diff options
Diffstat (limited to 'libFDK')
| -rw-r--r-- | libFDK/src/arm/dct_arm.cpp | 572 | ||||
| -rw-r--r-- | libFDK/src/dct.cpp | 74 |
2 files changed, 23 insertions, 623 deletions
diff --git a/libFDK/src/arm/dct_arm.cpp b/libFDK/src/arm/dct_arm.cpp deleted file mode 100644 index dd66109..0000000 --- a/libFDK/src/arm/dct_arm.cpp +++ /dev/null @@ -1,572 +0,0 @@ -/* ----------------------------------------------------------------------------- -Software License for The Fraunhofer FDK AAC Codec Library for Android - -© Copyright 1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten -Forschung e.V. All rights reserved. - - 1. INTRODUCTION -The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software -that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding -scheme for digital audio. This FDK AAC Codec software is intended to be used on -a wide variety of Android devices. - -AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient -general perceptual audio codecs. AAC-ELD is considered the best-performing -full-bandwidth communications codec by independent studies and is widely -deployed. AAC has been standardized by ISO and IEC as part of the MPEG -specifications. - -Patent licenses for necessary patent claims for the FDK AAC Codec (including -those of Fraunhofer) may be obtained through Via Licensing -(www.vialicensing.com) or through the respective patent owners individually for -the purpose of encoding or decoding bit streams in products that are compliant -with the ISO/IEC MPEG audio standards. Please note that most manufacturers of -Android devices already license these patent claims through Via Licensing or -directly from the patent owners, and therefore FDK AAC Codec software may -already be covered under those patent licenses when it is used for those -licensed purposes only. - -Commercially-licensed AAC software libraries, including floating-point versions -with enhanced sound quality, are also available from Fraunhofer. Users are -encouraged to check the Fraunhofer website for additional applications -information and documentation. - -2. COPYRIGHT LICENSE - -Redistribution and use in source and binary forms, with or without modification, -are permitted without payment of copyright license fees provided that you -satisfy the following conditions: - -You must retain the complete text of this software license in redistributions of -the FDK AAC Codec or your modifications thereto in source code form. - -You must retain the complete text of this software license in the documentation -and/or other materials provided with redistributions of the FDK AAC Codec or -your modifications thereto in binary form. You must make available free of -charge copies of the complete source code of the FDK AAC Codec and your -modifications thereto to recipients of copies in binary form. - -The name of Fraunhofer may not be used to endorse or promote products derived -from this library without prior written permission. - -You may not charge copyright license fees for