* FFT/MDCT transform with SSE optimizations
* Copyright (c) 2008 Loren Merritt
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/x86_cpu.h"
#include "libavcodec/dsputil.h"
#include "fft.h"
+#include "config.h"
-DECLARE_ALIGNED(16, static const int, m1m1m1m1)[4] =
+DECLARE_ASM_CONST(16, int, ff_m1m1m1m1)[4] =
{ 1 << 31, 1 << 31, 1 << 31, 1 << 31 };
void ff_fft_dispatch_sse(FFTComplex *z, int nbits);
void ff_fft_dispatch_interleave_sse(FFTComplex *z, int nbits);
+void ff_fft_dispatch_interleave_avx(FFTComplex *z, int nbits);
+
+#if HAVE_AVX
+void ff_fft_calc_avx(FFTContext *s, FFTComplex *z)
+{
+ ff_fft_dispatch_interleave_avx(z, s->nbits);
+}
+#endif
void ff_fft_calc_sse(FFTContext *s, FFTComplex *z)
{
memcpy(z, s->tmp_buf, n*sizeof(FFTComplex));
}
-void ff_imdct_half_sse(FFTContext *s, FFTSample *output, const FFTSample *input)
-{
- av_unused x86_reg i, j, k, l;
- long n = 1 << s->mdct_bits;
- long n2 = n >> 1;
- long n4 = n >> 2;
- long n8 = n >> 3;
- const uint16_t *revtab = s->revtab + n8;
- const FFTSample *tcos = s->tcos;
- const FFTSample *tsin = s->tsin;
- FFTComplex *z = (FFTComplex *)output;
-
- /* pre rotation */
- for(k=n8-2; k>=0; k-=2) {
- __asm__ volatile(
- "movaps (%2,%1,2), %%xmm0 \n" // { z[k].re, z[k].im, z[k+1].re, z[k+1].im }
- "movaps -16(%2,%0,2), %%xmm1 \n" // { z[-k-2].re, z[-k-2].im, z[-k-1].re, z[-k-1].im }
- "movaps %%xmm0, %%xmm2 \n"
- "shufps $0x88, %%xmm1, %%xmm0 \n" // { z[k].re, z[k+1].re, z[-k-2].re, z[-k-1].re }
- "shufps $0x77, %%xmm2, %%xmm1 \n" // { z[-k-1].im, z[-k-2].im, z[k+1].im, z[k].im }
- "movlps (%3,%1), %%xmm4 \n"
- "movlps (%4,%1), %%xmm5 \n"
- "movhps -8(%3,%0), %%xmm4 \n" // { cos[k], cos[k+1], cos[-k-2], cos[-k-1] }
- "movhps -8(%4,%0), %%xmm5 \n" // { sin[k], sin[k+1], sin[-k-2], sin[-k-1] }
- "movaps %%xmm0, %%xmm2 \n"
- "movaps %%xmm1, %%xmm3 \n"
- "mulps %%xmm5, %%xmm0 \n" // re*sin
- "mulps %%xmm4, %%xmm1 \n" // im*cos
- "mulps %%xmm4, %%xmm2 \n" // re*cos
- "mulps %%xmm5, %%xmm3 \n" // im*sin
- "subps %%xmm0, %%xmm1 \n" // -> re
- "addps %%xmm3, %%xmm2 \n" // -> im
- "movaps %%xmm1, %%xmm0 \n"
- "unpcklps %%xmm2, %%xmm1 \n" // { z[k], z[k+1] }
- "unpckhps %%xmm2, %%xmm0 \n" // { z[-k-2], z[-k-1] }
- ::"r"(-4*k), "r"(4*k),
- "r"(input+n4), "r"(tcos+n8), "r"(tsin+n8)
- );
-#if ARCH_X86_64
