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Code Issues Releases Activity

fft: remove 16-bit FFT and MDCT code

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No longer used by anything.
Unfortunately the old FFT_FLOAT/FFT_FIXED_32 is left as-is. It's
simply too much work for code meant to be all removed anyway.
This commit is contained in:
Lynne 2021-01-09 16:23:20 +01:00
parent 9e05421dbe
commit 151b41c8cc
No known key found for this signature in database
GPG Key ID: A2FEA5F03F034464
13 changed files with 14 additions and 690 deletions
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11
libavcodec/Makefile
View File

@ -83,10 +83,9 @@ OBJS-$(CONFIG_EXIF) += exif.o tiff_common.o
OBJS-$(CONFIG_FAANDCT) += faandct.o
OBJS-$(CONFIG_FAANIDCT) += faanidct.o
OBJS-$(CONFIG_FDCTDSP) += fdctdsp.o jfdctfst.o jfdctint.o
FFT-OBJS-$(CONFIG_HARDCODED_TABLES) += cos_tables.o cos_fixed_tables.o
OBJS-$(CONFIG_FFT) += avfft.o fft_fixed.o fft_float.o \
fft_fixed_32.o fft_init_table.o \
$(FFT-OBJS-yes)
FFT-OBJS-$(CONFIG_HARDCODED_TABLES) += cos_tables.o
OBJS-$(CONFIG_FFT) += avfft.o fft_float.o fft_fixed_32.o \
fft_init_table.o $(FFT-OBJS-yes)
OBJS-$(CONFIG_FLACDSP) += flacdsp.o
OBJS-$(CONFIG_FMTCONVERT) += fmtconvert.o
OBJS-$(CONFIG_GOLOMB) += golomb.o
@ -115,7 +114,7 @@ OBJS-$(CONFIG_LLVIDENCDSP) += lossless_videoencdsp.o
OBJS-$(CONFIG_LPC) += lpc.o
OBJS-$(CONFIG_LSP) += lsp.o
OBJS-$(CONFIG_LZF) += lzf.o
OBJS-$(CONFIG_MDCT) += mdct_fixed.o mdct_float.o mdct_fixed_32.o
OBJS-$(CONFIG_MDCT) += mdct_float.o mdct_fixed_32.o
OBJS-$(CONFIG_ME_CMP) += me_cmp.o
OBJS-$(CONFIG_MEDIACODEC) += mediacodecdec_common.o mediacodec_surface.o mediacodec_wrapper.o mediacodec_sw_buffer.o
OBJS-$(CONFIG_MPEG_ER) += mpeg_er.o
@ -1217,7 +1216,7 @@ TESTPROGS = avpacket \
TESTPROGS-$(CONFIG_CABAC) += cabac
TESTPROGS-$(CONFIG_DCT) += avfft
TESTPROGS-$(CONFIG_FFT) += fft fft-fixed fft-fixed32
TESTPROGS-$(CONFIG_FFT) += fft fft-fixed32
TESTPROGS-$(CONFIG_GOLOMB) += golomb
TESTPROGS-$(CONFIG_IDCTDSP) += dct
TESTPROGS-$(CONFIG_IIRFILTER) += iirfilter

