[FFmpeg-cvslog] ppc: Fix the bug of fft for little endian environment on POWER7 and later
Rong Yan
git at videolan.org
Thu Jun 19 01:14:11 CEST 2014
ffmpeg | branch: master | Rong Yan <rongyan236 at gmail.com> | Wed Jun 18 04:51:35 2014 -0400| [ab12373956e92b865bced9b05b12971f062cfd3e] | committer: Michael Niedermayer
ppc: Fix the bug of fft for little endian environment on POWER7 and later
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ab12373956e92b865bced9b05b12971f062cfd3e
---
configure | 15 +-
libavcodec/ppc/Makefile | 1 +
libavcodec/ppc/fft_altivec.c | 12 +
libavcodec/ppc/fft_vsx.c | 227 ++++++++++++
libavcodec/ppc/fft_vsx.h | 830 ++++++++++++++++++++++++++++++++++++++++++
5 files changed, 1084 insertions(+), 1 deletion(-)
diff --git a/configure b/configure
index d1eb8da..75740f9 100755
--- a/configure
+++ b/configure
@@ -1548,6 +1548,7 @@ ARCH_EXT_LIST_PPC="
dcbzl
ldbrx
ppc4xx
+ vsx
"
ARCH_EXT_LIST_X86="
@@ -1933,6 +1934,7 @@ mipsdspr2_deps="mips"
altivec_deps="ppc"
ppc4xx_deps="ppc"
+vsx_deps="ppc"
cpunop_deps="i686"
x86_64_select="i686"
@@ -3691,6 +3693,7 @@ elif enabled mips; then
elif enabled ppc; then
disable ldbrx
+ disable vsx
case $(tolower $cpu) in
601|ppc601|powerpc601)
@@ -3718,7 +3721,7 @@ elif enabled ppc; then
g5|970|ppc970|powerpc970)
cpuflags="-mcpu=970"
;;
- power[3-7]*)
+ power[3-8]*)
cpuflags="-mcpu=$cpu"
;;
cell)
@@ -4286,6 +4289,12 @@ unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
EOF
od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
+if [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
+ if ! enabled bigendian ;then
+ enable vsx
+ fi
+fi
+
if enabled asm; then
enabled arm && nogas=die
@@ -4415,6 +4424,9 @@ EOF
enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
fi
+ if enabled vsx; then
+ check_cflags -mvsx
+ fi
elif enabled x86; then
check_builtin rdtsc intrin.h "__rdtsc()"
@@ -5256,6 +5268,7 @@ fi
if enabled ppc; then
echo "AltiVec enabled ${altivec-no}"
echo "PPC 4xx optimizations ${ppc4xx-no}"
+ echo "PPC VSX optimizations ${vsx-no}"
echo "dcbzl available ${dcbzl-no}"
fi
echo "debug symbols ${debug-no}"
diff --git a/libavcodec/ppc/Makefile b/libavcodec/ppc/Makefile
index b04aa0e..bec7845 100644
--- a/libavcodec/ppc/Makefile
+++ b/libavcodec/ppc/Makefile
@@ -26,4 +26,5 @@ ALTIVEC-OBJS-$(CONFIG_DSPUTIL) += ppc/dsputil_altivec.o \
ppc/int_altivec.o \
FFT-OBJS-$(HAVE_GNU_AS) += ppc/fft_altivec_s.o
+FFT-OBJS-$(HAVE_VSX) += ppc/fft_vsx.o
ALTIVEC-OBJS-$(CONFIG_FFT) += $(FFT-OBJS-yes)
diff --git a/libavcodec/ppc/fft_altivec.c b/libavcodec/ppc/fft_altivec.c
index 8d7fd46..675fa33 100644
--- a/libavcodec/ppc/fft_altivec.c
+++ b/libavcodec/ppc/fft_altivec.c
@@ -36,8 +36,12 @@
* It also assumes all FFTComplex are 8 bytes-aligned pairs of floats.
*/
+#if HAVE_VSX
+#include "fft_vsx.h"
+#else
void ff_fft_calc_altivec(FFTContext *s, FFTComplex *z);
void ff_fft_calc_interleave_altivec(FFTContext *s, FFTComplex *z);
+#endif
#if HAVE_GNU_AS && HAVE_ALTIVEC
static void imdct_half_altivec(FFTContext *s, FFTSample *output, const FFTSample *input)
@@ -94,7 +98,11 @@ static void imdct_half_altivec(FFTContext *s, FFTSample *output, const FFTSample
k--;
} while(k >= 0);
+#if HAVE_VSX
+ ff_fft_calc_vsx(s, (FFTComplex*)output);
+#else
ff_fft_calc_altivec(s, (FFTComplex*)output);
+#endif
/* post rotation + reordering */
j = -n32;
@@ -147,7 +155,11 @@ av_cold void ff_fft_init_ppc(FFTContext *s)
if (!PPC_ALTIVEC(av_get_cpu_flags()))
return;
+#if HAVE_VSX
+ s->fft_calc = ff_fft_calc_interleave_vsx;
+#else
s->fft_calc = ff_fft_calc_interleave_altivec;
+#endif
if (s->mdct_bits >= 5) {
s->imdct_calc = imdct_calc_altivec;
s->imdct_half = imdct_half_altivec;
diff --git a/libavcodec/ppc/fft_vsx.c b/libavcodec/ppc/fft_vsx.c
new file mode 100644
index 0000000..e92975f
--- /dev/null
+++ b/libavcodec/ppc/fft_vsx.c
@@ -0,0 +1,227 @@
+/*
+ * FFT transform, optimized with VSX built-in functions
+ * Copyright (c) 2014 Rong Yan
+ *
+ * This algorithm (though not any of the implementation details) is
+ * based on libdjbfft by D. J. Bernstein.