anyone to use, copy or distribute -the FDK AAC Codec software or your modifications thereto. - -Your modified versions of the FDK AAC Codec must carry prominent notices stating -that you changed the software and the date of any change. For modified versions -of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android" -must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK -AAC Codec Library for Android." - -3. NO PATENT LICENSE - -NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without -limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE. -Fraunhofer provides no warranty of patent non-infringement with respect to this -software. - -You may use this FDK AAC Codec software or modifications thereto only for -purposes that are authorized by appropriate patent licenses. - -4. DISCLAIMER - -This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright -holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, -including but not limited to the implied warranties of merchantability and -fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR -CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, -or consequential damages, including but not limited to procurement of substitute -goods or services; loss of use, data, or profits, or business interruption, -however caused and on any theory of liability, whether in contract, strict -liability, or tort (including negligence), arising in any way out of the use of -this software, even if advised of the possibility of such damage. - -5. CONTACT INFORMATION - -Fraunhofer Institute for Integrated Circuits IIS -Attention: Audio and Multimedia Departments - FDK AAC LL -Am Wolfsmantel 33 -91058 Erlangen, Germany - -www.iis.fraunhofer.de/amm -amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------ */ - -/******************* Library for basic calculation routines ******************** - - Author(s): - - Description: - -*******************************************************************************/ - -#ifdef FUNCTION_dct_IV_func1 - -/* - Note: This assembler routine is here, because the ARM926 compiler does - not encode the inline assembler with optimal speed. - With this version, we save 2 cycles per loop iteration. -*/ - -__asm void dct_IV_func1(int i, const FIXP_SPK *twiddle, - FIXP_DBL *RESTRICT pDat_0, FIXP_DBL *RESTRICT pDat_1) { - /* Register map: - r0 i - r1 twiddle - r2 pDat_0 - r3 pDat_1 - r4 accu1 - r5 accu2 - r6 accu3 - r7 accu4 - r8 val_tw - r9 accuX - */ - PUSH{r4 - r9} - - /* 44 cycles for 2 iterations = 22 cycles/iteration */ - dct_IV_loop1_start - /* First iteration */ - LDR r8, - [r1], -# 4 // val_tw = *twiddle++; - LDR r5, - [ r2, #0 ] // accu2 = pDat_0[0] - LDR r4, - [ r3, #0 ] // accu1 = pDat_1[0] - - SMULWT r9, - r5, - r8 // accuX = accu2*val_tw.l - SMULWB r5, - r5, - r8 // accu2 = accu2*val_tw.h - RSB r9, - r9, -# 0 // accuX =-accu2*val_tw.l - SMLAWT r5, r4, r8, - r5 // accu2 = accu2*val_tw.h + accu1*val_tw.l - SMLAWB r4, - r4, r8, - r9 // accu1 = accu1*val_tw.h - accu2*val_tw.l - - LDR r8, - [r1], -# 