9
libavcodec/arm/Makefile
View File

@ -5,8 +5,7 @@ OBJS-$(CONFIG_AC3DSP) += arm/ac3dsp_init_arm.o \
arm/ac3dsp_arm.o
OBJS-$(CONFIG_AUDIODSP) += arm/audiodsp_init_arm.o
OBJS-$(CONFIG_BLOCKDSP) += arm/blockdsp_init_arm.o
OBJS-$(CONFIG_FFT) += arm/fft_init_arm.o \
arm/fft_fixed_init_arm.o
OBJS-$(CONFIG_FFT) += arm/fft_init_arm.o
OBJS-$(CONFIG_FLACDSP) += arm/flacdsp_init_arm.o \
arm/flacdsp_arm.o
OBJS-$(CONFIG_FMTCONVERT) += arm/fmtconvert_init_arm.o
@ -108,8 +107,7 @@ NEON-OBJS-$(CONFIG_AUDIODSP) += arm/audiodsp_init_neon.o \
arm/int_neon.o
NEON-OBJS-$(CONFIG_BLOCKDSP) += arm/blockdsp_init_neon.o \
arm/blockdsp_neon.o
NEON-OBJS-$(CONFIG_FFT) += arm/fft_neon.o \
arm/fft_fixed_neon.o
NEON-OBJS-$(CONFIG_FFT) += arm/fft_neon.o
NEON-OBJS-$(CONFIG_FMTCONVERT) += arm/fmtconvert_neon.o
NEON-OBJS-$(CONFIG_G722DSP) += arm/g722dsp_neon.o
NEON-OBJS-$(CONFIG_H264CHROMA) += arm/h264cmc_neon.o
@ -123,8 +121,7 @@ NEON-OBJS-$(CONFIG_HPELDSP) += arm/hpeldsp_init_neon.o \
NEON-OBJS-$(CONFIG_IDCTDSP) += arm/idctdsp_init_neon.o \
arm/idctdsp_neon.o \
arm/simple_idct_neon.o
NEON-OBJS-$(CONFIG_MDCT) += arm/mdct_neon.o \
arm/mdct_fixed_neon.o
NEON-OBJS-$(CONFIG_MDCT) += arm/mdct_neon.o
NEON-OBJS-$(CONFIG_MPEGVIDEO) += arm/mpegvideo_neon.o
NEON-OBJS-$(CONFIG_PIXBLOCKDSP) += arm/pixblockdsp_neon.o
NEON-OBJS-$(CONFIG_RDFT) += arm/rdft_neon.o

50
libavcodec/arm/fft_fixed_init_arm.c
View File

@ -1,50 +0,0 @@
/*
* Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/arm/cpu.h"
#define FFT_FLOAT 0
#include "libavcodec/fft.h"
void ff_fft_fixed_calc_neon(FFTContext *s, FFTComplex *z);
void ff_mdct_fixed_calc_neon(FFTContext *s, FFTSample *o, const FFTSample *i);
void ff_mdct_fixed_calcw_neon(FFTContext *s, FFTDouble *o, const FFTSample *i);
av_cold void ff_fft_fixed_init_arm(FFTContext *s)
{
int cpu_flags = av_get_cpu_flags();
if (have_neon(cpu_flags)) {
s->fft_permutation = FF_FFT_PERM_SWAP_LSBS;
#if CONFIG_FFT
s->fft_calc = ff_fft_fixed_calc_neon;
#endif
#if CONFIG_MDCT
if (!s->inverse && s->nbits >= 3) {
s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE;
s->mdct_calc = ff_mdct_fixed_calc_neon;
s->mdct_calcw = ff_mdct_fixed_calcw_neon;
}
#endif
}
}