+ *
+ * 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 "config.h"
+#include "libavutil/cpu.h"
+#include "libavutil/ppc/types_altivec.h"
+#include "libavutil/ppc/util_altivec.h"
+#include "libavcodec/fft.h"
+#include "libavcodec/fft-internal.h"
+#include "fft_vsx.h"
+
+#if HAVE_VSX
+
+static void fft32_vsx_interleave(FFTComplex *z)
+{
+ fft16_vsx_interleave(z);
+ fft8_vsx_interleave(z+16);
+ fft8_vsx_interleave(z+24);
+ pass_vsx_interleave(z,ff_cos_32,4);
+}
+
+static void fft64_vsx_interleave(FFTComplex *z)
+{
+ fft32_vsx_interleave(z);
+ fft16_vsx_interleave(z+32);
+ fft16_vsx_interleave(z+48);
+ pass_vsx_interleave(z,ff_cos_64, 8);
+}
+static void fft128_vsx_interleave(FFTComplex *z)
+{
+ fft64_vsx_interleave(z);
+ fft32_vsx_interleave(z+64);
+ fft32_vsx_interleave(z+96);
+ pass_vsx_interleave(z,ff_cos_128,16);
+}
+static void fft256_vsx_interleave(FFTComplex *z)
+{
+ fft128_vsx_interleave(z);
+ fft64_vsx_interleave(z+128);
+ fft64_vsx_interleave(z+192);
+ pass_vsx_interleave(z,ff_cos_256,32);
+}
+static void fft512_vsx_interleave(FFTComplex *z)
+{
+ fft256_vsx_interleave(z);
+ fft128_vsx_interleave(z+256);
+ fft128_vsx_interleave(z+384);
+ pass_vsx_interleave(z,ff_cos_512,64);
+}
+static void fft1024_vsx_interleave(FFTComplex *z)
+{
+ fft512_vsx_interleave(z);
+ fft256_vsx_interleave(z+512);
+ fft256_vsx_interleave(z+768);
+ pass_vsx_interleave(z,ff_cos_1024,128);
+
+}
+static void fft2048_vsx_interleave(FFTComplex *z)
+{
+ fft1024_vsx_interleave(z);
+ fft512_vsx_interleave(z+1024);
+ fft512_vsx_interleave(z+1536);
+ pass_vsx_interleave(z,ff_cos_2048,256);
+}
+static void fft4096_vsx_interleave(FFTComplex *z)
+{
+ fft2048_vsx_interleave(z);
+ fft1024_vsx_interleave(z+2048);
+ fft1024_vsx_interleave(z+3072);
+ pass_vsx_interleave(z,ff_cos_4096, 512);
+}
+static void fft8192_vsx_interleave(FFTComplex *z)
+{
+ fft4096_vsx_interleave(z);
+ fft2048_vsx_interleave(z+4096);
+ fft2048_vsx_interleave(z+6144);
+ pass_vsx_interleave(z,ff_cos_8192,1024);
+}
+static void fft16384_vsx_interleave(FFTComplex *z)
+{
+ fft8192_vsx_interleave(z);
+ fft4096_vsx_interleave(z+8192);
+ fft4096_vsx_interleave(z+12288);
+ pass_vsx_interleave(z,ff_cos_16384,2048);
+}
+static void fft32768_vsx_interleave(FFTComplex *z)
+{
+ fft16384_vsx_interleave(z);
+ fft8192_vsx_interleave(z+16384);
+ fft8192_vsx_interleave(z+24576);
+ pass_vsx_interleave(z,ff_cos_32768,4096);
+}
+static void fft65536_vsx_interleave(FFTComplex *z)
+{
+ fft32768_vsx_interleave(z);
+ fft16384_vsx_interleave(z+32768);
+ fft16384_vsx_interleave(z+49152);
+ pass_vsx_interleave(z,ff_cos_65536,8192);
+}
+
+static void fft32_vsx(FFTComplex *z)
+{
+ fft16_vsx(z);
+ fft8_vsx(z+16);
+ fft8_vsx(z+24);
+ pass_vsx(z,ff_cos_32,4);
+}
+
+static void fft64_vsx(FFTComplex *z)
+{
+ fft32_vsx(z);
+ fft16_vsx(z+32);
+ fft16_vsx(z+48);
+ pass_vsx(z,ff_cos_64, 8);
+}
+static void fft128_vsx(FFTComplex *z)
+{
+ fft64_vsx(z);
+ fft32_vsx(z+64);
+ fft32_vsx(z+96);
+ pass_vsx(z,ff_cos_128,16);
+}
+static void fft256_vsx(FFTComplex *z)
+{
+ fft128_vsx(z);
+ fft64_vsx(z+128);
+ fft64_vsx(z+192);
+ pass_vsx(z,ff_cos_256,32);
+}
+static void fft512_vsx(FFTComplex *z)
+{
+ fft256_vsx(z);
+ fft128_vsx(z+256);
+ fft128_vsx(z+384);
+ pass_vsx(z,ff_cos_512,64);
+}
+static void fft1024_vsx(FFTComplex *z)
+{
+ fft512_vsx(z);
+ fft256_vsx(z+512);
+ fft256_vsx(z+768);
+ pass_vsx(z,ff_cos_1024,128);
+
+}
+static void fft2048_vsx(FFTComplex *z)
+{
+ fft1024_vsx(z);
+ fft512_vsx(z+1024);
+ fft512_vsx(z+1536);
+ pass_vsx(z,ff_cos_2048,256);
+}
+static void fft4096_vsx(FFTComplex *z)
+{
+ fft2048_vsx(z);
+ fft1024_vsx(z+2048);
+ fft1024_vsx(z+3072);
+ pass_vsx(z,ff_cos_4096, 512);
+}
+static void fft8192_vsx(FFTComplex *z)
+{
+ fft4096_vsx(z);
+ fft2048_vsx(z+4096);
+ fft2048_vsx(z+6144);
+ pass_vsx(z,ff_cos_8192,1024);
+}
+static void fft16384_vsx(FFTComplex *z)
+{
+ fft8192_vsx(z);
+ fft4096_vsx(z+8192);
+ fft4096_vsx(z+12288);
+ pass_vsx(z,ff_cos_16384,2048);
+}
+static void fft32768_vsx(FFTComplex *z)
+{
+ fft16384_vsx(z);
+ fft8192_vsx(z+16384);
+ fft8192_vsx(z+24576);
+ pass_vsx(z,ff_cos_32768,4096);
+}
+static void fft65536_vsx(FFTComplex *z)
+{
+ fft32768_vsx(z);
+ fft16384_vsx(z+32768);
+ fft16384_vsx(z+49152);
+ pass_vsx(z,ff_cos_65536,8192);
+}
+
+static void (* const fft_dispatch_vsx[])(FFTComplex*) = {
+ fft4_vsx, fft8_vsx, fft16_vsx, fft32_vsx, fft64_vsx, fft128_vsx, fft256_vsx, fft512_vsx, fft1024_vsx,
+ fft2048_vsx, fft4096_vsx, fft8192_vsx, fft16384_vsx, fft32768_vsx, fft65536_vsx,
+};
+static void (* const fft_dispatch_vsx_interleave[])(FFTComplex*) = {
+ fft4_vsx_interleave, fft8_vsx_interleave, fft16_vsx_interleave, fft32_vsx_interleave, fft64_vsx_interleave,
+ fft128_vsx_interleave, fft256_vsx_interleave, fft512_vsx_interleave, fft1024_vsx_interleave,
+ fft2048_vsx_interleave, fft4096_vsx_interleave, fft8192_vsx_interleave, fft16384_vsx_interleave, fft32768_vsx_interleave, fft65536_vsx_interleave,
+};
+void ff_fft_calc_interleave_vsx(FFTContext *s, FFTComplex *z)
+{
+ fft_dispatch_vsx_interleave[s->nbits-2](z);
+}
+void ff_fft_calc_vsx(FFTContext *s, FFTComplex *z)
+{
+ fft_dispatch_vsx[s->nbits-2](z);
+}
+#endif /* HAVE_VSX */
diff --git a/libavcodec/ppc/fft_vsx.h b/libavcodec/ppc/fft_vsx.h
new file mode 100644
index 0000000..a85475d
--- /dev/null
+++ b/libavcodec/ppc/fft_vsx.h
@@ -0,0 +1,830 @@
+#ifndef AVCODEC_PPC_FFT_VSX_H
+#define AVCODEC_PPC_FFT_VSX_H
+/*
+ * FFT transform, optimized with VSX built-in functions
+ * Copyright (c) 2014 Rong Yan Copyright (c) 2009 Loren Merritt
+ *
+ * This algorithm (though not any of the implementation details) is
+ * based on libdjbfft by D. J. Bernstein, and fft_altivec_s.S.