4 // val_tw = *twiddle++; - LDR r7, - [ r3, # - 4 ] // accu4 = pDat_1[-1] - LDR r6, - [ r2, #4 ] // accu3 = pDat_0[1] - - SMULWB r9, - r7, - r8 // accuX = accu4*val_tw.h - SMULWT r7, - r7, - r8 // accu4 = accu4*val_tw.l - RSB r9, - r9, -# 0 // accuX =-accu4*val_tw.h - SMLAWB r7, r6, r8, - r7 // accu4 = accu4*val_tw.l+accu3*val_tw.h - SMLAWT r6, - r6, r8, - r9 // accu3 = accu3*val_tw.l-accu4*val_tw.h - - STR r5, - [r2], -# 4 // *pDat_0++ = accu2 - STR r4, [r2], -# 4 // *pDat_0++ = accu1 - STR r6, [r3], -#- 4 // *pDat_1-- = accu3 - STR r7, [r3], -#- 4 // *pDat_1-- = accu4 - - /* Second iteration */ - LDR r8, [r1], -# 4 // val_tw = *twiddle++; - LDR r5, - [ r2, #0 ] // accu2 = pDat_0[0] - LDR r4, - [ r3, #0 ] // accu1 = pDat_1[0] - - SMULWT r9, - r5, - r8 // accuX = accu2*val_tw.l - SMULWB r5, - r5, - r8 // accu2 = accu2*val_tw.h - RSB r9, - r9, -# 0 // accuX =-accu2*val_tw.l - SMLAWT r5, r4, r8, - r5 // accu2 = accu2*val_tw.h + accu1*val_tw.l - SMLAWB r4, - r4, r8, - r9 // accu1 = accu1*val_tw.h - accu2*val_tw.l - - LDR r8, - [r1], -# 4 // val_tw = *twiddle++; - LDR r7, - [ r3, # - 4 ] // accu4 = pDat_1[-1] - LDR r6, - [ r2, #4 ] // accu3 = pDat_0[1] - - SMULWB r9, - r7, - r8 // accuX = accu4*val_tw.h - SMULWT r7, - r7, - r8 // accu4 = accu4*val_tw.l - RSB r9, - r9, -# 0 // accuX =-accu4*val_tw.h - SMLAWB r7, r6, r8, - r7 // accu4 = accu4*val_tw.l+accu3*val_tw.h - SMLAWT r6, - r6, r8, - r9 // accu3 = accu3*val_tw.l-accu4*val_tw.h - - STR r5, - [r2], -# 4 // *pDat_0++ = accu2 - STR r4, [r2], -# 4 // *pDat_0++ = accu1 - STR r6, [r3], -#- 4 // *pDat_1-- = accu3 - STR r7, [r3], -#- 4 // *pDat_1-- = accu4 - - SUBS r0, r0, -# 1 BNE dct_IV_loop1_start - - POP { r4 - r9 } - - BX lr -} - -#endif /* FUNCTION_dct_IV_func1 */ - -#ifdef FUNCTION_dct_IV_func2 - -/* __attribute__((noinline)) */ -static inline void dct_IV_func2(int i, const FIXP_SPK *twiddle, - FIXP_DBL *pDat_0, FIXP_DBL *pDat_1, int inc) { - FIXP_DBL accu1, accu2, accu3, accu4, accuX; - LONG val_tw; - - accu1 = pDat_1[-2]; - accu2 = pDat_1[-1]; - - *--pDat_1 = -(pDat_0[1] >> 1); - *pDat_0++ = (pDat_0[0] >> 1); - - twiddle += inc; - - __asm { - LDR val_tw, [twiddle], inc, LSL #2 // val_tw = *twiddle; twiddle += inc - B dct_IV_loop2_2nd_part - - /* 42 cycles for 2 iterations = 21 cycles/iteration */ -dct_IV_loop2: - SMULWT accuX, accu2, val_tw - SMULWB accu2, accu2, val_tw - RSB accuX, accuX, #0 - SMLAWB accuX, accu1, val_tw, accuX - SMLAWT accu2, accu1, val_tw, accu2 - STR accuX, [pDat_0], #4 - STR accu2, [pDat_1, #-4] ! - - LDR accu4, [pDat_0, #4] - LDR accu3, [pDat_0] - SMULWB accuX, accu4, val_tw - SMULWT accu4, accu4, val_tw - RSB accuX, accuX, #0 - SMLAWT accuX, accu3, val_tw, accuX - SMLAWB accu4, accu3, val_tw, accu4 - - LDR accu1, [pDat_1, #-8] - LDR accu2, [pDat_1, #-4] - - LDR val_tw, [twiddle], inc, LSL #2 // val_tw = *twiddle; twiddle += inc - - STR accuX, [pDat_1, #-4] ! - STR accu4, [pDat_0], #4 - -dct_IV_loop2_2nd_part: - SMULWT accuX, accu2, val_tw - SMULWB accu2, accu2, val_tw - RSB accuX, accuX, #0 - SMLAWB accuX, accu1, val_tw, accuX - SMLAWT accu2, accu1, val_tw, accu2 - STR accuX, [pDat_0], #4 - STR accu2, [pDat_1, #-4] ! - - LDR accu4, [pDat_0, #4] - LDR accu3, [pDat_0] - SMULWB accuX, accu4, val_tw - SMULWT accu4, accu4, val_tw - RSB accuX, accuX, #0 - SMLAWT accuX, accu3, val_tw, accuX - SMLAWB accu4, accu3, val_tw, accu4 - - LDR accu1, [pDat_1, #-8] - LDR accu2, [pDat_1, #-4] - - STR accuX, [pDat_1, #-4] ! - STR accu4, [pDat_0], #4 - - LDR val_tw, [twiddle], inc, LSL #2 // val_tw = *twiddle; twiddle += inc - - SUBS i, i, #1 - BNE dct_IV_loop2 - } - - /* Last Sin and Cos value pair are the same */ - accu1 = fMultDiv2(accu1, WTC(0x5a82799a)); - accu2 = fMultDiv2(accu2, WTC(0x5a82799a)); - - *--pDat_1 = accu1 + accu2; - *pDat_0++ = accu1 - accu2; -} -#endif /* FUNCTION_dct_IV_func2 */ - -#ifdef FUNCTION_dst_IV_func1 - -__asm void dst_IV_func1(int i, const FIXP_SPK *twiddle, FIXP_DBL *pDat_0, - FIXP_DBL *pDat_1) { - /* Register map: - r0 i - r1 twiddle - r2 pDat_0 - r3 pDat_1 - r4 accu1 - r5 accu2 - r6 accu3 - r7 accu4 - r8 val_tw - r9 accuX - */ - PUSH{r4 - r9} - - dst_IV_loop1 LDR r8, - [r1], -# 4 // val_tw = *twiddle++ - LDR r5, - [r2] // accu2 = pDat_0[0] - LDR r6, - [ r2, #4 ] // accu3 = pDat_0[1] - RSB r5, - r5, -# 0 // accu2 = -accu2 - SMULWT r9, r5, - r8 // accuX = (-accu2)*val_tw.l - LDR r4, - [ r3, # - 4 ] // accu1 = pDat_1[-1] - RSB r9, - r9, -# 0 // accuX = -(-accu2)*val_tw.l - SMLAWB r9, r4, r8, - r9 // accuX = accu1*val_tw.h-(-accu2)*val_tw.l - SMULWT r4, - r4, - r8 // accu1 = accu1*val_tw.l - LDR r7, - [ r3, # - 8 ] // accu4 = pDat_1[-2] - SMLAWB r5, - r5, r8, - r4 // accu2 = (-accu2)*val_tw.t+accu1*val_tw.l - LDR r8, - [r1], -# 4 // val_tw = *twiddle++ - STR r5, [r2], -# 4 // *pDat_0++ = accu2 - STR r9, [r2], -# 4 // *pDat_0++ = accu1 (accuX) - RSB r7, r7, -# 0 // accu4 = -accu4 - SMULWB r5, r7, - r8 // accu2 = (-accu4)*val_tw.h - SMULWB r4, - r6, - r8 // accu1 = (-accu4)*val_tw.l - RSB r5, - r5, -# 0 // accu2 = -(-accu4)*val_tw.h - SMLAWT r6, r6, r8, - r5 // accu3 = (-accu4)*val_tw.l-(-accu3)*val_tw.h - SMLAWT r7, - r7, r8, - r4 // accu4 = (-accu3)*val_tw.l+(-accu4)*val_tw.h - STR r6, - [ r3, # - 4 ] ! // *--pDat_1 = accu3 - STR r7, - [ r3, # - 4 ] ! // *--pDat_1 = accu4 - - LDR r8, - [r1], -# 4 // val_tw = *twiddle++ - LDR r5, - [r2] // accu2 = pDat_0[0] - LDR r6, - [ r2, #4 ] // accu3 = pDat_0[1] - RSB r5, - r5, -# 0 // accu2 = -accu2 - SMULWT r9, r5, - r8 // accuX = (-accu2)*val_tw.l - LDR r4, - [ r3, # - 4 ] // accu1 = pDat_1[-1] - RSB r9, - r9, -# 0 // accuX = -(-accu2)*val_tw.l - SMLAWB r9, r4, r8, - r9 // accuX = accu1*val_tw.h-(-accu2)*val_tw.l - SMULWT r4, - r4, - r8 // accu1 = accu1*val_tw.l - LDR r7, - [ r3, # - 8 ] // accu4 = pDat_1[-2] - SMLAWB r5, - r5, r8, - r4 // accu2 = (-accu2)*val_tw.t+accu1*val_tw.l - LDR r8, - [r1], -# 4 // val_tw = *twiddle++ - STR r5, [r2], -# 4 // *pDat_0++ = accu2 - STR r9, [r2], -# 4 // *pDat_0++ = accu1 (accuX) - RSB r7, r7, -# 0 // accu4 = -accu4 - SMULWB r5, r7, - r8 // accu2 = (-accu4)*val_tw.h - SMULWB r4, - r6, - r8 // accu1 = (-accu4)*val_tw.l - RSB r5, - r5, -# 0 // accu2 = -(-accu4)*val_tw.h - SMLAWT r6, r6, r8, - r5 // accu3 = (-accu4)*val_tw.l-(-accu3)*val_tw.h - SMLAWT r7, - r7, r8, - r4 // accu4 = (-accu3)*val_tw.l+(-accu4)*val_tw.h - STR r6, - [ r3, # - 4 ] ! // *--pDat_1 = accu3 - STR r7, - [ r3, # - 4 ] ! // *--pDat_1 = accu4 - - SUBS r0, - r0, -# 4 // i-= 4 - BNE dst_IV_loop1 - - POP{r4 - r9} BX lr -} -#endif /* FUNCTION_dst_IV_func1 */ - -#ifdef FUNCTION_dst_IV_func2 - -/* __attribute__((noinline)) */ -static inline void dst_IV_func2(int i, const FIXP_SPK *twiddle, - FIXP_DBL *RESTRICT pDat_0, - FIXP_DBL *RESTRICT pDat_1, int inc) { - FIXP_DBL accu1, accu2, accu3, accu4; - LONG val_tw; - - accu4 = pDat_0[0]; - accu3 = pDat_0[1]; - accu4 >>= 1; - accu3 >>= 1; - accu4 = -accu4; - - accu1 = pDat_1[-1]; - accu2 = pDat_1[0]; - - *pDat_0++ = accu3; - *pDat_1-- = accu4; - - __asm { - B dst_IV_loop2_2nd_part - - /* 50 cycles for 2 iterations = 25 cycles/iteration */ - -dst_IV_loop2: - - LDR val_tw, [twiddle], inc, LSL #2 // val_tw = *twiddle; twiddle += inc - - RSB accu2, accu2, #0 // accu2 = -accu2 - RSB accu1, accu1, #0 // accu1 = -accu1 - SMULWT accu3, accu2, val_tw // accu3 = (-accu2)*val_tw.l - SMULWT accu4, accu1, val_tw // accu4 = (-accu1)*val_tw.l - RSB accu3, accu3, #0 // accu3 = -accu2*val_tw.l - SMLAWB accu1, accu1, val_tw, accu3 // accu1 = -accu1*val_tw.h-(-accu2)*val_tw.l - SMLAWB accu2, accu2, val_tw, accu4 // accu2 = (-accu1)*val_tw.l+(-accu2)*val_tw.h - STR accu1, [pDat_1], #-4 // *pDat_1-- = accu1 - STR accu2, [pDat_0], #4 // *pDat_0++ = accu2 - - LDR accu4, [pDat_0] // accu4 = pDat_0[0] - LDR accu3, [pDat_0, #4] // accu3 = pDat_0[1] - - RSB accu4, accu4, #0 // accu4 = -accu4 - RSB accu3, accu3, #0 // accu3 = -accu3 - - SMULWB accu1, accu3, val_tw // accu1 = (-accu3)*val_tw.h - SMULWT accu2, accu3, val_tw // accu2 = (-accu3)*val_tw.l - RSB accu1, accu1, #0 // accu1 = -(-accu3)*val_tw.h - SMLAWT accu3, accu4, val_tw, accu1 // accu3 = (-accu4)*val_tw.l-(-accu3)*val_tw.h - SMLAWB accu4, accu4, val_tw, accu2 // accu4 = (-accu3)*val_tw.l+(-accu4)*val_tw.h - - LDR accu1, [pDat_1, #-4] // accu1 = pDat_1[-1] - LDR accu2, [pDat_1] // accu2 = pDat_1[0] - - STR accu3, [pDat_0], #4 // *pDat_0++ = accu3 - STR accu4, [pDat_1], #-4 // *pDat_1-- = accu4 - -dst_IV_loop2_2nd_part: - - LDR val_tw, [twiddle], inc, LSL #2 // val_tw = *twiddle; twiddle += inc - - RSB accu2, accu2, #0 // accu2 = -accu2 - RSB accu1, accu1, #0 // accu1 = -accu1 - SMULWT accu3, accu2, val_tw // accu3 = (-accu2)*val_tw.l - SMULWT accu4, accu1, val_tw // accu4 = (-accu1)*val_tw.l - RSB accu3, accu3, #0 // accu3 = -accu2*val_tw.l - SMLAWB accu1, accu1, val_tw, accu3 // accu1 = -accu1*val_tw.h-(-accu2)*val_tw.l - SMLAWB accu2, accu2, val_tw, accu4 // accu2 = (-accu1)*val_tw.l+(-accu2)*val_tw.h - STR accu1, [pDat_1], #-4 // *pDat_1-- = accu1 - STR accu2, [pDat_0], #4 // *pDat_0++ = accu2 - - LDR accu4, [pDat_0] // accu4 = pDat_0[0] - LDR accu3, [pDat_0, #4] // accu3 = pDat_0[1] - - RSB