261
libavcodec/arm/fft_fixed_neon.S
View File

@ -1,261 +0,0 @@
/*
* Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/arm/asm.S"
.macro bflies d0, d1, r0, r1
vrev64.32 \r0, \d1 @ t5, t6, t1, t2
vhsub.s16 \r1, \d1, \r0 @ t1-t5, t2-t6, t5-t1, t6-t2
vhadd.s16 \r0, \d1, \r0 @ t1+t5, t2+t6, t5+t1, t6+t2
vext.16 \r1, \r1, \r1, #1 @ t2-t6, t5-t1, t6-t2, t1-t5
vtrn.32 \r0, \r1 @ t1+t5, t2+t6, t2-t6, t5-t1
@ t5, t6, t4, t3
vhsub.s16 \d1, \d0, \r0
vhadd.s16 \d0, \d0, \r0
.endm
.macro transform01 q0, q1, d3, c0, c1, r0, w0, w1
vrev32.16 \r0, \d3
vmull.s16 \w0, \d3, \c0
vmlal.s16 \w0, \r0, \c1
vshrn.s32 \d3, \w0, #15
bflies \q0, \q1, \w0, \w1
.endm
.macro transform2 d0, d1, d2, d3, q0, q1, c0, c1, c2, c3, \
r0, r1, w0, w1
vrev32.16 \r0, \d1
vrev32.16 \r1, \d3
vmull.s16 \w0, \d1, \c0
vmlal.s16 \w0, \r0, \c1
vmull.s16 \w1, \d3, \c2
vmlal.s16 \w1, \r1, \c3
vshrn.s32 \d1, \w0, #15
vshrn.s32 \d3, \w1, #15
bflies \q0, \q1, \w0, \w1
.endm
.macro fft4 d0, d1, r0, r1
vhsub.s16 \r0, \d0, \d1 @ t3, t4, t8, t7
vhsub.s16 \r1, \d1, \d0
vhadd.s16 \d0, \d0, \d1 @ t1, t2, t6, t5
vmov.i64 \d1, #0xffff00000000
vbit \r0, \r1, \d1
vrev64.16 \r1, \r0 @ t7, t8, t4, t3
vtrn.32 \r0, \r1 @ t3, t4, t7, t8
vtrn.32 \d0, \r0 @ t1, t2, t3, t4, t6, t5, t8, t7
vhsub.s16 \d1, \d0, \r0 @ r2, i2, r3, i1
vhadd.s16 \d0, \d0, \r0 @ r0, i0, r1, i3
.endm
.macro fft8 d0, d1, d2, d3, q0, q1, c0, c1, r0, r1, w0, w1
fft4 \d0, \d1, \r0, \r1
vtrn.32 \d0, \d1 @ z0, z2, z1, z3
vhadd.s16 \r0, \d2, \d3 @ t1, t2, t3, t4
vhsub.s16 \d3, \d2, \d3 @ z5, z7
vmov \d2, \r0
transform01 \q0, \q1, \d3, \c0, \c1, \r0, \w0, \w1
.endm
function fft4_neon
vld1.16 {d0-d1}, [r0]
fft4 d0, d1, d2, d3
vst1.16 {d0-d1}, [r0]
bx lr
endfunc
function fft8_neon
vld1.16 {d0-d3}, [r0,:128]
movrel r1, coefs
vld1.16 {d30}, [r1,:64]
vdup.16 d31, d30[0]
fft8 d0, d1, d2, d3, q0, q1, d31, d30, d20, d21, q8, q9
vtrn.32 d0, d1
vtrn.32 d2, d3
vst1.16 {d0-d3}, [r0,:128]
bx lr
endfunc
function fft16_neon
vld1.16 {d0-d3}, [r0,:128]!
vld1.16 {d4-d7}, [r0,:128]
movrel r1, coefs
sub r0, r0, #32
vld1.16 {d28-d31},[r1,:128]
vdup.16 d31, d28[0]
fft8 d0, d1, d2, d3, q0, q1, d31, d28, d20, d21, q8, q9
vswp d5, d6
fft4 q2, q3, q8, q9
vswp d5, d6
vtrn.32 q0, q1 @ z0, z4, z2, z6, z1, z5, z3, z7
vtrn.32 q2, q3 @ z8, z12,z10,z14,z9, z13,z11,z15
vswp d1, d2
vdup.16 d31, d28[0]
transform01 q0, q2, d5, d31, d28, d20, q8, q9
vdup.16 d26, d29[0]
vdup.16 d27, d30[0]
transform2 d2, d6, d3, d7, q1, q3, d26, d30, d27, d29, \
d20, d21, q8, q9
vtrn.32 q0, q1
vtrn.32 q2, q3
vst1.16 {d0-d3}, [r0,:128]!
vst1.16 {d4-d7}, [r0,:128]
bx lr
endfunc
function fft_pass_neon
push {r4,lr}
movrel lr, coefs + 24
vld1.16 {d30}, [lr,:64]