+ *
+ * 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 "config.h"
+#include "libavutil/cpu.h"
+#include "libavutil/ppc/types_altivec.h"
+#include "libavutil/ppc/util_altivec.h"
+#include "libavcodec/fft.h"
+#include "libavcodec/fft-internal.h"
+
+#if HAVE_VSX
+
+void ff_fft_calc_interleave_vsx(FFTContext *s, FFTComplex *z);
+void ff_fft_calc_vsx(FFTContext *s, FFTComplex *z);
+
+
+#define byte_2complex (2*sizeof(FFTComplex))
+#define byte_4complex (4*sizeof(FFTComplex))
+#define byte_6complex (6*sizeof(FFTComplex))
+#define byte_8complex (8*sizeof(FFTComplex))
+#define byte_10complex (10*sizeof(FFTComplex))
+#define byte_12complex (12*sizeof(FFTComplex))
+#define byte_14complex (14*sizeof(FFTComplex))
+
+inline static void pass_vsx_interleave(FFTComplex *z, const FFTSample *wre, unsigned int n)
+{
+ int o1 = n<<1;
+ int o2 = n<<2;
+ int o3 = o1+o2;
+ int i1, i2, i3;
+ FFTSample* out = (FFTSample*)z;
+ const FFTSample *wim = wre+o1;
+ vec_f vz0, vzo1, vzo2, vzo3;
+ vec_f x0, x1, x2, x3;
+ vec_f x4, x5, x6, x7;
+ vec_f x8, x9, x10, x11;
+ vec_f x12, x13, x14, x15;
+ vec_f x16, x17, x18, x19;
+ vec_f x20, x21, x22, x23;
+ vec_f vz0plus1, vzo1plus1, vzo2plus1, vzo3plus1;
+ vec_f y0, y1, y2, y3;
+ vec_f y4, y5, y8, y9;
+ vec_f y10, y13, y14, y15;
+ vec_f y16, y17, y18, y19;
+ vec_f y20, y21, y22, y23;
+ vec_f wr1, wi1, wr0, wi0;
+ vec_f wr2, wi2, wr3, wi3;
+ vec_f xmulwi0, xmulwi1, ymulwi2, ymulwi3;
+
+ n = n-2;
+ i1 = o1*sizeof(FFTComplex);
+ i2 = o2*sizeof(FFTComplex);
+ i3 = o3*sizeof(FFTComplex);
+ vzo2 = vec_ld(i2, &(out[0])); // zo2.r zo2.i z(o2+1).r z(o2+1).i
+ vzo2plus1 = vec_ld(i2+16, &(out[0]));
+ vzo3 = vec_ld(i3, &(out[0])); // zo3.r zo3.i z(o3+1).r z(o3+1).i
+ vzo3plus1 = vec_ld(i3+16, &(out[0]));
+ vz0 = vec_ld(0, &(out[0])); // z0.r z0.i z1.r z1.i
+ vz0plus1 = vec_ld(16, &(out[0]));
+ vzo1 = vec_ld(i1, &(out[0])); // zo1.r zo1.i z(o1+1).r z(o1+1).i
+ vzo1plus1 = vec_ld(i1+16, &(out[0]));
+
+ x0 = vec_add(vzo2, vzo3);
+ x1 = vec_sub(vzo2, vzo3);
+ y0 = vec_add(vzo2plus1, vzo3plus1);
+ y1 = vec_sub(vzo2plus1, vzo3plus1);
+
+ wr1 = vec_splats(wre[1]);
+ wi1 = vec_splats(wim[-1]);
+ wi2 = vec_splats(wim[-2]);
+ wi3 = vec_splats(wim[-3]);
+ wr2 = vec_splats(wre[2]);
+ wr3 = vec_splats(wre[3]);
+
+ x2 = vec_perm(x0, x1, vcprm(2,s2,3,s3));
+ x3 = vec_perm(x0, x1, vcprm(s3,3,s2,2));
+
+ y4 = vec_perm(y0, y1, vcprm(s1,1,s0,0));
+ y5 = vec_perm(y0, y1, vcprm(s3,3,s2,2));
+ y2 = vec_perm(y0, y1, vcprm(0,s0,1,s1));
+ y3 = vec_perm(y0, y1, vcprm(2,s2,3,s3));
+
+ ymulwi2 = vec_mul(y4, wi2);
+ ymulwi3 = vec_mul(y5, wi3);
+ x4 = vec_mul(x2, wr1);
+ x5 = vec_mul(x3, wi1);
+ y8 = vec_madd(y2, wr2, ymulwi2);
+ y9 = vec_msub(y2, wr2, ymulwi2);
+ x6 = vec_add(x4, x5);
+ x7 = vec_sub(x4, x5);
+ y13 = vec_madd(y3, wr3, ymulwi3);
+ y14 = vec_msub(y3, wr3, ymulwi3);
+
+ x8 = vec_perm(x6, x7, vcprm(0,1,s2,s3));
+ y10 = vec_perm(y8, y9, vcprm(0,1,s2,s3));
+ y15 = vec_perm(y13, y14, vcprm(0,1,s2,s3));
+
+ x9 = vec_perm(x0, x8, vcprm(0,1,s0,s2));
+ x10 = vec_perm(x1, x8, vcprm(1,0,s3,s1));
+
+ y16 = vec_perm(y10, y15, vcprm(0,2,s0,s2));
+ y17 = vec_perm(y10, y15, vcprm(3,1,s3,s1));
+
+ x11 = vec_add(vz0, x9);
+ x12 = vec_sub(vz0, x9);
+ x13 = vec_add(vzo1, x10);
+ x14 = vec_sub(vzo1, x10);
+
+ y18 = vec_add(vz0plus1, y16);
+ y19 = vec_sub(vz0plus1, y16);
+ y20 = vec_add(vzo1plus1, y17);
+ y21 = vec_sub(vzo1plus1, y17);
+
+ x15 = vec_perm(x13, x14, vcprm(0,s1,2,s3));
+ x16 = vec_perm(x13, x14, vcprm(s0,1,s2,3));
+ y22 = vec_perm(y20, y21, vcprm(0,s1,2,s3));
+ y23 = vec_perm(y20, y21, vcprm(s0,1,s2,3));
+
+
+ vec_st(x11, 0, &(out[0]));
+ vec_st(y18, 16, &(out[0]));
+ vec_st(x15, i1, &(out[0]));
+ vec_st(y22, i1+16, &(out[0]));
+ vec_st(x12, i2, &(out[0]));
+ vec_st(y19, i2+16, &(out[0]));
+ vec_st(x16, i3, &(out[0]));
+ vec_st(y23, i3+16, &(out[0]));
+
+ do {
+ out += 8;
+ wre += 4;
+ wim -= 4;
+ wr0 = vec_splats(wre[0]);
+ wr1 = vec_splats(wre[1]);
+ wi0 = vec_splats(wim[0]);