accu4, accu4, #0 // accu4 = -accu4 - RSB accu3, accu3, #0 // accu3 = -accu3 - - SMULWB accu1, accu3, val_tw // accu1 = (-accu3)*val_tw.h - SMULWT accu2, accu3, val_tw // accu2 = (-accu3)*val_tw.l - RSB accu1, accu1, #0 // accu1 = -(-accu3)*val_tw.h - SMLAWT accu3, accu4, val_tw, accu1 // accu3 = (-accu4)*val_tw.l-(-accu3)*val_tw.h - SMLAWB accu4, accu4, val_tw, accu2 // accu4 = (-accu3)*val_tw.l+(-accu4)*val_tw.h - - LDR accu1, [pDat_1, #-4] // accu1 = pDat_1[-1] - LDR accu2, [pDat_1] // accu2 = pDat_1[0] - - STR accu3, [pDat_0], #4 // *pDat_0++ = accu3 - STR accu4, [pDat_1], #-4 // *pDat_1-- = accu4 - - SUBS i, i, #1 - BNE dst_IV_loop2 - } - - /* Last Sin and Cos value pair are the same */ - accu1 = fMultDiv2(-accu1, WTC(0x5a82799a)); - accu2 = fMultDiv2(-accu2, WTC(0x5a82799a)); - - *pDat_0 = accu1 + accu2; - *pDat_1 = accu1 - accu2; -} -#endif /* FUNCTION_dst_IV_func2 */ diff --git a/libFDK/src/dct.cpp b/libFDK/src/dct.cpp index a451331..776493e 100644 --- a/libFDK/src/dct.cpp +++ b/libFDK/src/dct.cpp @@ -124,10 +124,6 @@ amm-info@iis.fraunhofer.de #include "FDK_tools_rom.h" #include "fft.h" -#if defined(__arm__) -#include "arm/dct_arm.cpp" -#endif - void dct_getTables(const FIXP_WTP **ptwiddle, const FIXP_STP **sin_twiddle, int *sin_step, int length) { const FIXP_WTP *twiddle; @@ -387,12 +383,6 @@ void dct_IV(FIXP_DBL *pDat, int L, int *pDat_e) { dct_getTables(&twiddle, &sin_twiddle, &sin_step, L); -#ifdef FUNCTION_dct_IV_func1 - if (M >= 4 && (M & 3) == 0) { - /* ARM926: 44 cycles for 2 iterations = 22 cycles/iteration */ - dct_IV_func1(M >> 2, twiddle, &pDat[0], &pDat[L - 1]); - } else -#endif /* FUNCTION_dct_IV_func1 */ { FIXP_DBL *RESTRICT pDat_0 = &pDat[0]; FIXP_DBL *RESTRICT pDat_1 = &pDat[L - 2]; @@ -410,10 +400,10 @@ void dct_IV(FIXP_DBL *pDat, int L, int *pDat_e) { cplxMultDiv2(&accu1, &accu2, accu1, accu2, twiddle[i]); cplxMultDiv2(&accu3, &accu4, accu4, accu3, twiddle[i + 1]); - pDat_0[0] = accu2; - pDat_0[1] = accu1; - pDat_1[0] = accu4; - pDat_1[1] = -accu3; + pDat_0[0] = accu2 >> 1; + pDat_0[1] = accu1 >> 1; + pDat_1[0] = accu4 >> 1; + pDat_1[1] = -(accu3 >> 1); } if (M & 1) { FIXP_DBL accu1, accu2; @@ -423,19 +413,13 @@ void dct_IV(FIXP_DBL *pDat, int L, int *pDat_e) { cplxMultDiv2(&accu1, &accu2, accu1, accu2, twiddle[i]); - pDat_0[0] = accu2; - pDat_0[1] = accu1; + pDat_0[0] = accu2 >> 1; + pDat_0[1] = accu1 >> 1; } } fft(M, pDat, pDat_e); -#ifdef FUNCTION_dct_IV_func2 - if (M >= 4 && (M & 3) == 0) { - /* ARM926: 42 cycles for 2 iterations = 21 cycles/iteration */ - dct_IV_func2(M >> 2, sin_twiddle, &pDat[0], &pDat[L], sin_step); - } else -#endif /* FUNCTION_dct_IV_func2 */ { FIXP_DBL *RESTRICT pDat_0 = &pDat[0]; FIXP_DBL *RESTRICT pDat_1 = &pDat[L - 2]; @@ -446,20 +430,19 @@ void dct_IV(FIXP_DBL *pDat, int L, int *pDat_e) { accu1 = pDat_1[0]; accu2 = pDat_1[1]; - pDat_1[1] = -(pDat_0[1] >> 1); - pDat_0[0] = (pDat_0[0] >> 1); + pDat_1[1] = -pDat_0[1]; /* 28 cycles for ARM926 */ for (idx = sin_step, i = 1; i<(M + 1)>> 1; i++, idx += sin_step) { FIXP_STP