lsl r12, r2, #3
vmov d31, d30
add r3, r1, r2, lsl #2
mov lr, #-8
sub r3, r3, #2
mov r4, r0
vld1.16 {d27[]}, [r3,:16]
sub r3, r3, #6
vld1.16 {q0}, [r4,:128], r12
vld1.16 {q1}, [r4,:128], r12
vld1.16 {q2}, [r4,:128], r12
vld1.16 {q3}, [r4,:128], r12
vld1.16 {d28}, [r1,:64]!
vld1.16 {d29}, [r3,:64], lr
vswp d1, d2
vswp d5, d6
vtrn.32 d0, d1
vtrn.32 d4, d5
vdup.16 d25, d28[1]
vmul.s16 d27, d27, d31
transform01 q0, q2, d5, d25, d27, d20, q8, q9
b 2f
1:
mov r4, r0
vdup.16 d26, d29[0]
vld1.16 {q0}, [r4,:128], r12
vld1.16 {q1}, [r4,:128], r12
vld1.16 {q2}, [r4,:128], r12
vld1.16 {q3}, [r4,:128], r12
vld1.16 {d28}, [r1,:64]!
vld1.16 {d29}, [r3,:64], lr
vswp d1, d2
vswp d5, d6
vtrn.32 d0, d1
vtrn.32 d4, d5
vdup.16 d24, d28[0]
vdup.16 d25, d28[1]
vdup.16 d27, d29[3]
vmul.s16 q13, q13, q15
transform2 d0, d4, d1, d5, q0, q2, d24, d26, d25, d27, \
d16, d17, q9, q10
2:
vtrn.32 d2, d3
vtrn.32 d6, d7
vdup.16 d24, d28[2]
vdup.16 d26, d29[2]
vdup.16 d25, d28[3]
vdup.16 d27, d29[1]
vmul.s16 q13, q13, q15
transform2 d2, d6, d3, d7, q1, q3, d24, d26, d25, d27, \
d16, d17, q9, q10
vtrn.32 d0, d1
vtrn.32 d2, d3
vtrn.32 d4, d5
vtrn.32 d6, d7
vswp d1, d2
vswp d5, d6
mov r4, r0
vst1.16 {q0}, [r4,:128], r12
vst1.16 {q1}, [r4,:128], r12
vst1.16 {q2}, [r4,:128], r12
vst1.16 {q3}, [r4,:128], r12
add r0, r0, #16
subs r2, r2, #2
bgt 1b
pop {r4,pc}
endfunc
#define F_SQRT1_2 23170
#define F_COS_16_1 30274
#define F_COS_16_3 12540
const coefs, align=4
.short F_SQRT1_2, -F_SQRT1_2, -F_SQRT1_2, F_SQRT1_2
.short F_COS_16_1,-F_COS_16_1,-F_COS_16_1, F_COS_16_1
.short F_COS_16_3,-F_COS_16_3,-F_COS_16_3, F_COS_16_3
.short 1, -1, -1, 1
endconst
.macro def_fft n, n2, n4
function fft\n\()_neon
push {r4, lr}
mov r4, r0
bl fft\n2\()_neon
add r0, r4, #\n4*2*4
bl fft\n4\()_neon
add r0, r4, #\n4*3*4
bl fft\n4\()_neon
mov r0, r4
pop {r4, lr}
movrelx r1, X(ff_cos_\n\()_fixed)
mov r2, #\n4/2
b fft_pass_neon
endfunc
.endm
def_fft 32, 16, 8
def_fft 64, 32, 16
def_fft 128, 64, 32
def_fft 256, 128, 64
def_fft 512, 256, 128
def_fft 1024, 512, 256
def_fft 2048, 1024, 512
def_fft 4096, 2048, 1024
def_fft 8192, 4096, 2048
def_fft 16384, 8192, 4096
def_fft 32768, 16384, 8192
def_fft 65536, 32768, 16384
function ff_fft_fixed_calc_neon, export=1
ldr r2, [r0]
sub r2, r2, #2
movrel r3, fft_fixed_tab_neon
ldr r3, [r3, r2, lsl #2]
mov r0, r1
bx r3
endfunc
const fft_fixed_tab_neon, relocate=1
.word fft4_neon
.word fft8_neon
.word fft16_neon
.word fft32_neon
.word fft64_neon
.word fft128_neon
.word fft256_neon
.word fft512_neon
.word fft1024_neon
.word fft2048_neon
.word fft4096_neon
.word fft8192_neon
.word fft16384_neon
.word fft32768_neon
.word fft65536_neon
endconst