+ wi1 = vec_splats(wim[-1]);
+
+ wr2 = vec_splats(wre[2]);
+ wr3 = vec_splats(wre[3]);
+ wi2 = vec_splats(wim[-2]);
+ wi3 = vec_splats(wim[-3]);
+
+ vzo2 = vec_ld(i2, &(out[0])); // zo2.r zo2.i z(o2+1).r z(o2+1).i
+ vzo2plus1 = vec_ld(i2+16, &(out[0]));
+ vzo3 = vec_ld(i3, &(out[0])); // zo3.r zo3.i z(o3+1).r z(o3+1).i
+ vzo3plus1 = vec_ld(i3+16, &(out[0]));
+ vz0 = vec_ld(0, &(out[0])); // z0.r z0.i z1.r z1.i
+ vz0plus1 = vec_ld(16, &(out[0]));
+ vzo1 = vec_ld(i1, &(out[0])); // zo1.r zo1.i z(o1+1).r z(o1+1).i
+ vzo1plus1 = vec_ld(i1+16, &(out[0]));
+
+ x0 = vec_add(vzo2, vzo3);
+ x1 = vec_sub(vzo2, vzo3);
+
+ y0 = vec_add(vzo2plus1, vzo3plus1);
+ y1 = vec_sub(vzo2plus1, vzo3plus1);
+
+ x4 = vec_perm(x0, x1, vcprm(s1,1,s0,0));
+ x5 = vec_perm(x0, x1, vcprm(s3,3,s2,2));
+ x2 = vec_perm(x0, x1, vcprm(0,s0,1,s1));
+ x3 = vec_perm(x0, x1, vcprm(2,s2,3,s3));
+
+ y2 = vec_perm(y0, y1, vcprm(0,s0,1,s1));
+ y3 = vec_perm(y0, y1, vcprm(2,s2,3,s3));
+ xmulwi0 = vec_mul(x4, wi0);
+ xmulwi1 = vec_mul(x5, wi1);
+
+ y4 = vec_perm(y0, y1, vcprm(s1,1,s0,0));
+ y5 = vec_perm(y0, y1, vcprm(s3,3,s2,2));
+
+ x8 = vec_madd(x2, wr0, xmulwi0);
+ x9 = vec_msub(x2, wr0, xmulwi0);
+ ymulwi2 = vec_mul(y4, wi2);
+ ymulwi3 = vec_mul(y5, wi3);
+
+ x13 = vec_madd(x3, wr1, xmulwi1);
+ x14 = vec_msub(x3, wr1, xmulwi1);
+
+ y8 = vec_madd(y2, wr2, ymulwi2);
+ y9 = vec_msub(y2, wr2, ymulwi2);
+ y13 = vec_madd(y3, wr3, ymulwi3);
+ y14 = vec_msub(y3, wr3, ymulwi3);
+
+ x10 = vec_perm(x8, x9, vcprm(0,1,s2,s3));
+ x15 = vec_perm(x13, x14, vcprm(0,1,s2,s3));
+
+ y10 = vec_perm(y8, y9, vcprm(0,1,s2,s3));
+ y15 = vec_perm(y13, y14, vcprm(0,1,s2,s3));
+
+ x16 = vec_perm(x10, x15, vcprm(0,2,s0,s2));
+ x17 = vec_perm(x10, x15, vcprm(3,1,s3,s1));
+
+ y16 = vec_perm(y10, y15, vcprm(0,2,s0,s2));
+ y17 = vec_perm(y10, y15, vcprm(3,1,s3,s1));
+
+ x18 = vec_add(vz0, x16);
+ x19 = vec_sub(vz0, x16);
+ x20 = vec_add(vzo1, x17);
+ x21 = vec_sub(vzo1, x17);
+
+ y18 = vec_add(vz0plus1, y16);
+ y19 = vec_sub(vz0plus1, y16);
+ y20 = vec_add(vzo1plus1, y17);
+ y21 = vec_sub(vzo1plus1, y17);
+
+ x22 = vec_perm(x20, x21, vcprm(0,s1,2,s3));
+ x23 = vec_perm(x20, x21, vcprm(s0,1,s2,3));
+
+ y22 = vec_perm(y20, y21, vcprm(0,s1,2,s3));
+ y23 = vec_perm(y20, y21, vcprm(s0,1,s2,3));
+
+ vec_st(x18, 0, &(out[0]));
+ vec_st(y18, 16, &(out[0]));
+ vec_st(x22, i1, &(out[0]));
+ vec_st(y22, i1+16, &(out[0]));
+ vec_st(x19, i2, &(out[0]));
+ vec_st(y19, i2+16, &(out[0]));
+ vec_st(x23, i3, &(out[0]));
+ vec_st(y23, i3+16, &(out[0]));
+ } while (n-=2);
+}
+
+inline static void fft2_vsx_interleave(FFTComplex *z)
+{
+ FFTSample r1, i1;
+
+ r1 = z[0].re - z[1].re;
+ z[0].re += z[1].re;
+ z[1].re = r1;
+
+ i1 = z[0].im - z[1].im;
+ z[0].im += z[1].im;
+ z[1].im = i1;
+ }
+
+inline static void fft4_vsx_interleave(FFTComplex *z)
+{
+ vec_f a, b, c, d;
+ float* out= (float*)z;
+ a = vec_ld(0, &(out[0]));
+ b = vec_ld(byte_2complex, &(out[0]));
+
+ c = vec_perm(a, b, vcprm(0,1,s2,s1));
+ d = vec_perm(a, b, vcprm(2,3,s0,s3));
+ a = vec_add(c, d);
+ b = vec_sub(c, d);
+
+ c = vec_perm(a, b, vcprm(0,1,s0,s1));
+ d = vec_perm(a, b, vcprm(2,3,s3,s2));
+
+ a = vec_add(c, d);
+ b = vec_sub(c, d);
+ vec_st(a, 0, &(out[0]));
+ vec_st(b, byte_2complex, &(out[0]));
+}
+
+inline static void fft8_vsx_interleave(FFTComplex *z)
+{
+ vec_f vz0, vz1, vz2, vz3;
+ vec_f x0, x1, x2, x3;
+ vec_f x4, x5, x6, x7;
+ vec_f x8, x9, x10, x11;
+ vec_f x12, x13, x14, x15;
+ vec_f x16, x17, x18, x19;
+ vec_f x20, x21, x22, x23;
+ vec_f x24, x25, x26, x27;
+ vec_f x28, x29, x30, x31;
+ vec_f x32, x33, x34;
+
+ float* out= (float*)z;
+ vec_f vc1 = {sqrthalf, sqrthalf, sqrthalf, sqrthalf};
+
+ vz0 = vec_ld(0, &(out[0]));
+ vz1 = vec_ld(byte_2complex, &(out[0]));
+ vz2 = vec_ld(byte_4complex, &(out[0]));
+ vz3 = vec_ld(byte_6complex, &(out[0]));
+
+ x0 = vec_perm(vz0, vz1, vcprm(0,1,s2,s1));
+ x1 = vec_perm(vz0, vz1, vcprm(2,3,s0,s3));
+ x2 = vec_perm(vz2, vz3, vcprm(2,1,s0,s1));
