| 0,0 → 1,139 |
|---|
| /* |
| * 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" |
| |
| 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 void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact) |
| { |
| 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_ARM |
| ff_float_dsp_init_arm(fdsp); |
| #elif ARCH_PPC |
| ff_float_dsp_init_ppc(fdsp, bit_exact); |
| #elif ARCH_X86 |
| ff_float_dsp_init_x86(fdsp); |
| #elif ARCH_MIPS |
| ff_float_dsp_init_mips(fdsp); |
| #endif |
| } |