diff options
Diffstat (limited to 'libavcodec/x86/mdct15_init.c')
-rw-r--r-- | libavcodec/x86/mdct15_init.c | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/libavcodec/x86/mdct15_init.c b/libavcodec/x86/mdct15_init.c deleted file mode 100644 index ea7301e1e7..0000000000 --- a/libavcodec/x86/mdct15_init.c +++ /dev/null @@ -1,104 +0,0 @@ -/* - * SIMD optimized non-power-of-two MDCT functions - * - * Copyright (C) 2017 Rostislav Pehlivanov <atomnuker@gmail.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 <string.h> - -#include "config.h" - -#include "libavutil/attributes.h" -#include "libavutil/x86/cpu.h" -#include "libavcodec/mdct15.h" - -void ff_mdct15_postreindex_sse3(FFTComplex *out, FFTComplex *in, FFTComplex *exp, int *lut, ptrdiff_t len8); -void ff_mdct15_postreindex_avx2(FFTComplex *out, FFTComplex *in, FFTComplex *exp, int *lut, ptrdiff_t len8); - -void ff_fft15_avx(FFTComplex *out, FFTComplex *in, FFTComplex *exptab, ptrdiff_t stride); - -static void perm_twiddles(MDCT15Context *s) -{ - int k; - FFTComplex tmp[30]; - - /* 5-point FFT twiddles */ - s->exptab[60].re = s->exptab[60].im = s->exptab[19].re; - s->exptab[61].re = s->exptab[61].im = s->exptab[19].im; - s->exptab[62].re = s->exptab[62].im = s->exptab[20].re; - s->exptab[63].re = s->exptab[63].im = s->exptab[20].im; - - /* 15-point FFT twiddles */ - for (k = 0; k < 5; k++) { - tmp[6*k + 0] = s->exptab[k + 0]; - tmp[6*k + 2] = s->exptab[k + 5]; - tmp[6*k + 4] = s->exptab[k + 10]; - - tmp[6*k + 1] = s->exptab[2 * (k + 0)]; - tmp[6*k + 3] = s->exptab[2 * (k + 5)]; - tmp[6*k + 5] = s->exptab[2 * k + 5 ]; - } - - for (k = 0; k < 6; k++) { - FFTComplex ac_exp[] = { - { tmp[6*1 + k].re, tmp[6*1 + k].re }, - { tmp[6*2 + k].re, tmp[6*2 + k].re }, - { tmp[6*3 + k].re, tmp[6*3 + k].re }, - { tmp[6*4 + k].re, tmp[6*4 + k].re }, - { tmp[6*1 + k].im, -tmp[6*1 + k].im }, - { tmp[6*2 + k].im, -tmp[6*2 + k].im }, - { tmp[6*3 + k].im, -tmp[6*3 + k].im }, - { tmp[6*4 + k].im, -tmp[6*4 + k].im }, - }; - memcpy(s->exptab + 8*k, ac_exp, 8*sizeof(FFTComplex)); - } - - /* Specialcase when k = 0 */ - for (k = 0; k < 3; k++) { - FFTComplex dc_exp[] = { - { tmp[2*k + 0].re, -tmp[2*k + 0].im }, - { tmp[2*k + 0].im, tmp[2*k + 0].re }, - { tmp[2*k + 1].re, -tmp[2*k + 1].im }, - { tmp[2*k + 1].im, tmp[2*k + 1].re }, - }; - memcpy(s->exptab + 8*6 + 4*k, dc_exp, 4*sizeof(FFTComplex)); - } -} - -av_cold void ff_mdct15_init_x86(MDCT15Context *s) -{ - int adjust_twiddles = 0; - int cpu_flags = av_get_cpu_flags(); - - if (EXTERNAL_SSE3(cpu_flags)) - s->postreindex = ff_mdct15_postreindex_sse3; - -#if ARCH_X86_64 - if (EXTERNAL_AVX(cpu_flags)) { - s->fft15 = ff_fft15_avx; - adjust_twiddles = 1; - } - - if (EXTERNAL_AVX2_FAST(cpu_flags)) - s->postreindex = ff_mdct15_postreindex_avx2; -#endif - - if (adjust_twiddles) - perm_twiddles(s); -} |