FFmpeg: libavutil/float_dsp.c Source File

00001 /*
00002  * Copyright 2005 Balatoni Denes
00003  * Copyright 2006 Loren Merritt
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #include "config.h"
00023 
00024 #include "float_dsp.h"
00025 
00026 static void vector_fmul_c(float *dst, const float *src0, const float *src1,
00027                           int len)
00028 {
00029     int i;
00030     for (i = 0; i < len; i++)
00031         dst[i] = src0[i] * src1[i];
00032 }
00033 
00034 static void vector_fmac_scalar_c(float *dst, const float *src, float mul,
00035                                  int len)
00036 {
00037     int i;
00038     for (i = 0; i < len; i++)
00039         dst[i] += src[i] * mul;
00040 }
00041 
00042 void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
00043 {
00044     fdsp->vector_fmul = vector_fmul_c;
00045     fdsp->vector_fmac_scalar = vector_fmac_scalar_c;
00046 
00047 #if ARCH_ARM
00048     ff_float_dsp_init_arm(fdsp);
00049 #elif ARCH_PPC
00050     ff_float_dsp_init_ppc(fdsp, bit_exact);
00051 #elif ARCH_X86
00052     ff_float_dsp_init_x86(fdsp);
00053 #endif
00054 }