDR pOut, [pFFTSpec, #ARMsFFTSpec_pBuf] - - @// N=1 Treat seperately - CMP N,#1 - BGT sizeGreaterThanOne - VLD1.F32 dX0[0],[pSrc] - VST1.F32 dX0[0],[pDst] - - B End - -sizeGreaterThanOne: - - @// Call the preTwiddle Radix2 stage before doing the compledIFFT - - - BL armSP_FFTInv_CCSToR_F32_preTwiddleRadix2_unsafe - - -complexIFFT: - - ASR N,N,#1 @// N/2 point complex IFFT - M_STR N, complexFFTSize @ Save N for scaling later - ADD pSrc,pOut,N,LSL #3 @// set pSrc as pOut1 - - CLZ order,N @// N = 2^order - RSB order,order,#31 - MOV subFFTSize,#1 - @//MOV subFFTNum,N - - CMP order,#3 - BGT orderGreaterthan3 @// order > 3 - - CMP order,#1 - BGE orderGreaterthan0 @// order > 0 - - VLD1.F32 dX0,[pSrc] - VST1.F32 dX0,[pDst] - MOV pSrc,pDst - BLT FFTEnd - -orderGreaterthan0: - @// set the buffers appropriately for various orders - CMP order,#2 - MOVNE argDst,pDst - MOVEQ argDst,pOut - @// Pass the first stage destination in RN5 - MOVEQ pOut,pDst - MOV argTwiddle,pTwiddle - - BGE orderGreaterthan1 - BLLT armSP_FFTInv_CToC_FC32_Radix2_fs_OutOfPlace_unsafe @// order = 1 - B FFTEnd - -orderGreaterthan1: - MOV tmpOrder,order @// tmpOrder = RN 4 - BL armSP_FFTInv_CToC_FC32_Radix2_fs_OutOfPlace_unsafe - CMP tmpOrder,#2 - BLGT armSP_FFTInv_CToC_FC32_Radix2_OutOfPlace_unsafe - BL armSP_FFTInv_CToC_FC32_Radix2_ls_OutOfPlace_unsafe - B FFTEnd - - -orderGreaterthan3: -specialScaleCase: - - @// Set input args to fft stages - TST order, #2 - MOVNE argDst,pDst - MOVEQ argDst,pOut - @// Pass the first stage destination in RN5 - MOVEQ pOut,pDst - MOV argTwiddle,pTwiddle - - @//check for even or odd order - @// NOTE: The following combination of BL's would work fine even though - @// the first BL would corrupt the flags. This is because the end of - @// the "grpZeroSetLoop" loop inside - @// armSP_FFTInv_CToC_FC32_Radix4_fs_OutOfPlace_unsafe sets the Z flag - @// to EQ - - TST order,#0x00000001 - BLEQ armSP_FFTInv_CToC_FC32_Radix4_fs_OutOfPlace_unsafe - BLNE armSP_FFTInv_CToC_FC32_Radix8_fs_OutOfPlace_unsafe - - CMP subFFTNum,#4 - BLT FFTEnd - - -unscaledRadix4Loop: - BEQ lastStageUnscaledRadix4 - BL armSP_FFTInv_CToC_FC32_Radix4_OutOfPlace_unsafe - CMP subFFTNum,#4 - B unscaledRadix4Loop - -lastStageUnscaledRadix4: - BL armSP_FFTInv_CToC_FC32_Radix4_ls_OutOfPlace_unsafe - B FFTEnd - -FFTEnd: @// Does only the scaling - @ Scale inverse FFT result by 2 for consistency with other FFTs - VMOV.F32 two, #2.0 @ two = dScale[0] - - @// N = subFFTSize ; dataptr = pDst -scaleFFTData: - VLD1.F32 {dX0},[pSrc] @// pSrc contains pDst pointer - SUBS subFFTSize,subFFTSize,#1 - VMUL.F32 dX0, dX0, dScale[0] - VST1.F32 {dX0},[pSrc]! - - BGT scaleFFTData - - -End: - @// Set return value - MOV result, #OMX_Sts_NoErr - - @// Write function tail - M_END - - - - .end |