- // if we have enough regs, don't let gcc make the luts latency-bound
- // but if not, latency is faster than spilling
- __asm__("movlps %%xmm0, %0 \n"
- "movhps %%xmm0, %1 \n"
- "movlps %%xmm1, %2 \n"
- "movhps %%xmm1, %3 \n"
- :"=m"(z[revtab[-k-2]]),
- "=m"(z[revtab[-k-1]]),
- "=m"(z[revtab[ k ]]),
- "=m"(z[revtab[ k+1]])
- );
-#else
- __asm__("movlps %%xmm0, %0" :"=m"(z[revtab[-k-2]]));
- __asm__("movhps %%xmm0, %0" :"=m"(z[revtab[-k-1]]));
- __asm__("movlps %%xmm1, %0" :"=m"(z[revtab[ k ]]));
- __asm__("movhps %%xmm1, %0" :"=m"(z[revtab[ k+1]]));
-#endif
- }
-
- ff_fft_dispatch_sse(z, s->nbits);
-
- /* post rotation + reinterleave + reorder */
-
-#define CMUL(j,xmm0,xmm1)\
- "movaps (%2,"#j",2), %%xmm6 \n"\
- "movaps 16(%2,"#j",2), "#xmm0"\n"\
- "movaps %%xmm6, "#xmm1"\n"\
- "movaps "#xmm0",%%xmm7 \n"\
- "mulps (%3,"#j"), %%xmm6 \n"\
- "mulps (%4,"#j"), "#xmm0"\n"\
- "mulps (%4,"#j"), "#xmm1"\n"\
- "mulps (%3,"#j"), %%xmm7 \n"\
- "subps %%xmm6, "#xmm0"\n"\
- "addps %%xmm7, "#xmm1"\n"
-
- j = -n2;
- k = n2-16;
- __asm__ volatile(
- "1: \n"
- CMUL(%0, %%xmm0, %%xmm1)
- CMUL(%1, %%xmm4, %%xmm5)
- "shufps $0x1b, %%xmm1, %%xmm1 \n"
- "shufps $0x1b, %%xmm5, %%xmm5 \n"
- "movaps %%xmm4, %%xmm6 \n"
- "unpckhps %%xmm1, %%xmm4 \n"
- "unpcklps %%xmm1, %%xmm6 \n"
- "movaps %%xmm0, %%xmm2 \n"
- "unpcklps %%xmm5, %%xmm0 \n"
- "unpckhps %%xmm5, %%xmm2 \n"
- "movaps %%xmm6, (%2,%1,2) \n"
- "movaps %%xmm4, 16(%2,%1,2) \n"
- "movaps %%xmm0, (%2,%0,2) \n"
- "movaps %%xmm2, 16(%2,%0,2) \n"
- "sub $16, %1 \n"
- "add $16, %0 \n"
- "jl 1b \n"
- :"+&r"(j), "+&r"(k)
- :"r"(z+n8), "r"(tcos+n8), "r"(tsin+n8)
- :"memory"
- );
-}
-
void ff_imdct_calc_sse(FFTContext *s, FFTSample *output, const FFTSample *input)
{
x86_reg j, k;
- long n = 1 << s->mdct_bits;
+ long n = s->mdct_size;
long n4 = n >> 2;
- ff_imdct_half_sse(s, output+n4, input);
+ s->imdct_half(s, output + n4, input);
j = -n;
k = n-16;
__asm__ volatile(
- "movaps %4, %%xmm7 \n"
+ "movaps "MANGLE(ff_m1m1m1m1)", %%xmm7 \n"
"1: \n"
"movaps (%2,%1), %%xmm0 \n"
"movaps (%3,%0), %%xmm1 \n"
"add $16, %0 \n"
"jl 1b \n"
:"+r"(j), "+r"(k)
- :"r"(output+n4), "r"(output+n4*3),
- "m"(*m1m1m1m1)
+ :"r"(output+n4), "r"(output+n4*3)
+ XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm7")
);
}
projects / ffmpeg / blobdiff