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/*
* This file is part of Libav.
*
* 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.
*
* 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 Libav; 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/float_dsp.h"
#include "cpu.h"
#include "asm.h"
extern void ff_vector_fmul_sse(float *dst, const float *src0, const float *src1,
int len);
extern void ff_vector_fmul_avx(float *dst, const float *src0, const float *src1,
int len);
extern void ff_vector_fmac_scalar_sse(float *dst, const float *src, float mul,
int len);
extern void ff_vector_fmac_scalar_avx(float *dst, const float *src, float mul,
int len);
extern void ff_vector_fmul_scalar_sse(float *dst, const float *src, float mul,
int len);
extern void ff_vector_dmul_scalar_sse2(double *dst, const double *src,
double mul, int len);
extern void ff_vector_dmul_scalar_avx(double *dst, const double *src,
double mul, int len);
#if HAVE_6REGS
static void vector_fmul_window_3dnowext(float *dst, const float *src0,
const float *src1, const float *win,
int len)
{
x86_reg i = -len * 4;
x86_reg j = len * 4 - 8;
__asm__ volatile (
"1: \n"
"pswapd (%5, %1), %%mm1 \n"
"movq (%5, %0), %%mm0 \n"
"pswapd (%4, %1), %%mm5 \n"
"movq (%3, %0), %%mm4 \n"
"movq %%mm0, %%mm2 \n"
"movq %%mm1, %%mm3 \n"
"pfmul %%mm4, %%mm2 \n" // src0[len + i] * win[len + i]
"pfmul %%mm5, %%mm3 \n" // src1[j] * win[len + j]
"pfmul %%mm4, %%mm1 \n" // src0[len + i] * win[len + j]
"pfmul %%mm5, %%mm0 \n" // src1[j] * win[len + i]
"pfadd %%mm3, %%mm2 \n"
"pfsub %%mm0, %%mm1 \n"
"pswapd %%mm2, %%mm2 \n"
"movq %%mm1, (%2, %0) \n"
"movq %%mm2, (%2, %1) \n"
"sub $8, %1 \n"
"add $8, %0 \n"
"jl 1b \n"
"femms \n"
: "+r"(i), "+r"(j)
: "r"(dst + len), "r"(src0 + len), "r"(src1), "r"(win + len)
);
}
static void vector_fmul_window_sse(float *dst, const float *src0,
const float *src1, const float *win, int len)
{
x86_reg i = -len * 4;
x86_reg j = len * 4 - 16;
__asm__ volatile (
"1: \n"
"movaps (%5, %1), %%xmm1 \n"
"movaps (%5, %0), %%xmm0 \n"
"movaps (%4, %1), %%xmm5 \n"
"movaps (%3, %0), %%xmm4 \n"
"shufps $0x1b, %%xmm1, %%xmm1 \n"
"shufps $0x1b, %%xmm5, %%xmm5 \n"
"movaps %%xmm0, %%xmm2 \n"
"movaps %%xmm1, %%xmm3 \n"
"mulps %%xmm4, %%xmm2 \n" // src0[len + i] * win[len + i]
"mulps %%xmm5, %%xmm3 \n" // src1[j] * win[len + j]
"mulps %%xmm4, %%xmm1 \n" // src0[len + i] * win[len + j]
"mulps %%xmm5, %%xmm0 \n" // src1[j] * win[len + i]
"addps %%xmm3, %%xmm2 \n"
"subps %%xmm0, %%xmm1 \n"
"shufps $0x1b, %%xmm2, %%xmm2 \n"
"movaps %%xmm1, (%2, %0) \n"
"movaps %%xmm2, (%2, %1) \n"
"sub $16, %1 \n"
"add $16, %0 \n"
"jl 1b \n"
: "+r"(i), "+r"(j)
: "r"(dst + len), "r"(src0 + len), "r"(src1), "r"(win + len)
);
}
#endif /* HAVE_6REGS */
void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp)
{
int mm_flags = av_get_cpu_flags();
#if HAVE_6REGS
if (INLINE_AMD3DNOWEXT(mm_flags)) {
fdsp->vector_fmul_window = vector_fmul_window_3dnowext;
}
if (INLINE_SSE(mm_flags)) {
fdsp->vector_fmul_window = vector_fmul_window_sse;
}
#endif
if (EXTERNAL_SSE(mm_flags)) {
fdsp->vector_fmul = ff_vector_fmul_sse;
fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_sse;
fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_sse;
}
if (EXTERNAL_SSE2(mm_flags)) {
fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_sse2;
}
if (EXTERNAL_AVX(mm_flags)) {
fdsp->vector_fmul = ff_vector_fmul_avx;
fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_avx;
fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_avx;
}
}
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