193
libavcodec/arm/mdct_fixed_neon.S
View File

@ -1,193 +0,0 @@
/*
* Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/arm/asm.S"
.macro prerot dst, rt
lsr r3, r6, #2 @ n4
add \rt, r4, r6, lsr #1 @ revtab + n4
add r9, r3, r3, lsl #1 @ n3
add r8, r7, r6 @ tcos + n4
add r3, r2, r6, lsr #1 @ in + n4
add r9, r2, r9, lsl #1 @ in + n3
sub r8, r8, #16
sub r10, r3, #16
sub r11, r9, #16
mov r12, #-16
1:
vld2.16 {d0,d1}, [r9, :128]!
vld2.16 {d2,d3}, [r11,:128], r12
vld2.16 {d4,d5}, [r3, :128]!
vld2.16 {d6,d7}, [r10,:128], r12
vld2.16 {d16,d17},[r7, :128]! @ cos, sin
vld2.16 {d18,d19},[r8, :128], r12
vrev64.16 q1, q1
vrev64.16 q3, q3
vrev64.16 q9, q9
vneg.s16 d0, d0
vneg.s16 d2, d2
vneg.s16 d16, d16
vneg.s16 d18, d18
vhsub.s16 d0, d0, d3 @ re
vhsub.s16 d4, d7, d4 @ im
vhsub.s16 d6, d6, d5
vhsub.s16 d2, d2, d1
vmull.s16 q10, d0, d16
vmlsl.s16 q10, d4, d17
vmull.s16 q11, d0, d17
vmlal.s16 q11, d4, d16
vmull.s16 q12, d6, d18
vmlsl.s16 q12, d2, d19
vmull.s16 q13, d6, d19
vmlal.s16 q13, d2, d18
vshrn.s32 d0, q10, #15
vshrn.s32 d1, q11, #15
vshrn.s32 d2, q12, #15
vshrn.s32 d3, q13, #15
vzip.16 d0, d1
vzip.16 d2, d3
ldrh lr, [r4], #2
ldrh r2, [\rt, #-2]!
add lr, \dst, lr, lsl #2
add r2, \dst, r2, lsl #2
vst1.32 {d0[0]}, [lr,:32]
vst1.32 {d2[0]}, [r2,:32]
ldrh lr, [r4], #2
ldrh r2, [\rt, #-2]!
add lr, \dst, lr, lsl #2
add r2, \dst, r2, lsl #2
vst1.32 {d0[1]}, [lr,:32]
vst1.32 {d2[1]}, [r2,:32]
ldrh lr, [r4], #2
ldrh r2, [\rt, #-2]!
add lr, \dst, lr, lsl #2
add r2, \dst, r2, lsl #2
vst1.32 {d1[0]}, [lr,:32]
vst1.32 {d3[0]}, [r2,:32]
ldrh lr, [r4], #2
ldrh r2, [\rt, #-2]!
add lr, \dst, lr, lsl #2
add r2, \dst, r2, lsl #2
vst1.32 {d1[1]}, [lr,:32]
vst1.32 {d3[1]}, [r2,:32]
subs r6, r6, #32
bgt 1b
.endm
function ff_mdct_fixed_calc_neon, export=1
push {r1,r4-r11,lr}
ldr r4, [r0, #8] @ revtab
ldr r6, [r0, #16] @ mdct_size; n
ldr r7, [r0, #24] @ tcos
prerot r1, r5
mov r4, r0
bl X(ff_fft_fixed_calc_neon)
pop {r5}
mov r12, #-16
ldr r6, [r4, #16] @ mdct_size; n
ldr r7, [r4, #24] @ tcos
add r5, r5, r6, lsr #1
add r7, r7, r6, lsr #1
sub r1, r5, #16
sub r2, r7, #16
1:
vld2.16 {d4,d5}, [r7,:128]!
vld2.16 {d6,d7}, [r2,:128], r12
vld2.16 {d0,d1}, [r5,:128]
vld2.16 {d2,d3}, [r1,:128]
vrev64.16 q3, q3
vrev64.16 q1, q1
vneg.s16 q3, q3
vneg.s16 q2, q2
vmull.s16 q11, d2, d6
vmlal.s16 q11, d3, d7
vmull.s16 q8, d0, d5
vmlsl.s16 q8, d1, d4
vmull.s16 q9, d0, d4
vmlal.s16 q9, d1, d5
vmull.s16 q10, d2, d7
vmlsl.s16 q10, d3, d6
vshrn.s32 d0, q11, #15
vshrn.s32 d1, q8, #15
vshrn.s32 d2, q9, #15
vshrn.s32 d3, q10, #15
vrev64.16 q0, q0
vst2.16 {d2,d3}, [r5,:128]!
vst2.16 {d0,d1}, [r1,:128], r12
subs r6, r6, #32
bgt 1b
pop {r4-r11,pc}
endfunc
function ff_mdct_fixed_calcw_neon, export=1
push {r1,r4-r11,lr}
ldrd r4, r5, [r0, #8] @ revtab, tmp_buf
ldr r6, [r0, #16] @ mdct_size; n
ldr r7, [r0, #24] @ tcos
prerot r5, r1
mov r4, r0
mov r1, r5
bl X(ff_fft_fixed_calc_neon)
pop {r7}
mov r12, #-16
ldr r6, [r4, #16] @ mdct_size; n
ldr r9, [r4, #24] @ tcos
add r5, r5, r6, lsr #1
add r7, r7, r6
add r9, r9, r6, lsr #1
sub r3, r5, #16
sub r1, r7, #16
sub r2, r9, #16
1:
vld2.16 {d4,d5}, [r9,:128]!
vld2.16 {d6,d7}, [r2,:128], r12
vld2.16 {d0,d1}, [r5,:128]!
vld2.16 {d2,d3}, [r3,:128], r12
vrev64.16 q3, q3
vrev64.16 q1, q1
vneg.s16 q3, q3
vneg.s16 q2, q2
vmull.s16 q8, d2, d6
vmlal.s16 q8, d3, d7
vmull.s16 q9, d0, d5
vmlsl.s16 q9, d1, d4
vmull.s16 q10, d0, d4
vmlal.s16 q10, d1, d5
vmull.s16 q11, d2, d7
vmlsl.s16 q11, d3, d6
vrev64.32 q8, q8
vrev64.32 q9, q9
vst2.32 {q10,q11},[r7,:128]!
vst2.32 {d16,d18},[r1,:128], r12
vst2.32 {d17,d19},[r1,:128], r12
subs r6, r6, #32
bgt 1b
pop {r4-r11,pc}
endfunc

