FFmpeg: libavutil/float_dsp.c Source File

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libavutil

float_dsp.c

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1 /*

4 *

5 * This file is part of FFmpeg.

6 *

7 * FFmpeg is free software; you can redistribute it and/or

8 * modify it under the terms of the GNU Lesser General Public

9 * License as published by the Free Software Foundation; either

10 * version 2.1 of the License, or (at your option) any later version.

11 *

12 * FFmpeg is distributed in the hope that it will be useful,

13 * but WITHOUT ANY WARRANTY; without even the implied warranty of

14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

15 * Lesser General Public License for more details.

16 *

17 * You should have received a copy of the GNU Lesser General Public

18 * License along with FFmpeg; if not, write to the Free Software

19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

20 */

22 #include "config.h"

24 #include "float_dsp.h"

26 static void vector_fmul_c(float *dst, const float *src0, const float *src1,

27 int len)

28 {

29 int i;

30 for (i = 0; i < len; i++)

31 dst[i] = src0[i] * src1[i];

32 }

34 static void vector_fmac_scalar_c(float *dst, const float *src, float mul,

35 int len)

36 {

37 int i;

38 for (i = 0; i < len; i++)

39 dst[i] += src[i] * mul;

40 }

42 static void vector_fmul_scalar_c(float *dst, const float *src, float mul,

43 int len)

44 {

45 int i;

46 for (i = 0; i < len; i++)

47 dst[i] = src[i] * mul;

48 }

50 static void vector_dmul_scalar_c(double *dst, const double *src, double mul,

51 int len)

52 {

53 int i;

54 for (i = 0; i < len; i++)

55 dst[i] = src[i] * mul;

56 }

58 void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)

59 {

60 fdsp->vector_fmul = vector_fmul_c;

61 fdsp->vector_fmac_scalar = vector_fmac_scalar_c;

62 fdsp->vector_fmul_scalar = vector_fmul_scalar_c;

63 fdsp->vector_dmul_scalar = vector_dmul_scalar_c;

65 #if ARCH_ARM

66 ff_float_dsp_init_arm(fdsp);

67 #elif ARCH_PPC

68 ff_float_dsp_init_ppc(fdsp, bit_exact);

69 #elif ARCH_X86

70 ff_float_dsp_init_x86(fdsp);

71 #elif ARCH_MIPS

72 ff_float_dsp_init_mips(fdsp);

73 #endif

74 }

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