Subversion Repositories Kolibri OS

Rev

Blame | Last modification | View Log | RSS feed

  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 "avcodec.h"
  24. #include "fmtconvert.h"
  25. #include "libavutil/common.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, AVCodecContext *avctx)
  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_ARM) ff_fmt_convert_init_arm(c, avctx);
  50.     if (ARCH_PPC) ff_fmt_convert_init_ppc(c, avctx);
  51.     if (ARCH_X86) ff_fmt_convert_init_x86(c, avctx);
  52.     if (HAVE_MIPSFPU) ff_fmt_convert_init_mips(c);
  53. }
  54.