twd = sin_twiddle[idx]; - cplxMultDiv2(&accu3, &accu4, accu1, accu2, twd); + cplxMult(&accu3, &accu4, accu1, accu2, twd); pDat_0[1] = accu3; pDat_1[0] = accu4; pDat_0 += 2; pDat_1 -= 2; - cplxMultDiv2(&accu3, &accu4, pDat_0[1], pDat_0[0], twd); + cplxMult(&accu3, &accu4, pDat_0[1], pDat_0[0], twd); accu1 = pDat_1[0]; accu2 = pDat_1[1]; @@ -470,8 +453,8 @@ void dct_IV(FIXP_DBL *pDat, int L, int *pDat_e) { if ((M & 1) == 0) { /* Last Sin and Cos value pair are the same */ - accu1 = fMultDiv2(accu1, WTC(0x5a82799a)); - accu2 = fMultDiv2(accu2, WTC(0x5a82799a)); + accu1 = fMult(accu1, WTC(0x5a82799a)); + accu2 = fMult(accu2, WTC(0x5a82799a)); pDat_1[0] = accu1 + accu2; pDat_0[1] = accu1 - accu2; @@ -497,11 +480,6 @@ void dst_IV(FIXP_DBL *pDat, int L, int *pDat_e) { dct_getTables(&twiddle, &sin_twiddle, &sin_step, L); -#ifdef FUNCTION_dst_IV_func1 - if ((M >= 4) && ((M & 3) == 0)) { - dst_IV_func1(M, twiddle, &pDat[0], &pDat[L]); - } else -#endif { FIXP_DBL *RESTRICT pDat_0 = &pDat[0]; FIXP_DBL *RESTRICT pDat_1 = &pDat[L - 2]; @@ -519,10 +497,10 @@ void dst_IV(FIXP_DBL *pDat, int L, int *pDat_e) { cplxMultDiv2(&accu1, &accu2, accu1, accu2, twiddle[i]); cplxMultDiv2(&accu3, &accu4, accu4, accu3, twiddle[i + 1]); - pDat_0[0] = accu2; - pDat_0[1] = accu1; - pDat_1[0] = accu4; - pDat_1[1] = -accu3; + pDat_0[0] = accu2 >> 1; + pDat_0[1] = accu1 >> 1; + pDat_1[0] = accu4 >> 1; + pDat_1[1] = -(accu3 >> 1); } if (M & 1) { FIXP_DBL accu1, accu2; @@ -532,19 +510,13 @@ void dst_IV(FIXP_DBL *pDat, int L, int *pDat_e) { cplxMultDiv2(&accu1, &accu2, accu1, accu2, twiddle[i]); - pDat_0[0] = accu2; - pDat_0[1] = accu1; + pDat_0[0] = accu2 >> 1; + pDat_0[1] = accu1 >> 1; } } fft(M, pDat, pDat_e); -#ifdef FUNCTION_dst_IV_func2 - if ((M >= 4) && ((M & 3) == 0)) { - dst_IV_func2(M >> 2, sin_twiddle + sin_step, &pDat[0], &pDat[L - 1], - sin_step); - } else -#endif /* FUNCTION_dst_IV_func2 */ { FIXP_DBL *RESTRICT pDat_0; FIXP_DBL *RESTRICT pDat_1; @@ -558,20 +530,20 @@ void dst_IV(FIXP_DBL *pDat, int L, int *pDat_e) { accu1 = pDat_1[0]; accu2 = pDat_1[1]; - pDat_1[1] = -(pDat_0[0] >> 1); - pDat_0[0] = (pDat_0[1] >> 1); + pDat_1[1] = -pDat_0[0]; + pDat_0[0] = pDat_0[1]; for (idx = sin_step, i = 1; i<(M + 1)>> 1; i++, idx += sin_step) { FIXP_STP twd = sin_twiddle[idx]; - cplxMultDiv2(&accu3, &accu4, accu1, accu2, twd); + cplxMult(&accu3, &accu4, accu1, accu2, twd); pDat_1[0] = -accu3; pDat_0[1] = -accu4; pDat_0 += 2; pDat_1 -= 2; - cplxMultDiv2(&accu3, &accu4, pDat_0[1], pDat_0[0], twd); + cplxMult(&accu3, &accu4, pDat_0[1], pDat_0[0], twd); accu1 = pDat_1[0]; accu2 = pDat_1[1]; @@ -582,8 +554,8 @@ void dst_IV(FIXP_DBL *pDat, int L, int *pDat_e) { if ((M & 1) == 0) { /* Last Sin and Cos value pair are the same */ - accu1 = fMultDiv2(accu1, WTC(0x5a82799a)); - accu2 = fMultDiv2(accu2, WTC(0x5a82799a)); + accu1 = fMult(accu1, WTC(0x5a82799a)); + accu2 = fMult(accu2, WTC(0x5a82799a)); pDat_0[1] = -accu1 - accu2; pDat_1[0] = accu2 - accu1; 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