29
libavcodec/fft-internal.h
View File

@ -34,7 +34,7 @@
(dim) = (are) * (bim) + (aim) * (bre); \
} while (0)
#else
#else /* FFT_FLOAT */
#define SCALE_FLOAT(a, bits) lrint((a) * (double)(1 << (bits)))
@ -52,33 +52,6 @@
#define FIX15(a) av_clip(SCALE_FLOAT(a, 31), -2147483647, 2147483647)
#else /* FFT_FIXED_32 */
#include "fft.h"
#include "mathops.h"
void ff_mdct_calcw_c(FFTContext *s, FFTDouble *output, const FFTSample *input);
#define FIX15(a) av_clip(SCALE_FLOAT(a, 15), -32767, 32767)
#define sqrthalf ((int16_t)((1<<15)*M_SQRT1_2))
#define BF(x, y, a, b) do { \
x = (a - b) >> 1; \
y = (a + b) >> 1; \
} while (0)
#define CMULS(dre, dim, are, aim, bre, bim, sh) do { \
(dre) = (MUL16(are, bre) - MUL16(aim, bim)) >> sh; \
(dim) = (MUL16(are, bim) + MUL16(aim, bre)) >> sh; \
} while (0)
#define CMUL(dre, dim, are, aim, bre, bim) \
CMULS(dre, dim, are, aim, bre, bim, 15)
#define CMULL(dre, dim, are, aim, bre, bim) \
CMULS(dre, dim, are, aim, bre, bim, 0)
#endif /* FFT_FIXED_32 */
#endif /* FFT_FLOAT */

