libavcodec/fmtconvert.c

   1 /*
   2  * Format Conversion Utils
   3  * Copyright (c) 2000, 2001 Fabrice Bellard
   4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * FFmpeg is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with FFmpeg; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 #include "config.h"
  24 #include "libavutil/attributes.h"
  25 #include "fmtconvert.h"
  26
  27 static void int32_to_float_fmul_scalar_c(float *dst, const int32_t *src,
  28                                          float mul, int len)
  29 {
  30     int i;
  31     for(i=0; i<len; i++)
  32         dst[i] = src[i] * mul;
  33 }
  34
  35 static void int32_to_float_fmul_array8_c(FmtConvertContext *c, float *dst,
  36                                          const int32_t *src, const float *mul,
  37                                          int len)
  38 {
  39     int i;
  40     for (i = 0; i < len; i += 8)
  41         c->int32_to_float_fmul_scalar(&dst[i], &src[i], *mul++, 8);
  42 }
  43
  44 av_cold void ff_fmt_convert_init(FmtConvertContext *c)
  45 {
  46     c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_c;
  47     c->int32_to_float_fmul_array8 = int32_to_float_fmul_array8_c;
  48
  49 #if ARCH_AARCH64
  50     ff_fmt_convert_init_aarch64(c);
  51 #elif ARCH_ARM
  52     ff_fmt_convert_init_arm(c);
  53 #elif ARCH_PPC
  54     ff_fmt_convert_init_ppc(c);
  55 #elif ARCH_RISCV
  56     ff_fmt_convert_init_riscv(c);
  57 #elif ARCH_X86
  58     ff_fmt_convert_init_x86(c);
  59 #endif
  60 #if HAVE_MIPSFPU
  61     ff_fmt_convert_init_mips(c);
  62 #endif
  63 }