+ x3 = vec_perm(vz2, vz3, vcprm(0,3,s2,s3));
+
+ x4 = vec_add(x0, x1);
+ x5 = vec_sub(x0, x1);
+ x6 = vec_add(x2, x3);
+ x7 = vec_sub(x2, x3);
+
+ x8 = vec_perm(x4, x5, vcprm(0,1,s0,s1));
+ x9 = vec_perm(x4, x5, vcprm(2,3,s3,s2));
+ x10 = vec_perm(x6, x7, vcprm(2,1,s2,s1));
+ x11 = vec_perm(x6, x7, vcprm(0,3,s0,s3));
+
+ x12 = vec_add(x8, x9);
+ x13 = vec_sub(x8, x9);
+ x14 = vec_add(x10, x11);
+ x15 = vec_sub(x10, x11);
+ x16 = vec_perm(x12, x13, vcprm(0,s0,1,s1));
+ x17 = vec_perm(x14, x15, vcprm(0,s0,1,s1));
+ x18 = vec_perm(x16, x17, vcprm(s0,s3,s2,s1));
+ x19 = vec_add(x16, x18); // z0.r z2.r z0.i z2.i
+ x20 = vec_sub(x16, x18); // z4.r z6.r z4.i z6.i
+
+ x21 = vec_perm(x12, x13, vcprm(2,s2,3,s3));
+ x22 = vec_perm(x14, x15, vcprm(2,3,s2,s3));
+ x23 = vec_perm(x14, x15, vcprm(3,2,s3,s2));
+ x24 = vec_add(x22, x23);
+ x25 = vec_sub(x22, x23);
+ x26 = vec_mul( vec_perm(x24, x25, vcprm(2,s2,0,s0)), vc1);
+
+ x27 = vec_add(x21, x26); // z1.r z7.r z1.i z3.i
+ x28 = vec_sub(x21, x26); //z5.r z3.r z5.i z7.i
+
+ x29 = vec_perm(x19, x27, vcprm(0,2,s0,s2)); // z0.r z0.i z1.r z1.i
+ x30 = vec_perm(x19, x27, vcprm(1,3,s1,s3)); // z2.r z2.i z7.r z3.i
+ x31 = vec_perm(x20, x28, vcprm(0,2,s0,s2)); // z4.r z4.i z5.r z5.i
+ x32 = vec_perm(x20, x28, vcprm(1,3,s1,s3)); // z6.r z6.i z3.r z7.i
+ x33 = vec_perm(x30, x32, vcprm(0,1,s2,3)); // z2.r z2.i z3.r z3.i
+ x34 = vec_perm(x30, x32, vcprm(s0,s1,2,s3)); // z6.r z6.i z7.r z7.i
+
+ vec_st(x29, 0, &(out[0]));
+ vec_st(x33, byte_2complex, &(out[0]));
+ vec_st(x31, byte_4complex, &(out[0]));
+ vec_st(x34, byte_6complex, &(out[0]));
+}
+
+inline static void fft16_vsx_interleave(FFTComplex *z)
+{
+ float* out= (float*)z;
+ vec_f vc0 = {sqrthalf, sqrthalf, sqrthalf, sqrthalf};
+ vec_f vc1 = {ff_cos_16[1], ff_cos_16[1], ff_cos_16[1], ff_cos_16[1]};
+ vec_f vc2 = {ff_cos_16[3], ff_cos_16[3], ff_cos_16[3], ff_cos_16[3]};
+ vec_f vz0, vz1, vz2, vz3;
+ vec_f vz4, vz5, vz6, vz7;
+ vec_f x0, x1, x2, x3;
+ vec_f x4, x5, x6, x7;
+ vec_f x8, x9, x10, x11;
+ vec_f x12, x13, x14, x15;
+ vec_f x16, x17, x18, x19;
+ vec_f x20, x21, x22, x23;
+ vec_f x24, x25, x26, x27;
+ vec_f x28, x29, x30, x31;
+ vec_f x32, x33, x34, x35;
+ vec_f x36, x37, x38, x39;
+ vec_f x40, x41, x42, x43;
+ vec_f x44, x45, x46, x47;
+ vec_f x48, x49, x50, x51;
+ vec_f x52, x53, x54, x55;
+ vec_f x56, x57, x58, x59;
+ vec_f x60, x61, x62, x63;
+ vec_f x64, x65, x66, x67;
+ vec_f x68, x69, x70, x71;
+ vec_f x72, x73, x74, x75;
+ vec_f x76, x77, x78, x79;
+ vec_f x80, x81, x82, x83;
+ vec_f x84, x85, x86;
+
+ vz0 = vec_ld(0, &(out[0]));
+ vz1 = vec_ld(byte_2complex, &(out[0]));
+ vz2 = vec_ld(byte_4complex, &(out[0]));
+ vz3 = vec_ld(byte_6complex, &(out[0]));
+ vz4 = vec_ld(byte_8complex, &(out[0]));
+ vz5 = vec_ld(byte_10complex, &(out[0]));
+ vz6 = vec_ld(byte_12complex, &(out[0]));
+ vz7 = vec_ld(byte_14complex, &(out[0]));
+
+ x0 = vec_perm(vz0, vz1, vcprm(0,1,s2,s1));
+ x1 = vec_perm(vz0, vz1, vcprm(2,3,s0,s3));
+ x2 = vec_perm(vz2, vz3, vcprm(0,1,s0,s1));
+ x3 = vec_perm(vz2, vz3, vcprm(2,3,s2,s3));
+
+ x4 = vec_perm(vz4, vz5, vcprm(0,1,s2,s1));
+ x5 = vec_perm(vz4, vz5, vcprm(2,3,s0,s3));
+ x6 = vec_perm(vz6, vz7, vcprm(0,1,s2,s1));
+ x7 = vec_perm(vz6, vz7, vcprm(2,3,s0,s3));
+
+ x8 = vec_add(x0, x1);
+ x9 = vec_sub(x0, x1);
+ x10 = vec_add(x2, x3);
+ x11 = vec_sub(x2, x3);
+
+ x12 = vec_add(x4, x5);
+ x13 = vec_sub(x4, x5);
+ x14 = vec_add(x6, x7);
+ x15 = vec_sub(x6, x7);
+
+ x16 = vec_perm(x8, x9, vcprm(0,1,s0,s1));
+ x17 = vec_perm(x8, x9, vcprm(2,3,s3,s2));
+ x18 = vec_perm(x10, x11, vcprm(2,1,s1,s2));
+ x19 = vec_perm(x10, x11, vcprm(0,3,s0,s3));
+ x20 = vec_perm(x12, x14, vcprm(0,1,s0, s1));
+ x21 = vec_perm(x12, x14, vcprm(2,3,s2,s3));
+ x22 = vec_perm(x13, x15, vcprm(0,1,s0,s1));
+ x23 = vec_perm(x13, x15, vcprm(3,2,s3,s2));
+
+ x24 = vec_add(x16, x17);
+ x25 = vec_sub(x16, x17);
+ x26 = vec_add(x18, x19);
+ x27 = vec_sub(x18, x19);
+ x28 = vec_add(x20, x21);