9
libavcodec/fft.h
View File

@ -52,12 +52,6 @@ typedef float FFTDouble;
typedef int32_t FFTSample;
#else /* FFT_FIXED_32 */
#define FFT_NAME(x) x ## _fixed
typedef int16_t FFTSample;
#endif /* FFT_FIXED_32 */
typedef struct FFTComplex {
@ -108,7 +102,6 @@ struct FFTContext {
void (*imdct_calc)(struct FFTContext *s, FFTSample *output, const FFTSample *input);
void (*imdct_half)(struct FFTContext *s, FFTSample *output, const FFTSample *input);
void (*mdct_calc)(struct FFTContext *s, FFTSample *output, const FFTSample *input);
void (*mdct_calcw)(struct FFTContext *s, FFTDouble *output, const FFTSample *input);
enum fft_permutation_type fft_permutation;
enum mdct_permutation_type mdct_permutation;
uint32_t *revtab32;
@ -163,8 +156,6 @@ void ff_fft_init_arm(FFTContext *s);
void ff_fft_init_mips(FFTContext *s);
void ff_fft_init_ppc(FFTContext *s);
void ff_fft_fixed_init_arm(FFTContext *s);
void ff_fft_end(FFTContext *s);
#define ff_mdct_init FFT_NAME(ff_mdct_init)

21
libavcodec/fft_fixed.c
View File

@ -1,21 +0,0 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define FFT_FLOAT 0
#define FFT_FIXED_32 0
#include "fft_template.c"

4
libavcodec/fft_template.c
View File

@ -236,11 +236,7 @@ av_cold int ff_fft_init(FFTContext *s, int nbits, int inverse)
if (ARCH_ARM) ff_fft_init_arm(s);
if (ARCH_PPC) ff_fft_init_ppc(s);
if (ARCH_X86) ff_fft_init_x86(s);
if (CONFIG_MDCT) s->mdct_calcw = s->mdct_calc;
if (HAVE_MIPSFPU) ff_fft_init_mips(s);
#else
if (CONFIG_MDCT) s->mdct_calcw = ff_mdct_calcw_c;
if (ARCH_ARM) ff_fft_fixed_init_arm(s);
#endif
for(j=4; j<=nbits; j++) {
ff_init_ff_cos_tabs(j);

65
libavcodec/mdct_fixed.c
View File

@ -1,65 +0,0 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define FFT_FLOAT 0
#define FFT_FIXED_32 0
#include "mdct_template.c"
/* same as ff_mdct_calcw_c with double-width unscaled output */
void ff_mdct_calcw_c(FFTContext *s, FFTDouble *out, const FFTSample *input)
{
int i, j, n, n8, n4, n2, n3;
FFTDouble re, im;
const uint16_t *revtab = s->revtab;
const FFTSample *tcos = s->tcos;
const FFTSample *tsin = s->tsin;
FFTComplex *x = s->tmp_buf;
FFTDComplex *o = (FFTDComplex *)out;
n = 1 << s->mdct_bits;
n2 = n >> 1;
n4 = n >> 2;
n8 = n >> 3;
n3 = 3 * n4;
/* pre rotation */
for(i=0;i<n8;i++) {
re = RSCALE(-input[2*i+n3], - input[n3-1-2*i]);
im = RSCALE(-input[n4+2*i], + input[n4-1-2*i]);
j = revtab[i];
CMUL(x[j].re, x[j].im, re, im, -tcos[i], tsin[i]);
re = RSCALE( input[2*i] , - input[n2-1-2*i]);
im = RSCALE(-input[n2+2*i], - input[ n-1-2*i]);
j = revtab[n8 + i];
CMUL(x[j].re, x[j].im, re, im, -tcos[n8 + i], tsin[n8 + i]);
}
s->fft_calc(s, x);
/* post rotation */
for(i=0;i<n8;i++) {
FFTDouble r0, i0, r1, i1;
CMULL(i1, r0, x[n8-i-1].re, x[n8-i-1].im, -tsin[n8-i-1], -tcos[n8-i-1]);
CMULL(i0, r1, x[n8+i ].re, x[n8+i ].im, -tsin[n8+i ], -tcos[n8+i ]);
o[n8-i-1].re = r0;
o[n8-i-1].im = i0;
o[n8+i ].re = r1;
o[n8+i ].im = i1;
}
}

