libavcodec/fmtconvert.c
fe2ff6d2
 /*
  * Format Conversion Utils
  * Copyright (c) 2000, 2001 Fabrice Bellard
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
  * 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 "avcodec.h"
 #include "fmtconvert.h"
1d9c2dc8
 #include "libavutil/common.h"
fe2ff6d2
 
b6293e27
 static void int32_to_float_fmul_scalar_c(float *dst, const int32_t *src,
                                          float mul, int len)
 {
fe2ff6d2
     int i;
     for(i=0; i<len; i++)
         dst[i] = src[i] * mul;
 }
 
aebf0707
 static void int32_to_float_c(float *dst, const int32_t *src, intptr_t len)
 {
     int i;
 
     for (i = 0; i < len; i++)
         dst[i] = (float)src[i];
 }
 
31c6f6f6
 static void int32_to_float_fmul_array8_c(FmtConvertContext *c, float *dst,
                                          const int32_t *src, const float *mul,
                                          int len)
 {
     int i;
     for (i = 0; i < len; i += 8)
         c->int32_to_float_fmul_scalar(&dst[i], &src[i], *mul++, 8);
 }
 
fe2ff6d2
 av_cold void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx)
 {
aebf0707
     c->int32_to_float             = int32_to_float_c;
fe2ff6d2
     c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_c;
31c6f6f6
     c->int32_to_float_fmul_array8 = int32_to_float_fmul_array8_c;
fe2ff6d2
 
a0fc780a
     if (ARCH_AARCH64)
         ff_fmt_convert_init_aarch64(c, avctx);
     if (ARCH_ARM)
         ff_fmt_convert_init_arm(c, avctx);
     if (ARCH_PPC)
         ff_fmt_convert_init_ppc(c, avctx);
     if (ARCH_X86)
         ff_fmt_convert_init_x86(c, avctx);
e97e2588
     if (HAVE_MIPSFPU)
         ff_fmt_convert_init_mips(c);
fe2ff6d2
 }