+ x29 = vec_sub(x20, x21);
+ x30 = vec_add(x22, x23);
+ x31 = vec_sub(x22, x23);
+
+ x32 = vec_add(x24, x26);
+ x33 = vec_sub(x24, x26);
+ x34 = vec_perm(x32, x33, vcprm(0,1,s0,s1));
+
+ x35 = vec_perm(x28, x29, vcprm(2,1,s1,s2));
+ x36 = vec_perm(x28, x29, vcprm(0,3,s0,s3));
+ x37 = vec_add(x35, x36);
+ x38 = vec_sub(x35, x36);
+ x39 = vec_perm(x37, x38, vcprm(0,1,s1,s0));
+
+ x40 = vec_perm(x27, x38, vcprm(3,2,s2,s3));
+ x41 = vec_perm(x26, x37, vcprm(2,3,s3,s2));
+ x42 = vec_add(x40, x41);
+ x43 = vec_sub(x40, x41);
+ x44 = vec_mul(x42, vc0);
+ x45 = vec_mul(x43, vc0);
+
+ x46 = vec_add(x34, x39); // z0.r z0.i z4.r z4.i
+ x47 = vec_sub(x34, x39); // z8.r z8.i z12.r z12.i
+
+ x48 = vec_perm(x30, x31, vcprm(2,1,s1,s2));
+ x49 = vec_perm(x30, x31, vcprm(0,3,s3,s0));
+ x50 = vec_add(x48, x49);
+ x51 = vec_sub(x48, x49);
+ x52 = vec_mul(x50, vc1);
+ x53 = vec_mul(x50, vc2);
+ x54 = vec_mul(x51, vc1);
+ x55 = vec_mul(x51, vc2);
+
+ x56 = vec_perm(x24, x25, vcprm(2,3,s2,s3));
+ x57 = vec_perm(x44, x45, vcprm(0,1,s1,s0));
+ x58 = vec_add(x56, x57);
+ x59 = vec_sub(x56, x57);
+
+ x60 = vec_perm(x54, x55, vcprm(1,0,3,2));
+ x61 = vec_perm(x54, x55, vcprm(s1,s0,s3,s2));
+ x62 = vec_add(x52, x61);
+ x63 = vec_sub(x52, x61);
+ x64 = vec_add(x60, x53);
+ x65 = vec_sub(x60, x53);
+ x66 = vec_perm(x62, x64, vcprm(0,1,s3,s2));
+ x67 = vec_perm(x63, x65, vcprm(s0,s1,3,2));
+
+ x68 = vec_add(x58, x66); // z1.r z1.i z3.r z3.i
+ x69 = vec_sub(x58, x66); // z9.r z9.i z11.r z11.i
+ x70 = vec_add(x59, x67); // z5.r z5.i z15.r z15.i
+ x71 = vec_sub(x59, x67); // z13.r z13.i z7.r z7.i
+
+ x72 = vec_perm(x25, x27, vcprm(s1,s0,s2,s3));
+ x73 = vec_add(x25, x72);
+ x74 = vec_sub(x25, x72);
+ x75 = vec_perm(x73, x74, vcprm(0,1,s0,s1));
+ x76 = vec_perm(x44, x45, vcprm(3,2,s2,s3));
+ x77 = vec_add(x75, x76); // z2.r z2.i z6.r z6.i
+ x78 = vec_sub(x75, x76); // z10.r z10.i z14.r z14.i
+
+ x79 = vec_perm(x46, x68, vcprm(0,1,s0,s1)); // z0.r z0.i z1.r z1.i
+ x80 = vec_perm(x77, x68, vcprm(0,1,s2,s3)); // z2.r z2.i z3.r z3.i
+ x81 = vec_perm(x46, x70, vcprm(2,3,s0,s1)); // z4.r z4.i z5.r z5.i
+ x82 = vec_perm(x71, x77, vcprm(s2,s3,2,3)); // z6.r z6.i z7.r z7.i
+ vec_st(x79, 0, &(out[0]));
+ vec_st(x80, byte_2complex, &(out[0]));
+ vec_st(x81, byte_4complex, &(out[0]));
+ vec_st(x82, byte_6complex, &(out[0]));
+ x83 = vec_perm(x47, x69, vcprm(0,1,s0,s1)); // z8.r z8.i z9.r z9.i
+ x84 = vec_perm(x78, x69, vcprm(0,1,s2,s3)); // z10.r z10.i z11.r z11.i
+ x85 = vec_perm(x47, x71, vcprm(2,3,s0,s1)); // z12.r z12.i z13.r z13.i
+ x86 = vec_perm(x70, x78, vcprm(s2,s3,2,3)); // z14.r z14.i z15.r z15.i
+ vec_st(x83, byte_8complex, &(out[0]));
+ vec_st(x84, byte_10complex, &(out[0]));
+ vec_st(x85, byte_12complex, &(out[0]));
+ vec_st(x86, byte_14complex, &(out[0]));
+}
+
+inline static void fft4_vsx(FFTComplex *z)
+{
+ vec_f a, b, c, d;
+ float* out= (float*)z;
+ a = vec_ld(0, &(out[0]));
+ b = vec_ld(byte_2complex, &(out[0]));
+
+ c = vec_perm(a, b, vcprm(0,1,s2,s1));
+ d = vec_perm(a, b, vcprm(2,3,s0,s3));
+ a = vec_add(c, d);
+ b = vec_sub(c, d);
+
+ c = vec_perm(a,b, vcprm(0,s0,1,s1));
+ d = vec_perm(a, b, vcprm(2,s3,3,s2));
+
+ a = vec_add(c, d);
+ b = vec_sub(c, d);
+
+ c = vec_perm(a, b, vcprm(0,1,s0,s1));
+ d = vec_perm(a, b, vcprm(2,3,s2,s3));
+
+ vec_st(c, 0, &(out[0]));
+ vec_st(d, byte_2complex, &(out[0]));
+ return;
+}
+
+inline static void fft8_vsx(FFTComplex *z)
+{
+ vec_f vz0, vz1, vz2, vz3;
+ vec_f vz4, vz5, vz6, vz7, vz8;
+
+ float* out= (float*)z;
+ vec_f vc0 = {0.0, 0.0, 0.0, 0.0};
+ vec_f vc1 = {-sqrthalf, sqrthalf, sqrthalf, -sqrthalf};
+ vec_f vc2 = {sqrthalf, sqrthalf, sqrthalf, sqrthalf};
+
+ vz0 = vec_ld(0, &(out[0]));
+ vz1 = vec_ld(byte_2complex, &(out[0]));
+ vz2 = vec_ld(byte_4complex, &(out[0]));
+ vz3 = vec_ld(byte_6complex, &(out[0]));
+
+ vz6 = vec_perm(vz2, vz3, vcprm(0,s0,1,s1));
+ vz7 = vec_perm(vz2, vz3, vcprm(2,s2,3,s3));
+ vz4 = vec_perm(vz0, vz1, vcprm(0,1,s2,s1));