1
libavcodec/tests/.gitignore vendored
View File

@ -5,7 +5,6 @@
/codec_desc
/dct
/fft
/fft-fixed
/fft-fixed32
/golomb
/h264_levels

21
libavcodec/tests/fft-fixed.c
View File

@ -1,21 +0,0 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define FFT_FLOAT 0
#define AVFFT 0
#include "fft.c"

30
tests/fate/fft.mak
View File

@ -26,27 +26,7 @@ FATE_FFT_ALL = $(FATE_DCT-yes) $(FATE_FFT-yes) $(FATE_MDCT-yes) $(FATE_RDFT-yes)
$(FATE_FFT_ALL): libavcodec/tests/fft$(EXESUF)
$(FATE_FFT_ALL): CMD = run libavcodec/tests/fft$(EXESUF) $(CPUFLAGS:%=-c%) $(ARGS)
define DEF_FFT_FIXED
FATE_FFT_FIXED-$(CONFIG_FFT) += fate-fft-fixed-$(1) fate-ifft-fixed-$(1)
FATE_MDCT_FIXED-$(CONFIG_MDCT) += fate-mdct-fixed-$(1) fate-imdct-fixed-$(1)
fate-fft-fixed-$(1): ARGS = -n$(1)
fate-ifft-fixed-$(1): ARGS = -n$(1) -i
fate-mdct-fixed-$(1): ARGS = -n$(1) -m
fate-imdct-fixed-$(1): ARGS = -n$(1) -m -i
endef
$(foreach N, 4 5 6 7 8 9 10 11 12, $(eval $(call DEF_FFT_FIXED,$(N))))
fate-fft-fixed: $(FATE_FFT_FIXED-yes)
fate-mdct-fixed: $(FATE_MDCT_FIXED-yes)
FATE_FFT_FIXED_ALL = $(FATE_FFT_FIXED-yes) $(FATE_MDCT_FIXED-yes)
$(FATE_FFT_FIXED_ALL): libavcodec/tests/fft-fixed$(EXESUF)
$(FATE_FFT_FIXED_ALL): CMD = run libavcodec/tests/fft-fixed$(EXESUF) $(CPUFLAGS:%=-c%) $(ARGS)
$(FATE_FFT_ALL) $(FATE_FFT_FIXED_ALL): CMP = null
$(FATE_FFT_ALL): CMP = null
define DEF_FFT_FIXED32
FATE_FFT_FIXED32 += fate-fft-fixed32-$(1) fate-ifft-fixed32-$(1) \
@ -95,9 +75,9 @@ $(FATE_AV_FFT_ALL): CMD = run libavcodec/tests/avfft$(EXESUF) $(CPUFLAGS:%=-c%)
$(FATE_AV_FFT_ALL): CMP = null
fate-dct: fate-dct-float
fate-fft: fate-fft-float fate-fft-fixed fate-fft-fixed32
fate-mdct: fate-mdct-float fate-mdct-fixed
fate-fft: fate-fft-float fate-fft-fixed32
fate-mdct: fate-mdct-float
fate-rdft: fate-rdft-float
FATE-$(call ALLYES, AVCODEC FFT MDCT) += $(FATE_FFT_ALL) $(FATE_FFT_FIXED_ALL) $(FATE_FFT_FIXED32) $(FATE_AV_FFT_ALL)
fate-fft-all: $(FATE_FFT_ALL) $(FATE_FFT_FIXED_ALL) $(FATE_FFT_FIXED32) $(FATE_AV_FFT_ALL)
FATE-$(call ALLYES, AVCODEC FFT MDCT) += $(FATE_FFT_ALL) $(FATE_FFT_FIXED32) $(FATE_AV_FFT_ALL)
fate-fft-all: $(FATE_FFT_ALL) $(FATE_FFT_FIXED32) $(FATE_AV_FFT_ALL)