From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- media/ffvpx/libavutil/float_dsp.c | 146 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100644 media/ffvpx/libavutil/float_dsp.c (limited to 'media/ffvpx/libavutil/float_dsp.c') diff --git a/media/ffvpx/libavutil/float_dsp.c b/media/ffvpx/libavutil/float_dsp.c new file mode 100644 index 000000000..c85daffc6 --- /dev/null +++ b/media/ffvpx/libavutil/float_dsp.c @@ -0,0 +1,146 @@ +/* + * Copyright 2005 Balatoni Denes + * Copyright 2006 Loren Merritt + * + * 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 "attributes.h" +#include "float_dsp.h" +#include "mem.h" + +static void vector_fmul_c(float *dst, const float *src0, const float *src1, + int len) +{ + int i; + for (i = 0; i < len; i++) + dst[i] = src0[i] * src1[i]; +} + +static void vector_fmac_scalar_c(float *dst, const float *src, float mul, + int len) +{ + int i; + for (i = 0; i < len; i++) + dst[i] += src[i] * mul; +} + +static void vector_fmul_scalar_c(float *dst, const float *src, float mul, + int len) +{ + int i; + for (i = 0; i < len; i++) + dst[i] = src[i] * mul; +} + +static void vector_dmul_scalar_c(double *dst, const double *src, double mul, + int len) +{ + int i; + for (i = 0; i < len; i++) + dst[i] = src[i] * mul; +} + +static void vector_fmul_window_c(float *dst, const float *src0, + const float *src1, const float *win, int len) +{ + int i, j; + + dst += len; + win += len; + src0 += len; + + for (i = -len, j = len - 1; i < 0; i++, j--) { + float s0 = src0[i]; + float s1 = src1[j]; + float wi = win[i]; + float wj = win[j]; + dst[i] = s0 * wj - s1 * wi; + dst[j] = s0 * wi + s1 * wj; + } +} + +static void vector_fmul_add_c(float *dst, const float *src0, const float *src1, + const float *src2, int len){ + int i; + + for (i = 0; i < len; i++) + dst[i] = src0[i] * src1[i] + src2[i]; +} + +static void vector_fmul_reverse_c(float *dst, const float *src0, + const float *src1, int len) +{ + int i; + + src1 += len-1; + for (i = 0; i < len; i++) + dst[i] = src0[i] * src1[-i]; +} + +static void butterflies_float_c(float *av_restrict v1, float *av_restrict v2, + int len) +{ + int i; + + for (i = 0; i < len; i++) { + float t = v1[i] - v2[i]; + v1[i] += v2[i]; + v2[i] = t; + } +} + +float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len) +{ + float p = 0.0; + int i; + + for (i = 0; i < len; i++) + p += v1[i] * v2[i]; + + return p; +} + +av_cold AVFloatDSPContext *avpriv_float_dsp_alloc(int bit_exact) +{ + AVFloatDSPContext *fdsp = av_mallocz(sizeof(AVFloatDSPContext)); + if (!fdsp) + return NULL; + + fdsp->vector_fmul = vector_fmul_c; + fdsp->vector_fmac_scalar = vector_fmac_scalar_c; + fdsp->vector_fmul_scalar = vector_fmul_scalar_c; + fdsp->vector_dmul_scalar = vector_dmul_scalar_c; + fdsp->vector_fmul_window = vector_fmul_window_c; + fdsp->vector_fmul_add = vector_fmul_add_c; + fdsp->vector_fmul_reverse = vector_fmul_reverse_c; + fdsp->butterflies_float = butterflies_float_c; + fdsp->scalarproduct_float = avpriv_scalarproduct_float_c; + + if (ARCH_AARCH64) + ff_float_dsp_init_aarch64(fdsp); + if (ARCH_ARM) + ff_float_dsp_init_arm(fdsp); + if (ARCH_PPC) + ff_float_dsp_init_ppc(fdsp, bit_exact); + if (ARCH_X86) + ff_float_dsp_init_x86(fdsp); + if (ARCH_MIPS) + ff_float_dsp_init_mips(fdsp); + return fdsp; +} -- cgit v1.2.3