+ vz5 = vec_perm(vz0, vz1, vcprm(2,3,s0,s3));
+
+ vz2 = vec_add(vz6, vz7);
+ vz3 = vec_sub(vz6, vz7);
+ vz8 = vec_perm(vz3, vz3, vcprm(2,3,0,1));
+
+ vz0 = vec_add(vz4, vz5);
+ vz1 = vec_sub(vz4, vz5);
+
+ vz3 = vec_madd(vz3, vc1, vc0);
+ vz3 = vec_madd(vz8, vc2, vz3);
+
+ vz4 = vec_perm(vz0, vz1, vcprm(0,s0,1,s1));
+ vz5 = vec_perm(vz0, vz1, vcprm(2,s3,3,s2));
+ vz6 = vec_perm(vz2, vz3, vcprm(1,2,s3,s0));
+ vz7 = vec_perm(vz2, vz3, vcprm(0,3,s2,s1));
+
+ vz0 = vec_add(vz4, vz5);
+ vz1 = vec_sub(vz4, vz5);
+ vz2 = vec_add(vz6, vz7);
+ vz3 = vec_sub(vz6, vz7);
+
+ vz4 = vec_perm(vz0, vz1, vcprm(0,1,s0,s1));
+ vz5 = vec_perm(vz0, vz1, vcprm(2,3,s2,s3));
+ vz6 = vec_perm(vz2, vz3, vcprm(0,2,s1,s3));
+ vz7 = vec_perm(vz2, vz3, vcprm(1,3,s0,s2));
+
+
+ vz2 = vec_sub(vz4, vz6);
+ vz3 = vec_sub(vz5, vz7);
+
+ vz0 = vec_add(vz4, vz6);
+ vz1 = vec_add(vz5, vz7);
+
+ vec_st(vz0, 0, &(out[0]));
+ vec_st(vz1, byte_2complex, &(out[0]));
+ vec_st(vz2, byte_4complex, &(out[0]));
+ vec_st(vz3, byte_6complex, &(out[0]));
+ return;
+}
+
+inline static void fft16_vsx(FFTComplex *z)
+{
+ float* out= (float*)z;
+ vec_f vc0 = {0.0, 0.0, 0.0, 0.0};
+ vec_f vc1 = {-sqrthalf, sqrthalf, sqrthalf, -sqrthalf};
+ vec_f vc2 = {sqrthalf, sqrthalf, sqrthalf, sqrthalf};
+ vec_f vc3 = {1.0, 0.92387953, sqrthalf, 0.38268343};
+ vec_f vc4 = {0.0, 0.38268343, sqrthalf, 0.92387953};
+ vec_f vc5 = {-0.0, -0.38268343, -sqrthalf, -0.92387953};
+
+ vec_f vz0, vz1, vz2, vz3;
+ vec_f vz4, vz5, vz6, vz7;
+ vec_f vz8, vz9, vz10, vz11;
+ vec_f vz12, vz13;
+
+ vz0 = vec_ld(byte_8complex, &(out[0]));
+ vz1 = vec_ld(byte_10complex, &(out[0]));
+ vz2 = vec_ld(byte_12complex, &(out[0]));
+ vz3 = vec_ld(byte_14complex, &(out[0]));
+
+ vz4 = vec_perm(vz0, vz1, vcprm(0,1,s2,s1));
+ vz5 = vec_perm(vz0, vz1, vcprm(2,3,s0,s3));
+ vz6 = vec_perm(vz2, vz3, vcprm(0,1,s2,s1));
+ vz7 = vec_perm(vz2, vz3, vcprm(2,3,s0,s3));
+
+ vz0 = vec_add(vz4, vz5);
+ vz1= vec_sub(vz4, vz5);
+ vz2 = vec_add(vz6, vz7);
+ vz3 = vec_sub(vz6, vz7);
+
+ vz4 = vec_perm(vz0, vz1, vcprm(0,s0,1,s1));
+ vz5 = vec_perm(vz0, vz1, vcprm(2,s3,3,s2));
+ vz6 = vec_perm(vz2, vz3, vcprm(0,s0,1,s1));
+ vz7 = vec_perm(vz2, vz3, vcprm(2,s3,3,s2));
+
+ vz0 = vec_add(vz4, vz5);
+ vz1 = vec_sub(vz4, vz5);
+ vz2 = vec_add(vz6, vz7);
+ vz3 = vec_sub(vz6, vz7);
+
+ vz4 = vec_perm(vz0, vz1, vcprm(0,1,s0,s1));
+ vz5 = vec_perm(vz0, vz1, vcprm(2,3,s2,s3));
+
+ vz6 = vec_perm(vz2, vz3, vcprm(0,1,s0,s1));
+ vz7 = vec_perm(vz2, vz3, vcprm(2,3,s2,s3));
+
+ vz0 = vec_ld(0, &(out[0]));
+ vz1 = vec_ld(byte_2complex, &(out[0]));
+ vz2 = vec_ld(byte_4complex, &(out[0]));
+ vz3 = vec_ld(byte_6complex, &(out[0]));
+ vz10 = vec_perm(vz2, vz3, vcprm(0,s0,1,s1));
+ vz11 = vec_perm(vz2, vz3, vcprm(2,s2,3,s3));
+ vz8 = vec_perm(vz0, vz1, vcprm(0,1,s2,s1));
+ vz9 = vec_perm(vz0, vz1, vcprm(2,3,s0,s3));
+
+ vz2 = vec_add(vz10, vz11);
+ vz3 = vec_sub(vz10, vz11);
+ vz12 = vec_perm(vz3, vz3, vcprm(2,3,0,1));
+ vz0 = vec_add(vz8, vz9);
+ vz1 = vec_sub(vz8, vz9);
+
+ vz3 = vec_madd(vz3, vc1, vc0);
+ vz3 = vec_madd(vz12, vc2, vz3);
+ vz8 = vec_perm(vz0, vz1, vcprm(0,s0,1,s1));
+ vz9 = vec_perm(vz0, vz1, vcprm(2,s3,3,s2));
+ vz10 = vec_perm(vz2, vz3, vcprm(1,2,s3,s0));
+ vz11 = vec_perm(vz2, vz3, vcprm(0,3,s2,s1));
+
+ vz0 = vec_add(vz8, vz9);
+ vz1 = vec_sub(vz8, vz9);
+ vz2 = vec_add(vz10, vz11);
+ vz3 = vec_sub(vz10, vz11);
+
+ vz8 = vec_perm(vz0, vz1, vcprm(0,1,s0,s1));
+ vz9 = vec_perm(vz0, vz1, vcprm(2,3,s2,s3));
+ vz10 = vec_perm(vz2, vz3, vcprm(0,2,s1,s3));
+ vz11 = vec_perm(vz2, vz3, vcprm(1,3,s0,s2));
+
+ vz2 = vec_sub(vz8, vz10);
+ vz3 = vec_sub(vz9, vz11);
+ vz0 = vec_add(vz8, vz10);
+ vz1 = vec_add(vz9, vz11);
+
+ vz8 = vec_madd(vz4, vc3, vc0);
+ vz9 = vec_madd(vz5, vc3, vc0);
+ vz10 = vec_madd(vz6, vc3, vc0);
+ vz11 = vec_madd(vz7, vc3, vc0);
+
+ vz8 = vec_madd(vz5, vc4, vz8);
+ vz9 = vec_madd(vz4, vc5, vz9);
+ vz10 = vec_madd(vz7, vc5, vz10);
+ vz11 = vec_madd(vz6, vc4, vz11);
+
+ vz12 = vec_sub(vz10, vz8);
+ vz10 = vec_add(vz10, vz8);
+
+ vz13 = vec_sub(vz9, vz11);
+ vz11 = vec_add(vz9, vz11);
+
+ vz4 = vec_sub(vz0, vz10);
+ vz0 = vec_add(vz0, vz10);
+
+ vz7= vec_sub(vz3, vz12);
+ vz3= vec_add(vz3, vz12);
+
+ vz5 = vec_sub(vz1, vz11);
+ vz1 = vec_add(vz1, vz11);
+
+ vz6 = vec_sub(vz2, vz13);
+ vz2 = vec_add(vz2, vz13);
+
+ vec_st(vz0, 0, &(out[0]));
+ vec_st(vz1, byte_2complex, &(out[0]));
+ vec_st(vz2, byte_4complex, &(out[0]));
+ vec_st(vz3, byte_6complex, &(out[0]));
+ vec_st(vz4, byte_8complex, &(out[0]));
+ vec_st(vz5, byte_10complex, &(out[0]));
+ vec_st(vz6, byte_12complex, &(out[0]));
+ vec_st(vz7, byte_14complex, &(out[0]));
+ return;
+
+}
+inline static void pass_vsx(FFTComplex * z, const FFTSample * wre, unsigned int n)
+{
+ int o1 = n<<1;
+ int o2 = n<<2;
+ int o3 = o1+o2;
+ int i1, i2, i3;
+ FFTSample* out = (FFTSample*)z;
+ const FFTSample *wim = wre+o1;
+ vec_f v0, v1, v2, v3;
+ vec_f v4, v5, v6, v7;
+ vec_f v8, v9, v10, v11;
+ vec_f v12, v13;
+
+ n = n-2;
+ i1 = o1*sizeof(FFTComplex);
+ i2 = o2*sizeof(FFTComplex);
+ i3 = o3*sizeof(FFTComplex);
+
+ v8 = vec_ld(0, &(wre[0]));
+ v10 = vec_ld(0, &(wim[0]));
+ v9 = vec_ld(0, &(wim[-4]));
+ v9 = vec_perm(v9, v10, vcprm(s0,3,2,1));
+
+ v4 = vec_ld(i2, &(out[0]));
+ v5 = vec_ld(i2+16, &(out[0]));
+ v6 = vec_ld(i3, &(out[0]));
+ v7 = vec_ld(i3+16, &(out[0]));
+ v10 = vec_mul(v4, v8); // r2*wre
+ v11 = vec_mul(v5, v8); // i2*wre
+ v12 = vec_mul(v6, v8); // r3*wre
+ v13 = vec_mul(v7, v8); // i3*wre
+
+ v0 = vec_ld(0, &(out[0])); // r0
+ v3 = vec_ld(i1+16, &(out[0])); // i1
+ v10 = vec_madd(v5, v9, v10); // r2*wim
+ v11 = vec_nmsub(v4, v9, v11); // i2*wim
+ v12 = vec_nmsub(v7, v9, v12); // r3*wim
+ v13 = vec_madd(v6, v9, v13); // i3*wim
+
+ v1 = vec_ld(16, &(out[0])); // i0
+ v2 = vec_ld(i1, &(out[0])); // r1
+ v8 = vec_sub(v12, v10);
+ v12 = vec_add(v12, v10);
+ v9 = vec_sub(v11, v13);
+ v13 = vec_add(v11, v13);
+ v4 = vec_sub(v0, v12);
+ v0 = vec_add(v0, v12);
+ v7 = vec_sub(v3, v8);
+ v3 = vec_add(v3, v8);
+
+ vec_st(v0, 0, &(out[0])); // r0
+ vec_st(v3, i1+16, &(out[0])); // i1
+ vec_st(v4, i2, &(out[0])); // r2
+ vec_st(v7, i3+16, &(out[0]));// i3
+
+ v5 = vec_sub(v1, v13);
+ v1 = vec_add(v1, v13);
+ v6 = vec_sub(v2, v9);
+ v2 = vec_add(v2, v9);
+
+ vec_st(v1, 16, &(out[0])); // i0
+ vec_st(v2, i1, &(out[0])); // r1
+ vec_st(v5, i2+16, &(out[0])); // i2
+ vec_st(v6, i3, &(out[0])); // r3
+
+ do {
+ out += 8;
+ wre += 4;
+ wim -= 4;
+
+ v8 = vec_ld(0, &(wre[0]));
+ v10 = vec_ld(0, &(wim[0]));
+ v9 = vec_ld(0, &(wim[-4]));
+ v9 = vec_perm(v9, v10, vcprm(s0,3,2,1));
+
+ v4 = vec_ld(i2, &(out[0])); // r2
+ v5 = vec_ld(i2+16, &(out[0])); // i2
+ v6 = vec_ld(i3, &(out[0])); // r3
+ v7 = vec_ld(i3+16, &(out[0]));// i3
+ v10 = vec_mul(v4, v8); // r2*wre
+ v11 = vec_mul(v5, v8); // i2*wre
+ v12 = vec_mul(v6, v8); // r3*wre
+ v13 = vec_mul(v7, v8); // i3*wre
+
+ v0 = vec_ld(0, &(out[0])); // r0
+ v3 = vec_ld(i1+16, &(out[0])); // i1
+ v10 = vec_madd(v5, v9, v10); // r2*wim
+ v11 = vec_nmsub(v4, v9, v11); // i2*wim
+ v12 = vec_nmsub(v7, v9, v12); // r3*wim
+ v13 = vec_madd(v6, v9, v13); // i3*wim
+
+ v1 = vec_ld(16, &(out[0])); // i0
+ v2 = vec_ld(i1, &(out[0])); // r1
+ v8 = vec_sub(v12, v10);
+ v12 = vec_add(v12, v10);
+ v9 = vec_sub(v11, v13);
+ v13 = vec_add(v11, v13);
+ v4 = vec_sub(v0, v12);
+ v0 = vec_add(v0, v12);
+ v7 = vec_sub(v3, v8);
+ v3 = vec_add(v3, v8);
+
+ vec_st(v0, 0, &(out[0])); // r0
+ vec_st(v3, i1+16, &(out[0])); // i1
+ vec_st(v4, i2, &(out[0])); // r2
+ vec_st(v7, i3+16, &(out[0])); // i3
+
+ v5 = vec_sub(v1, v13);
+ v1 = vec_add(v1, v13);
+ v6 = vec_sub(v2, v9);
+ v2 = vec_add(v2, v9);
+
+ vec_st(v1, 16, &(out[0])); // i0
+ vec_st(v2, i1, &(out[0])); // r1
+ vec_st(v5, i2+16, &(out[0])); // i2
+ vec_st(v6, i3, &(out[0])); // r3
+ } while (n-=2);
+}
+
+#endif
+
+#endif /* AVCODEC_PPC_FFT_VSX_H */
More information about the ffmpeg-cvslog
mailing list